Elastic sealing gasket

Abstract

The utility model relates to the technical field of gaskets, in particular to an elastic sealing gasket which comprises a gasket strip, a bonding layer is arranged on one side face of the gasket strip, and the gasket strip is bonded and wound into a circle to be arranged at a sealing position. The gasket strip comprises a base layer, an elastic layer and a corrosion-resistant layer which are sequentially arranged, and a high-temperature-resistant layer is arranged on the side, away from the elastic layer, of the base layer; a metal net layer is arranged at the joint of the elastic layer and the base layer; according to the utility model, the cuttable gasket strip is arranged, the cuttable gasket strip can be bonded and wound into a circle through the bonding layer, and then the wound gasket is mounted at the sealing connection part, so that the sealing treatment of the connection part can be flexibly realized through the deformation characteristic of the gasket strip, and the current situation that the size of the existing gasket is fixed and the universality is poorer is changed.

Description

Technical Field

[0001] This utility model relates to the field of gasket technology, and in particular to an elastic sealing gasket. Background Technology

[0002] In industrial production and civil facilities, gaskets are key components for preventing fluid leakage, and their performance directly affects the safety and stability of equipment operation.

[0003] In industrial production, gaskets are crucial components for ensuring the sealing of equipment and piping systems. Their performance and applicability directly affect the stable operation and safety of the system. Currently, most mainstream gaskets on the market adopt a fixed-size annular structure. While this traditional design is widely used to a certain extent, its limitations are becoming increasingly apparent with the development of modern industry. The size and shape of equipment and pipeline interfaces vary greatly across different industrial scenarios, ranging from interfaces of tiny precision instruments to connections in large industrial pipelines, with a wide range of specifications. Fixed-size annular gaskets, due to their relatively uniform size and specifications, cannot flexibly adapt to these complex and varied interface conditions, severely limiting their versatility and failing to meet diverse sealing requirements. Taking the petrochemical industry as an example, this field involves numerous complex processes. The specifications of various reactors and pipelines differ due to varying process requirements, ranging from large reactors with diameters of several meters to pipelines of varying diameters, resulting in a rich variety of interface sizes and shapes. During equipment upgrades or technological transformations, if the original interface specifications change, it is often necessary to customize new, compatible gaskets. The customization process not only requires a lot of time for design, production and debugging, but also involves high mold development costs, which greatly increases production costs.

[0004] In the field of pipeline sealing, wrapping with PTFE tape remains a common sealing method. PTFE tape relies on its own plastic deformation to fill the sealing gaps, but this sealing method has many drawbacks. The sealing effect of PTFE tape is greatly affected by the operator's technique, wrapping force, and number of turns, making it difficult to guarantee consistent and reliable sealing. In high-pressure, high-temperature, or corrosive media environments, PTFE tape is prone to aging, deformation, or corrosion, leading to a rapid decline in sealing performance and causing leakage accidents. Furthermore, PTFE tape easily leaves debris during use. This debris, once it enters the pipeline system, may clog the pipes or damage internal equipment parts, affecting the normal operation of the entire system. Summary of the Invention

[0005] The purpose of this invention is to provide an elastic sealing gasket that improves the poor versatility of fixed-size gaskets and the unsatisfactory sealing effect of PTFE tape.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An elastic sealing gasket includes a gasket strip with an adhesive layer on one side. The gasket strip is bonded and wound into a ring and placed at the sealing point. The gasket strip includes a base layer, an elastic layer, and a corrosion-resistant layer arranged in sequence. A high-temperature resistant layer is provided on the side of the base layer away from the elastic layer. A metal mesh layer is provided at the junction of the elastic layer and the base layer.

[0008] Furthermore, the base layer is made of fiber woven material; the elastic layer is made of rubber material; the corrosion-resistant layer is made of polytetrafluoroethylene material; and the high-temperature resistant layer is made of ceramic fiber material.

[0009] Furthermore, several evenly distributed grooves are provided on the surface of the base layer, and the grooves are filled with thermally conductive silicone.

[0010] Furthermore, an anti-slip texture is provided on the surface of the corrosion-resistant layer, which is produced by a rolling process.

[0011] Furthermore, the base layer, metal mesh layer, and elastic layer are bonded together with an adhesive and then statically cured by roller pressing.

[0012] Furthermore, the high-temperature resistant layer is connected to the base layer by an adhesive; the high-temperature resistant layer is also connected to the outside of the elastic layer by an adhesive.

[0013] The beneficial effects of adopting the technical solution of this utility model are:

[0014] 1. This utility model features a cuttable gasket strip, and the cut gasket strip can be bonded and wound into a circle through an adhesive layer. The wound gasket is then installed at the sealing connection, and the sealing treatment of the connection can be achieved through the deformation characteristics of the gasket strip, which changes the current situation where the gasket size is fixed and the versatility is poor.

