A sealing gasket and control valve

Abstract

This invention provides a sealing gasket composed of multiple sealing ribs connected together. The sealing ribs have an X-shaped cross-section and include outwardly extending first, second, third, and fourth sealing branches. The first and fourth sealing branches are arranged opposite each other, with the first sealing branch above the second sealing branch and the fourth sealing branch above the third sealing branch. The tops of the first and fourth sealing branches each have protrusions extending along their respective sealing branches, and the bottoms of the second and third sealing branches each have protrusions extending along their respective sealing branches. The sealing ring of this invention adopts an X-shaped design, with protrusions at the top and bottom of each sealing branch that fit snugly against the valve body and valve core. Axial self-sealing of the control valve is achieved through liquid pressure, reducing internal leakage while requiring less external force to ensure a tight fit between the sealing gasket and the valve core end face.

Description

Technical Field

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

[0002] In existing technologies, thermal management systems for new energy vehicles are developing towards integration, and multiple subsystems of these systems typically utilize multiple fluid control valves. To address the issue of internal leakage, the valve core of a traditional water valve needs to be tightly fitted to the internal sealing gasket, resulting in a higher torque required for valve core rotation. This places higher demands on the actuator's output torque, ultimately requiring higher performance from the motor and a higher reduction ratio in the traditional system. Therefore, while resolving the internal leakage problem, it is necessary to reduce the torque required for valve core rotation to lower the performance requirements of the actuator's motor and transmission system.

[0003] Therefore, it is necessary to provide a sealing gasket and a control valve to overcome the defects mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a sealing gasket and a control valve.

[0005] According to one aspect of the present invention, a sealing gasket is provided, which is composed of multiple sealing ribs connected together, wherein the sealing ribs are interconnected and integrally formed to constitute the spatial structure of the sealing gasket.

[0006] The sealing rib has an X-shaped cross-section and includes a first sealing support, a second sealing support, a third sealing support, and a fourth sealing support. The first sealing support is located above the second sealing support and forms a groove between them. The third sealing support is arranged opposite to the second sealing support and forms a groove between them. The fourth sealing support is located above the third sealing support and forms a groove between them. The first sealing support and the fourth sealing support are arranged opposite to each other and form a groove between them.

[0007] The top of the first sealing branch is provided with a first protrusion extending along the first sealing branch, the bottom of the second sealing branch is provided with a second protrusion extending along the second sealing branch, the bottom of the third sealing branch is provided with a third protrusion extending along the third sealing branch, and the top of the fourth sealing branch is provided with a fourth protrusion extending along the fourth sealing branch.

[0008] Preferably, the outer side of the first sealing branch is provided with a first external protrusion extending along the first sealing branch, the outer side of the second sealing branch is provided with a second external protrusion, the outer side of the third sealing branch is provided with a third external protrusion, and the outer side of the fourth sealing branch is provided with a fourth external protrusion.

[0009] Preferably, it further includes a diffusion section, an inner sealing section, and an outer sealing section. The diffusion section and the inner sealing section are both composed of sealing ribs. The diffusion section extends radially, the inner sealing section is arranged circumferentially on the radially inner side of the diffusion section, and the outer sealing section is arranged circumferentially on the radially outer side of the diffusion section. The outer sealing section and the inner sealing section are coaxially arranged.

[0010] Preferably, the outer sealing section includes a first outer sealing support and a second outer sealing support arranged opposite each other, the first outer sealing support being located above the second outer sealing support, and both the first and second outer sealing supports being located on the side of the outer sealing section closer to the inner sealing section.

[0011] Preferably, the side of the outer sealing section away from the inner sealing section is provided with a smooth surface.

[0012] Preferably, the diffusion section is provided with a vertical through hole, which is located between the grooves on the left and right sides and connects the grooves on the upper and lower sides.

[0013] Preferably, the groove has an arc-shaped cross-section.

[0014] According to another aspect of the present invention, a control valve is provided, including a valve housing, a valve core, a valve cover, and the aforementioned sealing gasket. The valve housing is provided with an installation groove, the sealing gasket is disposed in the installation groove, the valve core is disposed in the valve housing, and the valve cover is disposed above the valve housing for sealing the valve core inside the valve housing.

[0015] Preferably, the valve core is located above the sealing gasket and is used to press the sealing gasket into the mounting groove. At this time, the second protrusion and the third protrusion are pressed tightly against the bottom surface of the mounting groove, and the first protrusion and the fourth protrusion are pressed tightly against the bottom surface of the valve core.

[0016] Preferably, the mounting groove is provided with a plurality of vertically upward extending limiting members, and the sealing gasket is provided with a plurality of vertically penetrating through holes. The limiting members are inserted into the through holes to limit the sealing gasket.

[0017] Compared with the prior art, the sealing gasket and control valve provided by this utility model have the following advantages:

[0018] Due to the adoption of the above technical solution, this utility model has the advantages of simple structure, ingenious design and low cost. The sealing ring adopts an X-shaped mechanism design, and the top and bottom of each sealing support are provided with protrusions to fit tightly against the valve body and valve core. The sealing ring achieves the axial self-sealing effect of the control valve through liquid pressure. While effectively reducing internal leakage, the external force required to make the sealing gasket fit tightly against the valve core end face is also smaller. Therefore, the friction force that the valve core needs to overcome to rotate is smaller, and the torque required for rotation is smaller, which greatly reduces the requirements for the output torque of the actuator, that is, reduces the performance requirements of the motor and transmission system inside the actuator. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 This is a perspective view of the sealing gasket of this utility model;

[0021] Figure 2 This is a top view of the sealing gasket of this utility model;

[0022] Figure 3 for Figure 2 A cross-sectional view of surface AA;

[0023] Figure 4 for Figure 2 A cross-sectional view of the BB side;

[0024] Figure 5 This is an exploded view of the control valve of this utility model;

[0025] Figure 6 This is a bottom view of the control valve of this utility model;

[0026] Figure 7 for Figure 6 A cross-sectional view of the C-plane;

[0027] Figure 8 This is a top view of the valve housing of this utility model.

[0028] Among them, 100 is the sealing gasket; 1 is the inner sealing section; 10 is the sealing rib; 11 is the first inner sealing support; 12 is the second inner sealing support; 13 is the third inner sealing support; 14 is the fourth inner sealing support; 2 is the outer sealing section; 21 is the first outer sealing support; 22 is the second outer sealing support; 3 is the diffuser section; 31 is the first sealing support; 311 is the first protrusion; 312 is the first outer protrusion; 32 is the second sealing support; 321 is the second protrusion; 322 is the second outer protrusion; 33 is the third sealing support; 331 is the third protrusion; 332 is the third outer protrusion; 34 is the fourth sealing support; 341 is the fourth protrusion; 342 is the fourth outer protrusion; 4 is the groove; 5 is the through hole; 6 is the valve body; 61 is the mounting groove; 62 is the limiting element; 7 is the valve core; 8 is the valve cover; and 9 is the actuator. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0030] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0031] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0035] See Figure 1 and Figure 2 This embodiment discloses a sealing gasket 100, which is integrally formed by multiple sealing ribs 10 connected together. The sealing ribs 10 are designed to conform to the spatial structure of the area to be sealed and installed in the required position. In this embodiment, the sealing gasket 100 spatially comprises an inner sealing section 1, an outer sealing section 2, and multiple diffusion sections 3, all formed by the sealing ribs 10. The inner sealing section 1 and the outer sealing section 2 are both annular, and the diffusion sections 3 are located between the inner sealing section 1 and the outer sealing section 2, extending radially. Specifically, the diffusion sections 3 extend radially from the inner sealing section 1 to the outer sealing gasket 100.

[0036] See Figure 3 The sealing rib 10 has an X-shaped cross-section and includes a first sealing support 31, a second sealing support 32, a third sealing support 33, and a fourth sealing support 34. The first sealing support 31 is located above the second sealing support 32. The third sealing support 33 is arranged opposite to the second sealing support 32 from left to right. The fourth sealing support 34 is located above the third sealing support 33 and is arranged opposite to the first sealing support 31 from left to right. A groove 4 is formed between the first sealing support 31 and the second sealing support 32, between the third sealing support 33 and the second sealing support 32, between the fourth sealing support 34 and the third sealing support 33, and between the first sealing support 31 and the fourth sealing support 34.

[0037] The groove 4 has an arc-shaped cross-section. The top of the first sealing support 31 is provided with a first protrusion 311 extending along the first sealing support 31, the bottom of the second sealing support 32 is provided with a second protrusion 321, the bottom of the third sealing support 33 is provided with a third protrusion 331, and the top of the fourth sealing support 34 is provided with a fourth protrusion 341.

[0038] The diffuser section 3 is composed of sealing ribs 10, and the structural shape of the diffuser section 3 is the same as that of the sealing ribs 10. That is, the cross-section of the diffuser section 3 is X-shaped, and the X shape is composed of a first sealing support 31, a second sealing support 32, a third sealing support 33, and a fourth sealing support 34. The first sealing support 31, the second sealing support 32, the third sealing support 33, and the fourth sealing support 34 all extend along the extension direction of the inner sealing section 1.

