CN212080162U - High-speed heavy-load magnetic fluid sealing device - Google Patents
High-speed heavy-load magnetic fluid sealing device Download PDFInfo
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- CN212080162U CN212080162U CN202020475341.5U CN202020475341U CN212080162U CN 212080162 U CN212080162 U CN 212080162U CN 202020475341 U CN202020475341 U CN 202020475341U CN 212080162 U CN212080162 U CN 212080162U
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- magnetic fluid
- transmission shaft
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Abstract
The utility model provides a high-speed heavy load magnetic fluid sealing device, including casing, transmission shaft, magnetic fluid sealing mechanism, end cover, first recess, second recess and a set of ball, the transmission shaft right side is equipped with first cyclic annular abrupt platform, be equipped with in the casing with the mounting groove of transmission shaft phase-match, the transmission shaft rotatably installs in the mounting groove, magnetic fluid sealing mechanism includes first magnetic fluid sealing mechanism and second magnetic fluid sealing mechanism, the transmission shaft left side is equipped with first bearing, first bearing mainly is used for providing the radial support of transmission shaft, first recess, second recess and ball are used for providing the axial leftward mechanical support of transmission shaft to convert the rotary friction force into rolling friction to reduce friction heating, improve the adaptive capacity under high-speed heavy load operational environment, the end cover is used for protecting the right-hand member of transmission shaft and casing, the magnetic fluid sealing device is used for rotating sealing between the shell and the transmission shaft.
Description
Technical Field
The utility model relates to a magnetic current body seal's field especially relates to a high-speed heavy load magnetic current body sealing device.
Background
The magnetic fluid sealing technology is developed after a brand new functional material, namely magnetic fluid, appears, and the magnetic fluid sealing device has long service life, no mechanism abrasion, high vacuum degree applicability and the like, so that the magnetic fluid sealing device is widely applied to the occasion of rotary sealing. The magnetic fluid sealed by the magnetic fluid forms a liquid sealing ring under the action of a magnetic field so as to play a role of sealing, so that the magnetic fluid sealing device cannot play a role of mechanical support in the working process, and a bearing is mainly used as a bearing point, so that new requirements are provided for the magnetic fluid sealing device in a high-speed and high-bearing working environment.
Disclosure of Invention
In order to solve the technical problem, a high-speed heavy-load magnetic fluid sealing device is provided.
A high-speed heavy-load magnetic fluid sealing device comprises a shell, a transmission shaft, a magnetic fluid sealing mechanism, an end cover, a first groove, a second groove and a group of balls, wherein a first annular boss is arranged on the right side of the transmission shaft, a mounting groove matched with the transmission shaft is formed in the shell, the transmission shaft is rotatably mounted in the mounting groove and comprises a first magnetic fluid sealing mechanism and a second magnetic fluid sealing mechanism, a first bearing is arranged on the left side of the transmission shaft, an outer ring of the first bearing is mounted on the inner side wall of the shell, the first magnetic fluid sealing mechanism is arranged on one side of the first bearing, the first groove is arranged on the left end face of the first annular boss, the second groove matched with the first groove is arranged on the right side of the mounting groove, and the group of balls are arranged between the first groove and the second groove, a second magnetic fluid sealing mechanism is arranged on one side of the second groove; the right side of the first annular boss is provided with a sliding groove, the end cover is installed at the right end of the shell, and the inner side of the end cover extends towards the sliding groove.
Preferably, the magnetic fluid sealing mechanism comprises a permanent magnet and pole shoes, the permanent magnet is installed on the inner side wall of the shell, the pole shoes are respectively arranged on the left side and the right side of the permanent magnet, an annular magnetic fluid groove is formed in the outer side wall, close to the pole shoes, of the transmission shaft, and magnetic fluid is arranged in the magnetic fluid groove.
Preferably, the inner side of the permanent magnet is provided with a steric hindrance gasket.
Preferably, a second bearing is provided between the circumferential surface of the first annular boss and the inner side wall of the housing.
Preferably, the right side of the outer side wall of the shell is provided with threads, and the end cover is screwed on the outer side of the shell.
Preferably, the two ends of the transmission shaft are respectively provided with a connecting groove.
Preferably, a second annular boss is arranged on the outer side of the shell, a mounting hole is formed in the second annular boss, and a gasket is arranged on the circumferential surface or the end surface of the second annular boss.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the magnetic fluid sealing device comprises a shell, a first bearing, a second bearing, a first groove, a second groove, a magnetic fluid sealing device and a magnetic fluid sealing device, wherein the first bearing is mainly used for providing radial support for a transmission shaft, the first groove, the second groove and balls are used for providing axial leftward mechanical support for the transmission shaft, and the first groove, the second groove and the balls are used for converting rotary friction into rolling friction so as to reduce friction heating and improve adaptability under a high-speed heavy-load working environment; 2. the inner side of the permanent magnet can be provided with a steric hindrance gasket to reduce the space between the permanent magnet and the transmission shaft, and under the condition of high-speed rotation, the air resistance in the space enables the transmission shaft to consume kinetic energy and generate a large amount of heat, so that the space is reduced to be beneficial to reducing the air resistance.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a sectional view of the present invention.
In the drawings, the reference numbers: 1-shell, 2-transmission shaft, 21-first annular boss, 22-sliding chute, 31-first magnetic fluid sealing device, 32-second magnetic fluid sealing device, 33-pole shoe, 34-permanent magnet, 35-magnetic fluid groove, 4-end cover, 5-ball, 51-first groove, 52-second groove, 6-mounting groove, 7-first bearing, 71-second bearing, 8-steric hindrance gasket, 9-connecting groove, 10-second annular boss, 11-gasket and 12-bolt.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
A high-speed heavy-load magnetic fluid sealing device is shown in figures 1 and 2 and comprises a shell 1, a transmission shaft 2, a magnetic fluid sealing mechanism, an end cover 4, a first groove 51, a second groove 52 and a group of balls 5, wherein a first annular boss 21 is arranged on the right side of the transmission shaft 2, a mounting groove 6 matched with the transmission shaft 2 is arranged in the shell 1, the transmission shaft 2 is rotatably arranged in the mounting groove 6 and comprises a first magnetic fluid sealing mechanism 31 and a second magnetic fluid sealing mechanism 32, a first bearing 7 is arranged on the left side of the transmission shaft 2, the outer ring of the first bearing 7 is arranged on the inner side wall of the shell 1, the first magnetic fluid sealing mechanism 31 is arranged on one side of the first bearing 7, the first groove 51 is arranged on the left end face of the first annular boss 21, a second groove 52 matched with the first groove 51 is arranged on the right side of the mounting groove, and the group of balls 5 is arranged between the first groove, the second magnetic fluid sealing mechanism 32 is arranged on one side of the second groove 52, the sliding groove 22 is arranged on the right side of the first annular boss 21, the end cover 4 is installed at the right end of the shell 1, and the inner side of the end cover 4 extends towards the sliding groove 2. The first bearing is mainly used for providing radial support for the transmission shaft 2, and the first groove, the second groove and the ball are used for providing axial leftward mechanical support for the transmission shaft 2 and converting rotary friction force into rolling friction to reduce friction heating and improve adaptability under a high-speed heavy-load working environment; the end cover is used for protecting the right end of the transmission shaft 2 and the shell 1; the magnetic fluid sealing mechanism is used for rotating and sealing between the shell and the transmission shaft.
The magnetic fluid sealing mechanism comprises pole shoes 33 and permanent magnets 34, the permanent magnets 34 are installed on the inner side wall of the shell 1, the pole shoes 33 are respectively arranged on the left side and the right side of the permanent magnets 34, an annular magnetic fluid groove 35 is formed in the outer side wall, close to the pole shoes 33, of the transmission shaft 2, and magnetic fluid is arranged in the magnetic fluid groove 35. The pole shoe 33 is used for conducting the magnetic field of the permanent magnet 34, and the magnetic fluid forms a liquid sealing ring along the magnetic fluid groove 35 under the action of the magnetic field, so that the sealing effect is achieved. As shown in fig. 2, the permanent magnets of the second magnetic fluid sealing mechanism and the first magnetic fluid sealing mechanism are oriented differently.
