CN114618692A - Magnetic suspension centrifuge - Google Patents
Magnetic suspension centrifuge Download PDFInfo
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- CN114618692A CN114618692A CN202210239647.4A CN202210239647A CN114618692A CN 114618692 A CN114618692 A CN 114618692A CN 202210239647 A CN202210239647 A CN 202210239647A CN 114618692 A CN114618692 A CN 114618692A
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- 239000000725 suspension Substances 0.000 title claims abstract description 24
- 238000012806 monitoring device Methods 0.000 claims abstract description 24
- 230000000712 assembly Effects 0.000 claims description 18
- 238000000429 assembly Methods 0.000 claims description 18
- 238000005339 levitation Methods 0.000 claims description 10
- 230000001846 repelling effect Effects 0.000 claims description 9
- 230000036544 posture Effects 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000006870 function Effects 0.000 abstract description 8
- 230000008447 perception Effects 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/02—Electric motor drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
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- Centrifugal Separators (AREA)
Abstract
The invention discloses a magnetic suspension centrifuge, which abandons the scheme of adding a transmission shaft to a motor, and utilizes the magnetic force (magnetic attraction, magnetic repulsion and rotating magnetic field) between a base and a rotating part to enable the rotating part to suspend and rotate and carry out dynamic attitude control on the rotating part. The high-speed rotatory rotation piece has the characteristic of rotating around self axis, have the self-correction function, in case dynamic balance has slight unbalance or because a tiny disturbance, because there is not the physics of transmission shaft spacing, the rotation piece possesses the function of self-correcting, still be in a steady high-speed rotation, simultaneously through the gesture and the position of monitoring devices perception rotation piece, and then control the electric current size and the electric current direction of the electromagnetic part of different positions in order to produce suitable magnetic force, come the gesture and the position of dynamic control rotation piece, make the rotation piece be in under the steady high-speed rotation state all the time. The invention solves the problems that the connecting components of the traditional centrifugal machine are easy to wear and are not easy to realize high-speed operation.
Description
Technical Field
The invention relates to the technical field of centrifuges, in particular to a magnetic suspension centrifuge.
Background
A centrifuge is a device that uses centrifugal force to separate components of a liquid from solid particles or a mixture of liquid and liquid. Referring to fig. 1, a conventional centrifuge drives a main shaft b to rotate by a motor a, and the main shaft drives a rotor c to rotate. The traditional centrifuge drives the rotor to rotate through the rotation of the main shaft, the connecting component of the centrifuge is seriously abraded, especially the abrasion of the connecting component caused by the rotation of the rotor when the rotor is not matched is more serious, and the rotating speed of the centrifuge is not easy to realize high-speed operation.
Disclosure of Invention
In order to overcome the defects in the prior art, a magnetic suspension centrifuge is provided so as to solve the problems that a connecting member of a traditional centrifuge is easy to wear and is not easy to realize high-speed operation.
To achieve the above object, there is provided a magnetic levitation centrifuge comprising:
a base;
the rotating piece is used for installing a material to be centrifuged and is arranged opposite to the base, and a gap is formed between the rotating piece and the base;
the magnetic assembly comprises a plurality of magnetic attraction assemblies and a plurality of magnetic repulsion assemblies which are alternately arranged, the magnetic attraction assemblies and the magnetic repulsion assemblies are arranged, each magnetic attraction assembly comprises a first magnetic attraction piece and a second magnetic attraction piece which are oppositely arranged, the first magnetic attraction piece is magnetically attracted to the second magnetic attraction piece, each magnetic repulsion assembly comprises a first magnetic repulsion piece and a second magnetic repulsion piece which are oppositely arranged, the first magnetic repulsion pieces are magnetically repelled to the second magnetic repulsion pieces, the first magnetic attraction pieces and the first magnetic repulsion pieces are respectively arranged on the opposite sides of the base, the second magnetic attraction pieces and the second magnetic repulsion pieces are respectively arranged on the opposite sides of the rotating piece, and part of the first magnetic attraction pieces and/or the second magnetic attraction pieces of the magnetic attraction assemblies and part of the first magnetic repulsion pieces and/or the second magnetic repulsion pieces of the magnetic repulsion assemblies are electromagnetic pieces;
the monitoring device is used for monitoring the real-time posture of the rotating piece and is arranged on the rotating piece or the base; and
the controller is installed on the base, is in signal connection with the monitoring device and the electromagnetic pieces, and the controller controls the current magnitude and the current direction of the electromagnetic pieces respectively based on the real-time postures so as to enable the magnetic sleeve piece to generate a rotating magnetic field to drive the rotating piece to rotate.
