CN211117173U - Bearing inner cover air seal mechanism - Google Patents
Bearing inner cover air seal mechanism Download PDFInfo
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- CN211117173U CN211117173U CN201922333634.XU CN201922333634U CN211117173U CN 211117173 U CN211117173 U CN 211117173U CN 201922333634 U CN201922333634 U CN 201922333634U CN 211117173 U CN211117173 U CN 211117173U
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- inner cover
- sealing ring
- bearing
- bearing inner
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Abstract
The utility model discloses a bearing inner cover gas seal mechanism, which comprises a machine body, a bearing, a rotating shaft, a turntable, a bearing inner cover, a sealing gasket, a fixing screw, a first sealing ring, an oil storage cavity, a second sealing ring and a ball group, wherein the first sealing ring is arranged at the position close to the center of the right side of the turntable and the bottom of a groove of the bearing inner cover, which can play the role of dynamic sealing when the turntable locks the rotating shaft to rotate, the oil storage cavity is arranged at the outer side of the first sealing ring at the right side of the turntable and the bottom of the groove of the bearing inner cover, which can receive lubricating oil seeped out by the first sealing ring when the, and the lubricating oil in the oil storage cavity is pumped back when the pressure is recovered, the left side surface of the turntable and the right side surface of the machine body are provided with a second sealing ring, the second sealing ring and the right groove of the machine body are provided with a ball group, the device guarantees the sealed effect through dual dynamic seal ring to prevent that the atmoseal structure from leading to inefficacy because of the pressure variation in the organism.
Description
Technical Field
The utility model relates to a bearing installation technical field specifically is a bearing inner cup atmoseal mechanism.
Background
The problem of oil leakage of the bearing in the operation process is the most troublesome and headache problem in the industry at one time, and the operation and the service life of the bearing are influenced, so that a sealing ring and a floating sealing ring are added at the inner cover of the bearing, and the air pressure of an air sealing cavity of the bearing is lower than that of the inside of the bearing due to the negative pressure action of a motor cooling device, so that oil leakage is caused. Then, some factory household rubber tubes communicate the air seal cavity with the outside atmosphere, so that the influence of the negative pressure of the motor on the sealing of the bearing is reduced, but in practical application, the sealing effect is not ideal because the internal and external pressure difference still exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bearing inner cover atmoseal mechanism to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a bearing inner cover air seal mechanism comprises a machine body, a bearing, a rotating shaft, a rotary table, a bearing inner cover, a sealing gasket, a fixing screw, a first sealing ring, an oil storage cavity, a second sealing ring and a ball group, wherein a bearing mounting hole is formed in the machine body, the left end of the rotating shaft is fixed in the bearing mounting hole through the bearing, the rotating shaft is positioned on the right side of the bearing and is in interference connection with the rotary table, the rotary table is a disc, a circular boss is arranged on the right side of the disc, a circular through hole is formed in the center of the boss, and the rotating shaft;
the right side wall of the machine body faces the air seal inner cavity, circular grooves are formed in the periphery of a bearing mounting hole in an array mode, internal threads are formed in the inner wall of each groove, the bearing inner cover can be fixed to the right side of the machine body through a fixing screw, and a sealing gasket is arranged between the bearing inner cover and the machine body and can seal the bearing inner cover and the machine body;
the edge of the bearing inner cover is provided with a circle of circular plates with fixed edges, the fixed edges are provided with circular through holes in an array mode, fixing screws are inserted, the center of the left side of the bearing inner cover is provided with a circular groove, the size of the groove is the same as that of the outer ring of the turntable, the center of the bottom of the groove is provided with a circular through hole, the radius of the through hole is the same as the outer diameter of a boss on the right side of the turntable, and the turntable is inserted;
annular grooves are formed in the positions, close to the center, of the right side of the rotary table and the bottom of the groove of the bearing inner cover, a first sealing ring is connected in the grooves in a sliding mode and can play a role of dynamic sealing when the rotary table is locked to rotate, the annular grooves are formed in the positions, located on the outer side of the first sealing ring, of the right side of the rotary table and the bottom of the groove of the bearing inner cover, the two annular grooves form an oil storage cavity and can receive lubricating oil seeped out from the first sealing ring when internal pressure is too high, and the lubricating oil in the oil storage cavity is pumped back when the;
the rotary table is characterized in that annular grooves are formed in the corresponding positions of the left side surface of the rotary table and the right side surface of the machine body, a second sealing ring is connected in the grooves in a sliding mode, a circle of annular boss is arranged in the annular groove in the right side surface of the machine body, a circle of arc-shaped groove is formed in the center of the right side surface of the boss, a U-shaped groove is formed in the left side of the second sealing ring, the U-shaped side wall is in contact with the boss side wall of the right side surface of the machine body, a ball group is arranged between the top surface of the boss and the bottom of the U-shaped groove formed;
as a further aspect of the present invention: the first sealing ring and the second sealing ring are polytetrafluoroethylene circular rings, so that the wear resistance is good, the friction force is small, the friction force between the turntable and the machine body and between the turntable and the bearing inner cover can be reduced, and the sealing effect is provided when the turntable rotates;
as a further aspect of the present invention: the sealing gasket is made of butadiene-acrylonitrile rubber and has good oil resistance.
Compared with the prior art, the beneficial effects of the utility model are that: the right side of the rotating shaft, which is positioned on the bearing, is in interference connection with a rotary table, the bearing inner cover is fixed on the right side of the machine body through a fixing screw, a sealing gasket is arranged between the bearing inner cover and the machine body and can seal the space between the bearing inner cover and the machine body, the rotary table rotates in a cavity between the bearing inner cover and the machine body, a ring-shaped groove is arranged at the position, close to the center, of the right side of the rotary table and the bottom of the groove of the bearing inner cover, a first sealing ring is connected in the groove in a sliding manner and can play a role of dynamic sealing when the rotary table locks the rotating shaft to rotate, an oil storage cavity is arranged at the outer side of the first sealing ring at the right side of the rotary table and the bottom of the groove of the bearing inner cover and can receive lubricating oil seeped out from the first sealing ring when the internal pressure is too high, the lubricating oil in, the sealing effect is improved while the rotating resistance of the second sealing ring is reduced, the sealing effect is ensured by the double-acting sealing ring, and the failure of the air sealing structure due to the pressure change in the machine body is prevented.
Drawings
Fig. 1 is a schematic structural diagram of a gas seal mechanism of a bearing inner cover.
In the figure: the oil-saving rotary table comprises a machine body 1, a bearing 2, a rotating shaft 3, a rotary table 4, a bearing inner cover 5, a sealing gasket 6, a fixing screw 7, a first sealing ring 8, an oil storage cavity 9, a second sealing ring 10 and a ball group 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a bearing inner cover gas seal mechanism includes a machine body 1, a bearing 2, a rotating shaft 3, a rotating disc 4, a bearing inner cover 5, a sealing pad 6, a fixing screw 7, a first sealing ring 8, an oil storage cavity 9, a second sealing ring 10, and a ball group 11, wherein a bearing mounting hole is formed in the machine body 1, a left end of the rotating shaft 3 is fixed in the bearing mounting hole through the bearing 2, the rotating shaft 3 is located on the right side of the bearing 2 and is in interference connection with the rotating disc 4, the rotating disc 4 is a disc with a circular boss on the right side, a circular through hole is formed in the center of the boss, and the rotating shaft 3 is;
the right side wall of the machine body 1 faces the air seal inner cavity, circular grooves are formed in the periphery of a bearing mounting hole in an array mode, internal threads are formed in the inner wall of each groove, the bearing inner cover 5 can be fixed to the right side of the machine body 1 through a fixing screw 7, and a sealing gasket 6 is arranged between the bearing inner cover 5 and the machine body 1 and can seal the space between the bearing inner cover 5 and the machine body 1;
a circle of circular plates with fixed edges are arranged at the edge of the bearing inner cover 5, circular through holes are arranged on the fixed edges in an array mode, a circular groove is formed in the center of the left side of the bearing inner cover 5 by inserting fixing screws 7, the size of the groove is the same as that of the outer ring of the rotary table 4, a circular through hole is formed in the center of the bottom of the groove, the radius of the through hole is the same as the outer diameter of a boss on the right side of the rotary table 4, and the rotary table 4 is;
annular grooves are formed in the positions, close to the center, of the right side of the rotary disc 4 and the bottom of the groove of the bearing inner cover 5, a first sealing ring 8 is connected in the grooves in a sliding mode, the rotary disc 4 can play a role in dynamic sealing when the rotary shaft is locked to rotate, the annular grooves are formed in the positions, located on the outer side of the first sealing ring 8, of the bottom of the groove of the right side of the rotary disc 4 and the bottom of the groove of the bearing inner cover 5, the two annular grooves form an oil storage cavity 9, lubricating oil seeped out by the first sealing ring 8 can be received when internal pressure is too high, and the lubricating oil in;
the left side surface of the rotary table 4 and the right side surface of the machine body 1 are provided with annular grooves in corresponding positions, a second sealing ring 10 is connected in the grooves in a sliding manner, a circle of annular boss is arranged in the annular groove in the right side surface of the machine body 1, a circle of arc-shaped groove is arranged at the center of the right side surface of the boss, a U-shaped groove is arranged on the left side of the second sealing ring 10, the U-shaped side wall is contacted with the boss side wall of the right side surface of the machine body, and a ball group 11 is arranged between the top surface of the boss and the bottom of the U-shaped groove arranged on the left side of the second sealing ring 10;
the first sealing ring 8 and the second sealing ring 10 are polytetrafluoroethylene annular bodies, so that the wear resistance is good, the friction force is small, the friction force between the rotary table 4 and the machine body 1 and between the rotary table 4 and the bearing inner cover 5 can be reduced, and the sealing effect is provided when the rotary table 4 rotates;
the sealing gasket 6 is made of butadiene acrylonitrile rubber and has good oil resistance.
The utility model discloses a theory of operation is: the right side of the rotating shaft 3, which is positioned on the bearing 2, is in interference connection with a rotary table 4, the bearing inner cover 5 is fixed on the right side of the machine body 1 through a fixing screw 7, a sealing gasket 6 is arranged between the bearing inner cover 5 and the machine body 1 and can seal the bearing inner cover 5 and the machine body 1, the rotary table 4 rotates in a cavity between the bearing inner cover 5 and the machine body 1, a ring-shaped groove is arranged at the positions, close to the center, of the right side of the rotary table 4 and the bottom of the groove of the bearing inner cover 5, a first sealing ring 8 is connected in the groove in a sliding manner and can play a role of dynamic sealing when the rotary table 4 locks the rotating shaft to rotate, an oil storage cavity 9 is arranged at the outer side of the first sealing ring 8 at the right side of the rotary table 4 and the bottom of the groove of the bearing inner cover 5 and can receive lubricating oil seeped out from the first sealing ring 8 when the internal pressure is overla, the ball group 11 is arranged in the right groove of the second sealing ring 10 and the machine body 1, so that the rotating resistance of the second sealing ring 10 is reduced, and the sealing effect is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (3)
1. A bearing inner cover air seal mechanism comprises a machine body, a bearing, a rotating shaft, a rotary table, a bearing inner cover, a sealing gasket, a fixing screw, a first sealing ring, an oil storage cavity, a second sealing ring and a ball group, and is characterized in that a bearing mounting hole is formed in the machine body, the left end of the rotating shaft is fixed in the bearing mounting hole through the bearing, the rotating shaft is located on the right side of the bearing and is in interference connection with the rotary table, the rotary table is a disc with a circular boss on the right side, a circular through hole is formed in the center of the boss, and the rotating shaft is fixedly connected in the;
the right side wall of the machine body faces the air seal inner cavity, circular grooves are formed in the periphery of a bearing mounting hole in an array mode, internal threads are formed in the inner wall of each groove, a bearing inner cover can be fixed to the right side of the machine body through fixing screws, and a sealing gasket is arranged between the bearing inner cover and the machine body in a cushioning mode;
the edge of the bearing inner cover is provided with a circle of circular plates with fixed edges, the fixed edges are provided with circular through holes in an array mode, fixing screws are inserted, the center of the left side of the bearing inner cover is provided with a circular groove, the size of the groove is the same as that of the outer ring of the turntable, the center of the bottom of the groove is provided with a circular through hole, the radius of the through hole is the same as the outer diameter of a boss on the right side of the turntable, and the turntable is inserted;
annular grooves are arranged at the positions, close to the center, of the right side of the rotary table and the bottom of the groove of the bearing inner cover, a first sealing ring is connected in the grooves in a sliding mode and can play a role of dynamic sealing when the rotary table locks the rotary shaft to rotate, the annular grooves are arranged on the outer sides, located on the outer side of the first sealing ring, of the right side of the rotary table and the bottom of the groove of the bearing inner cover, and the two annular grooves form an oil storage cavity;
the left surface of carousel and the right flank of organism correspond the position and are equipped with the loop type recess, and sliding connection has the second sealing ring in the recess, is equipped with the annular boss of round ring in the right flank loop type recess of organism, and the right flank center of boss is equipped with round arc recess, and the left side of second sealing ring is equipped with U type recess, and the boss lateral wall contact of U type lateral wall and organism right flank, boss top surface and the left side of second sealing ring are equipped with and are provided with ball group between the U type recess tank bottom.
2. The inner bearing cover gas seal mechanism of claim 1, wherein the first and second seal rings are polytetrafluoroethylene rings.
3. The inner bearing cover gas seal mechanism according to claim 1, wherein the seal is made of nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922333634.XU CN211117173U (en) | 2019-12-23 | 2019-12-23 | Bearing inner cover air seal mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922333634.XU CN211117173U (en) | 2019-12-23 | 2019-12-23 | Bearing inner cover air seal mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211117173U true CN211117173U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922333634.XU Active CN211117173U (en) | 2019-12-23 | 2019-12-23 | Bearing inner cover air seal mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211117173U (en) |
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2019
- 2019-12-23 CN CN201922333634.XU patent/CN211117173U/en active Active
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