JP2001225017A - Pneumatic separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pneumatic separator which eliminates the retention of bag-broken waste and can be operated stably. SOLUTION: The pneumatic separator has an inclined conveyer 15 which receives the bag-broken or roughly crushed bag-broken waste 13 falling from the discharge part 12 of a bag-broken waste conveying means 11 by an inclined conveyance member 14 and conveys it to the lower position side of the member 14, an air nozzle 16 which is installed on the downstream side of the member 14 and ejects compressed air to the waste 13 on the member 14, a lightweight material chute 18 which is placed to adjoin the upstream side end part of the conveyer 15 and recovers lightweight material 17 blown off from the waste 13 by the compressed air ejected from the nozzle 16, and a heavyweight material chute 20 which is placed to adjoin the downstream side end part of the conveyer 15 and recovers heavyweight materials 19 conveyed by the conveyer 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating air from a bag or crushed bag, which can be used for sorting and recovering the bagged waste and recycling. The present invention relates to a wind separation device for bag-breaking waste for removing metallic components (iron, aluminum, copper, etc.) and non-metallic components (stone, glass, etc.) from combustible materials in articles.

[0002]

2. Description of the Related Art As the amount of waste has been increasing year by year, the recycling and effective use of waste has become active in recent years due to the enactment of the Containers and Packaging Recycling Law. When effectively using non-combustible garbage or plastic garbage collected separately,
For example, in the case of non-combustible waste, waste collected at a recycling center or the like is broken or crushed, and valuable resources such as iron and aluminum are collected, and the rest is solidified for use as fuel. Also,
In the case of plastic garbage, a method of removing iron, aluminum, and the like as foreign matter, solidifying and recycling oil, blast furnace injection, coke, and the like has been adopted by a recycling company or the like. In this case, in order to solidify the bag breaking waste, it is necessary to further crush the bag breaking waste. In the coarse crushing step, the bag breaking waste is processed using a machine such as a crusher. I was Even when using a sorting machine dedicated to specific materials such as a magnetic sorting machine or an aluminum sorting machine, metal waste (stainless steel, titanium, nickel, etc.) or non-metal content (ceramics, glass, stone, etc.) ), The crusher blade is damaged and worn in a short period of time when the crushed bag waste is put into the crusher, the solidification equipment downstream of the line is worn, and the purity of the solid Has been a problem.

As a method for solving this problem, Japanese Patent Laid-Open No.
Japanese Patent Publication No. 309286 discloses a wind power sorting apparatus for sorting garbage, which sorts heavy, medium, and light objects by wind power sorting. This wind separation apparatus is an apparatus that blows compressed air from a discharge part of an input conveyor into the air through an air ejection nozzle directed obliquely upward, and blows out a medium-weight or light-weight object to sort. However, since the bag-breaking waste falling in the air has a large vertical component of the falling speed, it is difficult to blow a medium-weight or light-weight object even if a considerable amount of air is blown obliquely upward. In view of this, the present inventor has disclosed, in Japanese Patent Application Laid-Open No. H11-156303, a method and an apparatus for sorting wind of bag-breaking waste, in which a falling bag-breaking waste is once applied to an inclined plate to stall and then wind-sorted. .

[0004] As shown in FIG.
A fixed or vibratingly arranged inclined plate 74 for receiving the bag breaking waste 73 falling from the terminal end portion 72 of the bag breaking waste transport conveyor 71 on the inclined surface 75, and disposed on the lower position side of the inclined plate 74. And the bag-breaking waste 7 falling on the inclined surface 75
3, an air nozzle header 76 capable of blowing compressed air toward the airbag 3, a lightweight object chute 78 provided at the upper end of the inclined plate 74 for storing a lightweight object 77 blown out of the bag breaking waste 73 by the compressed air, A heavy load chute 80 is provided at the lower end of the plate 74 and stores a heavy load 79 in the bag breaking waste 73. Dropped bag-breaking waste 7
3 collides with the inclined plate 74 and temporarily stalls. The light weight 77 is blown off by the compressed air and stored in the light weight chute 78, and the heavy weight 79 slides down the inclined surface 75 of the inclined plate 74 by its own weight and is stored in the heavy weight chute 80. Since the bag-breaking waste 73 can continuously receive the wind force of the compressed air on the inclined plate 74, the light-weight material 77 can be reliably sorted.

