CN112696485A - Non-contact combined seal for gearbox - Google Patents
Non-contact combined seal for gearbox Download PDFInfo
- Publication number
- CN112696485A CN112696485A CN202011565133.5A CN202011565133A CN112696485A CN 112696485 A CN112696485 A CN 112696485A CN 202011565133 A CN202011565133 A CN 202011565133A CN 112696485 A CN112696485 A CN 112696485A
- Authority
- CN
- China
- Prior art keywords
- oil storage
- storage cavity
- storage chamber
- centrifugal
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4472—Labyrinth packings with axial path
Abstract
The invention aims to provide a non-contact combined seal for a gearbox, which comprises a box body, a static ring, a dynamic ring and a rotating shaft, wherein the dynamic ring of the seal structure is installed on the rotating shaft, the dynamic ring is provided with 3 layers of centrifugal structures, when a shaft system rotates at a high speed, a lubricating medium is thrown out through the centrifugal force generated by the rotation of the centrifugal structures, 3 oil storage cavities are arranged at the corresponding positions of the static ring and the dynamic ring centrifugal structures, the centrifugal structures of the dynamic ring and the oil storage cavities of the static ring need to be matched for use, the lubricating medium thrown out by the centrifugal structures falls into the oil storage cavities on the static ring, each oil storage cavity is divided into an upper oil storage structure and a lower oil storage structure, the lubricating medium thrown into the upper oil storage structure flows into the upper oil storage structure, and when the lubricating medium of the upper oil storage structure flows to the bottom, the lubricating medium flows into the lower oil storage structure and cannot flow back to the centrifugal structures. The invention can prevent the reverse flow of the fluid to the maximum extent and achieve the sealing effect, and the multistage conical sealing structure can realize the effect of reducing pressure and blocking the fluid by the step-by-step pressure blocking arrangement.
Description
Technical Field
The invention relates to a sealing structure, in particular to a gearbox sealing structure.
Background
The seal is a structure which must be used by a rotating shaft system of the gearbox, and generally comprises a contact seal and a non-contact seal, wherein the contact seal is generally a structure which is matched with a rotating structure and a static structure for use and is in contact with each other, so that the sealing effect is achieved, the service life is short, and the seal needs to be replaced regularly; the non-contact sealing generally depends on the centrifugal force, pressure difference and other effects generated between the rotating part and the fixed part to achieve the sealing effect, and the rotating part and the fixed part are not in contact with each other and have no loss, so the non-contact sealing has long service life and generally does not need to be replaced, but a pure single sealing mode often cannot achieve the good sealing effect, and particularly in the application of a high-speed gearbox, the leakage condition of a lubricating medium occurs at all times.
Disclosure of Invention
The invention aims to provide a non-contact combined seal for a gearbox, which can effectively prevent a fluid lubricating medium inside the gearbox from leaking along a shaft neck during operation of the gearbox.
The purpose of the invention is realized as follows:
the invention relates to a non-contact combined seal for a gearbox, which is characterized in that: the centrifugal sealing device comprises a box body, a static ring, a movable ring and a rotating shaft, wherein the static ring is fixed on the box body, the movable ring is fixed on the rotating shaft through a locking nut, a first oil storage cavity wall and a second oil storage cavity wall are arranged in the static ring, a first oil storage cavity is arranged between the first oil storage cavity wall and the outer wall of the static ring, the first oil storage cavity wall and the second oil storage cavity wall are second oil storage cavities, a third oil storage cavity is arranged between the second oil storage cavity wall and the inner wall of the static ring, arc bulges are arranged at the end parts of the first oil storage cavity wall and the second oil storage cavity wall, a first arc-shaped recess and a second arc-shaped recess are arranged on the movable ring, a movable ring root bulge is arranged at the root part of the movable ring, the first centrifugal sealing structure is formed by the arc bulge at the first oil storage cavity wall and the first arc-shaped recess, the second centrifugal sealing structure is formed by the arc bulge at the second oil storage cavity wall and the second arc-shaped recess, a conical labyrinth seal structure is formed between the inner wall of the static ring and the outer wall of the dynamic ring.
The present invention may further comprise:
1. first oil storage chamber includes first oil storage chamber upper portion oil storage chamber and first oil storage chamber lower part oil storage chamber, and second oil storage chamber includes second oil storage chamber upper portion oil storage chamber and second oil storage chamber lower part oil storage chamber, and third oil storage chamber includes third oil storage chamber upper portion oil storage chamber and third oil storage chamber lower part oil storage chamber, and first oil storage chamber upper portion oil storage chamber is lubricated fluid flow route, sets up the egress opening on the quiet rampart of first oil storage chamber lower part oil storage chamber below.
2. When the rotating shaft drives the rotating ring to rotate, lubricating fluid passes through the first centrifugal sealing structure along the flowing route, part of the lubricating fluid is thrown out by centrifugal force and falls into the first oil storage cavity, the lubricating fluid in the first oil storage cavity flows out along the outflow port, part of the lubricating fluid reaches the second centrifugal sealing through the first centrifugal sealing, the rest of the lubricating fluid directly falls into the upper oil storage cavity or the lower oil storage cavity of the second oil storage cavity, the lubricating fluid thrown out by the second centrifugal sealing also flows out through the outflow port at the bottom, the lubricating fluid thrown out by the third centrifugal sealing flows into the upper oil storage cavity or the lower oil storage cavity of the third oil storage cavity and finally flows out through the outflow port, and finally the energy loss is generated through pressure resistance by the conical labyrinth sealing structure arranged at the sealing tail end.
The invention has the advantages that: according to the invention, the rotating shaft is provided with the sealing movable ring, the movable ring is provided with 3 layers of centrifugal oil throwing structures, the sealed static ring is provided with the oil storage cavity structure, and the sealing tail end is provided with the multi-stage conical sealing structure. Get rid of oily structure and oil storage chamber structural grouping through the centrifugation and use, collect the fluid medium who gets rid of from the centrifugation structural to 3 layers of centrifugation are set up and are got rid of oily structure and oil storage chamber structural grouping, and furthest prevents that the fluid from palirrhea, reach sealed effect, multistage toper seal structure hinder the pressure setting step by step, reach the fluidic effect of decompression separation, and multilayer combination sets up, reaches final sealed effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the seal of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1-2, the technical solution adopted by the present invention to solve the technical problem is: the rotating shaft 13 is provided with a movable ring 12 of the sealing structure, the movable ring 12 is provided with a 3-layer centrifugal structure, when the shaft system rotates at high speed, the lubricating medium is thrown out by the centrifugal force generated by the rotation of the centrifugal structure, 3 oil storage chambers are arranged at the corresponding positions of the centrifugal structures of the static ring 14 and the moving ring 12, the centrifugal structure of the moving ring 12 and the oil storage chambers of the static ring 14 need to be matched for use, lubricating media thrown out by the centrifugal structure can fall into the oil storage chambers on the static ring 14, each oil storage chamber is divided into an upper oil storage structure and a lower oil storage structure, the lubricating media thrown into the upper oil storage structure can flow into the upper oil storage structure, and when the lubricating media of the upper oil storage structure flows to the bottom, the lubricating media can flow into the lower oil storage structure and cannot flow back to the centrifugal structure, and meanwhile, an oil discharge hole 10 is formed in the bottom of the oil storage cavity, and a lubricating medium finally gets out of the sealing structure through the oil discharge hole, so that the sealing effect is achieved.
The movable ring 12 is mounted on the rotating shaft 13, the movable ring 12 is fixed on the rotating shaft 13 through the locking nut 16, the static ring 14 is fixed on the box body 11 through the bolt structure, and the lubricating medium is blocked in the box body inner part 18 and isolated from the atmosphere 17 through the sealing structure.
When the rotating shaft drives the rotating ring to rotate, the lubricating fluid passes through the first centrifugal sealing structure 2 along the flow path 1, most of the lubricating fluid can be thrown out by centrifugal force and falls into the first oil storage cavity 5, the lubricating fluid in the first oil storage cavity 5 can flow into the sealing bottom along the oil storage cavity and flows out of the sealing structure along the outflow path 10, part of the medium passing through the first centrifugal sealing 2 can reach the second centrifugal sealing 3, the rest of the fluid can directly fall into the upper oil storage cavity 6 or the lower oil storage cavity 9 of the second oil storage cavity, the lubricating fluid thrown out by the second centrifugal sealing 3 can also flow into the oil storage cavity, finally the sealing structure flows out through the outflow path 10 at the bottom, the same lubricating fluid thrown out by the third centrifugal sealing 4 can flow into the upper oil storage cavity 7 or the lower oil storage cavity 8 of the third oil storage cavity, and finally the sealing structure flows out through the outflow path 10 at the bottom, finally, the fluid passes through a conical labyrinth seal structure arranged at the seal tail end, and generates great energy loss through multiple pressure barriers, so that the lubricating fluid is difficult to leak, and the purpose of good sealing is finally achieved.
