Composite gasket with hydrothermal erosion resistance

Abstract

The utility model discloses a composite gasket with water thermal erosion resistance, which relates to the field of composite gaskets, and comprises a first gasket and a second gasket, the top of the first gasket is provided with a drainage part, the drainage part comprises a drainage groove arranged on the top surface of the first gasket, the drainage groove is in a circular ring shape, and the drainage groove is communicated with the drainage groove. A plurality of drainage grooves are formed in the top of the first gasket and surround the drainage groove, and one end of each drainage groove communicates with the drainage groove. Due to the arrangement of the drainage part, the problems that the composite gasket is prone to being eroded by water and short in service life are solved, drainage and drainage of water are achieved, the retention time of the water on the surface of the gasket is shortened, the service life of the gasket is prolonged, the drainage grooves and the drainage grooves are formed in a pressing mode, and protrusions can be formed on the lower surface of the first gasket. And the bulges are clamped in the corresponding annular grooves or clamping grooves, so that the stability of mutual connection between the first gasket and the second gasket is improved.

Description

Technical Field

[0001] The utility model relates to the field of composite gaskets, in particular to a composite gasket with water and heat erosion resistance. Background Art

[0002] Composite gasket is a multifunctional sealing material, usually made of two or more different materials laminated together to provide better sealing performance and the ability to adapt to different working conditions.

[0003] Most of the existing composite gaskets are one-piece structures, and gaskets made of different materials are used to meet the needs of different usage scenarios. However, when the inner or outer side of the gasket is damaged, the entire gasket will be directly discarded or replaced. In particular, composite gaskets used in some special locations are exposed to water and heat erosion for a long time, such as in water heaters. Their service life is greatly reduced, and a large number of waste composite gaskets are generated. Because they are damaged, they cannot be used anymore, resulting in increased costs. In addition, depending on the usage scenario, high-frequency replacement will also affect the reasonable operation of the device using the composite gasket, and more maintenance times need to be arranged, which takes a lot of time and increases the labor intensity of maintenance personnel.

[0004] Therefore, it is necessary to propose a composite gasket with water and heat erosion resistance to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a composite gasket with resistance to water and heat erosion, so as to solve the problem that the composite gaskets used in some special positions are subjected to water and heat erosion for a long time, such as in water heaters, where their service life is greatly reduced, a large number of waste composite gaskets are generated, and costs are increased. Frequent replacement will also affect the reasonable operation of the device using the composite gasket, requiring frequent maintenance, which will take a lot of time and increase the labor intensity of maintenance personnel.

[0006] To achieve the above object, the present invention provides the following technical solution: a composite gasket with water and heat erosion resistance, comprising a first gasket and a second gasket, wherein a drainage portion is provided on the top of the first gasket, and the drainage portion comprises:

[0007] A drainage groove is arranged on the top surface of the first gasket, and the drainage groove is in a circular shape. A plurality of drainage grooves are arranged on the top of the first gasket, and the plurality of drainage grooves surround the drainage groove. One end of the drainage groove is connected to the drainage groove, and the other end of the drainage groove extends to the edge of the top of the first gasket.

[0008] Preferably, a groove is provided on the inner circle of each of the first gasket and the second gasket on the side close to each other, and the two grooves are interconnected to form an annular groove structure;

[0009] A sealing ring is provided between the first gasket and the second gasket, and the sealing ring is installed in the inner cavity of the groove.

[0010] Preferably, the drainage groove and the drainage groove are formed by pressing, and there are protrusions on the lower surface of the first gasket at positions corresponding to the drainage groove and the drainage groove;

[0011] The upper surface of the sealing ring is provided with an annular groove and a clamping groove, and a plurality of clamping grooves are provided, and the plurality of clamping grooves are distributed at equal angles along the axis of the sealing ring;

[0012] The protrusion below the corresponding drainage groove is engaged in the annular groove, and the protrusion below the corresponding drainage groove is engaged in the corresponding groove.

