EP0876185A1 - Cartouche de filtre et procede - Google Patents

Cartouche de filtre et procede

Info

Publication number
EP0876185A1
EP0876185A1 EP96939751A EP96939751A EP0876185A1 EP 0876185 A1 EP0876185 A1 EP 0876185A1 EP 96939751 A EP96939751 A EP 96939751A EP 96939751 A EP96939751 A EP 96939751A EP 0876185 A1 EP0876185 A1 EP 0876185A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
filter
filter element
housing
centre
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96939751A
Other languages
German (de)
English (en)
Other versions
EP0876185A4 (fr
Inventor
Paul Charles Lindberg
Kenneth Gordon Mortensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Filter Technology International Pty Ltd
Original Assignee
Filter Technology International Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AUPN6816A external-priority patent/AUPN681695A0/en
Priority claimed from AUPN9731A external-priority patent/AUPN973196A0/en
Application filed by Filter Technology International Pty Ltd filed Critical Filter Technology International Pty Ltd
Publication of EP0876185A1 publication Critical patent/EP0876185A1/fr
Publication of EP0876185A4 publication Critical patent/EP0876185A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/012—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/08—Construction of the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B01D29/07—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets
    • B01D29/072—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets ring shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B01D29/07—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets
    • B01D29/073—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets with wound filtering sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions

Definitions

  • a FILTER CARTRIDGE AND METHOD TECHNICAL FIELD OF THE INVENTION
  • a filter cartridge and in particular but not limited to a recyclable filter cartridge manufactured from reinforced plastic material using a moulding technique.
  • filtration of fuel or oil on board a vehicle involves the use of a flexible filter media housed within a disposable metal can.
  • a flexible filter media housed within a disposable metal can.
  • the user simply replaces the whole can so that the can and filter media are disposed of together.
  • the disposable metal can method As effective filtration is achieved by making sure the filtrant properly passes through the filter the disposable metal can method is more efficient as the filter element can be placed very tightly within the can under controlled manufacturing conditions. Due to the controlled manufacturing conditions there is little risk of incorrect installation as the geometry of the can and the housing in which the can fits is defined.
  • Present manufacturing techniques involve the insertion of the filter element into the can.
  • the filter element is compressed and upon the application of a press forced into the can. This causes distortion of the filter element in order to obtain the tight fit within the can.
  • the prospect of the can being reused has been proposed by the applicant but this has proved fruitless due to distortion of the can when efforts are made to remove the spent filter element from the can and insert a new filter element into the can.
  • the applicant has carried out experiments with a view to reusing the existing cans but has found the results unsatisfactory due to this distortion of the can.
  • the present invention also solves problems of can failure known in the existing metal can under certain circumstances. For example, in cold climates at start up the thick oil causes a substantial pressure differential across the can and the can is prone to collapse.
  • the metal can is made as a single unit but must include separate spacer means to maintain the filter element away from the can base otherwise the can can become clogged disrupting flow.
  • a method for recycling a filter cartridge comprising the steps of (i) Providing a recyclable filter cartridge; (I I) Inserting a filter element into the cartridge;
  • the invention resides in a filter cartridge being adapted to receive a filter element under compression to form a tight fit between the cartridge and the element, the cartridge being hollow and having a side wall that is sufficiently rigid for multiple use involving repeated insertion and removal of filter elements from the cartridge.
  • the cartridge can be made from any material that enables reusability without distortion of the cartridge.
  • a moulded carbon fibre reinforced cartridge is employed.
  • the cartridge preferably is of integral one piece construction the side wall having an inside surface and there being an inner transverse wall, the inner wall including a filter element support grid allowing flow of filtrate across the inner wall of the cartridge through the support grid while at the same time providing fairly uniform support for the filter element across the inner wall of the cartridge
  • the inner wall of the can is typically thicker than the side wall to inhibit distortion of the inner wall.
  • the carbon fibre reinforced plastics used in the moulding process is preferably made up of 60% "Maranyl” nylon produced by Dupont reinforced with glass fibre, to 40%, the nylon melt moulding during an injection moulding process
  • the cartridge is typically injection moulded at a mould temperature of 90°C-120°C at fast speed to ensure mould fill and to reduce stress in the completed cartridge.
  • a drying time of 3-4 hours at 85°C is typical
  • Other suitable moulding formulations could be used but should be able to operate without severe deformation at oil temperatures, so a formulation melt temperature of 260°C is preferred so this provides a margin above normal oil temperature which can usually rise to 200°C or marginally thereabove.
  • the cartridge holds a filter element for a filter, the cartridge including: an open end forming an inlet for the filter element, a side wall and a second end opposite to the open end of the cartridge; at least one filter element within the cartridge disposed about a centre tube defining an outflow passage for filtrate so arranged that: a feedstock to be filtered will pass through the inlet to the or each filter element, and the filtered feedstock or filtrate will pass through a cross flow passage into the outflow passage surrounded by the centre tube; the or each filter element being wound onto the centre tube in sealing engagement with the centre tube and the side wall of the cartridge; the feedstock passes substantially axially through the filter medium to the cross flow passage; and wherein the or each filter medium comprising a non biodegradable material
  • the non biodegradable material of each filter medium is a facial quality tissue paper. More preferably the tissue paper is made from virgin pulp As virgin pulp has not been treated with colouring the problem of colour contamination in oil is avoided.
  • the tissue paper may be selected from a range of grades depending on required softness and thickness.
  • paper softness is a contributing factor to filter efficiency. The reason is that contaminants in oil or fuel stick to softer tissue better. Filters with softer tissues as filter media will therefore retain or trap more contaminants and give a more efficient cleaning effect. In addition softer tissues allow more layers of the tissues in a given space than harder tissues. This quality also improves the cleaning effect.
  • tissue paper for each filter element is to be machine wound the paper tissue must be able to withstand the tension during winding and thereby allows the filter medium to be tightly wound without tearing.
  • GSM grams per square meter
  • Tissue paper supplied by Carter Holt Harvey and having a product code number of 5799 10/20 2 ply is most suitable for the filter medium as it is non- degradable, made of virgin pulp and rated at 1 7 GSM.
  • Each filter medium may be wound onto the centre tube to a roll form
  • the filter medium has one of its ends adhered to the centre tube by an adhesive means
  • the adhesive means is preferably inert to the lubricant or fuel.
  • An example of the adhesive means suitable for the filter element of the present invention is manufactured by 3M and is identified by 3M Scotch
  • the centre tube onto which the paper is wound can be reduced from 38mm diameter as in the existing toilet rolls to a diameter of 25mm and its length increased from 90mm long in the existing toilet rolls to 1 70mm long in the wound roll, while maintaining the same external diameter of the toilet rolls used in the existing filter elements
