JP4871367B2 - Sorting device - Google Patents

Description

  The present invention relates to a sorting apparatus, and more particularly to a sorting apparatus that can sort a mixture containing heavy, lightweight, and fine particles using a roller conveyor having a plurality of rotor disks.

  2. Description of the Related Art Conventionally, a sorting apparatus that sorts a mixture in which various objects are mixed according to the form (physical properties) of the object is known. For example, the sorting device can sort mixed waste containing earth and sand, stones, plastic bags, plastic bottles, empty cans, wood, etc. according to air resistance based on specific gravity, weight, and shape. ing.

  As one mode of this sorting apparatus, there is one using a roller conveyor (see, for example, Patent Document 1). A roller conveyor has a plurality of rotor disks attached coaxially to form a rotor shaft, and a plurality of the rotor shafts are arranged in parallel.

  In this type of sorting apparatus, for example, the roller disk is rotated and driven so as to convey the mixture toward the inclined upper side with the roller conveyor being inclined. As a result, the lightweight material in the mixture is conveyed to the upper inclined side by the rotor disk, the heavy object slides down to the lower inclined side due to its weight, and the fine particles fall downward from the gap between the rotor disks. Selected. Thus, since this roller conveyor has a plurality of rotor disks and performs the selection of the mixture, it is also called a rotor screen.

JP 2003-260414 A

  However, in this roller conveyor type sorting apparatus, further improvement in processing speed and improvement in sorting reliability are desired. The processing speed and reliability largely depend on the rotational speed and outer shape of the rotor disk, the inclination angle of the roller conveyor, and the like. Here, the high reliability of sorting means that there is almost no mixing of light objects on the heavy object side or heavy objects on the light object side, and the ability to reliably select heavy and light objects. To tell.

  For example, if the rotational speed of the rotor disk is increased uniformly to improve the processing speed, even heavy objects such as stone and wood tend to be transported to the upper part of the slope, and heavy objects are mixed on the lightweight object side. End up. Therefore, the reliability of sorting is reduced. On the other hand, if the inclination angle of the roller conveyor is increased to ensure that heavy objects slide down, light objects such as paper scraps and plastic bags will not be able to climb the inclined surface, and light objects will be mixed on the heavy object side. It will be.

  Further, if the rotation speed and the inclination angle are decreased for more reliable sorting reliability, the processing speed is lowered and the processing amount per unit time is reduced.

  The present invention has been made in view of the above circumstances, that is, to provide a sorting apparatus capable of realizing both improvement in processing speed and improvement in sorting reliability at a high level. And

  In order to solve the above problems, a sorting apparatus as an exemplary aspect of the present invention includes an input port for introducing waste, a roller conveyor for conveying waste by rotating a plurality of rotor disks, and rotating a rotor disk. A first object which has a driving means for driving and a holding means for holding the roller conveyor inclined upward in the conveying direction, and conveys the waste to the upper inclined portion by the roller conveyor; A sorting device that sorts a second object that slides down to an inclined lower part and a third object that falls downward from a gap between a plurality of rotor disks irrespective of the roller conveyor. A roller conveyor has a plurality of rotor disks arranged coaxially. A plurality of rotor shafts arranged in parallel in the axial direction from the lower inclined side to the upper inclined side, and the drive means Characterized by rotating the side of the rotor disc and the inclined lower side of the rotor disk at different rotational speeds.

  Since the rotational speed of the rotor disk on the upper slope side and the rotational speed of the rotor disk on the lower slope side are each rotated at different rotational speeds, the processing speed of the sorting device and the improvement of sorting reliability are of a high level. It can be made compatible. For example, when the rotor disk on the inclined upper side is rotated at a higher speed than the inclined lower side, the first object being conveyed to the upper side in the middle of the roller conveyor is conveyed to the upper side at a higher speed and more strongly. Can do. And the 2nd object currently sliding down to the lower side in the middle of a roller conveyor can be slid down more smoothly to the lower side.

  It is possible to reduce the time during which an object having characteristics in the vicinity of the boundary between the first object and the second object stays in the middle of the roller conveyor, thereby realizing higher speed sorting. In addition, it promotes the sliding of objects that have slipped and promotes the transport of objects that have been transported to the upper side, so the first object and the second object can be clearly separated, and the selection reliability Can be improved.