[0015] 2. The base layer of this utility model is made of high-strength fiber weaving, which gives the gasket strip excellent mechanical strength; the elastic layer can respond quickly to external pressure and undergo elastic deformation, thus tightly adhering to the sealing surface; the corrosion-resistant layer effectively resists erosion, ensuring that the sealing gasket can be used for a long time in complex and harsh chemical environments without being corroded or damaged. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2This is a schematic diagram of the gasket strip in this utility model;

[0019] Figure 3 This is a first schematic diagram of the fit between the gasket and the pipe in this utility model;

[0020] Figure 4 This is a second schematic diagram showing the fit between the gasket and the pipe in this utility model.

[0021] The markings in the diagram are: 1. Base layer; 2. Metal mesh layer; 3. Elastic layer; 4. Corrosion-resistant layer; 5. High-temperature resistant layer; 6. Gasket strip; 7. Adhesive layer; 8. Pipe. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. Unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0023] like Figure 2 , Figure 3 , Figure 4 As shown, in order to manufacture corresponding high-match gaskets according to different usage scenarios and improve the flexibility of gasket use, this embodiment provides a cuttable gasket strip 6. When using the gasket strip 6 to seal the connection, the gasket strip 6 can be cut to the appropriate size according to the actual situation, and the adhesive layer 7 set on the side wall of the gasket strip 6 can be peeled off, so that the cut gasket strip 6 is rolled into a circle to form the corresponding gasket. Then, the rolled gasket is installed at the sealing connection, and the sealing treatment of the connection can be achieved by the deformation characteristics of the gasket strip 6. For example, the gasket made by cutting and splicing can be fitted onto the pipe 8.

[0024] like Figure 1As shown, to achieve the deformation, high temperature, high pressure, and corrosion resistance properties of the gasket strip 6, the gasket strip 6 is composed of a base layer 1, an elastic layer 3, a corrosion-resistant layer 4, and a high-temperature resistant layer 5. The base layer 1, serving as the supporting foundation of the entire sealing gasket, is meticulously made of high-strength fiber woven material. This material, with its tightly interwoven fiber structure, gives the base layer 1 excellent mechanical strength, allowing it to maintain a stable shape even under significant pressure, and exhibiting excellent dimensional stability, effectively avoiding deformation problems caused by external forces or environmental factors. The elastic layer 3 is located on one side of the base layer 1, and its main material is highly elastic rubber. When the sealing gasket is subjected to external pressure, the elastic layer 3 can respond quickly, undergoing elastic deformation, and then tightly adhering to the sealing surface, meticulously filling the tiny gaps on the sealing surface, acting like precise "wedges" to completely seal any potential leakage channels, effectively achieving a sealing function. The corrosion-resistant layer 4 is uniformly covered on the surface of the elastic layer 3. It is made of high-performance polytetrafluoroethylene (PTFE), which, due to its unique molecular structure, possesses excellent chemical stability. When facing various corrosive media, such as strong acids, strong alkalis, and highly oxidizing chemicals, it forms an indestructible protective barrier, effectively resisting erosion and ensuring the gasket remains uncorroded and undamaged in complex and harsh chemical environments. The high-temperature resistant layer 5 is located on the other side of the base layer 1 and is made of ceramic fiber. Ceramic fiber has excellent high-temperature resistance; even in high-temperature environments, its internal crystal structure remains stable, preventing the gasket from deforming, softening, or even being damaged at high temperatures, thus ensuring its normal operation under high-temperature conditions. The highly elastic rubber material of the elastic layer 3 can tightly adhere to the sealing surface under pressure, filling gaps and achieving a good sealing effect. Simultaneously, the anti-slip texture increases friction with the sealing surface, further ensuring the stability of the gasket and preventing leakage. The corrosion-resistant layer 4, made of polytetrafluoroethylene, effectively resists the erosion of various corrosive media, greatly extending the service life of the gasket and reducing the frequency of seal failure and replacement due to corrosion. The high-temperature resistant layer 5, made of ceramic fiber, can withstand high-temperature environments. Even under high-temperature conditions, the gasket will not deform or be damaged, ensuring the stability of the sealing performance.

[0025] Several evenly distributed grooves can be formed on the surface of the base layer 1. These grooves are arranged regularly, and their depth and width are adapted to specific thermal conductivity requirements. The grooves are tightly filled with thermally conductive silicone, which has excellent thermal conductivity. During the actual use of the sealing gasket, when heat is generated due to factors such as friction and pressure, the thermally conductive silicone can quickly play its role, transferring the heat away with its efficient thermal conductivity, effectively avoiding the problem of excessive temperature caused by excessive local heat accumulation, thereby greatly reducing the negative impact on the performance of the sealing gasket.

