CN218771817U

CN218771817U - Magnetic suspension rotating device, magnetic suspension pump and magnetic suspension stirrer

Info

Publication number: CN218771817U
Application number: CN202222590819.0U
Authority: CN
Inventors: 尤志强; 尹成科
Original assignee: Suzhou Suci Intelligent Technology Co ltd
Current assignee: Suzhou Suci Intelligent Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-03-28
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a magnetic suspension rotary device, magnetic suspension pump and magnetic suspension agitator, include: a stator including a stator body, a rotating stator assembly and a floating stator assembly arranged at intervals along a circumference of the stator body; the rotor is arranged around the stator or the stator is arranged around the rotor, the rotor comprises a rotor main body, a rotating rotor assembly and a suspension rotor assembly which are arranged at intervals along the circumference of the rotor main body, an impeller extending towards the direction far away from the center of the rotor is arranged on the rotating rotor assembly or the suspension rotor assembly, and the impeller and the end face of the rotating stator assembly or the suspension stator assembly have an axial preset distance; the rotating rotor assembly and the rotating stator assembly are correspondingly arranged and form a rotating assembly, and the suspension rotor assembly and the suspension stator assembly are correspondingly arranged and form a suspension assembly. The device enables the position of the rotor to be adjusted in the axial direction of the stator according to actual needs, improves the controllability of the magnetic suspension rotating device, and the impeller can move along with the rotor in the axial direction, so that stirring can be more sufficient.

Description

Magnetic suspension rotating device, magnetic suspension pump and magnetic suspension stirrer

Technical Field

The utility model relates to a magnetic suspension device technical field, specific magnetic suspension rotary device, magnetic suspension pump and magnetic suspension agitator.

Background

Magnetic levitation rotating devices are particularly suitable for pumps, mixing and stirring devices, since they have no mechanical bearings, with which very sensitive substances are delivered (for example blood pumps), or with which the purity requirements are very high, for example in the pharmaceutical or biotechnological industry, or with which abrasive or stimulating substances are delivered (for example slurry pumps or mixers in the semiconductor industry), which would quickly destroy the mechanical bearings. Magnetic levitation rotation devices are also used to levitate and rotate wafers in semiconductor manufacturing, for example, when coating or treating wafers with photoresist or other substances.

In the pharmaceutical industry, for example in the production of active pharmaceutical substances, where cleanliness is a high requirement, even the parts that come into contact with these substances often have to be sterile. Similar requirements are also placed on biotechnological aspects, for example in the production, handling or cultivation of biological substances, cells or microorganisms, which must be cleaned in order not to jeopardize the availability of the products produced. Here too, pumps, stirrers or mixing devices are needed to ensure continuous mixing of the nutrient solution, or to ensure its continuous circulation in the mixing tank. In this connection, very high purities have to be ensured in order to protect the material or the products produced from contamination.

Patent No. CN114221580a discloses an electromagnetic rotary drive and rotary device, comprising a stator and an external rotor, the stator including a plurality of stator poles carrying coils to generate electromagnetic rotary fields required for magnetic drive and rotor magnetic levitation, and being provided with windings by which an electromagnetic rotary field is generated in an operating state in which torque is applied to the rotor, and a shear force set as required can be applied to the rotor in a radial direction. Thus, the radial position of the rotor, i.e. its position in a radial plane perpendicular to the axial direction of the stator, can be actively controlled or adjusted. However, the structure of this drive cannot adjust the position of the rotor in the axial direction of the stator, so that the direction of movement of the rotor is limited. And a plurality of blades are arranged between the rotor and the connecting element to realize the stirring effect, but the blades are arranged at the outer edge of the rotor and need to be supported by the connecting element, so that the whole volume of the driver is increased to a certain extent, the using space is further increased, the blades can only realize stirring in one axial direction, and the problems of insufficient stirring and low stirring efficiency can be caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the present application provides a magnetic suspension rotating device, a magnetic suspension pump and a magnetic suspension agitator, which are used for solving at least one of the above problems.

The embodiment of the application discloses a magnetic suspension rotating device, a magnetic suspension pump and a magnetic suspension stirrer, wherein a rotating rotor component and a rotating stator component are correspondingly arranged and form a rotating component, and a suspension rotor component and a suspension stator component are correspondingly arranged and form a suspension component, so that the position of a rotor can be simply, flexibly and accurately adjusted in the axial direction of a stator according to actual needs, and the controllability of the magnetic suspension rotating device is improved; and set up the impeller on the terminal surface of rotatory rotor subassembly or suspension rotor subassembly, need not other connecting piece supports, simplified the structure to a certain extent, reduced rotary device's volume, saved the usage space, further be arranged in pump and agitator again, realize that the fluid passes through the rotor and carries, mix or stir, and the impeller can be along with the rotor displacement in the axial direction for the stirring can be more abundant, stirring efficiency is higher, and then makes magnetic suspension rotary device have wider application prospect.

