Liquid purification or separation – Processes – Separating
Patent
1991-07-30
1993-05-04
Dawson, Robert A.
Liquid purification or separation
Processes
Separating
210350, 210354, 210356, 210483, 2104971, 210767, B01D 2962, B01D 2948
Patent
active
052079309
ABSTRACT:
A filtration system utilizing a helical cartridge wherein the differential in pressure between the pressure inside and the pressure outside of the helix is effective in controlling the spacing between the coils of the helix. Each coil of the helix is provided with radial grooves of predetermined size corresponding to the smallest particle size to be trapped by the cartridge and prevented from entering the interior of the helix. The coils are maintained closed during the filtering cycle and are opened during the backwash cycle.
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Crane Company
Dawson Robert A.
Kim Sun Uk
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