CN213954349U - Sealed magnetic fluid - Google Patents
Sealed magnetic fluid Download PDFInfo
- Publication number
- CN213954349U CN213954349U CN202022718486.6U CN202022718486U CN213954349U CN 213954349 U CN213954349 U CN 213954349U CN 202022718486 U CN202022718486 U CN 202022718486U CN 213954349 U CN213954349 U CN 213954349U
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- rotating shaft
- outer sleeve
- angular contact
- periphery
- annular groove
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A sealed magnetic fluid comprises a rotating shaft, an outer sleeve, an angular contact radial thrust bearing, a locking nut and an annular end cover; the rotating shaft is in a rotating state; one side of the rotating shaft is positioned in an atmospheric environment, and the other side of the rotating shaft is positioned in a vacuum environment; the angular contact bearing of the centripetal thrust is arranged on the periphery of the rotating shaft; the middle part of the outer sleeve is provided with a first space for placing the angular contact thrust bearing; the annular end cover is sleeved on the periphery of the rotating shaft and tightly presses the side wall of the angular contact radial thrust bearing; the inner periphery of the annular end cover is connected with the outer periphery of the rotating shaft in a sliding manner; the other end of the outer sleeve faces the vacuum side, a stepped first annular groove is formed in the outer sleeve, a first sealing ring is arranged on the annular groove, a second annular groove is formed in the outer end face of the annular groove, and a second sealing ring is arranged in the second annular groove. The utility model discloses in, under the high-speed pivoted state of axis of rotation not influencing, equipment integral seal effect reaches best.
Description
Technical Field
The utility model relates to a magnetic current body field especially relates to a sealed magnetic current body.
Background
Magnetic fluid assemblies are commonly used in industry where one side of the magnetic fluid is located on the atmosphere side and the other side extends into the vacuum environment. Because the air pressures on the two sides are inconsistent, the magnetic fluid needs to have a good sealing effect, and the normal work of the equipment can be ensured.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
For the technical problem who exists among the solution background art, the utility model provides a sealed magnetic current body has fine leakproofness.
(II) technical scheme
In order to solve the problems, the utility model provides a sealed magnetic fluid, which comprises a rotating shaft, an outer sleeve, an angular contact bearing with centripetal thrust, a locking nut and an annular end cover;
the rotating shaft is in a rotating state; one side of the rotating shaft is positioned in an atmospheric environment, and the other side of the rotating shaft is positioned in a vacuum environment;
the angular contact bearing of the centripetal thrust is arranged on the periphery of the rotating shaft;
the middle part of the outer sleeve is provided with a first space for placing the angular contact bearing, and the inner peripheral wall of the outer sleeve compresses the periphery of the angular contact;
the annular end cover is sleeved on the periphery of the rotating shaft, the annular end cover tightly presses the side wall of the angular contact radial thrust bearing, and the annular end cover is arranged at one end of the outer sleeve through a locking nut; the inner periphery of the annular end cover is connected with the outer periphery of the rotating shaft in a sliding manner;
the other end of the outer sleeve faces the vacuum side, a stepped first annular groove is formed in the outer sleeve, a first sealing ring is arranged on the annular groove, a second annular groove is formed in the outer end face of the annular groove, and a second sealing ring is arranged in the second annular groove;
the inside of the rotating shaft is provided with a cooling water circulation flow channel.
Preferably, the end surface of the outer sleeve facing the vacuum side is connected with the flange assembly; and the second sealing ring is tightly pressed between the outer sleeve and the flange plate to form a sealing structure.
Preferably, the flange assembly is the boundary between the atmospheric environment and the vacuum environment.
Preferably, the inner circumferential surface of the first seal ring is provided with a spline, and a space between the spline and the outer circumference of the rotating shaft is filled with magnetic fluid to form a fluid seal.
In the utility model, the annular end cover compresses the side wall of the angular contact bearing to prevent the angular contact bearing from moving along the axis; the inner peripheral wall of the outer sleeve compresses the periphery of the angular contact bearing to prevent the angular contact bearing angular contact.
The utility model discloses in, under the high-speed pivoted state of axis of rotation not influencing, first sealing washer has fine sealed effect with the second sealing washer, guarantees that the equipment overall seal effect reaches best.
