Rotary Drum Screen is a very widely used machine in sorting technology, high screening efficiency. The cylinder of the roller sieve is generally divided into several sections, depending on the specific situation, and the screen holes are arranged from small to large, with the same aperture on each section. Roller sieve mainly has motor, reducer, drum device, frame, sealing cover, inlet and outlet. According to the demand, the Rotary Drum Screen can be designed as shafted type and shaftless type, and the circular vibration machine supports special customized production.