WO1999004212A1 - Rotary cylinder serving as a heat exchanger - Google Patents

Rotary cylinder serving as a heat exchanger Download PDF

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Publication number
WO1999004212A1
WO1999004212A1 PCT/EP1998/004251 EP9804251W WO9904212A1 WO 1999004212 A1 WO1999004212 A1 WO 1999004212A1 EP 9804251 W EP9804251 W EP 9804251W WO 9904212 A1 WO9904212 A1 WO 9904212A1
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WO
WIPO (PCT)
Prior art keywords
jacket
inner part
cylinder
ring
rotary cylinder
Prior art date
Application number
PCT/EP1998/004251
Other languages
German (de)
French (fr)
Inventor
Wilhelm Jumpertz
Günther KIND
Original Assignee
Sig Combibloc 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 Sig Combibloc Gmbh filed Critical Sig Combibloc Gmbh
Priority to AU90642/98A priority Critical patent/AU9064298A/en
Publication of WO1999004212A1 publication Critical patent/WO1999004212A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal
    • 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
    • D21F5/021—Construction of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers

Definitions

  • the invention relates to a rotary cylinder serving as a heat exchanger with a jacket, an inner part and an annular space defined between the jacket and the inner part for the passage of a tempering medium, the annular space being sealed in the area of the cylinder ends and the jacket in the area of the cylinder ends each interacting with a sealing ring , a cone ring, a clamping ring and at least one clamping screw having clamping device against the inner part is clamped.
  • Such a rotary cylinder is known for example from DE 32 13 512 Cl.
  • Tempering cylinders designed as cooling cylinders are used in particular in the production of
  • Packaging materials are used to cool and thus solidify plastic plastic coatings applied to cardboard webs or the like.
  • the undesired expansion is not only harmful for the cylinders, but also has disadvantages for the quality of the cardboard / plastic composite material webs produced on such cylinders, since the expansion of the cooling cylinders at their outer ends results in a different thickness of the PE layer.
  • the object of the invention is therefore to design and refine the rotary cylinder mentioned at the beginning and described in more detail above in such a way that widening of the edge regions of the cylinder jacket can be reliably prevented in order to avoid the aforementioned problems.
  • annular border is provided on each of the two cylinder ends, which encompasses the jacket in the region of the tensioning device and the inner part in a form-fitting manner on the respective cylinder end and essentially free of play.
  • the clamping and sealing system of the generic rotary cylinder is considerably improved by the annular border according to the invention.
  • An axial relative movement between the jacket and the inner part of the rotary cylinder can now be reliably ruled out during operation.
  • the invention also ensures a higher concentricity of the jacket.
  • An advantageous embodiment of the rotary cylinder according to the invention is that the conical ring is supported on the inside of the casing and the bezel, the tensioning screw or tensioning screws of the tensioning device being guided through an opening formed in the bezel and being clampable against the bezel.
  • This makes it possible to add an additional one between the sealing ring and the clamping ring Arrange seal, which preferably consists of a flat rubber ring with one or more spacers fitted therein. In this way, an absolute tightness of the annular space at the ends of the rotary cylinder is guaranteed.
  • Another advantageous embodiment consists in that the border can be fastened to the inner part by means of a screw connection. This ensures optimum protection against relative migration of the jacket relative to the inner part.
  • the single figure of the drawing shows part of a cooling cylinder according to the invention in axial section.
  • the cooling cylinder shown in the drawing has an outer jacket 1, an inner part 3 and an annular space 2 defined between the jacket and the inner part.
  • the inner part 3 of the cooling cylinder is formed from a cylindrical inner jacket 4 and substantially circular disk-shaped end walls 5 which are welded to the inner jacket 4.
  • the end walls 5 are connected to a shaft 6.
  • a sealing ring 10 is arranged in the annular space 2, which has been expanded in this way and has an annular groove 11 or 12 with an O-ring 13 or 14 on its outer circumference and in its bore. Furthermore, in the annular space 2 in A conical ring 15 and a clamping ring 16 are arranged in the region of the cylinder ends.
  • the cone ring 15 with its outside on the inside of the outer casing 1 has on the inside a cone surface 17 against which the clamping ring 16 bears with a likewise conical outer clamping surface 18.
  • the clamping ring 16 lies with its inside on the stepped peripheral surface 7 of the end wall 5, which is provided with an annular recess 19.
  • a border 20 is provided on each of the two cylinder ends, which encompasses the outer jacket 1 in the area of the tensioning device and the respective end wall 5 in the area of the recess 19, which is designed as a cylindrical recess in the illustrated and, in this respect, preferred embodiment, essentially without play .
  • the bezel 20 which acts like a corset, one or more threaded bores 21 are provided in the end wall 5 of the inner part 3, into each of which a screw 22 is screwed, which is inserted into a bore 23 with a graduated inner diameter.
  • the section 24 of the annular casing 20 which lies against the outside of the outer casing 1 is relatively wide and completely covers both the conical ring 15 and the clamping ring 16, while the section 25 which lies in the region of the recess 19 of the end wall 5 is the Border 20 is relatively narrow, but has a larger wall thickness.
  • a plurality of clamping screws 26 are provided, which are distributed uniformly over the circumference of the cooling cylinder and are each screwed into an associated threaded bore 27 formed in the sealing ring 10.
  • the tensioning screws 26 are also screws which are supported in a form-fitting manner in bores 28 with a stepped inner diameter in the annular casing 20.
  • spacer bushes 30 are arranged which, when the clamping screws 26 are tightened, transmit the movement of the sealing ring 10 in the direction of the casing 20 onto the clamping ring 16, so that this, due to its conical clamping surface 18, expands the cone ring 15 supported on the inside of the outer casing 1 and the casing 20 radially outward and thereby braces the outer casing 1 against the inner part 3.
  • the spacers 30 are fitted in a sealing ring 31 which bears sealingly on the inside of the outer casing 1 and on the outside of the inner part 3.
  • the surround 20 according to the present invention is also particularly suitable for retrofitting existing cooling cylinders.

Abstract

The invention relates to a rotary cylinder which also serves as a heat exchanger. Said rotary cylinder has a jacket (1), an inner part (3) and an annular chamber (2) for channelling a cooling or heat transfer medium, said annular chamber being defined between said jacket and said inner part. The annular chamber (2) is sealed in the area of each cylinder end and the jacket (1) can be clamped in relation to the inner part (3) in the area of the cylinder ends by means of a clamping device. Said clamping device interacts with a sealing ring (10) and has a conical ring (15), a clamping ring (16) and at least one clamping screw (26). According to the invention, an annular rim (20) is provided at each of the cylinder ends as a reliable means of preventing the edge areas of the cylinder jacket (1) from expanding in a rotary cylinder of this type. Said annular rim (20) encompasses the jacket (1) in the area of the clamping device, and the inner part (3) in a recess (19) configured at each cylinder end, with essentially no clearance and with a positive fit.

Description

Als Wärmetauscher dienender Drehzylinder Rotary cylinder serving as heat exchanger
Die Erfindung betrifft einen als Wärmetauscher dienenden Drehzylinder mit einem Mantel, einem Innenteil und einem zwischen Mantel und Innenteil definierten Ringraum zum Durchleiten eines Temperiermediums, wobei der Ringraum im Bereich der Zylinderenden abgedichtet ist und der Mantel im Bereich der Zylinderenden jeweils über eine mit einem Dichtring zusammenwirkende, einen Konusring, einen Spannring und mindestens eine Spannschraube aufweisende Spannvorrichtung gegen das Innenteil verspannbar ist.The invention relates to a rotary cylinder serving as a heat exchanger with a jacket, an inner part and an annular space defined between the jacket and the inner part for the passage of a tempering medium, the annular space being sealed in the area of the cylinder ends and the jacket in the area of the cylinder ends each interacting with a sealing ring , a cone ring, a clamping ring and at least one clamping screw having clamping device against the inner part is clamped.
Ein derartiger Drehzylinder ist beispielsweise aus der DE 32 13 512 Cl bekannt.Such a rotary cylinder is known for example from DE 32 13 512 Cl.
Als Kühlzylinder ausgebildete Temperierzylinder werden insbesondere bei der Herstellung vonTempering cylinders designed as cooling cylinders are used in particular in the production of
Verpackungsmaterialien verwendet, um auf Kartonbahnen oder dergleichen aufgetragene plastische Kunststoffbeschichtungen abzukühlen und damit zu verfestigen.Packaging materials are used to cool and thus solidify plastic plastic coatings applied to cardboard webs or the like.
Der Mantel solcher bekannter Kühlzylinder wird vielfach aus Stahl hergestellt, wobei die Oberfläche oft verchromt ist. In zunehmendem Maße werden jedoch auch Mäntel aus Leichtmetall, insbesondere aus Aluminium verwendet, um dessen gute Wärmeleitfähigkeit auszunutzen. Gleichzeitig bemüht man sich auch aus Gründen der Material- und Gewichtseinsparung, die Wandstärke des Zylindermantels zu reduzieren. Dabei besteht jedoch das Problem, daß die beim Spannen der Spannvorrichtung in radialer Richtung wirkenden Kräfte die Verformungsfestigkeit der dünnen Mantelwand mitunter übersteigen, so daß es im Bereich der Spannvorrichtung häufig zu einer Aufweitung des Zy1indermanteis kommt .The casing of such known cooling cylinders is often made of steel, and the surface is often chrome-plated. However, shells made of light metal, in particular aluminum, are also being used to an increasing extent take advantage of its good thermal conductivity. At the same time, efforts are also made to reduce the wall thickness of the cylinder jacket in order to save material and weight. However, there is the problem that the forces acting in the radial direction when tensioning the tensioning device sometimes exceed the deformation resistance of the thin jacket wall, so that there is often an expansion of the cylinder in the area of the tensioning device.
