PROBLEM TO BE SOLVED: To make the width of an outlet side of a selection air channel for supplying selection air from a fan to an oscillation selector wider than an inlet side thereof, to thereby diffuse the selection air, aiming at heightening a selection effect by diffusing widely the selection air to be hit against a separation shelf.SOLUTION: In a thresher including a selection air channel (33) for supplying selection air from a fan (30) to an oscillation selector (23), an outlet side width (D2) of the selection air channel which is far from the fan is constituted more widely than an inlet side width (D1) which is near to the fan.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】本発明は、唐箕の選別風を揺動選別装置へ供給する選別風路の出口側を入口側よりも風路幅を広くして選別風を拡散し、揺動選別棚に当てる選別風を広く拡散して選別効果を高めることを目的とする。 【解決手段】唐箕(30)の選別風を揺動選別装置(23)へ供給する選別風路(33)を備えた脱穀装置において、該選別風路の前記唐箕に近い入口側幅(D1)よりも前記唐箕から遠い出口側幅(D2)を広く構成する。【選択図】図4
