CN216112077U - Plug-in contact sealing device for large gear ring - Google Patents
Plug-in contact sealing device for large gear ring Download PDFInfo
- Publication number
- CN216112077U CN216112077U CN202122208600.5U CN202122208600U CN216112077U CN 216112077 U CN216112077 U CN 216112077U CN 202122208600 U CN202122208600 U CN 202122208600U CN 216112077 U CN216112077 U CN 216112077U
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- sealing panel
- panel
- circular surface
- 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.)
- Active
Links
Images
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model provides a plug-in contact sealing device for a large gear ring, which is arranged between the large gear ring and a gear cover, the large gear ring is positioned in the gear cover, a gap between the inside of the gear cover and the large gear ring is a sealing cavity, the sealing device comprises a support ring, a movable ring, a sealing panel and a static ring, wherein the cross section of the supporting ring is in a shape like a Chinese character 'men' and the opening of the supporting ring faces the big gear ring and is fixed on the inner wall of the big gear ring, the outer circular surface of the moving ring is contacted with the supporting ring, the supporting ring is sleeved on the moving ring, the sealing panel consists of an inner sealing panel and an outer sealing panel, the inner sealing panel and the outer sealing panel are both in a ring shape, the utility model can better seal a cavity containing lubricating grease between the big gear ring and the gear cover, and when the large gear ring generates weak deflection, the sealing effect can still be ensured, the structure is simple, the installation is convenient, and the service life is long.
Description
Technical Field
The utility model belongs to the technical field of mechanical sealing, and particularly relates to a device for sealing a large gear ring.
Background
The large gear ring has mechanical rotation, so lubricating grease is required to guarantee lubrication of the large gear ring, abrasion of a gear is reduced, and in order to prevent grease leakage, the lubricating grease inside the large gear ring is usually sealed in a mode of gear ring sealing ring and felt sealing at present. However, the large gear ring can stretch and contract along with the kiln body due to thermal expansion, the stretching amount is more than +/-100 mm, the temperature of the gear ring sealing ring exceeds 100 ℃, and the roundness deviation of the gear ring sealing ring is influenced by thermal expansion and cold contraction, so that the sealing effect of the conventional sealing mode is poor, and the grease leakage sometimes occurs.
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 provides an insertion type contact sealing device for a large gear ring, which can better seal a cavity containing lubricating grease between the large gear ring and a gear cover, can still ensure the sealing effect when the large gear ring generates weak deflection, and has the advantages of simple structure, convenient installation and long service life.
The technical scheme adopted for realizing the above purpose of the utility model is as follows:
an insertion type contact sealing device for a large gear ring is arranged between the large gear ring and a gear cover, the large gear ring is positioned in the gear cover, a gap between the inside of the gear cover and the large gear ring is a sealing cavity, the sealing device comprises a support ring, a movable ring, a sealing panel and a static ring, the cross section of the support ring is in a 'door' shape, the opening of the support ring faces the large gear ring and is fixed on the inner wall of the large gear ring, the outer circular surface of the moving ring is in contact with the support ring, the support ring is sleeved on the moving ring, the sealing panel consists of an inner sealing panel and an outer sealing panel, the inner sealing panel and the outer sealing panel are both annular, the inner sealing panel and the outer sealing panel are both axially arranged and are positioned in the outer sealing panel, one ends of the inner sealing panel and the outer sealing panel are both inserted into slots arranged on the side wall of the moving ring, the other ends of the inner sealing panel and the outer sealing panel extend towards the direction of the stationary ring, and the moving ring, the support ring and the sealing panel are radially connected and fixed through a pressure plate and a bolt;
the static ring comprises a static connecting ring, an inner sealing ring and an outer sealing ring, the inner sealing ring and the outer sealing ring are axially arranged, the static connecting ring is radially fixed on the inner wall of the gear cover through a pressure plate and a bolt, the inner sealing ring and the outer sealing ring are connected to one side, close to the dynamic ring, of the static connecting ring and are of an integrated structure, the inner sealing ring and the outer sealing ring are inserted into a cavity between the inner sealing panel and the outer sealing panel, more than one inclined sealing lip is arranged on the inner circular surface of the inner sealing ring and the outer circular surface of the outer sealing ring, and the sealing lips are tightly attached to the outer circular surface of the inner sealing panel or the inner circular surface of the outer sealing panel to achieve contact sealing.
And the support ring is welded and fixed on the inner wall of the large gear ring.
The movable ring, the supporting ring and the sealing panel are radially connected and fixed through the pressing plate and two groups of bolts, wherein one group of bolts are radially connected and fixed with the movable ring and the supporting ring, and the other group of bolts are radially connected and fixed with the movable ring, the supporting ring and the sealing panel inserted into the movable ring.
And three sealing lips which incline towards the static connecting ring are arranged on the inner circular surface of the inner sealing ring and the outer circular surface of the outer sealing ring.
At least one sealing lip which inclines towards the moving ring is arranged at the edge of the inner circular surface of the inner sealing ring and the edge of the outer circular surface of the outer sealing ring.
Compared with the prior art, the plug-in contact sealing device for the large gear ring provided by the utility model has the following advantages: 1. the utility model has simple structure, the inner sealing ring and the outer sealing ring are inserted into the cavity between the inner sealing panel and the outer sealing panel, so that the sealing lip is in contact sealing with the sealing panel, and good sealing effect is realized through multiple sealing. 2. The inner sealing ring and the outer sealing ring are directly connected with the static connecting ring, so that an expansion force is generated between the sealing lip and the inner sealing panel or the outer sealing panel, the sealing effect is further enhanced, when the large gear ring rotates and generates weak axial deflection, the sealing lip can still be in close contact with the sealing panel and the sealing effect of the sealing device is ensured, and meanwhile, the anti-deflection performance of the inner sealing ring and the outer sealing ring is further improved due to the resilience characteristic of elastic materials of the inner sealing ring and the outer sealing ring. 3. The sealing lip is obliquely arranged and is in interference fit with the sealing panel, so that even if the sealing lip is abraded, the sealing lip is tightly attached to the sealing panel, meanwhile, the edge of the sealing panel is provided with the sealing lip which is inclined towards the movable ring, and the sealing lip which is inclined towards the static connecting ring forms a splayed shape, so that the sealing effect is further enhanced. 4. According to the utility model, the support ring is fixed on the large gear ring, so that the damage of the large gear ring caused by the contact of the bolt and the large gear ring can be avoided while the stability of the sealing process is ensured, the service lives of the sealing device and the large gear ring are prolonged, and the sealing effect is ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of an insertion type contact sealing device for a large ring gear provided in embodiment 1;
FIG. 2 is a schematic view of the overall structure of an insertion type contact sealing device for a large ring gear provided in embodiment 2;
in the figure: 1-gear cover, 2-big gear ring, 3-sealing cavity, 4-support ring, 5-moving ring, 6-outer sealing ring, 7-static connecting ring, 8-inner sealing panel, 9-inner sealing ring, 10-sealing lip, 11-bolt, 12-pressure plate and 13-outer sealing panel.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, the whole structure of the plug-in contact sealing device for a large gear ring provided in this embodiment is installed between a large gear ring 2 and a gear cover 1, the large gear ring is located inside the gear cover, a gap between the inside of the gear cover and the large gear ring is a sealing cavity 3, the sealing device includes a support ring 4, a movable ring 5, a sealing panel and a stationary ring, wherein the support ring has a cross section in a shape of a "door", an opening of the support ring faces the large gear ring and is fixed on an inner wall of the large gear ring by welding, an outer circular surface of the movable ring contacts with the support ring, the support ring is sleeved on the movable ring, the sealing panel is composed of an inner sealing panel 8 and an outer sealing panel 13, the inner sealing panel and the outer sealing panel are both annular, both are axially disposed, the inner sealing panel is located inside the outer sealing panel, one end of both are inserted into a slot disposed on a side wall of the movable ring, and the other end of both extend toward the stationary ring, the movable ring, the supporting ring and the sealing panel are radially connected and fixed through a pressing plate 12 and two groups of bolts 11, wherein one group of bolts are used for radially connecting and fixing the movable ring and the supporting ring, and the other group of bolts are used for radially connecting and fixing the movable ring, the supporting ring and the sealing panel inserted into the movable ring;
the static ring comprises a static connecting ring 7, an inner sealing ring 9 and an outer sealing ring 6 which are arranged along the axial direction, the static connecting ring is radially fixed on the inner wall of the gear cover through a pressure plate and a bolt, the inner sealing ring and the outer sealing ring are connected to one side, close to the dynamic ring, of the static connecting ring and are of an integrated structure, the inner sealing ring and the outer sealing ring are inserted into a cavity between the inner sealing panel and the outer sealing panel, three sealing lips 10 inclining towards the static connecting ring are arranged on the inner circular surface of the inner sealing ring and the outer circular surface of the outer sealing ring, and the sealing lips are tightly attached to the outer circular surface of the inner sealing panel or the inner circular surface of the outer sealing panel to achieve contact sealing.
Example 2
As shown in fig. 2, the overall structure of the plug-in type contact sealing device for a bull gear provided in this embodiment is the same as that of embodiment 1, except that a sealing lip inclined toward the rotating ring is provided at each of the edge of the inner circular surface of the inner sealing ring and the edge of the outer circular surface of the outer sealing ring.
