EP0839952B1 - Patin de pressage - Google Patents

Patin de pressage Download PDF

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Publication number
EP0839952B1
EP0839952B1 EP97116138A EP97116138A EP0839952B1 EP 0839952 B1 EP0839952 B1 EP 0839952B1 EP 97116138 A EP97116138 A EP 97116138A EP 97116138 A EP97116138 A EP 97116138A EP 0839952 B1 EP0839952 B1 EP 0839952B1
Authority
EP
European Patent Office
Prior art keywords
shoe
press according
shoe press
roll
press
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 - Lifetime
Application number
EP97116138A
Other languages
German (de)
English (en)
Other versions
EP0839952A1 (fr
Inventor
Joachim Dr. Grabscheid
Christian Schiel
Andreas Schüette
Wolfgang Schuwerk
Werner Leitenberger
Uwe Matuschczyk
Christian Steger
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0839952A1 publication Critical patent/EP0839952A1/fr
Application granted granted Critical
Publication of EP0839952B1 publication Critical patent/EP0839952B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • D21F3/0245—Means for fixing the sleeve to the roller end
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses

Definitions

  • the present invention relates to a shoe press, in particular for a paper machine, with at least one roller, the one flexible around a stationary carrier Roll shell and at least one a support surface for the Includes inside of the roll shell shoe.
  • the shoe presses of the type mentioned are flexible Roll shell usually through the concave inwards bent press shoe pressed against a rigid counter roll. This creates a press nip between the press roll and the counter roll, a certain length in the feed direction of the material to be pressed, so-called press zone length. The longer this press zone is, the larger the at the same contact pressure of the Press shoe placed on the material to be pressed.
  • the Contact pressure of the press shoe can be in the feed direction the press zone can also be different, i.e. gradients exhibit.
  • the invention has for its object a shoe press of the type mentioned in such a way that this Disadvantages do not occur.
  • an extension is intended the press zone without damaging the flexible Roll jacket are made possible.
  • the support surface of the Shoe is essentially flat that the shoe to form a press nip with a second, itself a supportive shoe cooperates, which also has a substantially flat support surface, the substantially parallel to the support surface of the first shoe runs and supports an endlessly circulating band, and that at least one of the two shoes against the other shoe can be pressed.
  • the immersion depth of the flexible roll shell advantageously on the Half reduced.
  • the press shoe and thus the press zone length can clearly be compared to conventional shoe presses be enlarged without the risk of damage to the coat Alternating bending deformations exist during the operation of the shoe press.
  • the inventive design of the shoe press can press zone lengths of 500 mm, for example can be achieved with a roll diameter of 1500 mm, or generally, a ratio of press zone length to roll shell circumference greater than 0.07.
  • the shoe press according to the invention thus enables one high press pulse with low maximum pressure and low pressure gradient over the press length. hereby can be particularly gentle drainage of paper webs can be achieved because the surface layers are less be compacted and thereby drainage overall is facilitated. These advantages are both graphic Paper machines as well as machines for cardboard and Packaging papers can be used.
  • the shoe press according to the invention can be designed the invention in addition to the roller-shaped shoe press unit a second shoe press unit with the press jacket closed on the side with a side open, from the second shoe have supported press belt, which in a known manner is guided over pulleys.
  • the width of the press belt is preferably narrower than the width of the Roller jacket of the roller-shaped shoe press unit.
  • At least at least one axial end region of the roll shell a roller over a radially flexible side plate on the Carrier of the associated roller rotatably mounted.
  • the flexible side plate can according to an embodiment of the Invention as a rim with a flexible, in particular compressed air-filled Hose be formed. This is constructive inexpensive and also allows adjustment of flexibility.
  • At least a shoe opposite the assigned wearer in particular hydraulically, radially adjustable. This can advantageously according to a further embodiment of the invention a deflection of the associated carrier when operating the Roller to be compensated.
  • the radial adjustability of the shoe builds up a contact pressure his. This advantageously makes it self-stressing Shoe press created that have no external resources required to generate a contact pressure.
  • the contact pressure can according to a further embodiment Invention in the direction of passage of the pressed material by the Press nip and / or transversely adjustable to this his. This can advantageously in both directions Pressure profiles can be set to the pressing process optimize.
  • the shoe press according to the invention is preferably designed such that that a contact pressure can be built up in both shoe press units is, in at least one shoe press unit at least one point a firm connection between the shoe and assigned carrier is provided to the position of the press nip to define in the direction of the press plane.
  • a felt belt can be used in the shoe press according to the invention carried on both sides of the material to be pressed through the press nip be, as only on one side.
  • it is preferably a scraper is provided which touches the material to be pressed The surface of the roll shell or endless belt is scraped. Adhesive material particles can thereby be removed and the touched surface should be kept clean.
  • Support device provided for support the scraper is facing away from it
  • One side of the roll shell or endless belt is preferred Support device provided.
  • closed shoe press unit with a hydrostatic Equipped with shoe lubrication.
  • the friction between the press shoe and roller jacket can advantageously be small being held.
  • With the open shoe press unit in contrast, preferably lubricated with water.
  • the shoe press shown in FIGS. 1 and 2 comprises a Press roll 1 with a rotating around a stationary support 2 flexible roll shell 3 and a flat support surface 4 for the inside 5 of the roll shell 3 first shoe 6.
  • the first shoe 6 of the roller 1 cooperates a second, also having a flat support surface 7 Shoe 8 together, one around a stationary Carrier 9 rotating flexible roll jacket 10 of a second Roller 11 supports.
  • the support surfaces 4 and 7 of the two shoes 6 and 8 run essentially parallel to one another.
  • the two roller shells 3 and 10 of the two rollers 1 and 11 also substantially the same wide.
  • the rim 14, 15 is rotatably mounted on the stationary support 2, while the hose 16, 17 with the roll shell 3 firmly connected, in particular glued. That way radial support of the axial end regions of the roll shell 3 achieved with radial compliance.
  • the roller 11 can be designed accordingly.
  • the two shoes 6 and 8 of the two rollers 1 and 11 are each with respect to the assigned stationary carrier 2 or 9 radially adjustable, as indicated by arrows 18 and 19 is. Only roller 1 is preferred Pressure control means equipped, while the Roller 11 only with means to compensate for deflection of the stationary support 9 by radial adjustment of the Shoe 8 is equipped. The roller 1 is therefore self-stressing Press roll formed while the roll 11 does this serves as a counter roll, the shoe 8 at least on one Place is rigidly connected to the stationary support 9.
  • Press nip 20 By the between the two shoes 6 and 8 formed Press nip 20 is in the illustrated embodiment a paper web 21 and on the roller 1 facing On the side of the paper web 21, a felt belt 22 is guided. On the opposite side of the paper web 21, however, is not Felt tape provided. The roll shell 10 of the roll 11 is therefore touched paper. To keep the roll shell 10 clean a scraper (not shown here) can be provided, who scrapes and prefers the outer surface of the roll shell 10 through one on the opposite side of the roll shell 11 provided device, also not shown is supported.
  • a scraper (not shown here) can be provided, who scrapes and prefers the outer surface of the roll shell 10 through one on the opposite side of the roll shell 11 provided device, also not shown is supported.
  • Shoe press is a closed shoe press unit with a roller 30 and a shoe 31 provided with a open shoe press unit 32 cooperates.
  • the open shoe press unit 32 comprises an endless belt 33 which over pulleys 34 is guided, and a second shoe 35, which with the shoe 31 of the roller 30 to form a press nip 36 interacts.
  • the support surfaces 37, 38 are two shoes 31 and 35 substantially flat and parallel trained to each other. While the shoes 31 and 35 also have essentially the same dimensions the width of the roll shell 39 measured in the axial direction the roller 30 larger than that of the endless belt 33.
  • the two are also in the variant shown in FIG. 3 Shoes 31 and 35 preferably towards the press nip 36 adjustable, one of the two shoes for contact pressure regulation can be used while the other shoe only a deflection compensation of the assigned Carrier causes.
  • the shoe press shown in Figure 4 largely corresponds the shoe press of Figures 1 and 2, but here the width of the lower roll shell 3 is larger than that of the upper roll shell 10.
  • the side shields 41 of the lower Roller 1 can therefore be different from the variant of Figures 1 and 2 be rigid.
  • shoe 42 of the upper roller 11 is not radially movable, but instead is curved in the axial direction towards the lower roller 1.
  • the curvature ⁇ h 1 of the shoe 42 between the side edge and the center preferably corresponds to the deflection ⁇ h 2 of the carrier 9 of the upper roller 11 under operating load, which is thereby at least largely compensated for.
  • the contact pressure can be applied to all of the variants shown here both in the direction in which the material to be pressed passes through the press nip 20 or 36 and crosswise differently adjustable his.
  • Each shoe press unit can also do more than one Show shoe.
  • the shoes preferably have a length of more than 300 mm to a high pressing pulse at the same time low maximum pressure and preferably low pressure gradient to effect.
  • With the closed shoe press units is the ratio of the press nip length L to the circumference of the roll shell preferably greater than 0.07.
  • the closed shoe press units 1, 11, 30 are also preferably hydrostatic lubricated while the open shoe press unit 32 is preferably lubricated with water.
  • the design of the shoe press according to the invention enabled long press zone causes a large increase in Dry content with gentle drainage, for example of paper webs, due to the possible high Press pulse with low maximum pressure and low Pressure gradient.
  • the increasing requirements for dry content, Smoothness, volume etc. can be achieved with the invention Shoe press can be fulfilled in an excellent way.

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  • Paper (AREA)

Claims (23)

  1. Presse à patin, en particulier pour une machine à papier, avec au moins un cylindre (1), qui comprend une enveloppe latérale (3) souple tournant autour d'un support immobile (2) et au moins un patin (6) présentant une face d'appui (4) pour la face intérieure (5) de l'enveloppe latérale (3), caractérisée en ce que la face d'appui (4) du patin (6) est de forme sensiblement plane, en ce que le patin (6) coopère avec un second patin (8) prenant appui sur un support (9) pour former une fente de pressage (20), qui présente également une face d'appui sensiblement plane (7), qui est sensiblement parallèle à la face d'appui (4) du premier patin (6) et qui supporte une bande tournante sans fin (10), en ce qu'au moins un des deux patins (6, 8) peut être pressé contre l'autre patin, en ce que les patins (6, 8) présentent une longueur de plus de 300 mm, et en ce que le rapport de la longueur de la fente de pressage (L) au périmètre de l'enveloppe latérale est supérieur à 0,07.
  2. Presse à patin suivant la revendication 1, caractérisée en ce que la bande sans fin (33) supportée par le second patin (35) est conduite sur des rouleaux de déviation (34) pour former une unité de presse à patin ouverte (32).
  3. Presse à patin suivant la revendication 2, caractérisée en ce que la bande sans fin (33) supportée par le second patin (35) est plus étroite que l'enveloppe latérale (39) du cylindre (30).
  4. Presse à patin suivant la revendication 1, caractérisée en ce que la bande sans fin supportée par le second patin (8) a la forme d'une enveloppe latérale (10) d'un second cylindre (11).
  5. Presse à patin suivant la revendication 4, caractérisée en ce que les enveloppes latérales (3, 10) des deux cylindres (1, 11) ont sensiblement la même largeur.
  6. Presse à patin suivant l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins une région axiale d'extrémité de l'enveloppe latérale (3) d'au moins un cylindre (1) peut tourner sur le support (2) du cylindre associé (1) par l'intermédiaire d'une plaque latérale flexible radialement (12, 13).
  7. Presse à patin suivant la revendication 6, caractérisée en ce que la plaque latérale flexible radialement (12, 13) a la forme d'une jante (14, 15) avec une gaine souple (16, 17), en particulier remplie d'air comprimé.
  8. Presse à patin suivant l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un patin (6, 8) peut être déplacé radialement, en particulier par voie hydraulique, par rapport au support associé (2, 9).
  9. Presse à patin suivant la revendication 8, caractérisée en ce qu'une flèche du support associé (2, 9) peut être compensée par la mobilité radiale du patin (6, 8) .
  10. Presse à patin suivant la revendication 8 ou 9, caractérisée en ce qu'une pression d'application peut être créée par l'intermédiaire de la mobilité radiale du patin (6).
  11. Presse à patin suivant la revendication 10, caractérisée en ce que la pression d'application peut être réglée de façon différente dans le sens de passage du produit pressé (21) à travers la fente de pressage (20) et/ou transversalement à celle-ci.
  12. Presse à patin suivant la revendication 10 ou 11, caractérisée en ce qu'une pression d'application ne peut être créée que dans une des deux unités de presse à patin (1, 11), tandis qu'il est prévu dans la seconde unité de presse à patin, en au moins un endroit, un assemblage fixe entre le patin (6) et le support associé (2) .
  13. Presse à patin suivant l'une quelconque des revendications 8 à 12, caractérisée en ce qu'un premier patin (6) peut être déplacé radialement, tandis que l'autre patin (8) est cambré dans le sens axial (I) en direction de l'autre patin (6).
  14. Presse à patin suivant la revendication 13, caractérisée en ce que la hauteur (Δh1) de la cambrure au milieu axial du patin (42) correspond au moins approximativement à la flèche (Δh2) du support immobile associé (9) sous l'effort linéique en régime.
  15. Presse à patin suivant la revendication 13, caractérisée en ce que la hauteur (Δh1) de la cambrure vaut environ 40 à 120 % de la flèche (Δh2) du support associé sous l'effort linéique maximal de calcul.
  16. Presse à patin suivant l'une quelconque des revendications précédentes, caractérisée en ce qu'une bande de feutre (22) est entraínée de part et d'autre du produit pressé (21) mené à travers la fente de pressage (20).
  17. Presse à patin suivant l'une quelconque des revendications 1 à 15, caractérisée en ce qu'une bande de feutre (22) n'est entraínée que sur un côté du produit pressé (21) mené à travers la fente de pressage (20).
  18. Presse à patin suivant la revendication 17, caractérisée en ce qu'il est prévu un racloir, qui racle la surface de l'enveloppe latérale (10), respectivement de la bande sans fin (33), venant en contact avec le produit pressé.
  19. Presse à patin suivant la revendication 18, caractérisée en ce qu'il est prévu sur la face de l'enveloppe latérale (10), respectivement de la bande sans fin (33), située à l'opposé du racloir un dispositif d'appui pour le racloir.
  20. Presse à patin suivant l'une quelconque des revendications précédentes, caractérisée en ce que les cylindres (1, 11, 30) sont équipés d'un graissage hydrostatique des patins.
  21. Presse à patin suivant l'une quelconque des revendications précédentes, caractérisée en ce que l'unité de presse à patin ouverte (32) est lubrifiée à l'eau.
  22. Presse à patin suivant l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins une enveloppe latérale est supportée de façon excentrique par rapport au support associé.
  23. Presse à patin suivant la revendication 22, caractérisée en ce que l'axe de rotation de l'enveloppe latérale est déporté radialement vers la zone de pressage.
EP97116138A 1996-10-31 1997-09-17 Patin de pressage Expired - Lifetime EP0839952B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19644108 1996-10-31
DE19644108A DE19644108A1 (de) 1996-10-31 1996-10-31 Schuhpresse

Publications (2)

Publication Number Publication Date
EP0839952A1 EP0839952A1 (fr) 1998-05-06
EP0839952B1 true EP0839952B1 (fr) 2002-12-04

Family

ID=7809802

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97116138A Expired - Lifetime EP0839952B1 (fr) 1996-10-31 1997-09-17 Patin de pressage

Country Status (4)

Country Link
EP (1) EP0839952B1 (fr)
JP (1) JPH10131075A (fr)
CA (1) CA2219688A1 (fr)
DE (2) DE19644108A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19934875A1 (de) * 1999-07-24 2001-01-25 Voith Paper Patent Gmbh Papiermaschine
DE10132652A1 (de) * 2001-07-05 2003-01-16 Voith Paper Patent Gmbh Pressenanordnung
JP3875898B2 (ja) 2002-02-06 2007-01-31 イチカワ株式会社 抄紙機のシュープレス装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804707A (en) * 1972-03-08 1974-04-16 Beloit Corp Papermaking press with inflatable rolls having thin deformable outer shells
FI820642L (fi) * 1981-04-30 1982-10-31 Beloit Corp Press med foerlaengt nyp
DE3126492C2 (de) * 1981-06-30 1983-10-20 Escher Wyss AG, Zürich Preßwalze
DE3338487A1 (de) * 1983-10-22 1985-05-02 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Presswalze
DE4017433A1 (de) * 1989-10-11 1991-04-25 Escher Wyss Gmbh Walzenpresse
DE4423694C2 (de) * 1994-07-06 2000-03-16 Voith Sulzer Papiermasch Gmbh Langspaltpresse
DE19638689A1 (de) * 1996-09-20 1998-03-26 Voith Sulzer Papiermasch Gmbh Preßvorrichtung zur Behandlung einer Matrialbahn
DE29622025U1 (de) * 1996-10-16 1997-03-27 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Preßvorrichtung

Also Published As

Publication number Publication date
CA2219688A1 (fr) 1998-04-30
DE59708880D1 (de) 2003-01-16
EP0839952A1 (fr) 1998-05-06
JPH10131075A (ja) 1998-05-19
DE19644108A1 (de) 1998-05-07

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