JPS63352Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device that efficiently separates non-magnetic conductive materials such as aluminum and copper from materials from which magnetic materials have been removed in advance, and in particular, the present invention relates to a device that efficiently separates non-magnetic conductive materials such as aluminum and copper from materials from which magnetic materials have been removed. The present invention relates to a non-magnetic conductive material separation device that efficiently separates non-magnetic conductive materials having shapes that are easy to rotate.

As one of the conventional devices for separating a non-magnetic conductive material from a material from which magnetic material has been removed, the inventor of the present application rotates in one direction a cylindrical body into which the material from which the magnetic material has been removed is charged. It has been proposed to apply a rotating magnetic field in a direction opposite to that of the cylindrical body, which is a rotating body, to a nonmagnetic conductive material in a cylindrical body.

In the above device, among the materials put into the cylindrical body, those other than the non-magnetic conductive material, that is, the non-conductive materials, receive an acting force in the direction of rotation due to the rotation of the cylindrical body, and The non-magnetic conductive material receives an action force in the opposite direction that overcomes the action force due to the electromagnetic action force of the eddy current generated by the rotating magnetic field. At this time, since the rotating magnetic field is rotated independently of the cylindrical body, the rotating magnetic field can be rotated at high speed without rotating the cylindrical body at high speed. Therefore, in order to separate the non-magnetic conductive material from the material, a strong opposing force due to an electromagnetic force is applied to the non-magnetic conductive material without applying a strong centrifugal force to the material in the cylindrical body. I can do it.

By the way, in order to increase the separation efficiency of non-magnetic non-conductive materials in the conventional device, it is necessary to ensure that the non-magnetic non-conductive materials are directed toward the rotation of the cylinder, and the non-magnetic conductive materials are directed in the opposite direction. It is.
However, the non-magnetic non-conductive material and the non-magnetic conductive material that are the input materials are not subjected to magnetic attraction force and are therefore not attracted to the inner surface of the cylindrical body, so they are likely to rotate in the input material. If there is a shaped material and it touches the bottom of the cylinder, it will rotate on the bottom of the cylinder.
If this rotating material is a non-magnetic non-conductive material,
The non-magnetic non-conductive material is not oriented in the direction of rotation of the cylindrical body regardless of the rotation of the cylindrical body, and if the rotating material is a non-magnetic conductive material, the non-magnetic conductive material receives the electromagnetic force. However, it is never directed in the opposite direction. Therefore, if such a material is easily rotated, it becomes difficult to increase the separation efficiency of the non-magnetic, non-conductive material. especially,
The material to be separated often contains a non-magnetic conductive material in a shape that is easy to rotate, such as a cylindrical aluminum iron that has not been sufficiently pressed and deformed. Since the inner diameter of the cylindrical body of such an aluminum iron is uniform in its longitudinal direction, its posture can be easily changed by rotation of the cylindrical body so that it is aligned with the cylindrical body. Even if a force in the opposite direction due to the electromagnetic force acts, this force is wasted as the aluminum iron rotates at that position, that is, at the bottom of the cylindrical body. For this reason, it has been difficult to reliably separate the non-magnetic conductive material, which has a shape that is easy to rotate, from the non-conductive material.

The purpose of the present invention is to reliably separate non-magnetic, non-conductive materials from non-magnetic, conductive materials by preventing input materials that have a shape that is easy to rotate from coming into contact with the bottom of the rotating body and rotating on its own axis. This aims to improve the separation efficiency of the non-magnetic conductive material.

The present invention is a cylindrical rotating body made of a non-magnetic material that is disposed laterally and driven and rotated in one direction with its longitudinal central axis as the rotational axis. and a non-magnetic conductive material in the rotating body, substantially coaxially with the rotating body and opposite to the rotating direction of the rotating body, in order to apply an electromagnetic force in a direction opposite to the rotating direction of the rotating body. and means for generating a rotating magnetic field that rotates in the direction of the rotating body. Changing the material to a position that makes it difficult to rotate, the non-magnetic non-conductive material is reliably moved in the rotation direction of the rotating body, and the non-magnetic conductive material is surely moved in the opposite direction to the rotation direction of the rotating body, thereby In order to improve the separation efficiency of the non-magnetic conductive material, the inner diameter of the rotating body gradually increases from one end to the other end.

The features of the invention will become clearer from the following description of the illustrated embodiment.

As shown in FIGS. 1 and 2, a separation device 10 according to the present invention includes a cylindrical body 12 made of a non-magnetic material with both ends open, a means 14 for generating a rotating magnetic field, and a rotatable cylindrical body 12. and a frame 16 for supporting.

The frame 16 is arranged at an angle, on which a pair of driving rollers 20 and a pair of driven rollers 22 are mounted, each pair being rotatably supported by a bracket 18 at a distance from each other.

The cylindrical body 12 is a cylindrical body of equal thickness that has a truncated conical shape as a whole and whose generatrix is a straight line having an angle with respect to one central axis. Therefore, the inner peripheral surface 2 of the cylinder 12
3 is a curved surface in the shape of a truncated cone, and the inner diameter of the cylinder 12 gradually increases from one end 12a to the other end 12b. Since this cylinder 12 has the same thickness,
Although its outer diameter also increases as the inner diameter gradually increases, a cylindrical body with a uniform outer diameter may be used instead. However, the illustrated example is preferable in order to effectively cause the magnetism of the rotating magnetic field, which will be described later, to act inside the cylinder.

A pair of annular guide portions 2 each having a uniform outer diameter is provided on the outer peripheral surface near both ends of the cylinder body 12.
4 are provided, and the cylinder 12 is placed laterally on both rollers 20, 22 in the guide section 24. As a result, the cylindrical body 12 is rotatable about the central axis in the longitudinal direction, and the generatrix A that defines the bottom of the inner circumferential surface 23 of the cylindrical body 12 is closer to the one end 12a side of the cylindrical body 12. It is supported so as to form an angle of depression of θ with respect to the horizontal plane.

The rotational force of the motor 30 is transmitted to the pivot shafts 26 of the pair of drive rollers 20 via a chain 34 that runs around a sprocket 28 fixed to the pivot shafts and a drive motor 30 provided on the inclined frame 16. As a result, the cylindrical body 12 is rotated clockwise as viewed in FIG.

The means 14 for generating the rotating magnetic field includes an outer ring 36 having an inner diameter larger than the outer diameter of the cylinder 12, which is a rotating body, and surrounding approximately the center of the cylinder, and an inner circumferential surface of the outer ring. A large number of magnets 38, 4 buried in
0.

An annular guide portion 42 is provided on the outer peripheral surface of the outer ring 36. The annular guide portion is connected to the inclined frame 1
The outer ring 36 is placed on a pair of driving rollers 46 supported on the cylinder 12 via a bracket 44, so that the outer ring 36 is spaced from and coaxially with the cylinder 12. It is rotatably supported about an axis that coincides with the rotation axis. The pivot shaft 48 of the drive roller 46 includes:
The rotational force of the motor 52 is transmitted through a chain 56 that revolves around a sprocket 50 fixed to the pivot shaft and a sprocket 54 of a drive motor 52 provided on the inclined frame 16, whereby the outer ring 36 is rotated around the cylinder. The body 12 is driven and rotated in a direction opposite to the direction of rotation of the body 12, that is, in a counterclockwise direction as viewed in FIG.

A large number of magnets 38 embedded in the outer ring 36,
40, as shown in FIG. 2, the magnetic pole surfaces surrounding the cylindrical body 12 at intervals and facing the outer peripheral surface of the cylindrical body alternately become different magnetic poles at intervals. are arranged in Further, as shown in FIG. 1, each magnet 38, 40 extends substantially parallel to the axis of rotation of the cylinder 12, that is, the axis of rotation of the outer ring 36, and its magnetic pole face is
Each has a taper along the outer peripheral surface of the cylindrical body 12 to define a conical surface for receiving the cylindrical body 12 .

Although FIG. 1 shows an example in which each of the magnets 38 and 40 has the same width in the longitudinal direction, the width can also be gradually increased toward the other end 12b of the cylindrical body 12. It is needless to say that even when the outer diameter of the cylindrical body 12 is constant or when the outer diameter of the cylindrical body 12 gradually increases as shown in the figure, it is not necessarily necessary to taper the magnetic pole faces of the magnets 38 and 40. In order to effectively utilize the magnetism of each magnet 38, 40, it is preferable that the magnetic pole faces of each magnet 38, 40 are made equal and as close to the outer peripheral surface of the cylinder 12 as possible, as shown in the drawing.

As the outer ring 36 rotates, each magnet 38, 4
0 rotation, a rotating magnetic field is generated in the center of the cylinder 12. This rotating magnetic field induces eddy currents in the non-magnetic conductive material within the cylinder, thereby exerting an electromagnetic force F on the non-magnetic conductive material. When the magnets 38 and 40 are substantially parallel to the rotational axis of the outer ring 36 as described above, the direction of this electromagnetic force F is only the lateral component along the rotational direction of the rotating magnetic field. , the magnets 38, 40
The magnets 3 are arranged such that their longitudinal axes make angles α and α′ with respect to the axis of rotation of the outer ring 36, as shown in FIGS. 3a and 3b, respectively.
8 and 40, the electromagnetic force F can include a vertical component toward one end 12a or the other end 12b of the cylinder 12.

A chute 60 for continuously charging the material 58 from which the magnetic material has been removed in advance into the cylinder body 12 is directed toward an opening on the side of one end 12a of the cylinder body 12, which is a rotating body. Further, a separation plate 62 is arranged at the opening on the other end 12b side of the cylinder, and extends toward the center of the cylinder 12 at a position slightly offset from the lower edge in the rotational direction of the outer ring 36. . The separation plate is fixed on the inclined frame 16 with its bottom surface maintaining a small distance from the cylinder 12.

The material 58 introduced into the cylindrical body 12 from the chute 60 is guided from one end 12a toward the other end 12b along the bottom of the cylindrical body 12, which rotates due to its own weight. Of the 58 materials, 6 non-conductive materials are represented by waste paper, pieces of wood, etc.
4 and a non-magnetic conductive material 66 typified by aluminum, copper, etc., when an object with a shape that is easily rotated such as a cylinder comes into contact with the bottom of the cylinder 12, the inner circumferential surface 23 of the rotating cylinder 12 Due to the difference in circumferential speed of the cylindrical body 12, the position of the cylindrical body 12 is changed so that the central axis thereof is at an angle with respect to the longitudinal direction of the cylindrical body 12.

Therefore, even if the non-conductive material 64 that is not subjected to the acting force of the rotating magnetic field has a shape that is easy to rotate, it is prevented from rotating about its central axis, as shown in FIG. As the cylindrical body 12 rotates, it is oriented in the direction of rotation of the cylindrical body 12 along its bottom, thereby ensuring that it is biased toward the rotational direction of the cylindrical body 12 sequentially from one side of the separating plate 62. be discharged.

Further, the non-magnetic conductive material 66 receives an action force in a direction opposite to the rotational direction of the cylindrical body 12 due to the electromagnetic action force of the rotating magnetic field. Even if the non-magnetic conductive material 66 that receives this acting force has a shape that is easy to rotate, such as a cylindrical aluminum iron that has not been sufficiently pressed and deformed, the non-magnetic conductive material 66
4, the non-conductive material does not rotate due to the acting force and is reliably oriented in the opposite direction to the rotational direction of the cylinder 12. As a result, the non-conductive material 64 and are sequentially discharged from the other side of the separation plate 62 and collected.

In the above, an example was shown in which the input material 58 is sequentially discharged from the other end of the cylinder 12 by its own weight by tilting the generatrix A of the cylinder 12. By tilting each of the magnets 38 and 40 as shown in FIG.
The rate of discharge from b can be increased.

Alternatively, the magnets 38 and 40 may be parallel to the rotational axis of the outer ring 36 and the generatrix A of the cylinder 12 may be aligned with a horizontal plane, but in this case,
Since the non-conductive material 64 and the non-magnetic conductive material 66 are accumulated in a separated state in the cylindrical body 12, which is a rotating body, it is necessary to periodically collect them.

According to the present invention, as described above, by gradually increasing the inner diameter of the cylindrical rotating body into which the material is fed in its longitudinal direction, even if the material fed is of a shape that is easy to rotate, the rotation It is possible to change the posture to a position that is difficult to rotate due to the difference in circumferential speed of the inner circumferential surface of the body. Therefore, the non-magnetic non-conductive material of the input materials is reliably moved in the rotation direction of the rotating body,
On the other hand, even if a non-magnetic conductive material has a shape that is easy to rotate, such as an aluminum iron that has not been sufficiently pressed and deformed, the rotation of the rotating body is prevented because it is prevented from rotating around its central axis. The electromagnetic action force of the rotating magnetic field centered on the axis can be effectively directed to a separation force, and the non-magnetic conductive material is moved in a direction opposite to the rotational direction of the rotating body, that is, opposite to the moving direction of the non-magnetic non-conductive material. The non-magnetic material can be reliably moved in the direction of the material, and the non-magnetic material can be efficiently separated and recovered from the material.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of the separation device according to the present invention, FIG. 2 is a cross-sectional view taken along the line shown in FIG. 1, and FIG. 3a and 3b are partial cross-sectional views showing other embodiments of the rotating magnetic field generating means shown in FIG. 1, respectively. 12... Rotating body, 14... Rotating magnetic field generating means,
23... Inner peripheral surface of the rotating body, A... Generatrix.

Claims (1)

[Claims for Utility Model Registration] (1) A cylindrical rotating body made of a non-magnetic material arranged laterally and driven and rotated in one direction with its longitudinal central axis as the rotation axis, with the magnetic material removed in advance. In order to apply an electromagnetic force in a direction opposite to the rotational direction of the rotating body to the rotating body into which the material is introduced and the non-magnetic conductive material in the rotating body, the rotating body is substantially coaxial with the rotating body. means for generating a rotating magnetic field that rotates in a direction opposite to the rotational direction of the rotating body, and for preventing input material having a shape that is easy to rotate from coming into contact with the bottom of the rotating body and rotating on the bottom. changing the material to a posture that makes it difficult to rotate, reliably moving the non-magnetic non-conductive material in the rotational direction of the rotating body, and reliably moving the non-magnetic conductive material in the opposite direction to the rotating direction of the rotating body,
A non-magnetic conductive material separation device characterized in that the inner diameter of the rotating body gradually increases from one end to the other end in order to increase the separation efficiency of the non-magnetic conductive material. (2) The non-magnetic conductive material separation according to claim 1, wherein the inner circumferential surface of the rotating body is a curved surface having a generatrix of a straight line at an angle to the rotational axis of the rotating body. Device. (3) The non-magnetic conductive material separating device according to claim (2), wherein the generatrix defining the bottom of the inner circumferential surface of the rotating body forms an angle with respect to a horizontal plane. (4) The rotating body is a cylindrical body with both ends open and exhibiting a truncated conical shape as a whole.
The nonmagnetic conductive material separation device according to item (1), item (2), or item (3).