JP2006326463A - Pneumatic separator, resin recycling method and recycled resin product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pneumatic separator which has a simple structure and is capable of assuring a high treatment capability while sorting a foreign matter or lightweight matter included in a resin crushed matter with high accuracy, to provide a resin recycling method and to provide a recycled resin product. <P>SOLUTION: The pneumatic separator is provided with a sorting tube 3 and a dust collecting device 20 which is connected with the sorting tube, wherein the sorting tube has a recovery part 4 to recover the lightweight matter among the matters to be sorted, which is located at one part side, a discharge tube 6 to discharge the heavyweight matter among the matters to be sorted, which is located at the other part side, a charge tube 2 to charge the matter to be sorted, which is located between the recovery part 4 and the discharge tube 6 and a slit 10 to agitate the matter to be sorted, which is located between the discharge tube 6 and the charge tube 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a wind sorting apparatus, a resin recycling method, and a recycled resin product, and more particularly to a wind sorting apparatus, a resin recycling method, and a recycled resin product that are used for a resin crushed material that is crushed by a resin crusher in a recycling plant or the like. Is.

  In recent years, interest in environmental issues has increased, and resin material recycling has become active. In a general processing method for resin material recycling, (a) firstly, the waste resin is separated into a single material, (b) an appropriate particle size is prepared with a dedicated resin crusher, and (c) an extruder is used. After being processed into a pellet by rudder processing, (d) it is molded into an arbitrary shape by a molding machine. In the crushing treatment of the waste resin, film-like, foam-like or powdery foreign matters are often mixed in the crushed material. It is well known that the physical properties of the recycled resin are greatly reduced if the resin crushed material is pelletized with foreign matter mixed therein. Depending on the material, if the resin is crushed, scraping called “burrs” occurs. When pelletizing the resin, the burrs themselves do not have a significant effect on the physical properties of the recycled resin. However, dust and foam are adhered by the protrusions of the burrs and static electricity, which deteriorates the physical properties of the recycled resin. In other words, foreign substances and burrs are not preferable in the recycling of waste resin.

  Film-like, foam-like or powder-like foreign matters and burrs are lighter than general resin crushed materials, and wind power sorting devices have been used for a long time to sort out and remove these lightweight materials. The wind power sorter is a drag generated by the relative speed difference between the object to be sorted and the ambient fluid (the flow direction component of the force exerted by the fluid on the object. At this time, the object has a component perpendicular to the flow direction. Lift is also generated, but the object changes its attitude in the air with this lift (because it is not fixed), so lift can be ignored) and the difference between the resultant force of the weight of the object to be sorted Sort by using. At this time, a number of devices have been proposed that perform sorting after applying a solution effect to the object to be sorted or while applying the solution effect. Due to this unraveling effect, the intertwined massive objects to be sorted can be crushed and dispersed to greatly improve the sorting accuracy. Furthermore, the removal efficiency of fine foreign matters adhering to the surface of the object to be sorted is improved, which contributes to the high purity of the object to be sorted.

  2. Description of the Related Art In recent years, a cylindrical wind power sorter that excels in space saving and sorting accuracy has attracted attention, and various types of devices have been proposed. For example, there is a method of sorting light and heavy objects by putting a material to be sorted into a cylinder installed in a vertical direction from the side and sending an ascending air flow whose air volume can be adjusted from a sorting nozzle below the cylinder ( Patent Document 1). By adopting such a configuration, it is possible to solve the problem by applying a vertically upward ascending air flow that is opposite to the falling motion direction of the object to be sorted, that is, the vertically downward direction, to the object to be sorted. For this reason, although it is a simple structure, sorting accuracy can be improved (refer to patent documents 2). However, since the wind speed of the ascending airflow increases at the sorting nozzle corresponding to the throttle in the pipe line, the discharge of the sorting object is constantly hindered, so it can be said that it is difficult to greatly increase the processing capacity. If the air volume is further increased, the drag and the weight of the object to be sorted are balanced by the sorting nozzle and bridged, which may hinder the entire processing process. Thus, the conventional cylindrical wind power sorter has a trade-off relationship between the sorting accuracy and the processing capability, and it is particularly difficult to ensure the processing capability. Also, depending on the shape and posture of the object to be sorted, for example, if a rod-shaped light object falls vertically, sufficient resistance cannot be obtained, so it will come out to the heavy object side despite being a light object. May end up.

