Dry-grinding-resistant mechanical sealing element
By combining the stationary ring, rotating ring, and connecting ring, along with the design of the limiting plate and heat dissipation fins, the wear problem of traditional mechanical seals under dry friction conditions is solved, achieving long service life and efficient operation of the seals.
Patent Information
- Application Number
- CN202423271135.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional mechanical seals suffer severe wear under dry friction conditions, leading to decreased sealing performance, media leakage, environmental pollution, and shortened equipment lifespan.
A dry-wear resistant mechanical seal was designed. The sealing effect is enhanced by the cooperation of the stationary ring, the moving ring and the connecting ring, combined with the limiting plate and heat dissipation fins. The force is evenly transmitted by the cooperation of the spring and the retaining plate to avoid local wear.
It effectively prevents excessive wear on the sealing surface, extends service life, maintains stable operation of the seals, reduces maintenance frequency and operating costs, and improves equipment efficiency.
Smart Images
Figure CN223662576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical seal technology, and in particular to a dry-wear resistant mechanical seal. Background Technology
[0002] In modern industry, mechanical seals are key components ensuring the efficient and stable operation of various rotating machinery. Their performance directly affects the continuity and safety of production processes. Traditional mechanical seals, under good lubrication conditions, can effectively prevent media leakage. However, ordinary mechanical seals lack effective lubrication and cooling media between the friction pairs, leading to rapid increase in dry friction, severe wear of the sealing surface, and a sharp decline in sealing performance. This not only causes significant media leakage, resulting in environmental pollution and resource waste, but also significantly shortens equipment lifespan, increases the cost of frequent maintenance and component replacement, and severely hinders the efficient advancement of industrial production.
[0003] However, traditional sealing structures generate a lot of heat during operation, and high temperatures accelerate the wear of sealing materials. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a dry-wear resistant mechanical seal, which aims to improve the problem that a large amount of heat is generated during operation, and high temperature will accelerate the wear of the sealing material.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a dry-wear resistant mechanical seal, comprising a bearing body, a rotating ring disposed on the outer wall of the bearing body, a connecting ring fitted to the outer wall of the rotating ring, a cover plate fitted to the outer wall of the connecting ring, a fixing post fixedly connected to the outer wall of the cover plate, limit plates fixedly connected to both sides of the outer wall of the fixing post, a fixing groove formed inside the rotating ring, the outer wall of the limit plate rotatably connected to the inner wall of the fixing groove, a limit groove formed inside the connecting ring, the outer wall of the limit plate slidably connected to the inner wall of the limit groove, heat dissipation fins disposed on the outer wall of the connecting ring, and a sealing assembly disposed on the outer wall of the bearing body, the sealing assembly being used for sealing.
[0006] Preferably, the sealing assembly includes a sealing gasket, the inner wall of which is fitted to the outer wall of the bearing body, and the sealing gasket is annular.
[0007] Preferably, the outer wall of the bearing body is provided with a stationary ring, and a spring is provided inside the stationary ring.
[0008] Preferably, a traveling plate is fixedly connected to the outer wall of the spring, and the outer wall of the traveling plate is attached to the inner wall of the stationary ring.
[0009] Preferably, a retaining plate is fixedly connected to the outer wall of the traveling plate, and the outer wall of the retaining plate is slidably connected to the inner wall of the stationary ring.
[0010] Preferably, the outer wall of the card plate is slidably connected to the inner wall of the bearing body.
[0011] This utility model has the following beneficial effects:
[0012] 1. In this utility model, the stationary ring, the rotating ring and the connecting ring cooperate with each other to improve the sealing effect. The rotating ring is connected to the connecting ring by a limiting plate. The limiting plate slides in the groove to ensure that the relative position of the rotating ring is stable when it rotates. The heat dissipation fins on the connecting ring can dissipate heat to prevent the temperature from getting too high due to dry friction, maintain the material performance, reduce wear, and it can be disassembled and cleaned to effectively ensure the stable operation of the sealing component.
