PNEUMATIC SEPARATION DEVICE FOR GRAIN CLEANER Russian patent published in 1998 - IPC

FIELD: agricultural machinery and equipment. SUBSTANCE: this relates to cleaning loose materials by air stream and can be used in agricultural production, flour-milling, flour-storage, mixed-feed industries. Pneumatic separation device of grain cleaner has two pneumatic separation systems with settling chambers, pneumatic separation and air supply passages, diametrical fan with suction opening and delivery pipe union installed between pneumatic separation systems, charging units located in walls of pneumatic separation passages, grain and impurities outlet units. Delivery pipe union of diametrical fan is conjugated with pneumatic separation passage of first aspiration and is also connected with additional passage created by wall adjacent to suction opening of diametrical fan and pivotally connected wall of pneumatic separation passage facing towards it which ends in grate in lower part against discharge opening. Installed in grain discharge unit of first aspiration are pivoted and spring-loaded planes adjacent to each other with their ends kept in contact with curvilinear adjacent surfaces of delivery pipe union of diametrical fan delivery pipe union and pneumatic separation passage. EFFECT: high efficiency. 1 dwg