[0026] A specially designed metal mesh layer 2 is embedded between the elastic layer 3 and the base layer 1. This metal mesh layer is manufactured using a weaving process, resulting in a fine and uniform mesh structure that effectively increases the contact area between the elastic layer 3 and the base layer 1. This characteristic significantly enhances the connection strength between the elastic layer 3 and the base layer 1, greatly preventing separation due to various external forces and environmental factors during long-term, complex use, thus ensuring the stability and reliability of the entire sealing gasket structure. The metal mesh layer enhances the connection strength between the elastic layer 3 and the base layer 1, making the sealing gasket structure more stable during use, less prone to delamination, and ensuring continuous and effective sealing performance.

[0027] The surface of the corrosion-resistant layer 4 is provided with anti-slip textures. These anti-slip textures are regularly distributed in a staggered pattern, designed to significantly increase the friction between the gasket and the sealing surface. During the installation of the gasket, the anti-slip textures effectively prevent the gasket from sliding due to improper operation, ensuring correct installation position. Even under complex operating conditions such as vibration and pressure fluctuations during long-term use, the anti-slip textures continue to function, preventing gasket displacement, thereby ensuring the stable operation of the sealing system and significantly improving sealing performance and equipment reliability.

[0028] To produce the aforementioned gasket strip 6, the following steps can be followed:

[0029] Base layer 1 fabrication: High-strength glass fiber woven material is selected and woven into a base layer 1 board with a certain thickness and size. Several evenly distributed grooves are made on the surface of the base layer 1 board by mechanical processing.

[0030] Thermally conductive silicone filling: The thermally conductive silicone is evenly filled into the groove of the base layer 1 to ensure full filling and a smooth surface.

[0031] Metal mesh layer setup: Cut a metal mesh layer of appropriate size and lay it on the side surface of the base layer 1 where the elastic layer 3 is located. Fix the metal mesh layer to the base layer 1 with adhesive. Use a roller press to slowly roll from one end to the other to remove the air between the metal mesh layer and the base layer 1, so that the two are tightly bonded.

[0032] Elastic layer 3 is made by selecting a blend of natural rubber and nitrile rubber and processing it through mixing, vulcanization and other processes to make an elastic layer 3 with a certain elasticity and thickness. The elastic layer 3 is then pasted onto the metal mesh layer to ensure a firm bond. The elastic layer 3 and the metal mesh layer are connected by the roller pressing method described above.

[0033] Corrosion-resistant layer 4 is made by molding polytetrafluoroethylene material into corrosion-resistant layer 4. Anti-slip texture is made on the surface of corrosion-resistant layer 4 by rolling process. Then, corrosion-resistant layer 4 is pasted on the surface of elastic layer 3.

[0034] High-temperature resistant layer 5 is made by selecting ceramic fiber material and making a high-temperature resistant layer 5 with a certain thickness through needle punching process. The high-temperature resistant layer 5 is then pasted onto the surface of the base layer 1 on the side where the elastic layer 3 is not set.

[0035] The above embodiments based on this utility model are provided for guidance. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. Any modifications, equivalent substitutions, improvements, etc., within the spirit and principles of this invention should be included within the protection scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An elastomeric gasket, characterized by: The gasket strip (6) is provided with a sticky layer (7) on one side, and is wound into a ring and arranged at a sealing position; the gasket strip (6) comprises a base layer (1), an elastic layer (3) and a corrosion-resistant layer (4) arranged in sequence, and a high-temperature-resistant layer (5) is arranged on the side of the base layer (1) away from the elastic layer (3); a metal mesh layer (2) is arranged at the joint of the elastic layer (3) and the base layer (1).

2. A resilient sealing gasket according to claim 1, wherein: The base layer (1) is made of fiber woven material; the elastic layer (3) is made of rubber material; the corrosion-resistant layer (4) is made of polytetrafluoroethylene material; and the high-temperature-resistant layer (5) is made of ceramic fiber material.

3. A resilient sealing gasket according to claim 2, wherein: A plurality of uniformly distributed grooves are arranged on the surface of the base layer (1), and the grooves are filled with heat-conducting silica gel.

4. A resilient sealing gasket according to claim 3, wherein: Anti-slip textures are arranged on the surface of the corrosion-resistant layer (4), and the anti-slip textures are made by rolling process.

5. A resilient gasket as defined in claim 1, wherein: The base layer (1), the metal mesh layer (2) and the elastic layer (3) are connected by an adhesive, and are cured by rolling.

6. A resilient gasket as defined in claim 1, wherein: The high-temperature-resistant layer (5) is connected to the base layer (1) by an adhesive; and the high-temperature-resistant layer (5) is installed on the outer side of the elastic layer (3) by an adhesive.

Images