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摘要

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