Several reasons for the strong vibration and noise of the pulverizer

1. The body structure design is unreasonable and the machining accuracy is not high, which produces noise.

2. The radial runout caused by the manufacturing error of the grinding roller, the operation is not stable and the vibration is generated. If the grinding rollers are not leveled, the grinding will not run smoothly and noise will be generated.

3. Due to the machining error of the grinding roller and the uneven material selected, the grinding roller is unbalanced and vibrates.

4. The positioning accuracy of the roller bearing steps is not high, the bearing selection and adjustment are improper, and the parts and structure design that match the bearing are unreasonable, which will make the bearing rotation accuracy not high, the service life is not long, and the noise under load will increase.

5. Due to the machining error, the wheel is unbalanced and vibrates. In addition, the tension of the belt is too large, and a huge shock occurs when it is started. If the diameter of the grinding spring between the fast and slow rollers is too small, the strength and rigidity are not enough. Unstable operation produces noise when under load.

6. In addition, during the operation, due to the uneven heating of the grinding roller, the thermal expansion of the grinding roller along the axis direction is different. At the same time, under the action of the grinding pressure, the grinding roller is bent and deformed, resulting in uneven grinding effect and increased grinding noise. big. If the abrasive humidity is high, there will be local sticking to the roller. If the grinding brush cannot be cleaned in time, it will also cause the grinding roller to vibrate.