CA2025447A1 - Method and apparatus for reducing vibration in the press section of a papermaking machine - Google Patents

Method and apparatus for reducing vibration in the press section of a papermaking machine

Info

Publication number
CA2025447A1
CA2025447A1 CA2025447A CA2025447A CA2025447A1 CA 2025447 A1 CA2025447 A1 CA 2025447A1 CA 2025447 A CA2025447 A CA 2025447A CA 2025447 A CA2025447 A CA 2025447A CA 2025447 A1 CA2025447 A1 CA 2025447A1
Authority
CA
Canada
Prior art keywords
press section
felt
papermaking machine
trade line
reducing vibration
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
CA2025447A
Other languages
French (fr)
Other versions
CA2025447C (en
Inventor
David V. Lange
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.)
Valmet Technologies Oy
Original Assignee
Beloit Corp
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 Beloit Corp filed Critical Beloit Corp
Publication of CA2025447A1 publication Critical patent/CA2025447A1/en
Application granted granted Critical
Publication of CA2025447C publication Critical patent/CA2025447C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D21F3/04—Arrangements thereof
    • 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
    • D21F7/005—Wire-tensioning devices

Landscapes

  • Paper (AREA)

Abstract

Method and apparatus for reducing vibration in the press section of a high speed papermaking machine. The press section has at least one dewatering felt with means such as a trade line for indicating the orientation of the felt in the press section. The press section includes means for adjusting the trade line orientation as the felt cycles in a continous loop through the press section. Barring of the felt, i.e., introduction of thickness variations in the felt by resonant vibrations in the nip, is minimized by progressively altering the trade line orientation as the felt cycles through the press section, the trade line orientation adjustment being accomplished at a rate adequate to iron out bars formed on previous passes and prevent resonant buildup of bars in the felt during operation of the papermaking machine.
CA002025447A 1989-11-07 1990-09-14 Method and apparatus for reducing vibration in the press section of a papermaking machine Expired - Lifetime CA2025447C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43406489A 1989-11-07 1989-11-07
US07/434,064 1989-11-07

Publications (2)

Publication Number Publication Date
CA2025447A1 true CA2025447A1 (en) 1991-05-08
CA2025447C CA2025447C (en) 1995-01-17

Family

ID=23722671

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002025447A Expired - Lifetime CA2025447C (en) 1989-11-07 1990-09-14 Method and apparatus for reducing vibration in the press section of a papermaking machine

Country Status (2)

Country Link
JP (1) JPH03152290A (en)
CA (1) CA2025447C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5403447A (en) * 1991-05-21 1995-04-04 Valmet Paper Machinery Inc. System in a press section of a paper machine for monitoring and control of the running of the press felts

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT508331B1 (en) * 2009-05-19 2011-05-15 Andritz Ag Maschf METHOD AND DEVICE FOR TREATING A FIBROUS CAR TRACK IN A LANGNIP PRESS UNIT
DE102011006134A1 (en) * 2011-03-25 2012-09-27 Voith Patent Gmbh Method for operating a clothing
FI123251B (en) * 2011-10-14 2013-01-15 Metso Paper Inc Method and arrangement on a fiber web machine and software product

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5146847B2 (en) * 1972-12-29 1976-12-11
JPS5146165B2 (en) * 1973-11-13 1976-12-07
FI790105A7 (en) * 1979-01-12 1980-07-13 Valmet Oy FOERFARANDE OCH ANORDNING FOER BEHANDLING AV FIBERBANA

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5403447A (en) * 1991-05-21 1995-04-04 Valmet Paper Machinery Inc. System in a press section of a paper machine for monitoring and control of the running of the press felts

Also Published As

Publication number Publication date
JPH03152290A (en) 1991-06-28
CA2025447C (en) 1995-01-17

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202