[0039] The diffuser section 3 has a vertically penetrating through hole 5, which is located between the grooves 4 on the left and right sides and connects the grooves 4 on the upper and lower sides. The outer side of the first sealing support 31 has a first external protrusion 312 extending along the first sealing support 31. The outer side of the second sealing support 32 has a second external protrusion 322 extending along the second sealing support 32. The outer side of the third sealing support 33 has a third external protrusion 332 extending along the third sealing support 33. The outer side of the fourth sealing support 34 has a fourth external protrusion 342 extending along the fourth sealing support 34.

[0040] See Figure 4 The inner sealing section 1 is composed of sealing ribs 10. The structure of the inner sealing section 1 is the same as that of the sealing ribs 10, and its cross-section is also X-shaped. Similarly, the X shape is composed of a first inner sealing support 11, a second inner sealing support 12, a third inner sealing support 13, and a fourth inner sealing support 14. The first inner sealing support 11 and the second inner sealing support 12 are arranged vertically opposite each other and located radially inside the inner sealing section 1, while the fourth inner sealing support 14 and the third inner sealing support 13 are arranged vertically opposite each other and located radially outside the inner sealing section 1.

[0041] The first inner sealing support 11 and the second inner sealing support 12 are arranged in a closed ring along the inner sealing section 1. One end of the third inner sealing support 13 is connected to the third sealing support 33 of a diffusion section 3, and the other end is connected to the second sealing support 32 of the diffusion section 3 adjacent to the third inner sealing support 13. One end of the fourth inner sealing support 14 is connected to the fourth sealing support 34 of a diffusion section 3, and the other end is connected to the first sealing support 31 of the diffusion section 3 adjacent to the fourth inner sealing support 14. The inner sealing section 1 is provided with a vertically penetrating through hole 5, which is located between the grooves 4 on the left and right sides and connects the grooves 4 on the upper and lower sides.

[0042] The outer sealing section 2 includes a first outer sealing support 21 and a second outer sealing support 22 arranged vertically opposite each other, with the first outer sealing support 21 located above the second outer sealing support 22. Both the first outer sealing support 21 and the second outer sealing support 22 are located radially inward of the outer sealing section 2. One end of the first outer sealing support 21 is connected to the fourth sealing support 34 of a diffuser section 3, and the other end is connected to the first sealing support 31 of the diffuser section 3 adjacent to it. One end of the second inner sealing support 12 is connected to the third sealing support 33 of a diffuser section 3, and the other end is connected to the second sealing support 32 of the diffuser section 3 adjacent to it. The side of the outer sealing section 2 away from the inner sealing section 1 is a smooth surface. The smooth surface is arranged in a closed circumference along the outer sealing section 2.

[0043] See Figure 5 This embodiment also discloses a control valve, including a valve housing 6, a valve core 7, a valve cover 8, and the aforementioned sealing gasket 100. The valve housing 6 has a mounting groove 61, and the sealing gasket 100 is disposed within the mounting groove 61. The valve cover 8 is fixedly fitted onto the top of the valve housing 6, and the valve core 7 is disposed within the cavity formed by the valve cover 8 and the valve housing 6, and can rotate axially within it. An actuator 9 is provided on the valve cover 8 to control the rotation of the valve core 7.

[0044] See Figure 6 and Figure 7 The valve core 7 is placed inside the valve housing 6 and above the sealing gasket 100, pressing the sealing gasket 100 tightly into the mounting groove 61. At this time, the second protrusion 321 and the third protrusion 331 are pressed tightly against the bottom surface of the mounting groove 61, and the first protrusion 311 and the fourth protrusion 341 are pressed tightly against the bottom surface of the valve core 7.

[0045] See Figure 8 The mounting groove 61 is provided with a plurality of vertically upward extending limiting members 62. The limiting members 62 are provided one-to-one with the through holes 5 and are inserted in the corresponding through holes 5, which play a limiting role for the sealing gasket 100 and prevent the sealing gasket 100 from rotating, twisting and tilting.

[0046] See Figure 7 The sealing gasket 100 is made of vulcanized PTFE rubber. The rubber side is installed in the sealing groove and contacts the valve body 6, while the PTFE side contacts the bottom surface of the valve core 7. During use, the inside of the water valve fills with liquid. The liquid enters the groove 4 between the first sealing support 31 and the second sealing support 32, and the groove 4 between the third sealing support 33 and the fourth sealing support 34. This causes the first protrusion 311 and the fourth protrusion 341 to press upwards against the bottom surface of the valve core 7, and the second protrusion 321 and the third protrusion 331 to press downwards against the bottom surface of the mounting groove 61. The self-sealing effect of the control valve's axial direction is achieved through liquid pressure. At this time, the effective pressure of the sealing surface at the contact point is equal to the sum of the pre-pressure generated by the elastic deformation of the sealing gasket 100 and the liquid pressure.

