A high-stability magnetic suspension bearing and magnetic suspension vacuum pump thereof

Abstract

The present invention provides a high-stability magnetic levitation bearing and a magnetic levitation vacuum pump thereof, comprising a shell, a rotating shaft is provided in the middle of the shell, an adjusting structure is provided between the rotating shaft and the shell, a positioning structure is connected between the adjusting structure and the shell, a mounting structure is provided at the end of the shell, and a cooling structure is provided in the middle of the shell. The present invention can adjust the distance between the electromagnet and the rotating shaft through the adjusting structure to adapt to rotating shafts of different thicknesses. A positioning structure is connected between the adjusting structure and the shell, and the fixing effect of the electromagnet position can be improved through the positioning structure. A mounting structure is provided at the end of the shell, and the consistency of the axis can be ensured when the rotating shaft and the bearing are installed through the mounting structure. A cooling structure is provided in the middle of the shell, and the device can be cooled down when necessary through the cooling structure.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic suspension vacuum pump structure design, and in particular relates to a high-stability magnetic suspension bearing and a magnetic suspension vacuum pump thereof. Background Art

[0002] A magnetic levitation vacuum pump is a vacuum pump device that uses a magnetic levitation bearing. The magnetic levitation bearing makes the rotor of the vacuum pump suspended in the air, thereby ignoring the influence of friction when the rotor rotates, achieving the best energy efficiency conversion and having the characteristics of low noise. The magnetic levitation bearing is a device that uses the properties of a magnet to keep the central rotating shaft suspended and rotating.

[0003] However, for shafts of different thicknesses, the magnetic bearing may have different suspension effects. At the same time, existing magnetic bearings usually use radial magnetic bearings and magnetic bearings to simultaneously ensure the stability of the spatial position of the shaft during rotation, which makes the disassembly and assembly between the bearing and the shaft more troublesome. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a high-stability magnetic suspension bearing and a magnetic suspension vacuum pump thereof.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0006] A high-stability magnetic bearing comprises a shell, a rotating shaft is provided in the middle of the shell, an adjustment structure is provided between the rotating shaft and the shell, the adjustment structure comprises an electromagnet, a plurality of electromagnets are slidably provided on the inner side of the shell, the plurality of electromagnets are distributed in a ring shape on the side of the rotating shaft, a lifting rod is fixedly connected to the end of the electromagnet, a sixth spring is fixedly connected between the end of the lifting rod and the shell, a tooth groove is provided on the side of the lifting rod, a gear ring is rotatably connected to the middle of the shell, the side of the gear ring is meshed with the lifting rod through the tooth groove, and a gear is meshed on the other side of the gear ring.

[0007] As a preferred solution of this embodiment, a positioning structure is connected between the adjustment structure and the shell, and the positioning structure includes a rotating rod. The top side of the shell is rotatably connected to the rotating rod, the bottom end of the rotating rod is fixedly connected to the gear, and a pressing block is slidably connected to both sides of the rotating rod.

[0008] As a preferred solution of this embodiment, a positioning column is fixedly connected to the bottom side of the pressing block, a first spring is fixedly connected between the pressing block and the rotating rod, a positioning groove is opened on the outer shell, and the positioning column is engaged with the outer shell through the positioning groove.

[0009] As a preferred solution of this embodiment, a mounting structure is provided at the end of the shell, and the mounting structure includes a pushing plate, and the end of the rotating shaft is fixedly connected to the pushing plate, and a first stop block and a second stop block are respectively provided on both sides of the pushing plate, and the first stop block and the second stop block are installed on the inner side of the shell, and the side surfaces of the first stop block and the second stop block are in contact with each other, and coils are installed on one side of the first stop block and the second stop block and the pushing plate camera.

[0010] As a preferred solution of this embodiment, a clamping rod is slidably connected to the inner side of the second stop block, a third spring is fixedly connected between the clamping rod and the second stop block, the end of the clamping rod is rotatably connected to the first pulley, and the other end of the clamping rod is a hemispherical structure.

[0011] As a preferred solution of this embodiment, an inner sliding rod is vertically provided at the end of the clamping rod, and the inner sliding rod is slidably connected to the second stop block. An avoidance groove is provided on the inner sliding rod, and the spherical end of the clamping rod is in contact with the inner sliding rod through the avoidance groove. A second spring is fixedly connected between the inner sliding rod and the second stop block, and the end of the inner sliding rod is in contact with the first stop block.

[0012] As a preferred solution of this embodiment, a cooling structure is provided in the middle of the outer shell, and the cooling structure includes a fan. The inner side of the outer shell is rotatably connected to the fan, and a conversion rod is provided on the top side of the fan. The end of the conversion rod is rotatably connected to two second pulleys, and the conversion rod is slidably connected to the inner side of the fan through the second pulleys. The outer shell is provided with ventilation holes on both sides of the fan.

[0013] As a preferred solution of this embodiment, a fixed sleeve is fixedly connected to the rotating shaft, a connecting groove is opened on the side of the fixed sleeve, a ramp block is slidably connected to the inner side of the fan, a fourth spring is fixedly connected between the ramp block and the fan, and the width of the ramp block is the same as the width of the connecting groove.

[0014] As a preferred solution of this embodiment, the conversion rod is in an "L"-shaped structure, the end of the conversion rod is slidably connected to a fixed rod, a fifth spring is fixedly connected between the fixed rod and the conversion rod, a socket is provided on the outer shell, and the end of the fixed rod is engaged with the outer shell through the socket.

[0015] An embodiment of the present invention further provides a magnetic levitation vacuum pump, comprising a pump body and the high-stability magnetic levitation bearing, wherein the high-stability magnetic levitation bearing is arranged on the pump body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The high-stability magnetic bearing described in the present invention has an adjustment structure between the rotating shaft and the housing, through which the distance between the electromagnet and the rotating shaft can be adjusted to adapt to rotating shafts of different thicknesses. A positioning structure is connected between the adjustment structure and the housing, and the positioning structure can improve the fixing effect of the electromagnet position. An installation structure is provided at the end of the housing, and the installation structure can ensure the consistency of the axis when the rotating shaft and the bearing are installed. A cooling structure is provided in the middle of the housing, and the cooling structure can be used to cool the device when necessary. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the overall structure of a high-stability magnetic bearing provided by the present invention;

[0020] Figure 2 It is a schematic diagram of the connection structure between the housing and the rotating shaft of the present invention;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A shown;

[0022] Figure 4 for Figure 2 The enlarged structural diagram of part B is shown;

[0023] Figure 5 for Figure 2 The enlarged structural diagram of the C part is shown;

[0024] Figure 6 It is a schematic diagram of the connection structure between the housing and the gear ring of the present invention;

[0025] Figure 7 It is a schematic diagram of the connection structure between the rotating shaft and the second stop block of the present invention;

[0026] Figure 8 It is a schematic diagram of the connection structure between the housing and the fan of the present invention;

[0027] Fig. 9 for Figure 8 The enlarged structural diagram of the D part shown;

[0028] Fig.10 It is a schematic diagram of the connection structure of the housing and the positioning groove of the present invention.

[0029] As shown in the figure: 1. Shell; 2. Rotating shaft; 3. Positioning structure; 301. Rotating rod; 302. Pressing block; 303. First spring; 304. Positioning column; 305. Positioning groove; 4. Mounting structure; 401. First stop block; 402. Pushing plate; 403. Second stop block; 404. Coil; 405. Inner slide bar; 406. Second spring; 407. Clamping rod; 408. Third spring; 409. First pulley; 410. Avoidance slot; 5, cooling structure; 501, conversion rod; 502, ventilation hole; 503, fixing sleeve; 504, connecting slot; 505, fan; 506, inclined block; 507, fourth spring; 508, second pulley; 509, fixing rod; 510, jack; 511, fifth spring; 6, adjustment structure; 601, electromagnet; 602, lifting rod; 603, sixth spring; 604, tooth groove; 605, gear ring; 606, gear. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments. The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0031] Embodiment 1 :