[0013] Preferably, an arc-shaped plate is provided on the top of the first gasket, and a plurality of arc-shaped plates are provided, with four arc-shaped plates forming a group and forming an annular structure, and each group of annular structures is nested inside and outside.

[0014] Preferably, the first gasket and the second gasket are both annular metal structures, and the sealing ring is an annular non-metallic structure.

[0015] The technical effects and advantages of this utility model are:

[0016] 1. The setting of the drainage part solves the problem that the composite gasket is easily eroded by water and has a short service life. It realizes the drainage of water, reduces the residence time of water on the gasket surface, and increases the service life of the gasket;

[0017] 2. Based on the drainage groove and the drainage groove being formed by pressing, a protrusion can be formed on the lower surface of the first gasket, and the protrusion is engaged in the corresponding annular groove or the card groove, thereby increasing the stability of the connection between the first gasket and the second gasket;

[0018] 3. When the ambient temperature of the first gasket or the second gasket is high, the first gasket expands thermally, so that the protrusion is more stably engaged in the annular groove or the card groove, which also increases the waterproof sealing effect and solves the problem of the gasket's waterproof sealing performance decreasing in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the composite gasket structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the composite gasket sealing ring of the utility model.

[0021] Figure 3 This is a cross-sectional view of the drainage portion of the composite gasket of the present invention.

[0022] In the figure: 1, first gasket; 2, second gasket; 3, drainage groove; 4, drainage groove; 5, groove; 6, sealing ring; 7, annular groove; 8, clamping groove; 9, arc plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides Figure 1-Figure 3 A composite gasket with water and heat erosion resistance shown in FIG. includes a first gasket 1 and a second gasket 2, and the first gasket 1 and the second gasket 2 can be separated from each other. A drainage portion is provided on the top of the first gasket 1, and the drainage portion includes:

[0025] A drainage groove 3 is provided on the top surface of the first gasket 1, and the drainage groove 3 is in a circular shape. A plurality of drainage grooves 4 are provided on the top of the first gasket 1. The plurality of drainage grooves 4 surround the drainage groove 3, and one end of the drainage groove 4 is connected to the drainage groove 3, and the other end of the drainage groove 4 extends to the edge of the top of the first gasket 1. An arc plate 9 is provided on the top of the first gasket 1. There are multiple arc plates 9, and four arc plates 9 are a group and form an annular structure. Each group of annular structures is nested inside and outside. The condensed water on the surface of the first gasket 1 gradually converges to form flowing water droplets under the guidance of the arc plates 9, and the water droplets flow to the inner part of the nearest drainage groove 4 below after being drained by the arc plates 9 and flow out to the outside. The water flow will also clean the surface of the first gasket 1 and remove some dust, etc. There are grooves on the surface of the first gasket 1 that are interconnected, which can blow in external wind to cool down and reduce heat erosion, and can also accelerate the discharge of internal water droplets.

[0026] A groove 5 is provided on the inner circle of the first gasket 1 and the second gasket 2 on the side close to each other, and the two grooves 5 are connected to each other to form an annular groove structure;

[0027] A sealing ring 6 is provided between the first gasket 1 and the second gasket 2. The sealing ring 6 is installed in the inner cavity of the groove 5. When the first gasket 1 and the second gasket 2 are separated, the sealing ring 6 can also be removed. When any object is damaged, it can be replaced at any time. In addition, the waste parts can be recycled because of their single material. In addition, the composite gasket is usually clamped by two parts when in use, so it will not fall off during use.

[0028] The setting of the drainage part solves the problem that the composite gasket is easily corroded by water and has a short service life. It realizes the drainage of water, reduces the residence time of water on the gasket surface, and increases the service life of the gasket.

[0029] Because the drainage groove 3 and the drainage groove 4 are formed by pressing, a protrusion can be formed on the lower surface of the first gasket 1, and the protrusion is engaged in the corresponding annular groove 7 or the card groove 8, thereby increasing the stability of the connection between the first gasket 1 and the second gasket 2.

