Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Patent
1977-11-03
1979-01-09
Sever, Frank
Liquid purification or separation
Filter
Supported, shaped or superimposed formed mediums
210360R, B01D 2910
Patent
active
041337700
ABSTRACT:
A screen for a centrifuge basket is comprised of a frusto-conical sheet consisting of several sectors defining a multiplicity of apertures. The disposition of the apertures is the same for all screen sheet sectors. The screen sheet is divided into successive zones defined by concentric circles extending in planes parallel to the large and small bases of the frusto-conical sheet, and the apertures in the successive zones differ from each other. The apertures in the first zone adjacent the small base are round holes defining a small percentage of apertured area in the first zone. The apertures in the succeeding zones are slits inclined with respect to a generatrix of the respective sector. The angle of inclination of the slits grows from zone to zone towards the large base and all the slits in the same zone and sector have the same inclination.
REFERENCES:
patent: 3507394 (1970-04-01), Moore
patent: 3552575 (1971-01-01), Hultsch
Fives-Cail Babcock
Kelman Kurt
Sever Frank
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