JPH06254431A - Belt conveyor for nonmagnetic metal separation - Google Patents

Abstract

PURPOSE:To eliminate the necessity of providing a large capacity motor for driving a driving roller even when a large amount of iron material is contained in urban life refuses. CONSTITUTION:A magnetic material separator 34 is disposed close to the right above the upstream side on an upper traveling section of a belt 49 provided between a driving roller 37 and a cylinder 38.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a non-magnetic metal separation belt conveyor suitable for use in separating aluminum debris from, for example, municipal solid waste.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional aluminum separating belt conveyor. This belt conveyor is indicated by 1 as a whole, and the belt 4 is connected to a driving roller 5 at one end and to the other. The end portion is wound around a non-metallic (for example, plastic) cylindrical body 8. The driving roller 5 is driven by the electric motor 6 via the belt 7 at a predetermined rotation speed in the arrow direction. Therefore, the cylindrical body 8 as the driven roller rotates in the direction indicated by the arrow A at a predetermined rotation speed. The cylindrical body 8 has a rare earth magnet rotating body 9 concentrically built therein, which has S poles 10 and N alternately at its outer peripheral edge.
The pole 11 is magnetized as shown in the drawing, and is configured to rotate around a rotation shaft 14 by a motor 12 via a belt 13 in a direction of an arrow B at a predetermined rotation speed. The cylindrical body 8 and the rare earth magnet rotating body 9 are coaxial with each other, but are rotated around an axis separated from the axis 14. The drive roller 5, that is, the cylindrical body 8
The rotation speed of the rotating body 9 is set to be sufficiently higher than the rotation speed of the. Reference numeral 22 is a guide roller.

Below the cylindrical body 8 is disposed a waste container 3 for separating and discharging, which is provided with partition walls 15a and 15b. From the right side in the figure, the aluminum recovery space 16 , the normal waste recovery space 17 and the iron scrap recovery space 18
Is defined.

The conventional example is constructed as described above, but it is assumed that municipal waste is now supplied from above one end of the belt 4. These are more densely present, but are shown scatteredly in the figure. That is, the belt 4
In the upper traveling part of the, for example, aluminum can m, iron scrap f,
When the paper waste g is transferred to the right in the figure and reaches the uppermost position of the cylindrical body 8, the high speed rotation of the rotating body 9 contained therein causes the N pole and the S pole provided on the outer peripheral edge thereof to the belt 4. On the other hand, since the positions of the N pole and the S pole are relatively changed at a high speed, an AC magnetic field is generated, which induces an eddy current in the aluminum scrap m, and the magnetic flux due to the eddy current and the rotating body 9 rotating at a high speed. Due to the interaction with the magnetic fluxes from the magnetic poles N and S, the aluminum scrap m receives a repulsive force, is drawn from the uppermost end of the cylindrical body 8 along the locus a, and is discharged into the aluminum scrap storage space 16 .

Further, the paper waste g is free from the influence of the magnetic flux of the rotating body 9 rotating at a high speed, falls freely from the belt 4 wound around the cylindrical body 8, passes through the locus of b, and receives the ordinary waste waste. It is discharged into the space 17 . Then scrap f is adsorbed on the belt 4 while strongly being attracted to the magnetic pole 10 or 11 of the rotating body 9, most belt 4 longer residence time on, to the iron scrap collection space 18 through the trajectory indicated by c Is discharged.

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

In FIG. 6, the length of the upper running portion of the belt 4, that is, the distance between the drive roller 5 and the cylindrical body 8 is shown to be much shorter than it actually is, but it is actually longer, and A large amount of municipal waste is placed on the upper traveling section.
Although not shown in FIG. 6, a hopper for storing a large amount of municipal waste is disposed above the drive roller 5, and when the drive roller 5 is driven, the municipal waste is sequentially cut out from the hopper and the belt 4. The upper traveling part is conveyed to the right in FIG. 6 and is subjected to the separating action as described above. However, in some cases, a large amount of magnetic material such as iron is contained in the municipal solid waste. There is a case. Iron is very heavy, and thus it becomes a large load on the belt 4, and the capacity of the motor 6 that drives the drive roller 5 must be sufficiently large. If this is insufficient, slipping will occur on the cylinder body 8. The separation effect of aluminum scrap disappears or becomes very weak.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a large amount of municipal waste is placed on a belt, in which wastes made of magnetic material, for example, iron material occupy the majority. It is an object of the present invention to provide a non-magnetic metal separating belt conveyor that can receive the original sorting action without increasing the capacity of the motor that drives the drive roller even in such a case.

[0009]

[Means for Solving the Problems] The above object is to provide a belt wound around a drive roller at one end and a non-metallic cylinder at the other end, and a belt incorporated in the cylinder and having peripheral portions alternated. And a rotating magnet magnetized to have an N pole and an S pole. The rotating magnet is rotated in the same direction at a rotation speed higher than the rotation speed of the cylindrical body so that the rotation magnet is rotated from the other end of the belt. In a non-magnetic metal separating belt conveyor for separating a magnetic metal dust component by discharging it with a trajectory different from that of other dust components, a non-magnetic metal separating belt conveyor is provided between the driving roller and the cylindrical body, and the upper traveling portion of the belt. A magnetic separator is provided immediately above the upstream side, and among the waste conveyed from the upstream side, the dust component made of a magnetic material is separated by the magnetic separator and is removed to the outside. Non-magnetic metal separation belt conveyor, by It is achieved.

[0010]

[Function] While a large amount of municipal waste is being carried on the belt toward the cylindrical body, almost all of the iron-made dust is sucked upward by the upper magnetic separator, and is adsorbed by this dust. It is discharged toward you. Therefore, on the downstream side of this magnetic separator, iron, which is heavy waste, is removed from the municipal solid waste on the belt, so the load becomes extremely small, and as a result, the overall load of the belt conveyor is greater than before. Therefore, the capacity of the motor for driving the drive roller can be reduced to a small value. Further, since the capacity of the motor for rotating the driving roller and the driven roller is sufficient, the belt can be prevented from slipping around the cylindrical body, and the original sorting operation can be reliably performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A non-magnetic metal separating belt conveyor device according to an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the apparatus is designated generally as 31, which is primarily a non-magnetic metal separation belt conveyor 3.
2 and a magnetic separator 34 disposed below the discharge end and disposed immediately above and immediately upstream of the dust container 33 and the non-magnetic metal separating belt conveyor 32.

The entire non-magnetic metal separating belt conveyor 32 is covered with a casing 35, and a municipal waste supply port 36 is provided on the upper wall portion of the left end portion thereof. A drive roller 37 is disposed immediately below this, and is driven by an electric motor 40 via a belt 41 in the direction of the arrow. Further, a cylindrical body 38 made of synthetic resin is provided on the right side in FIG. 1, a guide roller 41 located below the cylindrical body 38, and a guide roller 45 on the left side thereof.
Guided by 46, the belt 49 is wound in a loop shape as illustrated. Further, the upper running portion of the belt 49 is supported by the guide rollers 50 and 51. The inner guide roller 50 is a so-called vibrating roller,
Its axis extends perpendicular to the plane of the drawing,
Four protrusions 50a extending in the axial direction are formed on the outer peripheral surface of the roller at equal angular intervals. Since the belt 49 is pressed against this, the belt 49 is slightly pushed up at this portion as shown in the figure.

Inside the cylindrical body 38, there is concentrically provided a rotating body 39 concentrically magnetized alternately with N pole, S pole, N pole, ... It is supported by a structure, which is driven by the electric motor 40 via the belt 43 at a rotational speed much higher than that of the drive roller 37.

At the left end of the belt 49, a pair of tension devices 47a and 47b are provided, and the handle is used to manually adjust the tension of the belt 49 before starting driving the device.

The non-magnetic metal separating belt conveyor 32 is constructed as described above, and the dust container 33 is arranged below the discharge end and covered with a casing.
Aluminum scrap hopper 52, normal waste hopper 53
And a magnetic material storage hopper portion 54, and well-known branch rollers 57 and 58 are disposed immediately above partition wall members 55 and 56 that define the hopper portions 54, and they always rotate in the direction indicated by the arrow. ing.

According to the present invention, a magnetic separator 34 is provided immediately upstream of and immediately above the non-magnetic metal separation belt conveyor 32, which will now be described in detail with particular reference to FIGS. explain.

In the magnetic separator 34, the driving roller 64 and the driven roller 63 are configured to rotate counterclockwise in FIG. 4 around the shafts of the bearing members 74a and 74b attached to the frame 61. 64 is a belt 6 by an electric motor 65 attached to the frame 61.
Driven via 6. Guide rollers 72 and 73 are further provided on the upper wall of the frame 61, and the belt 62 is wound around them in a loop shape as shown in FIG. A pair of tension devices 6 are provided on the driven roller 63 side.
7a and 67b are provided, and the tension of the belt 62 is adjusted by this before the driving of the apparatus is started.

An electromagnet device 71 is provided between the driving roller 64 and the driven roller 63 so as to be in sliding contact with the lower running portion of the belt 62, and an electromagnet including a coil and a core is incorporated in the casing. A direct current is supplied to the coil from the outside through the lead wire 70 via the terminal box 69. The belt 73 is integrally formed with rib portions 62a that reinforce the belt 73 at equal angular intervals. A hopper portion 68 for accommodating the iron scraps f made of a magnetic material sucked from the non-magnetic metal separating belt conveyor 62 is provided immediately below the drive roller 64.

The non-magnetic metal separating belt conveyor according to the embodiment of the present invention is constructed as described above, and its operation will be described below.

When municipal waste is supplied from a hopper (not shown) provided above the municipal waste supply port 36, the belt 49 is driven in the direction of the arrow by the drive of the driving roller 37. However, the municipal waste placed on this is transported to the right in FIG. When reaching the lower part of the magnetic separator 34, which is disposed immediately above and on the upstream side, the magnetic separator 34 is considered to contain dust made of magnetic material, such as iron scrap f, in the municipal waste. Due to the magnetic attraction force of the electromagnet device 71, it is attracted to the lower traveling portion of the belt 62, adsorbed by this and conveyed to the right in FIG. 4, and is separated from the belt 62 when it reaches outside the magnetic force region of the electromagnet device 71. Then, it is discharged into the hopper section 68. According to this embodiment, as shown in FIG. 1, the protrusion 50a of the vibrating roller 50 is
The belt 49 in this portion vibrates due to the periodic push-up of. As a result, the municipal solid waste that has been transported up to this point with a large layer thickness is easily moved upward by the above-mentioned vibration even when iron scraps f are present in the lower part of the layer due to the stirring force due to the vibration of this part. The belt 49 of the magnetic separator 34 can be attracted and adsorbed.

As described above, the magnetic separator 34 for the belt 49
Therefore, on the downstream side, scraps made of magnetic material, such as iron scraps f
Has been removed, and is transferred to the cylinder 38 with a small belt load. After all electric motor 4 as a whole
The load applied to 0 is much smaller than the conventional load.

Municipal refuse reaching directly above the cylindrical body 38 is subjected to the same action as in the conventional case, and aluminum scrap m and normal waste scrap g are present, and iron scraps f made of magnetic material, which are still small, are present. And is discharged to the hoppers 52, 53 and 54, respectively. At this time, by rotating the branch rollers 57, 58 located immediately above the partition wall forming members 55, 56, even if adhesive dust is placed on it, it is rotating at all times. Forcibly discharged to the garbage storage space side, if there is no this will accumulate on the partition member,
Even if the non-magnetic metal separating belt conveyor 32 accurately separates the sheet, it is possible to avoid that the sheet is not discharged to the correct storage space.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiment, one magnetic separator 34 is provided on the upstream side of the non-magnetic metal separating belt conveyor 32, but a plurality of magnetic separators may be arranged at a certain interval. Good. In this case, it may be arranged not only on the upstream side but also on the downstream side.

[0026]

As described above, according to the non-magnetic metal separating belt conveyor of the present invention, the driving roller is driven even if a large amount of magnetic material such as iron material is contained in the municipal solid waste. It is not necessary for the electric conductor to have a large capacity, and the belt does not slip around the cylinder. Therefore, the cost is reduced and the original selection action is guaranteed.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a non-magnetic metal separating belt conveyor according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a partially cutaway front view of the same.

FIG. 4 is a side view of a magnetic separator in the same device.

FIG. 5 is a front view of the same magnetic separator.

FIG. 6 is a side view of a conventional non-magnetic metal separating belt conveyor.

[Explanation of symbols]

 32 non-magnetic metal separation belt conveyor 49 belt 34 magnetic separator

Claims (1)

[Claims] 1. A belt that is wound around a drive roller at one end and a non-metallic cylinder at the other end, and is housed in the cylinder.
A peripheral portion is composed of rotating magnets which are alternately magnetized to have N poles and S poles, and the rotating magnets are rotated in the same direction at a rotation speed higher than the rotation speed of the cylindrical body so In a non-magnetic metal separating belt conveyor for separating a non-magnetic metal dust component from the end by discharging it with a trajectory different from that of other components, in the belt between the drive roller and the tubular body. A magnetic separator was installed just above the upstream side of the upper traveling part, and among the waste conveyed from the upstream side, the dust component composed of a magnetic material was separated by the magnetic separator and removed to the outside. Non-magnetic metal separation belt conveyor characterized by.