JP2005066600A - Air classifier and apparatus for treating used plastic film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air classifier capable of being installed on an apparatus for treating used plastic films and separating plastic plates mixed in the plastic films, and to provide the apparatus for treating the used plastic films. <P>SOLUTION: A disintegrated plastic film mixture is charged into a plastic mixture dropping tube, air sucked from the plastic film dropping tube is ejected approximately horizontally on a branch part of a plastic film dropping tube and a plastic plate dropping tube that is branched in an approximately T shape, and the plastic films are blown off toward the plastic film dropping tube to be separated pneumatically. Further, the blown plastic films are molded into granules of a prescribed size. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wind sorter and a used plastic processing apparatus, in particular, a wind sorter suitable for sorting and collecting film plastic from a plastic mixture in which plate plastic is mixed with film plastic and the installation thereof. The present invention relates to an apparatus for processing used film-like plastic.

(Used film plastic processing equipment)
FIG. 3 is a block diagram showing a conventional processing apparatus for used film-like plastic (film-like plastic such as a shopping bag tied in a bale). The processing apparatus makes a used film-like plastic (hereinafter referred to as a film-like plastic) granular to a predetermined size to promote reuse. For example, clogging of transportation piping occurs when air transportation is carried out in the form of a film. Therefore, the size of the air transportation is large enough to be enough to withstand air transportation, and air transportation is carried out to the tuyere tuyeres. It is reused as an auxiliary material (reducing material, etc.) for iron making.

  It should be noted that relatively thick used plastics (hereinafter referred to as plate-like plastics) such as telephone cards and plastic bottles can be pneumatically transported only by crushing, and therefore do not need to be formed into granules. Therefore, the film-like plastic and the plate-like plastic are provided with their respective processing series separately, and the processing capacity is secured in each.

  In FIG. 3, 100 is a crusher for crushing a bale-like film-like plastic into a predetermined size, 200 is a magnetic separator for removing magnetic materials from the crushed film-like plastic, and 300 is magnetic. A crusher for crushing the film-like plastic from which the product has been removed into small pieces of a predetermined size, and a PVC feeder 400 for branching the crushed film-like plastic into what is supplied to the PVC sorter 800 and what is not supplied , 500 is a dryer for drying the crushed film-like plastic (including the film-like plastic from which PVC has been removed in the PVC sorting machine 800), and 600A and 600B are the dried film-like plastics (PVC sorting machine). 800, including a film-like plastic from which PVC has been removed). A granulator for molding into a shape, 700 is a silo for storing film-shaped plastic (hereinafter referred to as granulated plastic), and 800 is a PVC sorter for removing PVC mixed in film-like plastic (wet specific gravity) Sorter).

(Treatment method for used plastic film)
In the used film-shaped plastic processing apparatus (FIG. 3), the film-shaped plastic (which is mixed with plate-shaped plastic) tied in a bale shape is put into the crusher 100 and unwound to a predetermined size. It is crushed and put into the pipe by the cutting screw 110. Then, the crushed film-like plastic (hereinafter referred to as crushed plastic) is transported to the crushed material separator 120 by the transport air from the blower 130 and separated from the transported air by the crushed material separator 120.

  The crushed plastic separated from the transport air is supplied to the magnetic separator 200, and while being transported on the transport belt 210, magnetic materials such as mixed metals are sorted by magnetic adsorption, and the magnetic material is magnetic. On the other hand, the crushed plastic from which the magnetic material has been removed is discharged from the discharge port 230.

  Next, the crushed plastic from which the magnetic material has been removed is supplied to the pulverizer 300 and crushed into small pieces of a predetermined size. The crushed crushed plastic (hereinafter referred to as pulverized plastic) is transported to the pulverized product separator 320 by the transport air from the blower 330 and separated from the transport air by the pulverized product separator 320.

  The pulverized plastic separated from the transportation air is supplied to the PVC feeder 400, and when plastic containing chlorine such as PVC is mixed, it is supplied to the PVC sorter 800, while containing the chlorine such as PVC. When plastic is not mixed, it is distributed by the supply screw 410 so as to bypass the PVC sorter 800.

