When an ultrafine pulverizer develops abnormal operating conditions, operators should inspect the bearings, drive system, wear parts, lubrication system, and other key components in sequence. Regular maintenance can help reduce unplanned downtime and maintain stable grinding performance.
1. Check Bearing Temperature
During operation, regularly monitor the temperature of the main bearings and other critical bearings. If the bearing temperature rises abnormally or exceeds the limit specified by the equipment manufacturer, stop the machine and identify the cause before restarting.
Possible causes include insufficient lubrication, excessive load, misalignment, or bearing wear.
2. Adjust the Drive Belt
During the initial operating period of a new ultrafine pulverizer, the transmission belt may gradually elongate. Check the belt tension regularly and adjust it to the recommended level.
A belt that is too loose may slip and reduce transmission efficiency, while excessive tension can increase the load on the bearings and other transmission components.
3. Inspect Wear Parts
Grinding wear parts should be inspected regularly and replaced when necessary. Timely replacement helps maintain the required grinding capacity and finished particle size.
Important components may include grinding blades, liners, grinding rings, and other parts that are directly exposed to the material.
4. Check Blade and Liner Wear
The blades and liners inside the grinding chamber should receive particular attention. Excessive wear can reduce grinding efficiency, lower production capacity, and produce coarser finished powder.
When significant wear is identified, replace the affected components according to the equipment manufacturer's maintenance requirements rather than continuing operation with severely worn parts.
5. Maintain the Bearing Lubrication System
The main unit and classifier bearings generally use grease lubrication. The specific grease grade should follow the equipment manufacturer's specifications and the actual operating environment.
Operators should avoid mixing incompatible greases and should maintain a regular lubrication schedule.
6. Replace Bearing Grease Regularly
For machines using grease-lubricated bearings, the grease replacement interval should be determined according to the equipment manual, operating speed, load, and working environment. The grease quantity should also remain within the bearing manufacturer's recommended filling range.
Overfilling the bearing housing with grease can increase friction and cause excessive temperature rise. Insufficient lubrication, on the other hand, can accelerate bearing wear.
7. Maintain the Screw Feeder
The screw feeder also requires regular lubrication and inspection. Check the lubrication condition and replace the grease according to the manufacturer's recommended service interval.
During maintenance, inspect the feeder shaft, bearings, seals, and drive components for abnormal wear or material buildup.
For customers requiring replacement or customized mechanical components for ultrafine pulverizers, Hansheng Automation can provide precision machining based on customer drawings and technical specifications, including shafts, bushings, housings, liners, rotating components, and other non-standard parts used in pulverizing systems.
