Gasket and valve device

Abstract

The utility model relates to the technical field of valves, and particularly discloses a sealing gasket and a valve device. The valve device includes: a valve body having a plurality of external flow passage ports; the valve element is arranged in the valve body, at least one valve element flow channel is formed in the valve element, and the valve element can be driven to rotate so as to switch the communication relation between the at least one valve element flow channel and the multiple external flow channel openings; the sealing gasket is located at the connecting position of each external flow channel opening and the valve element flow channel and comprises a supporting framework of an annular structure. The sealing element is made of a flexible material, and the sealing element and the supporting framework are integrally formed; the supporting framework is provided with a plurality of supporting parts, and the multiple supporting parts are arranged in the circumferential direction of the supporting framework; at least part of the sealing element is located between two adjacent supporting parts. At least part of the sealing element is arranged between the two adjacent supporting parts, stress can be better dispersed when the sealing element is stressed, and therefore the risk of local deformation and damage of the sealing element is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technology field especially relates to a sealing gasket and valve device. BACKGROUND

[0002] Valve devices are widely used in many industrial fields for controlling the flow of fluids. The sealing performance is crucial to ensure that the fluid flows along the predetermined path and prevents leakage.

[0003] In traditional ball valve devices, in order to meet the reliable sealing performance, the sealing gasket skeleton is often used to support the sealing gasket, and then the interference of the sealing gasket is used to achieve the sealing effect, so as to achieve the purpose of little or no leakage.

[0004] The sealing gasket skeleton and the sealing gasket are usually fixed by gluing. In the long-term operation process, affected by complex working conditions such as high and low temperature and high and low pressure environment, the size and shape of the sealing gasket parts will change, the sealing gasket or the sealing gasket skeleton is easy to deform, and the disengagement phenomenon occurs at the connection position, so that the valve core sealing surface deviates from the normal contact, resulting in unstable interference of the sealing gasket circumference, which affects the sealing performance.

[0005] Therefore, a new sealing gasket structure is needed to improve the sealing performance and reliability of the valve device. SUMMARY

[0006] The utility model aims at providing a sealing gasket structure to improve the sealing performance and reliability of the valve device.

[0007] To achieve the above-mentioned purpose, the utility model provides a sealing gasket applied to a valve device, wherein the valve device comprises:

[0008] A valve body has a plurality of external flow channel openings;

[0009] A valve core is arranged in the valve body, and at least one valve core flow channel is arranged in the valve core. The valve core can be driven to rotate to switch the communication relationship between the at least one valve core flow channel and the plurality of external flow channel openings;

[0010] The sealing gasket is located at the connection position of each external flow channel opening and the valve core flow channel, and the sealing gasket comprises:

[0011] A support skeleton is in a ring structure;

[0012] A sealing element is made of flexible material and is integrally formed with the support skeleton;

[0013] The support framework has a plurality of support portions arranged circumferentially along the support framework; at least part of the sealing element is located between two adjacent support portions.

[0014] By arranging at least part of the sealing element between two adjacent support portions, the sealing element can better disperse stress when under stress, so that the sealing element does not concentrate on one point when subjected to fluid pressure or other external forces, thereby reducing the risk of local deformation and damage of the sealing element. At the same time, the presence of the support portions provides additional support for the sealing element, enhancing the rigidity of the sealing element, thereby maintaining the shape and position of the sealing element stable, ensuring that it does not deform or shift during long-term use, thereby improving the reliability and service life of the sealing gasket.

[0015] As a further improvement of the utility model, an accommodation space is formed between two adjacent support portions.

[0016] At least part of the plurality of accommodation spaces on the support framework is configured to penetrate the support framework, and at least one end of the two ends in the thickness direction of the support framework is open.

[0017] During the integral molding (injection molding) of the support framework and the sealing element, at least one end of the two ends of the accommodation space in the thickness direction of the support framework is open, so that the material of the sealing element can be filled into the accommodation space, thereby enabling the sealing element to be uniformly distributed around the support framework and ensuring the close combination between the sealing element and the support framework. After the sealing element is filled into the accommodation space, a mechanical interlocking structure is formed with the support framework, so that the combination between the sealing element and the support framework is more firm and is not easy to relatively displace or separate during use.

[0018] As a further improvement of the utility model, an accommodation space is formed between two adjacent support portions.

