Magnetic levitation support system and magnetic levitation magnetic force driver

Abstract

Magnetic suspension supporting system and magnetic suspension magnetic force driver. The main problem of the current magnetic force driver internal supporting system is that the chemical inert lubricating grease or full ceramic bearing scheme is used, and the supporting system is exposed in the medium environment. The first magnetic ring assembly (3) is arranged on the outer wall of the rotating shaft, and the second magnetic ring assembly (4) matched with the first magnetic ring assembly is arranged in the support; the first magnetic ring assembly and the second magnetic ring assembly are coaxially arranged; the first magnetic ring assembly comprises a permanent magnet ring (31) and a sleeve ring (32) made of soft magnetic material, and the permanent magnet ring is used for magnetizing the sleeve ring. The magnetic suspension supporting system and the magnetic suspension magnetic force driver are provided, the mechanism of magnetic suspension is adopted to realize that the device does not need to specially design a lubricating system, the medium is not polluted, the high cleanliness production requirement is realized, the wear problem of the traditional rolling bearing and the transmission shaft is avoided, the transmission resistance is reduced, and the efficiency of the transmission device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of magnetic drive, in particular to a magnetic levitation supporting system and a magnetic levitation magnetic drive. BACKGROUND

[0002] The magnetic drive is a kind of sealed transmission device which uses permanent magnet material to achieve magnetic coupling between driving part and driven part, realizes non-contact and non-leakage transmission of torque. It is widely used in food, pharmaceutical, petrochemical and other industries, completely eliminates the leakage of toxic, harmful, flammable, explosive, strong acid, strong alkali and other strong corrosive media.

[0003] The magnetic drive indirectly transmits torque by isolating the inner and outer parts of the driven part and the driving part with an isolation sleeve, and each part needs a set of bearing supporting structure. The bearing supporting structure of the driven part is directly exposed to the medium environment of the reaction kettle, and the key components such as bearings and lubricating grease are directly in contact with the gas phase medium, which is also the inherent deficiency of the magnetic drive. The corrosion resistance of the bearing and the stability of the lubricating grease are directly related to the service life of the magnetic drive. If the medium environment in the reaction kettle is harsh, such as strong solvent and strong corrosion, the lubricating grease will be damaged and the bearing will be damaged, and the maintenance cycle of the magnetic drive will be short. In addition, as a rotating part, the bearing cannot be reliably sealed, and the lubricating grease inside the bearing may leak into the kettle body, thereby polluting the medium in the kettle and directly affecting the purity and quality of the product. With the improvement of industry testing technology, the extremely small amount of impurities in the medium also becomes unescapable, and stricter requirements are put forward for the purity of the medium. At present, pharmaceutical and intermediate production enterprises urgently need to solve this problem.

[0004] At present, there is no great breakthrough in the research of internal supporting system of magnetic drive at home and abroad. For example, improving the sealing form of internal bearing, improving the structure of driven part bearing seat, using chemical inert lubricating grease, using all-ceramic bearing, etc. cannot fundamentally solve the fact that the supporting system is exposed to the medium environment. SUMMARY

[0005] In order to overcome the shortcomings of the background art, the present application provides a magnetic levitation supporting system and a magnetic levitation magnetic drive, which mainly solves the problem that the internal supporting system of the current magnetic drive uses chemical inert lubricating grease or all-ceramic bearing scheme, and the supporting system is exposed to the medium environment.

[0006] The technical scheme adopted by the present application is:

[0007] The magnetic levitation supporting system comprises a support and a rotating shaft, the rotating shaft is rotatably arranged in the support, the rotating shaft has a first magnetic ring assembly on the circumferential outer wall, and the support is provided with a second magnetic ring assembly matched with the first magnetic ring assembly.

[0008] The first magnetic ring assembly comprises a permanent magnetic ring and a sleeve ring made of soft magnetic material, and the permanent magnetic ring is used for magnetizing the sleeve ring.

[0009] The sleeve ring is made of silicon steel.

[0010] The sleeve ring is made of silicon steel.

[0011] The first magnetic ring assembly further comprises a magnetic ring seat, which is sleeved on the circumferential outer wall of the rotating shaft, and the magnetic ring seat is provided with a containing groove, and the permanent magnetic ring and the sleeve ring are arranged in the containing groove.

