• 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:
    The invention relates to a screw press (10) for separating liquid from a transport item, comprising a screw shaft (11) together with a spiral conveyor (13) arranged helically on the screw shaft (11) and a housing jacket (14) surrounding it, wherein between the screw shaft ( 11), the conveying helix (13) and the housing shell (14) a transport passage (15) is formed for the transported goods to be transported, wherein at least one surface portion (20) of the worm shaft (11) within the transport passage (15) a composite material (21 ) comprising hard material particles (23), which are embedded in a matrix component (24) to form a surface roughness (22), is firmly bonded. Furthermore, the use of a composite material (21) comprising hard material particles (23), which are embedded uniformly in a matrix component (24) to form a surface roughness (22), for the material-locking attachment (26) on at least one surface section (20) of a worm shaft ( 11).
    公开号:AT518550A4
    申请号:T50694/2016
    申请日:2016-07-29
    公开日:2017-11-15
    发明作者:Ing Dr Yassar Ghanimi Dipl
    申请人:Andritz Ag Maschf；
    IPC主号:
    专利说明:

    screw Press
    The invention relates to a screw press for separating liquid from a transported material, comprising a Schneckenwelie including a spirally arranged on the screw shaft conveyor coil and a surrounding housing shell, wherein between the Schneckenweile, the conveyor coil and the housing shell a transport passage for the transported goods to be transported is formed. Furthermore, the use of a composite material in connection with a screw press is specified in the context of the invention.
    The transport material to be processed by the screw press is usually a solid-liquid mixture, for example industrially prepared pulp fibers, from which the liquid entrained with the fiber material is to be separated by pressing. Likewise, the transport material to be compacted by the screw press can be, for example, pulp or sludge suspensions, waste paper, sawdust, wood waste.
    The principle of a screw press is well known: within a cylindrical or conical housing shell a equipped with a spiral Förderwendei worm shaft is mounted. The housing shell has a usually equipped with a hopper inlet opening through which a cargo is continuously fed to the screw press. In the downstream conveying direction of the goods to be transported is located in the housing shell an outlet opening through which the transported material leaves the screw press again. A spiral or helical transport passage is formed between the housing jacket and the spiral conveyor or conveyor spiral, forming a continuous transport channel for the transported goods from the inlet opening to the outlet opening and which continuously narrows in the conveying direction towards the outlet opening. It can also be provided several helical transport paths.
    As soon as the worm shaft is set in rotation, the transport material introduced into the screw press via the inlet opening is conveyed along the turns of the transporting gear up to the outlet opening by the conveyor spiral mounted on the auger shaft and is continuously compressed and pressed out. The promotion and the pressure build-up are caused by the friction of the rotating with the screw mass on the stationary cylindrical Gehäusemantei in single-screw and co-rotating twin-screw presses - one speaks in this context of friction promotion. Liquid, which is deposited during the pressing process from the transported material, passes through appropriate Flüssigkeitskeiisdurchlritte in Gehäusemantei - for example, slotted or hole-shaped liquid passages - to a collection device.
    Functional for a screw press is the screw conveyor, so the Schneckenweile together with the spiral spiral attached thereto, which simultaneously causes the pressure build-up for the transported material to be pressed.
    A problem with generic worm presses is that the worm shaft is exposed to strong abrasion by the transported material transported in the transport passage of the worm gear, which is why the surface of the worm shaft is smoothly polished after a certain operating time, depending on the degree of abrasion of the respective transport item. However, certain transport goods, such as Zeilstofffasem or fiber suspensions, adhere to the smoothly polished worm shaft surface or stick to it. Undesirably, the pulp fibers rotate more strongly with the smoothly polished snail's surface than was previously the case on a rough-grained surface. Due to this co-rotation or corotation of the pulp fibers on the screw shaft surface, however, results in an efficiency reduction of the screw press. Furthermore, the adhesion of the cargo to the worm shaft can cause an uneven filling of the transport gear and lead to a clogging of the press. To alleviate this problem, the auger surface is provided with materials of defined surface roughness so as to ensure reduced adhesion of the pulp suspension and thus increased press efficiency.
    For this purpose, for example, coated steel plates with defined surface roughness on the main body of the worm have been welded especially in the last turns of the transport gear conveyor shortly before the Ausfassöffnung, in the so-called Hochkompresslonsbereich in which the cargo is already highly compressed and much of the liquid is separated, have been so far Such Stahipfatten or, plate segments welded between the Förderwendein at Schneckenweile. A disadvantage, however, is that the production of such mostly surface-coated plates, wherein the defined surface roughness are achieved for example by thermal spraying and subsequent brush processing steps, is very expensive.
    Likewise, the welding of the surface-gray steel battens is time-consuming and cost-intensive. In addition, it has been found that the scheduled service life of a screw press are too short to replace the welded Stahlpiatten when roughness has decreased or if the rough surface coating is worn off. An alternative embodiment is according to AT 506 098 to design a stepped surface and, where appropriate, to weld corresponding bands, which also requires longer lives for replacement.
    It is therefore an object of the present invention bereitzusteiien a screw press, which avoids the disadvantages of the prior art, and can be replaced quickly and inexpensively in the surface-gray covering materials on the Schneckenweile.
    According to the invention, this object is achieved in a generic screw press in that at least one surface section of the screw shaft within the transport passage a composite material comprising Hartstoffpartikei, which are evenly distributed in a matrix component embedded to form a surface roughness, is firmly bonded.
    Particularly preferred embodiments and developments of the invention are the subject of the dependent claims.
    As a general rule, the composite material or composite material is made of materials of two or more interconnected materials that have different material properties than their individual material components. A composite material proposed in the context of the invention in which hard-material particles are uniformly embedded in a matrix component in such a way that the hard-material particles ensure a surface roughness of the composite offers the advantage that it can be produced more quickly and less expensively than the surface-coated steel plates currently used Case is. In addition, hard-material particles offer the advantage of a defined surface roughness or a defined coefficient of friction, soft or which are as constant as possible over the lifetime of the composite material. The compound of the Hartstoffpartikei with the matrix component in which they are at least partially embedded, carried by material or form closure or a combination of both.
    A softer or more flexible matrix component compared to the hard material particles-which is made, for example, from a dimensionally stable plastic-also offers the advantage that the composite material can be better adapted to the geometric conditions of the respective surface section of the screw groove than is the case with coated steel plattens is. In addition, surface portions of the worm-cane covered with such a comparatively flexible composite can more easily and quickly be exchanged because of the lower weight and the greater flexibility or flexibility of the composite.
    Appropriately, in a screw press according to the invention, the composite material on its underside with a Kiebeschicht on the Schneckenweile be solvable angekfebt. By suitable choice of an adhesive bond, the composite material can be fastened with its underside quickly and inexpensively to a Oberfiächenabschnitt the Schneckenweiie. In any case, an adhesive bond is cheaper to produce in comparison to a welded joint with which the surface-gray steel platings were previously fastened to the screw helix. In the context of the invention, all known variants of adhesive bonds can be used for this purpose. For example, the adhesive layer is applied only to the underside of the composite material and this is positioned with the adhesive layer ahead on the corresponding Oberfiächenabschnitt the Schneckenweie or, pressed on this. Alternatively, the jaw layer can also be applied to the corresponding Oberfiächenabschnitt the worm shaft, wherein subsequently the composite material is placed or pressed onto this Kiebeschicht. Furthermore, a Kontaktkiebeverfahren is conceivable within the scope of the invention, both adhesive surfaces - both the underside of the composite material as well as the adherend Oberfiächenabschnitt the screw shaft - are coated with the same adhesive or with different adhesives and then the composite is adhered to the worm shaft.
    Advantageously, in an embodiment of a screw press according to the invention, the surface roughness of the composite material with which the Hartsioff particles project from the matrix component is from 2 μm to 20 μm, preferably from 3 μm to 10 μm, particularly preferably from 5 μm to 8 μm. The composite material has a defined surface roughness, wherein the specified roughness dimensions relate to the supernatant of the hard material particles with respect to the matrix component in which the particles are embedded. In one development of the invention, the composite material may comprise at least one wear indicator layer, soft wear indicator layer is integrated within the matrix component and / or soft wear indicator layer is arranged on the underside of the composite material. Advantageously, a wear indicator layer which comprises, for example, a color-coded, colored polymer layer serves as an indicator for the wear of the composite material used. In a further advantageous embodiment, in a screw press, the composite material is a composite mat comprising hard material particles which are uniformly distributed in a matrix component to form a
    Surface roughness are embedded, and further comprising an adhesive layer on an underside of the composite mat, executed, wherein the composite mat is releasably adhered to at least a surface portion of the transport passage of the screw shaft. In this embodiment, which is particularly easy to handle, the composite material is already prepared as a composite mat, wherein an adhesive layer is provided on the underside of the composite material, which is covered, for example, with a protective film. The composite mat is thus designed as seibstklebende mat, creating a particularly rapid positioning and Bekiebe the
    Composite mat is made possible on a surface portion of the worm shaft. For example, stencils can easily and quickly be made which image the respective pitch of the worm shaft or the geometry of the respective transport path and serve as a template for tailor-made cutting and positioning of the corresponding composite mats. In a further variant of the invention, in a screw press, the composite mat may include at least one wear indicator pocket integrated within the matrix component and / or soft wear indicator layer disposed between the matrix component and the adhesive layer. As previously stated, is also at one
    Composite mat a wear indicator layer, which includes, for example, a color-coded, colored polymer layer, ais indicator of the wear of the composite used advantage.
    Particularly advantageous are bet a screw press according to the invention at the Schneckenweile at least at several surface portions of a
    Transport gear each composite mats with a surface roughness of 2 pm to 20 pm, preferably from 3 pm to 10 pm, more preferably from 5 pm to 8 pm, releasably adhered. By gluing the worm shaft with composite mats advantageously the adhesion and the co-rotation of the transported material to be pressed, for example pulp fibers, are prevented at the worm shaft surface and the efficiency of the worm press is increased
    Suitably, in a further embodiment of a screw press according to the invention a plurality of composite material mats, preferably three or four composite mats, adjacent to adjacent surface portions of a transport gear of the worm shaft releasably adhered. For ease of handling several composite mats are glued together adjacent to the worm shaft in the corresponding turns of the transport gear of the conveyor spiral. In particular, in the high compression range of the screw press the Schneckenweile can be quickly and easily pasted with composite mats with defined surface roughness. Here as well, stencils can optionally serve for the exact assembly and positioning of the composite mats.
    Advantageously, in a screw press according to the invention, the matrix component of the composite, in which the hard particles are embedded to form a surface roughness, is made of an elastomer, preferably a thermoplastic elastomer, by the hard particles uniformly distributed in the softer, elastic matrix component of elastomer or a thermoplastic elastomer To achieve a defined and durable as possible surface roughness of the composite material or the composite mat.
    In the context of the invention, the use of a composite material comprising hard material particles which are embedded in a matrix component to form a surface roughness is also provided for the material-locking attachment to at least one surface section of a screw shaft of a screw press.
    When using a composite material for material attachment to at least one OberfSächenabschnitt a particularly advantageous
    Schneckenweile that the composite material with a jaw layer on the at least one surface portion of a Schneckenwelie is releasably adhered.