  Of course, depending on the design convenience, the rotational speed of the rotor disk on the inclined upper side can be reduced and the rotational speed of the rotor disk on the inclined lower side can be increased. Thereby, the residence time of the mixture on the roller conveyor can be positively increased. It is possible to prevent the third object from being conveyed or slipped, and to reliably drop the third object downward from the gap of the rotor disk.

  Here, the first object is typically a lightweight object, and examples thereof include paper scraps, plastic bags, cotton dust, small pieces (made of metal, plastic, wood, etc.). The second object is typically a heavy object, such as a rock, an empty can, a plastic bottle, a waste material (here, a relatively large and heavy object made of metal, plastic, or wood). Can be illustrated. The third object is typically a fine-grained material, and can be exemplified by earth and sand, pebbles and the like.

  In at least one of the inclined upper side and the inclined lower side, the rotational speed of the upper rotor disk may rotate faster than the rotational speed of the lower rotor disk.

  Since the rotation speed of the lower rotor disk is relatively low and rotates at a higher speed as it becomes higher, the residence time of the mixture on the roller conveyor can be shortened. Therefore, it is possible to efficiently improve the processing speed and the sorting reliability.

  In the sorting apparatus, it is desirable that the driving means rotationally drives the rotor disk on the upper inclined side at a rotational speed of 1.4 times or more the rotational speed of the rotor disk on the lower inclined side.

  Since the rotational speed of the rotor disk on the inclined upper side is 1.4 times or more the rotational speed of the rotor disk on the inclined lower side, the residence time of the mixture on the roller conveyor can be sufficiently shortened. Therefore, it is possible to efficiently improve the processing speed and the sorting reliability.

  In the sorting apparatus, the driving means includes a rotor disk rotation speed related to substantially half the number of rotor shafts on the inclined upper side and a rotor disk rotation related to the remaining number of rotor shafts on the inclined lower side. It is desirable to rotationally drive at different rotational speeds.

  A boundary portion between the inclined upper side and the inclined lower side having different rotation speeds can be set at a substantially central portion of the roller conveyor. Therefore, it is possible to secure a sufficient distance for sorting both the first object and the second object before reaching the upper end or the lower end of the roller conveyor. The substantially half number means, for example, an integer that is an even number in the total number of rotor shafts, and an integer close to the half in the case that the total number is an odd number. For example, when the total number of rotor shafts is seven, the rotor shafts on the upper slope side may be four, the rotor shafts on the lower slope side may be three, the upper slope side may be three, and the lower slope side may be four. It is good.

  In the sorting apparatus, it is desirable that the inlet is disposed in the vicinity of the boundary between the rotor disk on the inclined upper side and the rotor disk on the inclined lower side.

  Since the insertion port is arranged in the vicinity of the boundary between the inclined upper side and the inclined lower side, that is, in the vicinity of the boundary between the rotor disks having different rotational speeds, the first object thrown into the inclined lower side can be smoothly and quickly It is transported to the upper side of the slope. In addition, the second object that has been thrown into the upper slope side also slides down smoothly and quickly to the lower slope side. Therefore, it is possible to contribute to further improvement in processing speed and improvement in sorting reliability in this sorting apparatus.

  It is desirable that the sorting device further includes a blowing unit that blows air from the lower inclined side toward the upper inclined side at an inclination angle of the roller conveyor or higher than the roller conveyor.

  The mixture charged from the charging port can be appropriately dispersed by the blowing from the blowing means and dropped onto the roller conveyor. At that time, among the objects in the mixture, a low specific gravity object, a lightweight object, an object with high air resistance, and the like can be selectively dispersed to the leeward side.

  For example, with respect to heavy objects such as rocks and waste materials, lightweight objects such as paper scraps and plastic bags can be dispersed to the leeward side (that is, the inclined upper side) with little influence of air blowing. Therefore, before reaching the roller conveyor, the mixture can be roughly sorted, which can contribute to further improvement in processing speed and sorting reliability in this sorting apparatus.

  Further objects and other features of the present invention will become apparent from the preferred embodiments described below with reference to the accompanying drawings.

  According to the present invention, the rotational speed of the rotor disk on the inclined upper side and the rotational speed of the rotor disk on the inclined lower side are rotationally driven at different rotational speeds, thereby improving both the processing speed and the selection reliability. Can be realized in a higher dimension.

It is a structural diagram which shows the outline of the internal structure of the selection apparatus which concerns on embodiment of this invention. It is the front view which looked at the internal structure of the roller conveyor shown in FIG. 1 from the front. FIG. 3 is a two-side view of the rotor shaft shown in FIG. 2.

