Feeding of gyratory crusher

1. When the crushing cone or frame liner is worn, in order to ensure the particle size of ore discharge, it is necessary to restore the original width of ore discharge. The way of adjustment is to raise the crushing cone and rece the discharge port. If the crushing cone has been raised to the top and the discharge port can not restore the original width, the frame or lining plate of crushing cone should be replaced or replaced at the same time. When raising the crushing cone, first take off the nut on the crossbeam, then screw the lifting ring into the screw hole at the upper end of the main shaft of the crushing cone, and then use the crane to lift the crushing cone. The lifting height should be 5-15mm higher than the original expected distance
after lifting the crushing cone, screw down the adjusting screw, press down the pressing sleeve and conical sleeve, and then return the screw. Then remove the key and screw down the nut until it contacts with the pressing sleeve. Then measure the width of the outlet. After meeting the specified requirements, clean up, fill with lubricating oil, and finally install the cap.

2. There is no contact between the crushing wall and the mortar wall when no-load, and the moving cone will proce pulsation with the selection of eccentric sleeve. During the crushing process, there is ore between the crushing wall and the mortar wall, and the crushing resistance increases. With the laminated crushing, the moving cone will reverse.

3. This caliber is transverse! If it is horizontal, the upper and lower parts are about 600mm, so the feed size is about 500mm. If the upper and lower size is 1200mm, it means that the feed particle size can reach 1000mm.

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5. What is the working principle of gyratory crusher
the working principle of the crusher is shown in Figure 4. The movable cone 2 is in the fixed cone 1, in which the space is a crushing cavity. The material is fed from the upper part. Due to the action of the eccentric mechanism 4, the cone of the moving cone periodically approaches and leaves the cone surface of the fixed cone, and makes the rotary penlum movement. When the moving cone approaches the fixed cone, the crushing action occurs, and when it leaves, the crushed material is discharged from the crushing cavity. The working principle of the circular cone crusher is similar to that of the jaw crusher, and can be regarded as a jaw crusher with continuous action
in addition to pressure, this kind of crusher also has bending force and grinding force, so it has strong crushing capacity and continuous action, so its proctivity is also high.

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7. It mainly depends on the output. The main output of the rotary crusher is more than 1000 tons.
the output of the cone crusher is slightly smaller

8. ‍&# 8205;< p> In mineral processing and other instrial sectors, gyratory crusher is widely used to crush ores with various hardness. The working principle of the rotary crusher is shown in Fig. 3-1. The working mechanism of gyratory crusher is composed of two truncated cones, movable cone and fixed cone. The spindle of the movable cone is supported in the hinge O and eccentrically arranged in the hollow fixed cone. When the spindle OA rotates, the prime line of the moving cone approaches and leaves the prime line of the hollow fixed cone. Each line of the moving cone seems to swing around o point, which is the same as the working principle of jaw crusher. When the movable cone is close to the fixed cone, the ore between them will be broken; When the movable cone leaves the fixed cone, the crushed proct is discharged through the ore mouth e to its own weight. The main crushing action of crusher is crushing, but the ore is also broken by bending action

the size of the gyratory crusher is expressed by the width of the feeding mouth / the width of the discharging mouth, such as 900 / 1600. The crushing work of the crusher is continuous. Compared with jaw crusher, it has the advantages of large proction capacity, balanced work, less power consumption per unit weight, and more uniform particle size. Its disadvantages are that the height of the machine is large, the structure is complex, the manufacturing and repair costs are high, there are many basic buildings, and the maintenance work is complex. The structure of 1400 hydraulic gyratory crusher is basically the same as that of ordinary gyratory crusher. The difference is that there is an oil cylinder in the lower part of the frame, and the crushing cone is supported on the upper part of the oil cylinder. There are three friction discs on the upper part of the oil cylinder. The upper friction disc is fixed at the lower end of the main shaft, and the lower friction disc is fixed on the stopper. The upper surface of the middle friction disc is spherical, and the lower surface is flat. When the crusher is working, the upper spherical surface and the lower plane of the middle friction disc slide relative to the upper and lower friction discs. Changing the amount of oil in the oil cylinder can change the size of the ore discharge port

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9. The rotary crusher is lubricated with thin oil and dry oil. The lubricating oil required by the family crusher is supplied by a special oil pump station. The oil flows into the lower space of the eccentric sleeve from the oil hole on the lower cover of the frame along the oil pipe, and then rises along the clearance between the main shaft and the eccentric sleeve, as well as the clearance between the eccentric sleeve and the bushing. After lubricating these friction swept surfaces, a stream of oil meets the oil retaining ring on the way up and flows to the bevel gear; The other rises to the thrust disc of the eccentric shaft sleeve. After lubricating the parts, the lubricating oil flows out through the drain pipe. The bearing of the transmission shaft of the crusher has separate oil inlet and outlet pipes. The suspension device of the spindle is regularly lubricated with oil by manual dry oil lubrication device. The disadvantage of this kind of crusher is that there is no reliable safety device, and the device of adjusting the discharge port is not only inconvenient to operate, but also has a small range of adjustment. Therefore, at present, hydraulic adjustment and hydraulic insurance are used in the rotary crusher. The hydraulic adjustment and the hydraulic safety device can make the adjustment of the width of the discharge port easy and make the safety device of the machine reliable. Our 1400 hydraulic rotary crusher. The structure of 1400 hydraulic gyratory crusher is basically the same as that of ordinary gyratory crusher. The only difference is that there is an oil cylinder in the lower part of the frame, and the crushing cone is supported on the upper part of the oil cylinder. There are three friction discs on the upper part of the oil cylinder. The upper friction disc is fixed at the lower end of the main shaft. The lower friction disc of the crusher can be fixed on the plunger in the crusher. The upper surface of the middle friction disc is a spherical surface and the lower surface is a plane. When the crusher is working, the upper spherical surface and the lower plane of the middle friction swept plate slide relative to the upper and lower friction plates. The size of the discharge port can be adjusted by changing the amount of oil in the cylinder. Hydraulic system of gyratory crusher. The accumulator in the system plays a role of safety, and the internal charging pressure is generally 1.8MPa. The one-way throttle valve has the function of quick start and slow reset, so as to rece the strong impact on the crusher ring reset. Before starting the crusher, the first thing is to add oil to the oil cylinder. In case of excessive oil, first open the stop valve, close the stop valve, and then start the oil pump. When the oil pressure is close to 1MPa, the crushing cone starts to rise. When the crushing cone rises to the working position, the stop valve is closed and supported on the frame through a bronze spherical bearing. The upper end of the main shaft is equipped with a feeding tray, and the lower part of the main shaft is made into a cone, which is inserted into the cone hole of the eccentric shaft sleeve. The upper part of the eccentric shaft sleeve is pressed with a large bevel gear, which is meshed with the small bevel gear of the transmission shaft to transfer the power to the eccentric shaft sleeve. The eccentric shaft sleeve is installed in the center sleeve of the frame, and its lower end is supported on the lower cover of the frame through bronze thrust bearing. In order to rece friction, bronze bushing is installed in the taper hole of eccentric sleeve and the sleeve in the center of frame. 1. Overload operation of equipment is not allowed, such as too much or too large ore feeding, too small ore outlet, etc. 2. The maximum block size of ore feeding should not exceed 80-85% of the width of ore feeding mouth. 3. The adjusting gap of ore discharge outlet should be within the range of 100-160 mm (the crushing cone is 1:3, that is, the crushing cone rises by 6 mm and the ore discharge outlet decreases by 1 mm). 4. During the operation, it is strictly forbidden for metal iron and other foreign matters to enter the crusher cavity. If they enter, they should be stopped immediately for elimination. 3、 Preparation and inspection before equipment operation 1. Check whether there is enough lubricating oil in the oil tank, whether the oil quality meets the requirements, and whether the oil filter is not clean. 2. Try on the oil pump and check the oil pump and pipeline for oil leakage. 3. Whether the oil pressure is between 0.8-1.5kg/cm2. 4. Check the oil return situation is not smooth, the oil flow is not stable. 5. There is no looseness in the foundation screw of each part of the machine body and the frame interface screw in the frame. 6. Whether the screws, pulley and key of the transmission shaft are loose. 7. If there is any material in the crusher cavity, it must be removed before starting. 8. Whether the easily worn parts of the engine body (such as the lining plate of the crushing cone and the lining plate of the middle frame) are seriously worn or cracked. 9. Check whether the funnel is blocked or severely worn. 10. Check whether the hand wheel of oil immersed rheostat in electrical part is at zero position. 11. Check the contact condition of motor carbon brush. 12. Check the distribution box, operating mechanism is not flexible. 13. Check whether the pointer of ammeter is at zero. 4、 Operation method 1. Equipment operation method (1) before operation, it must be inspected item by item according to the inspection content 2) The oil pump should be started first, and the motor can be started only after the return oil is normal 3) Pay special attention to the sound of motor and crusher when starting, and stop running immediately in case of any abnormality 4) After the normal operation of the equipment, the feeding will be started 5) The feeding must be stopped when the operation is stopped, and it can be stopped only when there is no ore in the crushing chamber 6) Stop the oil pump. 2. First, check whether the oil immersed rheostat is in the zero position and whether the short-circuit switch is open 2) Press the start button 3) Slowly transfer the hand wheel of the oil immersed rheostat to the starting position until the motor reaches the rated speed 4) Close the short circuit breaker 5) Observe whether the ammeter indication is normal 6) The motor shall not be started frequently. Generally, it shall not be started more than three times continuously. 3. Stop operation sequence: (1) stop feeding before stop, and stop the crusher when all ore in the crusher cavity is discharged 2) The operator presses the stop button 3) Turn the hand wheel of the oil immersed rheostat back to the zero position and open the short-circuit knife switch 4) After power failure without notice or shutdown with load, the ore in the crusher cavity must be taken out for driving after power supply. reference material: http://www.jxylwl.net