CN218267241U - Self-positioning oil seal device - Google Patents
Self-positioning oil seal device Download PDFInfo
- Publication number
- CN218267241U CN218267241U CN202221936104.XU CN202221936104U CN218267241U CN 218267241 U CN218267241 U CN 218267241U CN 202221936104 U CN202221936104 U CN 202221936104U CN 218267241 U CN218267241 U CN 218267241U
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- connecting ring
- lip
- sealing
- oil seal
- rotating shaft
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Abstract
The utility model provides a from location type oil seal device, include: the fixed step is arranged along the radial direction and is fixed on the side wall of the equipment end cover; a connection ring axially disposed and connected to an inner circumference of the fixing step; sealing lips which are all inclined towards one side of the sealing cavity; dust lips, each inclined outwardly; the limiting step is arranged on the inner circumference of the connecting ring and is positioned between the sealing lip and the dust lip, and the limiting step is arranged along the radial direction; and the hoop member is positioned on the outer circumference of the connecting ring and symmetrically distributed on two sides of the limit step, the hoop member hoops the connecting ring to enable the limit step to be in close contact with the rotating shaft, and the sealing lip and the dust lip are in interference fit with the rotating shaft, and the inner edge of the sealing lip and the inner edge of the dust lip are in close contact with the rotating shaft and are sealed. The oil seal device has the advantages of good sealing performance, good deflection resistance, convenience in installation and long service life.
Description
Technical Field
The utility model relates to a mechanical seal technical field especially relates to a self-align type oil seal device.
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 oil 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 oil 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.
SUMMERY OF THE UTILITY MODEL
The utility model provides a from location type oil seal device, this oil seal device sealing performance is good, and anti yaw nature is good, simple to operate and long service life.
Realize the utility model discloses the technical scheme who takes of above-mentioned purpose does:
the utility model provides a from location type oil seal device installs between equipment end cover and rotation axis, and the rotation axis passes the equipment end cover, and both relative rotation and clearance between the two are sealed chamber, from location type oil seal device wholly be the annular and overlap and establish on the rotation axis, include:
the fixed step is arranged along the radial direction and is fixed on the side wall of the equipment end cover;
a connection ring axially disposed and connected to an inner circumference of the fixing step;
the sealing lips are arranged at more than one positions and are inclined towards one side of the sealing cavity, and the sealing lips are uniformly distributed on the inner circumference of the connecting ring and are close to the sealing cavity;
the dustproof lips are arranged at more than one and are inclined outwards, and the dustproof lips are uniformly distributed on the inner circumference of the connecting ring and far away from the sealing cavity;
the limiting step is arranged on the inner circumference of the connecting ring and is positioned between the sealing lip and the dust lip, and the limiting step is arranged along the radial direction;
the fixed step, the connecting ring, the sealing lip, the dust lip and the limiting step are connected into an integral structure;
and the hoop member is positioned on the outer circumference of the connecting ring and symmetrically distributed on two sides of the limit step, the hoop member hoops the connecting ring to enable the limit step to be in close contact with the rotating shaft, and the sealing lip and the dust lip are in interference fit with the rotating shaft, and the inner edge of the sealing lip and the inner edge of the dust lip are in close contact with the rotating shaft and are sealed.
The contact area of the limiting step and the rotating shaft is larger than that of the sealing lip, the dust lip and the rotating shaft.
And L-shaped metal frameworks are arranged in the fixed step and the connecting ring, and the metal frameworks are annular as a whole.
The oil seal device is of an open structure, and the metal framework is provided with a matched bolt and slot structure at the opening.
The clamp piece is a clamp, an annular clamp groove is distributed on the outer circumference of the connecting ring, and the clamp is installed in the clamp groove.
The tightening piece is a tightening spring, annular spring grooves are distributed in the outer circumference of the connecting ring, and the tightening spring is installed in the spring grooves.
The fixed step is fixed on the side wall of the equipment end cover through a pressing plate and a bolt.
