JPH11156303A - Method and apparatus for winnowing burst bag waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly sort lightweight matters from heavy wt. ones by winnowing in a method and apparatus for winnowing burst bag waste. SOLUTION: The burst bag waste 10 falling from a burst bag waste feed conveyor 11 is once reduced in its feed speed by an inclined plate 14 and subsequently blown off by an air nozzle header 15. By this constitution, only lightweight matter is certainly sorted from the burst bag waste 10 to be sent into a lightweight matter chute 18 and crushed by a crusher. Therefore, the sorting efficiency of the lightweight matter 17 can be enhanced and heavy wt. matter 19 is not mixed with the lightweight matter 17 and the durability of the crusher can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for wind separation of bagging waste, which can be used for sorting and collecting and recycling of bagging waste, and more particularly to a method for separating metal from combustibles in bagging waste. (Iron, aluminum, copper, etc.) and non-metallic (sand,
The present invention relates to a method and an apparatus for wind separation of bag-breaking waste for removing glass and the like.

[0002]

2. Description of the Related Art In recent years, as typified by recycling centers and the like, sorting, collection and recycling of waste has been attracting attention, and the use of combustible fuel in waste (RDF) has been called out. ing. By the way, as a processing step in a recycling center or the like, there is a step of crushing and sorting bagged waste, and in this crushing / sorting step, the crushed bagged waste is crushed using a crushing machine such as a crusher. I have.

[0003]

However, the above-described method for crushing and sorting bagged waste has the following problems to be solved. That is, since large foreign metal components (iron, aluminum, copper, etc.) and non-metal components (ceramics, glass, etc.) are present in the above-mentioned bag breaking waste, these bag breaking wastes are crushed by a crushing machine. When the crusher is put into the crusher, the blade of the crusher is worn in a short period of time, which causes a problem that the sorting function on the downstream side of the line is reduced and the purity of the sorted material is reduced.

Japanese Unexamined Patent Application Publication No. 8-309286 discloses a wind power sorting apparatus for sorting garbage, which sorts heavy, medium-weight, and light-weight objects by wind power sorting.

As shown in FIG. 6, the wind separation device D has a nozzle header 81 having a plurality of air ejection nozzles 80 arranged in a line at equal intervals, below a terminal end of a conveyer 83 for introducing dust 82. The air ejection nozzle 80 is arranged obliquely upward. In FIG. 6, 84 is a compressor, 85 is a buffer tank,
86 is a heavy load chute, 87 is a medium heavy load chute, 88
Denotes a lightweight chute and 89 denotes a vibrating sieve.

However, in this wind separation device D, the falling speed of the refuse 82 thrown downward from the end of the feeding conveyor 83 is composed of a horizontal component and a vertical component. In reality, even if a considerable amount of compressed air is blown onto the refuse 82, it may not be possible to effectively blow off heavy or medium-weight objects in the refuse 82 from heavy objects.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method and an apparatus for wind power sorting of bag breaking waste, which can reliably sort light objects from heavy objects by wind power sorting. Aim.

[0008]

According to the present invention, there is provided a semiconductor device comprising:
In the method for sorting bag-breaking waste according to the wind force described above, the bag-breaking waste dropped from the end of the bag-breaking waste transfer means is brought into contact with the inclined surface, and the vertical velocity is stalled. The compressed air is blown upward from below the inclined surface toward the bag waste, to blow off the light weight material in the bag breaking waste upward, and to remove the heavy material in the bag breaking waste from the inclined surface. The wind is sorted by dropping it down.

In another aspect, the present invention provides an apparatus for separating air from a bag, which receives the bag-breaking waste falling from an end of the conveyor for conveying the bag-breaking waste on an inclined surface. Arranged, air nozzle header capable of blowing compressed air toward the bag breaking waste dropped on the inclined surface, and from the bag breaking waste by the compressed air facing the upper end of the inclined plate A light-weight chute for storing the blown-off light-weight material, and a heavy-weight chute provided at a lower end portion of the inclined plate and storing a heavy-weight in the bag-breaking waste.

In a third aspect of the present invention, there is provided a wind power sorting apparatus for bag breaking waste, wherein the inclined plate directs the heavy object downward of the inclined plate. A discharge mechanism for discharging is provided.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

First, referring to FIGS. 1 to 3, an overall configuration of an apparatus A for sorting wind from bag breaking waste according to an embodiment of the present invention will be described. As shown in the figure, below the end portion 12 of a bag breaking waste transport conveyor 11 which is an example of bag breaking waste transporting means for transporting the bag breaking waste 10, the falling bag breaking waste 10 is inclined 13 An inclined plate 14 is provided which is received above. Here, the bag-breaking waste 10 includes a light-weight material 17 made of crushed flammable substances such as plastic products, and a weight made of metal (iron, aluminum, copper, etc.) and non-metal (sand, glass, etc.). Object 19 is included.

Below the inclined plate 14 (lower end side), a long pipe capable of blowing compressed air upward from below the inclined surface 13 toward the bag breaking waste 10 dropped on the inclined surface 13. An air nozzle header 15 consisting of
The air nozzle header 15 includes a number of air ejection nozzles 1.
6 are attached at equal intervals in the axial direction. The compressed air ejection direction of each air ejection nozzle 16 is directed toward the bag breaking waste 10 dropped on the inclined surface 13. The air nozzle header 15 has a blower 2
1 are communicatively connected.

At the upper end of the inclined plate 14, a bag breaking waste 10
Object chute 1 to receive the lightweight object 17 selected from
8 is provided, and the lightweight object 17 can be transferred to the crusher in the next crushing step through the lightweight object chute 18. On the other hand, a heavy load chute 20 for receiving the heavy load 19 selected from the bag breaking waste 10 is provided at the lower end of the inclined plate 14.

Next, a method of air separation of bag breaking waste 10 using the air separation apparatus A for bag breaking waste having the above configuration will be described with reference to FIG. First, the bag-breaking waste transport conveyor 11 is driven, and the heavy goods 19 and the light goods 17 are driven.
The bag breaking waste 10 in a mixed state is dropped from the end portion 12 toward the inclined surface 13 of the inclined plate 14.
The bag-breaking waste 10 colliding with the inclined surface 13 loses the vertical component of the falling velocity due to the collision, and is in a stall state. Further, when the heavy object 19 and the light object 17 fall at the same time, they are scattered by the collision and are sorted to some extent.

Next, the blower 21 is driven to generate compressed air, and at the same time, is supplied to the air nozzle header 15.
Blow compressed air toward zero. As a result, the light-weight material 17 in the bag-breaking waste 10 is reliably blown upward,
It is sent into the lightweight object chute 18. On the other hand, the heavy object 19 in the bag breaking waste 10 falls down along the inclined surface 13 of the inclined plate 14 and is sent into the heavy object chute 20.

As described above, in this embodiment, the bag breaking waste 10 is stalled by the inclined plate 14 and then blown off by the air nozzle header 15, so that only the lightweight material 17 from the bag breaking waste 10 is removed. Sorting can be reliably performed, sent into the lightweight chute 18, and crushed by a crushing machine. Therefore, the sorting efficiency of the light-weight objects 17 can be improved, and the heavy-weight objects 19 are not mixed in the light-weight objects 17, so that the durability of the crushing machine can be improved.

In the above-mentioned method for sorting bagged wastes by wind power, the inclination angle θ of the inclined surface 13 of the inclined plate 14 is 5 to 30.
° is preferable. If the inclination angle θ is smaller than 5 °, the falling angle becomes worse due to the shape of the heavy object 19, and the heavy object 19 moves toward the light object 17 and the light object chute 18.
This is because they may fall inside. On the other hand, when the inclination angle θ is larger than 30 °, the amount of air for pushing up the lightweight object 17 increases, and the lightweight object 17 may be mixed into the discharged heavy object 19. It is.

[0019]

Next, FIG. 2 shows a case where the wind separation apparatus for bag-breaking waste according to the present invention is applied to an actual waste treatment plant B.
And FIG. First, the overall configuration of the waste treatment plant B will be described with reference to FIG.

The crushed waste 21a is put into a bag breaking machine 22 and broken. The bag-breaking waste 22a taken out by the bag-breaking is transferred to a magnetic separator 23 where iron 24 is removed. The bag-breaking waste 22a after iron removal is transferred to a first sorter 25, which is a rough sorter, and is air-sorted into a heavy material 26 and a light material 27. The lightweight object 27 is transferred to a crusher 28 and crushed finely. The crushed lightweight material 27 is sent to the second sorter 28a, and the sand 29, the heavy material 30, and the light material 3
1 and sorted out. Then, the recovered combustibles 32 are taken out from the light-weight material 31, and the solid fuel (RD) is
F) Produce 34 and plastic oil conversion raw materials 35.

In the above-mentioned waste treatment plant B,
The apparatus for wind-sorting waste bags according to the present invention can be effectively applied to the first sorter 25 and the second sorter 28a. Hereinafter, a case in which the wind separator for bag-breaking waste according to the present invention is applied to the first separator 25 will be described with reference to FIG.

As shown in FIG. 3, an end portion 38 of a bag-breaking waste conveying conveyor 37 is supported on an upper portion of a box-shaped machine frame 36 provided on an upper portion of the first sorter 25. Note that one end of an endless transport belt 40 is wound around a drive drum 39 arranged at the end portion 38. A drive pulley 41 is coaxially connected to the drive drum 39.
Is the rotary motor 4 mounted on the upper surface of the box type machine frame 36.
Endless V-belt 4 on output pulley 43 fixed to output shaft 2
4 are interlockingly connected.

An inclined plate 46 having an inclined surface 45 is provided at a position below the box-shaped machine frame 36 and immediately below the terminal end 38 of the bag-breaking waste transport conveyor 37, The inclined plate 46 includes a plurality of elastic members 4 made of a spring or the like.
7, and are supported on a bottom support beam 49 of the box-shaped machine frame 36. A vibration motor 51, which is an example of a discharge mechanism, is attached to the bottom surface of the inclined plate 46 via a bracket 50. Then, by driving the vibration motor 51, the inclined surface 4 of the inclined plate 46 will be described later.
5, a downward moving force can be applied to a heavy object among the bag-breaking wastes dropped on the upper surface.

Below the box-shaped machine casing 36, the inclined plate 46
Immediately below the lower end of the body, a heavy load chute 5 with an open upper end
2 are provided. On the other hand, a light object chute 53 is disposed immediately below the upper end of the inclined plate 46. Inclined plate 46
An air nozzle header 55 having a large number of air jet nozzles 54 in the axial direction is disposed above the lower end of the inclined plate 46. It is oriented towards bag waste.

In the above-described configuration, the bag-breaking waste dropped from the end portion 38 by the driving of the bag-breaking waste transport conveyor 37 falls on the inclined plate 46 vibrated by the vibration motor 51 and stalls. I do. By blowing compressed air from the air nozzle header 55 toward the stalled bag-breaking waste, only the lightweight material in the bag-breaking waste is blown off and sent into the lightweight-material chute 53. On the other hand, the heavy object obtained by removing the light-weight object from the bag-breaking waste is cooperated with the inclined surface 45 provided on the inclined plate 46 and the downward moving force applied to the heavy object by the vibration motor 51, and the heavy object is removed. It will surely and quickly fall into the chute 52.

In order to investigate the wind power sorting effect of the wind power sorting method for bag breaking waste according to the present invention, as shown in FIG. An experiment was performed.

First, the dimensional relationship of the wind separation device A1 will be described. For the inclined plate 56, the total length L1 = 79.
0 mm, horizontal length L2 = 745 mm, inclination angle θ ₁ = 2
0 °. Regarding the feeder 57, the terminal end portion 58, which is the starting point of the raw material dropping, is located at H1 (= 3) from the lower end of the inclined plate 56.
45 mm). The air nozzle header 59 has a height H2 (= 155 m) from the lower end of the inclined plate 56.
m) and at a position retracted by a length L3 (= 227 mm) behind the terminal end 58 of the feeder 57. Moreover, air ejection direction of the air nozzle header 59 has an angle such as the angle theta ₂ is 0 ° to 45 ° from the inclined surface. When the angle θ ₂ is upward from 0 °, the sorting effect is deteriorated as in the case where the inclined plate 56 is not provided. When the angle θ ₂ is larger than 45 °, the air hits the inclined plate 56 and rebounds, so that the air is directed toward the inclined surface. This is because the moving force of the lightweight object is blocked.

