JP2008018422A - Apparatus for separating and removing micromagnetic particles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for separating and removing micromagnetic particles capable of efficiently achieving attraction, separation and removal of micromagnetic particles contained in a fluid passing through a path formed between the counter surfaces of magnetic pole bodies, by arranging magnetic bodies at positions between the counter surfaces of the magnetic pole bodies comprising a pair of electromagnets or permanent magnets of which the opposed surfaces are energized or held mutually heteropolarly, regularly or irregularly being separated from one another with required spaces, or capable of multi-functionally achieving attraction, separation and removal of the micromagnetic particles under heated conditions. <P>SOLUTION: The apparatus for separating and removing micromagnetic particles consists of a constitution such that the pair of magnetic pole bodies 14A and 14B comprising the electromagnets or permanent magnets are arranged counter to each other while being energized or held mutually heteropolarly, the path 16 for passing a fluid containing micro magnetic particles is formed between the counter surfaces of the pair of the magnetic pole bodies, and magnetic bodies 18 (20) for attracting the micromagnetic particles, which are positioned regularly or irregularly and separated from one another with required spaces, are arranged. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a magnetic filter using an electromagnet or a permanent magnet, and in particular, fine magnetic particles are disposed between opposed surfaces arranged opposite to each other by energizing or holding a pair of magnetic pole bodies made of an electromagnet or a permanent magnet. By optimally arranging magnetic materials for adsorption, fine magnetic particles contained in fluids such as various powders, gases, and liquids can be efficiently separated and removed at room temperature or under heating conditions. The present invention relates to an apparatus for separating and removing fine magnetic particles configured so as to be able to perform such a process.

  Conventionally, as a magnetic filter for removing magnetic particles in a fluid, a filter body (steel wire mesh, which is made of a ferromagnetic material and manages adsorption of magnetic particles inside a cylindrical container having an inlet and an outlet for fluid. Steel wool, etc.) is provided on the outside of the container, and an electromagnet made of a coil wound around the peripheral surface of the container is provided, and the filter body is magnetized by forming magnetic lines of force in a predetermined direction by the electromagnet. Disclosed is a configuration in which magnetic particles mixed in a fluid guided into a container and passing through a filter body and discharged from a discharge port are separated and removed by magnetic adsorption to the magnetized filter body. In addition, there has been proposed a magnetic filter that can use a permanent magnet as means for magnetizing the filter body (see Patent Document 1).

  In addition, a part of a rotating drum having a magnet is faced and rotated in the flow path through which the activated sludge liquid added with magnetic powder flows, and the activated sludge is magnetically adsorbed by the magnet and separated into activated sludge and treated water. As a magnetic separator for activated sludge for recovery, a curved flow path is formed in the lower part of the rotating drum to cover the lower outer periphery and side surface of the rotating drum, and the flow direction of the flow path on the outer periphery of the rotating drum There has been proposed a magnetic separation device having a configuration in which a bowl-shaped magnetic adsorption member that is divided into right and left is provided, and a scraping member that removes activated sludge adsorbed on the magnetic adsorption member is provided on the upper part of the rotating drum ( Patent Document 2).

  That is, in the magnetic separation device described in Patent Document 2, the magnetic attracting member is a disk formed of a thin disk, and as an example of the configuration of the disk, for example, a sheet formed of ferrite magnets magnetized alternately in a band shape There are disclosed a configuration in which magnets are arranged in parallel, or a configuration in which a large number of cylindrical magnets are arranged at a predetermined interval on the outer periphery of a disk.

  On the other hand, in recent years, with the rapid development of the electronics industry, non-magnetic metal oxides such as high-purity silica and alumina have been used for electronic materials and semiconductor manufacturing, and device products have become more sophisticated. Accordingly, the demand for nonmagnetic metal oxides used in semiconductor sealing materials is not only to reduce the impurity concentration, but also to reduce the number of foreign substances other than the components contained in the nonmagnetic metal oxide. Therefore, by bringing the non-magnetic metal oxide powder into contact with a magnet having a magnetic force of 1000 gauss or more, the magnetic particles as foreign matter or impurities mixed in the non-magnetic metal oxide powder A method for producing a high-purity nonmagnetic metal oxide powder that is configured to remove water has been proposed (see Patent Document 3).

  That is, in the method for producing a high-purity nonmagnetic metal oxide powder described in Patent Document 3, as a magnet for removing magnetic particles as foreign matters or impurities mixed in the nonmagnetic metal oxide powder, its shape Although there is no particular limitation, it is preferable to use a grid-shaped magnet. For example, the interval between the magnets is set to 2 mm or more, and several rod-shaped magnets are arranged horizontally, and the powder passes through the gap. It is disclosed that foreign particles are adsorbed and removed by a magnet.

  In the magnetic filter described in Patent Document 1 or the magnetic separation apparatus described in Patent Document 2, magnetic particles as foreign matters or impurities mixed in nonmagnetic metal oxide powder used for electronic materials or semiconductor manufacturing It is structurally unsuitable to remove fine magnetic particles efficiently and reliably as a means for removing the particles.

  Further, in order to efficiently attract and remove such fine magnetic particles, it is necessary that the magnetic field (magnetizing force) around the magnetic pole by the magnet is strong and the change in magnetic field (magnetic field gradient) is large. However, in the configuration and arrangement of the lattice-like magnets as described in Patent Document 3, for example, no matter how the polarity arrangement of the bar magnets is set, the strength of the magnetic field (magnetizing force) or the change in the magnetic field ( There is a limit to increasing the magnetic field gradient), and there is a difficulty in not being able to perform satisfactory adsorption or removal of magnetic particles.