[0032] See also Figure 2 , Figure 3 , Figure 5 As shown, an embodiment of the present invention provides a high-stability magnetic bearing, including a shell 1, a rotating shaft 2 is provided in the middle of the shell 1, an adjusting structure 6 is provided between the rotating shaft 2 and the shell 1, a positioning structure 3 is connected between the adjusting structure 6 and the shell 1, a mounting structure 4 is provided at the end of the shell 1, and a cooling structure 5 is provided in the middle of the shell 1. In this embodiment, the distance between the electromagnet 601 and the rotating shaft 2 can be adjusted by the adjusting structure 6 to adapt to the rotating shaft 2 of different thicknesses. The positioning structure 3 is connected between the adjusting structure 6 and the shell 1, and the fixing effect of the position of the electromagnet 601 can be improved by the positioning structure 3. The mounting structure 4 is provided at the end of the shell 1, and the consistency of the axis can be ensured when the rotating shaft 2 and the bearing are installed. A cooling structure 5 is provided in the middle of the shell 1, and the cooling structure 5 can be used to cool the device when necessary.

[0033] See also Figure 2 , Figure 3 , Figure 6 As shown, the adjustment structure 6 specifically includes an electromagnet 601, and a plurality of electromagnets 601 are slidably provided on the inner side of the housing 1, and the plurality of electromagnets 601 are distributed in a ring shape on the side of the rotating shaft 2, and the end of the electromagnet 601 is fixedly connected to a lifting rod 602, and a sixth spring 603 is fixedly connected between the end of the lifting rod 602 and the housing 1. A tooth groove 604 is provided on the side of the lifting rod 602, and a gear ring 605 is rotatably connected to the middle of the housing 1, and the side of the gear ring 605 is meshed with the lifting rod 602 through the tooth groove 604. A gear 606 is meshed on the other side of the gear ring 605, and the distance between the electromagnet 601 and the rotating shaft 2 can be adjusted by the adjustment structure 6 to adapt to the rotating shaft 2 of different thicknesses.

[0034] Specifically in this embodiment, firstly, in order to ensure that the distance between the electromagnet 601 and the rotating shaft 2 is of appropriate size, thereby ensuring that there is no other mechanical contact while the rotating shaft 2 rotates smoothly, the distance between the electromagnet 601 and the rotating shaft 2 can be adjusted, and a gear 606 is provided on the inner side of the outer shell 1. When the gear 606 rotates, it will drive the lifting rod 602 on the top side of the electromagnet 601 to slide through the gear ring 605. Since the lifting rod 602 at the end of the electromagnet 601 surrounding the rotating shaft 2 is meshed with the gear ring 605 through the tooth groove 604 at the same time, the rotation of the gear ring 605 will adjust the position of all the electromagnets 601, thereby achieving the purpose of adjusting the distance between the electromagnet 601 and the rotating shaft 2, and facilitating the installation of rotating shafts 2 of different thicknesses.

[0035] See also Figure 1 , Figure 3 , Figure 6 , Fig.10 As shown, the positioning structure 3 specifically includes a rotating rod 301, the top side of the housing 1 is rotatably connected with the rotating rod 301, and the bottom end of the rotating rod 301 is fixedly connected to the gear 606. A pressing block 302 is slidably connected to both sides of the rotating rod 301, and a positioning column 304 is fixedly connected to the bottom side of the pressing block 302. A first spring 303 is fixedly connected between the pressing block 302 and the rotating rod 301. A positioning groove 305 is provided on the housing 1, and the positioning column 304 is engaged with the housing 1 through the positioning groove 305. The positioning structure 3 can improve the fixing effect of the position of the electromagnet 601.

[0036] Specifically in the present embodiment, a rotating rod 301 is fixedly connected to the gear 606, and the user can adjust the position of the electromagnet 601 by rotating the rotating rod 301. In order to improve the fixing effect of the position of the electromagnet 601, a pressing block 302 is provided on the inner side of the rotating rod 301. When the user presses the pressing block 302, the positioning column 304 on the bottom side of the pressing block 302 will slide toward the annular position of the positioning groove 305. At this time, the user can rotate the rotating rod 301 at will, and after completing the adjustment, the user can release the pressing block 302. At this time, the pressing block 302 is reset, and the positioning column 304 will slide to one side of the positioning groove 305, so that the positioning column 304 is engaged with the shell 1, thereby ensuring the stability of the current position of the electromagnet 601.

[0037] See also Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 As shown, the mounting structure 4 specifically includes a push plate 402, the end of the rotating shaft 2 is fixedly connected with the push plate 402, and the two sides of the push plate 402 are respectively provided with a first stop block 401 and a second stop block 403, and the first stop block 401 and the second stop block 403 are installed on the inner side of the housing 1. The sides of the first stop block 401 and the second stop block 403 are in conflict with each other, and the first stop block 401 and the second stop block 403 are both installed with a coil 404 on one side of the camera of the push plate 402, and the inner side of the second stop block 403 is slidably connected with a clamping rod 407. A third spring 408 is fixedly connected between the clamping rod 407 and the second stop block 403, and the end of the clamping rod 407 is rotatably connected with a first pulley 409, and the other end of the clamping rod 407 is a hemispherical structure, and an inner sliding rod 405 is vertically provided at the end of the clamping rod 407, and the inner sliding rod 405 is slidably connected with the second stop block 403. The inner slide bar 405 is provided with an avoidance groove 410, and the spherical end of the clamping rod 407 contacts the inner slide bar 405 through the avoidance groove 410. A second spring 406 is fixedly connected between the inner slide bar 405 and the second stop block 403, and the end of the inner slide bar 405 contacts the first stop block 401. The mounting structure 4 can ensure the consistency of the axis when the rotating shaft 2 and the bearing are installed.

[0038] Specifically, in this embodiment, in order to facilitate the installation between the rotating shaft 2 and the bearing, the rotating shaft 2 is placed in the housing 1 and the push plate 402 is fixed. At this time, the second stop block 403 is located on one side of the push plate 402. At the same time, the clamping rod 407 on the inner side of the second stop block 403, under the push of the third spring 408, the first pulley 409 at the end thereof will conflict with the side surface of the rotating shaft 2, and at the same time, the other end of the clamping rod 407 will conflict with the inner slide rod 405, thereby ensuring the supporting effect of the clamping rod 407 on the rotating shaft 2. Due to the supporting effect of multiple first pulleys 409, the rotating shaft 2 is ensured to be at the axial center position of the bearing. After the first stop block 401 and the second stop block 403 are fixed, the first stop block 401 pushes the protruding part of the inner slide bar 405 on the side of the second stop block 403. At this time, the inner slide bar 405 slides, causing the avoidance groove 410 on the inner slide bar 405 to be aligned with the end of the clamping rod 407. At this time, the spherical end of the clamping rod 407 slides into the avoidance groove 410. At this time, the first pulley 409 at the end of the clamping rod 407 no longer conflicts with the rotating shaft 2, thereby ensuring the suspended state of the rotating shaft 2. The positioning effect of the first pulley 409 ensures that the rotating shaft 2 is on the axis during the installation process, thereby improving the installation accuracy.

[0039] See also Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 As shown, the cooling structure 5 specifically includes a fan 505, the inner side of the housing 1 is rotatably connected with the fan 505, the top side of the fan 505 is provided with a conversion rod 501, the end of the conversion rod 501 is rotatably connected with two second pulleys 508, and the conversion rod 501 is slidably connected to the inner side of the fan 505 through the second pulleys 508. The housing 1 is provided with ventilation holes 502 on both sides of the fan 505, a fixing sleeve 503 is fixedly connected to the rotating shaft 2, and a connecting groove 504 is provided on the side of the fixing sleeve 503. The inner side of the fan 505 is slidably connected with an inclined surface block 506, and a fourth spring 507 is fixedly connected between the inclined surface block 506 and the fan 505, and the width of the inclined surface block 506 is the same as the width of the connecting groove 504. The conversion rod 501 is in an "L"-shaped structure, and the end of the conversion rod 501 is slidably connected to a fixed rod 509, and a fifth spring 511 is fixedly connected between the fixed rod 509 and the conversion rod 501. The housing 1 is provided with a plug hole 510, and the end of the fixed rod 509 is engaged with the housing 1 through the plug hole 510. The cooling structure 5 can cool the device when necessary.

[0040] Specifically in the present embodiment, since the electromagnet 601 will generate heat after working for a long time, the user can rotate the conversion rod 501 located on the side of the housing 1, so that the two second pulleys 508 on the bottom side of the conversion rod 501 rotate simultaneously. Since one of the second pulleys 508 and the conversion rod 501 are located on the same straight line, when the conversion rod 501 rotates, the other second pulley 508 will turn to the other side and push the fan 505 to the side. As the fan 505 moves, the inclined surface block 506 on the inner side of the fan 505 will slide to conflict with the fixing sleeve 503 on the rotating shaft 2 through the inclined surface effect. As the rotating shaft 2 rotates, the inclined surface block 506 The surface block 506 will eventually slide into the connecting groove 504 on the fixing sleeve 503. At this time, the rotating shaft 2 will drive the fan 505 to rotate at the same time. After the fan 505 rotates, it will drive the airflow to flow in the ventilation hole 502 of the outer shell 1, thereby dissipating the heat of the device to ensure long-term operation of the device. After the heat dissipation is completed, it is only necessary to reset the conversion rod 501. In order to locate the position of the conversion rod 501, a fixing rod 509 is provided at the end of the conversion rod 501. By engaging the end of the fixing rod 509 with the two sockets 510 on both sides, the different rotation positions of the conversion rod 501 can be fixed to ensure the stability of the fan 505 during rotation.

[0041] Embodiment 2 :

[0042] On the basis of the first embodiment, this embodiment further provides a magnetic levitation vacuum pump, including a pump body and the high-stability magnetic levitation bearing in the first embodiment, wherein the high-stability magnetic levitation bearing is arranged on the pump body.

