PROBLEM TO BE SOLVED: To provide a threshing device which does not restrict the flow into a discharge dust treating chamber and of the object to be processed, and more decreases loss of the fourth grain.SOLUTION: A recovering drum (69b) formed on a transfer directional terminal end part side of the object to be treated of a threshing drum (69), a discharge dust treating chamber (68) pivoting a discharge dust treating drum (71) and set at the rear part side face of a threshing chamber (66), a communicating hole (101) communicating the terminal end part of the threshing chamber (66) with a starting end part of the discharge dust treating chamber (68), and an upper part partitioning plate (83) which is set near the communicating hole (101), has a planar part in the direction almost perpendicular to the axial center of the threshing drum (69), has a nonuniform circumferential clearance to the threshing drum (69) and set at the ceiling part inner wall surface of the threshing chamber (66), and is equipped with a dust transfer space (A) passing the object, carried by rotation of the threshing drum (69), to the rear side at a position of the upper side of the communicating hole (101), are equipped.COPYRIGHT: (C)2009,JPO&INPIT【課題】被処理物の排塵処理室への流れを制限せず、一層の四番穀粒のロス低減が図れる脱穀装置を提供すること。【解決手段】 扱胴(69)の被処理物の搬送方向終端部側に形成した回収胴(69b)と、排塵処理胴(71)を軸架し、扱室(66)の後部側方に設けた排塵処理室(68)と、扱室(66)の終端部と排塵処理室(68)の始端部とを連通する連通口(101)と、該連通口(101)近傍に設け、扱胴(69)の軸芯と略直交する方向に平面部を有し、扱室(66)の天井部内壁面に設けられ扱胴(69)との間に円周方向に不均一な隙間を有し、前記連通口(101)の上方の位置で扱胴(69)の回転によって持ち廻る被処理物を後方側へ通過させる送塵スペース(ロ)を設けた上部仕切板(83)とを備えた。【選択図】図6
