CN215673601U - Rotating shaft sealing device - Google Patents
Rotating shaft sealing device Download PDFInfo
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- CN215673601U CN215673601U CN202122144437.0U CN202122144437U CN215673601U CN 215673601 U CN215673601 U CN 215673601U CN 202122144437 U CN202122144437 U CN 202122144437U CN 215673601 U CN215673601 U CN 215673601U
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Abstract
The utility model discloses a rotating shaft sealing device which comprises a sealing seat, wherein the sealing seat is in an annular shape and sleeved on the peripheral surface of a rotating shaft, and is provided with a radial air inlet channel; a labyrinth seal ring, an air passage seal ring and a lip seal ring are sequentially sleeved between the seal seat and the rotating shaft along the direction from inside to outside of the box body; the air passage sealing ring is provided with a connecting air passage, one end of the connecting air passage is communicated with the air inlet passage, and the other end of the connecting air passage is communicated with the labyrinth air passage of the labyrinth sealing ring. When the rotary shaft sealing device is used, compressed air with specified pressure is introduced into the air inlet channel, and the compressed air enters the labyrinth sealing ring through the connecting air channel and fills the whole labyrinth air channel; the materials in the box body permeate into the sealing device under the action of internal pressure, and are blocked in the box body by compressed air and a labyrinth structure in the labyrinth sealing ring, so that the materials are prevented from permeating; even if when labyrinth seal ring appears damaging, the existence of lip seal ring can prevent that the material from outwards continuing the infiltration, and then realizes the dual seal protection.
Description
Technical Field
The utility model relates to the technical field of rotating shaft sealing, in particular to a rotating shaft sealing device.
Background
The rotating shaft sealing device is a sealing structure for preventing materials from permeating to the outside of the box body through the rotating shaft under the action of pressure.
The rotating shaft is required to be connected with the driving device or the supporting bearing when in work, and in order to avoid the situation that materials in the box body enter the driving device or the supporting bearing through the rotating shaft, a sealing structure is required to be additionally arranged between the box body and the driving device or the supporting bearing so as to guarantee the service life of the driving device or the supporting bearing and eliminate the potential explosion hazard. At present, a sealing ring is generally adopted to seal a rotating shaft, but the service life of the sealing ring is limited, and the sealing effect is not ideal.
Therefore, how to ensure the sealing performance of the rotating shaft is an urgent problem to be solved in the field at the present stage.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a rotating shaft sealing device, which can ensure good sealing performance of a rotating shaft, and solve the problems in the field at the present stage.
A rotary shaft sealing device comprises a sealing seat, wherein the sealing seat is in an annular shape sleeved on the peripheral surface of a rotary shaft and is provided with a radial air inlet channel;
a labyrinth seal ring, an air passage seal ring and a lip seal ring are sequentially sleeved between the seal seat and the rotating shaft along the direction from inside to outside of the box body;
the air flue sealing washer is equipped with the connection air flue, the one end of connecting the air flue with the intake duct is linked together, the other end with labyrinth air flue of labyrinth sealing washer is linked together.
Preferably, in the sealing device for the rotating shaft, the lip-shaped sealing rings are two groups which are adjacently sleeved on the rotating shaft.
Preferably, in the rotary shaft sealing device, the connecting air passage comprises an inner ring air passage and an outer ring air passage which are communicated with each other.
Preferably, in the sealing device for the rotating shaft, the inner annular air passage is communicated with the outer annular air passage through a through hole.
Preferably, the sealing seat of the sealing device for the rotating shaft is further provided with a radial air outlet channel, and the lip-shaped sealing ring is located between the air channel sealing ring and the air outlet channel.
Preferably, the rotating shaft sealing device further comprises an alarm; when the material is discharged from the gas outlet channel, the alarm gives an alarm.
The rotary shaft sealing device provided by the utility model comprises a sealing seat, wherein the sealing seat is in an annular shape sleeved on the peripheral surface of a rotary shaft and is provided with a radial air inlet channel; a labyrinth seal ring, an air passage seal ring and a lip seal ring are sequentially sleeved between the seal seat and the rotating shaft along the direction from inside to outside of the box body; the air passage sealing ring is provided with a connecting air passage, one end of the connecting air passage is communicated with the air inlet passage, and the other end of the connecting air passage is communicated with the labyrinth air passage of the labyrinth sealing ring. When the rotary shaft sealing device is used, compressed air with specified pressure is introduced into the air inlet channel, and the compressed air enters the labyrinth sealing ring through the connecting air channel and fills the whole labyrinth air channel; the materials in the box body permeate into the sealing device under the action of internal pressure, and are blocked in the box body by compressed air and a labyrinth structure in the labyrinth sealing ring, so that the materials are prevented from permeating; even if when labyrinth seal ring appears damaging, the existence of lip seal ring can prevent that the material from outwards continuing the infiltration, and then realizes the dual seal protection. Therefore, the rotating shaft sealing device provided by the utility model can ensure good sealing performance of the rotating shaft and solves the problem in the field at the present stage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a rotary shaft seal assembly in accordance with an embodiment of the present invention;
fig. 2 is a schematic diagram of a normal gas path (straight line) and a failed gas path (dotted line) sealed by the rotary shaft sealing device according to the embodiment of the present invention.
In fig. 1-2:
a sealing seat-1; a rotating shaft-2; an inlet channel-3; a box body-4; labyrinth seal ring-5; an air passage sealing ring-6; lip-shaped seal ring-7; and an air outlet channel-8.
Detailed Description
The core of the specific embodiment is to provide a rotating shaft sealing device which can ensure good sealing performance of a rotating shaft and solve the problem in the field at the present stage.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the utility model described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the utility model described in the claims.