[0019] At least part of the plurality of accommodation spaces on the support framework includes a first chamber and a second chamber arranged at intervals in the thickness direction of the support framework; in the thickness direction of the support framework, the first chamber and the second chamber are open at one end of the surface of the support framework.

[0020] By arranging the first cavity and the second cavity in the thickness direction of the support framework, the first cavity and the second cavity are both provided with openings in the thickness direction of the support framework, and the sealing element can be filled into the first cavity and the second cavity respectively during the injection molding process. The filling mode of the sealing element in this way can be more evenly distributed around the support framework, ensuring the close combination between the sealing element and the support framework. At the same time, it is also helpful to improve the filling quality of the sealing element, and the sealing element can flow and fill better during the injection molding process, reducing the molding defects.

[0021] As a further improvement of the utility model, the cross-sectional shape of the accommodating space in the thickness direction of the support framework is any one of dovetail, circle, rectangle, trapezoid and triangle.

[0022] By arranging a suitable cross-sectional shape, the close combination between the sealing element and the support framework can be improved, thereby improving the sealing performance of the sealing gasket. For example, the dovetail cross-section can prevent the displacement of the sealing element under stress, the circular cross-section can reduce the local stress concentration of the sealing element, the rectangular cross-section can increase the contact area of the sealing element, the trapezoidal cross-section can improve the pressure resistance of the sealing element, and the triangular cross-section can enhance the stability of the sealing element.

[0023] As a further improvement of the utility model, the radial outer edges of the two adjacent support parts are connected to each other to form the side wall of the accommodating space.

[0024] By connecting the radial outer edges of the two adjacent support parts to each other to form the side wall of the accommodating space, the structure of the accommodating space is more complete and stable, which can effectively prevent the deformation or damage of the accommodating space under stress. Specifically, the formation of the side wall enhances the rigidity of the support framework, which can better support the sealing element, and the rigidity helps to improve the reliability and service life of the sealing gasket under harsh working conditions such as high pressure and high temperature. At the same time, the side wall of the accommodating space can effectively prevent the overflow of the sealing element during the injection molding process, ensuring that the sealing element can be accurately filled into the accommodating space, which helps to improve the molding quality of the sealing element.

[0025] As a further improvement of the utility model, at least one end of the support part in the thickness direction of the support framework extends outward to form a boss structure.

[0026] By extending at least one end of the support part outward to form a boss structure, the rigidity of the support framework can be significantly enhanced. As a reinforcing structure, the boss structure can effectively disperse and withstand external pressure, reducing the deformation of the support framework under stress, thereby improving the overall structural strength of the sealing gasket. Moreover, the boss structure can be in close contact with the sealing element, providing additional fixation, so that the sealing element is less likely to displace or fall off during use, thereby improving the stability of the sealing element.

[0027] As a further improvement of the utility model, the support framework is a circular ring structure, and the plurality of support portions are arranged uniformly along the circumferential direction of the support framework.

[0028] By arranging the plurality of support portions uniformly along the circumferential direction of the circular ring support framework, uniform support can be ensured in all directions of the sealing gasket. Thus, the uniformly distributed support force can effectively prevent the sealing gasket from tilting or deviating when subjected to force, thereby improving the structural stability and reliability of the entire sealing gasket. The uniform arrangement of the plurality of support portions further enhances the overall strength of the support framework, enabling it to maintain good shape and dimensional stability under high pressure environment.

[0029] As a further improvement of the utility model, the sealing element has a pressing portion protruding from the side away from the valve core, and the width of the pressing portion gradually decreases in the direction away from the valve core.

[0030] The width of the pressing portion gradually decreases in the direction away from the valve core, and presents a wedge-shaped or conical structure, enabling the pressing portion to have better adaptability and sealing performance during installation and operation. The pressing portion is in abutment with the valve body, and the pressing portion elastically deforms due to pressure, thereby enabling the pressing portion to better fit its installation position, filling small gaps and unevenness, and further improving sealing performance. In the case of fluid pressure changes, such as fluid applying pressure away from the valve core to the sealing gasket, further deformation of the pressing portion can play a certain pressure compensation role, ensuring that the sealing performance is not affected.

[0031] As a further improvement of the utility model, the sealing gasket further has a lubricating film on the side facing the valve core.

