• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Wire cloth unit (1) and filter unit comprising a wire cloth unit (1) with a wire cloth layer (2) of warp wires (3) and weft wires (4), wherein the warp wires (3) and the weft wires (4) form fabric stitches and span a fabric surface. A pore size (7) of some of the fabric meshes of the wire mesh unit is changed by a coating (8).
    公开号:CH709939A2
    申请号:CH01032/15
    申请日:2015-07-14
    公开日:2016-01-29
    发明作者:Frank Meyer；Detlef John
    申请人:Haver & Boecker Ohg；
    IPC主号:
    专利说明:

    The present invention relates to a wire mesh unit having at least one wire fabric layer of warp wires and weft wires, wherein the warp wires and weft wires form fabric stitches and span a fabric surface.
    In particular, the inventive wire mesh unit is used as a filter unit for filtering and preferably for fine filtration. For example, a wire mesh unit according to the invention can be used for filtering the oil flow for an internal combustion engine. It is also possible to use for the filtration of exhaust gases from, for example, combustion processes.
    The use in this area requires a seal at the edge of the filter or the filter unit to exclude cross flows or leakage. For this purpose, wire mesh and gaskets are already used together with a holder in the composite. The preparation of such a filter unit is therefore expensive.
    Typically, the field of application of a wire mesh unit according to the invention in the field of fine filtration for filtering with pore sizes is starting at about 10 or 20 micrometers and ending at 300 micrometers or 400 micrometers.
    It is therefore the object of the present invention to provide a wire mesh unit available, with a simpler production of a filter unit is possible.
    This object is achieved by a wire mesh unit having the features of claim 1 and by a filter unit having the features of claim 19. Preferred developments are subject of the dependent claims. Further advantages and features of the present invention will become apparent from the general description and the description of the embodiments.
    An inventive wire mesh unit comprises at least one wire fabric layer of warp wires and weft wires. The warp wires and weft wires form fabric stitches and stretch a fabric surface. In this case, a pore size of at least some of the fabric meshes of the wire mesh unit is changed by a coating.
    The inventive wire mesh unit has many advantages. A considerable advantage is that the pore size of the fabric meshes can be specifically influenced after weaving and thus defined. So it is possible that even with the use of relatively thick warp and weft wires very fine and fine pores can be set without using correspondingly fine wires.
    The wire fabric layer or a wire fabric layer of an inventive wire mesh unit can have a variety of weaves. The fabric may have open meshes and thus have open through openings perpendicular to the surface. But it is also possible that the stitches are tightly beaten. The wire fabric layer can be designed as a weave fabric, resulting in only skew open pores, while the wire fabric layer is opaque perpendicular to the fabric surface. This means that the mesh size can be reduced to zero. Due to the three-dimensionality of a wire mesh, open pores with a small opening width also result in a turgid tissue, but the open pores are then oriented obliquely to the tissue surface.
    In many cases, a large open area or a high proportion of the open area on the filter surface is desired for filter applications. A wire thickness of the warp wires and the weft wires can be basically arbitrary. Possible are the same and different strength warp wires and weft wires.
    Particularly preferred in the inventive wire mesh unit, the pore size of only some of the fabric meshes of the wire mesh unit is selectively changed. In this case, the pore size of at least some of the fabric meshes can be deliberately reduced to zero, so that a flow is prevented there.
    It is also preferred that the pore size of at least some tissue meshes is changed differently than the pore size of other tissue meshes. For example, some pores may be provided with a coating in a targeted manner, while the wires of another fabric mesh remain uncoated, so that the original pore size is retained. But it is also possible that the wires are provided on some fabric meshes with a stronger coating than the wires of another fabric mesh.
    Particularly preferred for coating a galvanic process is used. This means that the coating is preferably formed as a galvanic coating. However, another type of coating, for example a color coating or another plastic coating or the like, is also possible.
    A galvanic coating offers significant advantages, since the thickness of the coating can be adjusted very accurately and finely by the duration of the galvanic treatment and the other conditions. As a result, for example, in the case of particularly fine woven fabric layers, the mesh size can be specifically selected from e.g. 20 microns to 15 microns or the like can be reduced. It is also possible to set the pore size of a fabric mesh with an original mesh size of 70 micrometers specifically to 65 micrometers or 60 micrometers or the like.
    Particularly preferably, the coating is selectively applied to the tissue surface or it is the coating selectively formed on the tissue surface. Preferably, the coating is applied more strongly on at least one first section than on a second section. In this case, no coating can be provided in the second section. It is also possible that the wire fabric layer has a total of a first coating layer and that portions of the wire fabric layer have a second selectively applied coating layer.
    In particular, the coating is applied only in sections on the wire fabric layer. This results in many possibilities, since sections of the wire fabric layer have different pore sizes.
    In particularly preferred developments, at least some tissue stitches are closed by coating material. Particularly preferably, the coating material is applied in such a manner and thickness that the coating allows a seal. Thereby, the coating in the first section can provide a sealing function through the wire mesh unit. The coating can also prevent cross flows. The coating can also allow a dense contact with another component in the transverse direction.
    In particular, the fabric meshes are closed by the coating, so that there is a pore size of 0 there. For example, on a particular section of the woven fabric layer, the pore size may be reduced by a e.g. Galvanic coating can be adjusted specifically and on another section of the wire mesh unit, the pores are closed by the coating, so that certain filter areas or filter sections arise.
    In preferred embodiments, the wire mesh unit is compressed in at least one area. For example, the wire mesh unit can be compacted by rolling, local pressing and / or calendering. It is possible and preferred for the local densification of the wire mesh unit in a region to locally close the pores there. Thus, it is possible that after the weaving process and after the subsequent coating still a small pore size remains, which is then reduced in the compacted area such that in this area, the wire mesh unit provides a closed surface. By means of such measures, the wire mesh unit can on the one hand provide one or more filter sections and at the same time provide a flow-tight receiving area or receiving section, with which the wire mesh unit can be tightly fastened.
    In preferred developments of the compacted area is in particular punched, partially pressed or pressed and / or provided with the coating. In this case, the coated area can be post-compacted or the coated area is punched or partially pressed. The compressed area can serve as a seal.
    In preferred embodiments, the coating at least partially on two or more coating layers. Thus, e.g. central filter area only have a coating layer, while a sealing portion has a plurality of coating layers, so that there the pores of the fabric stitches are completely closed.
    In particular, the wire fabric layer on the fabric surface on at least one filter section. Also several filter sections are possible. Particularly preferably, the wire mesh unit has pores opened on the filter section and pores formed on a holding section adjacent to the filter section. It is possible and preferred that the holding portion surrounds the filter section.
    Such a configuration enables a flexible usable wire mesh unit with a simple production, in which both a filter section is formed on the fabric surface as well as the holding section necessary for holding, which provides a fluidically dense tissue section available.
    Preferably, at least one recess for attachment or alignment of the wire fabric layer is provided on the fabric surface.
    The wire mesh unit may have a provided by the coating material reservoir, which may serve as a solder reservoir for contacting other components, for example. For example, such a material for soldering the wire fabric layer may be provided with another electrical component.
    In preferred developments, the coating has at least one coating layer, which consists at least essentially of catalytic materials. In particular, the or consists of at least one coating layer of nickel, chromium, gold, silver, copper, titanium, platinum, palladium or tin. Also possible is a combination of the listed materials.
    A thickness of the coating is preferably between 1 micrometer and 500 micrometers, and more preferably between 1 micrometer and 200 micrometers.
    In all cases, at least some wires of the wire fabric layer preferably consist of at least one metal. Particularly preferably, all devices of the wire fabric layer are made of metal. But it is also possible that at least some wires of the wire fabric layer consist of a non-metal. Preferably, the non-metal wires have an electrically conductive surface coating. Then the wires made of non-metal can also be provided with a galvanic surface coating. The cross-section of the wires can be round or square or otherwise designed. In principle, any contours are possible. For optimally reproducible filter conditions, homogeneous wires are preferably used over their length.
    It is possible and preferred that the wire mesh unit comprises a layer composite of at least two wire fabric layers. The two wire fabric layers can be connected to each other via an example galvanic coating. The wire fabric layers of a layer composite can have different tissue parameters and have different mesh sizes, wire diameters, pitches, etc. Two wire cloth layers can also be made of different materials. The orientation of two wire fabric layers to each other may be different. For example, the warp wires of two wire cloth layers may be aligned parallel to each other or at any angle to each other.
    In all cases, at least some wires may consist of monofilaments or multifilaments.
    With the present invention, the pore size is specifically reduced by a galvanic coating of the tissue. Partly enough material is applied that it is possible to create a sealing surface by compacting. As a result, on the one hand, a fine filter surface is made available and, on the other hand, a dense receiving surface can be provided for the wire mesh unit. The cost of producing a filter unit is considerably reduced, since the wire mesh unit at the same time recording and filter.
    By coating the wire fabric layer, the material properties of the wires of the fabric are not fundamentally changed, but the filter properties are set specifically. In this case, by the coating also e.g. a corrosion protection can be provided. An additional separate sealing lip, which in the prior art often has to be injection-molded onto the fabric with plastic or the like, can be dispensed with in the present invention, since the wire mesh unit can be made locally dense. The wire mesh unit can be coated with a variety of metals one or more layers.
    By applying the coating, the pore size can be reduced specifically and reproducibly, for example, to 5 microns. By an edge compaction, the pore is then completely closed. Preferably, the wire fabric layer is first prepared and then in particular galvanically coated. Thereafter, pressing or calendering or the like may be performed to seal holding portions or the like.
    The application of such a filter unit lends itself, for example, in the oil flow of the engine to reliably filter the fuel.
    The selective coating of a woven fabric layer on the fabric surface allows the use as a filter unit, in which a separate holder and a separate seal can be saved.
    By a galvanic surface coating and the stability of the wire fabric layer can be increased. For example, a nickel layer may be applied to increase the stability and then a copper layer may be applied over the pores e.g. to selectively seal after a pressing operation.
    Preferably, a coating layer is selectively applied, which has such a softness that after a pressing operation, the coating layer allows a tight seal. Then cross flows are reliably prevented. As a result, the wire mesh unit can be used directly as a filter unit. The wire mesh unit provides the holder, receptacle and filter. A separate seal is not necessary.
    A filter unit according to the invention consists of a wire mesh unit with at least one wire fabric layer of warp wires and weft wires, wherein the warp wires and weft wires form fabric stitches and span a fabric surface. In this case, a pore size of at least some of the fabric meshes of the wire mesh unit is changed by a coating.
    The wire cloth layer of the filter unit has, in particular, at least one filter section on the fabric surface. Open pores are preferably provided on the filter section. The pores are in particular formed closed on a holding section surrounding the filter section. The holding section serves to hold the filter unit. On the tissue surface, at least one recess for attachment or alignment of the filter unit is preferably provided.
    In particular, the holding section may be compressed in whole or in some areas.
    In developments, the wire mesh unit is configured according to one or a combination of several of the previously described embodiments.
    The use of the invention is also possible to provide a wire mesh unit with a defined modified pore size available. The pore size depends on the wire diameters of the warp and weft wires. Thus, e.g. no fine pores can be achieved with thick wires, because the woven wire can only be deformed to a limited extent. In an open uncoated fabric, the mesh size can not be regularly smaller, such as the diameter of the woven wire (warp or weft wire).
    Thus, for the production of fine wire mesh units very thin wires are usually used to provide a high open filter area at defined pore sizes available. For example, wire meshes with a mesh size of 20 microns and a wire diameter of 20 microns have a mesh count of 635. This means that there are 635 warp and weft wires per inch of length or width of wire mesh. The weaving of such a fine wire mesh is very expensive and takes a lot of time. Therefore, conventional fine and finest wire mesh are not cheap to manufacture. If the filtration fineness is to be even lower, even thinner wires with a diameter of 16 μm or, for example, can be used. 14 microns are used. As a result, the production cost is increased again. In addition, the manufacturing process is much more error-prone, since, for example, with a fabric width of only 100 mm already 2500 individual warp wires must be performed exactly defined for loom. If only a single wire is incorrectly threaded or guided, the fabric has a continuous weaving error and may possibly be unusable. Here, the pore size can be defined with the invention defined reduced without changing the thickness or thickness of the warp wires and the weft wires. The invention also makes it possible to provide a wire mesh unit with which it is possible to increase the filter fineness of ultrafine fabrics.
    Further advantages and features of the present invention will become apparent from the embodiments, which are explained below with reference to the accompanying figures.In the figures show:<Tb> FIG. 1 <SEP> is a schematic top view of a wire mesh unit designed as a filter unit;<Tb> FIG. 2 <SEP> is a schematic cross section through the wire mesh unit according to FIG. 1;<Tb> FIG. 3 <SEP> a highly schematic cross section through a wire fabric layer;<Tb> FIG. 4 <SEP> another highly schematic cross section through another wire fabric layer;<Tb> FIG. 5 <SEP> is a highly schematic plan view of a wire mesh unit; and<Tb> FIG. 6 <SEP> another schematically represented wire mesh unit with two wire cloth layers.
    With reference to the figures, embodiments of the invention are explained in the following, wherein Fig. 1 is a schematic plan view of a formed as a filter unit 100 wire cloth unit 1. The filter unit 100 or the wire mesh unit 1 here consists of a wire fabric layer 2, which provides a first section 11 and a second section 12 on the fabric surface 6.
    The wire cloth unit 1 has a filter portion 22 as a first portion 11 and a holding portion 21 as a second portion 12. Here, the wire cloth unit 1 consists of the holding section 21 and the filter section 22. In the holding section 21 here two recesses 16 are introduced to receive the filter unit 100 defined on another component and fasten there by, for example, screws or the like.
    The wire mesh unit 1 has, in principle, an initially homogeneous wire fabric layer 2, which over the entire surface of the fabric surface 6 consists of fabric stitches 5, which are formed by warp wires 3 and weft wires 4.
    After weaving the wire cloth layer 2, the wire cloth layer 2 is locally selectively provided with a coating 8 (see Fig. 5) to specifically influence the pore size 7 of the fabric stitches 5 in the first portion 11 and the second portion 12, respectively. Here, so much material is coated in the holding section 21 that after the subsequent compaction process in the second section 12, the pore size 7 is reduced to 0, so that the holding section 21 is fluidically dense.
    Such a filter unit 100 is very advantageous because it consists practically only of a one-piece manufactured component, namely of the wire fabric layer 2, which is selectively coated. Thereafter, the second section is compressed.
    The pores 9 on the filter section 22 are open, while the dashed circled pores 10 are closed in the holding section 21.
    FIG. 2 shows a sectional side view of the filter unit 100 according to FIG. 1. The filter unit 100 consists of a wire mesh unit 1. The portion 12 as a holding portion 21 is compressed, so that a thickness of the wire cloth layer 2 is reduced in the portion 12 μm, preferably 10% to 40%. By compacting the sealing effect is reinforced again. In addition, the rigidity in the section 12 is increased. At least one recess 16 may be formed on the holding section 21 in order to facilitate screwing or fastening to other components. Two recesses 16 may serve to determine the orientation of the filter unit.
    Fig. 3 shows a schematic cross section through a wire fabric layer 2, wherein the warp wires are drawn hatched. In the example shown here, wires 25 of non-metal and wires 26 of metal are provided, which are alternately provided as warp wires. But it is also possible that all warp wires made of metal or possibly also of non-metal. If a galvanic coating is to be applied, it is advantageous if non-metallic wires are first provided with a metallic surface coating.
    In the outer regions of the wire fabric layer 2 shown in FIG. 3 is in each case the second section 12, on which a coating layer 14 has been applied galvanically to the wire fabric layer 2. In the central region, the first section 11 is provided, which serves for example as a filter section 22 and in which open pores 9 are provided. In order to prevent a galvanic coating in the first section, a paint or other mass can be applied there before the galvanic bath, which prevents galvanic deposition.
    FIG. 4 shows a further variant of a wire fabric layer 2, two separate coating layers 14 and 15 being applied as a coating 8 here in the lateral second section 12. Again, the central area is formed with the first portion 11 without coating.
    FIG. 5 shows a highly schematic plan view of a further wire mesh unit 1 according to the invention, which is used as a filter unit 100.
    The wire mesh unit 1 consists of a wire fabric layer 2 comprising warp wires 3 and weft wires 4. In the central area, a first section 11 is provided as a filter section 22. In the filter section 22 5 open pores 9 are provided on the fabric mesh.
    Closed pores 10, which have been closed by the application of the coating 8 and / or by a subsequent aftertreatment, are provided in the holding section 21 surrounding the filter section 22 here.
    As a result, the wire cloth layer 2 serves as a filter layer. The filter unit 100 may be fixed to the holding portion 21 with the holding portion 21 sealed. Another seal is usually not required.
    In Fig. 5, the filter section 22 is shown with two differently shaped pores, namely on the one hand with pores 9, in which the associated fabric mesh is provided with a surface coating with a thickness 18, so that the remaining pore size 7 is set specifically. In addition, the filter section 22 here completely uncoated pores 9, the pore size 7 is correspondingly larger.
    But it is also possible that in the region of the filter portion 22 total no or a lower coating 8 is applied, so that a correspondingly larger pore size 7 remains.
    The individual wires 3, 4 of the wire fabric layer 2 may be formed as monofilaments. But it is also possible that multifilaments 24 are used, as is indicated by way of example in the lower right in Fig. 5. The entire filter surface or the entire wire fabric layer may consist of wires made of multifilaments.
    Finally, FIG. 6 shows a further variant of a wire mesh unit 1 according to the invention, which consists of two wire cloth layers 2. The two wire fabric layers are connected to each other via the coating 8. This results in a layer composite 20. In the central area, a filter section 22 is again provided here, which is surrounded by a holding section 21 towards the edge.
    Overall, the present invention provides a flexibly applicable wire cloth unit 1, which can be used in particular as a filter unit 100.
    LIST OF REFERENCE NUMBERS
    [0064]<Tb> 1 <September> wire mesh unit<Tb> 2 <September> wire mesh Läge<tb> 3 <SEP> wire, warp wire<tb> 4 <SEP> wire, weft wire<Tb> 5 <September> fabric mesh<Tb> 6 <September> tissue surface<Tb> 7 <September> pore size<Tb> 8 <September> Coating<tb> 9 <SEP> Pore, opened<tb> 10 <SEP> pore, closed<tb> 11 <SEP> first section<tb> 12 <SEP> second section<Tb> 13 <September> coating material<Tb> 14 <September> coating layer<Tb> 15 <September> coating layer<Tb> 16 <September> recess<Tb> 17 <September> material reservoir<Tb> 18 <September> thickness<Tb> 19 <September> surface coating<Tb> 20 <September> Location composite<Tb> 21 <September> holding section<Tb> 22 <September> filter section<Tb> 23 <September> filter section<Tb> 24 <September> multifilament<tb> 25 <SEP> wire (nonmetal)<tb> 26 <SEP> wire (metal)<Tb> 100 <September> filter unit
    权利要求:
    Claims (19)
    [1]
    A wire cloth unit (1) having at least one wire cloth layer (2) of warp wires (3) and weft wires (4), the warp wires (3) and the weft wires (4) forming cloth stitches (5) and spanning a fabric surface (6) in that a pore size (7) of at least some of the fabric meshes (5) of the wire mesh unit (5) is changed by a coating (8).
    [2]
    2. wire mesh unit according to claim 1, wherein the coating (8) is formed as a galvanic coating.
