Closed air force type grain sorting mechanism

摘要

A grain dropping passage constituted below a husking unit (D) serves as a winnowing room (A). A winnowed grain conveyor (1) is provided as the sole conveyor below the winnowing room (A). A winnowing wind blown by a winnowing fan (F) through a blowing room (B) passes through below the winnowed grain conveyor (1) and then rises in the winnowing room (A). The grains mixed with hulls and others are winnowed in the winnowing room (A) so as to be sorted into two kinds: winnowed grains to be received by the winnowed conveyor (1), and the other including hulls to be received by a hull conveyor (2) arranged oppositely to the winnowed grain conveyor (1) with respect to the winnowing fan (F). In this manner, powerful separation can be executed by means of winnowing wind having a large amount and large speed so as to improve a winnowing ability remarkably.