[0032] The lubricating film can significantly reduce the friction coefficient between the sealing gasket and the valve core. The lubricating film is usually made of materials with low friction coefficient, such as polytetrafluoroethylene (PTFE) and the like, and can form a smooth surface between the sealing gasket and the valve core, reducing friction therebetween. By reducing friction, the lubricating film can effectively reduce wear between the sealing gasket and the valve core. During the long-term use of the valve device, this wear-reducing effect can significantly prolong the service life of the sealing gasket and the valve core

[0033] The utility model also provides a valve device, which comprises the sealing element described above. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The utility model provides a valve device structure explosion map for an embodiment thereof;

[0035] Figure 2 The utility model provides a valve device for the valve device in Figure 1 a perspective view.

[0036] Figure 3 Another perspective view of the valve device in Figure 1

[0037] Figure 4 A structural schematic view of a support framework provided by an embodiment of the present application;

[0038] Figure 5 A structural schematic view of a support framework provided by another embodiment of the present application;

[0039] Figure 6 A structural schematic view of a support framework provided by yet another embodiment of the present application;

[0040] Figure 7 A top view of the support framework in Figure 6

[0041] A structural schematic view of a support framework provided by yet another embodiment of the present application; Figure 8

[0042] A structural schematic view of a support framework provided by yet another embodiment of the present application; Figure 9

[0043] A structural schematic view of a support framework provided by yet another embodiment of the present application; Figure 10

[0044] A sectional view of a sealing gasket provided by an embodiment of the present application; Figure 11

[0045] In the figure: 10, valve device; 100, sealing gasket; 110, support framework; 111, support part; 112, accommodating space; 1121, first chamber; 1122, second chamber; 113, boss structure; 120, sealing element; 121, pressing part; 130, lubricating film; 200, valve body; 210, external flow passage opening; 220, valve body proper; 230, valve body cover; 300, valve core; 310, valve core flow passage. DETAILED DESCRIPTION

[0046] The present application will be described in detail below with reference to the embodiments shown in the drawings. However, the embodiments do not limit the present application, and the changes in mechanism, method, or function made by those of ordinary skill in the art based on the embodiments are included in the protection scope of the present application.

[0047] ​​The terms such as "upper", "lower", "left", "right", "front", "back", etc. used herein to indicate spatial relative positions are for the purpose of facilitating illustration to describe the relationship of one feature relative to another feature as shown in the drawings. It can be understood that the terms of spatial relative positions can be intended to include different orientations other than those shown in the drawings, and should not be construed as limiting the claims. In addition, the descriptive word "horizontal" used herein is not completely equivalent to along the direction perpendicular to the gravity direction, and a certain angle of inclination is allowed.

[0048] Figures 1 to 3 The valve device 10 provided by the present disclosure is shown as an example, which is a ball valve. Further, the valve device 10 can be applied in a vehicle thermal management system for adjusting the communication relationship of each flow passage.

[0049] The valve device 10 includes a valve body 200 and a valve core 300, see Figures 1-3 The valve body 200 includes a plurality of external flow passage ports 210; the valve core 300 is arranged in the valve body 200, and at least one valve core flow passage 310 is arranged in the valve core 300. The valve core 300 can be driven to rotate to switch the communication relationship between the at least one valve core flow passage 310 and the plurality of external flow passage ports 210.

[0050] The valve body 200 is the main structural component of the entire valve device 10, which serves to carry and accommodate other components. The number of external flow passage ports 210 arranged on the valve body 200 is multiple, which is used to provide the channel interface for fluid inlet and outlet. The valve device 10 can be connected and interacted with multiple external fluid passages, so as to realize more complex fluid flow control, for example, applied in a vehicle thermal management system. The plurality of external flow passage ports 210 can be respectively connected to different pipelines in the vehicle thermal management system, which is used to control the flow direction of cold and hot fluid (refrigerant) to different pipelines, so as to realize functions such as seat heating, air conditioning refrigeration, etc. In the present embodiment, the valve body 200 further includes a valve body cover 230 to facilitate the installation of other components in the valve body 200. After installation is completed, the valve body cover 230 can be fixed on the valve body body 220 by welding or through screw connection and the like.

[0051] The valve core 300 is internally designed with at least one valve core flow passage 310, i.e. the channel for fluid flowing inside the valve device 10. By driving the valve core 300 to rotate, the communication state between the valve core flow passage 310 and the plurality of external flow passage ports 210 is changed, so as to realize the switching control of fluid flow direction. That is, the rotation of the valve core 300 can change the flow direction of the refrigerant, and realize the switching of refrigeration and heating modes at each position of the vehicle.

