JP2002035699A - Wind power sorting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the accuracy of separation by prolonging a residence time in the state of making the gravity in vertical direction acting the heavy weight material and the ascending force approximately balanced and reducing the overlapping between heavy weight material and lightweight material and, at the same time, separating the heavy weight material and lightweight material in horizontal direction in a wind power sorting device which separates crushed material which consists essentially of plastic to the lightweight material such as film-like crushed material, foamed material and dust and the heavy weight material which consists essentially of the plastic other than the lightweight material. SOLUTION: A dust collector 8 which recovers the lightweight material is connected with the upper end part 6b of a tubular body 6 which has an approx. cylindrical shape and a central axis thereof in approx. vertical direction and a sorted material discharging part 12 which discharges the heavy weight material is disposed at a lower end part 6c of the tubular body 6. An air supplying pipe 10 which emits the air approx. tangentially in the obliquely upper direction is disposed and a hopper for raw material 9 which feeds the raw material into the air focedly fed from the air supplying pipe 10 is disposed on the lower part of the tubular body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention separates crushed materials mainly composed of plastics into light-weight materials such as film-like crushed materials, foams and dust, and other heavy materials mainly composed of plastics. The present invention relates to a wind separation device.

[0002]

2. Description of the Related Art Conventionally, a wind separation device used in a recycling plant has been configured as shown in FIG.
Hereinafter, the configuration and operation of this device will be described.

As shown in FIG. 8, an air intake duct 2 and a first discharge unit 3 are arranged at a lower end of a vertical zigzag path 1.
A second discharge unit 4 is arranged at the upper end, and a raw material supply pipe 5 is arranged below the zigzag path 1.

[0004] The crushed material is transferred from the raw material supply pipe 5 to the zigzag path 1.
When it is supplied to the inside, the crushed material is blown up to the upper part while colliding with the inner wall of the zigzag path 1 by the air flow supplied from the air suction duct 2.

At this time, the heavy material in the crushed material falls while resisting the air flow according to the gravity in the zigzag path 1 in a position where the air flow is weak or in a state where the air resistance is small in shape. The heavy material a containing plastic as a main component is recovered from the outlet 3 of the device 1. On the other hand, a light-weight material such as a film-like lightweight material and a foam and dust in the crushed material b
Is blown up by the air flow in the zigzag path 1 and discharged from the second discharge port 4.

[0006]

However, in such a conventional wind separator, in the zigzag path 1, the weight a, which is mainly composed of plastic, is about to fall, and the air flow about to rise, The range in which the force is substantially balanced is narrow, and the time for staying in the range where the gravity and the lifting force are substantially balanced is shortened. The time during which the loosening to separate b works is short.

As a result, the light-weight object b, which cannot be completely separated with the light-weight object b sandwiched between the heavy-weight objects a in a range where the gravity and the lifting force of the heavy-weight object a are substantially balanced, is replaced with the heavy-weight object a. Since they descend together and are discharged from the first discharge port 3, there is a problem that foreign matter (light weight) is mixed into the heavy load a.

The present invention has been made to solve the above-mentioned problems, and increases the moving distance of a crushed material to loosen a heavy object and a light object in the crushed object, so that the vertical gravity and the lifting force acting on the heavy object are substantially balanced. It is an object of the present invention to lengthen the residence time in a state where the heavy object and the light object are overlapped with each other, to reduce the overlap between the heavy object and the light object, and to separate the heavy object and the light object in the horizontal direction to improve the separation accuracy.

[0009]

According to the present invention, in order to achieve the above object, a collection means for collecting a light-weight object is connected to an upper end of a substantially cylindrical cylinder whose center axis is substantially vertical. At the lower end of the cylinder, there is provided a sorted material discharge section for discharging heavy materials, and at the lower part of the cylinder, an air supply pipe for discharging air in a substantially tangential direction obliquely upward is provided. This is one in which a raw material supply means for supplying is arranged.

[0010] Thus, by moving the crushed material in a spiral by the spiral upward air flow, the moving distance of the crushed material can be increased, and the heavy and light objects in the crushed material can be loosened. Longer residence time when the vertical gravity acting on the object and the lifting force are almost balanced, reducing the overlap between heavy and light objects, and separating heavy and light objects horizontally. And separation accuracy can be improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a substantially cylindrical tube having a central axis substantially in a vertical direction, and a collecting means connected to an upper end portion of the cylindrical body for collecting a light-weight object. And a sorted material discharge unit provided at a lower end portion of the cylindrical body and discharging a heavy material,
An air supply pipe provided at a lower portion of the cylindrical body to discharge air in a substantially tangential direction in an obliquely upward direction; and a raw material supply unit configured to supply raw material to air supplied from the air supply pipe. By the air fed from the supply pipe, a spiral rising air flow can be formed inside the cylinder along the inner wall of the cylinder, and the peripheral velocity of the inside of the cylinder increases from the central axis to the outer edge. It is a fast, spiral centrifugal rising airflow. The crushed material supplied from the raw material supply means moves in a spiral by the spiral upward airflow, and the distance that the crushed material actually moves (distance in which the crushed material moves) can be increased, and the weight in the crushed material can be increased. It can loosen objects and lightweight objects, increase the residence time in a state where the vertical gravity acting on heavy objects and the lifting force are almost balanced, reduce the overlap between heavy and light objects, and achieve separation accuracy Can be improved. In addition, a substantially horizontal centrifugal force acts in the cylinder, and a force acts to separate a heavy object and a light object in the horizontal direction. Therefore, heavy objects move outward due to the centrifugal force of the spiral flow,
Since the lightweight object has a small centrifugal force and is located on the center axis side of the cylindrical body, the separation accuracy can be further improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the recovery means has an internal pressure adjusting means for reducing the internal pressure in the cylinder to a negative pressure. By setting the pressure, even if the sorted material discharge section is open,
Dust and the like do not scatter from the cylindrical body, and the container for collecting heavy objects can be easily replaced.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, the convex portion against which the vortex inside the cylindrical body by the air fed from the air supply pipe collides with the upper portion of the inner surface of the cylindrical body. When the crushed material reaches the upper part of the cylinder due to the inertial force of the spiral rising air flow, the heavy object collides with the convex portion and rebounds, and the spiral rising air flow and Since the inertia force is in the opposite direction, it falls while stalling, and is collected through the sorted material discharge unit. On the other hand, since the lightweight object has a small inertial force, it is caused to flow by the airflow avoiding the convex portion and is collected from the upper part of the cylindrical body by the collecting means. Therefore, it is possible to further improve the accuracy of separating heavy and light materials in the crushed material. In addition, since the heavy object can be prevented from being discharged from the upper part of the cylindrical body by the inertial force due to the spiral upward airflow, the recovery yield (recovery amount) of the heavy object can be improved.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the convex portion inclines the surface on the side where the vortex flows inside the cylindrical body so as to guide the surface downward. When the crushed material reaches the upper part of the cylinder due to the inertial force of the spiral upward air flow, the heavy object collides with the inclined surface of the convex part, and the upward inertial force is used to reduce the sorted material discharge. And fall to the sorted material discharge portion while being decelerated by the force of the rising air flow, and are collected. On the other hand, since the lightweight object has a small inertial force, it is swept by the air flow disturbed by the inclined surface of the convex portion and rises in a spiral shape, and is collected from the upper part of the cylindrical body by the collecting means. Therefore, since the heavy object is straightly turned downward and dropped, the accuracy of separating the heavy object and the light object in the crushed object can be improved. Further, the recovery yield of heavy objects can be further improved.

According to a fifth aspect of the present invention, in the third aspect of the present invention, the convex portion guides a surface of the cylindrical body on the side where the vortex current collides in a substantially central axis direction of the cylindrical body. When the crushed material reaches the upper part of the cylinder due to the inertial force of the spiral upward air flow, the heavy object collides with the slope of the convex part, and the inertial force in the upward direction is reduced by the cylindrical body. In the direction of the central axis. At this time, the centrifugal force is small in the substantially central axis direction of the cylinder,
It forms a weak spiral updraft. Also, since the crushed material is spirally rising along the inner wall of the cylinder,
The substantially central axis of the cylindrical body is an area where there is no crushed material (sparse state). Therefore, heavy objects that collided with the inclined surface of the protruding portion and rebounded near the center axis of the cylinder are selected in an area where there is almost no crushed material that rises while decelerating with a weak rising airflow around the center axis of the cylinder. Drops into the material discharge section and is collected. Also, the light-weight objects that overlap between the heavy objects and are brought near the center axis of the cylinder are separated from the heavy objects because they are sparsely crushed areas, and ride on the airflow near the center axis of the cylinder, It is discharged from the upper part of the container and collected, and the separation accuracy and the recovery yield of heavy objects can be further improved.

