Pressure-resistant anti-loose metal rubber strip sealing gasket

Abstract

The utility model provides a kind of pressure-resistant anti-relaxation metal rubber strip sealing gasket, belong to sealing gasket technical field.It includes sealing gasket metal base plate, the medium passes through hole is equipped in the middle of sealing gasket metal base plate, rubber strip installation groove is correspondingly equipped in the upper and lower position of the two sides of one perimeter of sealing gasket metal base plate close to medium passes through hole, annular sealing rubber strip is equipped in rubber strip installation groove, and bolt mounting hole is uniformly distributed on the circumference of sealing gasket metal base plate.The utility model is made into sealing gasket by the composite structure of metal and rubber, with high strength and good sealing, greatly improve the sealing performance of sealing gasket, solve the problem of existing technology that sealing gasket is easy to relax, high-pressure sealing and cost.

Description

Technical Field

[0001] This utility model belongs to the field of sealing gasket technology, specifically relating to a pressure-resistant and anti-loosening metal rubber strip sealing gasket, which is particularly suitable for sealing the joint surfaces of automobiles, high-speed trains, industrial sewing machines, petroleum machinery, etc. Background Technology

[0002] In mechanical equipment, gaskets are critical components for preventing fluid leakage. Currently used metal-rubber thread gaskets cannot be directly applied to the sealing surface; high-precision grooves must be machined on the flange face. For complex sealing line shapes, machining grooves on the flange face is very costly. Furthermore, currently used metal-rubber thread gaskets have limitations: the rubber thread thickness cannot exceed 0.06mm; if the thickness exceeds 0.06mm, seal crushing during assembly can occur, leading to seal failure. Additionally, the gaskets can generally withstand media pressures not exceeding 1MPa.

[0003] Traditional flange rubber strip grooved sealing structures suffer from high groove processing costs, which increase even more for complex circuit shapes. This pressure-resistant, anti-loosening metal-rubber strip gasket features metal plate grooves formed by stamping, resulting in very low groove costs. Furthermore, the grooved design effectively overcomes the torque attenuation problem of the sealing assembly bolts. Existing metal-rubber strip gaskets, lacking stop mechanisms, are at risk of torque attenuation and require a flange sealing surface flatness requirement of less than 0.05mm, failing to meet sealing requirements for media pressures exceeding 2.5MPa. This pressure-resistant, anti-loosening metal-rubber strip gasket, however, can withstand high-pressure media sealing requirements exceeding 2.5MPa, while having lower flange surface flatness requirements, typically less than 0.15mm. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a pressure-resistant and anti-loosening metal rubber strip sealing gasket. This utility model solves the problems of easy loosening and high pressure sealing media resistance of the sealing gasket in the prior art through a unique structural design.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A pressure-resistant and anti-loosening metal rubber strip sealing gasket includes a sealing gasket metal substrate. The sealing gasket metal substrate has a medium passage hole in the middle. Rubber strip mounting grooves are provided on the upper and lower positions of two sides of the periphery of the sealing gasket metal substrate near the medium passage hole. An annular sealing rubber strip is provided inside the rubber strip mounting groove. Bolt mounting holes are evenly distributed around the circumference of the sealing gasket metal substrate.

[0006] As a further limitation of the above scheme, the rubber strip mounting groove is a rectangular groove structure.

[0007] Further defining the above solution, the cross-section of the sealing rubber strip is semi-circular with the arc surface facing upwards, extending above the surface of the sealing gasket metal substrate.

[0008] Further specifying the above solution, the sealing rubber strip is made of hydrogenated nitrile rubber, nitrile rubber, fluororubber, silicone rubber, fluorosilicone rubber, or acrylate rubber materials.

[0009] Further specifying the above solution, the sealing gasket metal substrate is made of aluminum alloy plate, stainless steel plate or other metal plate, with a thickness greater than 1.0 mm.

[0010] Further defining the above solution, the sealing rubber strip and the rubber strip mounting groove are integrated into one piece through a high-temperature vulcanization molding process.

[0011] Advantages of this utility model compared to the prior art: 1. In this solution, the metal sheet is processed by stamping to complete the groove, which significantly reduces the cost of processing grooves on the flange surface; 2. The metal plate groove limiting design in this solution effectively overcomes the problems of torque attenuation of sealing assembly bolts and crushing of sealing strips; 3. This solution reduces the flatness requirement of the flange face, thereby reducing the processing cost of the flange face; 4. This solution allows for the selection of appropriate material combinations based on different working conditions. It features a simple structure, low cost, and long service life; it is suitable for harsh working conditions such as high pressure and high temperature. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the circular rubber sealing gasket structure of this utility model; Figure 2 This utility model Figure 1 Schematic diagram of section AA in the diagram; Figure 3 This is an enlarged schematic diagram of the semi-circular cross-section of the sealing rubber strip in this utility model; Figure 4 This is a schematic diagram of the structure of the irregularly shaped rubber sealing gasket in this utility model; Figure 5 This utility model Figure 4 Schematic diagram of the BB section in the diagram; Figure 6 This is a schematic diagram of the structure of the irregularly shaped rubber sealing gasket II in this utility model; Figure 7 This utility model Figure 6 A schematic diagram of the CC section. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0014] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0015] Please see Figure 1-7 The embodiments of this utility model are described in detail below.