The inner side of the permanent magnet 34 may be provided with a steric hindrance washer 8 to reduce a space between the permanent magnet 34 and the transmission shaft, and under a high-speed rotation condition, air resistance in the space causes the transmission shaft 2 to consume kinetic energy and generate a large amount of heat, and reducing the space is beneficial to reducing the air resistance.
A second bearing 71 is provided between the circumferential surface of the first annular boss 21 and the inner side wall of the housing 1, so as to improve the axial and radial bearing capacity of the present invention.
The right side of the outer side wall of the shell 1 can be provided with threads, and the end cover 4 is screwed on the outer side of the shell 1.
The two ends of the transmission shaft 2 can be provided with connecting grooves 9, and the transmission shaft is connected with a driving shaft or a driven shaft of an external mechanism through the connecting grooves 9.
The casing 1 outside can be equipped with the annular abrupt platform of second 10, is equipped with the mounting hole on the annular abrupt platform of second 10, and the mounting hole is used for installing through bolt 12 the utility model discloses, the annular abrupt platform of second 10 global or the terminal surface on be equipped with packing ring 11, packing ring 11 is used for the static seal.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A high-speed heavy-load magnetic fluid sealing device comprises a shell, a transmission shaft and a magnetic fluid sealing mechanism, and is characterized by also comprising an end cover, a first groove, a second groove and a group of balls,
the right side of the transmission shaft is provided with a first annular boss, the shell is internally provided with an installation groove matched with the transmission shaft, the transmission shaft is rotatably arranged in the installation groove, the magnetic fluid sealing mechanism comprises a first magnetic fluid sealing mechanism and a second magnetic fluid sealing mechanism,
a first bearing is arranged on the left side of the transmission shaft, an outer ring of the first bearing is arranged on the inner side wall of the shell, a first magnetic fluid sealing mechanism is arranged on one side of the first bearing,
a first groove is formed in the left end face of the first annular boss, a second groove matched with the first groove is formed in the right side of the mounting groove, a group of balls are arranged between the first groove and the second groove, and a second magnetic fluid sealing mechanism is arranged on one side of the second groove;
the right side of the first annular boss is provided with a sliding groove, the end cover is installed at the right end of the shell, and the inner side of the end cover extends towards the sliding groove.
2. The high-speed heavy-load magnetic fluid sealing device according to claim 1, wherein the magnetic fluid sealing mechanism comprises a permanent magnet and pole shoes, the permanent magnet is mounted on the inner side wall of the housing, the pole shoes are respectively arranged on the left side and the right side of the permanent magnet, an annular magnetic fluid groove is arranged on the outer side wall of the transmission shaft close to the pole shoes, and magnetic fluid is arranged in the magnetic fluid groove.
3. The high-speed heavy-duty magnetic fluid seal device according to claim 2, wherein the permanent magnet is provided with a steric hindrance washer on the inside.
4. The high-speed heavy-duty magnetic fluid sealing device according to claim 1, wherein a second bearing is provided between the circumferential surface of the first annular boss and the inner sidewall of the housing.
5. The high-speed heavy-duty magnetic fluid seal device according to claim 1, wherein the right side of the outer side wall of the housing is provided with threads, and the end cover is screwed on the outer side of the housing.
6. The high-speed heavy-load magnetic fluid sealing device according to claim 1, wherein the two ends of the transmission shaft are respectively provided with a connecting groove.
7. The high-speed heavy-load magnetic fluid sealing device according to claim 1, wherein a second annular boss is arranged on the outer side of the shell, a mounting hole is arranged on the second annular boss, and a gasket is arranged on the circumferential surface or the end surface of the second annular boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020475341.5U CN212080162U (en) | 2020-04-03 | 2020-04-03 | High-speed heavy-load magnetic fluid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020475341.5U CN212080162U (en) | 2020-04-03 | 2020-04-03 | High-speed heavy-load magnetic fluid sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212080162U true CN212080162U (en) | 2020-12-04 |
Family
ID=73563963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020475341.5U Active CN212080162U (en) | 2020-04-03 | 2020-04-03 | High-speed heavy-load magnetic fluid sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212080162U (en) |
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2020
- 2020-04-03 CN CN202020475341.5U patent/CN212080162U/en active Active
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