Sealing ring

Abstract

The utility model relates to the technical field of sealing rings, and discloses a sealing ring which comprises a sealing ring body, the sealing ring body is made of PVDF (Polyvinylidene Fluoride) materials or PFA (Polyfluoroalkoxy) materials, three layers of sealing surfaces are coaxially arranged at the upper end of the sealing ring body, and the three layers of sealing surfaces are respectively an outer ring sealing surface, a middle ring sealing surface and an inner ring sealing surface from outside to inside. The outer ring sealing face, the middle ring sealing face and the inner ring sealing face are each provided with an arc-shaped face consistent with the radian of the outer surface of the valve body, the outer ring sealing face, the middle ring sealing face and the inner ring sealing face abut against the surface of the valve body at the same time to form a sealing structure, and a first transition groove is formed between the outer ring sealing face and the middle ring sealing face. A second transition groove is formed between the middle ring sealing face and the inner ring sealing face, and the first transition groove and the second transition groove are not in contact with the valve body. The sealing ring provided by the utility model solves the problems that the contact surface between the existing sealing ring and the valve body is limited, and the sealing effect is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a sealing ring. Background Art

[0002] The electronic water pump is a key component in the automotive cooling system. It is mainly used in the main cooling system of the internal combustion engine, the turbocharger cooling circuit and the intake intercooling system. It is also used in the drive system of new energy vehicles and the thermal management system of power batteries. The electronic water pump can make the temperature of the cooling system be closed-loop controlled according to the real-time working conditions, while ensuring the reliability of the cooled components and reducing energy consumption. The electronic water pump includes a ball valve part. A sealing ring is provided between the ball valve and the connecting pipeline. The contact surface between the existing sealing ring and the valve body is limited, and there is a problem of poor sealing effect. Utility Model Content

[0003] The purpose of the utility model is to provide a sealing ring to solve at least one of the above problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A sealing ring comprises a sealing ring body, wherein the sealing ring body is made of PVDF material or PFA material, and three sealing surfaces are coaxially arranged on the upper end of the sealing ring body, and the three sealing surfaces are respectively an outer ring sealing surface, a middle ring sealing surface and an inner ring sealing surface from the outside to the inside, and the outer ring sealing surface, the middle ring sealing surface and the inner ring sealing surface all have an arc surface consistent with the curvature of the outer surface of the valve body, and the outer ring sealing surface, the middle ring sealing surface and the inner ring sealing surface are simultaneously abutted against the surface of the valve body to form a sealing structure, a first transition groove is arranged between the outer ring sealing surface and the middle ring sealing surface, and a second transition groove is arranged between the middle ring sealing surface and the inner ring sealing surface, and the first transition groove and the second transition groove are not in contact with the valve body.

[0006] In the present technical solution, a sealing ring body made of PVDF material and PFA material has the characteristics of being hydrophobic, non-absorbent, corrosion-resistant, oil-resistant, and resistant to high and low temperatures, and can further improve the service life and sealing effect; since three sealing surfaces are coaxially arranged on the upper end of the sealing ring body, the three sealing surfaces are respectively an outer ring sealing surface, a middle ring sealing surface, and an inner ring sealing surface from the outside to the inside, and the outer ring sealing surface, the middle ring sealing surface, and the inner ring sealing surface all have an arc-shaped surface consistent with the curvature of the outer surface of the valve body, and the outer ring sealing surface, the middle ring sealing surface, and the inner ring sealing surface simultaneously abut against the surface of the valve body to form a sealing structure, and the first transition groove and the second transition groove do not contact the valve body, and the first transition groove and the second transition groove realize the separation of the three sealing surfaces, that is, a three-layer sealing structure is formed between the end face of the sealing ring and the valve body, thereby increasing the contact area between the sealing ring and the valve body and improving the sealing effect from a structural point of view.

[0007] Furthermore, in order to better adapt to the size of the existing valve body, the radius R of the arcuate surfaces of the outer ring sealing surface, the middle ring sealing surface and the inner ring sealing surface are all 33 mm-37 mm.

[0008] Furthermore, in order to achieve a better sealing effect, the thickness of the sealing ring body is 14.4 mm, the inner diameter of the sealing ring body is 18.8 mm, and the outer diameter is 41.2 mm.

[0009] Furthermore, in order to achieve a better sealing effect, a groove is provided on the outer periphery of the sealing ring body, and a sealing ring is sleeved in the groove.

[0010] The beneficial effects of the utility model are as follows: in the technical scheme, the sealing ring body made of PVDF material and PFA material has the characteristics of being hydrophobic, non-absorbent, corrosion-resistant, oil-resistant and resistant to high and low temperatures, and can further improve the service life and sealing effect; since the upper end of the sealing ring body is coaxially provided with three layers of sealing surfaces, the three layers of sealing surfaces are respectively an outer ring sealing surface, a middle ring sealing surface and an inner ring sealing surface from the outside to the inside, the outer ring sealing surface, the middle ring sealing surface and the inner ring sealing surface all have an arc-shaped surface consistent with the curvature of the outer surface of the valve body, the outer ring sealing surface, the middle ring sealing surface and the inner ring sealing surface simultaneously abut against the surface of the valve body to form a sealing structure, the first transition groove and the second transition groove do not contact the valve body, the first transition groove and the second transition groove realize the separation of the three sealing surfaces, that is, a three-layer sealing structure is formed between the end face of the sealing ring and the valve body, the contact area between the sealing ring and the valve body is increased, and the sealing effect is improved structurally. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0012] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0013] In the figure: sealing ring body 1; outer ring sealing surface 2; middle ring sealing surface 3; inner ring sealing surface 4; first transition groove 5; second transition groove 6; groove 5; groove 7. DETAILED DESCRIPTION

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0015] Embodiment 1:

[0016] like Figure 1-Figure 2 As shown, this embodiment provides a sealing ring, including a sealing ring body 1, the sealing ring body 1 is made of PVDF material or PFA material, and the upper end of the sealing ring body 1 is coaxially provided with three sealing surfaces, the three sealing surfaces are respectively an outer ring sealing surface 2, a middle ring sealing surface 3 and an inner ring sealing surface 4 from the outside to the inside, the outer ring sealing surface 2, the middle ring sealing surface 3 and the inner ring sealing surface 4 all have an arc surface consistent with the curvature of the outer surface of the valve body, the outer ring sealing surface 2, the middle ring sealing surface 3 and the inner ring sealing surface 4 are simultaneously abutted against the surface of the valve body to form a sealing structure, a first transition groove 5 is provided between the outer ring sealing surface 2 and the middle ring sealing surface 3, a second transition groove 6 is provided between the middle ring sealing surface 3 and the inner ring sealing surface 4, and the first transition groove 5 and the second transition groove 6 are not in contact with the valve body.

[0017] In the present technical solution, the sealing ring body 1 made of PVDF material and PFA material has the characteristics of hydrophobicity, non-water absorption, corrosion resistance, oil resistance and high and low temperature resistance, and can further improve the service life and sealing effect; since the upper end of the sealing ring body 1 is coaxially provided with three sealing surfaces, the three sealing surfaces are respectively an outer ring sealing surface 2, a middle ring sealing surface 3 and an inner ring sealing surface 4 from the outside to the inside, the outer ring sealing surface 2, the middle ring sealing surface 3 and the inner ring sealing surface 4 all have an arc surface consistent with the curvature of the outer surface of the valve body, the outer ring sealing surface 2, the middle ring sealing surface 3 and the inner ring sealing surface 4 are simultaneously in contact with the surface of the valve body to form a sealing structure, the first transition groove 5 and the second transition groove 6 do not contact the valve body, the first transition groove 5 and the second transition groove 6 realize the separation of the three sealing surfaces, that is, a three-layer sealing structure is formed between the end face of the sealing ring and the valve body, the contact area between the sealing ring and the valve body is increased, and the sealing effect is improved from the structural point of view.

[0018] Embodiment 2:

[0019] This embodiment is optimized based on the above-mentioned embodiment 1.

[0020] In order to better adapt to the size of the existing valve body, the radius R of the arc surface of the outer ring sealing surface 2, the middle ring sealing surface 3 and the inner ring sealing surface 4 is 33mm-37mm, and preferably, the radius R of the arc surface is 34.8mm. In order to achieve a better sealing effect, the thickness H of the sealing ring body 1 is 14.4mm, the inner diameter A of the sealing ring body 1 is 18.8mm, and the outer diameter B is 41.2mm. The outer periphery of the sealing ring body 1 is provided with a groove 7, and a sealing ring (not shown in the figure) is sleeved in the groove 7.

[0021] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealing ring, characterized in that: It includes a sealing ring body, which is made of PVDF material or PFA material. Three sealing surfaces are coaxially arranged on the upper end of the sealing ring body. The three sealing surfaces are respectively an outer ring sealing surface, a middle ring sealing surface and an inner ring sealing surface from the outside to the inside. The outer ring sealing surface, the middle ring sealing surface and the inner ring sealing surface all have an arc-shaped surface consistent with the curvature of the outer surface of the valve body. The outer ring sealing surface, the middle ring sealing surface and the inner ring sealing surface are simultaneously abutted against the surface of the valve body to form a sealing structure. A first transition groove is arranged between the outer ring sealing surface and the middle ring sealing surface, and a second transition groove is arranged between the middle ring sealing surface and the inner ring sealing surface. The first transition groove and the second transition groove do not contact the valve body.

2. A sealing ring according to claim 1, characterized in that: The radius R of the arcuate surfaces of the outer ring sealing surface, the middle ring sealing surface and the inner ring sealing surface are all 33mm-37mm.

3. A sealing ring according to claim 1, characterized in that: The thickness of the sealing ring body is 14.4 mm, the inner diameter of the sealing ring body is 18.8 mm, and the outer diameter is 41.2 mm.

4. A sealing ring according to claim 1, characterized in that: A groove is arranged on the outer periphery of the sealing ring body, and a sealing ring is sleeved in the groove.

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