Circular vibrating screen or round vibrating screen is a multi-layer, highly efficient and new vibration screen machine that moves on a circular motion. It adopts drum eccentric shaft exciter and eccentric block to adjust the vibration amplitude, so that the screening line is long and the screening specifications are more. Since it has such features as reliable structure, strong exciting force, high screening efficiency, low vibration noise, long service life, convenient repair and safe use, circular vibrating screen is widely used for the product classification in mine, building material, transportation, energy and chemistry.