Furthermore, the first magnetic attraction piece and/or the second magnetic attraction piece of the magnetic attraction component on the other part and the first magnetic repulsion piece and/or the second magnetic repulsion piece of the magnetic repulsion component on the other part are permanent magnets.
Furthermore, the device also comprises a case, wherein the base is connected with a bearing platform, the bearing platform is fixedly arranged in the case, and the controller is arranged on the bearing platform.
Furthermore, a non-magnetic-conductive partition plate arranged between the rotating piece and the base is installed in the case.
Furthermore, a limiting hole is formed in the central axis of the rotating part, a limiting rod is installed on the base, the limiting rod is inserted into the limiting hole, and the outer wall of the limiting rod and the inner wall of the limiting hole are arranged in a clearance mode.
Furthermore, the outer fringe of base is formed with edge of a wing crown plate, rotate a movably set up in the edge of a wing crown plate, edge of a wing crown plate with the lateral part of rotating the piece sets up relatively, and the part magnetism inhale subassembly, part magnetism repel the subassembly install respectively in edge of a wing crown plate with the lateral part of rotating the piece.
Furthermore, the plurality of magnetic attraction components and the plurality of magnetic repulsion components are annularly arranged by taking the plane center of the base as a circle center.
Furthermore, a plurality of magnetism subassembly and a plurality of magnetism is repelled the subassembly and is used the plane center of base is the matrix and arranges as the center.
Further, all the electromagnets of the magnetic kit are mounted to the base.
Further, the monitoring device comprises a plurality of position sensors, and the position sensors are arranged on the base.
The magnetic suspension centrifugal machine has the advantages that the magnetic suspension centrifugal machine abandons a scheme of adding a transmission shaft (main shaft) to a motor, thoroughly solves the serious problems caused by the structural problems of the existing centrifugal machine, and has simpler structure, more reliable and safe work and longer service life. The rotating part is suspended and rotated by using the magnetic force (vertical magnetic attraction force, magnetic repulsion force and rotating magnetic field) between the base and the rotating part, and the dynamic attitude of the rotating part is controlled. And, the rotating part of high-speed rotation has the characteristic of rotating around self axis, also have certain self-correction function, once dynamic balance has slight unbalance or because of a tiny disturbance, because there is not the physics of transmission shaft spacing, the rotating part possesses the function of self-correcting, still be in a steady high-speed rotation, more importantly simultaneously through monitoring devices (displacement sensor) perception rotating part's gesture and position, and then control the electric current size and the electric current direction of the electromagnetic part of different positions in order to produce suitable magnetic force, come dynamic control rotating part's gesture and position, make the rotating part be in under the steady high-speed rotation state all the time.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a centrifuge of the prior art.
Fig. 2 is a schematic structural diagram of a magnetic suspension centrifuge according to a first embodiment of the present invention.
Fig. 3 is a schematic structural view of a flange ring plate according to a first embodiment of the present invention.
Fig. 4 is a schematic structural view of a limiting rod according to a first embodiment of the present invention.
Fig. 5 is a plan view of the rotation member mounted with the stopper rod according to the first embodiment of the present invention.
Fig. 6 is a schematic structural view of an outer flange of a rotor according to a first embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a magnetic suspension centrifuge according to a second embodiment of the present invention.
