EP1619299B1 - Presse à ligne de contact élargie - Google Patents

Presse à ligne de contact élargie Download PDF

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Publication number
EP1619299B1
EP1619299B1 EP05015276A EP05015276A EP1619299B1 EP 1619299 B1 EP1619299 B1 EP 1619299B1 EP 05015276 A EP05015276 A EP 05015276A EP 05015276 A EP05015276 A EP 05015276A EP 1619299 B1 EP1619299 B1 EP 1619299B1
Authority
EP
European Patent Office
Prior art keywords
extended
bearing
nip press
press according
pressure
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.)
Not-in-force
Application number
EP05015276A
Other languages
German (de)
English (en)
Other versions
EP1619299A1 (fr
Inventor
Wolfgang Mark
Ralf Gross
Axel Höhne
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.)
Andritz Kuesters GmbH
Original Assignee
Andritz Kuesters 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
Priority claimed from DE200420013639 external-priority patent/DE202004013639U1/de
Application filed by Andritz Kuesters GmbH filed Critical Andritz Kuesters GmbH
Publication of EP1619299A1 publication Critical patent/EP1619299A1/fr
Application granted granted Critical
Publication of EP1619299B1 publication Critical patent/EP1619299B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • the invention relates to a long nip pressing device with a counter roll and a shoe roll for treating a web according to the preamble of claim 1.
  • Such devices with a shoe having a printing section are known for treating a web, in particular for dewatering and / or calendering a paper web.
  • Out DE 33 17 455 is known a pressing device for dewatering a paper web, in which an elastically deformable tubular jacket runs around a fixed, designed as a hollow carrier support body. The jacket can be pressed by means of a press shoe to a part of the circumference of a counter-roller, whereby an extended in the direction of the jacket extended slot is formed. For clamping the shell in the axial direction, each of its ends is on a rotatable edge disc attached.
  • This rests on roller bearings on a bearing ring, which rests axially displaceable, but not rotatable on a bearing sleeve.
  • This bearing sleeve is attached to the support body. Compression springs cause a displacement of the bearing ring to the outside and thus a tensioning of the shell.
  • EP 0 527 881 B1 known to move the jacket axially relative to the press shoe after a certain period of operation. Such a displacement is sufficient to move away the respective fatigued area of the jacket from the axial edge area of the press shoe.
  • the displacement of the shell takes place at a fixed shell end, while the other shell end is self-positioning and thus automatically follows an axial displacement of the fixed shell end.
  • the displacement and sheath stress is achieved via additional elements in the form of built-in cylinders. These additional elements not only hinder the structural design but also require additional maintenance.
  • the object of the invention is therefore to provide a long-nip pressing device according to the preamble of claim 1, which allows an axial unclamping and method of the jacket to increase its life without additional elements.
  • a long-nip pressing device in which a peripheral disk inner part is designed as a cylinder / piston unit.
  • the pressure chambers of the double-acting cylinder / piston unit can be supplied with pressure medium and so the edge discs are moved.
  • the unclamping of the shell as well as an axial displacement thereof relative to the press shoe can take place with the same functional unit in the form of an integrated cylinder / piston unit.
  • the piston of the cylinder / piston unit can be formed by a radially extending extension of the bearing sleeve, while the cylinder can be formed by an annular chamber in the bearing ring.
  • the pressure lines are preferably guided via the piston in the pressure chambers to adjust an advantageous pressure fluid flow.
  • a displacement of the shell by means of the cylinder / piston unit can be done in discrete steps or in any position.
  • an additional locking means may be provided.
  • the bearing rings can be designed to be displaceable against a spring preload.
  • the lying outside of the jacket sliding track of the bearing ring can be enclosed by a bellows. Pollution is thereby avoided, whereby the maintenance is reduced.
  • the invention relates to a long nip pressing device with a shoe roll 1 and a driven counter roll 2, which cooperate in an extended nip 3 for treating a web, in particular a paper web, wherein the device may be part of a papermaking plant.
  • the shoe roll 1 comprises a fixed support 4 and a roll shell 5 rotatable about the support 4 and made of a flexible material, e.g. Rubber or plastic.
  • the roll shell 5 is tubular and attached with its front ends to rotatably seated on the support 4 edge discs 6, 7, to form a closed shoe roll 1.
  • a space 8 between the carrier 4 and roll shell 5 is preferably supplied with compressed air to obtain a cylindrical shape.
  • a pressure shoe 9 is provided, which limits the extended nip 3 together with the counter-roller 2.
  • the pressure shoe 9 is supported on the support 4 via a support strip made of a plurality of axially spaced-apart hydraulic support elements 10.
  • the carrier 4 has roll necks 11, 12 which are mounted in a machine frame 13, 14.
  • the rotatable edge discs 6, 7 rest on rolling bearings 15, 16 on a bearing ring 17, 18, which sits on the support 4.
  • These edge disk units are formed according to the present invention as follows.
  • bearing rings 17, 18 are, as in Fig. 2 and 3 shown axially slidably mounted on the support 4 mounted bearing sleeves 19, 20.
  • Bearing ring 17, 18 and bearing sleeve 19, 20 each form an axially and double-acting cylinder / piston unit whose pressure chambers 21, 22 and 23, 24 are connected to pressure lines 25, 26 and 27, 28 for axial movement of the bearing rings 17, 18th relative to the bearing sleeves 19, 20 when exposed to pressure medium.
  • the bearing sleeves 19, 20 each form a piston 29, 30 in the form of a radial extension, which seals the two pressure chambers 21, 22 and 23, 24 to each other and via which the pressure lines 25, 26 and 27, 28, preferably laterally guided, in the pressure chambers 21, 22 and 23, 24 end.
  • pressure medium chambers 31, 32 may be formed in the bearing sleeves 19, 20 also pressure medium chambers 31, 32 may be formed.
  • the pistons 29, 30 cooperate with a respective one of the bearing ring 17, 18 formed annular chamber 33, 34, in which the two pressure chambers 21, 22 and 23, 24 are each formed.
  • the jacket 5 By selectively loading the pressure chambers 21, 22 and 23, 24 with pressure medium, the jacket 5 can be stretched out and moved axially.
  • a locking device may additionally be provided which, according to FIG Fig. 2
  • a latching device 35 which locks with locking lug and locking bushing a shift in discrete steps.
  • a lock can be provided in any position.
  • springs 36, 37 which support the bearing ring 17, 18 spring biased relative to the machine frame 13, 14. The displacement of the bearing rings 17, 18 is thereby damped or braked.
  • the counter roll 2 is according to Fig. 1 customary trained and about bearings 38, 39 rotatably mounted in the machine frame 13, 14.
  • FIG. 4 illustrated second embodiment of the invention differs from the embodiment described above in that the bearing rings 17, 18 and the machine frame 13, 14 are each connected via a harmonious extendable sleeve 38.
  • the sheath 38 thus forms a bellows, which can follow the displaceability of the bearing rings 17, 18 and thereby covers the path of movement. A deposition of dirt on the movement path on the bearing sleeves 19, 20 is thereby avoided.
  • the trainable as a compression or compression spring springs 36, 37 are also protected.
  • the use and functionality of the shell 38 is ensured in the same way when using other means for tensioning the shell in the axial direction, such as in DE 33 17 455 or EP 0 527 881 described.

