EP0331813B1 - Vorrichtung zum Halten einer Trennlamelle - Google Patents

Vorrichtung zum Halten einer Trennlamelle Download PDF

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Publication number
EP0331813B1
EP0331813B1 EP88121091A EP88121091A EP0331813B1 EP 0331813 B1 EP0331813 B1 EP 0331813B1 EP 88121091 A EP88121091 A EP 88121091A EP 88121091 A EP88121091 A EP 88121091A EP 0331813 B1 EP0331813 B1 EP 0331813B1
Authority
EP
European Patent Office
Prior art keywords
separating
holding strips
pressure chamber
pressure
holding
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
EP88121091A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0331813A1 (de
Inventor
Otto Ing. Grad. Hildebrand
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.)
Sulzer Escher Wyss GmbH
Original Assignee
Sulzer Escher Wyss 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 Sulzer Escher Wyss GmbH filed Critical Sulzer Escher Wyss GmbH
Priority to AT88121091T priority Critical patent/ATE77858T1/de
Publication of EP0331813A1 publication Critical patent/EP0331813A1/de
Application granted granted Critical
Publication of EP0331813B1 publication Critical patent/EP0331813B1/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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/028—Details of the nozzle section

Definitions

  • the invention relates to a device for holding a separating lamella on the multi-layer headbox of a paper machine, which separating lamella is fastened to a separating element which divides a nozzle space of the headbox and is used for further keeping the layers of material separate over a distance in the running direction of the paper machine, the device having an upper and a has lower retaining strip which are designed for clamping or enclosing a part of the separating lamella between them.
  • the separating lamella is made of a flexible material and is mounted on the separating element at its point pointing in the outlet direction at a connection point by means of a device.
  • a relatively cumbersome and time-consuming assembly is necessary to attach or remove the separating lamella. This is necessary when changing the separating lamella with changing demands on the length of the separating lamella, viewed in the outlet direction, to adapt to various work tasks of the paper machine or after wear of the separating lamella during maintenance.
  • a known arrangement of the separating lamella is e.g. shown in DE-PS 32 27 218.
  • a headbox which has a partition to enable the multilayer.
  • this partition is rigidly connected to the side walls of the headbox.
  • a bayonet lock that can be braced by an elastically deformable pressure chamber is used to connect these parts.
  • this version is complex to build and operate and only allows an angular position. Constant pressure in said pressure chamber is required during headbox operation.
  • the aim of the invention is to enable a quick change of the separating lamella without a complicated and time-consuming assembly.
  • the two retaining strips are fastened to the separating element on the device according to the invention, a pressure chamber of a pressure device which can be acted upon by a pressure medium being provided between the retaining strips, as a result of which the retaining strips can be expanded relative to one another.
  • a pressure in the pressure chamber Pressure device gap the holding strips apart and leave a space between them that is necessary for attaching or detaching the separating lamella between the holding strips.
  • the retaining strips come into contact with one another, as a result of which the separating lamella used is held in place in front of the nozzle gap of the headbox.
  • the device 1 for holding a separating lamella 2 belongs to a multi-layer headbox of a paper machine which e.g. is intended for the production of multilayer tissue papers.
  • a two-layer headbox is shown schematically simplified.
  • the separating lamella 2 is fastened to a separating element 4 which divides a nozzle chamber 3 of the headbox in a known manner and projects outwards through a nozzle gap 5 between an upper lip 31 and a lower lip 32.
  • the separating lamella 2 can serve to further separate the two layers of material in this case after leaving the divided nozzle space 3 over a distance in the running direction of the paper machine.
  • the separating lamella 2 being shown shortened in the machine direction.
  • the actual length of the line or the separating lamella 2 is adapted to the respective operating conditions of the paper machine or properties of the layers of material.
  • the device 1 has an upper holding strip 6 and a lower holding strip 7, which are fastened to the separating element 4 via a connection point 14 without a height difference between the fabric-side surfaces of the separating element 4 and the holding strips 6 and 7.
  • a dovetail connection is provided at the connection point 14.
  • the attachment has mutually arranged screws 15 which join and press the retaining strips together and thereby give them pretension. Instead of the screws 15, rivets can also be used.
  • the holding strips 6 and 7 run continuously over the entire width of the separating element 4 and are designed to hold the separating lamella 2 between them.
  • grooves 21 are also provided, which are designed on the surfaces of the holding strips 6 and 7 facing the separating lamella. A tunnel-like space is thus formed, in which a fastening edge 22 of the separating lamella 2 can be enclosed.
  • a pressure chamber 8 of a pressure device which can be acted upon by a pressure medium and which serves to spread the holding strips 6 and 7 relative to one another.
  • the holding strips 6 and 7 are spread so far that the separating lamella 2 can be removed or used. This is particularly shown in Fig. 2.
  • the pressure chamber 8 has the shape of a groove between the holding strips 6 and 7 or in them, which is lined with a sealing lining 9.
  • These Lining 9 is made of an elastic, impervious film.
  • the space of the pressure chamber 8 enveloped by the lining 9 is connected to a pressure medium source, not shown, via lines 10 and 11 for the pressurizing medium which are designed as bores between the holding strips 6 and 7 or in the separating element 4.
  • the relevant connections are advantageously located on both sides of the separating element 4. It is also possible to flush the system from one side if necessary.
  • the holding strips 6 and 7 are pressed together by means of the screws 15 for pretensioning.
  • the retaining strips 6 and 7 are pressed together, the retaining strips in the region of the screws 15 undergo elastic deformation.
  • the holding strips 6 and 7 are mirror images of one another. According to one embodiment, which is shown in FIGS. 1 and 2, the holding strips 6 and 7 end with a tip in the outlet direction of the fabric, so that at the point where the ends of the holding strips 6 and 7 lie against the separating lamella 2 come, there are no vortices in the material flow.
  • the holding strips 6 and 7 end bluntly with an edge 13 which is transverse to the outlet direction, so that at the point where the ends of the holding strips 6 and 7 lie against the separating lamella 2 come, a vortex forming stage is formed. This may be desirable in certain operating situations.
  • FIG. 4 This separating lamella 2 is on the end facing the holding strips 6 and 7 is provided with a wedge-shaped fitting part 23, seen in the vertical longitudinal section. At its highest point, this fitting part 23 is exactly as high as the ends of the holding strips 6 and 7 that have the edge 13. When this separating lamella is clamped in, there is therefore no swirl-forming step between the fitting part 23 and the holding strips 6 and 7.

