JP2000117193A - Wind force sorting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain high sorting efficiency with a small amount of air. SOLUTION: Waste plastic crushed pieces to be sorted are charged from above and drop on an air spray table 12 while the drop position is being adjusted by a crushed piece guide means 16. The crushed pieces which dropped on the table 12 are sprayed with air ejected diagonally downward from an air ejecting means 10 and drop downward corresponding to the inclination angle of the table 12. Incombustible foreign matters having larger specific gravity drop forward, and the combustible crushed pieces having smaller specific gravity are flown distantly. Accordingly, the length and angle of a sorting/ selecting means 14 are adjusted corresponding to the drop routes, and the crushed pieces and the incombustible foreign matters are sorted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind separation device for blowing air to a crushed piece, which is an object to be sorted, to remove foreign matter in the crushed piece.

[0002]

2. Description of the Related Art Conventionally, there has been proposed an apparatus for separating combustibles and non-combustible foreign substances in wastes by using wind power. For example, Japanese Unexamined Patent Publication No. 5-273 discloses that crushed building waste input from above the apparatus is blown horizontally through air introduction holes during its free fall to provide a flammable material having a small specific gravity. An apparatus for separating refuse from non-combustible refuse having a large specific gravity is disclosed.

[0003]

However, in the above-mentioned conventional apparatus, there is a problem that the sorting efficiency cannot be increased because the air is blown while the crushed waste is freely falling. .

[0004] Further, since the direction of the air blown to the waste is set to the horizontal direction, a large wind pressure and a large amount of air are required in order to oppose the gravity, even when flying combustible dust having a small specific gravity. There was also.

[0005] The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a wind separation device capable of obtaining high selection efficiency with a small amount of air.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a wind power sorting apparatus for sorting foreign matter mixed in crushed pieces as crushed sorting objects by a wind force during a falling process. There is an air blowing means for blowing air from a slit-shaped outlet, and a shard disposed in front of the slit-shaped outlet with an obliquely downward inclination to receive crushed fragments falling from above, and to the outlet. Air blowing table for blowing the air blown from the air, and sorting and sorting means for sorting the crushed pieces that are blown by the air blowing table and fall down, and sort them with foreign matter according to the falling path, and It is characterized by.

[0007] Further, in the above-mentioned wind force sorting device, the air blowing table is characterized in that the inclination angle thereof is adjustable.

[0008] The above-mentioned wind separation device further includes crushed piece guide means installed above the air blowing table for dropping the crushed pieces toward the air blowing table. It is characterized in that it is configured so that the drop position on the table can be adjusted.

Further, in the above-mentioned wind power sorting apparatus, the crushed piece guiding means is constituted by an inclined table, and the inclination angle thereof is adjustable.

[0010] Further, in the above-mentioned wind power sorting device, the sorting and sorting means is constituted by a plate-shaped member, and the length thereof can be changed in order to adjust the sorting according to the falling path of the crushed pieces. .

Further, in the above-mentioned wind separation device, the angle of the plate member with respect to the falling path of the crushed pieces can be adjusted.

[0012]

Embodiments of the present invention (hereinafter referred to as embodiments) will be described below with reference to the drawings.

FIG. 1 is a diagram showing a configuration of a wind power sorting apparatus according to the present invention. In the present invention, the object to be sorted is waste plastic waste mixed with incombustible foreign matter.

In FIG. 1, crushed waste plastic waste (hereinafter, referred to as crushed pieces) is fed from above a wind power sorting device by a vibration feeder or the like. The input crushed pieces receive the air from the blower, and fall into the air blowing area of the air blowing means 10 that blows the air obliquely downward. In front of the air outlet of the air blowing means 10, an air blowing table 12 inclined obliquely downward is provided adjacent to the air blowing means 10. The crushed pieces that have fallen from above are received on the air blowing table 12, where the air blowing means 1
Blowing air is blown from a blowing port of “0”.
As described above, the air blowing table 12 is inclined obliquely downward, and when air is blown obliquely downward from the air blowing means 10, the crushed pieces also fall obliquely downward. As described above, the air blowing table 12 has the function of changing the falling direction of the crushed pieces that have fallen from above. The air blowing table 12 is configured so that the inclination angle can be adjusted, and according to the specific gravity of the crushed pieces to be sorted, etc.
The direction of the fall can be adjusted. Air blowing means 1
The direction of the air blown out from 0 does not necessarily have to be obliquely downward. A configuration in which air is blown out in the horizontal direction and the direction of air is appropriately adjusted by an air guide (not shown) may be employed.

