Non-asbestos temperature-resistant sealing gasket

Abstract

The utility model provides an asbestos-free temperature-resistant sealing gasket. The non-asbestos temperature-resistant sealing gasket comprises a gasket body, a mounting ring is fixedly connected to the inner surface of the gasket body, a plurality of limiting openings are formed in the inner surface of the mounting ring, a memory alloy wire is arranged in the gasket body, and a bevel edge is arranged on the front face of the gasket body. According to the asbestos-free temperature-resistant sealing gasket, the gasket body can be conveniently installed through the installation ring, the limiting openings are formed in the asbestos-free temperature-resistant sealing gasket, after the gasket body is installed on equipment, limiting pieces on the equipment can be matched with the limiting openings, so that the gasket body is positioned and cannot rotate, the use stability is improved, and the service life of the gasket body is prolonged. And the memory alloy wire is arranged in the gasket body, when the working temperature rises, the local thickness and tightness of the gasket body are automatically and finely adjusted, material shrinkage caused by high temperature is compensated in real time, and it is ensured that sealing is always in the optimal state.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sealing gasket, especially to a non-asbestos temperature-resistant sealing gasket. BACKGROUND

[0002] Sealing gasket is a sealing spare part used in machinery, equipment and pipeline where fluid exists, and is used internally and externally to play a sealing role. The sealing gasket is made of metal or non-metal plate material through cutting, stamping or cutting process, and is used for sealing connection between pipelines, sealing connection between machine parts of machines and equipment. According to the material, the sealing gasket can be divided into metal sealing gasket and non-metal sealing gasket.

[0003] Traditional sealing gaskets are mostly made of asbestos material. However, asbestos is easy to produce dust during use, especially in high-temperature environment, which causes great harm to human health. For example, long-term inhalation of asbestos dust can cause lung disease and even cancer. At the same time, with the continuous development of industrial technology, the operation environment of equipment becomes more and more complex, and the existing sealing gaskets cannot withstand high temperature and are easy to deform or break in high-temperature environment, so it is urgent to develop new alternative products.

[0004] Therefore, it is necessary to provide a non-asbestos temperature-resistant sealing gasket to solve the above technical problems. SUMMARY

[0005] The utility model provides a non-asbestos temperature-resistant sealing gasket, which solves the problem of deformation or breakage in high-temperature environment.

[0006] To solve the above technical problems, the utility model provides a non-asbestos temperature-resistant sealing gasket, which comprises a gasket body.

[0007] The inner surface of the gasket body is fixedly connected with a mounting ring, the inner surface of the mounting ring is provided with a plurality of limiting openings, the inside of the gasket body is provided with a memory alloy wire, and the front surface of the gasket body is provided with a bevel.

[0008] Preferably, the gasket body comprises a base layer, the top and bottom of the base layer are provided with temperature-resistant layers, the sides away from each other of the two temperature-resistant layers are provided with wear-resistant coatings, and the memory alloy wire is distributed in the base layer in a surrounding manner.

[0009] Preferably, the material of the base layer is rubber.

[0010] Preferably, the material of the temperature-resistant layer is polytetrafluoroethylene.

[0011] Preferably, the material of the wear-resistant coating is polyimide.

[0012] Preferably, the thickness of the base layer is 5-12mm, the thickness of the heat-resistant layer is 1-5mm, and the thickness of the wear-resistant coating is 1-3mm.

[0013] Preferably, the back of the gasket body is provided with a plurality of opening slots.

[0014] Compared with related technologies, the asbestos-free, temperature-resistant sealing gasket provided by this utility model has the following beneficial effects:

[0015] This utility model provides an asbestos-free, temperature-resistant sealing gasket. The gasket body is easily installed by incorporating an installation ring. Multiple limiting ports are provided; once installed on equipment, the gasket body can be positioned by engaging with limiting components on the equipment, preventing rotation and improving stability. Furthermore, the gasket body contains memory alloy wires that automatically adjust the local thickness and tightness of the gasket body when the operating temperature rises, compensating for material shrinkage caused by high temperatures and ensuring optimal sealing. This also helps to shape the gasket body and prevent breakage. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the asbestos-free, heat-resistant sealing gasket provided by this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the back side of the gasket body shown;

[0018] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the gasket body.

[0019] The following are the labels in the diagram: 1. Gasket body, 11. Base layer, 12. Temperature resistant layer, 13. Wear-resistant coating, 2. Mounting ring, 3. Limiting port, 4. Shape memory alloy wire, 5. Bevel, 6. Opening groove. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of a preferred embodiment of the asbestos-free, heat-resistant sealing gasket provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the back side of the gasket body shown; Figure 3 for Figure 1 The diagram shows a cross-sectional view of the gasket body. The asbestos-free, temperature-resistant sealing gasket includes: gasket body 1;

[0022] The inner surface of the gasket body 1 is fixedly connected with a mounting ring 2, the inner surface of the mounting ring 2 is provided with a plurality of limiting openings 3, the inside of the gasket body 1 is provided with a memory alloy wire 4, and the front surface of the gasket body 1 is provided with a bevel 5.

