EP0987365B1 - Dispositif d'étanchéité et procédé pour étanchéifier des zones de pression dans une machine à papier - Google Patents

Dispositif d'étanchéité et procédé pour étanchéifier des zones de pression dans une machine à papier Download PDF

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Publication number
EP0987365B1
EP0987365B1 EP99114588A EP99114588A EP0987365B1 EP 0987365 B1 EP0987365 B1 EP 0987365B1 EP 99114588 A EP99114588 A EP 99114588A EP 99114588 A EP99114588 A EP 99114588A EP 0987365 B1 EP0987365 B1 EP 0987365B1
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EP
European Patent Office
Prior art keywords
clamping
sealing element
sealing
holder
sealing device
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.)
Expired - Lifetime
Application number
EP99114588A
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German (de)
English (en)
Other versions
EP0987365A3 (fr
EP0987365A2 (fr
Inventor
Helmut Heinzmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0987365A2 publication Critical patent/EP0987365A2/fr
Publication of EP0987365A3 publication Critical patent/EP0987365A3/fr
Application granted granted Critical
Publication of EP0987365B1 publication Critical patent/EP0987365B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/906—Seal for article of indefinite length, e.g. strip, sheet

Definitions

  • the invention relates to a sealing device for lateral sealing at least one overpressure adjacent to a moving surface or Vacuum zone in a paper machine with at least one Sealing element, at least in some areas in a receiving area arranged a holder and relative to the moving surface is movable to the holder.
  • the invention further relates to a method for lateral sealing at least one overpressure adjacent to a moving surface or Vacuum zone in a paper machine by means of a sealing device, which comprises at least one sealing element, at least in regions is arranged in a receiving area of a holder and is moved relative to the holder for application to the moving surface.
  • Such sealing devices and methods serve, for example the interior of a suction box, which is under negative pressure, whose side walls are provided with the sealing device, opposite to seal the environment by sealing the rotating elements against the Jacket of a suction roll over which a paper web to be dewatered is guided, pressed in such a way that the sealing element is optimal lies against the jacket and a good sealing effect is achieved.
  • a device known from DE-AS 1 135 745 are legs of a weather strip in a space between walls of one Guide for the weather strip arranged, the thickness of the Each leg is slightly less than the width of the space between the Walls.
  • pneumatic sealing provided in the form of a rubber hose, which is connected to a compressed air source and to the sealing strip to create a seal.
  • DE-AS 1 146 350 are on the inner surface of a roller jacket press-on sealing strips in the body of a Suction chamber loosely guided and inside the suction chamber of pressure chambers and supported outside of ribs.
  • This task is solved by the characteristics of the independent Device claim and in particular in that the receiving area designed as a clamp receptacle and the sealing element via clamping surfaces the clamping receptacle is subjected to a clamping force.
  • At least a clamping surface partially formed by a clamping member.
  • Such a clamping member can be tailored to the respective conditions of use be adjusted. If, for example, with vibrations of the moving Surface, in particular a rotating jacket of a suction or Blowing roller, which affect the position of the sealing element, this can lead to the frictional connection between the holder and the clamping element contributing to the sealing element is elastically deformable be designed, whereby the vibrations transmitted to the sealing element can be caught.
  • the appearance of a so-called “Slip stick” effect "is effectively prevented in this way, so that the sealing element in relation to the vibrations in its set position of the roll shell remains. An excessive contact pressure or Surface pressure between the sealing element and the roll shell is avoided in this way, resulting in less wear of the sealing element has the consequence.
  • the clamping member be made of a material of low elasticity.
  • the object underlying the invention is also by the Features of the independent process claim and in particular thereby solved that the receiving area is designed as a clamp receptacle and the sealing element during its movement relative to the holder and in the created state over clamping surfaces of the clamping receptacle with a Clamping force is applied.
  • the sealing device according to the invention according to Fig. 1a serves to separate two pressure zones P 1 , P 2 , which are adjacent to the inner wall of a casing 20 rotating during operation in the direction of the arrow relative to the sealing device, which is part of a suction roll, not shown, of a paper machine and a moving surface represents in the sense of the invention.
  • the jacket 20 is provided with holes 21 through which moisture can be extracted from a paper web to be dewatered.
  • the sealing device is assigned to a suction box, not shown, in the interior of which there is a pressure P 1 during suction operation which is less than the ambient pressure P 2 .
  • a further sealing device designed according to the invention is provided, which seals the interior of the suction box to the other side.
