EP1029976A1 - Roller - Google Patents

Roller Download PDF

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Publication number
EP1029976A1
EP1029976A1 EP99103084A EP99103084A EP1029976A1 EP 1029976 A1 EP1029976 A1 EP 1029976A1 EP 99103084 A EP99103084 A EP 99103084A EP 99103084 A EP99103084 A EP 99103084A EP 1029976 A1 EP1029976 A1 EP 1029976A1
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EP
European Patent Office
Prior art keywords
roller
condensate
condensation
riser
channels
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
EP99103084A
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German (de)
French (fr)
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EP1029976B1 (en
Inventor
Ludwig Halenthal
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.)
Walzen Irle GmbH
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Walzen Irle GmbH
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Publication date
Application filed by Walzen Irle GmbH filed Critical Walzen Irle GmbH
Priority to EP99103084A priority Critical patent/EP1029976B1/en
Priority to AT99103084T priority patent/ATE221154T1/en
Publication of EP1029976A1 publication Critical patent/EP1029976A1/en
Application granted granted Critical
Publication of EP1029976B1 publication Critical patent/EP1029976B1/en
Anticipated expiration legal-status Critical
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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
    • D21G1/0253—Heating or cooling the rolls; Regulating the temperature
    • D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
    • 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
    • D21F5/10—Removing condensate from the interior of the cylinders

Definitions

  • the invention relates to a roller according to the preamble of claim 1.
  • rollers are used for machining and processing in tensionable webs processing materials used, for example for textile, plastic and in particular Paper webs.
  • the field of application of such rollers, which in different Dimensioning is therefore the area of industrial production, in particular the coloring, embossing or printing of the above Tracks.
  • the heating is carried out as evenly as possible over the circumference of the roller to avoid thermal stress.
  • Such rollers therefore have special features advantageous peripheral channels, which are distributed side by side over the circumference of the roller are arranged. These essentially follow the axial course of the roller and can vary in number depending on the dimensioning Roll be provided.
  • a heating medium is passed through the channels can be designed differently depending on the application.
  • Condensate risers provided this in a central, the pin of the roller penetrating discharge duct. This is a significant one Pressure difference required, that of the centrifugal force acting on the condensate counteracts during the rotation of the roller. This is the condensate drain difficult. In addition, the corresponding condensate risers can become blocked come.
  • the invention is based on the problem of removing the condensate from the circumferential side Improve heating channels.
  • the number of condensate risers is particularly advantageous compared to the axial ones Channels reduced and the cross-section of the condensate risers enlarged. With the enlarged cross section reduces the risk of blockage of the condensate risers, condensate drainage is faster and more reliable.
  • the injector nozzle is particularly advantageously controllable, so that the respective roller dimensions and / or speed of rotation correspondingly adapted addition of slip steam can occur.
  • the roller 1 is at least one-sided (in the exemplary embodiment on both sides) with flange pins 2 and 3. On at least one the flange pin 2, 3 can attack a drive for the roller 1.
  • the roller 1 has a roller body 4 in the central area, which has the flange pins 2 and 3 facing ends by screwable and heat-insulating Lid 5, 6 can be closed.
  • the roller 1 is over a heating medium, in particular a vaporous heating medium such as water vapor, heatable.
  • a heating medium in particular a vaporous heating medium such as water vapor, heatable.
  • FIG. 2 via the The circumference of the roller body 4 is spaced apart and essentially distributed axially extending channels 8 are provided, through which the heating medium is conducted in order to thus heat the outer surface 4a as well as possible to reach the roller body 4.
  • the axial channels 8 extend almost over the entire length of the roller body 4 and conduct the heating medium, in particular the water vapor, axially to the course of the roller body 4 through it.
  • the condensate that forms is in annular, concentric to the roller axis 9 extending Collection rooms 10, 11, 12, 13 collected, with the collection rooms 10 and 11 on the side of the roller 1 facing the pin 2, which have a discharge channel 16 for the condensate. That collected in the collection rooms 12 and 13 By contrast, condensate is passed through further axial channels 14 of the opposite one Roll side fed. There it becomes in the annular space 11 collected, as well as the collecting space 10 located on the same side is connected to a condensate riser 15.
  • the condensate riser 15 extends in a radial alignment with the central one Condensate drainage duct 16. Therefore, the annular collecting space on this side opens out 10 via an intermediate channel 10a in the condensate riser 15 as well the opposite collection rooms 12, 13 above that on a second pitch circle lying, axial channel 14 and the annular plenum 11. Inside the condensate riser 15 prevails to overcome those acting on the condensate and this centrifugal force pressing against the outer surface 4a of the roller body a pressure difference, with the help of which the condensate has a central effect Experienced force component that allows removal through the central channel 16.
  • the condensate riser 15 is used to supply the slip steam Provide injector nozzle17.
  • the slip vapor becomes concentric over one ring channel 18 lying to the central discharge channel 16 is introduced into the roller, then fed via a riser pipe 19 to a control valve 20 before it Injector nozzle 17 is introduced into the condensate riser.
  • the control valve 20 can either manually or remotely. The amount of slip steam injected can therefore be regulated depending on the speed and the heating medium used become.
  • each of the condensate risers there is a correspondingly acute and the axis 9 of the roller 1 facing an injector nozzle 17 for the Hatching steam.
  • 4 balancing weights 26 can be mounted on the edge of the roller body with the lids 5 and 6 in connection and via adjusting screws or the like can be readjusted at any time. A static as well as dynamic Balancing the roller 1 is thereby facilitated. By changing the Screw-in angle of the screw can result in a corresponding redistribution of the balance weight 26 can be made.
  • a roller 1 designed as a heat exchanger is created, due to the fact that the slip vapor can be fed into the riser pipe 15 and the small number of condensate risers 15 with a single annular plenum 10, with which all heating channels 8 are connected, is connected, an optimized implementation of the heating medium, especially water vapor, enabled by the roller 1.
  • a very even temperature profile is achieved so that the deformation of the roller 1 remains small. Due to the controllability and adjustability via the valve 20, the injection of slip steam depending on Carry out requirements so that its consumption is low and easy to dose is.
  • the problem of a blockage of the condensate return lines due to small cross-sections and the problem of a very high pressure difference to be applied are largely eliminated.

