CN207621311U - Gear-box shaft end dynamic sealing device - Google Patents
Gear-box shaft end dynamic sealing device Download PDFInfo
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- CN207621311U CN207621311U CN201721494042.0U CN201721494042U CN207621311U CN 207621311 U CN207621311 U CN 207621311U CN 201721494042 U CN201721494042 U CN 201721494042U CN 207621311 U CN207621311 U CN 207621311U
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- transparent cover
- oil
- gap
- axis
- annular groove
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
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Abstract
The utility model discloses a kind of gear-box shaft end dynamic sealing device, including oil scraper ring, passes through sealing between the axis and axis and transparent cover of gear-box transparent cover, and mechanical seal and brush seal are sealed between axis and transparent cover, and oil scraper ring is positioned by the shoulder block on axis, wherein：Mechanical seal is that the one section of axial step type convergence cone gap formed after being combined with matched transparent cover by oil scraper ring and one section of radial direction are got rid of oil-gap and merged, axial step type convergence cone at least contains two-stage ladder in gap, it is equipped with oil gas between adjacent steps and expands annular groove, radially gets rid of the hydraulic fluid port that gets rid of after the bending of oil-gap end and is directed toward transparent cover；The transparent cover of corresponding mechanical seal outboard end is equipped with annular groove, and brush seal is embedded in annular groove, and the bristle of brush seal touches axis and forms band；Transparent cover on the outside of corresponding brush seal is equipped with oil resistance annular groove, and oil resistance annular groove minimum point is equipped with drainback passage, and drainback passage is linked up with the main drainback passage in babinet.
Description
Technical field
The utility model is related to a kind of sealing device, especially a kind of gear-box shaft end dynamic sealing device belongs to mechanical neck
Domain.
Background technology
It is the major measure for preventing oil leak in gear-box that sealing device is arranged on the input and output shaft of gear-box
One of, currently used sealing is generally oil sealing or labyrinth sealing, and wherein oil sealing with axis because be in direct contact, wearability
Index and corrosion resistance all propose higher technology requirement to material, and service life is far below labyrinth sealing.It is general more
For low speed small power gear-box.
Chinese patent 201220059091.2 discloses a kind of labyrinth sealing, it uses three not equal deep rectangular teeths
Labyrinth channel, and oil-recovery tank is opened up at channel 2 and 3, make to leak into fluid in channel and flows back to babinet.Although the utility model changes
Oil return effect has been apt to it, compared with oil sealing, service life is long for it, and the requirement to material is also harsh not as oil sealing.But by
In labyrinth sealing there are larger path clearance, axial resistance is smaller, and mist of oil holds very much caused by fast chamber high speed rotation
Easily overflowed from this gap.
Chinese patent 201320088426.8 is the improvement on the basis of above-mentioned No. 201220059091.2 patents, more than the latter
Two labyrinth channels are opened up, and oil-recovery tank is opened up on five channels.Although the utility model can be promoted and be improved close
Seal effect, but the axial resistance of seal clearance is still smaller, still cannot prevent mist of oil caused by fast chamber high speed rotation from
It is excessive in seal clearance.
It is asking there is an urgent need in the art to solution that the lubricating oil of gear-box, which how to be properly settled, by input and output shaft leakage
Topic.
Utility model content
The purpose of this utility model is that for such as oil sealing service life existing for current gearbox shaft end sealing device
And labyrinth sealing still results in a series of problems, such as mist of oil leakage, provides a kind of new gear-box shaft end dynamic sealing device.
What the purpose of this utility model was realized in：A kind of gear-box shaft end dynamic sealing device, including oil scraper ring, pass through
Sealing between the axis and axis and transparent cover of gear-box transparent cover, which is characterized in that be sealed into machine between the axis and transparent cover
Tool seals and brush seal, and oil scraper ring is positioned by the shoulder block on axis, wherein：
Mechanical seal be formed after being combined with matched transparent cover by oil scraper ring one section of axial step type convergence cone gap and
One section of radial direction is got rid of oil-gap and is merged, and the convergence of axial step type, which is bored, at least contains two-stage ladder in gap, between adjacent steps
Annular groove is expanded equipped with oil gas, the hydraulic fluid port that gets rid of after the bending of oil-gap end is radially got rid of and is directed toward transparent cover；
The transparent cover of corresponding mechanical seal outboard end is equipped with annular groove, brush seal inlay in annular groove, brush seal
Bristle touches axis and forms band；
Transparent cover on the outside of corresponding brush seal is equipped with oil resistance annular groove, and oil resistance annular groove is linked up with collection chamber, and collection chamber is minimum
Point is equipped with drainback passage, and drainback passage is linked up with the main drainback passage in babinet.
