As a molding equipment, the ball press machine is very important in all industries, whether it is reprocessing of materials, or for convenient transportation, or direct molding, it plays a very important role. If you buy a ball press for the first time, we don’t know how to choose a variety of models, and we don’t know which one we need. The ball press manufacturer summarizes the classification of the ball press and learns together. Let’s have a look.

First, classification by pressure

In the manufacturing industry, the classification of ball presses is mainly related to pressure. In today’s market, ball presses can be basically divided into low pressure, medium pressure, high pressure, etc. In addition, our company has also developed and produced ultra high pressure. Ball machine for materials that require more pressure for forming.

1, experimental pressure ball machine

Smaller volume and lower energy consumption, different press roller pressure ratios can be adjusted according to different materials, ranging from 0-15t/cm. It is specially designed by our company for universities, laboratories, design units and factories and mines. The small experimental equipment manufactured is 1920*2100*1640 (unit mm) and is mainly used for small-scale simulation production.

2, medium pressure ball machine

Mainly relying on the material weight to enter the rolling zone to suppress the material with higher bulk density. According to different models, the line pressure ratio is between 2.5-3.0 (t/cm). The medium pressure ball press will change the structure of the traditional external gear transmission. In order to adopt the structure of the double-shaft reducer, the precision of the roller is effectively improved, and the gear of the reducer adopts a hard-toothed gear, which greatly improves the performance and service life of the reducer.

3, high pressure ball machine

Mainly used for pressing materials that are difficult to form. Compared with medium pressure, the line pressure ratio varies from 5-11 (t/cm) according to the model. The pre-press machine adopts speed-regulating motor, and all wear parts are welded. Wear-resistant alloy for improved performance and longevity, hydraulic standing, adjustable pressure and overpressure protection. Among today’s molding equipment, high pressure ball presses are widely used. Many of the types of ball presses mentioned below are actually one type of high pressure ball presses.

4, ultra high pressure ball machine

Designed for the production of finer particles (above 300 mesh) and lighter weight, the pressure of higher pressure is larger, the line pressure ratio is between 20-25t/cm, and the pre-presser is used to scrape the nozzle. The arc baffle is made of wear-resistant composite material, and the roller sleeve is composed of multiple contact seals, which greatly increases the sealing property of the triangular compression zone and effectively protects the roller sleeve from damage.

Second, pressing material classification

For the user, the pressure of the ball press is only a parameter, and the material to be pressed is the key factor for the classification of the ball press. The parameters required for different material forming are not the same, thus the various materials are separated. Various ball presses, such as dry powder, briquette, mineral powder, bauxite, etc.

1, dry powder ball machine

It is mainly used to suppress some moisture-free materials, such as quicklime powder, alumina powder, etc., water should not be added during the molding process, and the air between the materials is discharged and extruded into balls by high pressure, which is used in some metallurgical and chemical industries. .

2, mine powder ball machine

It is mainly used for the forming of some metallurgical wastes, as well as materials for re-returning the medicines, such as chrome ore powder, manganese ore powder and dust ash. For material sizes between 0 and 3 mm, the pressure requirements are within the scope of high pressure ball machines.

3, briquette pressure ball machine

It is suitable for pressing some materials which contain a certain amount of water, or need to add a certain amount of water or binder, and can also be subjected to anhydrous press forming. The molding process of the briquette ball press is divided into cold pressing and hot pressing, mainly in cold pressing forming, and the cold pressing determines whether to add the binder according to the bonding force between the materials. The briquette press is a medium and high pressure forming equipment. The configuration of different materials is slightly different, and customized production is required.

The above three ball presses have obvious requirements for the production process, while other ball presses require only a slight difference, but in general, there is no water, water and the binder to be added. Wait, some materials require the same material to be different in the molding process.

Third, the pressure roller diameter classification

1, small pressure ball machine

The diameter of the pressure roller is within 800mm. There are three models of the roller diameter of the small pressure ball machine produced by our company:

(1) Roller diameter 520mm ball press, under the roller diameter, the total pressure of the ball press is 100t, 150t.

(2) Roller diameter 650mm ball press, under the roller diameter, the total pressure of the ball press is 120t, 220t.

(3) Roller diameter 750mm ball press, under the roller diameter, the total pressure of the ball press is 150t, 200t, 300t.

Suitable for small and medium-sized enterprises in the processing of various materials, especially the powdery materials are not particularly small and medium-sized enterprises, the small overall size is small, the space requirements for the plant are not particularly harsh, the weight is light, if necessary, can be Move the adjustment device position during shutdown. However, the small ball press has a small roll surface, so the output is not particularly large. If it is a slightly larger medium-sized enterprise that has a large demand for production, it is more suitable for a medium-sized ball press.

2, medium pressure ball machine

The pressure roller is between 800mm and 1200mm in diameter:

(1) Ball diameter 800mm ball press, the total pressure of the ball press is 380t.

(2) Roller ball with a diameter of 1000mm, the total pressure of the ball press is 300t, 350t, 500t, 540t, 800t.

(3) Roller ball with a diameter of 1200mm, the total pressure of the ball press is 300t, 800t and 1000t.

Compared with small-scale production and wider application range, both medium-sized enterprises and large enterprises can meet the production and molding pressure, and the roll surface is large enough and wide, and the output is high, but for the site. It requires a lot of space, and it may be necessary to install supporting facilities to help feed and dry.

3, large pressure ball machine

The pressure roller has a diameter of 1200mm or more. The Central Plains produces a ball press with a diameter of 1400mm. The total pressure is divided into 360t and 1000t. The body is larger and the output is higher. At the same time, it can meet some special molding needs, and is suitable for some large coal, mining and metallurgical industries.

The above is the classification of several common pressure ball machines. It can be seen that there are many types of such molding equipment, and there may be more than these. At the same time, for different pressure ball machine manufacturers, the classification of the pressure ball machines is not the same. However, when choosing, it is always inseparable from the size, output and use of the ball press.

The structure of the high-pressure roller mill is relatively complicated, the load is large, and there are many systems and components. In order to make better use of the device, it is necessary to understand its various components and nightly and necessary. The high-pressure roller mill is composed of a shafting system, a main frame, a feeding device, a transmission system, a hydraulic system, a lubrication system, a roller cover, and a detection system.

First, the spindle shaft system

The component consists of a grinding roller spindle with a certain thickness of wear-resistant material, a double row spherical roller bearing, a bearing seat, and inner and outer bearing end caps, a positioning ring, an end face thermal resistance, a water cooling system and the like.

The main shaft adopts split type and consists of two parts: the shaft body and the sleeve. The surface of the sleeve is welded with a wear layer. After the wear layer is worn, it can be repaired directly on the surface. If the sleeve is used, it cannot be repaired. To the extent that a new bushing can be replaced. The bearing support of the main shaft of the main shaft is a conical section, so that the disassembly of the main bearing can be carried out by means of an ultra-high pressure oil pump, which is convenient for inspection and replacement.

The main bearing of the high-pressure roller mill uses double row spherical roller bearings with self-aligning function. The bearing has the characteristics of large carrying capacity and long service life. It is concentrated with dry oil to ensure good lubrication.

The end face thermal resistance is used to detect the working temperature of the main bearing. It is closely attached to the outer ring of the main bearing to ensure continuous detection, alarm and control of the main bearing temperature. The water cooling system is used to reduce the operating temperature of the main shaft and the bearing, so that the shaft system can operate stably and continuously.

Second, the main frame

The main frame is the basis of the entire extrusion pulverization, and the crushing force is absorbed by it. In order to reduce the weight, all the welded structures are composed of upper and lower beams, left and right columns, bearing pins, positioning pins, guide rails and connecting bolts. See the main frame assembly schematic. The upper and lower beams and the left and right columns are integrally annealed after welding to eliminate the welding stress.

The upper and lower beams adopt the I-shaped structure and have greater rigidity and strength. The left and right columns and the structure of the I-shaped and box-shaped structures also have high rigidity, so that the entire frame can be connected into one. Rigid whole.

The load bearing pin mainly functions until the pulverizing force received on the column is transmitted to the upper and lower beams. Pay attention to the marking when installing.

The main role of the locating pin is to determine the center distance of the upper and lower beams on both sides.

The guide rails are provided as guides for the movable roller chocks. The rail widths on both sides are different, and the guide rails on the drive side should be wider.

Bolt sets are the key to ensuring the connection of the rack. Therefore, the high-strength bolts cannot be replaced by ordinary bolts, and the tightening torque should be controlled when tightening.

Third, the feeding device

The high-pressure roller mill feeding device is an important device to ensure that the material can enter the pressure zone uniformly and quantitatively, and the material is well squeezed. In operation, the material always fills the entire feed device and is directed into the pressure zone of the grinding roller. The feeding device is composed of a feeding port, a regulating inserting plate, a bracket, and a side plate pressing device. At the lower end of the side baffle, a hard alloy material of high hardness is provided in the portion of the pressure zone where the wear is severely punished. This reduces wear and improves the quality of the extruded material. The adjustment insert is used to control the thickness of the material cake to achieve the control of the treatment amount. It consists of a hand wheel, an adjusting screw and a card with welded material.

The side plate pressing device is used for controlling the gap between the side baffle and the end surface of the grinding roller. The device is composed of a bracket, a top screw, a butterfly spring and a spring seat.

The over-tightening screw can adjust the gap between the lower end of the side baffle and the end face of the grinding roller. Adjusting the pressure plate can adjust the top tension of the butterfly spring, so that the side baffle can ensure proper clearance with the end surface of the grinding roller during normal operation, and reduce the leakage of the end surface of the grinding roller.

Fourth, the main motor and transmission system

The main motor is the main power source for the entire high pressure roller mill. Two high-voltage three-phase asynchronous motors are used, which can be purchased by the user or commissioned by the manufacturer.

The transmission system adopts the internationally advanced planetary reducer suspension transmission. The output shaft of the planetary reducer is rigidly fixed to the grinding roller spindle by a shrink sleeve coupling. The gear unit is mounted on the basis of the grinding roller spindle and the gear unit can withstand the horizontal movement of the spindle. The output torque of the reducer is balanced by the torque support. The torque support includes a four-bar linkage and an elastic system. The torque support can satisfy the horizontal movement of the movable roller, and at the same time, it can play the role of load sharing, vibration absorption and buffering, and can reduce the processing and installation precision. All the hinge points in the four-bar linkage adopt the joint bearing with the sealing ring, which is highly adaptable. The elastic member in the elastic system employs a butterfly spring having a small axial dimension and a large coefficient of rigidity. In the working of the equipment, the top tension of the spring can be adjusted by adjusting the device to adapt the elastic system to the condition of the equipment load, and the universal joint drive shaft is used between the main motor and the planetary reducer. Since the universal joint drive shaft is disposed at the high speed end, the torque required to transmit itself is relatively small, and the rotational speed is high. And the cross-shaft universal joint drive shaft has the characteristics of high transmission efficiency, large transmission torque, balanced transmission, good lubrication conditions and large node inclination.

The shrink sleeve coupling used in the transmission system is a non-standard accessory, which consists of a conical sleeve, two shrink discs, a high-strength bolt set and a dust seal. The working principle is: tightening the high-strength bolt, so that the conical sleeve presses the hollow shaft of the reducer, and elastically deforms it, and is hung on the journal shaft of the grinding roller, and uses the friction generated by the positive pressure therebetween. It functions to transmit torque and reducer positioning.

Five, hydraulic system

The hydraulic system is designed to provide the required crushing force for the grinding rolls. Its main function is the hydraulic springs, which also have hydraulic protection. Its performance directly affects the quality of the crushed material and the safety of the equipment.

The system consists of three parts: pump station, valve table and cylinder (see hydraulic system diagram). The valve table, pump station and cylinder are mounted directly on the frame and are compact.

The pump station provides a hydraulic oil pump, which is mainly composed of an oil pump, an oil pump motor relief valve, a pressure gauge and an oil filter.

The oil filter of the pumping station is arranged in series with the pressurized main oil circuit, so that the hydraulic oil is filtered by the oil filter and then enters the main oil circuit to avoid blockage of system components caused by impurities entering the main oil circuit, and the system pressure can be based on The operation requires stepless adjustment. The pressure required to control the system can be adjusted steplessly. A pressure differential device is attached to the oil filter. When the filter cartridge is clogged and the pressure difference between the two sides reaches a certain value, an alarm signal is issued to clean or replace the filter cartridge by the operator. The valve table section is the main oil circuit and control oil circuit of the hydraulic system, and is composed of two capacity accumulators and an electromagnetic overflow valve. During operation, the four main cylinders are connected to the two accumulators through large diameter pipes so that the pressure between them is always the same and the dynamic characteristics of the cylinders are sensitive. The pilot-operated relief valve mainly protects the hydraulic system. It has the characteristics of dynamic response and large flow. Once the roller enters the foreign object and the system pressure increases, it can open the pressure relief in time to protect the host equipment. The relief valve can be hydraulically controlled and electronically controlled.

When commissioning and handling accidents, you can press the push button to relieve pressure or high speed pressure. A pressure sensor and an electric contact pressure gauge are additionally provided on the valve table. The hydraulic system pressure signal main control room and control cabinet can be interlocked with the main unit through the pressure sensor, which is also convenient for the operator to observe the operation. The electric contact pressure gauge is mainly used to control the upper and lower limits of the hydraulic system pressure. Control the opening and closing of the pump pump motor.

The four cylinders act directly on the movable roller bearing housing to provide the appropriate crushing force for the grinding roller. The cylinder force can be applied to the single-side bearing seat or the double-side bearing seat by the displacement of the oil circuit control system. When the grinding roller is moved, the horizontal displacement of the two bearing seats is detected and controlled by the displacement sensor. The cylinder consists of a cylinder, a piston, an end cap, a wear ring and a sealing ring. See the schematic diagram of the cylinder assembly. The cylinder is a double-acting cylinder, so that once the black system of the equipment fails. The movable roller can be pulled back in time with the cylinder to increase the nip and eliminate the malfunction. At the end face of the cylinder rod of the cylinder, a toroidal head is provided to prevent the radial load from being added to the cylinder when the axis of the moving roller is deflected.

Sixth, lubrication system

The lubrication system is used for the lubrication of the main bearing, the sealing and the lubrication of the movable roller bearing housing. The lubrication system can adapt to the dusty working environment and ensure the lubrication of the main bearing and the movable roller bearing housing under good lubrication conditions. It is mainly composed of a oil storage cylinder, a pump component with a flange connected, and a geared motor. Grease can be manually or electrically filled with a pump and added to the oil cylinder through a hose to prevent the grease from being exposed to dust and contaminating the grease. A pressure limiting valve and a fuse are provided in the lubrication pump to adjust the maximum pressure of the lubrication system. When the pressure in the system is exceeded for some reason, the rupture plate breaks and the grease overflows. A filter screen is provided on the lubrication pump to filter grease to prevent debris from entering the system and to ensure normal operation of the system. The grease from the lubrication pump is proportionally distributed to each lubrication point by the progressive distributor. There are two oil separators in the system, one on each side of the main frame.

