EP0575353B1 - Pressanordnung für eine fortlaufende bahn - Google Patents

Pressanordnung für eine fortlaufende bahn Download PDF

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Publication number
EP0575353B1
EP0575353B1 EP92904341A EP92904341A EP0575353B1 EP 0575353 B1 EP0575353 B1 EP 0575353B1 EP 92904341 A EP92904341 A EP 92904341A EP 92904341 A EP92904341 A EP 92904341A EP 0575353 B1 EP0575353 B1 EP 0575353B1
Authority
EP
European Patent Office
Prior art keywords
shoe
roll
press
nip
belt
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
EP92904341A
Other languages
English (en)
French (fr)
Other versions
EP0575353A1 (de
Inventor
Erik Nykopp
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.)
Individual
Original Assignee
Individual
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 SE9100213A external-priority patent/SE467668B/sv
Priority claimed from SE9200200A external-priority patent/SE9200200D0/xx
Application filed by Individual filed Critical Individual
Publication of EP0575353A1 publication Critical patent/EP0575353A1/de
Application granted granted Critical
Publication of EP0575353B1 publication Critical patent/EP0575353B1/de
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 present invention concerns a press arrangement for a moving web, comprising a cylindrical roll which forms a press zone with a glide belt supported by a shoe so formed that it brings the glide belt into press contact with a part of the roll circumference to form a nip and including lubricating means for obtaining a lubricating film between the belt and the shoe, and a counter roll located on the opposite side of the shoe from the press roll.
  • One main purpose with the present invention is to achieve a press arrangement of the general type indicated in the introduction which makes it possible to adjust the position of the shoe around the center line of the press roll. Another purpose is to obtain a press arrangement which can be realized with regular and thus relatively inexpensive rolls.
  • loading arrangements inside the shoe to deform it so as to compensate for roll deflection and achieve desired load distribution throughout the width of the pressure zones between the shoe and the rolls.
  • the surface of the shoe in the area of the nip is in continuous contact with the belt via a lubricating film,from the entrance of the nip and the lubricating means including openings for introducing the lubricant under pressure in the load zones and canals for pressure equalization and removal of lubricant.
  • the shoe is adjustable within limits around the center line of the press roll. This allows adjustment to a desired pressure profile in the direction of motion in the nip.
  • Figs. 1 and 2 show a press arrangement for a moving web 2.
  • the arrangement includes a pressnip for receiving the moving web, formed between a cylindrical press roll 4 and a glide belt 6.
  • the glide belt is slidingly supported on and wraps a shoe 8 with such a form that it makes the glide belt follow a part of the circumference of roll 4 to form the nip.
  • Supply mechanisms 10 are provided to supply lubricant for a lubricating film via canals 12 between the glide belt 6 and shoe 8.
  • the shoe 8 is supported by counter roll 14 which is situated on the opposite side of the shoe relative to the press roll 4, whereby the side 15 of the shoe 8 facing the counter roll 14 is non-concave.
  • loading mechanisms 16 to enable deforming of the shoe to compensate for deflection of the press roll 4 and the counter roll 14 in operation, so that desired loads always are maintained throughout the width.
  • These loading mechanisms 16 may be e.g. pressure cylinders or bellows.
  • a number of bellows 18 along the width of the shoe 8 are shown in fig. 2.
  • Arrows 20 indicate the external loads on the roll journals 22, which cause said rolls to deflect in operation.
  • nip area As well as lubricant supply to the arrangement according to the invention shall now be described in more detail with reference to figs. 3 and 4.
  • a supply duct 30 for lubricant is connected with nozzles 32 for the supply of lubricant under pressure between the shoe 8 and glide belt 6 in the nip area.
  • a further supply duct 34 with nozzles 36, as well as equallizing canals 38 are also shown.
  • the duct 30 is connected to a lubricant supply pipe 40, whereby the corresponding return pipe is shown at 42.
  • a lubricant supply pipe 40 With 44 is indicated an endring which rotates with the glide belt.
  • the endring 44 is fixed with a connection including a stopring 46 and a bolt 48 screwed into the flange 50 on the shoe 8.
  • the shoe 8 is further adjustable within limits around the centerline 51 of the press roll 4 which is schematically illustrated in fig. 5 with arrow 52. This adjustment of the shoe 8 can be realized in a manner not shown here by introducing forces on the endflanges 50.
  • the adjustability of the shoe 8 makes it possible to optimize web geometry before and after the nip, as well as to influence the pressure profile in the nip. The latter is demonstrated by a pressure diagram 54 drawn onto the figure.
  • the invention can be applied e. g. to remove water from a moving web in a papermachine, whereby the web is fed into the nip in a conventional manner together with one or two felts which receive the water. Another area of use is surface finishing of the web further on in the process.

