Liquid purification or separation – With repair or assembling means
Patent
1985-11-22
1987-12-01
Fisher, Richard V.
Liquid purification or separation
With repair or assembling means
210324, 210331, 210347, 210486, 210488, B01D 3326
Patent
active
047102942
ABSTRACT:
A rotary disk filter element for a beverage filter for biological filtration. The filter element includes a closed base plate that is in the form of a ring-like member and on which is supported a filter fabric, with a support fabric being interposed between the base plate and the filter fabric. The filter fabric is secured to the base plate between an outwardly disposed retaining member and an inwardly disposed collar member. The collar member is provided with a supply opening for a wash fluid, especially a water/air mixture that is flushed through the filter fabric, counter to the direction of filtration, for removing filter residue for the general cleaning of the filter fabric. The filter fabric is secured to the base plate and to the support fabric at a plurality of point locations. This divides the free support or clamping lengths of the filter fabric into a number of relatively short regions that prevent the filter fabric from being overstretched and bulged during flushing. The formation of folds and damage to the filter fabric is thus prevented.
REFERENCES:
patent: 1699680 (1929-01-01), Sweetland
patent: 2925367 (1960-02-01), Soelberg
patent: 2946447 (1960-07-01), Welz
patent: 3228524 (1966-01-01), Richards
patent: 3471026 (1969-10-01), Riker
patent: 4297211 (1981-10-01), Hiesinger et al.
patent: 4592838 (1986-06-01), Christophe et al.
Fisher Richard V.
Millard Wanda L.
Schenk Filterbau Gesellschaft mit beschrankter Haftung
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