High-pressure-resistant metal spiral wound gasket

Abstract

The utility model belongs to the technical field of metal spiral wound gaskets, and particularly relates to a high-pressure-resistant metal spiral wound gasket which comprises an outer ring, an inner ring is arranged in the outer ring, a metal strip is wound between the outer ring and the inner ring, the cross section of the metal strip is I-shaped, a rubber strip is arranged on the inner wall of the metal strip, and shearing force grooves are formed in the two ends of the rubber strip. The inner circle face of the outer ring is provided with an abutting block, the abutting block can be aligned with the tail end of the metal strip and the tail end of the rubber strip, the outer circle face of the inner ring is provided with a containing groove, and the containing groove can be aligned with the starting end of the metal strip and the starting end of the rubber strip. By arranging the metal strip, the overall elasticity of the gasket can be higher, the winding face is tightly attached to the sealing portion, and therefore the sealing effect is improved, meanwhile, the metal strip is arranged to be I-shaped, the contact area between the metal strip and the sealing portion can be increased, the pressure resistance effect is effectively improved, and the pressure resistance of the gasket is further improved by arranging the inclined supporting piece.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal winding gasket technical field especially relates to a kind of high-pressure-resistant metal winding gaskets. BACKGROUND

[0002] Metal winding gasket, widely used at present, is a kind of sealing gasket, which is a resilient gasket in semi-metallic gasket, formed by V-shaped or W-shaped thin steel belt and various fillings alternately winding, can resist high temperature, high pressure and adapt to ultra-low temperature or vacuum conditions, by changing the material combination of gasket, the chemical corrosion problem of gasket by various media can be solved, and the structural density can be made according to different locking force requirements, to strengthen the main body and accurate positioning, winding gasket is provided with metal inner reinforcing ring and outer positioning ring.

[0003] Patent No. CN219796075U discloses a kind of high-pressure-resistant metal winding gaskets, a kind of high-pressure-resistant metal winding gaskets, including winding part, the winding part is annular structure, the inside and outside of the winding part is respectively equipped with inner ring and outer ring, the outer peripheral end face of the inner ring is equipped with the placement groove matched with the winding part on the inner side end face of the outer ring, the upper and lower sides end face of the inner ring and the outer ring is equipped with the fixed component that is movably contacted with the winding part, the placement groove is arc taper structure, improve the tightness of the contact with the winding part, recess ring is opened on the outer peripheral end face of the outer ring, a plurality of groups are evenly opened along the outer peripheral end face of the outer ring, this kind of high-pressure-resistant metal winding gasket solves the defects, such as the larger gap in contact area and the lack of fixing structure in the prior art.

[0004] In the prior art, by setting the placement groove, the gap between the winding part and the outer ring and the inner ring is reduced, but there are still the following problems in the overall use process: first, the adjacent two sides of the existing metal strip are metal strips when winding, the elasticity is poor, which leads to deformation of the metal strip after being pressed hard, affecting the sealing effect; second, the thickness of the existing metal strip after winding is difficult to guarantee consistency, which leads to that the outer ring cannot be mutually adapted with the wound metal strip, and there is a certain gap between the two, affecting the sealing effect. UTILITY MODEL CONTENTS

[0005] The utility model overcomes the defects of prior art, provides a kind of high-pressure-resistant metal winding gasket, by setting metal strip and rubber strip and ball head and shear slot and so on structure, the elasticity of gasket whole can be stronger, the winding surface is tightly attached to sealing part, to improve sealing effect, reduce the deformation generated by pressure intensity, metal strip is set to I-shaped simultaneously, can increase the contact area of metal strip and sealing part, effectively improve the compression resistance effect, by setting inclined brace, further improve the compression resistance of gasket.

[0006] The utility model discloses in order to realize above-mentioned purpose, provide following technical scheme: a kind of high-pressure-resistant metal winding gasket, including outer ring, the inside of outer ring is provided with inner ring, metal strip is wound and arranged between the outer ring and inner ring, the cross section of metal strip is I-shaped, the inner wall of metal strip is provided with rubber strip, metal strip and rubber strip are mutually buckled and connected, metal strip and rubber strip are staggered and wound, both ends of rubber strip are provided with shear slot, the inner circle of outer ring is provided with abutment, the end of metal strip and rubber strip can be aligned with abutment, the outer circle of inner ring is provided with placing groove, the beginning end of metal strip and rubber strip can be aligned with placing groove.

