JP4304448B2 - Method for installing rotor blades in non-contact stirrer and non-contact stirrer using the method - Google Patents

Description

   The present invention relates to a non-contact stirrer in which a rotating portion that stirs a liquid to be treated in a container that accommodates the liquid to be agitated rotates without contacting the inner wall of the container.

  Patent Document 1 discloses a non-contact stirring device that rotates a rotor blade magnetically levitated in a liquid to be processed using superconductivity to stir the liquid to be processed. In FIG. 3, reference numeral 41 denotes a container made of a non-magnetic material containing a liquid to be treated. It is installed in close proximity. A rotating blade 45 that surrounds the permanent magnet 44 and is provided with a plurality of stirring blades 40 is disposed in the container 41 so as to face the superconducting bulk body 43 with the bottom surface of the container 41 interposed therebetween. The superconducting bulk body 43 is captured, and the permanent magnet 44 is supported in the liquid to be treated while maintaining a predetermined gap with the superconducting bulk body 43 by the pinning force of the superconducting bulk body 43. A support shaft 46 extending vertically is provided above the permanent magnet 44, and a passive permanent magnet 47 is attached to the tip of the support shaft 46. An active permanent magnet 48 for rotating the passive permanent magnet 47 is disposed outside the container 41 so as to face the passive permanent magnet 47, and the active permanent magnet 48 is rotationally driven by a rotating mechanism 49 such as a motor. A magnetic coupling 50 is constituted by the passive permanent magnet 47 and the active permanent magnet 48. When the active permanent magnet 48 is rotated by the rotation mechanism 49, the passive permanent magnet 47 is rotated in a non-contact manner.

Since the permanent magnet 44 is held in the vertical direction in the container 41 without touching the inner wall of the container by the pinning force of the superconducting bulk body 43, the passive permanent magnet 48 of the magnetic coupling 50 also has a predetermined gap from the active permanent magnet 49. Retained. The rotational force of the rotation mechanism 49 is transmitted to the support shaft 46 via the magnetic coupling 50, and the rotary blade 45 is rotationally driven without contact with the inner wall of the container 41. In this way, since the rotor blade 45 is supported and rotated in a non-contact manner with other components in the liquid to be processed, the liquid to be processed is agitated in a state where there is no mixing of impurities due to frictional wear occurring at the contact portion. can do.
JP 2000-124030 A (columns [0015] to [0017], FIG. 1)

   In order for the non-contact stirrer in Patent Document 1 to function, the permanent magnet 44 is removed from the bottom surface of the container 41 during the period in which the superconducting bulk body 43 is cooled by the refrigerator 42 and kept in a superconducting state prior to stirring. It is necessary to maintain a predetermined position apart. For this reason, the permanent magnet 44 is placed on the bottom surface of the container 41 with the spacer 52 interposed therebetween, the magnetic field generated by the permanent magnet 44 is applied to the superconducting bulk body 43, and the superconducting bulk body 43 is cooled to a superconducting state. It is necessary to remove the spacer 52 later.

   However, the inside of the container 41 is often smooth, and it is difficult to attach a protrusion or a dent that serves as a mark for installing the spacer 52 on the bottom surface of the container 41. If the spacer 52 is installed without a mark, the position of the superconducting bulk body 43 cannot be grasped from the inside, and it is difficult to accurately align the spacer 52 and the permanent magnet 44 with the superconducting bulk body 43. is there. Further, after the cooling of the superconducting bulk body 43 is completed, there is a possibility that impurities may enter the container 41 while the spacer 52 is taken out from the bottom surface of the container 41. In particular, the liquid to be processed is already filled in the container 41. In such a case, there is a possibility that the liquid to be treated is contaminated with impurities or outside air.

   The present invention has been made to solve the conventional problems, and when the superconducting bulk body is cooled to capture the magnetic field of the magnetic field capturing magnet corresponding to the permanent magnet of the rotor blade, the liquid to be treated is contaminated. It is to install a permanent magnet and a rotor blade while keeping a predetermined gap from the superconducting bulk body by a simple method without mixing impurities.

