CN216867506U - Magnetic fluid sealing transmission device for transmission shaft - Google Patents
Magnetic fluid sealing transmission device for transmission shaft Download PDFInfo
- Publication number
- CN216867506U CN216867506U CN202220729702.3U CN202220729702U CN216867506U CN 216867506 U CN216867506 U CN 216867506U CN 202220729702 U CN202220729702 U CN 202220729702U CN 216867506 U CN216867506 U CN 216867506U
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- Prior art keywords
- transmission shaft
- magnetic fluid
- shell
- cooling
- shaft body
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 96
- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 239000011553 magnetic fluid Substances 0.000 title claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 abstract description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a magnetic fluid sealing transmission device for a transmission shaft, which comprises a transmission shaft body; the outer side of the transmission shaft body is wrapped with a shell, the inner wall of the shell is provided with a first cooling mechanism, and one side of the shell is provided with a connecting mechanism; according to the utility model, the first cooling mechanism is arranged on the inner wall of the shell, the first sealing plug is separated from the first liquid inlet, the cooling liquid is added into the first cooling cavity through the first liquid inlet, the first cooling cavity is arranged on the inner wall of the shell in a spiral structure, the second sealing plug is separated from the second liquid inlet, the cooling liquid is added into the second cooling cavity, and the heat generated by the transmission shaft body and the bearing can be guided into the second cooling cavity through the cooling liquid arranged in the first cooling cavity and the heat conducting plate to be matched for use so as to cool the second cooling cavity, so that the phenomenon that the heat in the shell is too high and the structure in the device is damaged is avoided, and the service life of the device can be prolonged.
Description
Technical Field
The utility model relates to the technical field of sealed transmission devices, in particular to a magnetic fluid sealed transmission device for a transmission shaft.
Background
The magnetic fluid sealing structure of various transmission shafts at present belongs to single positioning sealing, namely the magnetic fluid sealing structure is only suitable for the rotary sealing of the transmission shaft: if a certain transmission structure needs to do axial rotation movement, meanwhile, when radial displacement movement is required; the utility model discloses a magnetic fluid sealing transmission structure of a conventional transmission shaft, which shows certain defects, and is characterized in that the utility model patent of 'vacuum equipment and magnetic fluid sealing transmission device thereof' with the application number of 'CN 105952904A' comprises a shell for sealing and connecting the vacuum equipment, a shaft sleeve for transmitting power and a magnet for generating a magnetic field, a through hole for the shaft sleeve to pass through is arranged on the shell, a bearing is arranged between the shaft sleeve and the shell, although the method is suitable for narrow installation space and ultrahigh vacuum environment and improves the applicability, the method also has the following defects in the using process:
1. the existing magnetic fluid sealing transmission device for the transmission shaft has the defects that the transmission shaft can generate heat and rise temperature to influence the normal work of the bearing and the magnetic fluid when in work, and the service lives of the bearing and the magnetic fluid are shortened.
2. When vacuum cavities are connected during transmission of a transmission shaft of the conventional magnetic fluid sealing transmission device for the transmission shaft, sealing gaskets are mostly used for ensuring the sealing property of device connection, but the sealing gaskets are damaged due to high friction temperature in the long-term rotation process of the transmission shaft, so that the sealing property of device connection can be influenced, and the normal use of the device can be further influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a magnetic fluid sealing transmission device for a transmission shaft, which aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the magnetic fluid seal transmission device for the transmission shaft comprises a transmission shaft body; the outer side of the transmission shaft body is wrapped with a shell, the inner wall of the shell is provided with a first cooling mechanism, and one side of the shell is provided with a connecting mechanism;
the first cooling mechanism comprises a first cooling cavity, a first liquid inlet and a first sealing plug, the first cooling cavity is formed in the inner wall of the shell, the two ends of the first cooling cavity are provided with the first liquid inlet on the outer side of the shell, and the first sealing plug is arranged in the first liquid inlet;
the connecting mechanism comprises a flange plate, screw holes, female and male bolts, a placing groove and a sealing gasket, wherein multiple groups of screw holes are formed in the surface of the flange plate at equal intervals, the female and male bolts are arranged inside the screw holes, the placing groove is formed inside the flange plate, and the sealing gasket is arranged inside the placing groove.