[0007] By setting shear slot, the extrusion of metal strip can be reserved porosity, reduce the generation of shear force, prevent rubber strip from being broken by two metal strips, thereby improve the service life of rubber strip.

[0008] Preferably, the outer edge of the rubber strip is provided with a ball head, and the outer surface of the metal strip is provided with a plurality of spherical grooves.

[0009] By setting ball head, the connection degree of metal strip and rubber strip can be enhanced, and when pressure occurs deformation, the metal strip and rubber strip can be prevented from loosening, and can be staggered and wound, the elasticity of the gasket as a whole can be improved, so that the gasket can tightly fit the sealing part.

[0010] Preferably, the inner part of the rubber strip is provided with a diagonal brace, and the diagonal brace is in an inclined state and abuts against the inner part of the two ball heads.

[0011] By setting diagonal brace, the inner part of the rubber strip can be supported, and the compression resistance of the gasket as a whole can be improved.

[0012] Preferably, the outer part of the abutment is provided with a plurality of mutually superimposed elastic blocks.

[0013] By setting the mutually superimposed elastic blocks, the sealing capacity of the elastic blocks and the end of the rubber strip can be improved, the generation of gaps can be reduced, and raw material leakage can be prevented.

[0014] Preferably, a plurality of convex blocks are arranged on the inner circle of the outer ring.

[0015] By setting a plurality of convex blocks, the thickness of the wound metal strip and rubber strip can be compensated, the gap between the wound part and the inner circle of the outer ring caused by insufficient thickness can be prevented, and the wound metal strip and rubber strip can be tightly fitted.

[0016] Preferably, two convex edges are arranged on the inner circle of the outer ring, and a connecting block capable of buckling with the spherical groove is arranged between the two convex edges.

[0017] By setting two convex edges, positioning and installation of the winding part are facilitated, and installation efficiency is improved.

[0018] Preferably, the outer surface of the placing groove is provided with two sharp ends.

[0019] By setting two sharp ends, the rubber strip can be quickly connected with the placing groove, and the rubber strip can be prevented from loosening and falling off.

[0020] Preferably, the outer circular surface of the inner ring is provided with a buckling groove capable of buckling with the ball head.

[0021] Compared with the prior art, the beneficial effects of the present scheme are:

[0022] (1) The metal strip and the rubber strip, the ball head and the shear groove are arranged, so that the overall elasticity of the gasket is stronger, the metal strip is tightly attached to the sealing part when the metal strip is deformed under extrusion, the sealing effect is improved, the deformation caused by pressure is reduced, the metal strip is arranged in an I shape, the contact area between the metal strip and the sealing part is increased, the pressure resistance effect is effectively improved, the inclined support is arranged, the inclined support pushes the ball head to support the metal strip when the metal strip is deformed under extrusion, and the pressure resistance of the gasket is further improved.

[0023] (2) The metal strip and the rubber strip are fixed by arranging the protrusion, the elastic block, the placing groove and the stopper, the winding thickness of the metal strip and the rubber strip is compensated by arranging the protrusion, the looseness caused by the large difference between the thickness and the inner diameter of the outer ring is prevented, the adhesion of the metal strip and the rubber strip is improved, the length of the metal strip and the rubber strip is compensated by arranging the elastic block, the gap between the end and the inner circular surface of the outer ring is prevented, and the sealing effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective view of the utility model;

[0025] Figure 2 It is a structure schematic view of the inner ring part;

[0026] Figure 3 It is Figure 2 It is a structure schematic view of the middle part;

[0027] Figure 4 It is a structure schematic view of the outer ring part;

[0028] Figure 5 It is a front view of the utility model;

[0029] Figure 6 It isFigure 5 a perspective view of the sectional view at B-B;

[0030] Figure 7 for Figure 6 a partial enlarged view at C;

[0031] In the figure: outer ring 10, inner ring 11, metal strip 12, rubber strip 13, buckling groove 14, tip 15, protruding block 16, elastic block 17, ball head 18, inclined support 19, shear groove 20, connecting block 21, spherical groove 22, placement groove 23, abutting block 24, convex edge 25. DETAILED DESCRIPTION

[0032] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0033] Reference Figure 1 and Figure 2 , including an outer ring 10, the inner part of the outer ring 10 is provided with an inner ring 11, the metal strip 12 is wound between the outer ring 10 and the inner ring 11, the cross section of the metal strip 12 is in the shape of an I-beam, by setting the metal strip 12 as an I-beam, the compressive strength of the metal strip 12 can be improved, the inner wall of the metal strip 12 is provided with a rubber strip 13, the two ends of the rubber strip 13 extend from between the two metal strips 12 and abut against the outer surface of the sealing part, through this setting, the rubber strip 13 will be elastically compressed after being subjected to strong extrusion, thereby tightly fitting the surface of the sealing part, improving the sealing effect, the metal strip 12 and the rubber strip 13 are connected by mutual buckling, the metal strip 12 and the rubber strip 13 are staggered and wound, the two ends of the rubber strip 13 are provided with shear grooves 20, the metal strip 12 will compress the rubber strip 13 on one side after being extruded, forming a shear force on the rubber strip 13, by setting the shear grooves 20, a pore can be reserved for the extrusion of the metal strip 12, reducing the generation of shear force, preventing the rubber strip 13 from being cut off by the two metal strips 12, thereby improving the service life of the rubber strip 13, the inner circular surface of the outer ring 10 is provided with an abutting block 24, the abutting block 24 can be aligned with the ends of the metal strip 12 and the rubber strip 13, by setting the abutting block 24, the ends of the winding can be aligned, reducing the gap between the winding ends and the inner circular surface of the outer ring 10, thereby improving the sealing effect, the outer circular surface of the inner ring 11 is provided with a placement groove 23, the placement groove 23 can be aligned with the starting end of the metal strip 12 and the rubber strip 13.

[0034] Further, with reference to Figure 5 Figure 6 and Figure 7The outer edge of the rubber strip 13 is provided with a ball head 18, the outer surface of the metal strip 12 is provided with a plurality of spherical grooves 22, the ball head 18 can be buckled with the spherical groove 22 through the setting 28 and the protrusion 16, the connection degree of the metal strip 12 and the rubber strip 13 can be enhanced, when the pressure is deformed, the metal strip 12 and the rubber strip 13 can be prevented from loosening, thereby improving the stability of the gasket.

[0035] Further, referring to Figure 5 Figure 6 And Figure 7 The inner part of the rubber strip 13 is provided with a diagonal brace 19, the diagonal brace 19 is in an inclined state and abuts against the inner part of the two ball heads 18, after the two ends of the metal strip 12 are compressed, the two ends of the rubber strip 13 are extruded, through the setting of the diagonal brace 19, the inner part of the rubber strip 13 can be supported when the metal strip 12 extrudes the rubber strip 13, thereby improving the compression resistance of the gasket as a whole.

[0036] Further, referring to Figure 1 And Figure 4 The outer part of the abutting block 24 is provided with a plurality of elastic blocks 17 stacked with each other, through the setting of the plurality of elastic blocks 17, the length of the metal strip 12 and the rubber strip 13 can be compensated when the winding length is insufficient, so that the elastic blocks 17 are tightly attached to the metal strip 12 and the rubber strip 13, the plurality of elastic blocks 17 stacked with each other can improve the sealing ability of the elastic blocks 17 and the ends of the rubber strip 13 and the metal strip 12, thereby preventing raw materials from leaking.

[0037] Further, referring to Figure 1 And Figure 4 The inner circular surface of the outer ring 10 is provided with a plurality of protrusions 16, through the setting of the plurality of protrusions 16, the thickness of the winding of the metal strip 12 and the rubber strip 13 can be compensated, so that the gap between the winding part and the inner circular surface of the outer ring 10 is prevented from being too large due to insufficient thickness, the inner circular surface of the outer ring 10 is provided with two convex edges 25, the two convex edges 25 are protruding parts, the metal strip 12 and the rubber strip 13 can be positioned more easily, a connecting block 21 which can be buckled with the spherical groove 22 is arranged between the two convex edges 25, through the setting of the connecting block 21, the connection strength between the outer ring 10 and the metal strip 12 can be enhanced, thereby improving the stability of the gasket.

[0038] Further, referring to Figure 1 , Figure 2 And Figure 3The outer surface of the placement groove 23 is provided with two sharp ends 15, by providing two sharp ends 15, the sharp ends 15 can be pierced into the inside of the rubber strip 13, so that the inner ring 11 and the rubber strip 13 are fixed more simply and conveniently. The outer surface of the inner ring 11 is provided with a buckling groove 14 which can be buckled with the ball head 18, and the buckling groove 14 can strengthen the connection between the inner ring 11 and the rubber strip 13.

[0039] During installation, the two sharp ends 15 on the outer surface of the inner ring 11 are first pierced into the inside of the rubber strip 13, then one side of the rubber strip 13 is buckled and connected with the buckling groove 14, then the ball head 18 on both sides of the rubber strip 13 is buckled with the spherical groove 22 of the metal strip 12, then it is wound around the inner ring 11, the number of turns is determined according to the specific processing needs, and the present scheme does not make too many limitations. After winding is completed, the inner surface of the outer ring 10 is abutted on the outer surface of the metal strip 12, and the outer ring 10 is rotated so that the elastic block 17 is abutted on the end of the metal strip 12 and the rubber strip 13, then the elastic block 17 is extruded until the spherical groove 22 on the outer surface of the metal strip 12 is buckled with the connecting block 21, and the installation is completed.

[0040] As used in the specification and claims, certain terminology is used to refer to specific components. Those skilled in the art will appreciate that hardware manufacturers can refer to the same component using different names. The specification and claims do not distinguish components based on differences in name, but rather based on differences in functionality. As used throughout the specification and claims, "comprising" is a transitive word, and is intended to be equivalent to "including", but encompassing, without limitation, additional or further non-recited members. "Substantially" refers to an acceptable range of error, within which those skilled in the art can solve the technical problem and substantially achieve the technical effect.

[0041] It should be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, such that a product or system including a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such product or system. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the product or system comprising the element.

[0042] The foregoing description illustrates and describes several preferred embodiments of the present application. However, it is to be understood that the application is not limited to the precise forms described, and that changes can be made therein without departing from the scope of the present application. Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. Therefore, the specification and examples are to be considered exemplary only, with a true scope and spirit of the application being indicated by the following claims.

Claims

1. A high pressure resistant metal wound gasket comprising an outer ring (10) characterized in that, The inner part of the outer ring (10) is provided with an inner ring (11), and a metal strip (12) is wound between the outer ring (10) and the inner ring (11), the cross section of the metal strip (12) is in the shape of an I-beam, the inner wall of the metal strip (12) is provided with a rubber strip (13), the metal strip (12) and the rubber strip (13) are connected by mutual buckling, the metal strip (12) and the rubber strip (13) are staggered, both ends of the rubber strip (13) are provided with shear grooves (20), the inner circular surface of the outer ring (10) is provided with a stop block (24), the stop block (24) can be aligned with the end of the metal strip (12) and the rubber strip (13), the outer circular surface of the inner ring (11) is provided with a placing groove (23), and the placing groove (23) can be aligned with the starting end of the metal strip (12) and the rubber strip (13).

2. A high pressure resistant metal wound gasket according to claim 1, characterized in that The outer edge of the rubber strip (13) is provided with a ball head (18), and the outer surface of the metal strip (12) is provided with a plurality of spherical grooves (22), and the ball head (18) can be buckled with the spherical groove (22).

3. A high pressure resistant metal wound gasket according to claim 2, characterized in that The inner part of the rubber strip (13) is provided with a diagonal brace (19), and the diagonal brace (19) is in an inclined state and abuts against the inner part of the two ball heads (18).

4. A high pressure resistant metal wound gasket according to claim 1, characterized in that The outer part of the stop block (24) is provided with a plurality of elastic blocks (17) stacked with each other.

5. A high pressure resistant metal wound gasket according to claim 1, characterized in that The inner circular surface of the outer ring (10) is provided with a plurality of convex blocks (16), and the plurality of convex blocks (16) are arranged in a ring shape.

6. A high pressure resistant metal wound gasket according to claim 1, characterized in that The inner circular surface of the outer ring (10) is provided with two convex edges (25), and a connecting block (21) capable of buckling with the spherical groove (22) is arranged between the two convex edges (25).

7. A high pressure resistant metal wound gasket according to claim 1, characterized in that The outer surface of the placing groove (23) is provided with two sharp ends (15).

8. A high pressure resistant metal wound gasket according to claim 1, characterized in that The outer circular surface of the inner ring (11) is provided with a buckling groove (14) capable of buckling with the ball head (18).

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