[0012] The magnetic ring seat is further provided with a protection ring, and the circumferential outer wall of the protection ring protrudes from the circumferential outer wall of the permanent magnetic ring and the circumferential outer wall of the sleeve ring.

[0013] The rotating shaft is provided with a flange, and the support is provided with a limiting ring, and the limiting ring is arranged on the upper and lower sides of the flange.

[0014] The sleeve ring comprises first sleeve rings arranged at two ends, and a plurality of second sleeve rings are arranged between the two first sleeve rings, and the permanent magnetic ring is arranged between the first sleeve ring and the second sleeve ring, and the permanent magnetic ring is arranged between adjacent second sleeve rings.

[0015] The height of the second sleeve ring is less than the height of the permanent magnetic ring.

[0016] The height of the second sleeve ring is twice the height of the first sleeve ring.

[0017] The beneficial effects of the present application are: the present application provides a magnetic suspension support system and a magnetic suspension magnetic force driver, which adopts a magnetic suspension mechanism to realize that the device does not need to be specially designed for a lubrication system, and does not have to worry about medium pollution, so that high cleanliness production requirements can be realized; the wear problems of traditional rolling bearings and transmission shafts are avoided, the transmission resistance is reduced, and the efficiency of the transmission device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a sectional view of an embodiment of the present application.

[0019] Figure 2 It is Figure 1 It is an enlarged schematic view of position A in FIG. 4.

[0020] Figure 3 It is a simple schematic diagram of the magnetic field of a conventional permanent magnet.

[0021] Figure 4 It is a simple schematic diagram of the magnetic field of a permanent magnet of an embodiment of the present application.

[0022] Figure 5 It is a schematic diagram of a magnetic suspension force driver of an embodiment of the present application. DETAILED DESCRIPTION

[0023] The application is further described below with reference to the accompanying drawings: As shown in the drawings, the magnetic levitation support system comprises a support 1 and a rotating shaft 2, which is rotatably arranged in the support, and the rotating shaft has a first magnetic ring assembly 3 on the circumferential outer wall, and the support is provided with a second magnetic ring assembly 4 matched with the first magnetic ring assembly; the first magnetic ring assembly comprises a permanent magnet ring 31 and a sleeve ring 32 made of soft magnetic material, and the permanent magnet ring is used for magnetizing the sleeve ring. The second magnetic ring assembly and the first magnetic ring assembly are matched, the permanent magnet rings of the second magnetic ring assembly and the second magnetic ring assembly are arranged with the same polarity, and the sleeve rings are also provided correspondingly. The magnetic flux flows through the sleeve rings on the outer ring (i.e. the second magnetic ring assembly) and the sleeve rings on the inner ring (i.e. the first magnetic ring assembly), generates repulsive force, and is strengthened, so that the rotating shaft is in a levitation state; as a preferred solution, the permanent magnet rings of the first magnetic ring assembly and the second magnetic ring assembly are both axially magnetized and arranged with the same polarity; the sleeve rings are arranged between the permanent magnet rings, and play a role of guiding magnetism and strengthening magnetism, guiding the axial magnetic flux to the radial direction, and using the sleeve rings as the main force bearing material, improving the strength of the inner and outer ring magnetic force rings; in conventional technology, the magnetic force lines emitted by the permanent magnet will diverge in all directions (see Figure 3 ). Figure 4 ).

[0024] In the application, as shown in the drawings, the sleeve ring is made of silicon steel. Silicon steel has the characteristics of high permeability, low coercive force, and large resistance coefficient.

[0025] In the application, as shown in the drawings, the permanent magnet ring is provided with the sleeve ring on both upper and lower sides. The magnetic force lines can be better guided, and the magnetic field can be enhanced.

[0026] In the application, as shown in the drawings, the first magnetic ring assembly further comprises a magnetic ring seat 33, which is sleeved on the circumferential outer wall of the rotating shaft, and the magnetic ring seat is provided with a containing groove 331, and the permanent magnet ring and the sleeve ring are arranged in the containing groove. The corresponding second magnetic ring assembly can also be provided with an outer magnetic ring seat for mounting the outer permanent magnet and the outer sleeve ring.

[0027] In the application, as shown in the drawings, the magnetic ring seat is further provided with a protection ring 332, and the circumferential outer wall of the protection ring protrudes from the circumferential outer wall of the permanent magnet ring and the circumferential outer wall of the sleeve ring. When the magnetic levitation rotating shaft is radially displaced under force, the first magnetic ring assembly and the second magnetic ring assembly are prevented from colliding. The protection ring can be made of rubber or the like.

[0028] In the application, as shown in the drawings, the rotating shaft is provided with a flange 22, the support is provided with a limiting ring 13, and the limiting ring is provided on the upper and lower sides of the flange. The rotating shaft can be limited in the axial direction, and the use is more stable.

[0029] In the application, as shown in the drawings, the sleeve ring comprises first sleeve rings 321 arranged at both ends, a plurality of second sleeve rings 322 are arranged between the two first sleeve rings, the first sleeve ring and the second sleeve ring are provided with the permanent magnetic ring, and the adjacent second sleeve rings are provided with the permanent magnetic ring. The overall structure is compact, which can better play the role of magnetic conduction and magnetic strengthening.

[0030] In the application, as shown in the drawings, the height of the second sleeve ring is less than the height of the permanent magnetic ring. The leakage magnetic of the first magnetic ring assembly and the second magnetic ring assembly is minimized, and they are in the magnetic flux saturation state.

[0031] In the application, as shown in the drawings, the height of the second sleeve ring is twice the height of the first sleeve ring. The leakage magnetic of the first magnetic ring assembly and the second magnetic ring assembly is minimized, and they are in the magnetic flux saturation state.

[0032] In the application, as shown in the drawings, the magnetic suspension magnetic force driver comprises a rack 51, the rack is provided with an outer magnetic rotor 52 and an inner magnetic rotor 53, and further comprises a magnetic suspension system as described above, and the rotating shaft is connected with the inner magnetic rotor in linkage.

[0033] The embodiments described with reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application. The embodiments should not be regarded as a limitation of the application, but any improvement based on the spirit of the application should be within the protection scope of the application.

Claims

1. A magnetic levitation support system comprising a support (1) and a rotating shaft (2) which is rotatably arranged in the support, characterized in that: The rotating shaft circumferential outer wall has a first magnetic ring assembly (3), and the support is internally provided with a second magnetic ring assembly (4) matched with the first magnetic ring assembly; the first magnetic ring assembly and the second magnetic ring assembly are coaxially arranged; The first magnetic ring assembly comprises a permanent magnetic ring (31) and a sleeve ring (32) made of soft magnetic material, and the permanent magnetic ring is used for magnetizing the sleeve ring; The sleeve ring comprises first sleeve rings (321) arranged at two ends, a plurality of second sleeve rings (322) are arranged between the two first sleeve rings, the permanent magnetic ring is arranged between the first sleeve ring and the second sleeve ring, and the permanent magnetic ring is arranged between adjacent second sleeve rings; The height of the second sleeve ring is less than the height of the permanent magnetic ring; The height of the second sleeve ring is twice the height of the first sleeve ring; The first magnetic ring assembly further comprises a magnetic ring seat (33), the magnetic ring seat is sleeved on the rotating shaft circumferential outer wall, the magnetic ring seat is provided with a containing groove (331), and the permanent magnetic ring and the sleeve ring are arranged in the containing groove; The magnetic ring seat is further provided with a protection ring (332), and the circumferential outer wall of the protection ring protrudes from the circumferential outer wall of the permanent magnetic ring and the circumferential outer wall of the sleeve ring.

2. The magnetic levitation support system according to claim 1, characterized in that: The sleeve ring is made of silicon steel.

3. The magnetic levitation support system according to claim 1, characterized by: The permanent magnetic ring is provided with the sleeve ring on both upper and lower sides.

4. The magnetic levitation support system according to claim 1, characterized by: The rotating shaft is provided with a flange (22), the support is internally provided with a limiting ring (13), and the limiting ring is correspondingly arranged on the upper and lower sides of the flange.

5. A magnetic levitation magnetic drive, comprising a frame (51), the frame is provided with an outer magnetic rotor (52) and an inner magnetic rotor (53), characterized in that: Further comprising the magnetic suspension supporting system according to any one of claims 1-4, and the rotating shaft is connected with the inner magnetic rotor in linkage.

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