CN213451685U - Pressure plate fixed type wave-shaped anti-deflection sealing device - Google Patents
Pressure plate fixed type wave-shaped anti-deflection sealing device Download PDFInfo
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- CN213451685U CN213451685U CN202021810192.XU CN202021810192U CN213451685U CN 213451685 U CN213451685 U CN 213451685U CN 202021810192 U CN202021810192 U CN 202021810192U CN 213451685 U CN213451685 U CN 213451685U
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Abstract
The utility model provides a fixed waveform of clamp plate anti-beat sealing device installs between rotation axis and box, and fixed waveform of clamp plate anti-beat sealing device includes L type clamp plate, fixing bolt, elasticity support ring, waveform elasticity go-between and dust lip and more than one seal lip, and the waveform elasticity go-between is located the left end of elasticity support ring, and the cross-section of waveform elasticity go-between is the wavy structure of "S" type, and seal lip and dust lip are located the most inboard of waveform elasticity go-between; the L-shaped pressing plate consists of a connecting plate attached to the side wall of the box body and a limiting plate arranged along the axial direction. 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 an anti beat sealing device of wave form that is arranged in the gear box hole to seal and have anti beat function to the hole, 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, roundness deviation or concentricity deviation exists, or due to a specific rotating mode, the rotating shaft can have large-amplitude deflection in the radial direction in the rotating process. 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, a fixed anti beat sealing device of wave form of clamp plate is provided, 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 utility model provides an anti beat sealing device of fixed waveform of clamp plate, 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 the seal chamber, the anti beat sealing device of fixed waveform of clamp plate includes L type clamp plate, fixing bolt, elasticity support ring, wave form elasticity go-between and dust lip and more than one seal lip, wherein elasticity support ring, wave form elasticity go-between and seal lip and dust lip are connected fixedly and are a whole, elasticity support ring cover is on the rotation axis and set up along the axial of rotation axis, wave form elasticity go-between is located the left end of elasticity support ring, and the cross-section of wave form elasticity go-between is the wavy structure of "S" type, seal lip and dust lip are located the most inboard of wave form elasticity go-between, wherein dust lip is located the, the sealing lip is positioned on one side close to the sealing cavity, the dust-proof lip is obliquely arranged towards the left, the inner circular surface of the dust-proof lip is propped against the rotating shaft and is in contact sealing with the rotating shaft, the sealing lip is obliquely arranged towards the right, and the inner circular surface of the sealing lip is propped against the rotating shaft and is in contact sealing with the rotating shaft; the L-shaped pressing plate is composed of a connecting plate attached to the side wall of the box body and a limiting plate arranged in the axial direction, the connecting plate is fixed on the box body through a fixing bolt, and the limiting plate in the L-shaped pressing plate is in contact with the elastic support ring and the waveform elastic connecting ring and covers the outer circumferences of the elastic support ring and the waveform elastic connecting ring, so that the waveform elastic connecting ring, the sealing lip and the dust lip are integrally pressed on the rotating shaft.
And elastic frameworks are arranged in the elastic support rings and the wave-shaped elastic connecting rings.
Annular spring pieces are arranged inside the dust-proof lip and the sealing lip, and the sections of the spring pieces are V-shaped or 7-shaped.
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 in the equal slope setting of seal lip and dust lip that 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 seal lip and dust lip's inside is provided with the spring leaf, the spring leaf expands outwards makes seal lip and dust lip keep the state of hugging closely with the rotation axis all the time. 2. When the rotating shaft generates radial deflection and axial deflection in the rotating process, the wave-shaped elastic connecting ring with the S-shaped section and the wavy structure can generate corresponding deformation to adapt to the deflection, so that the sealing effectiveness is ensured, and the irreversible deformation of the whole sealing device is prevented.
Drawings
Fig. 1 is a schematic view of the overall structure of a pressure plate fixed type waveform anti-deflection sealing device provided in embodiment 1;
FIG. 2 is a schematic view of the entire structure of a fixed-platen wave-shaped anti-deflection sealing device according to example 2;
in the figure: the device comprises a box body 1, a rotating shaft 2, a sealing cavity 3, a L-shaped pressing plate 4, a fixing bolt 5, an elastic framework 6, an elastic support ring 7, a fixing step 8, a wave-shaped elastic connecting ring 9, a dust-proof lip 10, a sealing lip 11 and a spring piece 12.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1
The fixed anti beat sealing device of waveform of clamp plate that this embodiment provided installs between rotation axis 2 and box 1 as shown in fig. 1, the rotation axis is installed and is stretched out in the box and follow the box, and the space between the inside and the rotation axis of box is sealed chamber 3, the fixed anti beat sealing device of waveform of clamp plate includes L type clamp plate 4, fixing bolt 5, elasticity support ring 7, waveform elasticity go-between ring 9 and dust lip 10 and seal lip 11, and wherein elasticity support ring, waveform elasticity go-between ring and seal lip are connected fixed as a whole with the dust lip, and the inside of elasticity support ring and waveform elasticity go-between ring is provided with elasticity skeleton 6. The elastic support ring is sleeved on the rotating shaft and arranged along the axial direction of the rotating shaft. The wave form elasticity go-between is located the left end of elasticity support ring, and the cross-section of wave form elasticity go-between is the wavy structure of "S" type, seal lip and dust lip are located the most inboard of wave form elasticity go-between, wherein the dust lip is located the one side of keeping away from the seal chamber, the seal lip is located the one side that is close to the seal chamber, the interior disc top that the dust lip set up and the dust lip towards left side slope is sealed on the rotation axis and with the rotation axis contact, the seal lip sets up and the interior disc top of seal lip is sealed on the rotation axis and with the rotation axis contact towards right side slope, the inside of dust lip and seal lip is provided with the spring leaf 12 that the annular cross-. The L-shaped pressing plate is composed of a connecting plate attached to the side wall of the box body and a limiting plate arranged in the axial direction, the connecting plate is fixed on the box body through a fixing bolt, and the limiting plate in the L-shaped pressing plate is in contact with the elastic support ring and the waveform elastic connecting ring and covers the outer circumferences of the elastic support ring and the waveform elastic connecting ring, so that the waveform elastic connecting ring, the sealing lip and the dust lip are integrally pressed on the rotating shaft.
Example 2
The structure of the pressure plate fixed type waveform anti-deflection sealing device provided by the embodiment is shown in fig. 2, and the main structure is the same as that of the embodiment 1, and the difference is that a dust lip 10 and two sealing lips 11 are arranged in the embodiment, the two sealing lips are adjacently arranged on the left and the right, a spring piece 12 with a 7-shaped section is arranged in each sealing lip, and the spring piece is partially positioned in an elastic supporting ring. Meanwhile, in order to enhance the connection stability in the embodiment, the right end of the elastic support ring is provided with a fixed step 8 along the radial direction, the fixed step is attached to and fixed on the side wall of the box body, and the L-shaped pressing plate covers the fixed step and fixes the fixed step on the box body through a fixing bolt.
Claims (3)
1. The utility model provides an anti beat sealing device of fixed waveform of clamp plate, 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 pressure plate fixed type waveform anti-deflection sealing device comprises an L-shaped pressure plate, a fixing bolt, an elastic support ring, a waveform elastic connecting ring, a dust-proof lip and more than one sealing lip, wherein the elastic support ring, the wave-shaped elastic connecting ring, the sealing lip and the dust lip are connected and fixed into a whole, the elastic support ring is sleeved on the rotating shaft and is arranged along the axial direction of the rotating shaft, the wave-shaped elastic connecting ring is positioned at the left end of the elastic support ring, the section of the wave-shaped elastic connecting ring is of an S-shaped wave-shaped structure, the sealing lip and the dust-proof lip are positioned at the innermost side of the wave-shaped elastic connecting ring, the dustproof lip is positioned on one side far away from the sealing cavity, the sealing lip is positioned on one side close to the sealing cavity, the dustproof lip is obliquely arranged towards the left, the inner circle surface of the dustproof lip is propped against the rotating shaft and is in contact sealing with the rotating shaft, the sealing lip is obliquely arranged towards the right, and the inner circle surface of the sealing lip is propped against the rotating shaft and is in contact sealing with the rotating shaft; the L-shaped pressing plate is composed of a connecting plate attached to the side wall of the box body and a limiting plate arranged in the axial direction, the connecting plate is fixed on the box body through a fixing bolt, and the limiting plate in the L-shaped pressing plate is in contact with the elastic support ring and the waveform elastic connecting ring and covers the outer circumferences of the elastic support ring and the waveform elastic connecting ring, so that the waveform elastic connecting ring, the sealing lip and the dust lip are integrally pressed on the rotating shaft.
2. The platen-fixed waveform anti-yaw seal of claim 1, wherein: and elastic frameworks are arranged in the elastic support rings and the wave-shaped elastic connecting rings.
3. The platen-fixed waveform anti-yaw seal of claim 1, wherein: annular spring pieces are arranged inside the dust-proof lip and the sealing lip, and the sections of the spring pieces are V-shaped or 7-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021810192.XU CN213451685U (en) | 2020-08-26 | 2020-08-26 | Pressure plate fixed type wave-shaped anti-deflection sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021810192.XU CN213451685U (en) | 2020-08-26 | 2020-08-26 | Pressure plate fixed type wave-shaped anti-deflection sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213451685U true CN213451685U (en) | 2021-06-15 |
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ID=76316084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021810192.XU Active CN213451685U (en) | 2020-08-26 | 2020-08-26 | Pressure plate fixed type wave-shaped anti-deflection sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213451685U (en) |
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2020
- 2020-08-26 CN CN202021810192.XU patent/CN213451685U/en active Active
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