CN210791660U - Electrostatic sorting system - Google Patents

Abstract

The utility model discloses an electrostatic separation system, including the first grade sorter, first second grade sorter and second grade sorter, the input of the first grade sorter is used for receiving the supplied materials, the first grade sorter is equipped with the elementary branch silo of PP PE, the elementary branch silo of ABS and PS, the elementary branch silo of PP PE is used for collecting the plastic waste material that the principal ingredients is PP and/or PE, the elementary branch silo of ABS is used for collecting the plastic waste material that the principal ingredients is ABS, the elementary branch silo of PS is used for collecting the plastic waste material that the principal ingredients is PS, the elementary branch silo of ABS passes through ejection of compact conveying mechanism and is connected with the input of first second grade sorter, the elementary branch silo of PS passes through ejection of compact conveying mechanism and is connected with the input of second grade sorter, first second grade sorter is equipped with PA divides the silo, ABS secondary branch silo and first circulation branch silo.

Description

Electrostatic sorting system

Technical Field

The utility model relates to an electrostatic separation system.

Background

The main raw materials of the plastic waste are shells of white household appliances, black household appliances and the like, and the plastic waste is classified and recycled, so that the shells of the white household appliances, the black household appliances and the like are firstly crushed, and then the crushed plastic waste is subjected to electrostatic separation. The electrostatic separation link among the prior art only adopts an electrostatic separation machine to select separately, because electrostatic separation machine's the accuracy of selecting separately can receive the shape of plastic waste material granule, the factor influence of electric quantity, only relies on an electrostatic separation machine to select separately the plastic waste material and can make the material composition concentration degree of being selected separately and collecting the gained lower, mixes the material that has more other classification.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide an electrostatic separation system, which can improve the component concentration of collected materials.

The purpose of the utility model is realized by adopting the following technical scheme:

the electrostatic separation system comprises a first-stage separator, a first second-stage separator and a second-stage separator, wherein the input end of the first-stage separator is used for receiving incoming materials, the first-stage separator is provided with a PP/PE primary distributing groove, an ABS primary distributing groove and a PS primary distributing groove, the PP/PE primary distributing groove is used for collecting plastic waste with main components of PP and/or PE, the ABS primary distributing groove is used for collecting plastic waste with main components of ABS, the PS primary distributing groove is used for collecting plastic waste with main components of PS, the ABS primary distributing groove is connected with the input end of the first second-stage separator through a discharging conveying mechanism, the PS primary distributing groove is connected with the input end of the second-stage separator through a discharging conveying mechanism, the first second-stage separator is provided with a PA distributing groove, an ABS secondary distributing groove and a first circulating distributing groove, the second-level sorting machine is provided with a PP/PE secondary distributing groove, a PS secondary distributing groove and a second circulating distributing groove, the electrostatic sorting system comprises a first circulating conveying mechanism, the first circulating distributing groove and the second circulating distributing groove are connected with the first circulating conveying mechanism through a discharging output mechanism, and the output end of the first circulating conveying mechanism is connected with the input end of the first-level sorting machine.

Specifically, the PP/PE primary distributing groove outputs the collected materials to the electrostatic sorting system through an output conveying mechanism.

Specifically, the PA divides the silo to be used for collecting the plastic waste material that the principal ingredient is PA, the PA divides the silo to export the material collected through ejection of compact conveying mechanism in static sorting system, the ABS secondary divides the silo to be used for collecting the plastic waste material that the principal ingredient is ABS, the ABS secondary divides the silo to export the material collected through ejection of compact conveying mechanism in static sorting system, first circulation divides the silo to be used for collecting follow all the other plastic waste materials of first second grade sorter output.

Specifically, the PP/PE secondary material distribution tank is used for collecting plastic waste with PE and/or PP as main components, the PP/PE secondary material distribution tank outputs the collected materials to the electrostatic separation system through the discharge conveying mechanism, the PS secondary material distribution tank is used for collecting plastic waste with PS as main components, and the second circulation material distribution tank is used for collecting the rest of plastic waste output from the second secondary separator.

Specifically, the plastic waste treatment system comprises a first class-C sorting machine, wherein a PS secondary distributing groove is connected with the input end of the first class-C sorting machine through a discharge output mechanism, the first class-C sorting machine is provided with a PS terminal distributing groove, a third circulating distributing groove and a fourth circulating distributing groove, the PS terminal distributing groove is used for collecting plastic waste with PS as a main component, and the PS terminal distributing groove outputs the collected materials to the electrostatic sorting system through a discharge conveying mechanism.

Specifically, the third circulating material distribution groove is used for collecting the rest of plastic wastes output from the first class-C sorting machine, and the third circulating material distribution groove is connected with the first circulating conveying mechanism through a discharging conveying mechanism.

Specifically, the fourth circulation divides the silo to be used for collecting follows the remaining plastic waste material of part of first third grade sorter output, static sorting system includes second circulation conveying mechanism, the output of second circulation conveying mechanism with the input of first grade sorter is connected, the third circulation divides the silo to pass through ejection of compact conveying mechanism with second circulation conveying mechanism connects.

Specifically, the class A sorting machine comprises a first class A sorting machine and a second class A sorting machine, the input ends of the first class A sorting machine and the second class A sorting machine are used for receiving incoming materials, and the materials output by the first circulating conveying mechanism are conveyed to the input ends of the first class A sorting machine and the second class A sorting machine.

Specifically, the class A sorting machine comprises a first class A sorting machine and a second class A sorting machine, the input ends of the first class A sorting machine and the second class A sorting machine are used for receiving incoming materials, and the materials output by the second circulating conveying mechanism are conveyed to the input ends of the first class A sorting machine and the second class A sorting machine.

Specifically, the discharging and conveying mechanism is a vibrating conveyor.

Specifically, the first circulating conveying mechanism is a vibrating conveyor.

Specifically, the second circulating conveying mechanism is a vibrating conveyor.

