ASPIRATION GRAIN CLEANER Russian patent published in 2012 - IPC B07B4/00 B07B11/06 

FIELD: process engineering.

SUBSTANCE: invention relates to grain and loose materials separation equipment, particularly, to pneumatic sizing of loose materials by their aerodynamic properties. It may be used for grain cleaning in agriculture or in production of construction materials, etc. Proposed machine comprises aspiration chamber and initial material loading device. Said loading device represents a plate, its length making at least 300 mm, arranged at angle to normal speed of material vertical motion along bin wall and comprising inclined webs, their height h not exceeding 20 mm. Said inclined webs are arranged at loose mix natural slope angle φ to said plate that exceeds or equals angle β of plate inclination to horizontal plane to satisfy the relationship arcsin(S/K)≤arcos(f/L), where S is the length of adjacent leg of plate inclination to horizontal plane β; K is plate width; f is distance between inclined webs, and L is inclined web length. U-like flaps made from sheet steel are arranged at aspiration chamber inlet parallel with each other.

EFFECT: higher quality of separation.

4 cl, 4 dwg