Multistage sealing graphite gasket with enhanced flexibility

Abstract

The utility model provides a multistage sealing graphite gasket with enhanced flexibility, which relates to the technical field of graphite gaskets and comprises a first backing ring, and a second backing ring is arranged at the top end of the first backing ring. A first fixing ring is arranged on the inner wall of a first backing ring, a sealing ring is arranged at the top end of the first fixing ring, a second adhesion layer is connected with a sealing layer, a copper ring is arranged at the top of the sealing layer, a bolt is arranged in a limiting hole and made of silica gel, and a sliding block is arranged in a third limiting groove. A third mounting hole is formed in the top end of the sliding block, a second fixing ring is arranged on one side of the sliding block, a fourth limiting groove is formed in the bottom end of the second fixing ring, a sealing ring is matched with the fourth limiting groove, primary sealing can be conducted through the effect of a sealing layer, and the sliding block moves in the fourth limiting groove through the effect of a bolt; and the sealing ring enters the fourth limiting groove to perform second-stage sealing, so that the graphite gasket has multi-stage sealing, and the sealing effect of the graphite gasket is better.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite gaskets, in particular to a multi-stage sealing graphite gasket with enhanced flexibility. Background Art

[0002] Graphite sealing rings are made of graphite tape and metal tape wound together. They have many excellent sealing properties, such as thermal stability, self-lubrication, corrosion resistance, no aging, no brittleness, etc. They can be used stably for a long time under harsh working conditions and rarely require maintenance. Currently, graphite sealing rings are widely used in pipelines, valves, pumps, pressure vessels, heat exchangers, condensers, generators, air compressors, exhaust pipes, refrigerators, etc. to enhance the sealing of gaskets.

[0003] Existing graphite gaskets are basically single annular structures with a flat surface. The gasket is placed between connectors, and a seal is formed by the interaction of squeezing the gasket to produce deformation and the elastic restoring force of the gasket. However, a gap is easily formed between the gasket and the connector, resulting in poor sealing effect. In addition, the gasket is easily damaged after long-term use and has poor durability. Utility Model Content

[0004] The utility model aims to solve the problems of poor sealing effect, easy damage after long-term use and poor durability in the prior art, and proposes a multi-stage sealing graphite gasket with enhanced flexibility.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a flexible enhanced multi-stage sealing graphite gasket, comprising a first gasket ring, a second gasket ring is arranged at the top of the first gasket ring, a third gasket ring is arranged at the top of the second gasket ring, a first metal sheet is arranged on the outer surface of the first gasket ring, a first mounting hole is opened at the top of the first metal sheet, a second metal sheet is arranged on the outer surface of the third gasket ring, a second mounting hole is opened at the top of the second metal sheet, a first fixing ring is arranged on the inner wall of the first gasket ring, a sealing ring is arranged at the top of the first fixing ring, a limiting hole is opened at the top of the third gasket ring, a bolt is arranged inside the limiting hole, and the material of the bolt is silicone.

[0006] Preferably, the first gasket includes a wear-resistant layer, a graphite belt and a reinforcement layer, the wear-resistant layer is made of epoxy resin, the reinforcement layer is made of metal wire, a graphite belt is arranged on the top of the wear-resistant layer, a reinforcement layer is arranged on the top of the graphite belt, and the inner walls of the wear-resistant layer, the graphite belt and the reinforcement layer are respectively provided with first limiting grooves.

[0007] Preferably, the second gasket includes a first adhesive layer, a rubber layer and a second adhesive layer, the reinforcement layer is connected to the first adhesive layer, a rubber layer is arranged on the top of the first adhesive layer, a second adhesive layer is arranged on the top of the rubber layer, and second limiting grooves are respectively provided on the inner walls of the first adhesive layer, the rubber layer and the second adhesive layer.

[0008] Preferably, the third gasket includes a sealing layer and a copper ring, the second adhesive layer is connected to the sealing layer, a copper ring is arranged on the top of the sealing layer, and third limiting grooves are respectively provided on the inner walls of the sealing layer and the copper ring.

[0009] Preferably, the first limiting groove is connected with the second limiting groove and the third limiting groove, a sliding block is arranged inside the third limiting groove, a third mounting hole is formed at the top end of the sliding block, and the bolt matches the third mounting hole.

