Liquid purification or separation – With repair or assembling means
Patent
1992-12-08
1995-04-11
Dawson, Robert A.
Liquid purification or separation
With repair or assembling means
21032172, 210340, 21049701, B01D 6302
Patent
active
054055288
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to filter cartridges adapted to be relatively easily replaced and more particularly, but not exclusively to filter cartridge assemblies that are adapted to be connected together by headers at each end of each cartridge assembly to form a row of filter cartridges. The rows of interconnected filter cartridge assemblies may be connected together in side by side relationship utilising manifolds to form a bank of filter cartridge assemblies.
The invention will be described with reference to hollow fibre filters but it is to be understood that the invention is not necessarily limited thereto as it may be applied to cartridges incorporating other kinds of filter media such as porous membranes in sheet form.
The invention further relates to an improved form of filter cartridge casing, an improved form of header and an improved form of manifold, all of which can work in conjunction with one another to provide an improved microporous filter assembly.
The invention particularly relates to filter assemblies composed of filter cartridge assemblies having opposed, symmetrical headers attached to either end.
The invention also particularly relates to filter assemblies which utilise headers adapted to conduct both feed and filtrate to adjacent like headers and into and out of the filter cartridge assembly to which they are connected.
In a particular form the invention specifically relates to microporous filters whose filter cartridges comprise elongate bundles of microporous, polymeric fibres wherein feed to be filtered is fed to the outside of the bundle of fibres and filtrate is extracted from the ends of the fibre lumens.
DESCRIPTION OF THE PRIOR ART
Typical prior art filter cartridges and banks are shown, for example, in International Patent Application PCT/AU87/00309 and PCT/AU90/00470. The text and drawings of the specifications which accompanied those applications are incorporated herein by cross reference.
Such hollow fibre filters typically comprise an elongate tubular cartridge enclosing a bundle of hollow fibres. At one end of the casing there is a first header which has a feed passageway therethrough and in communication with the interior of the casing and hence the exterior of the fibres. The first header also has a filtrate passageway therethrough and in communication with the open ends of the fibre lumens.
At the other end of the casing there is a second header which has a treated feed passageway therethrough and in communication with the interior of the casing and the exterior of the fibres. The second header also has a filtrate passageway and in communication with the open end of the fibres.
The passageways are formed in off-set portions of the headers that have planar end faces whereby a plurality of such cartridges may be joined together without interconnecting manifolds or pipe work to form a row of filter cartridges. A number of such rows of filter cartridges may be inter-connected in spaced parallel relation to define a bank of filter cartridges.
Other prior art known to the applicant includes U.S. Pat. No. 4,547,289 to Okano et al which discloses a filter arrangement having a removable cartridge. The arrangement disclosed in U.S. Pat. No. 4,547,289 is to be distinguished from embodiments of the present invention by the fact that it discloses only a single ended header arrangement whereby certain features to aid removal of the cartridge from the filter assembly as disclosed in respect of the present invention are not required and not disclosed.
Also known to the applicant is JP 58 143 805 to Nitto Electric Industrial K.K. This application discloses a hollow fibrous membrane bundle which is housed so as to be detachable from the filter assembly. Again, this arrangement is to be distinguished from embodiments of the present invention by virtue of the fact that the filter arrangement of JP 58 143 805 requires an integral stiffener arrangement to maintain the integrity of the filter cartridge during use. Furthermore JP 58 143 805 discloses use of headers
REFERENCES:
patent: 4201673 (1980-05-01), Kanno et al.
patent: 4239729 (1980-12-01), Hasegawa et al.
patent: 4315819 (1982-02-01), King et al.
patent: 4416305 (1983-11-01), Commette et al.
patent: 4547289 (1985-10-01), Okano et al.
patent: 4600512 (1986-07-01), Aid
patent: 4876012 (1989-10-01), Kopp et al.
patent: 5223134 (1993-06-01), Riva
Biltoft Bruce G.
Guilfoyle Philip
Selbie Michael R. L.
Wood Noel S. D.
Dawson Robert A.
Memtec Limited
Walker W. L.
LandOfFree
Modular microporous filter assemblies does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modular microporous filter assemblies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modular microporous filter assemblies will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1536431