Multi-stage sealing wear-resistant graphite gasket

Abstract

The utility model discloses a multistage sealing wear-resistant graphite gasket, which belongs to the technical field of graphite gaskets and comprises a graphite gasket body, a mounting mechanism is arranged outside the graphite gasket body, and an embedding mechanism is arranged outside the mounting mechanism. The installation mechanism comprises a stainless steel ring, the graphite gasket body is located on the inner side of the stainless steel ring, an installation groove surrounding the graphite gasket body is formed in the outer wall of the stainless steel ring, and a plurality of evenly-distributed connecting grooves are formed in the inner wall of the stainless steel ring. Limiting grooves in one-to-one correspondence with the connecting grooves are formed in the outer wall of the graphite gasket body, the same limiting block is slidably connected between the inner walls of the limiting grooves and the inner walls of the connecting grooves, and the top and the bottom of the side, close to the graphite gasket body, of the limiting block are each of an arc-shaped structure. According to the graphite gasket, the graphite gasket body can be stably fixed, installation can be facilitated, and the effect of preventing the gasket from being damaged is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite gaskets, in particular to a multi-stage sealing wear-resistant graphite gasket. Background Art

[0002] Graphite sealing rings are made of intertwined graphite and metal strips and offer numerous excellent sealing properties, including thermal stability, self-lubrication, corrosion resistance, resistance to aging, and resistance to brittleness. They offer long-term, stable operation under harsh operating conditions and require minimal maintenance. Currently, graphite sealing rings are widely used in pipes, valves, pumps, pressure vessels, heat exchangers, condensers, generators, air compressors, exhaust pipes, and refrigerators. To enhance the sealing performance of these gaskets, a multi-stage, wear-resistant graphite gasket is required.

[0003] However, during the installation process, the graphite rings are directly installed on the metal ring sheet. In order to ensure that they are pressed tightly, the inner diameter of the outer structure needs to be slightly smaller than the outer diameter of the inner structure. Once the pressure applied to the graphite ring is too large, the metal ring sheet will cause excessive squeezing of the graphite ring, thereby causing damage to the graphite ring and affecting its sealing effect. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a multi-stage sealing wear-resistant graphite gasket. The utility model has the advantages of being easy to install and preventing gasket damage.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A multi-stage sealing wear-resistant graphite gasket comprises a graphite gasket body, a mounting mechanism is provided outside the graphite gasket body, and an embedding mechanism is provided outside the mounting mechanism;

[0007] The mounting mechanism includes a stainless steel ring, the graphite gasket body is located inside the stainless steel ring, the outer wall of the stainless steel ring is provided with a mounting groove surrounding the graphite gasket body, the inner wall of the stainless steel ring is provided with a plurality of evenly distributed connecting grooves, the outer wall of the graphite gasket body is provided with limiting grooves corresponding to the connecting grooves one by one, and the inner wall of the limiting groove and the inner wall of the connecting groove are slidably connected with the same limiting block, which can make the graphite gasket body fixed and stable, facilitate installation, and achieve the effect of avoiding damage to the gasket.

[0008] The top and bottom of the side of the limit block close to the graphite gasket body are both arc-shaped structures. The arc-shaped structure design can prevent the corners of the limit block from causing damage to the graphite gasket body.

[0009] A connecting port extending into the mounting slot is provided on the inner wall of one side of the connecting slot. A connecting rod is connected to the inner wall of the connecting port through a thread. The connecting rod is rotatably connected to the limit block through a bearing. The setting of the connecting rod allows it to rotate in the inner wall of the connecting port, thereby fixing and stabilizing the graphite gasket body.

[0010] The outer wall of the graphite gasket body is fixedly connected with several evenly distributed positioning blocks, and the inner wall of the stainless steel ring is provided with positioning openings corresponding to the positioning blocks one by one. The inner wall of the positioning opening forms a sliding fit with the positioning blocks and is adapted to each other. The positioning blocks are triangular prism-shaped. The setting of the positioning blocks can increase the friction between the two, thereby making the graphite gasket body fixed and stable.

[0011] The embedding mechanism includes a copper ring surrounding the stainless steel ring. The top outer edge of the stainless steel ring is provided with an embedding opening extending into the mounting groove. The inner wall of the embedding opening and the copper ring form a movable fit. The copper ring adopts a hot pressing process. The copper ring is set so that it can be pressed to the embedding opening after heating. After the copper ring cools down, the copper ring holds the stainless steel ring tightly.

[0012] An embedding ring is fixedly connected to the top of the copper ring, and a sliding fit is formed between the embedding ring and the inner wall of the embedding opening. The embedding ring can shrink after cooling and can fit tightly with the embedding opening.

[0013] The beneficial effects of the utility model are:

[0014] 1. The multi-stage sealed wear-resistant graphite gasket is configured to be installed in a suitable position by rotating the connecting rod so that the limit block is located in the connecting groove, pressing the graphite gasket body into the stainless steel ring, and inserting the positioning block into the positioning port. The friction between the positioning port and the positioning block can fix the graphite gasket body stably. After the graphite gasket body is installed in the appropriate position, the connecting rod is rotated so that the limit block slides into the limit groove through the inner wall of the connecting groove. Therefore, the installation is convenient and the gasket damage can be avoided.

[0015] 2. The multi-stage sealing wear-resistant graphite gasket can be pressed to the embedding port through the copper ring after heating. After the copper ring cools down, the copper ring holds the stainless steel ring tightly, and the embedding ring can shrink after cooling and fit tightly with the embedding port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a multi-stage sealing wear-resistant graphite gasket proposed by the utility model;

[0017] Figure 2 This is a structural diagram of a multi-stage sealing wear-resistant graphite gasket with a prominent limit block proposed in the utility model;

[0018] Figure 3This is a structural diagram of a multi-stage sealing wear-resistant graphite gasket with a prominent copper ring proposed in the utility model;

[0019] Figure 4 This is a structural schematic diagram of a multi-stage sealing wear-resistant graphite gasket with a prominent connecting rod proposed by the utility model.

[0020] In the figure: 1. Graphite gasket body; 2. Stainless steel ring; 3. Mounting groove; 4. Connecting groove; 5. Limiting groove; 6. Limiting block; 7. Connecting port; 8. Connecting rod; 9. Positioning port; 10. Positioning block; 11. Copper ring; 12. Embedding port; 13. Embedding ring. DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0024] Reference Figure 1-4 A multi-stage sealing wear-resistant graphite gasket includes a graphite gasket body 1, a mounting mechanism is provided outside the graphite gasket body 1, and an embedding mechanism is provided outside the mounting mechanism;

[0025] The mounting mechanism includes a stainless steel ring 2, the graphite gasket body 1 is located inside the stainless steel ring 2, the outer wall of the stainless steel ring 2 is provided with a mounting groove 3 surrounding the graphite gasket body 1, the inner wall of the stainless steel ring 2 is provided with a plurality of evenly distributed connecting grooves 4, the outer wall of the graphite gasket body 1 is provided with limiting grooves 5 corresponding one to one to the connecting grooves 4, and the inner wall of the limiting groove 5 and the inner wall of the connecting groove 4 are slidably connected with the same limiting block 6.

[0026] The top and bottom of the side of the limit block 6 close to the graphite gasket body 1 are both arc-shaped structures. The arc-shaped structure can make the side of the limit block 6 close to the graphite gasket body 1 an arc surface, which can avoid the corners of the limit block 6 from causing damage to the graphite gasket body 1.

[0027] A connecting port 7 extending into the mounting slot 3 is provided on the inner wall of one side of the connecting slot 4. The inner wall of the connecting port 7 is connected to a connecting rod 8 through a thread. The connecting rod 8 and the limit block 6 are rotatably connected through a bearing. The connecting rod 8 can rotate in the inner wall of the connecting port 7. The rotation of the connecting rod 8 can make the limit block 6 slide in the inner wall of the connecting slot 4, so that the graphite gasket body 1 can be fixed and stabilized.

[0028] The outer wall of the graphite gasket body 1 is fixedly connected with several evenly distributed positioning blocks 10, and the inner wall of the stainless steel ring 2 is provided with positioning openings 9 corresponding to the positioning blocks 10 one by one. The inner wall of the positioning opening 9 and the positioning blocks 10 form a sliding fit and are adapted to each other. The positioning blocks 10 are triangular prism-shaped. The positioning blocks 10 can increase the contact area between the graphite gasket body 1 and the stainless steel ring 2, increase the friction between the two, and make the graphite gasket body 1 fixed and stable.

[0029] The embedding mechanism includes a copper ring 11 surrounding the stainless steel ring 2. The top outer edge of the stainless steel ring 2 is provided with an embedding opening 12 extending into the mounting groove 3. The inner wall of the embedding opening 12 and the copper ring 11 form a movable fit. The copper ring 11 adopts a hot pressing process. The copper ring 11 can be pressed to the embedding opening 12 after heating. After the copper ring 11 cools down, the copper ring 11 holds the stainless steel ring 2 tightly.

[0030] An embedding ring 13 is fixedly connected to the top of the copper ring 11 , and a sliding fit is formed between the embedding ring 13 and the inner wall of the embedding opening 12 . The embedding ring 13 can shrink after cooling and fit tightly against the embedding opening 12 .

[0031] Working principle: When in use, rotate the connecting rod 8 so that the limit block 6 is located in the connecting groove 4, press the graphite gasket body 1 into the stainless steel ring 2, and insert the positioning block 10 into the positioning port 9. The friction between the positioning port 9 and the positioning block 10 can fix and stabilize the graphite gasket body 1. After the graphite gasket body 1 is installed in the appropriate position, rotate the connecting rod 8 and make the limit block 6 slide into the limit groove 5 through the inner wall of the connecting groove 4. Therefore, it is easy to install and the effect of avoiding gasket damage is achieved.

[0032] Heat the copper ring 11 and press it to the embedding opening 12. After the copper ring 11 cools down, it will shrink and be located in the mounting groove 3 to seal the mounting groove 3. At this time, the embedding ring 13 can hold the stainless steel ring 2 tightly. Finally, decide whether to polish the outer surface of the copper ring 11 according to the needs of the installation environment.

[0033] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A multi-stage sealing wear-resistant graphite gasket, comprising a graphite gasket body (1), characterized in that: A mounting mechanism is provided outside the graphite gasket body (1), and an embedding mechanism is provided outside the mounting mechanism; The mounting mechanism comprises a stainless steel ring (2), the graphite gasket body (1) is located inside the stainless steel ring (2), the outer wall of the stainless steel ring (2) is provided with a mounting groove (3) surrounding the graphite gasket body (1), the inner wall of the stainless steel ring (2) is provided with a plurality of evenly distributed connecting grooves (4), the outer wall of the graphite gasket body (1) is provided with a limiting groove (5) corresponding to the connecting grooves (4), and the inner wall of the limiting groove (5) and the inner wall of the connecting groove (4) are slidably connected by a same limiting block (6).

2. The multi-stage sealing wear-resistant graphite gasket according to claim 1, characterized in that: The top and bottom of the side of the limiting block (6) close to the graphite gasket body (1) are both in an arc-shaped structure.

3. The multi-stage sealing wear-resistant graphite gasket according to claim 2, characterized in that: A connecting port (7) extending into the mounting slot (3) is provided on an inner wall of one side of the connecting slot (4); a connecting rod (8) is connected to the inner wall of the connecting port (7) via a thread; and the connecting rod (8) is rotatably connected to the limiting block (6) via a bearing.

4. The multi-stage sealing wear-resistant graphite gasket according to claim 1, characterized in that: The outer wall of the graphite gasket body (1) is fixedly connected with a plurality of evenly distributed positioning blocks (10); the inner wall of the stainless steel ring (2) is provided with positioning openings (9) corresponding one-to-one with the positioning blocks (10); the inner wall of the positioning opening (9) and the positioning blocks (10) form a sliding fit and are adapted to each other; the positioning blocks (10) are triangular prism-shaped structures.

5. The multi-stage sealing wear-resistant graphite gasket according to claim 1, characterized in that: The embedding mechanism comprises a copper ring (11) surrounding a stainless steel ring (2); an embedding opening (12) extending into the mounting groove (3) is provided on the top outer edge of the stainless steel ring (2); and an inner wall of the embedding opening (12) and the copper ring (11) form a movable fit.

6. The multi-stage sealing wear-resistant graphite gasket according to claim 5, characterized in that: The copper ring (11) is produced by a hot pressing process.

7. The multi-stage sealing wear-resistant graphite gasket according to claim 6, characterized in that: An embedded ring (13) is fixedly connected to the top of the copper ring (11), and a sliding fit is formed between the embedded ring (13) and the inner wall of the embedding opening (12).

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