When plastics containing chlorine, such as PVC, are mixed, the crushed plastic is put into a mixing tank 810, stirred in a specific gravity liquid (for example, water) to form a slurry, and supplied to the PVC sorter 800 Is done.
The PVC sorting machine 800 has a rotating drum and a carry-out screw that rotates at a different rotational speed from the rotating drum in the rotating drum. The slurry supplied to the rotating drum is subjected to centrifugal force so that the plastic containing chlorine and heavier than the specific gravity liquid settles toward the inner wall of the rotating drum, while the plastic lighter than the specific gravity liquid (containing no chlorine) Ascend to the surface of the liquid.
Then, the plastic containing the precipitated chlorine (hereinafter referred to as PVC pulverized plastic) is discharged from the PVC carry-out port 820 by a fin directed in one direction of the carry-out screw, and is transported to a PVC processing series (not shown).
On the other hand, the plastic that does not contain chlorine, which has floated, is discharged from the non-PVC carry-out port 830 by the fins directed in the other direction of the carry-out screw.

  Further, the crushed plastic containing no chlorine such as PVC (the one that bypasses the PVC sorter 800 and the one in which the PVC crushed plastic is removed in the PVC sorter 800, hereinafter referred to as non-PVC crushed plastic) is transported by the blower 420. The air is transported to the non-PVC separator 430, separated from the transport air by the non-PVC separator 430, and charged into the metering feeder 440.

The non-PVC pulverized plastic once stored in the fixed amount feeder 440 is carried out by the cutting screw 450 and supplied to the dryer 500.
The non-PVC pulverized plastic (hereinafter referred to as dry plastic) dried to a predetermined moisture content in the dryer 500 is transported to the dry matter separator 540 by transport air from the blower 530 and transported in the dry matter separator 540. It is separated from the air and stored in the dry matter storage tank 550.

  Then, the dry plastic stored in the dry matter storage tank 550 is supplied to the granulators 500A and 600B by the cutting screws 560A and 560B, and is granulated into particles having a predetermined size. The dried plastic granulated in the granulators 500A and 600B (hereinafter referred to as granular plastic) falls on the transport conveyor 610 and is transported to the cooler 620.

The granular plastic cooled in the cooler 620 (hereinafter referred to as “cooled granulated plastic”) is pneumatically transported to the coolant separator 630, separated from the transported air in the coolant separator 630, and charged into the storage silo 700 for storage. Is done.
Further, the stored cooled granulated plastic is appropriately discharged by the cutting screw 710 and supplied to the particle size sorter 720, and only a predetermined size of the particle size sorter 720 is mounted on the transport conveyor 730. , And put into the dispensing hopper 740.

The air sent by the blower 510 becomes hot air in the hot air generator 520 and is supplied to the dryer 500. Thereafter, it is separated from the dry plastic in the dry matter separator 540 and diffused into the atmosphere via the dust collector 570 and the deodorizer 580.
The transport air separated from the dry plastic in the dry matter separator 540 is combined with the transport air separated in the separator such as the pulverized product separator 320, and used again as transport air, or if necessary, a dust collector. Alternatively, the dust collector 570 and the deodorizer 580 are not installed when they are diffused into the atmosphere via the deodorizer.

  In the separator such as the pulverized product separator 320, the separated transport air is used again as transport air, or is diffused into the atmosphere via a dust collector or deodorizer as necessary.

  Further, when a magnetic material such as metal has been removed in advance, the magnetic separator 200 is not installed. Further, when only film-like plastic not containing chlorine such as PVC is sorted and collected, the PVC separator 430 and the PVC sorter 800 are not installed.

(Selection and collection device)
FIG. 4 is a block diagram showing a conventional plastic waste sorting and collecting apparatus. In FIG. 4, the sorting and collecting apparatus 1000 includes a supply conveyor 1010 that supplies plastic waste (a mixture of film-like plastic and plate-like plastic, etc.) to the vertical air sorter 1020 described below, and plastic waste that has been supplied. Vertical air sorter 1020 that separates film-like plastic and plate-like plastic, etc., transportation pipe 1030 that transports the separated film-like plastic to air separator 1040, and film-like plastic and transportation air. The air separator 1040, the blower 1060 for discharging the transport air after being separated from the film plastic, the air supply pipe 1050 connecting the air separator 1040 and the blower 1060, and the transport air discharged by the blower 1060. Isolate contained dust A dust remover 1080, an exhaust pipe 1070 that connects the blower 1060 and the dust collector 1080, and a deodorizing device 1090 that removes odor from the transported air after dust collection are arranged, and the transported air after deodorization is released into the atmosphere. .

(Vertical air sorter)
FIG. 5 is a side sectional view showing a vertical air sorter installed in a conventional plastic waste sorting and collecting apparatus. In FIG. 5, a vertical air sorter 1020 is composed of a cylindrical body (a plate-like plastic descending portion 1022 and a film-like plastic ascending portion 1023) that is bent once or a plurality of times in a substantially square shape. Air is flowing. Accordingly, in the plastic mixture supplied into the cylinder, the film-like plastic rises with the rising air, while the plate-like plastic (not the film-like plastic) falls.

  That is, the plastic mixture is fed toward the plate-like plastic lowering portion 1022 via the plastic mixture throwing portion 1021 installed obliquely downward. The film-like plastic contained in the plastic mixture rises together with the rising air toward the film-like plastic ascending portion 1023 (range above the position where the plastic mixture throwing portion 1021 of the cylindrical body is installed), and the upper end The film-like plastic discharge port 1024 is discharged.

However, in conventional used plastic processing equipment, used plastic, mainly film-like plastic (shopping bags, etc.), contains plate-like plastic (telephone cards, PET bottles, etc.) in addition to film-like plastic. doing.
For this reason, it is necessary to granulate plate-like plastic (which can be pneumatically transported when reused simply by crushing) into film-like plastic (pneumatically transportable when reused). To the same processing step as in the case of A), and unnecessary granulation work is performed. For this reason, there was a problem that the granulating ability of the film-like plastic which originally needs granulation is lowered.

Further, when the film-like plastic is blocked into a booklet by crushing and is not separated into sheets in the crushed material separator 120 (when transported in the form of a block), the magnetic separator 200 exits the crusher 300. There was a problem that the piping was clogged while entering. In particular, clogging was significant when transported by natural fall.
In addition, there is a problem in that the block is mixed into the plate-like plastic processing series, and the inside of the processing series is separated into sheets during transportation to cause clogging of the transportation piping.

  In addition, when a conventional sorting / collecting device is placed in a conventional used film plastic processing device to sort plate plastic and film plastic and to remove the plate plastic from the processing system, the existing use Since there is a need to install the sorting and collecting device in a limited space for processing plastic film plastics, there is a problem that the transportation piping may be bent and the transportation piping may be clogged, and a dust collector or deodorizer, etc. Due to the accompanying equipment, there is a problem that the apparatus is large and there is no arrangement space.

  That is, in the existing used film plastic processing apparatus (FIG. 3), the plastic mixture throwing portion 1021 of the sorting and collecting apparatus 1020 is connected to the outlet 230 of the magnetic separator 200, and the film plastic of the sorting and collecting apparatus 1020 is connected. When the film-like plastic discharge port 1024 at the upper end of the ascending portion 1023 is connected to the supply port 310 of the pulverizer 300, the supply port 310 is disposed substantially vertically below the discharge port 230 (the crushed plastic can be easily dropped). Therefore, a vertical air sorter 1020 (film-like plastic is discharged from the upper end of the film-like plastic ascending portion 1023) is arranged along a substantially vertical line connecting the discharge port 230 and the supply port 310. I can't.

  For this reason, a vertical air sorter 1020 and an air separator 1040 are installed at a position away from the substantially vertical line, and the film-like plastic is transported to a position away from the substantially vertical line, raised, lowered, and Then, the position of the substantially vertical line is returned again.

  Furthermore, since the incidental installation of the dust collector 1080 or the deodorizing apparatus 1090 is necessary, the apparatus becomes larger, and it is necessary to secure a predetermined space around the existing used film-like plastic processing apparatus (FIG. 3). Arise.

  The present invention has been made to solve the above-described problems, and can be installed in an existing used film-type plastic processing apparatus. The plate-type plastic mixed in the film-type plastic is selected, and further Another object of the present invention is to provide a wind power sorter capable of separating a film-like plastic in a booklet form into sheets, and a used film-like plastic processing apparatus provided with the wind-type sorter.

