JPH044054A - Nonmagnetic metal separating belt conveyor - Google Patents

Abstract

PURPOSE:To avoid damaging a belt even if iron scrap of any shapes exist in municipal refuse by disposing a driven roller with the deviation further outward from the other end of the belt below a cylindrical body and winding the belt around this roller as well. CONSTITUTION:This belt conveyor consists of the belt 72 which is wound around a driving roller 11 at one end and is wound around the nonmetallic cylindrical body 60 at the other end and a rotary magnet 7 which is alternately magnetized to N poles 43' and S pole 43 at the circumferential edge. This rotary magnet 7 is rotated in the same direction at the rotating speed higher than the rotating speed of the cylindrical body 60, by which the nonmagnetic metallic refuse component are discharged from the other end of the belt 72 in the locus different from the locus of the refuse components of the other components. The refuse components are thereby separated. The driven roller 73 is disposed with the deviation further outward from the above-mentioned other end below the cylindrical body 60 and the belt 72 is wound around this roller as well. Consequently, the damaging of the belt is prevented even if the refuse such as washers or such iron scrap having edges resembling the shapes thereof exists in the refuse.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a non-magnetic metal separation belt conveyor suitable for use in separating aluminum scrap from municipal waste, for example.

[Prior art and its problems] Fig. 4 shows a conventional aluminum separation belt conveyor.
), and this belt (lO) is wound around a drive roller [11] at one end and around a non-metallic (for example plastic) cylinder (60) at the other end. The drive roller (11) is driven by an electric motor (14) via a belt (15) at a predetermined rotational speed in the direction of the arrow. Therefore, the cylindrical body (60), which is a driven roller, rotates at a predetermined rotational speed in the direction indicated by the arrow A°.

A rare earth magnet rotor (7) is mounted concentrically on the cylindrical body (60).
), which has S poles (
43), is magnetized as shown in the figure with N pole (43°), and this is magnetized by an electric motor (44) around a rotating shaft (46) via a belt (45) at a predetermined rotational speed in the direction of force of arrow B°. It is configured to rotate.

The cylindrical body (60) and the rare earth magnet rotor (7) are coaxial, but are driven to rotate around a separate shaft from the shaft (46). Note that the drive roller (111,
That is, the rotation speed of the rotor (7) is set to be sufficiently higher than the rotation speed of the cylinder (60).

A garbage container V for separating and discharging garbage is arranged below the cylinder (60), and is equipped with a partition wall fz3) [24).
51 (26). Therefore, in the figure, from the right side, an aluminum recovery space, a normal garbage collection space, and an iron scrap collection space are defined.

The conventional example is configured as described above.

It is now assumed that municipal waste is supplied from above one end of the belt (lO). Although these exist at a higher density, they are shown sporadically in the figure. i.e. belt (lO)
For example, aluminum cans m, iron scraps f,
The paper waste g is transferred to the right in the figure, and this is transferred to the cylinder (6
When you reach the top of 0), you will see a rotating magnet (7) built into it.
Due to the high-speed rotation of the belt, the N-pole and S-pole provided on the outer periphery of the belt rapidly change their positions relative to the belt (lO), which generates an alternating magnetic field, which attracts aluminum scraps. An eddy current is induced in m, and the aluminum scrap m receives a repulsive force due to the magnetic flux caused by this eddy current and the magnetic flux of the magnetic poles N and S of the rotor (7) rotating at high speed, and is almost at the top end of the cylinder (60). Draw a trajectory C and reach the aluminum scrap storage space Ω.
It is ejected in a parabola C.

In addition, the paper waste g is not affected by the magnetic flux of the rotating body (7) rotating at high speed (the belt wound around the cylindrical body (60)
10) It falls freely and is discharged along the trajectory d into a normal garbage storage space. Next, iron scrap f is placed in a rotating magnet (7
) while being strongly attracted to the magnetic pole (43) or (43°), it adsorbs to the belt (lO), and its residence time on the belt (lO) is the longest, and it passes through the trajectory shown by e to the iron scrap collection space. It is discharged.

As described above, aluminum scraps, non-metallic garbage scraps such as paper scraps, plastic scraps, etc., and iron scraps are recovered from the municipal garbage scraps.

However, if there are miscellaneous garbage debris within the circumference of the municipal garbage, and for example, it is assumed that a washer W made of iron is included, it will not come off from the belt (lO) at the lowest point of the cylinder body (60), It performs a rotational movement at the position where it is, and does not come off the belt (10) for any length of time, which not only obstructs the subsequent discharge of iron scraps, but also prevents debris of this shape, for example, those with edges. If this happens, the belt (lO) will be torn apart. Further, the entire length of the belt is torn as a result of the rotation of the bell l-(10), and there is a risk that the belt may become unusable. Alternatively, even if the washer W is disc-shaped and does not rotate at a fixed position, some iron scraps may wear out the belt (10) while sticking to the magnetic pole at a fixed position.

[Problem that the invention seeks to solve]

The present invention was made in view of the above problems, and an object of the present invention is to provide a non-magnetic metal separation belt conveyor that does not cause any damage to the belt even if iron scraps of any shape are present in municipal waste. shall be.

[Means for Solving the Problems] The above objects include a belt that is wound around a non-metallic cylinder at one end and a driving row at the other end;
It consists of a rotating magnet whose periphery is magnetized alternately to N and S poles, and the rotating magnet is rotated in the same direction at a rotation speed higher than the rotation speed of the cylindrical body. In a non-magnetic metal separation belt conveyor that separates non-magnetic metal waste from an end by discharging it in a trajectory different from that of other waste components, the belt conveyor separates the non-magnetic metal waste from the other end below the cylindrical body and further outward from the other end. This is achieved by a non-magnetic metal separation belt conveyor, characterized in that a driven roller is disposed with a bias toward the side, and the belt is also wound around the driven roller.

[For production]

A driven roller is disposed below the cylindrical body and is offset further outward from the other end of the belt, and since the belt is also wound around this driven roller, the belt is rotated inside the cylindrical body. By separating from the influence of the magnetic flux of the rotating magnet at a rotation angle of 90° from the top point without being affected by the magnet, for example, iron scraps as magnetic metal trace the same trajectory as paper scraps, etc. The waste is then collected in a regular waste storage space.

Further, aluminum scraps as non-magnetic metal are discharged into the aluminum scrap collection chamber through a trajectory almost similar to the conventional method.

In this case, iron scraps and ordinary garbage such as paper scraps will be collected in the same location, but iron scraps are usually not contained in such large quantities that it is necessary to collect them separately, so there is no similar inconvenience. .

[Example] Hereinafter, a non-magnetic metal separation belt conveyor according to an example of the present invention will be described with reference to the drawings.

Note that portions corresponding to those in FIG. 4 of the conventional example are designated by the same reference numerals, and detailed explanation thereof will be omitted.

In FIG. 1, the aluminum separation belt conveyor of this embodiment is indicated as a whole by (71), and in this embodiment, the belt (72) is replaced by a conventional drive roller (11) and a cylinder (60).
) and is further wound around a driven roller (73). This driven roller (73) is disposed at the lower right side of the cylinder (60) in the drawing, and therefore the belt (72) is arranged in the shape shown in the figure, between the driving roller (11), the cylinder (60) and is wound around a driven roller (73). Also belt (72
) is configured to be close to the magnetic pole (43) (43°) of the rotating magnet (7) in the area of angle α due to the winding shape as described above. That is, they are far apart outside this angle α. At the bottom, a garbage container V° defining a partition wall (got (gel [821) and J] is disposed.

The first embodiment is configured as described above, and its operation will be explained next.

The electric motors (14) and (44) are driven to rotate at the same rotational speed as in the prior art. As a result, the belt (72) runs in the direction shown by the arrow, but the aluminum scraps m move toward the magnetic pole (43) at the outer peripheral edge of the rotating magnet (7) within the range of angle α.
An eddy current is generated by the alternating current magnetic flux at f43°), and the magnetic reaction force causes a horizontal velocity component along a trajectory C° as shown in the figure, and the aluminum waste is guided to the aluminum waste collection space H of the waste container V'. In addition, iron scraps f, paper scraps g, etc. are collected between the cylinder body (60) and the driven roller (73) in the belt (72) as shown in the figure.
In the running area between the two, both are transported over this and discharged into a storage room for iron scrap and other scrap. The first embodiment is configured and operates as described above. Iron scrap f goes through the same conveyance process as normal garbage g and is guided to the same garbage storage chamber J, but directly below the cylindrical body (60). Of course, in areas other than the α angle area from the top point, Bell I-T
72) is located at a distance from the rotating magnet (60), so it does not receive any magnetic flux from the peripheral magnet (43) f43°) of the rotating magnet (7), and therefore passes through the same trajectory to the same storage chamber l. It will be ejected. As shown in FIG. 4 of the conventional example, even if a washer W is mixed in, for example, this is also discharged to l like normal garbage g and corresponds to the lowest point of the cylinder (60) as in the conventional case. There is no possibility that the belt (lO) will not advance because it rotates while being attracted at a certain position on the belt. Therefore, the life of the belt (72) is greatly extended.

FIG. 2 shows a second embodiment of the present invention, and the aluminum separating belt conveyor is indicated by (91) as a whole, and parts corresponding to the embodiment in FIG. 1 are given the same reference numerals. A detailed explanation thereof will be omitted.

In this embodiment, the structure of the rotating magnet (92) is the same as that shown in FIG. 1, but it is arranged eccentrically from the cylinder (60), so that the belt portion corresponding to the lowest point of the cylinder (60) is sufficiently far away from the magnetic pole of the rotating magnet (92), but even in such a case, by arranging the driven roller (73) as shown, the risk of damage by iron chips can be prevented. can be done.

FIG. 3 shows a third embodiment of the present invention, in which the aluminum separation belt conveyor is indicated as a whole by (101), and in this embodiment, the driven roller (102) is disposed directly below the cylindrical body (60). Therefore, the belt (103) is wound around the driven roller (1021) in a manner different from that in the first and second embodiments, but in this embodiment as well, aluminum scraps m, iron scraps f, or ordinary garbage are used. Although the locus of the debris g is different, it is clear that the same effect can be obtained.In addition, in this example, around the cylinder body (60), the rotating magnet (7
), the aluminum separation efficiency is further increased than in the above embodiments.

Although each embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to these (various modifications can be made based on the technical idea of the present invention).

For example, in the above embodiment, only the aluminum separation belt conveyor is shown, but a wind separator is installed above the feed end of the belt conveyor, and a wind separator is installed above the feed end to separate the heavy component waste including aluminum waste and the light component other than this. The collection efficiency may be further increased by separating the waste from the waste.

Furthermore, in the above embodiments, the driven rollers (73) (102)
Although the case where it is arranged diagonally below and directly below the cylinder (60) is shown, it may be arranged in any position as long as it is below and deviated to the cylinder (60) side. .

Further, in the above embodiments, aluminum dust, which accounts for a large proportion of municipal waste, was explained, but any non-magnetic metal can be collected using the same principle. For example, brass and copper scraps can be collected.

[Effects of the Invention] As described above, according to the non-magnetic metal separation belt conveyor of the present invention, even if iron scraps such as washers or similar shaped iron scraps with edges are present, the belt can be removed. Damage can be prevented.

[Brief explanation of drawings]

FIG. 1 is a side view of an aluminum separation belt conveyor according to a first embodiment of the present invention, FIG. 2 is a side view of an aluminum separation belt conveyor according to a second embodiment, and FIG. 3 is a side view of an aluminum separation belt conveyor according to a third embodiment. and FIG. 4 are side views of a conventional aluminum separation belt conveyor. In the figure, belts (73) (102)...... Driven rollers Figure 4

Claims (1)

[Claims] A belt wound around a drive roller at one end and around a non-metallic cylindrical body at the other end, and a rotating magnet built into the cylindrical body and whose peripheral edge is magnetized alternately into north and south poles. The rotary magnet is rotated in the same direction at a rotation speed higher than the rotation speed of the cylindrical body, so that the non-magnetic metal dust component is separated from the other dust components from the other end of the belt. In a non-magnetic metal separation belt conveyor that separates metals by discharging them along a trajectory, a driven roller is disposed below the cylindrical body and is offset further outward from the other end, and the belt is also wound around the driven roller. A non-magnetic metal separation belt conveyor characterized by being made to rotate.