CN215911997U - Rotary driving device - Google Patents
Rotary driving device Download PDFInfo
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- CN215911997U CN215911997U CN202122181482.3U CN202122181482U CN215911997U CN 215911997 U CN215911997 U CN 215911997U CN 202122181482 U CN202122181482 U CN 202122181482U CN 215911997 U CN215911997 U CN 215911997U
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- magnetic sleeve
- sleeve
- isolation cover
- driving shaft
- annular flange
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Abstract
The utility model discloses a rotary driving device which comprises a magnetic coupling and a driving shaft assembly, wherein the magnetic coupling comprises an outer magnetic sleeve, an inner magnetic sleeve and an isolation cover, the isolation cover is arranged in a through hole of the outer magnetic sleeve, one end of the isolation cover, far away from a motor, is provided with an opening, the inner magnetic sleeve is arranged in the isolation cover, the isolation cover is in clearance fit with the inner magnetic sleeve and the outer magnetic sleeve, and the inner magnetic sleeve and the outer magnetic sleeve are arranged in a magnetic mutual adsorption mode. The driving shaft assembly comprises a driving shaft, one end of the driving shaft penetrates through a through hole which is axially arranged on the inner magnetic sleeve to be fixedly assembled, the inner magnetic sleeve rotates to drive the driving shaft to rotate, the driving shaft is arranged in the isolation cover and is not in direct contact with the isolation cover, the rotating driving shaft cannot influence the sealing effect, the transmission mechanism adopts a magnetic coupling for non-contact transmission, the dynamic sealing of the transmission mechanism is eliminated, and the absolute sealing can be achieved; because the isolation cover is not in contact with the driving shaft, no friction force exists between the isolation cover and the driving shaft, and the problem that the sealing effect is poor due to abrasion of the isolation cover and the driving shaft is avoided.
Description
Technical Field
The utility model relates to a driving device, in particular to a rotary driving device.
Background
In real life, a rotary driving mechanism is a common mechanical mechanism, and the type of the rotary driving mechanism is also various. Most rotating mechanisms can realize continuous rotation, but the existing driving mechanism applied to the high vacuum chamber needs a driving shaft to extend into the vacuum chamber from the outside of the vacuum chamber, the adopted sealing mode is to install an isolation cover for sealing, absolute sealing is difficult to ensure between the fixed isolation cover and the rotating driving shaft, mutual abrasion is generated between the fixed isolation cover and the rotating driving shaft, and the probability of air leakage is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rotary driving device to overcome the defect that a dynamic seal cannot ensure absolute seal. The technical scheme adopted by the utility model is as follows: a rotary driving mechanism comprises a motor and an outer magnetic sleeve flange, wherein the outer magnetic sleeve flange is connected with an output shaft of the motor, the rotary driving mechanism further comprises a magnetic coupling and a driving shaft assembly, the magnetic coupling is connected with the driving shaft, the magnetic coupling comprises an outer magnetic sleeve, an inner magnetic sleeve and an isolation cover, the outer magnetic sleeve is connected with the outer magnetic sleeve flange through bolts, the isolation cover is arranged in a through hole of the outer magnetic sleeve, an opening is formed in one end, far away from the motor, of the isolation cover, the inner magnetic sleeve is arranged in the isolation cover, the isolation cover is in clearance fit with the inner magnetic sleeve and the outer magnetic sleeve, and the inner magnetic sleeve and the outer magnetic sleeve are arranged in a magnetic mutual adsorption mode. The driving shaft assembly comprises a driving shaft, and one end of the driving shaft penetrates through a through hole which is axially arranged on the inner magnetic sleeve to be fixedly assembled. When the motor drives the outer magnetic sleeve to rotate through the outer magnetic sleeve flange, the outer magnetic sleeve and the inner magnetic sleeve are in a mutually adsorbed state, so that the outer magnetic sleeve drives the inner magnetic sleeve to rotate, the inner magnetic sleeve rotates to drive the driving shaft to rotate, the driving shaft is arranged in the isolation cover and does not directly contact with the isolation cover, and the problem that the driving shaft needs to extend into a vacuum chamber from the outside of the vacuum chamber in dynamic sealing, the isolation cover is additionally arranged for sealing, and the fixed isolation cover directly contacts with the rotating driving shaft, so that absolute sealing cannot be guaranteed is solved. Meanwhile, the isolation cover is not in contact with the driving shaft, so that no friction force exists between the isolation cover and the driving shaft, and the isolation cover is prevented from being abraded due to friction to cause poor sealing effect.
As a further improvement of the utility model, the driving shaft assembly further comprises a driving gear, and one end of the driving shaft, which is far away from the inner magnetic sleeve, is connected with the driving gear.
The improved structure of the utility model further comprises a shaft sleeve, wherein the driving shaft penetrates through the shaft sleeve, a first circular ring flange is arranged on the outer side of one end of the opening of the isolation cover, a second circular ring flange is arranged on one end, close to the first circular ring flange, of the shaft sleeve, and the first circular ring flange and the second circular ring flange are fixedly connected through threads.
The utility model is further improved in that a first O-shaped groove is formed in the side surface, close to the first annular flange, of the second annular flange, a first O-shaped ring is arranged in the first O-shaped groove, and the sealing property between the first annular flange and the second annular flange is improved through biological arrangement of the first O-shaped ring.
The sealing device is further improved by comprising a sealing chamber mounting cavity wall, wherein a third annular flange is arranged at one end, away from the first annular flange, of the shaft sleeve, the sealing chamber mounting cavity wall is connected with the third annular flange, a second O-shaped groove is formed in the side face, close to the sealing chamber mounting cavity wall, of the third annular flange, a second O-shaped ring is arranged in the second O-shaped groove, and the sealing performance of the third annular flange and the sealing chamber mounting cavity wall is improved through the arrangement of the second O-shaped ring.
As a further improvement of the present invention, the present invention further comprises a support rod, wherein the support rod connects the motor and the second annular flange.
As a further improvement of the utility model, a groove is arranged in the shaft sleeve, a bearing is arranged in the groove, and the driving shaft passes through the bearing.
The utility model has the beneficial effects that: 1) when the motor drives the outer magnetic sleeve to rotate through the outer magnetic sleeve flange, the outer magnetic sleeve and the inner magnetic sleeve are in a mutually adsorbed state, so that the outer magnetic sleeve drives the inner magnetic sleeve to rotate, the inner magnetic sleeve rotates to drive the driving shaft to rotate, the driving shaft is arranged in the isolation cover and does not directly contact with the isolation cover, the rotating driving shaft cannot influence the sealing effect, the transmission mechanism of the motor adopts a magnetic coupling for non-contact transmission, the dynamic sealing of the transmission mechanism is eliminated, and the absolute sealing can be achieved. 2) Because the cage does not contact with the drive shaft, no friction force is generated between the cage and the drive shaft, and the problem that the sealing effect is poor due to abrasion of the cage and the drive shaft caused by friction is avoided.
Drawings
FIG. 1 is a perspective view of a rotary driving device according to a preferred embodiment of the present invention;
fig. 2 is a sectional view of a rotary driving apparatus according to a preferred embodiment of the present invention.
In the figure: 1. a motor; 11. an output shaft; 12. a support bar; 2. an outer magnetic sleeve flange; 3. an outer magnetic sleeve; 4. an inner magnetic sleeve; 5. an isolation cover; 51. a first annular flange; 6. a drive shaft; 7. a shaft sleeve; 71. a second annular flange; 711. a first O-shaped groove; 712. a first O-ring; 72. a third annular flange; 73. a bearing; 8. the sealed chamber is provided with a chamber wall; 9. the gears are driven.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.
Referring to fig. 1-2, a rotary driving mechanism includes a motor 1, an outer magnetic sleeve flange 2, an outer magnetic sleeve 3, an inner magnetic sleeve 4, and an outer magnetic sleeve flange 2, wherein the outer magnetic sleeve flange 2 is connected to an output shaft 11 of the motor 1, the outer magnetic sleeve 3 is connected to the outer magnetic sleeve flange 2 through bolts, the inner magnetic sleeve 4 is disposed inside a through hole of the outer magnetic sleeve 3, and the inner magnetic sleeve 4 and the outer magnetic sleeve 3 are magnetically attracted to each other, so that the outer magnetic sleeve 3 can drive the inner magnetic sleeve 4 to rotate. The magnetic bearing further comprises a driving shaft 6, one end of the driving shaft 6 penetrates through a through hole axially formed in the inner magnetic sleeve 4 to be fixedly assembled, and the inner magnetic sleeve 4 rotates to drive the driving shaft 6 to rotate. The motor is characterized by further comprising an isolation cover 5, wherein the isolation cover 5 is arranged at an opening at one end, far away from the motor 1, the isolation cover 5 is arranged between the outer magnetic sleeve 3 and the inner magnetic sleeve 4, and the isolation cover 5 is in clearance fit with the inner magnetic sleeve 4 and the outer magnetic sleeve 3. When the motor 1 drives the outer magnetic sleeve 3 to rotate through the outer magnetic sleeve flange 2, the outer magnetic sleeve 3 drives the inner magnetic sleeve 4 to rotate because the outer magnetic sleeve 3 and the inner magnetic sleeve 4 are in a mutual adsorption state.
The driving shaft 6 penetrates through the shaft sleeve 7, a second circular flange 71 is arranged at one end, close to the first circular flange 51, of the shaft sleeve 7, and the second circular flange 71 is fixedly connected with the first circular flange 51 arranged on the outer side of the opening end of the isolation cover 5 in a threaded mode. The second annular flange 71 and the first annular flange 51 are connected to fix the shielding case 5. And a third circular flange 72 is arranged at one end, far away from the first circular flange 51, of the shaft sleeve 7, and the third circular flange 72 is connected with the wall 8 of the sealed cavity installation cavity. A first O-shaped groove 711 is formed in the side face, close to the first circular flange 51, of the second circular flange 71, a first O-shaped ring 712 is arranged in the first O-shaped groove 711, a second O-shaped groove is formed in the side face, close to the sealing chamber mounting cavity wall 8, of the third circular flange 72, and a second O-shaped ring is arranged in the second O-shaped groove. The support rod 12 is further included, and the support rod 12 is connected with the motor 1 and the second circular flange 71. The second annular flange 71 is fixed by the support rod 12, and the shaft sleeve 7 is further fixed. A groove is formed in the shaft sleeve 7, a bearing 73 is arranged in the groove, and the driving shaft 6 penetrates through the bearing 73. The bearing 73 fixes the drive shaft 6 without hindering the rotation of the drive shaft 6. The inner magnetic sleeve is characterized by further comprising a driving gear 9, and one end, far away from the inner magnetic sleeve 4, of the driving shaft 6 penetrates through the driving gear 9.