  A sorting apparatus S according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a structural diagram showing an outline of the internal structure of the sorting apparatus S according to the embodiment of the present invention. FIG. 1 is a view of the inside of the sorting apparatus S viewed from the side. This sorting device S is generally configured to include an insertion port 1, a roller conveyor 2, a motor (driving means) 4, and a cylinder (holding means) 6, and a blower (blower means) 8 is attached to the roller conveyor 2. ing.

  The input port 1 is an opening for supplying waste (mixture) P, and is disposed above the roller conveyor 2. Waste P is discharged from, for example, households, offices, and work sites, and is a lightweight object (first object) P1, such as waste paper, small pieces, plastic bags, and heavy objects (second object) such as rocks, waste materials, and empty cans. ), Fine particles (third object) such as earth and sand and pebbles. The waste P thrown in from the insertion port 1 falls on the roller conveyor 2, and is a lightweight article P <b> 1 that is transported in the transport direction X by the roller conveyor 2, and a heavy article that slides down in the opposite direction −X of the transport direction X. P2 and fine particles P3 falling downward from the gap G (see FIG. 2) of the rotor disk 12 are selected.

  The roller conveyor 2 is inclined and arranged at an inclination angle θ, for example, by a cylinder 6 to be described later, and below the inclined upper side U is for recovering the lightweight object P1 discharged from the upper end 2a of the roller conveyor 2. A stocker T1 is arranged. Below the inclined lower side D, a stocker T2 for collecting the heavy object P2 discharged from the lower end 2b of the roller conveyor 2 is arranged. A stocker T3 for collecting the fine particles P3 falling from the gap G is disposed substantially below the center of the roller conveyor 2.

  The roller conveyor 2 is for conveying a mixture by rotation of a plurality of rotor disks. FIG. 2 is a front view of the internal structure of the roller conveyor 2 as viewed from the front (in the direction of arrow A in FIG. 1). The roller conveyor 2 has a plurality of rotor shafts 10, and in the present embodiment, the roller conveyor 2 has seven rotor shafts 10. The rotor shafts 10 are arranged in parallel with each other along the transport direction X, with the direction orthogonal to the transport direction X of the roller conveyor 2 being the axial direction Y.

  FIG. 3 is a two-side view of the rotor shaft 10. The rotor shaft 10 includes a shaft member 11 and a plurality of rotor disks 12. A plurality of rotor disks 12 are coaxially attached to the shaft member 11 at regular intervals, and rotate together with the shaft member 11. As shown in FIG. 3, the rotor disk 12 has a rounded, substantially quadrangular cross-sectional shape having a top portion 12a and a concave portion 12b. By rotating the rotor disk 12 in the rotation direction α, the rotor 12 can be transported in the transport direction X by flipping the lightweight object P1 by the top portion 12a.

  The rotor disk 12 has a constant thickness t along the axial direction Y. Then, the rotor disks 12 adjacent in the axial direction Y are arranged with a dimensional interval larger than the thickness t. As shown in FIG. 2, the rotor shafts 10 are arranged in parallel along the transport direction X. The rotor shafts 10 are adjacently arranged so that the rotor disks 12 adjacent to each other in the transport direction X are alternately nested. A gap G is formed between the nested rotor disk 12 and the rotor disk 12. And the fine-grained material P3 falls from the gap G.

  A sprocket 9 is attached to the rotor shaft 10 in the vicinity of the shaft end. When the sprocket 9 is engaged with the chain 13, the driving force from the motor 4 is transmitted.

  The motor 4 is for driving the rotor disk 12 to rotate. More specifically, the motor 4 rotates the rotor disk 12 by rotationally driving the rotor shaft 10 via a chain (transmission means) 13. The motor 4 conveys the lightweight object P1 in the conveyance direction X by rotationally driving the rotor disk 12 in the rotation direction α.

  In the present embodiment, the sorting device S includes an upper motor 4a that rotationally drives the four rotor shafts 10 on the inclined upper side U and a lower side that rotationally drives the three rotor shafts 10 on the inclined lower side D. And a motor 4b. The upper motor 4a is driven at a higher speed than the lower motor 4b. As a result, the rotor shaft 10 and the rotor disk 12 on the inclined upper side U are rotated at the rotational speeds of the rotor shaft 10 and the rotor disk 12 on the inclined lower side D. It is designed to be driven at a rotational speed about 1.4 times that of the motor.

