公开(公告)号：US3568414A

公开(公告)日：1971-03-09

申请号：US3568414D

申请日：1969-06-05

Applicant: DONALDSON CO INC

Inventor： SPRIGGS JOHN R ,  MATTHYS BERNARD A

IPC: B01D29/00 ,  B01D41/04 ,  B01D46/00 ,  B01D46/24 ,  B01D46/52 ,  B01D46/04

CPC classification number: B01D46/521 ,  B01D29/21 ,  B01D29/682 ,  B01D29/74 ,  B01D41/04 ,  B01D46/0071 ,  B01D46/2411 ,  B01D2201/583

Abstract: AN ELONGATED SHAFT ADAPTED TO BE APPROXIMATELY COAXIALLY MOUNTED WITHIN A GENERALLY TUBUALR, PERMEABLE FLUID FILTER ELEMENT, SAID SHAFT HAVING RIGHT AND LEFT-HAND HELICAL CHANNELS FORMED THEREIN AND JOINED AT THE ENDS WITH GUIDE MEANS ENGAGED THEREIN FOR AXIAL RECIPROCAL MOVEMENTS ALONG SAID SHAFT UPON BEING ROTATED AROUND SAID SHAFT, A FLUID MOTOR FOR ROTATING SAID GUIDE MEANS, A NOZZLE AFFIXED TO SAID GUIDE MEANS FOR DIRECTING A JET OF FLUID IN A REVERSE DIRECTION THROUGH SAID FLUID FILTER AND FLEXIBLE CONDUIT MEANS CONNECTING SAID NOZZLE TO A SOURCE OF FLUID WHEREBY A JET OF FLUID IS MOVED IN A HELICAL PATH AROUND THE INNER SURFACE OF THE FILTER ELEMENT.