JP3015955B1 - Non-ferrous metal sorting machine - Google Patents

Abstract

A non-ferrous metal sorter that has a long life with little wear of a drum and does not overheat a leading end of a feeder for charging a raw material. A rotating drum made of an insulator driven at a low speed, a feeder for supplying a raw material to an upper portion of the rotating drum, and a high-speed rotating eccentrically mounted inside the rotating drum. In the non-ferrous metal sorter 10 having the magnetic pole body 15, a number of wear-resistant ceramic plates 18 or rubber plates were stuck around the rotary drum 14.

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 for separating non-ferrous metals (copper, aluminum, etc.) from a raw material falling on a rotating drum by applying a magnetic field generated by a high-speed rotating magnetic pole body disposed therein. It relates to a metal sorter.

[0002]

2. Description of the Related Art As a device for separating non-magnetic metal in a raw material, a non-magnetic metal separation device described in Japanese Patent Application Laid-Open No. 57-119856 is known. In this non-magnetic metal separation device, a rotating magnetic pole body is eccentrically arranged inside a rotating drum at a low speed, and an eddy current is generated in the non-magnetic metal in the raw material falling onto the rotating drum from above. However, it has a structure in which it is made to fly in the direction of rotation of the rotating magnetic pole body and is separated from the raw material that falls as it is.

[0003]

However, in the non-magnetic metal separation apparatus described in the above-mentioned publication, an insulator such as a reinforced plastic which does not generate an eddy current due to a rotating magnetic field is generally used as a material for the drum. For this reason, there is a problem that abrasion occurs due to the raw material to be charged and the raw material cannot be used for a long time. Also, in order to improve the efficiency of the apparatus, it is necessary to increase the strength of the magnetic field generated from the rotating magnetic pole body and to rotate the rotating magnetic pole body at a high speed. In addition, there is a problem that a portion (that is, a dropping port) of a metal feeder (chute) is overheated. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a non-ferrous metal sorter having a long life and a small wear of a drum. Then, it is another object of the present invention to provide a non-ferrous metal sorter in which the tip of a feeder into which a raw material is introduced is not overheated.

[0004]

According to a first aspect of the present invention, there is provided a nonferrous metal sorter comprising: a rotating drum made of an insulator driven at a low speed; and a feeder for supplying a raw material to an upper portion of the rotating drum. A non-ferrous metal sorter having a high-speed rotating magnetic pole body eccentrically mounted on the upper side inside the rotating drum, wherein a number of wear-resistant ceramic plates or rubber plates are attached around the rotating drum. are doing. Further, the non-ferrous metal sorting machine according to the second invention is the non-ferrous metal sorting machine according to the first invention, wherein the tip of the feeder is:
It is made of an insulating material. As a result, the rotating magnetic field generated by the high-speed rotating magnetic pole body does not generate an eddy current at the leading end of the feeder, and as a result, the leading end of the feeder does not overheat. In the non-ferrous metal sorter according to the third invention, in the non-ferrous metal sorter according to the first and second inventions, the high-speed rotating magnetic body is provided around a rotating body and the rotating body. A plurality of magnet groups are arranged, and in each magnet group, a plurality of magnets are arranged with a gap so that their polarities are oriented in the radial direction so that adjacent magnet poles have different polarities. In the gap between the magnets, a horizontal magnet for increasing the magnetic force of the adjacent magnet is provided on the peripheral surface of the rotating body. As a result, the magnets are arranged in series, and the magnetic flux density generated from the magnetic poles increases.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment embodying the present invention will be described. FIG. 1 is a front view of a non-ferrous metal sorter according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a side view thereof, FIG. 6 is a sectional view of a high-speed rotating magnetic body, FIGS. 6 and 7 are partial sectional views of a high-speed rotating magnetic body according to a modification, and FIG. 8 is a graph showing magnetic flux density around a rotating drum.

As shown in FIGS. 1 to 5, a non-ferrous metal sorter 10 according to an embodiment of the present invention is rotatably mounted at a central portion of a gantry 11 via bearings 12 and 13. It has a drum 14, a high-speed rotating magnetic body 15 provided in the rotating drum 14, and a vibrating feeder 16, which is an example of a feeder for dropping a raw material onto the rotating drum 14. Hereinafter, these will be described in detail.