  • This arrangement of the filter medium of the present invention allows between 43m to 46m of the tissue paper to be rolled and employed per filter element forming an annular roll about 30mm-35mm wide.
  • the inside surface of the side wall of the cartridge is ribbed or otherwise profiled to deter tracking of the feedstock, between the side wall and the or each filter element.
  • the cross flow passage may be filled with a material with a high transverse porosity, such as woven gauze as an alternative or in addition to the moulded grid.
  • the elements may be simply stacked together in a cartridge.
  • adjacent filter media may be spaced by a spacer means
  • the spacer means is a moulded spacer from the same material as makes the cartridges.
  • the cartridge may have a single inlet at its open end for lubricant or oil to enter the cartridge.
  • the cartridge may have respective inlets at opposite ends and a shared transverse wall intermediate the opposite ends thus forming back-to-back filters.
  • the centre tube and the cross flow passages may be arranged between adjacent filter elements on opposite sides of the shared wall.
  • the filter cartridge is preferably recycled but may be discarded along with the filter element once the or each filter element becomes fully charged with trapped and retained solids.
  • the present invention resides in a filter housing for filtering a feedstock including: a body or housing; an inlet in the housing to allow a supply of feedstock to be filtered from the housing; an outlet in the housing to allow flow of filtered feedstock or filtrate from the housing; a hollow centre post disposed coaxially within the housing, the wall of the centre post having fluid communication ports between the outside and the bore thereof, the bore being connected to the housing outlet; the said filter cartridge within the housing; and filter cartridge installation means providing releasably sealable installation means providing releasable sealable installation of the filter cartridge in the housing whereby the feedstock flows from the inlet to the outlet through the filter cartridge.
  • the housing is closed at its base and open at its top, the top being closed by a cap fitted with sealing means to engage the wall of the housing.
  • the housing inlet and the housing outlet are at the base of the housing as is a drain port to enable contaminated feedstock to be drained form the bottom of the housing.
  • the open end (ie. inlet) of the (or uppermost) filter cartridge is adjacent the top of the housing so that the feedstock flows from the housing inlet upwardly through an annular passage defined by the wall of the housing and the cartridge.
  • a hollow centre post is disposed within, and sealably connected to, the centre tube.
  • sealing means seal against flow of fluid between the housing and the centre tube, so arranged that filtrate in the centre tube flows through the fluid communication ports into the bore of the centre post, and then to the housing outlet.
  • a filter medium retaining ring is provided about the upper end of the centre tube and bears against the top of the filter medium.
  • a compression spring, about the centre post, is preferably interposed between the housing cap and the retaining ring to urge the retaining ring into engagement with the filter element to seal the upper end of the centre tube and to retain the filter medium in the cartridge.
  • a pressure knob screw-threadably mounted on the centre post, bears against the closed end of the cartridge to urge the filter cartridge upwardly against the compression spring.
  • respective seal means seal the centre post to the coaxial hole through the retaining ring and the second end of the cartridge
  • the filter element is preferably a rol l of facial-quality paper tissue of standard size.
  • other non biodegradable filter media may be used, such as, but not limited to, non biodegradable cotton, hemp, artificial or synthetic fibres, or any suitable porous or foraminous material
  • the housing, cartridge, centre tube, centre post, lid and other hardware are preferably made from reusable polymeric, ceramic or composite compounds and the like suitable for being recycled.
  • the seals are of an oil resistant elastomer.
  • permanently deformed or rigid sealing material may also be used.
  • the filter cartridge is typically employed in a filter housing.
  • the filter element preferably has a reusable moulded centre core so that upon assembly the filter element and its associated centre core are inserted into the cartridge.
  • the centre core is typically a tube. Subsequently a centre tube is slid into the core, the centre tube having an end flange projecting radially outward and being located around the centre core and in use embedded in the filter element so that the centre core can be clamped against the filter element to retain same within the cartridge.
  • the centre tube preferably includes a plurality of recesses or grooves in its end that are operatively located adjacent the transverse end wall of the cartridge in order to assist in the tracking of filtrate from the grid and into the centre tube
  • a filtrate return tube having a small opening is usually located concentrically within the centre tube.
  • the filter element support grid is preferably a grid of ridges extending across the end wall with some ridges being deeper than other ridges in order to facilitate tracking of filtrate across the transverse end wall At the same time the ridges are closely spaced in order to provide uniform support for the filter element and to thereby maintain it above and spaced from the end wall of the cartridge to thereby inhibit clogging.
  • the cartridge preferably has a wide mouth narrowing to a mam body, the mouth providing a lead-in guide to lead the filter element into the cartridge during assembly.
  • the centre core of the filter element preferably includes a bevelled Iower edge also to assist in leading the core into position in the filter element during assembly Again the centre tube preferably has a bevelled edge also to facilitate assembly
  • the cartridge preferably includes internal annular ribbing
  • the seal between the centre core and the centre tube is typically formed utilising a annular grove on an outer surface of the centre tube in which an o- ⁇ ng is located so that the o- ⁇ ng seals against the core when the centre tube is in place.
  • Other functional equivalents can be employed.
  • the present invention resides that a method for recycling filter cartridges, the method employing a filter element extraction tool to engage and remove a flexible filter element from within a rigid filter cartridge, the tool having filter element gripping means adapted to be inserted into a filter cartridge to engage a spent filter element and to extract the filter element from the cartridge.
  • the tool typically employs a claw adapted to expand and upon entry into the cartridge close to grip the filter element and hold same so that upon extraction of the tool from within the cartridge the filter element is drawn from the cartridge.
  • Figure 1 is a flow diagram illustrating a preferred example of the method of recycling according to the present invention
  • Figure 2 is a perspective view of a typical filter assembly
  • Figure 3 is a section through a typical filter assembly
  • Figure 4 is a section through another embodiment of the present invention
  • Figure 5 is a section illustrating a typical end wall
  • Figure 6 is a section illustrating a further embodiment of a centre tube suitable for use with a filter assembly according to the present invention.
  • a cartridge is made according to the teachings of the present invention and in this case formed from a moulded carbon fibre reinforced plastics material so that the cartridge is sufficiently ridged so that it can be reused.
  • the cartridge is injection moulded using a formulation of 60% by weight nylon melt resin with chopped glass fibre to 40% by weight.
  • the resin has a melt temperature in excess of 200°C.
  • a filter element is prepared and this involves a 100% cellulose element 12 into which a reusable moulded or otherwise formed reinforced carbon fibre centre core 13 is pushed.
  • the filter element and core 1 3 are forced using a press either together or in turn into the cartridge 10.
  • the cartridge 10 in the illustrated embodiment includes an annular flare at 14 which operates as a filter element lead-in guide and assists in feeding the filter element into the cartridge.
  • the end wall 1 5 of the cartridge illustrated includes pro j ections to be described further below and the side walls include spaced annular ridges.
  • the projections serve to keep the filter element away from the end wall 1 5 so that filtrate can track across the end wall 15 into the centre core 1 3.
  • the annular ridges are used to inhibit tracking of filtrant between the filter element and the walls of the cartridge.
  • centre tube shown at 1 7 is pushed into the assembly.
  • the centre tube in this case includes sealing means in the form of an o- ⁇ ng at 18 which seals against the core 1 3 to inhibit tracking of filtrant between the centre tube 1 7 and the core 1 3
  • the filter cartridge is then placed in position inside a filter housing to be described as follows.
  • the housing can be on say a truck depicted schematically at 19 and once the filter element 1 1 is spent the whole cartridge is returned from the vehicle 19 to the factory for recycling.
  • the central tube 1 7 is withdrawn and then a suitable tool 20 shown schematically in Figure 1 is used to extract the spent filter element
  • the tool 20 includes a claw assembly 21 utilising a manually operable expander 22 so that upon insertion of the claw assembly 21 into the filter element 1 1 the expander 22 can be employed to move the jaws 23 of the claw assembly to the position illustrated at 24.
  • a lever 25 is used to extract the claw assembly 21 and thereby the filter element 1 1 from the cartridge 10. It will be appreciated once the spent filter element has been removed from the cartridge the cartridge can be reloaded and it can be returned and reused over and over again.
  • Figures 2 and 3 illustrate how the filter cartridge 10 and its associated element are used in a filter housing while Figure 4 illustrates an alternative embodiment where the filter cartridge in this case 26 is effectively back-to-back filter assembles 10 where the filter elements are half size and a central wall having back-to-back grids is formed at 27.
  • the cores and central tubes are all half sized as well and in effect the cartridge illustrated in Figure 4 is back-to-back cartridges 10.
  • This particular cartridge is reused in a similar fashion to the cartridge described earlier and recycled in the same general way.
  • the cartridge of Figure 3 due to its greater capacity is typically used for oil filtering application while the cartridge of the Figure 4 is used for fuel filtration.
  • FIG. 5 A typical end wall of each of the cartridges, illustrated in Figures 3 and 4 is shown in Figure 5 while the end of a preferred central tube having flow through passages at 28 is illustrated in Figure 6.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Filtering Materials (AREA)
  • External Artificial Organs (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Procédé de recyclage et outil utilisé avec ledit procédé. Un matériau plastique moulé est renforcé par des fibres de carbone de manière à ce que ladite cartouche soit suffisamment rigide pour être réutilisée. Ladite cartouche est moulée par injection à l'aide d'une composition constituée à 60 % en poids de résine fondue de nylon et à 40 % en poids de fibre de verre hachée. La résine possède une température à l'état fondu supérieure à 200 °C. Un élément de filtre (11) comporte un élément constitué à 100 % de cellulose (12) dans lequel est poussé une partie centrale (13) renforcée par des fibres de carbone réutilisable et moulée ou formée d'une autre manière. L'élément de filtre et la partie centrale (13) sont introduits dans la cartouche (10) par la force à l'aide d'une presse, soit ensemble, soit l'un après l'autre. La cartouche (10) présentée dans le mode de réalisation illustré comporte un évasement annulaire (14) qui sert d'élément de guidage de pénétration de l'élément de filtre et contribue à l'introduction de l'élément de filtre dans la cartouche. L'outil (20) comporte un ensemble griffes (21) utilisant un dispositif d'expansion (22) à opération manuelle si bien que lors de l'introduction de l'ensemble griffes (21) dans l'élément de filtre (11), ledit dispositif d'expansion (22) peut être employé pour déplacer les mâchoires (23) de l'ensemble griffes dans la position illustrée (24). Un levier (25) est utilisé pour extraire l'ensemble griffes (21) et, partant, l'élément de filtre (11) de la cartouche (10). Il est à noter qu'une fois l'élément de filtre usé sorti de la cartouche, ladite cartouche peut être rechargée, replacée et réutilisée un grand nombre de fois.
EP96939751A 1995-11-28 1996-11-28 Cartouche de filtre et procede Withdrawn EP0876185A4 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AUPN6816/95 1995-11-28
AUPN6816A AUPN681695A0 (en) 1995-11-28 1995-11-28 A filter cartridge
AUPN9731A AUPN973196A0 (en) 1996-05-07 1996-05-07 Fluid filters
AUPN9731/96 1996-05-07
PCT/AU1996/000762 WO1997019737A1 (fr) 1995-11-28 1996-11-28 Cartouche de filtre et procede

