COLUMN TYPE AERATOR FOR GRAIN Russian patent published in 2020 - IPC A01F25/08 F26B9/10 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture and is intended for ventilation of grain materials. Aerator comprises a perforated part, above which there is a non-perforated part of the column, made in the form of tubular elements with a fan installed above the last element. Size of perforations of lower part is more than average size of grain material. Cylindrical perforated insert is inserted into inner cavity of perforated part without a gap with possibility of rotation, size of perforations is larger than size of perforations of lower perforated part of column. Inserted into the inner cavity of the insert is an additional cylindrical perforated insert with a decreasing living section from bottom to top. Additional insert is inserted without a gap with the possibility of rotation and movement along the vertical, and its dyne is not more than the length of the perforated part.

EFFECT: technical result is improved functionality, convenience and safety of use, as well as high quality of layer-by-layer action of air flow on ventilated grain material.

4 cl, 4 dwg