GRAIN CLEANER Russian patent published in 2004 - IPC

FIELD: agriculture, in particular, separation of bulk materials, such as grain, by length and width. SUBSTANCE: grain cleaner has two perforated conveyors. Through opening outlet end of one conveyor is aligned with through opening inlet end of other conveyor so as to define angle between horizontal plane and opening generatrix, said angle exceeding friction angle and being less than 180 deg. Conveyor edges are made toothed. Grain cleaner is equipped with brush rotors for enhancing falling-in of particles. EFFECT: increased efficiency in cleaning of bulk material. 2 cl, 3 dwg