[0005]

However, since the above-mentioned wind separation device uses the inclined plate 74 which is fixedly or vibratably arranged, for example, a film containing water, especially a cloth-like material is used. Is the inclined plate 7 as bag-breaking waste 73
When the cloth falls on the inclined plate 74, the cloth-like material may stay on the inclined plate 74 for a long time because the moving speed is low only by the vibration. Then, the bag-breaking waste 7 is placed on the attached cloth.
3 was dropped and overlapped with the cloth-like material and laminated, and these were connected in a chain, so that the inside of the apparatus was sometimes closed. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a wind separator that can stably operate without stagnation of bag-breaking waste.

[0006]

According to the present invention, there is provided a wind separator according to the present invention, which is configured to remove the bag-breaking waste falling from the discharge portion of the transfer means for the bag-breaking or coarsely-crushed bag-breaking waste. An inclined conveyor that receives the inclined conveying member and conveys the conveying member to a lower position side, and an air nozzle that is provided on the downstream side of the conveying member and blows compressed air to the bag breaking waste on the conveying member. A light-weight chute that is adjacent to an upstream end of the inclined conveyor and collects light-weight objects blown from the bag-breaking waste by compressed air blown from the air nozzle; and a downstream end of the inclined conveyor. And a heavy load chute for collecting heavy loads conveyed by the inclined conveyor.

As the inclined conveyor, for example, a slat conveyor (platform conveyor), a table conveyor, a pallet conveyor, a flat-top conveyor, a belt conveyor or the like can be used. It is attached to a conveyor and goes around. For example, in addition to a metal plate such as stainless steel or copper, or a plate-like material such as a hard synthetic resin plate, a thin, flexible metal, hard synthetic resin, or rubber belt is used. can do. The inclined conveying member means that a portion of the orbiting conveying member, which is located above the inclined conveyor and is in a state where the bag-breaking waste can be placed, is inclined.

[0008] Since sorting is performed using an inclined conveyor,
It is possible to forcibly transport the bag-breaking waste attached to the inclined conveyor and prevent the bag-breaking waste from staying on the transporting member. Here, a slat conveyor may be used for the inclined conveyor, and a metal plate may be used for the conveying member. Since a metal plate is used, the strength can be increased. In addition, since the metal plate has a small coefficient of friction, the inclination angle of the inclined conveyor can be reduced, and even if the amount of air to be ejected is reduced, the lightweight material in the bag-breaking waste transferred on the conveying member can be efficiently removed. It can be blown out and sorted.

[0009]

DETAILED 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. As shown in FIG. 1, a wind separator 10 according to an embodiment of the present invention is an example of a bag breaker located above the wind separator 10 or a transfer unit for coarsely crushed bag breakage waste. The bag-breaking waste 13 falling from the discharge unit 12 of the conveyor 11 is divided into a light-weight material 17 made of flammable crushed material such as a plastic product, a metal (iron, aluminum, copper, etc.) and a non-metal (sand, This is a device that sorts out heavy objects 19 made of glass or the like. The details will be described below. A slat conveyor 15, which is an example of an inclined conveyor that conveys falling bagging waste 13, is provided below the discharge unit 12 of the conveyor 11.

The slat conveyor 15 is provided with a rectangular transport flat plate 14 made of a metal plate such as stainless steel, which is an example of a transport member, and is connected continuously over the entire circumference. And
Conveyance plate 14 located above slat conveyor 15
Are inclined so that the upstream side (the right side in FIG. 1) of the moving direction is at the upper position. Conveyor 1
The bag breaking waste 13 dropped from 1 is received by the transport flat plate 14 and transported to a lower position side (left side) of the transport flat plate 14.

