GRAIN CLEANING MACHINE Russian patent published in 2001 - IPC

FIELD: agricultural engineering. SUBSTANCE: grain cleaning machine has receiving part including feeder and cylindrical screen for separating coarse contaminants, closed pneumatic system with cross-flow fan, pneumatic separating channel with feeding window in its wall, air supplying channel and settling chamber. Pressure branch pipe of cross-flow fan is joined to inlet window of baffle-type air cleaner. Pressure branch pipe is communicated with pneumatic separating channel through auxiliary channel defined between wall adjacent to air supplying channel and settling chamber wall faced to above mentioned wall. Pneumatic feeding device positioned at other end of settling chamber is disposed in zone where feeding window is communicated with pneumatic separating channel. EFFECT: increased quality of cleaned grain material and improved working conditions. 1 dwg