Sealing device
By using buffer grooves, slide rods, second springs and snap rings in the sealing device to cooperate with the outer sealed silicon carbide ring, the problem of fragility and fragility of silicon carbide rings is solved, its strength is enhanced and stable installation is achieved, avoiding Rotate dislocation.
Patent Information
- Application Number
- CN202420742618.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-11
AI Technical Summary
Due to the limited design space of the mechanically sealed outer seal ring, silicon carbide material is fragile and fragile, making it difficult to effectively protect and enhance its strength.
A sealing device is designed to increase the protection and strength of the silicon carbide ring through the coupling of the buffer groove, slide rod, second spring, snap ring and outer sealed silicon carbide ring and groove, and cooperate with the second spring and slide plate. The silicon carbide ring is tightened and buffered to avoid misalignment rotation.
Effectively protect the silicon carbide ring, enhance its strength, avoid fragmentation, and achieve stable installation of the silicon carbide ring through the cooperation of the spring and the slide to prevent misalignment and rotation.
Smart Images
Figure CN222315929U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical seals, in particular to a sealing device. Background Art
[0002] A sealing ring is an annular sealing component with a notch. It is placed in the annular groove of a sleeve. The sleeve rotates with the shaft. The sealing ring is pressed against the inner hole wall of the stationary part by the elasticity of the notch being pressed together. The sealing ring of a mechanical seal is generally a silicon carbide ring. The outer sealing ring of the mechanical seal has a limited design space, so its silicon carbide ring is exposed to the outside and rotates. Since silicon carbide is a brittle material, it is easy to break. For this reason, we propose a sealing device. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides a sealing device to solve the problems raised in the above background technology.
[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a sealing device comprises a main shaft, a dynamic ring is fixedly installed on the outer side of the main shaft, a static ring is rotatably installed on the outer side of the main shaft, an external thread is provided on the outer side of the dynamic ring, a threaded sleeve is threadedly installed on the outer side of the external thread, a sliding groove is provided inside the outer side of the threaded sleeve, a guide rod is fixedly installed inside the sliding groove, a slider is slidably installed on the outer side of the guide rod, a first spring is installed on the outer side of the guide rod and on one side of the slider, a clamping sleeve is fixedly installed on the top of the slider, a rotating groove is provided inside one side of the threaded sleeve, a rotating rod is rotatably installed inside the rotating groove, a buffer groove is provided inside the rotating rod, a sliding rod is slidably installed inside the buffer groove, a second spring is installed inside the buffer groove, one end of the sliding rod extends to the inside of the buffer groove and a sliding plate is installed, a retaining ring is fixedly installed on the bottom of the sliding rod, an external sealing silicon carbide ring is sleeved on the outer side of the main shaft and located in the middle of the dynamic ring and the static ring, a groove is provided inside the outer side of the external sealing silicon carbide ring, and the retaining ring cooperates with the groove.
[0005] Preferably, a sealing ring is fixedly mounted on the top of the stationary ring, and the outer sealing silicon carbide ring cooperates with the sealing ring.
[0006] Preferably, the slider is slidably connected to the slide groove, and a hole cooperating with the guide rod is provided inside the slider.
[0007] Preferably, the ferrule is slidably connected to the threaded sleeve.
[0008] Preferably, the ferrule cooperates with the rotating rod.
[0009] Preferably, a hole cooperating with the sliding rod is opened inside one side of the rotating rod.
[0010] The utility model provides a sealing device, which has the following beneficial effects:
[0011] The sealing device cooperates with the outer sealing silicon carbide ring and the groove through the buffer groove, the sliding rod, the second spring, the slide plate, the clamping ring and the groove. After installation, the protection of the outer sealing silicon carbide ring is increased through the cooperation of the clamping ring and the groove, and the strength of the outer sealing silicon carbide ring is also increased, and the fragility of silicon carbide is improved. The second spring and the slide plate can cooperate to tighten and buffer the outer sealing silicon carbide ring, thereby avoiding the occurrence of misaligned rotation of the outer sealing silicon carbide ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model;
[0013] Figure 2 For this utility model Figure 1 A in the enlarged view;
[0014] Figure 3 For this utility model Figure 1 The enlarged view of point B in the figure;
[0015] Figure 4 For this utility model Figure 1 Enlarged view of point C in the figure.
[0016] In the figure: 1. main shaft; 2. moving ring; 3. stationary ring; 4. external thread; 5. threaded sleeve; 6. slide groove; 7. guide rod; 8. slider; 9. first spring; 10. ferrule; 11. rotating groove; 12. rotating rod; 13. buffer groove; 14. slider; 15. second spring; 16. slide plate; 17. retaining ring; 18. external sealing silicon carbide ring; 19. groove; 20. sealing collar. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0018] See also Figures 1 to 4The utility model provides a technical solution: a sealing device comprises a main shaft 1, a dynamic ring 2 is fixedly installed on the outer side of the main shaft 1, a static ring 3 is rotatably installed on the outer side of the main shaft 1, an external thread 4 is provided on the outer side of the dynamic ring 2, a threaded sleeve 5 is threadedly installed on the outer side of the external thread 4, a slide groove 6 is provided inside the outer side of the threaded sleeve 5, a guide rod 7 is fixedly installed inside the slide groove 6, a slider 8 is slidably installed on the outer side of the guide rod 7, the slider 8 is slidably connected with the slide groove 6, a hole matching with the guide rod 7 is provided inside the slider 8, a first spring 9 is installed on the outer side of the guide rod 7 and on one side of the slider 8, a ferrule 10 is fixedly installed on the top of the slider 8, the ferrule 10 matches with the rotating rod 12, and the ferrule 10 is slidably connected with the threaded sleeve 5, wherein the main functions of the slide groove 6, the guide rod 7, the slider 8, the first spring 9 and the ferrule 10 are to facilitate the rotation of the rotating rod 12 and the sliding rod 14 to remove the external sealing silicon carbide ring 18 when replacing the external sealing silicon carbide ring 18, so that the replacement of the liquid of the external sealing silicon carbide ring 18 is convenient and quick.
[0019] A rotating groove 11 is provided inside one side of the threaded sleeve 5, and a rotating rod 12 is rotatably installed inside the rotating groove 11. A hole cooperating with the sliding rod 14 is provided inside one side of the rotating rod 12. A buffer groove 13 is provided inside the rotating rod 12, and the sliding rod 14 is slidably installed inside the buffer groove 13. A second spring 15 is installed inside the buffer groove 13. A slide plate 16 is installed inside the buffer groove 13 at one end of the sliding rod 14 extending to the inside of the buffer groove 13, and a retaining ring 17 is fixedly installed on the bottom of the sliding rod 14. An external sealing silicon carbide ring 18 is sleeved on the outside of the main shaft 1 and located in the middle of the dynamic ring 2 and the static ring 3. A groove 19 is provided inside the outer side of the external sealing silicon carbide ring 18, and the retaining ring 17 cooperates with the groove 19.
[0020] A sealing ring 20 is fixedly mounted on the top of the stationary ring 3 , and an outer sealing silicon carbide ring 18 cooperates with the sealing ring 20 .
[0021] In summary, when the sealing device is used, when the external sealing silicon carbide ring 18 needs to be installed, first, the external sealing silicon carbide ring 18 is sleeved on the outside of the main shaft 1, and then the clamping sleeve 10 is pulled to move it to the inner side of the slide groove 6 through the slider 8, and the rotating rod 12 can be rotated to turn up the slide rod 14 and the clamping ring 17, and then the threaded sleeve 5 is rotated to make it approach the external sealing silicon carbide ring 18 through the thread, and then the slide rod 14 is reversed to make the clamping ring 17 fit into the groove 19 to fix the external sealing silicon carbide ring 18 on one side of the stationary ring 3, and the installation is convenient and quick.
[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A sealing device, comprising a main shaft (1), characterized in that: A moving ring (2) is fixedly mounted on the outer side of the main shaft (1), a stationary ring (3) is rotatably mounted on the outer side of the main shaft (1), an external thread (4) is provided on the outer side of the moving ring (2), a threaded sleeve (5) is threadedly mounted on the outer side of the external thread (4), a slide groove (6) is provided inside the outer side of the threaded sleeve (5), a guide rod (7) is fixedly mounted inside the slide groove (6), a slider (8) is slidably mounted on the outer side of the guide rod (7), a first spring (9) is mounted on the outer side of the guide rod (7) and on one side of the slider (8), a clamping sleeve (10) is fixedly mounted on the top of the slider (8), a rotating groove (11) is provided inside one side of the threaded sleeve (5), and the rotating groove (11) is provided inside the inner side of the rotating groove (11). 1), a rotating rod (12) is rotatably installed inside the rotating rod (12), a buffer groove (13) is provided inside the rotating rod (12), a sliding rod (14) is slidably installed inside the buffer groove (13), a second spring (15) is installed inside the buffer groove (13), one end of the sliding rod (14) extends to the inside of the buffer groove (13) and a sliding plate (16) is installed, a retaining ring (17) is fixedly installed at the bottom of the sliding rod (14), an outer side of the main shaft (1) and located in the middle of the moving ring (2) and the stationary ring (3) is sleeved with an external sealing silicon carbide ring (18), a groove (19) is provided inside the outer side of the external sealing silicon carbide ring (18), and the retaining ring (17) cooperates with the groove (19).
2. A sealing device according to claim 1, characterized in that: A sealing ring (20) is fixedly mounted on the top of the stationary ring (3), and the outer sealing silicon carbide ring (18) cooperates with the sealing ring (20).
3. A sealing device according to claim 1, characterized in that: The slide block (8) is slidably connected to the slide groove (6), and a hole matching with the guide rod (7) is provided inside the slide block (8).
4. A sealing device according to claim 1, characterized in that: The clamping sleeve (10) is slidably connected to the threaded sleeve (5).
5. A sealing device according to claim 1, characterized in that: The clamping sleeve (10) cooperates with the rotating rod (12).
6. A sealing device according to claim 1, characterized in that: A hole matching with the slide rod (14) is provided inside one side of the rotating rod (12).