Eine solche AufWeitung kann jedoch die Funktion von Anlagen mit derartigen Kühlzylindern erheblich beeinträchtigen, da die Gefahr besteht, daß sich das Spannsystem des Kühlzylinders löst und sich der Mantel gegenüber dem Innenteil axial verschiebt. Auch kann die Aufweitung des Zylindermantels häufig eine Leckage und somit einen Kühlwasserverlust zur Folge haben. Darüber hinaus kann bei der Aufweitung verchromter Kühlzylinder eine Rißbildung in der Verchromung mit nachfolgender Unterkorrosion und ein Abplatzen der Chromschicht auftreten. Im übrigen lassen sich die Mäntel der Kühlzylinder bedingt durch das Aufweiten meist nur auf Rundlaufgenauigkeiten > 0,3 mm montieren.However, such expansion can significantly impair the function of systems with such cooling cylinders, since there is a risk that the clamping system of the cooling cylinder will come loose and the jacket will move axially relative to the inner part. The expansion of the cylinder jacket can also often result in leakage and thus loss of cooling water. In addition, when chrome-plated cooling cylinders are expanded, cracking in the chrome-plating with subsequent under-corrosion and chipping of the chrome layer can occur. In addition, the jackets of the cooling cylinders can usually only be fitted to concentricity> 0.3 mm due to the expansion.
Die unerwünschte Aufweitung ist jedoch nicht nur für die Zylinder schädlich, sondern birgt auch Nachteile für die Qualität der auf solchen Zylindern hergestellten Karton/Kunststoff- Verbundmaterialbahnen, da die Aufweitung der Kühlzylinder an ihren äußeren Enden eine unterschiedliche Dicke der PE-Schicht zu Folge hat. Aufgabe der Erfindung ist es daher, den eingangs genannten und zuvor näher beschriebenen Drehzylinder so auszugestalten und weiterzubilden, daß eine Aufweitung der Randbereiche des Zylindermantels zuverlässig verhindern werden kann, um die vorgenannten Probleme zu vermeiden.The undesired expansion is not only harmful for the cylinders, but also has disadvantages for the quality of the cardboard / plastic composite material webs produced on such cylinders, since the expansion of the cooling cylinders at their outer ends results in a different thickness of the PE layer. The object of the invention is therefore to design and refine the rotary cylinder mentioned at the beginning and described in more detail above in such a way that widening of the edge regions of the cylinder jacket can be reliably prevented in order to avoid the aforementioned problems.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß an jedem der beiden Zylinderenden eine ringförmige Einfassung vorgesehen ist, die den Mantel im Bereich der Spannvorrichtung und das Innenteil an einer an dem jeweiligen Zylinderende ausgebildeten Ausnehmung formschlüssig und im wesentlichen spielfrei umfaßt.This object is achieved in that an annular border is provided on each of the two cylinder ends, which encompasses the jacket in the region of the tensioning device and the inner part in a form-fitting manner on the respective cylinder end and essentially free of play.
Durch die erfindungsgemäße ringförmige Einfassung wird das Spann- und Dichtungssystem gattungsgemäßer Drehzylinder erheblich verbessert. Eine axiale Relativbewegung zwischen Mantel und Innenteil des Drehzylinders kann nunmehr während des Betriebs sicher ausgeschlossen werden. Ebenso gewährleistet die Erfindung auch eine höhere Rundlaufgenauigkeit des Mantels.The clamping and sealing system of the generic rotary cylinder is considerably improved by the annular border according to the invention. An axial relative movement between the jacket and the inner part of the rotary cylinder can now be reliably ruled out during operation. The invention also ensures a higher concentricity of the jacket.
Eine vorteilhafte Ausgestaltung des erfindungsgemäßen Drehzylinders besteht darin, daß der Konusring an der Innenseite des Mantels und der Einfassung abgestützt ist, wobei die Spannschraube bzw. Spannschrauben der Spannvorrichtung durch jeweils eine in der Einfassung ausgebildete Öffnung hindurchgeführt und gegen die Einfassung verspannbar sind. Hierdurch ist es möglich, zwischen dem Dichtring und dem Spannring eine zusätzliche Dichtung anzuordnen, die vorzugsweise aus einem Flachgummiring mit einer oder mehreren darin eingepaßten Distanzbuchsen besteht. Auf diese Weise wird eine absolute Dichtigkeit des Ringraumes an den Enden des Drehzylinders gewährleistet.An advantageous embodiment of the rotary cylinder according to the invention is that the conical ring is supported on the inside of the casing and the bezel, the tensioning screw or tensioning screws of the tensioning device being guided through an opening formed in the bezel and being clampable against the bezel. This makes it possible to add an additional one between the sealing ring and the clamping ring Arrange seal, which preferably consists of a flat rubber ring with one or more spacers fitted therein. In this way, an absolute tightness of the annular space at the ends of the rotary cylinder is guaranteed.
Eine weitere vorteilhafte Ausgestaltung besteht darin, daß die Einfassung mittels einer Schraubverbindung an dem Innenteil befestigbar ist. Hierdurch wird eine optimale Sicherung gegen ein relatives Wandern des Mantels gegenüber dem Innenteil erzielt.Another advantageous embodiment consists in that the border can be fastened to the inner part by means of a screw connection. This ensures optimum protection against relative migration of the jacket relative to the inner part.
Im folgenden wird die Erfindung anhand einer lediglich ein bevorzugtes Ausführungsbeispiel darstellenden Zeichnung näher erläutert .The invention is explained in more detail below with reference to a drawing which represents only one preferred exemplary embodiment.
Die einzige Figur der Zeichnung zeigt einen Teil eines erfindungsgemäßen Kühlzylinders im Axialschnitt. Der in der Zeichnung dargestellte Kühlzylinder weist einen äußeren Mantel 1, ein Innenteil 3 und einen zwischen Mantel und Innenteil definierten Ringraum 2 auf. Das Innenteil 3 des Kühlzylinders ist aus einem zylindrischen Innenmantel 4 und im wesentlichen kreisscheibenförmigen Stirnwänden 5 gebildet, die mit dem Innenmantel 4 verschweißt sind. Die Stirnwände 5 sind mit einer Welle 6 verbunden.The single figure of the drawing shows part of a cooling cylinder according to the invention in axial section. The cooling cylinder shown in the drawing has an outer jacket 1, an inner part 3 and an annular space 2 defined between the jacket and the inner part. The inner part 3 of the cooling cylinder is formed from a cylindrical inner jacket 4 and substantially circular disk-shaped end walls 5 which are welded to the inner jacket 4. The end walls 5 are connected to a shaft 6.
In dem so erweiterten Ringraum 2 ist ein Dichtring 10 angeordnet, der an seinem Außenumfang und in seiner Bohrung jeweils eine Ringnut 11 bzw. 12 mit einem O-Ring 13 bzw. 14 aufweist. Ferner sind in dem Ringraum 2 im Bereich der Zylinderenden jeweils ein Konusring 15 und ein Spannring 16 angeordnet. Der mit seiner Außenseite an der Innenseite des Außenmantels 1 anliegende Konusring 15 weist innenseitig eine Konusfläche 17 auf, an der der Spannring 16 mit einer ebenfalls konusförmigen äußeren Spannfläche 18 anliegt. Der Spannring 16 liegt mit seiner Innenseite an der abgestuften Umfangsflache 7 der Stirnwand 5 an, die mit einer ringförmigen Ausnehmung 19 versehen ist.A sealing ring 10 is arranged in the annular space 2, which has been expanded in this way and has an annular groove 11 or 12 with an O-ring 13 or 14 on its outer circumference and in its bore. Furthermore, in the annular space 2 in A conical ring 15 and a clamping ring 16 are arranged in the region of the cylinder ends. The cone ring 15 with its outside on the inside of the outer casing 1 has on the inside a cone surface 17 against which the clamping ring 16 bears with a likewise conical outer clamping surface 18. The clamping ring 16 lies with its inside on the stepped peripheral surface 7 of the end wall 5, which is provided with an annular recess 19.
