Multi-stage fluid filter

Details Multi-stage fluid filter Multi-stage fluid filter

1991-08-27

1994-03-29

Dawson, Robert A.

Liquid purification or separation

Filter

With flow controller for material being treated

210420, 210422, 210424, B01D 3512

Patent

active

052981622

ABSTRACT:
A multi-stage fluid filter filters entrained particulate matter from a moving fluid stream at substantially constant fluid pressure and filtration efficiency during continuous on-line operation. The filter includes a housing having a fluid inlet and a fluid outlet, first and second stationary filtration elements positioned in the housing, each having a filtration medium therein from an upstream side to a downstream side thereof. The two elements are positioned in series for fluid flow from the downstream side of one of the two elements defined as a first filter stage for accumulating particulate matter on the filtration medium thereof to the upstream side of the other of the two elements defined as a second filter stage having a previously accumulated layer of particulate matter on the filtration medium thereof. A structure is provided for selectably alternating the first and second filter elements to the first and second stage positions to, after cleaning particulate matter from the filter medium in the cleaning stage and, upon an increase in resistance to fluid flow through the second filter stage caused by an increase in thickness and/or density in the layer of particulate matter, redefine the one of the filter elements as the first filter stage, and the other of the filter elements as the second filter stage successively to permit the filter to operate continuously after a filter layer is accumulated on the filter medium in the first filter stage.

REFERENCES:
patent: 1950983 (1934-03-01), Hennebohle
patent: 3157131 (1964-11-01), Brydon
patent: 3789992 (1974-02-01), Treplin et al.
patent: 3828930 (1974-08-01), Einer et al.
patent: 4311591 (1982-01-01), Einer et al.
patent: 4565631 (1986-01-01), Bitzer et al.
patent: 4880608 (1989-11-01), Stelman

Affiliated with

Also associated with

Rating

Multi-stage fluid filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-stage fluid filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-stage fluid filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-789288