    The invention also contemplates the use of a composite material comprising soft hard particles embedded in a matrix component to form surface roughness, wherein the composite mat further comprises a scrim layer on a lower surface of the composite mat for releasably adhering to at least a surface portion of a worm shaft Screw press provided, The use of a self-adhesive composite mat is particularly practical and easy to use. For gluing, for example, only a Schutzfoile, with the Kiebeschicht on the underside of the composite mat is covered, deducted, and the
    Composite mat can then be positioned and glued to a surface portion of the worm shaft.
    When using a composite material and / or a composite mat, it is advantageous if the surface roughness with which the hard material particles project from the matrix component is from 2 μm to 20 μm, preferably from 3 μm to 10 μm, particularly preferably from 5 μm to 8 μm, is.
    The use according to the invention of a composite material and / or a composite mat is particularly expedient if at least one wear indicator layer is integrated within the matrix component and / or at least one wear indicator layer is arranged between the matrix component and the adhesive layer.
    In the context of the invention, however, it is also possible to use a composite material and / or a composite mat, wherein the matrix component of the composite in which the hard material particles are embedded to form a surface roughness, from an elastomer, preferably a thermoplastic elastomer, hergesteiit. Due to the lower weight and the high flexibility of the composite material or the composite mat compared to steel plates, surface sections of the worm shaft can thus be provided with a defined surface roughness particularly quickly and easily.
    Further details, Merkmaie and advantages of the invention will become apparent from the following explanation of schematically illustrated in the drawings embodiments. In the drawings show:
    1 in a partial sectional view from the side of a first embodiment of a screw press according to the invention:
    Fig. 2 is a partial sectional side elevational view of a detail of a second embodiment of a screw press according to the invention;
    Fig. 3 in a partial sectional view in isometric view of each marked in Figures 1 and 2 detail section A in an enlarged view
    Fig. 1 shows a screw press 10 according to the invention, which comprises a Schneckenweile 11 with a Schneckenweiienachse 12, wherein the Schneckenweile 11 has a spiral or helically extending conveyor coil 13 which extends to an inner side of an outer housing shell 14. Between the housing shell 14 and the screw shaft 11 or the conveying spiral 13 arranged thereon, a transport passage 15 is formed through which a conveyed material to be pressed is transported in a conveying direction 16 from an inlet opening 17 in the housing jacket 14 to an outlet opening 18. By a suitable choice of the geometry of the screw shaft 11, which is designed to taper conically, for example, in the downstream conveying direction 16 to Ausiassöffnung 18, and by a suitable choice of the slope of Förderwendei 13 is a free Querschnittsfiäche the transport gear 15 is gradually reduced in the conveying direction 16.
    The auger shaft 11 is mounted with a plurality of shaft journals 19 in rotatable bearings (not shown) around the screw axis 12 and provided with a drive, not shown. By this drive means the auger 11 is set in rotation, wherein the transported material is guided through the tapering in the conveying direction 16 spiral transport path 15 and the cargo here undergoes progressive drainage.
    In order to dissipate thereby separated from the transported liquid, 14 not shown liquid passages are provided in the housing shell, which are designed for example slotted or hole-shaped. The effluent through the liquid passages liquid is collected in a designated catcher.
    In order to prevent the adherence of the transported goods - for example, fiber or slurry suspensions - on the surface of the worm shaft 11 or to reduce abrasion of the worm shaft 11 caused by such materials with the disadvantages already mentioned, at least one surface section 20 is provided the worm shaft 11 within the transport passage 15, a composite material 21 with a defined surface roughness 22 firmly bonded. The composite material 21 comprises hard material particles 23 which are embedded uniformly distributed in a matrix component 24 of the composite material 21 to form a surface roughness 22.
    As can be seen from FIG. 3, which illustrates the detail section A marked in FIG. 1 in an enlarged view, the material-elastic fastening of the composite material 21 takes place here by bonding to an adhesive layer 26 which is applied to an underside 28 of the composite material 21 or Alternatively, it is applied to the corresponding Oberfiächenabschnitt 20 of the screw shaft 11 before the composite material 21 is pressed onto the adhesive layer 26. It is also conceivable within the scope of the invention that adhesive layers 26 of the same adhesive or else different adhesives are applied to the underside 28 of the composite material 21 as well as to the corresponding corresponding surface portion 20 of the worm shaft 11, according to the principle of a contact caliper.
    As can be seen in Fig. 3 enlarged, the hard material particles protrude! 23 to a defined surface roughness 22, which here is for example from about 5 pm to 8 pm, from the matrix component 24 forth. The matrix component 24 is here produced from a thermoplastic elastomer. The hard material particles 23 are thus advantageously embedded in a comparatively softer, elastic matrix component, whereby the wear of the hard material particles 23 is reduced and the life of the surface-gray composite material 21 is prolonged.
    As a wear indicator here a wear indicator layer 27 is integrated within the matrix component 24 and disposed between the matrix component 24 and the Kiebeschicht 26. The wear indicator layer 27 comprises, for example, a color-coded, colored polymer layer which becomes visible when the hard material particles! 23 are rubbed off.
    FIG. 2 shows a further embodiment variant of a screw press 10 according to the invention, in which case surface sections 20 of the screw shaft 11 are glued within the transport passage 15 with composite mats 25 comprising a composite material 21 having a defined surface roughness 22. In addition, an adhesive layer 26 is already arranged on the underside 28 of the composite mats 25, the composite mats 25 are therefore seibstkiebend equipped and particularly convenient for gluing the worm shaft 11. The adhesive layer 26 is for example covered with a protective film, not shown, prior to laying the composite mats 25 is deducted.
    The plurality of composite mats 25 are glued together in Fig. 2 adjacent to adjacent Oberfläehenabschnitten 20 of Schneckenweiie 11 within the turns of the transport passage 15, which are in the high compression region 30 of the screw press 10, such that these easily and quickly replaced after a certain life or wear and can be replaced with new composite mats 25.
    Analogous to FIG. 1, the detail section A marked in FIG. 2 is also illustrated in an enlarged view, in contrast to FIG. 1, where, in the case of a composite material 21, the adhesive layer 26 additionally on the underside 28 of the composite material 21 - or directly on the Schneckenweiie 11 - must be applied when using a composite mat 25, the adhesive layer 26 already applied to the bottom 28 of the composite mat 25. Thus, Fig. 3 in principle stiffens both the finished layer structure of a aufgekiebten composite material 21, as well as a bonded composite mat 25.
    权利要求:
    Claims (10)
    [1]
    claims
    1. screw press (10) for separating liquid from a transported material, comprising a Schneckenweile (11) together with a spiral on the screw shaft (11) arranged conveying spiral (13) and a surrounding Gehäusemantei (14), wherein between the worm shaft (11) in that the conveying helix (13) and the housing edge (14) form a transport passage (15) for the transported goods to be transported, characterized in that at least one surface section (20) of the helix (11) within the transport passage (15) is a composite material (15). 21) comprising hard material particles (23), which are evenly distributed in a matrix component (24) embedded to form a surface roughness (22), materialschiüssig attached est
    [2]
    2. screw press (10) according to claim 1, characterized in that the composite material (21) on its underside (28) with an adhesive layer (26) on the worm shaft (11) is releasably angekiebt.
    [3]
    3. screw press (10) according to claim 1 or 2, characterized in that the composite material (21) ais composite mat (25) comprising hard material particles (23). which are embedded in a matrix component (24) to form a surface roughness (22), and further comprising an adhesive layer (26) on a lower surface (28) of the composite mat (25), the composite mat (25) at least at a surface portion (20) the Schneckenwelie (11) is releasably adhered.
    [4]
    4. screw press (10) according to one of claims 1 to 3, characterized in that the surface roughness (22) of the composite material (21) or the composite mat (25) with which the hard material particles (23) protrude from the matrix component (24), from 2 μm to 20 μm, preferably from 3 μm to 10 μm, particularly preferably from 5 μm to 8 μm.
    [5]
    5. screw press (10) according to one of claims 1 to 4, characterized in that the composite material (21) or the composite mat (25) comprises at least one wear indicator layer (27), soft wear indicator layer (27) within the matrix component (24) is integrated and / or which wear indicator layer (27) is arranged on the underside (28) of the composite material (21).
    [6]
    6. screw press (10) according to one of claims 3 to 5, characterized in that a plurality of composite mats (25), preferably three or four composite materials (25). adjacent to adjacent surface portions (20) of Schneckenweile (11) within a transport passage (15) are releasably angekiebt.
    [7]
    7. screw press (10) according to one of claims 1 to 6, characterized in that the matrix component (24) of the composite material (21), in which the hard material particles (23) to form a surface roughness (22) are embedded, from a Elastomer, preferably a thermoplastic elastomer, is prepared,
    [8]
    8. Use of a composite material (21) comprising hard material particles! (23) embedded uniformly in a matrix component (24) to form a surface roughness (22), for material attachment (26) to at least a surface portion (20) of a screw shaft (11) of a screw press (10), said composite material (21) preferably with an adhesive layer (26) on the at least one Oberfiächenabschnitt (20) of a screw shaft (11) is detachably attachable,
    [9]
    9. The use of a composite mat (25) comprising hard material particles (23) which are embedded uniformly distributed in a matrix component (24) to form a surface roughness (22), and further comprising a glue layer (26) on a lower side (28) of the composite mat ( 25), for releasably adhering to at least one Oberfiächenabschnitt (20) a Schneckenweile (11) a screw press (10), wherein preferably a wear indicator layer (27) within the matrix component (24) is integrated and / or at least one Verschieißindikatorschicht (27) between the Matrix component (24) and the adhesive layer (26) is arranged.
    [10]
    10. Use of a composite material (21) according to claim 8 and / or a composite mat (25) according to claim 9, characterized in that the surface roughness (22) with which the hard material particles! (23) project from the matrix component (24), from 2 μm to 20 μm, preferably from 3 μm to 10 μm, particularly preferably from 5 μm to 8 μm, wherein the matrix component (24) is preferably made of a thermopiastic elastomer ,
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    同族专利:
    公开号 | 公开日
    WO2018019444A1|2018-02-01|
    SI3490788T1|2020-10-30|
    EP3490788B1|2020-07-01|
    AT518550B1|2017-11-15|
    CN109476107B|2020-10-27|
    ES2820700T3|2021-04-22|
    RS60853B1|2020-10-30|
    CA3031993A1|2018-02-01|
    PT3490788T|2020-09-24|
    PL3490788T3|2020-12-28|
    MX2019001123A|2019-06-17|
    US20210122128A1|2021-04-29|
    RU2720942C1|2020-05-14|
    US11052626B2|2021-07-06|
    CN109476107A|2019-03-15|
    EP3490788A1|2019-06-05|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50694/2016A|AT518550B1|2016-07-29|2016-07-29|screw Press|ATA50694/2016A| AT518550B1|2016-07-29|2016-07-29|screw Press|
    CN201780046109.0A| CN109476107B|2016-07-29|2017-05-23|Screw extruder|
    ES17725576T| ES2820700T3|2016-07-29|2017-05-23|Screw press|
    MX2019001123A| MX2019001123A|2016-07-29|2017-05-23|Screw press.|
    PT177255767T| PT3490788T|2016-07-29|2017-05-23|Screw press|
    US16/319,059| US11052626B2|2016-07-29|2017-05-23|Screw press|
    PCT/EP2017/062319| WO2018019444A1|2016-07-29|2017-05-23|Screw press|
    CA3031993A| CA3031993A1|2016-07-29|2017-05-23|Screw press|
    EP17725576.7A| EP3490788B1|2016-07-29|2017-05-23|Screw press|
    RU2019101920A| RU2720942C1|2016-07-29|2017-05-23|Screw press|
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