The wind power sorter of the present invention for solving the above problems is as follows.
(1) A wind power sorter that blows and sorts film-form plastic from a plastic mixture in which plate-form plastic is mixed with film-form plastic,
A plastic mixture drop tube from which the plastic mixture falls;
A film-like plastic drop tube branched from the lower end of the plastic mixture drop tube into a substantially toroidal shape, and the film-like plastic blown off falls;
A plate-like plastic drop tube in which the plate-like plastic falls from the lower end of the plastic mixture drop tube to substantially vertically downward or obliquely downward;
In the branch portion, an air ejection nozzle that ejects air toward the film-like plastic drop tube,
And a blowing means for sucking air in the film-like plastic drop tube and supplying the air to the air ejection nozzle.

(2) In the above (1), the plastic mixture drop tube is arranged substantially vertically,
The film-shaped plastic drop tube forms a convex arc upward, and branches off from the plastic mixture drop tube,
The air jet nozzle jets air in a substantially horizontal direction over a substantially band-like range in a vertical plane toward the branch portion.

  (3) In the above (1) or (2), the wind speed of the air ejected by the air ejection nozzle is 8 to 10 m / sec.

(4) In any one of the above (1) to (3), the mouth of the film-shaped plastic drop tube in the branch portion is approximately 630 mm in the vertical direction,
The air ejecting nozzle ejects air from a lower end of the mouth upward from a position of about 100 mm upward and from the lower end of the mouth upward to a band-like range below a position of about 400 mm. .

  (5) In any one of the above (1) to (4), an auxiliary air ejection nozzle is installed in the plastic mixture dropping pipe and ejects air obliquely upward.

  (6) In any one of the above (1) to (5), from the side wall on the plate-like plastic drop tube side of the plastic mixture drop tube, the mouth of the plate-like plastic drop tube and the film-like plastic drop tube A separating grid is installed obliquely downward toward the dividing portion where the mouth is joined.

  (7) In any one of (1) to (6), the separation grid is installed so as to freely advance and retract.

Furthermore, the processing apparatus of the used film-like plastic of this invention is as follows.
(8) a crusher for crushing a plastic mixture made of used plastic in which plate-like plastic is mixed with film-like plastic into a predetermined size;
The wind power sorter according to any one of the above (1) to (7), which is installed downstream of the crusher and wind-sorts film-like plastic from the crushed plastic mixture,
A crusher installed downstream of the wind power sorter and crushing the wind-screened film-like plastic into small pieces of a predetermined size;
It has a granulator which is installed downstream of the pulverizer and forms a film-like plastic pulverized into small pieces into particles of a predetermined size.

  (9) In the above (8), the film-like plastic formed into a granular shape by the granulator is supplied to a blast furnace as an auxiliary material for iron making.

The wind power sorter and the used film plastic processing apparatus of the present invention have the following remarkable effects.
1) Since the wind power sorter is small, it can be installed between predetermined facilities in an existing used film plastic processing apparatus.
2) Since the air for sorting is circulated and used, there is no need for incidental facilities for releasing the air to the atmosphere.
3) Since the plate-like plastic that does not require granulation mixed in the film-like plastic is removed and only the film-like plastic that requires granulation is supplied to the granulation step, the granulation ability of the film-like plastic is improved.
4) Since the film-like plastic in the form of a booklet is not mixed into the processing series of plate-like plastic, transportation troubles in the processing series of plate-like plastic can be prevented.

[Embodiment 1]
(Constitution)
FIG. 1 is a configuration diagram showing Embodiment 1 of a wind power sorter according to the present invention. In FIG. 1, 1 is a wind power sorter,
10 is a plastic mixture drop tube in which a plastic mixture in which plate-like plastic is mixed with film plastic falls.
20 is a film-like plastic drop tube that branches from the lower end of the plastic mixture drop tube 10 in a substantially toroidal shape, and from which the film-like plastic blown off falls,
30 is a plate-like plastic drop tube from which the plate-like plastic (other than film-like plastic) that falls substantially vertically downward or diagonally downward from the lower end of the plastic mixture drop tube 10;
40 is an air ejection nozzle for ejecting air toward the film-shaped plastic drop tube 20 at the branch portion;
50 is a blower that sucks air in the film-like plastic drop tube 20 and supplies the air to the air ejection nozzle;
61 is connected to the diameter-expanded portion 21 of the film-like plastic drop tube 20 and is used to suck a part of the air in the film-like plastic drop tube 20;
62 is an intake pipe connecting the suction part 61 and the blower 50;
63 is a gate valve installed in the intake pipe 62;
64 is an air supply pipe connecting the blower 50 and the air ejection nozzle 40;
Reference numeral 70 denotes a distribution where the mouth of the film-like plastic drop tube 20 and the mouth of the plate-like plastic drop tube 30 are joined from the side wall (position A in the figure) of the plastic mixture drop tube 10 on the plate-like plastic drop tube 30 side. A separating grid that advances and retracts diagonally downward toward the portion (position B in the figure),
Reference numeral 80 denotes an auxiliary air ejection nozzle that is installed in the plastic mixture dropping pipe 10 and ejects air obliquely upward.

  Then, the upper end of the plastic mixture dropping tube 10 is connected to the equipment of the previous process (for example, the outlet 230 of the magnetic sorter 200 (the outlet of the plastic mixture after the magnetic material is removed)), and the film The lower end 22 of the plastic drop tube 20 is connected to the next process equipment (for example, the supply port 310 of the crusher 300).

  On the other hand, the lower end portion 31 of the plate-shaped plastic drop tube 30 is disposed above a conveyor or a plate-shaped plastic container that reaches a plate-shaped plastic processing line (not provided with a granulating means) (not shown).

  Further, the film-shaped plastic drop tube 20 branches from the plastic mixture drop tube 10 by forming a convex arc. And the lower end of the mouth in this branching part is continued to the mouth of the plate-shaped plastic drop tube 30, and forms a water divide (position B in the figure). Further, the lower end of the film-shaped plastic drop tube 20 is expanded in diameter to form an expanded diameter portion 21, and a suction portion 61 is connected to the expanded diameter portion 21.

(Selection procedure)
Accordingly, the plastic mixture (for example, the plastic mixture from which the magnetic material has been removed) is introduced into the plastic mixture dropping tube 10 from the previous process equipment (for example, the magnetic separator 200), and the auxiliary air ejection nozzle 80 is supplied. It is once blown up by the air flow spouted from. At this time, the plastic mixture adhering to the booklet shape tends to be separated from each other into a sheet shape.

Then, the plastic mixture that has fallen to the branch portion is blown off toward the film-shaped plastic dropping tube 20 by the film-like plastic mixed in the plastic mixture by the air flow ejected from the air ejection nozzle 40, It descends due to the air flow and is supplied to the next process equipment (for example, pulverizer 300).
The film-like plastic that has been blocked in the form of a booklet is blocked by the separation grid 70, guided by the inclination of the separation grid 70, and falls into the film-like plastic drop tube 20.

  Therefore, only the film-like plastic can be supplied to the equipment for the next process (for example, the pulverizer 300). Further, since the film-shaped plastic does not fall into the plate-shaped plastic dropping tube 30, the film-shaped plastic is not mixed into a conveyor (not shown) or the plate-shaped plastic container.

  On the other hand, plate-like plastics (other than film-like plastics) mixed in the plastic mixture fall into the plate-like plastic drop tube 30 without being blown off and are mounted on a conveyor (not shown) or stored in a plate-like plastic container. Is done.

(Air flow)
The downward air flow in the film-shaped plastic drop tube 20 has a reduced velocity at the enlarged diameter portion 21, a part of which is sucked by the blower 50 via the intake pipe 61, and the remaining remaining air is used in the next process. The air is sucked into the equipment (for example, the pulverizer 300) and sucked into the equipment in the next process.
The amount of air sucked by the blower 50 is adjusted by the gate valve 63, and is ejected from the air ejection nozzle 40 toward the film-shaped plastic dropping tube 20 via the air supply pipe 64.

  The air flow ejected for sorting is ejected in a substantially horizontal direction over a band-like range having a predetermined width above the watershed. For example, when the vertical direction distance (distance between position B and position C in the figure) at the branching portion of the film-shaped plastic drop tube 20 is approximately 630 mm, the air ejection nozzle 40 moves the water divide (position B in the figure). The air is blown out substantially horizontally at a wind speed of 8 to 10 m / sec from the position of approximately 100 mm above the water basin and from the position of approximately 400 mm above the watershed to the lower band-shaped range (band width of approximately 300 mm).

  Further, the air flow ejected in the substantially horizontal direction is guided by the inner wall of the upwardly convex arcuate film-shaped plastic drop tube 20 to become a downward air flow. In addition, a downward air flow is induced in the plastic mixture dropping tube 10 with an air flow directed downward after being ejected in a substantially horizontal direction.

  In addition, the lower end portion of the film-shaped plastic drop tube 20 is expanded in diameter to form the expanded diameter portion 21, and the suction portion 61 is connected to the expanded diameter portion 21. Accordingly, the downward air flow is decelerated in the enlarged diameter portion 21, and the decelerated air is sucked into the suction portion 61.

  Further, an auxiliary air jet nozzle 80 is installed on the upper part of the plastic mixture dropping tube 10 and the plastic mixture introduced from the previous process equipment (for example, the magnetic sorter 200) is once blown obliquely upward. Therefore, the plastic mixture which is blocked in a booklet shape or adhered to each other by the blowing up is separated from each other and becomes a sheet shape.

(Separation grid)
The separating grid 70 prevents the film-like plastic adhering to the booklet form from entering the plate-like plastic dropping tube 30, and the film-like plastic enters the processing series of the plate-like plastic, thereby clogging the transportation piping. This is to prevent such troubles. In the present embodiment, the separation grid 70 that advances and retracts obliquely downward is provided. However, the present invention is not limited to this, and the separation grid may be fixed obliquely downward. Further, a separation grid may not be installed.

[Embodiment 2]
(Constitution)
FIG. 2 is a block diagram showing Embodiment 2 of the used film plastic processing apparatus according to the present invention. In addition, the same code | symbol is attached | subjected to this same part as Embodiment 1 (FIG. 1) or a prior art (FIG. 3), and a part of description is abbreviate | omitted. In the second embodiment, the wind power sorter 1 in the first embodiment (FIG. 1) is arranged between the magnetic sorter 200 and the pulverizer 300 in the conventional technique (FIG. 3).

  That is, since the wind power sorter 1 is small and the upper end portion 11 of the plastic mixture drop tube 10 and the lower end portion 22 of the film-like plastic drop tube 20 are on a substantially vertical line, the upper end portion of the plastic mixture drop tube 10 is Is connected to the discharge port 230 of the magnetic sorter 200 (the discharge port of the plastic mixture after the magnetic material is removed), and the lower end 22 of the film-like plastic drop tube 20 is connected to the supply port 310 of the crusher 300. It is connected.

  Therefore, since the wind sorter 1 can be installed without changing the transportation piping of the existing film plastic processing apparatus, the transportation piping is not complicated, and the transportation piping is not clogged. . Furthermore, since the selected air is circulated and used, there is no need to install a dust collector or a deodorizing device for dissipating it into the atmosphere, and there is no restriction on the installation space.

On the other hand, since the lower end portion 31 of the plate-shaped plastic drop tube 30 of the wind power sorter 1 is disposed above the conveyer leading to the plate-shaped plastic processing series (not shown) or above the plate-shaped plastic container, It can be excluded outside the film plastic processing line.
Accordingly, since only the film-like plastic is granulated, the amount of granulation treatment of the film-like plastic increases as much as the plate-like plastic is excluded from the processing series.

Further, the film-like plastic blocked in a booklet shape is blocked from dropping by the separation grid 70 and does not fall into the plate-like plastic dropping tube 30.
In addition, since the auxiliary air jet nozzle 80 is installed and blows up the plastic mixture obliquely upward, those that are blocked in the form of a booklet or attached to each other are separated from each other and are jetted out. It becomes easy to be blown away by air. Therefore, it does not fall into the plate-shaped plastic drop tube 30. For this reason, troubles in pneumatic transportation (for example, clogging of piping) due to the film-like plastic are prevented in the processing series of plate-like plastic.