[0052] The valve device 10 further comprises a sealing gasket 100 located at the connection position of each outer flow channel port 210 and the valve core flow channel 310, which plays a sealing role to prevent fluid leakage during flow channel switching, ensuring the normal operation of the valve device 10 and the accuracy of fluid control.

[0053] The sealing gasket 100 comprises a support skeleton 110 and a sealing element 120, wherein the support skeleton 110 is in a ring structure; and the sealing element 120 is made of flexible material and is integrally formed with the support skeleton 110.

[0054] The ring-shaped support skeleton 110 can provide a stable support frame for the sealing gasket 100, so that it maintains good shape and position stability during installation and use.

[0055] The sealing element 120 is made of flexible material, which has good elasticity and deformation ability, can adapt to the slight unevenness of the flow channel connection position during installation, tightly fit the surface of the valve core 300, and thus achieve good sealing effect. At the same time, when the valve core 300 rotates to switch the flow channel communication relationship, the flexible sealing element 120 can deform accordingly with the change of the valve core rotation, and always maintain a sealed state.

[0056] In this embodiment, the flexible material may, for example, be natural rubber, rubber fiber, polyurethane (PU), polyvinyl chloride (PVC), nitrile rubber, etc., and the flexible material is not limited here.

[0057] In this embodiment, the support skeleton 110 has a plurality of support portions 111 arranged circumferentially along the support skeleton 110; and at least part of the sealing element 120 is located between two adjacent support portions 111. By arranging at least part of the sealing element 120 between two adjacent support portions 111, the sealing element 120 can better disperse stress when stressed, so that the sealing element 120 does not concentrate on one point when subjected to fluid pressure or other external forces, thereby reducing the risk of local deformation and damage of the sealing element 120. At the same time, the presence of the support portions 111 provides additional support for the sealing element 120, enhancing the rigidity of the sealing element 120, thereby maintaining the shape and position stability of the sealing element 120 and ensuring that it does not deform or shift during long-term use, thereby improving the reliability and service life of the sealing gasket 100.

[0058] In some embodiments, referring to Figure 4 , an accommodation space 112 is formed between two adjacent support portions 111; and at least part of the accommodation spaces 112 on the support skeleton 110 is configured to penetrate the support skeleton 110, and at least one end of the accommodation space 112 in the thickness direction of the support skeleton 110 is open.

[0059] Since the support portions 111 are arranged in a circumferential direction on the support framework 110, a relatively independent accommodating space 112 is naturally formed between two adjacent support portions 111, which provides space conditions for the sealing element 120 of the accommodating portion. The support framework 110 has a certain thickness, and the accommodating space 112 penetrating through the support framework 110 has two ports in the thickness direction of the support framework 110, at least one of which is open, so that the fluid sealing element 120 can be filled in the accommodating space 112 during the injection molding process, so that the sealing element 120 and the support framework 110 can be better combined together to form a complete sealing gasket structure. After the sealing element 120 is filled into the accommodating space 112, a mechanical interlocking structure is formed with the support framework 110, so that the combination between the sealing element 120 and the support framework 110 is more firm and is not easy to relatively displace or separate during use. The injection molding process is a conventional process, which will not be described here.

[0060] In other embodiments, referring to Figure 5 , the accommodating space 112 is formed between two adjacent support portions 111; at least part of the plurality of accommodating spaces 112 on the support framework 110 includes a first chamber 1121 and a second chamber 1122 arranged at intervals in the thickness direction of the support framework; in the thickness direction of the support framework, the first chamber 1121 and the second chamber 1122 are open at one end of the surface of the support framework 110.

[0061] The first chamber 1121 and the second chamber 1122 are not closely connected, but have a certain interval distance in the thickness direction of the support framework 110. The interval arrangement makes the two chambers independent of each other in space, forming a separated structure. The first chamber 1121 and the second chamber 1122 both have openings in the thickness direction of the support framework 110, and the sealing element 120 can be filled into the first chamber 1121 and the second chamber 1122 respectively during the injection molding process. Such a separate filling mode enables the sealing element 120 to be more uniformly distributed around the support framework 110, ensuring the close combination between the sealing element 120 and the support framework 110. At the same time, it also helps to improve the filling quality of the sealing element 120, which can flow and fill better during the injection molding process, reducing molding defects.

