The operation method of ultrafine grinding is as follows:
（1） Preparation before startup
1. Check the integrity and fastening of the parts, especially the high-speed running parts such as hammers, which must be firmly fixed.
2. Check if the crusher is securely mounted on the machine base.
3. Check the lubrication condition of the bearings.
4. Open the door cover of the crushing chamber and check for any debris in the chamber.
5. Check the fastening of the deflector and remove any debris adsorbed by the magnet.
（2） Power on
1. After the above inspection is completed, start the motor for no-load operation. If the technical condition of each part is normal, wait for the speed to return to normal before starting the load operation.
2. During operation, there should be no jamming or friction noise.
3. The sieve should be installed firmly, sealed, and free of material leakage, and the sieve frame should be securely fastened.
4. If abnormal noises, blocked discharge, or overheating of bearings or motors are found during the work process, feeding should be stopped, and the vehicle should be stopped for inspection and troubleshooting.
5. After the work is completed, the residual materials in all parts of the machine should be cleaned. If the machine is not in use for a long time, it must be wiped clean and covered with a tarpaulin.
In daily use, maintenance and upkeep of ultrafine crushers are equally important:
1. During the production process, it is necessary to regularly check the temperature rise of the bearings. When the temperature rise exceeds 50 ℃, the machine should be stopped for inspection to identify the cause and eliminate the fault.
2. When the new machine is running, the transmission belt is prone to elongation, and attention should be paid to adjusting the appropriate tightness of the belt to ensure its working life.
3. Fragile parts should be regularly inspected and replaced in a timely manner to ensure production quality and quantity.
4. Blades and liners should be regularly checked for wear. If wear occurs, productivity will decrease and particle size will become coarser. If wear is detected, it should be replaced immediately.
5. The host and graded flow bearings are lubricated with grease, using special grease No. 2 with a degree of 265-295.
6. The grease replacement period for bearings is 2000 hours, and the filling amount of lubricating grease should be 1/2 (top measurement) or 3/4 (bottom measurement) of the space inside the bearing cavity. Do not fill too much lubricating grease, otherwise it will cause the bearing temperature to be too high.
7. The grease replacement period for the spiral feeder is 4000 hours, and ordinary calcium based lubricating grease is added.