Preferably, an installation groove is formed in the inner wall of one end of the transmission shaft body, and a torque sensor is installed inside the installation groove.
Preferably, the inside of transmission shaft body is provided with second cooling body, and the outside of second cooling body is provided with the heat-conducting plate, and second cooling body is including second cooling chamber, second inlet and second sealing plug, the inside at the transmission shaft body is seted up in the second cooling chamber, and the one end top in second cooling chamber is provided with the second inlet, and the internally mounted of second inlet has the second sealing plug.
Preferably, the surface of the transmission shaft body is provided with a magnetic fluid body, and the left side and the right side of the magnetic fluid body are symmetrically provided with bearings.
Preferably, the outside of the magnetic fluid body is symmetrically provided with magnets, and the other side of each magnet is fixedly connected with the inner wall of the shell.
Preferably, the other end of the shell is provided with a sealing disc, mounting holes are formed in the surface of the sealing disc at equal intervals, and fixing bolts are mounted inside the mounting holes.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model separates the first sealing plug from the first liquid inlet by arranging the first cooling mechanism on the inner wall of the shell, adds cooling liquid into the first cooling cavity through the first liquid inlet, then installs the first sealing plug into the first liquid inlet, because the first cooling cavity is arranged on the inner wall of the shell in a spiral structure, the second sealing plug is separated from the second liquid inlet at the same time, the cooling liquid is added into the second cooling cavity, during the rotation of the transmission shaft body, a large amount of heat is generated by the friction between the transmission shaft body and the bearing, can use the leading-in inside cooperation to the second cooling chamber of heat that transmission shaft body and bearing produced through the inside coolant liquid of placing of first cooling chamber and heat-conducting plate to cool down it, avoid the inside heat of shell too high, cause the damage to the structure of device inside, and then can improve the life of device.
2. According to the utility model, the connecting mechanism is arranged on one side of the shell, the sealing gasket is arranged in the placing groove, so that the inner side of the surface of the flange plate is attached to the outside of the vacuum cavity, the screw holes formed in the surface of the flange plate correspond to the fixing holes in the surface of the vacuum cavity, then the female and male bolts are rotated to fix the flange plate outside the vacuum cavity, and through the matched use of the flange plate and the sealing gasket, the sealing performance of the connection between the shell and the vacuum cavity can be ensured, and the stable rotation of the transmission shaft body is ensured through the threaded structure formed by the screw holes and the female and male bolts.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a side cross-sectional structural schematic view of the present invention;
FIG. 3 is a schematic view of the auxiliary structure of the connection between the housing and the first cooling chamber of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
in the figure: 1. a transmission shaft body; 2. a housing; 3. a first cooling mechanism; 301. a first cooling chamber; 3002. a first liquid inlet; 303. a first sealing plug; 4. sealing the disc; 401. mounting holes; 402. a fixing bolt; 5. a second cooling mechanism; 501. a second cooling chamber; 502. a second liquid inlet; 503. a second sealing plug; 6. a bearing; 7. a connecting mechanism; 701. a flange plate; 702. a screw hole; 703. a female bolt and a male bolt; 704. a placement groove; 705. a gasket; 8. a magnetic fluid body; 9. a magnet; 10. a heat conducting plate; 11. mounting grooves; 1101. a torque sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Referring to fig. 1-4, an embodiment of the present invention is shown: the magnetic fluid seal transmission device for the transmission shaft comprises a transmission shaft body 1; the outer side of the transmission shaft body 1 is wrapped by a shell 2, the inner wall of the shell 2 is provided with a first cooling mechanism 3, and one side of the shell 2 is provided with a connecting mechanism 7;
the first cooling mechanism 3 comprises a first cooling cavity 301, a first liquid inlet 302 and a first sealing plug 303, the first cooling cavity 301 is arranged on the inner wall of the housing 2, the first liquid inlet 302 is arranged at the outer side of the housing 2 at two ends of the first cooling cavity 301, and the first sealing plug 303 is arranged in the first liquid inlet 302;
the connecting mechanism 7 comprises a flange plate 701, screw holes 702, female and male bolts 703, a placing groove 704 and a sealing gasket 705, wherein a plurality of groups of screw holes 702 are formed in the surface of the flange plate 701 at equal intervals, the female and male bolts 703 are installed inside the screw holes 702, the placing groove 704 is formed inside the flange plate 701, and the sealing gasket 705 is installed inside the placing groove 704;
specifically, as shown in fig. 1, 2, 3 and 4, when in use, when detecting equipment, the equipment is placed inside a vacuum chamber, then the mounting groove 11 at one end of the transmission shaft body 1 is inserted into the equipment to be detected inside the vacuum chamber to be fixedly connected, meanwhile, the sealing gasket 705 is mounted inside the placing groove 704 to make the inner side of the surface of the flange plate 701 fit with the outside of the vacuum chamber, the screw hole 702 formed on the surface of the flange plate 701 corresponds to the surface fixing hole of the vacuum chamber, then the female screw 703 is rotated to fix the flange plate 701 outside the vacuum chamber, then the sealing disc 4 is mounted on the surface of the transmission shaft body 1 to make the inner side of the mounting hole 401 fit with the outer side of the casing 2, then the fixing bolt 402 is inserted into the mounting hole 401 to fix the sealing disc 4 on one side of the casing 2, thereby ensuring the sealing performance in the inner cavity of the casing 2 and enabling the magnetic fluid body 8 to be stably adsorbed and filled in the gap, realize the isolation of vacuum environment and atmospheric environment, thereby prolong the service life of the device, before detecting the rotation of the equipment, separate the first sealing plug 303 from the first liquid inlet 302, add the cooling liquid into the first cooling cavity 301 through the first liquid inlet 302, then install the first sealing plug 303 into the first liquid inlet 302, because the first cooling cavity 301 is arranged on the inner wall of the shell 2 in a spiral structure, and separate the second sealing plug 503 from the second liquid inlet 502, add the cooling liquid into the second cooling cavity 501, in the process of the rotation of the transmission shaft body 1, the friction between the transmission shaft body 1 and the bearing 6 can generate a large amount of heat, the temperature can be reduced through the cooling liquid placed in the first cooling cavity 301, the heat generated by the transmission shaft body 1 and the bearing 6 is led into the second cooling cavity 501 through the heat conducting plate 10, the temperature is reduced, the phenomenon that the heat inside the shell 2 is too high is avoided, the service life of the device is influenced, in the rotating process of the transmission shaft body 1, the friction loss can be detected by checking the right end of the transmission shaft body 1 through the torque sensor 1101, the friction loss of the magnetic fluid body 8 sealing transmission device can be detected, and the control is convenient, because the magnetic fluid body 8 and the magnet 9 are arranged inside the transmission shaft body 1, in the rotating process of the transmission shaft body 1, the magnetic fluid body 8 can be filled in the shell 2 under the action of an even stable magnetic field formed by the magnet 9 and the magnetic fluid body 8, a multi-stage O-shaped sealing ring is established, the sealing effect is achieved, and the bearings 6 arranged on the left side and the right side of the magnetic fluid body 8 can buffer the rotating resistance of the transmission shaft body 1.
Further, an installation groove 11 is formed in the inner wall of one end of the transmission shaft body 1, and a torque sensor 1101 is installed inside the installation groove 11;
specifically, as shown in fig. 1, 2 and 3, in the process of rotating the transmission shaft body 1, the friction loss can be detected by checking that the torque sensor 1101 is arranged at the right end of the transmission shaft body 1, and the friction loss of the magnetic fluid body 8 sealing the transmission device can be detected, so that the control is convenient.