  Instead of using the two motors 4, that is, the upper motor 4 a and the lower motor 4 b, the rotor shaft 10 on the inclined upper side U and the rotor shaft 10 on the inclined lower side D are driven at different rotational speeds by one motor 4. It is also possible to do. In that case, the number of teeth of the sprocket 9 related to the rotor shaft 10 on the inclined upper side U engaged with the chain 13 may be made smaller than the number of teeth of the sprocket 9 related to the rotor shaft 10 on the inclined lower side D.

  The cylinder 6 is for holding the roller conveyor 2 so as to be inclined upward in the transport direction X. The cylinder 6 supports the roller conveyor 2 below, and holds the inclined upper side U on the upper side and the inclined lower side D on the lower side. The inclination angle θ can be adjusted by a height adjusting unit (not shown) according to the type of waste P processed by the sorting device S.

  The blower 8 is for blowing air toward the waste P introduced from the input port 1, and is disposed below the input port 1 and above the roller conveyor 2. The blower 8 blows air to the waste P in a direction parallel to the inclination angle θ of the roller conveyor 2 and in the transport direction X (that is, from the inclined lower side D to the inclined upper side U). Yes. The blower 8 may blow toward the waste P at an inclination angle θ or more of the roller conveyor 2.

  The insertion port 1 is disposed above the vicinity of the boundary between the inclined upper side U and the inclined lower side D. In the present embodiment, the four rotor shafts 10 on the inclined upper side U and the three rotor shafts 10 on the inclined lower side D are disposed at an upper position in the vicinity of the boundary. Therefore, the waste P input from the input port 1 is dispersed by the blower 8 and falls onto the roller conveyor 2. At that time, the lightweight object P <b> 1 is strongly affected by the air flow, and flows to the inclined upper side U and falls. On the other hand, the heavy object P2 falls almost directly from the inlet 1 without being affected by the air flow.

  The lightweight object P1 dropped to the inclined upper side U is rapidly conveyed in the conveying direction X by the rotation of the rotor disk 12 on the inclined upper side U having a high rotation speed, and reaches the upper end 2a. And it is discharged | emitted from the upper end 2a, and is collect | recovered in stocker T1. On the other hand, the heavy object P2, which has fallen almost without being affected by the air flow, smoothly slides in the reverse direction (−X direction) of the conveying direction on the rotor disk 12 on the lower inclined side D where the rotational speed is low. To the lower end 2b. And it is discharged | emitted from the lower end 2b, and is collect | recovered in the stocker T2.

  Next, the procedure until the waste P input to the sorting device S is sorted will be described in advance. The motor 4 of the sorting device S starts rotating the rotor shaft 10 and the blower 8 blows air. Has started. First, the waste P is input from the input port 1. The thrown-in waste P is dispersed into the lightweight article P1 and the heavy article P2 by the blower from the blower 8, and falls onto the roller conveyor 2. In that case, most of the lightweight objects P1 fall on the rotor disk 12 on the inclined upper side U, and most of the heavy objects P2 remain substantially straight downward (that is, near the boundary between the inclined upper side U and the inclined lower side D). To fall). Therefore, at this time, the waste P is roughly sorted by the wind of the blower 8.

  The lightweight object P1 dropped on the rotor disk 12 on the inclined upper side U is quickly conveyed in the conveying direction X so as to be repelled by the top 12a of the rotor disk 12 by the high-speed rotation of the inclined upper side U, and the upper end. To 2a. And it is discharged | emitted from the upper end 2a and collect | recovered in the stocker T1.

  Note that some heavy objects P2 may fall on the rotor disk 12 on the inclined upper side U. However, the heavy object P2 starts to slide down by its weight regardless of the conveyance. Since the insertion port 1 is disposed in the vicinity of the boundary between the inclined upper side U and the inclined lower side D, when the heavy load P2 starts to slide down, it immediately moves onto the rotor disk 12 on the inclined lower side D. The rotor disk 12 on the inclined lower side D rotates at a lower speed (a rotation speed of 2/3 or less) than the inclined upper side U. Therefore, the heavy object P2 smoothly slides toward the lower end 2b. The heavy material P2 discharged from the lower end 2b is collected into the stocker T2.

  The heavy object P2 that has fallen substantially straight as it is is dropped near the boundary between the inclined upper side U and the inclined lower side D. The heavy object P2 dropped on the rotor disk 12 on the lower inclined side D smoothly slides down regardless of the rotation in the rotation direction α because the rotation speed of the rotor disk 12 is low. It reaches the lower end 2b and is collected into the stocker T2. The heavy object P2 dropped on the rotor disk 12 on the inclined upper side U also slides down without being conveyed in the conveyance direction X and reaches the lower end 2b, as described above.

  In addition, a part of the lightweight objects P1 may fall on the rotor disk 12 on the inclined lower side D. However, even when the rotational speed of the rotor disk 12 is low, the lightweight object P1 does not slide down on the rotor disk 12, and is gradually transported in the transport direction X while being bounced. If it does so, since it can move immediately on the rotor disk 12 of the inclination upper part U, it will be conveyed to the upper end 2a rapidly as it is.

  In addition, about the fine particle P3, a part falls straight from the inlet 1 as it is, and a part is disperse | distributed to the inclination upper part side U by the ventilation of the air blower 8. FIG. In either case, the fine-grained material P3 falls down from the gap G without being transported or slid down, and is collected by the stocker T3.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these, A various deformation | transformation and change are possible within the range of the summary.

  For example, in the present embodiment, the rotational speed of the rotor disk 12 on the inclined upper side U is 1.4 times the rotational speed of the rotor disk 12 on the inclined lower side D, but of course the rotor disk 12 on the inclined upper side U The number of rotations may be higher than that. The degree of rotation speed ratio between the inclined upper side U and the inclined lower side D depends on the type of waste P to be input, the inclination angle θ of the roller conveyor 2, the shape of the rotor disk 12, and the required processing. This is an item that can be appropriately set according to the speed or the like. In some cases, the rotational speed of the rotor disk 12 on the inclined upper side U may be lower than the rotational speed of the rotor disk 12 on the inclined lower side D. Since the residence time of the waste P on the roller conveyor 2 can be lengthened, the method is suitable when the reliability of the sorting is improved rather than the speeding up of the process, particularly when the fine P3 is surely sorted. It is.

  In the above embodiment, the rotational speed of the rotor disk 12 on the inclined upper side U is 1.4 times the rotational speed of the rotor disk 12 on the inclined lower side D. The rotational speeds of the plurality of rotor disks 12 on the inclined lower side D are the same.

  However, the rotational speed of each of the plurality of rotor disks 12 in the inclined upper side U can be set to rotate at a higher speed on the upper side than on the lower side. Similarly, the rotational speed of each of the plurality of rotor disks 12 in the inclined lower side D can be set so that the upper one rotates faster than the lower one. If necessary, all the rotor disks 12 in the roller conveyor 2 can be configured to gradually rotate at a high speed from the bottom to the top.

  In this way, by performing high-speed rotation in order from the bottom upward, depending on the form of the waste P, it is possible to achieve both higher speed of sorting and higher reliability at a higher level. The rotational speed of each rotor disk 12 can be adjusted by a separate drive motor. For example, a sprocket 9 having a different number of teeth is used for each rotor disk 12 and these are connected by a chain 13. For example, it can be realized by one drive motor.

  Moreover, although the ventilation direction by the air blower 8 is made substantially parallel with the inclination direction of the roller conveyor 2, of course, the inclination where a ventilation direction is still larger may be sufficient. The degree of dispersion can be further increased by blowing air upward toward the inlet 1 side.

  The number of rotor shafts 10, the inclination angle θ of the roller conveyor 2, the shape and rotational speed of the rotor disk 12, etc. are design items that can be set as appropriate. In addition, the boundary between the inclined upper side U and the inclined lower side D is preferably in the vicinity of the center of the roller conveyor 2 in the transport direction X, and it is desirable that the charging port 1 is disposed above the boundary, of course, Can also be appropriately changed according to circumstances.

Using the roller conveyor 2 described in the first embodiment, a waste P sorting test was performed. As waste P, and a volume of 2m ³ lightweight plastic weight plastic (lightweight material) P1 and volume 0.12 m ³ (heavy) P2, conducted screening tests waste P volume 2.12 m ³ as a whole It was.

  In the embodiment, the rotational speed of the rotor disk 12 related to the three rotor shafts 10 on the inclined lower side D is N (rpm), and the rotational speed of the rotor disk 12 related to the four rotor shafts 10 on the inclined upper side U is 1.4 times 1.4N (rpm). Further, as a comparative example, a test was also performed in the case where the rotational speed of the rotor disk 12 on the inclined upper side U was set to N (rpm) which was the same speed as the rotational speed of the rotor disk 12 on the inclined lower side D. In Examples and Comparative Examples, the amount of the lightweight plastic P1 discharged from the upper end 2a side and the amount of the lightweight plastic P1 discharged from the lower end 2b side are summarized in Table 1 below.

