EP0943729A2 - Dispositif d' étanchéité - Google Patents

Dispositif d' étanchéité Download PDF

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Publication number
EP0943729A2
EP0943729A2 EP98124724A EP98124724A EP0943729A2 EP 0943729 A2 EP0943729 A2 EP 0943729A2 EP 98124724 A EP98124724 A EP 98124724A EP 98124724 A EP98124724 A EP 98124724A EP 0943729 A2 EP0943729 A2 EP 0943729A2
Authority
EP
European Patent Office
Prior art keywords
sealing
moving surface
sealing device
loading
restoring
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
EP98124724A
Other languages
German (de)
English (en)
Other versions
EP0943729A3 (fr
EP0943729B1 (fr
Inventor
Hans Prinzing
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
Voith Sulzer Papiertechnik 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, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0943729A2 publication Critical patent/EP0943729A2/fr
Publication of EP0943729A3 publication Critical patent/EP0943729A3/fr
Application granted granted Critical
Publication of EP0943729B1 publication Critical patent/EP0943729B1/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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/483—Drainage foils and bars

Definitions

  • the invention relates to a sealing device for lateral sealing at least one overpressure or adjacent to a moving surface Vacuum zone in a paper machine, with at least one of the Moving surface opposite sealing element, one associated with this Holder in which the sealing element moved towards the Surface to and from this is mounted movably, and at least a loading element through which the sealing element in the direction of the moving surface is too resilient.
  • Such sealing devices are found in practice both in the former as well as in the press section and / or the dryer section respective paper machine, whereby they include in suction rolls or Blow rollers can be used. So usually have suction rolls fixed inner suction boxes, the zones with at least two Form pressure levels, with the sealing of the pressure zones by sealing strips takes place, which is usually at least essentially on the extend the entire length of the roller.
  • a sealing device known from US-A-5 580 424 is a respective sealing strip by at least an air hose pressed radially against a suction roll jacket. After this the sealing strip in this way applied to the suction roll jacket the resulting strip position is replaced by a side Pressing the sealing strip fixed to a bearing block, whereupon the radial Contact force is reduced to zero.
  • Such an execution now brings but with the disadvantage that due to the frictional fixation the required position of the sealing strip with the required Accuracy can be maintained. Rather, there is a risk that the position of the sealing strip changes due to vibrations and consequently, a gap between the sealing strip and the suction roll jacket undefined width arises, which may be relatively large Air leakage between the pressure chambers in question.
  • the aim of the invention is to provide a sealing device of the type mentioned Way of creating both the wear of the sealing element reduced to a minimum as well as as precisely defined as possible Sealing gap between the sealing element and the moving surface adjustable is.
  • the prevailing relatively high noise level be reduced.
  • the object is achieved according to the invention in that at least additionally a restoring element is provided through which the sealing element against the direction of action of the loading element from the moving surface can be acted upon, one being in operation between the Sealing element and the moving surface resulting sealing gap over the Reset element and / or the loading element can be predetermined.
  • a defined sealing gap can be set and be maintained during operation.
  • the desired Sealing effect can be achieved without pressing the sealing element against the relevant element moving surface can be reached, causing wear of the sealing element is reduced to a minimum.
  • a pressure on the sealing element against the moving surface occurs at most when starting the paper machine.
  • the sealing element is then relieved by the restoring element, so that it is practically no longer subject to wear. So there are none Lubricant required more.
  • the spray tubes previously used can thus eliminated.
  • the noise level is significantly reduced.
  • Sealing devices are the loading element and the restoring element each formed by a pressure hose. It is from Advantage if a water hose as a loading element and as a reset element an air hose is provided.
  • At least one of the two elements can be set with an adjustable pressure be acted upon.
  • an adjustable pressure be acted upon.
  • the way in which these elements are acted upon is advantageous if the loading element and the restoring element can be acted upon independently of one another are.
  • the water volume of the load element formed by a water hose can be set to a preferably adjustable during operation Value to be held.
  • the loading element and the return element in the direction of movement of the Sealing element arranged one above the other.
  • the loading element between the end of the surface facing away from the moving surface Sealing element and a holder-fixed stop and the restoring element between this holder-fixed stop and one with the sealing element connected stop may be arranged.
  • the loading element and that Reset element can thus on a common bracket-fixed stop be supported.
  • Sealing device are at least two moving in the direction of motion Surface load elements arranged next to one another are provided.
  • at least two in the running direction of the Moving surface provided side by side return elements be.
  • the Load and return elements are provided in pairs, each A restoring element is assigned to each loading element.
  • Load elements arranged side by side and / or side by side arranged reset elements can now differ in the way be acted upon that the correspondingly mounted sealing element in Operation takes an inclined position in relation to the moving surface with the moving surface a gap widening in the running direction form and thus in a adjoining a sealing area Ventilation area for ventilation provided in the moving area To provide openings.
  • This can be used, for example, in the area a transition from a negative pressure zone to an excess pressure zone Noise can be further reduced.
  • the Sealing element is mounted in the holder so that it is also limited is pivotable.
  • the sealing element at least substantially linear towards and towards the moving surface can be moved away from it, i.e. the sealing element practically not is pivotable, has the surface facing the moving surface of the Sealing element such as that of the moving surface Course that with this the gap widening in the running direction forms.
