EP0415954A1 - Bandes de materiau de filtrage a moulures et corps de filtrage composes de ce materiau - Google Patents

Bandes de materiau de filtrage a moulures et corps de filtrage composes de ce materiau

Info

Publication number
EP0415954A1
EP0415954A1 EP89905067A EP89905067A EP0415954A1 EP 0415954 A1 EP0415954 A1 EP 0415954A1 EP 89905067 A EP89905067 A EP 89905067A EP 89905067 A EP89905067 A EP 89905067A EP 0415954 A1 EP0415954 A1 EP 0415954A1
Authority
EP
European Patent Office
Prior art keywords
filter
beads
web
filter material
moldings
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.)
Pending
Application number
EP89905067A
Other languages
German (de)
English (en)
Inventor
Sigbert Widmann
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.)
Knecht Filterwerk GmbH
Original Assignee
Knecht Filterwerk GmbH
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 DE3815146A external-priority patent/DE3815146C1/de
Priority claimed from DE3815145A external-priority patent/DE3815145C1/de
Application filed by Knecht Filterwerk GmbH filed Critical Knecht Filterwerk GmbH
Publication of EP0415954A1 publication Critical patent/EP0415954A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • 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
    • B01D29/016—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 with corrugated, folded or wound filtering elements
    • 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
    • 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
    • B01D29/111—Making filtering elements
    • 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
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound 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
    • B01D29/11—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
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B01D29/213—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets having a concertina shape

Definitions

  • the invention relates to web-shaped filter material, in particular filter paper for liquid or gas filters, with molded beads according to the preamble of patent claim 1 and filter bodies made of these materials according to the preambles of patent claims 7 and 10.
  • Beads in filter papers have so far had semicircular cross sections (for example DE-OS 19 30 715). With such beads, the paper thickness is at its lowest at the transition from the undeformed flat filter surface into the bead, which can result in material-related filtration disturbances at these locations which are subject to high static and dynamic loads during filter operation.
  • Filter bodies made of zigzag-folded sheet material provided with beads are also known, for example, from DE-PS 12 48 618.
  • the invention is based on the object of providing the filter web materials with beads and forming them into filter bodies with folds laid in a zigzag shape in such a way that a high static stability of the folds of the filter body while the filter material is undamaged by the beads is achievable.
  • FIG. 1 shows a cross section through a bead running perpendicular to the plane of the filter web
  • Fig. 2 is a plan view of part of a filter material web
  • Fig. 3 shows a section through the filter material web along line III - III on an enlarged scale
  • Fig. Is a perspective view of a section of a zigzag folded filter sheet
  • FIG. 5 shows a view of the end face of a filter body folded in a zigzag shape
  • FIG. 6 shows a section along line VI VI through the folds of the filter body according to FIG. 5
  • FIG. 7 shows a view of the end face of an alternative embodiment of a filter body folded in a zigzag shape
  • FIG. 8 shows a section along line VIII VIII through the folds of the filter body according to FIG. 7
  • Fig a view of the front a further embodiment of a filter body folded in a zigzag shape
  • FIG. 10 shows a section along line X-X through the folds of the filter body according to FIG. 9
  • a chain line is a mathematical term and is defined by the course of a chain loaded with its own weight with an infinite number of links. Such a chain line is also sometimes referred to as a rope line.
  • the filter material has a thickness in cross sections perpendicular to the plane of the web, which has a thickness within the range of Beading continuously decreases from the undeformed filter web sections up to the zenith height H of the bead, the filter material being increasingly compressed in the sense of the decreasing thickness.
  • the thickness is the same at least in the flanks of the bead which lie opposite one another transversely to the longitudinal direction at the same perpendicular distance from the undeformed filter web plane.
  • the beads have a width B within the non-embossed filter path plane, which is less than 2 in relation to the zenith height H.
  • the thickness of the filter material is less than 80% of the thickness of the undeformed filter material.
  • the filter web material 1 is provided with individual folding lines transverse to its longitudinal extension, around which the web material can be folded in a zigzag shape.
  • double beads are embossed. These double beads consist of an inflow bead 3 coming to rest in an operational filter on the inflow side and two outflow beads 4 extending from the flanks of this bead directly to the other side of the filter web.
  • the inflow bead 3 extends further out vertically on the material web than the two respectively assigned outflow beads 4.
  • the inflow beads 3 of two adjacent fold sections lie together on the upstream side, while support is provided on the downstream side by means of the smaller outflow beads 4.
  • the arrangement of the beads 3 and 4 enables, in particular on the outflow side, symmetrical support of the individual filter web fold sections over the width of the filter web. As a result, while maintaining a large free filter area, extremely secure support against collapse of the filter web fold sections can be achieved.
  • the filter web material is laid in individual folds transverse to its longitudinal extent.
  • the W-shaped beads 5 alternate with V-shaped beads 6 in the longitudinal direction of the filter web at the same distance.
  • the one-sided elevation 7 of the W-shaped beads 5 and the V-shaped bead 6 protrude in each case on the upstream side from the filter web material.
  • Arrows 8 indicate the direction of flow of the filter web material.
  • the folds are each laid out in such a way that the outflow-side elevations 9 of the bead 5 abut the foot of the V-shaped bead 6 on the downstream side.
  • the arrangement of the beads 5 and 6 enables in particular on the outflow side between the individual beads a symmetrical support of the individual filter web fold sections. In this way, while maintaining a large free filter area, extremely secure support against collapse of the filter web sections can be achieved. In addition, a larger flow space is available on the upstream side than on the downstream side between the individual folds.
  • FIGS. 9 and 10 looks as follows.
  • the filter web material 10 is folded in a zigzag shape transversely to its longitudinal extension. On the upstream and downstream sides, beads 11 and 12 respectively protrude. the filter web out. The direction of flow through the filter material is marked by arrows 13. The web material is folded in such a way that the beads 11 protruding on the upstream side abut each other at their foot areas and on the upstream side at their head areas.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)

Abstract

Afin d'augmenter la rigidité et la résistance des moulures (3, 4) formées dans des bandes de matériau de filtrage, notamment du papier-filtre pour filtres à liquides ou à gaz pourvus de moulures (3, 4), dans lesquels le matériau de filtrage (1) est plié en zigzag, section par section, ces sections étant maintenues mutuellement écartées par les moulures (3, 4), et afin d'éviter que l'effet d'écartement assuré par les moulures ne se perde après de longues durées de fonctionnement, les moulures sont courbées en suivant une ligne de chaînette. En outre, chaque moulure (3) qui fait saillie sur la bande de matériau de filtrage du côté afflux est complétée le long de ses côtés longitudinaux par des moulures (4) qui font saillie sur le côté écoulement de la bande de matériau de filtrage. Les hauteurs des moulures du côté écoulement (4) sont inférieures aux hauteurs correspondantes des moulures du côté afflux (3) de la bande de matériau de filtrage. Dans des bandes de matériau de filtrage adjacentes superposées, les moulures d'écoulement (4) d'une part et les moulures d'afflux (3) d'autre part reposent les unes sur les autres.
EP89905067A 1988-05-04 1989-04-29 Bandes de materiau de filtrage a moulures et corps de filtrage composes de ce materiau Pending EP0415954A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3815145 1988-05-04
DE3815146A DE3815146C1 (en) 1988-05-04 1988-05-04 Web-shaped filter material, in particular filter paper for liquid filters or gas filters, having moulded beads
DE3815145A DE3815145C1 (en) 1988-05-04 1988-05-04 Filter body made of a zigzag-shaped pleated web
DE3815146 1988-05-04

Publications (1)

Publication Number Publication Date
EP0415954A1 true EP0415954A1 (fr) 1991-03-13

Family

ID=25867735

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89905067A Pending EP0415954A1 (fr) 1988-05-04 1989-04-29 Bandes de materiau de filtrage a moulures et corps de filtrage composes de ce materiau
EP89710035A Withdrawn EP0341192A1 (fr) 1988-05-04 1989-04-29 Matériau filtrant en bande avec des moulures façonnées et corps filtrant constitué de ce matériau

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89710035A Withdrawn EP0341192A1 (fr) 1988-05-04 1989-04-29 Matériau filtrant en bande avec des moulures façonnées et corps filtrant constitué de ce matériau

Country Status (4)

Country Link
US (1) US5080790A (fr)
EP (2) EP0415954A1 (fr)
JP (1) JPH03505058A (fr)
WO (1) WO1989010781A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5958236A (en) * 1993-01-13 1999-09-28 Derrick Manufacturing Corporation Undulating screen for vibratory screening machine and method of fabrication thereof
US5417858A (en) * 1993-01-13 1995-05-23 Derrick Manufacturing Corporation Screen assembly for vibrating screening machine
US6000556A (en) * 1993-01-13 1999-12-14 Derrick Manufacturing Corporation Screen assembly for vibratory screening machine
ES2135563T3 (es) * 1993-01-13 1999-11-01 Derrick Mfg Corp Tamiz ondulado para una maquina de tamizado vibratorio y metodo de fabricacion del mismo.
ATE208225T1 (de) * 1993-12-30 2001-11-15 Jacobi Systemtechnik Gmbh Filtereinsatz und verfahren zu dessen herstellung
DE19735993A1 (de) * 1997-08-19 1999-02-25 Mann & Hummel Filter Filterelement, insbesondere zur Flüssigkeitsfilterung
US6165242A (en) * 1999-03-27 2000-12-26 Aaf International, Inc Pleated filter media with crest spacers and method of making
US6165241A (en) * 1999-03-27 2000-12-26 Aaf International, Inc. Pleated filter media with strip spacers and method of making
FR2858565B1 (fr) * 2003-08-07 2006-02-24 Polyboost Caisson de repartition et de filtration prealable d'un liquide et filtre biologique granulaires utilisant un tel caisson
EP2117672B1 (fr) 2007-02-02 2013-01-23 Donaldson Company, Inc. Ensemble de supports de filtration d'air
CN102438723B (zh) 2007-06-26 2015-12-16 唐纳森公司 过滤介质包，过滤元件和方法
JP5986354B2 (ja) 2008-02-04 2016-09-06 ドナルドソン カンパニー，インコーポレイティド 縦溝流路付きろ過媒体を形成する方法および装置
AU2009273893A1 (en) 2008-07-25 2010-01-28 Donaldson Company, Inc. Pleated filtration media pack comprising flutes
US10363513B2 (en) 2009-08-03 2019-07-30 Donaldson Company, Inc. Method and apparatus for forming fluted filtration media having tapered flutes
US10058812B2 (en) * 2010-01-25 2018-08-28 Donaldson Company, Inc. Pleated filtration media having tapered flutes
TWI735381B (zh) * 2020-11-18 2021-08-01 震陵企業股份有限公司 過濾網

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062378A (en) * 1959-03-30 1962-11-06 Southwick W Briggs Filter element and method
DE1922976A1 (de) * 1969-05-06 1970-11-19 Mann & Hummel Filter Filtereinsatz fuer Fluessigkeiten,insbesondere fuer das Schmieroel von Bronnkraftmaschinen
GB1429783A (en) * 1972-03-11 1976-03-24 Gen Motors Ltd Fluid filter units
US3849314A (en) * 1973-06-21 1974-11-19 Marvel Eng Co Filter media inserts
US4732678A (en) * 1986-05-01 1988-03-22 Wix Corporation Filter body having closely adjacent filter material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8910781A1 *

Also Published As

Publication number Publication date
US5080790A (en) 1992-01-14
WO1989010781A1 (fr) 1989-11-16
EP0341192A1 (fr) 1989-11-08
JPH03505058A (ja) 1991-11-07

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Free format text: VERFAHREN ABGESCHLOSSEN INFOLGE VERBINDUNG MIT 89710035.0/0341192 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) VOM 30.04.91.