EP1882775B1 - Press roller - Google Patents

Press roller 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
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EP
European Patent Office
Prior art keywords
lubricant
press roll
wiping element
roll
roll shell
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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.)
Expired - Fee Related
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EP07107697A
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German (de)
French (fr)
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EP1882775A1 (en
Inventor
Andreas Hoppermann
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP1882775A1 publication Critical patent/EP1882775A1/en
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    • 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)
  • Coating Apparatus (AREA)
  • Friction Gearing (AREA)
  • Lubricants (AREA)

Abstract

Following the wiper component (2) in the direction of rotation, a cooling lubricant is applied to the inside of the roller casing (1). Spacing between the wiper and lubricant application, is preferably 0.2 - 10 mm. A drain line (4) connected to the wiper, leads lubricant out and away from the pressure roller. This line (4) is connected to a source of reduced pressure. Both the lubricant drain line (4) and lubricant supply line (5) are connected to the wiper. Wiper(s) extend along more than 50%, 75%, or 90% of the roller casing length. Minimum clearance between the wiper and the roller casing internal surface, is less than 1 mm. They may make contact. The wiper is fastened to a carrier, to be pressed against the inside of the roller casing. The wiper (2) has an overflow leading a fraction of the lubricant into the internal section of the roller casing following the wiper. It alternatively has no overflow. Drained lubricant is re-processed, especially by filtration (6) and cooling (7); it is then recycled to the roller. The quantity and/or temperature of the lubricant supplied (8), is controlled as a function of the temperature of the drained lubricant.

Description

Die Erfindung betrifft eine Presswalze einer Maschine zur Herstellung und/oder Veredlung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn mit einem rotierenden, zylindrischen Walzenmantel, welcher sich auf zumindest einem Stützelement eines stationären Trägers abstützt, wobei die mit der Innenseite des Walzenmantels in Kontakt kommende Lauffläche des Stützelementes mit einem flüssigen Schmiermittel geschmiert wird und das Schmiermittel von der Innenseite des Walzenmantels mit Hilfe wenigstens eines Abstreifelementes abgestreift wird, wobei in Rotationsrichtung des Walzenmantels nach dem Abstreifelement kühleres Schmiermittel auf die Innenseite des Walzenmantels aufgebracht wird.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.

Bei diesen meist als durchbiegungsgesteuerte Presswalzen ausgebildeten Walzen wird der Spalt zwischen Stützelement und Walzenmantel überwiegend hydrostatisch geschmiert.In these rolls, which are usually designed as deflection-controlled press rolls, the gap between the support element and the roll shell is predominantly hydrostatically lubricated.

Durch die Rotationsbewegung des Walzenmantels und der damit verbundenen Flüssigkeitsreibung kommt es zur Aufwärmung des Schmieröls und damit zu einer Verringerung der Viskosität, der Tragfähigkeit und der Lebensdauer des Schmieröls.Due to the rotational movement of the roll shell and the associated liquid friction, it comes to heating the lubricating oil and thus to a reduction in the viscosity, the load capacity and the life of the lubricating oil.

Aus diesem Grund wird ein Teil des Schmieröls von der Innenseite des Walzenmantels über einzelne Ölschöpfer abgeführt und Kühlöl von den Seiten der Walze zugeführt.For this reason, 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.

Unbefriedigend bleiben dabei die relativ großen Temperaturunterschiede des Schmiermittels über die Länge des Walzenmantels betrachtet.The relatively large temperature differences of the lubricant over the length of the roll shell remain unsatisfactory.

In der DE 19703966 A1 ist beispielsweise eine Walze gemäß der einleitenden Beschreibung offenbart.In the DE 19703966 A1 For example, a roller according to the introductory description is disclosed.

Die Aufgabe der Erfindung ist es, die Schmierung unter Vergleichmäßigung des Temperaturverlaufs des Schmiermittels entlang der Presswalze weiter zu verbessern. Erfindungsgemäß wurde die Aufgabe dadurch gelöst, dass der Abstand zwischen dem Abstreifen und dem Aufbringen des Schmiermittels zwischen 0,1 und 100 mm liegt und dass eine dem Abstreifelement zugeordnete Abführleitung zum Abführen des Schmiermittels aus der Presswalze und eine Zuführleitung für das aufzubringende Schmiermittel mit dem Abstreifelement verbunden sind.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.

Damit wird einerseits eine verbesserte Zuordnung und Verteilung des kühleren Schmiermittels axial entlang der Walze und andererseits eine Zuführung des kühleren Schmiermittels mit einer Menge, die der Menge des abgeführten Schmiermittels am betreffenden Ort entspricht, möglich.Thus, on the one hand, an improved allocation and distribution of the cooler lubricant axially along the roller and on the other hand, a supply of the cooler lubricant with an amount corresponding to the amount of lubricant discharged at the relevant location, possible.

Dies vermindert den thermischen und mengenmäßigen Ausgleich beim Schmiermittelfilm an der Innenseite des Walzenmantel axial entlang der Walze erheblich, so dass sich die Temperaturunterschiede des Schmiermittels axial entlang der Walze erheblich reduzieren lassen.This considerably reduces the thermal and quantitative compensation of the lubricant film on the inside of the roll shell axially along the roll, so that the temperature differences of the lubricant can be reduced considerably axially along the roll.

Außerdem erlaubt dies auch die Bildung eines Schmiermittelkreislaufs, wobei das abgeführte Schmiermittel aufbereitet, insbesondere gefiltert und gekühlt und anschließend wieder zugeführt wird.In addition, this also allows the formation of a lubricant circuit, wherein the discharged lubricant is treated, in particular filtered and cooled and then fed back.

Im Ergebnis muss das Kühlmittel nicht mehr so stark gekühlt werden. Außerdem kann es bedarfsgerecht zugeführt werden, was Energie spart.As a result, the coolant does not have to be cooled as much. In addition, it can be supplied as needed, which saves energy.

Zur Optimierung ist es dabei von Vorteil, wenn die Menge und/oder die Temperatur des zugeführten Schmiermittels in Abhängigkeit von der Temperatur des abgeführten Schmiermittels gesteuert wird. Hierzu können Temperatursensoren an der Innenseite des Walzenmantels, den Stützelementen und/oder in der Abführleitung angeordnet werden.For optimization, it is advantageous if the amount and / or the temperature of the supplied lubricant is controlled in dependence on the temperature of the discharged lubricant. For this purpose, temperature sensors can be arranged on the inside of the roll mantle, the support elements and / or in the discharge line.

Um Ausgleichsströme entlang der Walze zu minimieren, ist auch der Abstand zwischen dem Abstreifen und dem Aufbringen des Schmiermittels möglichst klein sein und liegt zwischen 0,1 und 100 mm, vorzugsweise zwischen 0,2 und 10 mm.In order to minimize equalizing currents along the roller, 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.

Das vorzugsweise am Träger fixierte Abstreifelement kann dabei in einfacher Form als Schaber ausgebildet sein, dessen Schaberspitze entgegen der Rotationsrichtung des Walzenmantels ausgerichtet ist.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.

Dabei ist dem Abstreifelement eine damit verbundene Abführleitung zum Abführen des Schmiermittels aus der Presswalze zugeordnet.In this case, the scraper element associated therewith a discharge line for discharging the lubricant from the press roll.

Zur Unterstützung der Schmiermittelabfuhr ist es vorteilhaft, wenn die Abführleitung mit einer Unterdruckquelle verbunden ist.To support the lubricant removal, it is advantageous if the discharge line is connected to a vacuum source.

Eine konstruktive Vereinfachung und ein minimaler Abstand zwischen Schmiermittelab- und -zufuhr ergeben sich, weil die Abführleitung und eine Zuführleitung für das aufzubringende Schmiermittel mit dem Abstreifelement verbunden sind.A constructive simplification and a minimal distance between Schmiermittelab- and supply arise because the discharge line and a supply line for the lubricant to be applied are connected to the scraper.

Um dabei einen möglichst großen Teil des Schmiermittelfilms abführen und durch aufbereitetes oder neues Schmiermittel ersetzen zu können, sollte sich das oder die Abstreifelemente über mehr als 50%, vorzugsweise mehr als 75% und insbesondere mehr als 90% der Länge des Walzenmantels erstrecken.In order to be able to remove as much of the lubricant film as possible and to replace it with treated or new lubricant, 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.

Am besten ist es natürlich, wenn das Schmiermittel ohne Unterbrechung entlang des Walzenmantels abgestreift wird.It is best, of course, if the lubricant is stripped without interruption along the roll shell.

Die Austauschrate des Schmiermittels kann verbessert und eine möglichst umfassende Abfuhr von Schmutzpartikeln aus der Presswalze kann erreicht werden, wenn der minimale Abstand zwischen dem Abstreifelement und der Innenseite des Walzenmantels möglichst klein, vorzugsweise kleiner als 1 mm ist.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.

Ein Optimum ergibt sich, wenn das Abstreifelement mit der Innenseite des Walzenmantels in Kontakt ist. Hierzu ist es von Vorteil, wenn das Abstreifelement am Träger gegen die Innenseite des Walzenmantels anpressbar befestigt ist.An optimum results when the stripping element is in contact with the inside of the roll mantle. For this purpose, it is advantageous if the wiping element is attached to the carrier against the inside of the roll shell pressed.

Hiefür eignet sich beispielsweise eine drehbare Aufhängung des Abstreifers an dem Träger. Dabei sollten auch die Ab- und Zuführleitungen in die Aufhängung integriert werden.For this purpose, for example, a rotatable suspension of the scraper on the carrier is suitable. The supply and discharge lines should also be integrated into the suspension.

Im Ergebnis soll es zu einer Anpassung an den Durchhang des Walzenmantels und einen Hub des Stützelementes kommen.As a result, there should be an adaptation to the sag of the roll shell and a stroke of the support element.

In Abhängigkeit von den speziellen Anforderungen, insbesondere der geforderten Austauschrate des Schmiermittels sollte das Abstreifelement keinen oder einen Überlauf zur Weiterleitung eines Teils des Schmiermittels in den in Rotationsrichtung folgenden Teil der Innenseite des Walzenmantels besitzen.Depending on the specific requirements, in particular the required replacement rate of the lubricant, 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.

Nachfolgend soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden. In der beigefügten Zeichnung zeigt:

  • Figur 1: eine schematische Darstellung des Schmiermittelkreislaufs und
  • Figur 2: eine schematische Darstellung der Befestigung des Abstreifelementes 2.
The invention will be explained in more detail with reference to an exemplary embodiment. In the attached drawing shows:
  • FIG. 1 : a schematic representation of the lubricant circuit and
  • FIG. 2 : a schematic representation of the attachment of the stripping element. 2

Zur Glättung oder Entwässerung der Faserstoffbahn wird diese meist durch einen oder mehrere Pressspalte geführt, an der eine durchbiegungsgesteuerte Presswalze beteiligt ist.For smoothing or dewatering of the fibrous web, this is usually performed by one or more press nips, in which a deflection-controlled press roll is involved.

Diese durchbiegungsgesteuerten Presswalzen besitzen einen zylindrischen Walzenmantel 1, der rotierbar um einen feststehenden Träger 9 gelagert ist.These deflection-controlled press rolls have a cylindrical roll shell 1, which is mounted rotatably about a stationary support 9.

Dabei stützt sich der Walzenmantel 1 auf einem oder mehreren axial nebeneinander angeordneten, hydraulischen Stützelementen ab. Diese Stützelemente drücken den Walzenmantel 1 zur Bildung eines Pressspaltes in Richtung einer Gegenwalze oder eines Bandes.In this case, 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.

Der Spalt zwischen den Stützelementen und dem Walzenmantel 1 wird mit einem Schmiermittel in Form von Öl hydrostatisch und/oder hydrodynamisch geschmiert. Dabei bildet sich an der Innenseite des Walzenmantels 1 ein Schmiermittelfilm 3.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. In this case, a lubricant film 3 forms on the inside of the roll shell 1.

Wegen der Rotation des Walzenmantels 1 kommt es zur Flüssigkeitsreibung und einer Erwärmung der Schmierfluids mit den beschriebenen Nachteilen.Because of the rotation of the roll shell 1 there is fluid friction and heating of the lubricating fluid with the disadvantages described.

Außerdem lagern sich im Schmiermittelfilm 3 auch Schmutzpartikel ab, die die Schmierfähigkeit beeinträchtigen.In addition, deposited in the lubricant film 3 and dirt particles that affect the lubricity.

Daher wird der Schmiermittelfilm 3 oder ein Teil davon von mehreren axial nebeneinander angeordneten Abstreifelementen 2 mit einer abgerundeten Schabfläche von der Innenfläche des Walzenmantels 1 abgeführt.Therefore, 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.

Die Schabflächen verlaufen achsparallel und schonen durch ihre abgerundete Form den Walzenmantel 1.The scraping surfaces are axially parallel and protect the roll shell 1 by their rounded shape.

Die Abstreifelemente 2 erstrecken sich insgesamt über die gesamte axiale Länge des Walzenmantels 1 und erfassen so den gesamten Schmiermittelfilm 3.
Zwischen den Abstreifelementen 2 sollte kein Abstand bestehen.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.

Durch den Einsatz von mehreren, relativ kurzen Abstreifelementen 2 ist eine bessere Anpassung der Schabflächen an die Innenseite des Walzenmantels 1 möglich.By using a plurality of relatively short stripping elements 2, a better adaptation of the scraper surfaces to the inside of the roll mantle 1 is possible.

Dies ist wegen des Durchhangs der oft bis zu 10 m langen Walzenmäntel 1 und dem von den Stützelementen ausgehenden Hub des Walzenmantels 1 zur Gegenwalze besonders wichtig.This is particularly important because of the slack of the often up to 10 m long roll shells 1 and the outgoing of the support elements stroke of the roll shell 1 to the counter roll.

Außerdem vereinfacht dies die Realisierung eines Kontakts zwischen der Schabfläche des Abstreifelementes 2 und der Innenseite des Walzenmantels 2.In addition, this simplifies the realization of a contact between the scraping surface of the stripping element 2 and the inside of the roll mantle 2.

Hierzu sind die Abstreifelemente 2, wie in Figur 2 zu sehen, über zwei Gelenke 10 am Träger 9 befestigt. Beispielhaft erfolgt über ein Federelement die Anpressung des Abstreifelementes 2 an die Innenseite des Walzenmantels 1.For this purpose, the stripping elements 2, as in FIG. 2 to see attached via two joints 10 on the carrier 9. By way of example, the pressing of the stripping element 2 against the inside of the roll mantle 1 takes place via a spring element.

Vom Abstreifelement 2 wird das abgestreifte Schmiermittel zu einem Abführkanal 4 geleitet. Dieser Abführkanal 4 ist mit einer Unterdruckquelle verbunden und saugt so das Schmiermittel gemäß Figur 1 über ein Filter 6 und einen Kühler 7 zu einer steuerbaren Pumpe 8.From the stripping element 2, 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

Wegen des Kontakts des Abstreifelementes 2 mit dem Walzenmantel 1 und dem Unterdruck werden dabei auch kleinste Schmutzpartikel im Schmiermittelfilm 3 mit abgeführt.Because of the contact of the stripping element 2 with the roll shell 1 and the negative pressure thereby even the smallest dirt particles in the lubricant film 3 are removed with.

Der nicht abgeführte Teil des Schmiermittelfilms 3 gelangt über einen Überlauf des Abstreifelementes 2 wieder an die Innenseite des Walzenmantels 1.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. 1

Von der Pumpe 8 gelangt das gereinigte und gekühlte Schmiermittel über eine Zuführleitung 5 in Rotationsrichtung nach dem Abstreifelement 2 wieder zur Innenseite des Walzenmantels 1.From the pump 8, 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. 1

Zur konstruktiven Vereinfachung bilden die Enden der Abführ- 4, Zuführleitung 5 sowie das Abstreifelement 2 eine Einheit. Mit der Fixierung der Leitungen 4,5 am Abstreifelement 2 wird auch ein kurzer Umfangsabstand zwischen Abführung und Zuführung des Schmiermittels gewährleistet.For constructive simplification, 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.

Entsprechend der Temperatur des Schmiermittelfilms 3 wird eine bestimmte Menge an Schmiermittel abgeführt und die gleiche Menge Schmiermittel mit einer bestimmten Temperatur wieder zugeführt.According to the temperature of the lubricant film 3, a certain amount of lubricant is discharged and the same amount of lubricant at a certain temperature is supplied again.

Dadurch kann ein ausgeglichenes Temperaturniveau über die gesamte Walze erreicht werden.As a result, a balanced temperature level can be achieved over the entire roller.

Durch die bedarfsgerechte Zuführung von kühlem Schmiermittel und die Bildung eines Schmiermittelkreislaufs können die Kosten beträchtlich gesenkt werden.The on-demand supply of cool lubricant and the formation of a lubricant circuit can significantly reduce costs.

Claims (13)

  1. Press roll of a machine for producing and/or finishing a paper, board, tissue or other fibrous web, having a rotating cylindrical roll shell (1) which is supported on at least one supporting element of a stationary carrier (9), the running surface of the supporting element that comes into contact with the inside of the roll shell (1) being lubricated with a liquid lubricant and the lubricant being wiped off the inside of the roll shell (1) with the aid of at least one wiping element (2), cooler lubricant being applied to the inside of the roll shell (1) after the wiping element (2) in the direction of rotation of the roll shell (1),
    characterized in that
    the distance between the wiping and the application of the lubricant is between 0.1 and 100 mm, and in that a drain line (4) assigned to the wiping element (2) in order to carry the lubricant away out of the press roll, and a feed line (5) for the lubricant to be applied are connected to the wiping element (2).
  2. Press roll according to Claim 1,
    characterized in that
    the distance between the wiping off and the application of the lubricant is between 0.2 and 10 mm.
  3. Press roll according to Claim 1 or 2,
    characterized in that
    the drain line (4) is connected to a source of negative pressure.
  4. Press roll according to one of the preceding claims,
    characterized in that
    the wiping element/s (2) extend/s over more than 50% of the length of the roll shell (1).
  5. Press roll according to one of the preceding claims,
    characterized in that
    the wiping element/s (2) extend/s over more than 75% of the length of the roll shell (1).
  6. Press roll according to one of the preceding claims,
    characterized in that
    the wiping element/s (2) extend/s over more than 90% of the length of the roll shell (1).
  7. Press roll according to one of the preceding claims,
    characterized in that
    the minimum distance between the wiping element (2) and the inside of the roll shell (1) is less than 1 mm.
  8. Press roll according to one of the preceding claims,
    characterized in that
    the wiping element (2) is in contact with the inside of the roll shell (1).
  9. Press roll according to Claim 8,
    characterized in that
    the wiping element is fixed to the carrier such that it can be pressed against the inside of the roll shell (1).
  10. Press roll according to one of the preceding claims,
    characterized in that
    the wiping element (2) has an overflow for leading part of the lubricant onward into the part of the inside of the roll shell (1) that follows in the direction of rotation.
  11. Press roll according to one of Claims 1 to 9,
    characterized in that
    the wiping element (2) has no overflow.
  12. Press roll according to one of the preceding claims,
    characterized in that
    the lubricant carried away is conditioned, in particular filtered and cooled and subsequently recycled.
  13. Press roll according to one of the preceding claims,
    characterized in that
    the quantity and/or the temperature of the lubricant supplied is controlled as a function of the temperature of the lubricant led away.
EP07107697A 2006-07-24 2007-05-08 Press roller Expired - Fee Related EP1882775B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006034043A DE102006034043A1 (en) 2006-07-24 2006-07-24 press roll

Publications (2)

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

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ID=38648229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07107697A Expired - Fee Related EP1882775B1 (en) 2006-07-24 2007-05-08 Press roller

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EP (1) EP1882775B1 (en)
AT (1) ATE520823T1 (en)
DE (1) DE102006034043A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI123370B (en) 2007-11-07 2013-03-15 Metso Paper Inc A method for controlling circulation lubrication and circulation lubrication systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19703966A1 (en) * 1997-02-03 1998-08-06 Voith Sulzer Papiermasch Gmbh Belt press unit with fluid wiping device and method for operating the belt press unit
DE19903843C1 (en) * 1999-02-01 2000-07-06 Voith Sulzer Papiertech Patent Roller for a web processing machine has inner supports at the cylinder mantle and scraper lips on levers with a take-off channel for the fluid leading to an offset collection zone
JP2005221027A (en) * 2004-02-06 2005-08-18 Mitsubishi Heavy Ind Ltd Oil collecting device for roll device

Also Published As

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

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