JPH0217639Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a sorting device for dust containing metals. [Prior art] For example, as a dust sorting device,
There is a separation device as described in Japanese Patent No. 50-141759. In this separation device, a vibrating conveyor is provided with an armature that generates a linearly moving alternating current magnetic field, and non-ferrous metals and non-metals are separated depending on the presence or absence of electromagnetic induction force. In addition, in a method for separating a mixture described in Japanese Patent Application Laid-open No. 51-52560, a mixture of multiple types of powder and granules having different electrical conductivities is dispersed in a constant velocity fluid, and a traveling magnetic field is applied to the mixture. Each particulate material is differentiated based on the difference in conductivity of each particulate material. [Problems to be solved by the invention] The above-mentioned proposals are all separation devices or methods for separating mixtures that utilize electromagnetic force due to differences in the conductivity of the objects and differences in the flight distance of the objects. When supplying more than a certain amount of raw materials, if an insulator such as rubber or plastic is placed in front of a conductor such as aluminum in the direction of travel, the conductor accelerated by the moving magnetic field will push the insulator in front of it, causing a small amount of There was a problem that raw materials could only be supplied one at a time. An object of the present invention is to provide a dust sorting device that can process a relatively large amount of raw materials. [Means for Solving the Problems] The dust sorting device according to the present invention, which meets the above-mentioned purpose, includes a raw material supply section that supplies the raw material from which the magnetized matter has been removed, and a raw material that receives the raw material from the raw material supply section. A dust sorting device having an inclined part, a magnetic field generating means provided on the inclined part, and a raw material receiving part for the raw material separated by the magnetic field generating means, wherein the upper part of the inclined part has a A guide gutter is provided to spread the input raw material downward, and the lower part of the inclined part is bent upward. Here, in the moving magnetic field generation part, the lines of magnetic force move,
It refers to something that generates an acceleration force on an object that crosses these lines of magnetic force, and therefore, in addition to something that does it electrically,
The magnet may be mechanically rotated or linearly moved. [Function] In the dust sorting device according to the present invention,
A raw material supply section serving as a guide gutter is disposed above the slope, and the lower end of the slope is bent upward. Therefore, the raw material dust is dispersed by the guide gutter and falls onto the slope. This results in a thin layer of raw material. Then, the fallen non-ferrous metals are given an acceleration force by the moving magnetic field of the moving magnetic field generator provided on the inclined part. After that, since the lower end of the inclined part is bent upward, the direction of emission of dust is upward, and non-ferrous metals in particular are blown away in proportion to the difference in their electrical conductivity, improving separation performance. . [Example] Next, an example embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention. Here, FIG. 1 is a side view showing a schematic configuration of a dust sorting device according to an embodiment of the present invention, and FIG. 2 is a side view showing a schematic configuration of a dust sorting device according to an embodiment of the present invention. It is a schematic configuration diagram. As shown in FIG. 1, a dust sorting device 10 according to an embodiment of the present invention includes a raw material supply section 11 that supplies raw materials to be sorted, and an inclined section 12 that receives raw materials from the raw material supply section 11. , a raw material receiving section 13 that receives the raw materials separated by the inclined section 12, and a moving magnetic field generating section 14 disposed below the inclined section 12. The raw material supply section 11 has a conveyor 15 that gradually drops the raw material and a guide gutter 16 that receives the raw material supplied from the conveyor 15. The tip roller 15a of the conveyor 15 has a magnet (permanent magnet or It consists of a magnetic roller equipped with an electromagnet (electromagnet), which removes magnetic substances contained in the raw material from which lightweight substances have been removed by a wind sorter (not shown), and guides it to the rear hopper 15b. . The inclined portion 12 has a wide gutter shape, and its surface is made of a non-magnetic stainless steel plate (austenitic stainless steel) to improve sliding. A moving magnetic field generating section 14 is attached to the bottom of the inclined section 12 from the back surface, and the moving magnetic field generating section 14 has the same structure as the primary magnetic pole of the linear motor.
By flowing three-phase alternating current (or other alternating current as the case may be), the magnetic field is moved from the top to the bottom on the inclined surface 17 at high speed. As a result, acceleration is applied to the metal contained in the dust in the direction in which the magnetic field advances, and the sliding speed of the inclined portion 12 increases. Note that the lower end portion 18 of the inclined portion 12 is smoothly bent slightly upward from the horizontal direction so that dust sliding on the inclined portion 12 flies farther. The lower end of the inclined part 12 is rotatably attached to a pedestal 20 via a pin 19, and by rotating a tilting handle 21 attached to the upper center of the inclined part 12, the lower end of the inclined part 12 can be moved. 1
The angle of inclination of 2 can be changed. A raw material receiving part 13 is provided at the bottom of this inclined part 12, and a partition plate 22 that can be tilted and fixed at a predetermined position is attached to the approximate center of the raw material receiving part 13. Non-ferrous metals that fly out at high speed and non-metals such as rubber and plastics that fly out at slow speed are sorted out and dropped onto belt conveyors 23 and 24 at the bottom, respectively. In addition, in the above embodiment, it is also possible to attach a vibration source such as a vibrator to the inclined portion 12,
This further improves the sorting efficiency. Next, an experiment conducted to confirm the effects of the present invention using an apparatus as shown in FIG. 2 will be described. As shown in the figure, the inclination angle θ of the inclined part 25, the height difference h between the tip of the inclined part 25 and the partition plate 26, and the distance d from the tip of the inclined part 25 to the partition plate 26, the values are as shown in Table 1. The magnetic substances (Fe, 13 chromium) and other removed dust are dropped from the upper part of the inclined part 25 using a magnet, and the non-ferrous dust is removed when the linear motor 27, which is an example of a moving magnetic field generator, is turned on and off. The metal separation accuracy and recovery rate were measured.

[Table] Table 2 shows the weight of objects that fell into area A and area B in the figure when the linear motor switch was turned OFF.

[Table] Table 3 shows the weight of objects that fell into area A and area B in the figure when the linear motor switch was turned on.

[Effect of idea]

As is clear from the above description, the dust sorting device according to the present invention is provided with a guide gutter at the top of the inclined part to diffuse the dust raw material, thereby thinning the layer of the raw material to be sorted and improving the separation performance. Since the lower end of the inclined part is bent upward, the direction of dust emission is upward, increasing the flight distance, and improving the separation performance compared to the conventional straight inclined part.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a schematic configuration of a dust sorting device according to an embodiment of the present invention, and Fig. 2 is a schematic configuration diagram of a dust sorting device used to confirm the effects of the present invention. It is. Explanation of symbols, 10...Dust sorting device, 1
1... Raw material supply section, 12, 25... Inclined section, 13
...raw material receiving section, 14...moving magnetic field generating section, 15
... Conveyor, 16 ... Guide gutter, 17 ... Inclined surface, 18 ... Lower end, 21 ... Tilting handle, 2
2, 26... Partition plate, 27... Linear motor (moving magnetic field generator).

Claims (1)

[Scope of utility model registration request] a raw material supply section that supplies the raw material from which the magnetized portion has been removed; a sloped section that receives the raw material from the raw material supply section;
A dust sorting device having a magnetic field generating means provided on the inclined part and a raw material receiving part for the raw material separated by the magnetic field generating means, wherein the upper part of the inclined part is used to collect the raw material charged. A dust sorting device is provided with a guide gutter that spreads the dust downward, and the lower part of the inclined part is bent upward.