What are the reasons for the vibration of the ball mill?
For the production line of the aerated concrete industry, the ball mill is an indispensable equipment in the grinding production line. However, during the production process, the transmission system sometimes vibrates greatly. So what are the reasons for the vibration of the ball mill?
- The teeth of the gear will enter the mud during operation, resulting in poor lubrication
The ball mill is an open gear transmission device, equipped with gears and inner and outer covers, but the sealing performance is still poor. When the bushing bolts near the large gear ring are loose, the leaked mud easily enters the gear meshing surface, destroys the lubricating oil film on the tooth surface, and generates great impact noise and transmission system vibration.
- Wear of pinion bearings
There is a double row spherical roller bearing on both sides of the pinion bearing. After a period of use, the bearing parts wear out, the gap between the inner ring, the outer ring and the roller increases, and radial runout occurs when the pinion shaft rotates, which will cause the gear tip clearance to change continuously. It is prone to shock, vibration and noise, and the surface wear of gear teeth is aggravated.
- The tooth surface of the mill gear is severely worn
After the ball mill has been running for a long period of time, the upper tooth surface of the pinion gear is first ground from the concave platform, and the tooth side clearance increases. When the ball mill is running, impact vibration occurs, and a great impact sound is generated, and the wear between the tooth surfaces is aggravated.
- Vibration caused by the displacement of the transmission parts
After the ball mill works for a long time, the anchor bolts of the motor, reducer and pinion bearing seat in the transmission part will sometimes loosen, and the transmission part will move, so that the axis is not in the same straight line, and vibration occurs. The transmission system of the ball mill should be stopped for testing, and then the transmission system should be re-aligned.
- Wear of the nylon pin of the coupling
After the nylon pin works for a certain period of time, the surface of the cylinder will wear and the diameter will become smaller, which will cause shock and vibration of the coupling half. At this time, the nylon pin should be replaced in time to avoid damage to the coupling.
- Motor speed is unstable due to short circuit between turns
During operation, the motor current is unstable, and at the same time, the large and small gears’ damage current fluctuations will cause large periodic vibrations.