Trommel screen also known as a rotary screen, is a mechanical screening machine used to separate materials in the mineral and solid-waste processing industries.
Working Principle
Materials fed into the trommel screen, is lifted up by the rotation and aerated as it falls back down. This action is repeated with each revolution along the length of the drum. The three coupling shafts are designed higher than the screening surface, which enables the larger particles being stirred up and thus increases the screening efficiency. The particles larger than screen mesh size are discharged as the upper size materials which could be delivered away by belt conveyor,while the particles smaller than screen mesh are discharged as under size materials.
