Causes of screen plugging

During the use of the screen, materials often block the screen holes, causing damage to the screen. Especially when the screen mesh is small, due to the diversity of material particle shapes, the reasons for blocking holes are also various. What is the reason for blocking holes?

1、 Causes of screen hole blockage

The reasons are as follows:

1. There are a large number of critical material particles near the separation point. That is, the particle size of broken gravel and the mesh size of the screen are crucial. In the process of screening stone, this kind of particle is stuck in the screen, which can not be successfully screened and causes blocking, which is called critical blocking.

2. There are many material shapes with multiple contact points on the screen.

3. There are many materials of flaky particles. Due to breakage or the stone itself, there are many flaky materials in the stone, and the flaky materials in the screening itself cannot be screened successfully. At the same time, the flaky materials are interwoven into a network, which hinders the screening of other materials and causes hole blockage.

4. The wire diameter of the preparation sieve is too thick.

5. The screened material has high moisture content and contains viscous substances such as silt. Because the stone contains mud or needs to be cleaned, the fine-grained stone is bound to each other by water, on the one hand, the soil is bound to the surface of the screen, making it difficult to screen the material and blocking the hole.

The fixed screen can not effectively overcome the critical material particles blocked by the screen hole, resulting in the low screening efficiency of the vibrating screen. Generally, the screening efficiency of fixed-screen vibrating screen is less than 50%. Even increasing the amplitude can not effectively solve the problem of blocking, and increasing the amplitude may affect the service life of the screen.