CN211778971U - Anti-deflection horseshoe-shaped sealing device - Google Patents
Anti-deflection horseshoe-shaped sealing device Download PDFInfo
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- CN211778971U CN211778971U CN202020128922.1U CN202020128922U CN211778971U CN 211778971 U CN211778971 U CN 211778971U CN 202020128922 U CN202020128922 U CN 202020128922U CN 211778971 U CN211778971 U CN 211778971U
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Abstract
The utility model provides a deflection-resisting horseshoe-shaped sealing device, which consists of a pressing block, a fixing bolt and more than one sealing ring, wherein the cross section of each sealing ring is horseshoe-shaped and consists of a connecting part and a sealing part, the pressing block is wholly wrapped on the sealing part, and the fixing bolt passes through the pressing block and the sealing part and is fixed on the side wall of a box body; the sealing part comprises an anti-deflection ring, a sealing lip and a dust-proof lip, the outer circular surface of the anti-deflection ring is fixed with the connecting part, the inner circular surface of the anti-deflection ring is fixed with the outer circular surface of the sealing lip, and the inner circular surface of the sealing lip is abutted against the rotating shaft and is in contact sealing with the rotating shaft; the inner circle surface of the dust lip is connected to the side surface of the sealing lip, and the inner circle surface of the dust lip is abutted against the rotating shaft and is in contact sealing with the rotating shaft. The device can carry out better sealing to the cavity that contains lubricating grease between rotation axis and the box, can also deal with the axial beat and the radial beat that the rotatory in-process of rotation axis appears simultaneously, guarantees the sealed effect under the beat operating mode.
Description
Technical Field
The utility model provides a sealing device especially provides a shape of a hoof sealing device that is arranged in the gear box hole to seal and have anti beat function, 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.
In addition, due to the fact that the rotating shaft is not manufactured and installed normally or due to a specific rotating mode, the rotating shaft may have large-amplitude deflection in the radial direction in the rotating process, and under the condition, the traditional labyrinth sealing device cannot be used, so that not only the sealing effect cannot be achieved, but also the movable ring and the fixed ring may be damaged. Therefore, the sealing device which has excellent sealing performance and is suitable for the deflection working condition is provided, and the problem to be solved in the field is solved.
Disclosure of Invention
The utility model discloses to the defect that exists among the background art, provide an anti beat horseshoe-shaped sealing device, the device can carry out better sealing to the cavity that contains lubricating grease between rotation axis and the box, can also deal with the axial beat and the radial beat that appear in the rotatory in-process of rotation axis simultaneously, guarantees the sealed effect under the beat operating mode.
Realize the utility model discloses the technical scheme that above-mentioned purpose adopted does:
the anti-deflection horseshoe-shaped sealing device is arranged between a rotating shaft and a box body, the rotating shaft is arranged in the box body and extends out of the box body, a gap between the interior of the box body and the rotating shaft is a sealing cavity, the anti-deflection horseshoe-shaped sealing device is composed of a pressing block, a fixing bolt and more than one sealing ring, the cross section of each sealing ring is horseshoe-shaped and is composed of a connecting part and a sealing part, the more than one sealing rings are mutually stacked, the side wall of the sealing part in the innermost sealing ring is attached to the side wall of the box body, the pressing block is integrally wrapped on the sealing part, and the fixing bolt penetrates through the pressing block and the sealing part and is fixed on the side wall of the box body, so;
the sealing part comprises an anti-deflection ring, a sealing lip and a dust-proof lip, the three are of an integrated structure and are all obliquely arranged, the outer circular surface of the anti-deflection ring is fixed with the connecting part, the inner circular surface of the anti-deflection ring is fixed with the outer circular surface of the sealing lip, the two are fixedly connected and are in a <' > shaped structure, and the inner circular surface of the sealing lip is abutted against the rotating shaft and is in contact sealing with the rotating shaft; the inner circle surface of the dust lip is connected to the side surface of the sealing lip, the dust lip and the sealing lip are fixedly connected to form an 'in' -shaped structure, and the inner circle surface of the dust lip is abutted against the rotating shaft and is in contact sealing with the rotating shaft.
The sealing part is internally provided with an annular spring piece, the spring piece is fixed on the inner side surfaces of the anti-deflection ring and the sealing lip, the cross section of the spring piece is in a <' > shaped structure, and the spring piece expands outwards to enable the sealing lip to keep a close-fitting state with the rotating shaft.
Compared with the prior art, the utility model provides an anti beat horseshoe-shaped lip sealing device has following advantage: 1. the utility model discloses the equal slope of seal lip and the dust lip that sets up in the well seal part sets up, both all with rotation axis contact seal and keep hugging closely with the rotation axis, even seal lip and dust lip produced wearing and tearing after long-term use, because be provided with the spring leaf on the medial surface of anti yaw ring sum seal lip, the spring leaf expands outwards and makes seal lip and dust lip keep the state of hugging closely with the rotation axis all the time. 2. When radial deflection occurs in the rotating process of the rotating shaft, the anti-deflection ring which is obliquely arranged can deform, the anti-deflection ring on one side which is pressed is folded, and the anti-deflection ring on the opposite side is expanded under the action of the spring piece, so that the sealing lip and the dust lip are always kept in a close-fitting state with the rotating shaft. 3. When the rotating shaft has axial deflection in the rotating process, the sealing lip and the dust lip are in contact sealing with the shaft surface of the rotating shaft, so that the sealing performance of the rotating shaft cannot be influenced during the axial deflection.
