JP2000117194A - Classifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To classify mixed granules in which different kinds of granular materials are mixed precisely by a simple constitution. SOLUTION: An apparatus classifies mixed granules in which different kinds of granular materials are mixed according to their kinds. A disk-shaped rotor 7 rotating around a vertical rotary shaft 6 and rebounding plates 15 arranged on the peripheral side of the upper surface of the rotor 7 are provided, the mixed granules supplied to the upper surface of the rotor 7 are discharged outside by centrifugal force to be brought into collision with the rebounding plate 15 so that the granular materials are classified on the basis of the difference in coefficients of restitution of the materials.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting apparatus for sorting a mixture in which two or more kinds of materials are mixed, and more particularly, to a sorting apparatus such as a building waste material in which wood chips and earth and sand are mixed. The present invention relates to a sorting device that sorts mixed granules in which different kinds of granular materials are mixed by type.

[0002]

2. Description of the Related Art In recent years, in Japan, it is difficult to newly establish a waste disposal site, and from the viewpoint of environmental protection, it is important to reduce waste and to reuse resource waste by recycling.

[0003] In general, when recycling resource refuse, after rough sorting by manual sorting or other sorting, metals such as iron and aluminum, glass,
It is sorted by material such as plastic, concrete waste, earth and sand, wood chips and then recycled. Items that cannot be recycled are incinerated or landfilled.

[0004]

Since the above-mentioned sorting step generally includes a crushing step, the crushing produces a granular material. Then, there is a problem that it is difficult to sort mixed grains in which two or more types of granular materials are mixed. In addition, in the case of mixed grains where wood chips and earth and sand are mixed like building waste, if specific gravity selection is performed using water, the wood chips will float on the water and the earth and sand will settle,
The sorting itself can be easily performed. However, on the other hand, a new problem arises in that sludge must be processed after sorting.

[0005] Therefore, mixed grains in which two or more types of granular materials are mixed are often disposed of in landfills, which is one of the bottlenecks in promoting recycling. Further, when wood chips are contained in the mixed grains that have been landfilled, there is a problem that the wood chips are decayed, the volume is reduced, and land subsidence occurs in the landfill.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional disadvantages, and an object of the present invention is to be able to accurately sort mixed grains in which a plurality of types of granular materials are mixed with a simple structure. An object of the present invention is to provide a sorting device.

[0007]

A first aspect of the present invention is directed to a sorting apparatus for sorting mixed granules in which a plurality of types of granular materials are mixed, according to a first aspect of the present invention. The rotating body 7 includes repulsion plates 15 and 36 disposed on the outer peripheral side of the upper surface of the rotating body 7, and the mixed particles supplied to the upper surface of the rotating body 7 are discharged outward by centrifugal force. The method is characterized in that the material is collided with the repulsion plates 15 and 36 and the granular material is selected based on the difference in the rebound coefficient of the material.

In the sorting apparatus of the first aspect, the mixed particles supplied to the upper surface of the rotating body 7 are discharged outward at a constant speed by centrifugal force and collide with the repulsion plates 15 and 36. In general, different types of materials have different values of the rebound coefficient, so that the granular material after collision behaves differently for each type of material based on the difference in the rebound coefficient. That is, the speed after the collision is different, and the rebound plate 1 after the collision
The arrival distances from 5, 36 will be different. Therefore,
Granular materials can be sorted out by type based on differences in operation after collision (such as speed or reach distance). In this way, it is only necessary to cause the mixed particles to collide with the repulsion plate.

[0009] Further, by utilizing the centrifugal force, the mixed granules are not discharged as a mass of a plurality of granular materials but are discharged as a thin plate. by this,
At the time of collision with the repulsion plates 15 and 36 and after the collision, the granular materials do not collide with each other and a normal rebound operation is not prevented, and the granular material is caused to collide with the repulsion plates 15 and 36 one by one. And high-precision sorting becomes possible. Further, the configuration in which the mixed particles are discharged toward the repulsion plates 15 and 36 by using the centrifugal force makes it possible to reduce the size of the apparatus as compared with a configuration in which the mixed particles are dropped toward the repulsion plate using gravity, for example. It can be made compact.

Further, in the sorting apparatus according to the second aspect, the upper surface of the rotating body 7 is characterized in that the vicinity of the outer periphery is inclined upward.

In the sorting apparatus according to the second aspect, the mixed grains that have moved in the outer circumferential direction of the rotating body 7 due to the centrifugal force receive resistance due to gravity and frictional force on the inclined surface near the outer circumference. Then, in order to be discharged from the rotating body 7, it is necessary to climb this inclined surface, and therefore, the magnitude of the centrifugal force is determined by the force obtained by adding the resistance due to the frictional force of the mixed particles and the gravitational resistance at the inclined surface. Must be larger than Therefore, when the inclination angle with respect to the horizontal plane is increased, the number of revolutions for discharge increases, and the tangential velocity at the time of discharge, that is, the discharge speed, increases. Thus, the mixed grains can be released at a sufficient release rate, and the release rate can be controlled by changing the inclination angle of the inclined surface. Note that the inclined surface only needs to change continuously, and may be linear or curved.

According to a third aspect of the present invention, the repulsion plate is composed of a plurality of plates 15... 15 arranged at regular intervals in the circumferential direction of the rotating body 7. Nos. 15 to 15 are characterized in that the collision surface of the mixed particles is substantially perpendicular to the upper surface of the rotating body 7 and that the granular material after the collision is arranged so as to bounce outward.

[0013] In the sorting apparatus of the third aspect, the repulsion plate 15
.., 15 bounce radially outward from the rotating body 7 at a speed determined by a bounce coefficient specific to each type of material. At this time, the direction after the collision is based on the difference in the collision position (outside or inside) with respect to the repulsion plates 15... 15 with reference to the direction in which the incident angle and the emission angle with respect to the repulsion plates 15. It falls within a certain range, including variations in angles (emission angles) and variations in emission angles based on non-uniform shapes of individual granular materials. Generally, the speed after collision is different depending on the hardness of the material, since the rebound coefficient is generally larger for a harder material and smaller for a softer material, thereby changing the reaching distance after the collision. Therefore, the granular material can be sorted by type according to the difference in the distance from the rotating body 7.

According to a fourth aspect of the present invention, there is provided the sorting apparatus, wherein the plate members 15.
Numeral 5 is characterized in that the position can be adjusted around a vertical rotation axis parallel to the rotation axis 6 of the rotating body 7.

In the sorting apparatus according to the fourth aspect, the horizontal angle of the plate body 15 constituting the repulsion plate is adjusted so that an optimum emission direction is obtained according to, for example, the type of the granular material to be sorted. it can. Thereby, highly accurate sorting can be performed.

According to a fifth aspect of the present invention, there is provided the sorting device, wherein the plate members 15.
Reference numeral 5 is characterized in that the position can be adjusted about a horizontal rotation axis orthogonal to the rotation axis 6 of the rotating body 7.

In the sorting apparatus according to the fifth aspect, the collision surface can be directed upward or downward by adjusting the angle formed between the plate 15 constituting the repulsion plate and the upper surface of the rotating body 7. Thereby, the granular material after the collision can be blown upward or downward instead of in the horizontal direction, so that the material incident on the repulsion plate 15 and the material emitted therefrom are prevented from colliding with each other, and the granular material is reliably prevented. Can be made to fly outward, and highly accurate sorting can be performed.

According to a sixth aspect of the present invention, the repulsion plate is an annular plate body 36, the upper surface of which is an impact surface and the outer periphery thereof is inclined upward. It is characterized by:

In the sorting device of the sixth aspect, since a single so-called donut-shaped plate 36 is arranged on the outer peripheral side of the rotating body 7 to form a repulsion plate, the angle of incidence of the granular material on the repulsion plate 36 is as follows. It will be almost the same. As a result, the direction after the collision of the granular material is constant including only the variation of the emission angle based on the unevenness of the shape of each granular material with reference to the direction in which the incident angle and the emission angle with respect to the repulsion plate 36 are substantially equal. Within the range. Therefore, the plurality of plate members 15... 15
Since the range of the direction in which the granular material flies can be made smaller than that of the repulsion plate made of, the probability that different types of materials reach the same position is reduced, and high-precision sorting becomes possible. Further, since the donut-shaped plate body 36 is inclined so that the outer periphery is upward, the granular material after the collision can be blown upward. Thereby, the rebound plate 36
It is possible to prevent the material entering and exiting from colliding with each other, and to reliably fly the granular material outward, thereby performing highly accurate sorting.

According to a seventh aspect of the present invention, in the sorting apparatus, cylinders 18, 19, and 20 having different radii are arranged coaxially with the rotating shaft 6 outside the rotating body 7, and the distances from the rotating body 7 are respectively set. It is characterized in that a plurality of different storage chambers 16 and 17 are formed, and the granular material is stored in the storage chambers 16 and 17 corresponding to the reaching distance after the collision and sorted.

[0021] In the sorting apparatus according to the seventh aspect, it is possible to efficiently sort the granular material.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a specific embodiment of the sorting apparatus of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a structure of a sorting device 1 according to an embodiment of the present invention, FIG. 2 is a top view showing a part of the sorting device 1 cut away, and FIG. Cutting surface line II
It is sectional drawing seen from I-III.

The sorting device 1 has a base 4 interposed between an upper casing 2 and a lower casing 3 so that
It is roughly divided into two areas up and down. The upper area is a material sorting section, and the lower area is a material discharge section.

The base 4 is arranged so as to be parallel to the horizontal plane, and a bearing 5 is attached to the center of the base 4. The axis of the rotating shaft 6 supported by the bearing 5 is orthogonal to the surface of the base 4. And the rotating shaft 6
A disk-shaped rotating body 7 is mounted on the upper end of the rotating shaft 6 such that the center of the rotating body 7 coincides with the axis of the rotating shaft 6. As a result, the rotating body 7 can rotate around a vertical rotation axis.
The material of the rotating body 7 may be a metal such as iron or a non-metal such as ceramics.

On the other hand, the lower end of the rotating shaft 6 is arranged so as to protrude from the base 4 to the lower region, and a belt wheel 10a is mounted on the lower end. A drive motor 8 is mounted on an outer side surface of the lower casing 3, and a belt wheel 10 b is mounted on a drive shaft 9 of the drive motor 8. Then, the belt wheel 10a and the belt wheel 1
The rotation shaft 6, that is, the rotating body 7 is rotated around the vertical rotation axis by the drive motor 8.

A hopper 12 is attached to a central portion of the upper surface of the upper casing 2. The hopper 12 is formed in a so-called mortar shape so that the diameter of the upper input port is the largest, and gradually decreases toward the lower drop port, and the center line thereof substantially coincides with the axis of the rotating shaft 6. Are arranged as follows. Further, a regulating member 13 is arranged near the drop port. The regulating member 13 is formed in the shape of a truncated cone, and is disposed so that the bottom surface side having the maximum outer diameter is downward, and the bottom surface side is slightly protruded from the drop opening of the hopper 12. Note that the center line of the regulating member 13 substantially coincides with the axis of the rotating shaft 6.

A mounting plate 14, which is a donut-shaped disk, is attached to the outer side surface of the falling port of the hopper 12. On the outer periphery of the mounting plate 14, a plurality of plates 15... 15 constituting a repulsion plate are attached at regular intervals in the circumferential direction. One surface of the plate 15 is a collision surface, and the plate 15 is attached so that the collision surface is substantially orthogonal to the upper surface of the rotating body 7. The collision surface is directed outward so that the granular material after the collision bounces outward from the rotating body 7. Also,
The position of the plate body 15 can be adjusted around a vertical rotation axis parallel to the axis of the rotation shaft 6, and also can be adjusted around a horizontal rotation axis orthogonal to the axis of the rotation shaft 6. And the plate 1
5... 15 are arranged so as to be located on the outer peripheral side of the rotating body 7. The material of the plate 15 may be a metal such as iron or a non-metal such as ceramics.

Further, on the lower part on the outer peripheral side of the rotating body 7, a plurality of annular cross-sectional shapes (in the present embodiment, a mixture of two types of granular materials is selected in order to
Storage chambers 16 and 17 are provided. The storage chambers 16 and 17 each include three cylindrical partition plates 18, 19 and 20 having different radii on the upper surface of the base 4 and the rotating shaft 6.
And mounted coaxially with the axis of Specifically, a storage room 16 is formed by the partition plates 18 and 19 and the upper surface of the base 4, and a storage room 17 is formed by the partition plates 19 and 20 and the upper surface of the base 4.

Next, a structure for discharging the granular material stored in the storage chambers 16 and 17 will be described. The partition plate 1
8, 19, 20 are connected to each other by four flat scrapers 21, 21, 21, 21 arranged at intervals of approximately 90 degrees. An endless rail 22 is formed on the inner surface of the inner partition plate 18 along the circumferential direction. On the other hand, three horizontal holding rollers 23, 23, 23 are rotatably mounted on the base 4 at intervals of about 120 degrees around a vertical rotation axis, and the three holding rollers 23, 23, 23 Is pressed against the rail 22, the position on the radially inner side is regulated. Then, by rotating any one of the holding rollers 23 by the drive motor 24, the partition plates 18 to 20 are rotated.
Rotates together. The position on the radially outer side is regulated by the outer surface of the outer partition plate 20 slidingly contacting the inner surface of the upper casing 2.

In order to rotate the partition plates 18 to 20 smoothly, a plurality of vertical holding rollers 25, 26 are provided.
Is installed. Three vertical holding rollers 25, 2
5 and 25 are mounted on the inner surface of the inner partition plate 18 so as to be rotatable about a horizontal rotation axis at intervals of about 120 degrees. On the other hand, an endless rail 27 is installed on the base 4 in the vicinity of the partition plate 18 along the circumferential direction. Therefore, by pressing the three holding rollers 25, 25, 25 against the upper surface of the rail 27, the position on the lower side in the vertical direction is regulated.

Another three vertical holding rollers 26, 2
6 and 26 are installed inside the upper casing 2 and near the upper end of the outer partition plate 20 so as to be rotatable around a horizontal rotation axis at intervals of about 120 degrees in the circumferential direction. On the other hand, at the upper end of the outer partition plate 20, an endless rail 28 is formed along the circumferential direction. Therefore, by pressing the three holding rollers 26, 26, 26 against the upper surface of the rail 28, the position on the upper side in the vertical direction is regulated.

With the above configuration, the partition plates 18 to
20 rotates together with the scraper 21, and the particulate material deposited on the bottom surfaces of the storage chambers 16 and 17 (the surface of the base 4) is scraped by the scraper 21. Here, as shown in FIG. 3, a discharge port 29 is formed at a predetermined position on the base 4, which is the bottom surface of the storage chamber 16, and the discharge port 29 is formed.
A belt conveyor 30 is installed immediately below the belt conveyor. Therefore, the storage room 16 scraped by the scraper 21
The granular material inside falls down from the outlet 29 and is discharged, and is further discharged outside the sorting device 1 by the belt conveyor 30. Similarly, outlets 31, 31 are formed at predetermined positions in the base 4, which is the bottom surface of the storage room 17, and a belt conveyor 32 is installed immediately below the outlets 31, 31. Therefore, the granular material in the storage room 17 collected by the scraper 21 falls down from the outlets 31 and is discharged, and is further discharged outside the sorting device 1 by the belt conveyor 32.

Next, the sorting operation of the sorting device 1 will be described. The mixed grains to be sorted are put into the apparatus from the hopper 12. The mixed particles, the impact of which has been buffered by the hopper 12, fall onto the upper surface of the rotating body 7. At this time, the mixed particles fall down with the amount of the particles being averaged because the dropping port of the hopper 12 is narrowed by the regulating member 13.
It falls so as to avoid the center of the rotating body 7. The reason for avoiding the center is that the centrifugal force is weak near the center, and there is a possibility that the mixed grains may be deposited.

The rotating body 7 is rotated around a vertical rotation axis at a rotation speed capable of giving a sufficient centrifugal force to the mixed particles so that the mixed particles placed on the upper portion are not retained by the frictional force. . For this reason, the mixed grains move in the outer circumferential direction of the rotating body 7 and are discharged tangentially from the outer circumferential edge of the rotating body 7 as shown in FIG.

Here, as shown in FIGS. 1 and 5B, the outer peripheral edge of the rotating body 7 is inclined so that the outer periphery is upward, so that the mixed particles are discharged from the outer peripheral edge. In
This gradient must be climbed, and the magnitude of the centrifugal force must be greater than the sum of the resistance due to the frictional force between the mixed particles and the upper surface of the rotating body 7 and the resistance to gravity on the inclined surface. Therefore, when the inclination angle of the inclined surface with respect to the horizontal plane is increased, it is necessary to increase the rotation speed of the rotating body 7, and accordingly, the tangential velocity when the mixed particles are discharged,
That is, the release speed also increases. As described above, the emission speed can be controlled by changing the inclination angle of the inclined surface. Note that the inclined surface may be curved or linear.

Further, the mixed grains are ejected sequentially from the top of the inclined surface, so that the mixed grains are discharged in the form of a thin plate. The term “thin plate” refers to a state in which the granular materials are arranged in one layer without being clumped. This means that the granular material collides with the plate body 15 which is a repulsion plate one by one, which is important in improving the accuracy of sorting.

At the time when the mixed grains are discharged, the mixed grains pop out in a tangential direction as shown in FIG. 4, but as shown in FIG. …
15 is arranged, and collides with it, changes its direction and speed, and rebounds. At this time, the direction after the collision is based on the difference in the collision position (outside or inside) with respect to the plate body 15 (the outgoing angle) based on the direction in which the incident angle and the outgoing angle with respect to the plate body 15 are substantially equal. ) And the variation of the exit angle based on the non-uniformity of the shape of each granular material. The speed after the collision is a speed determined by a rebound coefficient determined for each type of material. Here, the rebound coefficient is generally larger for hard materials and smaller for soft materials. Therefore, the speed after the collision differs depending on the hardness of the material, and the reach after the collision also changes.

From the above, the partition plates 18 to 20 arranged at an appropriate distance from the repulsion plate (plate body 15)
The mixed grains can be sorted into two types. That is, the hard material jumps to the outside of the intermediate partition plate 19 and falls into the storage room 17, and the soft material hits the partition plate 19 and then falls into the storage room 16, or directly falls into the storage room 16. In this way, the mixed grains can be sorted into two types. The granular materials collected in the storage chambers 16 and 17 are discharged to the outside of the sorting device 1 by the discharge mechanism described above.

As described above, according to the present embodiment, the mixed grains are repelled at a constant speed using the centrifugal force.
5, the granular material can be sorted out according to the difference in the speed (reach distance) after the collision based on the difference in the rebound coefficient, so that it can be realized with a relatively simple configuration.
Further, by utilizing the centrifugal force, the apparatus can be made compact, and the mixed particles are discharged in the form of a thin plate, so that the granular material surely collides with the plate body 15 one by one. And high-precision sorting becomes possible.

Further, by making the vicinity of the outer periphery of the rotating body 7 an inclined surface, the mixed particles can be released at a sufficient release speed, and the release speed can be controlled by changing the inclination angle of the inclined surface. Therefore, the optimum release rate can be set according to the type of the granular material to be sorted, so that sorting with high accuracy can be performed.

Further, a plate member 15 which is a repulsion plate is provided so that an optimum emission direction can be obtained according to the type of the granular material to be sorted.
Can be adjusted in the horizontal direction, so that sorting with high accuracy can be performed. Further, since the collision surface of the plate body 15 can be directed upward or downward, it is possible to prevent collision between the granular material incident on the plate body 15 and the granular material emitted therefrom, and to reliably move the granular material outward. It can be skipped, and high-precision sorting becomes possible.

FIG. 6 is a sectional view schematically showing a main part of the structure of a sorting device 35 according to another embodiment of the present invention. Since the configuration of the sorting device 35 is similar to the configuration of the above-described sorting device 1, the same components are denoted by the same reference numerals, and detailed description is omitted.

A feature of the sorting device 35 is that one annular plate 36 is arranged on the outer peripheral side of the rotating body 7 as a repulsion plate. The plate 36 is inclined such that the outer periphery is upward. In the sorting device 35, the operation from the time when the mixed particles are thrown in from the hopper 12 to the time when the mixed particles are discharged from the rotating body 7 is the same as that of the sorting device 1.

It should be noted here that, in the sorting device 35, a so-called donut-shaped plate 36 is disposed outside the rotating body 7 to form a repulsion plate.
6 is approximately the same. As a result, the direction after the collision of the granular material is constant, including only the variation of the emission angle based on the non-uniform shape of each granular material, based on the direction in which the incident angle and the emission angle with respect to the plate 36 are substantially equal. Within the range. Therefore, the range of the direction in which the granular material flies can be made smaller than that of the sorting device 1 in which the repulsion plate is constituted by the plurality of plates 15... 15, and different types of materials are mixed in the storage chambers 16 and 17. The probability of being sorted and accommodated is reduced, and sorting with high accuracy is possible.

Since the upper surface of the donut-shaped plate 36 is a collision surface and is inclined so that its outer periphery is upward, as shown in FIG. 6, it is possible to fly the granular material after collision upward. it can. As a result, it is possible to prevent the material incident on the plate 36 from colliding with the material exiting the plate 36, so that the granular material can be reliably flown outward and highly accurate sorting can be performed. The lower surface of the plate 36 may be used as a collision surface and disposed so as to be inclined so that the outer periphery is downward, and the granular material may be caused to fly downward. It is better to skip upward because the difference between the types becomes small and the accuracy of sorting may decrease.

However, the collision surface of the plate 36 is inward (the rotating body 7).
Side), when the inclination angle of the plate body 36 is larger than 45 degrees, the component of the force directed inward in the radial direction at the time of the collision is received, and the granular material after the collision once approaches the rotating body 7. , So that the distance required to jump out beyond the plate 36 is longer than that of the sorting apparatus 1. Therefore, the granular material having a relatively small rebound coefficient may not be able to exceed the plate 36, and even when the granular material jumps out, when the arrival position of the granular material is compared with the radial length of the rotating body 7,
The difference between different types of materials is reduced, and particularly when sorting mixed grains having a small difference in rebound coefficient, the accuracy of the sorting may be reduced.

Therefore, as a countermeasure for solving the above-mentioned inconvenience, the inclination angle of the plate 36 is set as small as possible so as to be close to a horizontal plane, and the plate 36 is What is necessary is just to rotate in the opposite direction. As a result, the component of the radially outward force acting on the granular material is increased, and the granular material after the collision is more likely to fly outward as compared with the case where the plate 36 is stopped. Also, by bringing the collision position of the granular material closer to the upper end of the plate body 36, the granular material after the collision easily jumps out. Therefore, by adopting each of the above measures, the difference in the arrival position between the different types of materials is increased, and the accuracy of the sorting can be increased.

Then, the granular materials sorted into the storage chambers 16 and 17 are discharged by the same discharge mechanism as the sorting device 1. Note that the sorting device 35 can be realized with a relatively simple configuration and can be made compact by utilizing centrifugal force in the same manner as the sorting device 1.

[0049]

As described above, according to the sorting apparatus of the first aspect, the mixed particles collide with the repulsion plate at a constant speed by using the centrifugal force, and the operation after the collision based on the difference in the rebound coefficient ( Since the granular material can be sorted out by type according to the difference in speed or reaching distance, it can be realized with a relatively simple configuration. In addition, by utilizing the centrifugal force, the apparatus can be made compact, and the mixed particles are discharged in the form of a thin plate, so that the granular material can reliably collide with the repulsion plate one by one. And high-precision sorting becomes possible.

According to the second aspect of the present invention, the inclined surface is provided in the vicinity of the outer periphery of the rotating body, so that the mixed particles can be released at a sufficient release speed and the inclination angle of the inclined surface can be changed. Can control the release rate. Therefore, the optimum release rate can be set according to the type of the granular material to be sorted, so that sorting with high accuracy can be performed.

According to the third aspect of the present invention, the mixed particles hitting the repulsion plate rebound radially outward from the rotating body at a speed determined by a rebound coefficient specific to each type of granular material. According to the difference in the distance from the rotating body, the granular material can be sorted by type.

According to the fourth aspect of the present invention, the horizontal angle of the plate constituting the repulsion plate can be adjusted so that the optimum emission direction can be obtained according to the type of the granular material to be sorted. High sorting is possible.

According to the sorting device of the fifth aspect, the collision surface of the plate constituting the repulsion plate can be directed upward or downward, so that the collision between the granular material incident on the repulsion plate and the granular material emitted therefrom. In this way, it is possible to reliably prevent the granular material from being blown outward, thereby enabling highly accurate sorting.

According to the sorting apparatus of the sixth aspect, the angle of incidence of the granular material on the repulsion plate becomes substantially the same by using one so-called donut-shaped plate as the repulsion plate, so that the direction in which the granular material flies Since the range can be reduced, the probability that different types of materials reach similar positions is reduced, and highly accurate sorting can be performed. In addition, since the doughnut-shaped plate body is inclined so that the outer peripheral side thereof is upward, the granular material after the collision can be blown upward,
Collision between the granular material that enters the repulsion plate and the particulate material that exits can be prevented, and the granular material can be reliably flown outward, thereby enabling highly accurate sorting.

According to the sorting device of the seventh aspect, the granular material can be sorted efficiently.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a sorting device according to an embodiment of the present invention.

FIG. 2 is a top view showing a part of the sorting device in a cutaway manner.

FIG. 3 is a cross-sectional view taken along line III-III in FIG.

FIG. 4 is a plan view showing a state in which a granular material is discharged from a rotating body.

FIGS. 5A and 5B are diagrams illustrating a sorting operation in the sorting device, wherein FIG. 5A is a plan view and FIG.

FIG. 6 is a simplified cross-sectional view showing a main part of a sorting device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sorting device 6 Rotating shaft 7 Rotating body 15 Plate (repulsion plate) 16 Storage room 17 Storage room 18 Partition plate 19 Partition plate 20 Partition plate 35 Sorting device 36 Plate (repulsion plate)

Claims (7)

[Claims] 1. A sorting apparatus for sorting mixed particles, in which a plurality of types of granular materials are mixed, according to type, comprising: a disk-shaped rotating body (7) rotating around a vertical rotation axis (6); Repulsion plate (15) arranged on the outer peripheral side of the upper surface of 7)
(36), wherein the mixed particles supplied to the upper surface of the rotating body (7) are discharged outward by centrifugal force to collide with the repulsion plates (15) and (36), and the rebound coefficient of the material A sorting device for sorting a granular material based on a difference between the two. 2. The upper surface of the rotating body (7), wherein the vicinity of the outer periphery is inclined upward.
Sorting equipment. 3. The repulsion plate comprises a plurality of plates (15) arranged at regular intervals in a circumferential direction of the rotating body (7).
.. 15), the plate body (15... 15) is such that the collision surface of the mixed particles is substantially perpendicular to the upper surface of the rotating body (7) and the granular material after the collision bounces outward. The sorting device according to claim 1, wherein the sorting device is arranged. 4. The sorting device according to claim 3, wherein the position of the plate body (15... 15) is adjustable about a vertical rotation axis parallel to the rotation axis (6) of the rotation body (7). apparatus. 5. The position of the plate body (15... 15) is adjustable about a horizontal rotation axis orthogonal to a rotation axis (6) of the rotation body (7). Item 4
Sorting equipment. 6. The rebound plate is an annular plate (36), the upper surface of which is a collision surface, and the plate (36) is inclined so that its outer periphery is upward. The sorting device according to claim 1 or 2, wherein 7. A cylinder (18), (19), (20) having a different radius is arranged coaxially with the rotation axis (6) outside the rotation body (7). A plurality of storage chambers (16) and (17) having different distances from each other, and the storage chambers (16) corresponding to the reach distance after the collision of the granular material.
2. The method according to claim 1, wherein the sorting is carried out by storing in (17).
The sorting device according to claim 6.