Wherein, a magnetic suspension rotary device includes:

the stator comprises a stator main body, a rotating stator component and a suspending stator component, wherein the rotating stator component and the suspending stator component are arranged along the circumference of the stator main body at intervals, and the central axes of the rotating stator component and the suspending stator component are coincided;

the rotor is arranged around the stator or the stator is arranged around the rotor, the rotor comprises a rotor main body, a rotating rotor assembly and a suspension rotor assembly, the rotating rotor assembly and the suspension rotor assembly are arranged at intervals along the circumference of the rotor main body, the central axes of the rotating rotor assembly and the suspension rotor assembly are coincident, an impeller extending in the direction far away from the center of the rotor is arranged on the rotating rotor assembly or the suspension rotor assembly, the impeller and the end face of the rotating stator assembly or the suspension stator assembly have an axial preset distance, and the impeller and the rotor can rotate together;

the rotating rotor assembly and the rotating stator assembly are correspondingly arranged to form a rotating assembly, and the suspension rotor assembly and the suspension stator assembly are correspondingly arranged to form a suspension assembly.

Further, the rotating stator assembly includes a rotating magnetic stator substrate and a plurality of rotating coils spaced apart from the rotating magnetic stator substrate adjacent to a circumferential side of the rotor.

Further, the plurality of rotating coils are concentrated windings or distributed windings.

Further, the levitation stator assembly comprises at least one levitation magnetic stator substrate and a plurality of levitation coils, and the plurality of levitation coils are arranged on the circumference side, close to the rotor, of one levitation magnetic stator substrate at intervals.

Furthermore, the suspension magnetic stator substrate is a single stator substrate or two staggered and superposed stator substrates.

Furthermore, the rotating rotor assembly comprises a layer of rotating flange, the suspension rotor assembly comprises a layer of suspension flange, the rotating flange and the suspension flange are respectively arranged on two opposite end faces of the rotor body, and the impeller is arranged on the rotating flange or the suspension flange.

Furthermore, the outer edge of the rotary flange is toothed, and the outer edge of the suspension flange is full circle.

Further, the maximum outer diameter of the rotating flange is equal to the maximum outer diameter of the floating flange.

Further, the rotating flange or the suspension flange and the impeller are integrally formed by machining or casting or 3D printing.

Further, the rotating flange or the suspension flange and the impeller are spliced and formed in a welding or fastener connecting mode.

Further, the rotor body, the rotating rotor assembly and the suspension rotor assembly are integrally formed in a machining or casting or 3D printing mode.

Further, the impeller includes a plurality of blades arranged at equal intervals along the circumference of the rotating rotor assembly or the floating rotor assembly.

Furthermore, the impeller is made of plastic and stainless steel.

Further, rotatory rotor subassembly includes the rotatory flange of one deck, the suspension rotor subassembly includes the multilayer suspension flange, rotatory flange sets up a terminal surface of rotor subject, the multilayer the suspension flange sets gradually rotor subject keeps away from one side of rotatory flange, rotatory flange or be located rotor subject terminal surface be equipped with on the suspension flange the impeller.

Furthermore, the rotating rotor assembly comprises two layers of rotating flanges, the suspending rotor assembly comprises one layer of suspending flanges, the two layers of rotating flanges are respectively arranged on two opposite end faces of the rotor body, the suspending flanges are arranged on the rotor body and located between the two layers of rotating flanges, and the impeller is arranged on the rotating flanges on any layer.

Furthermore, rotatory rotor subassembly includes two-layer rotatory flange, the suspension rotor subassembly includes the multilayer suspension flange, and is two-layer rotatory flange sets up respectively the relative both ends face of rotor subject, the multilayer suspension flange interval sets up on the rotor subject and be located two-layerly between the rotatory flange, arbitrary layer be equipped with on the rotatory flange the impeller.

Further, the rotor is made of a magnetic conductive metal, such as alloy steel, silicon steel sheet, stainless steel, and electrical pure iron.

Furthermore, the rotor is made of a permanent magnet.

Further, still include set up in the rotor with a membrane between the stator, the rotor is located in the membrane and set up on the inner wall of membrane bottom.

Further, an axial distance from the center of the rotor body to the bottom of the impeller extending in the radial direction is H1, and an axial distance from the center of the rotor body to the end surface of the stator adjacent to the impeller is H2, where H1 > H2.

Further, the maximum outer diameter of the impeller is R1, and the maximum outer diameter of the membrane is R2, wherein R1 is less than R2.

Further, the outer edges of the rotor and the impeller are coated with an anti-corrosion coating by injection molding, welding or vapor deposition, and the anti-corrosion coating is prepared from the following materials: PVDF, PFA, PP, parylene, DLC.

The embodiment of the application also discloses a magnetic suspension pump, which comprises the magnetic suspension rotating device.

