EP0135544B1 - Dispositif d'elimination de l'eau pour la partie humide d'une machine a papier - Google Patents

Dispositif d'elimination de l'eau pour la partie humide d'une machine a papier Download PDF

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Publication number
EP0135544B1
EP0135544B1 EP84900849A EP84900849A EP0135544B1 EP 0135544 B1 EP0135544 B1 EP 0135544B1 EP 84900849 A EP84900849 A EP 84900849A EP 84900849 A EP84900849 A EP 84900849A EP 0135544 B1 EP0135544 B1 EP 0135544B1
Authority
EP
European Patent Office
Prior art keywords
sucker
machine
felt
projection
watering
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.)
Expired
Application number
EP84900849A
Other languages
German (de)
English (en)
Other versions
EP0135544A1 (fr
Inventor
Karl-Dieter Fuchs
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.)
Feldmuehle AG
Original Assignee
Feldmuehle 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 Feldmuehle AG filed Critical Feldmuehle AG
Priority to AT84900849T priority Critical patent/ATE26730T1/de
Publication of EP0135544A1 publication Critical patent/EP0135544A1/fr
Application granted granted Critical
Publication of EP0135544B1 publication Critical patent/EP0135544B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/52—Suction boxes without rolls
    • D21F1/523—Covers thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/483—Drainage foils and bars

Definitions

  • the invention relates to a strip-shaped drainage element for the sieve or felt part of a fiber dewatering machine, in particular paper machine, such as a sieve table, foil, support table, wet vacuum cleaner, suction device, pipe suction device, felt suction device, the coating of which consists of individual segments made of hard materials and is in sliding contact with the sieve or felt.
  • paper machine such as a sieve table, foil, support table, wet vacuum cleaner, suction device, pipe suction device, felt suction device, the coating of which consists of individual segments made of hard materials and is in sliding contact with the sieve or felt.
  • a sieve table such as a sieve table, foil, support table, wet vacuum cleaner, suction device, pipe suction device, felt suction device, the coating of which consists of individual segments made of hard materials and is in sliding contact with the sieve or felt.
  • sintered aluminum oxide, silicon carbide or the like which abut one another with their abutting surfaces, have a shoulder on the side facing away from the sie
  • Last-shaped drainage elements for the screen or felt part of a fabric dewatering machine which are made up of individual segments made of hard materials in combination with other materials, are known.
  • the introduction of the dewatering elements equipped with hard materials enabled the advantageous high working speeds of the dewatering machine currently in use.
  • a decisive disadvantage of the structure of segments is that joints between the individual segments can damage the screen and felt and cause errors such as water streaks in the paper to be produced - especially if there are manufacturing-related tolerances between the individual segments.
  • This disadvantage can be eliminated by grinding a completely installed drainage element at the manufacturer. Nevertheless, there may be gaping at the connection joints if the drainage elements are stressed by bending, torsion and / or thermal expansion.
  • GB-A-1 232681 can also consist of individual segments with stepped connecting surfaces at their longitudinal ends which extend over the entire width of the segments, where the hard material bodies carrying the screen are not in one brittle plastic such as polyethylene are stored.
  • the polyethylene expands more than the hard materials and is ground off the sieve, the machine then cools down under other operating conditions, the material ground down in the butt joints is missing and this construction also affects the vacuum and thus strip formation in the Paper.
  • the object of the present invention is now to provide a strip-shaped drainage element for the screen or felt part of a fabric dewatering machine, which has no shoulders, steps or gaps in any of them when subjected to bending, torsion in the longitudinal direction or thermal expansion at the joints of the individual ceramic segments Length can be manufactured and sanded ready, is easy to assemble and is safe and easy to handle.
  • the advantage of the invention is that an overlapping adhesive connection of the individual segments creates a structure that can be regarded as a self-supporting drainage element in terms of strength and can be handled safely as such. Since the upper and lower parts are made of materials with the same thermal expansion coefficient, this composite construction does not experience any forces due to thermal expansion due to thermal expansion, which leads to changes in shape or deformation, particularly at the joints, and thus to component failure.
