JPH084760B2 - Rotary drum type non-magnetic metal separator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a rotary drum type non-magnetic metal separator.

Conventional technology Conventionally, a rotating magnetic field has been used as a separation device of this kind,
Devices have been proposed for separating non-magnetic metals from a mixture of non-magnetic metals and others.

Among these, inside the top pulley of the conveyor belt, a rotating magnet body having a peripheral speed sufficiently higher than the traveling speed of the conveyor belt is coaxially incorporated, and by the action of the rotating magnetic field generated by this rotating magnet body, An electromagnetic induction action is generated between the non-magnetic metal traveling on the conveyor belt and the non-magnetic metal, which causes an induction current in the non-magnetic metal, and the interaction between the induction current and the rotating magnetic field causes the non-magnetic metal to be non-magnetic. It is known that a thrust force is generated in metal, and only the nonmagnetic metal is scattered and separated from a conveyor belt from a mixture with other substances by this thrust force.

Here, an example of such a non-magnetic metal separating device is illustrated in FIG. 5 of the accompanying drawings.
Based on this figure, the outline of the configuration and operation of this device will be described as follows.

As shown in the figure, this device is composed of a conveyor belt mechanism 10 including a top pulley 1, a tail pulley 2, and an endless conveyor belt 3 wound around the peripheral surfaces thereof, the conveyor belt mechanism 10, in this example, the Terupuri 2, the motor 2 _0, travel by rotating in the direction of arrow R ₁ via a belt 2 _1, the conveyor belt 3 in the direction of arrow R ₀ It is designed to let you. The top pulley 1 is made of a non-magnetic material, and a rotary magnet body 5 is rotatably arranged inside the top pulley 1 coaxially therewith. Specifically, the rotating magnet body 5, on the outer peripheral surface of the cylindrical body, a number of, for example, the magnet 5 ₂ substantially parallelepiped-shaped, N-pole and S
The magnetic poles having different poles are arranged alternately at equal angular intervals so that the outer surface thereof approaches the inner peripheral surface of the top pulley 1. Further, this rotating magnet body 5 is
Although the same rotation direction as R ₂ and the same rotation direction as R ₂ , but with different peripheral speeds, they are rotated at a peripheral speed R ₃ by a separate motor 5 ₀ via a belt 5 ₁ and the like. In this manner, each magnet 5 ₂ attached to the rotating magnet body 5, the top pulley 1 and the conveyor belt 3 wound thereon
Is used to generate a strong magnetic field that passes through the thickness of 1 to reach the surface of the conveyor belt 3.

The operation of the conveyor belt type or rotary drum type non-magnetic metal separating device having such a configuration will be described below.

First conveyor belt 3 of the conveyor belt mechanism 10, driven by the motor 2 _0, between Terupuri 2 and the top pulley 1, relatively to the traveling at a low speed in the direction of arrow R _0, whereas the rotating magnet body 5 is driven by the motor 5 _0, and to rotate several times the speed of the conveyor belt 3 at several tens of times of the peripheral speed R _3. In this state, the non-magnetic metal 61
And the non-metal 6 and the non-metal 62 and the non-metal 6 are supplied on the surface of the conveyor belt 3 above the conveyor belt 3 so as to have a thickness as uniform as possible. 6 reaches the upper region of the vertical line passing through the central axis of the top pulley 1, that is, the top, as the conveyor belt 3 travels. At this time, the non-magnetic metal 61 contained in the mixture 6, rotating magnetic field generated by the magnet 5 ₂ attached to the rotating magnet body 5 which is rotating at a high speed peripheral speed R ₃ than the top pulley 1 As a result, the non-magnetic metal 61 has an electromagnetic induction effect due to this rotating magnetic field, and an induced current, that is, an eddy current as an electric conductor is generated in the non-magnetic metal 61. Due to the interaction between the induced current and the rotating magnetic field generated by the rotating magnet body 5, a thrust acts on the non-magnetic metal 61 in the traveling direction of the conveyor belt 3. That is, the non-magnetic metal 61
A strong thrust or driving force different from the propulsive force based on the frictional force with the conveyor belt 3 or a repulsive force in the centrifugal direction is generated, and at the same time, a synergistic effect with the rotating magnetic field due to the rotation of the rotating magnet body 5 Due to the effect, the conveyor belt 3 is subjected to the acceleration flight action in the traveling front direction. As a result, the non-magnetic metal 61 has a falling trajectory 61 as shown in FIG. 1 as a curve including a tangent line drawn on the peripheral surface of the top pulley 1 at an intersection with a vertical line passing through the central axis thereof. ₀
Along the line, the particles are discharged from the surface of the conveyor belt 3. In addition, the non-metal 62 contained in the mixture 6
Is not affected by the suction force or a rotating magnetic field by the magnet 5 _second rotary magnet body 5, and the outer periphery of the top pulley 1, at the intersection of the horizontal line passing through the central axis thereof, present in a vertical tangent to the outer peripheral surface It follows that the falling trajectory 62 ₀ is dropped from the surface of the conveyor belt 3 by its own weight. Furthermore, the magnetic material 62, magnetic attraction by the magnetic field of the magnet 5 ₂ of the rotating magnet body 5, since by the induced current larger than the thrust, to the bottom peripheral portion of the top pulley 1 remains adsorbed on the surface of the conveyor belt 3 Although coming carried, since the conveyor belt 3, the strength of the magnetic field by the magnet 5 ₂ weakens with departing from the bottom peripheral surface of the top pulley 1, from the surface of the conveyor belt 3 by its own weight, falls along the drop path 63 ₀ It will be.

Therefore, by installing dividers 9 ₀ , 9 ₁ , 9 ₂ and 9 ₃ for each of the separated objects 61, 62 and 63 at the falling points, it is possible to select and collect these objects. It will be possible.

However, in the conventional rotary drum type non-magnetic metal separating device having such a configuration, the internal rotating magnet body (magnetic pole rotor) 5 and the non-metal outer cylinder drum rotating the outer periphery thereof, or The shell (top pulley) 1 and the non-metal outer cylinder drum (top pulley) 1 are arranged coaxially with each other, and the conveyor belt 3 is provided between the shell and the other pulley, that is, the tail pulley 2. It is configured by being endlessly wound, and during its operation, the inner magnetic pole rotor 5 and the non-metal outer cylinder drum (top pulley) 1 are simultaneously rotated and driven to generate the non-metal outer cylinder drum 1.
Similarly, by continuously rotating and driving the conveyor belt 3 toward the inner magnetic pole rotor 5 that is rotating and being driven, the object 6 to be processed is supplied onto the conveyor belt 3, and the conveyor belt 3 Although it is continuously transferred toward the magnetic pole rotor 5 via the belt 3, the workpiece 6 transferred via the conveyor belt 3 is moved by the conveyor belt 3 via the non-metal outer cylinder drum 1. Since the conveyor belt 3 receives the maximum alternating magnetic field at the first contact point with the non-magnetic outer cylinder drum 1, that is, at the top of the non-metal outer cylinder drum, the non-magnetic metal acts as an electric conductor. The repulsive force in the centrifugal direction is generated by the generation of the eddy current, and at the same time, the combined magnetic force generated by the synergistic effect of the rotation of the internal magnetic pole rotor receives the acceleration, and the flying direction is increased. Part was largely acts repulsive force caused by the magnetic field of the magnetic pole rotor, the majority of the acceleration energy by the repulsive force is consumed to jumping upward position, as a result,
The horizontal flight distance at the drop position is reduced. Therefore, it is clear that increasing the horizontal flight distance of the non-magnetic metal is effective for surely separating the non-metal and the non-magnetic metal with higher accuracy.

Therefore, the present invention has a small difference in horizontal flight distance between a non-magnetic metal and a non-metal in a conventionally known rotary drum type non-magnetic metal separating device, and therefore, It is an object of the present invention to obtain an improved rotary drum type non-magnetic metal separating device which can solve the problem that it is difficult to separate with high accuracy and certainty during the period.

Means for Solving the Problems In the present invention, in order to solve this problem, when the position where the non-magnetic metal receives the maximum repulsive force is the top of the non-magnetic outer cylinder drum, the non-magnetic metal receives the non-magnetic metal. Considering that the direction of the synthetic acceleration force is biased upward and the horizontal flight distance is diminished, the position where the maximum repulsive force is received is shifted to the forward tilted position rather than the top of the non-metal outer drum. The synthetic accelerating force is further tilted forward to further widen the difference in horizontal flight distance between the non-metal and the non-magnetic metal at the horizontal drop position.

That is, the bearing stand 14 is fixedly arranged so as to be rotatable, has the thin portion 12a and the thick portion 12b in the radial direction, and has the through hole 12
A fixed sleeve 12 provided with c, an adjusting rod 25 provided in the fixed sleeve 12 and penetrating a circumferential groove 14a of the bearing mount 14, and a through hole 12c of the fixed sleeve 12.
A rotary shaft 11 having a pulley 15 rotatably provided via an internal magnetic pole rotor bearing 13; an internal magnetic pole rotor 5 provided on the rotary shaft 11 and having an N pole and an S pole on its peripheral surface; The fixing sleeve 12 corresponding to the thin portion 12a and the thick portion 12b.
A drum bearing 21 provided on the outer periphery position of the flange bearing housing 20 having a boss portion 20 ₀ that is provided on an outer periphery of the drum bearing 21, provided in the flange bearing housing 20 the inner pole rotor 5 A cylindrical non-magnetic outer cylinder drum 1 provided corresponding to the outer circumference of the outer peripheral surface, an endless conveyor belt 3 provided on the outer circumference of the non-magnetic outer cylinder drum 1, and an outer peripheral surface of the inner magnetic pole rotor 5. And the innermost surface of the non-magnetic outer cylinder drum 1 and the closest portion D _S having the smallest space, and the first portion of the rotating shaft 11 via the thin portion 12a and the thick portion 12b. The one axis X ₁ -X ₁ is located eccentric to the second axis X ₂ -X ₂ of the non-magnetic outer cylinder drum 1 by a distance d, and the fixed sleeve 12 is rotated via the adjusting rod 25. the position of the closest portion D _S of the conveyor belt 3 by And variable rolling along the direction,
This is a configuration that can improve the collection accuracy.

EXAMPLE The present invention will now be described with reference to a first example of the first embodiment of the accompanying drawings.
A detailed description will be given with reference to FIGS. In these drawings, the same members as those of the device shown in FIG. 5 are designated by the same reference numerals.

First, the entire apparatus of this embodiment is substantially the same as that of the conventional structure shown in FIG. 5, but the apparatus shown in FIG. The bearing structure of the rotation drive shaft of the inner magnetic pole rotor 5 is different.

That is, as shown in FIGS. 1 and 2, (FIG. 1 is a longitudinal sectional view showing almost half of the non-magnetic outer cylinder drum 1 of the apparatus according to this embodiment, and FIG. 2 is a side view thereof. In this embodiment, the inner magnetic pole rotor 5 in which a large number of magnetic poles N and S are alternately arranged on the outer peripheral cylindrical surface is
It is fixedly mounted horizontally on its axis of rotation 11, which axis is parallel to its first axis X ₁ -X ₁ but is eccentric by a distance d from it X ₂ −. It is eccentrically passed through the cylindrical fixed sleeve 12 having X ₂ in the axial direction, and is rotatable with respect to the fixed sleeve 12 via the bearing 13 for the inner magnetic pole rotor near its end. Supported by. It should be noted that the fixing sleeve 12 itself can be fixed to the device near the outer end portion thereof through a bearing mount 14 that is attached to the device mount of the rotary drum non-magnetic metal separating device according to the present invention. ing. Further, a pulley 15 for driving the rotating shaft 11 of the inner magnetic pole rotor 5 is fixed to the outer end portion of the rotating shaft 11, and a drive motor (not shown) similarly causes a V15 (not shown).
It is designed to be rotationally driven via a belt.

On the other hand, a substantially disk-shaped flange bearing housing 20 is fixed to the outer peripheral surface of the end surface of the non-magnetic outer cylindrical drum 1 having the internal magnetic pole rotor 5 built therein, and protrudes to the center thereof. inside the boss portion 20 ₀ that is formed, has an internal drum bearing 21, the drum bearing 21 is, in the inside of the inner pole rotor bearing 13,
It is fixed to the outer peripheral surface of the fixed sleeve 12.

Further, in the present invention, the adjusting rod 25 is fixed near the outer end of the fixed sleeve 12 so as to penetrate the bearing mount 14 and project upward.
Is guided by a circumferential groove 14a which extends through the upper wall of the bearing mount 14 in the peripheral direction and is rotatable with respect to the bearing mount 14 together with the fixed sleeve 12. On the end surface of the bearing mount 14, the bearing mount 14 of the adjusting rod 25
Scale plate (not shown) for displaying the relative rotation value with respect to
Is an index for indicating the scale value of the scale plate on the outer end surface of the fixed sleeve 12, which is attached in an arc shape.
28 is displayed.

That is, the fixed sleeve 12 has a thin portion 12a and a thick portion 12b that gradually change in the radial direction, and the through hole 12
comprising a c, the drum bearing 21 is provided on the outer circumferential position of the fixing sleeve 12 corresponds to the thin portion 12a and the thick portions 12b, the boss portion 20 ₀ corresponding to the peripheral position of the drum bearing 21 Is provided. Therefore, the thin portion 12a
The first axis X ₁ -X ₁ of the rotary shaft 11 is eccentric to the first axis X ₂ -X ₂ of the non-magnetic outer cylinder drum 1 by the distance d via the thick portion 12b, Fixed sleeve through 25
By rotating 12, the position of the closest portion D _S formed by the outer peripheral surface of the inner magnetic pole rotor 5 and the inner peripheral surface of the non-magnetic outer cylindrical drum 1 and having the smallest gap is rotated by the conveyor belt 3. It can be variable along the direction.

Although the present invention has such a configuration, the inner magnetic pole rotor 5 is V-belt (not shown) by the drive pulley 15 fixed to the outer end of the inner magnetic pole rotor 5 via the rotating shaft 11.
Is driven to rotate by a motor (similarly not shown), and the non-magnetic outer cylinder drum 1 is, for example,
Terupuri 2 (FIG. 5) is, the motor 2 ₀ and belt 2
It is driven to rotate via ₁ (FIG. 5), and is driven to rotate via the conveyor belt 3. In this case, the axis X ₁ -X ₁ of the rotating shaft 11 of the inner magnetic pole rotor 5 which is driven to rotate by the rotating shaft 11 via the pulley 15 and the non-magnetic outer cylindrical drum 1 which is driven to rotate via the conveyor belt 3. Since there is an amount of eccentricity of a distance d between the rotary shaft and the axis line X ₂ -X ₂ of the rotary shaft of the conveyor belt 3, the conveyor belt 3 forms the rotary shaft 11 of the inner magnetic pole rotor 5 on the peripheral surface of the non-magnetic outer cylinder drum 1. When it comes to a position corresponding to the top of the vertical plane including the axis X ₁ -X _{1 of} , the distance between the magnetic pole N or S of the internal magnetic pole rotor 5 and the conveyor belt 3 becomes the minimum, Therefore, the strongest magnetic field can be applied to the non-processed object 6 (FIG. 5) transferred onto it, but the conveyor belt 3 passes over the top of the non-magnetic outer cylinder drum 1 as it rotates. And conveyor belt 3
And the distance from the magnetic poles N or S around the inner magnetic pole rotor 5 gradually increases, so that the object 6 to be processed on the conveyor belt 3 is separated from the magnetic poles N or S of the inner magnetic pole rotor 5. The magnetic field received gradually decreases and the non-magnetic outer cylinder drum 5
The magnetic field becomes smaller when it reaches the position of the bottom of the vertical plane including the axis line X ₂ -X ₂ of, and after that, the workpiece 6 is exposed to the outside of the influence of the magnetic field of the inner magnetic pole rotor 5. , Will come off.

3 and 4, the axis X ₂ -X ₂ of the rotation shaft of the non-magnetic outer cylinder drum 1 and the axis X of the rotation shaft 11 of the inner magnetic pole rotor 5 are shown.
FIG. 6 is an explanatory diagram showing a change in the eccentric azimuth between X ₁ and X ₁ , that is, a change in the drop trajectory of the nonmagnetic metal 61 by changing the position of the closest portion D _S.

FIG. 3 shows the axis X ₁ -X ₁ of the rotary shaft 11 of the inner magnetic pole rotor 5 and the axis X ₂ -X ₂ of the rotary shaft of the non-magnetic outer cylinder drum 1 in the rotary drum type non-magnetic metal separator. Shows the state when they are in the same vertical position and the latter is in the lower part of the former, and the maximum point of the magnetic field (that is, the closest portion D _S is located) at the top of the non-magnetic outer cylinder drum 1. However, in this state, the non-magnetic metal 61 in the workpiece 6 sent on the conveyor belt 3 is the non-magnetic outer drum 1
At the apex of the magnetic field, the action of the alternating magnetic field gives an acceleration of H due to the upward repulsive force, and at the same time, the rotational speed R ₃ of the internal magnetic pole rotor 5 gives an acceleration V in the horizontal front direction. As a result, the nonmagnetic metal 61 is accelerated in the direction of the combined acceleration F of the vertical acceleration H and the horizontal acceleration V. Here, the non-magnetic metal to be recovered or separated
Most of the light metals represented by aluminum, especially aluminum, have a low bulk specific gravity, and when entering the alternating magnetic field, the vertical acceleration H causes upward movement before the horizontal acceleration V is sufficiently effective. I know I'll jump up. Therefore, the horizontal distance L ₁ between the falling point a of the non-metallic material 62 and the falling point b of the non-magnetic metallic material 61 is relatively small. Therefore, as a means for increasing the horizontal distance L _{1 more} effectively, as shown in FIG.
The fixing sleeve 12 is attached to the bearing mount 14 via the adjusting rod 25.
With respect to the rotation direction of the conveyor belt 3, the maximum magnetic field point on the surface of the non-magnetic outer cylinder drum 1 (that is, the closest point D _S ) in the rotation direction R ₃ of the inner magnetic pole rotor 5 is a forward position. When it is deviated in the (rotational direction of the conveyor belt 3), the azimuth of the synthetic acceleration F received by the non-magnetic metal 61 is inevitably tilted forward, and the protrusion angle is also lowered. Therefore, the falling point a of the non-metals 62 does not change, but the non-metals 62
The falling point c of 61 is deviated to the front, and the horizontal distance L ₂ between the two falling points a and c is significantly increased as compared with the horizontal distance L ₁ shown in FIG. Become.

In this case, increasing the transfer speed R ₀ of the conveyor belt 3 to increase the horizontal drop distance of the non-metals 62 means that the entire workpiece 6 at the same time, that is, the non-metals 62 also falls horizontally. Therefore, this means is not effective for increasing the distance difference between the two.

Thus, according to the present invention, the non-metal and non-magnetic metal in the object to be treated, which has been a problem in the conventionally known rotary drum type non-magnetic metal separator, can be reliably separated with higher accuracy. It becomes possible to increase the difference in horizontal flight distance between the two, which is indispensable for achieving the above. Further, for this horizontal flight distance, the position of the closest portion D _S can be freely adjusted by adjusting the relative deviation between the fixed sleeve 12 and the bearing mount 14 by the adjusting rod 25. It is possible.

EFFECTS OF THE INVENTION The present invention, which has the above-described configuration and operation, solves the problems in the conventionally known rotary drum type non-magnetic metal separator, and particularly, the non-metal in the object to be treated. And an effect of providing an improved rotary drum type non-magnetic metal separating device capable of accurately and reliably separating the non-magnetic metal from each other and adjustably,
It is something to demonstrate.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a portion of a non-magnetic outer cylinder drum showing one embodiment of the device of the present invention, FIG. 2 is a side view thereof, and FIGS. 3 and 4 show the operation and effect of the device of the present invention. FIG. 5 is an arrangement schematic diagram showing an example of a conventionally known rotary drum type non-magnetic metal device. 1 ... Non-magnetic outer cylinder drum, 2 ... Tail pulley, 3 ...
Conveyor belts, 5 ...... inner pole rotor, 5 ₂ ...... magnets,
6 …… Unprocessed object, 11 …… Internal magnetic pole rotor rotation axis, 12 ……
Fixed sleeve, 12a ... thin-walled part, 12b ... thick-walled part, 13 ...
Internal pole rotor bearing, 14 ...... bearing base, 20 ...... flange bearing housing, 20 ₀ ...... boss portion, 21 ...... drum bearing, 25 ...... adjusting rod, 26 ...... circumferential groove, 27 ...
… Scale plate, 28 …… Indicator, 61 …… Non-magnetic metal, 62 …… Non-metal, 63 …… Ferromagnetic material, D _S …… The closest part.

Claims (1)

[Claims] 1. A fixing sleeve (12) rotatably provided on a bearing stand (14) of a fixing device, having a thin portion (12a) and a thick portion (12b) in a radial direction and having a through hole (12c). ) And an adjusting rod (2) provided on the fixed sleeve (12) and penetrating the circumferential groove (14a) of the bearing mount (14).
5), a rotary shaft (11) rotatably provided in the through hole (12c) of the fixed sleeve (12) through an internal magnetic pole rotor bearing (13) and having a pulley (15), and the rotary shaft. (11)
Is provided on the outer peripheral position of the fixed sleeve (12) corresponding to the thin wall portion (12a) and the thick wall portion (12b), and the inner magnetic pole rotor (5) having N pole and S pole on the peripheral surface. And a flange bearing housing (20) having a boss portion ( ₂₀₀ ) provided on the outer periphery of the drum bearing (21), and a flange bearing housing (20) provided on the flange bearing housing (20). A cylindrical non-magnetic outer cylinder drum (1) provided corresponding to the outer circumference of the inner magnetic pole rotor (5).
An endless conveyor belt (3) provided on the outer circumference of the non-magnetic outer cylinder drum (1), an outer peripheral surface of the inner magnetic pole rotor (5) and the non-magnetic outer cylinder drum (1). closest portion most spacing formed by the peripheral surface is small and (D _S), comprising a first axis of the thin portion (12a) and the thick portion and the rotary shaft via (12b) (11) (X ₁ -X _1), the located eccentric distance (d) relative to the second axis (X ₂ -X ₂₎ of non-magnetic outer cylinder drum (1), the adjustment rod (25) rotary drum, characterized in that the position of the closest portion (D _S) and the configuration can be varied along the rotational direction of the conveyor belt (3) by rotating the locking sleeve (12) through Type non-magnetic metal separator.