The embodiment of the application also discloses a magnetic suspension stirrer, which comprises the magnetic suspension rotating device.

The beneficial effects of this practicality are as follows:

1. according to the magnetic suspension rotating device, the rotating rotor component and the rotating stator component are correspondingly arranged to form the rotating component, and the suspension rotor component and the suspension stator component are correspondingly arranged to form the suspension component, so that the position of the rotor can be simply, flexibly and accurately adjusted in the axial direction of the stator according to actual needs, and the controllability of the magnetic suspension rotating device is improved; and set up the impeller on the terminal surface of rotatory rotor subassembly or suspension rotor subassembly, need not other connecting piece supports, simplified the structure to a certain extent, reduced rotary device's volume, saved the usage space, further be arranged in pump and agitator again, realize that the fluid passes through the rotor and carries, mix or stir, and the impeller can be along with the rotor displacement in the axial direction for the stirring can be more abundant, stirring efficiency is higher, and then makes magnetic suspension rotary device have wider application prospect.

2. The material of rotor is the non-permanent magnet, when using in pump or agitator, can not appear the demagnetization phenomenon because of the high temperature of fluid for the rotation performance and the suspension performance of rotor maintain a stable level all the time, and then promote the working property of pump or agitator.

3. By arranging a film between the rotor and the stator, when the rotary device is used in a pump or a stirrer, the stator can not contact fluid, and only the rotor and the film need to be cleaned or replaced, so that the rotary device can be repeatedly used, and when the rotary device is used in the pharmaceutical field or the biotechnology industry, the cleanliness of solution can be improved to a great extent; and the membrane is U-shaped, the bottom of the membrane is flat, the installation is more convenient, and the stirring performance can be further improved.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an exploded view of a magnetic levitation rotating apparatus according to an embodiment of the present invention;

fig. 2 is a first structural schematic diagram of a rotor and an impeller of a magnetic levitation rotating apparatus according to an embodiment of the present invention;

fig. 3 is a second structural schematic diagram of the rotor and the impeller of the magnetic levitation rotating apparatus according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a magnetic levitation rotating apparatus based on a first rotor and impeller structure in the present embodiment;

fig. 5 is a schematic structural diagram of a magnetic levitation rotating apparatus based on a second rotor and impeller structure in the embodiment of the present invention;

fig. 6 is a third structural schematic diagram of the rotor and the impeller of the magnetic levitation rotating apparatus in the embodiment of the present invention;

fig. 7 is a fourth structural diagram of the rotor and the impeller of the magnetic levitation rotating apparatus according to the embodiment of the present invention;

fig. 8 is a schematic structural diagram of a magnetic levitation rotating apparatus based on a fourth rotor and impeller structure in the present embodiment;

fig. 9 is a fifth structural schematic diagram of the rotor and the impeller of the magnetic levitation rotating apparatus according to the embodiment of the present invention;

fig. 10 is a schematic structural diagram of a magnetic levitation rotation device based on a fifth rotor and impeller structure in the present embodiment;

fig. 11 is a schematic structural view of a magnetically levitated rotary device with a film disposed between a rotor and a stator according to an embodiment of the present invention;

FIG. 12 is a schematic sectional view of FIG. 11 taken along the central axis of the rotor;

FIG. 13 is a top view of a magnetically levitated rotary device incorporating membranes in an embodiment of the present invention;

fig. 14 is a schematic sectional view of the magnetic levitation rotating apparatus in the direction of the central axis of the rotor in the present embodiment.

Reference numerals of the above figures: 10. a stator; 11. a stator main body; 12. rotating the stator assembly; 120. rotating the magnetic stator substrate; 121. a rotating coil; 13. a suspended stator assembly; 130. a levitated magnetic stator substrate; 131. a suspension coil; 20. A rotor; 21. a rotor body; 22. rotating the rotor assembly; 220. a rotating flange; 23. a suspended rotor assembly; 230. a floating flange;

30. an impeller; 31. a blade;

40. and (3) a membrane.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative work belong to the protection scope of the present application.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The drawings in this disclosure are not necessarily to scale, the specific dimensions and quantities of the various structures may be determined according to actual requirements. The drawings described in this disclosure are schematic only.

According to the magnetic suspension rotating device, the rotating rotor component and the rotating stator component are correspondingly arranged to form the rotating component, and the suspension rotor component and the suspension stator component are correspondingly arranged to form the suspension component, so that the position of the rotor can be simply, flexibly and accurately adjusted in the axial direction of the stator according to actual needs, and the controllability of the magnetic suspension rotating device is improved; and set up the impeller on the terminal surface of rotatory rotor subassembly or suspension rotor subassembly, need not other connecting piece supports, simplified the structure to a certain extent, reduced rotary device's volume, saved the usage space, further be arranged in pump and agitator again, realize that the fluid passes through the rotor and carries, mix or stir, and the impeller can be along with the rotor displacement in the axial direction for the stirring can be more abundant, stirring efficiency is higher, and then makes magnetic suspension rotary device have wider application prospect.

The present invention will be described in detail with reference to fig. 1 to 14 and the embodiments.

The magnetic suspension rotating device of the embodiment comprises:

the stator 10, the stator 10 includes a stator body 11, a rotating stator assembly 12 and a suspending stator assembly 13, the rotating stator assembly 12 and the suspending stator assembly 13 are arranged along the circumference of the stator body 11 at intervals, and the central axis of the rotating stator assembly 12 coincides with the central axis of the suspending stator assembly 13;

a rotor 20, wherein the rotor 20 is disposed around the stator 10 or the stator 10 is disposed around the rotor 20, the rotor 20 includes a rotor main body 21, a rotating rotor assembly 22 and a suspending rotor assembly 23 disposed at intervals along a circumference of the rotor main body 21, a central axis of the rotating rotor assembly 22 coincides with a central axis of the suspending rotor assembly 23, an impeller 30 extending away from a center of the rotor 20 is disposed on the rotating rotor assembly 22 or the suspending rotor assembly 23, the impeller 30 has an axial preset distance from an end surface of the rotating stator assembly 12 or the suspending stator assembly 13, and the impeller 30 can rotate together with the rotor 20;

the rotating rotor assembly 22 is disposed corresponding to the rotating stator assembly 12 and constitutes a rotating assembly, and the floating rotor assembly 23 is disposed corresponding to the floating stator assembly 13 and constitutes a floating assembly.

With particular reference to fig. 1, in the present embodiment, the magnetic levitation rotation device comprises: a stator 10 and a rotor 20. The stator 10 includes a stator body 11, a rotating stator assembly 12 and a floating stator assembly 13 arranged at intervals along a circumference of the stator body 11. The rotating stator assembly 12 coincides with the central axis of the floating stator assembly 13. The rotor 20 is arranged around the stator 10 or the stator 10 is arranged around the rotor 20. The rotor 20 includes a rotor body 21, a rotating rotor assembly 22 and a levitating rotor assembly 23 spaced along the circumference of the rotor body 21. The rotating rotor assembly 22 coincides with the central axis of the levitating rotor assembly 23. The rotating rotor assembly 22 or the floating rotor assembly 23 is provided with an impeller 30 extending away from the center of the rotor 20. The impeller 30 is axially spaced a predetermined distance from an end surface of the rotating stator assembly 12 or the floating stator assembly 13. The impeller 30 is rotatable with and displaceable in an axial direction by the rotating rotor assembly 22. The rotating rotor assembly 22 is disposed in correspondence with the rotating stator assembly 12 and constitutes a rotating assembly. The suspension rotor assembly 23 and the suspension stator assembly 13 are correspondingly arranged and form a suspension assembly. The position of the rotor 20 in the device can be simply, flexibly and accurately adjusted in the axial direction of the stator 10 according to actual needs, so that the controllability of the magnetic suspension rotating device is improved; and the impeller 30 is arranged on the end face of the rotating rotor assembly 22, and no additional connecting piece is needed for supporting, so that the structure is simplified to a certain extent, the volume of the rotating device is reduced, and the use space is saved.

It should be noted that, for the sake of convenience of illustration, the rotor 20 is shown in all the drawings as being disposed inside the stator 10; however, unless stated to the contrary, the description of the embodiments of the present disclosure also applies to the case where the rotor 20 is disposed outside the stator 10.

Specifically, in this embodiment, the rotating stator assembly 12 includes a rotating magnetic stator substrate 120 and a plurality of rotating coils 121. A plurality of the rotating coils 121 are arranged at intervals on the circumferential side of the rotating magnetic stator substrate 120 adjacent to the rotor 20. Energizing the plurality of rotating coils 121 generates a rotating magnetic field, and the rotating stator assembly 12 interacts with the rotor 20 to rotate the rotor 20 about the axial direction.

In a preferred embodiment, the plurality of rotating coils 121 are concentrated windings or distributed windings. Concentrated winding is to wind a coil on each tooth, and the winding can be completed by a machine, but the cogging is large. The coil inserting of the distributed winding is complex, manual winding is needed, standardization and mass production are not easy, but the cogging of the distributed winding is lower than that of the centralized winding, so that vibration is small. Without paying attention to cost, it is the most preferred embodiment that the plurality of rotating coils 121 are designed as distributed windings.

Specifically, in this embodiment, the levitating stator assembly 13 includes at least one levitating magnetic stator substrate 130 and a plurality of levitating coils 131. A plurality of the levitation coils 131 are spaced apart from one of the levitating magnetic stator substrates 130 adjacent to the circumferential side of the rotor 20. Energizing the plurality of levitation coils 131 generates a levitation magnetic field, and the levitation stator assembly 13 interacts with the rotor 20 to levitate the rotor 20.

In an alternative embodiment, the levitated magnetic stator substrate 130 is a single stator substrate. One of the levitating magnetic rotor 20 substrates corresponds to a single magnetic stator substrate to form a levitating assembly such that the levitating flange 230 can levitate. In this embodiment, the working principle of the magnetic suspension apparatus may refer to the working principle that one first flange corresponds to one first magnetic stator substrate, and one second flange corresponds to one second magnetic stator substrate stacked together in a staggered manner, which is not described herein again.

In another alternative embodiment, the levitated magnetic stator substrate 130 is two superimposed stator substrates that are staggered. One of the levitating magnetic stator substrates 130 corresponds to one of the stator substrates stacked together in a misaligned arrangement to form a levitating assembly such that the levitating flange 230 can levitate.

It should be noted that the magnetic stator substrate is formed by laminating a plurality of silicon steel sheets. The magnetic stator substrate is made of magnetic conductive metal, such as silicon steel sheet. The number of the magnetic stator substrates can also be two or three or even more independent from each other. Those skilled in the art will determine the number of the magnetic stator substrates according to the actual requirement and the number of the levitation flanges 230 to achieve the best levitation performance of the rotor 20.

Specifically, in embodiment 1, the rotating rotor assembly 22 includes a layer of rotating flanges 220. The rotating flange 220 is provided on an end surface of the rotor body 21. The rotating flange 220 corresponds to the rotating stator assembly 12. The levitating rotor assembly 23 includes a layer of levitating flanges 230. The floating flange 230 is provided at the other end surface of the rotor body 21. The floating flange 230 corresponds to the floating stator assembly 13. With particular reference to fig. 2 and 4, the impeller 30 is provided on the rotating flange 220. With particular reference to fig. 3 and 5, or the suspension flange 230 is provided with the impeller 30. The floating stator assembly 13 can rotate the floating flange 230 to float, and the rotating stator assembly 12 can rotate the rotating flange 220 to rotate, so as to drive the impeller 30 to rotate synchronously.

With particular reference to fig. 6, in embodiment 2, the rotating rotor assembly 22 includes a layer of rotating flanges 220. The rotation flange 220 is provided on an end surface of the rotor main body 21. The rotating flange 220 corresponds with the rotating stator assembly 12. The levitating rotor assembly 23 includes a plurality of layers of levitating flanges 230. The floating flange 230 is spaced apart from the rotor body 21 on a side thereof away from the rotating flange 220. The floating flange 230 corresponds to the floating stator assembly 13. The impeller 30 is provided on the rotating flange 220 or the floating flange 230 located on the end surface of the rotor main body 21. The floating stator assembly 13 can rotate the floating flange 230 to float, and the rotating stator assembly 12 can rotate the rotating flange 220 to rotate, so as to drive the impeller 30 to rotate synchronously.

With particular reference to fig. 7 and 8, in embodiment 3, the rotating rotor assembly 22 includes two layers of rotating flanges 220. The two layers of the rotating flanges 220 are respectively disposed on the upper and lower end surfaces of the rotor body 21. Each of the rotating flanges 220 corresponds to a respective one of the rotating stator assemblies 12. The levitating rotor assembly 23 includes a layer of levitating flanges 230. The floating flange 230 is disposed on the rotor body 21 between the two rotating flanges 220. The impeller 30 is arranged on any layer of the rotating flange 220. The rotating flange 220 can drive the impeller 30 to rotate together.

In embodiment 4, the rotating rotor assembly 22 includes two layers of rotating flanges 220. The levitating rotor assembly 23 includes a plurality of layers of levitating flanges 230. The two layers of the rotating flanges 220 are respectively provided on the opposite end surfaces of the rotor body 21. The plurality of layers of floating flanges 230 are spaced apart from each other on the rotor body 21 and between two layers of the rotating flanges 220. The impeller 30 is arranged on any layer of the rotating flange 220. The rotating flange 220 can drive the impeller 30 to rotate together. The drawings corresponding to this embodiment are substantially similar to fig. 7 and 8, and are not detailed herein.

Preferably, the distance between the adjacent rotating flanges 220 and the adjacent floating flanges 230 in the axial direction is equal to the distance between the adjacent floating flanges 230 in the axial direction. Of course, one skilled in the art can determine whether the axial distance from the floating flange 230 to the rotating flange 220 on both sides and the axial distance between the adjacent floating flanges 230 are equal according to actual needs.

It should be noted that the number of the floating flanges 230 is the same as the number of the magnetic stator substrates. When the number of the magnetic stator substrates is one, the number of the floating flanges 230 is one. When the number of the magnetic stator substrates is two, the number of the floating flanges 230 is two. When the number of the magnetic stator substrates is two stator substrates which are overlapped in a staggered manner, the number of the floating flange 230 is one. When the number of the magnetic stator substrates is multiple, and so on, redundant description is omitted here.

