EP0674043A1 - Dispositif pour le traitement d'une bande fibreuse - Google Patents

Dispositif pour le traitement d'une bande fibreuse Download PDF

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Publication number
EP0674043A1
EP0674043A1 EP95102671A EP95102671A EP0674043A1 EP 0674043 A1 EP0674043 A1 EP 0674043A1 EP 95102671 A EP95102671 A EP 95102671A EP 95102671 A EP95102671 A EP 95102671A EP 0674043 A1 EP0674043 A1 EP 0674043A1
Authority
EP
European Patent Office
Prior art keywords
piston
pressing
running direction
support element
cylinder unit
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
EP95102671A
Other languages
German (de)
English (en)
Other versions
EP0674043B1 (fr
Inventor
Andreas Meschenmoser
Ulrich Wieland
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 Sulzer Papiermaschinen GmbH
Original Assignee
Voith Sulzer Papiermaschinen 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 Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0674043A1 publication Critical patent/EP0674043A1/fr
Application granted granted Critical
Publication of EP0674043B1 publication Critical patent/EP0674043B1/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

Definitions

  • the invention relates to a device for treating a fibrous web according to the preamble of claim 1.
  • the invention is used in particular for dewatering and smoothing a fibrous web.
  • E-PS 345 500 and E-PS 345 501 Such devices, which aim to simplify the structural design and assembly, are already known from E-PS 345 500 and E-PS 345 501.
  • a support shoe is carried by piston rods without a rigid mechanical connection and supported horizontally by a bearing. Because of the lack of a mechanical connection, the supply of a pressure fluid to the hydrostatic bearing pockets of the support shoe proves to be complicated.
  • the invention is therefore based on the object of providing a device for treating a fibrous web which, in addition to the advantages of the prior art mentioned, also ensures that the pressure fluid can be easily supplied to the bearing pockets of the support element.
  • the pressing device has a plurality of piston-cylinder units. This means that the pressing device has either only one support element which is pressed on via a plurality of piston-cylinder units or a plurality of support elements which are pressed on at least one piston-cylinder unit each.
  • the belt can be lubricated hydrodynamically and / or hydrostatically via the pressure device. If there is hydrostatic lubrication, the inventive design makes it possible to use the bearing pockets or the like in the running surface of the support element facing the belt. to be supplied via a connection to the pressure chambers of the piston-cylinder units.
  • the pressing device forms a concave pressing surface and the opposite pressing surface is a rotating counter roll.
  • the support element has at least two piston-cylinder units which are arranged one behind the other in the web running direction and can be supplied with different pressures. If there are several piston-cylinder units arranged transversely to the web running direction, there is also the possibility To change the contact pressure profile transversely to the web running direction via a different pressure supply.
  • a correction of the contact pressure profile is also possible, however, if the end limit of the stop can be changed in the direction of web travel.
  • the pressure device 6 consists of at least one support element 7, which forms a concave pressure surface and has at least one piston-cylinder unit 8, which acts towards the pressure surface 3 and is supplied with hydraulic pressure medium. It is entirely possible that a plurality of support elements 7 are arranged next to one another in or transversely to the web running direction 20 and / or these in turn have a plurality of piston-cylinder units 8 likewise arranged next to one another in or transversely to the web running direction 20. This offers advantages in particular in the absorption of the transverse forces acting in the web running direction 20 and the differentiated influence on the fibrous web 1 with regard to the contact pressure.
  • the support element 7 has two piston-cylinder units 8, which are arranged one behind the other in the web running direction 20 and can be supplied with different pressure via separate feed lines 19 arranged in the carrier part 21.
  • the pistons 10 of the piston-cylinder units 8 are in this case firmly connected to a carrier part 21 mounted in a frame of the drainage device.
  • the support element 7, with the two cylinders 11 attached to it, is displaceable on the piston 10 in the pressing direction and in the web running direction 20.
  • FIG. 2 shows a support element 7 with only one piston-cylinder unit 8 in the web running direction 20, although here too there may be several piston-cylinder units 8 arranged transversely to the web running direction 20 and influencing the contact pressure profile.
  • the cylinder 11 is firmly connected to the carrier part 21 here. Accordingly, the support element 7 with the piston 10 attached to it is displaceable in the pressing direction and in the web running direction 20 in the cylinder 11.
  • the sealing of the pressure chamber 17 of the respective piston-cylinder unit 8 is achieved in both cases by means of a disk 13 which runs transversely to the pressing direction, is displaceable in the web running direction 20 with respect to the piston 10 and is fixed by the latter in the pressing direction.
  • the disk 13 provided with an opening is located in a recess 15 of the piston 10, which offers a freedom of movement for the disk 13 in the web running direction 20.
  • the disk 13 has an additional sealing element 14 on the contact surface with the respective cylinder 11.
  • the pressure medium supply is secured via a feed line 19 located in the carrier part 21, which is connected to the pressure chamber 17 via a passage in the cylinder 11 or in the piston 10 .
  • the support element 7 is movable within certain limits in the web running direction 20, it can align itself according to the opposite pressing surface 3.
  • An end limit is given by a stop 12 attached to the carrier part 21.
  • this stop 12 can be designed to be variable in relation to the local position of the stop surface in the web running direction 20 without any problems, so that the contact pressure profile can be influenced by the changing position of the support element.
  • the impermeable band 4 is lubricated hydrodynamically and hydrostatically via the pressing device 6.
  • the support element 7 in the running surface directed towards the belt 4 may have several storage pockets 16 transversely to the web running direction 20 and at least one in the web running direction 20.
  • These bearing pockets 16 are connected to the pressure chambers 17 of the piston-cylinder units 8, the bearing pocket 16 in the example shown in FIG. 1 being replaced by one or more openings in bores 22 with a diameter of preferably 1 to 2 mm what should prevent damage to the tape 4.
  • the pressure medium heats up on the way along the support element 7, it is advantageous to protect the often temperature-sensitive tape 4 by removing it, for example, at the end of the pressing device 6 on the web exit side according to FIG.
  • the band 4 can also be cooled by spraying on appropriately tempered pressure or lubricant.
EP95102671A 1994-03-18 1995-02-24 Dispositif pour le traitement d'une bande fibreuse Expired - Lifetime EP0674043B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4409316 1994-03-18
DE4409316A DE4409316C1 (de) 1994-03-18 1994-03-18 Langspaltpressvorrichtung zur Behandlung einer Faserstoffbahn

