CN220302752U - Labyrinth type air sealing device - Google Patents
Labyrinth type air sealing device Download PDFInfo
- Publication number
- CN220302752U CN220302752U CN202321468848.8U CN202321468848U CN220302752U CN 220302752 U CN220302752 U CN 220302752U CN 202321468848 U CN202321468848 U CN 202321468848U CN 220302752 U CN220302752 U CN 220302752U
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- Prior art keywords
- sealing
- labyrinth
- air
- connecting pipe
- utility
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- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001050 lubricating effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a labyrinth type air sealing device, which belongs to the technical field of sealing and comprises a rotating shaft, wherein an oil slinger is sleeved on the rotating shaft, a sealing labyrinth is arranged between the oil slinger and an end cover, an air inlet hole connected with an air source is arranged on the outer wall of the end cover, and the air inlet hole is communicated with the sealing labyrinth. The utility model aims to provide a labyrinth air sealing device which can improve the sealing effect of labyrinth sealing.
Description
Technical Field
The utility model relates to the technical field of sealing, in particular to a labyrinth type air sealing device.
Background
A sealing ring, a shaft seal and other contact type sealing devices are arranged between the rotating shaft of the gear box and the end cover and the like to prevent leakage of lubricating media and the like, and the contact type sealing has the advantages of good sealing performance, but relatively low service life due to abrasion and other reasons; therefore, in the prior art, the sealing between the shaft and the fixed part can be realized by adopting a non-contact sealing mode such as labyrinth sealing, and the non-contact sealing has the advantages of longer service life and the like compared with the contact sealing, but the sealing effect of the non-contact sealing can be further improved compared with the contact sealing.
Disclosure of Invention
The utility model aims to solve the problems and provide a labyrinth seal device which can improve the sealing effect of labyrinth seal.
In order to achieve the above purpose, the technical scheme adopted by the utility model is that the labyrinth air sealing device comprises a rotating shaft, wherein an oil slinger is sleeved on the rotating shaft, a sealing labyrinth is arranged between the oil slinger and an end cover, an air inlet hole connected with an air source is arranged on the outer wall of the end cover, the air inlet hole is communicated with the sealing labyrinth, and air enters the sealing labyrinth from the air inlet hole so as to improve the sealing effect.
Further, the tail ends of the air inlet holes are respectively communicated with the air inlet ends of the radial connecting pipe and the axial connecting pipe, the air outlet ends of the radial connecting pipe and the axial connecting pipe are respectively communicated with the sealing labyrinth, and air enters the sealing labyrinth from the radial connecting pipe and the axial connecting pipe respectively so as to isolate most of lubricating medium at the front end of the sealing labyrinth, and the lubricating medium entering the sealing labyrinth can also return to the box body under the action of the air.
Furthermore, an oil storage cavity is arranged between the radial connecting pipe air outlet end and the axial connecting pipe air outlet end of the sealing labyrinth to ensure that lubricating medium cannot overflow from the sealing labyrinth.
The utility model has the beneficial effects that: the utility model has simple structure, and the air inlet is utilized to guide the air into the sealing labyrinth, so that the air pressure in the sealing labyrinth is increased, most of the lubricating medium cannot enter the sealing labyrinth, and the lubricating medium entering the sealing labyrinth can also return to the box body under the action of the air pressure, thereby improving the sealing effect of the labyrinth sealing.
Drawings
Fig. 1 is a schematic diagram of a front view structure of the present utility model.
The text labels in the figures are expressed as: 1. a rotation shaft; 2. oil slinger; 3. an end cap; 4. sealing the labyrinth; 5. an air inlet hole; 6. a radial connecting pipe; 7. an axial connecting pipe; 8. an oil storage cavity; 9. a box body.
Description of the embodiments
In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.
Embodiment 1, as shown in fig. 1, the structure of the embodiment is a labyrinth type air sealing device, which comprises a rotating shaft 1 arranged in a box body 9, wherein an oil slinger 2 is sleeved on the rotating shaft 1, a sealing labyrinth 4 is arranged between the oil slinger 2 and an end cover 3, the end cover 3 is fixed on the box body 9, an air inlet hole 5 connected with an air source is arranged on the outer wall of the end cover 3, and the air inlet hole 5 is communicated with the sealing labyrinth 4; in this embodiment, the air inlet hole 5 is disposed along the radial direction of the rotation shaft 1, the air inlet of the air inlet hole 5 is located on the outer side wall of the end cover 3, a radial connection pipe 6 and an axial connection pipe 7 are respectively disposed in the end cover 3 along the radial direction and the axial direction of the rotation shaft 1, the air inlet ends of the radial connection pipe 6 and the axial connection pipe 7 are communicated with the air outlet of the air inlet hole 5, the air outlet ends of the radial connection pipe 6 and the axial connection pipe 7 are respectively communicated with the seal labyrinth 4, wherein the front end of the seal labyrinth 4 is the inlet side of the lubrication medium, that is, the far end of the end cover 3, and the axial connection pipe 7 is closer to the front end of the seal labyrinth 4 than the radial connection pipe 6; the sealing labyrinth 4 is provided with an oil storage cavity 8 between the air outlet end of the radial connecting pipe 6 and the air outlet end of the axial connecting pipe 7, and the position of the oil storage cavity 8 is preferably arranged between annular sealing teeth of the sealing labyrinth 4 and the radial connecting pipe 6.
The specific working process comprises the following steps: the air inlet of the air inlet hole 5 is connected with an air source, under the action of an air pump and the like, air enters the end cover 3 along the air inlet hole 5, the air entering the end cover 3 respectively enters the radial connecting pipe 6 and the axial connecting pipe 7, the air entering the axial connecting pipe 7 is blown out from the front end of the sealing labyrinth 4 so as to isolate most of liquid lubricating medium from the sealing labyrinth 4, the liquid lubricating medium is oil, and part of the liquid lubricating medium entering the sealing labyrinth 4 also returns into the box 9 along the sealing labyrinth 4 under the action of the air blown out from the radial connecting pipe 6, and the sealing effect of the labyrinth sealing is improved by adjusting the air inflow entering the air inlet hole 5.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that, due to the limited text expressions, there is virtually no limit to the specific structure, and that, for a person skilled in the art, modifications, alterations and combinations of these features may be made in a suitable manner without departing from the principles of the present utility model; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.
Claims (2)
1. The utility model provides a labyrinth seal device, it includes rotation axis (1), the cover is equipped with oil slinger (2) on rotation axis (1), be provided with sealed maze (4) between oil slinger (2) and end cover (3), a serial communication port, be provided with inlet port (5) of being connected with the air supply on end cover (3) outer wall, the end of inlet port (5) respectively with radial connecting pipe (6) and axial connecting pipe (7) inlet end intercommunication, radial connecting pipe (6) and axial connecting pipe (7) give vent to anger the end respectively with sealed maze (4) intercommunication.
2. Labyrinth seal according to claim 1, characterized in that the sealing labyrinth (4) is provided with an oil reservoir (8) between the outlet end of the radial connection pipe (6) and the outlet end of the axial connection pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321468848.8U CN220302752U (en) | 2023-06-09 | 2023-06-09 | Labyrinth type air sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321468848.8U CN220302752U (en) | 2023-06-09 | 2023-06-09 | Labyrinth type air sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302752U true CN220302752U (en) | 2024-01-05 |
Family
ID=89371576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321468848.8U Active CN220302752U (en) | 2023-06-09 | 2023-06-09 | Labyrinth type air sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302752U (en) |
-
2023
- 2023-06-09 CN CN202321468848.8U patent/CN220302752U/en active Active
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