Further, in the above four embodiments, the outer edges of the rotating flange 220 are all toothed, so that the rotating rotor assembly 22 has good rotating performance. The outer edges of the floating flanges 230 are all full circles.

Further, the maximum outer diameter of the rotation flange 220 is equal to the maximum outer diameter of the floating flange 230. That is, the edge of the rotating flange 220 coincides with the edge of the floating flange 230, so that the rotor 20 is more attractive and better performing at a controlled cost. Preferably, the maximum outer diameter of the impeller 30 is larger than the maximum outer diameter of the stator 10, and only when the maximum outer diameter of the impeller 30 is larger than the maximum outer diameter of the stator 10, the action range of the rotating force of the impeller 30 is larger, so as to stir the fluid on the outer circumference side of the rotor 20, not only acting on the fluid above the rotor 20, thereby making the stirring more uniform and the stirring efficiency higher.

Specifically, in this embodiment, the rotating flange 220 or the floating flange 230 and the impeller 30 are integrally formed by machining, casting or 3D printing. Further, the rotating flange 220 or the suspension flange 230 and the impeller 30 are integrally formed by machining or injection molding, so that the concentricity of the rotating flange 220 or the suspension flange 230 and the impeller 30 can be ensured, the forming precision of the rotating flange 220 or the suspension flange 230 and the impeller 30 is high, the integral forming processing process is simple, and the processing cost is low. However, the embodiment of the present disclosure is not limited to the above-mentioned manner of integral molding.

In an alternative embodiment, the rotating flange 220 or the floating flange 230 and the impeller 30 are formed by welding or fastening. Further, the rotating flange 220 or the floating flange 230 and the impeller 30 are separately processed, and the bottom end surface of the impeller 30 is fixed to the top end surface of the rotating flange 220 or the floating flange 230, so that the two are integrated. However, the splicing and forming method of the embodiment of the present disclosure is not limited to this. This processing method is difficult to process compared with the integral forming, and it is necessary to ensure the concentricity of the rotating flange 220 or the floating flange 230 and the impeller 30 during the splicing. Therefore, machining or injection molding is a preferred solution for producing the rotating flange 220 or the floating flange 230 and the impeller 30.

Specifically, in this embodiment, the rotor body, the rotating rotor assembly, and the floating rotor assembly are integrally formed by machining, casting, or 3D printing, so as to ensure the coaxiality of the rotor body, the rotating rotor assembly, and the floating rotor assembly, and thus the rotor can stably rotate. The skilled person can determine the processing method according to the actual needs.

Specifically, in the present embodiment, the impeller 30 includes a plurality of blades 31 equally spaced along the circumference of the rotating rotor assembly 22. The maximum outer diameter of the blades 31 is greater than that of the rotating rotor assembly 22 to sufficiently stir the fluid, thereby improving the stirring efficiency. The present embodiment is provided with four or six blades 31, see fig. 9 and 10, whereby this number has exemplary features. The number of said blades 31 can be determined by the skilled person according to the actual need. All the blades 31 are arranged on the support base and are arranged at equal intervals in the circumferential direction of the rotating rotor assembly 22. Each of said blades 31 extends radially outwards and is connected to the support base in a torque-resistant manner. And is therefore also connected to the rotating rotor assembly 22 in a torque-resistant manner. The blade 31 may be a separate component and then secured to the support base. Of course, the blades 31 may also be an integral part of the support base, i.e. the support base is designed integrally with all the blades 31. The rotor 20 with blades 31 acts to agitate the fluid or liquid.

Specifically, in this embodiment, the impeller 30 is made of plastic or stainless steel. The inventor verifies through many times of experiments that the impeller 30 made of plastic has the highest cost performance and the best working performance. The material of the impeller 30 can be selected by those skilled in the art according to actual needs to optimize the working performance of the impeller 30.

Specifically, in the present embodiment, the rotor 20 is made of a magnetic conductive metal. The material of the magnetic conductive metal includes but is not limited to alloy steel, silicon steel sheet, stainless steel, and electrical pure iron. Preferably, the rotor 20 is made of stainless steel, which is light in weight and low in cost, and is the best choice for other materials.

In an alternative embodiment, the rotor is made of a permanent magnet. Permanent magnets can demagnetize at too high a temperature. The magnetic suspension rotary device that can in this application is owing to be arranged in the magnetic suspension pump and the magnetic suspension mixer of semiconductor field, and operating temperature can not too high, consequently can not make the permanent magnet demagnetization. And the rotor made of the permanent magnet has large torque and large force, so that the working performance of the magnetic suspension pump and the magnetic suspension stirrer is more excellent.

