Lip-shaped sealing ring
By adopting a wavy waist design and embedded metal springs in the lip seal ring, combined with the metal abutment ring and spring sheet, the problem of traditional seal rings prone to deformation and leakage under high pressure and high temperature is solved, and better sealing performance is achieved.
Patent Information
- Application Number
- CN202422203511.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The waist design of traditional lip sealing rings is prone to deformation and leakage, especially in high-pressure environments, with poor sealing effect.
It adopts a wavy waist design and embedded metal springs, combining metal abutment rings and spring sheets to enhance the support performance and stability of the sealing ring, prevent the sealing ring from being extruded, and avoid sticking in high temperature environments.
Improve the waist support performance and stability of the sealing ring, preventing leakage and sticking of the sealing ring in high pressure and high temperature environments, and ensuring sealing effect.
Smart Images
Figure CN223076228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing rings, and particularly relates to a lip-shaped sealing ring. Background Art
[0002] A quick-opening blind flange is a mechanical device used on a circular opening of a pressure pipeline or pressure vessel that can achieve quick opening or closing. It generally consists of components such as a cylinder flange, a head cover, a hook ring or a clamp, a sealing ring, a safety interlock mechanism, an opening and closing mechanism, a rotating arm, etc. The sealing ring of the quick-opening blind flange mainly prevents the medium in the pipeline or container from leaking and plays a role in sealing the medium. Generally, a self-tightening seal structure is adopted. The higher the medium pressure, the greater the pressure at the sealing surface and the better the sealing effect.
[0003] The structural principle of a lock-shaped quick-opening blind flange is to lock the blind flange head cover on the blind flange cylinder body by using a retractable lock ring. Its structural characteristics determine that the sealing method between the blind flange head cover and the blind flange cylinder body can only adopt a self-tightening sealing ring structure. The upper lip body and the lower lip body of the currently used self-tightening sealing ring enclose a central cavity. The pressure in the high-pressure pipeline or container is conducted into the central cavity, prompting the upper and lower lip bodies to respectively press on the blind flange head cover and the blind flange cylinder body to form a self-tightening seal. The greater the pressure, the better the sealing effect. However, the waist of the traditional lip-shaped sealing ring usually adopts a single cylindrical design, which is prone to problems such as waist deformation and leakage. Content of the Utility Model
[0004] The utility model provides a lip-shaped sealing ring to solve the above problems.
[0005] The utility model is realized through the following technical solutions:
[0006] A lip-shaped sealing ring includes a ring-shaped sealing ring body. The longitudinal section of the sealing ring body consists of a lip part and a waist part. Among them, the lip part includes an upper lip body and a lower lip body respectively connected to the waist part. A cavity is formed between the upper lip body and the lower lip body. The side of the waist part away from the cavity is wavy, and an annular metal spring is embedded in the sealing ring body. The ring formed by the metal spring is coaxially arranged with the annular sealing ring body.
[0007] In this technical solution, a unique wavy waist design is adopted, so that the waist can disperse the pressure more evenly when subjected to pressure, improving the support performance and stability of the waist. The setting of the metal spring can prevent the sealing ring body from being extruded and also ensure the hardness and support force of the sealing ring body.
[0008] As an optimization, the metal spring is located at the top corner near the upper lip body.
[0009] As an optimization, the metal spring is located at the top corner near the lower part of the waist.
[0010] As an optimization, the metal spring is located at the vertex angle near the upper part of the waist.
[0011] As an optimization, an annular spring piece is inlaid on the part where the waist protrudes away from the cavity, and the longitudinal section of the spring piece is arc-shaped.
[0012] In this way, by setting the spring piece, a longitudinal elastic tension is preset for the sealing ring body, so that the upper and lower end faces of the sealing ring body are closely attached to the grooves in the door cover. At the same time, the rigidity of the sealing ring body can also be improved.
[0013] As an optimization, an annular metal upper contact ring is inlaid on the upper contact surface above the waist and abutting against the door cover, and the contact dimensions of the metal upper contact ring are the same as those of the upper contact surface.
[0014] In this way, by setting the metal upper contact ring and the upper end face of the metal upper contact ring abuts against the upper end face of the groove, it can avoid the sealing ring body melting and sticking to the door cover in a high-temperature environment.
[0015] As an optimization, the longitudinal section of the metal upper contact ring is rectangular.
[0016] In this way, it can make good contact with the inner side wall of the groove of the door cover.
[0017] As an optimization, the metal upper contact ring is coaxially arranged with the sealing ring body.
[0018] As an optimization, the spring piece is concentrically arranged with the wavy shape of the waist.
[0019] As an optimization, the material of the spring piece is a metal elastic material.
[0020] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0021] The utility model adopts a unique wavy waist design, so that the waist can disperse pressure more evenly when under pressure, improving the support performance and stability of the waist. The setting of the metal spring can prevent the sealing ring body from being extruded and also ensure the hardness and support force of the sealing ring body.
[0022] The utility model avoids the sealing ring body melting and sticking to the door cover in a high-temperature environment by setting a metal upper contact ring and the upper end face of the metal upper contact ring abutting against the upper end face of the groove.
[0023] The utility model preset a longitudinal elastic tension for the sealing ring body by setting the spring piece, so that the upper and lower end faces of the sealing ring body are closely attached to the grooves in the door cover. At the same time, the rigidity of the sealing ring body can also be improved. Description of the Drawings
[0024] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation to the embodiments of the present utility model. In the drawings:
[0025] Figure 1 It is a schematic structural diagram of one of the lip seals described in the present utility model;
[0026] Figure 2 is Figure 1 a schematic structural diagram of the seal ring body in installed in the groove on the door cover;
[0027] Figure 3 is Figure 1 a schematic structural diagram of the seal ring body in installed with a spring piece;
[0028] Figure 4 is Figure 3 a schematic structural diagram of the seal ring body in installed with a metal abutting ring;
[0029] Figure 5 It is another schematic structural diagram of the lip seal described in the present utility model;
[0030] Figure 6 It is another schematic structural diagram of the lip seal described in the present utility model.
[0031] Marks and corresponding component names in the drawings:
[0032] A - waist, B - lip, 1 - upper lip body, 2 - lower lip body, 3 - cavity, 4 - metal spring, 5 - metal abutting ring, 6 - spring piece, 7 - door cover. Detailed implementation manners
[0033] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. The illustrative embodiments and descriptions of the present utility model are only used to explain the present utility model and do not constitute a limitation to the present utility model.
[0034] Embodiment 1 of the present utility model provides a lip seal, as Figure 1 shown, including a ring-shaped seal ring body. The longitudinal section of the seal ring body is composed of a lip B and a waist A. Among them, the lip B includes an upper lip body 1 and a lower lip body 2 respectively connected to the waist A. A cavity 3 is formed between the upper lip body 1 and the lower lip body 2. The side of the waist A away from the cavity 3 is wavy, and an annular metal spring 4 is embedded in the seal ring body. The ring formed by the metal spring 4 is coaxially arranged with the annular seal ring body.
[0035] In this technical solution, a unique wavy waist design is adopted, enabling the waist to more evenly disperse pressure when under pressure, improving the support performance and stability of the waist. The setting of the metal spring can prevent the sealing ring body from being extruded and also ensure the hardness and support force of the sealing ring body. The material of the sealing ring body can be fluororubber or nitrile rubber.
[0036] As Figure 1 shown, in this embodiment, the metal spring 4 is located at the apex near the lower part of the waist.
[0037] As Figure 2 shown, it is a schematic diagram of installing the sealing ring body in the groove of the door cover in this embodiment. It should be noted that the upper and lower orientations in this embodiment are based on Figure 1 , 2 shown above and below. The cavity of the sealing ring body communicates with the inner cavity of the blind plate cylinder.
[0038] As Figure 3 shown, an annular spring piece 6 is inlaid in the part of the waist A protruding away from the cavity. The longitudinal section of the spring piece 6 is arc-shaped, and the material of the spring piece 6 is a metal elastic material.