In the utility model, the inner peripheral surface of the first sealing ring is provided with a tooth socket, and magnetic liquid is filled between the tooth socket and the periphery of the rotating shaft to form liquid sealing; magnetic liquid can be expanded by magnetic force generated by the permanent magnetic columns and can be tightly attached to the pole shoes to form a liquid sealing ring, so that rotary sealing of the periphery of the rotating shaft is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of the sealing magnetic fluid provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, the sealed magnetic fluid provided by the present invention comprises a rotating shaft 1, an outer sleeve 2, an angular contact radial thrust bearing 4, a lock nut 7 and an annular end cover 8;
the rotating shaft 1 is in a rotating state; one side of the rotating shaft 1 is positioned in an atmospheric environment, and the other side of the rotating shaft is positioned in a vacuum environment;
the angular contact bearing 4 of the centripetal thrust is set up in the periphery of the rotating shaft 1;
the middle part of the outer sleeve 2 is provided with a first space 21 for placing the angular contact bearing 4, and the inner peripheral wall of the outer sleeve 2 compresses the periphery of the angular contact bearing 4;
the annular end cover 8 is sleeved on the periphery of the rotating shaft 1, the annular end cover 8 tightly presses the side wall of the angular contact radial thrust bearing 4, and the annular end cover 8 is installed at one end of the outer sleeve 2 through a locking nut 7; the inner periphery of the annular end cover 8 is connected with the outer periphery of the rotating shaft 1 in a sliding way;
the other end of the outer sleeve 2 faces the vacuum side, a stepped first annular groove 22 is formed in the outer sleeve, a first sealing ring 3 is arranged on the annular groove 22, a second annular groove 23 is formed in the outer end face of the annular groove, and a second sealing ring 5 is arranged in the second annular groove 23;
the rotating shaft 1 is provided inside with a cooling water circulation flow passage 6.
In the utility model, the annular end cover 8 compresses the side wall of the angular contact bearing 4 to prevent the angular contact bearing 4 from moving along the axis; the inner peripheral wall of the outer sleeve 2 presses the outer periphery of the angular contact bearing 4 to prevent the angular contact bearing 4 from moving in the radial direction.
The utility model discloses in, under the high-speed pivoted state of axis of rotation 1 not influencing, first sealing washer 3 has fine sealed effect with second sealing washer 5, guarantees that the equipment overall seal effect reaches best.
In an alternative embodiment, the end face of the outer sleeve 2 facing the vacuum side is connected to a flange assembly; the second sealing ring 5 is tightly pressed between the outer sleeve 2 and the flange plate to form a sealing structure.
In an alternative embodiment, the flange assembly is the boundary between the atmospheric environment and the vacuum environment.
It should be noted that the second sealing ring 5 is compressed between the outer sleeve 2 and the flange to form a sealing structure, so that the sealing effect of the equipment is enhanced.
In an alternative embodiment, the inner circumferential surface of the first sealing ring 3 is provided with a spline, and magnetic fluid is filled between the spline and the outer circumference of the rotating shaft 1 to form a fluid seal.
It should be noted that the magnetic force generated by the permanent magnetic pole ensures that the magnetic fluid can expand and can cling to the pole shoe to form a liquid seal ring, thereby ensuring the rotary seal of the periphery of the rotating shaft 1.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (4)
1. A sealed magnetic fluid is characterized by comprising a rotating shaft (1), an outer sleeve (2), an angular contact radial thrust bearing (4), a locking nut (7) and an annular end cover (8);
the rotating shaft (1) is in a rotating state; one side of the rotating shaft (1) is positioned in an atmospheric environment, and the other side of the rotating shaft is positioned in a vacuum environment;
the angular contact bearing (4) of the centripetal thrust is arranged on the periphery of the rotating shaft (1);
a first space (21) for placing the angular contact bearing (4) is arranged in the middle of the outer sleeve (2), and the outer periphery of the angular contact bearing (4) is pressed by the inner peripheral wall of the outer sleeve (2);
the annular end cover (8) is sleeved on the periphery of the rotating shaft (1), the annular end cover (8) tightly presses the side wall of the angular contact radial thrust bearing (4), and the annular end cover (8) is installed at one end of the outer sleeve (2) through a locking nut (7); the inner periphery of the annular end cover (8) is connected with the outer periphery of the rotating shaft (1) in a sliding way;
the other end of the outer sleeve (2) faces the vacuum side, a stepped first annular groove (22) is formed in the outer sleeve, a first sealing ring (3) is arranged on the annular groove (22), a second annular groove (23) is formed in the outer end face of the outer sleeve, and a second sealing ring (5) is arranged in the second annular groove (23);
the inside of the rotating shaft (1) is provided with a cooling water circulation flow channel (6).
2. The sealing magnetic fluid according to claim 1, characterized in that the end face of the outer sleeve (2) facing the vacuum side is connected to a flange assembly; the second sealing ring (5) is tightly pressed between the outer sleeve (2) and the flange plate to form a sealing structure.
3. The sealed magnetic fluid of claim 2, wherein the flange assembly is the boundary between the atmospheric environment and the vacuum environment.
4. The sealing magnetic fluid according to claim 1, wherein the inner circumferential surface of the first sealing ring (3) is provided with a tooth groove, and magnetic fluid is filled between the tooth groove and the outer circumference of the rotating shaft (1) to form a fluid seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718486.6U CN213954349U (en) | 2020-11-23 | 2020-11-23 | Sealed magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718486.6U CN213954349U (en) | 2020-11-23 | 2020-11-23 | Sealed magnetic fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213954349U true CN213954349U (en) | 2021-08-13 |
Family
ID=77210262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022718486.6U Active CN213954349U (en) | 2020-11-23 | 2020-11-23 | Sealed magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213954349U (en) |
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2020
- 2020-11-23 CN CN202022718486.6U patent/CN213954349U/en active Active
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