[0023] The bevel 5 can make the gasket body 1 better enter when the gasket body 1 is installed on a pipe, and the assembly difficulty is reduced, and the staff is facilitated to install.

[0024] The gasket body 1 comprises a base layer 11, the top and bottom of the base layer 11 are provided with temperature-resistant layers 12, the sides, away from each other, of the two temperature-resistant layers 12 are provided with wear-resistant coatings 13, and the memory alloy wire 4 is distributed in the base layer 11 in a surrounding mode.

[0025] The material of the base layer 11 is rubber, and the rubber can be styrene-butadiene rubber, nitrile rubber or silicone rubber.

[0026] The material of the temperature-resistant layer 12 is polytetrafluoroethylene.

[0027] Polytetrafluoroethylene: the temperature range is about -196~280 DEG C, high and low temperature resistance, acid and alkali resistance, aging resistance, non-stick, good insulation, corrosion resistance, good mechanical toughness, even if the temperature drops to -196 DEG C, can maintain 5% elongation, inert to most chemical drugs and solvents, insoluble in strong acid (including magic acid), strong base and organic solvents.

[0028] The material of the wear-resistant coating 13 is polyimide.

[0029] Polyimide: high tensile strength and modulus, good fatigue resistance and chemical corrosion resistance, also has good insulation performance, maintains dimensional stability in a wide temperature range, is not easy to deform or shrink, has good resistance to acid, alkali and various organic solvents, and can form a protective carbon layer at high temperature, and has a certain self-extinguishing property.

[0030] The thickness of the base layer 11 is 5-12mm, the thickness of the temperature-resistant layer 12 is 1-5mm, and the thickness of the wear-resistant coating 13 is 1-3mm.

[0031] The back surface of the gasket body 1 is provided with a plurality of open grooves 6, and the open grooves 6 can adapt to thermal expansion and contraction of the gasket body 1 during work, and deformation of the gasket body 1 is avoided.

[0032] The working principle of the non-asbestos temperature-resistant sealing gasket provided by the utility model is as follows:

[0033] The installation ring 2 is arranged, so that the gasket body 1 is conveniently installed, a plurality of limiting openings 3 are arranged in the gasket body 1, when the gasket body 1 is installed on equipment, the gasket body 1 is positioned by cooperation of a limiting piece on the equipment and the limiting openings 3, the memory alloy wire 4 is arranged in the gasket body 1, when the working temperature is increased, the local thickness and tightness of the gasket body 1 are automatically adjusted, material shrinkage caused by high temperature is compensated in real time, and it is ensured that the sealing is always in the best state.

[0034] Compared with the related art, the non-asbestos temperature-resistant sealing gasket has the following beneficial effects:

[0035] The installation ring 2 is arranged, so that the gasket body 1 is conveniently installed, a plurality of limiting openings 3 are arranged in the gasket body 1, when the gasket body 1 is installed on equipment, the gasket body 1 is positioned by cooperation of a limiting piece on the equipment and the limiting openings 3, the memory alloy wire 4 is arranged in the gasket body 1, when the working temperature is increased, the local thickness and tightness of the gasket body 1 are automatically adjusted, material shrinkage caused by high temperature is compensated in real time, and it is ensured that the sealing is always in the best state.

[0036] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations using the utility model specification and drawing contents, or direct or indirect application in other related technical fields are all included in the patent protection range of the utility model.

Claims

1. An asbestos-free, temperature-resistant sealing gasket, characterized in that, Include: The gasket body; The inner surface of the gasket body is fixedly connected with a mounting ring, the inner surface of the mounting ring is provided with a plurality of limiting openings, the gasket body is provided with a memory alloy wire inside, and the front surface of the gasket body is provided with a bevel.

2. The non-asbestos temperature-resistant sealing gasket according to claim 1, wherein, The gasket body includes a base layer, the top and bottom of the base layer are provided with temperature-resistant layers, the sides away from each other of the two temperature-resistant layers are provided with wear-resistant coatings, and the memory alloy wire is distributed in the base layer in a surrounding manner.

3. The non-asbestos temperature-resistant sealing gasket of claim 2 wherein, The material of the base layer is rubber.

4. The non-asbestos temperature-resistant sealing gasket of claim 2 wherein, The material of the temperature-resistant layer is polytetrafluoroethylene.

5. The non-asbestos temperature-resistant sealing gasket of claim 2 wherein, The material of the wear-resistant coating is polyimide.

6. The non-asbestos temperature-resistant sealing gasket of claim 2 wherein, The thickness of the base layer is 5-12mm, the thickness of the temperature-resistant layer is 1-5mm, and the thickness of the wear-resistant coating is 1-3mm.

7. The non-asbestos temperature-resistant sealing gasket of claim 1 wherein, The back surface of the gasket body is provided with a plurality of open grooves.

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