KR20130109538A - Multi-layer composite seals with multiple contacts - Google Patents

Multi-layer composite seals with multiple contacts Download PDF

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Publication number
KR20130109538A
KR20130109538A KR1020120031324A KR20120031324A KR20130109538A KR 20130109538 A KR20130109538 A KR 20130109538A KR 1020120031324 A KR1020120031324 A KR 1020120031324A KR 20120031324 A KR20120031324 A KR 20120031324A KR 20130109538 A KR20130109538 A KR 20130109538A
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South Korea
Prior art keywords
elastic body
annular
annular elastic
composite seal
contact
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KR1020120031324A
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Korean (ko)
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김청균
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김청균
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Priority to KR1020120031324A priority Critical patent/KR20130109538A/en
Publication of KR20130109538A publication Critical patent/KR20130109538A/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
    • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
    • 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
    • F16J15/3268—Mounting of sealing 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
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/907—Passageway in rod or shaft

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

Abstract

The present invention is a multilayer in which an intermediate annular elastic body is integrally molded on the outer surface of a central annular elastic body formed on the central axis, and an outer surface of the intermediate annular elastic body is laminated and molded integrally with a shell-divided (or sheath-linked) annular elastic body. Composite seal of the structure. The axial direction of the high-pressure working fluid is formed on the outermost contact surface of the multi-contact multi-layer composite seal by forming a multi-contact shape of a protruding annular portion, which is naturally divided in both directions, by a plurality of semicircular grooves formed along the circumferential direction at 90 ° intervals. Alternatively, the present invention relates to a multi-contact multilayer composite seal capable of completely blocking radial leakage, excellent compressive deformation behavior stability, and effectively suppressing extrusion and distortion deformation behavior due to leakage pressure.
Since the present invention forms a plurality of annular elastic bodies having an annular cross-section so as to overlap each other, and then integrally forms a band, the overall cross-sectional shape is formed as a rectangular annular band, and a semicircular groove formed along the outermost circumferential direction of the annular band. And protruding annular part can generate high sealing force in narrow installation space to prevent leakage of high pressure working fluid while contacting the surface of the square groove, and form a plurality of annular elastic bodies with different elastic contact behavior in a stack. The present invention relates to a multi-contact multi-layer composite seal having a structure in which the elastic force formed from the high contact surface pressure formed from the outermost surface is harmonized with each other and the sealability and the deformation behavior durability are stably secured.

Description

Multi-layer composite seals with multiple contacts

The present invention relates to a multi-contact multi-layer composite seal which is assembled to a square groove formed on the surface of a shaft diameter or a flange structure to block the leakage of fluid, and more specifically, another intermediate ring on the outer surface of the central annular elastic body formed on the central axis. It is a composite seal of a multilayer structure in which an elastic body is molded to be integrally laminated, and another shell-divided (or skin-linked) annular elastic body is integrally laminated and molded on the outer surface of the intermediate annular elastic body. In the outermost contact surface of the multi-contact multilayer composite seal, the multi-contact shape of the protruding annular portion, which is naturally divided by both sides, is formed by a plurality of semicircular grooves formed along the circumferential direction at intervals of 90 ° so that the axial direction of the working fluid or The present invention relates to a multi-contact multilayer composite seal capable of completely blocking radial leakage, excellent stability of compression deformation behavior, and effectively suppressing extrusion and distortion deformation behavior due to leakage pressure.

Since the present invention forms a plurality of annular elastic bodies having an annular cross-section so as to overlap each other, and then integrally forms a band, the overall cross-sectional shape is formed as a rectangular annular band, and a semicircular groove formed along the outermost circumferential direction of the annular band. And protruding annular part can generate high sealing force in narrow installation space to prevent leakage of high pressure working fluid while contacting the surface of the square groove, and form a plurality of annular elastic bodies with different elastic contact behavior in a stack. The present invention relates to a multi-contact multi-layer composite seal having a structure in which the elastic force formed from the high contact surface pressure formed from the outermost surface is harmonized with each other and the sealability and the deformation behavior durability are stably secured.

Conventional elastomeric seals, such as O-rings, have secured a sealing force by elastic repulsion force generated by inserting a rectangular groove formed at one end of a pressure vessel or a moving part structure to block external leakage of the working fluid. Particularly, if the high pressure working fluid is to be blocked by O-rings, it is solved by arranging several grooves in a row, but the installation space increases, and when one O-ring leaks, the neighboring O-rings also have a time difference. Therefore, there was a limit to blocking the leakage of the working fluid.

In addition, when an elastic seal of a circular shape, such as an O-ring, is assembled in a square groove and the internal pressure of the working fluid is increased, an O-ring is fatigue-damaged because an extrusion phenomenon is caused to squeeze out of the O-ring in the direction in which the internal pressure is applied. At the same time, the O-ring itself is damaged by the twisting deformation, and the O-ring is damaged, and the durability of the O-ring gradually decreases.

Accordingly, the present invention has been made to solve the conventional problems as described above, the object is to completely block the high-pressure working fluid to leak along the axial or radial direction, and to ensure durability will be.

In order to increase the contact surface pressure and durability for sealing, and to prevent the extrusion deformation or the distortion deformation, the annular elastic body composed of the multi-contact multi-layer composite seal is composed of the central, middle and outer layers, but is always laminated in one body. If the elastic force and hardness difference of the elastic material is properly adjusted with the annular elastomer injection structure, the elastic repulsion sealing force and durability can be greatly improved.

In addition, the damage caused by the extrusion deformation and distortion deformation caused by the internal pressure of the working fluid acting on the O-ring, and the surface of the O-ring is circular and smooth due to the warping phenomenon are damaged. Accordingly, the multi-contact multi-layer compound seal, which has a plurality of semicircle grooves formed at regular intervals, can be solved by assembling the square grooves formed on the shaft and the surface of the cylinder structure.

In order to achieve the object of the present invention, the multi-contact multi-layer composite seal for completely blocking the working fluid to leak along the axial or radial direction is composed of an annular elastic body of the center, middle, and outer layer, Due to the lamination and molding of the body, the elastic repulsion sealing force and durability due to the different elastic properties and hardness difference of the annular elastic body can be improved.

In addition, since a plurality of semicircular grooves are formed at regular intervals along the circumferential direction of the outermost layer of the multi-layer composite seal, a plurality of projecting annular portions naturally formed on both sides of the semicircular groove are pressed into the axial groove of the shaft and the surface of the cylinder structure. The multi-layered composite seal has a characteristic that the sealing contact surface is increased, and in particular, if the hardness of the elastic body forming the outermost layer is further increased, excessive extrusion deformation and distortion deformation can be suppressed, so that the sealing property is increased and the service life is extended.

According to the present invention, another mesocyclic elastomer is integrally laminated and molded on the outer surface of the central annular elastomer formed on the central axis in a split or connected multi-contact multilayer composite seal, and the outer shell of the intermediate annular elastomer is further divided. A split or splicing elastomer composite structure in which a mold (or outer shell) annular elastic body is laminated and molded into one body, and the elastic repulsive force and deformation behavior differ depending on the material properties and the thickness of the laminated body between the inner elastic body and the outermost elastic body. Since the elastic contact surface pressure and deformation behavior stability of the multi-layer composite seal are different, the sealing and durability can be expected to be greatly improved.

In addition, in the outermost part of the split or connected multi-contact multi-layer composite seal, a plurality of semicircular grooves are formed along the circumferential direction so that a protruding annular portion formed naturally on both sides of the semicircular grooves has a square groove and a cylinder structure of the shaft. The sealing force is increased due to the high contact surface pressure generated when contacting at various places, i.e. multi-contacting, and even if the high internal pressure of the sealing fluid acts on this multi-layer composite seal, it does not cause damage due to extrusion deformation and torsional deformation. Excellent effect can be expected.

1 is a cross-sectional view of an existing O-ring.
Figure 2 is a perspective view of a divided multi-contact multilayer composite seal according to the present invention.
Figure 3 is a perspective view of a divided multi-contact multi-layer composite seal showing a first embodiment of the present invention.
Figure 4 is a perspective view of a connected multi-contact multi-layer composite seal showing a second embodiment of the present invention.
5 is a perspective view of a connected multi-contact multi-layer composite seal showing a third embodiment of the present invention.
Figure 6 is a perspective view of a multi-contact double compound seal showing a fourth embodiment of the present invention.
Figure 7 is a perspective view of a multi-layer composite seal according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the conventional O-ring 10 is assembled to a square groove 12 formed on the outer diameter surface of the shaft 11, and the outer diameter side of the O-ring 10 is the inner diameter side of the cylinder structure 13. Seal the high-pressure fluid to leak in the axial direction by the elastic repulsive force generated in the process of being compressed.