[0016] Example: See Figure 1-7 The circular rubber sealing gasket structure and the irregular rubber sealing gasket structure shown are: pressure-resistant and anti-loosening metal rubber strip sealing gasket, including sealing gasket metal substrate 1, the sealing gasket metal substrate 1 is provided with a medium passage hole 2 in the middle, and rubber strip mounting grooves 3 are provided on the upper and lower positions of the two sides of the periphery of the sealing gasket metal substrate 1 near the medium passage hole 2. The rubber strip mounting groove 3 is provided with an annular sealing rubber strip 4 inside, and bolt mounting holes 5 are evenly distributed around the circumference of the sealing gasket metal substrate 1.

[0017] See Figure 3 As shown, the sealing rubber strip 4 has a semi-circular cross-section 4-1 with the arc surface facing upwards, protruding above the surface of the sealing gasket metal substrate 1. Preferably, the sealing rubber strip 4 has a serrated arc surface with the serrations facing upwards, protruding above the surface of the sealing gasket metal substrate 1. The rubber strip mounting groove 3 has a rectangular groove structure. The bottom surface of the rubber strip mounting groove 3 is a serrated surface, used to contact the bottom surface of the sealing rubber strip 4 to enhance the bonding strength.

[0018] Preferably, the sealing rubber strip 4 is made of hydrogenated nitrile rubber, nitrile rubber, fluororubber, silicone rubber, fluorosilicone rubber, or acrylate rubber materials.

[0019] Preferably, the sealing gasket metal substrate 1 is made of aluminum alloy plate, stainless steel plate or other metal plate, with a thickness greater than 1.0 mm.

[0020] Preferably, the sealing rubber strip 4 and the rubber strip mounting groove 3 are integrated into one piece through a high-temperature vulcanization molding process.

[0021] The manufacturing process of this utility model is as follows: First, the metal substrate of the sealing gasket is machined and shaped. Then, the sealing rubber strip is placed in the rubber strip installation groove. Finally, the rubber and metal are firmly bonded by high-temperature vulcanization molding.

[0022] The working principle of this invention is as follows: When the sealing gasket is tightened by bolts, the metal substrate of the sealing gasket provides structural support, and the sealing rubber strip deforms under pressure to form a line seal. The mechanical interlocking structure formed by the rubber strip mounting groove and the rubber prevents the rubber strip from shifting under pressure, and the serrated surface design further enhances the bonding strength. The high strength of the metal substrate prevents overall loosening, while the elasticity of the rubber ensures sealing performance.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure-resistant, slack-preventing metal-rubber strip seal gasket, characterized in that: The device includes a sealing gasket metal substrate (1), which has a medium passage hole (2) in the middle. Rubber strip mounting grooves (3) are provided on both sides of the periphery of the sealing gasket metal substrate (1) near the medium passage hole (2), and an annular sealing rubber strip (4) is provided inside the rubber strip mounting groove (3). Bolt mounting holes (5) are evenly distributed around the circumference of the sealing gasket metal substrate (1).

2. The pressure resistant anti-relaxation metal rubber strip gasket of claim 1, wherein: The rubber strip installation groove (3) is a rectangular groove structure.

3. The pressure resistant anti-relaxation metal rubber strip gasket of claim 2, wherein: The cross-section of the sealing rubber strip (4) is semi-circular (4-1) with the arc surface facing upwards, and it extends above the surface of the sealing gasket metal substrate (1) according to the specific compression ratio requirements.

4. The pressure resistant anti-relaxation metal rubber strip gasket of claim 1, wherein: The sealing rubber strip (4) is made of hydrogenated nitrile butadiene rubber, nitrile butadiene rubber, fluororubber, silicone rubber, fluorosilicone rubber, or acrylate rubber.

5. The pressure resistant anti-relaxation metal rubber strip gasket of claim 1, wherein: The sealing gasket metal substrate (1) is made of aluminum alloy plate or stainless steel plate with a thickness greater than 1.0 mm.

6. The pressure resistant anti-relaxation metal rubber strip gasket of claim 1, wherein: The sealing rubber strip (4) and the rubber strip installation groove (3) are integrated into one piece through a high-temperature vulcanization molding process.

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