  • the non-positive and form-fitting overlapping adhesive connection enables a substantial enlargement of the surfaces that are connected to each other and thus a reduction in the specific surface load by a factor of 1.4 to 2.0.
  • the critical shear strength of the adhesive connection is greater than the critical static strength of the selected hard materials made of ceramic material, it is achieved that no plastic or elastic deformations and the associated change in shape of the strip-shaped drainage element occur at the connection points.
  • the invention provides that the segment made of hard materials is not formed in one part and processed by grinding, but rather is assembled from the separately manufactured processed upper part and shoulder by means of an overlapping adhesive connection.
  • the upper part and the neck advantageously consist of the same material with the same specific material characteristics.
  • the approach is not subject to such great demands regarding grain size distribution, surface hardness, pore volume, pore distribution, grinding and polishability as the upper part. You can therefore also use starting materials that only meet the requirements for strength and thermal expansion coefficient, while the upper part in contact with the screen or felt additionally z. B. should have as few pores as possible so that no filler particles can deposit therein, which in turn lead to sieve and felt damage. Pores in the approach, however, are favorable for better adhesion of the adhesive.
  • the batch can be produced, for example, from the waste generated during the processing of the green moldings.
  • the adhesive connection surface should be identical to the neutral axis of the entire cross-section, or may be above the neutral axis. If the adhesive surface lies in the neutral axis, then there are no tensile, compressive or other stresses. If the adhesive surface is above the neutral axis, the adhesive layer is only loaded by compressive stresses. In this way, a high level of security of the connection is guaranteed. If the adhesive were subjected to peeling, the security of the connection would be only a fraction of that in the case of shear or shear stress.
  • Figure 1 shows the two-part segment (1), consisting of the upper part (2) and the approach (3), which can be manufactured individually and are easy to edit.
  • the upper part (2) and shoulder (3) have the same length and are each shifted by half the length on their horizontal adhesive connection surfaces (4) by means of the adhesive layer (8).
  • the adjacent upper part (2 ') adjoins the upper part (2). This is in turn non-positively connected to the two components via the horizontal and vertical connecting surface (4) and (5) by means of the adhesive layer (8).
  • This structure is repeated by alternately attaching approach (3) and upper part (2) until the desired length of the drainage element has been reached.
  • FIG. 2 shows a drainage element in the sectional view in the plane of the line IV-IV drawn in Figure 1.
  • the upper part (2) is designed in the form of a foil.
  • the connection to the neck (3) is made by the adhesive layer (8).
  • the approach (3) has a T-shaped cross section.
  • the drainage element is connected to the supporting structure by means of a profile strip (9) shown in FIG.
  • Figure 3 shows a drainage element of a second embodiment in a perspective view.
  • the structure is again made up of two-part individual segments (1).
  • the direction of wire travel is indicated by the arrow (6).
  • the upper part (2) is formed in the form of a foil and wider than the neck (3).
  • the approach (3) has a dovetail cross-section for connection to the profile bar, not shown here.
  • the thickness of the extension (3) in the vertical extension is greater than the thickness of the top (2).
  • the upper part (2) has the same overall length as the extension (3) and is offset by half the overall length on the extension (3) by means of the adhesive layer (8).
  • Figure 4 shows the vertical section through a drainage element in its structure on the support structure of a fabric dewatering machine.
  • the contact surface (11) of the upper part (2) touches the sieve or the felt, the direction of which is indicated by the arrow (6).
  • the attachment (3) the cross section of which is trapezoidal, non-positively connected to the upper part (2), engages in the profile strip (9), which is made of plastic, glass fiber reinforced plastic or metal.
  • the profile strip (9) in turn encompasses a T-shaped metal profile (12) of the supporting structure (10) of the fabric dewatering machine.
  • the dewatering segment with its extension (3) can only move freely in the recess of the profile strip (9) transversely to the direction of wire travel.
  • the profile strip (9) on the T-shaped metal profile (12) with the supporting structure (10) can only move freely transversely to the direction of wire travel (6). With this arrangement, thermal expansions in the assembled structure are compensated for by slip, so that no bending stresses occur on the drainage element.

Landscapes

  • Paper (AREA)
  • Drying Of Gases (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

Le dispositif pour l'élimination de l'eau en forme de barre pour la partie humide d'une machine, en particulier une machine à papier pour l'élimination de l'eau d'une substance, telle qu'une table de filtrage, foil, table de support, aspirateur humide, aspirateur, aspirateur à tuyau, aspirateur à feutre, est agencé de manière telle que les revêtements formés de matières dures telles que l'oxyde d'aluminium fritté, le carbure de silicium ou autre matière semblable, se trouvant en contact glissant avec le filtre ou le feutre, sont constitués de segments individuels qui présentent eux-mêmes des dispositifs (3) pour recevoir des barres profilées s'étendant transversalement au sens de la marche de la machine. Les segments présentent à leurs extrémités longitudinales des surfaces de liaison (4, 5) étagées s'étendant sur toute la largeur des segments et sont collés entre eux à ces surfaces de liaison.

Claims (3)

1. Elément d'égouttage en forme de lame pour la partie toile ou feutre d'une machine d'égouttage pour matière fibreuse, en particulier d'une machine à papier, telle qu'une table d'égouttage, une lame d'égouttage, une table d'appui, une caisse aspirante humide, une caisse aspirante à feutre, élément dont la garniture, en contact de glissement avec la toile ou le feutre, est constitué par des segments (1) individuels en matière dure telle que de l'oxyde d'aluminium fritté, du carbure de silicium ou analogue qui sont juxtaposés avec leurs surfaces d'about (5), et dont le côté opposé au côté toile présente un talon (3), les segments (1) individuels étant fixés sur une lame de profilé (9) s'étendant transversalement au sens de la marche de la machine, et montée, de son côté, sur le bâti (10) de la machine d'égouttage et les segments (1) individuels étant reliés entre eux par collage, caractérisé en ce que les segments (1) sont constitués par une partie supérieure (2) frittée à part, que ces parties présentent le même coefficient de dilatation thermique et que les surfaces d'about (5) verticales, collées entre elles ainsi que les surfaces de contact (4) horizontales sont disposées de façon que la partie supérieure (2) et le talon (3) soient décalés l'une par rapport à l'autre dans le sens longitudinal de l'élément d'égouttage.
2. Elément d'égouttage en forme de lame selon la revendication 1, caractérisé en ce que la partie supérieure (2) et le talon (3) sont constitués par le même matériau.
3. Elément d'égouttage en forme de lame selon l'une des revendications 1 ou 2, caractérisé en ce que la section du profilé global, constitué par le talon (3) et la partie supérieure (2), est définie de façon que l'axe neutre de la section globale s'étende parallèlement à l'axe longitudinal de l'élément d'égouttage et soit situé dans le plan du joint de collage horizontal (surface de contact (4)).
EP84900849A 1983-02-24 1984-02-22 Dispositif d'elimination de l'eau pour la partie humide d'une machine a papier Expired EP0135544B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84900849T ATE26730T1 (de) 1983-02-24 1984-02-22 Entwaesserungselement fuer den nassteil einer papiermaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3306457A DE3306457C2 (de) 1983-02-24 1983-02-24 Entwässerungselement für den Naßteil einer Papiermaschine
DE3306457 1983-02-24

Publications (2)

Publication Number Publication Date
EP0135544A1 EP0135544A1 (fr) 1985-04-03
EP0135544B1 true EP0135544B1 (fr) 1987-04-22

Family

ID=6191719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84900849A Expired EP0135544B1 (fr) 1983-02-24 1984-02-22 Dispositif d'elimination de l'eau pour la partie humide d'une machine a papier

Country Status (9)

Country Link
EP (1) EP0135544B1 (fr)
JP (1) JPS60500819A (fr)
BR (1) BR8405488A (fr)
CA (1) CA1235010A (fr)
DE (2) DE3306457C2 (fr)
FI (1) FI80093C (fr)
IT (1) IT1180437B (fr)
SU (1) SU1431685A3 (fr)
WO (1) WO1984003314A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823882A1 (de) * 1988-07-14 1990-01-18 Feldmuehle Ag Schlitzsauger
DE29504419U1 (de) * 1995-03-15 1995-05-11 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Leisteneinheit zur nachgiebigen Unterstützung eines Siebbandes einer Papiermaschine
US5630910A (en) * 1995-06-26 1997-05-20 Jwi Ltd. Clip fastener for a dewatering box
GB9518713D0 (en) * 1995-09-13 1995-11-15 Int Syalons Newcastle Ltd Wear-resistant blade element
DE10130323A1 (de) * 2001-06-22 2003-01-02 Voith Paper Patent Gmbh Verschleisskörper in Schichtverbundbauweise, insbesondere in einer Papier- oder Kartonmaschine, Verfahren zu seiner Herstellung und seine Verwendung
ES2329843T3 (es) 2006-10-16 2009-12-01 Klaus Bartelmuss Liston de criba para instalaciones de generacion de papel.
US7918969B2 (en) * 2007-03-23 2011-04-05 Astenjohnson, Inc. Composite construction for dewatering blades for a papermaking machine
EP2150651B1 (fr) * 2007-05-23 2015-03-18 AstenJohnson, Inc. Lame d'épaississement pour machine à papier incorporant un mécanisme de fixation
AT524317B1 (de) * 2021-06-08 2022-05-15 Bartelmuss Ing Klaus Abstreifleiste und Bausatz zur Verwendung in einer Anlage zur Erzeugung einer Papierbahn

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE349341B (fr) * 1967-04-17 1972-09-25 Leder & Riemen Patent
AT357857B (de) * 1974-07-29 1980-08-11 Bartelmuss Heinrich Ing Verfahren und vorrichtung zur herstellung eines aus einzelnen oxidkeramikelementen bestehenden belages
US4047993A (en) * 1975-11-13 1977-09-13 Heinrich Bartelmuss Method of making an abrasion-resistant plate
FI791520A7 (fi) * 1978-05-12 1979-11-13 Rudolf Poeschl Med sikten eller filten i en massaavvattningsanordning samverkande byggdel och foerfarande foer dess framstaellning
US4238286A (en) * 1979-05-22 1980-12-09 Rudolf Poeschl Dewatering table bar for the wire cloth or felt in a pulp-dewatering machine

Also Published As

Publication number Publication date
DE3306457C2 (de) 1986-05-07
SU1431685A3 (ru) 1988-10-15
IT8412445A0 (it) 1984-02-24
DE3306457A1 (de) 1984-08-30
WO1984003314A1 (fr) 1984-08-30
JPS60500819A (ja) 1985-05-30
FI80093C (fi) 1990-04-10
IT1180437B (it) 1987-09-23
FI843839A0 (fi) 1984-09-28
CA1235010A (fr) 1988-04-12
IT8412445A1 (it) 1985-08-24
DE3463281D1 (en) 1987-05-27
BR8405488A (pt) 1985-02-20
FI843839L (fi) 1984-09-28
FI80093B (fi) 1989-12-29
EP0135544A1 (fr) 1985-04-03

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