Publications (2)

Publication Number Publication Date
EP0674043A1 true EP0674043A1 (fr) 1995-09-27
EP0674043B1 EP0674043B1 (fr) 1997-05-07

Family

ID=6513188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95102671A Expired - Lifetime EP0674043B1 (fr) 1994-03-18 1995-02-24 Dispositif pour le traitement d'une bande fibreuse

Country Status (8)

Country Link
US (1) US5676799A (fr)
EP (1) EP0674043B1 (fr)
JP (1) JPH0835190A (fr)
AT (1) ATE152792T1 (fr)
CA (1) CA2144923A1 (fr)
DE (2) DE4409316C1 (fr)
ES (1) ES2102897T3 (fr)
FI (1) FI951268A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1319744A2 (fr) * 2001-12-17 2003-06-18 Andritz AG Procédé et dispositif de mesure et de réglage de pression de serrage dans la presse d'une machine à papier
EP1375741A2 (fr) * 2002-06-25 2004-01-02 Voith Paper Patent GmbH Dispositif et procédé pour influencer le profil de pression dans une presse
EP1431452A2 (fr) * 2002-12-17 2004-06-23 Eduard Küsters Maschinenfabrik GmbH & Co. KG Dispositif pour formation d'une presse à ligne de contact élargie

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622018A1 (de) * 1996-05-31 1997-12-04 Voith Sulzer Papiermasch Gmbh Schuhpresse
DE19631638A1 (de) * 1996-08-05 1998-02-12 Voith Sulzer Papiermasch Gmbh Pressenanordnung
SE510553C2 (sv) * 1997-09-30 1999-05-31 Valmet Karlstad Ab Skopress för en pappers- eller kartongmaskin
SE510610C2 (sv) * 1997-09-30 1999-06-07 Valmet Karlstad Ab Skopress för en pappers- eller kartongmaskin, samt en anpressningscylinderenhet för en sådan
US6042694A (en) * 1997-09-30 2000-03-28 Valmet-Karlstad Ab Shoe press
US6159342A (en) * 1997-09-30 2000-12-12 Valmet-Karlstad Ab Shoe press
SE511203C2 (sv) * 1997-10-14 1999-08-23 Valmet Corp Långnypspress samt långnypspressko till densamma
EP1194636A1 (fr) * 1999-07-09 2002-04-10 Metso Paper Karlstad Aktiebolag Dispositif de presse a semelle pour bande de fibres humide, et procede de presse de bande de fibres humide a vitesse de defilement elevee
US7172679B2 (en) * 1999-12-10 2007-02-06 Metso Paper, Inc. Press device having an extended press nip for pressing of a travelling paperboard web, and procedure for controlling the pressure curve in the machine direction by such press nip
SE515483C2 (sv) * 1999-12-10 2001-08-13 Valmet Karlstad Ab Pressanordning med förlängt pressnyp och förfarande för styrning av tryckkurvan i maskinriktning
SE516410C2 (sv) * 2000-05-29 2002-01-15 Valmet Karlstad Ab Press i en maskin för framställning av en kontinuerligt löpande bana av cellulosahaltigt fibermaterial och förfarande för att förändra tryckprofilen i en sådan press
US6517683B2 (en) * 2000-05-29 2003-02-11 Metso Paper Karlstad Ab Shoe press with movable guides to alter machine direction shoe position
WO2004001124A1 (fr) * 2002-06-25 2003-12-31 Voith Paper Patent Gmbh Dispositif pour modifier et/ou controler un profil de pression
US20050098290A1 (en) * 2002-06-25 2005-05-12 Voith Paper Patent Gmbh System and method for influencing and/or monitoring a press pressure profile
DE102004015997A1 (de) * 2004-04-01 2005-10-20 Voith Paper Patent Gmbh Breitnip-Kalander und Verfahren zum Satinieren einer Materialbahn in einem Breitnip
WO2006103400A1 (fr) * 2005-03-29 2006-10-05 Armourtest Limited Ameliorations des vetements de protection ou s’y rapportant
FI128724B (fi) * 2018-10-12 2020-11-13 Valmet Technologies Oy Hihnatela kuiturainakonetta varten

