Patent ID: 7299929

Claim:
A closed air force type grain sorting mechanism comprising: a grain dropping passage constituted below a husking unit, said grain dropping passage serving as a winnowing room; a winnowing fan blowing a winnowing wind into the winnowing room so as to winnow grains dropped from said husking unit; a plurality of winnowing wind guide plates provided in said winnowing room, wherein the plurality of winnowing wind guide plates are constituted in a triangular shape in a sectional viewing and arranged so as to collide with said grains dropped after husking; a winnowed grain conveyor positioned below the winnowing room; a wind direction adjusting plate constituted in a triangular shape; a grain-flow plate provided in between the wind direction adjusting plate and the winnowed grain conveyor; a plate provided in the winnowing room configured to deflect winnowing wind toward the grain-flow plate; and a hull conveyor positioned in a reverse side of the winnowing room with respect to said winnowing fan, wherein said winnowed grain conveyor serves as the sole conveyor positioned below said winnowing room so that the grains mixed with hulls and others falling in said winnowing room from said husking unit are sorted into two kinds, winnowed grains to be received by the winnowed grain conveyor, and the other including hulls to be received by the hull conveyor.