As a method for enhancing the solving effect, a method of adding a protrusion to the input port of the object to be sorted or the inside of the wind power sorting apparatus and causing the object to be sorted to collide with the protrusion has been often tried in the past. However, when a string-shaped object to be sorted or an object to be sorted having an adhesive property is included, there is a case where the object is caught on or attached to the protrusion and is accumulated in the sorting apparatus. If the deposits are enlarged, the behavior of the sorting object will not be as intended, and the sorting accuracy cannot be maintained. For this reason, the above-described method has a disadvantage in that work for removing it (maintenance frequency) increases.
JP 2000-313887 A JP 2002-35699 A JP 2001-187377 A

  As described above, it has been difficult for the conventional wind power sorting apparatus to stably secure high processing capacity while maintaining high sorting accuracy. An object of the present invention is to provide a wind sorting apparatus, a resin recycling method, and a recycled resin, which can ensure a high processing capacity with a simple configuration while sorting out foreign substances or lightweight articles contained in a crushed resin with high accuracy. To provide products.

  In order to achieve the above object, a wind power sorting apparatus according to the present invention comprises a sorting pipe and suction means connected to the sorting pipe to make the inside of the sorting pipe have a negative pressure in order to sort an object to be sorted by wind power. It is a wind power sorter provided with. The sorting pipe is located on one side of the sorting pipe and connected to the suction means, and the collection opening for collecting the light weight of the sorting objects and the weight of the sorting object located on the other side. Located between the discharge opening for discharging the material, the collection opening and the discharge opening, and between the input opening and the discharge opening for inputting the object to be sorted And a stirring opening for stirring the object to be sorted.

  According to the apparatus having the above-described configuration, since the unraveling effect can be obtained at two locations of the discharge opening and the stirring opening, the sorting accuracy is improved as compared with the conventional type in which the stirring opening is not arranged. Furthermore, since it is not necessary to add a protrusion such as a backing plate to the inside of the sorting tube, after the operation, the residue of the sticky material inside the sorting tube is reduced, and the maintainability is excellent. Further, since the airflow from the stirring opening stirs the object to be sorted above the discharge opening (on the opening side), the above-mentioned accumulation (clogging) is avoided and the processing capacity is improved. be able to. The above heavy and lightweight items refer to the results of sorting into a relatively heavy group and a small group as a result of the operation of the wind power sorter, and are affected not only by weight but also by shape, size, etc. Receive. Therefore, it is needless to say that a heavy object and a light object are not distinguished from each other at a certain weight.

  Said stirring opening part can have an air introduction part extended in the radial direction of a sorting tube. With this configuration, air can be introduced along the direction that intersects the axial direction (vertical direction) of the sorting tube, so that it is more effective by impacting the air to the sorting object that falls along the inner wall due to gravity. It can have an effective solution. In particular, since air can be introduced from the outer periphery toward the axis, it is possible to move the object to be sorted while unwinding the air flowing in from the discharge opening located vertically below and rising by the suction means.

  In addition, it is possible to provide a charging pipe for charging the object to be sorted along the tangential direction of the sorting pipe (a direction along the circumference of the substantially cylindrical sorting pipe) in the charging opening. With this configuration, the object to be sorted makes a turning motion along the inner wall surface inside the sorting tube, so that the path from input to collection or discharge can be lengthened. As a result, the time during which the object to be sorted stays in the sorting tube increases, that is, the opportunity for sorting increases, so that the sorting accuracy is improved.

