초록 ▼

[A porous support core is prepared from a synthetic polymeric material, which support core is adapted for use with disposable semirigid filter tubes, which core comprises a plurality of individual elements arranged in a stacked interlocking relationship, the elements so structured to form an axial p

[A porous support core is prepared from a synthetic polymeric material, which support core is adapted for use with disposable semirigid filter tubes, which core comprises a plurality of individual elements arranged in a stacked interlocking relationship, the elements so structured to form an axial passageway in the stacke elements and flow passages in the wall of the core so formed. The individual disc elements are characterized by a central aperture to form an axial passageway, projecting partitions on one surface to form the flow passage and hook elements on the opposite surface to interlock individual disc elements.] A cartridge filter and a method of sealing a filter tube in said cartridge filter, the cartridge comprising a semirigid cylindrical porous filter tube composed of a plurality of overlapping nonwoven silicate glass fibers having interstices therebetween, the fibers containing a hardened material at the fiber crossovers, the fibers at the region about the edge of each end of the tube adapted to be compressed together into a self-sealing relation on the application of an axial force, and a pair of end flanges, the facing surface of the end flanges compressing the fibers at the end of the filter tube to provide a peripheral fluid-tight seal between the facing surface and the body of the filter tube.

대표청구항 ▼

A cartridge filter, which filter comprises in combination: a. a rigid, cylindrical, porous support core characterized by an axial flow passage therethrough, and further characterized by a plurality of flow passages on the cylindrical wall of the core, which flow passages provide communication betwee

A cartridge filter, which filter comprises in combination: a. a rigid, cylindrical, porous support core characterized by an axial flow passage therethrough, and further characterized by a plurality of flow passages on the cylindrical wall of the core, which flow passages provide communication between the axial flow passage and the outer wall of the support core; b. a semirigid, cylindrical, unitary, porous, filter tube, the tube composed of a plurality of overlapping nonwoven fibers having an average diameter of from about 0.001 to 10.0 microns, the fibers having interstices [thprebetween]therebetween to define the porosity of the tube, the fibers containing at the junctions of the fiber crossovers a hardened material to provide a semirigid, self-supporting structure throughout the body of the filter tube, the filter tube disposed in a close-fitting relationship surrounding the support core, the fibers at the peripheral edge of each end of the filter tube adapted to be compressed together into a sealing relationship upon the application of an axial force; and c. end elements positioned at each end of the support core, the elements having outwardly extending flanges thereon extending outwardly from the external surface of the core at least the thickness of the filter tube, the flanges each having a facing surface which [abutts]abuts each edge of the ends of the filter tube, at least one of which end elements is adjusted in relationship with the support core for axial movement in relationship to the support core, and at least one of each end elements is adapted to be removed from the support core to permit the removal and replacement of a filter tube on the support tube, the fibers across the entire edge width of the filter tube and adjacent each facing surface compressed about the periphery by axial force due to the axial movement and position of the end elements, the fibers compressed together by being forced against the facing surface of each flange in the immediate peripheral region adjacent to the facing surface of each flange to provide a peripheral fluid-tight seal between the facing surfaces, and the body of the filter tube. A cartridge filter, which filter comprises in combination: a. a semirigid, cylindrical, porous filter tube, the tube composed of a plurality of overlapping nonwoven fibers having an average diameter of from about 0.001 to 10.0 microns, the fibers having interstices therebetween to define the porosity of the tube, the fibers containing at the junctions of the fiber crossovers a hardened material to provide a semirigid, self-supporting structure throughout the body of the filter tube, the fibers at the peripheral edge of each end of the filter tube adapted to be compressed together into a sealing relationship upon the application of an axial force; b. elements positioned at each end of the filter tube, the elements having flanges extending outwardly at least the thickness of the filter tube, at least one of said elements characterized by an aperture therein to permit a fluid to be introduced into or withdrawn from the interior of the filter tube, the flanges each having a facing surface which abuts each edge of the ends of the filter tube, at least one of which end elements is adjustable for axial movement in relationship to the filter tube, and at least one of each end elements is adapted to be removed to permit the removal and replacement of the filter tube, the fibers across the entire edge width of the filter tube and adjacent each facing surface compressible about the periphery by axial force due to the axial movement and position of the end elements, the fibers compressible together by being forced against the facing surface of each flange in the immediate peripheral region adjacent to the facing surface of each flange to provide a peripheral fluid-tight seal between the facing surfaces and the body of the filter tube; and c. means to move axially at least one of the end elements in relationship to at least one end of the filter tube, whereby an axial force may be applied to compress the fibers together into a fluid-tight seal to the end element.