Fig. 8 is a schematic structural view of a flange ring plate according to a second embodiment of the present invention.
Fig. 9 is a schematic view showing the structure of the outer flange of the rotating member according to the second embodiment of the present invention.
Fig. 10 is a first layout diagram of the magnetic kit of the magnetic levitation centrifuge according to the present invention.
Fig. 11 shows a second arrangement of the magnetic assemblies of the magnetic levitation centrifuge according to the invention.
Fig. 12 shows a third arrangement of the magnetic assemblies of the magnetic levitation centrifuge according to the invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
First embodiment
Referring to fig. 1 to 6, and 10 to 12, the present invention provides a magnetic levitation centrifuge including: base 1, rotation piece 2, magnetism external member 3, monitoring devices 4 and controller.
Wherein the rotating member 2 is a rotor or a drum. The rotor 2 is used for mounting the material A to be centrifuged. The rotating member 2 is disposed opposite to the base 1. In the present embodiment, the rotating member 2 is disposed at a gap from the base 1.
The magnetic kit 3 includes a plurality of magnetically attracted components and a plurality of magnetically repelled components.
The magnetic component comprises a first magnetic part and a second magnetic part 311 which are arranged oppositely. The first magnetic attraction piece is magnetically attracted to the second magnetic attraction piece 311.
The magnetic repulsion assembly includes a first magnetic repulsion member 321 and a second magnetic repulsion member disposed opposite to each other. The first magnetically repulsive member 321 magnetically repels the second magnetically repulsive member.
The first magnetic attraction member and the first magnetic repulsion member 321 are respectively installed at opposite sides of the base 1.
The second magnetic attracting member 311 and the second magnetic repelling member are respectively installed at opposite sides of the rotating member 2.
The first magnetic attraction piece 311 and/or the second magnetic attraction piece 311 of a part of the magnetic attraction components and the first magnetic repulsion piece 321 and/or the second magnetic repulsion piece 321 of a part of the magnetic repulsion components are electromagnetic pieces. In this embodiment, the first magnetic attracting element 311 and/or the second magnetic attracting element 311 of one part of the magnetic assemblies are electromagnetic elements, and the first magnetic repelling element 321 and/or the second magnetic repelling element of one part of the magnetic repelling assemblies are electromagnetic elements. The electromagnetic member is wound by a coil. In some embodiments, the coil center is provided with a magnetic core.
When the first magnetic attraction piece and/or the second magnetic attraction piece 311 of the magnetic attraction component is an electromagnetic piece, the current magnitude and the current direction of the electromagnetic piece of the magnetic attraction component are/is changed, so that the magnetic attraction component can magnetically attract the rotor to pull the rotor. On the other hand, when the first magnetic repulsion element 321 and/or the second magnetic repulsion element of the magnetic repulsion assembly is an electromagnetic element, the rotor can be continuously suspended and suspended relative to the base by changing the current magnitude and the current direction of the electromagnetic element of the magnetic repulsion assembly so as to abut against the rotor, and the rotor is not in contact with the base.
In this embodiment, the plurality of magnetic attraction components and the plurality of magnetic repulsion components are alternately arranged, and the plurality of magnetic attraction components and the plurality of magnetic repulsion components are arranged along the circumferential direction (circumferential direction) of the base. In some embodiments, as in fig. 7-8, the cylindrical or truncated cone shape of the base and rotor. The subassembly is inhaled to magnetism and the subassembly is repelled to magnetism sets up along the circumferencial direction of base.
The monitoring device 4 is mounted to the rotating member 2 or the base 1. In this embodiment, the monitoring device is mounted on the base. The monitoring device 4 is used for monitoring the real-time posture of the rotating member 2.
The controller is mounted on the base 1. The controller is signally connected to the monitoring device 4 and the plurality of electromagnetic members. After the monitoring device monitors the rotating member and forms real-time attitude data of the rotating member, the controller acquires the real-time attitude data of the rotating member. Based on the data of real-time gesture, the controller controls the electric current size and the electric current direction of the electromagnetic part of a plurality of magnetism subassembly of inhaling and magnetism subassembly respectively in order to make magnetism external member 3 produce rotating magnetic field, and then rotates piece 2 through the drive of rotating magnetic field and rotate (the rotation of rotating piece around self axis).
The magnetic suspension centrifuge of the invention enables the magnetic sleeve between the base and the rotating piece to generate a rotating magnetic field by controlling the current magnitude and the current direction of the electromagnetic piece at different positions on the base, and can drive the rotating piece to rotate in a controlled manner or in an uncontrolled manner by combining or not combining with real-time attitude data, and the rotating mode can be synchronous rotation or asynchronous rotation. When the rotating magnetic field rotates at a high speed, the rotating part enters a high-speed rotating state; when the rotating magnetic field rotates at a low speed, the rotor enters a low-speed rotation state.
Furthermore, the real-time attitude data of the rotating part is collected through the monitoring device so as to sense the attitude and the position of the rotating part, and then the controller can correspondingly control the current size and the direction of the electromagnetic parts at different positions on the base so as to generate proper magnetic force to dynamically control the attitude and the position of the rotating part.
In some embodiments, the monitoring device includes a plurality of position sensors, the position sensors being hall sensors. Hall sensor can install in under rotating the piece, when detecting to rotate the left side skew of piece towards the base, the left electromagnetic component of base produces great thrust, and the electromagnetic component on the right side of base produces the pulling force, pushes back the piece of rotating towards the right side of base and rectifies a deviation, vice versa, makes the piece of rotating be in under the steady high-speed rotation state all the time.
As a preferred embodiment, for economical and cost reasons, the first magnetic attracting element 311 and/or the second magnetic attracting element 311 of the other magnetic attracting assembly and the first magnetic repelling element 321 and/or the second magnetic repelling element of the other magnetic repelling assembly are/is permanent magnets. The magnetic poles of the magnetic attraction component and the magnetic repulsion component of the part are fixed.
In this embodiment, the magnetic levitation centrifuge of the present invention further includes a chassis 12. The base 1 is connected with a bearing platform 11. The bearing platform 11 is fixedly arranged in the case 12. The controller is mounted to the platform 11.
In this embodiment, the rotating member and the base are disposed in a forward direction, i.e., the rotating member is disposed directly above the base. In some embodiments, the rotating member is disposed directly below the base.
In a preferred embodiment, a non-magnetically conductive partition is mounted within the housing 12. The non-magnetic-conductive partition plate is arranged between the rotating piece 2 and the base 1. The non-magnetic-conductive partition plate can enable a magnetic field to penetrate through without obstacles, but the non-magnetic-conductive partition plate can prevent sundries or foreign matters from entering the inside of the case, so that the safety of the internal controller is influenced.
Preferably, the non-magnetic-conductive partition plate is an aluminum plate, a copper plate, a ceramic plate or a glass plate.
In this embodiment, a limiting hole is formed in the central axis of the rotating member 2, and the base 1 is provided with a limiting rod 14. The stopper rod 14 is inserted into the stopper hole. The outer wall of the limiting rod 14 and the inner wall of the limiting hole are arranged in a clearance mode. The limiting rod is not a main shaft of a traditional centrifuge, the limiting rod in the embodiment is not in contact with a rotating part at all, and the limiting function is performed under the abnormal state of the rotating part only based on the safety performance.
In a preferred embodiment, the flange ring plate 151 is formed on the outer edge of the base 1. The rotating member 2 is movably disposed in the flange ring plate 151. The flange ring plate 151 is disposed opposite to the side of the rotation member 2. Part of the magnetic attraction components and part of the magnetic repulsion components are respectively arranged on the flange ring plate 151 and the side part of the rotating part 2.
In this embodiment, the flange ring plate is disposed obliquely, and the size (inner diameter) of the flange ring plate gradually increases from the lower end of the flange ring plate to the upper end of the flange ring plate.