Publications (2)

Publication Number Publication Date
EP0876185A1 true EP0876185A1 (fr) 1998-11-11
EP0876185A4 EP0876185A4 (fr) 1999-02-24

Family

ID=25645067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96939751A Withdrawn EP0876185A4 (fr) 1995-11-28 1996-11-28 Cartouche de filtre et procede

Country Status (11)

Country Link
EP (1) EP0876185A4 (fr)
JP (1) JP2000500396A (fr)
KR (1) KR19990071704A (fr)
CN (1) CN1202837A (fr)
AR (1) AR004803A1 (fr)
BR (1) BR9611794A (fr)
CA (1) CA2239084A1 (fr)
MX (1) MX9804147A (fr)
NZ (1) NZ322831A (fr)
TW (1) TW348066B (fr)
WO (1) WO1997019737A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPP784098A0 (en) * 1998-12-18 1999-01-21 Filter Technology Australia Pty Limited A filter cartridge and process
AU729523B2 (en) * 1998-12-18 2001-02-01 Filter Technology Australia Pty Limited A filter cartridge and process
AU780890B2 (en) * 1999-09-14 2005-04-21 Filter Technology Australia Pty Limited Disposable oil filter cartridge and oil filter assembly
KR100593323B1 (ko) * 2004-07-14 2006-06-26 이상범 재사용가능 지지 코어 조립체를 구비하는 필터 카트리지및 재사용 방법
KR100614913B1 (ko) * 2004-12-17 2006-08-25 (주)넥스컴스 섬유혼성구조를 이용한 고내압형 정수튜브 및 그 제조방법
GB2477942B (en) 2010-02-18 2012-07-04 Icon Technology Systems Ltd Water filters
CN102390097A (zh) * 2011-08-09 2012-03-28 常熟市慧丰塑料制品有限公司 一种增强尼龙塑料pa6的加工工艺
CN102716668A (zh) * 2012-06-13 2012-10-10 丰信精细化工(上海)有限公司 一种快速取出反渗透系统膜元件的方法
JP5571865B1 (ja) * 2013-12-25 2014-08-13 株式会社小松製作所 フィルタ取外工具
CN109395444B (zh) * 2018-12-18 2023-11-24 江苏台合达环保设备有限公司 一种滤桶及其装配方法
CN112587989B (zh) * 2020-09-01 2022-12-27 中国科学院上海应用物理研究所 一种滤芯装置、过滤器及其应用
CN113304517A (zh) * 2021-05-25 2021-08-27 刘万斌 便拆式油过滤器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547857A (en) * 1947-11-10 1951-04-03 Sackner Prod Inc Lubricant filter
FR1139118A (fr) * 1955-12-28 1957-06-25 Nécessaire pour la conversion de filtres à huile
US4017400A (en) * 1974-01-17 1977-04-12 Schade Harvey R Oil filter
AU510812B2 (en) * 1976-11-05 1980-07-17 Archibald Robert McCall Oil filter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5342519A (en) * 1993-07-30 1994-08-30 Donaldson Company, Inc. Fluid filter cartridge with replaceable filter element
US5711872A (en) * 1994-06-15 1998-01-27 Jones; John A. Reusable oil filter assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547857A (en) * 1947-11-10 1951-04-03 Sackner Prod Inc Lubricant filter
FR1139118A (fr) * 1955-12-28 1957-06-25 Nécessaire pour la conversion de filtres à huile
US4017400A (en) * 1974-01-17 1977-04-12 Schade Harvey R Oil filter
AU510812B2 (en) * 1976-11-05 1980-07-17 Archibald Robert McCall Oil filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9719737A1 *

