| 摘要 |
PROBLEM TO BE SOLVED: To constitute an air course capable of preventing whirlpool at a second fan and improving the efficiency of winnowing at the selection part of a threshing device. SOLUTION: This threshing device has the winnower arranged at the lower part of the front part of a swinging selection device provided to the threshing device, and a first conveyor, the second fan and a second conveyor horizontally installed in this order at the rear part of the winnower, and further has a sucking fan 25 for discharging dust in the machine, installed in the vicinity of the rear end part of the swinging selection device, and a first grain-flowing plate and a second grain-flowing plate arranged at the rear upper parts of the first conveyor and the second conveyor 37, respectively. Preliminary selection air 93 blown from the second fan 41 in the rear oblique upper direction is constituted of discharged air 93a to be sucked together with the waste straw, or the like, by the sucking fan 25, and returned air 93b returned to the second conveyor 37 together with a second product, or the like. COPYRIGHT: (C)2006,JPO&NCIPI
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