EP0989234A2 - Couteau racleur - Google Patents

Couteau racleur Download PDF

Info

Publication number
EP0989234A2
EP0989234A2 EP99111853A EP99111853A EP0989234A2 EP 0989234 A2 EP0989234 A2 EP 0989234A2 EP 99111853 A EP99111853 A EP 99111853A EP 99111853 A EP99111853 A EP 99111853A EP 0989234 A2 EP0989234 A2 EP 0989234A2
Authority
EP
European Patent Office
Prior art keywords
scraper
roller
malfunction
holder
acts
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
EP99111853A
Other languages
German (de)
English (en)
Other versions
EP0989234B1 (fr
EP0989234A3 (fr
Inventor
Hans Prinzing
Dirk Thomas
Anton Eichinger
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
Voith Sulzer Papiertechnik 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, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0989234A2 publication Critical patent/EP0989234A2/fr
Publication of EP0989234A3 publication Critical patent/EP0989234A3/fr
Application granted granted Critical
Publication of EP0989234B1 publication Critical patent/EP0989234B1/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
    • D21F2/00—Transferring continuous webs from wet ends to press sections
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes

Definitions

  • the invention relates to a scraper consisting of a scraper holder and one Scraper blade to keep rotating rollers clean in manufacturing machines and / or upgrading fibrous webs, the scraper axially along the roller runs and the doctor blade is pressed against the surface of the roller.
  • scraper holder in general is pressed pneumatically adjustable.
  • the contact pressure is set correctly, it can damage the Machine unit, especially on the scraper and / or the roller.
  • a scraper with restricted function can cause the Roll no longer function, for example in the drainage of Fibrous web, can meet.
  • the object of the invention is therefore damage due to malfunction of scrapers at least to decrease.
  • the object was achieved in that at least one sensor Position of the scraper blade and / or the scraper holder detected and with a Control unit connected, due to malfunction of the scraper Hazardous elements and / or vulnerable elements in at least one Acts in a risk-reducing manner.
  • the scraper should come off the roller in the event of a malfunction be swung away. This not only protects the scraper itself but also the Roller or its cover against damage.
  • the fibrous web 1 is one of the press section of a screen 5 upstream machine unit in the form of the wire section. This happens with the help of a looped by an endless press felt 2, sucked Removal roller 10.
  • the fibrous web 1 then runs together with the press felt 2 by a press nip formed by two rollers 3 and 4.
  • On the lower roller 4 is a scraper consisting of a scraper holder 8 and a scraper blade 9 arranged.
  • the scraper blade 9 is pneumatically against the scraper holder 8 Pressed surface of the roller 4 to be cleaned.
  • the position of the scraper is monitored a sensor 7.
  • the control unit 6 connected to the sensor 7 causes that with the aid of the adjusting member 11, the take-off roller 10 is pivoted away from the screen 5 becomes. As a result, the further transport of the fibrous web 1 is prevented and the same drained down.
  • the scraper can be pivoted away from the roller 4, the Rollers 3 and 4 stopped, cleaned and possibly also repaired.

Landscapes

  • Paper (AREA)
EP99111853A 1998-09-11 1999-06-19 Couteau racleur Expired - Lifetime EP0989234B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19841637A DE19841637A1 (de) 1998-09-11 1998-09-11 Schaber
DE19841637 1998-09-11

Publications (3)

Publication Number Publication Date
EP0989234A2 true EP0989234A2 (fr) 2000-03-29
EP0989234A3 EP0989234A3 (fr) 2000-11-15
EP0989234B1 EP0989234B1 (fr) 2004-04-28

Family

ID=7880650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99111853A Expired - Lifetime EP0989234B1 (fr) 1998-09-11 1999-06-19 Couteau racleur

Country Status (2)

Country Link
EP (1) EP0989234B1 (fr)
DE (2) DE19841637A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002084023A1 (fr) * 2001-04-11 2002-10-24 Metso Paper, Inc. Procede permettant de surveiller le fonctionnement d'un systeme de racle dans une machine a papier et systeme de racle permettant la mise en oeuvre de ce procede

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919756A (en) * 1988-08-26 1990-04-24 The Procter & Gamble Company Method of and apparatus for compensatingly adjusting doctor blade
EP0684338A2 (fr) * 1994-05-27 1995-11-29 Voith Sulzer Papiermaschinen GmbH Porte-lame

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417796A (en) * 1943-03-18 1947-03-18 Ecusta Paper Corp Electrical system for doctor blade control in paper making machines
SE469035B (sv) * 1991-09-16 1993-05-03 Valmet Karlstad Ab Foerfarande och anordning foer justering av kraeppningsbetingelserna

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919756A (en) * 1988-08-26 1990-04-24 The Procter & Gamble Company Method of and apparatus for compensatingly adjusting doctor blade
EP0684338A2 (fr) * 1994-05-27 1995-11-29 Voith Sulzer Papiermaschinen GmbH Porte-lame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002084023A1 (fr) * 2001-04-11 2002-10-24 Metso Paper, Inc. Procede permettant de surveiller le fonctionnement d'un systeme de racle dans une machine a papier et systeme de racle permettant la mise en oeuvre de ce procede
DE10296651B4 (de) * 2001-04-11 2006-03-16 Metso Paper, Inc. Verfahren zum Überwachen des Betriebs einer Schaberbaugruppe in einer Papiermaschine und Schaberbaugruppe zum Ausführen dieses Verfahrens
US7264692B2 (en) 2001-04-11 2007-09-04 Metso Paper, Inc. Method for monitoring the operation of a doctor assembly in a paper machine and a doctor assembly for implementing the method

Also Published As

Publication number Publication date
EP0989234B1 (fr) 2004-04-28
EP0989234A3 (fr) 2000-11-15
DE19841637A1 (de) 2000-03-16
DE59909307D1 (de) 2004-06-03

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