PNEUMATIC SIEVE DEVICE Russian patent published in 2009 - IPC B07B4/02 A01F12/44 

FIELD: agriculture.

SUBSTANCE: invention is related to the field of grain and seeds classification, and may be used in agriculture and cereal-processing industry. Pneumatic sieve device includes receiving accessory joined to sieve device, cleaning, classifying and control sieves, vertical pneumatic separating channel joined to rectangular and cylindrical compartments of settling chamber. Additionally device is equipped with inclined pneumatic separating channel, receiving settling chamber joined to upper part of feedthrough sieve, vertical air-supplying channel with intermediate louver wall, having rotary gate in its upper part and under-sieve air-supplying channel. Cylindrical compartment of settling chamber is equipped with diametrical fan. Area of diametral fan injection is connected via inclined pneumatic separating channel, receiving settling chamber, vertical and under-sieve air-supplying channels with low part of vertical pneumatic-separating channel. Electric drive of diametrical fan is equipped with frequency controller of rotations number.

EFFECT: increased efficiency and quality of grain cleaning, and also reduced energy inputs.

2 cl, 1 dwg