CN215445049U - Speed reducer shaft sealing device - Google Patents
Speed reducer shaft sealing device Download PDFInfo
- Publication number
- CN215445049U CN215445049U CN202121479470.2U CN202121479470U CN215445049U CN 215445049 U CN215445049 U CN 215445049U CN 202121479470 U CN202121479470 U CN 202121479470U CN 215445049 U CN215445049 U CN 215445049U
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- CN
- China
- Prior art keywords
- sealing
- rotating shaft
- cavity
- primary
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 81
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 18
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Sealing Of Bearings (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model provides a speed reducer shaft sealing device which comprises a dust-proof piece, a primary sealing piece and a second sealing piece which are arranged on a rotating shaft, wherein a sealing cover is arranged at one side port of a machine body, a first through cavity and a second through cavity which are used for being rotatably drawn through are respectively arranged on the machine body and the sealing cover, a bearing is arranged between the rotating shaft and the first through cavity, an o-shaped sealing ring is arranged between the bearing and the inner wall of the first through cavity, and the primary sealing piece, the secondary sealing piece and an oil blocking ring are sequentially arranged between the rotating shaft and the second through cavity from left to right. The utility model has the beneficial effects that: the arranged primary sealing element and the second sealing element improve the axial and radial sealing effect and prevent oil leakage; and the dust-proof piece effectively prevents dust from entering the rotating shaft.
Description
Technical Field
The utility model belongs to the technical field of shaft end sealing, and particularly relates to a speed reducer shaft sealing device.
Background
In various speed reducers, leakage can cause various hazards, such as equipment failure, chemical raw material scrapping and environmental pollution, and even personal safety is endangered. The invasion of gas, water, dust and the like in the environment into equipment can pollute working media, influence the product quality or aggravate the abrasion of parts and shorten the service life of the machine. The existing speed reducer still has the phenomena that the radial sealing effect of a shaft is not good enough and oil is easy to leak, and the working time of the speed reducer is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a shaft sealing device of a speed reducer, which improves the radial sealing effect of a shaft, effectively prevents dust from entering the shaft, prevents oil leakage and is particularly suitable for places needing high sealing performance.
The technical scheme of the utility model is as follows: a shaft sealing device of a speed reducer comprises a dustproof piece, a primary sealing piece and a second sealing piece which are arranged on a rotating shaft, a sealing cover is arranged at one side port of the machine body, a first through cavity and a second through cavity which are used for being rotationally drawn through are respectively arranged on the machine body and the sealing cover, a bearing is arranged between the rotating shaft and the first through cavity, an o-shaped sealing ring is arranged between the bearing and the inner wall of the first through cavity, a primary sealing element, a secondary sealing element and an oil blocking ring are sequentially arranged between the rotating shaft and the second through cavity from left to right, the primary sealing element comprises a primary left sealing ring, a primary oil seal and a primary right sealing ring which are sequentially sleeved on the rotating shaft, the secondary sealing element comprises a secondary left sealing ring, a secondary oil seal and a secondary right sealing ring which are sequentially sleeved on the rotating shaft, the dustproof piece be the annular dust guard that sets up along the axis of rotation ring circumference, and the annular dust guard right-hand member is fixed and is led to the left end outside in chamber at the second.
Preferably, the cover is fixed on the machine body through screws.
Preferably, the section of the annular dust guard is trapezoidal, and the inner wall of the annular dust guard is attached to the outer wall of the rotating shaft.
Preferably, the lip of each oil seal is tightened on the rotating shaft through a spring, and the lip of each oil seal forms a sliding flexible fit with the rotating shaft.
Preferably, the oil blocking ring is arranged close to the joint of the first through cavity and the second through cavity.
The utility model has the advantages and positive effects that: by adopting the technical scheme, the arranged primary sealing element and the second sealing element improve the axial and radial sealing effect and prevent oil leakage; and the dust-proof piece effectively prevents dust from entering the rotating shaft.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure:
1. rotating shaft 2, machine body 3 and sealing cover
4. Bearing 5, oil-blocking ring 6, one-level left sealing ring
7. First-level oil seal 8, first-level right sealing ring 9 and second-level left sealing ring
10. A secondary oil seal 11, a secondary right sealing ring 12 and an annular dust guard.
Detailed Description
As shown in figure 1, the technical scheme of the utility model is that the speed reducer shaft sealing device comprises a dust-proof part, a primary sealing part and a second sealing part which are arranged on a rotating shaft 1, a sealing cover 3 is arranged at one side port of a machine body 2, a first through cavity and a second through cavity which are used for a rotating pump 1 to penetrate through are respectively arranged on the machine body 2 and the sealing cover 3, a bearing 4 is arranged between the rotating shaft and the first through cavity, an o-shaped sealing ring (not shown) is arranged between the bearing 4 and the inner wall of the first through cavity, an oil blocking ring 5, the primary sealing part and a secondary sealing part are sequentially arranged between the rotating shaft 1 and the second through cavity from left to right, the primary sealing part comprises a primary left sealing ring 6, a primary oil seal 7 and a primary right sealing ring 8 which are sequentially sleeved on the rotating shaft 1, and the secondary sealing part comprises a secondary left sealing ring 9, a primary right sealing ring 8 which is sequentially sleeved on the rotating shaft 1, Second grade oil blanket 10, second grade right side sealing washer 11, the dust keeper be along the annular dust guard 12 of 1 circumference setting of axis of rotation, and the left end outside that the second leads to the chamber is fixed to annular dust guard 12 right-hand member.
In this embodiment, the cover 3 is fixed on the body 2 by screws.
In this embodiment, the section of the annular dust guard 12 is trapezoidal, and the inner wall of the annular dust guard is attached to the outer wall of the rotating shaft 1.
In this embodiment, the lip of each oil seal is tightened on the rotating shaft 1 through a spring, and the lip of each oil seal forms a sliding flexible fit with the rotating shaft 1.
In this embodiment, the sealing cover 3 is internally provided with a placing groove for placing the oil blocking ring 5, the primary sealing element and the secondary sealing element.
The working process and principle of the example are as follows: when the oil-resistant ring works, the oil-resistant ring and the transmission shaft 4 rotate at high speed, oil is prevented from leaking under the action of centrifugal force, and the axial radial sealing function is improved by the primary sealing element and the secondary sealing element arranged on the rotating shaft.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the utility model. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (5)
1. The utility model provides a speed reducer axle sealing device which characterized in that: comprises a dust-proof piece, a first-stage sealing piece and a second sealing piece which are arranged on a rotating shaft, a sealing cover is arranged at the port of one side of a machine body, the machine body and the sealing cover are respectively provided with a first through cavity and a second through cavity which are used for being rotationally drawn through, a bearing is arranged between the rotating shaft and the first through cavity, an o-shaped sealing ring is arranged between the bearing and the inner wall of the first through cavity, a primary sealing element, a secondary sealing element and an oil blocking ring are sequentially arranged between the rotating shaft and the second through cavity from left to right, the primary sealing element comprises a primary left sealing ring, a primary oil seal and a primary right sealing ring which are sequentially sleeved on the rotating shaft, the secondary sealing element comprises a secondary left sealing ring, a secondary oil seal and a secondary right sealing ring which are sequentially sleeved on the rotating shaft, the dustproof piece be the annular dust guard that sets up along the axis of rotation ring circumference, and the annular dust guard right-hand member is fixed and is led to the left end outside in chamber at the second.
2. The reducer shaft sealing device according to claim 1, wherein: the sealing cover is fixed on the machine body through screws.
3. The reducer shaft sealing device according to claim 1, wherein: the section of the annular dust guard is trapezoidal, and the inner wall of the annular dust guard is attached to the outer wall of the rotating shaft.
4. The reducer shaft sealing device according to claim 1, wherein: the lip of each oil seal is tightened on the rotating shaft through a spring, and the lip of each oil seal is in sliding flexible fit with the rotating shaft.
5. The reducer shaft sealing device according to claim 1, wherein: the oil blocking ring is arranged close to the joint of the first through cavity and the second through cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121479470.2U CN215445049U (en) | 2021-07-01 | 2021-07-01 | Speed reducer shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121479470.2U CN215445049U (en) | 2021-07-01 | 2021-07-01 | Speed reducer shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215445049U true CN215445049U (en) | 2022-01-07 |
Family
ID=79714165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121479470.2U Expired - Fee Related CN215445049U (en) | 2021-07-01 | 2021-07-01 | Speed reducer shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215445049U (en) |
-
2021
- 2021-07-01 CN CN202121479470.2U patent/CN215445049U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220107 |