| 摘要 |
PROBLEM TO BE SOLVED: To provide a grain separator of a thresherwhich has high selection performance and is capable of constantly supplying sufficient separation air to the front side and the back side of a grain sieve. SOLUTION: A grain separator 10 to separate a separated object is placed in a dust separation chamber 9 placed under a first threshing chamber 5 and a second threshing chamber, and the grain separator 10 is composed of a shaking sorting member 11, a winnowing fan 12, and a suction fan 13. The shaking sorting member 11 has a grain sieve 21, a partition plate 23 is placed under the grain sieve 21, and air dividing member 22 is placed at the blowing port 24 of the winnowing fan 12 in a manner that an upper blowing port 24a is wider than a lower blowing port 24b. The sorting air channel is divided by the air dividing means 22 and the partition plate 23 in a range extending from the blowing port 24 of the winnowing fan 12 to the grain sieve 21, and the separation air is sent through an upper separation air channel 25 and a lower separation air channel 26 on the front side and the back side of the grain sieve 21. COPYRIGHT: (C)2009,JPO&INPIT
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