GRAIN SEPARATOR Russian patent published in 1998 - IPC

FIELD: agricultural engineering. SUBSTANCE: separator has screw conveyors consisting of screws 1 and wave-shaped bottom 2 provided with screen zone 3 and combs. Grain transportation means in form of comb 5 are secured on screws 1 above screen zone 3. Members 6 of comb 5 are made in form of steps directed from axis of screw 1 to periphery in side opposite to side of screw rotation for shaking the grin. Delivery board 7 and fan 8 are arranged under screen zone 3. Additional outlet branch pipe 9 of fan directs air flow under screen zone 3. Fine grain pile is transported by screws 1 along-wave-shaped bottom 2 and, having reached screen zone, gets taken by combs 5 and shaken to separate grain which passes through screen zone 3 onto delivery board 7 where grain is blown out by air and fed to grain screw 13. EFFECT: enlarged operating capabilities. 2 dwg