[0043] When the present invention is in use, firstly, in order to ensure that the distance between the electromagnet 601 and the rotating shaft 2 is of an appropriate size, thereby ensuring that there is no other mechanical contact while the rotating shaft 2 rotates smoothly, the distance between the electromagnet 601 and the rotating shaft 2 can be adjusted, and a gear 606 is provided on the inner side of the housing 1. When the gear 606 rotates, the lifting rod 602 on the top side of the electromagnet 601 is driven to slide through the gear ring 605. Since the lifting rod 602 at the end of the electromagnet 601 surrounding the rotating shaft 2 is meshed with the gear ring 605 through the tooth groove 604 at the same time, the rotation of the gear ring 605 will adjust the position of all the electromagnets 601, thereby achieving the purpose of adjusting the distance between the electromagnet 601 and the rotating shaft 2, which is convenient for rotating shafts 2 of different thicknesses. The installation of the gear 606 is fixedly connected with a rotating rod 301, and the user can adjust the position of the electromagnet 601 by rotating the rotating rod 301. In order to improve the fixing effect of the position of the electromagnet 601, a pressing block 302 is provided on the inner side of the rotating rod 301. When the user presses the pressing block 302, the positioning column 304 on the bottom side of the pressing block 302 will slide to the annular position of the positioning groove 305. At this time, the user can rotate the rotating rod 301 at will, and after the adjustment is completed, the user can release the pressing block 302. At this time, the pressing block 302 is reset, and the positioning column 304 will slide to one side of the positioning groove 305, so that the positioning column 304 is engaged with the shell 1, thereby ensuring the stability of the current position of the electromagnet 601. The rotating shaft 2 is installed between the shaft and the bearing, and the rotating shaft 2 is placed in the housing 1 and the pushing plate 402 is fixed. At this time, the second stop block 403 is located on one side of the pushing plate 402, and at the same time, the clamping rod 407 on the inner side of the second stop block 403, under the push of the third spring 408, the first pulley 409 at the end thereof will conflict with the side of the rotating shaft 2, and at the same time, the other end of the clamping rod 407 will conflict with the inner sliding rod 405, thereby ensuring the supporting effect of the clamping rod 407 on the rotating shaft 2. Due to the supporting effect of multiple first pulleys 409, the rotating shaft 2 is ensured to be at the axial position of the bearing. After the first stop block 401 and the second stop block 403 are fixed, the first stop block 401 will push the protruding part of the inner sliding rod 405 on the side of the second stop block 403. At this time, the inner The slide bar 405 slides, causing the avoidance groove 410 on the inner slide bar 405 to align with the end of the clamping rod 407. At this time, the spherical end of the clamping rod 407 slides into the avoidance groove 410. At this time, the first pulley 409 at the end of the clamping rod 407 no longer conflicts with the rotating shaft 2, thereby ensuring the suspended state of the rotating shaft 2. The positioning effect of the first pulley 409 ensures that the rotating shaft 2 is on the axis during the installation process, thereby improving the installation accuracy. Since the electromagnet 601 will generate heat after working for a long time, the user can rotate the conversion rod 501 on the side of the shell 1 at this time, so that the two second pulleys 508 on the bottom side of the conversion rod 501 rotate at the same time. Since one of the second pulleys 508 is located on the same straight line as the conversion rod 501, when the conversion rod 501 rotates,The other second pulley 508 will turn to the other side and push the fan 505 to the side at the same time. As the fan 505 moves, the inclined block 506 on the inner side of the fan 505 will slide to conflict with the fixed sleeve 503 on the shaft 2 through the inclined surface effect. As the shaft 2 rotates, the inclined block 506 will eventually slide into the connecting groove 504 on the fixed sleeve 503. At this time, the shaft 2 will drive the fan 505 to rotate at the same time. After the fan 505 rotates, it will drive the air flow to flow in the ventilation hole 502 of the shell 1, thereby dissipating the heat of the device and ensuring the long-term operation of the device. After the heat dissipation is completed, it is only necessary to reset the conversion rod 501. In order to locate the position of the conversion rod 501, a fixing rod 509 is provided at the end of the conversion rod 501. By engaging the end of the fixing rod 509 with the two sockets 510 on both sides, the different rotation positions of the conversion rod 501 can be fixed to ensure the stability of the fan 505 during rotation.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-stability magnetic bearing, characterized in that: The invention comprises a shell (1), a rotating shaft (2) is arranged in the middle of the shell (1), an adjusting structure (6) is arranged between the rotating shaft (2) and the shell (1), the adjusting structure (6) comprises an electromagnet (601), a plurality of electromagnets (601) are slidably arranged on the inner side of the shell (1), the plurality of electromagnets (601) are distributed in a ring shape on the side of the rotating shaft (2), the end of the electromagnet (601) is fixedly connected with a lifting rod (602), a sixth spring (603) is fixedly connected between the end of the lifting rod (602) and the shell (1), a tooth groove (604) is arranged on the side of the lifting rod (602), a gear ring (605) is rotatably connected to the middle of the shell (1), the side of the gear ring (605) is meshed with the lifting rod (602) through the tooth groove (604), and the other side of the gear ring (605) is meshed with a gear (606).

