WO2007124950A1 - Garniture d'étanchéité à anneau coulissant présentant un joint d'étanchéité à soufflet - Google Patents

Garniture d'étanchéité à anneau coulissant présentant un joint d'étanchéité à soufflet Download PDF

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Publication number
WO2007124950A1
WO2007124950A1 PCT/EP2007/003857 EP2007003857W WO2007124950A1 WO 2007124950 A1 WO2007124950 A1 WO 2007124950A1 EP 2007003857 W EP2007003857 W EP 2007003857W WO 2007124950 A1 WO2007124950 A1 WO 2007124950A1
Authority
WO
WIPO (PCT)
Prior art keywords
bellows
seal
mechanical seal
bellows seal
perfluorinated
Prior art date
Application number
PCT/EP2007/003857
Other languages
German (de)
English (en)
Inventor
Robert Woppowa
Reinhard Svejkovsky
Rudolf Schicktanz
Shigeyoshi Sakada
Fujio Nakamura
Shiroh Ohsumi
Original Assignee
Burgmann Industries Gmbh & Co. Kg
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 Burgmann Industries Gmbh & Co. Kg filed Critical Burgmann Industries Gmbh & Co. Kg
Publication of WO2007124950A1 publication Critical patent/WO2007124950A1/fr

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Classifications

    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/36—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm or bellow to the other member

Definitions

  • the present invention relates to a mechanical seal assembly according to the preamble of claim 1 and to a bellows seal and the use of the bellows seal for such a mechanical seal assembly.
  • the invention thus relates generally to mechanical seal assemblies with a bellows seal of resilient material to provide an axially compliant connection of a sliding ring with a rotating member, as e.g. B. from Burgmann Lexicon, ABC of the mechanical seal, 1988 self-published, p 22-23 is known.
  • the bellows seal takes over the task of the dynamic secondary seal.
  • a mechanical seal assembly which has high temperature resistance and / or high chemical resistance.
  • This object is achieved by a mechanical seal assembly according to claim 1, wherein the bellows seal is constructed essentially of a perfluoroelastomer-containing material and / or FFKM perfluorinated rubber according to DIN ISO 1629.
  • perfluororubber are on the one hand difficult to process for complex geometries or complicated or almost impossible to produce, in particular a high crack formation during removal from the production tool can occur in geometrically complex shapes, whereby an element made of perfluor rubber is not usable as a sealing element or rejects .
  • perfluororubbers are very expensive to manufacture, with the price ratio to SBR being about 5000: 1.
  • bellows seals made of perfluoroelastomer Webm material and / or FFKM perfluorinated rubber to DIN ISO 1629 can be produced, which have appropriate fits for use in a mechanical seal assembly and because of their high temperature resistance and the high chemical resistance are particularly advantageous.
  • the bellows seal according to the invention may have a heat resistance of up to 260 0 C, with special types to over 300 0 C. Furthermore, bellows seals according to the invention when used in the mechanical seal assembly according to the invention have a high chemical resistance to almost all chemical categories, such. As polar solvents, ketone esters, ethers, aliphatic,
  • the mechanical seal assemblies according to the invention are particularly insensitive to contamination and deposits, since the bellows region of the bellows seal made of perfluoroelastomer ensures a desired axial mobility and thus provides improved operational reliability for the mechanical seal assembly according to the invention.
  • the low adhesion tendency of the perfluoroelastomer is advantageous, by which contaminants on the bellows seal made of perfluoroelastomer do not adhere or adhere only to a small extent, and as a result of which the repositioning behavior is not hindered.
  • the bellows seal according to the invention made of perfluoroelastomer-containing material and / or FFKM perfluorinated rubber consists essentially of a copolymer of tetrafluoroethylene and perfluoromethylvinylether with a small addition of a cross-linking monomer, which brings about a cross-linking by a perfluorinated compound having functional groups.
  • the bellows seal is preferably made of FFKM perfluorinated rubber in which all substituents of the polymer chain are fluorine, perfluoroalkyl or perfluoroalkoxy groups.
  • fillers are provided in addition to the rubber for the bellows seal, which comprise in particular perfluorinated plasticizer oils.
  • vulcanizing agents are provided in addition to the rubber for the bellows seal, in particular bisphenol AF or peroxide with coagent.
  • the bellows seal according to the invention has at least one bellows area and end-side mounting areas, one of which is provided for rotationally fixed mounting on the rotating component or another element and the other for supporting a sliding ring, wherein the bellows seal consists essentially of a perfluoroelastomer-containing material and / or made of FFKM perfluorinated rubber according to DIN ISO 1629, and wherein the bellows seal according to the invention is used in particular in a mechanical seal arrangement with at least one sliding ring on which acts a biasing force for sealing between a stationary component and a rotating component.
  • Figure 1 shows in longitudinal section a rotationally symmetrical part of the mechanical seal assembly according to the invention in the installed state
  • FIG. 2 shows, in an enlarged longitudinally sectioned detail view, the rotating part of the mechanical seal arrangement of FIG. 1.
  • the mechanical seal assembly carries in Figure 1 the general reference numeral 1 and comprises a pair of cooperating seal rings 2, 3, of which the slide ring 2 on a stationary component, for. B. the housing 4 of a pump or the like, is rotatably held in a suitable manner.
  • the other slide ring 3, however, is for common rotation with a rotating component, for.
  • As a shaft 5, is provided, which is to be sealed by means of the mechanical seal assembly relative to the housing 4.
  • the sliding rings 2, 3 have radial or approximately radial sealing surfaces, between which a sealing gap is formed during operation.
  • FIG. 2 shows the rotating part of the mechanical seal assembly on an enlarged scale.
  • This comprises a bellows arrangement in the form of a bellows seal 6 which is constructed essentially of a perfluoroelastomer-containing material and / or of FFKM perfluorinated rubber according to DIN ISO 1629.
  • the bellows seal 6 made of perfluoro-elastomeric material and / or FFKM perfluorinated rubber essentially consists of a copolymer of tetrafluoroethylene and perfluoromethyl vinyl ether with a small addition of a crosslinking monomer which brings about crosslinking by means of a perfluorinated compound having functional groups.
  • the bellows seal 6 can be defined in a conventional manner in three areas, namely a first mounting area 8, one axially spaced second mounting portion 9 and the two mounting areas 8, 9 interconnecting foldable bellows area or intermediate area 7.
  • the foldable bellows area 7 can in use, as shown in Figure 2 assume a Z-shaped configuration.
  • the invention is not limited to such a configuration of the foldable region 7.
  • Other possible configurations are e.g. B. Burgmann Lexikon a.a.O., refer to p.
  • the mounting areas 8, 9 preferably have a substantially tubular design.
  • the bellows assembly may further include a driver housing 12 having a first power transmission area 13 and a second reduced diameter power transmission area 14 interconnected by an intermediate shoulder or heel area 15.
  • the first power transmission portion 13 is configured to receive the first mounting portion 8 of the bellows seal 6 such that with a coaxial cross-relationship between the slip ring 3, the mounting portion 8, and the power transmission portion 13, as shown in FIG. 2, the bellows seal mounting portion 8 6 sandwiched between the
  • a solid compound for. B. by gluing or the like may be provided.
  • the second power transmission portion 14 of the driver housing 12 defines a bore or through hole having a radially inner dimension D.
  • the second power transmission portion 14 may include a plurality of circumferentially spaced, axially extending fingers disposed in axial grooves 17 in a drive ring 16 of a suitable material, such as metal , intervene.
  • the driving ring 16 is, preferably non-positively fixed to the second mounting portion 9 of the bellows seal 6, or this fixation is obtained during assembly by the bellows seal 6 is placed with the driving ring 16 with undersize on the shaft 5. A rotation of the shaft 5 is therefore transmitted via the mounting portion 9 and the driver ring 16 on the driver housing 12 and from there in the manner described above on the slide ring 3.
  • a biasing means is provided to mechanically bias the slip ring 3 against the stationary slip ring 2.
  • it preferably comprises a helical or coiled spring 10 which is supported at one end on a shaft shoulder, see Figure 1, and at the other end on the shoulder portion 15 of the driver housing 12.
  • the coil spring 10 includes some tight-fitting windings surrounding the second power transmission portion 14 of the driver housing 12 on the outside and a possible spread
  • the helical spring 10 also preferably, as Figure 1 shows, a conical design.
  • a support member 11 may be provided which is held in a suitable manner by the bellows seal 6.
  • the support member 11 may be an annular disk of a suitable material, such as metal, which has sufficient rigidity to, unlike the bellows seal 6, not yield or only to a much lesser extent yield by deformation.
  • the support element 11 could also consist of a dimensionally stable plastic material such as PEEK or the like.
  • the support member 11 is externally circumferentially, non-positively or by gluing, held in a groove in the first mounting portion 8 of the bellows seal 6 near the foldable portion 7 and includes a bore through which the shaft 5 is passed.
  • the support member 11 further has a certain radial outer dimension A, which is larger by a suitable amount than the radial inner dimension D of the bore of the second power transmission region 14 of the driver housing 12.
  • the sliding ring 3 can rest with its adjacent end side on an end face of the support member 11 axially, while at the opposite end face of the support member 11, a portion of the foldable portion 7 of the bellows seal 6 can be supported during use and operation.
  • the bellows seal is a sealing element, which is constructed essentially of the perfluoroelastomer Webn material or FFKM perfluorinated rubber according to DIN ISO 1629, wherein the bellows seal according to the invention can be used and sold together with the mechanical seal assembly or as a separate component for retrofitting.
  • the bellows seal according to the invention which is constructed from perfluoro-elastomer and / or perfluorinated rubber, can be used for mechanical seal arrangements which have at least one seal ring for sealing between a stationary component and a rotating component, wherein a spring force acts on the slip ring. and the bellows seal having at least one bellows portion and end mounting portions, one of which is provided for rotationally fixed mounting on the rotating member or another element and the other for supporting the sliding ring.
  • 2007 BU ⁇ 9H03 / P-WO like material and end mounting areas comprises, one of which is provided for rotationally fixed mounting on the rotating member or another element and the other for holding the sliding ring, wherein the bellows seal consists essentially of a perfluoroelastomeriferous material and / or FFKM perfluorinated rubber according to DIN ISO Built in 1629.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)

Abstract

L'invention concerne une garniture d'étanchéité à anneau coulissant, et un joint d'étanchéité à soufflet (6), ainsi que l'utilisation du joint à soufflet pour une telle garniture d'étanchéité à soufflet. Cette garniture comprend au moins un anneau coulissant (2, 3) garantissant l'étanchéité entre un composant stationnaire et un composant rotatif, une force de précontrainte s'exerçant sur l'anneau coulissant (2, 3), et le joint d'étanchéité à soufflet (6), lequel comprend au moins une zone à soufflet (7) en un matériau élastique et des zones de montage (8, 9) aux extrémités, l'une d'elles étant prévue pour le montage, solidaire en rotation, sur le composant rotatif ou sur un autre élément, et l'autre étant prévue pour le maintien de l'anneau coulissant (2, 3). L'invention est caractérisée en ce que le joint à soufflet (6) est fabriqué essentiellement en un matériau renfermant un élastomère perfluoré et/ou en caoutchouc perfluoré FFKM conforme à la norme DIN ISO 1629.
PCT/EP2007/003857 2006-05-02 2007-05-02 Garniture d'étanchéité à anneau coulissant présentant un joint d'étanchéité à soufflet WO2007124950A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610020114 DE102006020114A1 (de) 2006-05-02 2006-05-02 Gleitringdichtungsanordnung mit Balgdichtung
DE102006020114.0 2006-05-02

Publications (1)

Publication Number Publication Date
WO2007124950A1 true WO2007124950A1 (fr) 2007-11-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/003857 WO2007124950A1 (fr) 2006-05-02 2007-05-02 Garniture d'étanchéité à anneau coulissant présentant un joint d'étanchéité à soufflet

Country Status (2)

Country Link
DE (1) DE102006020114A1 (fr)
WO (1) WO2007124950A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015158442A1 (fr) * 2014-04-15 2015-10-22 Eagleburgmann Germany Gmbh & Co. Kg Dispositif d'étanchéité à anneau glissant comportant un soufflet
CN107762964A (zh) * 2017-11-21 2018-03-06 浙江天鹰机械密封件有限公司 单端面机械密封

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015213472B3 (de) * 2015-07-17 2016-10-06 Eagleburgmann Germany Gmbh & Co. Kg Gleitringdichtungsanordnung mit Balgelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340121A (en) * 1992-10-15 1994-08-23 Furon Company Face seal with integral fluorocarbon polymer bellows
DE29805089U1 (de) * 1998-03-20 1998-06-10 Feodor Burgmann Dichtungswerke GmbH & Co., 82515 Wolfratshausen Gleitringdichtungsanordnung
WO2003064901A1 (fr) * 2002-02-01 2003-08-07 Burgmann Dichtungswerke Gmbh & Co. Kg Sous-ensemble pour joint a anneau coulissant
EP1426619A2 (fr) * 2002-12-03 2004-06-09 Nippon Pillar Packing Co., Ltd. Pompe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5848617A (en) * 1994-07-08 1998-12-15 Nok Corporation Bellows and method for manufacturing the same
DE69607753T2 (de) * 1996-09-18 2000-11-30 E.I. Du Pont De Nemours And Co., Wilmington Bei Raumtemperatur härtbare Vinylidenfluoridcopolymere mit niedrigem Molekulargewicht
JP2004301254A (ja) * 2003-03-31 2004-10-28 Koyo Seiko Co Ltd 転がり軸受の密封装置
JP4601942B2 (ja) * 2003-11-20 2010-12-22 イーグル工業株式会社 シール装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340121A (en) * 1992-10-15 1994-08-23 Furon Company Face seal with integral fluorocarbon polymer bellows
DE29805089U1 (de) * 1998-03-20 1998-06-10 Feodor Burgmann Dichtungswerke GmbH & Co., 82515 Wolfratshausen Gleitringdichtungsanordnung
WO2003064901A1 (fr) * 2002-02-01 2003-08-07 Burgmann Dichtungswerke Gmbh & Co. Kg Sous-ensemble pour joint a anneau coulissant
EP1426619A2 (fr) * 2002-12-03 2004-06-09 Nippon Pillar Packing Co., Ltd. Pompe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Burgmann Lexikon, ABC der Gleitdichtung.", 1988, SELBSTVERLAG., pages: 22 - 23

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015158442A1 (fr) * 2014-04-15 2015-10-22 Eagleburgmann Germany Gmbh & Co. Kg Dispositif d'étanchéité à anneau glissant comportant un soufflet
CN105003652A (zh) * 2014-04-15 2015-10-28 伊格尔博格曼德国有限公司 机械密封装置
US10480658B2 (en) 2014-04-15 2019-11-19 Eagleburgmann Germany Gmbh & Co. Kg Mechanical seal arrangement having a bellows element
CN107762964A (zh) * 2017-11-21 2018-03-06 浙江天鹰机械密封件有限公司 单端面机械密封

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