JP2002192012A - Apparatus and method for sorting nonferrous metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sort various objects to be treated according to the nature of them in a device for sorting a nonferrous metal from industrial waste. SOLUTION: This device for sorting a nonferrous metal is provided with a conveyer belt to transport the objects to be treated, a hollow outer cylinder around which the conveyer belt is wound, and a magnetic rotor which is rotatably provided in the outer cylinder, which can approach to and separate from the inner peripheral surface of the outer cylinder, and in which different magnets are alternately arranged in a peripheral direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-ferrous metal separation apparatus and a non-ferrous metal separation method used for separating and recovering various industrial wastes in which magnetic substances, non-ferrous metals and other wastes are mixed.

[0002]

2. Description of the Related Art As a conventional non-ferrous metal separation apparatus, there has been known an apparatus for separating industrial waste as a raw material to be separated into non-ferrous metals, magnetic substances, and other wastes by electromagnetic force. This device will be briefly described below.

A pulley (rear pulley) is rotated by a motor, and a supply belt (transport belt) wound around another front pulley is rotated. Waste as raw material is sent to the front pulley while riding on the supply belt. Inside the front pulley, there is provided a rotating rotor (magnet rotor) having a permanent magnet in which N poles and S poles are alternately arranged. Therefore, the waste sent to the front pulley side is separated by the electromagnetic force from the rotating rotor. In other words, non-ferrous metals such as aluminum, copper, and brass are skipped far forward by electromagnetic repulsion,
The magnetic substance is rotated while being attracted to the front pulley while being attracted to the front pulley by the magnetic force of the rotating rotor and rotates downward, and falls slightly below the lower side when the magnetic force of the magnet rotor is weakened.
Other wastes rotate together with the front pulley and fall just below the front pulley, and are separated.

[0004] The magnet rotor of such a conventional apparatus is roughly classified into two types. One is a type in which the axis of the magnet rotor and the axis of the front pulley are fixed to each other, and both rotate coaxially. The other is an eccentricity between the axis of the magnet rotor and the axis of the front pulley. This is a type in which the axis of the magnet rotor can be moved along the front inner peripheral surface as much as possible.

[0005]

With the conventional apparatus, it cannot be expected that any of the above-mentioned types can perform effective separation regardless of the type of waste to be treated. Was. Therefore, the present invention has been made in view of this point, and an object of the present invention is to provide a separation apparatus and a separation method that can perform more effective separation regardless of the type of a processed material.

[0006]

According to the present invention, there is provided a non-ferrous metal sorting apparatus comprising: a conveying belt for conveying an object to be processed; a hollow outer cylinder around which the conveying belt is wound; A magnet rotor is provided rotatably, and is provided with magnets alternately arranged in the circumferential direction so as to be able to approach and separate from the inner peripheral surface of the outer cylinder.

[0007] In the above non-ferrous metal separation apparatus,
The magnet rotor is configured to approach and separate from the inner peripheral surface of the outer cylinder on a line connecting the axis of the magnet rotor and the axis of the outer cylinder.

Further, in the method for separating non-ferrous metals according to the present invention, an object to be processed is conveyed by a conveyor belt, and magnets having magnetic poles different in the circumferential direction are alternately arranged in an outer cylinder on the hollow around which the conveyor belt is wound. By rotating the arranged magnet rotors and moving the magnet rotors closer to and away from the inner peripheral surface of the outer cylinder, the strength of the magnetic field applied to the workpiece on the conveyor belt via the outer cylinder Is changed to perform the separation by magnetic force of the processing object.

[0009]

FIG. 1 is an embodiment of a non-ferrous metal sorting apparatus according to the present invention.

