PNEUMATIC CLASSIFIER FOR GRAIN CLASSIFICATION Russian patent published in 2024 - IPC B07B7/08 

FIELD: agriculture.

SUBSTANCE: proposed invention relates to devices for grain separation, can be used in agriculture, flour-and-elevator and feed mill industry, as well as for separation of loose materials in other branches of national economy. Pneumatic classifier for grain classification includes vertical annular separation channel formed by inner and outer cylindrical walls, loading opening, separation products receivers, fan. Pneumatic classifier is equipped with a flat pneumatic nozzle installed in an annular gap between cylindrical walls radially from top to bottom, which is connected to a pressure fan. Loading window is made of rectangular shape and is located above cylindrical walls in front of flat pneumatic nozzle. Long side of the rectangle of the loading window is conjugated with the nozzle and is equal to the radial annular gap between the external and internal cylindrical walls of the channel. Upper part of the annular separation channel is hermetically closed with a cover. Under the lower end of the annular channel there are outlet nozzles arranged concentrically with it for supply of heavy and light particles to receivers of separation products.

EFFECT: higher accuracy of grain grading.

3 cl, 6 dwg