In the present invention, the oil scraper ring interference is mounted on an axle, and is limited by shoulder block, while axially fixed by key
Position.
In the present invention, it is one section of detour gap of turning back radially to get rid of oil-gap end, and oil is got rid of in detour of turning back gap
Mouth is directed toward transparent cover；The angle of ladder type convergence cone gap and axis is 30 ° -60 °.
In the present invention, radially getting rid of the hydraulic fluid port direction transparent cover of getting rid of after the 90-degree bent of oil-gap end refers to：Radial direction gets rid of oil
1 ° of -180 ° of detour in gap midway, latter end are in 90 ° with starting centrifugal direction, get rid of hydraulic fluid port and are directed toward transparent cover.In the present invention, institute
The transparent cover and brush seal stated are two-piece unit structure, and after brush seal is embedded in annular groove, the transparent cover of two-piece unit is by taper bolt
It is solidified as a whole by connection bolt after positioning, transparent cover is connect by the bolt on periphery with babinet.
In the present invention, the transparent cover surface on the transparent cover surface and drainback passage periphery that are combined with babinet is equipped with O
Type sealing ring.
The utility model has the advantage of：Since the utility model combines shape using mechanical seal and brush seal
Formula, the frictional resistance that the axis to passing through transparent cover generates is smaller, and sealed medium leak resistance is significantly increased and is kept off oily sum aggregate
The raising of oily ability, makes sealing performance greatly improve.Since mechanical seal is formed after being combined with matched transparent cover by oil scraper ring
One section of axial step type convergence cone gap and one section of radial direction get rid of oil-gap and merge, axial step type convergence cone gap in extremely
Contain two-stage ladder less, being equipped with oil gas between adjacent steps expands annular groove, radially gets rid of getting rid of after hydraulic fluid port is bent for oil-gap end and refers to
To transparent cover, therefore can be in wider PV values（The product of sealed medium pressure P and linear velocity V）Application in range.By
There is stronger aerosol adsorption capacity in brush seal, can be used for sealing gas or mist of oil；Since transparent cover and brush seal are equal
Using split type structure, it is easily installed and dismantles.O-ring seal can prevent lubricating oil from being leaked from transparent cover and babinet faying face.
The utility model is compact-sized, easy to maintain.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment
Fig. 2 is the close-up schematic view of A in Fig. 1.
Fig. 3-Fig. 5 be the utility model is related to several mechanical seal embodiments structural schematic diagram.
Fig. 6 is the close-up schematic view of B in Fig. 1.
Fig. 7 be the utility model is related to seperated transparent cover structural schematic diagram.
In figure：1, bolt, 2, transparent cover, 3, oil scraper ring, 4, brush seal, 5, key, 6, axis, 7, O-ring, 8, drainback passage,
9, babinet, 10, oil resistance annular groove, 11, main drainback passage, 12, it is radial get rid of oil-gap, 13, axial step type convergence cone gap, 14,
Oil gas expands annular groove, and 15, collect mist of oil chamber, 16, Micro blazed-grating chamber, 17, taper bolt, 18, connection bolt, 19, collection chamber.
Specific implementation mode
The unrestricted concrete structure for disclosing the utility model embodiment of attached drawing is new to this practicality below in conjunction with the accompanying drawings
Type is further described.
As seen from Figure 1, the utility model include oil scraper ring 3, pass through gear-box transparent cover 2 axis 6 and axis 6 and transparent cover 2 it
Between sealing, be sealed into mechanical seal and brush seal 4 between the axis 6 and transparent cover 2, oil scraper ring 3 is by the shoulder block on axis 6
Positioning, mechanical seal is formed after being combined with matched transparent cover 2 by oil scraper ring 3.Brush seal 4 is located on the outside of mechanical seal, brush
The bristle of formula sealing 4 touches axis 6 and forms band.The transparent cover 2 in 4 outside of corresponding brush seal is equipped with oil resistance annular groove 10, oil resistance
Annular groove 10 is linked up with collection chamber 19, and 19 minimum point of collection chamber is equipped with drainback passage 8, and drainback passage 8 and the main oil return in babinet 9 are logical
Road 11 is linked up.2 surface of transparent cover on 8 periphery of 2 surface of transparent cover and drainback passage combined with babinet 9 is equipped with O-ring seal 7.
In the present embodiment, 3 interference of oil scraper ring is mounted on axis 6, is limited by shoulder block, while being realized by key 5
Axially position.
From Figure 2 it can be seen that mechanical seal is the one section of axial step type formed after being combined with matched transparent cover 2 by oil scraper ring 3
Convergence cone gap 13 and one section of radial direction are got rid of oil-gap 12 and are merged, and axial step type convergence cone at least contains two-stage in gap 13
Ladder is equipped with oil gas expansion chamber 14 between adjacent steps, radially gets rid of the hydraulic fluid port that gets rid of after the bending of 12 end of oil-gap and is directed toward transparent cover 2,
The angle of ladder type convergence cone gap and axis is 30 ° -60 °.
When it is implemented, radial 12 end of oil-gap of getting rid of is one section of detour gap of turning back, Fig. 3 is radial gets rid of in oil-gap 12
Way can the detour bending between 1 ° -180 °, it is final to realize that latter end with starting centrifugal direction is in 90 °, gets rid of hydraulic fluid port and is directed toward transparent cover 2
Several example structure schematic diagrams, either Fig. 3 or Fig. 4 or embodiment shown in fig. 5, what they turned back detour gap gets rid of oil
Mouth is all directed to transparent cover 2.
As seen from Figure 6, transparent cover 2 is equipped with annular groove, and brush seal 4 is inlayed with annular groove, and the bristle of brush seal 4 touches axis
6 form band.In figure, the inside of brush seal 4（Figure left side）To collect mist of oil chamber 15, outside（Figure right side）For micro- permeation chamber
16。
As seen from Figure 7, the transparent cover 2（Including brush seal 4）For two-piece unit structure, when assembly, brush seal 4 is embedding
After entering annular groove, for the transparent cover 2 of two-piece unit by being solidified as a whole by connection bolt 18 after the positioning of taper bolt 17, transparent cover 2 passes through periphery again
Bolt 1 connect with babinet 9.
The course of work of the utility model is：The lubricating oil or mist of oil leaked out from bearing or bush gap enters oil-collecting
Chamber 19, big portion's lubricating oil meeting excessively main drainback passage 11 of lease making return to babinet 9, and a part is by oil scraper ring 3 and the formation of transparent cover 2
Oil resistance annular groove 10 is blocked in collection chamber 19, this parts of lubricating oil will be flowed to by main drainback passage 11 in babinet 9.
In gear-box operational process, has small portion's lubricating oil and form mist of oil, they are easy to can be by getting rid of oil-gap 12
Cone gap 13 is restrained with step type enter collect mist of oil chamber 15, it is several into collecting the mist of oil of mist of oil chamber 15 by brush seal 4 and stopping
There is no leakages, but after running a period of time, and mist of oil is condensed into lubricating oil collecting again in mist of oil chamber 15, and through brush
Micro gap between formula sealing 4 and axis 6 penetrates into Micro blazed-grating chamber 16, this parts of lubricating oil fluid enters oil resistance annular groove 10 and returns to collection
Oil pocket 19 flows to main drainback passage 11 by drainback passage 8, eventually flows in babinet 9.Realize the lubricating oil after being agglomerated to mist of oil
Recycling.
To entering axial step type convergence cone gap 13 and the radial bulky grain elaioleucite got rid of in oil-gap 12 together with mist of oil
It can be adsorbed on the wall of oil scraper ring 3, due to the centrifugation force effect of oil scraper ring 3, the lubricating oil on 3 wall of oil scraper ring can be pushed back again
Then collection chamber 19 is returned by main drainback passage 11 in babinet 9.