In addition, when the waste P was dropped so as to drop in the vicinity of the position of the inclined lower side D close to the inclined upper side U, as shown in Table 1, due to the blowing from the blower 8, the volume of 2 m ³ vol 0.65 m ³ minutes of lightweight plastic P1 of, the volume 0.025 m ³ minutes of weight plastic P2 volume 0.12 m ³ is dropped into the inclined upper side U.

As can be seen from Table 1, in the embodiment, all of the input light plastic P1 is discharged from the upper end 2a side, whereas in the comparative example, 1.35 m ³ of light plastic P1 out of 2 m ³ is the upper end 2a. The remaining 0.65 m ³ has been discharged from the lower end 2b side.

  That is, in the embodiment, the lightweight plastic P1 that has fallen to the inclined lower side D is also transported to the inclined upper side U and discharged from the upper end 2a side, and in the comparative example, the lightweight plastic that has dropped to the inclined lower side D P1 is not sent to the inclined upper side U, but slides down the inclined lower side D as it is and is discharged from the lower end 2b.

The amount (2 m ³ ) of the lightweight plastic P1 discharged from the upper end 2a in the example is about 1.48 times the volume of the amount (0.65m ³ ) of the lightweight plastic P1 discharged from the upper end 2a in the comparative example. . This is because the rotational speed of the rotor disk 12 on the inclined upper side U is 1.4 times the rotational speed of the rotor disk 12 on the inclined lower side D, so that the sorting processing capacity of the sorting device is improved by about 1.48 times. Is meant to do. By increasing the rotational speed of the rotor disk 12 on the inclined upper side U, it is possible to improve the processing capability of the sorting device S, and consequently to reduce the size of the sorting device S without reducing the processing capability. Can do.

α: Direction of rotation θ: Inclination angle A: Arrow D: Lower slope side G: Gap P: Waste (mixture)
P1: Light weight (first object)
P2: Heavy object (second object)
P3: Fine particles (third object)
S: Sorting devices T1 to T3: Stocker t: Thickness U: Inclined upper side X: Conveying direction Y: Axial direction 1: Loading port 2: Roller conveyor 2a: Upper end 2b: Lower end 4: Motor (driving means)
4a: Upper motor (drive means)
4b: Lower motor (drive means)
6: Cylinder (holding means)
8: Blower (blower means)
9: Sprocket 10: Rotor shaft 11: Shaft member 12: Rotor disk 12a: Top 12b: Recess 13: Chain (transmission means)

Claims (1)

An inlet for charging the mixture;
A roller conveyor for conveying the mixture by rotation of a plurality of rotor disks;
Drive means for rotationally driving the rotor disk;
Holding means for holding the roller conveyor inclined upward in the transport direction,
The mixture,
A first object that is a lightweight object that is conveyed to the upper slope by the roller conveyor;
A second object that is a heavy object that slides down to an inclined lower part regardless of the conveyance of the roller conveyor;
A sorting device for sorting into a third object that is a fine particle falling downward from the gaps between the plurality of rotor disks,
The roller conveyor is configured by arranging a plurality of rotor shafts arranged coaxially with a plurality of rotor shafts in parallel in an axial direction from the inclined lower side to the inclined upper side,
Of the plurality of the drive means, the driving means relates to a rotor disk related to substantially half the number of rotor shafts on the inclined upper side, and the rotational speed of the rotor disk related to the remaining number of rotor shafts on the inclined lower side is 1 Rotating and driving at a rotational speed of 4 times or more, and at least one of the upper and lower inclined sides, the rotational speed of the upper rotor disk is rotated faster than the rotational speed of the lower rotor disk,
The inlet is disposed vertically above the boundary between the rotor disk on the inclined upper side and the rotor disk on the inclined lower side;
The heavy load falls on the inclined lower rotor disk, and the lightweight object is strong enough to fall on the inclined upper rotor disk, and the inclination angle of the roller conveyor or more. The sorting apparatus which has the ventilation means which blows toward the said inclination upper part side from the said inclination lower part side by the inclination angle of this below the said inlet and above the said roller conveyor.

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