[0016] The invention according to claim 6 provides the above-mentioned claims 1 to
In the invention described in 5, the air supply pipe has a spiral shape at least in the vicinity of a communication portion with the substantially cylindrical cylinder, and supplies air and crushed material from the air supply pipe to the cylinder. The rotation can be applied to the air and the crushed material, and the crushed material can be dispersed inside the cylinder. Therefore, a light object is less likely to be caught between the heavy objects, and the separation accuracy can be further improved.

The invention described in claim 7 is the above-mentioned claim 1
In the invention described in Item 6, at least a part of the cylinder can be seen through, the movement of the crushed object inside the cylinder can be seen through, and the lifting force and the gravitational force that affect the separation accuracy of the crushed object can be seen. The balance between the amount of air blown from the air supply pipe and the amount of air exhausted by the recovery means can be easily adjusted while seeing through the movement of the crushed material.

[0018] The invention described in claim 8 is the above-mentioned claim 1-
7. In the invention according to 7, wherein a means for preventing electrification in the cylinder is provided, and in the case where a dried crushed material of a plastic which is easily charged with static electricity is already charged with static electricity before being supplied to the cylinder, Or in the case of static electricity generated by friction between crushed materials inside the cylinder,
Static electricity can be removed. Therefore, since the electrostatic attraction between the crushed objects due to static electricity can be prevented, a light-weight object is stuck to a heavy object by static electricity, and a heavy object of a different material is charged and stuck to the static electricity so that the light-weight object is pinched. Therefore, the separation accuracy can be further improved.

[0019]

In the following, regarding the embodiments of the present invention, after crushing used home appliances, iron is collected by a magnetic separator, and then the residue (plastic group) after collecting non-ferrous metals by a non-ferrous separator is sorted out. An example of separation will be described with reference to the drawings.

(Embodiment 1) As shown in FIG.
Has a substantially cylindrical shape having a body portion 6a, is installed so that a central axis thereof is substantially in a vertical direction, and has an upper end portion 6b and a lower end portion 6c formed in a substantially truncated cone shape above and below the body portion 6a.
A dust collector (recovery means) 8 is connected to a discharge port 7 provided at the upper end 6a of the cylindrical body 6, and a raw material hopper (raw material supply means) 9
Among the crushed materials supplied from, lightweight materials are collected.

The air supply pipe 10 is for sending air into the cylinder 6 by a blower 11 under pressure, and the tip of the air supply pipe 10 is placed obliquely upward and substantially tangentially above the lower end 6 c of the cylinder 6. It is provided for. Here, the tip of the air supply pipe 10 may be provided below the body part 6 a of the cylinder 6. The crushed material (raw material) is supplied from the raw material hopper 9 to the air fed from the air supply pipe 10. In addition,
The location where the crushed material is supplied from the raw material hopper 9 may be anywhere in the air supply pipe 10 including the vicinity of the tip of the air supply pipe 10.

At the lower end 6c of the cylindrical body 6, there is provided a sorting material discharging portion 12 for discharging heavy materials among the crushed materials. The dust collector 8 controls the rotation speed to control the amount of exhaust air, and sets the amount of exhaust air to be slightly larger than the amount of air blown by the blower 11 so that the internal pressure in the cylinder 6 becomes negative. .

The operation of the above configuration will be described. In the raw material hopper 9, a crushed material mainly composed of plastic, that is, a light-weight material b such as a crushed film, a foam, and dust.
And a crushed material mainly composed of a plastic mixed with a weight a mainly composed of other plastics,
When the operation of the dust collector 8 and the blower 11 is started, air is pressure-fed into the cylinder 6 via the air supply pipe 10. By supplying the crushed material from the raw material hopper 9 to the air fed from the air supply pipe 10, the crushed material is directed substantially obliquely upward from the upper portion of the lower end portion 6 c of the cylindrical body 6 together with the compressed air. And supplied into the cylindrical body 6.