First, the structure of this device will be described. This apparatus transports waste to be separated supplied to a supply hopper 18 to a front pulley (outer cylinder) 14B by a supply belt (conveying belt) 13 and controls the rotation of the magnet rotor 11 rotating in the front pulley 14B. By electromagnetic action, it is separated into non-ferrous metals, magnetic substances, and other wastes. More specifically, the device comprises a frame 17. A pair of pulleys, that is, rear and front pulleys 14A and 14B are rotatably provided on the frame 17 at a predetermined interval (for example, 1.5 m). A supply belt 13 for supplying a raw material, which is provided with an arbitrary number of scrapers 12 for scraping a magnetic substance, is wound around these pulleys 14A and 14B.

Above the rear pulley 14A, a supply hopper 18 for supplying waste as a raw material is provided. Further, the rear pulley 14A and the frame 17
A power transmission belt 15A is wound around a belt driving motor 15 fixed to the power transmission belt. Thus, the supply belt 13 is rotated by the motor 15 in the direction of arrow A1 in the drawing, for example, at a speed of 20 to 120 m / min.

In the internal space of the front pulley 14B, the raw materials conveyed by the supply belt 13 are moved by electromagnetic force and natural fall into three chutes 19A,
A magnet rotor 11 for separating into 9B and 19C is rotatably provided. This magnet rotor 11
The power from the magnet rotor driving motor 16 fixed to the frame 17 is transmitted by the power transmission belt 16A, and is rotated at a speed of, for example, 1500 rpm. A cover 20 for preventing scattering of waste is provided further forward of the front pulley 14B.

Next, the operation of this device will be described. When the belt driving motor 15 rotates, the rear pulley 14A rotates. When the rear pulley 14A rotates, the supply belt 13 hung on it also rotates. Supply belt 13
Is provided with a front pulley 14B. A magnet rotor 11 is provided inside the front pulley 14B, and is rotated by a magnet rotor driving motor 16. The waste conveyed by the supply belt 13 is distributed to chutes 19A to 19C by electromagnetic force generated on the front pulley 14B. Specifically, it is as follows.

When waste as a raw material is supplied from the supply hopper 18, the waste is sent to the front pulley 14B by the supply belt 13. This front pulley 14B
Inside, the magnet rotor 11 is rotating. An eddy current is generated in the non-ferrous metal by the electromagnetic force from the magnet rotor 11, and the non-ferrous metal is skipped far away by a repulsive force of the magnetic field generated by the non-ferrous metal and the magnetic field by the magnet rotor 11. It falls on the farthest shoot 19A. On the other hand, the magnetic material is magnetized and is attracted to the front pulley 14B, rotates downward while being reversed, and falls to the rearmost shooter 19C when the magnetic field of the magnet rotor 11 is weakened. Other wastes rotate together with the front pulley 14B and fall into the middle shooter 19B, where they are sorted.

The electromagnetic action generated between the magnetic field on the front pulley 14B and the object to be processed will be specifically described below.

That is, a magnetic field whose N and S periodically change is formed on the front pulley 14B by the rotation of the magnet rotor 11 inside the front pulley 14B. When a non-ferrous metal passes through this constantly changing magnetic field, a non-ferrous metal generates a magnetic field in the opposite direction to cancel the change with the magnetic field. Therefore, the magnet rotor 11
The non-ferrous metal is blown away by the repulsive action of the magnetic field generated by the magnetic field and the magnetic field generated in the non-ferrous metal as the object to be processed. On the other hand, when passing through the magnetic field, the magnetic material is easily magnetized and rotates while being attracted to the front pulley 14B. And when the magnetic field weakens,
It falls from the front pulley 14B. Other wastes other than these are hardly affected by the vortex of the magnetic field, and thus fall into the chute 19B immediately below the front pulley 14B with the rotation of the front pulley 14B.

Thus, the embodiment of the present invention is configured such that the magnetic force from the magnet rotor 11 can be adjusted according to the sorting target. Hereinafter, the adjustment of the magnetic force will be described.