Also Published As

Publication number Publication date
KR19990071704A (ko) 1999-09-27
BR9611794A (pt) 1999-07-13
AR004803A1 (es) 1999-03-10
EP0876185A4 (fr) 1999-02-24
MX9804147A (es) 1998-11-29
CN1202837A (zh) 1998-12-23
NZ322831A (en) 2000-02-28
WO1997019737A1 (fr) 1997-06-05
JP2000500396A (ja) 2000-01-18
TW348066B (en) 1998-12-21
CA2239084A1 (fr) 1997-06-05

Similar Documents

Publication Publication Date Title
WO1997019737A1 (fr) Cartouche de filtre et procede
US5601717A (en) Filter media cartridge
JP4360057B2 (ja) 浸漬型膜濾過装置および浸漬型膜濾過方法
US5437788A (en) Backwashing filter assembly
EP0672442B1 (fr) Bague d'étanchéité pour cellule filtrante et cartouche filtrante du type cellulaire
EP1115468A1 (fr) Ensemble filtre a huile comprenant un element de filtre amovible
US20140021124A1 (en) Form-Molded Filter Element and Method
EP1140458B1 (fr) Element filtrant et procede de fabrication associe
EP0279900B1 (fr) Filtre d'huile
AU730179B2 (en) A filter cartridge and method
AU6446299A (en) A filter cartridge and method
AU4882499A (en) A filter cartridge and method
JP2988576B2 (ja) 汚泥のろ過濃縮方法
CN109416006B (zh) 水分凝集器、燃料过滤装置、以及水分凝集器的制造方法
CN1229001A (zh) 使用纤维软管的微过滤方法及其设备
CN221588202U (zh) 一种采用多孔陶瓷的油水分离器
JP2018003757A (ja) 水凝集器、燃料フィルタ装置、および水凝集器の製造方法
CN213493007U (zh) 一种高效型多肽生产用超滤设备
CN217367385U (zh) 一种基于涤纶短纤维材料的过滤袋
AU729523B2 (en) A filter cartridge and process
RU98112128A (ru) Контейнер фильтра и способ
CA2604789C (fr) Element filtrant et procede de fabrication associe
AU695794B2 (en) Fluid filters
JP2018003758A (ja) 水凝集器、および燃料フィルタ装置
JPS62162999A (ja) 放射性廃水又は放射性復水の濾過方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19980623

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

A4 Supplementary search report drawn up and despatched

Effective date: 19990113

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 19991130

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20010130