| 摘要 |
<p>Apparatus for withdrawing particulate adsorptive material from a rechargeable filter includes a well having an exhaust and return conduits coupled to a pneumatic conveyor system. The lower end of the filter has a downspout projecting into the well and adjacently spaced from the floor thereof whereby the granular material falling upon the floor through the spout causes clogging thereof as the angle of repose of the pile of granules reaches the end of the spout. The pneumatic conveyor sweeps the pile away to permit additional granules to fall.</p> |
