EP2085513A1 - Unité de pression - Google Patents

Unité de pression Download PDF

Info

Publication number
EP2085513A1
EP2085513A1 EP08168942A EP08168942A EP2085513A1 EP 2085513 A1 EP2085513 A1 EP 2085513A1 EP 08168942 A EP08168942 A EP 08168942A EP 08168942 A EP08168942 A EP 08168942A EP 2085513 A1 EP2085513 A1 EP 2085513A1
Authority
EP
European Patent Office
Prior art keywords
pressure
pressing unit
unit according
shoe
pressing
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.)
Granted
Application number
EP08168942A
Other languages
German (de)
English (en)
Other versions
EP2085513B1 (fr
Inventor
Christian Müller
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 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 Patent GmbH filed Critical Voith Patent GmbH
Priority to PL08168942T priority Critical patent/PL2085513T3/pl
Publication of EP2085513A1 publication Critical patent/EP2085513A1/fr
Application granted granted Critical
Publication of EP2085513B1 publication Critical patent/EP2085513B1/fr
Active 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

Definitions

  • the invention relates to a pressing unit for a press roll, which has an axially extending contact shoe, which is mounted on a support, wherein the contact shoe against the carrier in a pressing direction linearly displaceable and between the contact shoe and the carrier at least one active pressure unit is arranged.
  • the invention also relates to a press roll with a Anpressmaschine invention and their use.
  • the pressure shoe extends generally over the entire press nip between the press roll and a counter roll. Temperature differences, the internal pressure of the rolls, an uneven stiffness of the counter roll and the weight-related sag of the rolls lead to an uneven line cross-section in the press nip.
  • the object of the invention is therefore to improve the producible with such Anpressech pressure profile with the least possible effort.
  • this object is achieved in that a plurality of axially juxtaposed transmission elements are present between the printing unit and the pressure shoe.
  • the transmission elements give the contact shoe in the circumferential direction the required stable support, while they hardly affect the adaptability of the contact shoe to a counter surface in the axial direction.
  • the transmission elements should be dimensionally stable, in particular in the pressing direction and preferably made of steel, aluminum or a plastic.
  • the transmission elements are mounted at least slightly displaceable in the axial direction and have little play with each other.
  • the pressure shoe should be relatively flexible.
  • the pressure shoe in the pressing direction has an average thickness between 5 and 30, preferably between 15 and 20 mm and consists of aluminum or an aluminum alloy.
  • the press shoe In order to be able to reopen a press nip quickly and easily, the press shoe should be coupled to the carrier via a return element, which can easily be achieved with spring elements in a known manner.
  • At least one flexible, preferably axially over the entire contact pressure shoe extending balance plate is present between the transmission elements and the printing unit.
  • the pressure unit should be formed by a plurality of axially juxtaposed and preferably separately controllable pressure elements.
  • the number of axially juxtaposed transmission elements is greater than the number of axially juxtaposed pressure elements.
  • the printing unit of several, in the circumferential direction of the press roll arranged side by side and preferably separately controllable pressure elements is formed.
  • the printing unit is formed by only one printing element.
  • the pressure elements have hitherto been formed in each case by a piston-cylinder arrangement which can be acted upon by a pressure fluid.
  • the pressure elements are each formed by a flexible pressure body, which has at least one cavity, which for generating the pressing force via an increase in volume of the pressure hull with a pressurized fluid can be acted upon.
  • the press shoe should have a concave pressing surface in the circumferential direction of the press roll and the press roll should have a rotatable and preferably flexible roll mantle.
  • Prolonged press gaps are also associated with a longer residence time of the material web in the press nip, which may be advantageous in particular in the case of smoothing or dewatering the same.
  • the pressing unit presses the roll shell to form a press nip in the direction of a counter roll.
  • the press roll according to the invention is preferably used in a machine for producing and / or finishing a paper, board, tissue or another fibrous web.
  • FIG. 1 shows a schematic partial cross section through a press arrangement for dewatering a fibrous web 10, in particular a tissue web.
  • the press nip is formed by a press roll in the form of a shoe press roll and a cylindrical counter roll 3.
  • the fibrous web 10 runs here by way of example with a lower, water-absorbing press felt 14. After the press nip, the fibrous web 10 adheres to the smooth lateral surface of the counter roll 3 and can be removed therefrom with a creping doctor.
  • the press roll is formed by a flexible roll shell 2, which is pressed by a Anpress unit with a pressure shoe 1 in the pressing direction 9 to the counter roll 3.
  • the pressure shoe 1 has a concave pressing surface 12.
  • the pressing unit is mounted on an axially extending through the rotatable roll shell 2, stationary support 7.
  • the contact pressure of the contact shoe 1 takes place here via two juxtaposed in the circumferential direction of the press roll and with respect to the contact pressure separately controllable pressure elements 5.6.
  • These pressure elements 5,6 are each formed here by a flexible pressure body in the form of an axially extending pressure hose.
  • each pressure hose is connected to a source of pressurized fluid, so that it can be acted upon by a volume increase of the pressure hose with a pressure fluid, in particular pressure oil for generating the pressing force.
  • the pressure element may, for example, instead of the elastic walls also have foldable, rigid walls to allow a change in volume.
  • the pressure shoe 1 is made flexible, made of aluminum and has a thickness in the pressing direction 9 between 15 and 20 mm. This flexibility allows a comprehensive adaptation to the contour of the counter roll. 3
  • the flexurally soft pressure shoe 1 allows an optimal adaptation to the shape of the counter roller 3 via the contact pressure with the two flexible pressure elements 5, 6.
  • a row of axially adjacent transmission elements 4 is located between the pressure elements 5, 6 and the pressure shoe 1.
  • These transmission elements 4 are stiff compared to the pressure shoe and made of plastic or metal.
  • the pressure profile in the circumferential direction, in particular in the transition region between the two pressure elements 5,6 is made uniform.
  • the transmission elements 4 are slightly displaceable in the axial direction in a guide. A clearance of about 0.2 mm between the transmission elements 4 allows the independent movement of the transmission elements 4 in the pressing direction.
  • the pressure shoe 1 is connected via a return element 8 in the form of a known return spring to the carrier 7.
  • a compensating plate 11 which extends over the entire pressure shoe 1.

