JPS6411652A - Air selector for hulling-falling rice - Google Patents

Abstract

PURPOSE: To prevent the intrusion of abortive grain rice into the hulled rice when the abortive grain rice is not needed by associatively constituting a stop valve opening and closing the inlet part of a second receiving trough and a wind force control means of a hulled rice winnowing path and controlling the wind force control means to a wind force increasing side at the time of closing the stop valve. CONSTITUTION: A hulled rice receiving trough 7 is disposed on the lower part of the hulled rice winnowing path 4 for winnowing the hulled rice form a husking section 1. The downstream side in the flow direction of the winnowing wind of the hulled rice receiving trough 7 is provided with a second receiving trough 23. Further, the stop valve 24 capable of opening and closing the inlet part of the second receiving trough 23 is disposed. The stop valve 24 and the wind force control means 26 of the hulled rice winnowing path 4 are associatively constituted to control the wind force control means 26 to the wind force increasing side at the time of closing of the stop valve 24. Consequently, the abortive grain rice is discharged outside the machine during the winnowing of the hulled rice when the abortive grain rice is not needed and in addition, the intrusion of the aborting grain rice into the hulled rice is prevented, and the simplification of the post processing of the aborting grain rice is made possible.