Erfindungsgemäß ist an jedem der beiden Zylinderenden eine Einfassung 20 vorgesehen, die den Außenmantel 1 im Bereich der Spannvorrichtung und die jeweilige Stirnwand 5 im Bereich der Ausnehmung 19, welche im dargestellten und insoweit bevorzugten Ausführungsbeispiel als zylindrische Vertiefung ausgebildet ist, formschlüssig und im wesentlichen spielfrei umfaßt. Zur Befestigung der wie ein Korsett wirkenden Einfassung 20 sind in der Stirnwand 5 des Innenteils 3 eine oder mehrere Gewindebohrungen 21 vorgesehen, in die jeweils eine Schraube 22 eingedreht ist, welche in eine Bohrung 23 mit abgestuftem Innendurchmesser eingesetzt ist.According to the invention, a border 20 is provided on each of the two cylinder ends, which encompasses the outer jacket 1 in the area of the tensioning device and the respective end wall 5 in the area of the recess 19, which is designed as a cylindrical recess in the illustrated and, in this respect, preferred embodiment, essentially without play . To fasten the bezel 20, which acts like a corset, one or more threaded bores 21 are provided in the end wall 5 of the inner part 3, into each of which a screw 22 is screwed, which is inserted into a bore 23 with a graduated inner diameter.
Es ist zu erkennen, daß der an der Außenseite des Außenmantels 1 anliegende Abschnitt 24 der ringförmigen Einfassung 20 relativ breit ist und sowohl den Konusring 15 als auch den Spannring 16 vollständig überdeckt, während der im Bereich der Ausnehmung 19 der Stirnwand 5 anliegende Abschnitt 25 der Einfassung 20 relativ schmal ist, jedoch eine größere Wandstärke aufweist. Zur Verspannung des Außenmantels 1 gegen das Innenteil 3 sind mehrere gleichmäßig über den Umfang des Kühlzylinders verteilt angeordnete Spannschrauben 26 vorgesehen, die jeweils in eine zugeordnete, in dem Dichtring 10 ausgebildete Gewindebohrung 27 geschraubt werden. Die Spannschrauben 26 sind ebenfalls Schrauben, die in Bohrungen 28 mit abgestuftem Innendurchmesser in der ringförmigen Einfassung 20 formschlüssig abgestützt sind. Zwischen dem Dichtring 10 und dem Spannring 16, der zur Hindurchführung der Spannschrauben 26 mit mehreren Durchgangsöffnungen versehen ist, sind Distanzbuchsen 30 angeordnet, die beim Anziehen der Spannschrauben 26 die in Richtung der Einfassung 20 gerichtete Bewegung des Dichtrings 10 auf den Spannring 16 übertragen, so daß dieser aufgrund seiner konischen Spannfläche 18 den an der Innenseite des Außenmantels 1 und der Einfassung 20 abgestützten Konusring 15 radial nach außen aufweitet und dadurch den Außenmantel 1 gegen das Innenteil 3 verspannt. Die Distanzbuchsen 30 sind dabei in einem Dichtring 31 eingepaßt, der an der Innenseite des Außenmantels 1 sowie an der Außenseite des Innenteils 3, dichtend anliegt.It can be seen that the section 24 of the annular casing 20 which lies against the outside of the outer casing 1 is relatively wide and completely covers both the conical ring 15 and the clamping ring 16, while the section 25 which lies in the region of the recess 19 of the end wall 5 is the Border 20 is relatively narrow, but has a larger wall thickness. To brace the outer casing 1 against the inner part 3, a plurality of clamping screws 26 are provided, which are distributed uniformly over the circumference of the cooling cylinder and are each screwed into an associated threaded bore 27 formed in the sealing ring 10. The tensioning screws 26 are also screws which are supported in a form-fitting manner in bores 28 with a stepped inner diameter in the annular casing 20. Between the sealing ring 10 and the clamping ring 16, which is provided for the passage of the clamping screws 26 with a plurality of through openings, spacer bushes 30 are arranged which, when the clamping screws 26 are tightened, transmit the movement of the sealing ring 10 in the direction of the casing 20 onto the clamping ring 16, so that this, due to its conical clamping surface 18, expands the cone ring 15 supported on the inside of the outer casing 1 and the casing 20 radially outward and thereby braces the outer casing 1 against the inner part 3. The spacers 30 are fitted in a sealing ring 31 which bears sealingly on the inside of the outer casing 1 and on the outside of the inner part 3.
Die Einfassung 20 gemäß vorliegender Erfindung eignet sich insbesondere auch für die Nachrüstung vorhandener Kühlzylinder. The surround 20 according to the present invention is also particularly suitable for retrofitting existing cooling cylinders.