[0013] 2. In this utility model, the traveling plate and the clamping plate cooperate to transmit the spring force evenly and stably to the stationary ring, avoiding excessive wear of the sealing surface due to local pressure concentration. This lays a solid foundation for the long-term stable operation of the sealing components, effectively extending their service life, enhancing their reliability and durability, ensuring stable and efficient operation of the equipment, reducing maintenance frequency, lowering operating costs, and improving overall efficiency. Attached Figure Description
[0014] Figure 1 This is a three-dimensional schematic diagram of a dry-wear resistant mechanical seal proposed in this utility model;
[0015] Figure 2 This is a partial structural diagram of the heat dissipation fins of a dry-wear resistant mechanical seal proposed in this utility model.
[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0017] Figure 4 for Figure 2 Enlarged diagram of point B in the middle.
[0018] Legend:
[0019] 1. Bearing body; 2. Moving ring; 3. Connecting ring; 4. Cover plate; 5. Fixing post; 6. Limiting plate; 7. Fixing groove; 8. Limiting groove; 9. Heat dissipation fins; 10. Stationary ring; 11. Spring; 12. Traveling plate; 13. Clamping plate; 14. Sealing gasket. Detailed Implementation
[0020] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0021] Reference Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model provides a dry-wear resistant mechanical seal, comprising a bearing body 1, a rotating ring 2 on the outer wall of the bearing body 1, a connecting ring 3 attached to the outer wall of the rotating ring 2, a cover plate 4 attached to the outer wall of the connecting ring 3, a fixing post 5 fixedly connected to the outer wall of the cover plate 4, and limiting plates 6 fixedly connected to both sides of the outer wall of the fixing post 5. A fixing groove 7 is provided inside the rotating ring 2, and the outer wall of the limiting plate 6 is rotatably connected to the inner wall of the fixing groove 7. A limiting groove 8 is provided inside the connecting ring 3, and the outer wall of the limiting plate 6 is slidably connected to the inner wall of the limiting groove 8. A heat dissipation fin 9 is provided on the outer wall of the bearing body 1, and a sealing assembly is provided on the outer wall of the bearing body 1 for sealing.
[0022] Specifically, the cooperation between the stationary ring 10, the moving ring 2, and the connecting ring 3 enhances the sealing effect. The moving ring 2 is connected to the connecting ring 3 through the limiting plate 6. The limiting plate 6 slides in the fixing groove 7 and the limiting groove 8 to ensure that the moving ring 2 can maintain its relative position with the connecting ring 3 when rotating. The heat dissipation fins 9 on the connecting ring 3 help to dissipate the heat generated by friction, prevent the temperature from being too high due to dry friction, maintain the original mechanical properties of the material, reduce wear, and facilitate the disassembly and cleaning of the heat dissipation fins 9.
[0023] Reference Figure 1 The sealing assembly includes a sealing gasket 14, the inner wall of which is attached to the outer wall of the bearing body 1, and the sealing gasket 14 is annular.
[0024] Specifically, the sealing gasket 14 is tightly fitted to the outer wall of the bearing body 1 to form a preliminary seal and prevent media leakage.
[0025] Reference Figure 1 - Figure 3 A stationary ring 10 is provided on the outer wall of the bearing body 1, and a spring 11 is provided inside the stationary ring 10. A traveling plate 12 is fixedly connected to the outer wall of the spring 11, and the outer wall of the traveling plate 12 is attached to the inner wall of the stationary ring 10. A retaining plate 13 is fixedly connected to the outer wall of the traveling plate 12, and the outer wall of the retaining plate 13 is slidably connected to the inner wall of the stationary ring 10. The outer wall of the retaining plate 13 is slidably connected to the inner wall of the bearing body 1.
[0026] Specifically, the spring 11 inside the stationary ring 10 provides axial force, ensuring a tight fit between the stationary ring 10 and the rotating ring 2. The design of the traveling plate 12 and the clamping plate 13 ensures that the force of the spring 11 can be evenly transmitted to the stationary ring 10, preventing wear of the sealing surface caused by excessive local pressure, thereby extending the service life of the seal and maintaining tight contact of the sealing surface. The traveling plate 12 and the clamping plate 13 work together to distribute and transmit the force generated by the spring 11 to the stationary ring 10 in a uniform and stable manner. This uniform force distribution effectively avoids excessive wear of the sealing surface caused by excessive concentration of local pressure, providing a solid guarantee for the long-term stable operation of the seal, thereby significantly extending the overall service life of the seal and ensuring its reliability and durability during operation.
[0027] Working principle: The sealing gasket 14 is tightly fitted to the outer wall of the bearing body 1 to form a preliminary seal and prevent media leakage. The mutual cooperation between the stationary ring 10, the rotating ring 2 and the connecting ring 3 further enhances the sealing effect. The spring 11 inside the stationary ring 10 provides axial force, making the stationary ring 10 and the rotating ring 2 fit tightly. The design of the traveling plate 12 and the clamping plate 13 ensures that the force of the spring 11 can be evenly transmitted to the stationary ring 10, thereby preventing the wear of the sealing surface caused by excessive local pressure, thus extending the service life of the seal and maintaining the tight contact of the sealing surface. The rotating ring 2 is connected to the connecting ring 3 through the limiting plate 6. The limiting plate 6 slides in the fixing groove 7 and the limiting groove 8 to ensure that the rotating ring 2 can maintain the relative position with the connecting ring 3 when rotating. The heat dissipation fins 9 on the connecting ring 3 help to dissipate the heat generated by friction, prevent the temperature from being too high due to dry friction, maintain the original mechanical properties of the material, reduce wear and imitate the effect of disassembling and cleaning the heat dissipation fins 9.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A dry-wear resistant mechanical seal, comprising a bearing body (1), characterized in that: The outer wall of the bearing body (1) is provided with a moving ring (2), the outer wall of the moving ring (2) is fitted with a connecting ring (3), the outer wall of the connecting ring (3) is fitted with a cover plate (4), the outer wall of the cover plate (4) is fixedly connected with a fixing column (5), the outer walls of the fixing column (5) are fixedly connected with limit plates (6) on both sides, the moving ring (2) is provided with a fixing groove (7), the outer wall of the limit plate (6) is rotatably connected to the inner wall of the fixing groove (7), the inner wall of the connecting ring (3) is provided with a limit groove (8), the outer wall of the limit plate (6) is slidably connected to the inner wall of the limit groove (8), the outer wall of the connecting ring (3) is provided with heat dissipation fins (9), and the outer wall of the bearing body (1) is provided with a sealing assembly for sealing.
2. The dry-wear resistant mechanical seal according to claim 1, characterized in that: The sealing assembly includes a sealing gasket (14), the inner wall of which is attached to the outer wall of the bearing body (1), and the sealing gasket (14) is annular.
3. The dry-wear resistant mechanical seal according to claim 2, characterized in that: The outer wall of the bearing body (1) is provided with a stationary ring (10), and a spring (11) is provided inside the stationary ring (10).
4. A dry-wear resistant mechanical seal according to claim 3, characterized in that: The outer wall of the spring (11) is fixedly connected to the traveling plate (12), and the outer wall of the traveling plate (12) is attached to the inner wall of the stationary ring (10).
5. A dry-wear resistant mechanical seal according to claim 4, characterized in that: The outer wall of the traveling plate (12) is fixedly connected to a clamping plate (13), and the outer wall of the clamping plate (13) is slidably connected to the inner wall of the stationary ring (10).
6. A dry-wear resistant mechanical seal according to claim 5, characterized in that: The outer wall of the card plate (13) is slidably connected to the inner wall of the bearing body (1).