| 摘要 |
PROBLEM TO BE SOLVED: To provide a threshing device selecting a material and a second material from a receiving net in a good efficiency, especially re-selecting the second material in a good efficiency and as a whole, capable of improving the yield of cereal grains. SOLUTION: This threshing device is equipped with swinging selecting parts 5, 22 for selecting a treating material supplied through a receiving net 4 from a threshing part A and a second material-returning device 17, 18 for recovering a second material after being selected by the swinging-selecting parts 5, 22 and returning it to the swinging-selecting parts 5, 22, the swinging-selecting parts 5, 22 are partitioned to a main swinging-selecting part 5 for selecting the treating material from the receiving net 4 and a sub-swinging-selecting part 22 for selecting the returned second material, and also a winnowing machine 23 for the second material for supplying selecting wind exclusive for the secondary material to the sub-swinging-selecting part 22 is installed.
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