Classification system, classification method, and control program

Abstract

To provide a classification system, a classification method, and a control program capable of improving the classification accuracy of crushed articles generated by crushing a vehicle.SOLUTION: This classification system is for classifying crushed articles generated by crushing a vehicle, and comprises: a sieve installed on the upper side of a conveyance path of the crushed articles; a first suction device that sucks the crushed articles from the upper side of the sieve and recovers a crushed article passed through the sieve as a first crush residual; a blower that blows air to a crushed article not recovered by the first suction device; and a second suction device that sucks the crushed article blown up by the air from the blower and recovers it as a second crush residual.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a sorting system, a sorting method, and a control program for sorting crushed material generated by crushing a vehicle. [Background technology]

[0002] In recent years, the recycling of ASR has been promoted, and therefore there is a demand for accurate separation of the crushed material generated by crushing vehicles into useful metals and ASR, which contains organic components such as hardened plastics, for recovery.

[0003] For example, Patent Document 1 discloses a method for treating a mixture of fragmented materials, which is generated by shredding durable consumer goods at the end of their useful life and which consists of small amounts of used polymeric materials that can be recycled in the field of plastics technology, and pollutants. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2013-535359 Summary of the Invention [Problem to be solved by the invention]

[0005] There continues to be a need to accurately separate and recover the crushed material generated from shredding vehicles into useful metals and ASR, which contains organic components such as hardened plastics.

[0006] The present disclosure has been made in consideration of the above background, and aims to provide a sorting system, a sorting method, and a control program capable of accurately sorting and collecting crushed materials generated by crushing vehicles. [Means for solving the problem]

[0007] The sorting system according to the present disclosure is a sorting system for sorting crushed materials generated by crushing a vehicle, and includes a sieve installed above a transport path for the crushed materials, a first suction device for sucking the crushed materials from above the sieve and collecting the crushed materials that have passed through the sieve as a first crushed residue, a blower for blowing wind against the crushed materials that have not been collected by the first suction device, and a second suction device for sucking the crushed materials blown up by the wind of the blower from above the transport path and collecting them as a second crushed residue. This sorting system can improve the recovery rate of organic components contained in ASR by further recovering organic components such as hardened plastics that could not be recovered by the first suction device alone using the blower and the second suction device. In other words, this sorting system can accurately separate and collect the crushed materials generated by crushing a vehicle.

[0008] The blower may be installed so as to be able to blow air from the bottom of a cylindrical transport path that transports the crushed material not collected by the first suction device from the top to the bottom, and the second suction device may be installed so as to be able to suck in air from the top of the cylindrical transport path.

[0009] The air conditioner may further include a control device that controls the suction force of the first suction device, the suction force of the second suction device, and the wind force of the blower.

[0010] The control device may be configured to control the suction force of the first suction device, the suction force of the second suction device, and the wind force of the blower depending on the components contained in the first crushed residue and the second crushed residue, respectively.

[0011] The control device may weaken at least one of the suction force of the first suction device, the suction force of the second suction device, and the wind force of the blower when the content of a predetermined metal in the first crushed residue and the second crushed residue is equal to or greater than a predetermined rate.

[0012] The control device may increase at least one of the suction force of the first suction device, the suction force of the second suction device, and the wind force of the blower when the content of a predetermined organic component in the crushed material that is not recovered as the first crushing residue and the second crushing residue is equal to or greater than a predetermined rate.

[0013] The separation method according to the present disclosure is a separation method using a separation system that separates crushed materials generated by crushing vehicles, in which the crushed materials are sucked from the upper side of a sieve installed on the upper side of a conveying path for the crushed materials, and the crushed materials that have passed through the sieve are collected as a first crushed residue, and wind is blown onto the crushed materials that have not been collected as the first crushed residue, and the crushed materials blown up by the wind are sucked from the upper side of the conveying path and collected as a second crushed residue. This separation method can improve the recovery rate of organic components contained in ASR by further recovering organic components such as hardened plastics that could not be recovered by the first suction device alone using a blower and a second suction device. In other words, this separation method can accurately separate and recover the crushed materials generated by crushing vehicles.

[0014] The control program according to the present disclosure is a control program for making a computer execute a sorting process in a sorting system for sorting crushed materials generated by crushing a vehicle, and causes the computer to execute a process of sucking the crushed materials from above a sieve installed above the transport path of the crushed materials, and recovering the crushed materials that have passed through the sieve as a first crushed residue, a process of blowing wind against the crushed materials that have not been recovered as the first crushed residue, and a process of sucking the crushed materials blown up by the wind from above the transport path and recovering them as a second crushed residue. This control program can improve the recovery rate of organic components contained in ASR by further recovering organic components such as hardened plastics that could not be recovered by the first suction device alone using a blower and a second suction device. In other words, this control program can accurately separate and recover the crushed materials generated by crushing a vehicle. Effect of the Invention