[0030] When the operating environment temperature of the first gasket 1 or the second gasket 2 is high, the first gasket 1 undergoes thermal expansion, which makes the protrusion more stably engaged in the annular groove 7 or the card groove 8, and also increases the waterproof sealing effect, solving the problem of the gasket's waterproof sealing performance degradation in a high temperature environment.

[0031] In the prior art, composite gaskets are made of different materials, and different materials have different thermal expansion coefficients. Therefore, when the composite gasket is affected by heat, it is easy for the layers to separate from each other, causing cracks in the gasket. In the present invention, the composite gasket is composed of a first gasket 1, a second gasket 2 and a sealing ring 6. The first gasket 1 and the second gasket 2 are made of the same material, such as the same metal material, which solves the problem of easy separation between layers due to different thermal expansion coefficients.

[0032] In the prior art, due to the high sealing requirements and in order to adapt to the sealing requirements in different temperature environments, composite gaskets are usually made of different materials. Since the first gasket 1 and the sealing ring 6 are improved, the purpose of maintaining good sealing even at higher temperatures is achieved. Therefore, the first gasket 1 and the second gasket 2 do not need to be made of different materials, avoiding the problem of easy separation between layers due to different thermal expansion coefficients of the materials.

[0033] The first gasket 1 and the second gasket 2 are both annular metal structures, and the sealing ring 6 is an annular non-metallic structure, wherein the first gasket 1 and the second gasket 2 are used to withstand external pressure, play a buffering role, increase pressure resistance, and improve service life. The sealing ring 6 plays a sealing role and is made of non-metallic materials such as rubber, which has the advantages of good waterproof effect, good sealing, and low cost. Therefore, the sealing ring 6 is usually mounted on the surface of a columnar body such as a threaded rod for sealing, and the other end will also contact the first gasket 1 and the second gasket 2 to prevent water leakage between the first gasket 1 and the second gasket 2.

Claims

1. A composite gasket having water and heat erosion resistance, comprising a first gasket (1) and a second gasket (2), characterized in that: A drainage portion is provided on the top of the first gasket (1), and the drainage portion comprises: A drainage groove (3) is provided on the top surface of the first gasket (1), and the drainage groove (3) is annular. A plurality of drainage grooves (4) are provided on the top of the first gasket (1), and the plurality of drainage grooves (4) surround the drainage groove (3), and one end of the drainage groove (4) is connected to the drainage groove (3), and the other end of the drainage groove (4) reaches the edge of the top of the first gasket (1).

2. The composite gasket having water and heat erosion resistance according to claim 1, characterized in that: A groove (5) is provided at the inner circle of the first gasket (1) and the second gasket (2) on the side close to each other, and the two grooves (5) are interconnected to form an annular groove structure; A sealing ring (6) is provided between the first gasket (1) and the second gasket (2), and the sealing ring (6) is installed in the inner cavity of the groove (5).

3. The composite gasket having water and heat erosion resistance according to claim 2, characterized in that: The drainage groove (3) and the drainage groove (4) are formed by pressing, and there are protrusions on the lower surface of the first gasket (1) at positions corresponding to the drainage groove (3) and the drainage groove (4); The upper surface of the sealing ring (6) is provided with an annular groove (7) and a clamping groove (8), and a plurality of clamping grooves (8) are provided, and the plurality of clamping grooves (8) are distributed at equal angles along the axis of the sealing ring (6); The protrusion below the corresponding drainage groove (3) is engaged in the annular groove (7), and the protrusion below the corresponding drainage groove (4) is engaged in the corresponding engaging groove (8).

4. The composite gasket having water and heat erosion resistance according to claim 1, characterized in that: An arc-shaped plate (9) is provided on the top of the first gasket (1), and a plurality of arc-shaped plates (9) are provided, with four arc-shaped plates (9) forming a group and forming an annular structure, and each group of annular structures is nested inside and outside.

5. The composite gasket having water and heat erosion resistance according to claim 2, characterized in that: The first gasket (1) and the second gasket (2) are both annular metal structures, and the sealing ring (6) is an annular non-metallic structure.

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