| 摘要 |
PROBLEM TO BE SOLVED: To solve problem that sufficient separation performance has not been expected, as sufficient treatment performance has not been expected in a conventional waste dust-processing drum installed on one side of a threshing drum caused by a short length of the waste dust-processing drum, and, in a conventional locking separation shelf, caused by difficulty for bringing the length of a sieve to be long. SOLUTION: A waste dust-processing chamber having the waste dust- processing drum is constituted and installed to be ranging from one side of the terminal of a threshing chamber toward the backward position. The threshing chamber has the threshing drum supported by a shaft in its inside. The waste dust-processing drum reprocesses the waste dust by receiving the discharged waste dust from a dust discharge port on the terminal of the threshing chamber and carrying the waste dust backward. The waste dust- processing drum is constituted to have the longitudinal length longer than that of the threshing drum.
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