  • the sealing element can be, for example, a sealing strip be educated.
  • a sealing strip can in particular be transverse to Extend the direction of movement of the moving surface.
  • the sealing device can generally, for example, for lateral Sealing at least one to a rotating jacket of a suction or Blow roller or a moving belt such as in particular a conveyor belt, a press belt or the like adjacent pressure zone is provided which is a negative pressure or a positive pressure zone can act.
  • the sealing device can in particular also between Pressure zones of different pressure levels can be arranged, wherein for example, a pressure zone is also under atmospheric pressure can.
  • the sealing device for lateral delimitation of at least one adjacent to a rotating jacket of a suction or blowing roller Provided pressure zone, the sealing element is preferably by a extending at least substantially over the entire length of the roll Sealing strip formed.
  • the sealing device can be used, for example, for lateral sealing at least one on the inner wall of a rotating jacket of a suction or Blow roller adjacent inner pressure zone may be provided.
  • the sealing device is also used for lateral sealing at least one on the outer wall of a rotating jacket Suction or blow roller adjacent outer pressure zone can be used.
  • the sealing device can be used with particular advantage between on the one hand a suction or blow box and on the other hand the rotating jacket of a suction or blowing roller or a moving belt be provided.
  • Figure 1 shows a purely schematic representation of a first embodiment a sealing device 10, in particular for lateral sealing at least one overpressure or underpressure zone adjacent to a moving surface 12 can be used in a paper machine, wherein the moving surface 12 is, for example, the inner wall a suction roller can act and the sealing device 10 between a suction or vacuum zone S1 and, for example, the atmosphere exposed overpressure zone S2 can be provided.
  • the moving surface 12 is, for example, the inner wall a suction roller can act and the sealing device 10 between a suction or vacuum zone S1 and, for example, the atmosphere exposed overpressure zone S2 can be provided.
  • the sealing device 10 comprises one opposite the moving surface 12 Sealing element 14, a holder 16 associated therewith, in which the sealing element 14 in the direction of the moving surface 12 and is movably mounted away from it, and one through a pressure hose, in the present case a water hose, load element formed 18, through which the sealing element 14 in the direction of the moving surface 12 is too resilient.
  • the relief of the sealing element 14 serving restoring element 20 is provided.
  • this reset element 20 in the present case it is an air hose, through which the sealing element 14 against the direction of action of the loading element 18 can be acted upon by the moving surface 12 and thus is relieved.
  • the loading element 18 and the return element 20 in the perpendicular to the moving surface 12 Direction of movement of the sealing element 14 arranged one above the other.
  • the loading element 18 is between that of the moving surface 12 facing away from the end 22 of the sealing element 14 and a holder-fixed Stop 24 and the restoring element between this fixed Stop 24 and a stop connected to the sealing element 14 26 provided.
  • the stop 24 is fixed to the holder through the upper leg of one fastened by means of screws 28 to the holder 16 U-profile 30 formed.
  • the stop 26 is through the lower Leg of a by means of screws 32 at the end 22 of the sealing element 14 attached U-profile 34 formed.
  • the two interlocking U-profiles 30, 34 are between the lower end 22 of the sealing element 14 and the bottom 36 of a receptacle 38 formed in the holder 16, in which the sealing element 14 in the direction of the moving surface 12 is slidably inserted towards and away from this.
  • the discharge of the Restoring element 20 serving sealing element 14 is pressurized.
  • the water supply to the water hose forming the loading element 18 is cordoned off. Accordingly, the sealing element 14 is through the return element 20 against which a constant volume of water having, the loading element 18 forming water hose pressed.
  • the water volume is preferably also adjustable. In order to can a defined sealing gap 40 between the sealing element 14 and the moving surface 12 can be set.
  • two are in Direction L of the moving surface 12 load elements arranged next to one another 18 'and 18' 'and two next to each other in the running direction L.
  • arranged reset elements 20 'and 20' ' provided.
  • the stress and Reset elements are arranged in pairs so that they are inclined below a restoring element 20 'for each loading element 18', 18 '' or 20 '' is arranged.
  • a restoring element 20 'for each loading element 18', 18 '' or 20 '' is arranged.
  • the loading element 18 ', 18 "and the restoring element 20', 20" one each pair of elements is again in between arranged common bracket-fixed stop 24 'or 24' 'supported.
  • the restoring elements 20 ', 20' 'below are between the respective holder-fixed stop 24 'or 24' 'and a common stop 26 arranged, which is fixed via a web 42 to the lower end 22 of the Sealing element 14 is connected.
  • the common stop 26 is light at both ends is bent upwards, whereby not only the return elements accordingly be positioned, but at the same time generating a respective tilting moment is supported.
  • this embodiment has at least essentially the same structure as that of Figure 1.
  • Mutually corresponding parts provided with the same reference numerals. It also essentially results the same functionality as in the embodiment according to the Figure 1
  • the sealing element 14 can be designed and / or be acted upon in operation with the moving surface 12 gap 44 widening in the running direction L (cf. in particular FIG. 3) forms in a ventilation area adjoining a sealing area 46 48 for ventilation provided in the moving surface 12 To provide openings 50.
  • the moving Surface 12 thus formed in particular by the jacket of a suction roll be.
  • the gap 44 shown in FIG. 3 widening in the running direction L can, for example, by different water volumes in each loading elements 18 'formed by a water hose and 18 '' (see FIG. 2).
  • such a wedge-like opening to the overpressure zone S2 Gap 44 can also be generated, for example, in that the surface 52 of the strip-like surface facing the moving surface 12 Sealing element 14 corresponding to one of the moving surface 12 has a different course.
  • this surface 52 can accordingly the sector of a circle, its center is offset from the roller axis.

Landscapes

  • Paper (AREA)
  • Package Closures (AREA)
  • Sealing Devices (AREA)
EP98124724A 1998-03-16 1998-12-28 Dispositif d' étanchéité Expired - Lifetime EP0943729B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19811355A DE19811355A1 (de) 1998-03-16 1998-03-16 Dichtungseinrichtung
DE19811355 1998-03-16

Publications (3)

Publication Number Publication Date
EP0943729A2 true EP0943729A2 (fr) 1999-09-22
EP0943729A3 EP0943729A3 (fr) 2001-01-03
EP0943729B1 EP0943729B1 (fr) 2004-03-17

Family

ID=7861061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98124724A Expired - Lifetime EP0943729B1 (fr) 1998-03-16 1998-12-28 Dispositif d' étanchéité

Country Status (4)

Country Link
US (1) US6302399B1 (fr)
EP (1) EP0943729B1 (fr)
JP (1) JPH11315488A (fr)
DE (2) DE19811355A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007065833A1 (fr) * 2005-12-05 2007-06-14 Voith Patent Gmbh Languette d'appui deformable pour un tamis et une partie de tamis double
WO2007099203A1 (fr) * 2006-02-28 2007-09-07 Metso Paper, Inc. Reglage de la distance entre une boîte d'aspiration et un contre-rouleau
US10246825B2 (en) * 2016-03-17 2019-04-02 Andritz Inc. Supporting mechanism for a papermaking machine dewatering blade

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10110946A1 (de) * 2001-03-07 2002-09-12 Voith Paper Patent Gmbh Dichtungseinrichtung
SE0103105L (sv) * 2001-09-19 2002-08-06 Kvaerner Pulping Tech Tätningsordning för trumfilter eller filterpressar samt manschett och hållarelement till en sådan
US6505834B1 (en) * 2001-11-02 2003-01-14 General Electric Company Pressure actuated brush seal
US6916025B2 (en) * 2002-10-10 2005-07-12 Piston Technology, Llc Piston and seal for a storage tank
US6854736B2 (en) * 2003-03-26 2005-02-15 Siemens Westinghouse Power Corporation Seal assembly for a rotary machine
DE10322328A1 (de) * 2003-05-17 2004-12-23 Voith Paper Patent Gmbh Walzendichtung
DE10331399A1 (de) * 2003-07-11 2005-01-27 Voith Paper Patent Gmbh Dichtungseinrichtung für eine Papiermaschine
DE10336216A1 (de) * 2003-08-07 2005-03-03 Voith Paper Patent Gmbh Dichtungseinrichtung für eine Papiermaschine
FI120796B (fi) * 2006-03-31 2010-03-15 Metso Paper Inc Imulaatikon etäisyyden säätö vastatelasta
JP2009150015A (ja) * 2007-12-21 2009-07-09 Horikawa Seisakusho:Kk ブレード装置
AT516191B1 (de) 2014-09-15 2016-08-15 Röchling Leripa Papertech Gmbh & Co Kg Dichtleistensysteme für Saugwalzen
JP7016100B2 (ja) * 2020-02-04 2022-02-04 株式会社長谷川鉄工所 サクションロールにおけるシール装置
CN111776882B (zh) * 2020-06-29 2021-11-23 山东优派特造纸机械有限公司 一种造纸辊筒及其制造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802961A (en) * 1972-07-25 1974-04-09 Diamond Int Corp Seal construction for pressure or vacuum chambers
US4058435A (en) * 1976-07-15 1977-11-15 Diamond International Corporation Seal assembly for pressure or vacuum chambers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274641A (en) * 1938-02-07 1942-03-03 Abbott Suction roll
US2649719A (en) * 1949-04-27 1953-08-25 Beloit Iron Works Suction roll seal assembly
US3722895A (en) * 1970-12-30 1973-03-27 Dravo Corp Sealing device
DE3143866A1 (de) * 1981-11-05 1983-05-11 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Abdichtungsanordnung mit einem radialgleitring
US4714523A (en) * 1986-12-18 1987-12-22 Sawyer Jr William D Suction roll seal strips with teflon insert
DE4303298C1 (de) * 1993-02-05 1994-02-10 Gutehoffnungshuette Man Sperrmediumdichtung für Drehrohröfen
US5341726A (en) * 1993-03-31 1994-08-30 Watson M Burnell Piston for tank
FI100897B (fi) * 1993-11-05 1998-03-13 Valmet Paper Machinery Inc Paperikoneen imutelan imulaatikon tiivistysrakenne ja menetelmä imutel an tiivistekäytössä
FI99035C (fi) * 1995-11-03 1997-09-25 Valmet Corp Paperikoneen imutelan tiivisterakenne

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802961A (en) * 1972-07-25 1974-04-09 Diamond Int Corp Seal construction for pressure or vacuum chambers
US4058435A (en) * 1976-07-15 1977-11-15 Diamond International Corporation Seal assembly for pressure or vacuum chambers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007065833A1 (fr) * 2005-12-05 2007-06-14 Voith Patent Gmbh Languette d'appui deformable pour un tamis et une partie de tamis double
WO2007099203A1 (fr) * 2006-02-28 2007-09-07 Metso Paper, Inc. Reglage de la distance entre une boîte d'aspiration et un contre-rouleau
US10246825B2 (en) * 2016-03-17 2019-04-02 Andritz Inc. Supporting mechanism for a papermaking machine dewatering blade

Also Published As

Publication number Publication date
DE19811355A1 (de) 1999-09-23
EP0943729A3 (fr) 2001-01-03
US6302399B1 (en) 2001-10-16
EP0943729B1 (fr) 2004-03-17
DE59811001D1 (de) 2004-04-22
JPH11315488A (ja) 1999-11-16

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