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  • Drying Of Solid Materials (AREA)
  • Paper (AREA)

Abstract

The roller (1) for use with web material, such as of paper, has a heating system using a medium, and especially steam, fed into the roller and distributed round its circumference to give a heated roller surface. The steam is carried by axial channels (8) along the roller length, which terminate in a common ring-shaped condensation collection zone (12,13) with at least one condensation riser to an axial condensation exhaust channel (16). The condensation riser has a jet to inject steam into it to carry the condensation away. The injector jet is aligned at an acute angle against the condensation riser, to give an axial movement component on the injection line. The injector jet has a controlled position setting at the steam feed line. There are fewer condensation risers than condensation channels (8), using 1-4 risers at a condensation collection zone. The roller (1) has a roller body with a projecting journal at least at one end. The end sides of the roller body are covered by thermal insulation covers (5,6), screwed into place.

Description

Die Erfindung bezieht sich auf eine Walze nach dem Oberbegriff des Anspruchs 1.The invention relates to a roller according to the preamble of claim 1.

Derartige Walzen werden zur Be- und Verarbeitung von in spannbaren Bahnen zu verarbeitenden Werkstoffen eingesetzt, bspw. für Textil-, Kunststoff- und insbesondere Papierbahnen. Das Einsatzgebiet solcher Walzen, die in verschiedenen Dimensionierungen herzustellen sind, ist daher der Bereich der industriellen Produktion, insbesondere die Einfärbung, Aufprägung oder Bedruckung der genannten Bahnen.Such rollers are used for machining and processing in tensionable webs processing materials used, for example for textile, plastic and in particular Paper webs. The field of application of such rollers, which in different Dimensioning is therefore the area of industrial production, in particular the coloring, embossing or printing of the above Tracks.

Für bestimmte Zwecke ist es wünschenswert, die Walzen heizbar auszubilden, wobei die Beheizung über den Umfang der Walze möglichst gleichmäßig erfolgen soll, um Wärmespannungen zu vermeiden. Solche Walzen weisen daher besonders vorteilhaft periphere Kanäle auf, die über den Umfang der Walze verteilt nebeneinander angeordnet sind. Diese folgen im wesentlichen dem axialen Verlauf der Walze und können je nach Dimensionierung in unterschiedlicher Zahl an der Walze vorgesehen sein. Durch die Kanäle wird ein Heizmedium geleitet, das je nach Einsatzzweck unterschiedlich ausgebildet sein kann. Besondere Vorteile offenbart die Benutzung von Wasserdampf als Heizmedium, da dieses eine besonders gleichmäßige Beheizung des Walzenkörpers gewährleistet und daß bereichsweise, insbesondere an den kältesten Stellen, während der Durchleitung durch die Walze kondensiert und dadurch die bei der Kondensation frei werdende Energie als Heizenergie an die Walze abgibt. Dieses sichert eine besonders gleichmäßige Beheizung der Walze. For certain purposes it is desirable to make the rollers heatable, the heating is carried out as evenly as possible over the circumference of the roller to avoid thermal stress. Such rollers therefore have special features advantageous peripheral channels, which are distributed side by side over the circumference of the roller are arranged. These essentially follow the axial course of the roller and can vary in number depending on the dimensioning Roll be provided. A heating medium is passed through the channels can be designed differently depending on the application. Particular advantages revealed the use of steam as a heating medium, as this is a special one ensures uniform heating of the roller body and that in some areas, especially in the coldest places, during the passage condensed by the roller and thereby the liberated during the condensation Releases energy as heating energy to the roller. This ensures a special one uniform heating of the roller.

Um das gebildete Kondensat aus den umfangseitigen Kanälen abzuführen, sind Kondensatsteiger vorgesehen, die diese in einen zentralen, den Zapfen der Walze durchdringenden Abführungskanal überführen sollen. Hierfür ist eine erhebliche Druckdifferenz erforderlich, die der auf das Kondensat wirkenden Zentrifugalkraft während der Rotation der Walze entgegenwirkt. Dadurch ist die Kondensatabfuhr erschwert. Zudem kann es zu Verstopfungen der entsprechenden Kondensatsteiger kommen.To drain the condensate formed from the channels on the circumference, are Condensate risers provided this in a central, the pin of the roller penetrating discharge duct. This is a significant one Pressure difference required, that of the centrifugal force acting on the condensate counteracts during the rotation of the roller. This is the condensate drain difficult. In addition, the corresponding condensate risers can become blocked come.

Der Erfindung liegt das Problem zugrunde, die Kondensatabfuhr aus den umfangseitigen Heizkanälen zu verbessern.The invention is based on the problem of removing the condensate from the circumferential side Improve heating channels.

Die Erfindung löst dieses Problem durch die Merkmale des Anspruchs 1. Hinsichtlich weiterer vorteilhafter Ausgestaltungen wird auf die Ansprüche 2 bis 6 verwiesen.The invention solves this problem by the features of claim 1. Regarding Further advantageous embodiments are referred to claims 2 to 6.

Durch den Einsatz einer Injektordüse für Schlupfdampf in den Kondensatsteiger kann die Druckdifferenz zur Abfuhr des Kondensats deutlich verringert werden.By using an injector nozzle for slip steam in the condensate riser the pressure difference to drain the condensate can be significantly reduced.

Besonders vorteilhaft ist die Zahl der Kondensatsteiger gegenüber den axialen Kanälen verringert und der Querschnitt der Kondensatsteiger vergrößert. Mit dem vergrößerten Querschnitt ist eine Verstopfungsgefahr der Kondensatsteiger verringert, die Kondensatabfuhr erfolgt dadurch schneller und zuverlässiger.The number of condensate risers is particularly advantageous compared to the axial ones Channels reduced and the cross-section of the condensate risers enlarged. With the enlarged cross section reduces the risk of blockage of the condensate risers, condensate drainage is faster and more reliable.

Besonders vorteilhaft ist die Injektordüse regelbar, so daß der jeweiligen Walzendimensionierung und/oder Rotationsgeschwindigkeit entsprechend angepaßte Zugabe von Schlupfdampf erfolgen kann. The injector nozzle is particularly advantageously controllable, so that the respective roller dimensions and / or speed of rotation correspondingly adapted addition of slip steam can occur.

Weitere Vorteile und Merkmale ergeben sich aus einem in der Zeichnung dargestellten und nachfolgend beschriebenen Ausführungsbeispiel des Gegenstandes der Erfindung. In der Zeichnung zeigt:

Figur 1
eine Draufsicht auf eine erfindungsgemäße Walze,
Figur 2
die Walze nach Fig. 1 im Längsschnitt,
Figur 3
die Einzelheit III in Fig. 2,
Figur 4
die Einzelheit IV in Fig. 2,
Figur 5
eine schematische Querschnittsansicht im Bereich etwa einer Schnittebene V-V in Fig. 2.
Further advantages and features result from an exemplary embodiment of the subject matter of the invention shown in the drawing and described below. The drawing shows:
Figure 1
a plan view of a roller according to the invention,
Figure 2
1 in longitudinal section,
Figure 3
the detail III in Fig. 2,
Figure 4
the detail IV in Fig. 2,
Figure 5
2 shows a schematic cross-sectional view in the area of approximately a sectional plane VV in FIG. 2.

Im einzelnen ist die Walze 1 gemäß Fig. 1 zumindest einseitig (im Ausführungsbeispiel an beiden Seiten) mit Flanschzapfen 2 und 3 versehen. An zumindest einem der Flanschzapfen 2, 3 kann ein Antrieb für die Walze 1 angreifen. Die Walze 1 weist im mittleren Bereich einen Walzenkörper 4 auf, der an seinen stirnseitigen, den Flanschzapfen 2 und 3 zugewandten Enden durch aufschraubbare und wärmeisolierende Deckel 5, 6 verschließbar ist.1 is at least one-sided (in the exemplary embodiment on both sides) with flange pins 2 and 3. On at least one the flange pin 2, 3 can attack a drive for the roller 1. The roller 1 has a roller body 4 in the central area, which has the flange pins 2 and 3 facing ends by screwable and heat-insulating Lid 5, 6 can be closed.

Die Walze 1 ist über ein Heizmedium, insbesondere ein dampfförmiges Heizmedium wie etwa Wasserdampf, beheizbar. Hierzu sind, wie Fig. 2 zeigt, über den Umfang des Walzenkörpers 4 verteilt zueinander beabstandete und im wesentlichen axial verlaufende Kanäle 8 vorgesehen, durch die hindurch das Heizmedium geleitet wird, um somit eine möglichst gut verteilte Beheizung der Außenfläche 4a des Walzenkörpers 4 zu erreichen. The roller 1 is over a heating medium, in particular a vaporous heating medium such as water vapor, heatable. For this purpose, as shown in FIG. 2, via the The circumference of the roller body 4 is spaced apart and essentially distributed axially extending channels 8 are provided, through which the heating medium is conducted in order to thus heat the outer surface 4a as well as possible to reach the roller body 4.

Die axialen Kanäle 8 erstrecken sich nahezu über die gesamte Länge des Walzenkörpers 4 und leiten das Heizmedium, insbesondere den Wasserdampf, axial zum Verlauf des Walzenkörpers 4 durch diesen hindurch. Das sich bildende Kondensat wird in ringförmigen, sich konzentrisch zur Walzenachse 9 erstreckenden Sammelräumen 10, 11, 12, 13 gesammelt, wobei die Sammelräume 10 und 11 auf der dem Zapfen 2 zugewandten Seite der Walze 1 liegen, die einen Abführungskanal 16 für das Kondensat aufweist. Das in den Sammelräumen 12 und 13 aufgefangene Kondensat wird hingegen über weitere axiale Kanäle 14 der gegenüberliegenden Walzenseite zugeführt. Dort wird es in dem ringförmigen Raum 11 gesammelt, der ebenso wie der auf der gleichen Seite befindliche Sammelraum 10 mit einem Kondensatsteiger 15 verbunden ist.The axial channels 8 extend almost over the entire length of the roller body 4 and conduct the heating medium, in particular the water vapor, axially to the course of the roller body 4 through it. The condensate that forms is in annular, concentric to the roller axis 9 extending Collection rooms 10, 11, 12, 13 collected, with the collection rooms 10 and 11 on the side of the roller 1 facing the pin 2, which have a discharge channel 16 for the condensate. That collected in the collection rooms 12 and 13 By contrast, condensate is passed through further axial channels 14 of the opposite one Roll side fed. There it becomes in the annular space 11 collected, as well as the collecting space 10 located on the same side is connected to a condensate riser 15.

Der Kondensatsteiger 15 erstreckt sich in radialer Ausrichtung zum zentralen Kondensatabführungskanal 16. Daher mündet sowohl der diesseitige Ringsammelraum 10 über einen Zwischenkanal 10a in den Kondensatsteiger 15 als auch die gegenüberliegenden Sammelräume 12, 13 über dem auf einem zweiten Teilkreis liegende, axiale Kanal 14 und den Ringsammelraum 11. Innerhalb des Kondensatsteigers 15 herrscht zur Überwindung der auf das Kondensat wirkenden und dieses gegen die Außenfläche 4a des Walzenkörpers drückende Zentrifugalkraft eine Druckdifferenz, mit deren Hilfe das Kondensat eine zentral wirkende Kraftkomponente erfährt, die einen Abtransport durch den zentralen Kanal 16 ermöglicht.The condensate riser 15 extends in a radial alignment with the central one Condensate drainage duct 16. Therefore, the annular collecting space on this side opens out 10 via an intermediate channel 10a in the condensate riser 15 as well the opposite collection rooms 12, 13 above that on a second pitch circle lying, axial channel 14 and the annular plenum 11. Inside the condensate riser 15 prevails to overcome those acting on the condensate and this centrifugal force pressing against the outer surface 4a of the roller body a pressure difference, with the help of which the condensate has a central effect Experienced force component that allows removal through the central channel 16.

Zudem ist der Kondensatsteiger 15 mit einer der Schlupfdampfzuführung dienenden Injektordüse17 versehen. Der Schlupfdampf wird über einen konzentrisch zum zentralen Abführungskanal 16 liegenden Ringkanal 18 in die Walze eingeleitet, dann über ein Steigrohr 19 einem Regelventil 20 zugeführt, ehe es über die Injektordüse 17 in den Kondensatsteiger eingeleitet wird. Das Regelventil 20 kann entweder von Hand oder fernbetätigt sein. Die Menge des injizierten Schlupfdampfes kann daher je nach Drehzahl und eingesetztem Heizmedium reguliert werden.In addition, the condensate riser 15 is used to supply the slip steam Provide injector nozzle17. The slip vapor becomes concentric over one ring channel 18 lying to the central discharge channel 16 is introduced into the roller, then fed via a riser pipe 19 to a control valve 20 before it Injector nozzle 17 is introduced into the condensate riser. The control valve 20 can either manually or remotely. The amount of slip steam injected can therefore be regulated depending on the speed and the heating medium used become.

Eine Wärmeisolation des gesamten stirnseitigen Bereichs, auch der Injektordüse 17 sowie ihrer Zuführung und des Regelventils 20, ist durch die stirnseitigen Schraubdeckel 5, 6 erreicht. Der Wärmeverlauf ist daher über den gesamten Walzenkörper 4 außerordentlich gleichmäßig gehalten.Thermal insulation of the entire front area, including the injector nozzle 17 and its supply and the control valve 20 is through the front Screw cap 5, 6 reached. The heat flow is therefore over the entire roller body 4 kept extremely even.

Durch die Einleitung des Schlupfdampfes durch die Injektordüse 17 wird die Dichte des im Kondensatsteiger befindlichen Dampfgemisches verringert, so daß die zum Austragen des Kondensats erforderliche Druckdifferenz gemindert werden kann.By introducing the slip steam through the injector 17, the Density of the steam mixture in the condensate riser reduced, so that the pressure difference required to discharge the condensate can be reduced can.

Wie in Fig. 5 zu sehen ist, ist die Zahl der Kondensatsteiger 15 gegenüber der Zahl der Heizkanäle 8 verringert, so daß die Kondensatsteiger einen relativ großen Querschnitt aufweisen können. Ein Verstopfen der Kondensatsteiger 15 ist dadurch zuverlässig verhindert. Maximal vier Kondensatsteiger 15 sind dabei über den Vollkreis verteilt; je nach Auslegung der Walze 1 und deren Anforderungen kann auch ein einzelner Kondensatsteiger 15 mit entsprechend großem Querschnitt genügen.As can be seen in Fig. 5, the number of condensate rises 15 compared to that Number of heating channels 8 reduced, so that the condensate risers a relatively large Can have cross-section. The condensate riser 15 is blocked thereby reliably prevented. A maximum of four condensate risers 15 are over distributed the full circle; depending on the design of roller 1 and its requirements can also be a single condensate riser 15 with a correspondingly large cross section are enough.

In jedem der Kondensatsteiger befindet sich in entsprechend spitzwinkliger und der Achse 9 der Walze 1 zugewandte Orientierung eine Injektordüse 17 für den Schlupfdampf.In each of the condensate risers there is a correspondingly acute and the axis 9 of the roller 1 facing an injector nozzle 17 for the Hatching steam.

Auf der gegenüberliegenden Seite sind die äußeren Heizkanäle 8 mit den inneren Rückführkanälen 14 über Kondensatsteiger 25 verbunden, die sich nicht bis zur Achse 9 der Walze 1 erstrecken, sondern lediglich die Verbindung dieser beiden Kanäle 8, 14 sicherstellen. Insofern ist hier auch eine Schlupfdampfeinleitung entbehrlich. On the opposite side are the outer heating channels 8 with the inner ones Return channels 14 connected via condensate risers 25, which are not up to Axis 9 of the roller 1 extend, but only the connection of these two Ensure channels 8, 14. In this respect, the introduction of slip steam is unnecessary.

Extern sind am Rande des Walzenkörpers 4 Auswuchtgewichte 26 montierbar, die mit den Deckeln 5 bzw. 6 in Verbindung stehen und über Stellschrauben oder ähnliches jederzeit nachjustiert werden können. Ein statisches wie auch dynamisches Auswuchten der Walze 1 ist dadurch erleichtert. Mittels Veränderung des Eindrehwinkels der Schraube kann eine entsprechende Umlagerung des Auswuchtgewichts 26 vorgenommen werden.Externally, 4 balancing weights 26 can be mounted on the edge of the roller body with the lids 5 and 6 in connection and via adjusting screws or the like can be readjusted at any time. A static as well as dynamic Balancing the roller 1 is thereby facilitated. By changing the Screw-in angle of the screw can result in a corresponding redistribution of the balance weight 26 can be made.

Insgesamt ist daher eine als Wärmetauscher ausgebildete Walze 1 geschaffen, die aufgrund der Zuführbarkeit des Schlupfdampfes in das Steigrohr 15 und aufgrund der geringen Zahl der Kondensatsteiger 15, die mit einem einzigen Ringsammelraum 10, mit dem alle Heizkanäle 8 in Verbindung stehen, verbunden ist, eine optimierte Durchführung des Heizmediums, insbesondere Wasserdampfes, durch die Walze 1 ermöglicht. Ein sehr gleichmäßiges Temperaturprofil wird erreicht, so daß die Verformung der Walze 1 gering bleibt. Durch die Regelbarkeit und Einstellbarkeit über das Ventil 20 ist die Injektion von Schlupfdampf je nach Erfordernissen durchzuführen, so daß dessen Verbrauch gering und gut dosierbar ist. Das Problem einer Verstopfung der Kondensatrückführungsleitungen aufgrund geringer Querschnitte sowie das Problem einer sehr hohen anzulegenden Druckdifferenz sind damit weitgehend behoben. Overall, therefore, a roller 1 designed as a heat exchanger is created, due to the fact that the slip vapor can be fed into the riser pipe 15 and the small number of condensate risers 15 with a single annular plenum 10, with which all heating channels 8 are connected, is connected, an optimized implementation of the heating medium, especially water vapor, enabled by the roller 1. A very even temperature profile is achieved so that the deformation of the roller 1 remains small. Due to the controllability and adjustability via the valve 20, the injection of slip steam depending on Carry out requirements so that its consumption is low and easy to dose is. The problem of a blockage of the condensate return lines due to small cross-sections and the problem of a very high pressure difference to be applied are largely eliminated.

BezugszeichenReference numerals

11
Walzeroller
22nd
FlanschzapfenFlange spigot
33rd
FlanschzapfenFlange spigot
44th
WalzenkörperRoller body
4a4a
AußenflächeOutside surface
55
Deckelcover
66
Deckelcover
88th
Kanälechannels
99
WalzenachseRoller axis
1010th
SammelraumGathering room
10a10a
ZwischenkanalIntermediate channel
1111
SammelraumGathering room
1212th
SammelraumGathering room
1313
SammelraumGathering room
1414
Kanälechannels
1515
KondensatsteigerCondensate riser
1616
AbführungskanalExhaust duct
1717th
InjektordüseInjector nozzle
1818th
RingkanalRing channel
1919th
SteigrohrRiser pipe
2020th
RegelventilControl valve
2525th
KondensatsteigerCondensate riser
2626
AuswuchtgewichteBalancing weights

Claims (6)

Walze (1) zum Einsatz bei in spannbaren Bahnen zu verarbeitenden Werkstoffen, wie etwa in der Papierindustrie, wobei die Walze (1) mit einem Heizmedium, insbesondere Wasserdampf, beaufschlagbar ist, daß in die Walze (1) einleitbar und in über den Walzenumfang verteilt angeordneten, im wesentlichen axialen Kanälen (8) über die Walzenerstreckung transportierbar ist, wobei die Kanäle (8) zumindest einen Ends in einen gemeinsamen, im wesentlichen ringförmigen Kondensatsammelraum (10 bis 13) münden, von dem sich zumindest ein Kondensatsteiger (15) zu einem axialen Kondensatabführungskanal (16) erstreckt, wobei dem Kondensatsteiger (15) eine Injektordüse (17) zur Einleitung von Schlupfdampf in den Kondensatsteiger (15) zugeordnet ist.Roller (1) for use with materials to be processed in tensionable webs, such as in the paper industry, the roller (1) with a heating medium, in particular water vapor, can be acted upon in the roller (1) can be introduced and essentially distributed over the circumference of the roller axial channels (8) can be transported over the roll extension, wherein the channels (8) have at least one end in a common, substantially annular condensate collection space (10 to 13) open, of which at least a condensate riser (15) to an axial condensate discharge duct (16) extends, the condensate riser (15) having an injector nozzle (17) Initiation of slip steam is assigned to the condensate riser (15). Walze nach Anspruch 1,
dadurch gekennzeichnet,
daß die Injektordüse (17) in spitzem Winkel gegenüber dem Kondensatsteiger (15) angeordnet ist und eine axiale Komponente der Injektionsrichtung aufweist.Roll according to claim 1,
characterized by
that the injector nozzle (17) is arranged at an acute angle with respect to the condensate riser (15) and has an axial component of the direction of injection. Walze nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet,
daß die Zahl der Kondensatsteiger (15) gegenüber der Zahl der axialen Kanäle (8) verringert ist. Roll according to one of claims 1 or 2,
characterized by
that the number of condensate risers (15) is reduced compared to the number of axial channels (8). Walze nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß ein bis vier Kondensatsteiger (15) einem Kondensatsammelraum (10) zugeordnet sind.Roll according to one of claims 1 to 3,
characterized by
that one to four condensate risers (15) are assigned to a condensate collecting space (10). Walze nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß die Injektordüse (17) hinsichtlich ihrer Schlupfdampfeinleitung regelbar ist.Roller according to one of claims 1 to 4,
characterized by
that the injector nozzle (17) can be regulated with regard to its introduction of slip steam. Walze nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß die Walze (1) einen Walzenkörper (4) aufweist, der stirnseitig zumindest einen Ends von einem Zapfen überragt wird und daß der Walzenkörper (4) stirnseitig von aufschraubbaren Wärmeisolationsdeckeln (5, 6) begrenzt ist.Roll according to one of claims 1 to 5,
characterized by
that the roller (1) has a roller body (4), at least one end of which is protruded at the end by a pin, and that the roller body (4) is delimited on the end face by screw-on heat insulation covers (5, 6).
EP99103084A 1999-02-17 1999-02-17 Roller Expired - Lifetime EP1029976B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99103084A EP1029976B1 (en) 1999-02-17 1999-02-17 Roller
AT99103084T ATE221154T1 (en) 1999-02-17 1999-02-17 ROLLER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99103084A EP1029976B1 (en) 1999-02-17 1999-02-17 Roller

Publications (2)

Publication Number Publication Date
EP1029976A1 true EP1029976A1 (en) 2000-08-23
EP1029976B1 EP1029976B1 (en) 2002-07-24

Family

ID=8237567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103084A Expired - Lifetime EP1029976B1 (en) 1999-02-17 1999-02-17 Roller

Country Status (2)

Country Link
EP (1) EP1029976B1 (en)
AT (1) ATE221154T1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102400409A (en) * 2011-09-28 2012-04-04 大连明珠机械有限公司 Thermal calender roll for paper machine calender machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407239A1 (en) * 1994-03-04 1995-09-07 Schwaebische Huettenwerke Gmbh Steam heated roller
EP0768424A2 (en) * 1995-10-13 1997-04-16 Schwäbische Hüttenwerke GmbH Heated roll

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407239A1 (en) * 1994-03-04 1995-09-07 Schwaebische Huettenwerke Gmbh Steam heated roller
EP0768424A2 (en) * 1995-10-13 1997-04-16 Schwäbische Hüttenwerke GmbH Heated roll

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102400409A (en) * 2011-09-28 2012-04-04 大连明珠机械有限公司 Thermal calender roll for paper machine calender machine

Also Published As

Publication number Publication date
EP1029976B1 (en) 2002-07-24
ATE221154T1 (en) 2002-08-15

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