Summary: Grinding mill is very important powder production equipment. Recent years, manufacturers all did much work in how to reduce the noise of grinding mill, but with the limitation of various factors, the vibration and noise of grinding mill do not get solved fundamentally. ...

Grinding mill is very important powder production equipment. In recent years, manufacturers have made great efforts to reduce the noise of grinding mills. However, restricted by various factors, the vibration and noise of grinding mills have not been fundamentally solved. Vibration is the main reason that causes noise of grinding mill, so vibration control not only can protect equipment and operators from being harmed, but also can effectively reduce the noise pollution. In this article, we mainly talk about reasons and solutions about vibration and noise in grinding mill.

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grinding mill

Reasons About Vibration And Noise Producing In Grinding Mill

The noise of grinding mill is not only related with the material, manufacturing and installation of spare parts, but also is closely related with the structure design of grinding mill. Here are the reasons about vibration and noise producing in grinding mill:

  • 1. Improper structural design and insufficient working accuracy lead to vibration and noise in the grinding mill.
  • 2. The deviation in the roller manufacturing causes the radial runout, leading to the unstable running of grinding mill, which causes the vibration. If the roller does not get adjusted, in the grinding process, the unstable operation will also produce noise.
  • 3. The mismachining tolerance of roller and uneven material cause the unbalance of roller. And accordingly, the grinding mill will vibrate.
  • 4. The low positioning accuracy of the roller bearing, the improper selection or adjustment of the bearing, and the unreasonable structural design of parts matched with the bearing will all reduce the rotation accuracy and service life of the bearing. In this case, the grinding mill works with load and its noise will also rise.

Besides, during operation, uneven heating of the roller and variable grinding force will cause the roller to bend and deform.

Solutions About Vibration And Noise In Grinding Mill

The vibration and noise reduction solutions for the grinding mill are mainly formulated according to its structural design.

  • 1. Optimize the design about roller bearing level. Adopt conical connection at the end of roller bearing and roller shaft in order to improve the rotation accuracy of roller and to reduce noise.
  • 2. Improve the rigidity and strength of roller in order to avoid sympathetic vibration.
  • 3. Strictly control the installation accuracy. While installing the spare parts, operators should strictly follow the rules. Make sure the grinding mill is well lubricated to reduce noise.
  • 4. Optimize the feeding device and the vibration of the main body.