CN210135246U - Shaft seal structure - Google Patents
Shaft seal structure Download PDFInfo
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- CN210135246U CN210135246U CN201920424398.XU CN201920424398U CN210135246U CN 210135246 U CN210135246 U CN 210135246U CN 201920424398 U CN201920424398 U CN 201920424398U CN 210135246 U CN210135246 U CN 210135246U
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- labyrinth
- ring
- oil
- transmission shaft
- shaft
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Abstract
The utility model discloses a shaft seal structure, include: the oil slinger comprises a transmission shaft, a labyrinth movable ring, an oil slinger, a labyrinth static ring, an oil seal and a sealing ring for sealing between the transmission shaft and the labyrinth movable ring; the labyrinth movable ring and the oil slinger are sleeved on the transmission shaft; the transmission shaft drives the labyrinth movable ring and the oil slinger to rotate; the labyrinth static ring is provided with a shaft hole for the transmission shaft to pass through; the transmission shaft penetrates through the shaft hole; the labyrinth static ring and the labyrinth moving ring form a labyrinth structure; the labyrinth static ring is provided with a lubricating flow passage for injecting lubricating grease into the sealing structure; the sealing ring is sleeved to the periphery of the transmission shaft and is arranged between the transmission shaft and the labyrinth movable ring; the oil seal is arranged between the oil slinger and the labyrinth static ring. The utility model discloses an useful part lies in, and the axle seal structure sealing reliability is high, and is effectual.
Description
Technical Field
The utility model relates to a shaft seal structure, especially a high-speed shaft seal structure.
Background
The traditional high-speed shaft sealing structure of the traditional industrial low-speed heavy-duty speed reducer is generally an oil seal or a mechanical seal. The main functions of the oil seal are to prevent leakage of lubricating oil, entry of external dust and pollution of the lubricating oil. The sealing structure has the advantages of good sealing effect and easy damage caused by external reasons, and is particularly serious in large-particle dust environments of steel plants, cement plants and the like. The main function of the mechanical seal is to ensure oil return through an open large space and prevent leakage of lubricating oil. The advantage is that there is not the problem of revealing that the oil seal damaged produced, the shortcoming is because great open space, dust particle easily gets into in the lubricating oil and produces the pollution. In the conventional mechanical seal structure, a clearance between the input seal part and the high-speed shaft part is not considered, and leakage of lubricating oil is likely to occur therein, and disassembly is difficult if interference connection is made.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a shaft seal structure, which has better sealing effect.
In order to achieve the above object, the utility model adopts the following scheme:
a shaft seal structure comprising: the oil slinger comprises a transmission shaft, a labyrinth movable ring, an oil slinger, a labyrinth static ring, an oil seal and a sealing ring for sealing between the transmission shaft and the labyrinth movable ring; the labyrinth movable ring and the oil slinger are sleeved on the transmission shaft; the transmission shaft drives the labyrinth movable ring and the oil slinger to rotate; the labyrinth static ring is provided with a shaft hole for the transmission shaft to pass through; the transmission shaft penetrates through the shaft hole; the labyrinth static ring and the labyrinth moving ring form a labyrinth structure; the labyrinth static ring is provided with a lubricating flow passage for injecting lubricating grease into the sealing structure; the sealing ring is sleeved to the periphery of the transmission shaft and is arranged between the transmission shaft and the labyrinth movable ring; the oil seal is arranged between the oil slinger and the labyrinth static ring.
Further, the shaft seal structure further includes: an oil seal pressing plate for fixing the oil seal to the labyrinth stationary ring; the oil seal pressing plate is fixed to the labyrinth stationary ring.
Further, the oil seal pressing plate is fixed to the labyrinth stationary ring by bolts.
Further, an oil seal pressing plate is mounted to the inner side surface of the labyrinth stationary ring; the labyrinth structure sets up in the lateral surface of labyrinth stationary ring.
Further, the shaft sealing structure also comprises a straight-through type pressure injection oil cup used for injecting lubricating grease into the lubricating flow channel; the straight-through pressure injection oil cup is mounted to the labyrinth stationary ring.
Further, the labyrinth movable ring is positioned between the hole wall of the shaft hole and the outer peripheral surface of the transmission shaft.
Further, the sealing ring is an O-shaped rubber sealing ring.