2 is a perspective view showing the appearance of the divided multi-contact multilayer composite seal according to the present invention, as shown in the central axis of the divided multi-contact multilayer composite seal 100 to form a central annular elastic body 20, The intermediate annular elastic body 21 is integrally molded so as to contact the outer diameter portion of the central annular elastic body 20, and the thin outer shell divided annular elastic bodies 22 and 22 are in contact with the outer diameter portion of the intermediate annular elastic body 21. ') Is divided into two upper and lower parts and has a multi-layered composite seal type having a multi-layer structure formed in one piece.

In addition, a plurality of semi-circular grooves 23 and 23 'are formed at the outermost outer diameter portion 90 degrees along the circumferential direction of the divided multi-contact multi-layer compound seal 100, and the semi-circular grooves 23 and 23' Protruding annular portions (24, 24 ') formed at both corners in the form of a multi-contact split seal type configured to contact and seal the inner surface of the square groove (12) and the inner diameter surface of the cylinder structure (13) In addition, the high elastic repulsive force generated at each contact surface can completely block the leakage of high pressure fluid.

In another example, the hollow annular elastic body 26 is formed by forming the central axis of the divided multi-contact multilayer composite seal 100 into the hollow 25, and has a thin thickness so as to contact the outer diameter portion of the hollow annular elastic body 26. Outer shell split annular elastic bodies 22 and 22 'are separated into two pieces at the top and bottom, and integrally formed, and a plurality of outer split outer annular elastic bodies 22 and 22' are disposed at 90 ° intervals along the circumferential direction of the outer shell split annular elastic bodies 22 and 22 '. Two semicircular grooves 23 and 23 ', and protruding annular portions 24 and 24' are formed at both corners of the semicircular grooves 23 and 23 'to further increase elastic resilience flexibility and deformation behavior stability. have.

In another example, the outer shell portion of the thin multi-contact multi-layer composite seal 100 is formed to form an annular elastic body 27 filled with an elastic body and contact the outer diameter portion of the annular elastic body 27. A plurality of semi-circular grooves are formed by separating the annular elastic bodies 22 and 22 'into two upper and lower parts and integrally forming the annular elastic bodies 22 and 22' at 90 ° intervals along the outer circumference of the outer annular elastic members 22 and 22 '. 23, 23 ') and a structure in which the protruding annular portions 24, 24' are formed at both corners of the semicircular grooves 23, 23 ', so that the manufacturing force is simple.

Figure 3 is a perspective view of a divided multi-contact multilayer composite seal showing a first embodiment according to the present invention, as shown in the present invention has two centers along the central axis of the divided multi-contact multilayer composite seal 100 The annular elastic bodies 20 and 20 'are formed adjacent to each other, and one intermediate annular elastic body 21 is integrally molded to contact the outer diameter portion of the central annular elastic bodies 20 and 20', and the intermediate annular elastic body 21 is formed. It is a split type composite seal type having a multi-layered structure in which the thin shell-shaped annular elastic bodies 22 and 22 'having a thin thickness are formed into two pieces at the top and bottom to be in contact with the outer diameter portion thereof.

In addition, two semicircular grooves 23, 23 ', 23' 'are formed on the upper and lower sides and the left and right sides of the outermost outer diameter portion along the circumferential direction of the divided multi-contact multilayer composite seal 100, respectively. The protruding annular portions 24, 24 'formed at both edges of the grooves 23, 23', 23 " contact and seal the inner surface of the square groove 12 and the inner surface of the cylinder structure 13 at various places. In the form of a split-type composite seal with a multi-contact structure, the leakage of ultra-high pressure fluid can be completely blocked by the high elastic repulsion force generated at each contact surface.

In another example, the hollow annular elastic body 26 in which two hollows 25 and 25 'are adjacently formed along the central axis of the divided multi-contact multilayer composite seal 100 is formed, and the hollow annular elastic body 26 is formed. Thin outer shell split annular elastic bodies 22 and 22 'are formed into two pieces by forming two pieces of upper and lower parts so as to be in contact with the outer diameter of the upper and lower parts along the circumferential direction of the outer shell split annular elastic bodies 22 and 22'. Two semicircular grooves 23, 23 ', and 23' 'are formed at the top and bottom of the outer diameter portion, and left and right sides, respectively, and protruding annular portions are formed at both corners of the semicircular grooves 23, 23', 23 ''. 24, 24 ') can greatly increase the elastic resilience and deformation behavior stability.

In another example, the outer shell portion of the thin multi-contact multi-layer composite seal 100 is formed to form an annular elastic body 27 filled with an elastic body and contact the outer diameter portion of the annular elastic body 27. The annular elastic bodies 22 and 22 'are separated into two upper and lower parts and molded into one piece, and two upper and lower outer diameter parts along the circumferential direction of the outer annular elastic members 22 and 22', and one on the left and right sides. Semicircular grooves 23, 23 ', 23' 'are formed respectively, and protruding annular portions 24, 24' are formed at both edges of the semicircular grooves 23, 23 ', 23' ', so the sealing force is increased. The installation space is greatly reduced compared to the greatly increased.

4 is a perspective view of a connection type multi-contact multi-layer composite seal according to a second embodiment of the present invention. Here, the characteristic difference from FIG. 2 is that the thin outer thickness of the outer annular elastic body 28 which is in contact with the outer diameter portion of the intermediate annular elastic body 21 is molded so as not to be separated into two but continues as one, and the outer annular elastic body 28 is connected. A plurality of semicircular grooves 23 and 23 'are formed at the outermost outer diameter portions 90 degrees along the circumferential direction of the protrusions, and protruding annular portions 24 and 24' are formed at both corners of the semicircular grooves 23 and 23 ', respectively. ) Is a connection type multi-contact multi-layer composite seal 110 having a structure in which the elastic force generated in the vicinity of the protruding annular portions 24 and 24 'is more uniform.

In another example, the hollow annular elastic body 26 is formed by forming the central axis of the connection-type multi-contact multilayer composite seal 110 into the hollow 25, and the shell-connected annular body is in contact with the outer diameter portion of the hollow annular elastic body 26. A plurality of semicircular grooves 23 and 23 are formed so that the thin outer shell thickness of the elastic body 28 is not separated into two but continues as one, and the outer outer diameter portion is spaced at 90 ° along the circumferential direction of the outer shell-shaped annular elastic body 28. ') Are formed, respectively, and protruding annular portions 24 and 24' are formed at both edges of the semicircular grooves 23 and 23 ', thereby improving elastic resilience flexibility and deformation behavior stability.

In another example, all of the central axes of the connection-type multi-contact multilayer composite seal 110 are molded into an annular elastic body 27 filled with an elastic body, and the shell-connected annular elastic body 28 is in contact with an outer diameter portion of the annular elastic body 27. It is molded so that the thin outer shell thickness of the film is not separated into two, but continues into one, and each of the plurality of semicircular grooves 23 and 23 'is spaced 90 degrees apart from the outermost outer diameter portion along the circumferential direction of the shell-connected annular elastic body 28, respectively. It is formed, and the manufacturing process is simple compared to the sealing force is increased in the structure in which the protruding annular portion (24, 24 ') is formed on both corners of the semi-circular groove (23, 23').

FIG. 5 is a perspective view showing a connected multi-contact multilayer composite seal according to a third embodiment of the present invention. As shown in FIG. 5, the present invention provides two central annular elastomers along the central axis of the connected multi-contact multilayer composite seal 110. (20,20 '), one intermediate annular elastic body 21 is integrally molded so as to be in contact with the outer diameter portion of the central annular elastic body 20, 20', and the outer diameter portion of the intermediate annular elastic body 21 is formed. A thin outer skin-connected annular elastic body 28 is formed into a single body and then integrally formed so as to be in contact with each other. (23, 23 ', 23' '), respectively, and connected multi-contact multilayer composite having a structure in which protrusion annular portions (24, 24') are formed at both corners of the semicircular grooves (23, 23 ', 23' '). With seal 110, occurring near protruding annular portions 24, 24 ′ Has a large elastic reaction force becomes uniform characteristics.

In another example, the hollow annular elastomer 26 formed with two hollows 25 and 25 'adjacent to each other along the central axis of the connected multi-contact multilayer composite seal 110 is formed, and the hollow annular elastomer 26 is formed. Shaped so that the outer skin thickness of the outer ring-shaped annular body 28 is in contact with the outer diameter portion to be connected to one, two along the circumferential direction of the outer shell-shaped annular elastic body 28 in the upper and lower parts of the outermost outer diameter, and one left and right Semi-circular grooves (23, 23 ', 23' ') are formed, respectively, and the resilient resilience flexibility with a structure in which protruding annular portions (24, 24') are formed at both edges of the semi-circular grooves (23, 23 ', 23' '). And the stability of deformation behavior can be greatly increased.

In another example, all of the central axes of the connection-type multi-contact multilayer composite seal 110 are molded into an annular elastic body 27 filled with an elastic body, and the shell-connected annular elastic body 28 is in contact with an outer diameter portion of the annular elastic body 27. Molded to have a thin outer shell thickness of one, and two semicircular grooves (23, 23 ', 23' ') on the upper and lower sides of the outermost outer diameter portion and the left and right sides along the circumferential direction of the outer annular elastic body (28). And respectively, and the installation space is greatly reduced compared to the sealing force is increased by the structure in which the protruding annular portions 24 and 24 'are formed at both corners of the semicircular grooves 23, 23' and 23 ''.

6 is a perspective view of a multi-contact double-composite seal showing a fourth embodiment according to the present invention, as shown in the present invention is one intermediate annular elastic body 21 to contact the outer diameter portion of the central annular elastic body 20 ) Is integrally formed, and a plurality of semicircular grooves 23 and 23 'are formed in the outermost outer diameter portion along the circumferential direction of the intermediate annular elastic body 21, and both edges of the semicircular grooves 23 and 23' are formed. The resilient contact surface pressure is increased by the multi-contact double-composite seal 120 having a structure in which the protruding annular portions 24 and 24 'are formed.

As another example, the hollow annular elastic body 26 having the central axis of the multi-contact double-composite seal 120 formed as the hollow 25 is molded, and the outermost diameter portion is formed along the circumferential direction of the hollow annular elastic body 26. Forming a plurality of semi-circular grooves (23, 23 '), and protruding annular portion (24, 24') at both corners of the semi-circular grooves (23, 23 ') to enhance the elastic resilience flexibility and deformation behavior stability It is a multi-contact hollow seal.

In another example, all the central axes of the multi-contact double-composite seal 120 are formed into an annular elastic body 27 filled with an elastic body, and a plurality of semicircular grooves in the outermost outer diameter portion along the circumferential direction of the annular elastic body 27. (23, 23 ') and the manufacturing process is simpler than the multi-contact seal of the structure in which the protruding annular portions (24, 24') are formed on both edges of the semicircular grooves (23, 23 '). Do.

7 is a perspective view showing the appearance of the multi-layer composite seal according to the present invention, as shown in the central axis of the multi-layer composite seal 130 to form a central annular elastic body 20, of the central annular elastic body 20 The intermediate annular elastic body 21 'is integrally molded to be in contact with the outer diameter part, and the thin outer shell connecting annular elastic body 28' is integrally molded to be in contact with the outer diameter part of the intermediate annular elastic body 21 '. Multilayer Composite Seals.

In another example, the hollow annular elastic body 26 'having the central axis of the multilayered composite seal 130 formed into the hollow 25 is molded, and the outer skin of the hollow annular elastic body 26' is formed to be in contact with the outer diameter portion. It is a hollow multi-layer composite seal in which the connecting annular elastic body 28 'is integrally molded to increase elastic resilience flexibility and deformation behavior stability.

In the present invention, the shape of the central annular body, the intermediate annular body, the outer annular elastomer, the hollow annular body, the annular body, the outer annular body, the thickness of these elastic bodies, the shape and number of the semicircular grooves are multi-contact multi-layered composites. Various changes may be made to construct the seal.

The present invention described above is not limited to the structure and operation as shown and described. In other words, the present invention is susceptible to various changes and modifications within the spirit and scope of the appended claims.

10: O-ring 11: Axis
12: square groove 13: cylinder structure
20,20 ': central cyclic elastomer 21,21': intermediate cyclic elastomer
22,22 ': Shell split annular elastomer 23,23', 23 '': Semicircle groove
24,24 ': projecting annular part 25,25': hollow
26,26 ': hollow cyclic elastomer 27: cyclic elastic body
28,28 ': Outer sheathed annular elastomer 100: Split multi-contact multilayer composite seal
110: connected multi-contact multi-layer composite seal 120: multi-contact double composite seal
130: multilayer composite seal

Claims (6)

The intermediate annular elastic body 21 is molded by lamination on the outer diameter portion of the central annular elastic body 20 formed on the central axis, and the thin outer shell divided annular elastic bodies 22, 22 'are formed on the outer diameter portion of the intermediate annular elastic body 21. ) A plurality of protruding annular shapes formed at both corners of each edge while forming a plurality of semicircular grooves (23, 23 ') at 90 ° intervals in the outermost diameter along the circumferential direction of the divided multilayer composite seal formed by separating the two into two pieces. Split multi-contact multi-layer composite seal composed of sections (24, 24 '),
In another example, a multilayer composite seal structure in which a thin outer shell split annular elastic body 22, 22 'is formed into two parts at an outer diameter portion of the hollow annular elastic body 26 having a central axis formed into a hollow 25. Split multi-contact multi-layer composite seals comprising a plurality of projecting annular portions 24, 24 'formed at both corners, respectively, forming a plurality of semi-circular grooves 23, 23' in the outermost portion along the circumferential direction; ,
As another example, the circumferential direction of a multilayer composite seal structure formed by separating two thin outer shell-shaped annular elastic bodies 22 and 22 'into two outer portions of the annular elastic body 27 filled with elastic bodies in both center axes is formed. A multi-layer multi-layer composite seal comprising a plurality of semi-circular grooves (23, 23 ') formed at each corner of the outermost outer portion, respectively, and having a plurality of protruding annular portions (24, 24') formed at both corners. The intermediate annulus elastic body 21 is molded by lamination at the outer diameters of two central annular elastic bodies 20 and 20 'formed adjacent to the center axis, and the outer shell of the intermediate annular elastic body 21 is thinly divided. Two semicircular grooves (23, 23 ', 23') on the upper and lower sides of the outermost outer diameter portion and the left and right sides along the circumferential direction of the divided multilayer composite seal structure in which the annular elastic bodies (22, 22 ') are formed in two. Split multi-contact multi-layer composite seal composed of a plurality of protruding annular portions (24, 24 ') formed at both corners of each other, forming'),
In another example, the thin shell-like annular elastomers 22 and 22 'are separated into two portions at the outer diameter of the hollow annular elastomer 26 formed so that the two hollows 25 and 25' are adjacent along the central axis. A plurality of protrusions are formed at each corner of each corner, forming two semicircular grooves (23, 23 ', 23'') on the upper and lower sides and the left and right sides of the outermost outer diameter portion along the circumferential direction of the multilayer composite seal structure. Split multi-contact multilayer composite seal composed of annular portions 24, 24 ',
As another example, the circumferential direction of a multilayer composite seal structure formed by separating two thin outer shell-shaped annular elastic bodies 22 and 22 'into two outer portions of the annular elastic body 27 filled with elastic bodies in both center axes is formed. Thus, a split consisting of a plurality of protruding annular portions 24, 24 'formed at both corners of the outermost outer diameter, respectively forming two semicircular grooves 23, 23', 23 '' on the left and right sides, respectively. Multi-contact multi-layer composite seal. The outermost outer diameter portion is formed along the circumferential direction of the connecting multilayer composite seal structure in which the central annular elastic body 20, the intermediate annular elastic body 21, and the thin outer shell connecting annular elastic body 28 are formed in a stacked shape while going from the central axis to the outer diameter side. Connected multi-contact multi-layer composite seal composed of a plurality of protruding annular portions (24, 24 ') formed at both corners of each other, forming a plurality of semi-circular grooves (23, 23') at intervals of 90 DEG on each other,
In another example, along the circumferential direction of a connecting multilayer composite seal structure in which a thin outer skin-connected annular elastic body 28 is formed in a laminated shape on the outer diameter portion of the hollow annular elastic body 26 having a central axis formed into a hollow 25. A connection-type multi-contact multi-layer compound seal composed of a plurality of protruding annular portions 24 and 24 'formed at both corners of each other by forming a plurality of semicircular grooves 23 and 23' at 90 ° intervals at the outermost outer diameter portion;
In another example, the outermost edge is formed along the circumferential direction of the connected multilayer composite seal structure in which a thin outer skin-connected annular elastic body 28 is formed in a laminated form on the outer diameter portion of the annular elastic body 27 in which all of its central axes are filled with elastic bodies. Connected multi-contact multi-layer composite seal consisting of a plurality of protruding annular portions (24, 24 ') formed at both corners of each other, forming a plurality of semi-circular grooves (23, 23') at 90 ° intervals in the neck. The intermediate annulus elastic body 21 is molded by lamination on the outer diameters of the two central annular elastomers 20 and 20 'formed along the central axis, and the outer annular elastic body having a thin thickness is formed on the outer diameter of the intermediate annular elastic body 21. (28) formed two semi-circular grooves 23, 23 ', 23''on the upper and lower sides and the left and right sides of the outermost outer diameter portion along the circumferential direction of the multi-layered multi-sealed seal structure formed in a stacked shape. Connected multi-contact multilayer composite seal composed of a plurality of protruding annular portions (24, 24 ') formed at both edges,
In another example, a multi-layered joint formed by forming a thin shell-like annular elastic body 28 having a thin thickness in the outer diameter portion of the hollow annular elastic body 26 formed so that two hollows 25 and 25 'are adjacent along a central axis. A plurality of protruding annular portions (24) formed at both corners of the composite seal structure, each having two semicircular grooves (23, 23 ', 23 ") formed at the top and bottom of the outermost outer diameter portion and one at the left and right sides thereof in the circumferential direction of the composite seal structure (24). 24 ') connecting multi-contact multilayer composite seal,
In another example, the outermost outer diameter is formed along the circumferential direction of the connecting multilayer composite seal structure in which a thin outer skin-connected annular elastic body 28 is formed in a laminated shape on the outer diameter portion of the annular elastic body 27 in which all of its central axes are filled with elastic bodies. Connected multi-contact multi-layer complex consisting of a plurality of protruding annular portions 24, 24 'formed at both corners of each other, forming two semicircular grooves 23, 23', 23 '' on the upper and lower sides and one left and right side, respectively. seal. A plurality of semicircular grooves 23 and 23 'are formed in the outermost outer diameter portion along the circumferential direction of the double compound seal structure in which the intermediate annular elastic body 21 is formed by laminating the outer annular portion of the central annular elastic body 20 forming the central axis. A multi-contact double composite seal having a structure in which a plurality of protruding annular portions 24, 24 'formed at both corners of each other are formed,
In another example, a plurality of semicircular grooves 23 and 23 'are formed at the outermost outer diameters along the circumferential direction of the hollow annular elastic body 26 having the central axis formed in the hollow 25, and the plurality of corners are formed at both corners of each. A multi-contact hollow seal having two protruding annular portions 24, 24 ',
In another example, a plurality of protruding annular portions formed at both corners of each of the central axes forming a plurality of semicircular grooves 23 and 23 'along the circumferential direction of the annular elastic body 27 filled with elastic bodies. 24,24 ') multi-contact seals. A multi-layer composite seal of a central ring elastic body 20, an intermediate ring elastic body 21 ', and a thin outer shell connection type annular body 28' formed in a stacked shape while going from the central axis to an outer diameter side;
In another example, a hollow hollow multilayer composite seal formed by forming a thin shell-like annular elastic body 28 'having a thin thickness in the form of a laminate at an outer diameter portion of the hollow annular elastic body 26' having a central axis formed into a hollow 25.
KR1020120031324A 2012-03-27 2012-03-27 Multi-layer composite seals with multiple contacts KR20130109538A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107503758A (en) * 2017-10-17 2017-12-22 上海城建市政工程（集团）有限公司 A kind of miniature tube curtain push-bench originates water stop device for opening
CN113216096A (en) * 2021-05-06 2021-08-06 中国葛洲坝集团第一工程有限公司 Jacking-free gate bottom pivot sealing element and in-situ maintenance method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107503758A (en) * 2017-10-17 2017-12-22 上海城建市政工程（集团）有限公司 A kind of miniature tube curtain push-bench originates water stop device for opening
CN107503758B (en) * 2017-10-17 2024-05-14 上海城建市政工程（集团）有限公司 Originating hole water stop device of miniature pipe curtain push bench
CN113216096A (en) * 2021-05-06 2021-08-06 中国葛洲坝集团第一工程有限公司 Jacking-free gate bottom pivot sealing element and in-situ maintenance method

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