Further, a second cooling mechanism 5 is arranged inside the transmission shaft body 1, a heat conducting plate 10 is arranged outside the second cooling mechanism 5, the second cooling mechanism 5 comprises a second cooling cavity 501, a second liquid inlet 502 and a second sealing plug 503, the second cooling cavity 501 is arranged inside the transmission shaft body 1, the second liquid inlet 502 is arranged above one end of the second cooling cavity 501, and the second sealing plug 503 is arranged inside the second liquid inlet 502;
specifically, as shown in fig. 1, fig. 2 and fig. 3, in the process of rotating the transmission shaft body 1, friction between the transmission shaft body 1 and the bearing 6 can generate a large amount of heat, a person can separate the second sealing plug 503 from the second liquid inlet 502, the cooling liquid is added into the second cooling cavity 501, the heat generated by the transmission shaft body 1 and the bearing 6 is conducted into the second cooling cavity 501 through the heat conducting plate 10, the temperature of the heat conducting plate is reduced, the phenomenon that the heat inside the housing 2 is too high is avoided, and the service life of the device is influenced.
Further, a magnetic fluid body 8 is arranged on the surface of the transmission shaft body 1, bearings 6 are symmetrically arranged on the left side and the right side of the magnetic fluid body 8, magnets 9 are symmetrically arranged on the outer side of the magnetic fluid body 8, and the other side of each magnet 9 is fixedly connected with the inner wall of the shell 2;
specifically, as shown in fig. 1, 2 and 3, in the process of rotation of the transmission shaft body 1, under the action of a uniform stable magnetic field formed by the magnet 9 and the magnetic fluid body 8, the magnetic fluid body 8 is filled in a set space, and a multi-stage "O-shaped seal ring" is established, so that the sealing effect is achieved, and meanwhile, the bearings 6 arranged on the left side and the right side of the magnetic fluid body 8 can buffer the resistance of rotation of the transmission shaft body 1.
Further, the other end of the housing 2 is provided with a sealing disc 4, mounting holes 401 are formed in the surface of the sealing disc 4 at equal intervals, and fixing bolts 402 are mounted inside the mounting holes 401;
specifically, as shown in fig. 1, fig. 2 and fig. 3, before the device is used, the sealing disc 4 is installed on the surface of the transmission shaft body 1, the inner side of the installation hole 401 is attached to the outer side of the housing 2, then the fixing bolt 402 is inserted into the installation hole 401, and the sealing disc 4 is fixed on one side of the housing 2, so that the sealing performance in the inner cavity of the housing 2 can be ensured, the magnetic fluid body 8 can stably adsorb and fill the gap, the isolation between the vacuum environment and the atmospheric environment is realized, and the service life of the device is prolonged.
The working principle is as follows: when the device is used, when the device is detected, the device is placed in a vacuum cavity, the mounting groove 11 at one end of the transmission shaft body 1 is inserted into the device to be detected in the vacuum cavity to be fixedly connected, the sealing gasket 705 is mounted in the mounting groove 704 to enable the inner side of the surface of the flange plate 701 to be attached to the outside of the vacuum cavity, the screw hole 702 formed in the surface of the flange plate 701 corresponds to the surface fixing hole of the vacuum cavity, the female and male bolts 703 are rotated to fix the flange plate 701 outside the vacuum cavity, the sealing disc 4 is mounted on the surface of the transmission shaft body 1 to enable the inner side of the mounting hole 401 to be attached to the outer side of the housing 2, the fixing bolt 402 is inserted into the mounting hole 401 to fix the sealing disc 4 on one side of the housing 2, the first sealing plug 303 is separated from the first liquid inlet 302 before the device is detected to rotate, and cooling liquid is added into the first cooling cavity 301 through the first liquid inlet 302, then the first sealing plug 303 is installed inside the first liquid inlet 302, because the first cooling cavity 301 is arranged on the inner wall of the shell 2 in a spiral structure, and the second sealing plug 503 is separated from the second liquid inlet 502, the cooling liquid is added into the second cooling cavity 501, during the rotation process of the transmission shaft body 1, a large amount of heat can be generated by friction between the transmission shaft body 1 and the bearing 6, the temperature can be reduced by the cooling liquid placed inside the first cooling cavity 301, the heat generated by the transmission shaft body 1 and the bearing 6 is guided into the second cooling cavity 501 by the heat conducting plate 10, the temperature can be reduced, the phenomenon that the heat inside the shell 2 is too high and the service life of the device is affected is avoided, because the magnetic fluid body 8 and the magnet 9 are arranged inside the transmission shaft body 1, during the rotation process of the transmission shaft body 1, under the action of a uniform stable magnetic field formed by the magnet 9 and the magnetic fluid body 8, the magnetic fluid body 8 is filled in the shell 2, and a multi-stage O-shaped sealing ring is established, so that the sealing effect is achieved, and the rotating resistance of the transmission shaft body 1 can be buffered due to the bearings 6 arranged on the left side and the right side of the magnetic fluid body 8.
Claims (6)
1. The magnetic fluid sealing transmission device for the transmission shaft comprises a transmission shaft body (1); the method is characterized in that: the outer side of the transmission shaft body (1) is wrapped by a shell (2), the inner wall of the shell (2) is provided with a first cooling mechanism (3), and one side of the shell (2) is provided with a connecting mechanism (7);
the first cooling mechanism (3) comprises a first cooling cavity (301), a first liquid inlet (302) and a first sealing plug (303), the first cooling cavity (301) is arranged on the inner wall of the shell (2), the two ends of the first cooling cavity (301) are provided with the first liquid inlet (302) on the outer side of the shell (2), and the first sealing plug (303) is arranged in the first liquid inlet (302);
the connecting mechanism (7) comprises a flange plate (701), screw holes (702), female and male bolts (703), a placing groove (704) and a sealing gasket (705), wherein multiple groups of screw holes (702) are formed in the surface of the flange plate (701) at equal intervals, the female and male bolts (703) are installed inside the screw holes (702), the placing groove (704) is formed inside the flange plate (701), and the sealing gasket (705) is installed inside the placing groove (704).
2. The magnetic fluid seal transmission device for the transmission shaft according to claim 1, characterized in that: the transmission shaft is characterized in that an installation groove (11) is formed in the inner wall of one end of the transmission shaft body (1), and a torque sensor (1101) is installed inside the installation groove (11).
3. The magnetic fluid seal transmission device for the transmission shaft according to claim 1, characterized in that: the inside of transmission shaft body (1) is provided with second cooling mechanism (5), and the outside of second cooling mechanism (5) is provided with heat-conducting plate (10), and second cooling mechanism (5) are including second cooling chamber (501), second inlet (502) and second sealing plug (503), the inside at transmission shaft body (1) is seted up in second cooling chamber (501), and the one end top in second cooling chamber (501) is provided with second inlet (502), and the internally mounted of second inlet (502) has second sealing plug (503).
4. The magnetic fluid seal transmission device for the transmission shaft according to claim 1, characterized in that: the surface of the transmission shaft body (1) is provided with a magnetic fluid body (8), and the left side and the right side of the magnetic fluid body (8) are symmetrically provided with bearings (6).
5. The magnetic fluid seal transmission device for the transmission shaft according to claim 4, wherein: and magnets (9) are symmetrically arranged on the outer side of the magnetic fluid body (8), and the other side of each magnet (9) is fixedly connected with the inner wall of the shell (2).
6. The magnetic fluid seal transmission device for the transmission shaft according to claim 1, characterized in that: the other end of shell (2) is provided with sealed dish (4), and mounting hole (401) have been seted up to the surface equidistance of sealed dish (4), and the internally mounted of mounting hole (401) has gim peg (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220729702.3U CN216867506U (en) | 2022-03-31 | 2022-03-31 | Magnetic fluid sealing transmission device for transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220729702.3U CN216867506U (en) | 2022-03-31 | 2022-03-31 | Magnetic fluid sealing transmission device for transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216867506U true CN216867506U (en) | 2022-07-01 |
Family
ID=82124469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220729702.3U Expired - Fee Related CN216867506U (en) | 2022-03-31 | 2022-03-31 | Magnetic fluid sealing transmission device for transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216867506U (en) |
-
2022
- 2022-03-31 CN CN202220729702.3U patent/CN216867506U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220701 |