Although the size of the slat conveyor 15 depends on the amount of material to be conveyed and the specific gravity of the bulk, both the length and the width are about 1 m, and the slat conveyor 15 is operated at a speed of 1 to 10 m / min. Further, it is preferable that the inclination angle θ of the slat conveyor 15 can be adjusted in a range of 5 to 30 degrees. If the inclination angle θ is smaller than 5 degrees, the heavy object 19 may move to the upstream side and mix into the light object 17. On the other hand, when the inclination angle θ is 30
If it is larger than this, the amount of air necessary to push up the lightweight object 17 increases, and the lightweight object 17 may be mixed into the discharged heavy object 19.

On the downstream side of the transport flat plate 14, the transport flat plate 14
A plurality of air nozzles 16 for blowing compressed air to the upper bag breaking waste 13 are provided at predetermined intervals in the width direction of the slat conveyor 15. A large number of air nozzles 16 are attached to a nozzle header 21 formed of a long tube, and a blower 22 is connected to the nozzle header 21 in communication therewith. The wind speed of the air ejected from the air nozzle 16 is 5 to 20 m /
It is preferable to adjust within the range of sec. 5m / sec
If it is smaller, the sorting efficiency of medium-weight objects will be poor,
If / sec is exceeded, the output of the blower 22 is wasted. At the upstream end of the slat conveyor 15,
A lightweight chute 18 for recovering the lightweight 17 blown off from the bag breaking waste 13 by the compressed air blown from the air nozzle 16 is provided adjacently. Also,
At a downstream end of the slat conveyor 15, a heavy load chute 20 for collecting a heavy load 19 conveyed by the slat conveyor 15 is provided adjacently.

Next, a method of using the wind separator 10 will be described. First, the conveyor 11 and the slat conveyor 15 are driven. Then, the bag-breaking waste 13 in which the lightweight material 17 and the heavy material 19 are mixed is dropped from the discharge portion 12 at the downstream end of the transport conveyor 11 toward the vicinity of the center of the slat conveyor 15. The bag breaking waste 13 that has collided with the transport flat plate 14 loses the vertical component of the falling velocity due to the collision, and enters a stall state. Also, if the heavy object 19 and the light object 17 overlap and fall at the same time, they are scattered by collision, so that they are sorted to some extent. The bag breaking waste 13 that has fallen on the transport flat plate 14 is transported by the driven slat conveyor 15 toward the heavy load chute 20 on the downstream side.

Next, the blower 22 is driven to generate compressed air, and at the same time, is supplied to the nozzle header 21, and is set at a predetermined wind speed from each air nozzle 16 toward the bag breaking waste 13 being conveyed. Blow out compressed air. by this,
The lightweight material 17 in the bag breaking waste 13 is a slat conveyor 15.
And is dropped into the lightweight object chute 18 and collected. The compressed air blown is cyclone 2
3. It is discharged out of the system by the induction blower 25 via the dust collector 24. On the other hand, the heavy material 19 in the bag breaking waste 13 is
It moves downstream while being placed on the transport flat plate 14 and is fed into the heavy load chute 20. Thus, in the present embodiment, since the slat conveyor 15 is used, when the cloth-like material containing water adheres to the transport flat plate 14, or when a large amount of bag-breaking waste 13 falls at one time, Even when staying on the transport flat plate 14, it can be forcibly transported to the downstream side.

The wind separator 10 according to the present embodiment can be applied to a waste treatment plant (not shown).
In a plastics and non-combustible waste recycling plant (waste treatment plant), bag-breaking waste is first charged into a bag-breaking machine and then charged into a bag-breaking or crushing machine to be roughly crushed.
The bag breaking waste taken out of the bag breaking machine or the crushing machine (coarse crushing machine) is transferred to a magnetic separator to remove iron. The bag-breaking waste after iron removal is transferred to the wind separator A, where it is separated into heavy and light materials. The lightweight object is transferred to the crusher and crushed. The crushed lightweight object is transferred to the wind separator B, and is again sorted into a heavy object (foreign matter) and a light object. And, through a solidifying device,
It produces plastic oil, blast furnace injection, coke charge and solid fuel (RDF). In the above-mentioned waste treatment plant, the wind separator 10 can be applied to the wind separators A and B. In the wind separator 10, since slat conveyors are used to forcibly transport bag-breaking waste, there is no need to stop the apparatus to prevent stagnation, and waste is continuously and efficiently processed. be able to.

Although the embodiment according to the present invention has been described above, the present invention is not limited to the above embodiment. For example, the air nozzle has an elongated opening along the nozzle header. Only one may be used. Further, another chute may be provided outside the light-weight chute 18 (in the direction opposite to the slat conveyor) to separate the light-weight thing 17 that has been collected as a light-weight thing and a medium-light-weight thing. Furthermore, it is also possible to reverse the conveying direction of the slat conveyor and operate the slat conveyor with the inclination angle of the conveying plate increased. In this case, the bag-breaking waste attached to the transport flat plate can be collected as a lightweight material.

[0017]

In the wind separator according to the first and second aspects of the present invention, heavy and light materials are separated from the bag breaking waste by using the inclined conveyor, so that the bag breaking waste adhered to the inclined conveyor. Can be forcibly conveyed to prevent bag-breaking waste from staying on the conveying member. In particular, in the wind separator according to the second aspect, since a metal plate is used for the transporting member, the strength against falling bagging waste can be increased, and the friction at the time of transporting the bagging waste can be increased. Since the coefficient is small, the inclination angle of the inclined conveyor is reduced, and the light-weight material in the bag-breaking waste transferred on the conveying member can be efficiently blown off and sorted.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a wind separator according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a wind power sorting device according to a conventional example.

[Explanation of symbols]

10: Wind separator, 11: Conveyor (transfer means),
12: discharging unit, 13: bag breaking waste, 14: transport flat plate (transport member), 15: slat conveyor (inclined conveyor),
16: air nozzle, 17: lightweight, 18: lightweight, 19: heavy, 20: heavy, 21: nozzle header, 22: blower, 23: cyclone, 2
4: dust collector, 25: induction blower

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasuhiko Mori 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka New Nippon Steel Corporation Engineering Business Unit (72) Inventor Mamoru Nishida Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka 46-59 Shin Nippon Steel Corporation Engineering Business Unit (72) Inventor Toru Yasunaga 46-46 Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka 59 Nippon Steel Plant Design Co., Ltd. (72) Inventor Yoshihiro Harada Kitakyushu, Fukuoka 46-59 Nakahara, Tobata-ku, Nippon Steel Plant Design Co., Ltd. (72) Inventor Nobuyuki Mikata 46-59, Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka F-term in Nippon Steel Corporation 4D004 AA18 AA46 AC04 BA05 CA04 CA08 CB03 CB13 CB45 CC02 DA12 4D021 FA02 GA02 GA08 GA11 GA13 GA16 HA01 HA10 JA07 JB02 KA05 LA01 LA05 LA07 MA08 NA02 NA10

Claims (2)

[Claims] 1. A bag breaking or a bag breaking waste falling from a discharge portion of a transfer means for coarsely crushed bag breaking waste is received by an inclined conveying member and conveyed to a lower position side of the conveying member. An inclined conveyor, and an air nozzle provided downstream of the conveying member, for blowing compressed air to the bag breaking waste on the conveying member, and an air nozzle adjacent to an upstream end of the inclined conveyor, from the air nozzle. A light-weight chute for collecting light-weight materials blown from the bag-breaking waste by the blown compressed air, and a weight adjacent to the downstream end of the inclined conveyor for collecting heavy objects conveyed by the inclined conveyor. A wind sorter, comprising: an object chute. 2. The wind separator according to claim 1, wherein a slat conveyor is used for the inclined conveyor, and a metal plate is used for the conveying member.