PROBLEM TO BE SOLVED: To solve the problem in which a processed product is caught on the outer periphery of a second spiral and prevented from entering the inside of the second spiral.SOLUTION: A threshing device comprises: a blower fan for sorting a processed product that has fallen from a threshing chamber by a sorting wind a first spiral for conveying grains sorted by the sorting wind and a second spiral 55 disposed on a blow direction downstream of the blower fan from the first spiral. The second spiral 55 comprises a rotary shaft 67 and a conveyance plate 69 having a cut-off part 70 in which a spiral blade formed spirally on the outer periphery of the rotary shaft 67 is partially cut off. The processed product falling from the upper side of the second spiral 55 enters the inside of the second spiral 55 from the cut-off part 70. The processed product inside the conveyance plate 69 is processed into single grains by a projection 71 provided in the rotary shaft 67 so as to avoid the cut-off part 70.COPYRIGHT: (C)2016,JPO&INPIT【課題】2番ラセンの外周に処理物が引っかかって、2番ラセンの内方に該処理物が入り込まない場合がある。【解決手段】扱室から落下した処理物を選別風によって選別する送風ファンと、該選別風によって選別された穀粒を搬送する1番ラセンと、該1番ラセンより送風ファンの送風方向下流に配置される2番ラセン55と、を備える。該2番ラセン55は、回転軸67と、該回転軸67の外周に螺旋状に形成されるラセン羽根を部分的に切除した切除部70を有する搬送板69と、を有する。2番ラセン55の上方から落下してくる処理物は、切除部70から2番ラセン55の内方に入り込む。搬送板69の内方にある処理物は、切除部70を避けて回転軸67に設けられた突出部71によって単粒化処理される。【選択図】図11