Claims

Patentansprüche: Claims:
1. Als Wärmetauscher dienender Drehzylinder mit einem Mantel (1) , einem Innenteil (3) und einem zwischen Mantel und Innenteil definierten Ringraum (2) zum Durchleiten eines Temperiermediums, wobei der Ringraum (2) im Bereich der Zylinderenden abgedichtet ist und der Mantel (1) im Bereich der Zylinderenden jeweils über eine mit einem Dichtring (10) zusammenwirkende, einen Konusring (15) , einen Spannring (16) und mindestens eine Spannschraube1. Rotary cylinder serving as a heat exchanger with a jacket (1), an inner part (3) and an annular space (2) defined between the jacket and inner part for passing a tempering medium, the annular space (2) being sealed in the area of the cylinder ends and the jacket ( 1) in the area of the cylinder ends via a conical ring (15), a clamping ring (16) and at least one clamping screw which cooperates with a sealing ring (10)
(26) aufweisende Spannvorrichtung gegen das Innenteil (3) verspannbar ist, d a d u r c h g e k e n n z e i c h n e t, daß an jedem der beiden Zylinderenden eine ringförmige Einfassung (20) vorgesehen ist, die den Mantel (1) im Bereich der Spannvorrichtung und das Innenteil (3) an einer an dem jeweiligen Zylinderende ausgebildeten Ausnehmung (19) formschlüssig und im wesentlichen spielfrei umfaßt.(26) having clamping device can be clamped against the inner part (3), characterized in that an annular border (20) is provided on each of the two cylinder ends, which surrounds the jacket (1) in the area of the clamping device and the inner part (3) the recess (19) formed in each cylinder end is positively and essentially free of play.
2. Drehzylinder nach Anspruch 1 , d a d u r c h g e k e n n z e i c h n e t, daß zwischen dem Dichtring (10) und dem Spannring (16) ein zusätzlicher Dichtring (31) angeordnet ist.2. Rotary cylinder according to claim 1, d a d u r c h g e k e n n z e i c h n e t that an additional sealing ring (31) is arranged between the sealing ring (10) and the clamping ring (16).
3. Drehzylinder nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t, daß der zusätzliche Dichtring (31) aus einem Flachgummiring mit einer oder mehreren darin eingepaßten Distanzbuchsen (30) besteht . 3. Rotary cylinder according to claim 2, characterized in that the additional sealing ring (31) consists of a flat rubber ring with one or more spacer sleeves (30) fitted therein.
4. Drehzylinder nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t, daß der Konusring (15) an der Innenseite des Mantels (1) und der inneren Stirnseite der Einfassung (20) abgestützt ist, wobei die Spannvorrichtung (10,15,16) durch in der Einfassung (20) ausgebildete Öffnungen (28) hindurchgeführten Spannschrauben (26) verspannbar ist.4. Rotary cylinder according to one of claims 1 to 3, characterized in that the conical ring (15) on the inside of the casing (1) and the inner end face of the casing (20) is supported, with the clamping device (10, 15, 16) openings (28) formed in the enclosure (20) and tensioning screws (26) passed through can be clamped.
5. Drehzylinder nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t, daß die Einfassung (20) mittels einer Schraubverbindung (21, 22) an dem Innenteil (3) befestigbar ist. 5. Rotary cylinder according to one of claims 1 to 4, that the casing (20) can be fastened to the inner part (3) by means of a screw connection (21, 22).
PCT/EP1998/004251 1997-07-19 1998-07-08 Rotary cylinder serving as a heat exchanger WO1999004212A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU90642/98A AU9064298A (en) 1997-07-19 1998-07-08 Rotary cylinder serving as a heat exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19731057.5 1997-07-19
DE1997131057 DE19731057C1 (en) 1997-07-19 1997-07-19 Rotating cylinder heat exchanger

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WO1999004212A1 true WO1999004212A1 (en) 1999-01-28

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DE (1) DE19731057C1 (en)
WO (1) WO1999004212A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918454A1 (en) * 2006-10-30 2008-05-07 Voith Patent GmbH Heatable cylinder and drying arrangement

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Publication number Priority date Publication date Assignee Title
DE3040359A1 (en) * 1980-10-25 1982-05-27 Eberhard 4150 Krefeld Derichs ROLLER THAT WORKS AS A HEAT EXCHANGER
WO1982003414A1 (en) * 1981-04-01 1982-10-14 Jarreby Bertil Heating roller
DE3213512C1 (en) 1982-04-10 1983-12-29 Eberhard 4150 Krefeld Derichs Roller serving as a heat exchanger
US4730374A (en) * 1985-05-24 1988-03-15 Schwabische Huttenwerke Heatable glazing or calendering roll

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040359A1 (en) * 1980-10-25 1982-05-27 Eberhard 4150 Krefeld Derichs ROLLER THAT WORKS AS A HEAT EXCHANGER
WO1982003414A1 (en) * 1981-04-01 1982-10-14 Jarreby Bertil Heating roller
DE3213512C1 (en) 1982-04-10 1983-12-29 Eberhard 4150 Krefeld Derichs Roller serving as a heat exchanger
US4730374A (en) * 1985-05-24 1988-03-15 Schwabische Huttenwerke Heatable glazing or calendering roll

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918454A1 (en) * 2006-10-30 2008-05-07 Voith Patent GmbH Heatable cylinder and drying arrangement

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AU9064298A (en) 1999-02-10

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