| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that in the case of a rice kind that generates a large amount of waste straw or in the case where the stalk culms are wet, the grain loss and husking increase and the problem that the sorting efficiency is reduced as the layer of the processed product accumulates thick and slants on the swinging sorting shelf set on the side to which the second material returning opening is provided, thus the sorting efficiency is decreased. SOLUTION: The winnowing chamber 13 is set downward in the threshing net 10 of the threshing chamber 6, the swinging screening equipment 15 is set to the winnowing chamber 13, the first conveyer 37 and the second conveyer 38 are set under the swinging screening shelf 14 of the swinging screening device 15, the base part of the second returning device 21 is connected to the terminal end of the second conveyer 38, the second returning device 21 forms the conveying cylinder 46 having a conveying screw 47 built inside, the inlet 50 of the second returning device is opened so that the second returned material conveyed to the upper part of the conveying cylinder 46 may be returned to the swinging screening shelf 14, wherein the second returning opening is arranged more upper than that of the central axis of the threshing cylinder 5. COPYRIGHT: (C)2006,JPO&NCIPI
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