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Key Maintenance Points for Ultrafine Mills in Use


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Ultrafine mills are generally used in industries such as industrial and mechanical. Long-term heavy-duty operation affects the service life of the ultrafine mill to a certain extent. Even improper operation or feeding problems during use can easily affect the performance of the mill. Here, we introduce the key maintenance points for ultrafine mills in two sections, hoping to help you when using the mill.

1. The mill motor is lead-sealed before leaving the factory, and the coupling has been aligned; please do not loosen it.

2. Regularly clean the iron impurities on the permanent magnet cylinder and the permanent magnet plate of the mill feeder.

3. Regularly check the fineness of the ground product.

4. Regularly clean or replace the dust collector bags (ensure bag permeability), and regularly check the working condition of the solenoid valves (to see if they work properly).

5. Regularly check the wear of each wearing part of the mill to see if it is normal wear.

6. Always pay attention to the vibration of the mill.

7. When the mill hammers are severely worn and need to be replaced, pay attention to weighing them to ensure that the weight difference between the two opposing (180 degree direction) hammers on the hammer pin shaft is ≤1 g, and the total weight difference of the hammers on the two opposing (180 degree direction) hammer pin shafts is ≤2 g.

8. When the mill screen is severely worn and needs to be replaced, pay attention to the flatness of the new screen and whether the screen size is reasonable, and whether the installation is in place. It is recommended to install the screen with the rough side facing inward.

9. The opening degree of the air supplement door of the impeller feeder should be adjusted appropriately.

10. If abnormal conditions such as high vibration and high noise are found, stop the machine immediately for inspection.

11. The main shaft bearing should be greased with 80 g of grease every 40 hours of operation, but only up to 60%. After 1800 hours of operation, the bearing box cover should be removed and all used grease replaced. When fresh grease is added, apply grease to the roller and bearing ring area, and add 1/3 to 1/2 of the grease to the bottom box. Never add too much grease.

12. When the output of the ultrafine mill suddenly drops, apart from raw material factors, focus on checking whether the air supplement door is in place, whether the pipe is leaking, whether the pulse bag is blocked, and whether the solenoid valve and fan are working properly.