| 摘要 |
PROBLEM TO BE SOLVED: To carry out separation having further higher precision in a threshing apparatus equipped with a separation part with which a threshed material leaked from a receiving net is sieved and separated while being shaken and transported backward by a sieve case and separation air from a winnower is supplied in the backward direction to the separation part to carry out winnowing. SOLUTION: An air velocity sensor 43 is installed in a space S for winnowing formed below a grain sieve 29 for fine separation. The air velocity sensor 43 is connected to a separation air flow control means so that when an excessively high wind velocity is detected, the separation air flow from the winnower 15 is reduced and controlled and when the excessively low wind velocity is detected, the separation air flow from the winnower 15 is increased and controlled. COPYRIGHT: (C)2004,JPO
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