Then, the bag-breaking waste 60 falls from the terminal end portion 58 of the feeder 57, falls on the inclined plate 56, and falls and stalls the bag-breaking waste 60 at an air flow of 80 m.
³ / hr (1.3m ³ / min), wind speed 50-150m
/ Sec, the jet air was blown. As a result, it has been found that a light-weight material 61 such as a plastic product can be more effectively selected than a heavy-weight material 62 made of a metal component or a non-metal component. In addition, even when the wind speed is 50 to 150 m / sec, the light weight 61 can be sufficiently blown off, and it has been found that a sufficient wind sorting effect can be obtained even if an inexpensive blower is used without using an expensive compressor.

As a comparative example, as shown in FIG.
A wind separation device C for bag breaking waste having a conventional structure was prepared, and a wind separation test was also performed on this device.

First, the configuration and dimensional relationship of the wind separation device C will be described.
Is provided in front of the vehicle, and a space below the inclined wall 64 is divided into a heavy load chute 66 and a light load chute 67 by an inclined partition plate 65. In addition, an air nozzle header 68 is disposed at a position slightly lower than the terminal end 63 of the feeder 62a. On the other hand, the length L4 of the partition plate 65 is set to 260 mm,
And the effective widths W1 and W2 of the lightweight chute 67 are 3
00 mm, 550 mm, and the end 6 of the feeder 62a.
3 to the height H3 from the effective widths W1, W2 of the heavy load chute 66 and the light load chute 67 to the point where the partition plate 65 intersects.
Is 300 mm, the length L5 from the end 63 of the feeder 62a to the air nozzle header 68 is 50 mm, and the height H from the lower surface of the feeder 62a to the air nozzle header 68 is H.
4 was 190 mm.

Then, the bag-breaking waste 69 is dropped from the terminal end portion 63 of the feeder 62a, and the falling bag-breaking waste 69 is supplied with an air volume of 132 m ³ / hr (2.2 m ³ / min).
As sprayed air. As a result, it was found that the sorting of the light-weight material 70, which is a bag-breaking waste such as a plastic product, from the heavy material 71 made of metal or non-metal was very bad. This is because the velocity vector in the falling direction of the bagging waste 69 is large, so that the ejected air cannot effectively blow off the lightweight material 70 in the bagging waste 69 falling from a high position. Can be

As described above, the present invention has been described with reference to one embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and is described in the claims. It also includes other embodiments and modifications that can be considered within the scope of the matters described.

[0033]

According to the method and the apparatus for sorting wind of bag breaking waste according to the first to third aspects of the present invention, compressed air is blown to the bag breaking waste after the bag breaking waste is stalled by an inclined surface. Therefore, it is possible to reliably sort only the light-weight material from the bag-breaking waste, and then crush it by, for example, a crushing machine. Therefore, the sorting efficiency of light-weight objects can be improved, and the heavy-weight objects do not mix in the light-weight objects, so that the durability of the crushing machine can be improved. Also,
Since the wind speed of the compressed air may be low, an expensive compressor is not required, an inexpensive blower may be used, and a wind power sorting device for bag breaking waste used in the wind power sorting method for bag breaking waste can be manufactured at low cost.

According to a second aspect of the present invention, there is provided an apparatus for separating waste air from a bag, which is provided with an inclined plate for simply receiving the broken bag falling below the end of the conveyor. By simply arranging an air nozzle header below and attaching a light weight chute and heavy weight chute at the upper and lower ends of the inclined plate, it is possible to easily and reliably sort light weight and heavy weight from bag breaking waste. At the same time, since the structure is simple, it can be manufactured at low cost and maintenance is easy.

According to the third aspect of the present invention, the inclined plate is provided with a discharge mechanism such as a vibration motor for discharging a heavy object downwardly of the inclined plate. The operation of sorting heavy objects can be promoted.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the conceptual configuration of a wind power sorting device for bag breaking waste according to an embodiment of the present invention.

FIG. 2 is a block diagram of a waste treatment plant to which a wind separation device for bag breaking waste according to an embodiment of the present invention can be applied.

FIG. 3 is an explanatory diagram of a main configuration of a first sorting machine of a waste treatment plant.

FIG. 4 is an explanatory diagram of a configuration of a wind separation apparatus for bag breaking waste according to the present invention used in an experiment.

FIG. 5 is an explanatory diagram of a configuration of a wind power sorting device for bag breaking waste according to a comparative example used in an experiment.

FIG. 6 is an explanatory view of a conceptual configuration of a conventional wind separation device.

[Explanation of symbols]

A Wind separator for bag breaking waste A1 Wind separator B Waste treatment plant C Wind separator H1 Height H2 Height H3 Height H4 Height L1 Total length of inclined plate L2 Horizontal length of inclined plate L3 Length L4 effective width theta angle of inclination theta ₁ tilt angle theta ₂ angle 10 breakage waste 11 breakage waste conveyor 12 terminating portion 13 inclined surface effective width W2 lightweight product chute length L5 length W1 heavy chute partition plate Reference Signs List 14 inclined plate 15 air nozzle header 16 air ejection nozzle 17 lightweight object 18 lightweight object chute 19 heavy object 20 heavy object chute 21 blower 21a waste 22 bag breaking machine 22a bag breaking waste 23 magnetic separator 24 iron 25 first sorter Reference Signs List 26 heavy load 27 light load 28 crusher 28a second sorter 29 sand 30 heavy load 31 light load 32 recoverable combustible 33 volume reducer 3 Solid fuel 35 Plastic feedstock 36 Box-shaped machine frame 37 Bag-breaking waste transport conveyor 38 Terminal 39 Drive drum 40 Endless transport belt 41 Drive pulley 42 Rotary motor 43 Output pulley 44 Endless V-belt 45 Inclined surface 46 Inclined plate 47 Elasticity Member 48 Elastic member 49 Bottom support beam 50 Bracket 51 Vibration motor (ejection mechanism) 52 Heavy object chute 53 Light object chute 54 Air ejection nozzle 55 Air nozzle header 56 Inclined plate 57 Feeder 58 Terminal part 59 Air nozzle header 60 Waste bag breakage Reference Signs List 61 light weight 62 heavy load 62a feeder 63 terminal end 64 inclined wall 65 partition plate 66 heavy load chute 67 light load chute 68 air nozzle header 69 bag breakage waste 70 light weight 71 heavy load

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Atsushi Kobayashi 46-59, Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Prefecture (72) Inventor Seiji Kugimiya Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka 46 No. 59 Nippon Steel Plant Design Co., Ltd. (72) Inventor Nobuhiko Takahashi 2-3-6 Akasaka, Minato-ku, Tokyo Komatsu Ltd.

Claims (3)

[Claims] 1. A method in which bagging waste falling from an end portion of bagging waste transfer means is brought into contact with an inclined surface, and the speed in a vertical direction is stalled, and squeezed toward the stalled bagging waste. Blowing air upward from below the slope,
While blowing off the light-weight material in the bag-breaking waste upward,
A method of wind power sorting for bag breaking waste, wherein a heavy load in the bag breaking waste is dropped below the inclined surface to perform wind sorting. 2. An inclined plate for receiving bag-breaking waste falling from an end portion of a bag-breaking waste transport conveyor on an inclined surface, and the inclined plate disposed below the inclined plate and dropped on the inclined surface. An air nozzle header capable of blowing compressed air toward bag-breaking waste, and a light-weight chute that is provided at an upper end of the inclined plate and stores a light-weighted material blown from the bag-breaking waste by the compressed air, A heavy load chute disposed at a lower end portion of the inclined plate and storing a heavy load in the bag breaking waste. 3. The apparatus according to claim 2, wherein the inclined plate has a discharge mechanism for discharging the heavy object downwardly of the inclined plate.