Sealant waste recycling equipment

Abstract

The utility model discloses sealant waste recycling equipment which comprises a pretreatment assembly and a sorting assembly, the pretreatment assembly comprises a low-temperature embrittlement cabin and a multi-tooth roller shearing crusher, a feeding port is formed in the low-temperature embrittlement cabin, a liquid nitrogen spraying device is arranged in the low-temperature embrittlement cabin so that sealant waste entering the low-temperature embrittlement cabin can be subjected to low-temperature embrittlement, an outlet of the low-temperature embrittlement cabin communicates with an inlet of the multi-tooth roller shearing crusher, and an outlet of the multi-tooth roller shearing crusher communicates with an outlet of the low-temperature embrittlement cabin; the sealant waste subjected to low-temperature embrittlement is fed into a multi-tooth-roller shearing crusher to be cut and crushed; the sorting assembly comprises an airflow sorting part, a vibration sorting part and an electrostatic sorting part, an inlet of the airflow sorting part is communicated with an outlet of the multi-tooth roller shearing crusher, an inlet of the vibration sorting part is communicated with an outlet of the airflow sorting part, and an inlet of the electrostatic sorting part is communicated with an outlet of the vibration sorting part. According to the utility model, the efficiency of separating plastic or metal bonded in the sealant waste from the sealant waste can be improved, so that the recovery treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealant waste treatment technical field especially is related to a sealant waste recycling equipment. BACKGROUND

[0002] The sealant waste contains harmful ingredients such as organic compounds and heavy metals, and if the sealant waste is discarded at will, it will pollute the soil and water, release toxic gases or toxic microplastics, and threaten the ecological environment and human health. Therefore, the sealant waste needs to be recycled and treated to make it harmless or recycled.

[0003] The existing sealant waste recycling equipment has the problems that when recycling and treating the sealant waste, the sealant waste is often bonded with plastic and metal and other substances, and it is difficult to separate them efficiently, so the separation process takes a long time, resulting in low treatment efficiency.

[0004] Therefore, it is urgent to develop a sealant waste recycling equipment to solve the above technical problems. SUMMARY

[0005] The utility model aims at providing a sealant waste recycling equipment, which can improve the separation efficiency of plastic or metal bonded with sealant waste in the sealant waste, and thus improve the recycling efficiency.

[0006] In order to achieve the above purpose, the utility model provides a sealant waste recycling equipment, and the specific implementation scheme is as follows:

[0007] A sealant waste recycling equipment, comprising a pretreatment assembly and a sorting assembly;

[0008] The pretreatment assembly comprises a low-temperature embrittlement cabin and a multi-tooth roller shearing crusher, the low-temperature embrittlement cabin is provided with an inlet for the sealant waste to enter, and a liquid nitrogen spraying device is arranged in the low-temperature embrittlement cabin to embrittle the sealant waste at low temperature, the outlet of the low-temperature embrittlement cabin is communicated with the inlet of the multi-tooth roller shearing crusher, and the low-temperature embrittled sealant waste is sent into the multi-tooth roller shearing crusher for cutting and crushing;

[0009] The sorting assembly comprises an air flow sorting part, a vibration sorting part and an electrostatic sorting part, the inlet of the air flow sorting part is communicated with the outlet of the multi-tooth roller shearing crusher, the inlet of the vibration sorting part is communicated with the outlet of the air flow sorting part, and the inlet of the electrostatic sorting part is communicated with the outlet of the vibration sorting part.

[0010] The utility model discloses a kind of sealant waste recycling equipment, relative to prior art, by the low-temperature embrittlement treatment of sealant waste in advance, the adhesive property of sealant waste is reduced at low temperature, and after the shear crushing treatment of sealant waste by multi-tooth roll shear crusher, it enters into airflow sorting part, using the different density characteristics between sealant, metal and plastic, preliminary sorting is carried out by airflow mode, then it enters into vibration sorting part and is further sorted by vibrating screening mode, finally it enters into electrostatic sorting part and is further sorted using the characteristics that metal conducts electricity and sealant does not conduct electricity, improve the efficiency of plastic or metal that is adhered in sealant waste and sealant waste separation, and then improve recycling efficiency.

[0011] In some embodiments, a brittle cavity is formed in the low-temperature embrittlement cabin, and the liquid nitrogen spraying device is arranged in the brittle cavity. The liquid nitrogen spraying device includes a liquid nitrogen spraying pipe hung at the top of the brittle cavity. A plurality of nozzles are arranged on the liquid nitrogen spraying pipe, and the inlet of the liquid nitrogen spraying pipe extends outside the low-temperature embrittlement cabin to connect a liquid nitrogen supply source.

[0012] By using the liquid nitrogen spraying method to cool the sealant waste, the low-temperature embrittlement convenience of the sealant waste is improved, the sealant adhesive property of the sealant waste is reduced, the adhesion between the sealant waste and metal and plastic is reduced, and the separation efficiency between the sealant waste and metal and plastic is improved.