In addition, when magnetic materials, such as a metal, are removed beforehand, the magnetic separator 200 is not installed. Further, when only film-like plastic not containing chlorine such as PVC is sorted and collected, the PVC separator 400 and the PVC sorter 800 are not installed.
In addition, the transport air in each transport pipe is appropriately gathered or branched, and is circulated or released to the atmosphere.

  As described above, the wind sorter and the used film plastic processing apparatus of the present invention are installed between predetermined facilities of a new or seasonal apparatus as various wind sorters and various used film plastic processing apparatuses. It can be widely used.

It is a block diagram which shows Embodiment 1 of the wind power sorter which concerns on this invention. It is a block diagram which shows Embodiment 2 of the used film-like plastic concerning this invention. It is a block diagram which shows the processing apparatus of the conventional used film-like plastic (film-like plastics, such as a shopping bag, which was tied up in the bale shape). It is a block diagram which shows the sorting and collection | recovery apparatus of the conventional plastic waste. It is sectional drawing of the side view which shows the vertical type | mold air sorter installed in the conventional plastic waste sorting and collection apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Plastic mixture fall pipe 20 Film-like plastic fall pipe 30 Plate-shaped plastic fall pipe 40 Air ejection nozzle 50 Blower 70 Separation grid 80 Auxiliary air ejection nozzle 100 Crusher 200 Magnetic separator 300 Pulverizer 400 PVC feeder 500 Dryer 600A Granulator 600B Granulator 700 Silo 800 PVC sorter

Claims (9)

It is a wind power sorter that blows and sorts a film-like plastic from a plastic mixture in which a plate-like plastic is mixed with the air that jets the film-like plastic,
A plastic mixture drop tube from which the plastic mixture falls;
A film-like plastic drop tube branched from the lower end of the plastic mixture drop tube into a substantially toroidal shape, and the film-like plastic blown off falls;
A plate-like plastic drop tube in which the plate-like plastic falls from the lower end of the plastic mixture drop tube to substantially vertically downward or obliquely downward;
In the branch portion, an air ejection nozzle that ejects air toward the film-like plastic drop tube,
A wind power sorter having air blowing means for sucking air in the film-like plastic drop tube and supplying air to the air ejection nozzle. The plastic mixture drop tube is arranged substantially vertically;
The film-shaped plastic drop tube forms a convex arc upward, and branches off from the plastic mixture drop tube,
2. The wind power sorter according to claim 1, wherein the air ejection nozzle ejects air in a substantially horizontal direction over a substantially band-shaped range in a vertical plane toward the branch portion.   The wind speed sorter according to claim 1 or 2, wherein a wind speed of air ejected from the air ejection nozzle is 8 to 10 m / sec. The mouth of the film-like plastic drop tube at the branch portion is approximately 630 mm in the vertical direction,
3. The air jet nozzle jets air from a lower end of the mouth upward from a position of about 100 mm upward and from a lower end of the mouth upward to a belt-like range below a position of about 400 mm. Or the wind sorter in any one of 3.   The wind power sorter according to any one of claims 1 to 4, wherein an auxiliary air jet nozzle is installed in the plastic mixture dropping pipe and jets air obliquely upward.   Separation grid obliquely downward from the side wall of the plastic mixture drop tube on the side of the plate-shaped plastic drop tube toward the dividing portion where the mouth of the plate-like plastic drop tube and the mouth of the film-like plastic drop tube are joined Is installed, the wind power sorter according to any one of claims 1 to 5.   The wind separator according to any one of claims 1 to 6, wherein the separation grid is installed so as to freely advance and retract. A crusher that crushes a plastic mixture made of used plastic in which plate-like plastic is mixed with film-like plastic into a predetermined size;
The wind power sorter according to any one of claims 1 to 7, which is installed downstream of the crusher and wind-sorts the film-like plastic from the crushed plastic mixture.
A crusher installed downstream of the wind power sorter and crushing the wind-screened film-like plastic into small pieces of a predetermined size;
An apparatus for processing a used film-like plastic, comprising a granulator installed downstream of the pulverizer and molding the film-like plastic crushed into small pieces into particles of a predetermined size. 9. The processing apparatus for used film plastic according to claim 8, wherein the film plastic molded into a granule by the granulator is supplied to a blast furnace as an auxiliary material for iron making.

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