The working principle is as follows: starting motor 1, motor output shaft 11 is rotatory, and output shaft 11 drives outer magnet sleeve flange 2 rotatory to outer magnet sleeve 3 is rotatory, is the magnetic mutual adsorption setting because of being between inner magnet sleeve 4 and the outer magnet sleeve 3, therefore outer magnet sleeve 3 can drive inner magnet sleeve 4 rotatory, and inner magnet sleeve 4 is rotatory to drive shaft 6 rotatory, and then drives drive gear 9 and rotate.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. A rotary driving device is characterized by comprising a motor (1) and an outer magnetic sleeve flange (2), wherein the outer magnetic sleeve flange (2) is connected with an output shaft (11) of the motor (1), the rotary driving device also comprises a magnetic coupling and a driving shaft assembly, the magnetic coupling comprises an outer magnetic sleeve (3), an inner magnetic sleeve (4) and an isolation cover (5), the outer magnetic sleeve (3) is connected with the outer magnetic sleeve flange (2) through bolts, the isolation cover (5) is arranged in a through hole of the outer magnetic sleeve (3), one end of the isolation cover (5) far away from the motor (1) is provided with an opening, the inner magnetic sleeve (4) is arranged in the isolation cover (5), the isolation cover (5) is in clearance fit with the inner magnetic sleeve (4) and the outer magnetic sleeve (3), and the inner magnetic sleeve (4) and the outer magnetic sleeve (3) are arranged in a mutually adsorbing manner, the driving shaft assembly comprises a driving shaft (6), one end of the driving shaft (6) penetrates through a through hole which is axially formed in the inner magnetic sleeve (4) to be fixedly assembled, and the inner magnetic sleeve (4) rotates to drive the driving shaft (6) to rotate.
2. A rotary drive device according to claim 1, characterized in that the drive shaft assembly further comprises a drive gear (9), the end of the drive shaft (6) remote from the inner jacket (4) being connected to the drive gear (9).
3. A rotary driving device according to claim 2, further comprising a shaft sleeve (7), wherein the driving shaft (6) passes through the shaft sleeve (7), a first annular flange (51) is arranged outside the open end of the isolation cover (5), a second annular flange (71) is arranged at one end of the shaft sleeve (7) close to the first annular flange (51), and the first annular flange (51) and the second annular flange (71) are fixedly connected through screw threads.
4. A rotary drive as claimed in claim 3, characterized in that the second annular flange (71) is provided with a first O-ring groove (711) on the side adjacent to the first annular flange (51), the first O-ring groove (711) being provided with a first O-ring (712).
5. A rotary drive device according to claim 4, further comprising a sealing chamber mounting chamber wall (8), wherein a third annular flange (72) is arranged at an end of the shaft sleeve (7) away from the first annular flange (51), the sealing chamber mounting chamber wall (8) is connected with the third annular flange (72), a second O-shaped groove is arranged on a side surface of the third annular flange (72) close to the sealing chamber mounting chamber wall (8), and a second O-shaped ring is arranged in the second O-shaped groove.
6. A rotary drive as claimed in claim 5, further comprising a support rod (12), the support rod (12) connecting the motor (1) and the second annular flange (71).
7. A rotary drive as claimed in any one of claims 3 to 6, characterized in that the shaft sleeve (7) is provided with a recess, in which recess a bearing (73) is provided, the drive shaft (6) passing through the bearing (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122181482.3U CN215911997U (en) | 2021-09-09 | 2021-09-09 | Rotary driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122181482.3U CN215911997U (en) | 2021-09-09 | 2021-09-09 | Rotary driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215911997U true CN215911997U (en) | 2022-02-25 |
Family
ID=80294327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122181482.3U Active CN215911997U (en) | 2021-09-09 | 2021-09-09 | Rotary driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215911997U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115541926A (en) * | 2022-12-01 | 2022-12-30 | 中国科学院深海科学与工程研究所 | Self-powered current meter applied to ocean flow field flow velocity measurement |
-
2021
- 2021-09-09 CN CN202122181482.3U patent/CN215911997U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115541926A (en) * | 2022-12-01 | 2022-12-30 | 中国科学院深海科学与工程研究所 | Self-powered current meter applied to ocean flow field flow velocity measurement |
| CN115541926B (en) * | 2022-12-01 | 2023-03-24 | 中国科学院深海科学与工程研究所 | Self-powered current meter applied to ocean flow field flow velocity measurement |
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