    [3]
    3. wire mesh unit (1) according to any one of the preceding claims, wherein the coating (8) on the fabric surface (6) is selectively formed and wherein the coating (8) on at least a first portion (11) is applied more than on a second portion (12).
    [4]
    4. wire mesh unit (1) according to any one of the preceding claims, wherein the coating is applied only in sections on the wire fabric layer (2).
    [5]
    5. Wire mesh unit (1) according to one of the preceding claims, wherein at least some fabric meshes (5) are closed by coating material (13).
    [6]
    6. Wire mesh unit (1) according to one of the preceding claims, wherein the wire mesh unit (2) is compressed in at least one area.
    [7]
    7. wire mesh unit (1) according to any one of the preceding claims, wherein the compressed area is punched, partially pressed or pressed and provided with the coating (8).
    [8]
    8. wire mesh unit according to one of the preceding claims, wherein the coating (8) at least in sections a plurality of coating layers (14, 15).
    [9]
    9. wire mesh unit (1) according to any one of the preceding claims, wherein the wire fabric layer (2) on the fabric surface (6) has at least one filter section (22, 23).
    [10]
    10. wire cloth unit (1) according to any one of the preceding claims, wherein on the filter section (22) open pores (9) and on a filter portion surrounding the holding portion (21), the pores (10) are formed closed.
    [11]
    11. Wire mesh unit (1) according to one of the preceding claims, wherein on the fabric surface (6) at least one recess (16) for fixing or alignment of the wire fabric layer (2) is provided.
    [12]
    12. wire cloth unit (1) according to any one of the preceding claims, comprising a provided by the coating (8) Lötreservoir (17).
    [13]
    13. wire mesh unit (1) according to any one of the preceding claims, wherein the coating (8) has at least one coating layer (14), at least to a substantial extent of catalytic materials and in particular of nickel, chromium, gold, silver, copper, titanium, Platinum, palladium or tin exist.
    [14]
    14. wire mesh unit (1) according to the preceding claim, wherein a thickness (18) of the coating (8) is between 1 micron and 500 microns.
    [15]
    15. Wire mesh unit (1) according to the preceding claim, wherein at least some wires (26) of the wire fabric layer (2) consist of a metal.
    [16]
    16. Wire mesh unit (1) according to one of the two preceding claims, wherein at least some wires (25) of the wire fabric layer (2) consist of a non-metal and / or have an electrically conductive surface coating (19).
    [17]
    17 wire cloth unit (1) according to one of the preceding claims wherein at least two wire fabric layers (2) are connected to a layer composite (20).
    [18]
    18, wire cloth unit (1) according to any one of the preceding claims, wherein at least some wires of monofilaments or multifilaments (24).
    [19]
    19. Filter unit (100) consist of a wire mesh unit (1) with at least one wire fabric layer (2) of warp wires (3) and weft wires (4), wherein the warp wires (3) and the weft wires (4) form fabric stitches (5) and a Stretch fabric surface (6), characterized in that a pore size (7) of at least some of the fabric meshes (5) of the wire mesh unit (5) by a coating (8) is changed.
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    同族专利:
    公开号 | 公开日
    CH709939B1|2019-09-30|
    DE102014110340A1|2016-01-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4416501C2|1994-05-10|1996-09-26|Judo Wasseraufbereitung|Germ protection for house water filter sieve inserts|
    DE29507080U1|1995-04-27|1995-07-06|Haver & Boecker|Shaped part consisting of at least one wire mesh layer|
    DE19738874A1|1996-09-13|1998-04-23|Sefar Ag|Screen printing forme fabric strip manufacture|
    DE102007013722A1|2007-03-22|2008-09-25|Haver & Boecker Ohg|Fabric with intersecting warp and weft wires|
    DE102009044740B4|2009-12-02|2019-02-21|Haver & Boecker Ohg|wire cloth|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014110340.8A|DE102014110340A1|2014-07-22|2014-07-22|Wire mesh unit|
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