[0047] The liquid will generate hydraulic pressure on the surface of the sealing gasket 100. The area of ​​the groove 4 between the first sealing support 31 and the second sealing support 32, and the area of ​​the groove 4 between the third sealing support 33 and the fourth sealing support 34, is larger than the area between the protrusions and the outer protrusions. Due to the difference in relative surface area, the first protrusion 311 and the fourth protrusion 341 of the sealing gasket 100 will be in close contact with the valve core 7, and the second protrusion 321 and the third protrusion 331 will be in close contact with the valve body 6, thereby forming an axial self-sealing effect.

[0048] The sealing method of the inner sealing section 1 and the outer sealing section 2 is the same as that of the diffuser section 3. The outer smooth surface of the outer sealing section 2 is in close contact with the inner wall of the valve body 6. During use, the inside of the water valve is filled with liquid. The liquid enters the groove 4 between the first outer sealing support 21 and the second outer sealing support 22, so that the first outer protrusion 312 at the top of the first outer sealing support 21 is pressed against the ground of the valve core 7, and the second outer protrusion 322 at the bottom of the second outer sealing support 22 is pressed against the bottom surface of the mounting groove 61. At the same time, radial outward pressure is applied in the groove 4, so that the smooth surface is further pressed against the inner wall of the valve body 6.

[0049] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A sealing gasket, comprising multiple sealing ribs connected together, wherein the sealing ribs are interconnected and integrally formed to constitute the spatial structure of the sealing gasket, characterized in that: The sealing rib has an X-shaped cross-section and includes a first sealing support, a second sealing support, a third sealing support, and a fourth sealing support. The first sealing support is located above the second sealing support and forms a groove between them. The third sealing support is arranged opposite to the second sealing support and forms a groove between them. The fourth sealing support is located above the third sealing support and forms a groove between them. The first sealing support and the fourth sealing support are arranged opposite to each other and form a groove between them. The top of the first sealing branch is provided with a first protrusion extending along the first sealing branch, the bottom of the second sealing branch is provided with a second protrusion extending along the second sealing branch, the bottom of the third sealing branch is provided with a third protrusion extending along the third sealing branch, and the top of the fourth sealing branch is provided with a fourth protrusion extending along the fourth sealing branch.

2. The gasket of claim 1 wherein, The outer side of the first sealing branch is provided with a first external protrusion extending along the first sealing branch, the outer side of the second sealing branch is provided with a second external protrusion, the outer side of the third sealing branch is provided with a third external protrusion, and the outer side of the fourth sealing branch is provided with a fourth external protrusion.

3. The gasket of claim 2 wherein, It also includes a diffuser section, an inner sealing section, and an outer sealing section. The diffuser section and the inner sealing section are both composed of sealing ribs. The diffuser section extends radially, the inner sealing section is arranged circumferentially on the radially inner side of the diffuser section, and the outer sealing section is arranged circumferentially on the radially outer side of the diffuser section. The outer sealing section and the inner sealing section are coaxially arranged.

4. The gasket of claim 3 wherein, The outer sealing section includes a first outer sealing support and a second outer sealing support arranged opposite each other. The first outer sealing support is located above the second outer sealing support, and both the first and second outer sealing supports are located on the side of the outer sealing section closer to the inner sealing section.

5. The gasket of claim 4 wherein, The outer sealing section has a smooth surface on the side away from the inner sealing section.

6. The gasket of claim 5 wherein, The diffusion section is provided with a vertical through hole, which is located between the grooves on the left and right sides and connects the grooves on the upper and lower sides.

7. The gasket of claim 6 wherein, The groove has an arc-shaped cross-section.

8. A control valve characterized by The valve includes a valve housing, a valve core, a valve cover, and a sealing gasket as described in any one of claims 1 to 7. The valve housing has an installation groove, the sealing gasket is disposed in the installation groove, the valve core is disposed inside the valve housing, and the valve cover is disposed above the valve housing for sealing the valve core inside the valve housing.

9. The control valve of claim 8, wherein The valve core is located above the sealing gasket and is used to press the sealing gasket tightly into the mounting groove. At this time, the second and third protrusions are pressed tightly against the bottom surface of the mounting groove, and the first and fourth protrusions are pressed tightly against the bottom surface of the valve core.

10. The control valve of claim 9, wherein The mounting groove is provided with multiple vertically upward extending limiting members, and the sealing gasket is provided with multiple vertically penetrating through holes. The limiting members are inserted into the through holes to limit the sealing gasket.

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