CN107504186B - A kind of adaptive transformation operating mode type assembly type rubber sealing structure - Google Patents

A kind of adaptive transformation operating mode type assembly type rubber sealing structure Download PDF

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Publication number
CN107504186B
CN107504186B CN201710721909.XA CN201710721909A CN107504186B CN 107504186 B CN107504186 B CN 107504186B CN 201710721909 A CN201710721909 A CN 201710721909A CN 107504186 B CN107504186 B CN 107504186B
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China
Prior art keywords
flexible sheet
hole
sealing
carrier bar
rubber
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CN201710721909.XA
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Chinese (zh)
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CN107504186A (en
Inventor
彭旭东
王冰清
孟祥铠
李纪云
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Priority to CN201710721909.XA priority Critical patent/CN107504186B/en
Publication of CN107504186A publication Critical patent/CN107504186A/en
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    • 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
    • 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
    • F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
    • 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
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • 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
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of 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
    • F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
    • F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Fluid Mechanics (AREA)
  • Sealing Devices (AREA)
  • Diaphragms And Bellows (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

A kind of adaptive transformation operating mode type assembly type rubber sealing structure, adaptive variable working condition thrust hold-down mechanism and sealing mechanism including being located at sealed medium side or fluid high-pressure side, the adaptive variable working condition thrust hold-down mechanism includes fastening component, flexible sheet, throw-out collar, elastic element and wedge block, and the component that fastens includes interior metal gasket, outer metal gasket, carrier bar and screw；The sealing mechanism includes that rubber matrix, inner metal skeleton, outside metallic framework and the main lip of sealing, secondary lip and dustproof lip, the dustproof lip are located at fluid low-pressure side.Throw-out collar is close in one end of the elastic element, and the other end is arranged in wedge block；The wedge block inner conical surface is close to rubber matrix and generates micro- sliding；The flexible sheet is fixed on the medial and lateral metallic framework, and is fitted closely on throw-out collar by being acted on generating to be squeezed and deformed by sealing-fluid pressure；The inner metal skeleton is connected using carrier bar with outside metallic framework and realizes axially position.

Description

A kind of adaptive transformation operating mode type assembly type rubber sealing structure
Technical field
The present invention relates to Contoured squeeze type design of Sealing Structure technical fields, and in particular to a kind of adaptive transformation operating mode type Assembly type rubber sealing structure, especially suitable for becoming sealing-fluid pressure or in the rubber and plastic dynamic sealing device of high pressure operating condition.
Background technique
The sealing of Contoured squeeze type is used as a kind of typical rubber and plastic moving sealing element, it relies on natural resiliency recoverable force energy Power tightly touch sealing coupled face gap, cuts off leakage path or increases the resistance of leakage path, to reach reduction or prevention The purpose of fluid leakage, is widely used in the rotations such as ship, automobile, aircraft, engineering machinery or the sealing of reciprocating machine.With The fast development of modern industry and aerospace, it is desirable that dynamic sealing device can be applicable in the sealed environments such as high parameter, variable working condition, and protect Demonstrate,prove reliability and service life with higher.Currently, the Contoured squeeze type sealing structure of developmental research both at home and abroad is commonly stream Body pressure, which acts directly in rubber seal, to be achieved the purpose that radial compression deformation and realizes sealing, but often there is sealing deformation It is uncontrollable and cause a certain position of sealing ring that stress occurs and concentrate, or even the phenomenon that be torn destruction.In addition, in high pressure or transformation Under operating condition, due to rubber packing material nonlinear characteristic and make seal radial-deformation design controllability it is poor, thus Sealing ring is caused easily to wear due to sealing ring radial-deformation excessive (sealing coupling surface contact pressure is bigger than normal) in engineering, Or sealing ring radial-deformation it is too small and cause seal the too small direct seal failure event leaked of coupled face resistance also when There is generation.
Summary of the invention
The present invention will overcome the disadvantages mentioned above of the prior art, provide one kind and be able to achieve sealing radial compression amount with sealing fluid The rubber movable sealing structure of the high reliability for the automatic adaptation transformation operating condition that pressure change controllably designs.
The technical scheme is that
A kind of adaptive transformation operating mode type assembly type rubber sealing structure, including it is located at sealed medium side or fluid high-pressure The adaptive variable working condition thrust hold-down mechanism and sealing mechanism of side；It is characterized by: the adaptive variable working condition thrust compacting machine Structure includes fastening component, flexible sheet 11, throw-out collar 12 and elastic element 3, wedge block 4, and the component that fastens includes interior Metal gasket 9, outer metal gasket 14, carrier bar 10 and screw 13；The sealing mechanism includes rubber matrix 1, outside metallic framework 2, inner metal skeleton 8 and the main lip 7 of sealing, secondary lip 6 and dustproof lip 5, the dustproof lip 5 are located at fluid low-pressure side；The rubber 1 outside diameter of matrix body is in axial direction uniformly provided with evagination annulus 15；The inner conical surface of the wedge block 4 is close to rubber matrix 1 And micro- sliding is in axial direction generated, the wedge block 4 is along the circumferential direction uniformly provided on the bottom surface of fluid high-pressure side Blind hole, arrangement has elastic component 3 in each blind hole；The elastic element 3 is close to push away by the bottom surface of fluid high-pressure side one end 12 side bottom surface of ring, 12 other side bottom surface of throw-out collar with acted on by Fluid pressure after the flexible sheet 11 that is squeezed and deformed closely paste It closes；The flexible sheet 11 is along the circumferential direction uniformly provided with through-hole in internal side diameter and outside diameter respectively, and utilizes and fasten group Part is fixed on the inner metal skeleton 8 and outside metallic framework 2；The inner metal skeleton 8 and outside metallic framework 2 lean on Fluid high-pressure side bottom surface is vertical with axial direction and flush with each other smooth flat, and along the circumferential direction equal in smooth flat It is even to offer tapped blind hole；The interior metal gasket 9 and outer metal gasket 14 are along the circumferential direction uniformly provided with through-hole；The chain The bottom shape of plate 10 is endless track, and both ends offer through-hole；First screw 13a sequentially passes through 10 1 side through hole of carrier bar, outer Through-hole, the through-hole of 11 outside diameter of flexible sheet and the tapped blind hole of outside metallic framework 2 of metal gasket 14 and realize elastic membrane The fixation of 11 outer diameter side of piece, the second screw 13b sequentially pass through another side through hole of carrier bar 10, the through-hole of interior metal gasket 9, elasticity The through-hole of 11 internal side diameter of diaphragm and the tapped blind hole of inner metal skeleton 8 and the fixation for realizing 11 internal diameter side of flexible sheet；Institute It states inner metal skeleton 8 and outside metallic framework 2 and axially position is realized using the connection of carrier bar 10.
Further, the flexible sheet 11 and can be pushed away using rubber, polytetrafluoroethylene (PTFE), metal as diaphragm material The one side of ring contact is smooth flat or dimpling dignity, and the thickness range of the flexible sheet is 0.25~5mm.
Further, elastic element (3) is one of spring, metal bellows, rubber bellows, polytetrafluoroethylbellows bellows.
Further, the cross sectional shape of evagination annulus (15) is one of arc-shaped, sinusoidal, rectangle, trapezoidal.
Further, number N=3~12 of the carrier bar 10.
It is applicable to rotate using the automatic transformation operating mode type assembly type rubber sealing structure that adapts to of one kind of the present invention Mechanical or reciprocating machine.
The working principle of the invention:
Automatic adaptation transformation operating condition assembly type rubber sealing structure provided by the invention, including be located at sealed medium side or The adaptive variable working condition thrust hold-down mechanism and sealing mechanism of fluid high-pressure side.Wherein, adaptive variable working condition thrust hold-down mechanism Including fastening component, flexible sheet, throw-out collar, elastic element and wedge block, component is fastened mainly by interior metal gasket, outer Metal gasket, carrier bar and screw etc. composition, sealing mechanism include rubber matrix, inner metal skeleton, outside metallic framework and Seal main lip, secondary lip and dustproof lip.The number of carrier bar is generally 3 or more, plays fixed inner metal skeleton and outside gold The effect for belonging to skeleton (preventing inner metal skeleton stress from moving axially), can guarantee that flexible sheet internal diameter and outer diameter are in same always In one plane.For the reliability for guaranteeing precharge procedure seals, rubber seal guarantees small pre compressed magnitude in initial installation. When pressurization, under the action of by sealing-fluid pressure, rubber film sector-meeting deforms and throw-out collar is pushed to transport toward fluid low-pressure side It is dynamic, and elastic element is squeezed that compressive deformation can occur, and pushes wedge block close along rubber by its own deformation resilience Seal generates micro- sliding, and the axial elastic force of elastic element is converted to the radial compression to rubber seal, to reach envelope Firmly seal the purpose in coupled face gap.Under transformation working condition, when smaller by sealing-fluid pressure or high-pressure side Fluid pressure When, the compression deformation of elastic element is smaller, and the radial compression amount of rubber seal is smaller, but since wedge block displacement is drawn The radial compression risen can be directly delivered on main lip and secondary lip, therefore sealing ring is in the compressive deformation of initial interference and major and minor lip Under can still realize sealing；When larger by sealing-fluid pressure, the compression deformation of elastic element and the radial direction of rubber seal Decrement is larger, and major and minor lip is tightly touched coupling surface by deformation, and sealing area contact length is elongated, and frictional force increases with it, But since radial-deformation is by the control of elastic element rigidity, therefore frictional force is still wanted compared with the direct acting type sealing of conventional fluid pressure It is small.Under high pressure, by the reasonable setting to elastic element rigidity, it can be achieved that sealing ring is the case where meeting seal request Under, seal area contact pressure is smaller, so that the effect for reducing frictional force, reducing abrasion probability is realized, especially in high-speed condition Under it is the most obvious.Meanwhile main lip and the secondary dual lip configuration of lip and the design of dustproof lip, make the reliability and validity of sealing It has obtained improving energetically；In addition, sealing ring radial compression amount still may be used under the action of Fluid pressure when sealing ring is worn Automatically it is compensated, to ensure the reliability operation of sealing, realizes real-time adaptive variable working condition type sealing effect.
In addition, flexible sheet can be full rubber material diaphragm, or with the rubber or resinous material diaphragm for enhancing skeleton, or For high-intensitive, high rigidity metallic membrane, the requirements such as the property difference according to sealed medium are selected.Wherein, band enhancing skeleton Flexible sheet internal diameter and outer diameter fixed part be metal or high molecular material, centre by fluid pressure squeezes deformed part still For rubber material or resin type material (such as: polytetrafluoroethylene (PTFE) etc.).It can guarantee flexible sheet internal diameter and outer diameter two sides in this way Fixation, the centre that can also targetedly control flexible sheet is deformation side of the part after by fluid compression of rubber material When to, deformation direction after rubber compression with axial direction being main, it can realize that flexible sheet axially pushes throw-out collar mobile Quick response.
Beneficial effects of the present invention are mainly manifested in:
The present invention has abandoned Fluid pressure in traditional Contoured squeeze type sealing structure and has acted directly on sealing ring and realize The thought for sealing radial compression fitting coupled face, realizes the controllable design of sealing radial compression amount, improves sealing structure pair The adaptability of Fluid pressure has many advantages, such as good seal performance, wear-resistant, high reliablity and long service life, can preferably meet Current requirement of the Seal Design under high pressure and transformation work condition environment.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 a is the structural schematic diagram of carrier bar of the invention；Fig. 2 b is the sectional view along A-A of Fig. 2 a.
Fig. 3 is the schematic diagram of flexible sheet of the invention, and Fig. 3 a is Fig. 3 when flexible sheet is using full rubber material B-B direction cross-sectional view；Fig. 3 b is the B-B direction cross-sectional view of Fig. 3 when flexible sheet is used with enhancing skeletal composite.
Fig. 4 a is the schematic diagram of wedge block of the invention, and Fig. 4 b is the diagrammatic cross-section of wedge block.
Fig. 5 is the structural schematic diagram of interior metal gasket of the invention.
Fig. 6 is the structural schematic diagram of outer metal gasket of the invention.
Fig. 7 is the structural schematic diagram of throw-out collar of the invention.
Fig. 8 a is the schematic cross-section of flexible sheet (with micro-bulge annulus) of the invention, and Fig. 8 b is putting for the portion C of Fig. 8 a Big figure.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawing.
The meaning of appended drawing reference in Figure of description is as follows:
1- rubber matrix；Metallic framework on the outside of 2-；3- elastic element；4- wedge block；5- dustproof lip；6- pair lip；7- master Lip；8- inner metal skeleton；Metal gasket in 9-；10- carrier bar；11- flexible sheet；12- throw-out collar；The first screw of 13a-；13b- Second screw；The outer metal gasket of 14-；15- evagination annulus；111- vulcanized rubber；112- enhances skeleton；113- micro-bulge annulus.
Referring to figs. 1 to shown in Fig. 8 b, a kind of adaptive transformation operating mode type assembly type rubber sealing structure, including be located at close Seal the adaptive variable working condition thrust hold-down mechanism and sealing mechanism of side medium or fluid high-pressure side；It is characterized by: described adaptive Answering variable working condition thrust hold-down mechanism includes fastening component, flexible sheet 11, throw-out collar 12 and elastic element 3, wedge block 4, institute Stating and fastening component includes interior metal gasket 9, outer metal gasket 14, carrier bar 10 and screw 13；The sealing mechanism includes rubber Matrix 1, outside metallic framework 2, inner metal skeleton 8 and the main lip 7 of sealing, secondary lip 6 and dustproof lip 5, the dustproof lip 5 are located at Fluid low-pressure side；1 outside diameter of rubber matrix is in axial direction uniformly provided with evagination annulus 15；The wedge block 4 it is interior The conical surface is close to rubber matrix 1 and in axial direction generates micro- sliding, and the wedge block 4 is on the bottom surface of fluid high-pressure side along circle Circumferential direction is uniformly provided with blind hole, and arrangement has elastic component 3 in each blind hole；The elastic element 3 leans on fluid high-pressure side The bottom surface of one end is close to 12 side bottom surface of throw-out collar, 12 other side bottom surface of throw-out collar with acted on by Fluid pressure after be squeezed and deformed Flexible sheet 11 fits closely；The flexible sheet 11 is along the circumferential direction uniformly provided with logical respectively in internal side diameter and outside diameter Hole, and be fixed on the inner metal skeleton 8 and outside metallic framework 2 using component is fastened；The inner metal skeleton 8 Leaning on fluid high-pressure side bottom surface with outside metallic framework 2 is vertical with axial direction and flush with each other smooth flat, and smooth Tapped blind hole is along the circumferential direction uniformly provided in plane；The interior metal gasket 9 and outer metal gasket 14 are along the circumferential direction equal It is even to offer through-hole；The bottom shape of the carrier bar 10 is endless track, and both ends offer through-hole；First screw 13a is successively worn Cross the spiral shell of 10 1 side through hole of carrier bar, the through-hole of outer metal gasket 14, the through-hole of 11 outside diameter of flexible sheet and outside metallic framework 2 Line blind hole and the fixation for realizing 11 outer diameter side of flexible sheet, the second screw 13b sequentially pass through another side through hole of carrier bar 10, interior gold Belong to through-hole, the through-hole of 11 internal side diameter of flexible sheet and the tapped blind hole of inner metal skeleton 8 of gasket 9 and realizes flexible sheet 11 The fixation of internal diameter side；The inner metal skeleton 8 and outside metallic framework 2 are using the connection realization axially position of carrier bar 10.
The flexible sheet 11 can be contacted using rubber, polytetrafluoroethylene (PTFE), metal as diaphragm material with throw-out collar It is on one side smooth flat, dimpling dignity, the thickness range of the flexible sheet is 0.25~5mm.
The elastic element 3 is spring, metal bellows, rubber bellows, polytetrafluoroethylbellows bellows.
The cross sectional shape of evagination annulus 15 is arc-shaped, sinusoidal, rectangle, trapezoidal.
Number N=3~12 of the carrier bar 10.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention also includes art technology Personnel conceive according to the present invention it is conceivable that equivalent technologies mean.

Claims (5)

1. a kind of adaptive transformation operating mode type assembly type rubber sealing structure, the adaptive variable working condition including being located at fluid high-pressure side Thrust hold-down mechanism and sealing mechanism, it is characterised in that: the adaptive variable working condition thrust hold-down mechanism include fasten component, Flexible sheet (11), throw-out collar (12), elastic element (3) and wedge block (4), the component that fastens includes interior metal gasket (9), outer metal gasket (14), carrier bar (10) and screw (13)；The sealing mechanism includes rubber matrix (1), outside metal bone Frame (2), inner metal skeleton (8) and the main lip (7) of sealing, secondary lip (6) and dustproof lip (5), the dustproof lip (5) are located at fluid Low-pressure side；Rubber matrix (1) outside diameter is in axial direction uniformly provided with evagination annulus (15)；The wedge block (4) Inner conical surface is close to rubber matrix (1) and in axial direction generates micro- sliding, and the wedge block (4) leans on the bottom surface of fluid high-pressure side On be along the circumferential direction uniformly provided with blind hole, arrangement has elastic component (3) in each blind hole；The elastic element (3) is leaned on Throw-out collar (12) side bottom surface is close in the bottom surface of fluid high-pressure side one end, and throw-out collar (12) other side bottom surface is made with by Fluid pressure It is fitted closely with the flexible sheet (11) of rear extrusion deformation；The flexible sheet (11) is distinguished circumferentially in internal side diameter and outside diameter Direction is uniformly provided with through-hole, and is fixed on the inner metal skeleton (8) and outside metallic framework (2) using component is fastened On；It is and phase vertical with axial direction that the inner metal skeleton (8) and outside metallic framework (2), which lean on fluid high-pressure side bottom surface, Mutually concordant smooth flat, and tapped blind hole is along the circumferential direction uniformly provided in smooth flat；The interior metal gasket (9) and Outer metal gasket (14) is along the circumferential direction uniformly provided with through-hole；The bottom shape of the carrier bar (10) is endless track, both ends Offer through-hole；First screw (13a) sequentially passes through (10) one side through hole of carrier bar, the through-hole of outer metal gasket (14), elastic membrane The through-hole of piece (11) outside diameter and the tapped blind hole of outside metallic framework (2) and realize consolidating for flexible sheet (11) outer diameter side Fixed, the second screw (13b) sequentially passes through in another side through hole of carrier bar (10), the through-hole of interior metal gasket (9), flexible sheet (11) The through-hole of diameter side and the tapped blind hole of inner metal skeleton (8) and the fixation for realizing flexible sheet (11) internal diameter side；In described Side metallic framework (8) and outside metallic framework (2) are using carrier bar (10) connection realization axially position.
2. a kind of adaptive transformation operating mode type assembly type rubber sealing structure as described in claim 1, it is characterised in that: described For flexible sheet (11) using rubber, polytetrafluoroethylene (PTFE), metal as diaphragm material, the one side contacted with throw-out collar is smooth flat Or dimpling dignity, the thickness range of the flexible sheet are 0.25~5mm.
3. a kind of adaptive transformation operating mode type assembly type rubber sealing structure as claimed in claim 2, it is characterised in that: described Elastic element (3) is one of spring, metal bellows, rubber bellows, polytetrafluoroethylbellows bellows.
4. a kind of adaptive transformation operating mode type assembly type rubber sealing structure as claimed in claim 3, it is characterised in that: described The cross sectional shape of evagination annulus (15) is one of arc-shaped, sinusoidal, rectangle, trapezoidal.
5. a kind of adaptive transformation operating mode type assembly type rubber sealing structure as claimed in claim 4, it is characterised in that: described Number N=3~12 of carrier bar (10).
CN201710721909.XA 2017-08-22 2017-08-22 A kind of adaptive transformation operating mode type assembly type rubber sealing structure Active CN107504186B (en)

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CN107504186B true CN107504186B (en) 2019-02-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111677865A (en) * 2020-06-12 2020-09-18 东台市岳东橡胶密封件厂 Micro-motion type sealing element
CN112212008B (en) * 2020-09-03 2022-07-15 广州机械科学研究院有限公司 Pressure self-adaptive rotary sealing device
CN113623397B (en) * 2021-08-23 2023-06-16 中国计量大学 Pressure self-adaptive rubber sealing structure
CN115217976B (en) * 2022-07-22 2024-05-10 西安近代化学研究所 Radial sealing device suitable for circular cross section polytetrafluoroethylene sealing washer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2402114A (en) * 1943-03-11 1946-06-11 Clair Camille Clare Sprankl Le Flexible packing or sealing ring
DE3631887C1 (en) * 1986-09-19 1988-02-04 Goetze Ag Lip sealing ring
EP1881243A1 (en) * 2006-07-19 2008-01-23 Carl Freudenberg KG Radial shaft seal with pressure regulation mechanism
CN106907485A (en) * 2017-04-28 2017-06-30 嘉兴学院 A kind of pressure adaptive lip shape seal device
CN207333707U (en) * 2017-08-22 2018-05-08 浙江工业大学 A kind of adaptive transformation operating mode type assembly type rubber sealing structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2402114A (en) * 1943-03-11 1946-06-11 Clair Camille Clare Sprankl Le Flexible packing or sealing ring
DE3631887C1 (en) * 1986-09-19 1988-02-04 Goetze Ag Lip sealing ring
EP1881243A1 (en) * 2006-07-19 2008-01-23 Carl Freudenberg KG Radial shaft seal with pressure regulation mechanism
CN106907485A (en) * 2017-04-28 2017-06-30 嘉兴学院 A kind of pressure adaptive lip shape seal device
CN207333707U (en) * 2017-08-22 2018-05-08 浙江工业大学 A kind of adaptive transformation operating mode type assembly type rubber sealing structure

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