Landscapes

  • Paper (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Finger-Pressure Massage (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP08168942A 2008-01-31 2008-11-12 Unité de pression Active EP2085513B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08168942T PL2085513T3 (pl) 2008-01-31 2008-11-12 Jednostka dociskowa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008000199A DE102008000199A1 (de) 2008-01-31 2008-01-31 Anpresseinheit

Publications (2)

Publication Number Publication Date
EP2085513A1 true EP2085513A1 (fr) 2009-08-05
EP2085513B1 EP2085513B1 (fr) 2011-09-28

Family

ID=40577968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08168942A Active EP2085513B1 (fr) 2008-01-31 2008-11-12 Unité de pression

Country Status (4)

Country Link
EP (1) EP2085513B1 (fr)
AT (1) ATE526450T1 (fr)
DE (1) DE102008000199A1 (fr)
PL (1) PL2085513T3 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010028923A1 (fr) * 2008-09-15 2010-03-18 Voith Patent Gmbh Unité de serrage pour une machine à papier, à carton ou à papier mousseline
WO2012112117A1 (fr) 2011-02-18 2012-08-23 Metso Paper Karlstad Ab Dispositif presse à ligne de contact étendue, machine à papier et procédé permettant de faire fonctionner un dispositif presse
CN103946447A (zh) * 2011-12-07 2014-07-23 瓦尔梅特有限公司 造纸机、延长轧辊和生产薄纸的方法
US8871060B2 (en) 2011-07-12 2014-10-28 Valmet Ab Method and a machine for producing a structured fibrous web of paper
EP2896743A1 (fr) 2014-01-20 2015-07-22 Valmet S.p.A. Procédé et machine de fabrication d'une bande de papier de soie
DE102014208159A1 (de) 2014-04-30 2015-11-05 Voith Patent Gmbh Anpresseinheit
CN108166303A (zh) * 2017-12-22 2018-06-15 江苏华东造纸机械有限公司 靴式压榨加载装置
WO2018114467A1 (fr) 2016-12-19 2018-06-28 Valmet Aktiebolag Procédé de fabrication de papier mince
WO2019201861A1 (fr) 2018-04-19 2019-10-24 Valmet Aktiebolag Procédé et machine de production d'une bande de tissu