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  • Paper (AREA)
EP88121091A 1988-03-09 1988-12-16 Vorrichtung zum Halten einer Trennlamelle Expired - Lifetime EP0331813B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88121091T ATE77858T1 (de) 1988-03-09 1988-12-16 Vorrichtung zum halten einer trennlamelle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3807629A DE3807629A1 (de) 1988-03-09 1988-03-09 Vorrichtung zum halten einer trennlamelle
DE3807629 1988-03-09

Publications (2)

Publication Number Publication Date
EP0331813A1 EP0331813A1 (de) 1989-09-13
EP0331813B1 true EP0331813B1 (de) 1992-07-01

Family

ID=6349189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121091A Expired - Lifetime EP0331813B1 (de) 1988-03-09 1988-12-16 Vorrichtung zum Halten einer Trennlamelle

Country Status (5)

Country Link
US (1) US4891100A (enrdf_load_stackoverflow)
EP (1) EP0331813B1 (enrdf_load_stackoverflow)
AT (1) ATE77858T1 (enrdf_load_stackoverflow)
CA (1) CA1318536C (enrdf_load_stackoverflow)
DE (1) DE3807629A1 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501798C2 (sv) * 1993-09-13 1995-05-15 Valmet Karlstad Ab Flerskiktsinloppslåda
DE4440079C2 (de) * 1994-11-10 1997-10-02 Voith Sulzer Papiermasch Gmbh Mehrschichten-Stoffauflauf
US6425984B2 (en) * 1995-10-20 2002-07-30 Institute Of Paper Science And Technology, Inc. Layered fiber structure in paper products
DE19652985A1 (de) * 1996-12-19 1997-05-22 Voith Sulzer Papiermasch Gmbh Trennelement eines Mehrschichtenstoffauflaufes
US6146501A (en) * 1997-12-15 2000-11-14 Kimberly Clark Worldwide Cross-machine direction stiffened dividers for a papermaking headbox
AT406171B (de) * 1998-02-05 2000-03-27 Andritz Patentverwaltung Vorrichtung zur zufuhr einer faserstoffsuspension auf eine entwässerungseinrichtung
FI115230B (fi) * 2000-11-29 2005-03-31 Metso Paper Inc Sovitelma turbulenssilevyn kiinnittämiseksi perälaatikkoon
US6521095B1 (en) 2002-02-05 2003-02-18 Metso Paper, Inc. Composite vane hinge in a headbox
EP2199459A1 (de) * 2008-12-16 2010-06-23 Voith Patent GmbH Blattbildungssystem für eine Maschine zur Herstellung einer mehrschichtigen Faserstoffbahn

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA936722A (en) * 1970-08-31 1973-11-13 A. Betley Raymond Headbox slice chamber
FI58364C (fi) * 1977-07-13 1981-01-12 Tampella Oy Ab Matningsanordning foer en banformningsmaskin foer framstaellning av en tvao- eller flerskiktig fiberbana
SE421328B (sv) * 1978-04-25 1981-12-14 Karlstad Mekaniska Ab Forfarande och anordning for bildande av en flerskiktsmeldstrale
AT377026B (de) * 1980-12-19 1985-01-25 Escher Wyss Gmbh Stoffauflauf fuer eine papiermaschine
US4358342A (en) * 1981-01-19 1982-11-09 Kimberly-Clark Corporation Papermaking headbox having rigid lips and actvating means
DE3107875A1 (de) * 1981-03-02 1983-07-07 Escher Wyss Gmbh, 7980 Ravensburg Stoffauflauf fuer eine papiermaschine
US4436587A (en) * 1982-02-23 1984-03-13 Ab Karlstads Mekaniska Werkstad Method for producing multilayer paper
DE3227218C2 (de) * 1982-07-21 1984-10-18 Escher Wyss Gmbh, 7980 Ravensburg Mehrlagenstoffauflauf
DE3607306A1 (de) * 1986-03-06 1987-09-10 Voith Gmbh J M Stoffauflauf fuer die herstellung von faserstoffbahnen

Also Published As

Publication number Publication date
ATE77858T1 (de) 1992-07-15
EP0331813A1 (de) 1989-09-13
DE3807629C2 (enrdf_load_stackoverflow) 1989-12-21
DE3807629A1 (de) 1989-09-21
US4891100A (en) 1990-01-02
CA1318536C (en) 1993-06-01

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