The rotary shaft sealing device provided by the specific embodiment comprises a sealing seat 1, wherein the sealing seat 1 is in an annular shape and sleeved on the peripheral surface of a rotary shaft 2, and is provided with a radial air inlet 3; a labyrinth seal ring 5, an air passage seal ring 6 and a lip seal ring 7 are sequentially sleeved between the seal seat 1 and the rotating shaft 2 along the direction from inside to outside of the box body 4; the air passage sealing ring 6 is provided with a connecting air passage, one end of the connecting air passage is communicated with the air inlet passage 3, and the other end of the connecting air passage is communicated with the labyrinth air passage of the labyrinth sealing ring 5.
When the sealing device of the rotating shaft 2 is used, compressed air with specified pressure is introduced into the air inlet 3, enters the labyrinth sealing ring 5 through the connecting air passage and fills the whole labyrinth air passage; materials in the box body 4 permeate into the sealing device under the action of internal pressure, and are blocked in the box body 4 by compressed air and a labyrinth structure in the labyrinth sealing ring 5, so that the materials are prevented from permeating; even if when labyrinth seal 5 appears damaging, lip seal 7's existence can prevent that the material from outwards continuing the infiltration, and then realizes double seal protection.
Therefore, the rotating shaft sealing device provided by the utility model can ensure good sealing performance of the rotating shaft 2 and solve the problem in the field at the present stage. Please refer to fig. 1-2.
The lip seal 7 is configured such that the lip deforms under hydraulic pressure, and the lip is brought into close contact with the seal surface to seal the lip. And the higher the hydraulic pressure is, the tighter the joint of the lip edge and the sealing surface is, and the lip edge has certain automatic compensation capability after being worn.
In the rotary shaft sealing device provided by the present embodiment, the lip-shaped sealing rings 7 may be two groups which are adjacently sleeved on the rotary shaft 2, so as to further ensure the reliability of the sealing device, and realize good sealing of the rotary shaft 2 by one more guarantee.
The rotary shaft sealing device provided by the specific embodiment is connected with the air passage and can comprise the inner ring air passage and the outer ring air passage which are communicated with each other, and then the actual sealing performance is improved by lengthening the length of the connected air passage, so that a better sealing effect is realized.
Furthermore, the inner ring air flue and the outer ring air flue can be communicated through holes, or other channels with the same function can be achieved.
In the rotary shaft sealing device provided by the present embodiment, the sealing seat 1 may further be provided with a radial air outlet channel 8, and the lip-shaped sealing ring 7 may be located between the air channel sealing ring 6 and the air outlet channel 8; and then when lip seal 7 damaged, the material can ooze through gas outlet channel 8, and then in time reminds staff sealing device's operating condition to avoid the material to continue to permeate to the box outside.
Furthermore, in order to better master the working state of the sealing device, an alarm can be further included; when the gas outlet channel 8 is discharged with materials, the alarm can give an alarm to remind the staff of the state of the sealing device in time so as to implement corresponding remedial measures.
Note that, the inside and outside in fig. 1 refer to the inside and outside directions of the case, respectively.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The rotary shaft sealing device is characterized by comprising a sealing seat (1), wherein the sealing seat (1) is in an annular shape and sleeved on the peripheral surface of a rotary shaft (2), and is provided with a radial air inlet channel (3);
a labyrinth seal ring (5), an air passage seal ring (6) and a lip seal ring (7) are sequentially sleeved between the seal seat (1) and the rotating shaft (2) along the direction from inside to outside of the box body (4);
the air flue sealing ring (6) is provided with a connecting air flue, one end of the connecting air flue is communicated with the air inlet channel (3), and the other end of the connecting air flue is communicated with the labyrinth air flue of the labyrinth sealing ring (5).
2. The rotary shaft sealing device according to claim 1, wherein the lip seals (7) are provided in two groups which are adjacently fitted to the rotary shaft (2).
3. The rotary shaft seal device according to claim 1, wherein the connecting air passage includes an inner annular air passage and an outer annular air passage that communicate with each other.
4. The rotary shaft sealing device according to claim 3, wherein the inner annular air passage and the outer annular air passage communicate through a through hole.
5. The rotary shaft seal device according to claim 1, wherein the seal holder (1) is further provided with a radial gas outlet channel (8), and the lip seal (7) is located between the gas channel seal (6) and the gas outlet channel (8).
6. The rotary shaft seal apparatus according to claim 5, further comprising an alarm; when the materials are discharged from the air outlet channel (8), the alarm gives an alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122144437.0U CN215673601U (en) | 2021-09-06 | 2021-09-06 | Rotating shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122144437.0U CN215673601U (en) | 2021-09-06 | 2021-09-06 | Rotating shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215673601U true CN215673601U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122144437.0U Active CN215673601U (en) | 2021-09-06 | 2021-09-06 | Rotating shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215673601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116726751A (en) * | 2023-06-15 | 2023-09-12 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
-
2021
- 2021-09-06 CN CN202122144437.0U patent/CN215673601U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116726751A (en) * | 2023-06-15 | 2023-09-12 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
| CN116726751B (en) * | 2023-06-15 | 2024-04-09 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
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Address after: No. 226 Changsheng Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province, 311801 Patentee after: Zhejiang Soft Control Intelligent Technology Co.,Ltd. Patentee after: MESNAC Co.,Ltd. Address before: No.6-13, Fuqiang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: Zhejiang soft control Intelligent Technology Co.,Ltd. Patentee before: MESNAC Co.,Ltd. |