CN210890089U - Radial multi-lip supporting oil seal device - Google Patents
Radial multi-lip supporting oil seal device Download PDFInfo
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- CN210890089U CN210890089U CN201921386936.7U CN201921386936U CN210890089U CN 210890089 U CN210890089 U CN 210890089U CN 201921386936 U CN201921386936 U CN 201921386936U CN 210890089 U CN210890089 U CN 210890089U
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- lip
- end cover
- oil seal
- rotation
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Abstract
The utility model provides a radial many lips support oil seal 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, radial many lips support oil seal device is whole circle formula structure or open type structure, and its cross-section is "claw" style of calligraphy, include along the go-between of axial setting and the first seal lip that sets up towards sealed chamber lopsidedness, second seal lip and the dustproof lip that sets up towards external lopsidedness, four formula structures as an organic whole, wherein the go-between is fixed in the inside of end cover through the interference fit installation, 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 utility model provides a sealing device especially provides a sealing device who is arranged in the axis of rotation to seal the axis of rotation, belongs to mechanical seal technical field.
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 utility model discloses the needle provides a radial many lips support oil blanket device, and 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.
Realize the utility model discloses the technical scheme that above-mentioned purpose adopted does:
a radial multi-lip supporting oil seal 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 gap between the inside of the end cover and the rotating shaft is a sealing cavity, the radial multi-lip supporting oil seal device is of a whole-circle structure or an opening structure, the cross section of the radial multi-lip supporting oil seal device is in a claw shape, the radial multi-lip supporting oil seal device comprises a connecting ring arranged along the axial direction, a first sealing lip and a second sealing lip which are obliquely arranged towards one side of the sealing cavity, and a dust-proof lip which is obliquely arranged towards one side of the outside, the connecting ring and the dust-proof lip are of an integrated structure, the connecting ring is fixedly arranged in the end cover through interference fit; the first spring piece is arranged along the inner circumference of the connecting ring and the outer circumference of the first sealing lip and expands towards the direction of the rotating shaft, and the first sealing lip is always in close contact with the rotating shaft under the expansion 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.
And a metal skeleton is arranged in the connecting ring.
The radial multi-lip supporting oil seal device is of an open structure, and the framework is provided with a bolt and a slot structure which are matched at the opening.
Compared with the prior art, the utility model provides a radial many lips support oil blanket device has following advantage: 1. the utility model discloses simple structure, through the sealed between claw type sealing portion and the axis of rotation, the interior circumference of first seal lip and second seal lip is promptly and the contact of axis of rotation is realized sealedly. 2. The utility model discloses well go-between is fixed in the inside of end cover through the interference fit installation, and whole radial many lips supports oil blanket device simultaneously and can set up to whole circle formula structure or open type structure, consequently the installation with maintain the convenience. 3. The utility model discloses in there is the spring leaf embedded in the seal lip, the spring leaf makes the seal lip remain throughout and hugs closely the state, even if lead to the seal lip to produce wearing and tearing through long-time use, because the expansion elasticity of spring leaf also can make first/two seal lips all the time with axis of rotation in close contact with to guarantee sealed effect.
Drawings
Fig. 1 is a schematic view of the overall structure of the radial multi-lip supporting oil seal device provided by the present invention;
in the figure: the anti-dust sealing structure comprises an end cover 1, a rotating shaft 2, a sealing cavity 3, a connecting ring 4, a first sealing lip 5, a second sealing lip 6, a dust-proof lip 7, a first spring piece 8, a second spring piece 9, a framework 10 and a bolt 11.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a radial many lips support oil seal device's overall structure is shown in figure 1, installs between axis of rotation 2 and end cover 1, 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 the axis of rotation of end cover is seal chamber 3, radial many lips support oil seal device is whole circle formula structure or open type structure, and its cross-section is "claw" style of calligraphy, include go-between 4 and the first seal lip 5, the second seal lip 6 that set up towards seal chamber lopsidedness along the axial setting and the dust lip 7 that sets up towards external lopsidedness, four formula structures as an organic whole, wherein the go-between is fixed in the inside of end cover through the interference fit installation, the inside of go-between is provided with the skeleton 10 of metal material. In this embodiment, the radial multi-lip oil supporting package is an open structure, and the frame 10 is provided with a plug 11 and a slot structure at the opening.
The inner circumferences of the first sealing lip and the second sealing lip are in contact sealing with the rotating shaft; the first sealing lip is provided with a first spring piece 8, the first spring piece is integrally annular, the section of the first spring piece is V-shaped, the first spring piece is arranged along the inner circumference of the connecting ring and the outer circumference of the first sealing lip and expands towards the direction of the rotating shaft, and the first sealing lip is always in close contact with the rotating shaft under the expansion elasticity of the first spring piece; the second spring piece 9 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 a radial many lips support oil seal, 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 seal chamber, its characterized in that: the radial multi-lip supporting oil seal device is of a full-circle structure or an open structure, the cross section of the radial multi-lip supporting oil seal device is in a claw shape, the radial multi-lip supporting oil seal device comprises a connecting ring arranged along the axial direction, a first sealing lip and a second sealing lip which are obliquely arranged towards one side of a sealing cavity, and a dust-proof lip which is obliquely arranged towards one side of the outside, the connecting ring, the first sealing lip and the second sealing lip are of an integrated structure, the connecting ring is fixedly arranged in the end cover through interference fit, and the inner circumferences of the first sealing lip and the second sealing; the first spring piece is arranged along the inner circumference of the connecting ring and the outer circumference of the first sealing lip and expands towards the direction of the rotating shaft, and the first sealing lip is always in close contact with the rotating shaft under the expansion 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 radial multi-lip support oil seal device according to claim 1, wherein: and a metal skeleton is arranged in the connecting ring.
3. The radial multi-lip support oil seal device according to claim 2, wherein: the radial multi-lip supporting oil seal device is of an open structure, and the framework is provided with a bolt and a slot structure which are matched at the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921386936.7U CN210890089U (en) | 2019-08-26 | 2019-08-26 | Radial multi-lip supporting oil seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921386936.7U CN210890089U (en) | 2019-08-26 | 2019-08-26 | Radial multi-lip supporting oil seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210890089U true CN210890089U (en) | 2020-06-30 |
Family
ID=71313986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921386936.7U Active CN210890089U (en) | 2019-08-26 | 2019-08-26 | Radial multi-lip supporting oil seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210890089U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645357A (en) * | 2019-08-26 | 2020-01-03 | 江门市鑫辉特种密封科技有限公司 | Radial multi-lip supporting oil seal device |
-
2019
- 2019-08-26 CN CN201921386936.7U patent/CN210890089U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645357A (en) * | 2019-08-26 | 2020-01-03 | 江门市鑫辉特种密封科技有限公司 | Radial multi-lip supporting oil seal device |
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Address after: 529000 Building 1, No. 289, Lianhai Road, Jianghai District, Jiangmen City, Guangdong Province (multiple photos of one site) Patentee after: Guangdong Xinhui Technology Co.,Ltd. Address before: 529000 Ground Floor, No. 114, Longxi Road, High tech Development Zone, Jianghai District, Jiangmen City, Guangdong Province Patentee before: JIANGMEN XINHUI SEALING TECHNOLOGY Co.,Ltd. |