The core of developing a ball mill maintenance plan is to divide it into cycles, focus on key areas, and prioritize execution. I will help you organize the key points into a clear maintenance framework, and following it can make the equipment more durable and less prone to malfunctions.
1、 Maintenance cycle and project
Daily check
Lubrication system: Check the oil level and quality to ensure smooth oil flow.
Bearing temperature: If the temperature during operation is ≤ 65 ℃, stop the machine immediately if there is abnormal temperature rise.
Bolt tightening: Check if the anchor bolts and lining plate bolts are loose.
Transmission components: Check the wear or looseness of belts, gears, and couplings.
Feeding and discharging: Ensure uniform feeding and observe whether the particle size of the discharged material is normal.
Weekly maintenance
Lining wear inspection: If the thickness of the lining decreases by ≥ 30%, replace it in a timely manner.
Lubricating grease replacement: Supplement or replace lubricating grease according to usage.
Motor and reducer: Check the stability of the motor current and whether the reducer has any abnormal noise or oil leakage.
Cleaning residual materials: Clean the residual materials inside the cylinder after shutdown to prevent clumping.
Monthly maintenance
Internal inspection of the cylinder: Check for cracks or severe wear on the inner wall, lining plate, and compartment plate.
Gear meshing condition: Check the meshing clearance of the large and small gears, and adjust or repair the tooth surface wear if necessary.
Electrical system testing: Check the insulation performance of the motor and whether the wiring terminals are loose.
Cooling system cleaning: Clean the cooling fan and heat sink to prevent overheating caused by poor heat dissipation.
Long term shutdown maintenance
Thoroughly clean: empty the material, clean the inside of the cylinder, and avoid material compaction.
Rust prevention treatment: Apply rust proof oil to metal components such as bearings and gears.
Regular turning: Manually turn 1-2 times a week to prevent bearing deformation or jamming.
2、 Key component maintenance
Lubrication management
The temperature of the main bearing is ≤ 55 ℃. Change the gear oil every 3 months and clean the oil filter regularly.
Gear protection
The recommended hardness for large gears is ≥ HB300, and for small gears it is ≥ HRC45. Regularly check the sealing to prevent dust from entering.
Lining plate and steel ball
Check the wear condition weekly, and replace the lining plate in a timely manner when it is worn through or the diameter of the steel ball is worn down by 2/3.
Transmission system
Check the belt tension and gear engagement daily, and regularly clean dust and oil stains.
3、 Development of maintenance plan
Clearly identify the responsible person: designate a dedicated person to be responsible for maintenance to avoid omissions caused by unclear responsibilities.
Develop a schedule:
Daily: Check the appearance, operating parameters, and transmission components of the equipment.
Weekly: Clean the dust on the surface of the equipment, check the wear of the grinding medium and lining plate.
Monthly: Replace the lubricating oil of the gearbox, check the bearing temperature and lubrication condition.
Quarterly: Conduct a comprehensive inspection of the tightness of equipment connection bolts and calibrate monitoring instruments.
Track spare parts inventory: Ensure that major accessories are readily available to avoid maintenance delays due to missing parts.
Coordinate production and maintenance: Strengthen equipment patrol inspections and make timely adjustments in case of abnormal situations.
4、 Common fault warning
Abnormal noise: It may be due to bearing damage, gear wear, or loose bolts.
Large current fluctuation: Check for overload, material blockage, or motor failure.
Abnormal discharge particle size: It may be due to wear of the lining plate, damage to the compartment plate, or improper grinding material ratio.
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