In some embodiments, as shown in fig. 9, the side of the rotation member is formed with a flange 21 which is arranged in one turn in the circumferential direction of the rotation member, and correspondingly, the inner wall of the casing 12 is formed with a ridge 121 which is arranged in one turn in the circumferential direction of the casing. The inner cavity of the case is cylindrical. The flange is arranged below the flange. And a magnetic sleeve is arranged on the opposite surface of the flange and the convex edge. And a magnetic sleeve is arranged on the inner wall of the flange and the inner wall of the case above the flange.
The base and the rotating part of the magnetic suspension centrifuge of the invention have no physical tie, but besides the self gravity (downward pressure) of the rotating part, not only exist magnetic repulsion and magnetic attraction in the vertical direction between the rotating part and the base (the magnetic repulsion and magnetic attraction generated by the magnetic sleeve at the opposite side of the base and the rotating part), but also exist magnetic repulsion and magnetic attraction in the horizontal direction (the magnetic repulsion and magnetic attraction generated by the flange annular plate and the magnetic sleeve at the side of the rotating part), and by controlling the current of the electromagnetic part at different positions, force in any direction can be generated between the base and the rotating part. The attitude and the position of the rotating part are sensed by a displacement sensor of the monitoring device, and then the current magnitude and the current direction of the electromagnetic part at different positions are controlled to generate proper magnetic force, so that the attitude and the position of the rotating part are dynamically controlled.
Referring to fig. 11 and 12, the plurality of magnetic attraction members and the plurality of magnetic repulsion members are annularly arranged around the center of the plane of the base 1. In fig. 11, the plurality of magnetic attraction assemblies and the plurality of magnetic repulsion assemblies are arranged in a double-ring shape with the plane center of the base 1 as the center of circle, while in fig. 12, the plurality of magnetic attraction assemblies and the plurality of magnetic repulsion assemblies are arranged in a single-ring shape with the plane center of the base 1 as the center of circle.
Referring to fig. 10, the plurality of magnetic attraction assemblies and the plurality of magnetic repulsion assemblies are arranged in a matrix shape with the center of the plane of the base 1 as the center.
In the present embodiment, all the electromagnets of the magnetic kit 3 are mounted to the base 1.
As a preferred embodiment, the monitoring device 4 comprises a plurality of position sensors, which are mounted to the base 1. In some embodiments, the monitoring device further comprises a gyroscope, a gravity sensor, a hall sensor, or the like.
The conventional centrifuge shown in fig. 1 needs to ensure strict dynamic balance due to the existence of the main shaft b for transmitting the rotation power, and the operation requires that the centrifugal rotor c (including the material a to be centrifuged) should ensure strict dynamic balance, and once the dynamic balance is slightly unbalanced or because of a slight disturbance, a radial force is generated during rotation, and the radial force is applied to the main shaft b, and the rotor c including the material to be centrifuged can generate violent vibration due to the lack of the dynamic balance, which causes the damage of the centrifuge due to light reasons, and causes injury accidents due to heavy reasons.
The magnetic suspension centrifuge of the invention abandons the scheme of adding a transmission shaft (main shaft) to a motor, thoroughly solves the serious problems caused by the structural problems of the existing centrifuge, and has simpler structure, more reliable and safe work and longer service life. The rotating part is suspended and rotated by utilizing the magnetic force (magnetic attraction and magnetic repulsion in the vertical direction, a rotating magnetic field, and magnetic attraction and magnetic repulsion in the horizontal direction) between the base and the rotating part, and the dynamic attitude of the rotating part is controlled. And, the object of high-speed rotation has the characteristic of rotating around self axis, also have certain self-correction function, once there is slight unbalance or because of a tiny disturbance in the dynamic balance, because there is not the physics of transmission shaft spacing, centrifugal rotor possesses the function of self-correcting, still be in a steady high-speed rotation, more importantly simultaneously through monitoring devices (displacement sensor) perception revolving part's gesture and position, and then control the electric current size and the electric current direction of the electromagnetic component of different positions in order to produce suitable magnetic force, come the gesture and the position of dynamic control revolving part, make the revolving part be in under the steady high-speed rotation state all the time.
Referring to fig. 10 to 11, the N/S magnetic pole in the drawings only represents the operation principle, and does not represent the actual direction and position. The magnetic suspension centrifuge of the invention makes the rotating part suspend without contacting with the base through magnetic force, under the condition that there is no transmission device of the main shaft or the like directly contacting with the rotating part, the rotating part is driven to rotate through the transformation of the magnetic field, the transmission of the main shaft is not needed, the rotating part is directly driven to rotate through controlling the regular change of the magnetic field, the dynamic balance of the rotating part is monitored on line through the monitoring device, and the controller corrects and adjusts the posture of the rotating part through changing the magnetic field based on the real-time posture data of the rotating part collected by the monitoring device, so that the rotating part maintains stable high-speed rotation.
Second embodiment
Referring to fig. 7 to 12, the present embodiment differs from the first embodiment only in that:
the rotating member is disposed under the base, and other structures are the same as those of the magnetic suspension centrifuge of the first embodiment, and therefore are not described herein again.
In some embodiments, as shown in fig. 9, the side of the rotation member is formed with a flange 21 which is arranged in one turn in the circumferential direction of the rotation member, and correspondingly, the inner wall of the casing 12 is formed with a ridge 121 which is arranged in one turn in the circumferential direction of the casing. The inner cavity of the case is cylindrical. The flange is arranged above the flange. And a magnetic sleeve is arranged on the opposite surface of the flange and the convex edge. And a magnetic sleeve is arranged on the inner wall of the flange and the inner wall of the case below the convex edge.
Traditional centrifuges drive a drive shaft via a motor, which drives a rotor to rotate. When the rotor rotates at a high speed, slight shake can be generated, the shake is transmitted to the motor through the transmission shaft, the loss of the motor is increased, and even the motor is damaged. In contrast, the magnetic suspension centrifuge is not provided with a motor, so that the risk is avoided, and the magnetic suspension centrifuge is more reliable in performance and longer in service life.
The magnetic suspension centrifuge of the invention can be widely applied to the biomedical, chemical and petroleum industries, and is a device for separating each component in liquid and solid particles or a mixture of liquid and liquid by utilizing centrifugal force.
When the controller of the magnetic suspension centrifuge detects that the rotating part (the centrifugal rotor) is arranged above the base through the monitoring device, the controller controls the electromagnetic part of the magnetic attraction component and the electromagnetic part of the magnetic repulsion component to generate vertical acting force so as to enable the centrifugal rotor to stably suspend, and the current of the electromagnetic part is adjusted based on the posture of the rotating part detected by the monitoring device so as to enable the rotating part to horizontally suspend. After the rotating part horizontally floats, the controller sequentially energizes the electromagnetic parts of the other part to generate a rotating magnetic field to drive the rotating part to rotate. After the rotating piece rotates, the controller controls the rotating speed and the rotating direction of the rotating piece by adjusting the current magnitude, the current direction and the electrifying frequency of the electromagnetic piece.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A magnetic levitation centrifuge, comprising:
a base;
the rotating piece is used for installing a material to be centrifuged and is arranged opposite to the base, and a gap is formed between the rotating piece and the base;
the magnetic kit comprises a plurality of magnetic attraction components and a plurality of magnetic repulsion components which are alternately arranged, the magnetic attraction components and the magnetic repulsion components, the magnetic attraction components comprise first magnetic attraction pieces and second magnetic attraction pieces which are oppositely arranged, the first magnetic attraction pieces are magnetically attracted to the second magnetic attraction pieces, the magnetic repulsion components comprise first magnetic repulsion pieces and second magnetic repulsion pieces which are oppositely arranged, the first magnetic repulsion pieces are magnetically repelled to the second magnetic repulsion pieces, the first magnetic attraction pieces and the first magnetic repulsion pieces are respectively arranged on the opposite sides of the base, the second magnetic attraction pieces and the second magnetic repulsion pieces are respectively arranged on the opposite sides of the rotating piece, and part of the first magnetic attraction pieces and/or the second magnetic attraction pieces of the magnetic attraction components and part of the first magnetic repulsion pieces and/or the second magnetic repulsion pieces of the magnetic repulsion components are electromagnetic pieces;
the monitoring device is used for monitoring the real-time posture of the rotating piece and is arranged on the rotating piece or the base; and
the controller is installed on the base, is in signal connection with the monitoring device and the electromagnetic pieces, and the controller controls the current magnitude and the current direction of the electromagnetic pieces respectively based on the real-time postures so as to enable the magnetic sleeve piece to generate a rotating magnetic field to drive the rotating piece to rotate.
2. The magnetic suspension centrifuge of claim 1, wherein the first and/or second magnetically attracting members of the magnetically attracting assembly of the other portion and the first and/or second magnetically repelling members of the magnetically repelling assembly of the other portion are permanent magnets.
3. The magnetic suspension centrifuge of claim 1, further comprising a case, wherein the base is connected with a bearing platform, the bearing platform is fixedly arranged in the case, and the controller is arranged on the bearing platform.
4. The magnetic levitation centrifuge of claim 3, wherein a non-magnetic conductive partition is mounted within the housing between the rotating member and the base.
5. The magnetic suspension centrifuge of claim 1, wherein the rotating member has a central axis formed with a limiting hole, the base has a limiting rod inserted into the limiting hole, and an outer wall of the limiting rod is spaced from an inner wall of the limiting hole.
6. The magnetic suspension centrifuge of claim 1, wherein the outer edge of the base is formed with a flange ring plate, the rotating member is movably disposed in the flange ring plate, the flange ring plate is disposed opposite to the side portion of the rotating member, and a part of the magnetic attraction assembly and a part of the magnetic repulsion assembly are respectively mounted on the flange ring plate and the side portion of the rotating member.
7. The magnetic suspension centrifuge of claim 1, wherein the plurality of magnetic attraction components and the plurality of magnetic repulsion components are annularly arranged around the center of the plane of the base.
8. The magnetic suspension centrifuge of claim 1, wherein the plurality of magnetic attraction assemblies and the plurality of magnetic repulsion assemblies are arranged in a matrix pattern centered on the planar center of the base.
9. The magnetic levitation centrifuge of claim 1, wherein all electromagnets of the magnetic assembly are mounted to the base.
10. The magnetic levitation centrifuge of claim 1, wherein the monitoring device comprises a plurality of position sensors mounted to the base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210239647.4A CN114618692A (en) | 2022-03-11 | 2022-03-11 | Magnetic suspension centrifuge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210239647.4A CN114618692A (en) | 2022-03-11 | 2022-03-11 | Magnetic suspension centrifuge |
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| CN114618692A true CN114618692A (en) | 2022-06-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116060218A (en) * | 2023-03-30 | 2023-05-05 | 天津飞旋科技股份有限公司 | Centrifuge and centrifuge control method |
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| CN215567324U (en) * | 2021-04-19 | 2022-01-18 | 青岛海特生物医疗有限公司 | Centrifugal machine |
| CN114042241A (en) * | 2021-11-16 | 2022-02-15 | 深圳核心医疗科技有限公司 | Magnetic suspension pump |
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| CN109225670A (en) * | 2018-09-10 | 2019-01-18 | 山东科技大学 | A kind of hybrid magnetic suspension bearing medical centrifuge and its control method |
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| CN116060218A (en) * | 2023-03-30 | 2023-05-05 | 天津飞旋科技股份有限公司 | Centrifuge and centrifuge control method |
| CN116060218B (en) * | 2023-03-30 | 2023-06-20 | 天津飞旋科技股份有限公司 | Centrifuge and centrifuge control method |
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