The basic working principle of the roller screen is: the particles rotate to a certain height with the screen cylinder, and are thrown down due to gravity, and are filtered through the screen to form screening.

The roller screen is a shaftless transmission in the middle, the power end is supported on the frame by bearings, and the other end is supported on the roller cylinder by supporting wheels. The utility model has the advantages of simple structure, simple operation, and material with different particle sizes can be obtained within a certain range by changing the screen. It is suitable for the separation of different particles.