PROBLEM TO BE SOLVED: To suppress grain loss and dust intrusion while preventing discharge trouble of a threshed material in a thresher provided with a threshing part to charge whole reaped culm into a threshing chamber and thresh the culm, a dust-sending port positioned at a rear end of the threshing chamber and a dust outlet opened at a back of a machine body to discharge dust of a shaking sorter from the machine body together with separation air sent from a winnower.SOLUTION: The thresher is provided with a dust discharge adjusting body 86 to switch the thresher between a discharge restriction state by moving to a closing side of a dust transfer path 85 connected to the dust outlet 40a to restrict the dust discharge, and restriction released state by moving to an opened side of the dust transfer path 85 and release the dust discharge restriction by the dust outlet 40a, wherein the dust discharge adjusting body is positioned under the dust sending port 49 of the dust transfer path 85.COPYRIGHT: (C)2010,JPO&INPIT【課題】刈取穀稈の全体を扱室に投入して脱穀処理する脱穀部を備え、扱室の後端部に位置する送塵口および揺動選別装置からの塵埃を唐箕からの選別風と共に機体外に排出するように機体後部に設けた排塵口を備えた脱穀装置において、脱穀処理物の排出不良を発生しにくくしながら穀粒損失や塵埃混入の抑制を可能できるようにする。【解決手段】排塵口40aに連通する塵埃搬送経路85の閉じ側に移動して排塵口40aによる塵埃排出を規制した排出規制状態と、塵埃搬送経路85の開き側に移動して排塵口40aによる塵埃排出の規制を解除した規制解除状態とに切り換え自在な排塵調整体86を、塵埃搬送経路85の送塵口49の下方に位置する部位に設けてある。【選択図】図3