In order to solve the above-mentioned problems, the constitutional feature of the invention according to claim 1 is that a non-magnetic container for storing a liquid to be treated for stirring and a magnetic pole having a structure in which a superconducting bulk body is cooled by a refrigerator. A component, a rotating blade having a permanent magnet for stirring the liquid to be treated in the container, and a magnetic coupling for transmitting a rotational force for rotating the rotating blade from outside the container, The superconducting bulk body located at a stirring position close to the outer surface of the container and the permanent magnet are held in a predetermined gap by a pinning force, and all rotating parts do not contact the inner wall of the container. In the non-contact stirring apparatus in which the rotor blade is rotated by the magnetic coupling, the magnetic pole component is relatively moved to a magnetic field capturing position separated from the container, and the rotor blade is moved. permanent magnet Wherein the magnet emits a magnetic field comparable to the permanent magnet of the rotor blades to face while maintaining a predetermined gap without contact with the bulk superconductor as the magnetic field capture magnet positioned, the superconducting bulk the refrigerator the was cooled to below the superconducting transition temperature field of the magnetic field trapped magnet after captured in the superconducting bulk body, and positioning the superconducting bulk body to the stirring position moving relative to said container, said The rotor is supported by the action of a magnetic field between the permanent magnet and the superconducting bulk body by placing the rotor in the container so that the permanent magnet faces the magnetic pole component .

  The structural feature of the invention according to claim 2 is that, in the non-contact stirrer installation method according to claim 1, when the magnetic field of the magnetic field capturing magnet is captured by the superconducting bulk body, the magnetic pole A spacer made of a nonmagnetic material having a predetermined thickness is interposed between the superconducting bulk body of the component and the magnetic field capturing magnet, and the predetermined gap is stably maintained between the magnetic field capturing magnet and the superconducting bulk body. The superconducting bulk body is cooled to the superconducting transition temperature or lower by operating the refrigerator in a state.

The structural features of the invention according to claim 3 are: a non-magnetic container for storing a liquid to be treated for stirring; a magnetic pole structure having a structure in which a superconducting bulk body is cooled by a refrigerator; and a permanent magnet. A rotating blade for stirring the liquid to be treated in the container, and a magnetic coupling for transmitting a rotational force for rotating the rotating blade from the outside of the container, with respect to the outer surface of the container The superconducting bulk body located at the agitating position close to each other and the permanent magnet are held in a predetermined gap by a pinning force, and all the rotating parts are rotated by the magnetic coupling without contacting the inner wall of the container. In the non-contact stirrer configured to rotate the wing, a moving device is provided that moves the magnetic pole component relative to the container between the magnetic field capturing position spaced from the container and the stirring position. Eternity of rotor Wherein on the bulk superconductors in the magnetic field catch position magnets or magnet emits a magnetic field comparable to the permanent magnet of the rotor blade as a magnetic field capture magnet by a spacer of non-magnetic material with a predetermined gap disposed the superconducting bulk After the body is cooled to the superconducting transition temperature or lower by the refrigerator and the magnetic field of the magnetic field capturing magnet is captured by the superconducting bulk body, the superconducting bulk body is moved relative to the container by the moving device. By supporting the rotating blades placed in the container so that the permanent magnet faces the magnetic pole component by the action of a magnetic field between the permanent magnet and the superconducting bulk body. is there.

  The structural feature of the invention according to claim 5 is the non-contact stirrer according to claim 4, wherein the moving device moves the magnetic pole component between the stirring position and the magnetic field capturing position. A non-contact stirrer characterized by the above.

In the invention according to claim 1 configured as described above, the superconducting bulk body of the magnetic pole component is relatively moved to the magnetic field capturing position separated from the container for storing the liquid to be processed. A permanent magnet of the rotor blade or a magnet that generates a magnetic field of the same level as the permanent magnet of the rotor blade is arranged as a magnetic field capturing magnet so as to face each other with a predetermined gap without contacting the superconducting bulk body. The superconducting bulk body is cooled to below the superconducting transition temperature by a refrigerator, and the magnetic field of the magnetic field capturing magnet is captured by the superconducting bulk body. The superconducting bulk body is moved relative to the container and moved to a stirring position close to the outer surface of the container. The rotor blade is supported by the action of the magnetic field between the permanent magnet and the superconducting bulk body by placing the rotor blade in the container so that the permanent magnet faces the magnetic pole component .

