EP1279765A1 - Procédé pour transferer une bande fibreuse et machine pour la fabrication d'une bande fibreuse - Google Patents

Procédé pour transferer une bande fibreuse et machine pour la fabrication d'une bande fibreuse Download PDF

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Publication number
EP1279765A1
EP1279765A1 EP02007873A EP02007873A EP1279765A1 EP 1279765 A1 EP1279765 A1 EP 1279765A1 EP 02007873 A EP02007873 A EP 02007873A EP 02007873 A EP02007873 A EP 02007873A EP 1279765 A1 EP1279765 A1 EP 1279765A1
Authority
EP
European Patent Office
Prior art keywords
pulper
web
press
water
section
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
EP02007873A
Other languages
German (de)
English (en)
Other versions
EP1279765B1 (fr
Inventor
Wolfgang Mayer
Ralf Rziha
Herbert Bosch
Manfred Kikowatz
Rainer Müller
Harald Sternitzke
Christian Liebrecht
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 Paper 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1279765A1 publication Critical patent/EP1279765A1/fr
Application granted granted Critical
Publication of EP1279765B1 publication Critical patent/EP1279765B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • 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
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/04—Paper-break control devices

Definitions

  • the invention relates to a method for operating a machine for the production of a fibrous web, in particular paper or cardboard web, in which the fibrous web is taken over in an endless belt running through the last press nip of the press section into the drying section, the endless belt for cleaning it and Conditioning is applied with splash water, the splash water is scraped off the endless belt by means of a scraper and fiber material accumulating during the web transfer process is collected in a pulper. It also relates to a corresponding machine for producing such a fibrous web.
  • paper from the press section into the dryer section must be collected in the pulper.
  • the water accumulating on the take-off scraper during normal operation e.g. approx. 200 l / min
  • the take-off scraper and the associated lubrication spray tube, as well as a so-called Enviro scan must be carried out when the machine is at a standstill be maintainable across the machine.
  • the dryer section must be completed in normal operation compared to the press section, ie air currents must not form via the pulper. When the paper is removed from the first cylinder of the dryer section, the air that has been dragged into the pulper by the paper web must be able to escape. The solution found must be able to cover both the press belt design and the felt design equally.
  • the aim of the invention is therefore to provide an improved method and an improved machine of the type mentioned at the outset which satisfy the requirements specified above in the most cost-effective and effective manner possible.
  • This object is achieved according to the invention by a method for operating a machine for the production of a fibrous web, in particular paper or cardboard web, in which the fibrous web is taken over by an endless belt running through the last press nip of the press section into the drying section, the endless Belt for the cleaning and conditioning of which spray water is applied, the spray water is scraped off the endless belt by means of a scraper and fibrous material arising during the web transfer process is collected in a pulper, and in which an adjustable scoop is used and this scoop between a in the area between the press section, Pulper and dryer section lying collection and sealing position, in which it collects the spray water generated during normal operation and seals the dryer section against the press section, ie prevents the formation of air currents over the pulper, and a Fr input position is adjusted in which the pulper for releases the fiber material that arises during the web transfer process and enables the extraction of air that is carried in at the web tee, in particular on the first cylinder of the dryer section.
  • a pivotable blade is
  • the pulper thus receives e.g. Bucket that can be swiveled via cylinders, which in normal operation collects the splashing water and "seals" the dryer section from the press section.
  • Bucket that can be swiveled via cylinders, which in normal operation collects the splashing water and "seals" the dryer section from the press section.
  • the bucket In the case of a transfer or when the first cylinder is knocked off, the bucket is pivoted, which opens the pulper and allows the air towed off at the web tee to be extracted.
  • a blade provided with at least one water inlet or connection and at least one water outlet, preferably a plurality of water outlet bores, is advantageously used.
  • the shovel should, in particular, offer the possibility of flushing away any paper that remains when necessary, which is possible, for example, via a water connection and water outlet bores.
  • a press belt or a felt can in particular be provided as the endless belt.
  • maintenance work on the scraper, on the device that supplies the spray water, in particular the spray tube, and / or on one or more others is provided in the area in question Devices, such as a so-called Enviro scan, introduced a separate catwalk, preferably swung in. This catwalk is adjusted or pivoted, for example, by hand winches and / or the like.
  • a machine for producing a fibrous web in particular paper or cardboard web, in which the fibrous web is taken over by an endless belt running through the last press nip of the press section into the drying section, which is sprayed with water for cleaning and conditioning and to which a scraper is assigned, and in which pulp material obtained during the web transfer process is collected in a pulper, a scoop being provided between a collecting and sealing position in the area between the press section, pulper and drying section, in which it does this during the normal operating splash water catches and seals the dryer section against the press section, ie prevents formation of air flows over the pulper, and a release position is adjustable, in which it releases the pulper for the fiber material arising during the web transfer process and enables the removal of air entrained in particular on the first cylinder of the dryer section when the web is knocked off.
  • FIGS. 1 and 2 each show a schematic partial representation of a machine 10 for producing a fibrous web, which can in particular be a paper or cardboard web.
  • the area of the interface between the press section 12, the dryer section 14 and a pulper 16 is shown in each case.
  • the fibrous web is taken into the drying section 14 by an endless belt 18 running through the last press nip of the press section 12.
  • a spray tube 20 is assigned, through which the endless belt 18 is sprayed with water.
  • a scraper 22 is assigned to the belt 18 in order to scrape off the spray water which occurs from the belt 18 during normal operation.
  • the resulting fibrous material is collected in the pulper 16.
  • a blade 26 which is preferably assigned to the pulper 16 is provided. This is pivotally mounted on a bracket 30 about an axis 28 extending in the cross-machine direction.
  • This blade 26 is in particular between a collecting and sealing position (see FIG. 1) located in the area between the press section 12, pulper 16 and drying section 14, in which it collects the spray water that occurs during normal operation and the drying section 14 opposite the press section 12 seals, ie prevents the formation of air flows over the pulper 16, and a release position (see FIG. 2) in which it releases the pulper 16 for the fiber material resulting from the web transfer process and the removal of air entrained in the web section, in particular at the first cylinder 24 of the dryer section 14 allows.
  • the blade 26 is above cylinder 32, i.e. especially hydraulic cylinders, adjustable.
  • the blade 26 can be provided with at least one water inlet or connection and at least one water outlet, preferably a plurality of water outlet bores.
  • the pulper 16 thus receives a blade 26 which can be pivoted via the cylinder 32 and which, in normal operation, collects the spray water and "seals" the drying section 14 from the press section 12.
  • the blade 26 is pivoted about the axis 28, as a result of which the pulper 16 is opened and an extraction of the introduced air is made possible when the web is tapped.
  • the shovel should offer the opportunity to wash away any remaining paper with water, which e.g. is achieved by the aforementioned water connection and the water outlet holes.
  • the endless belt 18 can in particular be formed by a press belt or a felt.
  • a separate adjustable, preferably pivotable, catwalk 34 can be provided for maintenance work on the scraper 22, on the spray tube 20 and / or on one or more other devices provided in the area in question, for example a so-called Enviro scan the area in question is movable or pivotable.
  • This catwalk 34 can be pivoted away, for example, by hand winches and / or the like, which is relatively inexpensive.

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP02007873A 2001-07-26 2002-04-09 Procédé pour transferer une bande fibreuse et machine pour la fabrication d'une bande fibreuse Expired - Fee Related EP1279765B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10136466A DE10136466A1 (de) 2001-07-26 2001-07-26 Verfahren zum Betreiben einer der Herstellung einer Faserstoffbahn dienenden Maschine sowie Maschine zur Herstellung einer solchen Faserstoffbahn
DE10136466 2001-07-26

Publications (2)

Publication Number Publication Date
EP1279765A1 true EP1279765A1 (fr) 2003-01-29
EP1279765B1 EP1279765B1 (fr) 2005-09-21

Family

ID=7693198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007873A Expired - Fee Related EP1279765B1 (fr) 2001-07-26 2002-04-09 Procédé pour transferer une bande fibreuse et machine pour la fabrication d'une bande fibreuse

Country Status (3)

Country Link
EP (1) EP1279765B1 (fr)
AT (1) ATE305064T1 (fr)
DE (2) DE10136466A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006090014A1 (fr) * 2005-02-23 2006-08-31 Metso Paper, Inc. Disposition dans la section de presse d’une machine de formation de bandes et racle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0674045A2 (fr) * 1994-03-21 1995-09-27 J.M. Voith GmbH Dispositif pour couper et enfiler la bande d'enfilement d'une bande de papier
EP0908556A2 (fr) * 1997-10-07 1999-04-14 Voith Sulzer Papiertechnik Patent GmbH Machine à papier et procédé de fabrication d'une bande de papier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611166A1 (de) * 1996-03-21 2000-12-07 Voith Sulzer Papiermasch Gmbh Schabervorrichtung für eine Papiermaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0674045A2 (fr) * 1994-03-21 1995-09-27 J.M. Voith GmbH Dispositif pour couper et enfiler la bande d'enfilement d'une bande de papier
EP0908556A2 (fr) * 1997-10-07 1999-04-14 Voith Sulzer Papiertechnik Patent GmbH Machine à papier et procédé de fabrication d'une bande de papier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006090014A1 (fr) * 2005-02-23 2006-08-31 Metso Paper, Inc. Disposition dans la section de presse d’une machine de formation de bandes et racle

Also Published As

Publication number Publication date
DE10136466A1 (de) 2003-02-13
EP1279765B1 (fr) 2005-09-21
ATE305064T1 (de) 2005-10-15
DE50204309D1 (de) 2006-02-02

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