COMBINED GRAIN CLEANING MACHINE Russian patent published in 2003 - IPC

FIELD: agricultural engineering. SUBSTANCE: grain cleaning machine has casing with two rows of separating sieves and pneumatic separating channel, stone and garbage separating sieves mounted on vibratory supports. Drive imparts vibratory motions to casing for separating sand and stalks from two rows of separating sieves. Grain containing stones and light contaminants is delivered into pneumatic separating channel, where light contaminants are separated by means of fan. Separating wall with soft sealing gate is positioned under two rows of separating sieves. Gate provides for uniform feeding of grain mixture containing stones and light contaminants onto sieves of stone and light contaminant collecting device. Said sieves are vibrated to provide for separation of grain, stones and contaminants. EFFECT: simplified and compact construction, reduced dustiness, decreased power consumption. 1 dwg