  From such a point of view, the present inventors are able to set a large change in magnetic field on the opposing surfaces of a pair of opposing magnetic pole bodies or opposing surfaces of a permanent magnet of electromagnets held in different polarities. A device for removing fine magnetic particles capable of efficiently adsorbing and removing fine magnetic particles by alternately providing recesses and recesses was developed, and a patent application was filed (see Patent Document 4).

  That is, in the apparatus for removing fine magnetic particles described in Patent Document 4, the magnetic pole bodies of a pair of opposed electromagnets biased to different polarities by electromagnetic coils or permanent magnets are regularly or irregularly arranged. By providing a convex portion and a concave portion located adjacent to each other at a required interval symmetrically, the magnetic field change (magnetic field gradient) can be set large, and fine magnetic particles can be efficiently adsorbed and removed. It is something that can be done. In addition, by changing various shapes of the convex portions and the concave portions provided alternately on the facing surface side of the magnetic pole body, the change (magnetic field gradient) of the magnetic field on the facing surface of the magnetic pole body can be set large. The fine magnetic particles can be efficiently adsorbed and removed.

  Further, conventionally, as a means for separating or selecting particles or powders of a plurality of types of ferromagnetic materials (for example, materials including Ni, Co, Fe, etc.), each of the ferromagnetic materials has a different Curie temperature. Therefore, when selecting the required particles or powders, the ferromagnetic material whose heating temperature is higher than the Curie temperature becomes paramagnetic by heating corresponding to the required Curie temperature, and the ferromagnetic material whose temperature is lower than the Curie temperature. It is known that can be magnetically separated.

  Based on such a known technique, for example, a structure including a rare earth magnet having different Curie temperatures and a ferromagnetic material is heated to an intermediate temperature between the Curie temperatures, thereby having a Curie temperature exceeding the heating temperature. Ferromagnetic materials maintain the property of being magnetically attracted to the magnet, but rare earth magnets with Curie temperatures below the superheat temperature lose their magnetically attracted properties. Separation method in which a ferromagnetic material having a Curie temperature exceeding the heating temperature and a rare earth magnet having a Curie temperature equal to or lower than the superheat temperature can be separated by the magnetic attraction force of the magnet on the surface of the arranged conveyor belt And a sorting device has been proposed (see Patent Document 5).

  In the separation method and the separation apparatus described in Patent Document 5, a structure including a rare earth magnet having a first Curie temperature and a ferromagnetic material having a second Curie temperature higher than the first Curie temperature, A step of heating to an intermediate temperature between the first and second Curie temperatures, and a step of selecting the ferromagnetic material from the heated structure by magnetic attraction and transporting it to the first shooter. A ferromagnetic material having a second Curie temperature higher than the temperature is collected in the first shooter, and a structure including a rare earth magnet having the first Curie temperature is collected in the second shooter. In this case, an electromagnetic induction type high-frequency heating device is used as the heating means.

JP-A-7-68109 JP-A-8-168790 JP 2004-10420 A JP 2006-15185 A JP 2001-219093 A

  However, in the apparatus for removing fine magnetic particles described in Patent Document 4 described above, between the opposing surfaces of the magnetic pole bodies of a pair of opposingly arranged electromagnets biased to different polarities by an electromagnetic coil or a permanent magnet, As a passage for flowing fluid containing fine magnetic particles, and setting the passage interval, even if the passage interval is increased to increase the fluid processing capacity, there is a limit to the adsorption and removal ability of the fine magnetic particles, Efficient adsorption removal cannot be performed. Therefore, it is possible to increase the capacity of the electromagnetic coil and the permanent magnet. However, in the case of such a configuration, the equipment cost and the operating cost increase, which is economically disadvantageous.

  Moreover, in the sorting apparatus described in Patent Document 5 described above, a dedicated apparatus intended to use a heating means, and a transport belt is used as a means for transporting the material to be sorted, resulting in a large facility. However, there is a drawback that the equipment cost and the operation cost increase.

  Accordingly, as a result of various examinations and trial manufactures, the present inventors have arranged a pair of magnetic pole bodies made of electromagnets or permanent magnets to be opposed to each other while biasing or holding them with different polarities, and facing surfaces of these pair of magnetic pole bodies A passage for allowing a fluid containing fine magnetic particles to flow therethrough is formed therebetween, and a plurality of magnetic materials are formed in the passage at a predetermined angle with respect to the opposing surface of the magnetic pole body. By disposing the rod-shaped body, the flow rate of the fluid flowing through the passage can be increased, and adsorption / separation / removal of the fine magnetic particles contained in the fluid can be achieved effectively and efficiently. I found out.

  In the present invention, the magnetic body disposed between the opposing surfaces of the pair of magnetic pole bodies is composed of a rod-like body made of a magnetic material, and the rod-like bodies are spaced apart by a predetermined angle with respect to the opposing surface side of the magnetic pole body. In this case, the rod-shaped body can be composed of, for example, a cylinder, a prism, a cone, a pyramid, a flat plate, etc., and these structures make it possible to efficiently separate and remove fine magnetic particles. Can be done.

  In the present invention, a rod-shaped body made of a magnetic material is used to form a rod-shaped body unit by holding one end, both ends, or an intermediate portion thereof with a support plate, and the rod-shaped body unit is disposed between the opposing surfaces of the pair of magnetic pole bodies. The adsorbing / separating operation process of the fine magnetic particles can be performed in a holder that is provided with a fluid inlet and outlet in the flow direction of the fluid containing the fine magnetic particles. The advantage that the handling at the time of the cleaning work and maintenance work of a stick state after that becomes simple is acquired.

  Furthermore, in the present invention, a pair of magnetic pole bodies composed of electromagnets or permanent magnets that are opposed to each other while being biased or held with different polarities are regularly or irregularly spaced from each other. By adopting a configuration in which convex portions and concave portions located adjacent to each other are provided symmetrically, it is possible to enhance the magnetization of the magnetic material and achieve adsorption separation and removal of fine magnetic particles more efficiently. It becomes.

  Furthermore, in the present invention, in the configuration for separating and removing the fine magnetic particles having the above-described configuration, the fluid flowing through the fluid is superheated on the inner surface side of the passage through which the fluid containing the fine magnetic particles flows. By arranging a heating device for this purpose, for example, it is possible to easily select particles or powders made of a ferromagnetic material having different Curie temperatures.

  In addition, by providing a heating device, it is possible to easily separate and remove foods such as chocolate that can be solidified at room temperature and fluidized by heating, and magnetic materials as foreign substances contained in synthetic resin materials and the like. It becomes possible.

  Accordingly, an object of the present invention is to place a regular or irregular spacing between opposed surfaces of a magnetic pole body made of a pair of electromagnets or permanent magnets each biasing or holding the opposed surfaces with different polarities. By arranging the magnetic material, adsorption separation and removal of the fine magnetic particles contained in the fluid flowing through the passage formed between the opposing surfaces of the magnetic pole body can be efficiently achieved, or the fine magnetic particles can be obtained under heating conditions. An object of the present invention is to provide an apparatus for separating and removing fine magnetic particles capable of achieving adsorption and separation of particles multifunctionally.

  In order to achieve the above object, the apparatus for separating and removing fine magnetic particles according to claim 1 of the present invention is arranged so that a pair of magnetic pole bodies made of electromagnets or permanent magnets are biased or held to different polarities, respectively. A passage for allowing a fluid containing fine magnetic particles to flow between the opposing surfaces of the pair of magnetic pole bodies is formed, and the fine magnetic particles are regularly or irregularly spaced in the passage. It is characterized in that a magnetic material for adsorbing is disposed.

  According to a second aspect of the present invention, there is provided a device for separating and removing fine magnetic particles, wherein a pair of magnetic pole bodies made of electromagnets or permanent magnets are biased or held in different polarities, and are opposed to each other. A passage for flowing a fluid containing fine magnetic particles is formed between the surfaces, a heating device for superheating the fluid flowing on the inner surface side of the passage is disposed, and the passage is regularly arranged in the passage. Alternatively, a magnetic material for adsorbing fine magnetic particles that are irregularly spaced apart from each other at predetermined intervals is disposed.

  According to a third aspect of the present invention, there is provided the apparatus for separating and removing fine magnetic particles, wherein the magnetic body disposed between the opposing surfaces of the pair of magnetic pole bodies is a rod-shaped body made of a magnetic material. It is characterized in that a plurality are provided at a predetermined angle with respect to the opposite surface side of the body at a predetermined interval.

  The apparatus for separating and removing fine magnetic particles according to claim 4 of the present invention is a rod-shaped body made of a magnetic material disposed between the opposing surfaces of the pair of magnetic pole bodies, and is made of a cylinder, a prism, a cone, a pyramid, a flat plate, or the like. It is characterized by comprising.

  The apparatus for separating and removing fine magnetic particles according to claim 5 of the present invention intersects the plurality of rods with a fluid containing fine magnetic particles flowing down a passage formed between opposing surfaces of the magnetic pole body. It arrange | positions in each direction, It is characterized by the above-mentioned.

  In the apparatus for separating and removing fine magnetic particles according to claim 6 of the present invention, the plurality of rod-shaped bodies are arranged in a straight line between the opposing surfaces of the magnetic pole bodies, and the separation distances of all the rod-shaped bodies are equal. It is characterized by setting as follows.

  The apparatus for separating and removing fine magnetic particles according to claim 7 of the present invention is a rod-shaped body made of a magnetic material disposed between the opposed surfaces of the pair of magnetic pole bodies, and one end, both ends, or an intermediate portion thereof is a support plate. A rod-shaped body unit is configured to be held, and the rod-shaped body unit can be inserted and removed between the opposed surfaces of the pair of magnetic pole bodies, and a fluid inlet and outlet are disposed in the flow direction of the fluid including fine magnetic particles. It is characterized by comprising a configuration in which each is provided in a holder provided.

  The apparatus for separating and removing fine magnetic particles according to claim 8 of the present invention is configured such that the holder for housing the rod-shaped body surrounds the inner peripheral surface between the opposed surfaces of the pair of magnetic pole bodies by a nonmagnetic material. It is characterized by that.

  The apparatus for separating and removing fine magnetic particles according to claim 9 of the present invention provides a pair of magnetic pole bodies composed of electromagnets or permanent magnets that are biased or held in different polarities and are opposed to each other with respect to the opposing surfaces. The projections and the recesses that are adjacent to each other at regular intervals or regularly are provided symmetrically.

  According to the apparatus for separating and removing fine magnetic particles according to claim 1 of the present invention, the fine magnetic particles are separated between the opposed surfaces of a pair of magnetic pole bodies composed of electromagnets or permanent magnets that are biased or held with different polarities. A passage for allowing a fluid containing magnetic particles to flow therethrough is formed, and the passage is separated from the opposing surface of the magnetic pole body by a predetermined angle at a predetermined interval, for example, a rod-shaped body made of a plurality of magnetic materials. By arranging the magnetic material, the flow rate of the fluid flowing through the passage can be increased, and adsorption / separation / removal of the fine magnetic particles contained in the fluid can be achieved effectively and efficiently. .

  According to the apparatus for separating and removing fine magnetic particles according to claim 2 of the present invention, heating for heating the fluid flowing through the inner surface of the passage for flowing the fluid containing the fine magnetic particles is performed. By arranging the device, it is possible to easily and easily select particles or powders made of ferromagnetic materials having different Curie temperatures, and to be contained in foods or synthetic resins that are fluidized by heating. Separation and removal of the magnetic material as foreign matter can be easily achieved. Therefore, in this case, compared with the conventional apparatus for separating and removing fine magnetic particles, the structure is relatively small, the equipment cost and the operation cost are reduced, and the multi-function can be realized. An apparatus for separating and removing magnetic particles can be provided.

  According to the apparatus for separating and removing fine magnetic particles according to claims 3 and 4 of the present invention, a rod-shaped body made of a magnetic material is used as the configuration of the magnetic body disposed between the opposed surfaces of the pair of magnetic pole bodies. The rod-shaped body is set in a shape of, for example, a cylinder, a prism, a cone, a pyramid, a flat plate, etc. Thus, an apparatus that can efficiently achieve the separation / removal of fine magnetic particles can be realized at a relatively low cost.

  According to the apparatus for separating and removing fine magnetic particles according to claims 5 and 6 of the present invention, the plurality of rod-shaped bodies are turned into a fluid containing fine magnetic particles flowing down the passage formed between the opposing surfaces of the magnetic pole body. Adsorbing fine magnetic particles by arranging them in the crossing direction or in a straight line between the opposing surfaces of the magnetic pole bodies and setting the separation distances of all the rods to be equal. Separation and removal can be achieved even more efficiently.

  According to the apparatus for separating and removing fine magnetic particles according to the seventh and eighth aspects of the present invention, the plurality of rod-like bodies constituting the magnetic body that performs adsorption separation and removal of the fine magnetic particles are respectively at one end, both ends, or the middle. A rod-shaped body unit is configured by holding the part with a support plate, and this rod-shaped body unit is housed in a holder provided with a fluid inlet and outlet in the flow direction of the fluid containing fine magnetic particles. With this configuration, it is possible to easily and easily put in and out between the opposed surfaces of the pair of magnetic pole bodies, and equipment, cleaning, maintenance work, etc. in the fine magnetic particle adsorption separation operation processing of the apparatus can be efficiently performed. it can.

  According to the apparatus for separating and removing fine magnetic particles according to claim 9 of the present invention, by adopting the previously proposed configuration as the configuration of the magnetic pole body that magnetizes the magnetic material that performs adsorption separation and removal of the fine magnetic particles. Thus, adsorption separation and removal of fine magnetic particles can be achieved more efficiently.

  Next, embodiments of the apparatus for separating and removing fine magnetic particles according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows the principle configuration of a first embodiment of a separation and removal apparatus for fine magnetic particles according to the present invention. That is, in FIG. 1, reference numeral 10 denotes a C-shaped yoke of an electromagnet. Electromagnetic coils 12A and 12B are wound around opposite sides of the yoke 10, and different surfaces are provided on the opposing surfaces of the yoke 10. A pair of magnetic pole bodies 14A and 14B urged by polarity are coupled and arranged. A permanent magnet can be used in place of the electromagnet as means for holding the pair of magnetic pole bodies 14A and 14B in different polarities.

  The opposing surfaces of the pair of magnetic pole bodies 14A and 14B biased or held in the different polarities are spaced apart from each other at a required interval, and a fluid containing fine magnetic particles flows between the opposing surfaces. A passage 16 is formed for passing. In the passage 16 thus formed, a magnetic body 18 for adsorbing fine magnetic particles is disposed so as to be regularly or irregularly spaced from each other.

  Next, in the apparatus for separating and removing fine magnetic particles having the basic structure described above, the magnetic body 18 is disposed between the opposing surfaces of the pair of magnetic pole bodies 14A and 14B biased or held in different polarities. An example will be described.

  2A to 2D show an embodiment of the magnetic body 18 disposed between the opposing surfaces of the pair of magnetic pole bodies 14A and 14B. That is, in the present embodiment, the pair of magnetic pole bodies 14A and 14B are each formed in a rectangular plate shape (see FIGS. 2A and 2D), and between the opposing surfaces of these magnetic pole bodies 14A and 14B, magnetic A plurality of rod-shaped bodies 20 made of a material are arranged so as to be aligned as shown in the figure. In this case, the plurality of rod-like bodies 20 are preferably cylinders having the same diameter as shown in FIGS. 2A and 2C, and a passage 16 formed between the opposing surfaces of the magnetic pole bodies 14A and 14B. Are arranged in parallel with each other in a direction intersecting with the fluid containing the fine magnetic particles flowing down (see FIGS. 2A and 2B). In addition, the plurality of rod-like bodies 20 are arranged in a straight line between the opposing surfaces of the magnetic pole bodies 14A and 14B, and the separation distances of all the rod-like bodies 20 are set to be equal to each other. Uniform magnetization can be achieved by increasing the magnetization efficiency of the magnetic body 18 composed of a plurality of rod-shaped bodies 20 by 14B [see FIG. 2 (c)].

  In addition, about the some rod-shaped body 20 which consists of a magnetic material mentioned above, it can set to shapes, such as a prism, a cone, a pyramid, a flat plate, for example, without being limited to the cylindrical shape of the example of illustration. And when the rod-shaped body 20 is made into these shapes, not only the diameter dimensions can be set to arbitrary dimensions, but also different shapes or combinations of dimensions having different diameters can be used. Further, these rod-shaped bodies 20 may intersect perpendicularly or obliquely with respect to the fluid, and the rod-shaped bodies 20 may be non-parallel to each other or spaced apart from each other. Any arrangement that can increase the magnetization efficiency is sufficient.

  Further, when the plurality of rod-shaped bodies 20 are configured as one set of magnetic bodies 18 disposed between the opposing surfaces of the magnetic pole bodies 14A and 14B, it is not necessary that all the rod-shaped bodies 20 have the same shape, but different shapes. These rod-shaped bodies 20 can be used in combination. Similarly, it is not necessary for all the rod-like bodies 20 to have the same diameter, and the rod-like bodies 20 having different diameters can be used in combination.

  3A to 3D show another embodiment of the magnetic body 18 disposed between the opposing surfaces of the pair of magnetic pole bodies 14A and 14B. That is, in the present embodiment, each of the pair of magnetic pole bodies 14A and 14B is configured in a disk shape (see FIGS. 3A and 3D), and between the opposing surfaces of these magnetic pole bodies 14A and 14B, A plurality of rod-like bodies 20 made of a magnetic material are arranged in the same manner as in the embodiment shown in FIG. 2 (see FIGS. 3A, 3B, 3C, and 3D). . Since other configurations are the same as those in the above-described embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  4A to 4D show still another embodiment of the magnetic body 18 disposed between the opposing surfaces of the pair of magnetic pole bodies 14A and 14B. That is, in the present embodiment, each of the pair of magnetic pole bodies 14A and 14B is formed in a disc shape (see FIGS. 4A and 4D), and between the opposing surfaces of these magnetic pole bodies 14A and 14B, A plurality of rod-like bodies 20 made of a magnetic material are arranged in the same manner as in the embodiment shown in FIG. 3 (see FIGS. 4A, 4B, 4C, and 4D). . In the present embodiment, a pair of magnetic pole bodies 14A and 14B made of electromagnets or permanent magnets that are opposed to each other while being biased or held in different polarities are required regularly or irregularly with respect to the facing surfaces. The magnetic pole plates 15A and 15B, which are provided symmetrically with the convex portions 17A and the concave portions 17B located adjacent to each other at the intervals, are integrally provided. That is, the configurations of the magnetic pole plates 15A and 15B are those proposed in Patent Document 4. By adopting such a configuration, the magnetic force on the magnetic material is increased, and the adsorption and removal of fine magnetic particles can be further improved. It can be achieved efficiently. Since other configurations are the same as those in the above-described embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  In each of the above-described embodiments, the basic arrangement configuration of the magnetic body 18 disposed between the opposed surfaces of the pair of magnetic pole bodies 14A and 14B has been described. As an example of a particle separation / removal apparatus, an embodiment having a convenient configuration when actually assembled will be described in detail below.

  Therefore, a configuration example of the rod-shaped body unit 22 constituting the magnetic body 18 and the holder 30 for housing the rod-shaped body unit 22, which are the main parts of the apparatus for separating and removing fine magnetic particles according to the present invention, will be described. That is, the rod-shaped body 20 as the magnetic body 18 has a relatively large amount of fine magnetic particles attached thereto, and therefore needs to be taken in and out of the passage 16 relatively frequently for cleaning. Therefore, the rod-shaped body unit 22 and the holder 30 for housing the rod-shaped body unit 22 are arranged between the opposing surfaces of the pair of magnetic pole bodies 14A and 14B that are biased or held in different polarities. This is an embodiment in the case where the structure is convenient for handling when it is installed in the fluid passage 16 to be formed stably and easily.

  FIGS. 5A to 5D show a preferred embodiment of the rod-shaped body unit 22. In the rod-like body unit 22A of this embodiment, a plurality of rod-like bodies 20a and 20b made of a magnetic material are arranged in parallel between a pair of opposing support plates 23A and 23B, and both ends thereof are fixed. Consists of configuration. In this case, the plurality of rod-shaped bodies 20a and 20b are configured to be coupled and fixed to one of the support plates 23A and 23B that alternately face one end in the vertical direction. That is, one end of the rod-shaped body 20a is coupled and fixed to the one support plate 23A, and one end of the rod-shaped body 20b is coupled and fixed to the other support plate 23B. The one support plate 23A is provided with an insertion hole for fixing the other end of the rod-shaped body 20b, and the other support plate 23B is fixed with the other end of the rod-shaped body 20a. Insertion holes are provided respectively. Therefore, the rod-shaped body unit 22A of the present embodiment can be assembled by causing the pair of support plates 23A and 23B thus configured to face each other so as to intersect the rod-shaped bodies 20a and 20b.

  FIGS. 6A to 6D show a preferred embodiment of the holder 30 that houses the rod-shaped body unit 22. The holder 30 of the present embodiment includes an upper flange 32A and a lower flange 32B at the upper end and the lower end, respectively, and a rectangular passage portion forming opening 34 that opens in the vertical direction and forms a fluid inlet and outlet. Further, the upper flange 32A is provided with a pair of transport handles 33 at both ends in the longitudinal direction. With respect to the holder 30 configured in this way, the rod-like body unit 22 of the above-described or later-described embodiments can be properly inserted and arranged through the passage portion forming opening 34 provided on the upper flange 32A side. Therefore, the holder 30 of the present embodiment is configured so that the opposing surfaces of the pair of magnetic pole bodies 14A and 14B described above are disposed on both side surfaces in the longitudinal direction of the passage portion forming body 36 via the upper flange 32A and the lower flange 32B, respectively. The fluid guide passage 16 containing the fine magnetic particles can be configured by inserting and arranging so as to be in close contact with each other.

  FIGS. 7A to 7D show another embodiment of the rod-shaped body unit 22. The rod-like body unit 22B of the present embodiment has a plurality of rod-like bodies 20a and 20b made of a magnetic material aligned and arranged in parallel by superimposing a pair of opposing support plates 24A and 24B, and one end of each of the rod-like body units 22B is arranged. It consists of a fixed configuration. In this case, the plurality of rod-like bodies 20a and 20b are configured such that their one ends are coupled and fixed to the support plates 24A and 24B, respectively, symmetrically in the vertical direction. That is, one end of the rod-shaped body 20a is coupled and fixed to the one support plate 24A, and one end of the rod-shaped body 20b is coupled and fixed to the other support plate 24B. Then, the pair of support plates 24A and 24B configured in this manner are overlapped so that the other ends of the rod-shaped bodies 20a and 20b are free ends, thereby assembling the rod-shaped body unit 22B of the present embodiment. be able to. Reference numeral 25 denotes a coupling member for firmly fixing the superposed support plates 24A and 24B. In this embodiment, the lengths of the rod-like bodies 20a and 20b can be halved compared to the above-described embodiment, so that there is an advantage that the support load on the support plates 24A and 24B can be reduced.

  FIGS. 8A to 8D show still another embodiment of the rod-shaped body unit 22. The rod-shaped body unit 22C of the present embodiment arranges a plurality of rod-shaped bodies 20a, 20b made of magnetic material in parallel by overlapping a pair of opposing support plates 26A, 26B, and the central portion thereof is arranged. It consists of a fixed configuration. In this case, the plurality of rod-like bodies 20a and 20b are configured to be coupled and fixed to one of the support plates 26A and 26B facing each other alternately in the vertical direction. That is, the central portion of the rod-shaped body 20a is coupled and fixed to the one support plate 26A, and the central portion of the rod-shaped body 20b is coupled and fixed to the other support plate 26B. The one support plate 26A is provided with an insertion hole for inserting the rod-shaped body 20b, and the other support plate 26B is provided with an insertion hole for inserting the rod-shaped body 20a. Provided. Therefore, the rod-shaped body unit 22C of the present embodiment can be assembled by inserting the pair of support plates 26A, 26B in this way and inserting the rod-shaped bodies 20a, 20b into each other and overlapping them. Therefore, in the present embodiment, a connecting member for fixing the superposed support plates 24A and 24B is not particularly required.

  FIGS. 9A to 9G are explanatory views sequentially showing the assembled state of the rod-like body unit 22A shown in FIG. 5 and the holder 30 shown in FIG. In addition, about the assembly of rod-shaped body unit 22A, since the same component as the Example shown to (a)-(d) of FIG. 5 was attached | subjected the same referential mark, please refer to those description collectively. .

  FIGS. 10A to 10H are explanatory views sequentially showing the assembled state of the rod-like body unit 22C shown in FIG. 8 and the holder 30 shown in FIG. In addition, about the assembly of rod-shaped body unit 22C, since the same component as the Example shown to (a)-(d) of FIG. 8 was attached | subjected, please refer those descriptions collectively. .

  FIG. 11 shows a principle configuration as a second embodiment of the apparatus for separating and removing fine magnetic particles according to the present invention. In FIG. 11, the same components as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 11, the opposing surfaces of the pair of magnetic pole bodies 14A and 14B biased or held in different polarities are spaced apart from each other at a required interval, and fine magnetic particles are included between the opposing surfaces. A passage 16 for allowing the fluid to flow is formed. In the passage 16 formed in this manner, a magnetic body 18 for adsorbing and separating fine magnetic particles is disposed so as to be regularly or irregularly spaced apart from each other. However, in this embodiment, the heating device 40 for heating the fluid flowing through the passage 16 through which the fluid containing the fine magnetic particles flows is provided. .

  In the separation / removal device for fine magnetic particles provided with the heating device 40 in the present embodiment having the above-described configuration, the fine magnetic particles are arranged so as to be regularly or irregularly spaced from each other in the passage 16. For the magnetic body 18 for adsorbing and separating magnetic particles, all the configurations of the embodiments shown in FIGS. 2 to 10 described above can be employed.

  In the present embodiment, an electric heater can be used as the heating device 40. A high-frequency heating device using a high-frequency induction heating coil can also be applied. In this case, the inner surface of the passage 16 provided with the heating device 40 is formed using a material that can smoothly flow the heated fluid and has excellent magnetic permeability. In addition, a heat insulating material having magnetic permeability is appropriately provided between the opposing surfaces of the magnetic pole bodies 14A and 14B provided with the heating device 40 so as to insulate the magnetic pole bodies 14A and 14B. Therefore, the apparatus for separating and removing fine magnetic particles according to the present embodiment configured as described above is configured to effectively achieve the separation and removal process of fine magnetic particles even when the heating device 40 is not operated.

  Next, an example of separation / removal processing of fine magnetic particles using the fine magnetic particle separation / removal apparatus provided with the heating device 40 in the present embodiment will be described.

Separation and removal processing example 1 :
As a target for separation and removal of the fine magnetic particles, a sample in which Ni powder having a Curie temperature of about 358 ° C. and Fe powder having a Curie temperature of about 771 ° C. are mixed is used. In this case, the temperature of the heating device 40 is set to 400 to 450 ° C., and the magnetic body 18 for adsorbing and separating the magnetic particles provided in the passage 16 through which the sample flows is a magnetic body having a Curie temperature of 450 ° C. or higher. (For example, Fe). When the sample is allowed to flow through the passage 16 by the apparatus for separating and removing fine magnetic particles according to the present invention configured as described above, the Ni powder becomes a paramagnetic material, but the Fe powder is a ferromagnetic material. Therefore, the Ni powder passed through the magnetic body 18 and was collected in a required recovery container, and the Fe powder could be adsorbed and separated on the magnetic body 18.
In addition, when stainless steel powder (in a state in which stress is applied to SUS304 and changes its composition to become magnetized) is used instead of Fe powder, this stainless steel powder is adsorbed and separated on the magnetic body 18. I was able to.

Separation and removal processing example 2 :
As a target for separating and removing fine magnetic particles, a sample is used in which Fe powder having a Curie temperature of about 771 ° C. and Co powder having a Curie temperature of about 1117 ° C. are mixed. In this case, the temperature of the heating device 40 is set to 800 to 850 ° C., and the magnetic body 18 for adsorbing and separating the magnetic particles provided in the passage 16 through which the sample flows is a magnetic body having a Curie temperature of 1117 ° C. or higher. (For example, Co). When the sample is allowed to flow through the passage 16 by the apparatus for separating and removing fine magnetic particles according to the present invention configured as described above, the Fe powder becomes a paramagnetic material, but the Co powder is a ferromagnetic material. As a result, the Fe powder passed through the magnetic body 18 and was collected in a required collection container, and the Co powder could be adsorbed and separated on the magnetic body 18.

Separation and removal processing example 3 :
As an object of separation and removal of fine magnetic particles, chocolate mixed with stainless steel powder (in a state in which stress is applied to SUS304 to change its composition and become magnetic) is used. In this case, the melting temperature of chocolate is non-magnetic at about 37 ° C., and the stainless steel powder is magnetic at 38 ° C. Therefore, the magnetic body 18 for setting the temperature to 37 to 38 ° C. by the heating device 40 and adsorbing and separating the magnetic particles provided in the passage 16 through which the chocolate flows is a magnetic body having a Curie temperature of 40 ° C. or more ( For example, Fe). When the chocolate is allowed to flow through the passage 16 by the apparatus for separating and removing fine magnetic particles according to the present invention configured as described above, the chocolate is melted and collected in a required recovery container, and the stainless powder is the magnetic powder. The body 18 could be separated by adsorption and separation.

Separation and removal processing example 4 :
As an object of separation and removal of the fine magnetic particles, an epoxy resin mixed with stainless steel powder (in a state in which stress is applied to SUS304 to change its composition and become magnetic) is used. In this case, the epoxy resin can be heated to 60 ° C. and has a property that the viscosity decreases as the temperature rises, is non-magnetic at about 50 ° C., and the stainless steel powder is a magnetic substance at 50 ° C. Therefore, the magnetic body 18 for setting the temperature to 50 ° C. by the heating device 40 and adsorbing and separating the magnetic particles provided in the passage 16 through which the epoxy resin flows is a magnetic body having a Curie temperature of 50 ° C. or more (for example, , Fe). When the epoxy resin is caused to flow through the passage 16 by the apparatus for separating and removing fine magnetic particles according to the present invention configured as described above, the epoxy resin is melted and recovered in a required recovery container, The magnetic substance 18 could be separated by adsorption and separation. In this case, at room temperature (25 ° C.), the stainless steel powder was 50% adsorption / separation removed, but according to the temperature setting of 60 ° C., 95% adsorption / separation removal was achieved. .

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments. For example, the rod-shaped body constituting the magnetic body is formed of the magnetic material itself. In addition to powders, granules, spheres, cubes, etc. made of magnetic material, the above-described various rod-shaped bodies can be used as well as other magnetic pole body shapes and rod shapes. Many design changes can be made to the arrangement and combination of the body and the like without departing from the spirit of the present invention.

It is a schematic explanatory drawing which shows the principle structure as 1st Embodiment of the separation / removal apparatus of the fine magnetic particle which concerns on this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a main part configuration of the apparatus for separating and removing fine magnetic particles according to the present invention, wherein (a) is a schematic perspective view, (b) is a plan view, (c) is a front view, ) Is a side view. FIG. 2 shows another embodiment of the main configuration of the apparatus for separating and removing fine magnetic particles according to the present invention, wherein (a) is a schematic perspective view, (b) is a plan view, (c) is a front view, d) is a side view. FIG. 5 shows still another embodiment of the main configuration of the apparatus for separating and removing fine magnetic particles according to the present invention, wherein (a) is a schematic perspective view, (b) is a plan view, (c) is a front view, (D) is a side view. 1 shows an example of the structure of a rod-shaped body unit as a magnetic body used in the apparatus for separating and removing fine magnetic particles according to the present invention, wherein (a) is a schematic perspective view, (b) is a plan view, and (c) is a plan view. A front view and (d) are side views. BRIEF DESCRIPTION OF THE DRAWINGS It shows one Example of the holder which accommodates the rod-shaped body unit as a magnetic body used for the isolation | separation removal apparatus of the fine magnetic particle which concerns on this invention, Comprising: (a) is a schematic perspective view, (b) is a front view. , (C) is a plan view, and (d) is a side view. 2 shows another configuration example of a rod-shaped body unit as a magnetic body used in the apparatus for separating and removing fine magnetic particles according to the present invention, wherein (a) is a schematic perspective view, (b) is a plan view, (c) ) Is a front view, and (d) is a side view. FIG. 5 shows still another example of the structure of a rod-shaped body unit as a magnetic body used in the apparatus for separating and removing fine magnetic particles according to the present invention, wherein (a) is a schematic perspective view, (b) is a plan view, c) is a front view, and (d) is a side view. (A)-(g) is explanatory drawing which shows in order the state from the assembly of the rod-shaped body unit as a magnetic body shown in FIG. 5 to the holder shown in FIG. (A)-(h) is explanatory drawing which shows sequentially the state from the assembly of the rod-shaped body unit as a magnetic body shown in FIG. 8 to the assembly shown in FIG. It is a schematic explanatory drawing which shows the principle structure as 2nd Embodiment of the separation / removal apparatus of the fine magnetic particle which concerns on this invention.

Explanation of symbols

10 Yoke 12A, 12B Electromagnetic coils 14A, 14B Magnetic pole body (permanent magnet)
15A, 15B Magnetic pole plate 16 Passage 17A Convex part 17B Concave part 18 Magnetic body 20 Rod-like body 20a, 20b Rod-like body 22 Rod-like body unit 22A, 22B, 22C Rod-like body unit 23A, 23B Support plate 24A, 24B Support plate 25 Connecting member 26A, 26B Support plate 30 Holder 32A Upper flange 32B Lower flange 33 Carrying handle 34 Passage forming opening 36 Passage forming main body 40 Heating device

Claims (9)

  A pair of magnetic pole bodies made of electromagnets or permanent magnets are arranged opposite to each other with biasing or holding at different polarities, and a passage through which a fluid containing fine magnetic particles flows is formed between the opposed surfaces of the pair of magnetic pole bodies. In addition, the apparatus for separating and removing fine magnetic particles is characterized in that a magnetic material for adsorbing fine magnetic particles positioned regularly or irregularly at regular intervals in the passage is disposed.   A pair of magnetic pole bodies made of electromagnets or permanent magnets are arranged opposite to each other with biasing or holding at different polarities, and a passage through which a fluid containing fine magnetic particles flows is formed between the opposed surfaces of the pair of magnetic pole bodies. In addition, a heating device for heating the fluid flowing through the inner surface of the passage is disposed, and fine magnetic particles located regularly or irregularly spaced in the passage are adsorbed in the passage. An apparatus for separating and removing fine magnetic particles, characterized in that a magnetic material is disposed.   The magnetic body disposed between the opposed surfaces of the pair of magnetic pole bodies is a rod-shaped body made of a magnetic material, and a plurality of the rod-shaped bodies are provided at a predetermined angle with respect to the opposed surface side of the magnetic pole body. 3. The apparatus for separating and removing fine magnetic particles according to claim 1 or 2.   4. The separation and removal of fine magnetic particles according to claim 3, wherein the rod-shaped body made of a magnetic material disposed between the opposing surfaces of the pair of magnetic pole bodies is composed of a cylinder, a prism, a cone, a pyramid, a flat plate, or the like. apparatus.   5. The plurality of rod-shaped bodies are respectively arranged in a direction intersecting with a fluid containing fine magnetic particles flowing down a passage formed between opposing surfaces of a magnetic pole body. A device for separating and removing fine magnetic particles.   The plurality of rod-shaped bodies are arranged in a straight line between the opposing surfaces of the magnetic pole bodies, and are set so that the separation distances of all the rod-shaped bodies are equal to each other. The apparatus for separating and removing fine magnetic particles as described.   The rod-shaped body made of a magnetic material disposed between the opposing surfaces of the pair of magnetic pole bodies constitutes a rod-shaped body unit by holding one end, both ends, or an intermediate portion thereof with a support plate, and the rod-shaped body unit is connected to the pair of magnetic pole bodies. It is configured to be accommodated in holders each provided with a fluid inlet and outlet in the flow direction of the fluid including fine magnetic particles, which can be inserted and removed between opposing surfaces of the magnetic pole body. Item 7. The apparatus for separating and removing fine magnetic particles according to any one of Items 3 to 6.   8. The apparatus for separating and removing fine magnetic particles according to claim 7, wherein the holder for storing the rod-shaped body is configured to surround an inner peripheral surface between opposed surfaces of the pair of magnetic pole bodies with a nonmagnetic material. .   A pair of magnetic pole bodies composed of electromagnets or permanent magnets, which are biased or held in different polarities and arranged opposite to each other, are convexly located adjacent to the facing surfaces at regular intervals or at regular intervals. The apparatus for separating and removing fine magnetic particles according to claim 1, wherein the portion and the concave portion are provided symmetrically.