公开(公告)号：US3703465A

公开(公告)日：1972-11-21

申请号：US3703465D

申请日：1970-12-14

Applicant: DOVER CORP

Inventor： REECE THOMAS L ,  BRYANT THURMAN E

IPC: B01D29/11 ,  B01D35/12 ,  B01D29/38

CPC classification number: B01D29/114 ,  B01D29/52 ,  B01D29/606 ,  B01D29/668 ,  B01D29/925 ,  B01D2201/0453

Abstract: A filter assembly having a plurality of individual filter units, each including an impervious outer skirt surrounding an elongated filter member. A fluid-solid mixture is supplied to the filter units in a direction to flow radially inwardly through the filter member. Rotatable backwash arms are disposed adjacent the opposite ends of the filter units for sequentially and progressively permitting backwashing thereof. Tne backwash fluid flows radially outwardly through the filter members for removing the collected solid material. The backwash arms are connected to inlet and outlet pipes, with the inlet pipe being connected to an external source of separate backwash fluid. The backwash arms are rotatably driven by means of external drive system which includes disconnectible means for enabling one end of the filter housing to swingable move into an open position, carrying with it the backwash arm connected thereto, for permitting servicing of the individual filter units.