A shaft seal structure comprising: the oil seal comprises a shell, a transmission shaft, a movable ring, an oil slinger, a seal ring for sealing between the transmission shaft and the movable ring and an oil seal for sealing between the oil slinger and the shell; the rotating ring and the oil slinger are sleeved on the transmission shaft; the transmission shaft drives the movable ring and the oil slinger to rotate; the shell is provided with a shaft hole for the transmission shaft to pass through; the whole body formed by the transmission shaft, the movable ring and the oil slinger passes through the shaft hole; the shell and the movable ring form a labyrinth structure; the shell is provided with a lubricating flow passage for injecting lubricating grease into the sealing structure; the labyrinth structure is arranged on the outer side surface of the shell; the sealing ring is sleeved to the periphery of the transmission shaft and arranged between the transmission shaft and the movable ring; the oil seal is arranged between the oil slinger and the shell.
Further, the shaft seal structure further includes: an oil seal pressing plate for fixing the oil seal to the housing; the oil seal pressing plate is fixed to the housing.
Further, an oil seal pressing plate is mounted to the inner side surface of the housing.
The utility model discloses an useful part lies in, and sealing reliability is high, and is effectual.
The labyrinth movable ring is in clearance fit with the transmission shaft and is easy to disassemble, and meanwhile, the seal ring is used for carrying out axial seal to seal a clearance between the labyrinth movable ring and the transmission shaft. Lubricating grease can be injected to the labyrinth position through the straight-through type pressure injection oil cup, so that the labyrinth sealing effect is enhanced, foreign matters are prevented from entering, and the sealing effect is good; the three sealing structures are combined, the advantages are complementary, and the reliability of the high-speed shaft sealing is guaranteed to the maximum extent.
Drawings
Fig. 1 is a schematic view of the shaft seal structure of the present invention.
The oil seal structure comprises a labyrinth static ring 1, an oil seal pressing plate 2, an oil slinger 3, an oil seal 4, a straight-through type pressure injection oil cup 5, a labyrinth moving ring 6, a sealing ring 7 and a transmission shaft 8.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a shaft seal structure includes: the oil seal comprises a static ring, a transmission shaft 8, a moving ring, an oil slinger 3, a seal ring 7 and an oil seal 4.
The rotating ring rotates relative to the stationary ring. A labyrinth structure is formed between the movable ring and the static ring. Thus, the rotating ring may also be referred to as labyrinth rotating ring 6. The stationary ring may also be referred to as labyrinth stationary ring 1. The labyrinth static ring 1 and the labyrinth movable ring 6 form a labyrinth structure.
In one specific embodiment, the stationary ring serves as the housing. The shell and the movable ring form a labyrinth structure. The housing forms a shaft hole through which the transmission shaft 8 passes. Alternatively, the labyrinth stationary ring 1 is formed with a shaft hole through which the drive shaft 8 passes. The transmission shaft 8 passes through the shaft hole. Specifically, the transmission shaft 8, the rotating ring, and the slinger 3 are integrally inserted through the shaft hole.
The rotating ring and the oil slinger 3 are sleeved on the transmission shaft 8. The transmission shaft 8 drives the movable ring to rotate, so that the movable ring rotates relative to the static ring. The transmission shaft drives the oil slinger 3 to rotate.
An oil seal 4 is provided between the oil slinger 3 and the housing. The oil seal 4 is used to seal between the oil slinger 3 and the housing.
As a preferred embodiment, the labyrinth stationary ring 1 is provided with a lubrication flow passage for injecting grease into the seal structure. Alternatively, the housing is provided with a lubrication flow passage for injecting grease into the seal structure. The labyrinth structure is arranged on the outer side surface of the shell.
As a specific embodiment, the shaft seal structure further includes a through-type pressure-filling oil cup 5. A straight-through pressure-fed oil cup 5 is mounted to the labyrinth stationary ring 1. The straight-through type pressure injection oil cup 5 is used for injecting lubricating grease into the lubricating flow channel so as to realize the injection of the lubricating grease into the labyrinth structure. Lubricating grease is injected into the labyrinth structure through the straight-through type pressure injection oil cup 5, the labyrinth type sealing effect is enhanced, foreign matters are prevented from entering, and the sealing effect is good.
The sealing ring 7 is used for sealing between the transmission shaft 8 and the movable ring. The sealing ring 7 is sleeved on the periphery of the transmission shaft 8 and arranged between the transmission shaft 8 and the movable ring. A gap is formed between the transmission shaft 8 and the movable ring, namely the movable ring is in clearance fit with the transmission shaft at 8 positions, and the disassembly is easy. The sealing ring is used for axial sealing and sealing a gap between the transmission shaft 8 and the movable ring.
Through the combination of the three sealing structures, the advantage complementation is realized, and the reliability of the high-speed shaft sealing is ensured to the maximum extent.
As a preferred embodiment, the shaft seal structure further includes: and an oil seal pressing plate 2. The oil seal pressing plate 2 is fixed to the labyrinth stationary ring 1. The oil seal pressing plate 2 is used to fix the oil seal 4 to the labyrinth stationary ring 1.
As an alternative embodiment, an oil seal pressing plate may not be provided, and an oil seal groove may be machined on the labyrinth static ring to perform installation of an oil seal. Namely, an oil seal groove for mounting an oil seal is processed on the hole wall of the shaft hole.
As a specific embodiment, the oil seal pressing plate 2 is fixed to the labyrinth stationary ring 1 by bolts. The oil seal pressing plate 2 is fixed to the housing by bolts. The oil seal pressing plate 2 is mounted to the inner side surface of the housing. The labyrinth structure is arranged on the outer side surface of the labyrinth static ring 1. In a specific embodiment, the labyrinth moving ring 6 is located between the hole wall of the shaft hole and the outer peripheral surface of the transmission shaft 8.
In a specific embodiment, the seal ring 7 is an O-ring rubber seal ring.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (10)
1. A shaft seal structure, comprising: the oil slinger comprises a transmission shaft, a labyrinth moving ring, an oil slinger, a labyrinth static ring, an oil seal and a sealing ring for sealing between the transmission shaft and the labyrinth moving ring; the labyrinth moving ring and the oil slinger are sleeved on the transmission shaft; the transmission shaft drives the labyrinth movable ring and the oil slinger to rotate; the labyrinth static ring is provided with a shaft hole for the transmission shaft to pass through; the transmission shaft penetrates through the shaft hole; the labyrinth static ring and the labyrinth movable ring form a labyrinth structure; the labyrinth static ring is provided with a lubricating flow passage for injecting lubricating grease into the sealing structure; the sealing ring is sleeved to the periphery of the transmission shaft and is arranged between the transmission shaft and the labyrinth movable ring; the oil seal is arranged between the oil slinger and the labyrinth static ring.
2. The shaft seal structure according to claim 1,
the shaft seal structure further includes: an oil seal pressing plate for fixing the oil seal to the labyrinth stationary ring; the oil seal pressing plate is fixed to the labyrinth stationary ring.
3. The shaft seal structure according to claim 2,
the oil seal pressing plate is fixed to the labyrinth stationary ring through bolts.
4. The shaft seal structure according to claim 2,
the oil seal pressing plate is mounted to the inner side face of the labyrinth static ring; the labyrinth structure set up in the lateral surface of labyrinth stationary ring.
5. The shaft seal structure according to claim 1,
the shaft sealing structure also comprises a straight-through type pressure injection oil cup used for injecting lubricating grease into the lubricating flow passage; the straight-through type pressure injection oil cup is mounted to the labyrinth static ring.
6. The shaft seal structure according to claim 1,
the labyrinth movable ring is positioned between the hole wall of the shaft hole and the peripheral surface of the transmission shaft.
7. The shaft seal structure according to claim 1,
the sealing ring is an O-shaped rubber sealing ring.
8. A shaft seal structure, comprising: the oil seal comprises a shell, a transmission shaft, a movable ring, an oil slinger, a sealing ring for sealing between the transmission shaft and the movable ring and an oil seal for sealing between the oil slinger and the shell; the rotating ring and the oil slinger are sleeved on the transmission shaft; the transmission shaft drives the movable ring and the oil slinger to rotate; the shell is provided with a shaft hole for the transmission shaft to pass through; the transmission shaft, the movable ring and the oil slinger integrally penetrate through the shaft hole; the shell and the moving ring form a labyrinth structure; the shell is provided with a lubricating flow passage for injecting lubricating grease into the sealing structure; the labyrinth structure is arranged on the outer side surface of the shell; the sealing ring is sleeved to the periphery of the transmission shaft and arranged between the transmission shaft and the movable ring; the oil seal is arranged between the oil slinger and the shell.
9. The shaft seal structure of claim 8,
the shaft seal structure further includes: an oil seal pressing plate for fixing the oil seal to the housing; the oil seal pressing plate is fixed to the housing.
10. The shaft seal structure of claim 9,
the oil seal pressing plate is mounted to an inner side surface of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920424398.XU CN210135246U (en) | 2019-03-29 | 2019-03-29 | Shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920424398.XU CN210135246U (en) | 2019-03-29 | 2019-03-29 | Shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210135246U true CN210135246U (en) | 2020-03-10 |
Family
ID=69703098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920424398.XU Active CN210135246U (en) | 2019-03-29 | 2019-03-29 | Shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210135246U (en) |
-
2019
- 2019-03-29 CN CN201920424398.XU patent/CN210135246U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200603 Address after: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 210000 No. 3, Jia Ao, Yuhuatai District, Jiangsu, Nanjing Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |