Sealing element and special-shaped inflation system for high-speed shaft
By introducing a liquid reservoir and a V-shaped spring structure into the seal, the problem of friction and wear of the O-ring under high-speed rotation is solved, achieving lubrication and flexible contact, thus improving the sealing effect and service life.
Patent Information
- Application Number
- CN202423319403.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing O-rings are prone to friction and wear under high-speed rotation, leading to leakage and failure to provide an effective seal.
A sealing element was designed, including a jacket body, a liquid storage chamber, an O-ring seal, and a V-spring. The liquid storage chamber inside the jacket body is used to store lubricating oil. An O-ring seal is embedded on the outside, and a sleeve and a sealing ring are provided on the inside. The sealing ring is in flexible contact with the high-speed shaft. The deformation compression is maintained by the V-spring, which reduces friction and increases static friction.
It effectively reduces the friction between the high-speed shaft and the jacket body, enhances the sealing effect, extends the service life, and ensures the sealing performance during the inflation process.
Smart Images
Figure CN223594967U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of sealing devices, in particular to a sealing piece and a special-shaped inflation system for a high-speed shaft. BACKGROUND
[0002] The sealing ring is generally composed of a polymer material, and the selection of the sealing ring material is of great significance to the sealing performance and service life of the sealing ring. The performance of the material directly affects the use performance of the sealing ring. The sealing ring has proper mechanical strength, including expansion strength, elongation and tear resistance, stable performance, is not easy to swell in the medium, has small thermal shrinkage effect (Joule effect), does not corrode the contact surface and the like.
[0003] When the sealing ring needs to be applied to a scene of high-speed rotation and has an inflation system, at present, an O-shaped sealing ring is generally used for sealing. The relative rotation between the O-shaped sealing ring and the sealing ring is easy to cause friction and wear of the sealing ring, and thus causes leakage, and therefore needs to be improved. CONTENT OF THE UTILITY MODEL
[0004] In order to make the sealing ring suitable for high-speed rotation, avoid relative rotation with the high-speed shaft, and ensure the sealing effect, the application provides a sealing piece.
[0005] In a first aspect, the application provides a sealing piece adopting the following technical scheme:
[0006] The sealing piece comprises a jacket body, the jacket body is hollow and has a cavity, the cavity is used for passing the high-speed shaft, a plurality of convex rings are arranged on the outer side wall of the jacket body, the convex rings are distributed along the height direction of the jacket body, a plurality of grooves are formed, and part of the grooves are used for embedding the O-shaped sealing ring; a sleeve is arranged on the inner side wall of the jacket body, the high-speed shaft is in extrusion contact with the sleeve; the sleeve is provided with a liquid storage cavity, and the liquid storage cavity is used for storing lubricating liquid.
[0007] By adopting the above technical scheme, the liquid storage cavity is used for storing lubricating oil, the lubricating oil can play a lubricating role on the high-speed shaft, so as to reduce the friction between the high-speed shaft and the jacket body. Meanwhile, the plurality of O-shaped sealing rings embedded on the outer side wall of the jacket body can increase the static friction between the jacket body and other components, so as to effectively reduce the rotation of the jacket body and the high-speed shaft together.
[0008] Preferably, the two ends of the jacket body are provided with sealing rings, the sealing rings are in elastic contact with the high-speed shaft, mounting grooves are arranged on the two sealing rings, V-shaped springs are arranged in the mounting grooves, the clamping openings of the V-shaped springs face the grooves of the mounting grooves, and the sealing rings and the sleeve form an air cavity.
[0009] By adopting the technical scheme, the sealing ring and the high-speed shaft are in contact, and when the high-speed shaft and the jacket body rotate relative to each other, flexible contact of the sealing ring and the high-speed shaft can be realized due to the V-shaped spring, and the sealing ring can maintain a certain deformation compression amount under the action of the high-speed shaft, thereby ensuring the sealing effect.
[0010] Preferably, the jacket body is provided with a gas hole penetrating through the upper portion, and the gas hole is in communication with the gas cavity.
[0011] By adopting the technical scheme, the gas can flow into the gas cavity from the high-speed shaft, and then be filled into the required position through the gas hole.
[0012] Preferably, the jacket body is made of polytetrafluoroethylene material.
[0013] By adopting the technical scheme, the polytetrafluoroethylene material has good wear resistance, and the service life of the jacket body can be prolonged.
[0014] In the second aspect, the application further provides a special-shaped air charging system for a high-speed shaft, which comprises the sealing member, the high-speed shaft body and the valve body having all the structures described above, the valve body is provided with a recess, the jacket body is arranged in the recess, the high-speed shaft body penetrates through the cavity of the jacket body, and the outer surface of the high-speed shaft body is in contact with the sleeve and the two sealing rings.
[0015] Preferably, the special-shaped air charging system further comprises a gland, which is arranged on the valve body and used for pressing on one end of the jacket body.
[0016] By adopting the technical scheme, the gland presses the jacket body on the valve body, thereby improving the stability of the installation of the jacket body.
[0017] Preferably, the valve body is made of carbon steel or stainless steel material.
[0018] By adopting the technical scheme, the carbon steel or stainless steel material has good corrosion resistance.
[0019] Preferably, the high-speed shaft body is provided with a first gas flow channel, the gas outlet of the first gas flow channel is in communication with the gas cavity, the valve body is provided with a second gas flow channel penetrating through the valve body, and the gas inlet of the second gas flow channel is in communication with the gas cavity.
[0020] By adopting the technical scheme, the gas enters the gas cavity along the first gas flow channel, and the gas in the gas cavity enters the second gas flow channel through the gas hole, so that the gas is sealed by the jacket body in the whole gas passing process, thereby ensuring the sealing effect of the air charging.
[0021] In summary, the application has at least one of the following beneficial technical effects:
[0022] (1) By setting the liquid storage cavity on the inner wall of the jacket body, the liquid storage cavity is used to store lubricating oil, which can play a lubricating role on the high-speed shaft, thereby reducing the friction between the high-speed shaft and the jacket body. At the same time, the O-shaped sealing ring embedded on the outer wall of the jacket body can increase the static friction between the jacket body and other components, thereby effectively reducing the rotation of the jacket body and the high-speed shaft.
[0023] (2) By setting the sealing ring and the V-shaped spring, the flexible contact between the sealing ring and the high-speed shaft can be realized by the presence of the V-shaped spring. The sealing ring can maintain a certain amount of deformation compression under the action of the high-speed shaft, thereby ensuring the sealing effect. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is a structure diagram of a sealing member in the embodiment of the present application;
[0025] Figure 2 is a partial structure diagram of a sealing member in the embodiment of the present application;
[0026] Figure 3 is a structure diagram of a special-shaped inflation system in the embodiment of the present application.
[0027] Reference signs: 1, jacket body; 2, cavity; 3, convex ring; 4, groove; 5, sleeve; 6, liquid storage cavity; 7, sealing ring; 8, mounting groove; 9, V-shaped spring; 10, air cavity; 11, air hole; 12, high-speed shaft body; 13, valve body; 14, gland; 15, first air flow channel; 16, second air flow channel; 17, sink. DETAILED DESCRIPTION
[0028] The technical solutions of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The present application can be embodied in various forms, and is not limited to the embodiments described here.
[0029] In the description of the present application, the expressions such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics expressed in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics expressed can be combined in any one or more embodiments or examples in a suitable manner.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
[0031] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection; can also be detachable connection; or integrated; or mechanical connection. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0032] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. Those skilled in the art can combine and combine the different embodiments or examples expressed in the present application and the features of different embodiments or examples without conflict.
[0033] The present application discloses a sealing element. Referring to Figure 1 and Figure 2 , the sealing element comprises a jacket body 1, which is cylindrical and has a circular cross-section. The jacket body 1 is hollow and has a cavity 2 for the high-speed shaft to pass through. In this embodiment, the jacket body 1 is made of polytetrafluoroethylene or other wear-resistant materials. A plurality of convex rings 3 are integrally connected to the outer side wall of the jacket body 1, and the convex rings 3 are spaced apart along the height direction of the jacket body 1, and a plurality of grooves 4 are formed, and part of the grooves 4 are used for embedding O-rings.
[0034] A sleeve 5 is integrally connected to the inner side wall of the jacket body 1, and the sleeve 5 is located in the middle of the jacket body 1, and the high-speed shaft is in extrusion contact with the sleeve 5. The sleeve 5 is provided with a liquid storage cavity 6 for storing lubricating oil. The two ends of the jacket body 1 are integrally connected with sealing rings 7, and the sleeve 5 is located between the two sealing rings 7, and the sealing rings 7 are in elastic contact with the surface of the high-speed shaft. The two sealing rings 7 are provided with mounting grooves 8, and V-shaped springs 9 are mounted in the mounting grooves 8, and the clamping opening of the V-shaped spring 9 faces the groove opening of the mounting groove 8, and the air cavity 10 is formed between the two sealing rings 7 and the sleeve 5. As shown, the number of air cavities 10 in this embodiment is two. Among them, the air holes 11 are provided through the jacket body 1, and the air holes 11 are circumferentially distributed and communicate with the air cavities 10.
[0035] The principle of the sealing element is that the jacket body 1 is installed on an external object, the high-speed shaft passes through the cavity 2 of the jacket body 1 and contacts the jacket body 1. When the high-speed shaft rotates, the lubricating oil in the liquid storage cavity 6 can play a lubricating role on the high-speed shaft, thereby reducing the friction between the high-speed shaft and the jacket body 1 and reducing the possibility that the jacket body 1 is driven by the high-speed shaft. The existence of the V-shaped spring 9 can realize flexible contact of the sealing ring 7 and the high-speed shaft, and the two sealing rings 7 can always maintain a certain amount of deformation compression under the action of the high-speed shaft, thereby ensuring the sealing effect. At the same time, the O-shaped sealing ring embedded on the outer side wall of the jacket body 1 can increase the static friction between the jacket body 1 and other components, thereby effectively reducing the rotation of the jacket body 1 and the high-speed shaft.
[0036] Based on the above embodiment, as shown in Figure 3 The application also provides a special-shaped inflation system for a high-speed shaft, which comprises the sealing element, a high-speed shaft body 12 and a valve body 13.
[0037] The valve body 13 is made of carbon steel or stainless steel, the valve body 13 is provided with a sink 17, the jacket body 1 is installed in the sink 17, the high-speed shaft body 12 passes through the cavity 2 of the jacket body 1, the outer surface of the high-speed shaft body 12 contacts the sleeve 5 and the two sealing rings 7, and the jacket body 1 is used for sealing the high-speed shaft body 12.
[0038] The above are preferred embodiments of the application, and the protection scope of the application is not limited thereto, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.
Claims
1. A sealing element, characterized in that, The device includes a jacket body (1), which is hollow and has a cavity (2) for a high-speed shaft to pass through. Several protruding rings (3) are provided on the outer side wall of the jacket body (1). Each protruding ring (3) is spaced along the height direction of the jacket body (1) and has several grooves (4). Some of the grooves (4) are used for O-rings to be embedded. A sleeve (5) is provided on the inner side wall of the jacket body (1). The high-speed shaft is in contact with the sleeve (5). The sleeve (5) has a liquid storage cavity (6) for storing lubricating fluid.
2. A sealing element according to claim 1, characterized in that, It also includes a V-shaped spring (9), and both ends of the jacket body (1) are provided with sealing rings (7), which are in elastic contact with the high-speed shaft; both sealing rings (7) are provided with mounting grooves (8), and the V-shaped spring (9) is provided in the mounting grooves (8), with the clamp of the V-shaped spring (9) facing the groove opening of the mounting groove (8); an air cavity (10) is formed between the sealing ring (7) and the sleeve (5).
3. A sealing element according to claim 2, characterized in that, The jacket body (1) has an air hole (11) through it, and the air hole (11) is connected to the air cavity (10).
4. A sealing element according to claim 1, characterized in that, The jacket body (1) is made of polytetrafluoroethylene material.
5. A high-speed shaft irregular-shaped air inflation system, characterized in that, Includes a seal as described in any one of claims 2-3, a high-speed shaft body (12), and a valve body (13), wherein a groove (17) is provided on the valve body (13), the jacket body (1) is disposed in the groove (17), the high-speed shaft body (12) passes through the cavity (2) of the jacket body (1), and the outer surface of the high-speed shaft body (12) contacts the sleeve (5) and the two sealing rings (7).
6. A high-speed shaft irregular-shaped air inflation system according to claim 5, characterized in that, It also includes a pressure cap (14), which is disposed on the valve body (13) and is used to press against one end of the jacket body (1).
7. A high-speed shaft irregular-shaped air inflation system according to claim 5, characterized in that, The valve body (13) is made of carbon steel or stainless steel.
8. A high-speed shaft irregular-shaped air inflation system according to claim 5, characterized in that, The high-speed shaft body (12) is provided with a first airflow channel (15), the outlet of the first airflow channel (15) is connected to the air chamber (10), and the valve body (13) is provided with a second airflow channel (16), the inlet of the second airflow channel (16) is connected to the air chamber (10).