EP0501035A1 - Hotte d'isolation - Google Patents

Hotte d'isolation Download PDF

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Publication number
EP0501035A1
EP0501035A1 EP91121907A EP91121907A EP0501035A1 EP 0501035 A1 EP0501035 A1 EP 0501035A1 EP 91121907 A EP91121907 A EP 91121907A EP 91121907 A EP91121907 A EP 91121907A EP 0501035 A1 EP0501035 A1 EP 0501035A1
Authority
EP
European Patent Office
Prior art keywords
roller
gap
protection hood
hood according
thermal protection
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
EP91121907A
Other languages
German (de)
English (en)
Other versions
EP0501035B1 (fr
Inventor
Alfred Dr. Christ
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
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, Escher Wyss GmbH filed Critical Sulzer Escher Wyss GmbH
Publication of EP0501035A1 publication Critical patent/EP0501035A1/fr
Application granted granted Critical
Publication of EP0501035B1 publication Critical patent/EP0501035B1/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
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/003—Indicating or regulating the moisture content of the layer
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • D21F5/044—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using air hoods over the cylinders
    • 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

Definitions

  • the invention relates to a heat protection hood for heated rollers, in particular high-speed rollers in paper machines.
  • the invention has for its object to provide a heat protection hood for high-speed, heated rollers, which significantly reduces the heat losses through convection and radiation and also offers the possibility of influencing the axial temperature profile of the roller.
  • the resulting pressure difference between the deflection areas means that air is slightly blown out or drawn in at these.
  • the outer gap should be wider than the inner one and, in order to reduce the speed in the deflection area, the width of the columns should increase towards the ends.
  • a complete pressure equalization can be achieved, for example, if a partial flow is branched off from the outer gap, accelerated by a fan and fed back into the outer gap.
  • the zone-by-zone control of the temperature and thus also the thickness profile of the roller can be made possible by the fact that there is a branch line zone by zone in the course of the outer gap, which feeds part of the air flow via fans to a controllable heating unit and an injector opening into the outer gap and in particular in the paper exit-side deflection zone there are control flaps for cooling which allow ambient air to be admitted into the inner gap and at the same time to release warm air from the outer gap to the surroundings.
  • the parting line should preferably be in the area of the junction of the injector, since there is a Cross-sectional narrowing to create joint sealing surfaces across the flow has little effect.
  • a heated roller 1 and a counter roller 3 together form the smoothing unit for the paper web 2.
  • About two thirds of the roller 1 are surrounded by an outer screen 7 which runs concentrically to it and which has a separating screen 4 which is also concentric and runs between it and the roller 1 forms an inner 5 and an outer 6 gap.
  • the outer gap 6 is about twice as wide as the inner 5, the width of the columns 5 and 6 increasing towards the ends.
  • At the end of the separating screen 4 there is a deflection area 9 for the air carried in the inner gap 5 by the roller 1.
  • the deflection internals 10 and 11 attached there have rounded contours and direct the air flow into the respective other gap 5 and 6.
  • the roller 1 is divided into a plurality of axial zones by a plurality of separating webs 21 which extend close to the roller 1 and extend in the radial direction.
  • a branch 12 with a branch line 13 in the course of the outer gap 6, which feeds part of the air flow via deflection blades 14 and fans 15 to a controllable heating unit 16 and an injector 17 which opens into the outer gap 6.
  • a rotatable control flap 22 is arranged in zones in the deflection area 9 on the paper exit side, which enables cold air to be sucked in and warm air to be blown out.
  • the outer shield 7 and the branch line 13 are surrounded by a thermally insulating layer 8.
  • scraper 23 In the vicinity of the control flap 22 there is a scraper 23, the scraper carrier 24 being in the form of a traverse and forming a unit with the heat protection hood.
  • the parting line 18 of the heat protection hood is located in the region of the mouth of the injector 17. This allows both parts to be moved down for repair and cleaning by means of guide rails and hydraulic cylinders (not shown) in the radial direction 25.
  • Wedge-shaped internals 19 present at the joint 18 form sealing surfaces for the elastic sealing elements 20 lying transversely to the flow.
EP91121907A 1991-02-26 1991-12-20 Hotte d'isolation Expired - Lifetime EP0501035B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4105978A DE4105978C2 (de) 1991-02-26 1991-02-26 Schutzhaube für Walzen
DE4105978 1991-02-26

Publications (2)

Publication Number Publication Date
EP0501035A1 true EP0501035A1 (fr) 1992-09-02
EP0501035B1 EP0501035B1 (fr) 1995-05-10

Family

ID=6425900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121907A Expired - Lifetime EP0501035B1 (fr) 1991-02-26 1991-12-20 Hotte d'isolation

Country Status (5)

Country Link
US (1) US5255447A (fr)
EP (1) EP0501035B1 (fr)
AT (1) ATE122422T1 (fr)
DE (2) DE4105978C2 (fr)
FI (1) FI920694A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4412625A1 (de) * 1994-04-13 1995-10-19 Kleinewefers Gmbh Vorrichtung und Verfahren zum Behandeln einer Materialbahn
DE4412624A1 (de) * 1994-04-13 1995-10-19 Kleinewefers Gmbh Verfahren und Vorrichtung zur Behandlung einer Materialbahn
CN106835806A (zh) * 2016-12-26 2017-06-13 重庆皖渝纸制品有限公司 一种烘干罩

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9306448U1 (fr) * 1993-04-29 1993-06-09 Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De
US6079116A (en) * 1998-11-06 2000-06-27 Valmet-Karlstad Ab Duct configuration for a through-air drying apparatus in a papermaking machine
FI113790B (fi) * 1999-06-23 2004-06-15 Metso Paper Inc Menetelmä ja laite kalanteroinnissa
FI20000756A (fi) * 2000-03-31 2001-10-01 Metso Paper Inc Kalanterointimenetelmä ja kalanteri
US6631566B2 (en) * 2000-09-18 2003-10-14 Kimberly-Clark Worldwide, Inc. Method of drying a web
WO2003064761A1 (fr) * 2002-01-29 2003-08-07 Metso Paper, Inc. Dispositif de traitement et procede d'utilisation de ce dispositif pour traiter une nappe fibreuse enduite ou non enduite
FI20020159A (fi) * 2002-01-29 2003-07-30 Metso Paper Inc Pinnan muokkauslaite ja laitetta käyttävä menetelmä päällystetyn tai päällystämättömän kuiturainan viimeistelemiseksi
DE20307055U1 (de) * 2003-05-07 2003-07-17 Schramm Kurt Zellstoffentwässerungsmaschine
ATE520820T1 (de) 2007-12-20 2011-09-15 Stora Enso Oyj Anordnung für die pressenpartie einer maschine zur herstellung einer materialbahn und in einer solchen anordnung hergestellter karton oder papier
CN104215059A (zh) * 2014-09-05 2014-12-17 广西壮族自治区特种设备监督检验院 一种烘缸经济器
CN107503219A (zh) * 2017-09-23 2017-12-22 东莞市白天鹅纸业有限公司 一种高效的压光辊加热系统
EP3802952A4 (fr) * 2018-05-31 2022-07-06 Valmet, Inc. Systèmes et procédés de séchage et de liaison à air traversant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB285914A (en) * 1927-02-26 1929-05-23 Erik Alexander Ohlin Improved method for drying paper or the like in the form of continuous webs and improvements in paper making machinery for carrying out this method
CH261636A (de) * 1949-03-16 1949-05-31 Sulzer Ag Trockenvorrichtung.
US2939222A (en) * 1953-06-30 1960-06-07 Svenska Flaektfabriken Ab Method for drying or other treatment of a web-like material
US3052991A (en) * 1959-02-24 1962-09-11 Midland Ross Corp Apparatus for uniform accelerated drying of web material
US4523390A (en) * 1982-12-13 1985-06-18 Aer-Overly Corporation Peripheral exhaust system for high velocity dryer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318017A (en) * 1967-05-09 Heat treating method and apparatus
DE919229C (de) * 1942-12-11 1954-10-18 Maschf Augsburg Nuernberg Ag Vorrichtung zum Trocknen von Tiefdruckpapierbahnen
US2499141A (en) * 1947-12-09 1950-02-28 Fair Lawn Finishing Company Heat-treatment of webs of textile materials
US3163502A (en) * 1960-10-13 1964-12-29 Beloit Corp Removable hood for a drying cylinder
US3206869A (en) * 1961-12-01 1965-09-21 Beloit Iron Works Apparatus for applying a gloss to paper in drying thereof
GB2099970B (en) * 1981-04-27 1985-12-11 Kimberly Clark Ltd Drying paper webs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB285914A (en) * 1927-02-26 1929-05-23 Erik Alexander Ohlin Improved method for drying paper or the like in the form of continuous webs and improvements in paper making machinery for carrying out this method
CH261636A (de) * 1949-03-16 1949-05-31 Sulzer Ag Trockenvorrichtung.
US2939222A (en) * 1953-06-30 1960-06-07 Svenska Flaektfabriken Ab Method for drying or other treatment of a web-like material
US3052991A (en) * 1959-02-24 1962-09-11 Midland Ross Corp Apparatus for uniform accelerated drying of web material
US4523390A (en) * 1982-12-13 1985-06-18 Aer-Overly Corporation Peripheral exhaust system for high velocity dryer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4412625A1 (de) * 1994-04-13 1995-10-19 Kleinewefers Gmbh Vorrichtung und Verfahren zum Behandeln einer Materialbahn
DE4412624A1 (de) * 1994-04-13 1995-10-19 Kleinewefers Gmbh Verfahren und Vorrichtung zur Behandlung einer Materialbahn
US5619807A (en) * 1994-04-13 1997-04-15 Voith Sulzer Finishing Gmbh Method and apparatus for processing a web of material
US5651863A (en) * 1994-04-13 1997-07-29 Voith Sulzer Finishing Gmbh Apparatus and method for treating a sheet of material
DE4412624C2 (de) * 1994-04-13 1998-04-09 Kleinewefers Gmbh Verfahren und Vorrichtung zur Behandlung einer Materialbahn
DE4412625C2 (de) * 1994-04-13 1999-05-06 Kleinewefers Gmbh Vorrichtung und Verfahren zum Behandeln einer Materialbahn
CN106835806A (zh) * 2016-12-26 2017-06-13 重庆皖渝纸制品有限公司 一种烘干罩

Also Published As

Publication number Publication date
EP0501035B1 (fr) 1995-05-10
DE4105978A1 (de) 1992-08-27
DE4105978C2 (de) 1997-01-30
DE59105456D1 (de) 1995-06-14
FI920694A0 (fi) 1992-02-18
US5255447A (en) 1993-10-26
FI920694A (fi) 1992-08-27
ATE122422T1 (de) 1995-05-15

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