[0013] In some embodiments, a guide plate is arranged between the low-temperature embrittlement cabin and the multi-tooth roll shear crusher. One end of the guide plate is connected to the outlet of the low-temperature embrittlement cabin, and the other end is in communication with the inlet of the multi-tooth roll shear crusher or located above the inlet of the multi-tooth roll shear crusher. The guide plate is inclined from top to bottom from the end close to the low-temperature embrittlement cabin to the end close to the multi-tooth roll shear crusher.

[0014] By arranging the guide plate between the low-temperature embrittlement cabin and the multi-tooth roll shear crusher, the efficiency of transferring the material from the low-temperature embrittlement cabin to the multi-tooth roll shear crusher is improved.

[0015] In some embodiments, an anti-sticking coating is arranged on the guide plate.

[0016] By arranging the anti-sticking coating on the guide plate, the blockage problem caused by material accumulation or secondary adhesion is avoided, the frequency of cleaning during shutdown is reduced, and the continuous operation capability of the pretreatment assembly is improved.

[0017] In some embodiments, the airflow sorting part includes a sealant collection bin and a sorting air duct, the inlet of the sorting air duct is connected with the outlet of the multi-toothed roller shearing crusher through a pipeline, the sorting air duct is in a tapered shape with a diameter gradually increasing from top to bottom, a negative pressure fan is arranged at the top end of the sorting air duct, the negative pressure fan is connected with the sealant collection bin through a pipeline, a high-pressure air pump is connected with the bottom end of the sorting air duct through a pipeline, and the bottom end of the sorting air duct extends to above the vibration sorting part through a pipeline.

[0018] By adopting the structure of the sorting air duct cooperating with the negative pressure fan and the high-pressure air pump as the airflow sorting part, the top negative pressure fan and the high-pressure air pump cooperatively realize the efficient sorting of the sealant waste, metals and plastics.

[0019] In some embodiments, the vibration sorting part includes a high-frequency micro-amplitude vibrating screen, the outlet end of the sorting air duct is located above the high-frequency micro-amplitude vibrating screen, and a piezoelectric ceramic vibrator is arranged at the bottom of the high-frequency micro-amplitude vibrating screen.

[0020] The piezoelectric ceramic vibrator transmits vibration to the high-frequency micro-amplitude vibrating screen, and the sealant waste, metals and plastics passing through the high-frequency micro-amplitude vibrating screen are sorted again, the fragments of metals and plastics pass through the screen mesh and are recovered, and are separated from the sealant waste remaining on the high-frequency micro-amplitude vibrating screen.

[0021] In some embodiments, a polytetrafluoroethylene glue-repellent coating is arranged on the surface of the screen mesh of the high-frequency micro-amplitude vibrating screen, the aperture of the screen mesh is 0.5-2 mm, and a flow guide groove is arranged below the screen mesh.

[0022] The flow guide groove arranged below the screen mesh guides the sealant waste to a special storage container during actual use, improving the recovery stability, and the polytetrafluoroethylene glue-repellent coating arranged on the surface of the screen mesh reduces the adhesion of the sealant, ensures that the screen holes remain unblocked for a long time, and the fragments of metals and plastics pass through smoothly, improving the separation efficiency.

[0023] In some embodiments, the electrostatic sorting part includes a box body, a corona roller and an electrode plate, the corona roller and the electrode plate are arranged in parallel in the box body, the corona roller is located above the electrode plate, the electrode plate is connected with a high-voltage power supply, and the distance between the corona roller and the electrode plate is 10-50 mm.

[0024] In some embodiments, a ceramic insulating layer is arranged on the outer wall of the corona roller, and the electrode plate is a sawtooth-shaped copper plate with a sawtooth spacing of 2-5 mm.

[0025] By setting a ceramic insulation layer on the outer wall of the corona roller, the uniformity of the electric field and the stability of the discharge are enhanced, the risk of arc breakdown is avoided, and the adsorption efficiency of the conductive metal particles is improved by using the sawtooth edge field strength concentration effect.

[0026] In some embodiments, a first conveying belt and a second conveying belt are further included, the first conveying belt is arranged on the low-temperature embrittlement cabin and extends out of the feed port of the low-temperature embrittlement cabin at one end and extends to the position of the discharge port of the low-temperature embrittlement cabin at the other end, and the second conveying belt is arranged on the electrostatic separation part and extends to the position of the outlet of the vibration separation part at one end and extends to the position of the outlet of the electrostatic separation part at the other end.

[0027] By using the first conveying belt to realize the transfer of the sealant waste to and from the low-temperature embrittlement cabin and using the second conveying belt to realize the transfer of the sealant waste from the vibration separation part to the electrostatic separation part, the stability of the sealant waste in the transfer and transportation process is improved.