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2112086A (en) * 1981-12-23 1983-07-13 Kleinewefers Gmbh Hydrostatically supported roll
DE3317457A1 (de) * 1983-05-13 1984-11-15 J.M. Voith Gmbh, 7920 Heidenheim Presseinrichtung fuer bandfoermiges gut, insbesondere zum entwaessern einer papierbahn
WO1991017308A1 (fr) * 1990-05-08 1991-11-14 Valmet-Karlstad Ab Rouleau presseur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408119A1 (de) * 1984-02-06 1985-08-14 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Nasspresse zum entwaessern einer faserbahn
DE3705241A1 (de) * 1986-12-24 1988-07-07 Escher Wyss Gmbh Verfahren zur mechanisch-thermischen entwaesserung einer faserstoffbahn
SE461171C (sv) * 1988-05-25 1992-05-15 Valmet Paper Machinery Inc Press med laangt nyp foer pappers- eller kartongmaskiner
SE461154B (sv) * 1988-05-25 1990-01-15 Valmet Paper Machinery Inc Press med laangt nyp foer pappers- eller kartongmaskiner
DE4017433A1 (de) * 1989-10-11 1991-04-25 Escher Wyss Gmbh Walzenpresse
DE4113623C1 (fr) * 1991-04-26 1992-02-20 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4138788C2 (de) * 1991-11-26 1995-05-18 Escher Wyss Gmbh Vorrichtung zur Entwässerung einer Faserstoffbahn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2112086A (en) * 1981-12-23 1983-07-13 Kleinewefers Gmbh Hydrostatically supported roll
DE3317457A1 (de) * 1983-05-13 1984-11-15 J.M. Voith Gmbh, 7920 Heidenheim Presseinrichtung fuer bandfoermiges gut, insbesondere zum entwaessern einer papierbahn
WO1991017308A1 (fr) * 1990-05-08 1991-11-14 Valmet-Karlstad Ab Rouleau presseur

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1319744A2 (fr) * 2001-12-17 2003-06-18 Andritz AG Procédé et dispositif de mesure et de réglage de pression de serrage dans la presse d'une machine à papier
EP1319744A3 (fr) * 2001-12-17 2004-01-07 Andritz AG Procédé et dispositif de mesure et de réglage de pression de serrage dans la presse d'une machine à papier
EP1375741A2 (fr) * 2002-06-25 2004-01-02 Voith Paper Patent GmbH Dispositif et procédé pour influencer le profil de pression dans une presse
EP1375741A3 (fr) * 2002-06-25 2004-06-30 Voith Paper Patent GmbH Dispositif et procédé pour influencer le profil de pression dans une presse
EP1431452A2 (fr) * 2002-12-17 2004-06-23 Eduard Küsters Maschinenfabrik GmbH & Co. KG Dispositif pour formation d'une presse à ligne de contact élargie
EP1431452A3 (fr) * 2002-12-17 2004-06-30 Eduard Küsters Maschinenfabrik GmbH & Co. KG Dispositif pour formation d'une presse à ligne de contact élargie

Also Published As

Publication number Publication date
CA2144923A1 (fr) 1995-09-19
FI951268A (fi) 1995-09-19
ATE152792T1 (de) 1997-05-15
ES2102897T3 (es) 1997-08-01
DE4409316C1 (de) 1995-06-29
US5676799A (en) 1997-10-14
EP0674043B1 (fr) 1997-05-07
DE59500218D1 (de) 1997-06-12
JPH0835190A (ja) 1996-02-06
FI951268A0 (fi) 1995-03-17

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