EP1882775B1 - Rouleau compresseur - Google Patents

Rouleau compresseur Download PDF

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Publication number
EP1882775B1
EP1882775B1 EP07107697A EP07107697A EP1882775B1 EP 1882775 B1 EP1882775 B1 EP 1882775B1 EP 07107697 A EP07107697 A EP 07107697A EP 07107697 A EP07107697 A EP 07107697A EP 1882775 B1 EP1882775 B1 EP 1882775B1
Authority
EP
European Patent Office
Prior art keywords
lubricant
press roll
wiping element
roll
roll shell
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.)
Not-in-force
Application number
EP07107697A
Other languages
German (de)
English (en)
Other versions
EP1882775A1 (fr
Inventor
Andreas Hoppermann
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 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 Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1882775A1 publication Critical patent/EP1882775A1/fr
Application granted granted Critical
Publication of EP1882775B1 publication Critical patent/EP1882775B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D21G1/0206—Controlled deflection rolls
    • D21G1/0213—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member
    • D21G1/022—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member the means using fluid pressure
    • 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
    • D21G1/0206—Controlled deflection rolls
    • D21G1/0213—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member

Definitions

  • the invention relates to a press roll of a machine for producing and / or finishing a paper, cardboard, tissue or another fibrous web with a rotating, cylindrical roll shell, which is supported on at least one support element of a stationary support, with the inside of the Roll mantle in contact bearing surface of the support element is lubricated with a liquid lubricant and the lubricant is stripped from the inside of the roll shell by means of at least one stripping element, wherein in the rotational direction of the roll mantle after the stripping element cooler lubricant is applied to the inside of the roll mantle.
  • the gap between the support element and the roll shell is predominantly hydrostatically lubricated.
  • a part of the lubricating oil is discharged from the inside of the roll shell via individual oil producers and supplied with cooling oil from the sides of the roll.
  • the object of the invention is to further improve the lubrication while equalizing the temperature profile of the lubricant along the press roll. According to the invention, this object is achieved in that the distance between the stripping and the application of the lubricant is between 0.1 and 100 mm and that the stripping a discharge line associated for discharging the lubricant from the press roll and a supply line for the applied lubricant with the stripping are connected.
  • this also allows the formation of a lubricant circuit, wherein the discharged lubricant is treated, in particular filtered and cooled and then fed back.
  • the coolant does not have to be cooled as much.
  • it can be supplied as needed, which saves energy.
  • thermo sensors can be arranged on the inside of the roll mantle, the support elements and / or in the discharge line.
  • the distance between the stripping and the application of the lubricant must be as small as possible and is between 0.1 and 100 mm, preferably between 0.2 and 10 mm.
  • the stripping element which is preferably fixed to the carrier, can be designed in a simple form as a scraper, the scraper tip of which is aligned counter to the direction of rotation of the roll mantle.
  • the scraper element associated therewith a discharge line for discharging the lubricant from the press roll.
  • the discharge line is connected to a vacuum source.
  • the stripping element or elements should extend over more than 50%, preferably more than 75% and in particular more than 90% of the length of the roll mantle.
  • the replacement rate of the lubricant can be improved and the greatest possible removal of dirt particles from the press roll can be achieved if the minimum distance between the stripping element and the inside of the roll shell is as small as possible, preferably smaller than 1 mm.
  • a rotatable suspension of the scraper on the carrier is suitable.
  • the supply and discharge lines should also be integrated into the suspension.
  • the wiping element should have no or an overflow for the forwarding of a part of the lubricant in the direction of rotation following part of the inside of the roll shell.
  • These deflection-controlled press rolls have a cylindrical roll shell 1, which is mounted rotatably about a stationary support 9.
  • the roll shell 1 is supported on one or more axially juxtaposed hydraulic support elements. These support elements press the roll shell 1 to form a press nip in the direction of a counter roll or a belt.
  • the gap between the support elements and the roll shell 1 is lubricated hydrostatically and / or hydrodynamically with a lubricant in the form of oil.
  • a lubricant film 3 forms on the inside of the roll shell 1.
  • the lubricant film 3 or a part thereof is discharged from a plurality of axially juxtaposed scraper elements 2 with a rounded scraper surface from the inner surface of the roll mantle 1.
  • the scraping surfaces are axially parallel and protect the roll shell 1 by their rounded shape.
  • the stripping elements 2 extend overall over the entire axial length of the roll mantle 1 and thus capture the entire lubricant film 3. There should be no clearance between the stripping elements 2.
  • the pressing of the stripping element 2 against the inside of the roll mantle 1 takes place via a spring element.
  • the stripped lubricant is passed to a discharge channel 4.
  • This discharge channel 4 is connected to a vacuum source and so sucks the lubricant according to FIG. 1 via a filter 6 and a cooler 7 to a controllable pump. 8
  • the non-discharged part of the lubricant film 3 passes through an overflow of the stripping element 2 again to the inside of the roll shell.
  • the cleaned and cooled lubricant passes via a feed line 5 in the direction of rotation after the stripping element 2 again to the inside of the roll shell.
  • the ends of the discharge 4, supply line 5 and the stripping element 2 form a unit. With the fixation of the lines 4, 5 on the stripping element 2, a short circumferential distance between discharge and supply of the lubricant is ensured.
  • the on-demand supply of cool lubricant and the formation of a lubricant circuit can significantly reduce costs.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Paper (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Friction Gearing (AREA)
  • Lubricants (AREA)
  • Coating Apparatus (AREA)