  Further, the sorting tube can have a conical collection side portion whose diameter decreases toward the collection opening. With this configuration, by making the upper part of the sorting tube into a substantially conical shape, the lightweight object is carried along the inner wall surface to the collection opening while making a swiveling motion. Since the upward speed component increases as it approaches, it is possible to reliably collect lightweight objects.

  Furthermore, the sorting tube can have an inverted conical discharge side portion whose diameter decreases towards the discharge opening. With this configuration, by making the lower part of the sorting tube into an inverted conical shape, the heavy object falls to the discharge opening along the inner wall surface while rotating, so the air flow from the stirring opening is substantially the same as the movement direction of the heavy object. The stirring effect is greatly improved by hitting vertically. Furthermore, since the swiveling motion of the object to be sorted after passing through the stirring opening is reduced, the lifting effect of the rising air current at the subsequent discharge opening is improved.

  The stirring opening can be formed by a slit provided around the sorting tube. With this configuration, it becomes possible to apply an air flow from a substantially vertical direction to all objects to be sorted that pass through the stirring opening, and the stirring effect is further improved.

  In addition, a pair of ridges is provided on the outer periphery of the slit with a gap of the slit width, and the two ridges can form an air introduction portion. With this configuration, it is possible to introduce the air for stirring with a more uniform direction through the slit, with the direction being substantially vertical (with a run-up).

  Further, the discharge opening can be constituted by a cylindrical discharge pipe. With this configuration, the direction of movement of the object to be sorted falling in the discharge pipe and the direction of the rising air flow are substantially reversed, so that a better unraveling effect can be obtained, and thereafter the separation is performed at the stirring opening and the discharge pipe. A further improvement in sorting accuracy can be achieved by carrying the light weight on the ascending air current and carrying it to the collection opening.

  Moreover, the adjustment mechanism which adjusts the air volume which passes through the opening part can be provided in at least one opening part among the collection | recovery opening part, the input opening part, the stirring opening part, and the discharge | emission opening part. With this configuration, by adjusting the air volume balance inside the sorting tube, the behavior of the object to be sorted having various properties can be controlled, and the sorting accuracy and processing capability corresponding to this can be arbitrarily set. In addition, it is needless to say that the agitation opening is a slit provided in the sorting tube on the input opening side of the discharge opening, and the discharge opening may be a discharge pipe constituting the discharge opening. .

  Moreover, a dust collector can be adopted as the suction means. With this configuration, not only can the suction be performed from the collection opening with a stable air volume, but also a lightweight object can be collected by the filter inside the dust collector.

  A cyclone separator can be installed in the middle of the path connecting the sorting tube and the suction means. With this configuration, the light weight collected by the present apparatus is separated by the cyclone separator, so that the frequency of filter clogging in the dust collector is greatly reduced. In addition, the reduction in the air volume caused by the filter clogging can be reduced, which contributes to the stabilization of the suction air volume.

  In addition, the resin recycling method according to the present invention includes a step of selecting an object to be sorted as a resin crushed material and sorting the resin crushed material using any one of the above-described wind sorting apparatuses. By this step, high-efficiency wind sorting can be performed while maintaining high sorting accuracy, and the resin recycling process can be made inexpensive.

  In addition, as the object to be sorted, a resin crushed material or a specified item of the Home Appliance Recycling Law can be collected by crushing. In home appliance recycling plants, a large number of home appliances are roughly crushed with a limited number of crushers, so most of the crushed resin discharged from home appliance recycling plants is a mixture of resins of various materials. Resin. In this, many resin which has a foaming material single-piece | unit, a deposit | attachment, or a sticking thing is also contained. When this mixed resin is crushed, the film material or foamed material or powder adhered or adhered to the resin surface is separated from the resin and mixed in a large amount in the crushed material as a lightweight material together with burrs and the like. In addition, because the mixed resin also contains adhesives such as butyl rubber, this device, which has no protrusions on the inner wall surface of the sorting tube and can sort lightweight materials with high precision, was collected by crushing designated items for home appliance recycling. It is effective against things.

  At this time, the suction air speed at the inlet opening is 15 to 25 m / s, the suction air speed at the stirring opening is 10 to 20 m / s, and the suction air speed at the discharge opening is 3 to 6 m / s. Accurate sorting accuracy. Needless to say, the agitation opening is a slit provided in the sorting tube on the input opening side of the discharge opening, and the discharge opening may be a discharge pipe constituting the discharge opening.

  Further, as the suction means, a dust collector having a blower motor and a blower motor with a rated output of 3.7 kw or less can be used. Thereby, size reduction and cost reduction of an apparatus can be achieved.

  In addition, the recycled resin product according to the present invention uses a resin crushed product collected by crushing a resin crushed product or a specified item of the Home Appliance Recycling Law as the material to be sorted, and the resin collected by the above apparatus. Including products. With this configuration, it is possible to obtain a resin crushed material from which light-weight materials such as film-like, foam-like or powdery foreign matters, burrs, etc. have been removed. A resin can be obtained. Furthermore, a high-quality resin product using this can be molded. The recycled resin product includes both a resin product as a raw material and a resin product processed and molded using the resin product. Further, the resin may not be all regenerated by the above-described method, and may be included only in a part of the product.

  As is clear from the above, according to the wind power sorting apparatus of the present invention, a film-like, foamed or powdery foreign matter mixed in the resin crushed material, or a lightweight object such as a burr inevitably generated by resin crushing, Recycled resin products with stable physical properties can be provided because they can be accurately selected and removed from crushed resin.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a sorting apparatus in the present embodiment. This device is a lightweight material such as film-like, foam-like, or powder-like foreign matter, burrs, etc., among resin crushed materials (bulk specific gravity of about 0.4) in which resin parts used in home appliances are crushed to 13 mm or less. Is a device that defines various conditions for sorting out and removing materials.

  The crushed resin is sucked from the charging tube 2 connected to the charging opening of the charging unit 1 and enters the sorting tube 3 to be sorted into light and heavy items. The lightweight material is sucked from the collection unit 4, and the heavy material is positioned at the end of the agitation unit 5, and is discharged to the heavy material hopper 7 from the discharge pipe 6 constituting the discharge opening. The lightweight material sucked into the collection unit 4 enters the cyclone separator 8, is separated from air containing fine dust having a particle size of several μm to several tens of μm or less, and is collected by the lightweight material hopper 9. The heavy object is conveyed from the heavy object hopper 7 to the next process.

  The sorting tube 3 has a cylindrical charging portion 1 having an inner diameter of 300 mm × length of 180 mm in the center and a conical collection portion 4 having a recovery opening having an inner diameter of φ100 mm above, that is, a diameter toward the recovery opening. Has a conical-shaped collection side portion that becomes smaller. Further, an inverted conical stirring unit 5 provided with a cylindrical discharge pipe 6 having an inner diameter φ80 mm × length 100 mm constituting a discharge opening below, that is, an inverted conical discharge whose diameter decreases toward the discharge opening. It has a side part. Since the input tube 1 is formed with an inner diameter of φ65 mm along the substantially horizontal tangential direction, the object to be sorted is sucked from here and then swung along the inner wall of the selection tube 3. In the present embodiment, the input pipe 2 (the direction in which the sorting object is input) is disposed along a substantially horizontal tangential direction. However, the present invention is not limited to this, and the object to be sorted may be thrown in an obliquely upward direction according to the property of the object to be sorted. Further, since the input direction affects the behavior in the sorting tube 3, the input direction may be adjustable in the same manner as the air volume balance described later.

