A v-shaped leakproof dynamic seal assembly

Abstract

The utility model relates to sealing technical field discloses a kind of V-shaped leakproof dynamic cooperation sealing assembly, comprising: ring, several sealing rings, support ring and dynamic sealing member;The ring bottom is provided with two sides downward inclined V-shaped pressure surface;The sealing ring top and bottom are respectively provided with downward inclined V-shaped sealing concave surface and sealing bottom, and lip is formed between the sealing concave surface and sealing bottom;In the utility model, spherical groove is respectively provided on ring, sealing ring and support ring, and spherical protrusion is arranged on sealing ring, the relative position between each component is limited by the cooperation of spherical protrusion and spherical groove, effectively avoid the relative displacement between ring, sealing ring and support ring due to external force, thereby reducing the sliding friction and abrasion of the contact surface of three, avoid the flatness of contact surface to be destroyed, prolong the service life of component, solve the problem of abrasion and sealing failure in prior art due to relative displacement.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, and in particular to a V-shaped anti-leakage dynamic fit sealing assembly. Background Technology

[0002] Circuit breakers, high-voltage switches, and other similar devices require a sealed internal space to prevent the intrusion of external moisture and dust, as well as to prevent leakage of internal media. Therefore, they are typically equipped with V-shaped leak-proof dynamic-fit sealing components to achieve both dynamic fit and leak prevention. Sealing devices with a V-shaped structure at their core are usually made of elastic or metallic materials, forming a dynamic seal through their specific geometry and mating surfaces. They generally include a support ring, a sealing ring, and a pressure ring. The dynamic fit typically corresponds to a clearance fit in standard terminology, meaning that the dimensions of the support ring, sealing ring, and pressure ring are larger than the shaft dimensions, allowing for relative movement after assembly.

[0003] In existing technology, the inner diameters of the support ring, sealing ring, and pressure ring are smaller than the diameter of the shaft, resulting in a certain displacement space for these components. Under external forces, this displacement can lead to relative displacement. This relative displacement causes sliding friction on the contact surfaces of the three components, resulting in wear of these surfaces, damaging the flatness of the cavity sidewalls, reducing their service life, and allowing media to leak from the gaps, ultimately leading to seal failure.

[0004] Therefore, this application provides a V-shaped leak-proof dynamic fit sealing assembly to meet the requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a V-shaped anti-leakage dynamic fit sealing assembly to solve the problem that the support ring, sealing ring and pressure ring will be relatively displaced under the existing dynamic fit, which will reduce the service life of the three components and cause media leakage.

[0006] To solve the problems mentioned above, this utility model is implemented through the following technical solution.

[0007] A V-shaped leak-proof, dynamic-fit sealing assembly includes:

[0008] Pressure ring, several sealing rings, support ring, and dynamic seal;

[0009] The bottom of the pressure ring has pressure surfaces that slope downwards in a V-shape on both sides;

[0010] The top and bottom of the sealing ring are respectively provided with a downwardly inclined V-shaped sealing concave surface and a sealing bottom, and a lip is formed between the sealing concave surface and the sealing bottom;

[0011] The top of the support ring has two downward-sloping V-shaped support concave surfaces.

[0012] The pressure ring, the sealing ring, and the support ring are all provided with spherical grooves;

[0013] The sealing ring is provided with spherical protrusions.

[0014] Preferably, the pressure ring, the plurality of sealing rings, and the support ring are all installed in the cavity opened in the dynamic seal, together forming a sealing assembly.

[0015] Preferably, the spherical grooves are respectively formed on both sides of the pressure surface and both sides of the sealing bottom, for accommodating the spherical protrusions.

[0016] Preferably, the spherical protrusion is fixed on both sides of the sealing concave surface and both sides of the supporting concave surface, and is used to enter the spherical groove to define the relative positions between the pressure ring and the sealing ring, and between the sealing ring and the supporting ring.

[0017] Preferably, the sealing ring has a vertically downward sealing groove in the middle of the sealing concave surface, providing space for the downward movement of the sealing ring installed above or the bottom of the pressure ring.

[0018] Preferably, the support ring has a vertically downward support groove in the middle of the support concave surface, providing space for the sealing bottom installed at the bottom of the sealing ring above to move downward.

[0019] Preferably, the spherical protrusion has a top cavity at its top, a side cavity on one side of the top of the spherical protrusion, and the remaining solid portion inside the spherical protrusion is a solid end.

[0020] Preferably, the cross-sectional area of ​​the spherical protrusion is greater than half the diameter of a circle and less than four-fifths the diameter of a circle.

[0021] Preferably, when the pressure ring, the plurality of sealing rings, and the support ring are installed, the support ring is installed at the bottom, the pressure ring is installed at the top, and the plurality of sealing rings are installed between the pressure ring and the support ring.

[0022] This invention provides a V-shaped leak-proof, dynamic-fit sealing assembly. Compared with the prior art, it has the following advantages:

[0023] By creating spherical grooves on the pressure ring, sealing ring, and support ring, and setting spherical protrusions on the sealing ring, the relative positions of the components are limited by the cooperation between the spherical protrusions and the spherical grooves. This effectively avoids the relative displacement between the pressure ring, sealing ring, and support ring caused by external forces, thereby reducing the sliding friction and wear on the contact surfaces of the three components, preventing damage to the flatness of the contact surfaces, extending the service life of the components, and solving the problem of wear and sealing failure caused by relative displacement in the prior art. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0026] Figure 3 This is a schematic diagram of the overall structure of the pressure ring, sealing ring, and support ring of this utility model.

[0027] Figure 4 This is a schematic diagram of the overall structure of the pressure ring of this utility model.

[0028] Figure 5 This is a schematic diagram of the overall structure of the sealing ring of this utility model.

[0029] Figure 6 This is a schematic cross-sectional view of the integral pressure ring, sealing ring, and support ring of this utility model.

[0030] Figure 7 This utility model Figure 6 Enlarged structural diagram at point A in the middle.

[0031] Figure 8 This is a schematic cross-sectional view of the connection between the pressure ring and the sealing ring of this utility model.

[0032] Figure 9 This is a schematic cross-sectional view of the connection between the sealing ring and the support ring of this utility model.

[0033] Figure 10 This is a schematic diagram of the overall structure of the spherical protrusion of this utility model.

[0034] Figure 11 This is a schematic diagram of the cross-sectional structure of the spherical protrusion of this utility model.

[0035] The attached figures are labeled as follows:

[0036] 10. Pressure ring; 11. Pressure surface; 20. Sealing ring; 21. Sealing concave surface; 22. Sealing bottom; 23. Sealing groove; 24. Lip; 30. Support ring; 31. Support concave surface; 32. Support groove; 40. Spherical groove; 50. Spherical protrusion; 51. Top cavity; 52. Side cavity; 53. Solid end; 60. Dynamic seal. Detailed Implementation

[0037] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0038] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0039] Reference Figures 1-9 A V-shaped leak-proof dynamic fit sealing assembly, comprising:

[0040] Pressure ring 10, several sealing rings 20, support ring 30 and dynamic seal 60;

[0041] The bottom of the pressure ring 10 has a pressure surface 11 that slopes downward in a V-shape on both sides;

[0042] The top and bottom of the sealing ring 20 are respectively provided with a downwardly inclined V-shaped sealing concave surface 21 and a sealing bottom 22;

[0043] The top of the support ring 30 has a support concave surface 31 that slopes downward in a V-shape on both sides;

[0044] The pressure ring 10, sealing ring 20, and support ring 30 are all provided with spherical grooves 40;

[0045] The sealing ring 20 is provided with a spherical protrusion 50.

[0046] Furthermore, such as Figures 1 to 7 As shown, the pressure ring 10, sealing ring 20 and support ring 30 are nested together to form a multi-layer sealing structure. The initial pre-tightening force makes the two sides of the lip 24 contact the side walls of the dynamic sealing element 60 cavity on both sides of the sealing surface. Under the action of medium pressure, through the elastic deformation of the material and the pressure self-tightening effect, a dynamic sealing effect that increases with pressure is formed.

[0047] The pressure ring 10, several sealing rings 20, and support ring 30 are all installed in the cavity opened in the dynamic seal 60, together forming a sealing assembly.

[0048] Furthermore, the dynamic seal 60 provides a relatively enclosed space for the internal pressure ring 10, sealing ring 20, and support ring 30, which helps to create a more favorable sealing environment. The dynamic seal 60 itself cooperates with the relevant moving parts, and the pressure ring 10, sealing ring 20, and support ring 30 are installed inside it, together forming a complete dynamic sealing system.

[0049] Spherical grooves 40 are respectively opened on both sides of the pressure surface 11 and both sides of the sealing bottom 22 to accommodate spherical protrusions 50.

[0050] Furthermore, such as Figures 2 to 7As shown, by utilizing the shape matching of the spherical protrusion 50 and the spherical groove 40, the relative movement of the components is limited to a very small range, thus avoiding wear caused by relative displacement between the components.

[0051] The spherical protrusions 50 are fixed on both sides of the sealing concave surface 21 and the supporting concave surface 31, and are used to enter the spherical groove 40 to define the relative positions between the pressure ring 10 and the sealing ring 20, and between the sealing ring 20 and the supporting ring 30.

[0052] Furthermore, such as Figures 2 to 7 As shown, when the component is subjected to force, the spherical protrusion 50 forms a support within the spherical groove 40, preventing relative sliding between adjacent components.

[0053] The sealing ring 20 has a vertically downward sealing groove 23 in the middle of the sealing concave surface 21, which provides space for the downward movement of the sealing ring 20 installed above or the bottom of the pressure ring 10.

[0054] Furthermore, such as Figure 6 and Figure 7 As shown, when the pressure ring 10 or sealing ring 20 located above is installed downwards or subjected to force, its bottom can be inserted into the sealing groove 23 to drive the sealing concave surface 21 to move to both sides, further expanding the sealing range of the sealing ring 20 and enhancing the sealing effect.

[0055] The support ring 30 has a vertically downward support groove 32 in the middle of the support concave surface 31, which provides space for the sealing bottom 22 at the bottom of the sealing ring 20 installed above to move downward.

[0056] Furthermore, such as Figure 5 and Figure 7 As shown, this ensures the stability of the connection between the bottom support ring 30 and the upper sealing ring 20, guaranteeing their sealing performance.

[0057] The spherical protrusion 50 has a top cavity 51 at its top, a side cavity 52 on one side of its top, and the remaining solid part inside the spherical protrusion 50 is set as a solid end 53.

[0058] Furthermore, such as Figure 9As shown, the cavity design of the top cavity 51 and side cavity 52 enhances the elasticity of the spherical protrusion 50, while the solid part of the solid end 53 ensures the rigidity of the spherical protrusion 50. Simultaneously, when the upper component is compressed downwards, the inner wall of the spherical groove 40 at the bottom of the upper component wraps around the spherical protrusion 50 located above the lower component. Under downward pressure, the spherical protrusion 50 deforms. Since one side of the spherical protrusion 50 is solid and the other side is hollow, its top cavity 51 and side cavity 52 contract under pressure, while the solid end 53 supports one side, making the fit between the spherical protrusion 50 and the inner wall of the spherical groove 40 tighter, further reducing the relative displacement between components. Moreover, the upward deformation direction can absorb the axial pressure of the upper component, reducing the sliding friction of the contact surfaces of the pressure ring 10, sealing ring 20, and support ring 30, thereby reducing wear and extending the service life of the component.

[0059] The cross-sectional area of ​​the spherical protrusion 50 is greater than that of a half-circle of the same diameter, but less than that of a four-fifth-circle of the same diameter.

[0060] Furthermore, such as Figure 9 As shown, this ensures that the spherical groove 40 can enter the spherical protrusion 50, and that after entering, it will not easily come out of the spherical protrusion 50.

[0061] When the pressure ring 10, several sealing rings 20, and support ring 30 are installed, the support ring 30 is installed at the bottom, the pressure ring 10 is installed at the top, and several sealing rings 20 are installed between the pressure ring 10 and the support ring 30.

[0062] Furthermore, such as Figure 1 , Figures 4 to 7 As shown, by using multiple layers of sealing rings 20, a labyrinthine sealing path is formed through the nesting of V-shaped structures, increasing the resistance to fluid leakage. Furthermore, by increasing or decreasing the number of sealing rings 20, this sealing assembly can be adapted to various operating conditions, improving practicality and economy.

[0063] When the V-shaped leak-proof dynamic sealing assembly is in operation, the support ring 30 is installed at the bottom of the dynamic seal 60, the pressure ring 10 is installed at the top of the dynamic seal 60, and several sealing rings 20 are stacked between the two. The nesting of the V-shaped pressure surface 11 at the bottom of the pressure ring 10, the V-shaped sealing concave surfaces 21 and sealing bottom 22 of the sealing ring 20, and the V-shaped support concave surface 31 at the top of the support ring 30 forms a multi-layer sealing structure. The initial pre-tightening force causes the two sides of the lip 24 to contact the side wall of the cavity of the dynamic seal 60. When the medium is pressurized, the elastic deformation of the material and the pressure self-tightening effect cause the V-shaped structure to fit further, dynamically enhancing the sealing effect. Meanwhile, the spherical protrusion 50 of the sealing ring 20 is embedded in the spherical groove 40 of the pressure ring 10, the sealing ring 20, and the support ring 30. The elastic deformation of the spherical protrusion 50 tightly fits the inner wall of the spherical groove 40, limiting the relative displacement between the components and reducing the sliding friction and wear between them. The sealing groove 23 of the sealing ring 20 and the support groove 32 of the support ring 30 provide space for the movement of the upper and lower components, driving the V-shaped structure to expand the sealing range and increase the clamping force of the sealing surface. The multiple layers of sealing rings 20 are stacked to form a labyrinthine sealing path, increasing the fluid leakage resistance and ultimately achieving a long-lasting seal under the conditions of leak prevention and dynamic cooperation.

[0064] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A V-shaped leak-proof dynamic fit sealing assembly, characterized in that, include: Pressure ring (10), several sealing rings (20), support ring (30) and dynamic seal (60); The bottom of the pressure ring (10) is provided with pressure surfaces (11) that slope downwards on both sides in a V-shape; The sealing ring (20) has a downwardly inclined V-shaped sealing concave surface (21) and a sealing bottom (22) at the top and bottom respectively, and a lip (24) is formed between the sealing concave surface (21) and the sealing bottom (22); The top of the support ring (30) has a support concave surface (31) that slopes downward on both sides in a V-shape; The pressure ring (10), the sealing ring (20), and the support ring (30) are all provided with spherical grooves (40); The sealing ring (20) is provided with a spherical protrusion (50).

2. The V-shaped leak-proof dynamic fit sealing assembly according to claim 1, characterized in that, The pressure ring (10), several sealing rings (20), and the support ring (30) are all installed in the cavity opened in the dynamic seal (60) to form a sealing assembly.

3. The V-shaped leak-proof dynamic fit sealing assembly according to claim 1, characterized in that, The spherical grooves (40) are respectively opened on both sides of the pressure surface (11) and both sides of the sealing bottom (22) to accommodate the spherical protrusions (50).

4. The V-shaped leak-proof dynamic fit sealing assembly according to claim 1, characterized in that, The spherical protrusion (50) is fixed on both sides of the sealing concave surface (21) and the supporting concave surface (31) to enter the spherical groove (40) and define the relative positions between the pressure ring (10) and the sealing ring (20), and between the sealing ring (20) and the supporting ring (30).

5. The V-shaped leak-proof dynamic fit sealing assembly according to claim 1, characterized in that, The sealing ring (20) has a vertically downward sealing groove (23) in the middle of the sealing concave surface (21), which provides space for the downward movement of the bottom of the sealing ring (20) or the pressure ring (10) installed above.

6. The V-shaped leak-proof dynamic fit sealing assembly according to claim 1, characterized in that, The support ring (30) has a vertically downward support groove (32) in the middle of the support concave surface (31), which provides space for the sealing bottom (22) at the bottom of the sealing ring (20) installed above to move downward.

7. The V-shaped leak-proof dynamic fit sealing assembly according to claim 1, characterized in that, The spherical protrusion (50) has a top cavity (51) at its top, and a side cavity (52) is provided on one side of the top of the spherical protrusion (50). The remaining solid part inside the spherical protrusion (50) is set as a solid end (53).

8. A V-shaped leak-proof dynamic fit sealing assembly according to claim 1, characterized in that, The cross-sectional area of ​​the spherical protrusion (50) is greater than half the diameter of a circle of the same diameter, but less than four-fifths of the diameter of a circle of the same diameter.

9. A V-shaped leak-proof dynamic fit sealing assembly according to claim 1, characterized in that, When the pressure ring (10), the plurality of sealing rings (20), and the support ring (30) are installed, the support ring (30) is installed at the bottom, the pressure ring (10) is installed at the top, and the plurality of sealing rings (20) are installed between the pressure ring (10) and the support ring (30).

Images