FIELD: agricultural engineering; cleaning of grain harvesters.
SUBSTANCE: device contains fan installed under shaking board and upper and lower sieve pans installed after fan and provided with upper and lower lipped sieves and chaffer rake. Grain and tailings augers are installed under lower sieve pan. Rear part of upper sieve pan is provided with detachable tilting plate with holes in upper part. Rear part of lower sieve pan is provided with cover with seal secured on hinge joints in lower part. Upper part of cover is fastened to lower sieve pan by means of threaded fasteners. Seal is mated with lower surface of tilting plate. Rubberized belt is connected to rear strap of upper sieve chaffer rake. Lower part of belt is attached to upper surface of tilting plate through holes arranged in rows. Holes of tilting plate coincide with rows of holes on rubberized belt at different positions of chaffer rake relative to upper sieve.
EFFECT: provision of reliable sealing of joints of sieve pans, improved blowing out of chaffer rake, increased separating capability.
2 cl, 3 dwg
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