EP2694183A2 - Support de filtration à précouche et procédé de fabrication de supports de filtration à précouche - Google Patents

Support de filtration à précouche et procédé de fabrication de supports de filtration à précouche

Info

Publication number
EP2694183A2
EP2694183A2 EP12735445.4A EP12735445A EP2694183A2 EP 2694183 A2 EP2694183 A2 EP 2694183A2 EP 12735445 A EP12735445 A EP 12735445A EP 2694183 A2 EP2694183 A2 EP 2694183A2
Authority
EP
European Patent Office
Prior art keywords
precoat
frame
fabric
metal
anschwemmunterlage
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Withdrawn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
EP12735445.4A
Other languages
German (de)
English (en)
Inventor
Thomas Schulze
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.)
Paul GmbH and Co KG
Pohl GmbH and Co KG
Original Assignee
Paul GmbH and Co KG
Pohl GmbH and Co KG
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 Paul GmbH and Co KG, Pohl GmbH and Co KG filed Critical Paul GmbH and Co KG
Publication of EP2694183A2 publication Critical patent/EP2694183A2/fr
Withdrawn legal-status Critical Current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
    • B01D39/10—Filter screens essentially made of metal
    • B01D39/12—Filter screens essentially made of metal of wire gauze; of knitted wire; of expanded metal
    • 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
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/086—Filter cloth, i.e. woven, knitted or interlaced material of inorganic material

Definitions

  • the present invention is concerned with precoat underlays for frame filters and a particular method of manufacturing them.
  • the invention is concerned with frame filters comprising this precoat backing and the replacement of cellulosic / diatomaceous earth layers in the precoat filtration on frame filters.
  • precoat backing is often applied as the filtration medium to a frame.
  • frame filters in particular those which are used for deep or precoat filtration, usually contain as a precoat filter layers, which are made of textile cloths or cellulose / diatomaceous earth layers.
  • the frame with its chambers forms the holder.
  • the precoat pad serves as a filter medium, which allows the structure of the filtering filter cake on the precoat pad.
  • the solids to be deposited either themselves form a permeable filter cake or a filter aid such as e.g. Diatomaceous earth or perlite used.
  • the precoat pad is usually inserted between the frames of the frame filter and the frame package is hydraulically pressed.
  • a disadvantage of such frame filters is that no completely leak-free sealing of the filter chamber is achieved to the outside by the compression of the previously used Anschwemmunterlagen at the edge of the frame.
  • a precoat pad which comprises a fabric of carbon or glass fibers, a metal fabric or a perforated metal plate.
  • This metal mesh or the perforated metal plate is preferably made of stainless steel, but may generally consist of all metal-containing materials.
  • the mesh sizes or hole diameters vary depending on the application. The person skilled in the art knows which dimensions of these openings in the precoat backing are necessary or suitable for which application. Preferably, the maximum dimension of these openings is 1 cm.
  • the metal fabric preferably consists of metal wires or metal strips which are intermeshed or otherwise cross-fastened.
  • the perforated metal plate is preferably made of a compact metal plate into which Holes have been introduced. It is also possible to combine these two types of construction.
  • the metal mesh is preferably arranged in the frame of a frame filter.
  • the blank of the metal fabric is preferably identical to the previously used filter layers of textile wipes or cellulose / diatomaceous earth layers.
  • a rectangular blank is used, which is placed over a filter chamber and covers it on the front and back.
  • the precoat pad has a width of approximately 1010 mm and a length of approximately 2020 mm.
  • the metal fabric in the edge region of a seal preferably a plastic seal on.
  • a leak-free sealing of the filtrate is achieved.
  • the tightness of the later frame filter is thereby improved in an advantageous manner.
  • Plastics that are thermally deformable and "flow" into the fabric are particularly suitable for this plastic seal, which has the advantage that the meshes are sealed and crossflow is no longer possible, which can cause a leakage.
  • the plastic seal is firmly and tightly connected to the filtered medium with the edge region of the metal fabric.
  • it is used as a strip on the tissue be ironed or melted in the edge area.
  • Further preferred methods are gluing, folding over the edge region, pressing, in particular by means of rails, applying a liquid, but crosslinking or hardening plastic, eg silicone, in a mold together with the metal fabric.
  • the sealing of the metal fabric by the plastic coating is so connected to the metal fabric, that in the edge region of the metal fabric, the plastic is melted by a heating press into the fabric.
  • the edge region of the precoat pad provided with the seal is designed such that it has at least one alignment element.
  • This alignment element is preferably at least one groove and / or at least one spring.
  • the alignment element is arranged on the bottom and / or top of the precoat backing and preferably has a triangular, quadrangular, polygonal or rounded cross-section.
  • the alignment element consists of the sealant or coated with sealant and specially shaped Anschwemmunterlage.
  • the dimensions of the alignment elements are in the range mm or cm.
  • the height, or the depth of an alignment element is more than 1 mm, in particular more than 4 mm.
  • this alignment element is arranged on at least two opposite edges of the precoat pad or completely circumferentially.
  • each of the precoat pads has a seal on its edge region, in particular of the same material in each case, preferably a rubber-like plastic.
  • each Anschwemmunterlage and one of the frame on an alignment element in this edge region, and on the underside and the other frame each have a precise negative of this alignment element, so that the top of a Anschwemmunterlage fit with the overlying and underlying Anschwemmunterlage or Frame is.
  • FIG. 1A and 1B show schematically the structure of a precoat pad according to the invention.
  • FIG. 2 shows the introduction of a antislip underlay according to the invention into a frame filter.
  • FIGS. 3a to 3d show possible formations of the edge regions with alignment elements
  • Figure 4 shows the edge region of an arrangement of two arranged in a frame provided with alignment elements Anschwemmunterlagen.
  • FIG. 1A shows a metal fabric and FIG. 1B shows a perforated metal plate as a permeable part of the precoat backing (1). Both Anschwemmunterlagen have at their edge the optional plastic seal (2).
  • FIG. 2 shows in side view a part of a precoat backing with a metal fabric as a permeable part of the precoat backing (1), which is fixedly connected here to the plastic seal (2) in the edge region.
  • the precoat pad is firmly clamped in the frame (3) of a frame filter.
  • FIGS. 3a to 3d show a preferred selection of alignment elements (4). They can be present as springs or grooves, as shown in FIGS. 3 a and 3 b, or as a spring-groove combination, as shown in FIG. 3 c.
  • the figures 3a to 3c show only a section of the edge region.
  • a formation of spring on the one hand and groove on the other side of a precoat pad is easy to achieve by the sealant is formed alone or together with the precoat, as can be seen in Figure 3d.
  • the alignment elements provide both a simple and accurate fit and an improved seal since the alignment elements provide the filtered media with an additional barrier oppose this way.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Insulated Metal Substrates For Printed Circuits (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un support de filtration à précouche pour filtres à cadres, comprenant au moins un tissu métallique et/ou au moins une plaque métallique perforée.
EP12735445.4A 2011-04-04 2012-04-04 Support de filtration à précouche et procédé de fabrication de supports de filtration à précouche Withdrawn EP2694183A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110015960 DE102011015960A1 (de) 2011-04-04 2011-04-04 Anschwemmunterlage und Herstellungsverfahren für Anschwemmunterlagen
PCT/EP2012/001493 WO2012136361A2 (fr) 2011-04-04 2012-04-04 Support de filtration à précouche et procédé de fabrication de supports de filtration à précouche

Publications (1)

Publication Number Publication Date
EP2694183A2 true EP2694183A2 (fr) 2014-02-12

Family

ID=46514290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12735445.4A Withdrawn EP2694183A2 (fr) 2011-04-04 2012-04-04 Support de filtration à précouche et procédé de fabrication de supports de filtration à précouche

Country Status (3)

Country Link
EP (1) EP2694183A2 (fr)
DE (1) DE102011015960A1 (fr)
WO (1) WO2012136361A2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1905818A1 (de) * 1969-02-06 1970-09-03 Steinmueller Gmbh L & C Anschwemmfilterplatte
CH608975A5 (en) * 1976-09-30 1979-02-15 Bopp & Co Ag G Metal filter cloth, in particular for precoated filters
DE19804493A1 (de) * 1998-02-05 1999-08-12 Schenk Filterbau Gmbh Filtermedium für die Fest/Flüssig-Trennung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563828A (en) * 1968-06-14 1971-02-16 Dennis A G Marshall Fluid filters
DE2166431C2 (de) * 1971-11-09 1982-02-25 Noel, Marquet & Cie. S.A., Eupen Filter, bestehend aus einem flexiblen, flächigen Filtermedium
GB8418658D0 (en) * 1984-07-21 1984-08-22 Thule United Ltd Filtering screens
DE4123746A1 (de) * 1991-07-15 1993-01-21 Mannesmann Ag Verwendung eines mikrogelochten metallbandes als filtermittel
WO1994007588A1 (fr) * 1992-09-25 1994-04-14 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Filtre resistant a la chaleur
GB9404071D0 (en) * 1994-03-03 1994-04-20 United Wire Ltd Improved sifting screen
DE102007003611A1 (de) * 2007-01-18 2008-07-24 Haver & Boecker Ohg Stützgewebe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1905818A1 (de) * 1969-02-06 1970-09-03 Steinmueller Gmbh L & C Anschwemmfilterplatte
CH608975A5 (en) * 1976-09-30 1979-02-15 Bopp & Co Ag G Metal filter cloth, in particular for precoated filters
DE19804493A1 (de) * 1998-02-05 1999-08-12 Schenk Filterbau Gmbh Filtermedium für die Fest/Flüssig-Trennung

Also Published As

Publication number Publication date
WO2012136361A2 (fr) 2012-10-11
DE102011015960A1 (de) 2012-10-04
WO2012136361A3 (fr) 2012-12-06

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