| 摘要 |
<p>A drum filter (10) comprises a pair of circular disks (20 and 30) connected in coaxial relation by a plurality of axially extending disc support rods (34 and 36). A cylincrical filter media (38) is disposed between the disc support rods (34 and 36). Unfiltered liquid is admitted to the interior of the drum filter (10) and flows radially outwardly therefrom through the filter media (38). Reciprocating backwash nozzles (120) direct high pressure liquid radially inwardly against the exterior surface of the filter media (38) to backwash contaminants collected on the radially inner surface thereof into a contaminant collector (140) disposed internally of the filter drum. The filter media (38) is sealably connected to the circular disks (20 and 30) by a novel retention system.</p> |