  • the sealing device comprises a holder 10 which is in one plane perpendicular to the axis of rotation of the suction roll a U-shaped cross section has and is preferably substantially over the entire length of the roller extends.
  • a sealing element 15 which as well formed sealing strip extending approximately over the entire length of the roller is inserted so precisely that side walls 11, 12 of Holder 10, which has a channel-like receiving area 17 for the sealing element Limit 15 laterally, flat on the outer walls of the sealing element 15 concerns.
  • the width of the receiving channel 17 of the holder 10 is dependent on the width of the sealing element 15 and the material properties of the sealing element 15 dimensioned such that the sealing element 15 tight in the Holder 10 is seated and freely movable neither in the axial nor in the radial direction is.
  • the receiving area 17 forms a clamping receptacle for the sealing element 15.
  • the surfaces facing the sealing element 15 the side walls 11, 12 of the holder 10 form clamping surfaces of the Clamping receptacle for a frictional connection between the Sealing element 15 and the holder 10 and the sealing element 15 with a static friction or clamping force.
  • the sealing element 15 comprise two different sections 15a, 15b.
  • One with the Sheath 20 cooperating wear section 15a may differ in terms of the material from a clamping portion 15b with which the Sealing element 15 is clamped in the holder 10, distinguish.
  • the wear section 15a is on one side with a bevel 16 Mistake.
  • a pressure hose 55 is arranged, which is also about extends the entire roll length and is connected to a fluid pressure source 70 is in connection with a fluid reservoir, not shown stands.
  • the flow connection between the fluid pressure source 70 and the pressure hose 55 interrupted become.
  • the pressure hose 55 expands, so that in this way the sealing element 15 is pushed out of the holder 10 against the clamping force exerted by the side walls 11, 12 of the holder 10 on the sealing element 15 and can be applied to the jacket 20.
  • the contact pressure F exerted by the contact pressure hose 55 on the sealing element 15 is indicated by an arrow in FIG. 1a.
  • the sealing element 15 is preferably applied to the jacket 20 in such a way that there is a minimal sealing gap, which is sufficient for a sufficient Tightness ensures.
  • At least one of the Side walls 11, 12 of the holder 10 at least one in the longitudinal direction of the holder 10 extending groove 40 may be formed, in which a sealing element 30 is arranged with a circular cross section, for example is designed as an O-ring.
  • the side of the sealing element 30 facing the sealing element 15 forms part of the clamping surface and thus contributes to frictional engagement Connection between the holder 10 and the sealing element 15 at.
  • the Sealing element 30 can thus be referred to as a clamping member.
  • a movement of the sealing element 30 in the direction of the movement the sealing element 15 is prevented in that in this direction the width of the groove 40 of the dimension of the sealing element 30, d. H. corresponds to the diameter of the sealing element 30.
  • FIG. 2 differs from the embodiment according to FIG. 1a characterized in that the holder 10 is only partially in a receiving channel shown suction box 65 arranged and relative to the suction box 65 is movable, which is indicated by the double arrows.
  • This configuration enables the distance between to be preset the holder 10 and the jacket 20 of the suction roll, so that a comparatively slight increase in pressure in the pressure hose 55 is sufficient, to apply the sealing element 15 to the jacket 20.
  • Another advantage is that the contact pressure hose 55 only needs to change its volume due to the slight pressure increase without having to be stretched in order to bring about the necessary lifting movement of the sealing element 15. As a result, there is a linear relationship between the pressure P F and the contact pressure between the sealing element 15 and the jacket 20 without dependence on the contact path.
  • the suction box 65 as a clamp receptacle in the sense of the invention be designed for the holder 10.
  • the holder 10 of the other described embodiments of the Sealing device according to the invention can for the purpose of a Coarse adjustment can be made adjustable relative to the jacket 20.
  • Fig. 3 serves to explain the acting on the sealing element 15 Forces, where in the diagram the forces over the extension of the Sealing element 15 along the axis of rotation of the suction roll, d. H. across the roll width Bw are applied.
  • Fp denotes the force referred to below as the bending force, which is required in order to adapt the sealing element 15 to the contour of the roll shell 20, which can deviate from a straight line, for example due to the roll deflection. While the bending force F P is shown in FIG. 3a as being approximately constant over the length of the sealing element 15, a deviating course of the bending force F P can occur in practice.
  • the static frictional force acting by clamping the sealing element 15 in the holder 10 between the sealing element 15 and the holder 10 is designated by F R in FIG. 3a, a case being assumed here in which the static frictional force F R is greater than the bending force F P is.
  • the static friction force F R is also referred to below as the clamping force.