Compared with the prior art, the utility model provides a from location type oil seal device has following advantage: 1. the utility model discloses in the self-align type oil seal device that provides be provided with spacing step between seal lip and dust lip, spacing step supports between go-between and rotation axis, guarantees even interference fit between the seal lip of its both sides and dust lip and the rotation axis, avoids the quick wearing and tearing of seal lip and dust lip or seals not tight to guarantee sealed effect, and oil seal device's long service life.
2. The utility model discloses well spacing step and metal framework can fix a position and supporting role to oil blanket device, and anti beat is effectual, further improves sealed effect.
3. The utility model discloses in the oil blanket device that provides be open type structure, whole simple to operate.
4. The utility model discloses in cramp whole oil blanket device on the rotation axis through the clamp, be fixed in the equipment end cover through the bolt with the location step simultaneously, whole oil blanket device simple to operate, firm.
Drawings
Fig. 1 is a schematic overall structure diagram of a self-positioning oil seal device provided by the present invention;
in the figure: 1-equipment end cover, 2-rotating shaft, 3-sealing cavity, 4-fixing step, 5-connecting ring, 6-sealing lip, 7-dust-proof lip, 8-limiting step, 9-metal framework, 10-pressing plate, 11-bolt, 12-clamp and 13-clamp groove.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following embodiments.
The structure of the self-positioning oil seal device provided by the embodiment is shown in fig. 1, and is installed between an equipment end cover 1 and a rotating shaft 2, the rotating shaft penetrates through the equipment end cover, the equipment end cover and the rotating shaft rotate relatively, a gap between the equipment end cover and the rotating shaft is a seal cavity 3, and the self-positioning oil seal device is integrally annular and sleeved on the rotating shaft to seal the seal cavity.
The self-positioning oil seal device in the embodiment comprises a fixed step 4, a connecting ring 5, a sealing lip 6, a dust lip 7, a limiting step 8, a clamping piece and a metal framework 9.
Specifically, the fixed step, the connecting ring, the sealing lip, the dust-proof lip and the limiting step are connected into an integral structure, wherein the fixed step is arranged along the radial direction and is axially arranged and connected to the inner circumference of the fixed step, the metal framework is arranged in the fixed step and the connecting ring and is matched with the connecting ring and the fixed step in connection shape, namely the cross section of the metal framework is L-shaped, the metal framework is integrally annular, the metal framework plays a supporting role on the fixed step and the connecting ring, and the deflection resistance of the fixed step and the connecting ring is improved. The fixed step is fixed on the side wall of the equipment end cover through a pressing plate 10 and a bolt 11, specifically, the pressing plate is located on one side of the fixed step, which is far away from the side wall of the end cover, and the bolt sequentially penetrates through the pressing plate, the fixed step and the end cover, so that the fixed step is fixed on the side wall of the equipment end cover.
The sealing lips are arranged at more than one and are inclined towards one side of the sealing cavity, the sealing lips are uniformly distributed on the inner circumference of the connecting ring and are close to the sealing cavity, and the number of the sealing lips is two in the embodiment; the dust lip distributes and has more than one and all outwards slope, the dust lip all sets up and keeps away from sealed chamber department on the interior circumference of go-between, and the dust lip is provided with one in this embodiment.
The clamping piece is arranged at more than one, the clamping piece is located on the outer circumference of the connecting ring and symmetrically distributed on two sides of the limiting step, and clamps the connecting ring, so that the sealing lip and the dust lip are in interference fit with the rotating shaft, and the inner edges of the sealing lip and the dust lip are in tight contact and sealed with the rotating shaft.
Therefore, in the embodiment, the limit step is arranged on the inner circumference of the connecting ring and located between the seal lip and the dust lip, the limit step is arranged along the radial direction, the contact area between the limit step and the rotating shaft is larger than that between the seal lip and the rotating shaft, the connecting ring is clamped by the clamping member, so that the limit step is in tight contact with the rotating shaft, the limit step is stably supported between the connecting ring and the rotating shaft, when the connecting ring is clamped by the clamping member on two sides above the limit step, the clamping member applies loads on the seal lip and the dust lip on two sides of the limit step, but due to the support of the limit step, when the loads on two sides are applied to a certain value, the loads cannot be continuously applied, so that uniform interference fit between the seal lip and the dust lip on two sides of the limit step and the rotating shaft is ensured, the problems of rapid wear or untight seal of the seal lip are avoided, and in addition, when the rotating shaft swings, due to the support and positioning effects of the limit step and the metal framework, the seal lip and the dust lip and the rotating shaft can be reduced, and the performance of the dust lip and the rotating shaft can be good anti-swing performance.
Specifically, the clamping member may be a clamp 12 or a clamping spring, and in this embodiment, the clamping member is a clamp, and correspondingly, annular clamp grooves 13 are distributed on the outer circumference of the connection ring, and the clamp is installed in the clamp grooves. If the tightening piece is a tightening spring, the outer circumference of the connecting ring is provided with an annular spring groove in a distributed manner, and the tightening spring is arranged in the spring groove.
In addition, the oil seal device is of an open structure, and the metal framework is provided with a bolt and a slot structure which are matched with each other at the opening, so that the integral installation of the oil seal device is facilitated.
Claims (7)
1. The utility model provides a from location type oil seal device, installs between equipment end cover and rotation axis, and the rotation axis passes through the equipment end cover, and both relative rotation and the clearance between the two are the seal chamber, its characterized in that: the whole annular of type oil blanket device of self-align overlaps and establishes on the rotation axis, includes:
the fixed step is arranged along the radial direction and is fixed on the side wall of the equipment end cover;
a connection ring axially disposed and connected to an inner circumference of the fixing step;
the sealing lips are arranged and inclined towards one side of the sealing cavity, and are distributed on the inner circumference of the connecting ring and close to the sealing cavity;
the dustproof lips are arranged at more than one and are inclined outwards, and the dustproof lips are uniformly distributed on the inner circumference of the connecting ring and far away from the sealing cavity;
the limiting step is arranged on the inner circumference of the connecting ring and is positioned between the sealing lip and the dust lip, and the limiting step is arranged along the radial direction;
the fixed step, the connecting ring, the sealing lip, the dust lip and the limiting step are connected into an integral structure;
and the hoop member is positioned on the outer circumference of the connecting ring and symmetrically distributed on two sides of the limit step, the hoop member hoops the connecting ring to enable the limit step to be in close contact with the rotating shaft, and the sealing lip and the dust lip are in interference fit with the rotating shaft, and the inner edge of the sealing lip and the inner edge of the dust lip are in close contact with the rotating shaft and are sealed.
2. The self-locating oil seal of claim 1, wherein: the contact area of the limiting step and the rotating shaft is larger than that of the sealing lip, the dust lip and the rotating shaft.
3. The self-locating oil seal device of claim 1, wherein: and L-shaped metal frameworks are arranged in the fixed step and the connecting ring, and the metal frameworks are annular as a whole.
4. The self-locating oil seal device of claim 3, wherein: the oil seal device is of an open structure, and the metal framework is provided with a matched bolt and slot structure at the opening.
5. The self-locating oil seal of claim 1, wherein: the clamp piece is the clamp, and the outer circumference of go-between distributes to be provided with and is annular clamp groove, and the clamp is installed in the clamp inslot.
6. The self-locating oil seal of claim 1, wherein: the tightening piece is a tightening spring, annular spring grooves are distributed in the outer circumference of the connecting ring, and the tightening spring is installed in the spring grooves.
7. The self-locating oil seal of claim 1, wherein: the fixed step is fixed on the side wall of the equipment end cover through a pressing plate and a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221936104.XU CN218267241U (en) | 2022-07-26 | 2022-07-26 | Self-positioning oil seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221936104.XU CN218267241U (en) | 2022-07-26 | 2022-07-26 | Self-positioning oil seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218267241U true CN218267241U (en) | 2023-01-10 |
Family
ID=84764306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221936104.XU Active CN218267241U (en) | 2022-07-26 | 2022-07-26 | Self-positioning oil seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218267241U (en) |
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2022
- 2022-07-26 CN CN202221936104.XU patent/CN218267241U/en active Active
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