PROBLEM TO BE SOLVED: To promote the re-classification and to improve the treating performance by dispersing a treated product fed from a fourth product-treating cylinder rearward by a blasting power to enhance the selection performance, and sending air to the treated product to be dust-sucked to a facing dust-removing fan from a waste dust-treating cylinder side.SOLUTION: A stuck product-collecting chamber (9) is installed in a position rear from a dust discharging opening (8) in a threshing chamber (3), and the fourth product-treating cylinder (11) driven and rotated coaxially to the threshing cylinder (5) is pivotally supported in the inside of the stuck product-collecting chamber (9). A waste dust-treating chamber (20) having the waste dust-treating cylinder (19) installed therein is arranged at the rear side part of the threshing chamber (3), and a waste dust fan (26) in a one-side sucking system is arranged at right or left one side facing the end terminal part of the waste dust-treating cylinder (19). An air-sending means (10) causing wind by the rotation of the fourth product-treating cylinder (11), and for compulsorily sending the air to a dust-sending route from the waste dust-treating cylinder (19) side at the rear side to the waste dust fan (26) is installed in the fourth product-treating cylinder (11).COPYRIGHT: (C)2011,JPO&INPIT【課題】4番処理胴からの処理物を後方への送風力によって分散することで選別性能を高め、排塵処理胴側から対向する排塵ファンに向かって吸塵される処理物に送風することで、再選別を促進し、処理能力の向上を図る。【解決手段】扱室(3)内における排塵口(8)よりも後方の位置にささり回収室(9)を設け、該ささり回収室(9)の内部に扱胴(5)と同一軸芯回りに駆動回転する4番処理胴(11)を軸架し、扱室(3)の後側方には排塵処理胴(19)を内装した排塵処理室(20)を配置し、排塵処理胴(19)の終端部に対向する左右一側には片側吸引方式の排塵ファン(26)を配置し、4番処理胴(11)には、該4番処理胴(11)の回転によって起風し後方の排塵処理胴(19)側から排塵ファン(26)への送塵経路中に強制送風する送風手段(10)を設ける。【選択図】 図3