Specifically, first grade sorter, first second grade sorter and second grade sorter all are equipped with friction passageway, conveyer belt and select separately the electrode, be equipped with the axis of rotation in the friction passageway, the axis of rotation is equipped with a plurality of stirring vane, stirring vane is used for the stirring material, makes the material rub each other and have the electric charge, warp the material of friction passageway output falls into extremely the conveyer belt, select separately the electrode and locate the output of conveyer belt, it is used for attracting/repelling the material that has the electric charge to select separately the electrode.

Specifically, first third grade sorter is equipped with friction passageway, conveyer belt and selects separately the electrode, be equipped with the axis of rotation in the friction passageway, the axis of rotation is equipped with a plurality of stirring vane, stirring vane is used for stirring the material, makes the material friction each other and have the electric charge, the warp the material of friction passageway output falls into extremely the conveyer belt, select separately the electrode and locate the output of conveyer belt, select separately the electrode and be used for attracting/repelling the material that has the electric charge.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the electrostatic separation system comprises a first-stage separator, a first second-stage separator and a second-stage separator, wherein the input end of the first-stage separator is used for receiving supplied materials, the first-stage separator is provided with a PP/PE primary distributing groove, an ABS primary distributing groove and a PS primary distributing groove, the ABS primary distributing groove is connected with the input end of the first second-stage separator through a discharging conveying mechanism, the PS primary distributing groove is connected with the input end of the second-stage separator through a discharging conveying mechanism, the first second-stage separator is provided with a PA distributing groove, an ABS secondary distributing groove and a first circulating distributing groove, the second-stage separator is provided with a PP/PE secondary distributing groove, a PS secondary distributing groove and a second circulating distributing groove, the electrostatic separation system comprises a first circulating conveying mechanism, and the first circulating distributing groove and the second circulating distributing groove are connected with the first circulating conveying mechanism through a discharging output mechanism, and the output end of the first circulating conveying mechanism is connected with the input end of the first-grade separator.

The electrostatic sorting system has a class a sorter and a class b sorter. The first-level separator is used for primary separation, part of specific sundries (PP/PE) are discharged, and the rest of sundries respectively enter the first second-level separator and the second-level separator for further separation, so that the first second-level separator discharges part of specific sundries (PA), and the second-level separator discharges part of specific sundries (PP/PE). The materials are sorted in two stages, and corresponding sundries can be sorted out in the corresponding sorting machine in a more targeted manner by properly adjusting the working voltage of the electrodes of the two-stage sorting machine, so that the component concentration of the collected materials is improved.

In addition, the electrostatic separation system comprises a first circulating conveying mechanism, the first circulating distribution groove and the second circulating distribution groove are connected with the first circulating conveying mechanism through a discharge output mechanism, so that materials which are not screened out by specific materials in the first second-level separator and the second-level separator can be conveyed to the first-level separator again through the first circulating conveying mechanism, separation is carried out again, and separation accuracy is improved.

Drawings

FIG. 1 is a general schematic diagram of a plastic waste treatment system;

FIG. 2 is a partial view of part A of the plastic waste disposal system;

FIG. 3 is a partial view of portion B of the plastic waste disposal system;

FIG. 4 is a partial view of portion C of the plastic waste disposal system;

FIG. 5 is a partial view of portion D of the plastic waste disposal system;

FIG. 6 is a top view of the plastic waste disposal system;

FIG. 7 is a schematic view of an electrostatic sorting system of the plastic waste treatment system.

In the figure: 1. a crusher; 21. a first separation sedimentation tank; 22. a second separation sedimentation tank; 31. a first friction washer; 41. a first vertical dehydrator; 42. a second vertical dehydrator; 43. a third vertical dehydrator; 44. a fourth vertical dehydrator; 45. a fifth vertical dehydrator; 46. a sixth vertical dehydrator; 47. a seventh vertical dehydrator; 51. a first silica gel remover; 52. a second silica gel remover; 53. a third silica gel removing machine; 61. a first heating stirrer; 62. a second heating stirrer; 71. a first class a classifier; 72. a second grade separator; 701. a PP/PE primary distributing groove; 702. an ABS primary distributing groove; 703. a PS primary distributing trough; 73. a first class B separator; 731. a PA distributing trough; 732. an ABS secondary distributing groove; 733. a first circulating material distributing groove; 74. a first circulating conveying mechanism; 75. a second fraction sorter; 751. a PP/PE secondary distributing groove; 752. a PS secondary distributing trough; 753. a second circulating material distributing groove; 76. a first class C separator; 761. a PS terminal distributing groove; 762. a third circulating material distributing groove; 763. a fourth circulating material distributing groove; 77. a second circulating conveying mechanism; 81. a third screw conveyor; 82. a fourth screw conveyor; 83. a seventh screw conveyor; 84. an eighth screw conveyor; 85. a second screw conveyor; 86. a sixth screw conveyor; 87. a first screw conveyor; 88. a fifth screw conveyor; 91. a second Z-shaped winnowing machine; 92. a first Z-shaped winnowing machine; 101. a first clean water tank; 102. a second clean water tank; 111. a first storage bin; 112. a second storage bin.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1 to 5, the plastic waste treatment system comprises a crusher 1, a first separation and sedimentation tank 21, an electrostatic separation system, and a second separation and sedimentation tank 22, wherein:

the crusher 1 is used for crushing plastic waste, specifically, the plastic waste to be sorted is derived from plastic shells of white appliances, black appliances and other appliances, such as computer display plastic shells and washing machine plastic shells, and the components of the plastic waste to be sorted mainly comprise PA, ABS, PS, PP and PE. The crusher 1 is used for crushing the plastic shell to form plastic particles, small blocks or sheets with the size of 15mm-25 mm. The output end of the crusher 1 is connected with a first separation and sedimentation tank 21, and the crushed plastic waste is conveyed to the first separation and sedimentation tank 21.

