| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to return grains to the inside of a threshing machine body, by highly precisely sorting a second treated material received from a sorting part into the grains and dust, and to make it easy to avoid discharge of the grains together with the dust. SOLUTION: In the subject thresher, a lift conveyor 23 communicates with an upper side space of the machine body of a discharge outlet 42 of an intermediate treatment case 40 which is joined to an end part of transportation from a second conveyor 22, and further a dust discharge case 50 communicates with a lower side space of the machine body. The intermediate treatment case 40 releases the treated material received from the second conveyor 22 through the discharge outlet 42 by a release rotary body 43, and then supplies the lift conveyor 23 and the dust discharge case 50 with the treated material. The lift conveyor 23 returns the grains received from the intermediate treatment case 40 to the inside of the threshing machine body. The dust discharge case 50 discharges the dust received from the intermediate treatment case 40 through a dust discharge outlet 53. The grains which have entered in the dust discharge case 50 are subjected to gravity selection with a selection part 56 to be separated from the dust, and then returned to the intermediate treatment case 40 from the dust discharge case 50 by a rotary body 57. COPYRIGHT: (C)2006,JPO&NCIPI
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