[0007] As shown in FIGS.
Is a supporting cylinder 17 made of reinforced plastic (an example of an insulator), a number of wear-resistant ceramic plates 18 laid around the supporting cylinder 17, metal side frames 19 and 20 provided on both sides of the supporting cylinder 17, and have. A V-pulley 21 is provided at an end of the side frame 19, and is connected to a V-pulley 23 attached to an output shaft of a deceleration motor 22 by a double V-belt 24. The drum 14 rotates counterclockwise at a low speed in FIG. Large holes 25 and 26 are provided in the center of the side frames 19 and 20, and the high-speed rotating magnetic body 15 disposed in the rotating drum 14 is provided.
Of the rotary shaft 27 is inserted. Both sides of the rotating shaft 27 are supported by bearings 12 and 13 via bearings 28 and 29. The bearings 12 and 13 are provided with large-diameter bearings 30 and 31 respectively on the inner side in the axial direction, and rotatably support the support cylinders 32 and 33 provided on the inner side in the radial direction of the side frames 19 and 20. ing. As a result, the rotating drum 14 is rotatably supported by the gantry 11 via the bearings 12 and 13. The wear-resistant ceramic plate 18 is made of a relatively thin plate such as alumina or zirconium, and is adhered to the surface of the rotating drum 14 with an adhesive.

The rotating shaft 27 attached to the bearings 12 and 13 via the bearings 28 and 29 is mounted on the side frame 1.
It is eccentrically attached to the support cylinders 32 and 33 of the ninth and twentieth. As a result, the high-speed rotating magnetic pole body 15 is positioned with a small gap at the upper inside of the rotating drum 14 and a large gap at the lower inside of the rotating drum 14. As shown in FIGS. 4 and 5, the high-speed rotating magnetic body 15 includes a rotating body including a rotating shaft 27 and a cylindrical body 36 attached thereto via side plates 34 and 35, and a rotating body around the cylindrical body 36. And a plurality of magnetic pole body groups 37 provided. The cylindrical body 36 is made of a magnetic material and acts as a yoke. A plurality of axially parallel grooves 38 are formed around the cylindrical body 36, and the permanent magnets 3 forming a magnetic pole body group 37 thereat.
Nine bases are fitted. The front end of the permanent magnet 39 is chamfered in the circumferential direction, and the circumferentially projecting piece of the mounting bracket 40 that covers the upper shoulder of the permanent magnet 39 on both sides adjacent in the circumferential direction engages, so that the mounting bracket 40 Is screwed to the cylinder 36 by a bolt 41, and the permanent magnet 39 is
It is fixed to. The adjacent magnets 39 have different polarities in the radial direction. As shown in FIG. 2, a V-pulley 4 is attached to the end of the rotating shaft 27 of the high-speed rotating magnetic body 15 on the bearing 13 side.
2 is connected by a V-belt 45 to a V-pulley 44 attached to an output shaft of a motor 43, so as to rotate the high-speed rotating magnetic body 15 counterclockwise in FIG.

As shown in FIG. 1, the vibration feeder 16 has a trough 47 suspended by four springs 46, and a vibration motor 48 provided diagonally below the trough 47. . The main part of the trough 47 is made of a steel plate.
6 is made of FRP, which is an example of an insulating material. As a result, the rotating magnetic field generated by the high-speed rotating magnetic pole body 15 does not generate an induced current in the front portion 49 of the trough and does not overheat. A hopper 50 (see FIG. 3) is provided on the upper part of the vibrating feeder 16. By operating the vibrating feeder 16 in a state where the raw material is put in the hopper 50, the raw material is gradually conveyed, and Is to be dropped.
On the other hand, a cover is provided on the upper portion of the rotating drum 14 so that the non-ferrous metal such as aluminum that has flew does not fly away. Are sequentially provided in front of the rotary drum 14. An intermediate portion between the dust hopper 51 and the non-ferrous metal collection hopper 52 is provided with a separation plate 53 that can be rotated and fixed.

Therefore, in the non-ferrous metal sorter 10, while the high-speed rotating magnetic body 15 and the rotating drum 14 are driven to rotate in a predetermined direction, the raw material from which the magnetic material such as iron has been removed is put into the hopper 50, When the motor 48 is operated, the raw material is gradually cut out from the hopper 50 and falls on the rotating drum 14. Inside the rotating drum 14,
Since the high-speed rotating magnetic body 15 is rotating at high speed, the non-ferrous metal in the raw material is flipped forward by the magnetic field, flies, and falls into the non-ferrous metal hopper 52. Dust other than the non-ferrous metal in the raw material is not affected by the magnetic field, and thus falls as it is and falls into the dust hopper 51. This makes it possible to recover non-ferrous metals in the raw material. In this case, since the tip of the vibration feeder 16 is made of FRP, it is not affected by the rotating magnetic field. The rotating drum 1
Since the wear-resistant ceramic plate 18 is adhered to the surface of the substrate 4, there is almost no wear due to falling of the raw material, and a long life is obtained. In addition, since the high-speed rotating magnetic body 15 is mounted eccentrically upward with respect to the rotating drum 14,
Even if a magnetic substance such as iron is mixed in the raw material, it falls at a lower portion where the magnetic field is weak.

Next, when a thick wear-resistant ceramic plate 18 is adhered to the surface of the rotating drum 14, the distance of the inner high-speed rotating magnetic body 15 from the magnetic pole group 37 is also increased above the rotating drum 14. As the distance increases, a strong rotating magnetic field is not generated on the surface of the rotating drum 14. Therefore, a structure of a high-speed rotating magnetic body that generates a strong magnetic field on the surface of the rotating drum 14 will be described with reference to FIGS.

In a first modification of the high-speed rotating magnetic pole body shown in FIG. 6, permanent magnets 55 and 56 are arranged on the peripheral surface of the cylindrical body 36 at predetermined intervals with their magnetic poles directed in the radial direction.
The permanent magnets 55 and 56 form a pair, and the middle part (gap)
Is provided with a horizontal magnet 57 on the peripheral surface of the rotating body.
The horizontal magnets 57 are permanent magnets 55 and 56 having different polarities.
Of the permanent magnets 55 and 56 and the magnetic poles of the horizontal magnets 57 arranged in the middle of the permanent magnets 55 and 56 are arranged in series. , Thereby increasing the magnetic field generated outside the permanent magnets 55 and 56 in the radial direction. In addition, one magnetic pole body 58 is constituted by the permanent magnet 55, the horizontal magnet 57 and the permanent magnet 56 connected in series,
The polarities of the adjacent magnetic pole bodies 58 are reversed.
The intensity of the magnetic field appearing on the surface of the rotating drum 14 in this case is shown by the line a in FIG. 8, but as shown in FIG. 8, it is larger than that in the case of the magnet arrangement shown in FIG. 4 (shown by the line c). A magnetic field of magnetic flux density can be generated.

FIG. 7 shows a second modification in which one magnetic pole body 59 has three poles.
The pole faces radially outward, and the north pole of the central permanent magnet 55 faces radially inward. And the horizontal magnet 57
Are connected in series in a direction to increase the magnetomotive force of the adjacent permanent magnets 55 and 56. The result of measuring the magnetic flux density outside the rotating drum 14 having the magnetic pole body 59 thus configured is
This is shown in FIG. 8 by the line b. In addition, a permanent magnet is arranged by providing a gap on the entire peripheral surface of the cylindrical body 36, the direction of the radial direction of the adjacent permanent magnet is made to be a different polarity, and a horizontal magnet is placed between these permanent magnets, and the polarity thereof is connected in series. FIG. 8 shows the magnetic flux density on the surface of the rotating drum 14 in the case where they are arranged so as to be d. From the above results, so that the magnetomotive forces of adjacent magnets are in series,
A stronger magnetic flux density can be generated on the surface of the rotating drum 14 when the transverse magnet is placed. In addition, the horizontal magnets 5 composed of the permanent magnets 55 and 56 and the permanent magnets
7 may be attached to the cylinder 36 by attaching a mounting hole to the magnet itself, or by attaching a presser made of a non-magnetic material prepared in advance to the cylinder 36.

In the above embodiment, a wear-resistant ceramic plate is adhered to the surface of the rotary drum, but a rubber plate may be formed in a cylindrical shape and mounted. Rubber does not have strength but has high abrasion resistance similar to that of automobile tires, so that it can be used satisfactorily as long as it is a raw material that does not easily generate impact force or scratches. The type of the permanent magnet is not particularly limited, but it is preferable to use a strong magnet such as neodymium.

[0015]

The non-ferrous metal sorter according to claims 1 to 3,
As is clear from the above description, a large number of abrasion-resistant ceramic plates or rubber plates are adhered to the periphery of the rotary drum, so that wear is small and the life of the rotary drum is significantly extended. In particular, in the non-ferrous metal sorter according to claim 2,
Since the leading end of the feeder is made of an insulating material, it can be used sufficiently without overheating even if a strong rotating magnetic field is generated on the surface of the rotating drum. In the non-ferrous metal sorter according to the third aspect, in each magnetic pole body group, a plurality of magnets are arranged with a gap therebetween so that adjacent magnetic poles have different polarities, and the magnets are arranged with their polarities directed in the radial direction. In the gap between the plurality of magnets, a horizontal magnet that increases the magnetic force of the adjacent magnet is provided on the peripheral surface of the rotating body, so that the strength of the magnetic field generated on the surface of the rotating drum increases, and a smaller non-ferrous Even metals can be sorted.

[Brief description of the drawings]

FIG. 1 is a front view of a non-ferrous metal sorter according to an embodiment of the present invention.

FIG. 2 is the same plane.

FIG. 3 is a side view of the same.

FIG. 4 is a partially enlarged sectional view of a rotary drum.

FIG. 5 is a sectional view of a rotating drum.

FIG. 6 is a partial cross-sectional view of a high-speed rotating magnetic body according to a modification.

FIG. 7 is a partial sectional view of a high-speed rotating magnetic pole body according to a modification.

FIG. 8 is a graph showing a magnetic flux density around a rotating drum.

[Explanation of symbols]

10: Non-ferrous metal sorter, 11: Stand, 12, 13: Bearing, 14: Rotating drum, 15: High-speed rotating magnetic pole body, 16:
Vibration feeder, 17: support cylinder, 18: wear-resistant ceramic plate, 19, 20: side frame, 21: V pulley, 2
2: deceleration motor, 23: V pulley, 24: V belt, 2
5, 26: hole, 27: rotating shaft, 28 to 31: bearing, 32, 33: support cylinder, 34, 35: side plate, 36: cylinder, 37: magnetic pole group, 38: groove, 39: permanent magnet, 4
0: mounting bracket, 41: bolt, 42: V pulley, 4
3: motor, 44: V pulley, 45: V belt, 46:
Spring, 47: Trough, 48: Vibration motor, 49:
Tip, 50: hopper, 51: dust hopper, 52:
Non-ferrous metal recovery hopper, 53: separation plate, 55, 56: permanent magnet, 57: horizontal magnet, 58: magnetic pole body, 59: magnetic pole body

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-51-44371 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B03C 1/00-1/32

Claims (3)

(57) [Claims] 1. A rotating drum made of an insulator driven at a low speed, a feeder for supplying a raw material to an upper portion of the rotating drum, and a high-speed rotating magnetic pole inside the rotating drum and eccentrically mounted on the upper side. A non-ferrous metal sorter having a body, wherein a number of wear-resistant ceramic plates or rubber plates are stuck around the rotary drum. 2. The non-ferrous metal sorter according to claim 1, wherein the leading end of the feeder is made of an insulating material. 3. The non-ferrous metal sorter according to claim 1, wherein the high-speed rotating magnetic body is composed of a rotating body and a plurality of magnetic body groups provided around the rotating body. In the magnetic pole body group, a plurality of magnets are arranged with a gap so that their polarities are oriented in the radial direction so that adjacent magnetic poles are different polarities.Moreover, the magnetic force of the adjacent magnet is provided in the gap between the plurality of magnets. A non-ferrous metal sorter, wherein an increasing number of transverse magnets are provided on a peripheral surface of the rotating body.