PNEUMATIC CLASSIFYING GRAIN CHANNEL Russian patent published in 2009 - IPC B07B4/08 

FIELD: agriculture.

SUBSTANCE: invention is related to equipment for cleaning and classification of grain and may find application in cleaning of grain and seeds in agriculture and produces of grain processing in flour-and-cereals and feed mill industry, and other fields. Pneumatic classifying grain channel with ascending air flow is produced with front, back and side walls, comprises net arranged with incline from front wall to the back one, and window for reception of initial grain material and discharge of treated grain material. On net surface there is at least one ledge arranged, which prevents motion of heavy inclusions to the outlet of cleaned material, with height of not more than fifteen-fold average thickness of treated material seed beetles. In net near ledge base there is at least one hole arranged for discharge of heavy inclusions of treated material. Ledge is oriented relative to side wall of channel at the angle that is different from the right angle. Ledge is made of sections with various directivity relative to side walls.

EFFECT: improved efficiency and quality of grain cleaning.

4 cl, 3 dwg