[0015] The present disclosure makes it possible to provide a sorting system, a sorting method, and a control program capable of accurately sorting and recovering crushed materials generated by crushing a vehicle. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram showing an example of an ASR recovery system among the separation systems according to the present disclosure. [Diagram 2] 1 is a block diagram showing an example configuration of a control device provided in an ASR collection system according to the present disclosure. FIG. [Diagram 3] FIG. 2 is a block diagram showing an example of the configuration of an early stage process of an ASR sorting system in the sorting system according to the present disclosure. [Figure 4] FIG. 2 is a schematic perspective view showing an example of a sieve provided in the ASR separation system according to the present disclosure. [Diagram 5] FIG. 5 is a schematic top view of the sieve shown in FIG. 4. [Figure 6] FIG. 2 is a schematic diagram showing another example of a sieve provided in the ASR separation system according to the present disclosure. [Figure 7] FIG. 2 is a block diagram showing an example of the configuration of a mid-term process of an ASR sorting system according to the present disclosure. [Figure 8] FIG. 2 is a schematic diagram showing an example of a sorting machine using a sieve provided in the ASR sorting system according to the present disclosure. [Figure 9] FIG. 2 is a schematic diagram showing an example of a sieve provided in the ASR separation system according to the present disclosure. [Figure 10] FIG. 2 is a block diagram showing an example of the configuration of a later process of the ASR sorting system according to the present disclosure. [Figure 11] FIG. 2 is a schematic diagram illustrating an example of an optical sorter provided in the ASR sorting system according to the present disclosure. [Figure 12] FIG. 2 is a schematic diagram illustrating an example of an optical sorter provided in the ASR sorting system according to the present disclosure. [Figure 13]It is a schematic cross-sectional view showing an example of a wet sedimentation separator provided in the ASR separation system according to the present disclosure. [Figure 14] It is a schematic perspective view showing the appearance of the wet sedimentation separator shown in FIG. 13. [Figure 15] It is a schematic cross-sectional view showing a first modification of the wet sedimentation separator provided in the ASR separation system according to the present disclosure. [Figure 16] It is a schematic cross-sectional view showing a second modification of the wet sedimentation separator provided in the ASR separation system according to the present disclosure.

Embodiments for Carrying Out the Invention

[0017] Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. Also, for clarity of explanation, the following description and drawings are simplified as appropriate.

[0018] <Separation System According to the Present Disclosure> So far, since ASR has mainly been used for cement formation, fine separation of ASR has not been performed. However, in recent years, due to the increasing demand for reuse of ASR in various fields, accordingly, the need for efficient recovery of ASR and high-precision separation of ASR has been increasing. Therefore, the separation system according to the present disclosure efficiently recovers ASR using the ASR recovery system 10 and performs high-precision separation of ASR using the ASR separation system 20.

[0019] <Explanation of ASR Recovery System 10> FIG. 1 is a schematic diagram showing an example of an ASR recovery system 10 among the separation systems according to the present disclosure. The ASR recovery system 10 is a system that separates and recovers crushed material generated by crushing scrapped vehicles into useful metals and ASR containing organic components such as hardened plastics. Here, the ASR recovery system 10 can increase the content of organic components in the ASR (for example, to 70% or more) by adjusting the suction force of the suction device that sucks in the crushed material and the wind force of the blower that blows up the crushed material. In other words, the ASR recovery system 10 can accurately separate and recover the crushed material generated by crushing vehicles. A specific description will be given below.

[0020] In the sorting system according to the present disclosure, first, major parts such as the engine, transmission, catalyst, tires, battery, oil, fuel, fluorocarbon gas, and airbags are removed from a vehicle to be scrapped. The vehicle from which the major parts have been removed is pressed and then crushed to a predetermined size S1 or less by a pre-shredder (not shown). Crushed material 50 of the predetermined size S1 or less is transported by a belt conveyor 101 and fed into an inlet 102 of the ASR recovery system 10. The crushed material 50 fed into the inlet 102 is fed into a crushing chamber 105 via an upper feed roller 103 and a lower feed roller 104. In the crushing chamber 105, the crushed material 50 is further crushed into smaller pieces by a hammer 106 attached to the outer periphery of a rotating rotor.

[0021] A sieve 108 that allows crushed objects of a predetermined size S2 or less, which is smaller than the predetermined size S1, to pass through is attached to the upper part of the crushing chamber 105. A sieve 107 that allows crushed objects of a predetermined size S3 or less, which is smaller than the predetermined size S1, to pass through is attached to the lower part of the crushing chamber 105. The predetermined sizes S2 and S3 are determined according to the specifications and may be the same or different.

[0022] Of the sieves 107 and 108, only the sieve 108 may be provided, and the sieve 107 may not be provided. In other words, the discharge path of the crushed material from the crushing chamber 105 may be only the path via the sieve 108. However, by providing the sieve 107, the number of discharge paths of the crushed material from the crushing chamber 105 is increased and the discharge efficiency is increased, so that the crushing processing capacity of the crushed material 50 in the crushing chamber 105 is increased.

[0023] The first suction device 109 sucks the crushed material 50, which has been finely crushed by the hammers 106 in the crushing chamber 105, through the sieve 108 from a suction port 110 provided on the upper side of the sieve 108. Then, the first suction device 109 collects the crushed material 50 in the crushing chamber 105 that has passed through the sieve 108 as crushed residue (first crushed residue) 50a.

[0024] The tray 111 is installed below the sieve 107. The tray 111 receives, as crushed material 50b, crushed material 50 in the crushing chamber 105 that has not been collected by the first suction device 109 and that has passed through the sieve 107. The tray 111 also receives, as crushed material 50b, crushed material that has been sucked by the first suction device 109 and passed through the sieve 108 but is too heavy and falls before reaching the suction port 110. The crushed material 50b received by the tray 111 is transported by the belt conveyor 112 and fed into an inlet 114 provided on the upper side of the sorting chamber 113.

[0025] The sorting chamber 113 is a cylindrical transport path that transports the crushed material 50b from an inlet 114 provided at the top to a discharge outlet 115 provided at the bottom. Here, a discharge outlet 116 is provided at the top of the sorting chamber 113 in addition to the discharge outlet 115 provided at the bottom of the sorting chamber 113. The discharge outlet 116 also serves as a suction port for a second suction device 118. Therefore, hereinafter, the discharge outlet 116 will also be referred to as a suction port 116.

[0026] A blower 117 is installed below and outside the sorting chamber 113. The blower 117 blows air from outside the sorting chamber 113 to the crushed objects 50b in the sorting chamber 113 through the exhaust port 115. A separate vent for passing the air from the blower 117 may be provided at the bottom of the sorting chamber 113. In this case, the blower 117 blows air from outside the sorting chamber 113 to the crushed objects 50b in the sorting chamber 113 through the vent.

[0027] The second suction device 118 sucks in the crushed materials 50b in the sorting chamber 113 that have been blown up by the wind from the blower 117 through the suction port 116, and collects them as crushed residue (second crushed residue) 50c. Crushed materials 50b in the sorting chamber 113 that have not been collected by the second suction device 118 are discharged from the discharge port 115 as collected material 80. The collected material 80 is mainly composed of metals (useful metals) and ceramic materials. The collected material 80 may be further separated into smaller pieces in a process not shown.

[0028] The crushed residue 50a collected by the first suction device 109 and the crushed residue 50c collected by the second suction device 118 are collectively discharged as ASR 60. The ASR 60 is composed of organic components, non-ferrous metals, harnesses, glass, iron, paper, wood, etc. The organic components are hardened plastics (resins), urethane foam, fibers, rubber, etc. The higher the organic component content in the ASR 60 (i.e., the higher the recovery rate of the organic components from the crushed material 50), the higher the efficiency of recycling the ASR.

[0029] The ASR recovery system 10 is provided with a control device 15. The control device 15 drives the ASR recovery system 10, and controls the suction force of the first suction device 109, the suction force of the second suction device 118, and the wind force of the blower 117 based on the respective components of the ASR 60 and the recovered material 80. In this way, the control device 15 can increase the content of organic components in the ASR 60.

[0030] Fig. 2 is a block diagram showing an example of the configuration of the control device 15. As shown in Fig. 2, the control device 15 includes a drive unit 151, an analysis unit 152, a suction force adjustment unit 153, and an air force adjustment unit 154.

[0031] The drive unit 151 drives the ASR recovery system 10. As a result, the ASR recovery system 10 performs an operation of separating the crushed material 50 into ASR 60 containing organic components such as hardened plastics, and recovered material 80 composed of metals and ceramics.

[0032] The analysis unit 152 analyzes the components of the ASR 60 recovered by the ASR recovery system 10 and the recovered materials 80 other than the ASR 60 recovered by the ASR recovery system 10.

[0033] The suction force adjustment unit 153 adjusts the suction forces of the first suction device 109 and the second suction device 118 based on the analysis result by the analysis unit 152. The wind force adjustment unit 154 adjusts the wind force of the blower 117 based on the analysis result by the analysis unit 152.

[0034] For example, when the content of a predetermined metal (metal to be contained in the recovered material 80) in the ASR 60 is equal to or higher than a predetermined percentage, the suction power adjustment unit 153 weakens at least one of the first suction device 109 and the second suction device 118. Alternatively, the wind power adjustment unit 154 weakens the wind power of the blower 117. This suppresses the recovery of the predetermined metal by the first suction device 109 and the second suction device 118.

[0035] Furthermore, for example, when the content of a predetermined organic component (a component that should be contained in ASR 60) in the recovered material 80 is equal to or higher than a predetermined rate, the suction power adjustment unit 153 strengthens at least one of the first suction device 109 and the second suction device 118. Alternatively, the wind power adjustment unit 154 strengthens the wind power of the blower 117. This promotes the recovery of the predetermined organic component by the first suction device 109 and the second suction device 118.

[0036] Note that the methods for adjusting the suction force of each of the first suction device 109 and the second suction device 118 by the suction force adjustment unit 153 and the method for adjusting the wind force of the blower 117 by the wind force adjustment unit 154 are various. The control device 15 can improve the content rate of the organic component in the ASR60 by finely adjusting the suction force of each of the first suction device 109 and the second suction device 118 and the wind force of the blower 117.

[0037] In this way, the ASR recovery system according to the present disclosure can improve the content rate of the organic component in the recovered ASR (for example, 70% or more) by adjusting the suction force of the suction device that sucks the crushed material and the wind force of the blower that blows up the crushed material. In other words, the ASR recovery system according to the present disclosure can accurately separate and recover the crushed material generated by crushing the vehicle.

[0038] <Description of the ASR separation system 20> FIG. 3 is a block diagram showing a configuration example of the preliminary process of the ASR separation system 20 among the separation systems according to the present disclosure. The ASR separation system 20 is a system that finely separates the ASR60 recovered from the crushed material 50 by the ASR recovery system 10.

[0039] As shown in FIG. 3, the ASR separation system 20 includes a sieve 201, an air classifier 202, a crusher 203, and an air classifier 204 for the preliminary process.

[0040] The sieve 201 separates the ASR60 recovered from the crushed material 50 in the ASR recovery system 10 into ASR (first ASR) 60a having a particle size less than the first particle size and ASR (second ASR) 60b having a particle size greater than or equal to the first particle size.

[0041] FIG. 4 is a schematic perspective view showing an example of the sieve 201. FIG. 5 is a schematic top view of the sieve 201. As shown in FIGS. 4 and 5, the sieve 201 is configured by arranging a plurality of comb-tooth-shaped members 2011 having a plurality of slits 2011a in a stepped manner. The sieve 201 separates the ASR 60 into ASR 60a that has passed through the slits and ASR 60b that has not passed through the slits by vibrating. As an example, the width of the slits is 10 mm, and the length of the slits is 40 mm. Since the length of each slit is as long as 40 mm, linear objects such as wire harnesses and copper wires are less likely to clog the sieve 201.

[0042] Here, glass is generally easily broken into small pieces by crushing. The slits of the sieve 201 are adjusted to a small width (size) that allows glass to pass through. Therefore, it can be said that the sieve 201 separates the ASR 60a having a high glass content from the other ASR 60b. Note that the slit width of the sieve 201 is described as 10 mm, but is not limited thereto. The slit width of the sieve 201 may be any size such that the glass content of the ASR 60a is high and the glass content of the ASR 60b is low. Specifically, the slit width of the sieve 201 may be larger than 10 mm so that the glass content of the ASR 60b is substantially zero. In this case, more detailed separation is performed by the sieve 205 in the subsequent process.

[0043] Alternatively, sieve 201 may be configured to be able to change the width of the slits. In this case, for example, a control device (not shown) may analyze the glass content in ASR 60a and the glass content in ASR 60b, and adjust the width of the slits of sieve 201 based on the analysis results.

[0044] The structure of the sieve 201 is not limited to the structure shown in FIG. 4, and can be appropriately changed to another structure capable of separating the ASR 60 into ASR 60a having a particle size less than the first particle size and ASR 60b having a particle size equal to or greater than the first particle size. For example, the structure of the sieve 201 may be a structure as shown in FIG. 6. FIG. 6 is a schematic diagram showing another example of the sieve 201 as a sieve 201a. As shown in FIG. 6, the sieve 201a has a plurality of mesh-like holes formed therein and is formed in a cylindrical shape. The cylindrical sieve 201a rotates to separate the ASR 60 introduced into an upper inlet 2012 into ASR 60a that has passed through the slits and ASR 60b that has not passed through the slits and has been discharged from a lower outlet 2013.

[0045] The wind separator 202 blows wind against the ASR 60a having a particle size smaller than the first particle size, and separates the ASR 60a into ASR 60c, which is a light material blown up by the wind, and the remaining ASR 60d. The light ASR 60c blown up by the wind is, for example, fiber dust. The fiber dust is solidified and used as fuel for electric furnaces or as a reducing agent for blast furnaces.

[0046] The crusher 203 crushes the ASR 60b having a particle size equal to or larger than the first particle size, for example, to a particle size smaller than the first particle size, using a hammer or the like attached to the outer periphery of a rotating rotor. Note that in addition to crushing, magnetic separation (separation by magnetic force), aluminum separation, and the like may also be performed here.

[0047] The wind sorter 204 blows wind against the ASR 60b crushed by the crusher 203, and separates the ASR 60b into ASR 60e, which is a light material blown up by the wind, and ASR 60f, which is not ASR 60b. The light material ASR 60e blown up by the wind is, for example, urethane or fiber dust. The urethane or fiber dust is solidified and used as fuel for an electric furnace or as a reducing agent for a blast furnace. After the crushing by the crusher 203 and the separation of the crushed material by the wind sorter 204, crushing by a crusher (not shown) and separation of the crushed material by a sorter (not shown) may be further performed. That is, crushing and separation of the ASR 60b may be performed in two stages. This reduces the burden on the crusher 203.

[0048] ASR 60d and ASR 60f are further separated in the next step in the ASR separation system 20.

[0049] Fig. 7 is a block diagram showing an example of the configuration of the mid-term process of the ASR separation system 20. As shown in Fig. 7, the ASR separation system 20 includes a sieve 205, a dry specific gravity separator 206, a magnetic separator 207, an aluminum separator 208, a sieve 209, and a dry specific gravity separator 210 for the mid-term process.

[0050] The sieve 205 separates ASR60a, which has a particle size less than the first particle size and has a high glass content, into ASR60g, which has a particle size less than the second particle size, and ASR60h, which has a particle size equal to or larger than the second particle size. Note that the second particle size and the first particle size are approximately equal, but are not limited thereto, and the second particle size and the first particle size may be different to the extent that the second particle size is not too large to cause clogging of the crushed material in a subsequent process or to make the separation by the sieve 205 meaningless.

[0051] FIG. 8 is a schematic diagram showing an example of the sieve 205. As shown in FIG. 8, the sieve 205 has a plurality of slits and is formed in a plate shape. FIG. 9 is a schematic diagram showing a sorting machine 25 equipped with the sieve 205. The sorting machine 25 separates the ASR 60d introduced into the inlet 252 into ASR 60g that has passed through the slits and ASR 60h that has not passed through the slits by vibrating the plate-shaped sieve 205, and discharges them from the outlets 253 and 254, respectively. The slits of the sieve 205 may be adjusted to a width that allows glass to pass easily and prevents components other than glass from passing easily.

[0052] Alternatively, sieve 205 may be configured to be able to change the width of the slits. In this case, for example, a control device (not shown) may analyze the glass content in ASR60g and the glass content in ASR60h, and adjust the width of the slits of sieve 205 based on the analysis results.

[0053] By the separation process using sieves 201 and 205, most of the glass contained in ASR 60 collected in ASR recovery system 10 (ideally all of the glass contained in ASR 60) is separated as ASR 60g. This makes it possible to prevent the separation equipment in the downstream process from being damaged or broken down by the glass.

[0054] The dry specific gravity separator 206 separates the ASR60g having a particle size less than the second particle size fed into the tray into ASR60i having a light specific gravity and ASR60j having a heavy specific gravity, for example by vibrating the tray. The ASR60i having a light specific gravity is glass scrap. The glass scrap is used, for example, as a raw material for cement or as fuel for cement production. The ASR60j having a heavy specific gravity is, for example, gold and silver slag.

[0055] The magnetic separator 207 removes metals such as iron that are attracted to a magnet from the ASR60h having a particle size equal to or larger than the second particle size and smaller than the first particle size. The aluminum separator 208 uses an AC magnetic field generated by rotating a permanent magnet at high speed to separate the ASR60h after magnetic separation into aluminum 60k and the rest of the ASR60m.

[0056] Sieve 209 separates ASR60f, which has a particle size less than the first particle size and has a low glass content, into ASR60n, which has a particle size less than the third particle size, and ASR60p, which has a particle size equal to or greater than the third particle size. Note that the third particle size is smaller than the first particle size, but is not limited thereto, and may be the same as or larger than the first particle size, as long as the third particle size is not so large that it clogs the crushed material in a subsequent process or makes the separation by sieve 209 meaningless. The structure of sieve 209 is the same as that of sieve 205, except that the width of the slits is different.

[0057] The dry specific gravity separator 210 separates the ASR60n, which has a particle size less than the third particle size and is placed on the tray, into ASR60q, which has a light specific gravity, and ASR60r, which has a heavy specific gravity, for example by vibrating the tray. The ASR60q, which has a light specific gravity, is, for example, resin dust (hardened plastic). The resin dust is mainly composed of PP (polypropylene) and PE (polyethylene), and is used for pallets, building materials, etc. The ASR60r, which has a heavy specific gravity, is, for example, gold and silver slag.

[0058] The ASR60m and ASR60p are further separated in the next process in the ASR separation system 20. Here, the ASR60m and ASR60p are grouped together because they are of similar size due to the use of the crusher 203. In other words, in the later process of the ASR separation system 20, the separation process of the two types of ASR60m and ASR60p is performed using a common separation device. This makes it possible to reduce costs.

[0059] Fig. 10 is a block diagram showing an example of the configuration of the later process of the ASR separation system 20. As shown in Fig. 10, the ASR separation system 20 includes an optical sorter 211, an optical sorter 212, a crusher 213, a dry specific gravity sorter 214, a circular sieve 215, and a wet float-sink sorter (float-sink sorting device) 216 for the later process.

[0060] The optical sorter 211 separates the ASR 70, which is a collection of the ASR 60m and the ASR 60p, into metal 70a and non-metal 70b.

[0061] FIG. 11 is a schematic diagram showing an example of the optical sorting machine 211. As shown in FIG. 11, the optical sorting machine 211 uses the metal sensor 2112 to determine whether the ASR70 conveyed to the vicinity of the metal sensor 2112 by the belt conveyor 2111 is metallic or non-metallic. Then, the optical sorting machine 211 blows air from the air nozzle 2113 at a wind force according to the determination result by the metal sensor 2112 onto the ASR70. For example, when the ASR70 is metallic, the optical sorting machine 211 blows air from the air nozzle 2113 onto the metallic ASR70 to fly the ASR70 far away, and when the ASR70 is non-metallic, the optical sorting machine 211 does not blow air from the air nozzle 2113 onto the non-metallic ASR70 to drop the ASR70 nearby. As a result, the ASR70 is separated into either the metal 70a or the non-metal 70b.

[0062] The optical sorting machine 212 separates the metals 70a separated by the optical sorting machine 211 into non-crushable dust 70c and non-ferrous metals 70d. The non-crushable dust 70c is solidified and used as fuel for electric furnaces or as a reducing agent for blast furnaces. The non-ferrous metals 70d are specifically copper.

[0063] FIG. 12 is a schematic diagram showing an example of the optical sorting machine 212. As shown in FIG. 12, the optical sorting machine 212 uses the metal sensor 2122 to determine whether the metal 70a conveyed to the vicinity of the metal sensor 2112 by the belt conveyor 2121 is the non-crushable dust 70c or the non-ferrous metal 70d. Furthermore, the optical sorting machine 212 determines the type of the non-ferrous metal 70d based on the color of the metal 70a obtained from the image captured by the camera 2123. For example, when the color of the metal 70a is red, the optical sorting machine 212 determines that the metal 70a is copper. Then, the optical sorting machine 212 blows air from the air nozzle 2124 to the metal 70a with a wind force according to the determination result by the metal sensor 2122 and the analysis result of the image captured by the camera 2123. Thereby, the metal 70a is separated into either the non-crushable dust 70c or the non-ferrous metal 70d.

[0064] The crusher 213 crushes the non-ferrous metals 70d into smaller pieces using cutters or the like attached to the outer periphery of the rotating rotor. As a result, for example, a wire harness included in the non-ferrous metals 70d is separated into metal (copper) and a coating material. The dry specific gravity separator 214 separates the non-ferrous metals 70d crushed by the crusher 213 into non-ferrous metals 70f, which are copper with a high specific gravity, and residue 70e, which has a low specific gravity. The residue 70e is solidified and used as fuel for electric furnaces or as a reducing agent for blast furnaces. The circular sieve 215 separates the non-ferrous metals 70f into copper whisker wires 70g and copper 70h.

[0065] The wet sink-float separator 216 separates nonmetals 70b, which have been put into a liquid such as water, into nonmetals 70i that sink in the liquid and nonmetals 70j that float on the liquid. The nonmetals 70i that sink in the liquid are, for example, sink resin. The sink resin is used, for example, as fuel for sludge incineration. The nonmetals 70j that float on the liquid are, for example, floss resin. The floss resin is mainly composed of PP, PE, etc., and is used for pallets, building materials, etc.

[0066] Fig. 13 is a schematic cross-sectional view showing an example of the wet float-sink separator 216. Fig. 14 is a schematic perspective view showing the appearance of the wet float-sink separator 216. As shown in Figs. 13 and 14, the wet float-sink separator 216 includes a water tank 2161 containing water, a water supply pipe 2162, and an inlet 2164 for the non-metal 70b.

[0067] The water tank 2161 has a body part in the shape of a rectangular parallelepiped, and the bottom part is tapered toward the tip.

[0068] The water supply pipe 2162 is provided so that its nozzle 2163 is located inside (underwater) the water stored in the water tank 2161. In the example of Fig. 13 and Fig. 14, the water supply pipe 2162 is provided so as to extend in the vertical direction (z-axis direction) along the side surface of the body of the water tank 2161. The water supply pipe 2162 sprays water from the nozzle 2163.

[0069] Of the housing of water tub 2161, portion 2165 facing outlet 2163 of water supply pipe 2162 has an inclined surface, receives the water jetted from outlet 2163, and generates an upward water current in the water in water tub 2161 by the force of the received water. In other words, portion 2165 of the housing of water tub 2161 serves as a guide that uses the water jetted from outlet 2163 to generate an upward water current in the water in water tub 2161. Therefore, hereinafter, portion 2165 of the housing of water tub 2161 is also referred to as guide 2165. Guide 2165 not only generates an upward water current, but also serves to prevent non-metal 70b from stagnation in the water.

[0070] A first outlet 2166 is provided on a side surface of the body of the water tank 2161. More specifically, the first outlet 2166 is provided on a side surface of the body of the water tank 2161 that is located near the water surface in the water tank 2161. More specifically, a part of the opening of the first outlet 2166 is located below the water surface. As a result, of the non-metals 70b that are put into the water tank 2161 from the input port 2164, those that rise to the water surface are discharged from the first outlet 2166 together with the water. The water discharged from the first outlet 2166 is reused as water to be sprayed from the water supply pipe 2162.

[0071] A second discharge port 2167 is provided at the tip of the bottom of the water tank 2161. Of the non-metals 70b put into the water tank 2161 from the input port 2164, those that sink to the bottom of the water are discharged from the second discharge port 2167.

[0072] The wet float-sink sorter 216 discharges from a first discharge outlet 2166, among the non-metals 70b charged into the water tank 2161 from the charging inlet 2164, non-metals having a specific gravity lighter than water and non-metals that have risen to the surface on the rising water current as non-metals 70j, and discharges from a second discharge outlet 2167 non-metals 70i that are heavy and have not been carried by the rising water current and have sunk to the bottom of the water.

[0073] The wet float-sink separator 216 shown in Figures 13 and 14 can adjust the floating and sinking of a given crushed material by a water flow, and does not require adjustment using salt water or the like, thereby preventing corrosion of the device. In addition, this wet float-sink separator 216 can perform wet float-sink separation of the non-metals 70b with almost no power, thereby suppressing increases in costs. Furthermore, this wet float-sink separator 216 does not require a large-scale agitator, so it can be made compact.

[0074] The ASR separation system 20 may further include a control device (not shown) that controls the wet float-sink separator 216. For example, this control device analyzes the components of the non-metals 70j discharged from the first discharge outlet 2166 and the components of the non-metals 70i discharged from the second discharge outlet 2167, and adjusts the amount of water sprayed per unit time from the nozzle 2163 of the water supply pipe 2162 based on the analysis results. This makes it possible for the wet float-sink separator 216 to adjust the components of the non-metals 70j discharged from the first discharge outlet 2166 and the components of the non-metals 70i discharged from the second discharge outlet 2167.

[0075] 15 is a schematic cross-sectional view showing a wet float-sink separator 216a as a first modified example of the wet float-sink separator 216. Compared to the wet float-sink separator 216, the wet float-sink separator 216a further includes an agitator water wheel 2168.

[0076] The mixing water wheel 2168 is provided near the water surface. In the example of FIG. 15, the mixing water wheel 2168 is provided so that the rotation axis extending in the horizontal direction (x-axis direction) is located below the water surface and a part of the outer periphery is in contact with the water surface. The mixing water wheel 2168 mixes the water surface of the water tank 2161 by rotating. For example, the mixing water wheel 2168 rotates in the opposite direction to the first discharge port 2166 so as to mix the water surface. In the example of FIG. 15, the mixing water wheel 2168 rotates rightward as viewed in the negative x-axis direction. As a result, for example, air bubbles attached to the crushed material (non-metal 70b) are removed, and crushed material with a light specific gravity attached to crushed material with a heavy specific gravity is separated. As a result, crushed material that should not originally float to the surface sinks as intended, and crushed material that should not originally sink to the surface as intended. This allows the wet float-sink separator 216a to perform float-sink separation with higher accuracy.

[0077] The ASR separation system 20 may further include a control device (not shown) that controls the wet float-sink separator 216a. For example, the control device analyzes the components of the non-metals 70j discharged from the first discharge port 2166 and the components of the non-metals 70i discharged from the second discharge port 2167, and adjusts the amount of water to be sprayed per unit time from the nozzle 2163 of the water supply pipe 2162 based on the analysis results. Alternatively, the control device may adjust the rotation rate of the agitator water wheel 2168 based on the analysis results. This makes it possible for the wet float-sink separator 216a to adjust the components of the non-metals 70j discharged from the first discharge port 2166 and the components of the non-metals 70i discharged from the second discharge port 2167.

[0078] 16 is a schematic cross-sectional view showing a wet float-sink separator 216b as a second modified example of the wet float-sink separator 216. Compared to the wet float-sink separator 216a, the wet float-sink separator 216b further includes a guide 2169. That is, the wet float-sink separator 216b uses the guide 2169, which is an accessory, instead of using part of the housing of the water tank 2161 as a guide.

[0079] Guide 2169 is provided below outlet 2163 of water supply pipe 2162 in water tank 2161. Guide 2169 receives the water spouted from outlet 2163 of water supply pipe 2162, and generates an upward water current in the water tank by the force of the received water. For example, guide 2169 is formed in a downwardly convex arc shape so as to receive water spouted from outlet 2163 of water supply pipe 2162 at one end and cause the water to rise at the other end.

[0080] The wet float-sink separator 216b can achieve the same effect as the wet float-sink separator 216a.

[0081] The ASR separation system 20 may further include a control device (not shown) that controls the wet float-sink separator 216b. For example, the control device analyzes the components of the nonmetals 70j discharged from the first discharge port 2166 and the components of the nonmetals 70i discharged from the second discharge port 2167, and adjusts the amount of water to be sprayed from the nozzle 2163 of the water supply pipe 2162 per unit time based on the analysis results. Alternatively, the control device may adjust the rotation amount of the agitator water wheel 2168 based on the analysis results. Alternatively, the control device may adjust the angle of the guide 2169 based on the analysis results. This makes it possible for the wet float-sink separator 216b to adjust the components of the nonmetals 70j discharged from the first discharge port 2166 and the components of the nonmetals 70i discharged from the second discharge port 2167.

[0082] In this manner, in the sorting system according to the present disclosure, the ASR recovery system 10 can improve the recovery rate of organic components contained in ASR by using the blower and the second suction device to further recover organic components such as hardened plastics that could not be recovered by the first suction device alone. In other words, the ASR recovery system 10 can accurately separate and recover the crushed material generated by crushing vehicles.

[0083] In addition, in the sorting system according to the present disclosure, the ASR sorting system 20 can finely separate and collect the ASR collected from the crushed material generated by crushing the vehicle. Here, the ASR sorting system 20 performs a sorting process on the ASR collected from the crushed material after removing glass using a sieve, thereby preventing a breakdown of the sorting device due to glass. In addition, the ASR sorting system 20 can perform a sorting process for each of the two types of ASR using a common sorting device by crushing the ASR with a larger particle size among the ASRs sorted into two types of particle sizes. This suppresses an increase in costs. In addition, the ASR sorting system 20 performs dry specific gravity separation on the ASR from which the glass has been collected, thereby recovering the hardened plastic. In other words, the ASR sorting system 20 can finely separate and recover the ASR.

[0084] Furthermore, in the ASR separation system 20, the wet float-sink separator 216 can adjust the floating and sinking of certain crushed materials by water flow, and there is no need to use salt water or the like to adjust the floating and sinking of the material, which can prevent corrosion of the equipment. Also, the wet float-sink separator 216 can perform wet float-sink separation of ASR with almost no power, which can suppress increases in costs. Furthermore, the wet float-sink separator 216 does not require a large-scale agitator, which can realize miniaturization.

