| 摘要 |
2093342 9205881 PCTABS00011 A bar screen (10) for sizing wood chips which includes a plurality of parallel bars (12-12) supported at their respective ends (14, 16) in such a manner and driven in such a manner that each bar moves both longitudinally and vertically. Two alternating sets of bars are included, one set being 180· removed in position relative to the other set. Each set of bars alternate between relatively high and low vertical positions. When each set is in its relatively high position, the bars are moving longitudinally toward the infeed end of the bar screen (10). The bar screen (10) is inclined downwardly from the infeed end to outfeed end at an angle of approximately 15·.
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