The crushed pieces on which the air blown from the air blowing means 10 is blown on the air blowing table 12 fly different distances according to the specific gravity. In other words, the flammable crushed pieces having a small specific gravity are thrown far away,
On the other hand, the non-combustible foreign matter having a large specific gravity falls toward the front. Therefore, the crushed pieces that fall obliquely downward due to the air being blown are made into non-combustible foreign matters according to the difference in the falling path determined by the speed of the blown air, the above-described inclination angle of the air blowing table 12 and the specific gravity of the crushed pieces. And can be sorted out. For this purpose, a sorting and sorting means 14 for sorting and sorting combustible crushed pieces and non-combustible foreign matter is provided in the middle of the fall path of the crushed pieces. The sorting / selecting means 14 is formed of, for example, a plate-like member inclined obliquely downward like the air blowing table 12.
In order to properly adjust the selection of the crushed pieces according to the specific gravity or the like, the length and the inclination angle are configured to be adjustable.

As described above, in the wind separation device according to the present invention, the air is blown obliquely downward from the air blowing means 10, and the air blowing table 12 for blowing the air to the crushed pieces is also inclined obliquely downward. Further, the sorting and sorting means 14 is also inclined obliquely downward according to the crushed piece falling path. With such a configuration, the crushed pieces are once received by the air blowing table 12, and the air is blown obliquely downward from a short distance in a state where the falling speed is almost zero, so that the energy of the blown air can be more effectively used. It can be used to increase the sorting efficiency. Furthermore, since the blowing direction is obliquely downward, the falling motion due to gravity can be effectively used, so that the amount of air blown to the crushed pieces can be reduced.

Further, since the inclination angle of the air blowing table 12 and the length and the inclination angle of the sorting / selecting means 14 can be changed, fine adjustment can be performed in accordance with the specific gravity of the crushed pieces to be sorted. Efficiency can be further increased.

It is also preferable to provide crushed piece guide means 16 above the air blowing table 12 for dropping the crushed pieces falling from above toward the air blowing table 12. The crushed piece guide means 16 is configured as an inclined table inclined obliquely downward, and can be formed of, for example, a plate-shaped member. This inclination angle can be adjusted, whereby it is possible to adjust to which position on the air blowing table 12 the crushed pieces are dropped. As described above, the crushed piece guiding means 16 reduces the falling speed of the crushed pieces falling from above and reduces the blasted pieces from the air blowing speed from the air blowing means 10 on the air blowing table 12 to the maximum. It has the effect of dropping near the air outlet.

FIG. 2A is a front view of the air blowing means 10, and FIG. 2B is a cross-sectional view taken along the line BB of FIG. 2A.

In FIG. 2A, the air blowing means 1
Reference numeral 0 denotes an air header 18 and a slit-shaped outlet 20 provided in the air header 18 in a horizontal direction. As shown in FIG. 2B, the outlet 20 is formed at a position where air can be blown obliquely downward by a certain angle θ from the horizontal direction. The air header 18 is supplied with air from a blower. Air header 1
Since there is a predetermined volume in 8, the pressure fluctuation of the blower can be reduced, and the blowing speed of the air from the slit-shaped blowing port 20 can be made uniform. Thereby, air can be uniformly blown to the crushed pieces present on the air blowing table 12, and the crushed piece sorting efficiency can be further increased. By forming the air outlet 20 in a slit shape, the air blowing speed can be further increased, and a high sorting efficiency can be obtained even with a small amount of air.

The value of the inclination angle θ of the outlet 20 is determined by the direction in which the crushed pieces are thrown and the distance.
It is considered that the width of the slit is preferably about 1 to 3 mm, but this is also appropriately determined according to the specific gravity of the crushed pieces.

The non-combustible foreign matter selected as described above is received in a container 22 or the like as shown in FIG.
The crushed pieces of waste plastic from which incombustible foreign matter has been removed are transported to the next step by transport means 24 such as a belt conveyor, and it is also preferable to provide a magnetic separator 26 in the middle. As a result, it is possible to finally remove the metallic incombustibles that could not be sorted by the wind separator,
It can complement the sorting efficiency.

The crushed pieces of waste plastic mixed with non-combustible foreign substances as shown in Table 1 were introduced into the wind separation apparatus according to the present invention configured as described above, and the sorting efficiency was measured.

[0024]

[Table 1] The sorting efficiency of the bolt-shaped and cubic incombustible foreign substances shown in Table 1 was able to achieve almost 100%. Also, even in the case of a plate-like non-combustible foreign material, a sorting efficiency of almost 90% could be achieved. It should be noted that, even with respect to the plate-like noncombustible foreign matter, if the magnetic force was sorted by the magnetic force sorter 26, the sorting efficiency could be made 100%.

[0025]

As described above, according to the present invention,
The air blown out from the air blowing means can be blown at a very short distance to the crushed pieces placed on the air blowing table, so that high-speed air can be blown uniformly.
As a result, the sorting efficiency can be improved. Also,
Since the blowing direction of the air is obliquely downward, the kinetic energy against gravity is small, and the amount of air used can be reduced.

Further, by appropriately adjusting the inclination angles of the air blowing table and the sorting and sorting means, more accurate sorting can be performed.

Further, the crushed piece guide means can cause the crushed piece to drop to the most appropriate position on the air blowing table, thereby also improving the sorting efficiency.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a wind power sorting device according to the present invention.

FIG. 2 is a diagram showing a configuration of air blowing means used in the wind power sorting device shown in FIG.

[Explanation of symbols]

10 air blowing means, 12 air blowing table, 14
Sorting and sorting means, 16 crushed piece guiding means, 18 air header, 20 outlet, 22 containers, 24 transport means, 26 magnetic sorting machine.

Continued on the front page (72) Inventor Shinji Watanabe 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation F-term (reference) 4D021 FA02 GA02 GA10 GA13 GA16 GA18 GA21 GB03 HA10 JA07 KA11 KA12 LA07 LA08 LA10 MA08

Claims (6)

[Claims] An air blowing means for separating foreign matter mixed in crushed crushed pieces as sorting objects by a wind force in a falling process thereof, comprising: an air blowing means for blowing air from a slit-shaped blowing port; In front of the slit-shaped outlet, disposed at an angle obliquely downward, receives crushed pieces falling from above, and an air blowing table for blowing the air blown out from the outlet to this, A wind separation device comprising: a sorting and sorting unit that sorts crushed pieces, which are blown with air by an air blowing table and fall down, with foreign matter according to the falling path thereof. 2. The wind separation device according to claim 1,
The air blowing device according to claim 1, wherein an inclination angle of the air blowing table is adjustable. 3. The crushed piece sorting apparatus according to claim 1, further comprising: crushed piece guide means installed above the air blowing table for dropping crushed pieces toward the air blowing table. The guide means is configured to be capable of adjusting a position of dropping onto the air blowing table, and is provided with a wind separation device. 4. The wind separation device according to claim 3,
The crushed piece guiding means is constituted by an inclined table, and the inclination angle thereof is adjustable. 5. The wind separation device according to claim 1,
The wind sorting device is characterized in that the sorting and sorting means is formed of a plate-like member, and the length thereof can be changed in order to adjust sorting according to the falling path. 6. The wind separation device according to claim 5, wherein
The plate-like member is adjustable in angle with respect to the falling path.