Precautions & maintenance steps before assembling the grinder

The shredder should be cleaned before assembly to ensure that the surface is clean. Pay attention to the cleanness of the ring die. If the material of the ring die of the screw hole is not clear, the ring die bolt hole is likely to be broken when the bolt tightens the ring. It is hoped to use a torque wrench to tighten the ring die to ensure the specified tightening torque.

Generally speaking, the new mold that matches the new roller, the ring mold and the old mold use the old roller, and each partial gap between the rollers is roughly the same. Therefore, the entire ring mold loading and unloading uniform can improve production efficiency. When assembling the roller, pay attention to the inspection of the bearing. If damage is found, it should be replaced in time. After the roller is assembled, make sure that there is a certain gap so that the roller can rotate freely. The transfer roller must be oiled on time. Once the roller lacks oil, it will cause the bearing and pressure roller to burn, and in severe cases, the entire roller will be scrapped.

And pay attention to before work, check the transmission parts, meters, valves, filling lubricating oil, and remove iron. The maintenance of carbon steel ring molds is more cautious.

1.   The fixed operation of the crusher should be fixed on the cement foundation. If you change the work place frequently, the shredder and the motor should be installed on the base made of angle iron. If the pulverizer is powered by a diesel engine, the power of the two should be matched, that is, the power of the diesel engine is slightly greater than that of the pulverizer, and the pulley grooves of the two should be consistent. The outer end surface of the pulley should be on the same plane.

2.  Before starting up, check whether the connecting bolts of each part of the unit are tight, whether the tightness of the transmission belt is appropriate, and whether the power cord is in good condition. Whether the motor shaft and the shredder shaft are parallel.

3.  Check whether the hammer is in good condition, the aperture of the sieve is suitable, and whether it is damaged. Drag the belt by hand to check whether the spindle rotates flexibly, whether it is stuck, bumped, or rubbed.

4.  After starting the machine, let the equipment run idling for 2-3 minutes to check whether the rotation of the rotor is correct and whether the sound is normal. It can work only after it rotates smoothly at the rated speed.

5.  Pay attention to the operation of the crusher at all times during work, and feed evenly to prevent blocking the car, and do not overwork for a long time. If there are vibrations, noises, excessive temperature of the bearing and the body, or spraying materials, you should stop and check immediately, and then continue to work after troubleshooting.

6.  The crushed materials should be carefully inspected, and no foreign objects such as stones, metals, etc. should be mixed to avoid damage to the machine.

7.  When the machine is running, the operator is not allowed to leave the unit, nor is it allowed to disassemble the machine during operation to observe the working conditions in the crushing chamber, and the maintenance tools must not be placed on the machine or packing.

8.  Operators should not wear gloves. When blockage occurs, it is strictly forbidden to reach into the filler hopper. When feeding, stand on the side of the grinder to prevent rebound debris from hurting the face.

9.  Don’t stop the machine immediately after the work is over, it should be idling for 2-3 minutes to allow the material in the machine to be discharged completely. Cleaning and maintenance work should be carried out after shutdown.

10.  Hammers are the main wearing parts. After wear, the whole set of hammers must be replaced at the same time whether the edges and corners are changed in the same direction or the corners are changed. When replacing new hammers, the whole set of hammers must be replaced at the same time. Trade new for old. The sieves are also vulnerable parts. If part of the sieves are damaged, they can be riveted. If they are severely damaged, new sieves need to be replaced.

11.  After 300 hours of operation of the crusher, the bearings should be cleaned and the oil should be replaced. When parking for a long time, the belt should be removed.