The first separation and sedimentation tank 21 performs water separation on the crushed plastic waste through the liquid stored in the first separation and sedimentation tank 21, specifically, the liquid stored in the first separation and sedimentation tank 21 is pure water, and the density of the pure water is specified to be 1 or close to 1 in the application, but the clarity and cleanliness of the water are not specified. The first separation sedimentation tank 21 is provided with a first floating material output end and a first bottom sediment output end. Under the buoyancy action of the purified water stored in the first separation sedimentation tank 21, the main components of PE (with the density of 0.95) and/or PP (with the density of 0.92) float on the water surface of the first separation sedimentation tank 21, and the rest plastic particles sink. Therefore, the main component of the material output by the first floating material output end is PE and/or PP. The first sediment material output end is connected with the electrostatic separation system, and the first separation sedimentation tank 21 does not float all materials containing PE and/or PP in the materials in the separation process, so that the first sediment material is a mixture of plastics containing PA, ABS, PS, PP, PE and the like.

The electrostatic separation system is provided with an ABS output end and a PS output end, wherein the main component of the material output by the ABS output end is ABS, and the main component of the material output by the PS output end is PS. The PS output end is connected to the second separation and sedimentation tank 22, and the second separation and sedimentation tank 22 further sorts the received materials, that is, the second separation and sedimentation tank 22 performs water sorting on the materials input through the PS output end by the stored liquid, specifically, the stored liquid of the second separation and sedimentation tank 22 is brine, the salinity of the brine is 5% to 9%, and the salinity of the brine is 7% in this embodiment. The second separation and sedimentation tank 22 is provided with a second floating material output end and a second bottom material output end. The density of the environment-friendly PS is lower than that of the salt water, and the density of the non-environment-friendly PS is higher than that of the salt water, so that the main component of the material output by the second floating material output end is the environment-friendly PS, and the main component of the material output by the second sediment output end is the non-environment-friendly PS.

Specifically, a first friction cleaning machine 31 and a first vertical dewatering machine 41 are connected between the crusher 1 and the first separation and sedimentation tank 21, wherein:

the input of first friction cleaning machine 31 is connected with the output of breaker 1, and the friction cleaning machine is used for wasing the material, and its principle is: the friction cleaning machine strongly stirs materials in a rotating process by virtue of the stirring sheet arranged on the rotating shaft in the machine so as to generate friction between the stirring sheet and the materials and between the materials, thereby playing a role in cleaning the materials.

The solids output of the first friction washer 31 is connected to the input of a first vertical extractor 41. The vertical dehydrator is used for dehydrating materials, and the principle is as follows: after the materials enter the vertical dehydrator, the materials are pushed and stirred by the spiral blade of the main shaft, the materials are rubbed in the screen mesh, so that impurities and dirt (such as small sand and stone and fine materials) are separated out under the friction action, then the materials are thrown out through the screen mesh under the action of water and centrifugal force, the rest materials to be treated are discharged from a discharge hole, and the dehydration efficiency of the rest materials to be treated is not lower than 98%. The solid output end of the first vertical dehydrator 41 is connected with the input end of the first separation and sedimentation tank 21. In particular, the input end of the crusher 1 is provided with a first screw conveyor 87. A second screw conveyer 85 is arranged between the first vertical dehydrator 41 and the first separation and sedimentation tank 21.

Specifically, the first float output end is connected with a third screw conveyor 81 and a second vertical dehydrator 42 in sequence, and the second vertical dehydrator 42 is used for dehydrating the first float. Preferably, the output end of the second vertical dehydrator 42 is connected to a first Z-type air separator 92, and the first Z-type air separator 92 is used for removing impurities such as dust and labels from the first floating material.

Specifically, the first bottom sediment output end is connected with the fourth screw conveyor 82 and the third vertical dehydrator 43 in sequence. The third vertical dehydrator 43 is configured to dehydrate the first sediment. A first heating stirrer 61 is connected between the output end of the third vertical dehydrator 43 and the electrostatic sorting system. The first heating stirrer 61 is used for heating the first sediment material so as to dry the first sediment material, so that the first sediment material can be better triboelectrically charged in the subsequent electrostatic sorting process. Preferably, a first silica gel remover 51 is connected between the output end of the third vertical dehydrator 43 and the first heating stirrer 61, and the first silica gel remover 51 is configured to remove silica gel impurities in the first seasoning. More preferably, a second Z-type air separator 91 is connected between the first silica gel remover 51 and the third vertical dehydrator 43, and the second Z-type air separator 91 is used to remove impurities such as dust and labels from the first bed material. Preferably, the output end of the first heating stirrer 61 is connected with a second heating stirrer 62, and the second heating stirrer 62 is used in cooperation with the first heating stirrer 61, that is, the first heating stirrer 61 preheats the material first, and the second heating stirrer 62 further heats the material, so that the material is dried more sufficiently and thoroughly, so as to generate electric charges by friction in a sorting machine in a subsequent electrostatic sorting system (in fig. 6, only one heating stirrer is shown in fig. 6 because the first heating stirrer 61 and the second heating stirrer 62 are arranged in the vertical direction). The output of the second heated agitator 62 is connected to a fifth screw conveyor 88, and the output of the fifth screw conveyor 88 is connected to the input of the electrostatic sorting system. In this embodiment, a first storage bin 111 is connected between the second Z-shaped winnowing machine 91 and the first silica gel removing machine 51, the first storage bin 111 is used for temporarily storing the material, and after the first storage bin 111 can temporarily store sufficient material, the material is conveyed to the first silica gel removing machine 51 connected with the first storage bin, so that the subsequent electrostatic separation process can be continuously and effectively performed.

With reference to fig. 4, 6 and 7, the electrostatic sorting system includes a first class a sorter 71 and a second class a sorter 72, and the respective input ends of the first class a sorter 71 and the second class a sorter 72 are connected to the output end of a fifth screw conveyor 88. The specific parameters such as "electrode polarity" and "electric field intensity" of each classifier in the electrostatic classification system are different and can be set according to the plastic component that the classifier is expected to obtain by classification, but it is needless to say that a certain plastic component that is expected to be obtained by classification means "enrichment of the component" and is not absolutely 100% composed of the component.

The first grade separator 71 and the second grade separator 72 are provided with three material distributing grooves, namely a PP/PE primary material distributing groove 701, an ABS primary material distributing groove 702 and a PS primary material distributing groove 703. The PP/PE primary distributing trough 701 is used for collecting plastic waste materials with PP and/or PE as main components, and the PP/PE primary distributing trough 701 outputs the collected materials to an electrostatic sorting system (along the direction a1 in fig. 7) through a discharging conveying mechanism (the discharging conveying mechanism is an external device, and is independent of a sorting machine, the same applies below), and collects the materials at a PP/PE first collecting place 781. The ABS primary distributing trough 702 is used for collecting plastic waste with ABS as a main component. The PS primary chute 703 is used to collect plastic waste with PS as the main component.

Specifically, the electrostatic sorting system includes a first second-stage sorter 73, and the ABS primary chute 702 is connected to the input end of the first second-stage sorter 73 by an outfeed conveyor mechanism. The ABS primary chute 702 of each of the first class-a sorter 71 and the second class-a sorter 72 conveys the plastic waste whose main component is ABS to the first class-b sorter 73 (in a direction a2 in fig. 7) by the discharge conveying mechanism.

The first second-stage sorter 73 is provided with a PA chute 731, an ABS secondary chute 732, and a first circulation chute 733. The PA chute 731 is used for collecting plastic waste with PA as a main component, and the PA chute 731 outputs the collected material to the electrostatic sorting system through the discharge conveying mechanism and collects the material at a PA collecting position 782 (along direction B1 in fig. 7).

The ABS secondary distributing chute 732 is configured to collect plastic waste whose main component is ABS, the ABS secondary distributing chute 732 outputs the collected material to the electrostatic sorting system through the discharging and conveying mechanism, and further conveys the material to the second silica gel removing machine 52 (along a direction B2 in fig. 7), and the second silica gel removing machine 52 is configured to remove silica gel impurities in the plastic waste whose main component is ABS. The first circulation chute 733 is used to collect the rest of the plastic wastes outputted from the first second-stage sorter 73.

The electrostatic sorting system is provided with a first circulating conveyor mechanism 74, and the first circulating sub-tank 733 is connected to the first circulating conveyor mechanism 74 through a discharge conveyor mechanism (the material discharged from the first circulating sub-tank 733 flows in a direction B3 in fig. 7). The output end (M in fig. 7) of the first circulating conveyor 74 is connected to the respective input ends of the first and second class-a classifiers 71 and 72. It should be noted that the drawings are only schematic, and the connection state of the output end of the first circulating conveyor 74 and the input ends of the first and second class-a classifiers 71 and 72 is not actually shown.

Specifically, the electrostatic sorting system includes a second secondary sorter 75 and a first tertiary sorter 76. The PS primary distributor 703 is connected to the input of the second secondary classifier 75 (in the direction a1 in fig. 7) by an outfeed conveyor mechanism. The second fraction sorter 75 is provided with a PP/PE secondary chute 751, a PS secondary chute 752 and a second recycle chute 753. The PP/PE secondary chute 751 is used for collecting waste plastic materials mainly comprising PE and/or PP, and the PP/PE secondary chute 751 outputs the collected materials to the electrostatic sorting system through the outfeed conveyor mechanism and collects the materials at the PP/PE secondary collection point 783 (the materials discharged from the PP/PE secondary chute 751 flows in the direction of C1 in fig. 7). The PS secondary chute 752 is used for collecting plastic waste with PS as a main component, and the PS secondary chute 752 outputs the collected material to the first sorting machine 76 through the discharge conveying mechanism (the flow direction of the material discharged from the PS secondary chute 752 is as indicated by a direction C2 in fig. 7). The second recycle chute 753 is used to collect the remaining plastic waste output from the second secondary fraction separator 75. The second circulation chute 753 is connected to the first circulation conveyor 74 via the discharge conveyor (the flow direction of the discharged material from the second circulation chute 753 is as indicated by direction C3 in fig. 7).

The first class-c sorter 76 is provided with a PS terminal chute 761, a third circulation chute 762, and a fourth circulation chute 763. The PS terminal material separating tank 761 is used for collecting plastic waste material whose main component is PS, and the PS terminal material separating tank 761 outputs the collected material to the electrostatic sorting system through the discharging and conveying mechanism, and inputs the collected material into the third silica gel removing machine 53 (the flow direction of the material discharged from the PS terminal material separating tank 761 is D1 in fig. 7). The third circulation material separating groove 762 is connected with the first circulation conveying mechanism 74 through the discharging conveying mechanism (the material discharged from the third circulation material separating groove 762 flows to the direction D2 in fig. 7).

The electrostatic sorting system includes a second circulating conveyor 77, and an output end (at N in fig. 7) of the second circulating conveyor 77 is connected to respective input ends of the first-stage sorter 71 and the second-stage sorter 72, and it should be noted that the illustration is made only, and a connection state of the output end of the second circulating conveyor 77 to the respective input ends of the first-stage sorter 71 and the second-stage sorter 72 is not actually shown. The fourth circulation sub-tank 763 is connected with the second circulation conveying mechanism 77 through the discharging conveying mechanism (the flow direction of the material discharged from the fourth circulation sub-tank 763 is as shown in a direction D3 in fig. 7).

The electrostatic sorting system has a first-stage sorter, a second-stage sorter and a third-stage sorter. The first-grade separator is used for primary separation, partial sundries (PP/PE) with high enrichment degree are discharged, and the rest sundries respectively enter the first second-grade separator 73 and the second-grade separator 75 for further separation. Then, the first class B separator 73 discharges the sundries (PA) with higher partial enrichment degree, and the second class B separator 75 discharges the sundries (PP/PE) with higher partial enrichment degree. Then, the second fraction separator 75 inputs part of the rest of the miscellaneous materials into the first third fraction separator 76, and the first third fraction separator 76 discharges part of the miscellaneous materials (PS) with higher enrichment degree.

The materials are sorted in three stages, so that corresponding sundries can be sorted out in corresponding sorting machines in a more targeted manner.

In addition, the electrostatic sorting system includes a first circulating conveyor 74 and a second circulating conveyor 77. The first circulation material distributing groove 733 and the second circulation material distributing groove 753 are connected with the first circulation conveying mechanism 74 through the material discharging output mechanism. The fourth circulating material separating groove 763 is connected with the second circulating conveying mechanism 77 through a material discharging conveying mechanism. Therefore, the material that has not been sorted by the specific material in the first second-stage sorting machine 73 and the second-stage sorting machine 75 can be conveyed to the first-stage sorting machine again by the first circulating conveying mechanism 74, and similarly, the material that has not been sorted by the specific material in the first third-stage sorting machine 76 can be conveyed to the first-stage sorting machine again by the second circulating conveying mechanism 77 to be sorted again. Through circulation sorting, improve the accuracy of sorting.

It should be noted that the first class a separator 71, the second class a separator 72, the first class b separator 73, the second class b separator 75 and the first class c separator 76 are all provided with a friction channel, a conveyor belt and a separation electrode, a rotating shaft is arranged in the friction channel, a plurality of stirring blades are arranged on the rotating shaft, the stirring blades are used for stirring materials, so that the materials are mutually rubbed to carry charges, the materials output through the friction channel fall into the conveyor belt, and the separation electrode is arranged at the output end of the conveyor belt.

The discharge conveying mechanism is a vibrating conveyor. The first endless conveying mechanism 74 is a vibrating conveyor. The second circulating conveyor 77 is a vibrating conveyor.

The output end of the third silica gel removing machine 53 (the input material is plastic waste with PS as the main component) is connected to a second storage bin 112, and the second storage bin 112 collects plastic waste with PS as the main component (including environment-friendly PS and non-environment-friendly PS). The output end of the second storage bin 112 is connected with a sixth screw conveyor 86, and the output end of the sixth screw conveyor 86 is connected with the second separation and sedimentation tank 22.

The plastic waste treatment system comprises a first plastic waste treatment water circulation system, and the first plastic waste treatment water circulation system comprises a crusher 1, a first friction cleaning machine 31, a first vertical dehydrator 41 and a first separation and sedimentation tank 21. The solid output of breaker 1 is connected with first friction cleaning machine 31, the solid output of first friction cleaning machine 31 is connected with first vertical hydroextractor 41, the solid output of first vertical hydroextractor 41 is connected with first separation sedimentation tank 21, first separation sedimentation tank 21 is equipped with first material output of floating and first sediment material output, first material output of floating has connected gradually third screw conveyer 81, the vertical hydroextractor 42 of second, first sediment material output has connected gradually fourth screw conveyer 82, the vertical hydroextractor 43 of third. The first plastic waste treatment water circulation system comprises a first vibrating screen, a reaction device, a water treatment sedimentation tank and an air floatation tank. The liquid output end of the first vibrating screen is connected with the reaction device, and the liquid output end of the reaction device is connected with the water treatment sedimentation tank. The liquid output end of the water treatment sedimentation tank is connected with the air floatation tank, and the liquid output end of the air floatation tank is connected with a second water storage tank. The liquid circulation structure of the first plastic waste treatment water circulation system is as follows:

the liquid output ends of the first friction cleaning machine 31 and the first vertical dehydrator 41 are connected with the input end of the first vibrating screen;

the output end of the second water storage tank is connected with the liquid input end of the first separation sedimentation tank 21;

the respective liquid output ends of the third screw conveyor 81, the fourth screw conveyor 82, the second vertical dehydrator 42, and the third vertical dehydrator 43 are connected to the respective liquid input ends of the crusher 1, the first friction washer 31, and the first vertical dehydrator 41.

Specifically, the input end of the first vibrating screen is connected with a first belt cutting submersible pump, and the respective output ends of the first friction cleaning machine 31 and the first vertical dehydrator 41 are connected with the first belt cutting submersible pump.

Specifically, the output end of the first vibrating screen is connected with a first water storage tank, and a first vertical submersible sewage pump is connected between the first water storage tank and the reaction device. Specifically, first plastic waste material handles water circulating system includes PAC charge device and PAM charge device, and PAC charge device and PAM charge device are each output and are connected with reaction unit, and PAM and PAC are the flocculating agent, and in the water treatment sedimentation tank, the floccule body that PAM and PAC formed makes debris such as colloid, insoluble particle in the sewage adhere to it to carry out the condensation to this colloid, insoluble particle.

Specifically, first plastic waste material treatment water circulating system is including holding the mud pond, and the respective output in water treatment sedimentation tank and air supporting pond all is connected with holding the mud pond. After the liquid in the water treatment sedimentation tank is conveyed to the air flotation tank, micro air bubbles are released from the bottom of the air flotation tank and attached to the floccule (colloid and insoluble particles are adhered to the floccule), so that the buoyancy of the floccule is increased and the floccule floats to the surface of the air flotation tank. Then, the floccule floating to the surface of the air floatation tank can be transferred to a sludge storage tank to finish the removal of the colloid and insoluble particles of the sewage. The liquid left in the floatation tank has relatively high degree of cleanliness and can be conveyed to the first separation and sedimentation tank 21 for separation.

Specifically, the output end of the sludge storage tank is connected with a diaphragm pump, the output end of the diaphragm pump is connected with a plate-and-frame filter press, and the liquid output end of the plate-and-frame filter press is connected with a second water storage tank.

Specifically, first plastic waste material treatment water circulating system includes the vertical stealthily dirty pump of second, and the input and the second water storage tank of the vertical stealthily dirty pump of second are connected, and the output and the first separation sedimentation tank 21 of the vertical stealthily dirty pump of second are connected.

Specifically, first plastic waste material treatment water circulating system includes second screw conveyer 85, and the solid input end of second screw conveyer 85 is connected with first vertical hydroextractor 41 solid output end, and the solid output end of second screw conveyer 85 is connected with the solid input end of first separation sedimentation tank 21.

Specifically, the first plastic waste treatment water circulation system includes a second belt-cutting submersible pump, and the respective liquid output ends of the third screw conveyor 81, the fourth screw conveyor 82, the second vertical dehydrator 42 and the third vertical dehydrator 43 are connected with the input end of the second belt-cutting submersible pump. The respective liquid input ends of the crusher 1, the first friction washer 31, the first vertical dehydrator 41 and the second screw conveyor 85 are all connected with a second submersible belt-cutting pump.

Specifically, first plastic waste material treatment water circulating system includes first screw conveyer 87, and the input of first area cutting immersible pump is connected with first screw conveyer 87's liquid output, and first screw conveyer 87's solid output is connected with breaker 1, and first screw conveyer 87's input is used for receiving the material.

Specifically, the first vibrating screen is a first circular vibrating screen.

Specifically, the water treatment sedimentation tank is an inclined plate sedimentation tank.

First friction cleaning machine 31 rubs the washing back exhaust liquid to the material to and first vertical hydroextractor 41 all exports first shale shaker to the material dehydration exhaust liquid, and first shale shaker filters this liquid, goes miscellaneous back, and liquid is imported to reaction unit and is further handled, makes the impurity in this liquid further by precipitation separation, forms the clear water, and clear water gets into the storage of second water storage box. The output end of the second water storage tank is connected with the liquid input end of the first separation sedimentation tank 21 and is used for supplementing the liquid stored in the first separation sedimentation tank 21.

The liquid discharged from each of the third screw conveyor 81, the fourth screw conveyor 82, the second vertical dehydrator 42 and the third vertical dehydrator 43 is derived from the liquid discharged from the first separation/precipitation tank 21 at the same time, and the discharged liquid is conveyed to the crusher 1, the first friction washer 31 and the first vertical dehydrator 41 to primarily wash the material initially entering the plastic waste treatment system.

In this way, the sewage after the material is cleaned by the three of the crusher 1, the first friction cleaning machine 31 and the first vertical dewatering machine 41 is filtered and decontaminated, and then is separated and precipitated to form clear water, and then is conveyed to the first separation and precipitation tank 21 for material separation. After the first separation/sedimentation tank 21 discharges, the liquid discharged from the third screw conveyor 81, the fourth screw conveyor 82, the second vertical dehydrator 42, and the third vertical dehydrator 43 is again fed to the crusher 1, the first friction washer 31, and the first vertical dehydrator 41 to wash the material.

The sewage discharged from the crusher 1, the first friction washer 31, and the first vertical dehydrator 41 is sent to a first vibrating screen, a reaction device, or the like to remove impurities and purify the sewage, thereby forming clean water. The clean water is then conveyed to the first separation and sedimentation tank 21 for material separation. After being sorted, the first separation and sedimentation tank 21 discharges materials to a third screw conveyor 81, a fourth screw conveyor 82, a second vertical dehydrator 42 and a third vertical dehydrator 43, when the third screw conveyor 81, the fourth screw conveyor 82, the second vertical dehydrator 42 and the third vertical dehydrator 43 work, the discharged liquid is 'secondary clean water', the cleanliness of the 'secondary clean water' is lower than that of the clean water in the first separation and sedimentation tank 21, and therefore the 'secondary clean water' is conveyed to the crusher 1, the first friction cleaning machine 31 and the first vertical dehydrator 41 to clean the materials which enter the plastic waste treatment system for the first time. The utility model discloses a plastic waste material treatment water circulating system realizes the circulation of this three water clean state of sewage, clear water, "inferior clear water" for water circulating system's water is used and is formed the self-loopa, thereby has reduced the emission of sewage, has realized environmental protection and energy saving.

The plastic waste treatment system comprises a second plastic waste treatment water circulation system, the second plastic waste treatment water circulation system comprises a second separation and sedimentation tank 22, and the second separation and sedimentation tank 22 is provided with a second floating water material output end and a second sediment material output end. The second float output end is connected with a seventh screw conveyor 83 and a fourth vertical dehydrator 44 in sequence. The second sediment output end is connected with an eighth screw conveyor 84 and a fifth vertical dehydrator 45 in sequence. The second plastic waste treatment water circulating system comprises a second vibrating screen and a third water storage tank, the liquid output end of the second vibrating screen is connected with the third water storage tank, and the liquid circulating structure of the second plastic waste treatment water circulating system is as follows:

the liquid output ends of the seventh screw conveyor 83, the fourth vertical dehydrator 44, the eighth screw conveyor 84 and the fifth vertical dehydrator 45 are all connected with the second vibrating screen;

the third reservoir is connected to the liquid input of the second separation and sedimentation tank 22.

Specifically, the second plastic waste material treatment water circulating system comprises a third belt cutting submersible pump, and the output end of the third belt cutting submersible pump is connected with the second vibrating screen. The liquid output ends of the seventh screw conveyor 83, the fourth vertical dehydrator 44, the eighth screw conveyor 84 and the fifth vertical dehydrator 45 are all connected with the third belt cutting submersible pump.

Specifically, the second plastic waste treatment water circulation system comprises a third vertical submersible sewage pump, the output end of the third water storage tank is connected with the third vertical submersible sewage pump, and the output end of the third vertical submersible sewage pump is connected with the liquid input end of the second separation sedimentation tank 22.

Specifically, the second plastic waste treatment water circulation system comprises a first clean water tank 101 and a sixth vertical dehydrator 46, wherein the solid output end of the fourth vertical dehydrator 44 is connected with the first clean water tank 101, and the solid output end of the first clean water tank 101 is connected with the sixth vertical dehydrator 46.

Specifically, the second plastic waste treatment water circulation system includes a third vibrating screen, and the respective liquid output ends of the first clean water tank 101 and the sixth vertical dehydrator 46 are connected to the third vibrating screen.

Specifically, the second plastic waste treatment water circulation system comprises a fourth belt cutting submersible pump, the respective liquid output ends of the first clean water tank 101 and the sixth vertical dehydrator 46 are connected with the fourth belt cutting submersible pump, and the output end of the fourth belt cutting submersible pump is connected with the third vibrating screen.

Specifically, the second plastic waste treatment water circulation system comprises a fourth water storage tank, the input end of the fourth water storage tank is connected with the liquid output end of the third vibrating screen, and the output end of the fourth water storage tank is connected with the first clean water tank 101.

Specifically, the second plastic waste treatment water circulation system comprises a fourth vertical submersible sewage pump, the output end of the fourth water storage tank is connected with the fourth vertical submersible sewage pump, and the output end of the fourth vertical submersible sewage pump is connected with the first clean water tank 101.

Specifically, the second plastic waste treatment water circulation system includes a second clean water tank 102 and a seventh vertical dehydrator 47. The solid output end of the fifth vertical dehydrator 45 is connected to the second clean water tank 102, and the solid output end of the second clean water tank 102 is connected to the seventh vertical dehydrator 47.

Specifically, the respective liquid output ends of the second clean water tank 102 and the seventh vertical dehydrator 47 are connected to the third vibrating screen.

Specifically, the second plastic waste treatment water circulation system comprises a fifth belt cutting submersible pump, the respective liquid output ends of the second clean water tank 102 and the seventh vertical dehydrator 47 are connected with the fifth belt cutting submersible pump, and the output end of the fifth belt cutting submersible pump is connected with the third vibrating screen.

Specifically, the input end of the fourth water storage tank is connected with the liquid output end of the third vibrating screen, and the output end of the fourth water storage tank is connected with the second clean water tank 102.

Specifically, the output end of the fourth water storage tank is connected with the fourth vertical submersible sewage pump, and the output end of the fourth vertical submersible sewage pump is connected with the second clean water tank 102.

Specifically, the second vibrating screen is a second circular vibrating screen.

The working principle of the second plastic waste treatment water circulation system is as follows: the liquid output ends of the seventh screw conveyor 83, the fourth vertical dewatering machine 44, the eighth screw conveyor 84 and the fifth vertical dewatering machine 45 are connected to the second vibrating screen. The third reservoir is connected to the liquid input of the second separation and sedimentation tank 22. The second separation sedimentation tank 22 discharges after sorting: the second float water is conveyed to the fourth vertical dehydrator 44 by the seventh screw conveyor 83, and the second bottom sediment is conveyed to the fifth vertical dehydrator 45 by the eighth screw conveyor 84. During the process of inputting the second float material to the seventh screw conveyor 83 and the process of inputting the second bottom material to the eighth screw conveyor 84, part of the liquid stored in the second separation and sedimentation tank 22 enters the seventh screw conveyor 83 and the eighth screw conveyor 84, so that the seventh screw conveyor 83 and the eighth screw conveyor 84 discharge the liquid during the process of conveying the materials. The fourth vertical dehydrator 44 and the fifth vertical dehydrator 45 also discharge liquid during the process of dehydrating the material by swinging. The liquid discharged by the seventh screw conveyor 83 and the eighth screw conveyor 84 and the liquid discharged by the fourth vertical dehydrator 44 and the fifth vertical dehydrator 45 are all conveyed to the second vibrating screen for impurity removal, and then conveyed to the third water storage tank for storage. The liquid stored in the third reservoir is replenished with a medicament to form a liquid, namely brine, which can be used by the second separation and sedimentation basin 22. The liquid stored in the third water storage tank is conveyed to a second separation sedimentation tank 22 for material separation.

In plastic waste material processing water circulating system, seventh screw conveyer 83, fourth vertical hydroextractor 44, the liquid that eighth screw conveyer 84 and fifth vertical hydroextractor 45 produced in the course of the work is carried to the second shale shaker in order to carry out the edulcoration, then is carried to the third water storage box and stores, so, can make seventh screw conveyer 83 carry, fourth vertical hydroextractor 44, the liquid that eighth screw conveyer 84 and fifth vertical hydroextractor 45 produced in the course of the work obtain cyclic utilization, avoid direct emission, thereby reduce the water waste. After adding the medicament to the third water storage tank, the liquid stored in the third water storage tank can be used by the second separation and sedimentation tank 22, so that the water can be recycled, the requirement of new municipal water is reduced, the water resource consumption is reduced, and the environment protection and energy saving are facilitated.

For the function or working principle of the crusher, reference may be made to patent documents 201610641070.4, CN104971811B, CN206296027U, CN206296028U, CN 106423466A;

for the function or working principle of the above friction cleaning machine, reference may be made to patent documents CN108357021A, CN103418570A, CN 205650554U;

for the function or working principle of the above separation and sedimentation tank, reference may be made to patent documents CN207841832U, CN107718367A, CN207240602U and CN 207240599U;

for the function or the operation principle of the vertical dehydrator, refer to patent documents CN 207065999U;

the function or working principle of the silica gel remover can be referred to patent document CN 201621262376;

the functions and operation principles of the above heating stirrer can be found in patent documents CN205980650U, CN204320143U, and CN 106288705A;

for the functions or working principles of the first-grade separator, the second-grade separator and the third-grade separator, reference may be made to patent documents CN208004155U, CN1326381A and CN 202498038U;

for the function or the operation principle of the Z-type air separator, reference may be made to patent documents CN203494791U, CN208466512U, CN106423865A, CN205914396U, and CN 203061434U;

for the function or operation principle of the screw conveyor, reference may be made to patent documents CN207312679U, CN208070688U, and CN 207450942U.

