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WO1993010879A1 - Filtre ceramique - Google Patents

Filtre ceramique Download PDF

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Publication number
WO1993010879A1
WO1993010879A1 PCT/AU1992/000646 AU9200646W WO9310879A1 WO 1993010879 A1 WO1993010879 A1 WO 1993010879A1 AU 9200646 W AU9200646 W AU 9200646W WO 9310879 A1 WO9310879 A1 WO 9310879A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter assembly
filter element
assembly according
debris
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.)
Ceased
Application number
PCT/AU1992/000646
Other languages
English (en)
Inventor
Ronald William Arthur
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.)
MURASAP INDUSTRIES Ltd
Original Assignee
MURASAP INDUSTRIES 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
Application filed by MURASAP INDUSTRIES Ltd filed Critical MURASAP INDUSTRIES Ltd
Publication of WO1993010879A1 publication Critical patent/WO1993010879A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
    • 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
    • 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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
    • B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/043—Filter tubes connected to plates
    • B01D2201/0453—Filter tubes connected to plates positioned between at least two plates

Definitions

  • This invention relates to a filter assembly and in particular a filter assembly of the self-cleaning type which may be used to filter drinking water however this is not the only fluid that may be used in such an assembly.
  • Filters are available which have the facility to filter out virus and bacteria from water and other fluids and thereby purify it for consumption and/or various industrial uses. Notwithstanding the availability of such filters, filters capable of performing these functions have previously used osmotic filter films and these are very fragile and expensive to replace.
  • a filter assembly comprises at least one filter element, at least one debris removal member biased with biasing means against a debris accumulation surface of said filter element located such that with relative movement between said filter element and said debris removal member, debris is removed from the accumulation surface of said filter element.
  • the filter element is annular in shape and located co-axial of an annular apertured sleeve and at least one debris removal member is attached to said sleeve and biased against said filter element.
  • a driving means for rotating said sleeve with respect to said filter element.
  • a further aspect of the filter assembly comprises a timing means adapted to actuate the driving means after a predetermined time.
  • the filter assembly comprises a fluid flow measurement means for measuring the flow of fluid through the filter assembly and further adapted to actuate the driving means after measuring a predetermined minimum flow.
  • a method of cleaning a filter assembly which further comprises an outlet valve located so as to allow fluid on the accumulation surface side of the filter element out of the filter assembly
  • the method comprises the steps of (a) actuating said driving means and (b) opening said outlet valve, while pumping fluid into said filter assembly so that debris flows out of the outlet valve of the filter assembly and the pumped fluid only contacts the accumulation surf ce of the filter means.
  • Fig 1 is a top view of a filter assembly according to • this invention.
  • Fig 2 is a partial sectioned side view of Fig 1 taken on line 2-2 of Fig 1;
  • Fig 3 is a section taken on plane 3-3 of Fig 2; and Fig 4 is.a fragmentary section taken on plane 4-4 of Fig 2, but drawn to a much larger scale.
  • a filter assembly 10 comprises a housing having a cylindrical side wall 11 and dome shaped end caps 12. There are provided upper and lower plates 13 and 14, respectively within the housing and displaced from respective ends, the upper plate having a central aperture which receives a tension bolt 15 which is coupled to a tension spring 16 and the upper plate is movable so that it becomes a pressure plate.
  • the lower plate 14 however is carried on an upstanding hollow stem 18 which extends upwardly from the lower end cap 12, and the stem 18 is perforate at 19 to open into a manifold 20 which is in communication with the lower ends of each of a plurality of ceramic filter elements 21.
  • Each filter element 21 is contained within a respective apertured protective sleeve 22 (shown in most detail in Fig 4) and the sleeves 22 constitute a fixing point for at least one debris removal member, comprising in this embodiment a filter scrubbing pad holder 25 and a scrubbing pad 23.
  • Each scrubbing pad 23 comprises a pad of abrasive cleaning material, in this embodiment being an abrasive pad sold under the registered trade mark SCOTCH BRITE.
  • Each scrubbing pad 23 is carried on the pivoting arm pad holder 25 which itself projects from a pivot pin 26 which is pivoted between the end plates 27 at the lower and upper ends of the filter element 21.
  • the filter element may comprise a ceramic medium of suitable porosity to restrict the passage of debris and foreign matter which may be as small as 0.2 to 0.3 microns.
  • the filter element may also comprise sintered material with similar porous and filtering characteristics.
  • the end plates 27 are located in the ends of and fixed with respect to the sleeves 22, so as to rotate with them and this rotation is effected by each of the sleeves having attached to one end thereof a gear.
  • a train of gears is provided and includes a driving gear 28 which engages with one of the plurality of réelle inter-meshing gears 29, such that, when the driving gear is actuated the inter-meshed gears are driven to thereby rotate respective sleeves 22.
  • the driving gear may be driven by an external motor coupled to the driving shaft ' 30 which extends through the upper end of the end cap 12.
  • the driving means may be selectively actuated by manual means or motorised driving forces, or control of when the driving means is actuated, may be achieved by a timing means.
  • the timing means is set to operate at preset times of the day, preferably, when the filter assembly is not being used or during low activity periods of the industrial environment in which the filter assembly is being used.
  • Each filter element may preferably be a single length of annular material but may also comprise a plurality of annular filter elements which are aligned end to end and the interconnection between each adjacent filter element is a sealed interconnection so that fluid does not have a path of lesser resistance to travel.
  • a bias means comprising in this embodiment a helical coil torsion spring 32 arranged as shown in Fig 4.
  • a bias means comprising in this embodiment a helical coil torsion spring 32 arranged as shown in Fig 4.
  • scrubbing pads 23 traverse the circumference of the respective filter elements 21, and alternatively, the holders for the pads 23 need not necessarily be associated with the perforate sleeves 22.
  • the driving of the sleeves 22 requires some pressure to be retained between the pads 23 and the outer surfaces of the filter element 21, and this is effected by helical coil torsion springs 32 arranged as shown in Fig 4.
  • the scrubbing pads 23 traverse the circumferences of the respective filter elements 21.
  • an outlet valve (not shown) is located on the filter assembly so as to allow fluid on the accumulation surface side of the filter element, out of the filter assembly.
  • a method of cleaning the filter assembly which preferably is accomplished using infiltrated water although unfiltrated water can be used, and is achieved by actuating the driving means to remove debris from the accumulation surface of the filter element while opening the outlet valve during pumping of infiltrated fluid (water) into the filter assembly, so that debris flows out of the outlet valve of the filter assembly and the pumped fluid only contacts the accumulation surface of the filter means .
  • Actuation of the driving means (also not shown) during back flushing may also be used.
  • a further alternative control mechanism for the onset of the operation of the driving means may be through the use of a pressure sensor which is responsive to the pressure of the filtered fluid exiting from rhe filter assembly.
  • a predetermined minimum flow pressure of filtered water from the filter assembly is representative of a filter which has reduced in its efficiency as the debris builds up on the filter element.
  • the filter assembly is not restricted in its use to the filtration of water for domestic and industrial uses and the invention provides automatic cleansing of filter assemblies of many types and configurations.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

Ensemble à filtre (10) configuré pour se nettoyer automatiquement et pour s'utiliser dans divers processus de filtrage et avec divers fluides. L'ensemble à filtre comporte un corps (11, 12) renfermant des éléments filtrants (21), habituellement en matériau céramique ou microporeux fritté, disposés en cylindre dont l'intérieur reçoit un fluide, généralement de l'eau, pompé à partir de l'extérieur. On obtient ainsi de l'eau filtrée et une accumulation de résidus du côté de l'entrée du filtre. Une pluralité d'éléments filtrants (21) est contenue dans un manchon (22) doté d'ouvertures et portant un élément d'élimination de résidus comportant un support (25) auquel est fixé un bloc de nettoyage à la brosse (23) serré contre le côté d'accumulation de résidus des éléments filtrants (21). Des engrenages d'entraînement (28) sont prévus aux extrémités du manchon (22) pour être entraînés en rotation de manière électrique ou par une autre force motrice afin que le bloc de nettoyage à la brosse (23) use par frottement le côté d'accumulation de résidus des éléments filtrants (21), tandis que l'eau d'entrée pompée entre et sort du côté d'entrée des éléments filtrants (21) de l'ensemble à filtre (10). L'opération de nettoyage à la brosse peut être amorcée de manière périodique ou en réponse à la détection de caractéristiques telles qu'une réduction de débit, une pression accrue de pompage ou une accumulation de résidus à la surface des éléments filtrants.
PCT/AU1992/000646 1991-12-03 1992-12-03 Filtre ceramique Ceased WO1993010879A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPK981991 1991-12-03
AUPK9819 1991-12-03

Publications (1)

Publication Number Publication Date
WO1993010879A1 true WO1993010879A1 (fr) 1993-06-10

Family

ID=3775864

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1992/000646 Ceased WO1993010879A1 (fr) 1991-12-03 1992-12-03 Filtre ceramique

Country Status (1)

Country Link
WO (1) WO1993010879A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995000230A1 (fr) * 1993-06-21 1995-01-05 Murasap Industries Limited Filtre ceramique
WO2011041513A3 (fr) * 2009-09-30 2011-10-20 Itt Water & Wastewater Leopold, Inc. Ensemble dispositif de maintien de milieu résistant au bouchage
CN103007602A (zh) * 2012-12-14 2013-04-03 江苏光阳动力环保设备有限公司 一种自动清洗过滤器
US9022223B1 (en) 2012-08-02 2015-05-05 Instapure Brands, Inc. Self-cleaning water filtration system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692183A (en) * 1970-03-26 1972-09-19 Voith Gmbh J M Filter for cleaning suspensions
AU7971975A (en) * 1974-03-29 1976-10-07 Goldie Ronald Filter
US3985656A (en) * 1974-04-29 1976-10-12 Kostas Savas Arvanitakis Filter cleaning apparatus
US4608169A (en) * 1985-07-15 1986-08-26 Arvanitakis Kostas S Filter brush
CH675546A5 (en) * 1987-12-18 1990-10-15 Arthur Schlaginhaufen Domestic water tap filter - has sieve rotating while advancing past radial bristles to detach externally deposited solids for flushing
AU5712190A (en) * 1989-06-29 1991-01-03 Outokumpu Oy Method for cleaning the filter plates of a suction drier
AU5988690A (en) * 1989-08-01 1991-02-07 Nedpac Engineering Pty. Ltd. An interstage screen
US5080788A (en) * 1990-08-24 1992-01-14 Chen T H Water filter with fluid actuated cleaner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692183A (en) * 1970-03-26 1972-09-19 Voith Gmbh J M Filter for cleaning suspensions
AU7971975A (en) * 1974-03-29 1976-10-07 Goldie Ronald Filter
US3985656A (en) * 1974-04-29 1976-10-12 Kostas Savas Arvanitakis Filter cleaning apparatus
US4608169A (en) * 1985-07-15 1986-08-26 Arvanitakis Kostas S Filter brush
CH675546A5 (en) * 1987-12-18 1990-10-15 Arthur Schlaginhaufen Domestic water tap filter - has sieve rotating while advancing past radial bristles to detach externally deposited solids for flushing
AU5712190A (en) * 1989-06-29 1991-01-03 Outokumpu Oy Method for cleaning the filter plates of a suction drier
AU5988690A (en) * 1989-08-01 1991-02-07 Nedpac Engineering Pty. Ltd. An interstage screen
US5080788A (en) * 1990-08-24 1992-01-14 Chen T H Water filter with fluid actuated cleaner

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995000230A1 (fr) * 1993-06-21 1995-01-05 Murasap Industries Limited Filtre ceramique
WO2011041513A3 (fr) * 2009-09-30 2011-10-20 Itt Water & Wastewater Leopold, Inc. Ensemble dispositif de maintien de milieu résistant au bouchage
US8657122B2 (en) 2009-09-30 2014-02-25 Xylem Water Solutions Zelienople Llc Clog resistant media retainer assembly
US9022223B1 (en) 2012-08-02 2015-05-05 Instapure Brands, Inc. Self-cleaning water filtration system
CN103007602A (zh) * 2012-12-14 2013-04-03 江苏光阳动力环保设备有限公司 一种自动清洗过滤器
CN103007602B (zh) * 2012-12-14 2014-12-10 江苏光阳动力环保设备有限公司 一种自动清洗过滤器

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