Thickened lip-shaped sealing strip

Abstract

The utility model discloses a thickened lip-shaped sealing strip which comprises a main body and a sealing lip edge, a lip opening is arranged between the main body and the sealing lip edge, the outer side end of the sealing lip edge is connected with the outer side end of the main body, and the inner side end of the sealing lip edge is upwards lifted in an inclined mode. According to the thickened lip-shaped sealing strip, the problem that a traditional sealing strip is limited to be used in the high-temperature, high-pressure and high-corrosion environment is solved, and therefore the sealing performance is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sealing strip technology, specifically to a thickened lip-shaped sealing strip. Background Technology

[0002] Mechanical seal technology plays a crucial role in modern industrial production, especially in applications involving fluid transmission and pressure vessels. Lip seals, as an important form of sealing technology, are widely used in various industries such as chemical engineering, automotive manufacturing, and aerospace. These seals are typically used to prevent fluid leakage while reducing friction and wear, ensuring the safe operation of mechanical equipment and extending its service life.

[0003] Traditional lip seals are usually made of elastic materials and have a simple structure. However, under some extreme conditions, such as high temperature, high pressure, and highly corrosive environments, traditional seals may not be able to meet the sealing requirements.

[0004] Therefore, a thickened lip sealing strip is needed to solve the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a thickened lip sealing strip to solve the problem of limited use of traditional sealing strips in high temperature, high pressure and high corrosion environments, thereby improving sealing performance and extending service life.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A thickened lip-shaped sealing strip includes a body and a sealing lip. A lip opening is provided between the body and the sealing lip, and the outer end of the sealing lip is connected to the outer end of the body, while the inner end of the sealing lip is obliquely raised upward.

[0008] As a further improvement to the above technical solution, the main body and the sealing lip are integrally formed.

[0009] As a further improvement to the above technical solution, the main body is configured in a trapezoidal structure, with both bottom corners of the main body set to 86°, the bottom width of the main body being 19±0.1mm, and the height of the main body being 7.5±0.1mm.

[0010] As a further improvement to the above technical solution, a deformation notch is provided at the lower middle part of the main body, and the width of the deformation notch is 3±0.1mm.

[0011] As a further improvement to the above technical solution, the sealing lip includes an inner arc edge, an outer arc edge, and a circular arc, and the inner arc edge and the outer arc edge are smoothly connected by the circular arc.

[0012] As a further improvement to the above technical solution, the radius of the arc is set to 0.5±0.1mm.

[0013] As a further improvement to the above technical solution, the outer end of the lip is provided with an arc-shaped structure.

[0014] As a further improvement to the above technical solution, the thickened lip sealing strip is made of fluororubber.

[0015] The beneficial effects of this utility model are:

[0016] This invention utilizes a one-piece molded main body and sealing lip, with the inner end of the sealing lip angled upwards, increasing the effective contact area between the sealing strip and the contact surface. Simultaneously, a deformation notch is provided in the lower center of the main body to allow the sealing strip to deform as needed, optimizing stress distribution and reducing localized wear and deformation. This ensures a stable sealing effect even under high temperature and high pressure conditions, effectively preventing fluid leakage. Furthermore, the thickened lip sealing strip is made of fluororubber, a material with excellent wear resistance, high temperature resistance, and corrosion resistance, maintaining a stable sealing effect even under harsh working conditions. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a cross-sectional structural diagram of the thickened lip-shaped sealing strip of this utility model.

[0019] Reference numerals: 1. Main body; 2. Sealing lip; 21. Inner arc edge; 22. Outer arc edge; 23. Arc; 3. Lip; 4. Deformation notch. Detailed Implementation

[0020] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0021] Reference Figure 1 A thickened lip-shaped sealing strip includes a main body 1 and a sealing lip 2. A lip 3 is provided between the main body 1 and the sealing lip 2. The lip 3 is the transition area between the main body 1 and the sealing lip 2, which is crucial for the sealing effect and directly affects the contact pressure and contact area between the sealing lip 2 and the surface to be sealed. This design greatly enhances the sealing performance. The outer end of the sealing lip 2 is connected to the outer end of the main body 1, ensuring the overall stability and durability. The connection is seamless, further improving the sealing effect. The inner end of the sealing lip 2 is angled upward. When the sealing lip 2 contacts the surface to be sealed, it not only allows the sealing strip to form a tighter fit on the contact surface, but also effectively prevents the intrusion of external substances such as dust and moisture, thus providing excellent sealing protection in various environments.

[0022] Reference Figure 1 In the embodiments of this utility model, the main body 1 and the sealing lip 2 are integrally formed, and the integral forming process is adopted to eliminate the seam between the main body 1 and the sealing lip 2, thereby reducing potential leakage paths and helping to improve the reliability and durability of the seal, especially in high pressure, high temperature or corrosive environments; on the other hand, it greatly reduces the assembly steps and the number of parts required in the manufacturing process, and reduces manufacturing costs and time.

[0023] Reference Figure 1In this embodiment of the invention, the main body 1 is configured in a trapezoidal structure. To ensure the stability and support capacity of the main body 1, both base angles of the main body 1 are set to 86°, resulting in a relatively gentle inclination angle between the sides of the trapezoid and the base. The bottom width of the main body 1 is 19±0.1mm, and the height of the main body 1 is 7.5±0.1mm. Specific applications will depend on the overall design and functional requirements of the product in which it is located. Therefore, during the design and manufacturing process, it is necessary to carefully consider how these parameters interact with other components and system requirements to ensure the performance and reliability of the final product.

[0024] Reference Figure 1 In this embodiment of the invention, a deformation notch 4 is provided at the lower center of the main body 1 to facilitate the fixed installation of the sealing strip. Simultaneously, it allows the main body 1 to deform to a certain extent under specific conditions to adapt to different installation conditions, working environments, or stress states, effectively increasing the flexibility of the main body and reducing the risk of damage caused by stress concentration. In this embodiment, the width of the deformation notch 4 is 3±0.1mm. This precise control is crucial to ensuring that the deformation notch 4 functions under the expected conditions. A notch that is too wide may cause excessive deformation of the main body 1, while a notch that is too narrow may not provide sufficient deformation capacity.

[0025] Reference Figure 1 In this embodiment of the invention, the sealing lip 2 includes an inner arc edge 21, an outer arc edge 22, and a circular arc 23. The inner arc edge 21 and the outer arc edge 22 are smoothly connected by the circular arc 23. The inner arc edge 21 is the edge that contacts the interior of the component to be sealed, and the outer arc edge 22 is the edge that contacts the external environment or adjacent components. The circular arc 23, as a key part connecting the inner arc edge 21 and the outer arc edge 22, provides a smooth transition, reducing stress concentration caused by abrupt shape changes, thereby improving the durability and sealing effect of the sealing lip 2. In this embodiment, the radius of the circular arc 23 is set to 0.5±0.1mm. This size is chosen based on a comprehensive consideration of sealing performance, material strength, and manufacturing process. A smaller radius can provide a tighter seal but may also increase friction and wear; a larger radius may reduce the sealing effect but improve durability. Therefore, a radius range of 0.5±0.1mm is a preferred value that strikes a balance between performance and durability.

[0026] Reference Figure 1In the embodiments of this utility model, the outer end of the lip 3 is provided with an arc-shaped structure. This design is generally intended to optimize the contact between the sealing lip 2 and the surface to be sealed, improve the sealing effect, and reduce stress concentration caused by abrupt changes in shape. It helps to form a tighter fit during the sealing process, reduces the risk of leakage, and thus improves the reliability and efficiency of the seal.

[0027] Reference Figure 1 In the embodiments of this utility model, the thickened lip sealing strip is made of fluororubber. Fluororubber exhibits extremely high corrosion resistance to a variety of chemicals, including acids, alkalis, organic solvents, and oils, and can maintain its physical and chemical properties unchanged at high temperatures, possessing excellent thermal stability. It also has excellent elasticity and resilience, allowing it to deform under pressure and quickly return to its original shape after the pressure is released. Based on the many excellent properties of fluororubber, these properties make it an ideal material for many sealing applications to improve the service life of seals.

[0028] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A thickened lip-shaped sealing strip, characterized in that: It includes a main body and a sealing lip. A lip is provided between the main body and the sealing lip, and the outer end of the sealing lip is connected to the outer end of the main body, while the inner end of the sealing lip is obliquely raised upward.

2. The thickened lip sealing strip according to claim 1, characterized in that: The main body and the sealing lip are integrally formed.

3. The thickened lip sealing strip according to claim 1, characterized in that: The main body is configured in a trapezoidal structure, with both bottom corners set to 86°, the bottom width of the main body being 19±0.1mm, and the height of the main body being 7.5±0.1mm.

4. The thickened lip sealing strip according to claim 1, characterized in that: A deformation notch is provided at the lower center of the main body, and the width of the deformation notch is 3±0.1mm.

5. A thickened lip-shaped sealing strip according to claim 1, characterized in that: The sealing lip includes an inner arc edge, an outer arc edge, and a circular arc, with the inner arc edge and the outer arc edge smoothly connected by the circular arc.

6. A thickened lip-shaped sealing strip according to claim 5, characterized in that: The radius of the arc is set to 0.5±0.1mm.

7. A thickened lip sealing strip according to claim 1, characterized in that: The outer end of the lip is provided with an arc-shaped structure.

8. A thickened lip sealing strip according to claim 1, characterized in that: The thickened lip-shaped sealing strip is made of fluororubber.

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