  • the pressure P F in the contact pressure hose 55 must be increased to such an extent that the contact force F is greater than the sum F R + F P and is therefore in the hatched area of FIG. 3a.
  • the sealing element 15 After the sealing element 15 has been adapted to the contour of the jacket 20 under the action of a constant high pressure P F, the pressure P F - and thus the contact force F - is brought to a constant low, preferably slightly above, between times t 1 and t 2 Reduced zero value. Since the static friction or clamping force F R is greater than the bending force F P , the sealing element 15 cannot move out of its optimally applied state, ie out of its desired sealing position. This means that only the clamping of the sealing element 15 between the side walls 11, 12 of the holder 10 maintains the state of optimal sealing between the sealing element 15 and the jacket 20.
  • FIG. 3b shows the case F R ⁇ F P in a broken line in which the clamping force F R is not sufficient to hold the sealing element 15 in its position adapted to the contour of the jacket 20.
  • the pressure P F in the contact pressure hose 55 is only reduced at most to such an extent that the contact force F corresponds at least approximately to the difference between the bending force and the clamping force, ie F ⁇ F P - F R.
  • the static friction force F R between the holder 10 and the sealing element 15 is in this case, to a certain extent, supported by the contact pressure F exerted by the pressure hose 55 on the sealing element 15 in order to overcome the bending force F P and to seal the sealing element 15 over the entire length of the suction roll to press their coat 20.
  • the fluid pressure P F in the contact pressure hose 55 is set in such a way that the contact pressure is at least as great as the bending force at all times, ie that F ⁇ F P applies.
  • FIG. 4 shows an embodiment of the sealing device according to the invention, which differs from the embodiments described above an arrangement of one as clamping members 130 Clamping pressure hose 50 and one that can be acted upon by the clamping pressure hose 50 Piston 60 is provided.
  • clamping pressure hoses 50 and the pistons 60 each extend in the axial direction over the entire length of the roller inside the grooves 45, which are formed in the side walls 11, 12 of the holder 10 and for Sealing element 15 are open.
  • the sides of the pistons 60 facing the sealing element 15 each form part of the clamping surface for the sealing element 15 and thus contribute to frictional connection between the holder 10 and the sealing element 15 at.
  • the contact pressure hose 55 provided for applying the sealing element 15 to the jacket 20 of the suction roll and the two clamping pressure hoses 50 are connected to a common pressure circuit in which the pressure can be regulated by means of a fluid pressure source 70 and a valve 75. Consequently, the same fluid pressure P F prevails in the contact pressure hose 55 and in the clamping pressure hoses 50 when the sealing element 15 is applied or pressed onto the moving surface 20.
  • check valves 85 prevent the pressure in the clamping pressure hoses 50 from dropping.
  • the clamping force exerted by the clamping members 130 is consequently retained.
  • Valves 90 serve to release pressure from the clamping pressure hoses 50 and thus to reduce or remove this clamping force.
  • FIG. 4 also shows a pressure regulating or control device 80 which is connected to the pressure circuit in the region of the valve 75 and communicates with the pressure hose 55 and which is used to regulate or control the valve position as a function of the fluid pressure P measured by it in the pressure hose 55 F is formed.
  • a pressure control device 80 can also be provided in the other described embodiments of the sealing device according to the invention.
  • the embodiment according to FIG. 4 allows first of all to work with a comparatively high pressure P F , which is necessary to move the sealing element 15 relative to the holder 10, and - when the desired sealing position of the sealing element 15 is reached - the pressure P. F to reduce. Since a pressure drop in the clamping pressure hoses 50 is prevented by the check valves 85, the clamping force exerted by the clamping members 130 on the sealing element 15 is maintained, so that the sealing element 15 is still held in its sealing position.
  • the pistons 60 can be designed to be elastically deformable and consist of one each produced the desired elasticity material become. A high elasticity of the piston 60 is advantageous when vibrating of the roll shell 20 is to be expected, which on the sealing element 15 are transmitted. Such vibrations can then be caused by the pistons 60 are recorded so that no "slip stick” effect occurs and the sealing element 15 in the optimal sealing position with respect to the Jacket 20 remains.
  • a low elasticity of the pistons 60 is advantageous if none Vibrations of the roll shell 20 are to be expected and the sealing device used on suction rollers with poor concentricity is because in this way the "slip stick" effect desired in such cases is promoted.
  • FIG. 5 differs from the embodiment according to FIG. 4 in that a clamping member 130 comprising a clamping pressure hose 50 and a piston 60 is provided only in one side wall 11 of the holder 10, wherein in the clamping pressure hose 50 during the Applying or pressing the sealing element 15 against the moving surface 20 is the same pressure P F as in the contact pressure hose 55.

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  • Sealing Devices (AREA)
  • Paper (AREA)
  • Package Closures (AREA)

Claims (27)

  1. Dispositif d'étanchéité pour étanchéifier latéralement au moins une zone de surpression ou de dépression (P1, P2) adjacente à une face en mouvement (20) dans une machine à papier comprenant au moins un élément d'étanchéité (15) qui est disposé au moins en partie dans une région de logement (17) d'un support (10) et qui peut être déplacé par rapport au support (10) pour s'appliquer contre la face en mouvement (20),
    caractérisé en ce que
    la région de logement (17) est réalisée sous forme de logement de serrage et l'élément d'étanchéité (15) est sollicité par le biais de faces de serrage du logement de serrage avec une force de serrage (FR) qui est supérieure à une force de flexion (Fp).
  2. Dispositif d'étanchéité selon la revendication 1,
    caractérisé en ce que
    dans au moins un plan perpendiculaire à la direction d'application, l'élément d'étanchéité (15) remplit au moins essentiellement complètement la région de logement (17).
  3. Dispositif d'étanchéité selon la revendication 1 ou 2,
    caractérisé en ce que
    la région de logement est réalisée en tant que canal de logement (17) ouvert vers la face en mouvement (20), qui présente de préférence une face interne libre en section transversale approximativement quadratique ou rectangulaire, des faces latérales délimitant le canal de logement (17) étant réalisées en tant que faces de serrage.
  4. Dispositif d'étanchéité selon au moins l'une quelconque des revendications précédentes,
    caractérisé en ce que
    au moins une face de serrage est formée en partie par un organe de serrage (30 ; 130) qui est disposé de préférence dans une rainure (40 ; 45) qui est réalisée dans une paroi latérale (11, 12) du support (10) et qui est ouverte vers l'élément d'étanchéité (15).
  5. Dispositif d'étanchéité selon la revendication 4,
    caractérisé en ce que
    l'organe de serrage est réalisé en tant qu'élément d'étanchéification (30).
  6. Dispositif d'étanchéité selon la revendication 4 ou 5,
    caractérisé en ce que
    l'organe de serrage (30 ; 130) est déformable élastiquement.
  7. Dispositif d'étanchéité selon au moins l'une quelconque des revendications 4 à 6,
    caractérisé en ce que
    l'organe de serrage (130) comprend un tuyau de pression de serrage (50) disposé notamment entre l'élément d'étanchéité (15) et une paroi latérale (11. 12) délimitant la réaion de logement (17).
  8. Dispositif d'étanchéité selon au moins l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément d'étanchéité (15) peut être appliqué contre la face en mouvement (20) au moyen d'au moins un tuyau de pression de compression (55) qui est disposé notamment entre l'élément d'étanchéité (15) et une face de limitation de la région de logement (17) opposée à la face en mouvement (20).
  9. Dispositif d'étanchéité selon la revendication 7 ou 8,
    caractérisé en ce que
    les pressions régnant dans le tuyau de pression de compression (55) et dans le tuyau de pression de serrage (50) sont approximativement égales au moins au cours de l'application ou de la pression de l'élément d'étanchéité (15) contre la face en mouvement (20).
  10. Dispositif d'étanchéité selon au moins l'une quelconque des revendications 7 à 9,
    caractérisé en ce que
    le tuyau de pression de compression (55) et le tuyau de pression de serrage (50) sont raccordés à un circuit de pression commun.
  11. Dispositif d'étanchéité selon au moins l'une quelconque des revendications 7 à 10,
    caractérisé en ce que
    le tuyau de pression de serrage (50) est disposé dans une rainure (45) réalisée sur la surface de la paroi latérale (11, 12).
  12. Dispositif d'étanchéité selon au moins l'une quelconque des revendications 7 à 11,
    caractérisé en ce que
    l'on dispose entre le tuyau de pression de serrage (50) et l'élément d'étanchéité (15) un piston (60) déplaçable dans la rainure (45).
  13. Dispositif d'étanchéité selon la revendication 12,
    caractérisé en ce que
    le piston (60) est fabriqué en un matériau présentant une faible élasticité.
  14. Dispositif d'étanchéité selon au moins l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément d'étanchéité (15) comprend une portion d'usure (15a) coopérant avec la face en mouvement (20) et une portion de serrage (15b) coopérant avec le support (10), la portion d'usure (15a) et la portion de serrage (15b) étant fabriquées à partir de matériaux différents.
  15. Dispositif d'étanchéité selon au moins l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le support (10) peut être déplacé par rapport à la face en mouvement (20) avec une composante parallèle à la direction d'application.
  16. Dispositif d'étanchéité selon au moins l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le support (10) est monté de manière déplaçable, notamment de manière élastique, sur une caisse aspirante ou soufflante (65).
