Liquid purification or separation – Processes – Separating
Patent
1984-12-11
1986-06-03
Spitzer, Robert
Liquid purification or separation
Processes
Separating
210108, 210354, 210412, 210423, 210426, B01D 2906, B01D 2938
Patent
active
045928487
ABSTRACT:
A flow-through filter including a two-stage valve head assembly and a filtering body which is designed to provide a helical flow path for the solution over a cylindrical porous filter which captures the particulate matter contained by the solution being filtered. An extended filtering capacity is achieved due to the ability of the filter to remove and eject separated solids retained by the porous filter. An expander tube is positioned within the filter and, when connected to a pressure source, the expander tube forces solids from the pores and into the primary volume of the filter where a flushing medium is circulated. The filter clearing is made possible by an accurately controlled and metered volume of uniformly distributed reverse flow which effectively lifts the solid material out of the pores.
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Bevilacqua Michael J.
Pabst Patrea L.
Spitzer Robert
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