Landscapes

  • Paper (AREA)
  • Glass Compositions (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Polarising Elements (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (10)

  1. Presse à ligne de contact étendue comportant un rouleau d'appui (2) et un rouleau à sabot (1) pour traiter un matériau en bande, en particulier une bande de papier, dans lequel le rouleau à sabot (1) présente un support fixe (4) et un bandage de rouleau (5) flexible rotatif autour du support (4), lequel est soutenu dans la zone de la ligne de contact (3) sur un sabot de pression (9) agencé sur le support (4) et dont les extrémités frontales sont fixées des deux côtés dans des disques de bordure (6, 7) montés sur paliers à roulement, qui sont montés sur des manchons de montage (19, 20) fixés sur le support (4) via des bagues de montage (17, 18) à déplacement axial, caractérisée en ce qu'un manchon de montage (19, 20) et une bague de montage (17, 18) forment chacun(e) une unité à piston et cylindre à double effet axial dont les chambres de pression (21, 22 ; 23, 24) sont raccordées à des conduites sous pression (25, 26 ; 27, 28) pour une capacité de déplacement axial des bagues de montage (17, 18) lors d'une alimentation en fluide sous pression.
  2. Presse à ligne de contact étendue selon la revendication 1, caractérisée en ce qu'un piston (29, 30) est réalisé sur le manchon de montage (19, 20), lequel divise une chambre annulaire (33, 34) réalisée sur la bague de montage (17, 18) en deux chambres sous pression (21, 22 ; 23, 24).
  3. Presse à ligne de contact étendue selon la revendication 2, caractérisée en ce que les conduites sous pression (25, 26 ; 27, 28) débouchent dans les chambres sous pression (21, 22 ; 23, 24) via le piston (29, 30).
  4. Presse à ligne de contact étendue selon la revendication 3, caractérisée en ce que les conduites sous pression (25, 26 ; 27, 28) sortent latéralement sur le piston (29, 30).
  5. Presse à ligne de contact étendue selon l'une des revendications 1 à 4, caractérisée en ce que pour réaliser un disque de bordure (6) fixe, il est prévu un dispositif de blocage (35) qui immobilise une des bagues de montage (18).
  6. Presse à ligne de contact étendue selon la revendication 5, caractérisée en ce que le dispositif de blocage (35) est conçu pour un blocage d'une bague de montage (18) par pas discrets.
  7. Presse à ligne de contact étendue selon la revendication 5, caractérisée en ce que le dispositif de blocage est conçu pour un blocage d'une bague de montage dans des positions quelconques entre deux positions d'extrémité.
  8. Presse à ligne de contact étendue selon l'une des revendications 1 à 7, caractérisée en ce que les bagues de montage (17, 18) sont agencées de manière à se déplacer axialement à l'encontre d'une précontrainte de ressort pour réaliser un amortissement intégré.
  9. Presse à ligne de contact étendue selon la revendication 8, caractérisée en ce que la précontrainte de ressort peut être réalisée par un ressort (36, 37) agencé entre la bague de montage (17, 18) respective et un bâti de machine (13, 14).
  10. Presse à ligne de contact étendue selon l'une des revendications 1 à 9, caractérisée en ce que la bague de montage (17, 18) et le bâti de machine (13, 14) sont reliés par un manchon (38) télescopique à la manière d'un accordéon.
EP05015276A 2004-07-20 2005-07-14 Presse à ligne de contact élargie Not-in-force EP1619299B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004035092 2004-07-20
DE200420013639 DE202004013639U1 (de) 2004-09-01 2004-09-01 Vorrichtung zum Bilden eines Langspalts

Publications (2)

Publication Number Publication Date
EP1619299A1 EP1619299A1 (fr) 2006-01-25
EP1619299B1 true EP1619299B1 (fr) 2009-03-11

Family

ID=35063028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05015276A Not-in-force EP1619299B1 (fr) 2004-07-20 2005-07-14 Presse à ligne de contact élargie

Country Status (5)

Country Link
EP (1) EP1619299B1 (fr)
JP (1) JP2006028728A (fr)
AT (1) ATE425301T1 (fr)
CA (1) CA2512007A1 (fr)
DE (1) DE502005006788D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3733962A1 (fr) 2019-04-29 2020-11-04 Valmet Technologies Oy Module d'extrémité d'un rouleau de presse à sabot

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI120837B (fi) 2005-10-07 2010-03-31 Vaahto Oy Laitteisto puristintelan yhteydessä ja puristintela
EP3733961A1 (fr) * 2019-04-29 2020-11-04 Valmet Technologies Oy Module d'extrémité d'un rouleau de presse à sabot et procédé d'assemblage d'un module d'extrémité d'un rouleau de presse à sabot

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3317455A1 (de) 1983-05-13 1984-11-15 J.M. Voith Gmbh, 7920 Heidenheim Presseinrichtung, insbesondere zum entwaessern einer papierbahn
DE3317457A1 (de) * 1983-05-13 1984-11-15 J.M. Voith Gmbh, 7920 Heidenheim Presseinrichtung fuer bandfoermiges gut, insbesondere zum entwaessern einer papierbahn
SE464922B (sv) 1990-05-08 1991-07-01 Valmet Paper Machinery Inc Pressvals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3733962A1 (fr) 2019-04-29 2020-11-04 Valmet Technologies Oy Module d'extrémité d'un rouleau de presse à sabot

Also Published As

Publication number Publication date
ATE425301T1 (de) 2009-03-15
JP2006028728A (ja) 2006-02-02
DE502005006788D1 (de) 2009-04-23
EP1619299A1 (fr) 2006-01-25
CA2512007A1 (fr) 2006-01-20

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