Claims (13)

  1. Rouleau de pressage d'une machine de fabrication et/ou d'amélioration d'une bande de papier, carton, papier-tissu ou d'une autre bande fibreuse, comprenant une enveloppe de rouleau cylindrique rotative (1), qui s'appuie sur au moins un élément de support d'un support stationnaire (9), la surface de roulement de l'élément de support venant en contact avec le côté intérieur de l'enveloppe de rouleau (1) étant lubrifiée avec un lubrifiant liquide, et le lubrifiant étant raclé du côté intérieur de l'enveloppe de rouleau (1) à l'aide d'au moins un élément de raclage (2), du lubrifiant plus froid étant appliqué sur le côté intérieur de l'enveloppe de rouleau (1) dans la direction de rotation de l'enveloppe de rouleau (1) après l'élément de raclage (2), caractérisé en ce que la distance entre le raclage et l'application du lubrifiant est comprise entre 0,1 et 100 mm et en ce qu'une conduite d'évacuation (4) associée à l'élément de raclage (2) est connectée à l'élément de raclage (2) pour évacuer le lubrifiant hors du rouleau de pressage et une conduite d'amenée (5) pour le lubrifiant à appliquer est connectée à l'élément de raclage (2).
  2. Rouleau de pressage selon la revendication 1, caractérisé en ce que la distance entre le raclage et l'application du lubrifiant est comprise entre 0,2 et 10 mm.
  3. Rouleau de pressage selon la revendication 1 ou 2, caractérisé en ce que la conduite d'évacuation (4) est connectée à une source de dépression.
  4. Rouleau de pressage selon l'une quelconque des revendications précédentes, caractérisé en ce que le ou les éléments de raclage (2) s'étendent sur plus de 50% de la longueur de l'enveloppe de rouleau (1).
  5. Rouleau de pressage selon l'une quelconque des revendications précédentes, caractérisé en ce que le ou les éléments de raclage (2) s'étendent sur plus de 75% de la longueur de l'enveloppe de rouleau (1).
  6. Rouleau de pressage selon l'une quelconque des revendications précédentes, caractérisé en ce que le ou les éléments de raclage (2) s'étendent sur plus de 90% de la longueur de l'enveloppe de rouleau (1).
  7. Rouleau de pressage selon l'une quelconque des revendications précédentes, caractérisé en ce que la distance minimale entre l'élément de raclage (2) et le côté intérieur de l'enveloppe de rouleau (1) est inférieure à 1 mm.
  8. Rouleau de pressage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de raclage (2) est en contact avec le côté intérieur de l'enveloppe de rouleau (1).
  9. Rouleau de pressage selon la revendication 8, caractérisé en ce que l'élément de raclage est fixé sur le support de manière à pouvoir être pressé contre le côté intérieur de l'enveloppe de rouleau (1).
  10. Rouleau de pressage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de raclage (2) possède un trop-plein pour conduire une partie du lubrifiant dans la partie suivante, dans la direction de rotation, du côté intérieur de l'enveloppe de rouleau (1).
  11. Rouleau de pressage selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'élément de raclage (2) ne possède par de trop-plein.
  12. Rouleau de pressage selon l'une quelconque des revendications précédentes, caractérisé en ce que le lubrifiant évacué est traité, notamment filtré et refroidi, puis est réacheminé.
  13. Rouleau de pressage selon l'une quelconque des revendications précédentes, caractérisé en ce que la quantité et/ou la température du lubrifiant acheminé sont commandées en fonction de la température du lubrifiant évacué.
EP07107697A 2006-07-24 2007-05-08 Rouleau compresseur Not-in-force EP1882775B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006034043A DE102006034043A1 (de) 2006-07-24 2006-07-24 Presswalze

Publications (2)

Publication Number Publication Date
EP1882775A1 EP1882775A1 (fr) 2008-01-30
EP1882775B1 true EP1882775B1 (fr) 2011-08-17

Family

ID=38648229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07107697A Not-in-force EP1882775B1 (fr) 2006-07-24 2007-05-08 Rouleau compresseur

Country Status (3)

Country Link
EP (1) EP1882775B1 (fr)
AT (1) ATE520823T1 (fr)
DE (1) DE102006034043A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI123370B (fi) 2007-11-07 2013-03-15 Metso Paper Inc Menetelmä kiertovoitelun ohjaamiseksi ja kiertovoitelujärjestelmä

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19703966A1 (de) * 1997-02-03 1998-08-06 Voith Sulzer Papiermasch Gmbh Bandpreßeinheit mit Fluidabstreifvorrichtung und Verfahren zum Betrieb der Bandpreßeinheit
DE19903843C1 (de) * 1999-02-01 2000-07-06 Voith Sulzer Papiertech Patent Walze für eine Walzenmaschine
JP2005221027A (ja) * 2004-02-06 2005-08-18 Mitsubishi Heavy Ind Ltd ロール装置用油回収装置

Also Published As

Publication number Publication date
DE102006034043A1 (de) 2008-01-31
EP1882775A1 (fr) 2008-01-30
ATE520823T1 (de) 2011-09-15

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