DE3914409A1 - Resisting collapse of thin corrugated filter strips - by relative positioning of V and W=section beads - Google Patents

Resisting collapse of thin corrugated filter strips - by relative positioning of V and W=section beads

Info

Publication number
DE3914409A1
DE3914409A1 DE3914409A DE3914409A DE3914409A1 DE 3914409 A1 DE3914409 A1 DE 3914409A1 DE 3914409 A DE3914409 A DE 3914409A DE 3914409 A DE3914409 A DE 3914409A DE 3914409 A1 DE3914409 A1 DE 3914409A1
Authority
DE
Germany
Prior art keywords
beads
filter
shaped
web
filter material
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Withdrawn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
DE3914409A
Other languages
German (de)
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
Application filed by Knecht Filterwerk GmbH filed Critical Knecht Filterwerk GmbH
Priority to DE3914409A priority Critical patent/DE3914409A1/en
Publication of DE3914409A1 publication Critical patent/DE3914409A1/en
Withdrawn legal-status Critical Current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
    • B01D29/05—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
    • B01D29/13—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
    • B01D29/23—Supported filter elements arranged for outward flow filtration
    • B01D29/232—Supported filter elements arranged for outward flow filtration with corrugated, folded or wound sheets

Landscapes

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

Abstract

A filter is formed of zig-zag webs of relatively thin material held apart by transverse beads sepd. by unbeaded sections "V" and "W" shaped beads alternate lengthwise of the webs. Each "W" bead has a raised projection on the upstream side of the filter, and which on both sides emerges into a downstream projection of equal height. The "V" beads only project on the upstream side, and distance between "V" transitions into unbeaded sections does not exceed max. distance between long arms of "W". Beads engage symmetrically. ADVANTAGE - Prevents undesired collapse of filter structure, esp. on downstream pressurised side.

Description

Die Erfindung betrifft einen Filterkörper aus einer zick-zack-förmig gefalteten Bahn eines relativ dünn­ wandigen Filtermaterials nach dem Oberbegriff des Pa­ tentanspruchs 1.The invention relates to a filter body from a zigzag folded web of a relatively thin wall filter material according to the generic term of Pa claim 1.

Ein derartig aufgebauter Filterkörper ist aus DE-PS 12 48 618 bekannt. Dort sind die Sicken so geformt, daß sich bei aufeinanderliegenen Filtermaterialbahnen an- und abströmseitig gleich geformte Strömungsräume ergeben. Dies ergibt sich bei jener bekannten Ausfüh­ rung dadurch, daß jeweils eine zur Anströmseite her­ ausragende Sicke mit ihrer Längsseite direkt an eine zur Abströmseite herausragende Nachbarsicke angrenzt. Bei aufeinanderliegenden Filterbahnen führt dies dazu, daß jeweils an einem Ende des Strömungsraumes von diesem Strömungsraum nach außen weisende Sicken den Abschluß bilden. Bei dem abströmseitigen Strö­ mungskanal, der von dem anströmenden Medium, insbe­ sondere einer Flüssigkeit, unter Druck steht, kann es gerade an dieser Stelle leicht zu einem Zusammenfal­ len des Filterbahnmaterials kommen, wodurch der Ab­ strömquerschnitt in unerwünschter Weise verkleinert wird. Außerdem kommt es zu einem regellosen Zusammen­ fallen der Falten bei einem unter großer Druckdiffe­ renz stehenden ringförmigen Filterkörper.Such a filter body is from DE-PS 12 48 618 known. The beads are shaped there that with filter material webs lying one on top of the other Flow spaces of the same shape on the upstream and downstream sides surrender. This results from that known embodiment tion in that one each on the upstream side protruding bead with its long side directly on a Outstanding neighboring bead adjacent to the outflow side. This leads to filter layers lying on top of each other to that in each case at one end of the flow space beads pointing outwards from this flow space to conclude. With the downstream flow mungskanal, that of the inflowing medium, esp especially a liquid that is under pressure, it can at this point easily collapses len the filter web material come, whereby the Ab flow cross section reduced in an undesirable manner becomes. In addition, there is an irregular togetherness  the folds fall under a high pressure difference standing annular filter body.

Hier eine Verbesserung zu erreichen, ist die Aufgabe der vorliegenden Erfindung.The task is to achieve an improvement here of the present invention.

Gelöst wird diese Aufgabe durch eine Ausbildung der Sicken und deren Verteilung über die Filtermaterial­ bahn nach den kennzeichnenden Merkmalen des Patentan­ spruchs 1.This task is solved by training the Beads and their distribution over the filter material track according to the characterizing features of the patent saying 1.

Eine zweckmäßige Ausgestaltung ist Gegenstand des An­ spruchs 2.An appropriate design is the subject of the contract Proverbs 2.

Das Filterbahnmaterial ist quer zu seiner Längser­ streckung in einzelne Falten gelegt. Die W-förmigen Sicken (1) wechseln sich in Längsrichtung der Filter­ bahn in gleichem Abstand alternierend mit V-förmigen Sicken (2) ab. Die einseitige Erhebung (3) der W-för­ migen Sicken (1) sowie die V-förmige Sicke (2) ragen jeweils anströmseitig aus dem Filterbahnmaterial her­ aus. Die Durchströmungsrichtung des Filterbahnmateri­ als geben die Pfeile (4) an.The filter sheet material is placed in individual folds across its longitudinal extension. The W-shaped beads ( 1 ) alternate with V-shaped beads ( 2 ) alternately in the longitudinal direction of the filter web at the same distance. The one-sided elevation ( 3 ) of the W-shaped beads ( 1 ) and the V-shaped bead ( 2 ) each protrude from the upstream side of the filter sheet material. Arrows ( 4 ) indicate the direction of flow of the filter sheet material.

Die Falten sind jeweils so gelegt, daß die abström­ seitigen Erhebungen (5) der Sicke (1) abströmseitig an dem Fuß der V-förmigen Sicke (2) anliegen.The folds are placed so that the upstream elevations ( 5 ) of the bead ( 1 ) abut the downstream side of the V-shaped bead ( 2 ).

Die Anordnung der Sicken (1 und 2) ermöglicht insbe­ sondere auf der Abströmseite zwischen den einzelnen Sicken eine symmetrische Abstützung der einzelnen Filterbahnfaltenabschnitte. Dadurch kann bei Auf­ rechterhaltung einer großen freien Filterfläche ein gegen Kollabieren der Filterbahnabschnitte äußerst sicheres Abstützen erreicht werden. Darüber hinaus steht anströmseitig ein größerer Strömungsraum zur Verfügung als jeweils abströmseitig zwischen den ein­ zelnen Falten.The arrangement of the beads ( 1 and 2 ) allows in particular on the outflow side between the individual beads, a symmetrical support of the individual filter sheet pleat sections. As a result, an extremely safe support against collapse of the filter web sections can be achieved while maintaining a large free filter area. In addition, a larger flow space is available on the upstream side than on the downstream side between the individual folds.

Claims (2)

1. Filterkörper aus einer zick-zack-förmig gefalte­ ten Bahn eines relativ dünnwandigen Filterbahnma­ terials, das sowohl auf der Anströmseite als auch auf der Abströmseite zwischen den Faltenkanten jeweils aus der Bahnebene herausragende längliche Sicken zum gegenseitigen Abstandhalten der Falten aufweist und bei dem zwischen den Sicken der gleichen Faltenfläche unverformte ebene Abschnit­ te bestehen, dadurch gekennzeichnet, daß in Bahnenlängsrichtung verlaufend alternie­ rend "V"- und "W"-förmige Sicken (1 bzw. 2) ange­ ordnet sind, und daß jede W-förmige Sicke (1) aus einer anströmseitig aus der Filtermaterialbahn herausragenden Erhebung (3) besteht, die an jeder ihrer beiden Längsseiten in jeweils eine abström­ seitig aus der Filtermaterialbahn herausragende Erhebung (5) übergeht, wobei die beiden abström­ seitigen Erhebungen (5) jeweils gleich hoch sind, und daß ferner die V-förmigen Sicken (2) ledig­ lich anströmseitig aus der Filtermaterialbahn herausragen, wobei die Spannweite zwischen den V- Schenkeln beim Übergang in die ebene Filterbahn kleiner oder gleich der maximalen Spannweite zwi­ schen den langen Schenkeln der W-förmigen Sicke ist und daß die Faltenlinien so angebracht sind, daß die Sicken (1, 2) jeweils symmetrisch aufein­ ander zu liegen kommen.1.Filter body made of a zigzag-shaped pleated web of a relatively thin-walled Filterbahnma material, both on the inflow side and on the outflow side between the fold edges, each of which has protruding elongated beads to keep the folds apart and in which between the Beads of the same fold surface undeformed flat sections exist, characterized in that "V" and "W" -shaped beads ( 1 and 2 ) are arranged alternately in the longitudinal direction of the web, and that each W-shaped bead ( 1 ) consists of a protrusion from the filter material web protruding elevation ( 3 ), which merges on each of its two long sides into a protrusion protruding from the filter material web ( 5 ), the two outflow-side elevations ( 5 ) are each of the same height, and that furthermore, the V-shaped beads ( 2 ) protrude from the filter material web on the inflow side only en, the span between the V-legs at the transition to the flat filter web is less than or equal to the maximum span between the long legs of the W-shaped bead and that the fold lines are attached so that the beads ( 1 , 2 ) each come to rest symmetrically on top of each other. 2. Filterkörper nach Anspruch 1, dadurch gekennzeichnet, daß anströmseitig die V- und W-Sicken jeweils gleich hoch aus der Filtermaterialbahn herausra­ gen.2. Filter body according to claim 1, characterized, that the V and W beads on the upstream side out of the filter material web at the same height gene.
DE3914409A 1989-04-29 1989-04-29 Resisting collapse of thin corrugated filter strips - by relative positioning of V and W=section beads Withdrawn DE3914409A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3914409A DE3914409A1 (en) 1989-04-29 1989-04-29 Resisting collapse of thin corrugated filter strips - by relative positioning of V and W=section beads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3914409A DE3914409A1 (en) 1989-04-29 1989-04-29 Resisting collapse of thin corrugated filter strips - by relative positioning of V and W=section beads

Publications (1)

Publication Number Publication Date
DE3914409A1 true DE3914409A1 (en) 1990-11-15

Family

ID=6379893

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3914409A Withdrawn DE3914409A1 (en) 1989-04-29 1989-04-29 Resisting collapse of thin corrugated filter strips - by relative positioning of V and W=section beads

Country Status (1)

Country Link
DE (1) DE3914409A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730512A1 (en) * 1995-02-10 1996-08-14 Neveux Francois Moulded plates support filter sheet for water leaving a septic tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730512A1 (en) * 1995-02-10 1996-08-14 Neveux Francois Moulded plates support filter sheet for water leaving a septic tank

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination