WO2016002256A1 - Eddy current selection device and eddy current selection method - Google Patents

Eddy current selection device and eddy current selection method Download PDF

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Publication number
WO2016002256A1
WO2016002256A1 PCT/JP2015/056456 JP2015056456W WO2016002256A1 WO 2016002256 A1 WO2016002256 A1 WO 2016002256A1 JP 2015056456 W JP2015056456 W JP 2015056456W WO 2016002256 A1 WO2016002256 A1 WO 2016002256A1
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pallet
magnetic field
eddy current
step
object
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PCT/JP2015/056456
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French (fr)
Japanese (ja)
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朋洋 筒井
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三菱電機株式会社
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00Magnetic separation
    • B03C1/02Magnetic separation acting directly on the substance being separated
    • B03C1/23Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00Magnetic separation
    • B03C1/02Magnetic separation acting directly on the substance being separated
    • B03C1/025High gradient magnetic separators
    • B03C1/031Component parts; Auxiliary operations
    • B03C1/033Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0332Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00Magnetic separation
    • B03C1/02Magnetic separation acting directly on the substance being separated
    • B03C1/23Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
    • B03C1/24Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields
    • B03C1/247Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields obtained by a rotating magnetic drum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34Sorting according to other particular properties
    • B07C5/344Sorting according to other particular properties according to electric or electromagnetic properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00Details of magnetic or electrostatic separation
    • B03C2201/20Magnetic separation whereby the particles to be separated are in solid form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00Details of magnetic or electrostatic separation
    • B03C2201/24Details of magnetic or electrostatic separation for measuring or calculating parameters, efficiency, etc.
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00Details of magnetic or electrostatic separation
    • B03C2201/32Checking the quality of the result or the well-functioning of the device

Abstract

An eddy current selection device comprising: a magnetic field rotating disk (1) having the polarity thereof alternately inverted and having a plurality of permanent magnets arranged in the circumferential direction; a pallet (2) arranged separated by a gap from the magnetic field rotating disk; a drive unit (14) having a rotating shaft attached to the magnetic field rotating disk; a supply unit (3) that holds objects for selection and supplies a prescribed amount of the objects for selection to the pallet; a discharge unit (4) having two collection containers and, when changed from a closed state to an open state, collecting, to these collection containers, objects for selection that have been supplied from the supply unit to the pallet; and a control unit (30) that controls the magnetic field rotating disk (1); the drive unit (14), the supply unit (3), and the discharge unit (4). The eddy current selection device executes: a first step in which the prescribed amount of objects for selection are supplied from the supply unit to the pallet; a second step in which, after a set time has passed after the first step has been completed, changes the discharge unit from the closed state to the open state; and a third step in which, after the second step has been completed, returns the discharge unit to the closed state. Once the third step has been completed, the first to third steps are executed again.

Description

Eddy current sorting device and an eddy current screening methods

This invention relates to a sorting apparatus and sorting method, and more particularly, it relates to an eddy current sorting device for sorting a conductive material by using a rotating magnetic field.

The selection of conductive materials have been proposed already a number of ways (e.g., see Patent Documents 1-5). Screening method using eddy current can be cited as one of them. The eddy current sorting device, and a permanent magnet system for high-speed rotation of the magnet, AC electromagnets method of applying sequentially alternating current to the coil are known. Any method well, an alternating magnetic field is applied to the conductive material, inside to generate eddy currents in the conductive material, and screened conductors by the interaction between current and magnetic field. Propulsion force based on electromagnetic force is generated in the conductor.

Permanent magnet system, and distance difference sorting method by rotating cylindrical magnets, rotating disc magnet system arranged rotating disc-shaped magnet at the bottom of the table, be mentioned as a typical example. Distance difference sorting method moves in the vicinity of the rotating cylindrical magnet be sorted mixture (or be sorted object) by vibration table or a conveyor or the like, and generates an eddy current due to the alternating magnetic field to the conductive material. Conductive material is subjected to thrust caused by eddy currents, since than a non-conductive material to obtain a large distance, is selected (e.g., see Patent Document 6).

On the other hand, the rotary disk magnet system moves the object to be sorted mixture on the table, to the conductive material in between, by a rotating disc-shaped magnet disposed on the lower table, a driving force due to eddy currents in the moving direction different orientations give. Magnet is a plurality secured to the rotary disk-shaped magnet. In this method, whereas the non-conductive material eddy current is not generated to move the table edge in a straight line, the conductive material is moved laterally by a propelling force due to eddy currents, opposite end of the table to move to. Be sorted mixture is separated while sliding or rolling Itajo are sorted by receiving separately downstream of the table (e.g., see Patent Document 7).

JP-A-50-140953 JP Japanese Utility Model Publication No. 58-48343 JP-A-59-32958 JP JP-7-163903 discloses JP-T 2000-510764 JP Patent No. 3366620 Publication JP-1-111459 discloses

Propulsion force generated in the conductive material of the object to be sorted mixture, the characteristics of the eddy current sorting, greater the size of the conductive material becomes smaller, smaller. Therefore, driving force generated in the conductive material of small dimensions, such as thin copper wire of about 0.2 ~ 0.6 mm is very small. Further, driving force by the eddy currents received a significant effect on the distance of the conductive material and the magnet surface, propulsion only that distance away several mm is greatly reduced.

In distance difference sorting method, the time distance of the magnets and the conductive material approaches are limited to a fraction of the time of flight at the start to approach the rotating cylindrical magnets. Thus, although enough possible in sorting short propulsion major driving force large dimensions of the conductive material obtained, in a relatively small driving force only conductivity of the resulting non-small size materials, the flight distance becomes small sorting It becomes difficult. Also in the conductive material of the same material, different movements during propulsion or flying start by shape and size, since the variations in the distance, the conductive material are mixed in a region of non-conductive material, high not suitable for purity selection.

In rotating disc magnet system, any attempt selection of low conductive material dimensions, since the propulsion obtained force is small, small amount of movement in the lateral, the conductive material and a non-conductive material are mixed, It can not be sorted to a high purity. In rotating disc magnet system, to increase the amount of movement of the propulsion small conductive material, in order to improve the sorting purity, it is considered effective to take a long time to provide propulsion to the conductive material. However, if the sorting while feeding the mixed material in the radial direction of the rotating disk-shaped magnet, if attempts to give a propulsive force for a long time, or to increase the radius of the rotating disk-shaped magnet, it is necessary to reduce the feed rate.

Device dimensions by increasing the radius of the rotating disk-shaped magnet is limited increases and device location, throughput is sacrificed if caused to decrease the feed speed. Further, since the upper table conductive material and a non-conductive material is selected while moving together, non-conductive material in the process of sorting is moved to the conductive material side, by mixing, sorting purity decreases . To avoid this, when taking the method for tilting the table to move the material laterally, leading to impeding the movement to the side of the conductive material in the opposite.

From the above, it is difficult to select a small conductive material dimensions in high purity in an eddy current sorting device such distance difference sorting method and rotating disk magnet system. The present invention has been made to solve the problems of the sorting techniques, it is an object to perform the selection of the conductive material of small dimensions, such as crushing copper wire with high purity.

Eddy current sorting device of the present invention, the magnetic field rotational disc by inverting the polarity alternately are arranged a plurality of permanent magnets in the circumferential direction, and the pallet is spaced apart from the magnetic field rotating disk, rotating has a shaft magnetic rotating disk drive unit attached to and holding the sorted object, a supply unit for supplying a predetermined amount of the object to be sorted object to the pallet, two of the collection container, closed provided from a to be sorted object supplied to the pallet from the supply unit in the open state discharge portion for collecting this collection container, the magnetic field rotating disk, drive unit, and a control unit for controlling the supply and discharge unit a first step of supplying a prescribed amount of the sorted object to the pallet from the supply unit, after completion of the first step, a predetermined time has elapsed, a second step of the discharge unit from the closed state to the open state, the after 2 step is completed, the third step of returning the discharge portion in the closed state, run, When 3 step is completed, and executes a from the first step to the third step again.

Or eddy current sorting device according to the invention, such performing configuration and operation as is able to perform the selection of the conductive material of small dimensions, such as crushing copper wire with high purity.

Is a sectional view showing an eddy-current sorting device according to a first embodiment of the present invention. Is a perspective view showing an eddy-current sorting device according to a first embodiment of the present invention. According to the first embodiment of the present invention is a top view showing a magnetic field rotating disc. It is a diagram showing a sorting operation according to the first embodiment of the present invention. Is a perspective view showing an eddy-current sorting device according to a second embodiment of the present invention. Is a diagram illustrating a conductive material undergoes force according to a second embodiment of the present invention Is a perspective view showing an eddy-current sorting device according to a third embodiment of the present invention. Is a diagram showing an eddy current sorting device according to a fourth embodiment of the present invention. Is a diagram showing an eddy current sorting device according to a fifth embodiment of the present invention. Is a diagram showing an eddy current sorting device according to a sixth embodiment of the present invention. Is a diagram showing an eddy current sorting device according to a seventh embodiment of the present invention. Is a diagram showing an eddy current sorting apparatus according to an eighth embodiment of the present invention. Is a diagram showing an eddy current sorting device according to a ninth embodiment of the present invention. Is a top view showing an eddy-current sorting device according to a tenth embodiment of the present invention. Is a side view showing the discharge portion according to a tenth embodiment of the present invention. Is a side view showing an eddy-current sorting device according to the eleventh embodiment of the present invention. Is a sectional view showing an eddy-current sorting device according to a twelfth embodiment of the present invention. Pallet is a top view showing that it is oscillating. It is a diagram showing a state where the sorted objects are separated by a rocking of the pallet. It is a cross-sectional view showing the relationship between the pallet and the rotating brush. It is a cross-sectional view showing the relationship between the palette and the brush. It is a cross-sectional view showing the relationship between the palette and the air nozzle. Is a partial sectional view showing an eddy-current sorting device according to the embodiment 13 of the present invention. Is a perspective view showing an eddy-current sorting device according to a fourteenth embodiment of the present invention.

Eddy current sorting apparatus according to the embodiment of the present invention will be described below with reference to FIG. In the drawings, the same or similar components are denoted by the same reference numerals and the corresponding size and scale of each component is independent. For example between the cross-sectional view of a partial modification of the configuration, when illustrating the same components that have not changed, there is a case where the size or scale of the same components are different. The configuration of the eddy current sorting device is actually further comprises a plurality of members, for simplicity, describes only the portions necessary for explanation are omitted for the other parts.

The first embodiment.
Figure 1 is a diagram showing a configuration of an eddy current sorting device according to a first embodiment of the present invention. Eddy current sorting device 100, a magnetic field rotating disk 1, the pallet 2, the supply unit 3, the discharge unit 4, the driving unit 14, detector 25, and a control unit 30. Driver 14, the rotary shaft 8, a bearing 9, the drive motor 10, be composed of a coupling 11, and is fixed to the magnetic field rotation disk 1. Be sorted object, the holding container 3b of the supply unit 3, temporarily, after being held and storage, it is introduced to the pallet 2 through the supply lanes 3a. Thereafter, the sorted mixture is sorted into the conductive material and a non-conductive material in pallet 2, is stored are sorted to the discharge unit 4. Disc 6 of annular shape having a concave portion. The concave portion of the disc 6 is fixed yoke plate 7 of the annular permanent magnet 5 (neodymium magnet) is fixed thereon. Discharge unit 4, the recovery container 4a, and a like discharge chute 4b and close valve 4c.

Magnetic field rotating disk 1 is mounted on the rotation shaft 8 of the drive unit 14. Rotary shaft 8 is being supported by a bearing 9, and is connected to a drive motor 10 coupling 11 or the timing belt or the like. Rotation of the drive motor 10 is transmitted to the disc 6 via a coupling 11. Pallet 2 is a thin plate-like bottom plate 12 is constituted by the outer edge portion 13 surrounding the bottom plate 12. Pallet 2, on the magnetic field rotating disk 1 is arranged through a small distance of the surface and about 1 ~ 2 mm of the permanent magnet 5. Pallet 2 and the collection container 4a is connected with the discharge chute 4b. Between the pallet 2 and the discharge chute 4b so that the can be set is installed close valve 4c is, a use state of the collection container 4a of the discharge part 4 to the open and closed states. The control unit 30 analyzes the image detected by the detector 25, determines the separation degree of the object to be sorted object. The control unit 30 gives instructions and pallet 2 and the supply unit 3 and the discharge portion 4 to the drive unit 14 further based on the determination result, it controls the operation.

It shows a perspective view of an eddy current sorting device 100 in FIG. 2. Magnetic field rotating disk 1 is coupled to the drive motor of the drive unit 14, when viewed from the top, it rotates clockwise. Supply unit 3 is introduced to intermittently possible overlap not as thin linearly be sorted object to the end of the pallet 2. Discharge unit 4 has a function of recovering without leakage of material on the pallet. Specifically, functions to tilt the pallet 2, the ability to discharge to vibrate the pallet 2, although such function begins scraping the internal pallet materials include method does not matter. Be sorted objects are stored in the supply unit 3 is supplied to the pallet 2 through the supply lanes 3a. If the entered be sorted object over time, it is separated into the conductive material 22 and a non-conductive material 23 in the pallet 2. Fractionation conditions of the sorted object being monitored with the detector 25. When the control unit 30 is determined to be a good fractionation of the object to be sorted object from the detected image of the detector 25, or a material is supplied, a certain sorting time set in advance elapses, the discharge part 4 close valve 4c is open. Conductive material 22 and a non-conductive material 23 passes through the discharge chute 4b, is stored in a state of being fractionated into collection container 4a of the discharge part 4. Collecting container 4a is installed two to divide the conductive material and a non-conductive material.

Figure 3 shows the structure of a magnetic field rotating disk 1. Permanent magnets 5 are disposed in a recess of the aluminum alloy steel discs 6 radially so that magnetic poles alternating in the circumferential direction. Yoke plate 7 of the annular is fixed to the concave portion of the disc 6. Member approaching the vicinity magnet in the pallet is formed of a material of a non-conductive and non-magnetic. Especially thin plate of the bottom plate 12 of the pallet 2 is to use a high rigidity, such as FRP (Fiber Reinforced Plastics). The center of the magnetic field rotating disk 1, the rotation shaft 8 have been inserted, and is connected to the driving unit 14. Control unit 30 gives an instruction to rotate in the drive unit 14 when required. Magnetic field rotating disk 1 in conjunction with rotation of the drive motor 10 is rotated. Conductive material 22 is in gray, non-conductive material 23 to be represented by white.

The present invention apparatus has a basic configuration as described above. Sorting operation by the apparatus as shown in FIG. 4 (FIGS. 4A ~ Figure 4D), is performed as follows. First, an object to be sorted object 24 is a mixture of conductive material and a non-conductive material charged into the holding container 3b of the supply unit 3 (see FIG. 4A). Conductive material specifically, such crushed copper and aluminum pieces than a diameter 0.2 mm, a non-ferrous metal outer dimensions is crushed and divided into several mm ~ number 10 mm, non-conductive material plastic piece, rubber crushed, powder, sand and the like refers. Opening or lowering the supply lanes 3a, in a state arranged in a straight line in the radial direction of the magnetic field rotating disc 1 on one side (the input side 2a) of the pallet 2 from the sorted object 24 holding vessel 3b of the supply section 3 determined amount, are charged.

It turned ends and closed or increase the supply lane 3a (see FIG. 4B). The thrown-in be sorted object 24 from the magnetic field rotating disk 1 rotating at the bottom of the pallet 2, alternating magnetic field poles are switched at a high speed is applied. Conductive material of the object to be sorted object in the by alternating magnetic field, eddy current is generated inside the electromagnetic force is generated between the magnetic field rotational disc 1. This acts as the driving force, the conductive material is moved to the opposite side of the pallet 2, which is the movement direction of the permanent magnet 5 (anti-up side 2b). Non-conductive material, the internal eddy current is not generated, thrust is not generated. In this state, the control unit 30 determines that sorting of the object to be sorted object is insufficient.

Small dimensions, small even obtained only propulsion conductive material, the interior of taking the time and the pallet 2 moves little by little, to move to the opposite side of the pallet 2 (counter-turned side 2b) (see FIG. 4C) . On the other hand, non-conductive material, because the eddy current is not generated inside, do not move from the input location. Also to the conductive material thrust can not be obtained largely dimensions small, the time sufficient distance difference which is not mixed with non-conductive material occurs, to apply a driving force. Fractionated until the control unit 30 to determine the fractional degree of good proceeds. Accordingly, the conductive material and a non-conductive material separates into a high purity in the pallet 2 with the lapse of time. In this state, the control unit 30 determines separation of the object to be sorted object as good.

Next, the control unit 30, by opening the on-off valve 4c, the collecting container 4a of the discharge part 4 to the open state (see FIG. 4D). Pallet 2 and the collection container 4a is in the open state is communicated by the discharge chute 4b. Isolated conductive material and a non-conductive material through a discharge chute 4b, is stored in a state of being fractionated into collection container 4a. From the last collecting container 4a, separated conductive material and a non-conductive material by collecting each one cycle of the sorting is completed. Thereafter, returning to FIG. 4A, is again introduced new be sorted mixture from the supply unit 3 to the pallet 2, starts the sorting of the next cycle.

As described above, by changing the time until the discharge from the charged material to the pallet, optionally it is possible to adjust the time for applying the driving force to the conductive material. Between the conductive material 22 and the permanent magnet 5 is only one of the bottom plate 12 of the pallet 2, that distance is constant, even where the material in the pallet is moved, the maximum thrust in existing apparatus it is possible to give a propulsive force of the same degree. Therefore, even for conductive material thrust can not be obtained largely dimensions small, the time sufficient distance difference which is not mixed with non-conductive material occurs, it is possible to apply a thrust.

This embodiment, instead of sorting while feeding the object to be sorted object in the radial direction of the magnetic field rotating disc 1, a method of moving a batch, only the conductive material. To be selected while moving only the conductive material, non-conductive material in the process of sorting is moved to the conductive material side, benefits exist such less be mixed. For these reasons, it is possible to obtain the effect that it is possible to electrically conductive material of small dimensions a high-purity sorting and non-conductive material such as a thin copper wire of a diameter of about 0.2 ~ 0.6 mm. For throughput improvement, it is not necessary to increase the magnitude of the magnetic field rotating disc 1, there are also a merit can be dealt with by increasing the number of pallets 2 to be combined with one of the magnetic field rotational disc 1 as necessary.

The second embodiment.
An eddy current sorting apparatus according to a second embodiment will be described with reference to FIGS. 5 and 6. Eddy current sorting device 100, as shown in FIG. 5, is inclined rotating shaft 8, magnetic field rotational disc 1 and the pallet 2 are tilted together in the same direction. Top and pallet 2 in the horizontal plane of the magnetic field rotating disk 1 (bottom plate 12) is inclined in a direction in which thrust is exerted. If the pallet 2 is placed horizontally, the attempts to sliding movement of the bottom plate on the pallet 2 conductive material by a propelling force, it is necessary to move by overcoming the frictional force.

According to the configuration according to the second embodiment, the inclination of the pallet, gravity force component acts in the direction of thrust acts on the sorted object. As a result, conductive material friction decreases apparently be overcome as shown in FIG. 6, it can also be sorted small material dimensions more occur only small thrust. If the friction coefficient in comparison with the conductive material towards the non-conductive material in this configuration is large, it can also be selected in conjunction difference in frictional force, higher sorting capacity can be expected.

Embodiment 3.
An eddy current sorting apparatus according to the third embodiment will be described with reference to FIG. Eddy current sorting device 100 is arranged to be inclined in a direction opposite to thrust the horizontal plane of the rotary shaft 8 and the pallet 2 of the magnetic field rotational disc 1 acts as shown in FIG. At this time, the non-conductive material by the inclination of the pallet 2, is set to an inclination angle slipping off. In the figure, the magnetic field rotating disk 1 is rotated in the counterclockwise direction. According to this configuration, performs sorting by non-conductive material with respect to moving the pallet 2 to the lower and sliding or rolling, the conductive material is held in the upper end portion of the pallet 2 by a propelling force . If the coefficient of friction compared with the conductive material towards the non-conductive material is small, it is possible to perform sorting in combination with differences in friction coefficient. Also, in the case of easily shape it is also effective rolling as compared to conductive material towards the non-conductive material.

Embodiment 4.
An eddy current sorting device according to the fourth embodiment will be described with reference to FIG. A magnetic field rotating disk 1 of the eddy current sorting device surface of the permanent magnets 5 are arranged above the pallet 2 in a direction as it appears in the lower part. Thus the direction the lower magnet side 1a of the magnetic field rotational disc 1, yoke side 1b is facing up. Usually, if provide propulsion in one magnetic field rotating disc 1, the force and the rotational force in the translational direction is generated in the driving force. According to this configuration, the orientation of the conductive material by the rotating force is going Korogaro on pallets, because the same as the translation direction of the force direction, performs sorting using the rotation force in addition to the translational direction of the force be able to. Therefore, it is particularly effective in sorting tends conductive material rolling.

Embodiment 5.
An eddy current sorting device according to the fifth embodiment will be described with reference to FIG. Here the thickness of the bottom plate increases from the middle toward the supplying side to counter the input side. For example, an eddy current sorting device 100, as shown in figure, by increasing the thickness of the bottom plate 12 of the pallet 2 near the outer edge 13 of the counter-supplying side. When a size and shape to try to sort different conductive material at the same time, variations in the driving force generated in the conductive material. When setting the apparatus in accordance with the thrust small conductive material becomes larger than necessary rate of thrust size of the conductive material of selecting simultaneously strongly it collides with the outer edge 13 of the pallet, that bounce, other it is contemplated that affect be sorted materials. According to this arrangement, when the conductive material is increased speed in the pallet 2, the driving force distance apart of the thickened area permanent magnet 5 in the conductive material of the bottom plate 12 becomes small, the outer edge do not collide strongly. Therefore, it is effective in selecting the sorted material different conductive material propulsive are mixed for reasons such as there are variations in size.

Embodiment 6.
An eddy current sorting device according to the sixth embodiment will be described with reference to FIG. Here thickness of the bottom plate is increased at a constant rate toward the supplying side to counter the input side. For example, an eddy current sorting apparatus 100 is inclined from a plane parallel to the angle of the upper surface of the magnetic field rotational disc 1 surface and the bottom plate 12 as shown in FIG. The recovery container 4a is provided three. According to this configuration, since the distance between the surface and the conductive material of the permanent magnet 5 becomes higher thrust decreases increases gradually decreases thrust as the conductive material moves through the pallet. Accordingly, the distance dimension size or electrical conductivity material having a large relative to distance traveled through the pallet is increased, which can move a material having a small size is small or electric conductivity is reduced. This is to recover the discharge portion 4 having a plurality of discharge ports, it is possible to select an object to be sorted objects in a plurality of stages depending on the magnitude of the electric conductivity and the dimensions of the material.

Embodiment 7.
An eddy current sorting apparatus according to the seventh embodiment will be described with reference to FIG. 11. Eddy current sorting device 100 is applied vibration to the pallet 2 as shown in FIG. Specifically, while the sorted material is present in the palette to apply a small vibration in the out-of-plane direction by using the ultrasonic transducer 20. Or intermittently applying a relatively large vibration by eccentric weight with the motor. According to this configuration, the former time becomes shorter be sorted object touches the pallet 2, the frictional force is reduced. Thereby, it is possible to sort more conductive material of small dimensions only come small thrust. In the latter, there is non-conductive material in front of a conductive material, when the move is a situation such as that inhibited by shifting the positional relationship between both can continue sorting.

Embodiment 8.
An eddy current sorting device according to Embodiment 8 will be described with reference to FIG. 12. Eddy current sorting device 100 is mounted a lid 21 for blocking pallet out when screened against the pallet as shown in FIG. The lid 21 is one which does not inhibit the time of the sorting object is charged from the supply unit, such as the structure that opens only when passing a material separation is complete to the discharge unit, the operation at the time of discharge during the supply of the sorted object to. According to this configuration, it never is sorted object pops out to the pallet out during sorting. Moreover, such influence of airflow caused by the rotation of the pallet bottom of the magnetic field rotating disk, it is possible to reduce the disturbance applied from the pallet outside the sorted materials.

Embodiment 9.
An eddy current sorting apparatus according to a ninth embodiment will be described with reference to FIG. 13. A magnetic field rotating disc 1 at the bottom of the pallet 2 are arranged an auxiliary magnetic field rotating disk 17 to the top of the pallet 2. Auxiliary magnetic field rotating disk 17 is disposed above the pallet toward the magnet side 1a below. In this case the top and bottom of the magnetic field rotational disc, for example, by attaching to the same rotating shaft 8, magnetic poles of the permanent magnet 5 which are opposed rotates synchronously so as to be opposite at all times up and down. That auxiliary magnetic field rotating disk 17, shares the magnetic rotatable disk 1 and the rotary shaft 8, the polarity of the opposing permanent magnets are reversed. According to this configuration, compared with the case of using a single magnetic field rotating disk, the magnetic flux density in the palette is increased, there is an advantage propulsion translational direction becomes larger.

Embodiment 10.
An eddy current sorting apparatus according to a tenth embodiment will be described with reference to FIGS. 14 and 15. Eddy current sorting apparatus 100, as in FIG. 14, a pair of magnetic field rotating disk 1, the supply unit 3, and with respect to the discharge section 4, are arranged a plurality of pallets 2. In this example, it connects the six pallets 2 through the pallet tilting axis 19 to the pallet drive ring 18, are arranged side by side annularly. Be sorted objects are fed to the pallet 2 in the loading position through the supply lane 3a from the supply unit 3. In the figure pallet reaches the direction of 5 o'clock in the on position. Pallet in the loading position overlaps the supply lanes 3a. By rotating the pallet drive ring 18 with the pallet drive motor 15, and the pallet 2 is slow circulation at the top of the magnetic field rotating disk 1. Pallet driving method, in addition to this, mounting the cam follower on the pallet, and a method of moving on a rail, it may be any method for moving a plurality of pallets.

The control unit 30 is to determine the separation of the object to be sorted objects in a plurality of pallets. When determining the separation of the object to be sorted object In any of the pallets and good, or if certain selection time has passed, indicating the open state to the discharge unit and the pallet reaches the discharge position. Pallet 2 and the discharge portion 4 overlaps the discharge position. In the figure, the right end of the pallet in the direction of 3 o'clock has reached the discharge position. Examples of the discharge unit 4 in this configuration shown in FIG. 15. Pallet 2 at the time of selection, but is kept horizontal, when discharged pallets around the pallet tilting axis 19 is inclined. When the pallet is inclined, collecting container 4a is used state to the open state, the horizontal when in the closed state. Isolated conductive material and a non-conductive material is discharged to the discharge unit 4 through the discharge chute 4b.

In this case, either rotating the pallet 2 intermittently rotates at a constant speed, it may be any of the methods for rocking together discharge chute 4b to the movement of the pallet 2. According to this configuration, by increasing the number of pallets 2 can be utilized without waste density of the magnetic flux generated from the magnet of the magnetic field rotating disk in. The supply unit 3 for the number of the pallet 2, reducing the number of discharge part 4, it is possible to increase the operating rate of the supply unit 3 and the discharge section 4. Accordingly, without increasing the magnetic field rotational disc 1, the number of supply unit 3 and the discharge section 4 by the number of pallets 2, it is possible to increase the throughput. As a result, the area occupied by the device and it is possible to reduce the increase in apparatus cost.

By adjusting the revolving speed of the pallet 2, can be sorted mixture by how ease under the influence of the eddy current, it adjusts easily sorted time. Specifically, dimensions large, at the time of selection of propulsion is relatively large electrically conductive material to increase the circulating speed, performs sorting in a short time, it is possible to increase the throughput. Conversely, small dimensions, that driving force at the time of selection of a small conductive material to lower the circulating speed, giving longer sorting time, it is possible to perform selection of high purity.

Embodiment 11.
An eddy current sorting apparatus according to an eleventh embodiment will be described with reference to FIG. 16. Eddy current sorting device 100, since the bonded plurality of magnetic field rotating disk 1 to one of the rotating shaft 8, magnetic field rotating disk 1 share the rotation axis 8. It shows an example of fixing the one rotating shaft 8 to the three magnetic field rotating disk 1 in FIG. In this configuration, while suppressing the number of drive motor 10 in one flow path divided into three at the feed section 3, by performing the same sort in each combination of the magnetic field rotating disk 1 and the pallet 2, parallel It performs a process, it is possible to increase the processing amount to 3 times.

Further, the vertical space by effectively utilizing, it is possible to increase the throughput without increasing significantly the area occupied by the device. Furthermore, in each of the magnetic field rotating disk, set to be larger a magnetic flux density applied to the workpiece from the top, by connecting in series to the next supply unit each discharge portion, stepwise in each field rotating disc it may be subjected to selection in. For example, to screen a conductive material having a large size at the top field rotating disk of the remaining small conductive material and a non-material dimensions in the second and third magnetic field rotating disk sorting in parallel it is possible to sort the flows such.

Embodiment 12.
An eddy current sorting apparatus according to Embodiment 12 will be described with reference to FIG. 17. Eddy current sorting device 100, a magnetic field rotating disk 1, the pallet 2, the supply unit 3, the discharge unit 4, the driving unit 14, swinging mechanism 26, and a control unit 30. Driver 14, the rotary shaft 8, a bearing 9, the drive motor 10, be composed of a coupling 11, and is fixed to the magnetic field rotation disk 1. Be sorted object, the holding container 3b of the supply unit 3, temporarily, after being held and storage, it is introduced to the pallet 2 through the supply lanes 3a. Thereafter, the sorted mixture is sorted into the conductive material and a non-conductive material in pallet 2, is stored are sorted to the discharge unit 4. Disc 6 of annular shape having a concave portion. The concave portion of the disc 6 is fixed yoke plate 7 of the annular permanent magnet 5 (neodymium magnet) is fixed thereon. Discharge unit 4, the recovery container 4a, and a like discharge chute 4b and the discharge mechanism 4d.

Magnetic field rotating disk 1 is mounted on the rotation shaft 8 of the drive unit 14. Rotary shaft 8 is being supported by a bearing 9, and is connected to a drive motor 10 coupling 11 or the timing belt or the like. Rotation of the drive motor 10 is transmitted to the disc 6 via a coupling 11. Rotational speed of the magnetic field rotating disc 1 the control unit 30 controls. Pallet 2 is a thin plate-like bottom plate 12 is constituted by the outer edge portion 13 surrounding the bottom plate 12. Pallet 2, on the magnetic field rotating disk 1 is arranged through a small distance of the surface and about 1 ~ 2 mm of the permanent magnet 5. Pallet 2, when sorting is being kept horizontal to the magnetic field rotating disc 1, the discharge mechanism 4d are inclined with discharging portion 4 is operating in the open state (see FIG. 15). In pallets, member approaching near the magnet is composed of non-conductive and non-magnetic material. In particular the bottom plate 12, such as alumina or FRP (Fiber Reinforced Plastics), non-conductive, to use those having a non-magnetic and high stiffness characteristics.

Magnetic field rotating disk 1 is coupled to the drive motor of the drive unit 14, when viewed from the top, it rotates clockwise. Supply unit 3 is introduced to intermittently possible overlap not as thin linearly be sorted object to the end of the pallet 2. Discharge unit 4 has a function of recovering without omission as immiscible materials separated on the palette, respectively. Be sorted objects are stored in the supply unit 3 is supplied to the pallet 2 through the supply lanes 3a. According thrown-in be sorted object over time, are separated into the conductive material 22 and a non-conductive material 23 in the pallet 2. Time from thrown into the pallet 2 to be sufficiently separated varies depending on the characteristics of the object to be sorted object to be charged.

The size of the driving force generated in the object to be sorted object by the action of the eddy current depends electrical conductivity of the object, mass, shape, etc. dimensions. By setting in advance the selection time to discharge from the input in response to the selection target object, allowing high purity separation. After the selection period has elapsed, the conductive material 22 and a non-conductive material 23 separated are respectively taken out from the pallet 2. Be sorted object, by the discharge mechanism 4d, passing through the discharge chute 4b, it is stored in a state of being fractionated into collection container 4a. Collecting container 4a is installed two to divide the conductive material and a non-conductive material.

Sorting operation by the device is performed as follows. First, the control unit 30 while rotating the magnetic field rotating disk 1 at all times, turning on the object to be sorted object 24 is a mixture of conductive material and a non-conductive material in the holding vessel 3b of the supply unit 3 (see FIG. 4A) . Conductive material specifically, such crushed copper and aluminum pieces than a diameter 0.2 mm, a non-ferrous metal outer dimensions is crushed and divided into several mm ~ number 10 mm, non-conductive material plastic piece, rubber crushed, powder, sand and the like refers. Opening or lowering the supply lanes 3a, in a state arranged in a straight line in the radial direction of the magnetic field rotating disc 1 on one side (the input side 2a) of the pallet 2 from the sorted object 24 holding vessel 3b of the supply section 3 specified amount, is turned on.

It turned ends and closed or increase the supply lane 3a (see FIG. 4B). The thrown-in be sorted object 24 from the magnetic field rotating disc 1 which rotates constantly in the bottom of the pallet 2, alternating magnetic field poles are switched at a high speed is applied. Conductive material of the object to be sorted object in the by alternating magnetic field, eddy current is generated inside the electromagnetic force is generated between the magnetic field rotational disc 1. This acts as the driving force, the conductive material is moved to the opposite side of the pallet 2, which is the movement direction of the permanent magnet 5 (anti-up side 2b). Non-conductive material, the internal eddy current is not generated, thrust is not generated.

There is non-conductive material in front of a conductive material, in situations where the mobile is inhibited, it is difficult to move the electrically conductive material. In the present embodiment, swing mechanism 26, as shown in FIG. 18, the swing to exercise while keeping parallel the magnet surface and the pallet surface pallet 2 when selected in the vicinity of the rotating magnet. According to this configuration, since the direction of the thrust received by the conductor is not constant with respect to the orientation of the pallet, the trajectory of the movement of the conductive material varies according to the oscillating motion of the pallet. By trajectory changes in a zigzag as shown in FIG. 19, is moved without being inhibited conductive material in front of the non-conductive material, it is possible to continue the screening. Oscillating motion linkage, may be either like the cam mechanism. Control unit 30 changes the angle and period of the swinging motion by the sorted object.

Small dimensions, small even obtained only propulsion conductive material, the interior of taking the time and the pallet 2 moves little by little, to move to the opposite side of the pallet 2 (counter-turned side 2b) (see FIG. 4C) . On the other hand, non-conductive material, because the eddy current is not generated inside, do not move from the input location. Also to the conductive material thrust can not be obtained largely dimensions small, the time sufficient distance difference which is not mixed with non-conductive material occurs, to apply a driving force.

By different since sufficient distance difference is generated only in time be sorted object, advance experimentally pallet 2 material was poured into grasps the time sufficient distance difference occurs, and set in the control unit 30 as a selection time to keep. The control unit 30, the material is put into the palette, when after a certain sorting time set, to change the discharge section 4 from the closed state to the open state. In this embodiment, ejection mechanism 4d is operated pallet 2 by tilting, discharged into collection container 4a to be sorted object from the pallet 2 (see FIG. 17). Pallet 2 is conductive material and a non-conductive material separated to tilt through the discharge chute 4b, is stored in a state of being fractionated into collection container 4a (see FIG. 4D). Thereafter, the discharge unit 4 changes the discharge mechanism 4d to return to the closed state to the stopped state (or normal state), to collimate the pallet 2.

The discharge mechanism 4d, (see FIG. 20) mechanism inside material out scraped by the rotating brush 31 of the pallet to drive the brush 32 by a link mechanism or a cam mechanism, out scraping the inner material of the pallet in the brush mechanism (FIG. 21 see), a mechanism for separating skip material feeding compressed air from the air nozzles 33 (see FIG. 22), and also including but not limited the method. Convex portion 2a, the discharge mechanism 4d is when the closed state (or stopped state), is provided in order to prevent the object to be sorted object is discharged into the collecting container 4a. From the above, since one cycle of the sorting is completed, when turned on again, a new object to be sorted objects from the feed section 3 to the pallet 2, selection of the next cycle begins (see FIG. 4A). By repeating this cycle, be sorted objects are stored in the supply unit are stored sequentially divided into conductive material and a non-conductive material in the collection container 4a.

As described above, by changing the time until the discharge from the charged material to the pallet, optionally it is possible to adjust the time for applying the driving force to the conductive material. Between the conductive material 22 and the permanent magnet 5 is only one of the bottom plate 12 of the pallet 2, that distance is constant, even where the material in the pallet is moved, the maximum thrust in existing apparatus it is possible to give a propulsive force of the same degree. Therefore, even for conductive material thrust can not be obtained largely dimensions small, the time sufficient distance difference which is not mixed with non-conductive material occurs, it is possible to apply a thrust.

Embodiment 13.
An eddy current sorting device according to a thirteenth embodiment will be described with reference to FIG. Figure 23 is a diagram showing a configuration of an eddy current sorting apparatus according to an embodiment of the present invention. Eddy current sorting apparatus 100, the recovery container 4a is provided three. Be sorted object is adapted to be introduced into the central portion of the pallet 2. Conductive material 22b having a hard roll and conductive material 22a having a prone shape rolling shape in the conductive material are mixed. To be sorted object, if provide propulsion in one magnetic field rotating disc 1, the force and the rotational force in the translational direction is generated in the driving force. Therefore, what the likely shape rolling, the force in the rotational direction exceeds the translational force, moves to the right in the drawing, the rolling difficult shape that moves sliding in the left side in the drawing by the force of the translational direction. According to this configuration, even if those prone as the rolling difficult shapes of rolling are mixed to be sorted mixture, by recovering in the moving direction thereof, sorting can be performed.

Embodiment 14.
An eddy current sorting device according to Embodiment 14 will be described with reference to FIG. Figure 24 is a diagram showing a configuration of an eddy current sorting apparatus according to an embodiment of the present invention. Eddy current sorting apparatus 100 includes a proximity sensor 27 of the induction type to grasp the separation status of the sorted object inside the pallet. Proximity sensor 27 is screened proceeds and the conductive material 22 is approaching, sensitive. Selection status is transmitted to the control unit 30. Proximity sensor 27 may be replaced by a temperature sensor for detecting that the conductor is heated by the eddy currents. Control unit 30 instructs the timing for recovering the material on the pallet to the discharge unit, the discharge portion receiving the instruction to recover the material on the pallet. And a control unit recovery completes sends an instruction to introduce a new material on the pallet with respect to the supply unit. According to this method, the screening time from the charged material to the pallet until discharging the material, is determined for each cycle, it is changed. In case variations such as dimensional variation and material of the object to be sorted object is greater, without reducing the amount of processing by reducing as much as possible the waste of sorting time it can be kept sorting purity.

Or eddy current sorting device according to the configuration and the present invention operate like a has the following effects. The nature of the eddy current sorting, the smaller the size of the conductive material of the object to be sorted object in, since it is smaller propulsion force generated, apart sufficiently conductive material of a non-conductive material, is good purity separated the time required for the longer. According to the present invention, by changing the time until the discharge from the charged material therein pallets, depending on the conductive material of the sorting target, it is easily set long time for applying the driving force it can.

Between the conductive material and the magnet surface is only one pallet, the distance is because it is small and constant, where even the material has moved to in the pallet, the promotion of more than the maximum thrust comparable in existing apparatus it is possible to give the force. Also, because they are selected by moving only the conductive material on the pallets, the conductive material and a non-conductive material than the conventional rotating disc magnet system for performing the sorting and moving together, non-conductive in the course of screening material There was moved to the conductive material side, it is hardly mixed.

The above effects, it becomes possible to high purity screened against the conductive material of small dimensions, such as thin copper wire of about 0.2 ~ 0.6 mm. Moreover, unlike the existing technique for sorting while feeding in the radial direction of the rotating disc magnet, since the sorting in the entered location on the pallet is performed, it does not require a radial length of the rotating magnet selection. Therefore, the throughput improvement, it is not necessary to increase the radius of the rotating magnet can be accommodated by increasing the number of pallets to be combined with one of the rotating magnet as required.

The present invention is within the scope of the invention, or a combination of the embodiments freely, as appropriate each embodiment, modifications can be omitted.

First magnetic field rotational disc, 1a magnet side, 1b yoke side, 2 pallets, 2a turned side, 2b anti-up side, 3 supply unit, 3a supply lanes, 3b holding vessel, 4 discharge portion, 4a collection container, 4b discharge chute , 4c-off valve, 5 permanent magnet, 6 disc, 7 yoke plate, 8 rotation axis, 9 a bearing, 10 driving motor, 11 coupling, 12 bottom plate, 13 the outer edge portion, 14 drive unit, 15 pallet drive motor 17 auxiliary magnetic field rotating disk, 18 pallets drive ring, 19 pallet tilting axis, 20 ultrasonic transducers, 21 a lid, 22 a conductive material, 23 non-conductive material, 24 to be sorted object, 25 detector, 30 control unit, 100 eddy current sorting device.

Claims (20)

  1. A magnetic field rotating disk in which a plurality of permanent magnets are arranged in the circumferential direction is reversed alternately polarity,
    A pallet which is spaced apart from the magnetic field rotating disk,
    A driving unit rotating shaft is attached to the magnetic field rotation disc,
    And holding the sorted object, a supply unit for supplying a predetermined amount of the object to be sorted object in the pallet,
    Has two collection container, and a discharge portion for recovering the sorted object supplied from the supply unit to consist of a closed state to an open state in the pallet to the collection container,
    Wherein the magnetic field rotating disk, the driving unit, and a control unit for controlling the supply and the discharge unit includes,
    A first step of supplying a prescribed amount of the sorted object in the pallet from the supply unit,
    After completion of the first step, a predetermined time has elapsed, a second step of the open state of the discharge portion from the closed state,
    After completion of the second step, a third step of returning the discharge portion in the closed state, run,
    When the third step is completed, the eddy current sorting device and executes from the first step to the third step again.
  2. Wherein the magnetic field rotating disk is disposed toward the magnet side up,
    The pallet, eddy current sorting device according to claim 1, characterized in that it is disposed above the magnetic field rotating disk.
  3. Wherein the magnetic field rotating disk and the pallet, the eddy current sorting device according to claim 2, characterized in that it is tilted together in the same direction.
  4. The magnetic field rotational disc, an eddy current sorting device according to claim 3, characterized in that rotates clockwise as viewed from the top.
  5. The magnetic field rotational disc, an eddy current sorting device according to claim 3, characterized in that rotation when viewed from the top counter-clockwise.
  6. Wherein the magnetic field rotating disk is disposed a magnet side down,
    The pallet, eddy current sorting device according to claim 1, characterized in that it is arranged below the magnetic field rotating disk.
  7. The pallet, eddy current sorting device according to claim 2, the thickness of the bottom plate characterized in that it increases from the middle toward the supplying side to counter the input side.
  8. The pallet, eddy current sorting device according to claim 2, the thickness of the bottom plate characterized in that it increased at a constant rate toward the supplying side to counter the input side.
  9. The discharge section, an eddy current sorting device according to claim 8, characterized in that it comprises three of the collection container.
  10. Eddy current sorting device according to claim 2, characterized in that it comprises an ultrasonic vibrator for vibrating the pallet in the vertical direction.
  11. The polarity is reversed alternately provided with a plurality of auxiliary magnetic field rotating disc permanent magnets are arranged in the circumferential direction,
    The auxiliary magnetic field rotating disc, an eddy current sorting device according to claim 2, characterized in that the magnet side down is arranged above the pallet.
  12. The auxiliary magnetic field rotating disc shares the rotation axis with the magnetic field rotating disk, an eddy current sorting device according possible to Claim 12, characterized in that polarities of the permanent magnets is opposite facing.
  13. The pallet, the discharge portion is not kept horizontal in the closed state, an eddy current sorting device according to claim 1, characterized in that it is inclined the discharge portion is in the open state.
  14. The pallet, eddy current sorting device according to claim 1, characterized in that the oscillating movement.
  15. The discharge section, a brush, an eddy current sorting device according to claim 1, characterized in that it comprises a rotary brush or air nozzles.
  16. The discharge portion has three of the collection container,
    The supply unit includes an eddy current sorting device according to claim 1, wherein the supplying the object to be sorted object in the center of the pallet.
  17. The pallet to be rotated in the circumferential direction of the magnetic field rotational discs, plurality, eddy current sorting device according to claim 1, characterized in that it is arranged annularly.
  18. Magnetic field rotating disc and pallets, alternately, an eddy current sorting device according to claim 1, characterized in that it is arranged in the vertical direction.
  19. A magnetic field rotating disk in which a plurality of permanent magnets are arranged in the circumferential direction is reversed alternately polarity,
    A pallet which is spaced apart from the magnetic field rotating disk,
    A detector for detecting an image of the sorted object containing a conductive material and a non-conductive material which is supplied to the pallet,
    And determining controller fractionation degree of the object to be sorted object based on an image which the detector detects,
    Rotary shaft is attached to the magnetic field rotation disc, a driving unit for rotating the magnetic field rotating disk in accordance with an instruction of the control unit,
    Said holding an object to be sorted object supply unit for supplying a predetermined amount of the object to be sorted object to the input side of the pallet in accordance with an instruction of the control unit,
    Has two collection container, and a discharge unit for setting a use state of the collection container in an open or closed in accordance with an instruction of the control unit,
    Wherein,
    A first step of instructing the supply of the object to be sorted object in the supply unit,
    It instructs the closed state to the discharge unit, the said drive unit and a second step of instructing the rotation of the magnetic field rotating disk,
    Acquiring an image of the object to be sorted object from the detector, a third step of determining fractional degree of the object to be sorted object from the image,
    Wherein when determining the separation of the object to be sorted object and good, and a fourth step of indicating the open state to the discharge unit, run,
    When the fourth step is completed, the eddy current sorting device and executes from the first step to the fourth step again.
  20. A magnetic field rotating disk in which a plurality of permanent magnets are arranged in the circumferential direction is reversed alternately polarity,
    A pallet which is spaced apart from the magnetic field rotating disk,
    A driving unit rotating shaft is attached to the magnetic field rotation disc,
    And holding the sorted object, a supply unit for supplying a predetermined amount of the object to be sorted object in the pallet,
    Has two collection container, and a discharge portion for recovering the sorted object supplied from the supply unit to consist of a closed state to an open state in the pallet to the collection container,
    Wherein the magnetic field rotating disk, said drive unit, a control unit for controlling the supply and the discharge portion, a eddy-current sorting method in an eddy current sorting device provided with,
    A first step of supplying a prescribed amount of the sorted object in the pallet from the supply unit,
    After completion of the first step, a predetermined time has elapsed, a second step of the open state of the discharge portion from the closed state,
    After completion of the second step and a third step of returning the discharge portion in the closed state, comprising,
    The third the step is completed, an eddy current screening methods and executes from the first step to the third step again.
PCT/JP2015/056456 2014-07-03 2015-03-05 Eddy current selection device and eddy current selection method WO2016002256A1 (en)

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CN 201580031803 CN106457314A (en) 2014-07-03 2015-03-05 Eddy current selection device and eddy current selection method
EP20150814598 EP3165293A4 (en) 2014-07-03 2015-03-05 Eddy current selection device and eddy current selection method
JP2016531134A JP6289638B2 (en) 2014-07-03 2015-03-05 Eddy current sorting device and an eddy current screening methods

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DE19737161A1 (en) * 1997-08-26 1999-04-22 Hamos Gmbh Recycling Und Separ Separation of shredded ferrous and nonferrous metals
JP2003103195A (en) * 2001-09-28 2003-04-08 Kenzo Takahashi Shifting magnetic field type drum magnetic separator

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JPWO2016002256A1 (en) 2017-04-27 application
JP6289638B2 (en) 2018-03-07 grant

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