  17. Dispositif d'étanchéité selon au moins l'une quelconque des revendications précédentes, pour l'étanchéification latérale d'au moins une zone de pression (P1, P2) adjacente à la paroi intérieure ou extérieure d'une enveloppe en rotation (20) d'un cylindre aspirant ou soufflant ou à une bande en mouvement.
  18. Dispositif d'étanchéité selon au moins l'une quelconque des revendications précédentes pour l'utilisation entre une caisse aspirante ou soufflante (65) et l'enveloppe en rotation (20) d'un cylindre aspirant ou soufflant ou une bande en mouvement.
  19. Dispositif d'étanchéité selon au moins l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément d'étanchéité (15) est réalisé sous forme de nervure d'étanchéité s'étendant au moins essentiellement sur toute la longueur du cylindre.
  20. Dispositif d'étanchéité selon le préambule de la revendication 1,
    caractérisé en ce que
    l'élément d'étanchéité (15) est sollicité par le biais de faces de serrage du support (10) avec une force de serrage (FR), au moins une face de serrage étant formée au moins en partie par un organe de serrage (130) qui est disposé de préférence dans une rainure (45) réalisée dans une paroi latérale (11, 12) du support (10) et ouverte vers l'élément d'étanchéité (15), et qui comprend un tuyau de pression de serrage (50) disposé notamment entre l'élément d'étanchéité (15) et une paroi latérale (11, 12) délimitant la région de logement (17), l'élément d'étanchéité (15) pouvant s'appliquer contre la face en mouvement (20) au moyen d'au moins un tuyau de pression de compression (55) qui est disposé notamment entre l'élément d'étanchéité (15) et une face de limitation de la région de logement (17) opposée à la face en mouvement (20), et où les pressions régnant dans le tuyau de pression de compression (55) et dans le tuyau de pression de serrage (50) sont approximativement égales au moins au cours de l'application ou de la compression de l'élément d'étanchéité (15) contre la face en mouvement (20), et où notamment le tuyau de pression de compression (55) et le tuyau de pression de serrage (50) sont raccordés à un circuit de pression commun.
  21. Procédé pour l'étanchéification latérale d'au moins une zone de surpression ou de dépression (P1, P2) adjacente à une face en mouvement (20) dans une machine à papier au moyen d'un dispositif d'étanchéité qui comprend au moins un élément d'étanchéité (15) qui est disposé dans une région de logement (17) d'un support (10) et qui est déplacé par rapport au support (10) pour s'appliquer contre la face en mouvement (20),
    caractérisé en ce que
    la région de logement (17) est réalisée en tant que logement de serrage et l'élément d'étanchéité (15) est sollicité au cours de son déplacement par rapport au support (10) et dans l'état appliqué par le biais des faces de serrage du logement de serrage avec une force de serrage (FR), qui est supérieure à une force de flexion (Fp).
  22. Procédé selon la revendication 21,
    caractérisé en ce que
    l'élément d'étanchéité (15) est serré avec une force de serrage (FR) au moins essentiellement constante dans le temps.
  23. Procédé selon la revendication 21,
    caractérisé en ce que
    la force de serrage (FR) est variée en fonction de la distance de l'élément d'étanchéité (15) de la face en mouvement (20) et/ou en fonction d'une force de compression (F) avec laquelle l'élément d'étanchéité (15) est sollicité pour s'appliquer contre la face en mouvement (20).
  24. Procédé selon au moins l'une quelconque des revendications 21 à 23,
    caractérisé en ce qu'
    une force de compression (F), après que l'élément d'étanchéité (15) a été appliqué contre la face en mouvement (20), est ajustée en fonction du rapport entre la force de serrage (FR) et une force de flexion (Fp) nécessaire pour l'adaptation de l'élément d'étanchéité (15) au contour de la face en mouvement (20).
  25. Procédé selon au moins l'une quelconque des revendications 21 à 24,
    caractérisé en ce qu'
    une force de compression (F) est réduite après que l'élément d'étanchéité (15) a été appliqué contre la face en mouvement (20).
  26. Procédé selon au moins l'une quelconque des revendications 21 à 25,
    caractérisé en ce qu'
    une force de compression (F) est réduite notamment pratiquement à zéro après que l'élément d'étanchéité (15) a été appliqué contre la face en mouvement (20), notamment a été appliqué au contour de la face en mouvement (20).
  27. Procédé selon au moins l'une quelconque des revendications 21 à 26,
    caractérisé en ce qu'
    un dispositif d'étanchéité ayant les caractéristiques d'au moins l'une des revendications 1 à 20 est utilisé.
EP99114588A 1998-09-18 1999-07-26 Dispositif d'étanchéité et procédé pour étanchéifier des zones de pression dans une machine à papier Expired - Lifetime EP0987365B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19842838A DE19842838A1 (de) 1998-09-18 1998-09-18 Dichtungseinrichtung und Verfahren zur Abdichtung von Druckzonen in einer Papiermaschine
DE19842838 1998-09-18

