The invention relates to a threshing device, which is provided with function of recovering grain via entering into threshing and discharge of straw, and capable of freely adjusting air feed amount and air feed direction of screen air, thereby improving screening precision, efficiency of threshing operation, and efficiency of grain recovery. A separating plate (11K) is closely configured at the outer periphery of the rear part of a processing cylinder (10) in a threshing chamber (11), separating teeth (10b) are formed at the outer circumferential surface of the processing cylinder (10) in a recovery chamber (11F) at the rear side of the separating plate (11K) and disposed to separate grain via entering into threshing and discharge of straw from straw, and a supporting part (10c) is formed at a part along the lower side outer periphery of the processing cylinder (10) in the recovery chamber (11F) and disposed to support the discharged straw after threshing and guiding the straw to an acting zone of the separating teeth (10b). Additionally, air feed direction of screen air from a winnower is in an upper-lower free adjustment.藉由具備將進入脫穀後之排桿之穀粒回收之機能且可自由調節選別風之送風量與送風方向，提高選別精度、脫穀作業效率、穀粒回收率。於前述脫穀室(11)內之脫粒滾筒(10)之後部外周近接配置分隔板(11K)，於形成於分隔板(11K)後側之回收室(11F)內之脫粒滾筒(10)外周面上設有將進入脫穀後之排桿之穀粒從該排桿分離之分離齒(10b)，於沿回收室(11F)內之脫粒滾筒(10)下側外周之部位設有支持脫穀後之排桿並導向分離齒(10b)之作用區域之支持構件(10c)。此外，將來自風鼓(16)之選別風之送風方向於上下自由調節。