Claims (3)
1. A non-contact combined seal for a gearbox is characterized in that: the centrifugal sealing device comprises a box body, a static ring, a movable ring and a rotating shaft, wherein the static ring is fixed on the box body, the movable ring is fixed on the rotating shaft through a locking nut, a first oil storage cavity wall and a second oil storage cavity wall are arranged in the static ring, a first oil storage cavity is arranged between the first oil storage cavity wall and the outer wall of the static ring, the first oil storage cavity wall and the second oil storage cavity wall are second oil storage cavities, a third oil storage cavity is arranged between the second oil storage cavity wall and the inner wall of the static ring, arc bulges are arranged at the end parts of the first oil storage cavity wall and the second oil storage cavity wall, a first arc-shaped recess and a second arc-shaped recess are arranged on the movable ring, a movable ring root bulge is arranged at the root part of the movable ring, the first centrifugal sealing structure is formed by the arc bulge at the first oil storage cavity wall and the first arc-shaped recess, the second centrifugal sealing structure is formed by the arc bulge at the second oil storage cavity wall and the second arc-shaped recess, a conical labyrinth seal structure is formed between the inner wall of the static ring and the outer wall of the dynamic ring.
2. The non-contact composite seal for a transmission of claim 1, wherein: first oil storage chamber includes first oil storage chamber upper portion oil storage chamber and first oil storage chamber lower part oil storage chamber, and second oil storage chamber includes second oil storage chamber upper portion oil storage chamber and second oil storage chamber lower part oil storage chamber, and third oil storage chamber includes third oil storage chamber upper portion oil storage chamber and third oil storage chamber lower part oil storage chamber, and first oil storage chamber upper portion oil storage chamber is lubricated fluid flow route, sets up the egress opening on the quiet rampart of first oil storage chamber lower part oil storage chamber below.
3. The non-contact combination seal for a transmission according to claim 2, wherein: when the rotating shaft drives the rotating ring to rotate, lubricating fluid passes through the first centrifugal sealing structure along the flowing route, part of the lubricating fluid is thrown out by centrifugal force and falls into the first oil storage cavity, the lubricating fluid in the first oil storage cavity flows out along the outflow port, part of the lubricating fluid reaches the second centrifugal sealing through the first centrifugal sealing, the rest of the lubricating fluid directly falls into the upper oil storage cavity or the lower oil storage cavity of the second oil storage cavity, the lubricating fluid thrown out by the second centrifugal sealing also flows out through the outflow port at the bottom, the lubricating fluid thrown out by the third centrifugal sealing flows into the upper oil storage cavity or the lower oil storage cavity of the third oil storage cavity and finally flows out through the outflow port, and finally the energy loss is generated through pressure resistance by the conical labyrinth sealing structure arranged at the sealing tail end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011565133.5A CN112696485B (en) | 2020-12-25 | 2020-12-25 | Non-contact combined seal for gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011565133.5A CN112696485B (en) | 2020-12-25 | 2020-12-25 | Non-contact combined seal for gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112696485A true CN112696485A (en) | 2021-04-23 |
| CN112696485B CN112696485B (en) | 2022-06-24 |
Family
ID=75510812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011565133.5A Active CN112696485B (en) | 2020-12-25 | 2020-12-25 | Non-contact combined seal for gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112696485B (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177802A (en) * | 1995-12-25 | 1997-07-11 | Tokuo Okabayashi | Sealing device and sealing method for rotary machine |
| CN101251191A (en) * | 2008-03-28 | 2008-08-27 | 宁波东力传动设备股份有限公司 | Combined seal structure for overloading gear case high speed axis |
| JP2013210070A (en) * | 2012-03-30 | 2013-10-10 | Kyb Co Ltd | Seal structure of endless track drive unit |
| CN203560407U (en) * | 2013-11-20 | 2014-04-23 | 北京南口轨道交通机械有限责任公司 | Non-contact sealing structure for gearbox and gearbox |
| CN104896103A (en) * | 2015-05-29 | 2015-09-09 | 大丰市和顺新能源科技研发有限公司 | Oil sand separation groove shaft seal apparatus |
| CN204921994U (en) * | 2015-08-31 | 2015-12-30 | 湖北新置密封件有限公司 | Sealing device is kept apart to combination formula based on dust lip |
| CN205089981U (en) * | 2015-10-18 | 2016-03-16 | 邓伦胜 | Independently arrange two -way multiple sealing device of fat formula |
| CN205173473U (en) * | 2015-10-20 | 2016-04-20 | 邓伦胜 | Fat sealing device is independently arranged to labyrinth |
| JP2016156463A (en) * | 2015-02-25 | 2016-09-01 | 新日鐵住金株式会社 | Non-contact seal device for gear device for railroad vehicle |
| CN205559799U (en) * | 2016-02-29 | 2016-09-07 | 邓伦胜 | A labyrinth seals isolating device for in vertical axis |
| CN206694561U (en) * | 2017-04-14 | 2017-12-01 | 刘丽霞 | A kind of special labyrinth gland of spray cooling system |
| CN107461411A (en) * | 2017-08-14 | 2017-12-12 | 童春国 | A kind of labyrinth seal structure for bearing block |
| CN207005297U (en) * | 2017-06-29 | 2018-02-13 | 广州市晖盈机电科技有限公司 | A kind of pulvis raw material stirring tower driving axle sealing structure |
| CN207034184U (en) * | 2017-08-14 | 2018-02-23 | 童春国 | A kind of stepped tooth labyrinth seal structure |
| CN208417537U (en) * | 2018-04-17 | 2019-01-22 | 北京交通大学 | High speed magnetic liquid end face labyrinth gland |
| CN208619676U (en) * | 2018-07-31 | 2019-03-19 | 湖北新置科技股份有限公司 | A kind of labyrinth type isolation water conservancy diversion sealing device |
| CN208619674U (en) * | 2018-07-31 | 2019-03-19 | 湖北新置科技股份有限公司 | Water conservancy diversion sealing device is isolated |
| CN208686968U (en) * | 2018-08-28 | 2019-04-02 | 童春国 | A kind of oil enveloping structure for bearing block |
| CN110594414A (en) * | 2019-08-26 | 2019-12-20 | 江门市鑫辉特种密封科技有限公司 | Axial multi-lip labyrinth seal device for rotating shaft |
| CN211820745U (en) * | 2019-12-21 | 2020-10-30 | 中国船舶重工集团公司第七一七研究所 | Precision machinery rotating sealing device |
-
2020
- 2020-12-25 CN CN202011565133.5A patent/CN112696485B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177802A (en) * | 1995-12-25 | 1997-07-11 | Tokuo Okabayashi | Sealing device and sealing method for rotary machine |
| CN101251191A (en) * | 2008-03-28 | 2008-08-27 | 宁波东力传动设备股份有限公司 | Combined seal structure for overloading gear case high speed axis |
| JP2013210070A (en) * | 2012-03-30 | 2013-10-10 | Kyb Co Ltd | Seal structure of endless track drive unit |
| CN203560407U (en) * | 2013-11-20 | 2014-04-23 | 北京南口轨道交通机械有限责任公司 | Non-contact sealing structure for gearbox and gearbox |
| JP2016156463A (en) * | 2015-02-25 | 2016-09-01 | 新日鐵住金株式会社 | Non-contact seal device for gear device for railroad vehicle |
| CN104896103A (en) * | 2015-05-29 | 2015-09-09 | 大丰市和顺新能源科技研发有限公司 | Oil sand separation groove shaft seal apparatus |
| CN204921994U (en) * | 2015-08-31 | 2015-12-30 | 湖北新置密封件有限公司 | Sealing device is kept apart to combination formula based on dust lip |
| CN205089981U (en) * | 2015-10-18 | 2016-03-16 | 邓伦胜 | Independently arrange two -way multiple sealing device of fat formula |
| CN205173473U (en) * | 2015-10-20 | 2016-04-20 | 邓伦胜 | Fat sealing device is independently arranged to labyrinth |
| CN205559799U (en) * | 2016-02-29 | 2016-09-07 | 邓伦胜 | A labyrinth seals isolating device for in vertical axis |
| CN206694561U (en) * | 2017-04-14 | 2017-12-01 | 刘丽霞 | A kind of special labyrinth gland of spray cooling system |
| CN207005297U (en) * | 2017-06-29 | 2018-02-13 | 广州市晖盈机电科技有限公司 | A kind of pulvis raw material stirring tower driving axle sealing structure |
| CN107461411A (en) * | 2017-08-14 | 2017-12-12 | 童春国 | A kind of labyrinth seal structure for bearing block |
| CN207034184U (en) * | 2017-08-14 | 2018-02-23 | 童春国 | A kind of stepped tooth labyrinth seal structure |
| CN208417537U (en) * | 2018-04-17 | 2019-01-22 | 北京交通大学 | High speed magnetic liquid end face labyrinth gland |
| CN208619676U (en) * | 2018-07-31 | 2019-03-19 | 湖北新置科技股份有限公司 | A kind of labyrinth type isolation water conservancy diversion sealing device |
| CN208619674U (en) * | 2018-07-31 | 2019-03-19 | 湖北新置科技股份有限公司 | Water conservancy diversion sealing device is isolated |
| CN208686968U (en) * | 2018-08-28 | 2019-04-02 | 童春国 | A kind of oil enveloping structure for bearing block |
| CN110594414A (en) * | 2019-08-26 | 2019-12-20 | 江门市鑫辉特种密封科技有限公司 | Axial multi-lip labyrinth seal device for rotating shaft |
| CN211820745U (en) * | 2019-12-21 | 2020-10-30 | 中国船舶重工集团公司第七一七研究所 | Precision machinery rotating sealing device |
Non-Patent Citations (3)
| Title |
|---|
| 吕玲: "轧机用联合减速机轴端密封结构设计", 《南方农机》 * |
| 洪云霞: "组合式密封在石油钻机上的应用", 《机械工程师》 * |
| 韩国军等: "迷宫螺旋组合密封的结构型式与应用", 《化工设备与管道》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112696485B (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4781553A (en) | Screw vacuum pump with lubricated bearings and a plurality of shaft sealing means | |
| CN108019430B (en) | Fluid machinery lubricating system assembly | |
| CN112696485B (en) | Non-contact combined seal for gearbox | |
| CN202327106U (en) | Heavy type rotary mechanical sealing device with hydraulic balance structure | |
| CN108019487A (en) | The harmonic speed reducer of rigid wheel with the U-shaped tooth of bicircular arcs | |
| CN209540466U (en) | One kind dividing equally lubricating oil bearing-lubricating device | |
| US6969242B2 (en) | Compressor | |
| CN206694561U (en) | A kind of special labyrinth gland of spray cooling system | |
| CN115789222A (en) | Non-contact combined labyrinth seal structure for gear box | |
| CN209349960U (en) | A kind of Lathe Spindle Box primary shaft belt pulley sealing structure | |
| CN102062198B (en) | High-speed driven gearbox device of railway vehicle | |
| CN108488363B (en) | Planetary reducer | |
| US3927889A (en) | Rotating element fluid seal for centrifugal compressor | |
| CN206320295U (en) | Rotate the liquid sealing structure of machinery | |
| CN213270967U (en) | Compound sealing device that seals of modularization high-speed gear box | |
| CN207673810U (en) | The harmonic speed reducer of rigid wheel with the U-shaped tooth of bicircular arcs | |
| CN104300724A (en) | Structure for preventing traction motor from leaking oil | |
| CN108223589B (en) | Bearing sealing device | |
| CN206377276U (en) | A kind of shaft sealing device | |
| CN112431863A (en) | Filamentation machine sealing structure | |
| CN209539554U (en) | A kind of oil free screw compressor support end structure | |
| JP2004507687A (en) | Hydrodynamic components | |
| CN111271456A (en) | Mechanical sealing device suitable for multi-working-condition vacuum equipment | |
| CN114704481B (en) | Centrifugal fan capable of preventing oil leakage in high-pressure area | |
| CN113202490B (en) | Water jet flow adapter for shield tunneling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |