Do You Know the Application and Difference of Shaft and Shaftless Trommel Screen

Do You Know the Application and Difference of Shaft and Shaftless Trommel Screen

Do you know the application and difference of shaft and shaftless trommel screen? If not, following mentioned points are the matters, please attach much importance to them.

Trommel screen has two kinds of structures of shaft and shaftless. Both of them can be used for some common bulk materials, while according to the application working condition, the appropriate one must be selected for some materials with special properties.

Trommel screen with shaft

The drum is fixed aslope on the main frame. Motor, reducer and drum are connected by a coupling, and the driving drum rotates around an axis. Owing to the inclination and rotation of drum, the materials on the screen surface can move forward and roll. The materials will be divided into two parts: the qualified one will be discharged from the bottom hopper, and the unqualified one will be discharged from the end outlet. The rotation of the material in the drum makes the blocked material bounce out of the aperture, preventing the mesh blocking.

Trommel screen with shaft is generally used for screening granular material with large density, such as: sand, coal, limestone, fertilizer, compost and mineral, etc.

Shatless trommel screen

The shaftless trommel screen is installed horizontally. Generally, the rotate speed of the drum of motor wheel gear or motor chain is very slow, and the length of the drum can be designed longer to increase the screening efficiency. There is a delivery plate inside the drum, which can make the material move forward. The material which is larger than mesh size will be discharged at the end outlet, and the material which is smaller than mesh size will be discharged at the bottom discharge hopper. If the material is household garbage, a cutting tool is also can be added to rive some plastics bags, etc.

Shaftless trommel screen is usually used for screening material with small density, such as: waste, wooden chips, activated carbon, fertilizer, construction material, chemical material, etc.