[0010] Preferably, a second fixing ring is provided on one side of the sliding block, a fourth limiting groove is provided at the bottom end of the second fixing ring, a fifth limiting groove is provided on the inner wall of the fourth limiting groove, and the sealing ring matches the fourth limiting groove.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, a first fixing ring is arranged on the inner wall of the first gasket ring, a sealing ring is arranged on the top of the first fixing ring, a second adhesive layer is connected to the sealing layer, a copper ring is arranged on the top of the sealing layer, a bolt is arranged inside the limiting hole, the material of the bolt is silicone, a slider is arranged inside the third limiting groove, a third mounting hole is opened on the top of the slider, a second fixing ring is arranged on one side of the slider, a fourth limiting groove is opened at the bottom end of the second fixing ring, the sealing ring matches the fourth limiting groove, and primary sealing can be performed by the action of the sealing layer, and the slider is moved inside the fourth limiting groove by the action of the bolt, so that the sealing ring enters the fourth limiting groove for secondary sealing, so that the graphite gasket has multi-stage sealing, and its sealing effect is better.

[0013] 2. In the utility model, a graphite belt is arranged on the top of the wear-resistant layer, a reinforcement layer is arranged on the top of the graphite belt, the material of the wear-resistant layer is epoxy resin, the material of the reinforcement layer is metal wire, the reinforcement layer is connected to the first adhesion layer, a rubber layer is arranged on the top of the first adhesion layer, a second adhesion layer is arranged on the top of the rubber layer, the third gasket includes a sealing layer and a copper ring, the second adhesion layer is connected to the sealing layer, and a copper ring is arranged on the top of the sealing layer. The wear-resistant layer can make the gasket more wear-resistant, and the reinforcement layer and the rubber layer can make the gasket more durable, more flexible and less prone to damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1A three-dimensional structural diagram of a multi-stage sealing graphite gasket with enhanced flexibility is proposed for the utility model;

[0015] Figure 2 The utility model provides a three-dimensional development diagram of the first gasket ring in a multi-stage sealing graphite gasket with enhanced flexibility;

[0016] Figure 3 The utility model provides a three-dimensional development diagram of the second gasket ring in a multi-stage sealing graphite gasket with enhanced flexibility;

[0017] Figure 4 The utility model provides a three-dimensional development diagram of the third gasket ring in a multi-stage sealing graphite gasket with enhanced flexibility;

[0018] Figure 5 The utility model provides a three-dimensional structural diagram of a first fixing ring and a second fixing ring in a multi-stage sealing graphite gasket with enhanced flexibility.

[0019] Legend: 1. First gasket; 101. Wear-resistant layer; 102. Graphite tape; 103. Reinforcement layer; 104. First limiting groove; 2. Second gasket; 201. First adhesion layer; 202. Rubber layer; 203. Second adhesion layer; 204. Second limiting groove; 3. Third gasket; 301. Sealing layer; 302. Copper ring; 303. Third limiting groove; 4. First metal sheet; 5. First mounting hole; 6. Second metal sheet; 7. Second mounting hole; 8. First fixing ring; 9. Sealing ring; 10. Slider; 11. Third mounting hole; 12. Second fixing ring; 13. Fourth limiting groove; 14. Fifth limiting groove; 15. Limiting hole; 16. Bolt. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1, as Figure 1 - Figure 5As shown, the utility model provides a flexible enhanced multi-stage sealing graphite gasket, including a first gasket 1, a second gasket 2 is arranged at the top of the first gasket 1, a third gasket 3 is arranged at the top of the second gasket 2, a first metal sheet 4 is arranged on the outer surface of the first gasket 1, a first mounting hole 5 is opened at the top of the first metal sheet 4, a second metal sheet 6 is arranged on the outer surface of the third gasket 3, a second mounting hole 7 is opened at the top of the second metal sheet 6, a first fixing ring 8 is arranged on the inner wall of the first gasket 1, a sealing ring 9 is arranged at the top of the first fixing ring 8, a limiting hole 15 is opened at the top of the third gasket 3, a bolt 16 is arranged inside the limiting hole 15, and the material of the bolt 16 is silicone.

[0023] The effect achieved by the entire embodiment 1 is as follows: a second gasket 2 is arranged at the top of the first gasket 1, a third gasket 3 is arranged at the top of the second gasket 2, a first metal sheet 4 is arranged on the outer surface of the first gasket 1, a first mounting hole 5 is opened at the top of the first metal sheet 4, a second metal sheet 6 is arranged on the outer surface of the third gasket 3, a second mounting hole 7 is opened at the top of the second metal sheet 6, the gasket can be fixed more firmly through the action of the first mounting hole 5 and the second mounting hole 7, a first fixing ring 8 is arranged on the inner wall of the first gasket 1, a sealing ring 9 is arranged at the top of the first fixing ring 8, the sealing performance of the gasket can be improved through the action of the sealing ring 9, a limiting hole 15 is opened at the top of the third gasket 3, a bolt 16 is arranged inside the limiting hole 15, and the material of the bolt 16 is silicone, which can play an effect of better fixing the bolt 16 inside the limiting hole 15.

