| 摘要 |
<P>PROBLEM TO BE SOLVED: To adjust blow quantity as well as blow direction in an upper blow passage and a lower blow passage to maintain high sorting performance. <P>SOLUTION: On a blow port (65) composed between a top surface part (67) and a bottom surface part (68) of a winnow (16), a wind crack (66) is provided between the top surface part (67) and the bottom surface part (68) to part the blow port (65) into the upper blow passage (74) and the lower blow passage (75). The top surface part (67) is turnably composed to move the downstream side up and down. The wind crack (66) is turnably composed to move the upstream side and the downstream side up and down, having the turning center in the middle in the blow direction. The top surface part (67) and the wind crack (66) are interlocked to turn in the same rotation direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
