CA2291213A1 - Heatable roll - Google Patents

Heatable roll Download PDF

Info

Publication number
CA2291213A1
CA2291213A1 CA 2291213 CA2291213A CA2291213A1 CA 2291213 A1 CA2291213 A1 CA 2291213A1 CA 2291213 CA2291213 CA 2291213 CA 2291213 A CA2291213 A CA 2291213A CA 2291213 A1 CA2291213 A1 CA 2291213A1
Authority
CA
Canada
Prior art keywords
ducts
roll
roll mantle
equivalent
mantle
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
CA 2291213
Other languages
French (fr)
Other versions
CA2291213C (en
Inventor
Reijo Pietikainen
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.)
Metso Paper Oy
Original Assignee
Valmet Oy
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 Valmet Oy filed Critical Valmet Oy
Publication of CA2291213A1 publication Critical patent/CA2291213A1/en
Application granted granted Critical
Publication of CA2291213C publication Critical patent/CA2291213C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0253—Heating or cooling the rolls; Regulating the temperature
    • D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid

Landscapes

  • Rolls And Other Rotary Bodies (AREA)
  • Paper (AREA)

Abstract

The invention concerns a heatable roll for a paper machine, paper finishing device, or equivalent, which roll comprises a roll mantle (31) which is heated by means of a heating medium, into which roll mantle (31) ducts (32) or equival-ent extending from end to end in the roll mantle have been formed substantially in the vicinity of the outer face (34) of the roll mantle (31), through which ducts the heating medium has been made to circulate in order to heat the outer face (34) of the roll mantle (31). In view of reducing the temperature gradient in the roll mantle (31), ducts (32,33) or equivalent have been arranged in at least two circumferential rows (R1, R2), and the ducts (32, 33) or equivalent placed in two rows (R1, R2) fitted in the direc-tion of the circumference have been fitted as interlocked with each other so that the ducts (32, 33) are placed on different radial lines.
CA 2291213 1998-12-02 1999-11-29 Heatable roll Expired - Fee Related CA2291213C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI982602 1998-12-02
FI982602A FI105115B (en) 1998-12-02 1998-12-02 Heated roller

Publications (2)

Publication Number Publication Date
CA2291213A1 true CA2291213A1 (en) 2000-06-02
CA2291213C CA2291213C (en) 2007-11-27

Family

ID=8553021

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2291213 Expired - Fee Related CA2291213C (en) 1998-12-02 1999-11-29 Heatable roll

Country Status (3)

Country Link
CA (1) CA2291213C (en)
DE (1) DE19957795B4 (en)
FI (1) FI105115B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI118697B (en) * 2006-12-13 2008-02-15 Metso Paper Inc Thermo roll for paper machine, has annular groove arranged on end surfaces of end pieces and shell for receiving composite-structured elastic metal seal to prevent leaking of heat-transfer medium from flow channels
DE102010044943A1 (en) * 2010-09-10 2012-03-15 Leonhard Breitenbach Gmbh Calender roller has flow passage between inlet and outlet plenum that is comprised with additional axial parallel bore formed between peripheral bores and central bore of roller portion

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002530A1 (en) * 1990-01-29 1991-08-01 Schwaebische Huettenwerke Gmbh ROLLER FOR A SMOOTHING OR CALENDAR
DE9000980U1 (en) * 1990-01-29 1990-05-10 Schwäbische Hüttenwerke GmbH, 73433 Aalen Roller for a smoothing unit or a calender
FI89087C (en) * 1990-08-08 1993-08-10 Valmet Paper Machinery Inc UPPHETTBAR VALS
US5171404A (en) * 1990-11-30 1992-12-15 S. D. Warren Company Method and apparatus for calendering paper with internally heated roll
FI91297C (en) * 1992-02-24 1994-06-10 Valmet Paper Machinery Inc Heatable roller
CA2108624A1 (en) * 1992-10-20 1994-04-21 Juhani Niskanen Method for heating a roll and a heatable roll, in particular a press roll for a paper machine
DE4317875A1 (en) * 1993-05-28 1993-10-14 Voith Gmbh J M Hollow roller used in paper-making machines - has axial drillings as a channel system for heat carrier medium feed and exhaust
DE4407239A1 (en) * 1994-03-04 1995-09-07 Schwaebische Huettenwerke Gmbh Steam heated roller
DE19538236A1 (en) * 1995-10-13 1997-04-17 Schwaebische Huettenwerke Gmbh Heating roller

Also Published As

Publication number Publication date
FI982602A0 (en) 1998-12-02
DE19957795B4 (en) 2007-08-16
DE19957795A1 (en) 2000-06-08
CA2291213C (en) 2007-11-27
FI105115B (en) 2000-06-15

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed