CN110566670A - Axial multi-lip rotary supporting sealing device - Google Patents
Axial multi-lip rotary supporting sealing device Download PDFInfo
- Publication number
- CN110566670A CN110566670A CN201910787844.8A CN201910787844A CN110566670A CN 110566670 A CN110566670 A CN 110566670A CN 201910787844 A CN201910787844 A CN 201910787844A CN 110566670 A CN110566670 A CN 110566670A
- Authority
- CN
- China
- Prior art keywords
- lip
- sealing
- end cover
- ring
- sealing lip
- 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.)
- Pending
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- 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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention provides an axial multi-lip rotary supporting and sealing device, which consists of a supporting part and a sealing part which are connected into a whole, wherein the supporting part is fixedly connected with an end cover, the supporting part comprises a fixing ring arranged along the axial direction and a main ring arranged along the radial direction, the main ring is positioned in a groove arranged on the side wall of the end cover, and the fixing ring is arranged in the end cover in an interference fit manner; the cross-section of sealing portion is "claw" style of calligraphy, includes the go-between that sets up along the axial and the first seal lip, the second seal lip that set up towards seal chamber one side slope and the dustproof lip that sets up towards external one side slope, and the one end of go-between is connected with the primary ring, and the outer circumference of go-between is laminated mutually with the interior circumference of end cover, and the interior circumference of first seal lip and second seal lip all contacts sealedly with the axis of rotation. The device can carry out better sealed to the cavity that contains lubricating grease between axis of rotation and the box, and its simple structure, simple to operate, easy to maintain, life are permanent.
Description
Technical Field
The invention provides a sealing device, in particular provides a sealing device for sealing a rotating shaft in the rotating shaft, and belongs to the technical field of mechanical sealing.
Background
The labyrinth seal is a device which is provided with a plurality of annular seal teeth arranged in sequence around a rotating shaft, a series of cut-off gaps and expansion cavities are formed between the teeth, and the purpose of leakage resistance is achieved by the throttling effect generated when the sealed medium passes through the gaps of the zigzag labyrinth. The labyrinth seal has no solid contact because of the clearance between the rotor and the casing, and allows thermal expansion, so that the labyrinth seal is suitable for occasions of high temperature, high pressure and high rotating speed frequency, and is widely used for sealing shaft ends and stages of steam turbines, gas turbines, compressors and blowers.
In some occasions with strict use requirements, the sealing device not only needs to achieve zero leakage of lubricating oil in the sealing cavity, but also needs to achieve the purpose of preventing external pollutants from entering the sealing cavity, and in addition, the sealing device also has higher requirements on the service life of the sealing element.
the sealing devices in the prior art are more in variety, complicated or simple in structure, and different in sealing performance. In general, however, it would be desirable to provide a seal assembly that is simple in construction, has good sealing properties, and has a long useful life.
Disclosure of Invention
The invention provides an axial multi-lip rotary support sealing device, which can better seal a cavity containing lubricating grease between a rotating shaft and a box body, and has the advantages of simple structure, convenience in installation, easiness in maintenance and long service life.
The technical scheme adopted for realizing the above purpose of the invention is as follows:
An axial multi-lip rotary supporting and sealing device is arranged between a rotating shaft and an end cover, the rotating shaft is arranged in the end cover and extends out of the end cover, a sealing cavity is formed in a gap between the inner part of the end cover and the rotating shaft, the axial multi-lip rotary supporting and sealing device is of a whole-circle structure or an opening structure and consists of a supporting part and a sealing part which are connected into a whole, the supporting part is fixedly connected with the end cover, the supporting part comprises a fixing ring arranged along the axial direction and a main ring arranged along the radial direction, the main ring is positioned in a groove arranged on the side wall of the end cover, one end of the fixing ring is connected with the main ring into a whole, the fixing ring extends into the inner part of the end cover from the groove;
the section of the sealing part is in a claw shape and comprises a connecting ring arranged along the axial direction, a first sealing lip and a second sealing lip which are arranged towards one side of the sealing cavity in an inclined mode, and a dust-proof lip which is arranged towards one side of the outside in an inclined mode, wherein the first sealing lip and the second sealing lip are of an integrated structure, one end of the connecting ring is connected with the main ring, the outer circumference of the connecting ring is attached to the inner circumference of the end cover, and the inner circumferences of the first sealing lip and the second sealing lip are in contact sealing with the rotating shaft; the first spring piece is arranged along the inner circumference of the fixed ring, the side surface of the main ring, the outer circumference of the connecting ring and the outer circumference of the first sealing lip and folded towards the direction of the rotating shaft, and the first sealing lip is always in close contact with the rotating shaft under the folding elasticity of the first spring piece; the second spring piece is arranged along the inner circumference of the connecting ring and the outer circumference of the second sealing lip and expands towards the direction of the rotating shaft, and the second sealing lip is always in close contact with the rotating shaft under the expansion elasticity of the second spring piece.
