公开(公告)号：US3476248A

公开(公告)日：1969-11-04

申请号：US3476248D

申请日：1968-03-01

Applicant: RENARD P ADAMS

Inventor： ADAMS RENARD P

IPC: B01D29/11 ,  B01D35/22

CPC classification number: B01D29/118 ,  B01D29/54 ,  B01D29/668 ,  B01D2201/204 ,  B01D2201/282

Abstract: 1,183,429. Filters for liquids. R. P. ADAMS CO. Inc. 6 Aug., 1968 [1 March, 1968], No. 37454/68. Heading B1D. Backwashing suction is applied to opposite ends of filter tubes 58 simultaneously by sleeves e.g. 130, 130' which can move to communicate sequentially with the filter tubes. As described, there are two sets of filter tubes 58, 60 arranged in concentric circles, in a chamber immersed in raw water which flows into the open ends of the tubes and out at 44. Pressure applied through lines 184, 194 to eductors 180, 190 induces suction in tube 80 connected to sleeves 124, 154, 124', 154' caused to rotate (when required) by motor 102. Each sleeve, e.g. 134 is sealed against the inlet port, e.g. 50, by a tube (136) sliding inside the sleeve and urged against the port by a spring (138), Fig. 4 (not shown). A spring-urged seal plate (144, 146) surrounds each sleeve and seals off the open ends of two adjacent tubes, to reduce bypassing through them. Reference has been directed by the Comptroller to Specifications 982,425 and 1,071,310.