Claims (6)
1. a kind of gear-box shaft end dynamic sealing device, including oil scraper ring, pass through between the axis and axis and transparent cover of gear-box transparent cover
Sealing, which is characterized in that be sealed into mechanical seal and brush seal between the axis and transparent cover, oil scraper ring is by axis
Shoulder block positions, wherein：
Mechanical seal is the one section of axial step type convergence cone gap formed after being combined with matched transparent cover by oil scraper ring and one section
Radial direction is got rid of oil-gap and is merged, and axial step type convergence cone at least contains two-stage ladder in gap, is equipped between adjacent steps
Oil gas expands annular groove, radially gets rid of the hydraulic fluid port that gets rid of after the 90-degree bent of oil-gap end and is directed toward transparent cover；
The transparent cover of corresponding mechanical seal outboard end is equipped with annular groove, brush seal inlay in annular groove, the bristle of brush seal
It touches axis and forms band；
Transparent cover on the outside of corresponding brush seal is equipped with oil resistance annular groove, and oil resistance annular groove is linked up with collection chamber, and collection chamber minimum point is set
There are drainback passage, drainback passage to be linked up with the main drainback passage in babinet.
2. gear-box shaft end according to claim 1 dynamic sealing device, which is characterized in that the oil scraper ring interference installation
It on axis, is limited by shoulder block, while passing through key axially position.
3. gear-box shaft end according to claim 1 dynamic sealing device, which is characterized in that radial oil-gap end of getting rid of is one
Section is turned back detour gap, and the hydraulic fluid port that gets rid of in detour of turning back gap is directed toward transparent cover；The angle of ladder type convergence cone gap and axis is 30 °-
60°。
4. gear-box shaft end according to claim 3 dynamic sealing device, which is characterized in that radial to get rid of the bending of oil-gap end
After 90 ° get rid of hydraulic fluid port be directed toward transparent cover refer to：Radial direction gets rid of 1 ° of -180 ° of detour in oil-gap midway, and latter end is in starting centrifugal direction
It 90 °, gets rid of hydraulic fluid port and is directed toward transparent cover.
5. the gear-box shaft end dynamic sealing device according to one of claim 1-4, which is characterized in that the transparent cover and brush
Formula sealing is two-piece unit structure, after brush seal is embedded in annular groove, the transparent cover of two-piece unit by after circular cone finger setting again by even
Connecting bolt is solidified as a whole, and last transparent cover is connect by the bolt on periphery with babinet.
6. gear-box shaft end according to claim 5 dynamic sealing device, which is characterized in that the transparent cover surface combined with babinet
And the transparent cover surface on drainback passage periphery is equipped with O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721494042.0U CN207621311U (en) | 2017-11-10 | 2017-11-10 | Gear-box shaft end dynamic sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721494042.0U CN207621311U (en) | 2017-11-10 | 2017-11-10 | Gear-box shaft end dynamic sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207621311U true CN207621311U (en) | 2018-07-17 |
Family
ID=62828117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721494042.0U Active CN207621311U (en) | 2017-11-10 | 2017-11-10 | Gear-box shaft end dynamic sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207621311U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869570A (en) * | 2017-11-10 | 2018-04-03 | 南京高精齿轮集团有限公司 | Gear-box shaft end dynamic sealing device |
| CN110159738A (en) * | 2019-06-25 | 2019-08-23 | 重庆望江工业有限公司 | A kind of wind turbine gearbox input sealing structure |
| CN113958693A (en) * | 2021-12-22 | 2022-01-21 | 胜利油田新海兴达实业集团有限责任公司 | Oil field horizontal speed reducer splash lubrication's sealing device |
-
2017
- 2017-11-10 CN CN201721494042.0U patent/CN207621311U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869570A (en) * | 2017-11-10 | 2018-04-03 | 南京高精齿轮集团有限公司 | Gear-box shaft end dynamic sealing device |
| CN110159738A (en) * | 2019-06-25 | 2019-08-23 | 重庆望江工业有限公司 | A kind of wind turbine gearbox input sealing structure |
| CN113958693A (en) * | 2021-12-22 | 2022-01-21 | 胜利油田新海兴达实业集团有限责任公司 | Oil field horizontal speed reducer splash lubrication's sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191012 Address after: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee after: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee after: Nanjing High Precision Gear Group Co., Ltd. Address before: 210012 Yuhuatai No. 3, Nanjing, Jiangsu Province Patentee before: Nanjing High Precision Gear Group Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200508 Address after: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000 Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |