EP1559916B1 - Utilisation d'éléments céramique sollicités en flexion et en compression dans des pompes - Google Patents

Utilisation d'éléments céramique sollicités en flexion et en compression dans des pompes Download PDF

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Publication number
EP1559916B1
EP1559916B1 EP05001629A EP05001629A EP1559916B1 EP 1559916 B1 EP1559916 B1 EP 1559916B1 EP 05001629 A EP05001629 A EP 05001629A EP 05001629 A EP05001629 A EP 05001629A EP 1559916 B1 EP1559916 B1 EP 1559916B1
Authority
EP
European Patent Office
Prior art keywords
housing
compensation elements
drive shaft
way
partition walls
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
EP05001629A
Other languages
German (de)
English (en)
Other versions
EP1559916A3 (fr
EP1559916A2 (fr
Inventor
Edgar Czudnochowski
Stefan Leuchtenberger
Roland Fach
Klaus Engels
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.)
Venator Germany GmbH
Original Assignee
Sachtleben Chemie 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 Sachtleben Chemie GmbH filed Critical Sachtleben Chemie GmbH
Publication of EP1559916A2 publication Critical patent/EP1559916A2/fr
Publication of EP1559916A3 publication Critical patent/EP1559916A3/fr
Application granted granted Critical
Publication of EP1559916B1 publication Critical patent/EP1559916B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0465—Ceramic bearing designs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a pump with a arranged in a metallic housing drive shaft which is connected in a pumping chamber with an impeller for conveying liquid media, wherein the delivery chamber is connected to a drive side of the drive shaft via a sealing space and the sealing space on the drive shaft in Axial direction behind one another arranged impellers consists, which rotate between axially in succession arranged partitions of the housing.
  • Pumps or circulating pumps are used, for example, in the chemical industry for conveying and / or circulating aggressive media (see DE 2 556 931 A1 , which discloses all features of the preamble of claim 1, and EP 0 867 620 A1 . EP 0 476 744 B1 . EP 1 225 379 A1 . EP 1 225 342 A1 ).
  • the invention is based on the object of finding an intermediate wall system for the shaft sealing system in the sealing space, which increases the reliability and availability and reduces the maintenance costs.
  • this object is achieved in that the intermediate walls are made of a ceramic and rest against each other and the housing via elastic compensation elements.
  • Ceramic materials are generally prone to brittle fracture under compression and flexing loads as well as stress from shock and heat stress. However, these materials are extremely resistant to aggressive media.
  • the ceramic partitions according to the invention are therefore almost resistant to these aggressive media. Since these ceramic partitions have a different thermal expansion than the surrounding housing, according to the invention, the intermediate walls abut against each other and on the housing via elastic compensation elements.
  • the elastic compensation elements of a fluoro-elastomer preferably Viton B.
  • This material is particularly suitable as a compensation element, because it has both a high chemical resistance and sealing property and an extremely high elasticity.
  • the ceramic partitions abut each other via flat gaskets as compensation elements.
  • the partitions are on the housing in the axial direction as well on flat gaskets as compensation elements.
  • the intermediate walls are preferably on O-rings as compensation walls.
  • This single figure shows a shaft sealing system (hereinafter also referred to as sealing space) of a pump which promotes aggressive media.
  • a drive shaft 1 drives an impeller (not shown) in a delivery chamber 8.
  • the delivery chamber 8 is separated from the drive side 9 via a shaft sealing system in the sealing space 10.
  • wheels 6 on the drive shaft 1 are wheels 6 (in this embodiment, there are two wheels 6) arranged to rotate with the drive shaft 1 and are arranged one behind the other in the axial direction of the drive shaft 1.
  • the wheels 6 rotate in this case between axially arranged in succession ceramic intermediate walls 3 a, 3 b, 3 c.
  • the sealing space 10 is closed off by a metallic rear wall 7.
  • the intermediate walls 3 a, 3 b, 3 c abut each other and on the housing 2 or its parts via elastic compensation elements 5 d - i.
  • compensation elements 5 d - i are in this case fluoroelastomers, preferably Viton B.
  • the conveyor chamber 8 facing intermediate wall 3 a is located on the housing 2 in the radial direction via an O-ring 5 d and in the axial direction via a flat gasket 5 i.
  • intermediate wall 3 a at the adjacent intermediate wall 3 b via a flat gasket 5 e.
  • intermediate wall 3 b is located on the intermediate wall 3 c via a flat gasket 5 f.
  • the facing to the drive side 9 intermediate wall 3 c is in the radial direction of the drive shaft 1 on the rear wall 7 via an O-ring 5 g and in the axial direction via a flat gasket 5 h.
  • a ceramic-ceramic seal pairing (5 e, 5 f) always takes place via flat seals and a ceramic-metal seal pairing preferably via O-rings.
  • a bore is arranged in these, in which a centering and guide unit 4 is inserted, which preferably consists of wood or plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Mechanical Sealing (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (5)

  1. Pompe dotée d'un arbre d'entraînement (1) disposé dans un boîtier métallique (2) et relié, dans une chambre de refoulement (8), à un rotor servant à refouler des milieux liquides, dans laquelle la chambre de refoulement (8) est reliée à un côté entraînement (9) de l'arbre d'entraînement (1) par l'intermédiaire d'une chambre d'étanchéité (10) et la chambre d'étanchéité (10) est composée de rotors (6) qui sont disposés les uns derrière les autres en direction axiale sur l'arbre d'entraînement (1) et qui tournent entre des parois intermédiaires (3a, 3b, 3c) du boîtier (2), lesquelles sont disposées les unes derrière les autres en direction axiale, caractérisée en ce que les parois intermédiaires (3a, 3b, 3c) sont constituées de céramique et prennent appui les unes sur les autres et sur le boîtier (2) par l'intermédiaire d'éléments de compensation élastiques (5d - i).
  2. Pompe selon la revendication 1, caractérisée en ce que les éléments de compensation élastiques (5d - i) sont constitués d'élastomère fluoré, de préférence de Viton B.
  3. Pompe selon la revendication 1 ou 2, caractérisée en ce que les parois intermédiaires (3a, 3b, 3c) prennent appui les unes sur les autres par l'intermédiaire de joints plats (5e, 5f) faisant fonction d'éléments de compensation.
  4. Pompe selon une des revendications 1 à 3, caractérisée en ce que les parois intermédiaires (3a, 3b, 3c) prennent appui sur le boîtier (2) en direction radiale par l'intermédiaire de joints toriques (5d, 5g) faisant fonction d'éléments de compensation.
  5. Pompe selon une des revendications 1 à 4, caractérisée en ce que les parois intermédiaires (3a, 3b, 3c) prennent appui sur le boîtier (2) en direction axiale par l'intermédiaire de joints plats (5i, 5h) faisant fonction d'éléments de compensation.
EP05001629A 2004-01-28 2005-01-27 Utilisation d'éléments céramique sollicités en flexion et en compression dans des pompes Expired - Lifetime EP1559916B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004004159 2004-01-28
DE102004004159A DE102004004159A1 (de) 2004-01-28 2004-01-28 Einsatz von statisch und dynamisch druck- und biegebeanspruchten keramischen Bauteilen als Druckentlastungselemente in Pumpen

Publications (3)

Publication Number Publication Date
EP1559916A2 EP1559916A2 (fr) 2005-08-03
EP1559916A3 EP1559916A3 (fr) 2010-01-13
EP1559916B1 true EP1559916B1 (fr) 2011-09-21

Family

ID=34638769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05001629A Expired - Lifetime EP1559916B1 (fr) 2004-01-28 2005-01-27 Utilisation d'éléments céramique sollicités en flexion et en compression dans des pompes

Country Status (4)

Country Link
EP (1) EP1559916B1 (fr)
AT (1) ATE525572T1 (fr)
DE (1) DE102004004159A1 (fr)
ES (1) ES2374678T3 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556931C3 (de) * 1975-08-21 1980-03-20 Mitsui Kinzoku Engineering Service Co., Ltd. Abwasserpumpe
DE3826472A1 (de) * 1988-08-04 1990-02-08 Klein Schanzlin & Becker Ag Kreiselpumpe keramischer bauart
DE19712324C2 (de) * 1997-03-24 2000-05-11 Renner Gmbh Umwälzpumpe oder Rührwerk für erwärmte chemische Lösungen
DE10102103A1 (de) * 2001-01-18 2002-09-12 Sachtleben Chemie Gmbh Dichtungsbalgsystem für rotierende Wellen

Also Published As

Publication number Publication date
ES2374678T3 (es) 2012-02-21
EP1559916A3 (fr) 2010-01-13
EP1559916A2 (fr) 2005-08-03
ATE525572T1 (de) 2011-10-15
DE102004004159A1 (de) 2005-08-25

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