[0024] Embodiment 2, as Figure 1 - Figure 5As shown, the first gasket 1 includes a wear-resistant layer 101, a graphite tape 102 and a reinforcement layer 103. The material of the wear-resistant layer 101 is epoxy resin, and the material of the reinforcement layer 103 is metal wire. The graphite tape 102 is arranged on the top of the wear-resistant layer 101, and the reinforcement layer 103 is arranged on the top of the graphite tape 102. The inner walls of the wear-resistant layer 101, the graphite tape 102 and the reinforcement layer 103 are respectively provided with a first limiting groove 104; the second gasket 2 includes a first adhesive layer 201, a rubber layer 202 and a second adhesive layer 203. The reinforcement layer 103 is connected to the first adhesive layer 201, the rubber layer 202 is arranged on the top of the first adhesive layer 201, and the second adhesive layer 203 is arranged on the top of the rubber layer 202. The inner walls of the first adhesive layer 201, the rubber layer 202 and the second adhesive layer 203 are respectively provided with a first limiting groove 104. The second limiting groove 204 is respectively provided on the wall; the third gasket 3 includes a sealing layer 301 and a copper ring 302, the second adhesive layer 203 is connected to the sealing layer 301, the copper ring 302 is arranged on the top of the sealing layer 301, and the inner walls of the sealing layer 301 and the copper ring 302 are respectively provided with a third limiting groove 303; the first limiting groove 104 is connected with the second limiting groove 204 and the third limiting groove 303, the inside of the third limiting groove 303 is provided with a slider 10, the top of the slider 10 is provided with a third mounting hole 11, and the bolt 16 matches the third mounting hole 11; a second fixing ring 12 is provided on one side of the slider 10, the bottom end of the second fixing ring 12 is provided with a fourth limiting groove 13, the inner wall of the fourth limiting groove 13 is provided with a fifth limiting groove 14, and the sealing ring 9 matches the fourth limiting groove 13.

[0025] The effect achieved by the entire embodiment 2 is that the first gasket 1 includes a wear-resistant layer 101, a graphite belt 102 and a reinforcement layer 103, the wear-resistant layer 101 is made of epoxy resin, the reinforcement layer 103 is made of metal wire, the graphite belt 102 is arranged at the top of the wear-resistant layer 101, the reinforcement layer 103 is arranged at the top of the graphite belt 102, and the inner walls of the wear-resistant layer 101, the graphite belt 102 and the reinforcement layer 103 are respectively provided with a first limiting groove 104, the wear-resistant layer 101 can make the gasket more wear-resistant, and the reinforcement layer 103 can make the gasket more durable, more flexible and less prone to wear. Damage; the second gasket 2 includes a first adhesive layer 201, a rubber layer 202 and a second adhesive layer 203, the reinforcement layer 103 is connected to the first adhesive layer 201, the rubber layer 202 is arranged on the top of the first adhesive layer 201, the second adhesive layer 203 is arranged on the top of the rubber layer 202, and the inner walls of the first adhesive layer 201, the rubber layer 202 and the second adhesive layer 203 are respectively provided with second limiting grooves 204, the first adhesive layer 201 and the second adhesive layer 203 can make the gasket connection more stable, and the rubber layer 202 can make the gasket more flexible. Enhanced effect; the third gasket 3 includes a sealing layer 301 and a copper ring 302, the second adhesive layer 203 is connected to the sealing layer 301, the copper ring 302 is arranged on the top of the sealing layer 301, and the inner walls of the sealing layer 301 and the copper ring 302 are respectively provided with a third limiting groove 303, so that the sealing performance of the gasket can be improved through the action of the sealing layer 301; the first limiting groove 104 is connected with the second limiting groove 204 and the third limiting groove 303, and a slider 10 is arranged inside the third limiting groove 303, and a third mounting hole 11 is arranged on the top of the slider 10, and the bolt 16 is connected with the third mounting hole 11 matches, and through the action of the bolt 16, the slider 10 can be better moved and fixed inside the first limiting groove 104, the second limiting groove 204 and the third limiting groove 303, so that the sealing ring 9 is in contact with the fourth limiting groove 13; a second fixing ring 12 is set on one side of the slider 10, a fourth limiting groove 13 is opened at the bottom end of the second fixing ring 12, and a fifth limiting groove 14 is opened on the inner wall of the fourth limiting groove 13, and the sealing ring 9 is matched with the fourth limiting groove 13, which can make the sealing ring 9 enter the interior of the fourth limiting groove 13, so that the gasket can achieve a sealing effect.

[0026] Working principle: The utility model sets a second gasket 2 on the top of the first gasket 1, and sets a third gasket 3 on the top of the second gasket 2. The first gasket 1 includes a wear-resistant layer 101, a graphite tape 102 and a reinforcement layer 103. The second gasket 2 includes a first adhesive layer 201, a rubber layer 202 and a second adhesive layer 203. The third gasket 3 includes a sealing layer 301 and a copper ring 302. A second fixing ring 12 is set on one side of the slider 10. A fourth limiting groove 13 is opened at the bottom end of the second fixing ring 12. The sealing ring 9 matches the fourth limiting groove 13 and can be sealed. The sealing layer 301 performs primary sealing. Through the action of the bolt 16, the slider 10 moves inside the fourth limiting groove 13, so that the sealing ring 9 enters the fourth limiting groove 13, and the fifth limiting groove 14 is set on the inner wall of the fourth limiting groove 13, so that when the gasket is squeezed, the sealing ring 9 has a certain deformation space, thereby performing secondary sealing, and then forming a multi-stage sealed graphite gasket. The wear-resistant layer 101 makes the gasket more wear-resistant. Under the action of the reinforcement layer 103 and the rubber layer 202, the gasket is more durable, more flexible and not easy to be damaged.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A multi-stage sealing graphite gasket with enhanced flexibility, comprising a first gasket ring (1), characterized in that: A second gasket (2) is arranged at the top of the first gasket (1), a third gasket (3) is arranged at the top of the second gasket (2), a first metal sheet (4) is arranged on the outer surface of the first gasket (1), a first mounting hole (5) is provided at the top of the first metal sheet (4), a second metal sheet (6) is arranged on the outer surface of the third gasket (3), a second mounting hole (7) is provided at the top of the second metal sheet (6), a first fixing ring (8) is arranged on the inner wall of the first gasket (1), a sealing ring (9) is arranged at the top of the first fixing ring (8), a limiting hole (15) is provided at the top of the third gasket (3), a bolt (16) is arranged inside the limiting hole (15), and the material of the bolt (16) is silicone.

2. The multi-stage sealing graphite gasket with enhanced flexibility according to claim 1, characterized in that: The first gasket (1) comprises a wear-resistant layer (101), a graphite tape (102) and a reinforcement layer (103); the wear-resistant layer (101) is made of epoxy resin, the reinforcement layer (103) is made of metal wire, the graphite tape (102) is arranged at the top of the wear-resistant layer (101), the reinforcement layer (103) is arranged at the top of the graphite tape (102), and the inner walls of the wear-resistant layer (101), the graphite tape (102) and the reinforcement layer (103) are respectively provided with a first limiting groove (104).

3. The multi-stage sealing graphite gasket with enhanced flexibility according to claim 2, characterized in that: The second gasket (2) comprises a first adhesive layer (201), a rubber layer (202) and a second adhesive layer (203); the reinforcement layer (103) is connected to the first adhesive layer (201); a rubber layer (202) is arranged at the top of the first adhesive layer (201); a second adhesive layer (203) is arranged at the top of the rubber layer (202); and second limiting grooves (204) are respectively provided on the inner walls of the first adhesive layer (201), the rubber layer (202) and the second adhesive layer (203).

4. The multi-stage sealing graphite gasket with enhanced flexibility according to claim 3, characterized in that: The third gasket (3) comprises a sealing layer (301) and a copper ring (302), the second adhesive layer (203) is connected to the sealing layer (301), a copper ring (302) is arranged on the top of the sealing layer (301), and third limiting grooves (303) are respectively provided on the inner walls of the sealing layer (301) and the copper ring (302).

5. The multi-stage sealing graphite gasket with enhanced flexibility according to claim 4, characterized in that: The first limiting groove (104) is connected with the second limiting groove (204) and the third limiting groove (303); a slider (10) is arranged inside the third limiting groove (303); a third mounting hole (11) is provided at the top end of the slider (10); and the bolt (16) matches the third mounting hole (11).

6. The multi-stage sealing graphite gasket with enhanced flexibility according to claim 5, characterized in that: A second fixing ring (12) is arranged on one side of the sliding block (10); a fourth limiting groove (13) is provided at the bottom end of the second fixing ring (12); a fifth limiting groove (14) is provided on the inner wall of the fourth limiting groove (13); and the sealing ring (9) matches the fourth limiting groove (13).

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