As a result, the superconducting bulk body is cooled and the magnetic field capturing magnet corresponding to the permanent magnet of the rotor blade, that is, the magnetic field of the magnet that generates the same magnetic field as the permanent magnet of the rotor blade or the permanent magnet of the rotor blade is captured. In some cases, the liquid to be treated is not contaminated or mixed with impurities, and the permanent magnet and the rotor blade can be installed in a simple manner with a predetermined gap with respect to the superconducting bulk body and accurately facing each other. . In addition, since the rotor blade can be supported from the container wall surface such as the container bottom surface while maintaining a desired gap, if the deformation amount of the container wall surface is within an allowable range, the magnetic field of the permanent magnet can be captured in the superconducting bulk body. By setting the gap between them according to the amount of deformation, the rotor blade can be supported away from the deformed portion of the vessel wall surface, and the rotor blade including the magnetic coupling part can be adjusted by adjusting the position of the superconducting bulk body. The whole can be stably supported at a desired position inside the container without contacting the inner surface of the container.

  In the invention according to claim 2 configured as described above, a spacer made of a nonmagnetic material having a predetermined thickness is provided between the superconducting bulk body of the magnetic pole component, the permanent magnet of the rotor blade, and the corresponding magnetic field capturing magnet. By interposing, with the magnetic field capturing magnet and the superconducting bulk body stably maintaining a predetermined gap, the superconducting bulk body is cooled below the superconducting transition temperature by operating the refrigerator, and the magnetic field capturing magnet magnetic field is reduced. It can be trapped in a superconducting bulk body.

In the invention according to claim 3 configured as described above, the superconducting bulk body of the magnetic pole component is relatively moved to the magnetic field capturing position by the moving device. A permanent magnet of the rotor blade or a magnet that generates a magnetic field of the same level as the permanent magnet of the rotor blade is disposed as a magnetic field capturing magnet on the superconducting bulk body at a magnetic field capturing position with a predetermined gap by a non-magnetic spacer. The superconducting bulk body is cooled to below the superconducting transition temperature by a refrigerator, and the magnetic field of the magnetic field capturing magnet is captured by the superconducting bulk body. The superconducting bulk body is moved relative to the container by the moving device and is moved relatively to the stirring position close to the outer surface of the container. A rotor blade placed in a container is supported by the action of a magnetic field between the permanent magnet and the superconducting bulk body so that the permanent magnet faces the magnetic pole component .

  As a result, when the superconducting bulk body is cooled to capture the magnetic field of the magnetic field capturing magnet corresponding to the permanent magnet of the rotor blade, the liquid to be treated is not contaminated or mixed with impurities, and the permanent magnet is extended. It is possible to provide a stirrer capable of installing the rotor blades in a simple manner so as to be accurately opposed to the superconducting bulk body while maintaining a predetermined gap. In addition, since the degree of freedom of setting to support the rotor blades from the superconducting bulk body with a predetermined gap is increased, the predetermined gap is adjusted according to the shape of the container, for example, for a container having a gently curved bottom surface. Yes, there may be a step or a groove on the bottom.

  In the invention according to claim 5 configured as described above, since the moving device moves the magnetic pole component between the stirring position and the magnetic field capturing position, the superconducting bulk body of the magnetic pole component approaches the outer surface of the container. The stirring position and the superconducting bulk body can be easily moved between the permanent magnet of the stirring blade and the magnetic field capturing position for capturing the magnetic field of the corresponding magnetic field capturing magnet.

  DESCRIPTION OF EMBODIMENTS A first embodiment of a non-contact stirring device installation method and a non-contact stirring device using the method according to the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 11 denotes a magnetic pole component, and the magnetic pole component 11 is mainly composed of a superconducting bulk body 12 and a refrigerator 13. The superconducting bulk body 12 is accommodated in the vacuum vessel 14. The vacuum vessel 14 is provided with a vacuum pressure reducing port 15 and is connected to a vacuum pump (not shown). The refrigerator 13 is connected to the compressor by pipes 16 and 17 of helium gas, and cools the superconducting bulk body 12 to a low temperature of about 30K. The refrigerator 13 may be a known GM type, a pulse tube refrigerator, a solver type, a Stirling type, or a combination of these.

  The magnetic pole component 11 is moved between the magnetic field capturing position A and the stirring position B by the swivel moving device 18. The swivel moving device 18 includes a rotating shaft 20 that is supported by a shaft base 19 so as to be rotatable about a vertical axis, a swiveling shaft 21 that has one end fixed to the rotating shaft 20 and extends in the horizontal direction, and the like. A magnetic pole component 11 is connected to the other end. In the stirring position B, a container 22 made of a non-magnetic material is fixed. The container 22 includes a container body 22a and an openable / closable lid 22b. The superconducting bulk body 12 of the magnetic pole component 11 located at the stirring position B is disposed opposite to the bottom outer surface of the container body 22a, and the disk supported by the superconducting bulk body 12 by the pinning force inside the container body 22a. A rotor blade 24 having a permanent magnet 23 is disposed. The permanent magnet 23 is a floating permanent magnet 23 that floats while being supported from below by the superconducting bulk body 12 inside the container body 22a. In the rotary blade 24, a plurality of stirring blades 25 are attached around the floating permanent magnet 23, a support shaft 26 projects vertically from the center of the upper surface of the floating permanent magnet 23, and a passive permanent magnet 27 is formed at the upper end of the support shaft 26. The adjustment screw 28 is attached so that the position can be adjusted. The levitation permanent magnet 23 is a magnet having different polarities on the upper surface and the lower surface. For example, if the upper surface is an S pole, the lower surface is an N pole. The passive permanent magnet 27 has a disk shape, and S and N magnetic poles are formed by alternately combining a plurality of magnets in the circumferential direction. An active permanent magnet 29 is attached above the passive permanent magnet 27 with a lid 22b interposed therebetween. The active permanent magnet 29 has the same structure as the passive permanent magnet 27 and is rotated by a rotating mechanism 30 such as a connected motor. These passive permanent magnet 27 and active permanent magnet 29 constitute a magnetic coupling 31.

  When the magnetic pole component 11 is moved to the magnetic field capture position A by the swivel moving device 18, the nonmagnetic spacer 32 is placed on the upper surface 14 a of the vacuum vessel 14 where the upper surface of the superconducting bulk body 12 of the magnetic pole component 11 is close. The floating permanent magnet 23 of the rotor blade 24 is placed on the spacer 32 as a magnetic field capturing magnet. As a result, when the superconducting bulk body 12 is cooled below the superconducting transition temperature by the operation of the refrigerator 13 and captures the magnetic field of the levitating permanent magnet 23, the levitating permanent magnet 23 maintains a predetermined gap with the superconducting bulk body 12. And stable.

  Next, the operation of the above embodiment will be described. First, the magnetic pole component 11 is moved to the magnetic field capturing position A separated from the container 22 by the swivel moving device 18. Next, a spacer 32 made of a non-magnetic material having a predetermined thickness is placed on the magnetic pole component 11, and the floating permanent magnet 23 itself of the rotor blade 24 is placed on the spacer 32 as a magnetic field capturing magnet. As a result, the levitating permanent magnet 23 is stably held on the magnetic pole component 11 with the spacer 25 by maintaining a predetermined gap between the levitating permanent magnet 23 and the magnetic field generated by the levitating permanent magnet 23 is applied to the superconducting bulk body 12. Applied. The refrigerator 13 is operated and the superconducting bulk body 12 is cooled below the superconducting transition temperature to capture the magnetic field of the floating permanent magnet 23. Next, the rotor blade 24 and the spacer 32 are removed from the magnetic pole component 11, and the magnetic pole component 11 is moved by the swivel moving device 18 to the stirring position B facing the bottom outer surface of the container 22 in which the liquid to be processed is stored.

  The lid 22b of the container 22 is opened, and the rotor blade 24 is placed in the container body 22a at a position facing the magnetic pole component 11 with the floating permanent magnet 23 facing down and the passive permanent magnet 27 facing up. At this time, since the magnetic field has already entered from the outside of the container to the inside, the rotor blades 24 are strongly attracted toward the bottom surface of the container 22, but the superconducting bulk 12 has the superconducting bulk 12 of the floating permanent magnet 23. When the magnetic field is captured, the floating permanent magnet 23 is supported by the pinning force while maintaining the gap set by the spacer 32. When the lid 22b is closed in this state, the upper surface of the passive permanent magnet 27 faces the lower surface of the lid 22b without touching it. As a result, the rotor blade 24 is supported in the container 22 so as to be rotatable without touching the inner wall of the container 22 at any part. The clearance dimension between the upper surface of the passive permanent magnet 27 and the lower surface of the lid 22 b is set by adjusting the vertical position of the passive permanent magnet 27 with respect to the support shaft 26 using the adjusting screw 28. In this way, the adjustment screw 28 can adjust the length of both ends of the rotor blade 24, that is, the distance between the upper surface of the passive permanent magnet 27 and the lower surface of the floating permanent magnet 23. On the other hand, the rotary blade 24 can be used.

  The active permanent magnet 29 connected to the rotating mechanism 30 is fixed to a frame (not shown) so as to face the passive permanent magnet 27 without touching the upper surface of the lid 22b. When the active permanent magnet 29 is rotationally driven by the rotation mechanism 30, the passive permanent magnet 27 constituting the active permanent magnet 29 and the magnetic coupling 31 is rotated in response to the magnetic field transmitted through the lid 22 b to rotate the rotor blade 22. Then, the liquid to be treated stored in the container 22 is stirred by the plurality of stirring blades 25. Since the superconducting bulk body 12 supports the floating permanent magnet 23 by the pinning force even while the rotating blade 24 is rotating and the agitation operation is being performed, the rotating blade 24 does not touch the inner wall of the container 22 completely. In contact.

  Note that the gap between the superconducting bulk body 12 and the levitation permanent magnet 23 set by the spacer 32 and determined by capturing the magnetic field of the superconducting bulk body 12 is between the active permanent magnet 29 and the passive permanent magnet 27 by the magnetic coupling 31. Since it slightly increases or decreases depending on the generated suction force, it does not necessarily exactly match the distance obtained by adding the distance between the upper surface of the superconducting bulk body 12 and the upper surface of the vacuum vessel 14 to the thickness of the spacer 32. Has no effect.

  A second embodiment will be described with reference to FIG. In the first embodiment, the magnetic pole component 11 is swung between the magnetic field capturing position A and the stirring position B by the swivel moving device 18, whereas in the second embodiment, the magnetic pole component 11 is moved by the linear moving device 35. It is moved between the magnetic field capturing position A and the stirring position B. Since the second embodiment is different from the first embodiment only in this point, the linear moving device 35 will be described below. The linear moving device 35 includes a linear pedestal 33 and a linear moving body 34 to which the magnetic pole component 11 is attached. The linear moving body 34 is mounted on the linear base 33 so as to be linearly movable, and moves the magnetic pole component 11 linearly between the magnetic field capturing position A and the stirring position B.

  In the embodiment shown in FIG. 1 and FIG. 2, the swivel moving device 18 and the linear moving device 35 manually swivel or linearly move the rotary shaft 11 and the linear moving body 34. You may make it turn and linearly move by a power drive device.

  The bottom surface of the container body 22a does not necessarily have to be a horizontal plane, and may be inclined if the gap between the lower surface of the rotary blade 24 and the bottom surface of the container body 22a allows, Alternatively, there may be a step or a groove.

  In the above embodiment, the magnetic pole component is moved between the magnetic field capturing position and the stirring position, but the magnetic pole component is fixed, and the standby position where the container is separated from the stirring position and the magnetic pole component on the magnetic pole structure. You may make it move between.

  In the above embodiment, the magnetic pole component 11 is positioned at a stirring position that approaches the outer surface of the bottom of the container 22, but the stirring position of the magnetic pole component 11 is at the bottom of the container 22. It need not be located on the outer surface side. Contrary to the above embodiment, the stirring position of the magnetic pole component 11 can be positioned on the upper outer surface side of the container 22. In this case, the magnetic coupling 31 is disposed on the bottom outer surface side of the container 22.

  In the above embodiment, the permanent magnet of the rotor blade itself is placed on the magnetic pole structure via the spacer at the magnetic field capturing position as the magnetic field capturing magnet. Is placed on the magnetic pole component so as to be opposed to the superconducting bulk body without contacting the superconducting bulk body as a magnetic field capturing magnet corresponding to the permanent magnet of the rotor blade, and in this state, the superconducting bulk body is placed by a refrigerator. The superconducting bulk body may capture the magnetic field of the magnetic field capturing magnet by cooling to a superconducting transition temperature or lower.

The figure which shows 1st Embodiment of the non-contact stirring apparatus which concerns on this invention. The figure which shows 2nd Embodiment of the non-contact stirring apparatus which concerns on this invention. The figure which shows the conventional non-contact stirring apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Magnetic pole composition, 12 ... Superconducting bulk body, 13 ... Refrigerator, 14 ... Vacuum container, 18 ... Swing movement apparatus, 20 ... Support shaft, 22 ... Container, 22a ... Container main body, 22b ... Cover, 23 ... Permanent magnet (Magnetic for capturing magnetic field) 24 ... rotary blade 25 ... stirring blade 26 ... support shaft 27 ... passive permanent magnet 28 ... adjusting screw 29 ... active permanent magnet 30 ... rotating mechanism 31 ... magnetic coupling, 32 ... Spacer, 35 ... Linear motion moving device, A ... Magnetic field capturing position, B ... Stirring position.

Claims (4)

A non-magnetic container for storing the liquid to be treated for stirring;
A magnetic pole structure having a structure in which a superconducting bulk body is cooled by a refrigerator; and
A rotating blade for stirring the liquid to be treated in the container having a permanent magnet;
A magnetic coupling for transmitting a rotational force for rotating the rotor blade from outside the container,
The superconducting bulk body located at a stirring position close to the outer surface of the container and the permanent magnet are held in a predetermined gap by a pinning force, and all rotating parts do not contact the inner wall of the container. In the installation method of the rotor blades in the non-contact stirrer in which the rotor blades are rotated by the magnetic coupling,
The superconducting bulk is configured such that the magnetic pole component is relatively moved to a magnetic field capturing position separated from the container and a permanent magnet of the rotor blade or a magnet that generates a magnetic field similar to the permanent magnet of the rotor blade is used as a magnetic field capturing magnet. The superconducting bulk body is placed below the superconducting transition temperature by the refrigerator to capture the magnetic field of the magnetic field capturing magnet in the superconducting bulk body. Later, the superconducting bulk body is moved relative to the container and positioned at the stirring position, and the rotor blade is placed in the container so that the permanent magnet faces the magnetic pole component. A method of installing a rotating blade in a non-contact stirring apparatus, wherein the rotating blade is supported by the action of a magnetic field between the permanent magnet and the superconducting bulk body. The method of installing a rotating blade in a non-contact stirrer according to claim 1, wherein when the superconducting bulk body captures the magnetic field of the magnetic field capturing magnet, the superconducting bulk body of the magnetic pole component, the magnetic field capturing magnet, A spacer made of a nonmagnetic material having a predetermined thickness is interposed between the magnetic field capturing magnet and the superconducting bulk body in a state where the predetermined gap is stably maintained and the superconducting bulk body is operated by operating the refrigerator. A method of installing a rotor blade in a non-contact stirrer characterized by cooling to the superconducting transition temperature or lower. A non-magnetic container for storing the liquid to be treated for stirring;
A magnetic pole structure having a structure in which a superconducting bulk body is cooled by a refrigerator; and
A rotating blade for stirring the liquid to be treated in the container having a permanent magnet;
A magnetic coupling for transmitting a rotational force for rotating the rotor blade from outside the container,
The superconducting bulk body located at a stirring position close to the outer surface of the container;
In the non-contact stirrer that holds the gap between the permanent magnets in a predetermined gap by a pinning force and rotates the rotating blades with the magnetic coupling without contacting all the rotating parts with the inner wall of the container.
A moving device for moving the magnetic pole component relative to the container between a magnetic field capturing position separated from the container and the stirring position; and a permanent magnet of the rotor blade or a permanent magnet of the rotor blade superconducting transition temperature by the refrigerator said by spacers of a non-magnetic material on the bulk superconductors arranged keeping a predetermined gap the bulk superconductor in the magnetic field catch position a magnet that emits the same degree of magnetic field as a magnetic field trapping magnet After cooling to below and capturing the magnetic field of the magnetic field capturing magnet in the superconducting bulk body, the superconducting bulk body is moved relative to the container by the moving device and located at the stirring position, the permanent magnet is supported by the effect of the magnetic field of the permanent magnet the rotor blades placed in the container so as to be opposed to the magnetic pole arrangement and the bulk superconductor Non-contact stirring apparatus characterized. The non-contact stirring apparatus according to claim 3 , wherein the moving device moves the magnetic pole component between the stirring position and the magnetic field capturing position.

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