JPS5813954Y2 - metal sorting equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a metal sorting device that selects and separates a mixture of nonmetallic materials, nonmagnetic conductive materials, and magnetic materials using a linearly moving magnetic field.

Conventionally, as this type of metal sorting apparatus, one shown in FIG. 1 has been developed.

In the figure, reference numeral 1 denotes a magnetic pole that generates a linear moving magnetic field, a so-called magnetic pole of a linear motor, and is composed of an iron core 2 and a multiphase winding 3.

4 is a belt that moves around the magnetic pole 1 via a roller 5;
A conveyor belt 6 is driven by rollers 7 and conveys the objects to be sorted, and is installed so that a portion thereof is located below the magnetic pole 1.

8,910 are nonmetallic objects, nonmagnetic conductive objects, and magnetic objects separated from the objects to be sorted; 11.12.13
14 is a non-gold layer material hopper, a non-magnetic conductive material hopper and a magnetic material hopper which receive these 8 and 9° 10, 14 is a non-magnetic conductive material 9 into a non-magnetic conductive material hopper 12, and 15 is a magnetic material 10. These are partition plates for guiding the magnetic material to the magnetic material hoppers 13, respectively.

Next, the operation of the conventional metal sorting apparatus configured as described above will be explained based on the drawings.

First, the linear motor is driven to generate a moving magnetic field in the direction of arrow A in the figure, and the belt 4 is similarly moved in the direction of arrow A at a speed slower than the moving magnetic field.

On the other hand, the objects to be sorted are conveyed on the conveyor belt 6 and are conveyed below the magnetic pole 1.

Here, the objects to be sorted have reached the end of the conveyor belt 6, and the nonmetallic objects 8, which are not affected by the magnetic poles 1, fall from the end of the conveyor belt 6 into the nonmetallic hopper 11. .

The non-magnetic conductive material 9 is connected to the magnetic pole 1 at the end of the conveyor belt 6.
Under the influence of the moving magnetic field, it is repelled from the surface of the magnetic pole 1 in the direction of the moving magnetic field, is slightly blown away, is guided by the partition plate 14, and falls into the non-magnetic conductive material hopper 12.

On the other hand, the magnetic material 10 is influenced by the moving magnetic field of the magnetic pole 1 at the end of the conveyor belt 6, and is attracted by the magnetic force to the surface of the belt 4.

In this attracted state, it moves in the direction of arrow A together with the belt 4, and when it is sent outside the magnetic field 1 of the magnetic pole 1, the attraction force disappears, and it falls away from the surface of the belt 4 and into the magnetic material hopper 13.

By sequentially repeating the above operations, the objects to be sorted are selectively separated into nonmetallic objects, nonmagnetic conductive objects, and magnetic objects, and are accumulated in each hopper. When sorting magnetic conductive objects 9, it is necessary to make the length of the magnetic pole 1 sufficiently long in order to make a significant difference in the falling path. It has drawbacks such as unavoidable cost increase.

This idea was made with the aim of eliminating the drawbacks of conventional devices as described above, and the length of the magnetic pole that generates a linearly moving magnetic field is the length necessary for separating non-metallic objects and non-magnetic conductive objects. , and a direct current magnetic field is used to separate non-magnetic conductive materials from magnetic materials.

Hereinafter, the configuration of an embodiment of the metal sorting device according to this invention will be explained based on FIG. 2.

In the figure, belt 4, roller 5, conveyor belt 6, roller 7, non-metallic material 8, non-magnetic conductive material 9, magnetic material 10, non-metallic material hopper 11, non-magnetic conductive material hopper 12, magnetic material hopper 13 , the partition plates 14 and 15 are the same as those of the conventional device shown in FIG. 1, so their explanation will be omitted.

Reference numeral 16 denotes a magnetic pole that generates a linearly moving magnetic field, which is provided with a length limited to that required for sorting the non-metallic object 8 and the non-magnetic conductive object 9, and is constituted by an iron core 17 and a multiphase winding 18.

19 is a DC electromagnet provided at the end of the magnetic pole 16 in the moving magnetic field direction for generating a DC magnetic field;
1.

Next, the operation of one embodiment of the metal sorting apparatus according to the invention constructed as described above will be explained based on the drawings.

First, like the conventional device, the magnetic pole 16 is driven to generate a moving magnetic field in the direction of arrow A in the figure, and the DC electromagnet 19 is also driven to generate a DC magnetic field, and the belt 4 is similarly moved in the direction of arrow A at a slower speed than the magnetic field. move it.

On the other hand, the selected object is conveyed on the conveyor belt 6 and is conveyed below the magnetic pole 16.

Here, even if the objects to be sorted reach the end of the conveyor belt 6,
Among the objects to be sorted, non-metallic objects 8 which are not affected by the magnetic pole 16 are transported from the end of the conveyor belt 6 to the non-metallic hopper 1.
Fall within 1.

In addition, the non-magnetic conductive material 9 is placed at the magnetic pole 1 at the end of the conveyor belt 6.
6, it is repelled from the surface of the magnetic pole 16 in the direction of the moving magnetic field, is slightly blown away, is guided by the partition plate 14, and falls into the non-magnetic conductive material hopper 12.

Further, the magnetic material 10 is placed at a magnetic pole 16 at the end of the conveyor belt 6.
Under the influence of the moving magnetic field of the belt 4, it is attracted by the magnetic force and adsorbed to the surface of the belt 4.

In this attracted state, even if the belt 4 moves in the direction of arrow A and leaves the magnetic field of the magnetic pole 16, the attracted state is continued by the DC magnetic field of the DC electromagnet 19, and the attraction force disappears when the belt 4 is moved a certain distance away from the DC magnetic field. Magnetic material hopper 1 away from the surface of belt 4
Fall into 3.

By sequentially repeating the above operations, the objects to be sorted are selectively separated into non-metallic, non-magnetic conductive material buttons and magnetic materials, and are accumulated in the respective hoppers.

In the above embodiments, a DC electromagnet is used as the source of the DC magnetic field, but the present invention is not limited to this, and a permanent electromagnet can also be used, which has the advantage of eliminating the need for a DC power supply.

As explained above, the metal sorting device of this invention limits the length of the magnetic pole that generates a linearly moving magnetic field to the length necessary for sorting non-magnetic conductive materials, and uses a DC magnetic field to sort magnetic materials. By configuring it to do so, the expensive magnetic pole part can be made smaller and the power supply capacity can also be reduced, so the practical effects are great.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing the structure of an example of a conventional metal sorting device, and FIG. 2 is a schematic sectional view showing the structure of an embodiment of the metal sorting device according to this invention. Also in the figure, 6 is a conveyor belt, 9 is a non-magnetic conductive material, 1
0 is a magnetic substance, 16 is a magnetic pole, and 19 is a DC electromagnet. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (2)

[Scope of utility model registration request] (1) A sulchelt conveyor for conveying a group of substances including magnetic substances and non-magnetic conductive substances, a magnetic pole that is provided above the belt conveyor so that a part of it is opposed and generates a linear moving magnetic field, and the above-mentioned magnetic poles. Interposed between the magnetic pole and the substance group, moves in the direction of the moving magnetic field and works together with the moving magnetic field to attract and guide the magnetic object, and also gives a thrust to the non-magnetic conductive object in the direction of the moving magnetic field. 1. A metal sorting device comprising a guiding means, and further comprising: a direct current magnetic field attached to an end portion of the magnetic pole in the direction of the moving magnetic field. (2) The metal sorting device according to claim (1), wherein the DC magnetic field is formed by a permanent magnet.