With particular reference to fig. 11 and 12, in the present embodiment, the magnetically levitated rotary device further comprises a film 40 disposed between the rotor 20 and the stator 10. The membrane 40 is "U" shaped, i.e. the bottom of the membrane 40 is flat. The membrane 40 with such a shape is convenient to install, and the rotor 20 does not have convex interference during stirring, and the stirring performance is better. The rotor 20 is located within the membrane 40 and is disposed on the inner wall of the bottom of the membrane 40. In the field with higher requirement on cleanliness, when the magnetic suspension rotating device is used for working, only the rotor 20 on the film 40 needs to be cleaned and replaced, and the stator 10 does not need to be cleaned and replaced, so that the use cost is reduced, and the later maintenance is more convenient. Further, the whole magnetic suspension rotating device is a reusable device, namely, is used for multiple times. The shape of the membrane 40 can be chosen by the skilled person according to the actual needs to optimize the performance of the magnetic levitation rotation device.

Referring specifically to fig. 14, in the present embodiment, the axial distance from the center of the rotor body 21 to the bottom of the impeller 30 extending in the radial direction is H1. The axial distance from the center of the rotor body 21 to the end face of the stator 10 adjacent to the impeller 30 is H2. Wherein H1 is more than H2, so that at most part of the blades 31 can stir the fluid, and further stirring efficiency is improved.

Referring specifically to fig. 13, in the present embodiment, the maximum outer diameter of the impeller 30 is R1. The maximum outer diameter of the membrane 40 is R2, wherein R1 < R2. Only when the maximum outer diameter of the membrane 40 is larger than the maximum outer diameter of the impeller 30, the membrane 40 can better protect the stator 10 from contamination, avoid cleaning and replacing the stator 10, and ensure low cost when the impeller 30 is conveying or stirring fluid.

Specifically, in the present embodiment, the outer edges of the rotor 20 and the impeller 30 are coated with an anticorrosive coating. The material of the anti-corrosion coating can be: PVDF, PFA, PP, parylene, DLC. The coating method of the anti-corrosion coating can be injection molding, welding or vapor deposition. Further, the material of the anti-corrosive coating may be used in one or more of a stacked manner, for example, the outer edges of the rotor 20 and the impeller 30 may be coated with a PVDF layer, then with parylene, and finally with a diamond-like film DLC by vapor deposition to form a final anti-corrosive coating. The material and the coating method of the anti-corrosion coating can be selected by those skilled in the art according to actual needs, and are not described in detail herein.

The application also discloses a magnetic suspension pump, which comprises the magnetic suspension rotating device, wherein the rotor 20 and the impeller 30 arranged on the rotor 20 of the magnetic suspension rotating device are designed into the rotor 20 and the impeller 30 of the magnetic suspension pump. The rotor 20 with the impeller 30 in the magnetic suspension pump can play a role of pushing water, so that vacuum is generated in the middle of the impeller 30, water flows into the vacuum, and then the water is discharged through the impeller 30 rotating at a high speed, so that the speed of water flow is improved.

The application also discloses a magnetic suspension stirrer, which comprises the magnetic suspension rotating device, wherein the rotor 20 of the magnetic suspension rotating device and the impeller 30 arranged on the rotor 20 are designed into the rotor 20 and the impeller 30 of the magnetic suspension stirrer so as to stir fluid or powder.

It should be noted that the magnetic suspension stirrer can be used in particular in the pharmaceutical industry and in the biotechnology industry. Magnetic suspension stirrers are particularly suitable for applications in which it is necessary that the components in contact with the substances to be mixed have a very high purity or are sterile. The magnetic suspension stirrer can also be designed as a bioreactor or a fermenter. It should be understood, however, that the magnetically levitated agitator is not limited to such a design, but may generally be designed as an agitator that may mix or agitate a medium or substance. In particular, these substances may be fluids or solids, preferably powders. The magnetic suspension stirrer is suitable for mixing fluids with each other and/or at least one fluid with a powder or other solid and/or mixing a gas with a fluid and/or a solid.

Further, the rotor 20 and the impeller 30 are preferably designed as an integrated rotor impeller 30 structure in the present application, because it is both the rotor impeller 30 of the magnetic levitation rotation device and the rotor impeller 30 of the magnetic levitation pump and the rotor impeller 30 of the magnetic levitation stirrer, and the fluid can be transported, mixed or stirred by the rotor impeller 30. In summary, the rotor wheel 30 structure thus performs four functions: it is the rotor impeller 30 of the magnetic levitation rotation device, it is the rotor impeller 30 of the magnetic levitation pump, it is the rotor impeller 30 of the magnetic levitation agitator, and it is the rotor impeller 30 acting on the fluid. This design as a unitary rotor wheel 30 construction provides the advantage of a very compact and space-saving design.

The principle and implementation of the present invention are explained by applying specific embodiments in the present application, and the above description of the embodiments is only used to help understand the technical solution and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A magnetically levitated rotary device, comprising:

2. The magnetically levitated rotary device of claim 1, wherein said rotating stator assembly includes at least one rotating magnetic stator substrate and a plurality of rotating coils spaced on a circumferential side of one of said rotating magnetic stator substrates adjacent to said rotor.

