Liquid purification or separation – Flow – fluid pressure or material level – responsive – Filter cleaning
Patent
1977-05-06
1978-05-23
Adee, John
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Filter cleaning
210132, 210138, 210333R, B01D 2938
Patent
active
040909620
ABSTRACT:
A reverse flushing device has a housing with an inlet, an outlet and a first filter to receive the flow therebetween with means in the housing to divert flow through the first filter. A second filter, positioned upstream of the first filter, has an internal apertured housing with a movable apertured slide operable thereon to provide a closure to the second filter during flow through the first filter. The housing has a discharge aperture with a movable shut off element. The diverting means and tubular slide are responsive to opening of the shut off element whereby the former diverts flow through the first filter and the tubular slide aligns with the second filter housing to permit flow therethrough and into the tubular slide extension to reverse flush the particles on the first filter into the discharge aperture.
REFERENCES:
patent: 2220706 (1940-11-01), Cantin
patent: 3282428 (1966-11-01), Rosaen
patent: 3994810 (1976-11-01), Schaeffer
patent: 4046692 (1977-09-01), Braukmann et al.
Adee John
Braukmann Armaturen A.G.
Howell William T.
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