An annular first bulge is arranged on the outer circumference of the fixing ring.
And the inner circumference of the fixing ring is provided with a second annular bulge.
Compared with the prior art, the axial multi-lip rotary supporting and sealing device provided by the invention has the following advantages: 1. the present invention has a simple structure, and sealing is achieved by the sealing between the claw-type seal portion and the rotating shaft, that is, the contact of the inner circumferences of the first seal lip and the second seal lip with the rotating shaft. 2. The supporting part is fixed through interference fit between the fixing ring and the end cover, and meanwhile, the whole axial multi-lip rotary supporting and sealing device can be of a whole-circle structure or an open structure, so that the axial multi-lip rotary supporting and sealing device is convenient to install and maintain. 3. According to the invention, the spring piece is embedded in the sealing lip, so that the sealing lip is always kept in a close-fitting state, and even if the sealing lip is worn after long-time use, the first sealing lip and the second sealing lip are always in close contact with the rotating shaft due to the expansion or contraction elasticity of the spring piece, thereby ensuring the sealing effect.
Drawings
FIG. 1 is a schematic view of the overall structure of an axial multi-lip rotary support sealing device provided by the invention;
In the figure: 1-end cover, 2-rotating shaft, 3-sealing cavity, 4-fixing ring, 5-main ring, 6-connecting ring, 7-first sealing lip, 8-second sealing lip, 9-dust-proof lip, 10-first spring piece, 11-second spring piece, 12-first bulge and 13-second bulge.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The axial multi-lip rotary supporting and sealing device provided by the invention is of an integral structure as shown in figure 1, is arranged between a rotating shaft 2 and an end cover 1, the rotating shaft is arranged in the end cover and extends out of the end cover, a gap between the inner part of the end cover and the rotating shaft is a sealing cavity 3, the axial multi-lip rotary supporting and sealing device is of a full-circle structure or an opening structure and consists of a supporting part and a sealing part which are connected into a whole, and the supporting part is fixedly connected with the end cover. The supporting part includes along the solid fixed ring 4 of axial setting and along the main ring 5 of radial setting, the main ring is located the recess that sets up on the end cover lateral wall, and solid fixed ring's one end is connected as an organic wholely with the main ring, and gu fixed ring is deepened to the inside of end cover by the recess, gu fixed ring installs in the inside of end cover through interference fit, gu be provided with annular first arch 12 on fixed ring's the outer circumference, gu be provided with annular second arch 13 on fixed ring's the interior circumference. The fixing ring ensures interference fit and fastening with the mounting hole in the end cover through the first protrusion and the second protrusion.
The cross-section of sealing portion is "claw" style of calligraphy, including the go-between 6 that sets up along the axial and the first seal lip 7, the second seal lip 8 that set up towards seal chamber one side slope and the dustproof lip 9 that sets up towards external one side slope, four formula structures as an organic whole, wherein the one end of go-between is connected with the main ring, and the outer circumference of go-between is laminated mutually with the interior circumference of end cover, and the interior circumference of first seal lip and second seal lip all contacts sealedly with the axis of rotation. The first spring piece 10 is arranged on the first sealing lip, the first spring piece is annular, the section of the first spring piece is S-shaped, the first spring piece is arranged along the inner circumference of the fixing ring, the side surface of the main ring, the outer circumference of the connecting ring and the outer circumference of the first sealing lip and folded towards the direction of the rotating shaft, and the first sealing lip is always in close contact with the rotating shaft under the folding elasticity of the first spring piece. The second spring piece 11 is arranged on the second sealing lip, the whole second spring piece is annular, the section of the second spring piece is V-shaped, the second spring piece is arranged along the inner circumference of the connecting ring and the outer circumference of the second sealing lip and expands towards the direction of the rotating shaft, and the second sealing lip is always in close contact with the rotating shaft under the expansion elasticity of the second spring piece.
Claims (3)
1. The utility model provides an axial many lips gyration support sealing device, installs between axis of rotation and end cover, the axis of rotation is installed in the end cover and is stretched out from the end cover, and the space between the inside and axis of rotation of end cover is sealed chamber, its characterized in that: the axial multi-lip rotary supporting and sealing device is of a whole-ring structure or an opening structure and consists of a supporting part and a sealing part which are connected into a whole, the supporting part is fixedly connected with the end cover, the supporting part comprises a fixing ring arranged along the axial direction and a main ring arranged along the radial direction, the main ring is positioned in a groove arranged on the side wall of the end cover, one end of the fixing ring is connected with the main ring into a whole, the fixing ring extends into the end cover from the groove, and the fixing ring is arranged in the end cover in an interference fit manner;
The section of the sealing part is in a claw shape and comprises a connecting ring arranged along the axial direction, a first sealing lip and a second sealing lip which are arranged towards one side of the sealing cavity in an inclined mode, and a dust-proof lip which is arranged towards one side of the outside in an inclined mode, wherein the first sealing lip and the second sealing lip are of an integrated structure, one end of the connecting ring is connected with the main ring, the outer circumference of the connecting ring is attached to the inner circumference of the end cover, and the inner circumferences of the first sealing lip and the second sealing lip are in contact sealing with the rotating shaft; the first spring piece is arranged along the inner circumference of the fixed ring, the side surface of the main ring, the outer circumference of the connecting ring and the outer circumference of the first sealing lip and folded towards the direction of the rotating shaft, and the first sealing lip is always in close contact with the rotating shaft under the folding elasticity of the first spring piece; the second spring piece is arranged along the inner circumference of the connecting ring and the outer circumference of the second sealing lip and expands towards the direction of the rotating shaft, and the second sealing lip is always in close contact with the rotating shaft under the expansion elasticity of the second spring piece.
2. the axial multi-lip swivel support seal arrangement of claim 1, wherein: an annular first bulge is arranged on the outer circumference of the fixing ring.
3. The axial multi-lip swivel support seal arrangement of claim 1, wherein: and the inner circumference of the fixing ring is provided with a second annular bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787844.8A CN110566670A (en) | 2019-08-26 | 2019-08-26 | Axial multi-lip rotary supporting sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787844.8A CN110566670A (en) | 2019-08-26 | 2019-08-26 | Axial multi-lip rotary supporting sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566670A true CN110566670A (en) | 2019-12-13 |
Family
ID=68776049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910787844.8A Pending CN110566670A (en) | 2019-08-26 | 2019-08-26 | Axial multi-lip rotary supporting sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566670A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111111857A (en) * | 2019-12-31 | 2020-05-08 | 武汉新置密封科技有限公司 | Sealing device for uneven box body of ball mill |
| CN111894992A (en) * | 2020-08-06 | 2020-11-06 | 中国铁建重工集团股份有限公司 | Engineering machine, main bearing and sealing element |
| CN111946826A (en) * | 2020-08-25 | 2020-11-17 | 珠海格力电器股份有限公司 | Oil seal device and transmission |
| CN113606339A (en) * | 2021-07-30 | 2021-11-05 | 江门市鑫辉特种密封科技有限公司 | Combined labyrinth sealing device |
| WO2023231519A1 (en) * | 2022-06-01 | 2023-12-07 | 广东威灵电机制造有限公司 | Casing assembly, electric fan, and floor scrubber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741165A (en) * | 2008-11-06 | 2010-06-16 | 北京威塞欧机械技术有限公司 | Soymilk grinder motor shaft seal |
| CN105757248A (en) * | 2014-12-18 | 2016-07-13 | 北京橡胶工业研究设计院 | Large composite-structure sealing element for rotating shaft |
| CN206257278U (en) * | 2016-10-20 | 2017-06-16 | 刘丽霞 | A kind of row's fat main shaft sealing device certainly |
-
2019
- 2019-08-26 CN CN201910787844.8A patent/CN110566670A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741165A (en) * | 2008-11-06 | 2010-06-16 | 北京威塞欧机械技术有限公司 | Soymilk grinder motor shaft seal |
| CN105757248A (en) * | 2014-12-18 | 2016-07-13 | 北京橡胶工业研究设计院 | Large composite-structure sealing element for rotating shaft |
| CN206257278U (en) * | 2016-10-20 | 2017-06-16 | 刘丽霞 | A kind of row's fat main shaft sealing device certainly |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111111857A (en) * | 2019-12-31 | 2020-05-08 | 武汉新置密封科技有限公司 | Sealing device for uneven box body of ball mill |
| CN111111857B (en) * | 2019-12-31 | 2021-08-31 | 武汉新置密封科技有限公司 | Sealing device for uneven box body of ball mill |
| CN111894992A (en) * | 2020-08-06 | 2020-11-06 | 中国铁建重工集团股份有限公司 | Engineering machine, main bearing and sealing element |
| CN111946826A (en) * | 2020-08-25 | 2020-11-17 | 珠海格力电器股份有限公司 | Oil seal device and transmission |
| CN113606339A (en) * | 2021-07-30 | 2021-11-05 | 江门市鑫辉特种密封科技有限公司 | Combined labyrinth sealing device |
| WO2023231519A1 (en) * | 2022-06-01 | 2023-12-07 | 广东威灵电机制造有限公司 | Casing assembly, electric fan, and floor scrubber |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |