Disposable media filter
AssigneeFramatome Technologies, Inc.
InventorGlenn R. Wertz, II
Life of this patent
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Abstract
A filter for a filter vessel which converts the filter vessel to use disposable filters for removing hazardous particulate matter from an aqueous flow. The filter includes a rigid support housing having an input passage for the aqueous flow, an exit passage for the aqueous flow, an internal sealing surface and a locking seal located adjacent to the input passage to securingly engage the filter vessel for the aqueous flow. The invention also includes a sleeveless disposable filter cartridge. The cartridge includes a flexible filtering medium having first and second ends. A terminal seal is affixed to the first end of the filtering medium for sealing engagement with the filter vessel and a wall seal on the second end of the filtering medium for engagement with the internal sealing surface of the support housing.
Claims41
A filter for use with a filter vessel for removing particulate matter from an aqueous flow, said filter comprising:
- (a) a rigid support housing comprising:
- a base plate for surrounding a filter vessel input passage for the aqueous flow;
- a groove on an inside surface of said base plate having a locking seal for securingly engaging said filter vessel input passage;
- a sidewall including an exit passage for the aqueous flow;
- and, an annular seal cavity having an internal sealing surface for receiving a sleeveless disposable filter cartridge;
- and,
- (b) a sleeveless disposable filter cartridge sized to be substantially entirely received within said housing, said cartridge having a filter medium that extends across a path from said input passage to said exit passage when received in said housing, said cartridge having a terminal seal affixed to one end of said filtering medium for sealing engagement with said filter vessel, said cartridge also having an annular wall seal located on a second end of said filtering medium, said annular wall seal having an outer sealing surface sized to create a compression fit against said internal sealing surface when said cartridge sealingly engages with said internal sealing surface of said housing;
- wherein, said support housing may be installed in said filter vessel for an extended period and held in place by said locking seal, and repeatedly during said extended period, said cartridge may be installed within said support housing to seal said cartridge to said filter vessel and said housing, aqueous flow may be directed through said filter medium, and said cartridge may be removed and discarded.
A filter for use with a filter vessel for removing particulate matter from an aqueous flow, said filter comprising:
- (a) a rigid support housing comprising:
- a base plate for surrounding an filter vessel input passage for the aqueous flow;
- a groove on an inside surface of said base plate having a locking seal for securingly engaging said filter vessel input passage;
- a sidewall including an exit passage for the aqueous flow;
- and, an annular seal cavity having an internal sealing surface for receiving a sleeveless disposable filter cartridge;
- and
- (b) a sleeveless disposable filter cartridge, said cartridge including:
- (i) a flexible filtering medium having first and second ends;
- (ii) a terminal seal affixed to said first end of said filtering medium for sealing engagement with said filter vessel;
- and, (iii) an annular wall seal having an outer sealing surface on said second end of said filtering medium, said filtering medium sized to be substantially entirely received within said support housing and to sealingly engage said internal sealing surface in said support housing with said wall seal outer sealing surface and said filter medium extends across a path from the input passage to the exit passage of said support housing when said terminal seal engages with said filter vessel;
- and
- (c) a lifting point formed in said cartridge adjacent to said terminal seal;
- wherein, said support housing may be installed in said filter vessel for an extended period and held in place by said locking seal, and repeatedly during said extended period, said cartridge may be installed within said support housing to seal said cartridge to said filter vessel and said housing, aqueous flow may be directed through said filter medium, and said cartridge may be removed and discarded.
Dependencies are inferred from the claim text.