Claims (5)
1. The utility model provides a bayonet contact seal device for bull gear, installs between bull gear and gear cover, the bull gear is located the inside of gear cover, and the space between the inside and the bull gear of gear cover is sealed chamber, its characterized in that: the sealing device comprises a support ring, a movable ring, a sealing panel and a static ring, wherein the cross section of the support ring is in a 'door' shape, the opening of the support ring faces the large gear ring and is fixed on the inner wall of the large gear ring, the outer circular surface of the movable ring is in contact with the support ring, the support ring is sleeved on the movable ring, the sealing panel consists of an inner sealing panel and an outer sealing panel, the inner sealing panel and the outer sealing panel are both annular, the inner sealing panel and the outer sealing panel are both axially arranged and are positioned in the outer sealing panel, one ends of the inner sealing panel and the outer sealing panel are both inserted into slots arranged on the side wall of the movable ring, the other ends of the inner sealing panel and the outer sealing panel extend towards the direction of the static ring, and the movable ring, the support ring and the sealing panel are radially connected and fixed through a pressing plate and a bolt;
the static ring comprises a static connecting ring, an inner sealing ring and an outer sealing ring, the inner sealing ring and the outer sealing ring are axially arranged, the static connecting ring is radially fixed on the inner wall of the gear cover through a pressure plate and a bolt, the inner sealing ring and the outer sealing ring are connected to one side, close to the dynamic ring, of the static connecting ring and are of an integrated structure, the inner sealing ring and the outer sealing ring are inserted into a cavity between the inner sealing panel and the outer sealing panel, more than one inclined sealing lip is arranged on the inner circular surface of the inner sealing ring and the outer circular surface of the outer sealing ring, and the sealing lips are tightly attached to the outer circular surface of the inner sealing panel or the inner circular surface of the outer sealing panel to achieve contact sealing.
2. The male contact seal arrangement for a bull gear as set forth in claim 1, wherein: and the support ring is welded and fixed on the inner wall of the large gear ring.
3. The male contact seal arrangement for a bull gear as set forth in claim 1, wherein: the movable ring, the supporting ring and the sealing panel are radially connected and fixed through the pressing plate and two groups of bolts, wherein one group of bolts are radially connected and fixed with the movable ring and the supporting ring, and the other group of bolts are radially connected and fixed with the movable ring, the supporting ring and the sealing panel inserted into the movable ring.
4. The male contact seal arrangement for a bull gear as set forth in claim 1, wherein: and three sealing lips which incline towards the static connecting ring are arranged on the inner circular surface of the inner sealing ring and the outer circular surface of the outer sealing ring.
5. The male contact seal arrangement for a bull gear as set forth in claim 4, wherein: at least one sealing lip which inclines towards the moving ring is arranged at the edge of the inner circular surface of the inner sealing ring and the edge of the outer circular surface of the outer sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122208600.5U CN216112077U (en) | 2021-09-13 | 2021-09-13 | Plug-in contact sealing device for large gear ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122208600.5U CN216112077U (en) | 2021-09-13 | 2021-09-13 | Plug-in contact sealing device for large gear ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216112077U true CN216112077U (en) | 2022-03-22 |
Family
ID=80733061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122208600.5U Active CN216112077U (en) | 2021-09-13 | 2021-09-13 | Plug-in contact sealing device for large gear ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216112077U (en) |
-
2021
- 2021-09-13 CN CN202122208600.5U patent/CN216112077U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110566670A (en) | Axial multi-lip rotary supporting sealing device | |
| CN110645357A (en) | Radial multi-lip supporting oil seal device | |
| CN110553037A (en) | Radial multi-lip labyrinth seal device for rotating shaft | |
| CN213393538U (en) | Oil-proof and dust-proof backflow sealing device | |
| CN216045435U (en) | Built-in axial oil seal device | |
| CN210890099U (en) | Axial multi-lip sealing device for rotating shaft | |
| CN110594414B (en) | Axial multi-lip labyrinth seal device for rotating shaft | |
| CN216112077U (en) | Plug-in contact sealing device for large gear ring | |
| CN216112166U (en) | Combined labyrinth sealing device | |
| CN216112078U (en) | A cladding formula contact seal device for bull gear | |
| CN214197243U (en) | Multidirectional sealing device | |
| CN216112079U (en) | Labyrinth sealing device for large gear ring | |
| CN210890091U (en) | Axial multi-lip rotary support sealing device | |
| CN212775579U (en) | Combined oil seal with oil return function | |
| CN210859819U (en) | Automatic grease discharging type wind generating set main shaft sealing device | |
| CN212225993U (en) | Oil-proof and dust-proof sealing device | |
| CN211778979U (en) | Anti-deflection multi-lip sealing device for ball mill | |
| CN211738032U (en) | Anti-deflection labyrinth sealing device for ball mill | |
| CN210715957U (en) | Labyrinth sealing device based on felt sealing ring | |
| CN214305281U (en) | Flow guide type contact labyrinth sealing device | |
| CN214197253U (en) | Radial compression oil seal device | |
| CN217355563U (en) | Radial multi-lip combined sealing device | |
| CN212177866U (en) | Dust-protection type main shaft sealing device | |
| CN210890094U (en) | Multi-lip support dynamic sealing device | |
| CN221033955U (en) | Dynamic and static ring combined framework oil seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |