JPS6146165B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an induction magnetic filter for a dry ultra-high magnetic force magnetic separator.

Conventionally, dry ultra-high magnetic force magnetic separators use an induced magnetic field to pass the processed material through a narrow gap between a pole and an induced magnetic pole (roll), and attract and attract ferromagnetic fine powder to the induced magnetic pole (roll) side. There are those that use induction magnetic rolls to discharge, and those that have two electromagnetic rotors facing each other, and the processed material is passed through the gap between these rotors, and the ferromagnetic fine powder is attracted to and discharged by these rotors. Counterpole type magnetic separation systems are known, but in all of these systems, as shown in Figure 1 of the attached drawings,
The direction M of the applied magnetic field and the direction F of supplying the material to be processed are perpendicular to each other, making it difficult to process a large amount of material, and it is also difficult to separate the ferromagnetic material captured by the roll or rotor from the roll or the like. Ta.

The present applicant has already developed a dry type ultra-high magnetic force magnetic separator having the configuration shown in Fig. 2 in order to eliminate the drawbacks of the conventional ones and, in particular, to enable large-scale processing. is suggesting.

The structure and operation will now be briefly explained as follows.

As shown in FIG. 2, one vertical yoke of the yoke 1, which has an approximately mouth-shaped cross-section, has a section cut out horizontally in the middle, and the upper and lower sections provided with this cut-out are Vertical yoke part 1
A coil ₂ is wound around each of the yoke portions 1 and 12, so that an N pole and an S pole are generated at the end faces of each of the yoke portions _{1 1} and 1 ₂ . These yoke parts 1
₁ and ₁₂ , the upper yoke portion ₁₁ is provided with a processing material supply groove 3 vertically passing through it, and a supply chute 4 is disposed above it. Also, N
A horizontal rotary disk 5 is arranged in the gap between the pole and the south pole so as to be freely rotatable by a motor 6 with a reducer, and around this rotary disk 5,
A ring-shaped induction magnetic filter 7 is attached, and a portion of the induction magnetic filter 7 moves between the north pole and the south pole as the rotary disk 5 rotates.
It consists of a large number of ferromagnetic matrix plates stacked horizontally. Furthermore, outside the magnetic field area of the yoke 1, the upper part of the induction magnetic filter 7 is
A cleaning device 9 provided with a number of air nozzles 8 is arranged. Further, in the gap between the N pole and the S pole, an endless product conveyor belt 10 is installed horizontally under the induction magnetic filter 7 from a motor 11 with a speed reducer through a pulley 12 in the direction of arrow X. It is starting to run like this.

The operation of this device is as follows.

When the workpiece B is fed from the supply chute 4 in the direction of the arrow, the workpiece B passes through the vertical supply groove 3 formed in the upper vertical yoke ₁₁ and is horizontally rotated by the motor 6 with a speed reducer. The magnetic flux is supplied to an induction magnetic filter 7 attached around a rotary disk 5. This induction magnetic filter 7 is magnetized by the magnetic field of the N magnetic pole and the S magnetic pole excited by the coil 2, and the ferromagnetic material K in the processing material B is magnetized.
is attracted and transported out of the magnetic field area as the rotary disk 5 rotates, but the non-magnetic material H is continuously moved by gravity from the motor 11 with a speed reducer via the pulley 12. As a result, the non-magnetic material H is accommodated in the storage box 13.

On the other hand, the ferromagnetic material K attracted to the induction magnetic filter 7 is separated from the filter 7 by compressed air blown from the air nozzle 8 of the cleaning device 9 outside the magnetic field region, and passes through the magnetic material chute 14 into the ferromagnetic material. It is stored in the storage box 15 of item K.

In this way, in this device, the N of the yoke 1 is
The direction of the magnetic field applied by the poles and S poles is parallel to the direction in which the processed material B is supplied, and is perpendicular to the many horizontally stacked ferromagnetic matrix plates that constitute the induction magnetic filter 7. Since the material to be processed B is supplied to the area, the magnetic field strength gradient is increased and the adsorption area becomes larger. Therefore, it is possible to perform large-scale processing under a strong magnetic field, and the throughput of the conventional method is reduced. However, it is not necessary to separate the ferromagnetic material from the ferromagnetic matrix plate that makes up the induction magnetic filter.
It was not good.

Therefore, the present invention improves the above-mentioned drawbacks of the previously proposed device, and solves the drawbacks of both conventionally known methods, such as a small throughput and difficulty in separating the ferromagnetic material attracted to the induction magnetic pole. The object of the present invention is to obtain a new induction magnetic filter for a dry type ultra-high magnetic force magnetic separator that can eliminate the above problems.

In the present invention, in order to achieve this objective, a large number of ferromagnetic bars having appropriate cross sections are arranged on one plane at mutual intervals, and such planes are arranged at mutual intervals. In this case, between vertically adjacent planes, the ferromagnetic bars are arranged so as to be offset from each other in the vertical direction.

Hereinafter, the present invention will be explained based on FIGS. 3 to 7 of the accompanying drawings showing embodiments thereof.

First, FIG. 3 shows a first embodiment in which a large number of ferromagnetic rods 30 each having a circular cross section are arranged on one plane with an interval of P ₁ from each other, and three , and are arranged in the vertical direction with an interval of P ₂ from each other, in this case, between the adjacent planes and , ferromagnetic rods 30
are arranged horizontally shifted by P ₁ /2. Note that the ferromagnetic rods 30 arranged in the horizontal and vertical directions in this manner are firmly attached within a frame 31 having an appropriate shape.

Further, FIG. 4 shows the embodiment of FIG. 3, except that the cross section of the ferromagnetic rod 40 is an isosceles triangular shape, the apex angle faces upward, and the bottom surface is horizontal. It is similar to Note that 41 in the figure indicates a frame.

Furthermore, FIG. 5 shows an embodiment similar to the embodiment of FIG. 3, except that the cross section of the ferromagnetic rod 50 is square, and one diagonal thereof is in the vertical direction. . Note that 51 in the figure indicates a frame.

Finally, FIG. 6 is the same as the embodiment shown in FIG. 3, except that the cross section of the ferromagnetic rod 61 is semicircular, the arc portion faces upward, and the bottom surface is horizontal. This shows an example. In addition, in the figure, 6
1 indicates the frame.

In addition, as a modification of these embodiments, instead of a large number of ferromagnetic rods, as shown in FIG. In this case, it is also possible to use expanded metals 70 that are vertically adjacent to each other and whose openings are shifted by half a pitch in the horizontal direction. Note that 71 in the figure indicates a frame.

Furthermore, in each example, the number of planes arranged in the vertical direction, the shape and dimensions of the cross section of the ferromagnetic rod, the pitches P ₁ and P ₂ in the horizontal and vertical directions, etc. are determined depending on the properties of the material to be treated and The optimum one shall be selected depending on the classification accuracy.

As described above, in the present invention, as a dry type ultra-high magnetic force magnetic separator, an induction magnetic filter is placed horizontally in the gap between two vertically arranged magnetic poles so as to be perpendicular to the direction of the magnetic field applied by the two magnetic poles. In a device that is arranged movably and is configured to feed the processed material perpendicularly in the same direction as the direction of the applied magnetic field, a large number of ferromagnetic bars are used as a magnetic induction filter at intervals in the horizontal and vertical directions. In this case, the vertically adjacent ferromagnetic rods are arranged horizontally offset from each other, so that each ferromagnetic rod absorbs the magnetic material in the processed material that is supplied from vertically above. The ferromagnetic rods are spaced apart from each other horizontally and vertically. Therefore, it becomes possible to easily separate the magnetic substance adsorbed to the circumferential surface by compressed air jetted from the air nozzle. Note that it is clear that the same effect can be obtained even when a ferromagnetic expanded metal is used instead of the ferromagnetic bar.

In this way, the present invention improves the trapping efficiency of the previously proposed dry type ultra-high magnetic force magnetic separator for ferromagnetic fine particles, etc., and also improves the separation of ferromagnetic fine particles outside of a magnetic field. The purpose of the present invention is to provide an induction magnetic filter that can overcome the drawback of the small throughput of the conventional magnetic filter.

[Brief explanation of the drawing]

FIG. 1 is an explanatory perspective view showing the relationship between the direction of the induced magnetic field of the induced magnetic filter of a conventionally known magnetic separator and the feeding direction of the processed material, and FIG. A schematic diagram showing the configuration of a magnetic separator, FIGS. 3 to 6 are explanatory perspective views showing various embodiments of the present invention, and FIG. 7 is an explanatory perspective view showing a modified example thereof. 30, 40, 50, 60...ferromagnetic bar; 3
1,41,51,61,71...waku;70...
expander metal.

Claims (1)

[Claims] 1. Vertically spaced and facing
An induction magnetic filter is placed in the gap between the NS magnetic poles so as to be horizontally movable perpendicular to the direction of the applied magnetic field by both magnetic poles, and the processed material is placed through the induction magnetic filter perpendicularly in the same direction as the direction of the applied magnetic field. In an induction magnetic filter in a dry high-magnetic magnetic separator that is designed to supply An induction magnetic filter characterized in that the ferromagnetic bars are arranged at intervals from each other, in which case the ferromagnetic bars in adjacent horizontal planes are arranged horizontally shifted from each other. 2. Each horizontal plane is arranged at equal intervals in the vertical direction, the ferromagnetic bars are arranged at equal intervals in each horizontal plane so that they have the same pitch, and in adjacent horizontal planes, the ferromagnetic bars are arranged at equal intervals in the vertical direction. The induction magnetic filter according to claim 1, which is shifted by /2 pitch. 3. The induction magnetic filter according to claim 1 or 2, wherein the ferromagnetic rod has a circular cross section. 4 The cross section of the ferromagnetic rod is an isosceles triangle,
3. The induction magnetic filter according to claim 1, wherein the induction magnetic filter is arranged such that the apex angle faces upward and the bottom surface is horizontal. 5. The induction magnetic filter according to claim 1 or 2, wherein the ferromagnetic bars have a square cross section and are arranged such that one diagonal line is perpendicular. 6. The induction magnetic filter according to claim 1 or 2, wherein the ferromagnetic bars have a semicircular cross section and are arranged so that the arcuate surface faces upward and the diametrical surface is horizontal.