JP3527480B2 - Non-ferrous metal separation equipment - Google Patents

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 separating apparatus for separating non-ferrous metal objects by utilizing repulsive force due to eddy currents generated in metal objects.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Laid-Open No. 10-165838, a cylindrical cover drum having an axial projection on its outer peripheral surface and rotatable about the center of a circle in cross section, or a cylindrical cover drum It has a cylindrical shape, and multiple magnets have an S
Non-ferrous metal separation having a rotor installed such that poles N are alternated and installed in the cover drum at a center position different from the center of the cover drum and rotatably provided with the center as an axis. The device is known.

Such a sorting device is capable of sorting nonferrous metals by type by utilizing eddy currents. When an electric conductor is placed in a magnetic field whose magnetic flux density changes with time, an induced electromotive force is generated inside the metal and an eddy current flows. The magnetic field induced by this eddy current interacts with the original magnetic field to generate a repulsive force. The eddy current depends on the resistance of the metal (the smaller the resistance, the larger the eddy current).
The repulsive force differs depending on the type of metal, and by utilizing this, the metals can be separated according to their type.

FIG. 4 is an explanatory view showing a state of sorting by this type of sorting apparatus. The rotor 3 rotates at high speed around the shaft 5. The cover drum 2 rotates at a low speed (outer peripheral speed v) around the center X thereof. Cover drum 2
An axial projection 4 is formed on the outer peripheral surface of the. The material to be separated is supplied onto the cover drum 2 at a speed V from the supply means (chute plate) 20 at an appropriate rate. It is desirable that v and V have almost the same speed.

The non-ferrous metal having no magnetic attraction causes eddy current to be generated inside by the rotating rotor 3 to generate repulsive force, and is divided into P sections of the receiving box 14 by drawing a locus as shown by arrow A. Since the repulsive force differs depending on the type of non-ferrous metal, it is also possible to further divide the P classification into different types of metal. Dust that does not generate an internal current, such as plastic and wood, is not affected by electromagnetic force and is only acted on by gravity, and is traced as shown by arrow B to be separated into Q sections of the receiving box 14. Since iron, nickel, cobalt, and matesite of stainless steel are magnetically attracted, they are adsorbed by the rotor 3 and stay at the drop position on the cover drum 2, but are pushed by the protrusions 4 of the rotating cover drum 2 to project. Article 4
It rotates with it and gradually moves away from the rotor 3, and eventually the influence of gravity becomes larger than the attraction force of the rotor 3, and the arrow C
Draw a locus like this and it is divided into R sections of the receiving box 14.

The cover drum 2 may be rotated at all times, but when the object to be separated contains a small amount of iron or other magnetically attracting substance,
It may be rotated intermittently.

The cover drum of the conventional sorting apparatus of this type has a double structure in which the inner side is a resin pipe and the outer side is a split ring made of a non-magnetic metal. This is because the outer split ring protects the inner resin pipe from the heat generated by the impact of the object to be separated colliding with the cover drum and the eddy current, and there is a hole in the resin pipe to prevent the magnetic absorbing substance. This is to prevent the rotor from being attached and being damaged. The outer split ring is provided with a large number of holes so that eddy currents are not generated as much as possible.

In the conventional sorting device of this type, the rotation shaft of the rotor and the rotation center of the cover drum are fixed.

[0009]

Since the cover drum of the conventional sorting apparatus is the metal split ring having a large number of holes on the outer side, the magnet of the rotor cannot be strengthened.
Therefore, the efficiency of separation could not be improved.
This is because if the rotor magnet is made stronger, the metal split ring will generate heat. In addition, since the split ring is provided with a large number of holes, there is a problem that the protection of the inner resin pipe is incomplete, and if the inner resin pipe is damaged, the replacement work becomes large. .

Further, in the conventional sorting device, since the rotary shaft of the rotor and the rotation center of the cover drum are fixed, the positional relationship between the rotor and the cover drum cannot be adjusted by the component of the object to be sorted, and the sorting efficiency is improved. Could not be optimized.

According to the present invention, the magnet of the rotor can be strengthened to improve the sorting efficiency, the cover drum can be easily replaced when the cover drum is damaged, and the positional relationship between the rotor and the cover drum can be adjusted. , The task was to optimize the sorting efficiency.

[0012]

SUMMARY OF THE INVENTION The present invention has an outer surface provided with a ridge extending in the axial direction, with the center of the circle in the cross section being the axis center.
A rotatable cylindrical cover drum and a cylindrical or columnar shape, and a plurality of magnets are attached so that the S poles and N poles alternate along the circumferential direction of the outer circumference .
Center of the circle is located at the center is different from the position of the definitive cover drum in the cover drum, the nonferrous metal sorting apparatus and a rotor provided rotatably with the center in the axial, the cover drum plastic Is made of
In addition, the non-ferrous metal separating device has a double structure of an inner side and an outer side which are different in color.

In the present invention, since the entire cover drum is made of plastic, the cover drum does not generate heat, and the magnet of the rotor can be strengthened to improve the sorting efficiency. Also, since the cover drum has a double structure of an inner part and an outer part that are different in color, if the outer part is damaged and there is a hole, the color of the inner part appears and it is clearly indicated. It is possible to prevent the rotor from being damaged due to incorrect replacement time. Since the cover drum is made of plastic, it is easy to form the cover drum in two pieces, and by doing so, the cover drum can be replaced very easily.

[0014] The present invention has a protrusion extending in the axial direction on the outer surface, without a rotatable cylindrical cover drum to the center of the circle to the axis in the cross section, a cylindrical or columnar, plural magnet is attached to the S pole N pole along the circumferential direction of the outer periphery is alternately different the center of the cover drum is the center of the circle in cross section definitive before <br/> Symbol cover drum
Is disposed at a position, in non-ferrous metal sorting apparatus and a rotor provided rotatably with the center in the axial, <br/> center of the cover drum to the center of the rotor in the axial rotation Is possible and of the cover drum against the center of the rotor
It is a non-ferrous metal separating device characterized in that the position of the center can be changed.

Since the cover drum is rotatable about the rotor shaft center, the position of the cover drum shaft center relative to the rotor shaft center is adjusted without changing the distance between the rotor and the cover drum, and the separation efficiency is improved. Can be optimized.

In order to enable the cover drum to rotate about the center of the rotor as an axis , for example, both side surfaces of the cover drum have a center that coincides with the center of the cover drum.
And is placed at a position eccentric to this center
Axial and disc-shaped adjustment plate is pivoted the center of the rotor in the axial, provided around the adjusting plate the center of the adjusting plate was
It vMedia.Creating <br/> and a rotating plate is rotated relative to the adjusting plate in the.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail with reference to the drawings showing the embodiments. FIG. 1 is a side view of a sorting apparatus 1 of the embodiment, and FIG. 2 is a cutaway view of a cover drum.
FIG. 3 is an explanatory view of adjusting the position of the axis of the cover drum with respect to the axis of the rotor.

In the sorting apparatus 1 of the embodiment, a rotating shaft 5 of a cylindrical rotor 3 is axially mounted on two columns 10 which are vertically installed on a stand 13 with inclination. A plurality of magnets are attached to the rotor 3 so that the S poles and N poles alternate in the circumferential direction of the outer circumference, and the rotation of the motor 11 is transmitted to the rotating shaft 5 by the belt and rotates at high speed.

A cylindrical cover drum 2 is rotatably attached to cover the entire rotor 3. Cover drum 2
Is made of plastic (made of FRP) and has a double structure of an inner part 2a and an outer part 2b which are different in color, and is composed of two divided bodies . Each divided body is attached by screwing a bolt 9 onto the rotary plate 8 of the side surface portion 6. The combination of inner and outer colors is arbitrary, but there are combinations that can be easily recognized when the outer part is damaged and the inner part color appears to the outside, such as red on the inside and white on the outside. desirable.
The seams of the divided bodies are joined by any joining means such as bolts. Further, the seam is an axial protrusion 4 on the outer peripheral surface of the cover drum 2.

Although the rotation axis of the cover drum 2 is parallel to the rotation axis of the rotor 3, both rotation axes are not the same but deviated. The side surfaces 6 on both sides of the cover drum 2 are composed of an adjusting plate 7 and a rotating plate 8. The adjusting plate 7 has a disc shape,
The center is different from the center of the rotary shaft 5 of the rotor 3 (in an eccentric state), and is rotatably attached to the rotary shaft 5.
The rotary plate 8 has a circular donut shape on both the inner and outer circumferences, and its center coincides with the center of the adjusting plate 7 and is rotatably attached to the periphery of the adjusting plate 7. The rotation of the motor 12 is transmitted to the pulley 16 attached to the rotary plate 8, and the cover drum 2
Rotates at a low speed around the adjusting plate 7 around the center of its circular cross section.

Further, since the disk-shaped adjusting plate 7 is rotatably attached to the rotating shaft 5 of the rotor 3 in an eccentric state, the cover drum 2 is rotated by rotating the adjusting plate 7 with respect to the rotating shaft 5.
Rotates about the rotary shaft 5 of the rotor 3. Adjustment plate 7
A turnbuckle 15 is provided as a rotating means. One end of the turnbuckle 15 is pin-joined to the adjusting plate 7, and the other end is pin-joined to the support column 10. By expanding and contracting the turnbuckle 15, the adjusting plate 7 rotates around the shaft 5. Since the adjusting plate 7 is eccentric with respect to the shaft 5, the cover drum 2 rotates about the rotor shaft center, and the position of the cover drum shaft center with respect to the rotor shaft center is changed.

In FIG. 3, the turnbuckle 15 is on the left side.
Shows the most contracted state, and the right side shows the most extended state. Comparing the diagram on the right side with the diagram on the left side, the center of the cover drum 2 on the right side has moved to the upper left with respect to the center of the rotor 3. In this way, the turnbuckle 15
By manipulating, the position of the center of the cover drum with respect to the center of the rotor can be changed to easily optimize the sorting efficiency.

A chute plate, which is a supply means 20 for supplying the material to be separated, is provided above the cover drum 2.
A receiving box 14 for receiving the sorted objects is provided on the table 13.

[0024]

According to the nonferrous metal separating apparatus of the present invention, since the cover drum does not generate heat due to the magnetic force of the rotor, the magnet can be strengthened to improve the separating efficiency. Since it is easy to make the cover drum composed of two divided bodies, it is possible to easily replace the cover drum when the cover drum is damaged. Moreover, since the positional relationship between the rotor and the cover drum can be adjusted, it is possible to optimize the sorting efficiency according to the objects to be sorted.

[Brief description of drawings]

FIG. 1 is a side view of a sorting device 1 according to an embodiment.

FIG. 2 is a Y-direction arrow view of FIG. 1 showing a cover drum in a cutaway manner.

FIG. 3 is an explanatory diagram of adjusting the position of the axis of the cover drum with respect to the axis of the rotor.

FIG. 4 is an explanatory diagram showing a state of separation by a non-ferrous metal separation device.

[Explanation of symbols]

1 sorter 2 cover drum 3 rotor 4 ridges 5 axes 6 side parts 7 Adjustment plate 8 rotating plate 9 bolts 10 props 11 motor 12 motors 13 units 14 Inbox 15 turnbuckles 16 pulley 20 Supplying means

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B03C 1/00-1/32

Claims (4)

(57) [Claims] 1. A has a ridge extending in the axial direction on the outer surface, without a rotatable cylindrical cover drum to the center of the circle to the axis in the cross section, a cylindrical or columnar, the outer periphery a plurality of magnets peripheral and S pole N pole along the direction mounted so as to alternate, the circle center of the cross-sectional arrangement of <br/> is mainly different from the position of the definitive cover drum in the cover drum, the In a non-ferrous metal separating device having a rotor rotatably provided with a center as an axis , the cover drum is made of plastic and has a double structure of an inner side and an outer side of different colors. Characteristic non-ferrous metal separation device 2. The separating apparatus according to claim 1, wherein the cover drum is composed of two divided bodies. 3. has a ridge extending in the axial direction on the outer surface, without a rotatable cylindrical cover drum to the center of the circle to the axis in the cross section, a cylindrical or columnar, the outer periphery a plurality of magnets peripheral and S pole N pole along the direction mounted so as to alternate, the circle center of the cross-sectional arrangement of <br/> is mainly different from the position of the definitive cover drum in the cover drum, the in non-ferrous metal sorting device having a mainly provided rotatably in the axial rotor, the center of the cover drum is rotatable with the center of the rotor in the axial, cover drum to the center of the rotor Non-ferrous metal sorting device characterized by being able to change the position of the center of the 4. The sorting apparatus according to claim 3, wherein both side surface portions of the cover drum coincide with the center of the cover drum.
It has a heart and is placed at a position eccentric to this center.
A disk-shaped adjusting plate that is rotated around the center of the rotor that is placed, and the center of the adjusting plate that is provided around the adjusting plate .
The in the axial Bei a rotating plate which is rotated with respect to the adjusting plate
Ferrous metal sorting apparatus characterized by obtaining