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2839074B1 (fr) 2012-04-19 2016-03-09 Valmet Aktiebolag Rouleau pour presse à pince allongée, presse à pince allongée, machine à papier et procédé de fonctionnement de la presse à pince allongée
SE542214C2 (en) 2018-10-12 2020-03-10 Valmet Oy A tissue paper making machine and a method of operating a tissue paper making machine
US20240011222A1 (en) 2020-10-21 2024-01-11 Valmet Aktiebolag A yankee drying cylinder and a tissue paper making machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6045658A (en) * 1998-06-03 2000-04-04 Beloit Technologies, Inc. Extended nip press apparatus
WO2004079090A1 (fr) * 2003-03-04 2004-09-16 Metso Paper, Inc. Procede et dispositif de compression d'une bande de papier
WO2005042834A1 (fr) 2003-10-31 2005-05-12 Voith Paper Patent Gmbh Dispositif de pression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6045658A (en) * 1998-06-03 2000-04-04 Beloit Technologies, Inc. Extended nip press apparatus
WO2004079090A1 (fr) * 2003-03-04 2004-09-16 Metso Paper, Inc. Procede et dispositif de compression d'une bande de papier
WO2005042834A1 (fr) 2003-10-31 2005-05-12 Voith Paper Patent Gmbh Dispositif de pression

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010028923A1 (fr) * 2008-09-15 2010-03-18 Voith Patent Gmbh Unité de serrage pour une machine à papier, à carton ou à papier mousseline
WO2012112117A1 (fr) 2011-02-18 2012-08-23 Metso Paper Karlstad Ab Dispositif presse à ligne de contact étendue, machine à papier et procédé permettant de faire fonctionner un dispositif presse
US8673118B2 (en) 2011-02-18 2014-03-18 Valmet Aktiebolag Press device with an extended nip, a paper making machine and a method of operating a press device
US8871060B2 (en) 2011-07-12 2014-10-28 Valmet Ab Method and a machine for producing a structured fibrous web of paper
CN103946447B (zh) * 2011-12-07 2017-01-18 维美德瑞典公司 造纸机和生产薄纸的方法
CN103946447A (zh) * 2011-12-07 2014-07-23 瓦尔梅特有限公司 造纸机、延长轧辊和生产薄纸的方法
CN104831576B (zh) * 2011-12-07 2017-05-17 维美德瑞典公司 造纸机、延长轧辊和生产薄纸的方法
CN104831576A (zh) * 2011-12-07 2015-08-12 维美德瑞典公司 造纸机、延长轧辊和生产薄纸的方法
EP2910679A1 (fr) 2011-12-07 2015-08-26 Valmet Aktiebolag Rouleau à pincement augmenté pour une machine de fabrication de papier et procédé de production d'un papier de soie
WO2015107094A1 (fr) 2014-01-20 2015-07-23 Valmet S.P.A. Procédé et machine permettant de fabriquer une feuille continue de papier de soie
EP2896743A1 (fr) 2014-01-20 2015-07-22 Valmet S.p.A. Procédé et machine de fabrication d'une bande de papier de soie
DE102014208159A1 (de) 2014-04-30 2015-11-05 Voith Patent Gmbh Anpresseinheit
WO2018114467A1 (fr) 2016-12-19 2018-06-28 Valmet Aktiebolag Procédé de fabrication de papier mince
CN108166303A (zh) * 2017-12-22 2018-06-15 江苏华东造纸机械有限公司 靴式压榨加载装置
WO2019201861A1 (fr) 2018-04-19 2019-10-24 Valmet Aktiebolag Procédé et machine de production d'une bande de tissu

Also Published As

Publication number Publication date
PL2085513T3 (pl) 2012-02-29
DE102008000199A1 (de) 2009-08-06
ATE526450T1 (de) 2011-10-15
EP2085513B1 (fr) 2011-09-28

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