This type of oil separator is a relatively advanced oil separator. It is characterized in that any one of the divided roads is blocked, and the whole system stops working. This avoids the Achilles heel that one or more lubrication points are broken and the operator cannot detect in time. A proximity switch is placed on the oil separator to signal the operator as soon as the oil separator stops working.

Seven, detection system

The detection system is distributed among the various systems as the detection control signals. The signals detected by the detection elements enable interlocking, indication and alarm between the systems. Realize automatic control of the device.

1. The nip detection between the two grinding rolls adopts two inductive displacement sensors, which are respectively arranged on the two bearing seats of the movable roller. Through the sensor, the nip of the two grinding rolls can be reflected at any time, that is, the material cake is reflected. thickness. When the two bearing seats move unevenly, the deviation can also be reflected. When one of the two bearing housings or the two-shaft bearing housing retreats to the set maximum displacement, an alarm is issued, and the main motor is locked in parallel to ensure the safety of the equipment.

2, the main bearing temperature detection end face platinum thermal resistance. Each bearing is tested separately. The end face thermal resistance is attached to the outer ring of the bearing to detect and reflect the working test of the main bearing at any time. When the operating temperature reaches the set maximum value, an alarm is issued to notify the operator.

3. Pressure sensor is used for pressure detection of hydraulic system. The sensor detects the signal and transmits it to the host control cabinet. When the system pressure exceeds the set maximum system pressure, an alarm is issued and the main drive motor is stopped.

4. Lubrication system work detection uses proximity switch. The proximity switch is installed on the system oil separator. When the oil separator is working normally, the proximity switch is instructed once every other time. When a certain oil circuit is blocked, the proximity switch does not operate at all times. However, it must be noted that the premise of the oil separator or the proximity switch must be based on the normal operation of the lubricating oil pump motor and the unbroken grease in the oil reservoir.

5, the pressure difference alarm of the oil filter, using the differential pressure device. When the oil filter is used for a period of time, the impurities under filtration may block the filter cartridge, causing the pressure difference between the oil passages on both sides of the oil filter to increase. When it is increased to a certain value, the sound and light alarm signal is emitted from the main control cabinet. It is worth noting that the signal is only sent when the oil filter is working.

Eight, roller cover

The main function of the roller cover: one is to prevent accidental casualties and equipment damage accidents; the other is to seal and reduce dust. Observation and repair door holes are provided on both roller covers to check the wear of the roller surface at any time while the equipment is running.

The impact crusher, also known as counter-breaking, is a kind of crushing machine that uses impact energy to crush materials. It can process materials with a side length of 100-500 mm and a compressive strength of up to 350 MPa. It has the advantages of large crushing ratio and cubic particles after crushing. Widely used in building materials, ore crushing, railways, highways, energy, transportation, energy, cement, mining, chemical and other industries for medium and fine crushed materials, its discharge size can be adjusted, and the crushing specifications are diversified.

Any machine that is used for a long time or when it is used improperly will cause abnormal use. What are the common faults and solutions when using the impact crusher?

Common faults and solutions for impact crushers:

1. Counter-breaking start device does not turn

Check if the material in front of the feeder falls into the crushing chamber due to the vibration of the stop, causing the material to catch the rotor. It is necessary to clean the materials in the crushing chamber and restart it after starting up again.

2. Counterattack broken bearing fever

The bearing should be inspected for good lubrication. Under normal conditions, the lubricant should be filled with 50% of the housing volume. In other cases, the lubricant is degraded and viscous. The bearing needs to be cleaned and replaced with a new one. If the bearing oil is too much or too little, the bearing will heat up. When refueling, it is necessary to check the oil level. If the bearing is damaged, the bearing should be replaced in time. The upper cover is too tight. It is advisable to adjust the bolt tightness.

3. Equipment vibration is abnormal

If there is a vibration abnormality, the operator should stop immediately, we need to check the following.

(1) Check whether the inside contains metal impurities or parts are broken, and clean the crusher cavity;

(2) Check the tightening of the inner liner and the gap between the hammer and the liner. If the gap is too small, it will cause abnormal noise;

(3) It may be that the feed size is too large;

(4) Wear parts are unevenly worn, and the counter hammer needs to be replaced;

(5) The rotor is unbalanced and needs to be adjusted to verify the balance;

(6) Check that the equipment anchor bolts are tight and properly reinforced.

4. Counterattack broken belt flip

Mainly due to the broken belt, the need to replace the V-belt, pay attention to ensure the quality of the belt; or because of the improper assembly of the pulley, the active and driven pulleys should be adjusted on the same plane.

5. The machine bearing is bent or broken

The main reason is that the main engine is overloaded for a long time, the heat treatment of the bearing is improper, and the hardness of the broken material exceeds the standard. When handling, it is necessary to replace the new bearing, and pay attention to timely maintenance and repair during the future operation.

6. The discharge granularity is too large

Explain that the counter-shock crusher hammer or counter-attack lining is seriously worn, causing the gap between the hammer and the counter-attack plate to be too large, adjusting the back-and-forth impact frame clearance, or replacing the lining plate and the plate hammer; adjusting the position of the counter-attack frame so that the sides and the machine The gap between the lining plates is even; if the lining on the frame is seriously worn, it should be replaced in time.

7. The impact crusher appears boring car

The counter-shock is suddenly stopped during operation, which causes many reasons, such as blockage of the discharge port, slippage of the belt, low voltage, and bearing damage. These problems should be eliminated, such as removing the blockage of the discharge port, tightening the belt, increasing the voltage and ensuring the stability of the voltage, and replacing the bearing.

8. The device spring parts break

The main reason for this failure is that the spring is not relaxed when the discharge opening is adjusted. Therefore, the broken spring must be replaced during processing.

9. Abnormal noise inside the broken chamber

Should stop immediately, check whether the inside of the crushing chamber contains metal impurities or parts break, and clean the crusher cavity; check the internal lining fastening and the gap between the hammer and the lining, too small clearance will cause abnormal noise .

10. There is glue smell in the operation of the equipment

The main cause of this problem is that the belt slips, the friction with the pulley produces a pungent rubber smell, or the rotor is stuck. It is necessary to check the rotor in the machine cavity and solve it in time.

The above is the fault and solution that is easy to occur in the use of the impact crusher. If this happens during later use, you can refer to the simple check. When we choose the impact crusher, we must choose the quality clearance, the regular manufacturer. Avoid problems that often occur later, or without quality assurance.

Counter-crusher, also known as counter-attack, is mainly used for metallurgical, chemical, building materials, hydropower and other materials that need to be relocated, especially for the operation of mobile materials such as highways, railways, hydropower projects, etc. The types, sizes and finished material requirements vary in a variety of configurations.

The impact crusher can process materials with a side length of 100-500 mm and a compressive strength of up to 350 MPa. It has a large crushing ratio and a cubic particle after crushing. Widely used in building materials, ore crushing, railways, highways, energy, transportation, energy, cement, mining, chemical and other industries for medium and fine materials. The size of the discharge material can be adjusted, and the crushing specifications are diversified.

The impact crusher is named according to the working principle, that is, the material is crushed by the principle of counter crushing. It is a crusher equipment which is more fine than the jaw crusher. It is mainly used for fine crushing operations in the stone production line. The crusher cooperates to break. The impact crusher has the following five advantages in the process of crushing.

Impact crusher performance

First, the impact crusher is more effective in dealing with materials with large moisture content, effectively preventing material blockage. When the moisture content of the treated material is too large, the feed chute and the counterplate of the impact crusher may be equipped with a heating device to prevent the material from sticking. The impact crusher does not need to be equipped with a bottom sieve plate to prevent clogging.

Second, the impact crusher is suitable for a wider range of materials. The hammer of the impact crusher is fixed to the rotor by a mechanical clamping structure, and has a large moment of inertia when it rotates with the rotor. Compared with the hammer crusher (the hammer is in a suspended state), the rotor of the impact crusher has greater momentum, adapts to crushing harder materials, and has lower energy consumption.

Third, it can be convenient and flexible to adjust the particle size of the discharge, and the adjustment range is wide. The impact crusher can adjust the discharge granularity in various ways, such as adjusting the rotor speed, adjusting the backlash plate and the gap of the grinding cavity. The gap adjustment can be adjusted mechanically or hydraulically, and the hydraulic adjustment system facilitates the adjustment of the gap through the local operation button or the travel control system.

Fourth, the wearing parts of the wearing parts are small, the metal utilization rate is high, and the wear of the counter-attack type stone-breaking machine hammer is only present on the one side facing the material. When the rotor speed is normal, the feed will fall to the surface of the hammer (the striking surface), and the back and sides of the hammer will not be worn. Even the wear on the side of the material is scarce. And the bottom grinding rod is also easy to replace. The metal utilization rate of the impact crusher plate hammer can be as high as 45% – 48%.

5. The spare parts of the impact crusher are easy to replace and the maintenance cost is reduced accordingly. Only 6 hammers are installed on the rotor of the impact crusher. The special tools can be used to easily replace the hammers. The time of a shift.

Why choose a impact crusher

(1) The particle size is uniform, the discharge is cubic, and the fine powder and dust content are low.

(2) Low operating costs and low investment costs. The total weight of the impact crusher is lighter than that of the hammer crusher, the shape is small, and the dynamic and static load values ​​are low, which can effectively reduce the cost of civil works. At the same time, the required motor power is low, which can effectively reduce the power consumption of the device and reduce the operating cost of the device.

(3) The impact crusher has long running time, and the consumable parts are durable and reliable.

First, it can handle materials with high moisture content to prevent clogging.

When the impact crusher is in operation, it can handle materials with a large moisture content, and can prevent the material from being blocked during the dust removal process. When the material with relatively large water content passes through the impact crusher, the feeding tank and the counterattack plate of the counterattack plate can be equipped with a heating device, the main function is to prevent the adhesion of the material and the counterattack plate, and the counterattack is not required to be equipped with the bottom sieve plate. Can effectively block the blockage of materials.

Second, the material is widely adaptable.

The impact crusher has a variety of applications, which can crush hard materials or break soft materials. The hammer of the counter crusher is firmly fixed to the rotor by a mechanical clamping structure, and has a large moment of inertia when the rotor rotates. The counter-attack crusher rotor has more power to accommodate the crushing of harder materials while consuming less energy.

Third, the size of the discharge granularity is varied

The output size of the impact crusher is flexible and adjustable, and the range is relatively wide. The counter crusher can adjust the discharge particle size by adjusting the rotor speed and adjusting the gap between the counter plate and the crushing chamber. The gap adjustment can be mechanical or hydraulic, and the hydraulic adjustment system can easily adjust the gap through the on-site operation button or distance control system.

Fourth, vulnerable parts wear less

The impact crusher of the impact crusher has less wear and tear, and the utilization rate of the metal wearing parts is high. The wear of the counter-offer breaker hammer appears only on one side of the panel material. When the rotor speed is normal, the feed will fall on the surface of the hammer (the striking surface), and the back and sides of the steel hammer will not wear. Even on the side of the material, there is little wear. The bottom grinding rod is easy to replace. The metal utilization rate of the counter-attack crusher plate hammer can reach 45%≤48%. The hammerhead of the hammer crusher is suspended and the wear occurs on the top, front, back and sides. Compared with the hammer, the hammer wear is more serious, and the metal utilization rate is only about 25%. The rotor itself may wear out.

Fifth, the replacement of spare parts is simple and the maintenance cost is low

The replacement of the spare parts of the impact crusher is simple and the maintenance cost is reduced accordingly. Only a few hammers are installed on the rotor of the impact crusher (the equipment of different manufacturers may have different number of hammers). It is convenient to replace the hammer with a special tool, and only one shift is required to replace the set of hammers. The replacement of the bottom grinding chamber grinding rod can only take a few + minutes, which greatly reduces the time and cost of inspection and maintenance.

With the development of mining, cement and other industries, more and more broken grinding equipment has been put into actual production. For large pieces of materials that cannot be directly transported, the crushing and grinding equipment has highlighted an irreplaceable advantage. The roller mill is the leader in the crusher.

First, the working principle of high pressure roller mill

1. High pressure roller mill composition

The structure of the high-pressure roller mill is various. The principle is basically similar to that of the roller crusher. There are two work rolls, but the grinding principle is completely different. The high-pressure roller mill is mainly composed of a feeding device, a pair of sticks, a transmission device (electric motor, a speed reducer), a hydraulic system and the like.

The working part of the high-pressure roller mill is a pair of high-pressure rolls arranged in parallel and facing each other. Each roller is driven by a motor through a planetary gear reducer, wherein the fixed roller is fixed in position and the moving roller can be moved on the horizontal slide. The hydraulic system on the sliding roller shaft provides extremely high working pressure to the work roll surface.

2. Principle of crushing of high pressure roller mill

The working principle of the high-pressure roller mill is laminating and pulverizing. During operation, the material enters between two oppositely rotating squeezing rollers through an adjustable opening size feeder, and the full feeding is performed, and the frictional force on the rolling surface is Under the action of the gravity of the column (or forced feeding device), the material is forcibly squeezed into the pressure zone and compacted. When a certain pressure is reached, it is crushed. As the roll gap becomes smaller, the pressure on the material is increased. The larger the sheet, the denser but crack-filled sheet cake falls. There are a large number of fine particles, fine particles and micro-cracks in the cake, which makes the mechanical strength of the cake low, which indirectly improves the processing capacity and grinding efficiency of the mill.

Second, high pressure roller mill application industry

High-pressure roller mills are not used separately in comminution operations and usually form a grinding system with other grinding equipment. The high-pressure roller mill has been used in the cement industry since its inception, so the grinding system in this field is also relatively mature. It is mainly used as a pre-grinding system, which can be divided into a circulating pre-grinding system, a combined grinding system, a hybrid grinding system, and a semi-finish grinding system.

1. Mixed grinding system for cement industry

The mixed grinding system is mostly used in the production of cement raw materials. The material is first crushed by a high-pressure roller mill and then finely ground into a ball mill. The coarse powder of the ball mill will be returned to the high-pressure roller mill for further pulverization, so that the high-pressure roller mill The task is aggravated.

2. High pressure roller mill for metal mining industry

With the modification and performance improvement of high-pressure roller mill equipment, the equipment has been used in the field of metal mines. In the iron ore dressing plant as fine or fine crushing equipment for raw ore, or as fine grinding equipment in front of iron concentrate pellets; as fine or superfine crushing equipment in non-ferrous metal mines, gold mines and other concentrators.

3. Other industries

In addition to its application in the cement industry, high-pressure roller mills are now used in diamonds, copper, platinum, molybdenum, gold and industrial minerals as technology develops and improves.

In addition, the high-pressure roller mill is also an ultra-fine grinding equipment with high efficiency and low consumption, which can be widely used for ultra-fine grinding of non-metallic minerals. For example, non-metallic minerals such as limestone, dolomite, natural magnesite, zircon and corundum are also commonly used in high-pressure roller mills for crushing and milling.

The compound crusher is a new type of high-efficiency fine crushing equipment which combines hammer breaking and counterattack breaking. It has large production capacity, high crushing efficiency, large crushing ratio, small abrasion amount, low energy consumption, good sealing performance and stable operation. The advantages of convenient maintenance, etc., when the building materials enterprise uses the equipment to crush materials such as limestone, coal, coal gangue and cement clinker, it can significantly reduce the grinding grain size and increase the mill output, which is an ideal energy-saving crushing equipment. Want to know more about the composite crusher? Then let’s take a look at the basic introduction, working principle, application range, characteristics, maintenance, troubleshooting, maintenance and safe operation procedures of the composite crusher.

First, the basic introduction

1. The composite crusher is a new generation of high-efficiency crusher which is based on the synthesis of similar crusher technology at home and abroad. It is designed and optimized for the main technical parameters. Its structure is composed of a hammer crusher and a counter crusher. It is especially suitable for crushing medium-hard and low-water content brittle materials in building materials, mining, chemical, metallurgy, cement, coal and other industries. In the cement industry, this equipment is used as secondary crushing;

2. The composite crusher belongs to the road construction machinery and relates to a composite soil crusher. The composite soil crusher comprises a soil crushing bin and a lime crushing bin, and a conveying belt is arranged below the discharge port of the lime crushing bin, and the front end of the conveying belt is located at the feeding port of the soil crushing bin.

3. The composite crusher uses a new type of device to omit the pre-hydration process of dry lime and effectively break the high-water-containing soil, which is conducive to the improvement of construction quality. The composite soil crusher is characterized in that it comprises a soil crushing bin and a lime crushing bin; a discharge port of the lime crushing bin; a conveying belt is arranged below; the front end of the conveying belt is located in the feed of the soil crushing bin. mouth.

Second, the working principle of the composite crusher

1. If the machine is found to be abnormal during normal operation, it should be stopped immediately and inspected. After the fault is removed, the production will continue.

2. The crusher should be turned on at no load to ensure that the crusher is fed after normal operation;

3. Before starting the machine, please pay attention to whether the body door of the machine body is closed, whether the lubricating oil is normal, whether the screw is loose, and the door is opened to make the machine stop.

4. The feed must strictly abide by the instructions for use, too much, too much will cause damage to the crusher.

Third, the scope of application

The composite crusher is widely used in various kinds of hard and brittle materials such as rock, abrasive, refractory, cement clinker, quartz stone, iron ore, concrete aggregate, etc. Sand and road sand are excellent.

Fourth, the characteristics

1. Large crushing ratio, high output, 1.4 times higher than domestic similar products, high efficiency, energy saving, wearing parts with high hardness, high toughness, multi-alloy wear-resistant material, life expectancy increased by 2-3 times, hammer and counterattack The gap between the plates is adjustable to meet a variety of material conditions;

2. The composite crusher is a combination of similar crusher technology at home and abroad, with the advantages of impact breaking and hammer breaking. The new fine crushed and coarsely ground products are optimized and designed for the main technical parameters. They are mainly used for medium and small crushed cement raw materials and clinker. They are used in construction sand, iron ore, sandstone, gypsum, coal gangue and lump coal. And other medium hard ore crushing;

3. It has the characteristics of large crushing ratio, low energy consumption, stable operation, simple structure, convenient operation and maintenance, etc. It is a kind of new multi-purpose, high-efficiency and low-cost new crushing equipment.

Five, compound crusher maintenance

The three-level maintenance system of the composite crusher embodies the shift of the focus of equipment maintenance management in China from repair to maintenance, and the maintenance management policy based on prevention is more clear. The three-stage maintenance system of the composite crusher includes: daily maintenance of the crusher equipment; primary maintenance and secondary maintenance. The three-level maintenance system is a mandatory maintenance system in which the operator is mainly responsible for the protection of the equipment and the warranty is important. The three-level maintenance system relies on all employees, giving full play to the enthusiasm of all members, implementing group management, combining groups, and improving the effective maintenance of equipment.

1, daily maintenance

The daily maintenance of the composite crusher equipment generally has daily maintenance and weekly maintenance, also known as daily maintenance and weekly maintenance;

2, first-level maintenance

The first-level maintenance of the composite crusher is based on the operator, the maintenance worker assists, partially disassembles and inspects the equipment according to the plan, cleans the specified parts, clears the oil circuit, pipeline, replaces or cleans the oil line, felt and oil filter. Adjust the matching clearance of each part of the equipment and fasten the various parts of the equipment. The time for the first-level maintenance is 2-4h. After the completion of the first-guarantee, the record should be recorded and the defects that have not been cleared should be recorded. The mechanical and electrical equipment department should check and accept the operation. Fill in the maintenance record in detail, and submit the acceptance form to the equipment department for filing;

3, secondary maintenance

The secondary maintenance of the composite crusher equipment is mainly based on maintenance workers, the operation workers participate in the completion, the secondary maintenance is included in the equipment maintenance plan, the equipment is partially disassembled and repaired, the worn parts are replaced or repaired, and the oil is cleaned and changed. Check and repair the electrical parts so that the technical condition of the equipment fully meets the requirements of the required equipment integrity standards. The time for secondary maintenance is about 1-3 days. After the secondary maintenance is completed, the maintenance workers should fill in the maintenance records in detail, and the mechanical and electrical equipment department Acceptance with the operator, the acceptance form is handed over to the Equipment Section for filing.

Sixth, troubleshooting

1, the phenomenon of failure: fine-grained

reason: more hammers;

Solution: Reduce one or two layers of hammers;

2, failure phenomenon: coarse grain size

Reason: loose belt or low speed;

Solution: tighten the belt and check if the voltage is 380V;

3, failure phenomenon: broken body swing

Reason: The centrifugal force of the rotor is not balanced;

Solution: Replace the new hammer or adjust the weight of the pusher.

Seven, composite crusher repair

1. The vertical composite crusher has a large crushing ratio, and the maximum crushing ratio can reach the discharge granularity and can be adjusted arbitrarily, which is not affected by the wear of the hammer and the lining;

2. No sieve bar setting, it is not easy to block when crushing materials with high moisture content and large mud content;

3. The use of elastic adjustment mechanism, into the non-breakable material can be automatically discharged, will not cause equipment damage;

4. The bearing horizontal arrangement, long life, can break high temperature materials (such as cement clinker), the rotor structure of the machine is unique, when the material is broken, the rotor body is hardly worn;

5. The rear cavity is provided with a screw rod or a hydraulic opening mechanism, and the wearing parts can be easily replaced without using the main equipment.

Eighth, safe operating procedures

1. Before starting the machine, check whether the door of the composite crusher is closed. Open the door to stop the machine to prevent danger.

2. The crusher must be started at no load, and it can be discharged after the normal operation;

3. The particle size of the material to be fed shall be in accordance with the requirements, and the equipment shall be damaged due to excessive assembly;

4. If abnormal phenomena are found during the crushing process, stop the inspection and eliminate the fault before production.

5. Regularly add lubricating oil to the rotating bearing parts.

As the main equipment for mining, the crusher equipment is mainly used for crushing stones of different sizes. Mainly used in cement, electric power, mining, metallurgy, building materials, highways, railways, water conservancy and other industries, processing marble, limestone, slag, building materials waste, coal gangue and other materials, the application field is very extensive, and the demand is large, purchased A good crusher not only improves the rate, saves energy, but also reduces the cost of use.

When purchasing a crusher, it should be considered from many aspects, considering the characteristics of the material itself, such as the type and hardness of the material, the water content, the degree of splitting, the size of the material entering and exiting, the construction site and the output.

Crusher buying tips

1. Material type and hardness

Material type and hardness are important principles in selecting a crusher. The hardness of different materials is different, and the hardness of the material is usually expressed by Mohs hardness. The molar hardness is divided into 10 grades. The greater the molar hardness, the harder it is to break the ore and vice versa.

2. Water content of the material

The moisture content of the material will also affect the choice of crusher. When the moisture content is too large, the fine material will agglomerate or stick to the coarse particulate material due to the increase of humidity, thereby increasing the viscosity of the material, reducing the drainage speed of the ore, and reducing the production efficiency. If the situation is serious, it may even cause the drain to be blocked, which will affect normal production.

3. Structural density of materials

The degree of structural density of the material also directly affects the productivity of the crusher – when the ore breaks, it is easy to break along the cleavage plane. Therefore, the productivity of the broken ore that solves the haircut is much higher than that of the dense structure of the broken structure.

4. Particle size of feed and discharge

The particle size of the feed and discharge is used to determine the type of comminution equipment and the degree of comminution. If the content of coarse particles (large dry discharge port size) in the crushed material is high, or the maximum feed block and feed width are relatively large, the crushing ratio that the crusher needs to achieve (the particle size of the material before crushing and the material after crushing) The ratio of the particle diameters is large. Therefore, the production efficiency is lowered. If the fine particle content of the crushed material (close to or smaller than the size of the discharge port) is larger, or the ratio of the maximum feed block to the feed width is smaller, the crushing to be achieved is relatively small, and should be correspondingly Improve the productivity of crushed materials.

5. Broken work site

The construction site area is also one of the factors that people should consider when choosing a crusher. In addition, the location of the crushing equipment also affects the choice of crusher.

6. Production capacity

Production capacity is also an important indicator for determining the selection of crushing equipment. The traditional understanding is that the higher the production requirements, the larger the specifications of the required crushing equipment, and the corresponding inputs and outputs will increase.

Crusher purchase considerations

1, choose the right one

Before we buy the crusher, we must first determine what materials we want to work on. We should determine which type of crusher should be used according to our own needs, and which size of the crusher.

In addition, the specific gravity of the ore should be considered. The specific gravity of the ore is directly proportional to the productivity of the crusher. The same crusher will have different productivity when dealing with ore with different specific gravity. There is also the total production volume and distribution requirements of the finished product, according to the choice of crusher type and production capacity; physical properties of the material, such as friability, viscosity, moisture sediment content and larger feed size; technical and economic indicators, do To meet the requirements of quality and quantity, easy to operate, reliable work, and a large amount of cost savings; crushing equipment is a big investment, customers must be cautious when choosing.

2, structural performance

Reasonable structure and excellent performance are prerequisites for the purchase of high-quality equipment. Therefore, the equipment should be carefully checked and compared. If necessary, the equipment can be tested and operated to ensure the safety of the equipment. The purchase is carried out under the guidance of the industry, in order to obtain satisfactory equipment, such equipment is not prone to failure during the work process, and the energy consumption is lower, and the economic benefits created for the user are more considerable. After comparing the structural performance to ensure safety, we should also pay attention to the rate of equipment to enhance economic benefits.

3, equipment work efficiency

The working efficiency of the equipment can be judged from the actual situation of the crushing equipment in operation. When the crushing equipment is broken, the crushing speed is faster. When the machine starts feeding, the crushing operation will start. The material will be broken successfully without too long, and the broken material has uniform particle size; and the quality is not good. Although the crushing equipment can also break the stone smoothly, the crushing speed is very slow, which not only delays the rate of industrial construction, but also the particle size of the material after being crushed is very uneven.

In addition, when the content of coarse particles (large dry discharge port size) in the crushed material is high or the ratio of the larger size of the ore feed to the width of the feed port is large, the crusher needs to achieve a large crushing ratio, so the productivity is lowered; When the content of fine material (close to or smaller than the size of the discharge port) is large or the ratio of the larger size of the ore to the width of the ore is small, the crushing ratio to be achieved is small, so the productivity is increased correspondingly.

For the equipment rate, it is very important to choose the crusher manufacturer of the family business. The professional manufacturer meets to understand the various conditions of the user’s specific site, and for various variables, material properties, potential by-products of the mining area and quarry, The final product nature and other factors that may affect the process performance are evaluated; after fully understanding the user’s production line capacity, final grain size, grain type requirements and user investment cost budget, choose the right, economic, and productivity for the customer. High crushing equipment, pay attention to the quality of the equipment while paying attention to the rate.

4, equipment quality

The crusher is a very complicated process, so we must choose the manufacturer of the industry when selecting the equipment. In addition, the sealability of the joint of the crusher can be tested. The test can be carried out by loading not less than 10 red bricks into the machine for crushing. The standard of the seal should be that the joint does not leak ash; the non-broken material falls into the machine for the safety test. The cast iron parts can be selected for testing; the quality of the rust removal of the welded structural parts can be tested by the sample comparison method or by the stop test method; the discharge size can be determined by the sieve set of the standard mesh holes; the production capacity can be used continuously. The operation is measured by the time-folding algorithm; the test of the withstand voltage performance of the electrical control box edge resistance is to comply with the provisions of GB/T5226.1, etc., to detect the quality of the crusher equipment. When we have tested the quality of the equipment, we must pay attention to whether the after-sales service of this manufacturer is in place. This also determines whether the equipment can be solved in time and not delayed if the equipment encounters problems.

5, after sales service

As we all know, the health service can make users have no worries, especially in the after-sales service. For the user, in order to ensure the company’s future production profit, investment costs, operating costs, design rates, operating standards, maintenance, parts inventory and stacking methods must be considered.

Regular crushing equipment manufacturers should include: providing professional transportation services. If users need technical services, they will send technical service personnel to open the acceptance and guide the installation and commissioning work until the equipment is in normal operation; Train technicians for customers to keep them informed of equipment usage, maintenance and simple repair techniques. In the process of production equipment failure, the manufacturer must come up with a clear solution within 24 hours after receiving the customer’s call, and will quickly solve the problem by first recovering the production and then investigating responsibility. When we determine the quality, performance, rate and after-sales of the equipment, we must pay attention to the price of equipment. The price is the core factor of our concern, and it is also related to the immediate interests of the manufacturers. Therefore, the price/performance ratio of the products is also an important factor in our decision to purchase. .

6, equipment price

Reasonable prices can reduce the cost of the previous period. Only affordable and cheap equipment can be praised and favored. At the same time, the price factors are also multi-faceted. Only after continuous comparison can we buy affordable crusher equipment. The crusher manufacturers have large, medium and small, so the price of the crushing equipment naturally has high, medium and low points. But the low price does not mean that it is really cheap. The comprehensive cost performance of the crushing equipment is what users should pay more attention to. In order to buy a cost-effective crushing equipment, it is recommended that users choose a larger crushing equipment manufacturer, but they must choose the crushing equipment manufacturer of the industry, and better manufacturers can develop high and excellent equipment. When choosing, you should have a general understanding of the manufacturer’s credibility, comprehensive strength, and technical level.

The above are some tips and purchase precautions when purchasing the crusher. When purchasing the crusher, you must also select the quality of the production equipment after the comparison, the reputation is high, the after-sales service is good, so you can purchase the qualified The crusher also relieves the worries of the purchase.

The ball press is a molding device that presses a loose powder into a ball with a rotating press roll with a hemispherical groove. Any metallurgical industry waste, auxiliary materials need to be on the furnace, all need to press the ball machine to complete. For example: dust ash, pool mud, oxide scale, steel slag, iron concentrate, aluminum ash powder, silico-manganese ore powder, and so on. Various powders (such as magnesia, bauxite, dolomite, iron powder, etc.) can be used for metallurgy, chemical industry, etc. by forced pressurization, pre-pressing spiral precision processing, and making ball blanks with higher density. Coal and refractory industries. The ball making block of colored and ferrous metal ore powder is directly smelted into the furnace to increase the added value.

The ball press is mainly used to suppress various powders, powders, scraps and waste residues. It is widely used in refractory materials, power plants, metallurgy, chemical industry, energy, transportation, heating and other industries. It is easy to transport, improves the utilization rate of waste, and has good economic and social benefits.

Pressure ball machine

1. The feeding part is mainly to realize the quantitative feeding to ensure that the material evenly enters between the rolls. The screw feeding device is driven by the electromagnetic speed regulating motor, and is rotated by the pulley and the worm reducer to force the pressed material into the main feeding port. Due to the constant moment characteristic of the electromagnetic speed regulating motor, when the amount of material of the screw feeder is equal to the amount of material required by the main machine, a constant supply pressure can be maintained to stabilize the quality of the pellet. If the feeding amount is too large, the feeding device is overloaded; if the feeding amount is too small, the ball is not formed. Therefore, the skilled operation technique is an important condition for ensuring the normal operation of the ball.

2. The transmission part, the main drive system is: motor – triangular belt – reducer – open gear – roll. The main engine is powered by an electromagnetic speed regulating motor, which is transmitted to the driving shaft through a pin and pin coupling through a pulley and a cylindrical gear reducer. The drive shaft and the passive shaft ensure synchronized operation through open gears. The passive bearing housing is equipped with hydraulics at the rear. The hydraulic protection device is driven by a hydraulic pump to drive high-pressure oil into the hydraulic cylinder to cause axial displacement of the piston. The front joint of the piston rod is placed on the bearing housing to meet production pressure requirements.

3. The molding part mainly refers to the main part, and the core part is the roll. When the feed between the two pressure rollers is too much or enters the metal block, the hydraulic cylinder piston rod is under pressure overload, the hydraulic pump will stop, the accumulator will buffer the pressure change, the relief valve will open the oil return, and the piston rod will be displaced. The gap between the pressure rollers is increased to allow the hard object to pass through the pressure roller, and the system pressure returns to normal, thereby protecting the pressure roller from damage. The machine can adjust the pressure according to the requirements of the pressure ball density, and the production is flexible.

The technician of the ball press machine should be familiar with the process flow and operating procedures, concentrate on the operation, contact the post in time when encountering problems, report the situation to the leader, coordinate the treatment, and keep abreast of the production situation and the operation of the mechanical equipment. Next, the Asian Union Xiaobian introduces you to the operating procedures of the high pressure ball press.

Ball press operating procedures

Before we understand the operating procedures, let’s take a look at how the ball press is installed, understand the structure of the installation, and understand how to operate safely.

1. Pressure ball machine installation

Before installing the ball press, the pipeline should be laid in strict accordance with the electrical specifications, and the strong and weak signal lines should be isolated and worn to avoid interference. In an outdoor open environment, independent external lightning protection measures should be taken. The dome itself should also be well grounded to prevent static buildup and other effects on the dome. When installing, properly connect the power cable, communication cable and video cable. When connecting, carefully refer to the installation instructions to confirm the communication method and corresponding pin definition. Generally, the equipment should be installed in the later stage of construction to avoid a large amount of dust on the construction site from invading the ball machine, directly affecting its use effect and life.

2. The ball machine operating procedures

(1) Preparation before starting the machine: Check whether the various control devices are flexible and reliable. Check whether the mechanical parts are normal. Pay attention to whether the screws are loose or not, because the use will vibrate, the transmission parts are flexible, and the lubrication is comprehensive. Before starting the machine, look at the hydraulic cylinder is full, do not burn the machine because of less oil.

(2) Boot. Open the ball machine → open the belt conveyor. After 3-5 minutes of idling, start the feeding and put down the feeder.

(3) During the operation of the ball press, always pay attention to the presence or absence of hard foreign matter in the raw materials. If any hard foreign matter is found, it should be removed immediately. To see if there is noise, if the noise is particularly loud, you should stop the inspection. During the operation, see if there is a fever in a certain part, such as a motor, etc. Don’t burn the motor because it can’t be hot.

(4) Whether the operator concentrates on the work and ensures that all parts and links of the machine are working properly. Due to the hard texture of the mineral powder, the improper size of the abrasive particles may cause damage to the roller, and the operator should control it in place. The operator should be proficient in the details of the pressure of the ball press, the right amount of raw materials, and so on. Therefore, excellent operators are an important part of improving the working efficiency and service life of the ball press.

(5) Downtime.

Pressure ball machine operation precautions

The main body of the ball press machine is powered by an electromagnetic speed regulating motor, which is transmitted to the drive shaft through a pin and pin coupling through a pulley and a cylindrical gear reducer. The drive shaft and the passive shaft ensure synchronized operation through open gears. The passive bearing housing is equipped with hydraulics at the rear. The screw feeding device is driven by the electromagnetic speed regulating motor, and is rotated by the pulley and the worm reducer to force the pressed material into the main feeding port.

1. During the succession of the ball press operator, it is necessary to check the overall sanitation of the ball press. If the double-roll ball socket of the ball press is not clean, it will lead to uneven feeding and will affect the output of the ball press. It also causes damage to the pressure roller.

2. The ball press should be inspected before starting the machine. The ball press must be fully prepared and rigorously inspected before starting normally. The components must be complete and complete, and all the fixing bolts and anchor nuts must be completed. It should be firmly tightened, and the machine accessories must not have any things or things that hinder the operation. After the inspection is completed, the production can be started. After the rotation speed of the ball press is normal, the material can be fed into the machine. The feeding must be uniform. When stopping, stop the feeding of the machine first. Wait until there is no remaining material in the hopper to stop the machine. .

3. After the ball machine is set up and the equipment is in normal operation, it should be noted that the conveyor conveys the material evenly, not too much, too much. Is the shooting rate normal? If the ball formation rate is too low or other conditions, you need to check the parking. Also, pay attention to whether there is abnormal sound in the production of the ball press. If the sound is too loud, you need to check it quickly. In addition, it is necessary to check whether all the fixing bolts have broken and loose signs during the operation of the equipment. Check the lubrication of each bearing is normal, with or without signs of overheating. Check whether the seals are tight and there are no signs of oil leakage. Check that the operation of the pressure roller and gear is normal.

4. In the production process of the ball press, keep the surrounding of the ball press machine at all times. If there is any leakage or sprinkling, it should be cleaned up in time. Be sure to be hygienic during work.

In the actual production process of the ball press, it is necessary to follow the standard operating procedures, reasonably arrange the production time, and must not continue to run continuously without exceeding the tolerance of the equipment. When starting, be careful not to start with load, otherwise there will be a crash and it will affect the motor.

The ball press must ensure that it is able to do its best. In the work, it must comply with the design and do not overload. When the parts meet the above-average design load, the wear will be intensified and the service life will be shortened. When the other conditions are the same, the stable load is less wear than the dynamic load, the fault is less, and the life is constant.

 

If you want to press the powder material into pellets, you need not only the briquetting equipment, but also some auxiliary equipment to complete the whole pellet pressing work. In the process of briquetting, the texture of the material will affect the forming of the dry powder briquetting machine, and the feeding method and the speed and quantity of the feeding will directly affect the pellet forming. Therefore, we must pay special attention to the production of dry powder briquetting. materials. To achieve the ideal and satisfactory molding quality, it is necessary to adjust at various angles and multiple links in the operation of the dry powder briquetting machine.

Because every link is not in place, it can become a source of problems and failures. For example, if the material is too wet, it may cause a series of problems such as machine blockage, unmode release, and insufficient strength of the egg. In the previous section, we introduced the texture of the material. The briquetting machine manufacturer introduced some precautions about the material placement.

Dry powder briquetting machine equipment needs attention when placing materials

1. The order of the operation. According to the specifications, the order of some links must be followed. When the material is placed, it is no longer possible to start the feeding operation without starting the briquetting machine, otherwise the load of the motor will be greatly increased. Many times the damage of the motor is caused by the direct loading at startup. After starting, we recommend to idle for a few minutes and then it is most suitable when feeding.

2. Whether the feeding is uniform. Excessive material placement or material breakage is two situations that should be avoided in the production of dry powder briquetting machines. If the material is placed too hard, the load of the briquetting machine becomes large and the clogging is prone to occur. The material is cut off, which delays the production work and reduces the efficiency. Therefore, the uniform delivery of materials according to the specific situation is the best way.

The ball press is a kind of equipment for pressing powdery materials into balls. Many users pay special attention to the quality of the press rolls when purchasing the ball press equipment. In fact, when the pressure roller is attached, the key to the molding of the pressure ball machine lies in the pressure. Therefore, do not ignore the molding pressure when purchasing.

The pressure of the ball press comes from several aspects:

1. The thrust of the hydraulic cylinder

The use of a hydraulic device and a hydraulic pump enables a constant pressure to be maintained between the rolls to shape the material.

2. the speed of the roll skin

Adjusting the speed of the roller skin should work hard on the ratio of the motor and the reducer. Now, for the small-type ball press, the electromagnetic speed-regulating motor is mainly used, and the speed of the motor is adjusted by the governor to adjust the speed of the ball press. However, the current largest electromagnetic speed regulating motor is only 90kw, how to adjust the large dry powder ball machine? That only uses a better variable frequency motor. The speed of the motor is adjusted by adjusting the frequency of the motor supply to adjust the speed of the ball press. Adjust the rotation speed of the ball press to lengthen the pressure of the material between the roller skins of the ball press, so that the molding effect is optimal.

In the actual operation of the ball press, iron pieces, stones and other hard objects are strictly prohibited from entering the machine. The particle size of the material to be processed must be less than 3 mm. It is strictly forbidden to start under heavy load. It is strictly forbidden for non-technical personnel to dismantle and adjust the equipment. Care and observe if the gear unit and housing are short of oil.

The ball press structure consists of three parts

Feeding part: If the feeding amount is too large, the feeding device is electrically overloaded, and if the feeding amount is too small, the ball is not formed.

Transmission part: The main machine is powered by the electromagnetic speed regulating motor, which is transmitted to the drive shaft through the pulley pin and the cylindrical gear reducer through the pin coupling.

Forming part: The core part is the roll. Therefore, it is very important to choose a professional pressure ball machine with high molding pressure.

In order to ensure the normal operation of the ball press, it is transmitted to the reducer. The reducer passes through the coupling and is transmitted to the drive shaft and then by a pair of open gears. The forming pressure is rapidly reduced to make the material enter the off-ball state and smoothly take off the ball. The data line and video line inside the ball press have been grounded accordingly, and the GND end of the ball press is connected to the ground to ensure that the device is effectively grounded. Therefore, it is very important to choose a professional pressure ball machine with high molding pressure.

In order to ensure the molding strength of the product, the molding pressure should be ensured, and the pressure is different from the diameter and width of the pressure roller, the distance between the two pressure rollers, the distance between the pressure rollers, the rotation speed of the pressure roller, and the shape and size of the bowl. The factors are related, and these specific parameter controls can be referred to the safety production guidelines. In addition, the structure of the ball press mechanism is also very important. If the parts of the machine can work together, we can safely produce it. If the parts are not coordinated, it may affect the production efficiency.

The roller press of the ball press is also a cause of influence on the molding. As long as the material and quality of the press roller can be guaranteed, basically the molding will not be affected by this. Therefore, you want the molding rate of your machine and equipment to be guaranteed. The first thing to do is to choose a good machine with a good quality letter.

When the ball ball is misaligned, the sleeve bolt can be loosened or the roller skin can be loosened with the shaft. After the ball is adjusted, the bolt can be tightened, or the roller bearing can be replaced. It can also be treated by re-grinding after welding. The deformation of the ball socket can also cause the pressing to be unformed or the shape is not uniform, and it is only necessary to repair or replace the ball socket. There is a gap between the two pairs of rollers. If there is a gap between the two rollers, the contact area of ​​the material in the two pressure rollers is reduced, and some materials are not pressed by the pressure roller, resulting in a “burr” of the finished ball of the ball pressing machine. In this case, we can adjust the gap of the pressure roller to the roller. Note that the gap between the two roller skins of the ball press machine is too small. Too small and too tight will cause the two rollers to lock and cannot rotate. Will reduce the life of the ball press roll.

There are many reasons that affect the press molding of the ball press. In addition to the factors mentioned in the ball press equipment itself, it may be that the particle size of the pulverized coal does not meet the requirements, the dry humidity of the pulverized coal is not adjusted well, and the selection process is made during the production process. The binder is not suitable for the selection of pulverized coal.

When the ball press presses the briquette material, it has requirements for its water content and material humidity:

1. Water content of briquette materials

The humidity (water content) of the ball press is too large, and it is prone to sticking to the ball. The strength of the finished ball is not enough. Under normal circumstances, the pressure ball machine must adjust the humidity and particle size of the material before pressing the material. The moisture contained in the material must be strictly controlled.

2. At which stage does the pressure ball machine regulate the material humidity?

The production process of the ball press is mainly: four processes of crushing, stirring, ball pressing and drying. Generally, it must be mastered at the mixer. When the item is too dry, it is easy to appear the signs of the two hemispheres and the broken ball when the ball is pressed; the item is too wet, and the ball is simply formed when the ball is pressed, and the ball-filled items of the briquette are not out of the ball and the car is boring.

3. During the ball pressing process of the ball press, the binder used is different. Is the water content debugging range the same?

With different binders, the water content debugging range is also different, because different binders have different physical and chemical properties. The amount added is also different. Under normal circumstances, the binder adopts cement and clay to form water with a moisture content of 18-20%; when the binder adopts magma or humic acid, the moisture content is 10-12%; when the composite binder is used, the moisture is 11 -13%; the binder is 2-4% when the asphalt is formed; the moisture is 12-18% when the binder is not formed, and the moisture is 15-15 when the binderless liquefied hard coal is extruded. 18%; moisture without binder is less than 2% when formed.

The ball-forming rate of the ball press is a standard for judging the quality of the ball press. The main function of the ball press is to press the material into a ball. Therefore, the level of the ball is one of the factors determining the quality of the device. Therefore, the pressure of the ball press must meet the standard, which also requires the quality of the ball press to pass.