| 摘要 |
PCT No. PCT/GB91/00069 Sec. 371 Date Aug. 24, 1992 Sec. 102(e) Date Aug. 24, 1992 PCT Filed Jan. 17, 1991 PCT Pub. No. WO91/10611 PCT Pub. Date Jul. 25, 1991.An air distribution plate for incorporation into a material conveyor or a material separator has a plurality of apertured zones alternately arranged along the length of the plate. The apertures in the first series of zones are inclined in the direction of the desired flow of material in the case of the conveyor and in the direction of the desired air flow in the case of the separator and the apertures in the second series of zones incline in the opposite direction by the same amount. Each zone in the second series of zones has fewer apertures than the zones of the first series of zones.
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