[0039] By setting the spring piece, a longitudinal elastic tension is preset for the sealing ring body, enabling the sealing ring body to closely fit with the upper and lower end faces of the groove in the door cover. At the same time, it can also improve the rigidity of the sealing ring body.
[0040] In this embodiment, the spring piece 6 is concentrically arranged with the wavy shape of the waist A. In this way, the spring piece can fit well with the wavy shape of the waist.
[0041] As Figure 4 shown, in this embodiment, an annular metal upper contact ring 5 is inlaid on the upper contact surface above the waist A and in contact with the door cover. The contact dimensions of the metal upper contact ring 5 are the same as those of the upper contact surface. Here, the dimensions refer to the area. The contact area of the metal upper contact ring is the same as the contact area of the upper contact surface. Therefore, the contact between the upper part of the sealing ring body and the groove depends entirely on the metal upper contact ring. The longitudinal section of the metal upper contact ring 5 is rectangular. By setting the metal upper contact ring and making the upper end surface of the metal upper contact ring in contact with the upper end surface of the groove, this can prevent the sealing ring body from melting and sticking to the door cover in a high-temperature environment.
[0042] In this embodiment, the metal upper contact ring 5 is coaxially arranged with the sealing ring body. In this way, it can ensure that the metal upper contact ring is completely in contact with the door cover.
[0043] The difference between Embodiment 2 and Embodiment 1 is that the metal spring 4 is located at the apex near the upper lip body.
[0044] The difference between Embodiment 3 and Embodiment 1 is that the metal spring 4 is located at the vertex angle near the upper part of the waist.
[0045] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above description is only the specific embodiments of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
[0046] The above description is only the preferred embodiments of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
[0047] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
[0048] In summary, although the present utility model has been disclosed as above with embodiments, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model belongs can make various changes and refinements without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to that defined by the appended patent application scope.
[0049] Those skilled in the art should understand that within the scope of the claims and their equivalents, various variations, combinations, sub - combinations, and substitutions can be made according to design requirements and other factors.
[0050] The technical features of the above - described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above - described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.
[0051] At the same time, the devices used in this specification are all existing devices, and those skilled in the art can obtain them through purchase, reference, etc.
Claims
1. A lip seal ring, characterized in that, It includes an annular sealing ring body. The longitudinal section of the sealing ring body consists of a lip part (B) and a waist part (A). Among them, the lip part (B) includes an upper lip body (1) and a lower lip body (2) respectively connected to the waist part (A). A cavity (3) is formed between the upper lip body (1) and the lower lip body (2). The side of the waist part (A) away from the cavity (3) is wavy. And an annular metal spring (4) is embedded in the sealing ring body. The ring formed by the metal spring (4) is coaxially arranged with the annular sealing ring body.
2. The lip seal according to claim 1, wherein The metal spring (4) is located at the vertex angle close to the upper lip body.
3. A lip seal according to claim 1, characterized in that, The metal spring (4) is located at the vertex angle close to the lower part of the waist.
4. A lip seal according to claim 1, characterized in that, The metal spring (4) is located at the vertex angle close to the upper part of the waist.
5. A lip seal according to any one of claims 1-4, characterized in that, An annular spring piece (6) is embedded in the part of the waist part (A) protruding away from the cavity. The longitudinal section of the spring piece (6) is arc-shaped.
6. The lip seal according to claim 5, characterized in that, An annular metal upper contact ring (5) is embedded in the upper contact surface located above the waist part (A) and in contact with the door cover. The contact size of the metal upper contact ring (5) is the same as that of the upper contact surface.
7. The lip seal according to claim 6, wherein, The longitudinal section of the metal upper contact ring (5) is rectangular.
8. A lip seal according to claim 6, characterized in that, The metal upper contact ring (5) is coaxially arranged with the sealing ring body.
9. The lip seal according to claim 5, wherein The spring piece (6) is concentrically arranged with the wavy shape of the waist part (A).
10. A lip seal according to claim 5, characterized in that, The material of the spring piece (6) is a metal elastic material.