CN216112078U - A cladding formula contact seal device for bull gear - Google Patents
A cladding formula contact seal device for bull gear Download PDFInfo
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- CN216112078U CN216112078U CN202122208609.6U CN202122208609U CN216112078U CN 216112078 U CN216112078 U CN 216112078U CN 202122208609 U CN202122208609 U CN 202122208609U CN 216112078 U CN216112078 U CN 216112078U
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Abstract
The utility model provides a cladding type contact sealing device for a large gear ring, which is arranged between the large gear ring and a gear cover, wherein the large gear ring is positioned in the gear cover, a gap between the interior 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 static ring comprises a static connection ring and an inner sealing ring and an outer sealing ring which are arranged along the axial direction, the static connection 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 movable ring, of the static connection ring, the inner sealing ring and the outer sealing ring are of an integrated structure, and the joints of the three are folded and arranged to be of a concave structure; the utility model can better seal a cavity containing lubricating grease between the large gear ring and the gear cover, can still ensure the sealing effect when the large gear ring generates weak deflection, and has simple structure, convenient installation and long service life.
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 a cladding 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, convenience in installation and long service life.
The technical scheme adopted for realizing the above purpose of the utility model is as follows:
a coated 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 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, and the joints of the three are folded and arranged to be of a concave structure; the inner sealing ring and the outer sealing ring jointly coat the inner sealing panel and the outer sealing panel in a cavity formed by the inner sealing ring and the outer sealing ring, more than one inclined sealing lip is arranged on the outer circular surface of the inner sealing ring and the inner circular surface of the outer sealing ring, and the sealing lips are tightly attached to the inner circular surface of the inner sealing panel or the outer circular surface of the outer sealing panel to realize 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 outer circular surface of the inner sealing ring and the inner 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 outer circular surface of the inner sealing ring and the edge of the inner circular surface of the outer sealing ring.
Compared with the prior art, the cladding type 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 panel and the outer sealing panel are covered in the cavity formed by the inner sealing ring and the outer sealing ring, so that the sealing lip is in contact sealing with the sealing panel, and good sealing effect is realized through multiple sealing. 2. The joints of the inner sealing ring and the outer sealing ring and the static connecting ring are folded and arranged to be of a concave structure, a cavity space formed by the inner sealing ring and the outer sealing ring is increased, a contraction force can be generated when the sealing lip is in contact with the inner sealing panel or the outer sealing panel, the sealing effect is further enhanced, when the large gear ring rotates and weak axial deflection occurs, 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 deflection resistance performance of the inner sealing ring and the outer sealing ring is further improved due to the resilience characteristics 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 a clad contact sealing device for a bull gear provided in embodiment 1;
fig. 2 is a schematic overall structure diagram of the clad contact sealing device for a bull 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 cladding type 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 circumferential 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 arranged, the inner sealing panel is located inside the outer sealing panel, one end of both are inserted into a slot provided on a side wall of the movable ring, and the other end of both extend towards the stationary ring direction, 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, the inner sealing ring and the outer sealing ring are of an integrated structure, and the joints of the three are folded and arranged to be of a concave structure; the inner sealing ring and the outer sealing ring jointly coat the inner sealing panel and the outer sealing panel in a cavity formed by the inner sealing ring and the outer sealing ring, three sealing lips 10 inclined towards the static connecting ring are arranged on the outer circular surface of the inner sealing ring and the inner circular surface of the outer sealing ring, and the sealing lips are tightly attached to the inner circular surface of the inner sealing panel or the outer circular surface of the outer sealing panel to realize contact sealing.
Example 2
As shown in fig. 2, the overall structure of the clad 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 outer circumferential surface edge of the inner sealing ring and the inner circumferential surface edge of the outer sealing ring.
Claims (5)
1. The utility model provides a cladding formula 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 of gear cover and the bull gear 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 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, and the joints of the three are folded and arranged to be of a concave structure; the inner sealing ring and the outer sealing ring jointly coat the inner sealing panel and the outer sealing panel in a cavity formed by the inner sealing ring and the outer sealing ring, more than one inclined sealing lip is arranged on the outer circular surface of the inner sealing ring and the inner circular surface of the outer sealing ring, and the sealing lips are tightly attached to the inner circular surface of the inner sealing panel or the outer circular surface of the outer sealing panel to realize contact sealing.
2. The clad contact seal apparatus for a bull gear according to claim 1, wherein: and the support ring is welded and fixed on the inner wall of the large gear ring.
3. The clad contact seal apparatus for a bull gear according to 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 clad contact seal apparatus for a bull gear according to claim 1, wherein: and three sealing lips which incline towards the static connecting ring are arranged on the outer circular surface of the inner sealing ring and the inner circular surface of the outer sealing ring.
5. The clad contact seal apparatus for a bull gear as defined in claim 4, wherein: at least one sealing lip which inclines towards the moving ring is arranged at the edge of the outer circular surface of the inner sealing ring and the edge of the inner circular surface of the outer sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122208609.6U CN216112078U (en) | 2021-09-13 | 2021-09-13 | A cladding formula contact seal device for bull gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122208609.6U CN216112078U (en) | 2021-09-13 | 2021-09-13 | A cladding formula contact seal device for bull gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216112078U true CN216112078U (en) | 2022-03-22 |
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ID=80733052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122208609.6U Active CN216112078U (en) | 2021-09-13 | 2021-09-13 | A cladding formula contact seal device for bull gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216112078U (en) |
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2021
- 2021-09-13 CN CN202122208609.6U patent/CN216112078U/en active Active
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