Publications (3)

Publication Number Publication Date
EP0987365A2 EP0987365A2 (fr) 2000-03-22
EP0987365A3 EP0987365A3 (fr) 2000-07-19
EP0987365B1 true EP0987365B1 (fr) 2004-06-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114588A Expired - Lifetime EP0987365B1 (fr) 1998-09-18 1999-07-26 Dispositif d'étanchéité et procédé pour étanchéifier des zones de pression dans une machine à papier

Country Status (3)

Country Link
US (2) US6334934B1 (fr)
EP (1) EP0987365B1 (fr)
DE (2) DE19842838A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE517932C2 (sv) * 2001-09-19 2002-08-06 Kvaerner Pulping Tech Tätningsordning för trumfilter eller filterpressar samt manschett och hållarelement till en sådan
ES2284808T3 (es) * 2002-10-31 2007-11-16 M T C - Macchine Trasformazione Carta S.R.L. Metodo para activar los orificios de aspiracion de rodillos para maquinas de conversion de papel y rodillos para llevar a cabo este metodo.
DE10257015A1 (de) * 2002-12-06 2004-06-17 Voith Paper Patent Gmbh Saug- oder Blaswalze
DE102004017827A1 (de) * 2004-04-13 2005-11-03 Voith Paper Patent Gmbh Dichtungsanordnung, insbesondere für eine Trockenanordnung
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DE59909733D1 (de) 2004-07-22
DE19842838A1 (de) 2000-03-23
EP0987365A3 (fr) 2000-07-19
US6551460B2 (en) 2003-04-22
US6334934B1 (en) 2002-01-01
US20020060030A1 (en) 2002-05-23
EP0987365A2 (fr) 2000-03-22

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