GRAIN-CLEANING MACHINE Russian patent published in 1995 - IPC

FIELD: agricultural engineering. SUBSTANCE: grain- cleaning machine has frame 1 carrying loading conveyor 2, receiving chamber 3 and two sieve pans 4 and 5 installed under receiving chamber in tiers and having inlet and outlet sides and chutes. Each sieve pan has upper and lower sieves, two dehullers installed at outlets of sieve pans and provided with receiving and discharging hoppers. Machine also has delivering conveyor and aspiration system including fan 6 and air duct 7 with settling chamber 8 and discharge outlet 9. Air duct 7 communicated with receiving chamber 3. Receiving hopper of one dehuller is located at outlet side of lower sieve of upper sieve pan 4, and receiving hopper of other dehuller, at outlet side of upper sieve of lower sieve pan 5. Discharge hoppers of both dehullers are communicated by means of air duct 10 with settling chamber 8 of aspiration system and receiving end of delivery conveyor whose outlet end is connected with receiving side of upper sieve of lower sieve pan 5 by means of pipeline 16. EFFECT: higher efficiency. 3 cl, 2 dwg