3. The magnetic levitation rotating apparatus as claimed in claim 2, wherein the plurality of rotating coils are concentrated windings or distributed windings.

4. The magnetically levitated rotary apparatus according to claim 2, wherein said levitated stator assembly includes at least one levitated magnetic stator substrate and a plurality of levitated coils spaced apart from one of said levitated magnetic stator substrate adjacent a circumferential side of said rotor.

5. The magnetically suspended rotary device of claim 4, wherein the levitated magnetic stator substrate is a single stator substrate or two superimposed stator substrates in a staggered manner.

6. The magnetic levitation rotating apparatus according to claim 4, wherein the rotating rotor assembly comprises a layer of rotating flanges, the levitation rotor assembly comprises a layer of levitation flanges, the rotating flanges and the levitation flanges are respectively disposed on two opposite end surfaces of the rotor body, and the impeller is disposed on the rotating flanges or the levitation flanges.

7. The magnetic levitation rotating device as recited in claim 6, wherein the outer edge of the rotating flange is toothed, and the outer edge of the levitation flange is full circle.

8. The magnetically suspended rotating device according to claim 7, wherein the maximum outer diameter of the rotating flange is equal to the maximum outer diameter of the suspending flange.

9. The magnetic levitation rotating device according to claim 8, wherein the rotating flange or the levitation flange is integrally formed with the impeller by means of machining or casting or 3D printing.

10. The magnetic levitation rotating device as recited in claim 8, wherein the rotating flange or the levitation flange and the impeller are formed by splicing through welding or fastening.

11. The magnetically suspended rotating device according to claim 6, wherein the rotor body, the rotating rotor assembly and the suspended rotor assembly are integrally formed by machining or casting or 3D printing.

12. The magnetically levitated rotary device of claim 6, wherein the impeller includes a plurality of blades equally spaced along a circumference of the rotating or levitated rotor assembly.

13. The magnetic levitation rotating apparatus as claimed in claim 12, wherein the impeller is made of plastic or stainless steel.

14. The magnetic levitation rotating device according to claim 4, wherein the rotating rotor assembly comprises a layer of rotating flange, the levitating rotor assembly comprises a plurality of layers of levitating flanges, the rotating flange is disposed on one end face of the rotor body, the plurality of layers of levitating flanges are sequentially disposed on one side of the rotor body away from the rotating flange, and the impeller is disposed on the rotating flange or the levitating flange on the end face of the rotor body.

15. The magnetic levitation rotating apparatus according to claim 4, wherein the rotating rotor assembly comprises two layers of rotating flanges, the suspending rotor assembly comprises one layer of suspending flanges, the two layers of rotating flanges are respectively disposed on two opposite end surfaces of the rotor body, the suspending flanges are disposed on the rotor body and located between the two layers of rotating flanges, and the impeller is disposed on any one layer of rotating flange.

16. The magnetic levitation rotating device as claimed in claim 4, wherein the rotating rotor assembly comprises two layers of rotating flanges, the levitating rotor assembly comprises a plurality of layers of levitating flanges, the two layers of rotating flanges are respectively disposed on two opposite end faces of the rotor body, the plurality of layers of levitating flanges are disposed on the rotor body at intervals and located between the two layers of rotating flanges, and the impeller is disposed on any one layer of the rotating flanges.

17. The magnetic levitation rotating device as recited in claim 4, wherein the rotor is made of a magnetically conductive metal, such as silicon steel sheet, magnetically conductive stainless steel, and electrical pure iron.

18. The magnetically suspended rotary device of claim 4, wherein the rotor is made of permanent magnets.

19. The magnetically suspended rotary device of claim 1, further comprising a membrane disposed between the rotor and the stator, the rotor being located within the membrane and disposed on an inner wall of a bottom of the membrane.

20. The magnetically suspended rotating device according to any of claims 1 to 19, wherein the axial distance from the center of the rotor body to the bottom of the impeller extending in the radial direction is H1, and the axial distance from the center of the rotor body to the end face of the stator adjacent to the impeller is H2, wherein H1 > H2.

21. The magnetically suspended rotating device according to claim 20, wherein the impeller has a maximum outer diameter R1 and the membrane disposed between the rotor and the stator has a maximum outer diameter R2, wherein R1 < R2.

22. The magnetic levitation rotating device as claimed in claim 21, wherein the outer rims of the rotor and the impeller are coated with an anti-corrosion coating by injection molding, welding or vapor deposition, and the anti-corrosion coating is made of: PVDF, PFA, PP, parylene, DLC.

23. A magnetic levitation pump comprising a magnetically levitated rotary device designed according to any one of claims 1 to 22.

24. A magnetically levitated agitator comprising a magnetically levitated rotating apparatus designed in accordance with any one of claims 1 to 22.