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WO2019011362A1 - Tissu, élément filtrant, filtre et leur utilisation - Google Patents

Tissu, élément filtrant, filtre et leur utilisation Download PDF

Info

Publication number
WO2019011362A1
WO2019011362A1 PCT/DE2018/000208 DE2018000208W WO2019011362A1 WO 2019011362 A1 WO2019011362 A1 WO 2019011362A1 DE 2018000208 W DE2018000208 W DE 2018000208W WO 2019011362 A1 WO2019011362 A1 WO 2019011362A1
Authority
WO
WIPO (PCT)
Prior art keywords
fabric
threads
filter
filter element
diameter
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/DE2018/000208
Other languages
German (de)
English (en)
Inventor
Peter Wirtz
Markus KNEFEL
Daniel DRESCHERS
Dominik HERPER
Christoph LÄPPCHEN
Peter Henseler
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.)
GKD Gebr Kufferath AG
Original Assignee
GKD Gebr Kufferath AG
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 GKD Gebr Kufferath AG filed Critical GKD Gebr Kufferath AG
Publication of WO2019011362A1 publication Critical patent/WO2019011362A1/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
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/43—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with differing diameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1233—Fibre diameter
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/20—Metallic fibres
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/04—Filters

Definitions

  • the invention relates to a fabric, a filter element, a filter and a use of such a fabric, such a filter element or such a filter.
  • the invention relates to fabrics which serve to give other filtration materials sufficient mechanical stability, preferably also in the deformed and / or folded state.
  • the applications are in particular the filtration of liquids and in particular of hydraulic fluids. This raises the object that the tissue, in particular in the deformed and / or folded state, on the one hand a high flow ("drainage in a fold") should allow and on the other hand provide an even finer filter medium sufficient support surface available Fabric also made high stability requirements.
  • Filter elements produced with such fabrics are used in particular in hydraulic systems, as used for example in self-propelled machines, for example construction machines or agricultural machines, or even in tooling and processing machines, for example injection molding machines.
  • the hydraulic systems must meet very high demands on the cleanliness of the hydraulic fluid in order to be able to fulfill their function without disruption and with little wear over long periods of operation.
  • the filter element is flowed through by the hydraulic fluid, wherein a pressure difference is established between the raw side and the clean side of the filter element.
  • the filter material is supported by a support structure.
  • the support structure is subject to a strong pressure swing load, which can result in damage to the support structure.
  • tissue layers can press against each other in such a way that the flow of liquid is impaired. This is the case in particular if, for example in the case of a folded fabric, tissue layers abut one another directly or with filter material lying therebetween.
  • the object of the present invention is therefore to propose a fabric, a filter element and a filter, and a use thereof, which also ensure a good flow through when tissue areas are pressed against one another.
  • the chain has a plurality of smaller diameter threads between larger diameter threads.
  • the chain between threads with a larger diameter each have more than one thread, in particular two to five threads with a smaller diameter.
  • the shot has a share of more than 20% of threads made of plastic.
  • a particularly simple construction of the fabric is achieved when the threads in the shot predominantly have the same diameter.
  • all threads in the weft may have the same diameter.
  • tissues are particularly suitable whose filaments have a diameter in the range between 50 ⁇ and 500 ⁇ .
  • an object of the invention is a filter element comprising such a fabric.
  • This filter element can also have a plurality of such fabric stacked one above the other.
  • the stacked fabrics are stacked such that the threads are arranged offset from each other with a larger diameter.
  • the filter element has a zigzag-folded fabric.
  • a filter material can be arranged, which is made for example of a nonwoven material.
  • a simple construction of a filter element provides that the zigzag folded tissue is arranged as a ring, so that the fabric is folded in a star shape. Such fabrics are also referred to as "pleated”.
  • the metal threads run parallel to the folds of the fabric.
  • the filter material may be a fine filter layer covering the support structure.
  • a fine filter layer for example, a non-woven or cellulose paper can be used.
  • a protective layer covering the fine filter layer on the clean side can likewise be designed in the form of a nonwoven.
  • one or more prefilter layers can cover the fine filter layer, and the prefilter layer can also be formed in the form of nonwovens and / or cellulose papers.
  • the filter material is covered on the raw side by a sieve-like protective fabric.
  • a fabric according to the invention in particular as a supporting fabric, is also used as the sieve-like protective fabric.
  • FIG. 1 is a plan view of a fabric
  • FIG. 2 shows a section through two layers of the fabric shown in FIG. 1,
  • Figure 3 is a plan view of a deformed fabric layer, as it is typically deformed and
  • Figure 4 shows a filter with such a fabric.
  • the darker lines show threads of plastic and the lighter lines show threads of metal. Therefore, the cut filaments shown in Figs. 1 and 3 are thick and thin filaments of plastic, while the filaments shown therein as transverse filaments are made of metal. These transverse threads can also be partially replaced by plastic threads.
  • Figure 1 shows thick plastic threads 1 to 5 with a diameter of 0.35 mm and in between each three thinner plastic threads 6 to 9. These thinner plastic threads have a diameter of 0.25 mm.
  • the weft is formed by metal threads 10, 11, 12 (numbered only by way of example) with a diameter of 0.15 mm. This twill weave makes it possible to fold the fabric in the direction of the plastic threads, ie in the warp direction, in a simple manner.
  • FIG. 1 An example of a multilayer arrangement of the fabric shown in FIG. 1 is shown in FIG. There is in each case a thick plastic thread 1, 2 between two thin plastic threads 6, 7. [28] The folding of such a fabric 13 is shown in Figure 3. There, a fleece 15 is placed over the fabric 13, which rests directly on the fabric 13 in practice, so that the fabric 13 acts as a support structure and the nonwoven 15 as a filter material.
  • a filter element generally designated by the reference numeral 20 is shown schematically. It comprises a cylindrical support tube 22, which is penetrated in the radial direction by a plurality of flow openings 23. In the circumferential direction, the support tube 22 is surrounded by a multilayer filter bellows 25, which is shown in Figure 5 for clarity partially in the manner of an exploded view.
  • the filter bellows 25 are folded in a star shape by folds 27 running parallel to the longitudinal axis of the support tube 22 in such a way that along their circumference radially outer fold tips 28 and radially inner fold bases 29 follow one another alternately.
  • the filter bellows 25 has a three-layered filter material 32 with a fine filter layer in the form of a fleece 34, ie in the illustrated embodiment in the radial direction from outside to inside, on the raw side by a prefilter fleece 37 and on the clean side by a protective fleece 38 is covered.
  • the nonwovens can be made, for example, from a plastic or glass fiber material.
  • the filter material 32 is supported on the clean side on a support fabric 40, which rests flat against the protective fleece 38 of the filter material 32 and is also folded in a star shape.
  • the support fabric 40 in turn is supported in the flow direction 36 in the region of the fold bases 29 on the support tube 22.
  • the structure of the supporting tissue 40 corresponds to the tissue shown enlarged in FIG. It is configured in a sieve or lattice fashion and is formed with warp threads 42 made of plastic material and weft threads 44 made of metal.
  • the plastic material used here is preferably polyester, in particular PET, while the weft threads 44 are made of a metallic material, for example a stainless steel.
  • the support fabric 40 is oriented such that the metallic weft threads 44 extend parallel to the pleats 27, while the made of plastic warp threads 42 are aligned perpendicular to the pleats 27.
  • the metallic weft threads 44 are consequently subject to virtually no bending stress when folding the filter bellows 25 and during the filtration of the liquid.
  • their use ensures that due to charge separation processes within the filter material 32 occurring electrical charges can be dissipated. This is particularly important when the support tube 22 is made of plastic.
  • the filter material 32 is covered by a sieve-shaped protective fabric 46.
  • a metal mesh can be used.
  • the protective fabric 46 is identical to the supporting fabric 40 and also comprises plastic and metal filaments.
  • the filter bellows 25 is covered by an upper and a lower end cap 48 and 50, which are glued to the filter bellows 25.
  • the lower end cap 50 forms a flow-tight closure of the filter element 20, while the upper end cap 48 has a central outlet opening 52.
  • the liquid to be filtered is supplied to the outside of the filter element 20, so that it can flow through the filter bellows 25 radially from outside to inside and can reach the interior of the support tube 22 via the flow openings 23. Subsequently, the filtered fluid flows in the longitudinal direction of the support tube 22 to the outlet 52 and Uber out of the filter element 20 back out.
  • the warp threads 42 and weft threads 44 have different material thicknesses.
  • warp yarns having a diameter of about 0.25 mm with intervening warp with a diameter of about 0.35 mm proved to be particularly advantageous, while for the metallic weft threads 44 preferably a diameter of about 0.15 mm to 0.17 mm is provided ,
  • the mesh size of the support fabric 23 is about 0.6 mm to about 1.0 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne un tissu, un élément filtrant, un filtre et une utilisation d'un tissu, d'un élément filtrant ou d'un filtre de ce type, la chaîne présentant des fils de différents diamètres.
PCT/DE2018/000208 2017-07-10 2018-07-10 Tissu, élément filtrant, filtre et leur utilisation Ceased WO2019011362A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102017006478 2017-07-10
DE102017006478.4 2017-07-10
DE102017010756.4 2017-11-21
DE102017010756.4A DE102017010756A1 (de) 2017-07-10 2017-11-21 Gewebe, Filterelement, Filter und Verwendung davon

Publications (1)

Publication Number Publication Date
WO2019011362A1 true WO2019011362A1 (fr) 2019-01-17

Family

ID=64666115

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2018/000208 Ceased WO2019011362A1 (fr) 2017-07-10 2018-07-10 Tissu, élément filtrant, filtre et leur utilisation

Country Status (2)

Country Link
DE (1) DE102017010756A1 (fr)
WO (1) WO2019011362A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1436062A1 (fr) 2001-10-16 2004-07-14 ARGO-HYTOS GmbH Element filtre pourvu d'un tissu de support electro-conducteur
WO2005035846A1 (fr) * 2003-09-16 2005-04-21 Mühlen Sohn GmbH & Co. Courroie tissee conçue pour une machine a confectionner le carton ondule
WO2007050111A2 (fr) * 2005-10-25 2007-05-03 Derrick Corp Toile metallique a diametres multiples

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9811089D0 (en) * 1998-05-23 1998-07-22 Jwi Ltd Warp-tied composite forming fabric
DE102010017055A1 (de) * 2010-05-21 2011-11-24 Andritz Technology And Asset Management Gmbh Blattbildungssieb
DE202013003527U1 (de) * 2013-04-15 2013-04-23 Sefar Ag Filtermedium
EP2848294B1 (fr) * 2013-09-11 2015-11-18 Sefar AG Dispositif de filtration et élément de filtration pour le traitement d'un liquide de rinçage pour un usinage par enlèvement de matière et procédé d'usinage par enlèvement de matière

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1436062A1 (fr) 2001-10-16 2004-07-14 ARGO-HYTOS GmbH Element filtre pourvu d'un tissu de support electro-conducteur
WO2005035846A1 (fr) * 2003-09-16 2005-04-21 Mühlen Sohn GmbH & Co. Courroie tissee conçue pour une machine a confectionner le carton ondule
WO2007050111A2 (fr) * 2005-10-25 2007-05-03 Derrick Corp Toile metallique a diametres multiples

Also Published As

Publication number Publication date
DE102017010756A1 (de) 2019-01-10

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