The patent literature discloses parts, elements, components or devices related to the creation of the present invention, and therefore, structural relationships, positional relationships, force relationships, motion relationships, energy relationships, momentum relationships, and the like between the parts, elements and devices, which are not mentioned herein, can be understood by referring to the above-cited patent literature. The technical content of the patent documents cited herein thus forms part of the present patent application. All published patent documents in the technical fields related to the creation of the present invention may provide prior art references to the present patent application, where necessary.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (14)

1. An electrostatic sorting system, characterized by: the automatic material sorting device comprises a first-level sorting machine, a first second-level sorting machine and a second-level sorting machine, wherein the input end of the first-level sorting machine is used for receiving incoming materials, the first-level sorting machine is provided with a PP/PE primary distributing groove, an ABS primary distributing groove and a PS primary distributing groove, the PP/PE primary distributing groove is used for collecting plastic waste materials with main components of PP and/or PE, the ABS primary distributing groove is used for collecting plastic waste materials with main components of ABS, the PS primary distributing groove is used for collecting plastic waste materials with main components of PS, the ABS primary distributing groove is connected with the input end of the first second-level sorting machine through a discharging conveying mechanism, the PS primary distributing groove is connected with the input end of the second-level sorting machine through a discharging conveying mechanism, the first second-level sorting machine is provided with a PA distributing groove, an ABS secondary distributing groove and a first circulating distributing groove, the second-level sorting machine is provided with a PP/PE secondary distributing groove, a PS secondary distributing groove and a second circulating distributing groove, the electrostatic sorting system comprises a first circulating conveying mechanism, the first circulating distributing groove and the second circulating distributing groove are connected with the first circulating conveying mechanism through a discharging output mechanism, and the output end of the first circulating conveying mechanism is connected with the input end of the first-level sorting machine.

2. The electrostatic sorting system of claim 1, wherein: the PP/PE primary material distribution groove outputs the collected materials to the electrostatic separation system through a discharge conveying mechanism.

3. The electrostatic sorting system of claim 1, wherein: the PA divides the silo to be used for collecting the plastic waste material that the principal ingredient is PA, the PA divides the silo to export the material collected through ejection of compact conveying mechanism in static sorting system, the ABS secondary divides the silo to be used for collecting the plastic waste material that the principal ingredient is ABS, the ABS secondary divides the silo to export the material collected through ejection of compact conveying mechanism in static sorting system, first circulation divides the silo to be used for collecting follow all the other plastic waste materials of first second grade sorter output.

4. The electrostatic sorting system of claim 1, wherein: the PP/PE secondary material distribution groove is used for collecting plastic waste with main components of PE and/or PP, the PP/PE secondary material distribution groove outputs the collected materials to the electrostatic separation system through the discharging and conveying mechanism, the PS secondary material distribution groove is used for collecting the plastic waste with the main component of PS, and the second circulating material distribution groove is used for collecting the rest plastic waste output from the second secondary separator.

5. The electrostatic sorting system of claim 4, wherein: the electrostatic sorting system comprises a first class-C sorting machine, wherein a PS secondary distributing groove is connected with the input end of the first class-C sorting machine through a discharge output mechanism, the first class-C sorting machine is provided with a PS terminal distributing groove, a third circulating distributing groove and a fourth circulating distributing groove, the PS terminal distributing groove is used for collecting plastic waste with PS as a main component, and the PS terminal distributing groove outputs the collected materials to the electrostatic sorting system through a discharge conveying mechanism.

6. The electrostatic sorting system of claim 5, wherein: the third circulating material distributing groove is used for collecting the rest of plastic waste materials output by the first class-C sorting machine, and the third circulating material distributing groove is connected with the first circulating conveying mechanism through a discharging conveying mechanism.

7. The electrostatic sorting system of claim 5, wherein: the fourth circulation divides the silo to be used for collecting follows the remaining plastic waste material of part of first third grade sorter output, the static is selected separately the system and is included the second circulation conveying mechanism, the output of second circulation conveying mechanism with the input of first grade sorter is connected, the third circulation divides the silo to pass through ejection of compact conveying mechanism with the second circulation conveying mechanism is connected.

8. The electrostatic sorting system of claim 1, wherein: the first-stage separator comprises a first-stage separator and a second-stage separator, the input ends of the first-stage separator and the second first-stage separator are used for receiving incoming materials, and the materials output by the first circulating conveying mechanism are conveyed to the input ends of the first-stage separator and the second first-stage separator.

9. The electrostatic sorting system of claim 7, wherein: the first-stage separator comprises a first-stage separator and a second-stage separator, the input ends of the first-stage separator and the second first-stage separator are used for receiving incoming materials, and the materials output by the second circulating conveying mechanism are conveyed to the input ends of the first-stage separator and the second first-stage separator.

10. The electrostatic sorting system according to any one of claims 1-7, wherein: the discharging and conveying mechanism is a vibrating conveyor.

11. The electrostatic sorting system of claim 1, wherein: the first circulating conveying mechanism is a vibrating conveyor.

12. The electrostatic sorting system of claim 7, wherein: the second circulating conveying mechanism is a vibrating conveyor.

13. The electrostatic sorting system of claim 1, wherein: a level sorter, first second level sorter and second level sorter all are equipped with friction passageway, conveyer belt and sorting electrode, be equipped with the axis of rotation in the friction passageway, the axis of rotation is equipped with a plurality of stirring vane, stirring vane is used for stirring material, makes the material rub each other and have the electric charge, warp the material of friction passageway output falls into extremely the conveyer belt, sorting electrode locates the output of conveyer belt, sorting electrode is used for attracting/repelling the material that has the electric charge.

14. The electrostatic sorting system of claim 1, wherein: first third grade sorter is equipped with friction passageway, conveyer belt and sorting electrode, be equipped with the axis of rotation in the friction passageway, the axis of rotation is equipped with a plurality of stirring vane, stirring vane is used for stirring the material, makes the material rub each other and have the electric charge, warp the material of friction passageway output falls into extremely the conveyer belt, sorting electrode locates the output of conveyer belt, sorting electrode is used for attracting/repelling the material that has the electric charge.

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