The magnet rotor 11 may be arbitrarily moved in the radial direction of the front pulley 14B according to the object to be processed. That is, by moving the position of the shaft of the magnet rotor 11 in the radial direction and arbitrarily adjusting the magnetic field intensity on the front pulley 14B, it is possible to sort a wide range of processed objects. More specifically, in the case of an object requiring a larger repulsive force, the surface of the magnet rotor 11 is brought closer to the inner surface of the front pulley 14B, so that a magnetic field having a stronger magnetic field strength is generated. Can be given to.
In the case of an object to be processed which requires a smaller repulsive force, a magnetic field having a weaker magnetic field strength can be given by moving the surface of the magnet rotor 11 away from the inner surface of the front pulley 14B. Thus, the magnet rotor 11
Can be arbitrarily moved in the radial direction in the front pulley 14B, so that it is possible to cope with the type of the object to be processed.

Here, by moving the magnet rotor 11 in the front pulley 14B, the distance between the magnet rotor 11 and the magnet rotor driving motor 16 changes. In this case, the distance between the two may be adjusted by moving the magnet rotor driving motor 16 back and forth.

Next, a mechanism for moving the magnet rotor 11 in the radial direction of the front pulley 14B will be described. FIG. 2 is a sectional view of a magnet rotor which is a main part of the embodiment of the present invention.

First, the structure of this device will be described. The magnet rotor 11 is provided inside the front pulley 14B. The magnet rotor 11 and the front pulley 14B have different central axes, and the magnet rotor 11 has a structure that can move in the radial direction of the front pulley 14B. A supply belt 13 is wound around the front pulley 14B, and a drive belt 16A is wound around the magnet rotor 11.

Next, the operation of the main part will be described. Since the main part has the above-described structure, the distance between the surface of the magnet rotor 11 and the surface of the front pulley 14B can be arbitrarily changed. That is, in the case of an object requiring a larger repulsive force, the central axis of the magnet rotor 11 is brought closer to the inner surface of the front pulley 14B to apply a magnetic field having a stronger magnetic field strength to the object. , So that good separation can be achieved. In the case of an object to be processed which requires a smaller repulsive force, a magnetic field having a weaker magnetic field strength can be given by moving the center axis of the magnet rotor 11 away from the inner surface of the front pulley 14B, thereby enabling appropriate separation. Can be. In this way, various kinds of objects to be processed can be separated.

[0023]

According to the present invention, the magnet rotor can be moved so as to approach and separate from the inner peripheral surface of the outer cylinder around which the waste transport belt is wound. The intensity of the magnetic field applied to the object to be processed flowing therethrough can be appropriately changed by arbitrarily changing the intensity of the magnetic field. Accordingly, it is possible to more appropriately separate various kinds of objects to be processed from the object requiring a larger repulsive force to the object requiring a smaller repulsive force.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an embodiment of a sorting apparatus according to the present invention.

FIG. 2 is a sectional view of a main part of the sorting apparatus according to the present invention.

[Explanation of symbols]

 11 Magnet roller 13 Supply belt 14A, 14B Pulley

Claims (3)

[Claims] 1. A transport belt for transporting an object to be processed, a hollow outer cylinder around which the transport belt is wound, and an inner peripheral surface of the outer cylinder rotatably provided in the outer cylinder. A magnet rotor having magnets of different magnetic poles alternately arranged in the circumferential direction arranged so as to be able to approach and separate from the non-ferrous metal. 2. The apparatus according to claim 1, wherein the magnet rotor is moved toward and away from the inner peripheral surface of the outer cylinder on a line connecting the axis of the magnet rotor and the axis of the outer cylinder. The non-ferrous metal sorting apparatus according to claim 1, wherein 3. An object to be processed is transported by a transport belt, and a magnet rotor having magnets of different magnetic poles arranged alternately in a circumferential direction is rotated in a hollow outer cylinder around which the transport belt is wound, By moving the magnet rotor toward and away from the inner peripheral surface of the outer cylinder, the intensity of the magnetic field applied to the workpiece on the transport belt via the outer cylinder is changed, and the magnetic field of the workpiece is changed. A method for separating non-ferrous metals, wherein the separation is performed by magnetic force.