Filter apparatus for separating particles from a liquid

Details Filter apparatus for separating particles from a liquid Filter apparatus for separating particles from a liquid

2008-07-29

2008-07-29

Lithgow, Thomas M (Department: 1797)

Liquid purification or separation

Diverse distinct separators

Including a filter

C210S298000, C210S387000

Reexamination Certificate

active

07404895

ABSTRACT:
A filter apparatus for separating particles from a liquid having a tank with a feed inlet, a gravitational settling zone and a filtration zone arranged downstream of the settling zone. Inside the tank are two transversely spaced-apart endless chains with transversely extending drivers fixed between the chains, the drivers and chains together forming a conveying apparatus driven by gear wheels and a drive motor. The filtration zone includes a vacuum chamber, which is formed partly by the tank and is arranged underneath the solid particle filtration apparatus. Between the unfiltered liquid region and the filtered liquid region is a filter media strip, which is pulled through the tank along a path which changes direction by the chains and drivers. Each chain has flexible metal strips that extend along the chain and over a plurality of chain links. The metal strips are fixed at one end and partially overlap. These metal strips exert a force directed toward the filter media strip, which ensures that a seal is formed between the unfiltered liquid region and the filtered liquid region in the area where the moving filter media strip changes direction.

REFERENCES:
patent: 3087620 (1963-04-01), Hirs
patent: 3091336 (1963-05-01), Hirs
patent: 4250036 (1981-02-01), Parshall
patent: 4390428 (1983-06-01), Bratten
patent: 5601729 (1997-02-01), Bratten

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