  A slit 10 having a width of 4 mm is formed at the upper end of the discharge pipe 6 or the lower end of the stirring unit 5 so as to form a stirring opening, and the slit width 11 is formed as shown in FIG. It can set arbitrarily in the range of 0-10 mm. Specifically, the slit width 11 can be adjusted to an arbitrary width by vertically adjusting the welding nut 13 welded to the slit flange 12 through the adjusting bolt 14. The space between the two flanges of the two slit flanges 12 that form a pair forms an air introduction portion, and the air can be introduced into the lower end of the agitation portion of the sorting tube with the inflow direction being substantially horizontal. On the other hand, the upper and lower sides of the divided slit 10 can be fixed by holding the slit flange 12 from the outside with the fixing bolt 15 and the fixing nut 16. Thereby, since the stirring level according to the property of the to-be-sorted object can be set, sorting accuracy improves. In the present embodiment, the slit 10 over the entire circumference is adopted. However, the present invention is not limited to this, and an effect close to that of the slit 10 can be obtained by providing a plurality of holes.

  A recovery opening having an inner diameter φ of 100 mm at the upper end of the recovery part 4 is connected to a cyclone separator 8 via a duct 17. A lightweight rotary valve 18 is provided at the lower part of the cyclone separator 8 and discharges the collected lightweight article while maintaining a negative pressure. Air containing fine dust having a particle size of several μm to several tens of μm or less passes through the cyclone separator 8 and is sucked through a duct 17 into a dust collector 20 having a bag filter 19. By providing the cyclone separator 8 in front of the dust collector 20, the frequency with which the dust collector 20 sucks a large amount of lightweight objects and clogs the filter can be greatly reduced, and the suction air volume is stabilized accordingly. be able to. In the present embodiment, a small dust collector 20 (filter blower rated output 3.7 kW) having a filter cleaning function is employed, and the air volume can be adjusted by an inverter. The lower end portion of the sorting pipe 3 is blocked from outside air by the heavy hopper 7, and the amount of air flowing into the discharge pipe 6 can be adjusted by opening and closing a valve 21 added to the heavy hopper 7. In addition, the heavy goods rotary valve 22 is installed in the lower part of the heavy goods hopper 7, It is a structure which supplies the stored heavy goods to the following process quantitatively, maintaining the inside of the heavy goods hopper 7 at a negative pressure.

  Next, the details and mechanism of the device selection operation will be described. In the present apparatus adopting the above configuration, the outside air is sucked from the input pipe 2, the slit 10 and the discharge pipe 6 by generating a negative pressure in the dust collector 20. The inflow airflow from the input pipe 2 is used for the swiveling motion of the object to be sorted, the inflow airflow from the slit 10 is used for sorting and collecting the light objects in the slit 10, and the inflow airflow from the discharge pipe 6 is used for the light objects in the discharge pipe 6. Each has a major impact on sorting and collection. The air volume balance of these inflow airflows governs the behavior of the object to be sorted inside the sorting tube 3, and determines the sorting accuracy and processing capacity of this apparatus.

In the present embodiment, as described above, the suction air volume can be adjusted by the inverter of the dust collector 20, and the inflow air volume from the slit 10 and the discharge pipe 6 can be adjusted by the valve 21 provided in the slit width 11 and the heavy load hopper 7. The optimum conditions can be set according to the properties of the objects to be sorted by these adjustable factors. Specifically, by adjusting the suction air speed in the input pipe 2 to 15 to 25 m / s, the suction air speed in the slit 10 to 10 to 20 m / s, and the suction air speed in the discharge pipe 6 to 3 to 6 m / s, Sorting accuracy was achieved. At this time, the air volume can be balanced by sucking about 15 to 18 m ³ / h with a dust collector. As in the present embodiment, with this amount of suction air volume, only one small dust collector may be used as the wind force generating means, and the size and price can be reduced.

  Further, in this embodiment, from the viewpoint of preventing clogging in the pipe, an inflow air volume adjusting mechanism is not added to the input pipe 2, but the pressure loss in the pipe can be increased or decreased by adjusting the length of the input pipe 2. The inflow air volume adjustment accompanying this may be performed.

  Since the air flowing in from the input pipe 2 is in a substantially horizontal tangential direction of the sorting pipe 3, a swirling flow is generated here. As can be seen from FIG. Further, since all the air flowing in from the slit 10 and the discharge pipe 6 is sucked into the recovery unit 4, a swirl rising airflow toward the recovery unit 4 is formed accurately. That is, it can be seen that an updraft is formed below the input pipe 2 and a swirling updraft is formed above.

  Immediately after the object to be sorted is sucked together with air having a wind speed of about 15 to 25 m / s from the input pipe 2, the object to be sorted performs a turning motion along the inner wall surface of the sorting pipe 3. Here, as described above, since there is a swirling upward airflow above the charging pipe 2, the object to be sorted tends to swivel upward from the charging section 1 toward the collecting section 4. The lightweight object rides on the swirling updraft and moves toward the collection unit 4 while contacting the inner wall surface of the sorting tube 3 by centrifugal force. In the collection unit 4, the rising speed increases as it moves upward, so that a lightweight object can be reliably and smoothly collected. The objects to be sorted that have been separated at this point still contain light weights, which are called primary weights.

  The primary heavy object has its own weight over the upward drag received from the rising component of the swirling updraft, and switches to the swiveling and falling motion. The primary weight is slid down to the position where the slit 10 is formed while being in contact with the inner wall of the stirring tube 5 due to the fact that the stirring portion 5 has an inverted conical shape and the centrifugal force of the turning motion. At this time, the ascending airflow flowing in from the slit 10 and the discharge pipe 6 has little influence on the vicinity of the wall of the stirring pipe 5, and since the drag is weak while sliding down along the inner wall surface, it quickly turns down. The primary heavy object is subjected to an airflow of about 3 to 6 m / s in wind speed flowing from the slit 10 into the sorting tube 3 and is separated by stirring.

  As shown in FIG. 4, most primary heavy objects pass through the slit while being in contact with the inner wall surface due to the influence of centrifugal force, so that an air flow with a wind speed of 10 to 20 m / s reached the slit 10 like an air knife. Even if the primary heavy load 23 collides at a substantially right angle and the falling speed of the primary heavy load is high, a very high unraveling effect can be provided. In addition, since the slit 10 extends over the entire circumference, the primary weight can be stirred regardless of the route. That is, an improvement in discharge speed (processing capacity) is achieved while maintaining high sorting accuracy. In the experiment by the inventor, when the slit 10 is not formed, the maximum processing capacity at which clogging does not occur is about 80 kg / h. However, by providing a slit according to the specification of the apparatus, the capacity is greatly improved to about 250 kg / h. I was able to. Note that the separated lightweight object is sucked from the collecting unit 4 on the rising airflow flowing from the slit 10 and the discharge pipe 6. The object to be sorted that has passed through the slit 10 still contains a small amount of light weight, which is called a secondary weight.

  The secondary heavy object reaches the discharge pipe 6 after the swirling and falling motion is attenuated by the stirring effect when passing through the slit 10. The discharge pipe 6 (i) separates a very small number of lightweight objects that have failed to be separated by the slit 10, and (ii) places the lightweight objects separated by the slit 10 and the discharge pipe 6 on the rising airflow flowing from the slit 10. In order to satisfy this, it has been proved by experiments that a weak updraft with a wind speed of about 3 to 6 m / s is sufficient. For the purpose of (i) above, since the discharge pipe 6 is made cylindrical, it is possible to apply an air flow almost opposite to the falling direction of the secondary heavy object, so that the unraveling effect is good and the sorting accuracy is high. It is obvious. In addition, although this apparatus employs the discharge pipe 6 having an inner diameter of 80 mm and a length of 100 mm, the pipe diameter and the pipe length have a great influence on the sorting accuracy and processing capacity as in the air volume balance described above. It is better to set the length according to. After the above selection, the heavy weight shown in FIG. 1 is used for the recycled resin product.

