| 摘要 |
PROBLEM TO BE SOLVED: To provide a wind-force sorting device capable of keeping the efficiency of sorting particulate matter and minimizing the damage of its sorting screen. SOLUTION: The wind-force sorting device wherein particulate matter 2 being fed from upstream side to down stream side by wind force is sorted midway by a sorting screen 22 according to its particle size and the particulate matter 2 sticking to the mesh of the sorting screen 22 is caused to fall off by blowing screen-cleaning air 12 to it from an air ejector disposed downstream of the sorting screen 22, is equipped with a screen 21 having a mesh larger than the sorting screen 22 disposed upstream of the sorting screen 22 at a short distance apart so as not to be touched by the sorting screen 22 bent by the screen-cleaning air 12 blown to it from the air ejector. COPYRIGHT: (C)2007,JPO&INPIT
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