PNEUMATIC SYSTEM OF WINNOWER Russian patent published in 2009 - IPC B07B4/02 A01F12/44 

FIELD: engines and pumps.

SUBSTANCE: invention is related to agricultural machine building, in particular to machines for shelling and separation of grains. Pneumatic system of winnower includes pneumatic separating channels of primary and secondary shelling, two settling chambers separated by wall, dust arrester, diametrical fan, discharge nozzle of which is connected to inlet window of dust catcher, air supply channel, accessories for supply of grain mixture and withdrawal of fractions, mechanisms of air speed control in pneumatic separating channels, nozzle for spent air exhaust. Air supply channel with its one end is connected to outlet window of dust catcher, and by the second end - to pneumatic separating channel of secondary shelling. Nozzle for exhaust of spent air is connected by its one end to outlet window of dust catcher, and with its other end - to atmosphere. Pneumatic separating channel of primary shelling also communicates to atmosphere.

EFFECT: increased quality of grains shelling.

1 dwg