  As described above, the wind power sorting apparatus according to the present invention has a simple structure that does not require a special stirring device, and generates an air flow by only one inexpensive small dust collector. (S1) Immediately after being charged (S2) By sorting at three locations, when passing through the opening (slit) and at the time of discharging (S3), the high processing accuracy that is the advantage of the conventional cylindrical wind power sorter is not impaired, and the processing capacity that was a disadvantage is insufficient. It can be improved dramatically.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is an outline explanatory view of a wind power sorter in an embodiment of the invention. It is a figure explaining the width adjustment mechanism of the slit which comprises the stirring opening part in FIG. It is a figure explaining the air flow inside the wind power sorter of FIG. It is a figure explaining the condition where the inflow airflow in a slit collides with a to-be-sorted object.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Input part, 2 input pipe, 3 sorter | pipe, 4 collection | recovery part, 5 stirring part, 6 discharge | emission pipe, 7 heavy load hopper, 8 cyclone separator, 9 lightweight load hopper, 10 slit (stirring opening part), 11 slit width, 12 slit flange, 13 welding nut, 14 adjusting bolt, 15 fixing bolt, 16 fixing nut, 17 duct, 18 light weight rotary valve, 19 bag filter, 20 dust collector, 21 valve, 22 heavy load rotary valve, 23 Primary weight.

Claims (16)

A wind power sorting apparatus including a sorting pipe and suction means connected to the sorting pipe to create a negative pressure inside the sorting pipe in order to sort the object to be sorted by wind power,
The sorting tube is located on one side of the sorting pipe and connected to the suction means, and is disposed on the other side of the collection opening for collecting the light weight of the sorting objects, A discharge opening for discharging the heavy object, a charging opening positioned between the collection opening and the discharge opening, and the charging opening, and the discharge opening. And an agitation opening for agitating the object to be sorted, which is located between the parts.   The wind power sorting device according to claim 1, wherein the stirring opening portion has an air introduction portion extending in a radial direction of the sorting pipe.   The wind power sorter according to claim 1 or 2, further comprising an input pipe that inputs the object to be sorted into the input opening along a tangential direction of the selection pipe.   The wind sorting apparatus according to any one of claims 1 to 3, wherein the sorting pipe has a conical collection side portion whose diameter decreases toward the collection opening.   The wind sorting apparatus according to any one of claims 1 to 4, wherein the sorting pipe has an inverted conical discharge side portion whose diameter decreases toward the discharge opening.   6. The wind power sorting apparatus according to claim 1, wherein the stirring opening is formed by a slit provided around the sorting pipe.   The wind power sorter according to any one of claims 2 to 6, wherein a pair of scissors is provided on the outer periphery of the slit with a pair of slit widths, and the two scissors form the air introduction part.   The wind power sorting apparatus according to any one of claims 1 to 7, wherein the discharge opening is formed by a cylindrical discharge pipe.   The adjustment mechanism which adjusts the air volume which passes through the opening to at least one opening among the collection opening, the input opening, the stirring opening, and the discharge opening. The wind power sorting apparatus according to any one of the above.   The wind power sorting apparatus according to any one of claims 1 to 9, wherein a dust collector is employed as the suction means.   The wind power sorter according to any one of claims 1 to 10, wherein a cyclone separator is installed in the middle of a path connecting the sorting pipe and the suction means.   The resin recycling method including the process of classifying the crushed resin as the crushed resin using the wind power sorting apparatus according to any one of claims 1 to 11.   The resin recycling method according to claim 12, wherein the crushed resin is obtained by crushing a specified item of the Home Appliance Recycling Law.   The suction wind speed at the inlet opening is 15 to 25 m / s, the suction wind speed at the stirring opening is 10 to 20 m / s, and the suction wind speed at the discharge opening is 3 to 6 m / s. Or the resin recycling method of 13.   The resin recycling method according to any one of claims 12 to 14, wherein a dust collector having a blower motor is used as the suction means, and a rated output of the blower motor is 3.7 kw or less.   A recycled resin product comprising a resin recycled by the resin recycling method according to claim 12.

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