2. The high stability magnetic bearing according to claim 1, characterized in that: A positioning structure (3) is connected between the adjustment structure (6) and the housing (1), and the positioning structure (3) comprises a rotating rod (301). The top side of the housing (1) is rotatably connected to the rotating rod (301), the bottom end of the rotating rod (301) is fixedly connected to a gear (606), and a pressing block (302) is slidably connected to each of the two sides of the rotating rod (301).

3. The high stability magnetic bearing according to claim 2, characterized in that: A positioning column (304) is fixedly connected to the bottom side of the pressing block (302), a first spring (303) is fixedly connected between the pressing block (302) and the rotating rod (301), a positioning groove (305) is provided on the outer shell (1), and the positioning column (304) is engaged with the outer shell (1) through the positioning groove (305).

4. The high stability magnetic bearing according to claim 1, characterized in that: The end of the housing (1) is provided with a mounting structure (4), and the mounting structure (4) includes a pushing disk (402). The end of the rotating shaft (2) is fixedly connected to the pushing disk (402), and the two sides of the pushing disk (402) are respectively provided with a first stop block (401) and a second stop block (403). The first stop block (401) and the second stop block (403) are installed on the inner side of the housing (1), and the side surfaces of the first stop block (401) and the second stop block (403) are in contact with each other. The first stop block (401) and the second stop block (403) and one side of the pushing disk (402) camera are both provided with a coil (404).

5. The high stability magnetic bearing according to claim 4, characterized in that: The inner side of the second stop block (403) is slidably connected to a clamping rod (407), a third spring (408) is fixedly connected between the clamping rod (407) and the second stop block (403), an end of the clamping rod (407) is rotatably connected to a first pulley (409), and the other end of the clamping rod (407) is a hemispherical structure.

6. The high stability magnetic bearing according to claim 5, characterized in that: An inner slide bar (405) is vertically arranged at the end of the clamping rod (407), and the inner slide bar (405) is slidably connected to the second stop block (403). An avoidance groove (410) is provided on the inner slide bar (405), and the spherical end of the clamping rod (407) contacts the inner slide bar (405) through the avoidance groove (410). A second spring (406) is fixedly connected between the inner slide bar (405) and the second stop block (403), and the end of the inner slide bar (405) contacts the first stop block (401).

7. The high stability magnetic bearing according to claim 1, characterized in that: A cooling structure (5) is provided in the middle of the housing (1), and the cooling structure (5) includes a fan (505). The inner side of the housing (1) is rotatably connected to the fan (505), and a conversion rod (501) is provided on the top side of the fan (505). The end of the conversion rod (501) is rotatably connected to two second pulleys (508). The conversion rod (501) is slidably connected to the inner side of the fan (505) via the second pulleys (508), and the housing (1) is provided with ventilation holes (502) on both sides of the fan (505).

8. The high stability magnetic bearing according to claim 7, characterized in that: A fixing sleeve (503) is fixedly connected to the rotating shaft (2), a connecting groove (504) is provided on the side of the fixing sleeve (503), an inclined plane block (506) is slidably connected to the inner side of the fan (505), a fourth spring (507) is fixedly connected between the inclined plane block (506) and the fan (505), and the width of the inclined plane block (506) is the same as the width of the connecting groove (504).

9. The high stability magnetic bearing according to claim 7, characterized in that: The conversion rod (501) is in an "L"-shaped structure. The end of the conversion rod (501) is slidably connected to a fixed rod (509). A fifth spring (511) is fixedly connected between the fixed rod (509) and the conversion rod (501). The housing (1) is provided with a plug hole (510). The end of the fixed rod (509) is engaged with the housing (1) via the plug hole (510).

10. A magnetic levitation vacuum pump, comprising a pump body, characterized in that: The invention comprises the high-stability magnetic bearing according to any one of claims 1 to 9, wherein the high-stability magnetic bearing is arranged on a pump body.

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