WO1993006393A1 - Garniture d'etancheite - Google Patents

Garniture d'etancheite Download PDF

Info

Publication number
WO1993006393A1
WO1993006393A1 PCT/DE1992/000814 DE9200814W WO9306393A1 WO 1993006393 A1 WO1993006393 A1 WO 1993006393A1 DE 9200814 W DE9200814 W DE 9200814W WO 9306393 A1 WO9306393 A1 WO 9306393A1
Authority
WO
WIPO (PCT)
Prior art keywords
base
seal
annular gap
sealing
diameter
Prior art date
Application number
PCT/DE1992/000814
Other languages
German (de)
English (en)
Inventor
Francis Lebeau
Original Assignee
Advanced Products Dichtungen 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 Advanced Products Dichtungen Gmbh filed Critical Advanced Products Dichtungen Gmbh
Publication of WO1993006393A1 publication Critical patent/WO1993006393A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/56—Labware specially adapted for transferring fluids
    • B01L3/565—Seals
    • 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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/36—Control of physical parameters of the fluid carrier in high pressure liquid systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
    • G01N2030/326—Control of physical parameters of the fluid carrier of pressure or speed pumps
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/16—Injection
    • G01N30/20—Injection using a sampling valve
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/34—Control of physical parameters of the fluid carrier of fluid composition, e.g. gradient

Definitions

  • the invention relates to a seal with a sealing ring made of filled or unfilled polyethylene or polytetrafluoroethylene, which is seated in an annular gap between a cylindrical outer body and a cylindrical inner body which can be moved relative thereto, and which has an outer diameter of at most 12 mm and an essentially U-shaped cross section has a base and two sealing lips extending therefrom, one on the inner body and the other on the other. Attacks the outer body.
  • the spring element is intended to compensate for the cold flow and the wear of the sealing ring material or the sealing ring in addition to ensuring the required sealing.
  • Seals of the known type can be used for a variety of purposes; however, they often do not meet the requirements where high biological purity and metal-free systems are required with low frictional forces.
  • the object of the present invention is now ⁇ a ⁇ n to create a seal that meets these requirements.
  • the radial width of the base be 0, 5 5% is greater than the radial width of the ring gap, that the outer diameter of the base is 1-10% larger than the inner diameter of the outer body and that the sealing ring is metal-free.
  • a sealing ring designed in this way does not require the use of a separate spring element and nevertheless produces the required tightness.
  • the seal according to the invention can also be designed such that the sealing lips protrude beyond the base radially inwards or radially outwards by at least 0.05 mm. This further improves the seal.
  • the seal according to the invention is particularly suitable for use in gradient pumps in high pressure liquid chromatography, e.g. in valves, samplers and pump heads.
  • Fig. 1 shows the profile of a sealing ring of the seal according to the invention on an enlarged scale
  • Fig. 2 is a Axialscnnit 't through an opening formed between remindkör ⁇ via and the inner body seal with a sealing ring according to Fig.' 1.
  • the gasket according to the invention has a sealing ring 1 which is rotationally symmetrical with respect to the axis 2. It also has a base 3 with an axially extending inner surface 4 and an outer surface 5 running concentrically therewith. Furthermore, the base 3 is delimited by a flat end surface 6. The end face 6 is opposite an inner face 7, from which an inner sealing lip 8 and an outer sealing lip 9 extend essentially axially. The sealing lips ⁇ , 9 leave a cavity 10 between them.
  • the inner sealing lip S is radially inward and the outer sealing lip 9 is cambered radially outward, so that these sealing lips 8, 9 protrude beyond the respectively facing inner surface 4 or outer surface 5.
  • the sealing ring 1 is made in one piece from polyethylene or glass fiber reinforced polytetrafluoroethylene.
  • FIG. 2 now shows the seal according to the invention, in which the sealing ring 1 according to FIG. 1 is arranged in an annular gap 11 between a cylindrical outer body 12 and a cylindrical inner body 13 which can be moved relative thereto.
  • the radial width of the base 3 before installation, ie in the unloaded state, is 0.5 to 5% larger than the radial width of the annular gap 11.
  • the outer diameter of the base 3 is 1 to 10% larger as the inner diameter of the outer body 12.
  • the sealing lips 8, 9 protrude beyond the associated inner surface 4 or the outer surface 5 by at least 0.05 mm.
  • the seal according to the invention is characterized in that the side surfaces 4, 5 of the base 3 come into immediate pressure contact with the outer body 12 and the inner body 13 and assume a sealing function. This function is therefore not only performed by the sealing lips 8 and 9, but only supported by them. The desired reliable effectiveness of the seal is achieved without any metal parts. Such a seal is therefore used in particular for use in high-pressure liquid chromatography.

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Clinical Laboratory Science (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Closures For Containers (AREA)
  • Sealing Devices (AREA)

Abstract

Une garniture d'étanchéité comprend une bague d'étanchéité (1) située dans une fente annulaire entre un corps cylindrique extérieur et un corps cylindrique intérieur mobile par rapport au corps cylindirque extérieur. La bague d'étanchéité (1) se compose de polyéthylène ou de polytétrafuoroéthylène avec ou sans un renforcement en fibres de verre. La bague d'étanchéité (1) a un diamètre extérieur d'au maximum 12 mm et une section transversale essentiellement en U avec une base (3) de laquelle partent deux lèvres d'étanchéité (8, 9) . La première lèvre d'étanchéité est en contact avec le corps intérieur et l'autre lèvre d'étanchéité est en contact avec le corps extérieur. Pour qu'une telle garniture d'étanchéité soit biologiquement stérile et exempte de métaux, la largeur radiale de la base (3) avant le montage est de 0,5 à 5 % supérieure à la largeur radiale de la fente annulaire (11). En outre, le diamètre extérieur de la base (3) est au maximum 1 à 10 % supérieur au diamètre intérieur du corps extérieur (12). La bague d'étanchéité (1) ne comprend aucun ressort, elle est donc exempte de métaux.
PCT/DE1992/000814 1991-09-27 1992-09-19 Garniture d'etancheite WO1993006393A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4132227.4 1991-09-27
DE4132227A DE4132227A1 (de) 1991-09-27 1991-09-27 Dichtung

Publications (1)

Publication Number Publication Date
WO1993006393A1 true WO1993006393A1 (fr) 1993-04-01

Family

ID=6441637

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000814 WO1993006393A1 (fr) 1991-09-27 1992-09-19 Garniture d'etancheite

Country Status (2)

Country Link
DE (1) DE4132227A1 (fr)
WO (1) WO1993006393A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501118C2 (sv) * 1994-01-27 1994-11-21 Forsheda Ab Tätningsanordning mellan två element, företrädesvis rör eller brunnsringar av betong
US5472216A (en) * 1994-09-30 1995-12-05 Parker-Hannifin Corporation Seal ring for valve stem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2258576A1 (fr) * 1974-01-17 1975-08-18 Parker Hannifin Corp
EP0221245A2 (fr) * 1985-11-07 1987-05-13 Oras Oy Garniture élastique annulaire pour une robinetterie
DE8801765U1 (de) * 1988-02-11 1988-05-26 Fietz, Manfred, 5093 Burscheid Radialdichtring

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2258576A1 (fr) * 1974-01-17 1975-08-18 Parker Hannifin Corp
EP0221245A2 (fr) * 1985-11-07 1987-05-13 Oras Oy Garniture élastique annulaire pour une robinetterie
DE8801765U1 (de) * 1988-02-11 1988-05-26 Fietz, Manfred, 5093 Burscheid Radialdichtring

Also Published As

Publication number Publication date
DE4132227A1 (de) 1993-04-01

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