Here, the amount of exhaust air from the dust collector 8 is
Is set to be slightly larger than the amount of air blown, and since the inside of the cylinder 6 has a negative pressure, a spiral rising air flow in the cylinder 6 and a weak rising air Flow occurs. Therefore, the crushed material sent into the cylinder 6 is spirally blown up by the spirally rising airflow.

At this time, the heavy object (plastic) a is
It moves to the inner wall side of the cylinder 6 by centrifugal force and decelerates, falls down inside the cylinder 6 by gravity, and is discharged from the sorted material discharge unit 12 and collected. Here, the size (weight) of the heavy object a in the crushed material greatly varies, and the large heavy object a
Falls at a fast stage, and the smaller the size, the later the fall timing. On the other hand, a light-weight material (a film-like crushed material, a foam, dust, etc.) b is a cylindrical body 6 due to a spiral rising airflow.
It is swirled up to the upper part and collected by the dust collector 8.

As a result, the moving distance can be increased (the residence time in the separation zone can be lengthened) by the body portion 6a of the cylindrical body 6 having the separating effect in which the vertical force of the heavy object a is approximated, so that the heavy object a can be extended. The separation accuracy between the light-weight object a and the light-weight object b can be improved. Further, the structure is extremely simple, and an inexpensive wind power sorting device can be obtained.

Further, since the amount of exhaust air from the dust collector 8 is controlled and the amount of exhaust air is set slightly larger than the amount of air blown from the blower 11, the internal pressure in the cylinder 6 is set to a negative pressure.
Even when the sorted material discharge unit 12 is open, dust or the like does not scatter from the cylindrical body 6, and the container for collecting the heavy load a can be easily replaced.

In this embodiment, the amount of exhaust air from the dust collector 8 is controlled to make the internal pressure in the cylinder 6 negative, but the amount of air blown from the blower 11 is controlled to reduce the internal pressure in the cylinder 6 to negative pressure. Needless to say, this may be done.

Further, even if the inside of the cylinder 6 is not set to a negative pressure,
By keeping the sorted material discharge portion 12 for discharging the heavy material a sealed with a slightly permeable collection bag (the inside of the cylinder 6 has a positive pressure), the heavy material and the light material can be similarly separated. It goes without saying that excellent separation performance can be obtained.

(Embodiment 2) As shown in FIG. 2, the collision plate (convex portion) 13 is provided at at least one position on the upper surface of the inner surface of the cylindrical body 6 so that the collision surface 14 projects in the vertical direction and in the direction of the central axis. The swirling rising air flow in the cylindrical body 6
Is configured to collide with Other configurations are the same as those of the first embodiment.
Is the same as

The operation of the above configuration will be described. In addition,
The basic operation of separating the crushed material supplied into the cylinder 6 together with the compressed air into the heavy material a and the light material b is described in the first embodiment.
Since the operation is the same as that described above, the description is omitted.

As shown in FIG. 2, the air fed into the cylinder 6 from an air supply pipe (not shown) forms a spiral rising air flow inside the cylinder 6, and this rising air flow Crushed material (heavy material a, light material b)
, The centrifugal force of the spiral upward air flow acts during the upward movement.

At this time, the heavy object a collides with the collision plate 13 while ascending along the inner wall, rebounds in the direction opposite to the flow direction of the spiral rising air flow, falls while gradually stalling, and falls. Is discharged from the sorted material discharge unit 12 of the refrigeration system. On the other hand, the light object b rises substantially along the inner wall of the cylindrical body 6 while being affected by the rising airflow rather than the centrifugal force, and
Is raised by the impact plate 13 due to the impact of the impact plate 13.
3 and rises in a substantially spiral shape while avoiding in a complicated manner such as the vertical direction and the central axis side direction, and is discharged from the discharge port 7 of the upper end portion 6b.

As a result, the heavy object a
As a result, the light object b sandwiched between the heavy objects a is released, and the heavy object a and the light objects b are separated.
In addition, dust and the like that have weakly adhered to the heavy object a are also separated, so that separation accuracy can be improved. further,
Since the weight of the heavy object a is blown up by the spiral rising air flow and the amount of the heavy object a mixed into the light object b can be reduced, the recovery yield (recovery amount) of the heavy object a can be improved.

(Embodiment 3) As shown in FIG. 3, the collision plate (convex portion) 13a has an impact surface 14a inclined at an upper portion of the inner surface of the cylindrical body 6, and is provided at at least one position so as to protrude in the direction of the central axis. It is arranged so as to be guided downward in the cylindrical body 6 when the spiral upward airflow in the cylindrical body 6 collides with the collision surface 14a. Other configurations are the same as those in the first or second embodiment.

The operation of the above configuration will be described. In addition,
The basic operation of separating the crushed material supplied into the cylinder 6 together with the compressed air into the heavy material a and the light material b is described in the first embodiment.
Alternatively, since the operation is the same as that of the second operation, the description is omitted.

As shown in FIG. 3, the air fed from the air supply pipe (not shown) into the cylindrical body 6 forms a spiral rising air flow inside the cylindrical body 6, and this rising air flow Crushed material (heavy material a, light material b)
, The centrifugal force of the spiral upward air flow acts during the upward movement.

When the heavy object a collides with the collision surface 14a of the collision plate 13a, the heavy object a rebounds downward, falls while being decelerated by the force of the rising airflow, and is discharged from the lower sorted material discharge unit 12 at the lower part. As in the case of the second embodiment, the lightweight object b
It rises in a substantially spiral shape while avoiding the vertical and central directions of 3a in a complicated manner, and is discharged from the discharge port 7 of the upper end portion 6b of the cylindrical body 6.

As a result, the heavy object a colliding with the collision plate 13a is rebounded downward, and the inertia force in the direction of gravity increases, so that the rebounded heavy object a is quickly discharged from the sorted material discharge unit 12. Is done. Further, even small pieces having a small mass (small inertia force) are less likely to be blown up again into a spiral upward airflow, so that the absolute amount of the crushed material inside the cylindrical body 6 can be reduced. The probability that the light-weight object b is interposed between a is also reduced. Further, the recovery yield (recovery amount) of the heavy object a can be improved.

(Embodiment 4) As shown in FIG. 4, the collision plate (convex portion) 13b is provided at at least one position so that the collision surface 14b is inclined above the inner surface of the cylindrical body 6 so as to protrude in the direction of the central axis. The cylinder 6 is inclined so as to be guided in the direction of the center axis of the cylinder 6 when the spiral rising airflow in the cylinder 6 collides with the collision surface 14b. Other configurations are the same as those of the first or second embodiment.
Is the same as

The operation of the above configuration will be described. In addition,
The basic operation of separating the crushed material supplied into the cylinder 6 together with the compressed air into the heavy material a and the light material b is described in the first embodiment.
Alternatively, since the operation is the same as that of the second operation, the description is omitted.

As shown in FIG. 4, the air fed into the cylinder 6 from an air supply pipe (not shown) forms a spiral rising air flow inside the cylinder 6, and this rising air flow Crushed material (heavy material a, light material b)
, The centrifugal force of the spiral upward air flow acts during the upward movement.

When the heavy object a collides with the collision surface 14b of the collision plate 13b, it rebounds in the direction of the central axis of the cylindrical body 6, falls while slowing down by the force of the weak spiral upward flow on the central axis side, and sorts the lower part. It is discharged from the material discharge unit 12. As in the case of the second embodiment, the light object b rises in a spiral shape while avoiding the vertical direction of the collision plate 13a and the direction of the central axis in a complicated manner.
Is discharged from the outlet 7 of the upper end 6b.

As a result, the crushed material is loosened by the collision with the collision plate 13b, the overlap between the heavy object a and the light object b is reduced, and the heavy object a having a large inertia force has a weak rising airflow and the crushed object is sparse. Since the crushed material rebounds to the region (the crushed material is rising along the inner wall of the outer edge of the cylindrical body due to centrifugal force), the heavy object a can be quickly dropped. Therefore, it is possible to further improve the separation accuracy and the recovery yield of the heavy object a.

(Embodiment 5) As shown in FIG. 5, an air supply pipe 10a is for feeding air into the cylinder 6, and the air supply pipe 10a is provided at least in the vicinity of a communicating portion with the cylinder 6. Is provided with a spiral wall 15. Other configurations are the same as those in the first to fourth embodiments.

The operation of the above configuration will be described. In addition,
The basic operation of separating the crushed material supplied into the cylinder 6 together with the compressed air into the heavy material a and the light material b is described in the first embodiment.
Since the operation is the same as that of the operations from (1) to (4), the description is omitted.

An air supply pipe 10 from a blower (not shown)
a, the crushed material is supplied from the raw material hopper 9 to the compressed air, and when the crushed material is supplied into the cylinder 6 together with the compressed air, the spiral wall 15 is pressed. Thereby, the crushed material and the compressed air are rotated to form an airflow that rotates in the feeding direction. When the airflow rotating in the feed direction enters the cylindrical body 6, the crushed material in a dense state is dispersed in a sparse state by centrifugal force in the feed direction.

Therefore, the crushed material can be supplied to the inside of the cylindrical body 6 while the crushed material is being loosened, and the heavy material a is discharged from the sorted material discharge portion 12 as in the first to fourth embodiments. The light object b is discharged from the discharge port 7.

As a result, since the crushed material is supplied while the crushed material is being loosened inside the cylindrical body 6, when the light-weight object b is sandwiched between the heavy objects a or the entangled material is supplied into the cylindrical body 6. ,
It can be sometimes loosened and dispersed, and the separation accuracy can be further improved.

(Embodiment 6) As shown in FIG. 6, a transparent cover 16 is provided on the cylindrical body 6 so that the inside of the cylindrical body 6 can be seen through. Other configurations are the same as those in the first to fifth embodiments.

The operation of the above configuration will be described. In addition,
The basic operation of separating the crushed material supplied into the cylinder 6 together with the compressed air into the heavy material a and the light material b is described in the first embodiment.
Since the operation is the same as that of the above-mentioned operations, the description is omitted.

The air fed into the cylinder 6 from the air supply pipe 9 forms a spiral rising air flow inside the cylinder 6, and the rising air flow crushes the inside of the cylinder 6 (weight). The object a and the light object b) rise.

The movement of the crushed material in the cylindrical body 6 is seen through the see-through cover 16, and the heavy object a falls from above and the dust collector (not shown) so that the light object b is sucked upward. The balance of a blower (not shown) can be adjusted.

As a result, an appropriate separation state between the heavy object a and the light object b is realized, the inside of the cylinder 6 is set to a negative pressure, and the dust collector and the blower are easily set in a state where dust and the like do not scatter from the sorted object discharge unit 12. Can be adjusted.

(Embodiment 7) As shown in FIG. 7, an ion wind generator (means for preventing electrification) 17 sends an ion wind into the cylinder 6 through an ion wind supply pipe 18 and a supply port 18a. It is configured to supply and prevent electrification in the cylinder 6. Other configurations are the same as those of the first to sixth embodiments.

The operation of the above configuration will be described. In addition,
The basic operation of separating the crushed material supplied into the cylinder 6 together with the compressed air into the heavy material a and the light material b is described in the first embodiment.
Since the operations are the same as those of Steps 6 to 6, the description is omitted.

The air fed into the cylinder 6 from an air supply pipe (not shown) forms a spiral rising air flow inside the cylinder 6, and the rising air flow causes the inside of the cylinder 6 to flow. The crushed material (heavy material a, light material b) rises. Here, the main component of the crushed material is plastic, which has a property of easily charging static electricity by friction in a dry atmosphere.

Therefore, when the crushed material is supplied to the cylinder 6, static electricity is charged due to friction between the crushed materials or the pipes or friction between the crushed materials in the cylinder 6. At this time, the ion wind is supplied from the ion wind generator 17 into the cylindrical body 6 by the ion wind supply pipe 1.
8 and the supply port 18a, the static electricity of the crushed material inside the cylinder 6 can be neutralized and removed.

As a result, the light object b is sandwiched between the heavy objects a (plastic) due to the electrostatic adsorption between the heavy objects a (plastic), the light object b is electrostatically adsorbed on the heavy object a, and
It is possible to prevent dust from being electrostatically adsorbed on the surface, and to improve the separation accuracy.

[0060]

As described above, according to the first aspect of the present invention, a substantially cylindrical tube whose center axis is substantially vertical and a lightweight object connected to the upper end of the tube. A collecting means for collecting, a sorted material discharging portion provided at a lower end portion of the cylindrical body and discharging a heavy object, an air supply pipe provided at a lower portion of the cylindrical body and discharging air substantially obliquely upward in a substantially tangential direction, And a raw material supply means for supplying a raw material to the air supplied from the air supply pipe, so that the air supplied from the air supply pipe generates a spiral rising air flow inside the cylinder along the inner wall of the cylinder. The crushed material supplied from the raw material supply means can be spirally moved by a spirally rising air flow, and the distance that the crushed material actually moves (the distance that the crushed material moves spirally) can be increased. , Can dislodge heavy and light materials in crushed material, It is possible to reduce the overlap in the vertical direction of gravity and lifting power is heavy and can prolong the residence time in approximately balanced state and weight thereof, it is possible to improve the separation accuracy. In addition, the circumferential speed of the inside of the cylinder increases from the center axis to the outer edge, and a spiral airflow with large centrifugal force is generated. Since the force that separates the horizontal component acts, the heavy object moves to the outer edge by the centrifugal force, and the light object has the small centrifugal force and is on the center axis side of the cylinder, so the separation accuracy can be further improved. it can. Therefore, it is possible to provide an inexpensive wind power separation device having a very simple structure and excellent separation accuracy.

According to the second aspect of the present invention, since the collecting means has the internal pressure adjusting means for reducing the internal pressure in the cylinder to a negative pressure, the sorted material is set by setting the inside of the cylinder to a negative pressure. Even when the discharge section is open, dust and the like do not scatter from the cylindrical body, and the container for collecting heavy objects can be easily replaced.

According to the third aspect of the present invention, at least one convex portion is provided at the upper part of the inner surface of the cylindrical body where the vortex inside the cylindrical body due to the air fed from the air supply pipe collides. Of the objects, heavy objects collide with the convex part and the force in the direction opposite to the upward inertia force acts.They fall while stalling and are collected through the sorted material discharge unit, and lightweight objects have small inertia force. Therefore, it flows into the ascending airflow avoiding the convex portion and is collected from above by the collecting means, so that the accuracy of separating heavy and light materials in the crushed material can be further improved. In addition, since the heavy object can be prevented from being discharged from the upper part of the cylindrical body by the inertial force due to the spiral upward airflow, the recovery yield (recovery amount) of the heavy object can be improved.

According to the fourth aspect of the present invention, since the convex portion is inclined such that the surface on the side of the cylindrical body against which the vortex collides is directed downward so as to guide the crushed material inside the cylindrical body. The heavy object collides with the inclined surface of the convex part and can change the upward inertial force to the direction of the sorted material discharge part. In addition, even if the small pieces are small in mass, the number of pieces that are blown up again into the spiral rising air flow is reduced, so that the absolute amount of the crushed material inside the cylinder can be reduced, so that the probability of the light material being sandwiched between the heavy objects is also reduced. . Therefore, the accuracy of separating heavy and light objects can be further improved, and the recovery yield of heavy objects can be further improved.

According to the fifth aspect of the present invention, since the convex portion is inclined such that the surface on the side of the cylindrical body against which the eddy current collides is directed substantially in the direction of the central axis of the cylindrical body, the crushed material is formed. Of which
The heavy object collides with the inclined surface of the convex part, and the centrifugal force of the spiral upward air flow is weak, and the heavy object rebounds in the direction of the central axis of the cylinder, which is a sparse region of the crushed material that rises. The area where there is almost no crushed material that rises while decelerating due to the weak ascending airflow of the central axis falls to the sorted material discharge part, is collected, and overlaps between heavy objects, and is lightened near the central axis of the cylinder. Objects are separated from heavy objects because they are sparse areas of crushed materials, ride on the airflow near the central axis of the cylinder, are discharged and collected from the upper part of the cylinder, and further improve the separation accuracy and the recovery yield of heavy objects. be able to.

According to the sixth aspect of the present invention, since the air supply pipe has a spiral shape at least in the vicinity of the communicating portion with the substantially cylindrical cylinder, the air supply pipe transfers the air from the air supply pipe to the cylinder. When supplying air and crushed material, rotation can be applied to the air and crushed material, the crushed material can be dispersed inside the cylinder, lightweight objects are less caught between heavy objects, and further separated Accuracy can be improved.

According to the seventh aspect of the present invention, since at least a part of the cylinder can be seen through, the movement of the crushed object inside the cylinder can be seen through, and the separation accuracy of the crushed object can be seen. The balance between the lifting force and the gravity, which influences the movement of the crushed material, can be easily adjusted while seeing through the movement of the crushed material, and the separation accuracy of heavy and light objects can be easily adjusted. It is possible to improve the amount of heavy materials to be collected while improving the amount.

According to the eighth aspect of the present invention, since the means for preventing electrification in the cylinder is provided, static electricity charged to heavy objects (plastic) inside the cylinder can be eliminated, so that the heavy objects are separated from each other. When sandwiching lightweight objects during electrostatic adsorption,
It is possible to prevent the light-weight object from being electrostatically attracted to the heavy object, and to improve the separation accuracy.

[Brief description of the drawings]

FIG. 1 is a partially cutaway system configuration diagram of a wind power sorting apparatus according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of a cylindrical body of a wind power sorting apparatus according to a second embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view of a cylindrical body of a wind power sorting apparatus according to a third embodiment of the present invention.

FIG. 4 is a partially cutaway perspective view of a cylindrical body of a wind power sorting apparatus according to a fourth embodiment of the present invention.

FIG. 5 is a partially cutaway perspective view of a cylinder of a wind power sorting apparatus according to a fifth embodiment of the present invention.

FIG. 6 is a perspective view of a cylinder of a wind power sorting apparatus according to a sixth embodiment of the present invention.

FIG. 7 is a partially cutaway essential system configuration diagram of a wind separation device according to a seventh embodiment of the present invention.

FIG. 8 is a cross-sectional view of a conventional wind separation device.

[Explanation of symbols]

 Reference Signs List 6 cylindrical body 6b upper end 6c lower end 8 dust collector (recovery means) 9 raw material hopper (raw material supply means) 10 air supply pipe 12 sorted material discharge section

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Sumi 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 4D021 FA12 FA17 FA22 GA02 GA06 GA12 GA13 GA16 GA21 GA29 HA10

Claims (8)

[Claims] 1. A cylinder having a substantially cylindrical shape having a central axis substantially in a vertical direction, a collection means connected to an upper end of the cylinder to collect a lightweight object, and a heavy object provided at a lower end of the cylinder to discharge a heavy object. A selected material discharge unit, an air supply pipe provided at a lower portion of the cylindrical body and discharging air in a substantially tangential direction in an obliquely upward direction, and a raw material supply unit for supplying a raw material to the air fed from the air supply pipe. Equipped wind separator. 2. The wind separation apparatus according to claim 1, wherein the collecting means has an internal pressure adjusting means for making the internal pressure in the cylinder negative. 3. The wind separation device according to claim 1, wherein at least one convex portion is provided at an upper portion of the inner surface of the cylindrical body with which a vortex inside the cylindrical body due to air fed from an air supply pipe collides. 4. The convex portion is inclined so that the surface on the side of the cylindrical body against which the vortex flows collides is guided in a downward direction of the cylindrical body.
A wind separator as described. 5. The wind separation device according to claim 3, wherein the convex portion is inclined such that a surface on the side where the vortex flows inside the cylindrical body collides is guided in a substantially central axis direction of the cylindrical body. 6. The wind separation device according to claim 1, wherein the air supply pipe has a spiral shape at least in the vicinity of a communication portion with the substantially cylindrical tube. 7. The wind separation device according to claim 1, wherein at least a part of the cylindrical body can be seen through. 8. The wind separation device according to claim 1, further comprising means for preventing charging in the cylinder.