EP3234420A1 - Garniture étanche à anneau glissant et procédé de fabrication d'une garniture étanche à anneau glissant - Google Patents

Garniture étanche à anneau glissant et procédé de fabrication d'une garniture étanche à anneau glissant

Info

Publication number
EP3234420A1
EP3234420A1 EP15843080.1A EP15843080A EP3234420A1 EP 3234420 A1 EP3234420 A1 EP 3234420A1 EP 15843080 A EP15843080 A EP 15843080A EP 3234420 A1 EP3234420 A1 EP 3234420A1
Authority
EP
European Patent Office
Prior art keywords
housing
ring
mechanical seal
housing element
elements
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.)
Withdrawn
Application number
EP15843080.1A
Other languages
German (de)
English (en)
Inventor
Thomas Schmitt
Franz Kneidl
Achim Dehnz
Stefan Weigl
Erich Weber
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.)
Netzsch Pumpen and Systeme GmbH
Original Assignee
Netzsch Pumpen and Systeme 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 Netzsch Pumpen and Systeme GmbH filed Critical Netzsch Pumpen and Systeme GmbH
Publication of EP3234420A1 publication Critical patent/EP3234420A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
    • 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
    • F16J15/3464—Mounting of the seal
    • 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
    • F16J15/3436—Pressing means
    • F16J15/3452—Pressing means the pressing force resulting from the action of a spring

Definitions

  • the present invention relates to a mechanical seal and a method of manufacturing a mechanical seal according to the features of the preambles of
  • the invention relates to a mechanical seal. These are so-called dynamic seals for sealing rotating shafts against a side wall or the like, for example with respect to a machine housing.
  • the main components of action are two components sliding on one another, in particular a spring-loaded sliding ring and an associated counter-ring.
  • One of the two rings is rigidly arranged in a stationary housing element, the other ring is secured by means of anti-rotation pins or the like on the rotating shaft.
  • the areas between the two rings are - depending on the type of
  • Mechanical seal - usually flat and usually made of carbon graphite, metal, ceramic, plastic or resin-bonded carbon.
  • US 2006/0061041 A1 discloses the structure of a mechanical seal comprising a sliding ring sealing sleeve, in which in particular resilient ring elements are arranged, and a sliding ring sealing housing or a retaining ring.
  • the object of the invention is to produce a mechanical seal particularly cost. Another object of the invention is to make a mechanical seal technically easier, in particular using a smaller number of items.
  • the invention relates to a mechanical seal with a spring-loaded mating ring and a sliding ring slidably mounted on the mating ring which are arranged in a housing arrangement.
  • the housing arrangement comprises in particular a first movable housing element and a second stationary fixable housing element.
  • the ring pair formed from the sprung counter ring and the sliding ring is arranged in the housing arrangement, wherein the sprung counter ring is arranged in particular on the second housing element, while the slidably arranged sliding ring is associated with the first movable housing element.
  • the spring-loaded mating ring can be arranged on the first movable housing element and the sliding ring on the second static housing element.
  • the mechanical seal is used to seal a movable, in particular rotationally movable machine component relative to a stationary
  • the first movable housing element is attached to the sliding ring on a shaft, while the second housing element is arranged and fixed with the spring-loaded mating ring, for example in a shaft passage opening of the machine housing.
  • the person skilled in the art can analogously transfer the features of the invention described below to a mechanical seal in which the spring-loaded counter-ring on the first
  • the housing arrangement consists at least partially of a plastic and / or a composite material.
  • the first movable housing element which is also referred to as a mechanical seal sleeve
  • the second stationary fixable housing element which is also referred to as a mechanical seal housing
  • manufacture at least partially made of a plastic and / or a composite material it is provided to manufacture the first and / or the second housing element in each case as an injection molded part made of a plastic and / or a composite material, so that these preferably each completely made of plastic and / or a
  • Composites exist. As a composite material, in particular fiber-plastic composites or self-reinforced plastic composites are suitable. In particular, suitable materials or composite materials include
  • GRP Glass fiber reinforced plastic
  • CFRP carbon fiber reinforced plastic
  • AFK aramid fiber reinforced plastic
  • NFK natural fiber reinforced plastic
  • the material used can be processed very easily,
  • housing elements can be produced by injection molding, whereby the manufacturing cost compared to conventionally made of metal housing elements can be significantly reduced. Furthermore, the weight of such a mechanical seal is reduced.
  • the sliding ring in each case has first driver elements and the first movable housing element has in each case second driver elements for the first driver elements of the sliding ring, wherein the second driver elements engage in the first driver elements.
  • the mating ring in each case has third driver elements and that the second stationary fixable housing element in each case fourth
  • driver elements can also be configured such that the first engage in the second and / or the third in the fourth driver elements.
  • Sliding ring and counter ring conventionally consist of silicon carbide (SiC) or a metal, for example of a steel material or the like.
  • the first and / or the third driver elements of the sliding ring and counter ring are generally formed as recesses and thus also consist of silicon carbide (SiC) or a metallic material and thus have a first hardness.
  • Plastic or other suitable composite material at least due to the formation of the driver elements of the housing elements made of a plastic or other suitable composite material, these have a second, lower hardness, at least in the region of the driver elements.
  • the first housing element and / or the second housing element are each formed in one piece and comprise the driver elements as an integral part.
  • the driver elements as an integral part.
  • Housing element attached, but are formed at the same time in the production of the first and / or second housing element.
  • the entrainment of the sliding surfaces of the sliding ring and the counterring takes place by means of metallic cylinder pins arranged on the housing elements.
  • it can always come to chipping the driver elements.
  • This is in particular due to a high torque of the sliding surfaces of sliding and counter ring or by an abrupt start of the movable machine part in combination with cooperating first and second or third and fourth driver elements, each of which has a similar or comparable hardness.
  • the second and fourth driving elements of the housing elements now consist of a plastic or other suitable composite material with a second, lower hardness
  • a material pairing is now given by two different material hardness, in particular results in a combination of hard hard first driver elements and soft second driver elements and hard third driver elements and soft fourth driver elements. This can be prevented in particular that the sliding surfaces of sliding and counter ring are damaged by excessive torque.
  • the second and fourth driver elements already pass through during the production of the housing elements
  • the suspension of the sliding ring is formed by a plurality of coil springs, that is, the suspension is designed as a kind of group suspension.
  • the second housing element has specially designed receptacles or
  • the injection molding tool for producing the second housing element can be designed such that the spring receptacles are injected directly into the second housing element as indentations during the production of the second housing element by injection molding.
  • coil springs are used whose outer diameter is approximately the inner diameter of the
  • Spiral springs is that the force exerted on the sliding surfaces of the sliding and counter-ring force can be easily adjusted or adjusted if necessary.
  • the mechanical seal of the invention is technically much easier to manufacture, as a conventionally known mechanical seal, in particular a mechanical seal, in which the counter-ring or the sliding ring is sprung over an array of sinusoidal springs.
  • FIG. 2 shows a schematic partial representation of a mechanical seal housing of a mechanical seal according to the invention.
  • Figure 3 shows a schematic partial view of a mechanical seal housing with the associated seal ring of a mechanical seal according to the invention.
  • FIG. 1 shows an exploded view of the components of a mechanical seal 1 according to the prior art.
  • a mechanical seal 1 has, in particular, a housing arrangement 2, in which a sprung counter-ring 3 and a sliding ring 4 are arranged.
  • the housing assembly 2 comprises a movably formed housing element 5 and a stationary fixable housing element 6.
  • the movably formed housing element 5 is also referred to as a mechanical seal sleeve
  • the stationary fixable housing element 6 is also referred to as a mechanical seal housing 15.
  • the movably formed housing member 5 is assigned in the illustrated embodiment, the movable seal ring 4, while the stationary fixable housing member 6 of the spring-loaded mating ring 3 is assigned.
  • the spring-loaded mating ring 3 forms the standing surface and the sliding ring 4 forms the rotating surface of the mechanical seal 1.
  • the housing elements 5, 6 are conventionally each made of metal.
  • the housing elements by turning and more
  • the suspension 9 of the mating ring 3 is formed in particular by a plurality of sinusoidal springs 12, which are arranged between two metal rings 13-1, 13-2, which serve for the axial fixation of the suspension 9.
  • the mechanical seal 1 comprises a
  • Figure 2 shows a schematic partial view of a fixed fixable
  • Housing member 6 in particular a mechanical seal housing 15 of a mechanical seal according to the invention and Figure 3 shows a schematic partial view of a mechanical seal housing 15 with the associated counter-ring 3 of a mechanical seal according to the invention.
  • Mechanical seal housing 15 has in particular driver elements 8 and
  • injection-molded mechanical seal housing 15 are necessary.
  • coil springs 10 are used.
  • the counter-ring 3 is placed according to FIG.
  • the counter ring 3 also has driver elements 7. In particular, these are formed as notches 16, so that the driver elements 8 of the
  • Driver elements 7, 8 each a game is formed. According to a further embodiment, it is provided that the driver elements 8 of the
  • Mechanical seal housing 15 largely free of play positively and / or non-positively engage in the driver elements 7 of the mating ring 3.
  • the counter-ring 3 presses in the spring receptacles 11 of the

Landscapes

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

Abstract

L'invention concerne une garniture étanche à anneau glissant (1) comprenant un ensemble boîtier (2), un anneau complémentaire (3) élastique et un anneau glissant (4) associé de manière glissante à l'anneau complémentaire. L'ensemble boîtier comprend un premier élément de boîtier (5) mobile ; et un deuxième élément de boîtier (6) pouvant être fixé à demeure. Selon l'invention, l'ensemble boîtier est constitué au moins en partie d'une matière plastique et/ou d'un matériau composite. L'invention concerne en outre un procédé de fabrication d'une garniture étanche à anneau glissant.
EP15843080.1A 2014-12-18 2015-12-18 Garniture étanche à anneau glissant et procédé de fabrication d'une garniture étanche à anneau glissant Withdrawn EP3234420A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014118987.6A DE102014118987A1 (de) 2014-12-18 2014-12-18 Gleitringdichtung und Verfahren zur Herstellung einer Gleitringdichtung
PCT/DE2015/000600 WO2016095893A1 (fr) 2014-12-18 2015-12-18 Garniture étanche à anneau glissant et procédé de fabrication d'une garniture étanche à anneau glissant

Publications (1)

Publication Number Publication Date
EP3234420A1 true EP3234420A1 (fr) 2017-10-25

Family

ID=55538149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15843080.1A Withdrawn EP3234420A1 (fr) 2014-12-18 2015-12-18 Garniture étanche à anneau glissant et procédé de fabrication d'une garniture étanche à anneau glissant

Country Status (7)

Country Link
EP (1) EP3234420A1 (fr)
JP (1) JP2018500519A (fr)
KR (1) KR20170094437A (fr)
CN (1) CN107002884A (fr)
DE (1) DE102014118987A1 (fr)
RU (1) RU2017125465A (fr)
WO (1) WO2016095893A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072851B (de) * 1960-01-07 Klein Schanzlm £v Becker Aktiengesellschaft, Frankenthal (Pfalz) Gleit ringdichtung zur Abdichtung des 'Wellenspaltes von Kreiselmaschinen
EP1630463A1 (fr) * 2004-08-19 2006-03-01 Eagle Industry Co., Ltd. Joint d'étanchéité mécanique

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8437907U1 (de) * 1985-04-11 Vereinigte Kunststoff-Pumpen GmbH, 5439 Rennerod Abdichtvorrichtung
ZA834526B (en) * 1982-07-02 1984-08-29 Chesterton A W Co Mechanical seal
EP0242757A1 (fr) * 1982-07-02 1987-10-28 A.W. Chesterton Company Garniture mécanique
DE3507819A1 (de) * 1985-03-06 1986-09-11 Manfred 4322 Sprockhövel Sade Gleitringdichtung
JP2918844B2 (ja) * 1996-05-07 1999-07-12 日本ピラー工業株式会社 シール装置
US5863047A (en) * 1997-01-24 1999-01-26 Utex Industries, Inc. Mechanical seal assembly
DE29714224U1 (de) * 1997-08-08 1997-10-30 Depac Dichtungstechnik Gmbh, Bludenz Gleitringdichtung
TWM262618U (en) 2004-09-22 2005-04-21 Scenic Precise Element Inc Transmission member structure of cartridge inner seal
JP5373651B2 (ja) * 2010-01-21 2013-12-18 日本ピラー工業株式会社 メカニカルシール
CN202418589U (zh) * 2011-12-02 2012-09-05 芜湖市中天密封件有限公司 密封件
CN203670781U (zh) * 2013-12-26 2014-06-25 宁波安铱矢密封有限公司 一种防结晶的双端面密封结构
CN203730768U (zh) * 2013-12-30 2014-07-23 新疆乌苏市北方新科有限公司 卡套式多弹簧机械密封

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072851B (de) * 1960-01-07 Klein Schanzlm £v Becker Aktiengesellschaft, Frankenthal (Pfalz) Gleit ringdichtung zur Abdichtung des 'Wellenspaltes von Kreiselmaschinen
EP1630463A1 (fr) * 2004-08-19 2006-03-01 Eagle Industry Co., Ltd. Joint d'étanchéité mécanique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016095893A1 *

Also Published As

Publication number Publication date
DE102014118987A1 (de) 2016-06-23
RU2017125465A (ru) 2019-01-18
JP2018500519A (ja) 2018-01-11
KR20170094437A (ko) 2017-08-17
WO2016095893A1 (fr) 2016-06-23
CN107002884A (zh) 2017-08-01
RU2017125465A3 (fr) 2019-01-18

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Inventor name: DEHNZ, ACHIM

Inventor name: WEIGL, STEFAN

Inventor name: KNEIDL, FRANZ

Inventor name: SCHMITT, THOMAS

Inventor name: WEBER, ERWIN

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