High-pressure double-mechanical-seal structure
By adopting structures such as dynamic ring seat, static seal ring and bearing outer skeleton oil seal in the high-pressure dual mechanical seal structure, the problem of insufficient protection of bearings in vibrating environments is solved, and higher support and load capacity and sealing performance are achieved.
Patent Information
- Application Number
- CN202420046640.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-09
AI Technical Summary
The existing high-pressure and high-speed mechanical seal structures have insufficient protection of bearings in vibrating environments, resulting in easy damage to the structure.
The angular contact needle roller bearing and skeleton oil seal and skeleton oil seal protection mechanism is used in conjunction with the bearing outer skeleton oil seal, bearing protection skeleton oil seal, stalon spring, etc., to form an angular contact needle roller bearing and skeleton oil seal protection mechanism. Enhance the bearing support and load capacity to prevent leakage.
It effectively improves the sealing state protection of the device in a vibrating environment, prevents bearing damage, enhances the support and load capacity of the bearing, and ensures sealing performance.
Smart Images
Figure CN222141972U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical seals, in particular to a high-pressure double mechanical seal structure. Background Art
[0002] Mechanical seals are a mechanically realized sealing structure, usually used to prevent fluid (liquid or gas) leakage in mechanical equipment. Compared with other types of seals, mechanical seals have higher sealing performance and are suitable for high temperature, high pressure, high speed and corrosive environment. Mechanical seals are widely used in rotating equipment such as pumps, compressors, agitators, centrifuges, etc. Their use in the industrial field helps to improve the efficiency of equipment, reduce energy consumption, and ensure that the equipment runs for a long time without leakage.
[0003] During use, some existing technologies, in high pressure, high speed or vibration environments, involve the overall arrangement, insufficient reinforcement of the seals, insufficient protection of the bearings, and insufficient vibration absorption capacity of the bearings, which makes the structure easy to be damaged during use. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a high-pressure double mechanical seal structure, aiming to improve the problem that the bearings in some prior arts have insufficient vibration absorption capacity during use, resulting in the structure being easily damaged during use.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A high-pressure double mechanical seal structure, comprising a rotor, wherein the outside of the rotor is fixedly connected to a bearing chamber, the outside of the rotor is fixedly connected to a leakage chamber, the outside of the rotor is fixedly connected to a housing, the inside of the rotor is fixedly connected to a bearing seal wear-resistant sleeve, the inside of the rotor is fixedly connected to a stationary ring seat body, the inside of the rotor is fixedly connected to a dynamic ring seat body, the outside of the dynamic ring seat body is fixedly connected to a dynamic ring reinforcement sleeve, the inner wall of the stationary ring seat body is fixedly connected to a sealing assembly, the inside of the dynamic ring seat body is fixedly connected to a dynamic seal ring auxiliary O-ring, the inside of the sealing assembly is fixedly connected to a static seal auxiliary O-ring, and the outside of the stationary ring seat body is rotatably connected to a stationary ring seat O-ring;
[0007] Furthermore, the outside of the rotor is fixedly connected to a bearing outer skeleton oil seal, the outside right side of the rotor is fixedly connected to a bearing protection skeleton oil seal, the inner wall of the bearing chamber is fixedly connected to a bearing support sleeve, the inner wall of the sealing assembly is fixedly connected to a stationary ring spring, the inner wall of the bearing chamber is fixedly connected to a bearing compensation spring, the outer side of the stationary ring seat body is fixedly connected to a stationary ring seat anti-rotation pin, and the inside of the stationary ring seat body is rotatably connected to a stationary sealing ring anti-rotation pin.
[0008] Furthermore, the sealing assembly includes a static sealing ring body and a dynamic sealing ring body, the exterior of the static sealing ring body is fixedly connected to the exterior of the rotor, and one side of the exterior of the dynamic sealing ring body is fixedly connected to the exterior right side of the static sealing ring body.
[0009] Furthermore, a dynamic sealing ring stop pin is fixedly connected to an outer side of the dynamic ring seat body, a wear-resistant sleeve stop pin is threadedly connected to an outer side of the rotor, and a dynamic ring seat auxiliary O-ring is fixedly connected to the bottom of the dynamic ring seat body.
[0010] Furthermore, the external thread of the rotor is connected to a dynamic ring seat bolt, and the external side of the bearing chamber is rotatably connected to a bearing body.
[0011] Furthermore, the stationary ring spring is arranged inside the leakage cavity, and the outside of the bearing sealing wear-resistant sleeve is fixedly connected to the inside of the bearing protection skeleton oil seal.
[0012] Further, the outer portion of the bearing body is rotatably connected to the inner portion of the bearing chamber.
[0013] The utility model has the following beneficial effects:
[0014] 1. In the utility model, with the coordinated use of structures such as the dynamic ring seat, the dynamic ring reinforcement sleeve, the static sealing ring, and the dynamic sealing ring, the device can use angular contact needle roller bearings during use, which have higher support and load capacity, and can effectively protect the sealing state under a vibration environment under the action of the bearing compensation spring.
[0015] 2. In the utility model, with the coordinated use of the bearing outer skeleton oil seal, the bearing protection skeleton oil seal, the bearing bearing sleeve, the static ring spring and other structures, the skeleton oil seal can be used to protect the bearing and the sealing cavity during the use of the device to prevent leakage from damaging the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a cross-sectional view of the bearing chamber structure of a high-pressure double mechanical seal structure proposed by the utility model.
[0017] Legend:
[0018] 1. Rotor; 2. Bearing chamber; 3. Leakage chamber; 4. Housing; 5. Bearing seal wear-resistant sleeve; 6. Stationary ring seat body; 7. Dynamic ring seat body; 8. Dynamic ring reinforcement sleeve; 9. Stationary seal ring body; 10. Dynamic seal ring body; 11. Dynamic seal ring auxiliary O-ring; 12. Static seal auxiliary O-ring; 13. Stationary ring seat O-ring; 14. Bearing outer skeleton oil seal; 15. Bearing protection skeleton oil seal; 16. Bearing bearing sleeve; 17. Stationary ring spring; 18. Bearing compensation spring; 19. Stationary ring seat anti-rotation nail; 20. Static seal ring anti-rotation pin; 21. Dynamic seal ring anti-rotation pin; 22. Anti-rotation nail of wear-resistant sleeve; 23. Auxiliary O-ring of dynamic ring seat; 24. Dynamic ring seat bolt; 25. Bearing body. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] Reference Figure 1 The utility model provides an embodiment: a high-pressure double mechanical seal structure, including a rotor 1, a bearing chamber 2 is fixedly connected to the outside of the rotor 1, a leakage chamber 3 is fixedly connected to the outside of the rotor 1, a housing 4 is fixedly connected to the outside of the rotor 1, a bearing seal wear-resistant sleeve 5 is fixedly connected to the inside of the rotor 1, a stationary ring seat body 6 is fixedly connected to the inside of the rotor 1, a dynamic ring seat body 7 is fixedly connected to the inside of the rotor 1, a dynamic ring reinforcement sleeve 8 is fixedly connected to the outer side of the dynamic ring seat body 7, and a sealing component is fixedly connected to the inner wall of the stationary ring seat body 6, The sealing assembly includes a static sealing ring body 9 and a dynamic sealing ring body 10. The dynamic sealing ring body 10 and the dynamic ring reinforcement sleeve 8 cooperate to form a dynamic sealing ring structure. The exterior of the static sealing ring body 9 is fixedly connected to the exterior of the rotor 1, and the exterior side of the dynamic sealing ring body 10 is fixedly connected to the exterior right side of the static sealing ring body 9. The interior of the dynamic ring seat body 7 is fixedly connected with a dynamic sealing ring auxiliary O-ring 11, the interior of the sealing assembly is fixedly connected with a static sealing auxiliary O-ring 12, and the exterior of the static ring seat body 6 is rotatably connected with a static ring seat O-ring 13.
[0021] like Figure 1As shown: the outside of the rotor 1 is fixedly connected with a bearing outer skeleton oil seal 14, the right side of the outside of the rotor 1 is fixedly connected with a bearing protection skeleton oil seal 15, the bearing outer skeleton oil seal 14 and the bearing protection skeleton oil seal 15 are respectively attached to the rotor 1 and the bearing sealing wear-resistant sleeve 5 to protect the bearing, the inner wall of the bearing chamber 2 is fixedly connected with a bearing bearing sleeve 16, and the inner wall of the sealing assembly is fixedly connected with a static ring spring 17. The static ring spring 17 acts on the static sealing ring body 9 through the static ring seat as a compensation part, so that the static sealing ring body 9 and the dynamic sealing ring body 10 are closely attached to each other to form an end face seal. The spring 17 is arranged inside the leakage chamber 3, the outside of the bearing sealing wear-resistant sleeve 5 is fixedly connected to the inside of the bearing protection skeleton oil seal 15, the inner wall of the bearing chamber 2 is fixedly connected with a bearing compensation spring 18, and the outer side of the stationary ring seat body 6 is fixedly connected with a stationary ring seat stop pin 19. The static seal as a whole forms a seal with the leakage chamber 3 through the stationary ring seat O-ring 13 and the stationary ring seat stop pin 19. The internal rotation of the stationary ring seat body 6 is connected with a static sealing ring stop pin 20. The static sealing ring body 9 forms a static seal as a whole with the stationary ring seat body 6 through the static seal auxiliary O-ring 12 and the static sealing ring stop pin 20.
[0022] like Figure 1 As shown: a dynamic sealing ring stop pin 21 is fixedly connected to the outer side of the dynamic ring seat body 7, and a dynamic seal as a whole is formed with the dynamic sealing ring auxiliary O-ring 11, the dynamic sealing ring stop pin 21 and the dynamic ring seat body 7; the external thread of the rotor 1 is connected with a wear-resistant sleeve stop pin 22; the bottom of the dynamic ring seat body 7 is fixedly connected with a dynamic ring seat auxiliary O-ring 23; the external thread of the rotor 1 is connected with a dynamic ring seat bolt 24; the dynamic seal as a whole is sealed and transmitted with the rotor 1 through the dynamic ring seat auxiliary O-ring 23 and the dynamic ring seat bolt 24; a bearing body 25 is rotatably connected to the outer side of the bearing chamber 2; the outer side of the bearing body 25 is rotatably connected to the inside of the bearing chamber 2; the bearing compensation spring 18 acts on the bearing body 25 through the bearing bearing sleeve 16, and the bearing body 25 acts on the rotor 1 through the bearing sealing wear-resistant sleeve 5, so that the bearing has a certain preload force to ensure the stability of the bearing operation.
[0023] Compared with some existing technologies, the above content enables the device to use angular contact needle bearings during use, which have higher support and load capacity. Under the action of the bearing compensation spring 18, it can effectively protect the sealing state under a vibration environment. There is a skeleton oil seal between the bearing body 25 and the sealing cavity to prevent leakage from damaging the bearing.
[0024] Working principle: The dynamic seal ring body 10 and the dynamic ring reinforcement sleeve 8 form a dynamic seal ring structure by matching, and the dynamic seal ring auxiliary O-ring 11 and the dynamic seal ring stop pin 21 form a dynamic seal as a whole with the dynamic ring seat body 7. The dynamic seal as a whole is sealed and transmitted with the rotor 1 through the dynamic ring seat auxiliary O-ring 23 and the dynamic ring seat bolt 24. The static seal ring body 9 forms a static seal as a whole with the static ring seat body 6 through the static seal auxiliary O-ring 12 and the static seal ring stop pin 20. The static seal as a whole forms a seal with the leakage chamber 3 through the static ring seat O-ring 13 and the static ring seat anti-rotation pin 19. The static ring spring 17 acts on the static seal ring body 9 through the static ring seat as a compensation part, so that the static seal ring body 9 and the dynamic seal ring body 10 are closely fitted to form an end face seal. The bearing compensation spring 18 acts on the bearing body 25 through the bearing bearing sleeve 16, and the bearing body 25 acts on the rotor 1 through the bearing sealing wear-resistant sleeve 5, so that the bearing body 25 has a certain preload force to ensure the stability of the operation of the bearing body 25. The bearing outer skeleton oil seal 14 and the bearing protection skeleton oil seal 15 are respectively fitted on the rotor 1 and the bearing sealing wear-resistant sleeve 5 to protect the bearing body 25. The bearing chamber 2, the leakage chamber 3, and the housing 4 together constitute the stator structure and the rotor 1 realizes a rotating structure through the bearing body 25.
[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high-pressure dual mechanical seal structure, comprising a rotor (1), characterized in that: The outside of the rotor (1) is fixedly connected to a bearing chamber (2), the outside of the rotor (1) is fixedly connected to a leakage chamber (3), the outside of the rotor (1) is fixedly connected to a housing (4), the inside of the rotor (1) is fixedly connected to a bearing seal wear-resistant sleeve (5), the inside of the rotor (1) is fixedly connected to a stationary ring seat body (6), the inside of the rotor (1) is fixedly connected to a dynamic ring seat body (7), the outside of the dynamic ring seat body (7) is fixedly connected to a dynamic ring reinforcement sleeve (8), the inner wall of the stationary ring seat body (6) is fixedly connected to a sealing assembly, the inside of the dynamic ring seat body (7) is fixedly connected to a dynamic seal ring auxiliary O-ring (11), the inside of the sealing assembly is fixedly connected to a static seal auxiliary O-ring (12), and the outside of the stationary ring seat body (6) is rotatably connected to a stationary ring seat O-ring (13).
2. A high pressure dual mechanical seal structure according to claim 1, characterized in that: The outside of the rotor (1) is fixedly connected to a bearing outer skeleton oil seal (14), the right side of the outside of the rotor (1) is fixedly connected to a bearing protection skeleton oil seal (15), the inner wall of the bearing chamber (2) is fixedly connected to a bearing support sleeve (16), the inner wall of the sealing assembly is fixedly connected to a stationary ring spring (17), the inner wall of the bearing chamber (2) is fixedly connected to a bearing compensation spring (18), the outer side of the stationary ring seat body (6) is fixedly connected to a stationary ring seat anti-rotation pin (19), and the inside of the stationary ring seat body (6) is rotatably connected to a stationary sealing ring anti-rotation pin (20).
3. A high pressure dual mechanical seal structure according to claim 1, characterized in that: The sealing assembly comprises a static sealing ring body (9) and a dynamic sealing ring body (10), wherein the exterior of the static sealing ring body (9) is fixedly connected to the exterior of the rotor (1), and the exterior side of the dynamic sealing ring body (10) is fixedly connected to the exterior right side of the static sealing ring body (9).
4. A high pressure dual mechanical seal structure according to claim 1, characterized in that: A dynamic sealing ring stop pin (21) is fixedly connected to one side of the exterior of the dynamic ring seat body (7), a wear-resistant sleeve stop pin (22) is threadedly connected to the exterior of the rotor (1), and a dynamic ring seat auxiliary O-ring (23) is fixedly connected to the bottom of the dynamic ring seat body (7).
5. A high pressure dual mechanical seal structure according to claim 1, characterized in that: The external thread of the rotor (1) is connected to a dynamic ring seat bolt (24), and the external side of the bearing chamber (2) is rotatably connected to a bearing body (25).
6. A high pressure dual mechanical seal structure according to claim 2, characterized in that: The stationary ring spring (17) is arranged inside the leakage chamber (3), and the outside of the bearing sealing wear-resistant sleeve (5) is fixedly connected to the inside of the bearing protection skeleton oil seal (15).
7. A high pressure dual mechanical seal structure according to claim 5, characterized in that: The outside of the bearing body (25) is rotatably connected to the inside of the bearing chamber (2).