PROBLEM TO BE SOLVED: To improve the precision of recovering clean grains by horizontal transferring screws and to improve the efficiency of separation.SOLUTION: A threshing net (10) is arranged under a threshing cylinder (9) and the lower part of the threshing net (10) faces from the front to middle part in front and back directions of a swinging separation shelf (26). Below the swinging separation shelf (26), the following parts are arranged from the forward to backward direction in this order: the first winnower (27) blowing a separation air rear upward the first horizontal transferring screw (28) down to which processed material having leaked downward from the front part of the swinging separation shelf (26) flows, after separated by the air from the first winnower (27) the second winnower (29) which blows the separation air rear upward the second horizontal transferring screw (30) down to which processed material having leaked downward from the middle part of the swinging separation shelf (26), flows, after separated by the separation air from the second winnower (29) and the third horizontal transferring screw (31) down to which processed material having leaked downward from the back part of the swinging separation shelf (26) flows.COPYRIGHT: (C)2013,JPO&INPIT【課題】横移送螺旋による清粒の回収精度を向上させ、選別精度を高める。【解決手段】扱胴(9)の下側に扱網(10)を配置し、扱網(10)の下側に揺動選別棚(26)の前部から前後方向中間部にわたる部位を臨ませ、選別風を後側上方へ向けて送風する第1唐箕(27)と、揺動選別棚(26)の前部から漏下する処理物が第1唐箕(27)からの選別風で選別された後に流下する第1横移送螺旋(28)と、選別風を後側上方へ向けて送風する第2唐箕(29)と、揺動選別棚(26)の中間部から漏下する処理物が第2唐箕(29)からの選別風で選別された後に流下する第2横移送螺旋(30)と、揺動選別棚(26)の後部から漏下する処理物が流下する第3横移送螺旋(31)とを、揺動選別棚(26)の下方において前側から後側へこの順に配置する。【選択図】 図1
