FIELD: agricultural engineering.
SUBSTANCE: pneumatic system has hopper and charging devices for grain and head remains, said devices being connected with fan through feeding and return air ducts and material discharge pipelines. Grain and head remains charging devices are connected to each other in series so as to define single semi-closed system. Grain discharge pipeline is communicating with return air duct through grain hopper and its separator-discharge device. Return air pipeline has separator-air cleaner for cleaning of air from weed and is connected to fan suction deflector. Return air pipeline of charging pipeline for head remains is connected to inlet window of grain charging device and communicating with discharge pipeline through separator-air cleaner for cleaning of air from head remains.
EFFECT: reliable transportation of threshing products, increased efficiency and provision for preliminary cleaning of hopper grain.
2 cl, 2 dwg
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