Landscapes

  • Paper (AREA)
  • Press Drives And Press Lines (AREA)

Claims (4)

  1. Preßanordnung für eine sich bewegende Bahn (2) mit einem Preßspalt, der zwischen einer zylindrischen Preßwalze (4) und einem Gleitriemen (6) gebildet ist, der von einem Schuh (8) verschieblich gehalten ist und diesen umschließt, wobei der Schuh (8) eine derartige Form besitzt, daß er den Riemen zur Bildung des Spalts in Kontakt mit einem Abschnitt des Umfangs der Walze (4) hält, wobei Fördervorrichtungen (10,12) vorgesehen sind, die Gleitmittel zur Bildung eines Gleitmittelfilms zwischen den Riemen und den Schuh fördern, und wobei der Schuh (8) von einer Gegenwalze (14) gehalten ist, die auf der relativ zu der Preßwalze (4) entgegengesetzten Seite des Schuhs angeordnet ist, dadurch gekennzeichnet, daß die der Gegenwalze (14) zugewandte Seite (15) des Schuhs (8) nicht-konkav ist.
  2. Preßanordnung nach Anspruch 1, gekennzeichnet durch eine Belastungsvorrichtung (16) innerhalb des Schuhs (8) zu dessen Deformierung, um das Ausweichen der Preßwalze (4) und der Gegenwalze (14) bei Betrieb zu kompensieren, so daß über die Breite stets gewünschte Belastungen beibehalten werden.
  3. Preßanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schuh (8) in Grenzen um die Mittelachse (51) der Preßwalze (4) einstellbar ist.
  4. Preßanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß diejenige Seite des Schuhs (8), die der Außenseite (24) des Gleitriemens (6) zugewandt ist und den den Spalt bildenden Abschnitt umfaßt, über den Gleitmittelfilm zumindest in den Übertragungsbereichen (28) des Spaltabschnitts in ununterbrochenem Kontakt mit dem Gleitriemen (6) steht, und daß die Fördervorrichtungen (30) Düsen (32) zur Zuführung des Gleitmittels unter Druck zwischen den Schuh (8) und den Gleitriemen (6) in dem Spaltbereich und Kanäle zum Druckausgleich und Ableiten des Gleitmittels umfassen.
EP92904341A 1991-01-24 1992-01-24 Pressanordnung für eine fortlaufende bahn Expired - Lifetime EP0575353B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9100213A SE467668B (sv) 1991-01-24 1991-01-24 Pressmekanism foer en roerlig fiberbana
SE9100213 1991-01-24
SE9100200 1991-08-15
SE9200200A SE9200200D0 (sv) 1992-01-15 1992-01-15 Pressmekanism foer roerlig fiberbana
PCT/SE1992/000041 WO1992013134A1 (en) 1991-01-24 1992-01-24 Press arrangement for a moving web

Publications (2)

Publication Number Publication Date
EP0575353A1 EP0575353A1 (de) 1993-12-29
EP0575353B1 true EP0575353B1 (de) 1995-08-02

Family

ID=26660974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92904341A Expired - Lifetime EP0575353B1 (de) 1991-01-24 1992-01-24 Pressanordnung für eine fortlaufende bahn

Country Status (4)

Country Link
EP (1) EP0575353B1 (de)
AT (1) ATE125893T1 (de)
DE (1) DE69203860T2 (de)
WO (1) WO1992013134A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8062481B2 (en) 2006-04-21 2011-11-22 Metso Paper Karlstad Ab Support body for an apparatus having an extended nip for the treatment of a fibre web

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0659223B1 (de) * 1992-09-09 2000-02-09 NYKOPP, Erik A. Gleitstützelement zum pressen einer sich bewegenden bahn
US5400707A (en) * 1992-10-09 1995-03-28 Champion International Corporation Apparatus for finishing a continuous sheet of paper
US6007921A (en) * 1992-10-09 1999-12-28 Champion International Corporation Continuous finishing belt capable of finishing surface of a web of paper
KR960703446A (ko) * 1993-05-27 1996-08-17 니코프 에릭 이동웨브 압착장치(pressing arrangement for a mouing web)
US5733415A (en) * 1996-08-01 1998-03-31 Beloit Technologies, Inc. Closed shoe press head indexing system
US6203307B1 (en) * 1997-08-28 2001-03-20 Champion International Corporation System for finishing surface of a web of paper having an improved continuous finishing belt
SE526787C2 (sv) 2003-10-21 2005-11-01 Metso Paper Karlstad Ab Elastiskt derformerbar stödkropp för en anordning med förlängt nyp för behandling av fiberbana och användning av sådan stödkropp
DE10351294A1 (de) * 2003-10-31 2005-06-02 Voith Paper Patent Gmbh Anpresseinrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431045A (en) * 1982-01-27 1984-02-14 Josefsson Lars G Apparatus for pressure treatment of a moving web
US4536255A (en) * 1983-12-07 1985-08-20 Beloit Corporation Extended nip press
FI82092C (fi) * 1989-03-22 1991-01-10 Valmet Paper Machinery Inc Laongnyppress.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8062481B2 (en) 2006-04-21 2011-11-22 Metso Paper Karlstad Ab Support body for an apparatus having an extended nip for the treatment of a fibre web

Also Published As

Publication number Publication date
DE69203860D1 (de) 1995-09-07
DE69203860T2 (de) 1996-05-02
EP0575353A1 (de) 1993-12-29
WO1992013134A1 (en) 1992-08-06
ATE125893T1 (de) 1995-08-15

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