Drawings
Fig. 1 is a schematic view of the overall structure of a horseshoe-shaped seal device resistant to deflection provided in example 1;
fig. 2 is a schematic view of the overall structure of the anti-deflection horseshoe-shaped sealing device provided in embodiment 2;
in the figure: the anti-deflection device comprises a box body 1, a rotating shaft 2, a sealing cavity 3, a pressing block 4, a fixing bolt 5, a connecting part 6, an anti-deflection ring 7, a sealing lip 8, a dust lip 9 and a spring piece 10.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1
The structure of the anti-deflection horseshoe-shaped sealing device provided by the embodiment is as shown in fig. 1, and is installed between a rotating shaft 2 and a box body 1, the rotating shaft is installed in the box body and extends out of the box body, a gap between the inside of the box body and the rotating shaft is a sealing cavity 3, the anti-deflection horseshoe-shaped sealing device is composed of a pressing block 4, a fixing bolt 5 and a sealing ring, the cross section of the sealing ring is shaped like a horseshoe and is composed of a connecting part 6 and a sealing part, the side wall of the sealing part is attached to the side wall of the box body, the pressing block is integrally wrapped on the sealing part, and the fixing bolt penetrates through the pressing block and the sealing part and. The sealing part comprises an anti-deflection ring 7, a sealing lip 8 and a dust-proof lip 9, the three are of an integrated structure and are all obliquely arranged, the outer circular surface of the anti-deflection ring is fixed with the connecting part, the inner circular surface of the anti-deflection ring is fixed with the outer circular surface of the sealing lip, the anti-deflection ring and the sealing lip are fixedly connected and are in a <' shape structure, and the inner circular surface of the sealing lip is abutted against the rotating shaft and is in contact sealing with the rotating shaft; the inner circle surface of the dust lip is connected to the side surface of the sealing lip, the dust lip and the sealing lip are fixedly connected to form an 'in' -shaped structure, and the inner circle surface of the dust lip is abutted against the rotating shaft and is in contact sealing with the rotating shaft. The sealing part is internally provided with an annular spring piece 10 which is attached and fixed on the inner side surfaces of the anti-deflection ring and the sealing lip, the section of the spring piece is of a < "> shaped structure, and the spring piece expands outwards to ensure that the sealing lip and the rotating shaft keep a close-fitting state.
Example 2
The structure of the anti-deflection horseshoe-shaped sealing device provided by the embodiment is shown in fig. 2, the main structure of the anti-deflection horseshoe-shaped sealing device is the same as that of the anti-deflection horseshoe-shaped sealing device provided by the embodiment 1, the difference is that two sealing rings are arranged in the embodiment, the two sealing rings are mutually stacked, the side wall of the sealing part in the innermost sealing ring is attached to the side wall of the box body, the pressing block is integrally wrapped on the sealing part, and the fixing bolt penetrates through the pressing block and the sealing part and is fixed on the side wall of.
Claims (2)
1. The utility model provides an anti beat horseshoe-shaped sealing device, installs between rotation axis and box, the rotation axis is installed in the box and is stretched out from the box, and the space between the box inside and the rotation axis is sealed chamber, its characterized in that: the anti-deflection horseshoe-shaped sealing device comprises a pressing block, a fixing bolt and more than one sealing ring, the cross section of each sealing ring is horseshoe-shaped and comprises a connecting part and a sealing part, the more than one sealing rings are mutually stacked, the side wall of the sealing part in the innermost sealing ring is attached to the side wall of the box body, the pressing block is integrally wrapped on the sealing part, and the fixing bolt penetrates through the pressing block and the sealing part and is fixed on the side wall of the box body, so that the more than one sealing rings are fixed;
the sealing part comprises an anti-deflection ring, a sealing lip and a dust-proof lip, the three are of an integrated structure and are all obliquely arranged, the outer circular surface of the anti-deflection ring is fixed with the connecting part, the inner circular surface of the anti-deflection ring is fixed with the outer circular surface of the sealing lip, the two are fixedly connected and are in a <' > shaped structure, and the inner circular surface of the sealing lip is abutted against the rotating shaft and is in contact sealing with the rotating shaft; the inner circle surface of the dust lip is connected to the side surface of the sealing lip, the dust lip and the sealing lip are fixedly connected to form an 'in' -shaped structure, and the inner circle surface of the dust lip is abutted against the rotating shaft and is in contact sealing with the rotating shaft.
2. The anti-yaw horseshoe seal according to claim 1, characterized by: the sealing part is internally provided with an annular spring piece, the spring piece is fixed on the inner side surfaces of the anti-deflection ring and the sealing lip, the cross section of the spring piece is in a <' > shaped structure, and the spring piece expands outwards to enable the sealing lip to keep a close-fitting state with the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020128922.1U CN211778971U (en) | 2020-01-20 | 2020-01-20 | Anti-deflection horseshoe-shaped sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020128922.1U CN211778971U (en) | 2020-01-20 | 2020-01-20 | Anti-deflection horseshoe-shaped sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211778971U true CN211778971U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020128922.1U Active CN211778971U (en) | 2020-01-20 | 2020-01-20 | Anti-deflection horseshoe-shaped sealing device |
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| CN (1) | CN211778971U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022112880A1 (en) * | 2020-11-30 | 2022-06-02 | Carco - Precision Rubber Products S.P.A. | Sealing gasket for rotary shafts |
-
2020
- 2020-01-20 CN CN202020128922.1U patent/CN211778971U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022112880A1 (en) * | 2020-11-30 | 2022-06-02 | Carco - Precision Rubber Products S.P.A. | Sealing gasket for rotary shafts |
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