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US 4,289,630 AGranted
Filter cake removal method and apparatus
AssigneeIndustrial Filter & Pump Mfg. Co.
InventorsHenry Schmidt, Jr., Allen E. Cederholm, James F. Zievers
Life of this patent
Estimating the term…
Abstract
The exhaust manifold in a pressure filter is spring mounted and vibrated along a vertical axis to dislodge filter cakes from filter tubes suspended from the manifold.
Claims15
A filter, comprising in combination
- a filter tank enclosing a filter chamber,
- a liquid inlet opening into said tank through which a filtrate may be introduced into said chamber,
- a rigid, generally planar tubular header manifold having a passageway therein,
- spring means supporting said manifold in said chamber,
- an effluent outlet from said tank,
- conduit means connecting said passageway to said outlet, a plurality of filter elements each having a perforate filter media overlying an internal cavity therein,
- said filter elements being fixedly mounted at one end to said header with said cavities being in communication with said passageway,
- said filter elements being in mutually parallel relationship, the outer surfaces of said filter media extending in a direction perpendicular to the plane of said header manifold and
- vibratory impactor means connected to said manifold for impacting said manifold in a direction parallel to the outer surface of said filter media.
6 more elements
A method of removing a filter cake from the surface of a filter element mounted in a filter tank on a rigid outlet manifold, comprising the steps of
- mounting said manifold in said tank on springs to permit movement of said manifold relative to said tank, and
- repeatedly impacting said manifold in a direction parallel to said surface of said filter element to exert a shear force between said filter element and said cake to separate said cake from said filter element.
A filter, comprising
- a sealable filter tank enclosing a filter chamber,
- a liquid inlet to said tank,
- an outlet manifold disposed in said tank,
- said outlet having a passageway therein,
- a plurality of filter elements each having a cavity therein at least partially enclosed by perforate means,
- said filter elements being disposed below said outlet manifold with said cavities being in communication with said passageway in said outlet manifold,
- a liquid outlet from said tank located below the bottom of said manifold, and
- conduit means connecting said liquid outlet to the bottom of said manifold.
5 more elements
Dependencies are inferred from the claim text.