[0085] In addition, the present disclosure can be realized by causing a CPU (Central Processing Unit) to execute a computer program for part or all of the processing of the sorting system.

[0086] The above-mentioned program includes a set of instructions (or software code) for making the computer perform one or more functions described in the embodiment when the program is loaded into the computer. The program may be stored in a non-transitory computer-readable medium or a tangible storage medium. By way of example and not limitation, the computer-readable medium or the tangible storage medium includes a random-access memory (RAM), a read-only memory (ROM), a flash memory, a solid-state drive (SSD) or other memory technology, a CD-ROM, a digital versatile disc (DVD), a Blu-ray® disk or other optical disk storage, a magnetic cassette, a magnetic tape, a magnetic disk storage or other magnetic storage device. The program may be transmitted on a transitory computer-readable medium or a communication medium. By way of example and not limitation, the transitory computer-readable medium or the communication medium includes an electrical, optical, acoustic, or other form of propagating signal.

[0087] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above-mentioned embodiments. Various modifications that can be understood by a person skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure. Furthermore, each embodiment can be appropriately combined with other embodiments. [Explanation of symbols]

[0088] 10 ASR Recovery System 15 Control device 20 ASR Separation System 25 Sorting Machine 50 Crushed material 60 ASR 70 ASR 101 Conveyor Belt 102 Inlet 103 Upper feed roller 104 Lower Feed Roller 105 Crushing Room 106 Hammer 107 Sieve 108 Sieve 109 1st suction device 110 Suction port 111 Tray 112 Conveyor Belt 113 Separate room 114 Inlet 115 Outlet 116 Exhaust port (suction port of second suction device) 117 Blower 118 Second suction device 151 Drive unit 152 Analysis Department 153 Suction force adjustment section 154 Wind power adjustment section 201 Sieve 202 Wind Sorter 203 Crusher 204 Wind Sorter 205 Sieve 206 Dry Gravity Separator 207 Magnetic separator 208 Aluminum sorting machine 209 Sieve 210 Dry Gravity Separator 211 Optical sorting machine 212 Optical sorting machine 213 Crusher 214 Dry Gravity Separator 215 Circular Sieve 216 Wet float-sink separator 252 Inlet 253 Outlet 254 Outlet 2011 Materials 2012 Inlet 2013 outlet 2111 Conveyor belt 2112 Metal Sensor 2113 Air nozzle 2121 Conveyor belt 2122 Metal Sensor 2123 Camera 2124 Air nozzle 2161 Aquarium 2162 Water supply pipe 2163 Spout 2164 Input 2165 ガイド 2166 Exit 1 2167 Exit 2 2168 Water Mixer 2169 ガイド

Claims

1. A sorting system for sorting shredded material generated by shredding a vehicle, comprising: A sieve installed above the conveying path of the crushed material; A first suction device that sucks the crushed material from above the sieve and collects the crushed material that has passed through the sieve as a first crushed residue; a blower that blows air onto the crushed material that has not been collected by the first suction device; a second suction device that sucks the crushed material blown up by the wind of the blower from above the conveying path and collects it as a second crushed residue; A separation system equipped with

2. The blower is installed so as to be able to blow air from a lower side of a cylindrical transport path that transports the crushed objects not collected by the first suction device from an upper side to a lower side of the transport path, The second suction device is installed so as to be able to suck from an upper side of the cylindrical transport path. The sorting system of claim 1 .

3. Further, a control device is provided for controlling the suction force of the first suction device, the suction force of the second suction device, and the wind force of the blower. The sorting system of claim 1 .

4. The control device controls the suction force of the first suction device, the suction force of the second suction device, and the wind force of the blower according to components contained in the first crushed residue and the second crushed residue, respectively. The sorting system according to claim 3.

5. When the content rate of a predetermined metal in the first crushed residue and the second crushed residue is equal to or higher than a predetermined rate, the control device weakens at least one of the suction force of the first suction device, the suction force of the second suction device, and the wind force of the blower. The sorting system according to claim 4.

6. When a content rate of a predetermined organic component in the crushed material not recovered as the first crushing residue and the second crushing residue is equal to or higher than a predetermined rate, the control device increases at least one of the suction force of the first suction device, the suction force of the second suction device, and the wind force of the blower. The sorting system according to claim 3.

7. A sorting method for a sorting system that sorts crushed material generated by crushing a vehicle, comprising: The crushed material is sucked from above a sieve installed above the crushed material conveying path, and the crushed material that has passed through the sieve is collected as a first crushed residue; Blowing air against the crushed material that has not been collected as the first crushed residue; The crushed material blown up by the wind is sucked from the upper side of the transport path and collected as a second crushed residue. Separation method.

8. A control program for causing a computer to execute a sorting process in a sorting system that sorts crushed objects generated by crushing a vehicle, comprising: A process of sucking the crushed material from above a sieve installed above a conveying path of the crushed material and recovering the crushed material that has passed through the sieve as a first crushed residue; A process of blowing air onto the crushed material that has not been collected as the first crushed residue; a process of suctioning the crushed material blown up by the wind from an upper side of the transport path and recovering it as a second crushed residue; A control program that causes a computer to execute the above.

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