| 摘要 |
<p>A number of perforated pipes (8) lead from each liquid distributor (6). The cross sectional areas of the pipe inlets are varied according to their position, the side pipes having a larger opening than those opposite the liquid inlet. The perforations are positioned lower down the sides of the pipes further away from the distributor. A flow divider (3) can be used to stop flow to one part of the filter.</p> |