[0062] In the present embodiment, the cross-sectional shape of the accommodation space 112 in the thickness direction of the support framework is any one of a dovetail shape, a circular shape, a rectangular shape, a trapezoidal shape, and a triangular shape. Thus, by providing a suitable cross-sectional shape, the tightness between the sealing element 120 and the support framework 110 can be improved, and the sealing performance of the gasket 100 can be improved. For example, a dovetail-shaped cross-section can prevent displacement of the sealing element 120 when subjected to a force, a circular cross-section can reduce local stress concentration of the sealing element 120, a rectangular cross-section can increase the contact area of the sealing element 120, a trapezoidal cross-section can improve the compression resistance of the sealing element 120, and a triangular cross-section can enhance the stability of the sealing element 120, etc. Further, in addition to the above shapes, other shapes can also be used, which are not limited herein.

[0063] In some embodiments of the present application, the radially outer edges of two adjacent support portions 111 are connected to each other to form a side wall of the accommodation space 112.

[0064] Referring to Figures 6-8 , the support portions 111 extend outward in the radial direction, and the radially outer edges of two adjacent support portions 111 are connected to each other, so that a continuous structure is formed between the support portions 111. This continuous structure constitutes a side wall of the accommodation space 112, which presents a relatively regular shape in the inner region of the support framework 110, providing stable support and a confined space for the sealing element 120. In particular, Figure 8 , the side wall structure formed by connecting the radially outer edges of adjacent support portions 111 causes the accommodation space 112 to present a hole shape in the interior of the support framework 110.

[0065] By connecting the radially outer edges of two adjacent support portions 111 to form a side wall of the accommodation space 112, the structure of the accommodation space 112 is more complete and stable, which can effectively prevent the accommodation space 112 from deforming or being damaged when subjected to a force. Specifically, the formation of the side wall enhances the rigidity of the support framework 110, which can better support the sealing element 120, and the rigidity helps to improve the reliability and service life of the gasket 100 under harsh working conditions such as high pressure and high temperature. At the same time, the side wall of the accommodation space 112 can effectively prevent the sealing element 120 from overflowing during injection molding, ensuring that the sealing element 120 can be accurately filled into the accommodation space 112, which helps to improve the molding quality of the sealing element 120.

[0066] In some embodiments of the present application, at least one of the two ends of the support portion 111 in the thickness direction of the support framework extends outward to form a boss structure 113.

[0067] Referring to Figures 9-10The boss structure 113 is formed by extending outward at least one end of the support portion 111 in the thickness direction of the support framework 110. Figure 9 As shown in Figure 10 , the outer edge of the support portion 111 has an outwardly protruding portion, which forms the boss structure 113. If the radial outer edges of the support portion 111 are connected to each other, the boss structure 113 can also be a continuously connected structure. In the present embodiment, the outward extension can be performed at the upper end, the lower end, or both ends of the support portion 111, which is not limited herein.

[0068] By extending outward at least one end of the support portion 111 to form the boss structure 113, the rigidity of the support framework 110 can be significantly enhanced. As a reinforcing structure, the boss structure 113 can effectively disperse and withstand external pressure, reduce the deformation of the support framework 110 under stress, and thus improve the overall structural strength of the gasket 100. Moreover, the boss structure 113 can be in close contact with the sealing element 120 to provide additional fixation, so that the sealing element 120 is less likely to displace or fall off during use, thereby improving the stability of the sealing element 120.

[0069] In the present embodiment, in order to fit the spherical valve core 300, the gasket 100 is in a circular ring shape. Correspondingly, the support framework 110 is also in a circular ring shape.

[0070] Specifically, referring to Figures 4 to 10 , the support framework 110 is in a circular ring shape, and the plurality of support portions 111 are uniformly arranged along the circumferential direction of the support framework 110.

[0071] By uniformly arranging the plurality of support portions 111 along the circumferential direction of the circular ring-shaped support framework 110, it can be ensured that the gasket 100 can be uniformly supported in all directions. Thus, the uniformly distributed support force can effectively prevent the gasket 100 from tilting or deviating under stress, thereby improving the structural stability and reliability of the entire gasket 100. The uniform arrangement of the plurality of support portions 111 further enhances the overall strength of the support framework 110, so that it can still maintain good shape and dimensional stability under high pressure.

[0072] Referring to Figure 3 and Figure 11 , the sealing element 120 protrudes to form a pressing portion 121 on the side away from the valve core 300, and the width of the pressing portion 121 gradually decreases in the direction away from the valve core 300.

[0073] The pressing portion 121 is formed by protruding from the side of the sealing element 120 away from the valve core 300, and is located Figure 11The upper edge region of the middle sealing element 120 forms a distinct convex structure. The valve body 200 is provided with a groove matching the sealing gasket 100, and during installation, the pressing portion 121 can be matched with the corresponding structure on the valve body 200. The width of the pressing portion 121 gradually decreases in the direction away from the valve core 300, and presents a wedge or tapered structure, so that the pressing portion 121 has better adaptability and sealing performance during installation and operation. The pressing portion 121 is in abutment with the valve body 200, and the pressing portion 121 is elastically deformed due to pressure (valve core 300), so that the pressing portion 121 can better fit its installation position, fill small gaps and unevenness, thereby improving the sealing performance. In the case of fluid pressure change, such as fluid applying pressure away from the valve core 300 to the sealing gasket 100, the further deformation of the pressing portion 121 can play a certain pressure compensation role, ensuring that the sealing performance is not affected.

[0074] Continuing to refer to Figure 11 , the sealing gasket 100 is also provided with a lubricating film 130 on the side facing the valve core 300.

[0075] The lubricating film 130 directly contacts the valve core 300, which can significantly reduce the friction coefficient between the sealing gasket 100 and the valve core 300. The lubricating film 130 is usually made of materials with low friction coefficient, such as polytetrafluoroethylene (PTFE) and the like, which can form a smooth surface between the sealing gasket 100 and the valve core 300, reducing the friction therebetween. By reducing friction, the lubricating film 130 can effectively reduce the wear between the sealing gasket 100 and the valve core 300. During the long-term use of the valve device 10, this wear-reducing effect can significantly prolong the service life of the sealing gasket 100 and the valve core 300.

[0076] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and 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 those skilled in the art can understand.

[0077] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A sealing gasket applied to a valve device, the valve device comprising: a valve body having a plurality of external flow passage ports; a valve core disposed in the valve body, the valve core having at least one valve core flow passage, the valve core being drivable to rotate to switch a communication relationship between the at least one valve core flow passage and the plurality of external flow passage ports; the sealing gasket being located at a connection position between each of the external flow passage ports and the valve core flow passage, the sealing gasket comprising: a support skeleton in a ring structure; a sealing element in a flexible material and integrally formed with the support skeleton; characterized in that the support skeleton has a plurality of support portions arranged in a circumferential direction of the support skeleton, and at least part of the sealing element is located between two adjacent support portions.

2. The gasket of claim 1 wherein, An accommodation space is formed between the two adjacent support portions. At least part of the plurality of accommodation spaces on the support skeleton is configured to penetrate the support skeleton and at least one end of the accommodation space in a thickness direction of the support skeleton is open.

3. The gasket of claim 1 wherein, An accommodation space is formed between the two adjacent support portions. At least part of the plurality of accommodation spaces on the support skeleton comprises a first chamber and a second chamber arranged in a spaced manner in the thickness direction of the support skeleton, and the first chamber and the second chamber are open at one end of the surface of the support skeleton in the thickness direction of the support skeleton.

4. The gasket of claim 2 or 3, wherein, The cross-sectional shape of the accommodation space in the thickness direction of the support skeleton is any one of a dovetail shape, a circular shape, a rectangular shape, a trapezoidal shape, and a triangular shape.

5. The gasket of claim 2 or 3, wherein The radial outer edges of the two adjacent support portions are connected to each other to form a side wall of the accommodation space.

6. The gasket of claim 2 or 3, wherein At least one end of the support portion in the thickness direction of the support skeleton extends outward to form a boss structure.

7. The gasket of claim 1 wherein, The support skeleton is in a circular ring structure, and the plurality of support portions are arranged in a uniform manner in the circumferential direction of the support skeleton.

8. The gasket of claim 1 wherein, A pressing portion is protruded from a side of the sealing element away from the valve core, and the width of the pressing portion gradually decreases in a direction away from the valve core.

9. The gasket of claim 1 wherein, A lubricating film is further arranged on a side of the sealing gasket facing the valve core.

10. A valve device characterized by comprising: The sealing gasket comprises the sealing element according to any one of claims 1 to 9.

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