A wind dust exhaust closes for grain selection by winnowing dust remover

The utility model discloses a wind dust exhaust closes for grain selection by winnowing dust remover should close wind dust exhaust and include the dust exhaust auger that sets up along dust remover dust collection box bottom, the both ends of auger be equipped with with an auger blade matched with stiff end section of thick bamboo and a dust exhaust end section of thick bamboo, a both ends section of thick bamboo and dust collection box boxboard sealing connection form the feed zone at the middle part of dust exhaust auger, are equipped with to make the dust exhaust arrange ash mouthful on adust exhaust end section of thick bamboo, correspond the position at an auger and a dust exhaust end section of thick bamboo and be equipped with and slowly fail section, delay the pitch that the pitch of failing section auger helical blade is lighter than feed zone auger helical blade, the device can satisfy the pass wind dust exhaust special requirement of grain selection by winnowing dust remover, and when guaranteeing