[0028] Based on the above technical scheme, the utility model has the following beneficial effects compared with the prior art:

[0029] By pre-treating the sealant waste by low-temperature embrittlement, the adhesion of the sealant waste is reduced at low temperature, and then the sealant waste is sheared and crushed by the multi-tooth roller shearing crusher and enters the air flow separation part, the sealant, metal and plastic are preliminarily separated by air flow according to the different density characteristics, then enter the vibration separation part for further separation by vibration screening, and finally enter the electrostatic separation part for further separation according to the characteristics of metal conductivity and sealant non-conductivity, the efficiency of separating the plastic or metal adhered to the sealant waste is improved, and the recycling efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic view of the utility model;

[0031] Figure 2 It is a sectional view of the pretreatment assembly of the utility model;

[0032] Figure 3 It is a structural schematic view of the air flow separation part of the utility model;

[0033] Figure 4 It is a structural schematic view of the electrostatic separation part of the utility model.

[0034] BRIEF DESCRIPTION OF DRAWINGS:

[0035] 100. Pretreatment component; 110. Low-temperature embrittlement chamber; 111. Embrittlement cavity; 112. Liquid nitrogen spray pipe; 113. Nozzle; 120. Multi-toothed roller shear crusher; 130. Guide plate; 200. Sorting component; 210. Airflow sorting section; 211. Sorting duct; 212. Negative pressure fan; 213. High-pressure air pump; 214. Sealant collection bin; 220. Vibration sorting section; 221. High-frequency micro-amplitude vibrating screen; 222. Screen; 223. Piezoelectric ceramic vibrator; 224. Guide channel; 230. Electrostatic sorting section; 231. Box; 232. Corona roller; 233. Electrode plate; 300. First conveyor belt; 400. Second conveyor belt. Detailed Implementation

[0036] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0037] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0038] Unless otherwise specified or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0039] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0040] like Figures 1-4 As shown, the sealant waste recycling and processing equipment provided in this embodiment includes a pretreatment component 100 and a sorting component 200;

[0041] The pretreatment component 100 includes a low-temperature embrittlement chamber 110 and a multi-toothed roller shear crusher 120. The low-temperature embrittlement chamber 110 is provided with a feed inlet for sealant waste to enter, and a liquid nitrogen spraying device is provided inside the low-temperature embrittlement chamber 110 to embrittle the sealant waste entering the low-temperature embrittlement chamber 110 at low temperature. The outlet of the low-temperature embrittlement chamber 110 is connected to the inlet of the multi-toothed roller shear crusher 120, so that the low-temperature embrittled sealant waste is sent into the multi-toothed roller shear crusher 120 for cutting and crushing.

[0042] The sorting assembly 200 includes an airflow sorting section 210, a vibration sorting section 220, and an electrostatic sorting section 230. The inlet of the airflow sorting section 210 is connected to the outlet of the multi-toothed roller shear crusher 120, the inlet of the vibration sorting section 220 is connected to the outlet of the airflow sorting section 210, and the inlet of the electrostatic sorting section 230 is connected to the outlet of the vibration sorting section 220.

[0043] In some embodiments, the low-temperature embrittlement chamber 110 is provided with an embrittlement cavity 111, and the liquid nitrogen spraying device is arranged in the embrittlement cavity 111. The liquid nitrogen spraying device comprises a liquid nitrogen spraying pipe 112, which is hung at the top of the embrittlement cavity 111. A plurality of nozzles 113 are arranged on the liquid nitrogen spraying pipe 112, and the inlet of the liquid nitrogen spraying pipe 112 extends out of the low-temperature embrittlement chamber 110 to connect a liquid nitrogen supply source.

[0044] By using the liquid nitrogen spraying method to cool the sealant waste, the low-temperature embrittlement convenience of the sealant waste is improved, the sealant adhesion of the sealant waste is reduced, the adhesion between the sealant waste and metal and plastic is reduced, and the separation efficiency between the sealant waste and metal and plastic is improved.

[0045] In some embodiments, a guide plate 130 is arranged between the low-temperature embrittlement chamber 110 and the multi-tooth roller shear crusher 120. One end of the guide plate 130 is connected with the outlet of the low-temperature embrittlement chamber 110, the other end is communicated with or located above the inlet of the multi-tooth roller shear crusher 120, and the guide plate 130 is arranged from top to bottom from the side close to the low-temperature embrittlement chamber 110 to the side close to the multi-tooth roller shear crusher 120.

[0046] By arranging the guide plate 130 between the low-temperature embrittlement chamber 110 and the multi-tooth roller shear crusher 120, the efficiency of transferring the material from the low-temperature embrittlement chamber 110 to the multi-tooth roller shear crusher 120 is improved.

[0047] In some embodiments, an anti-sticking coating is arranged on the guide plate 130.

[0048] By arranging the anti-sticking coating on the guide plate 130, the blockage problem caused by material accumulation or secondary adhesion is avoided, the cleaning frequency during shutdown is reduced, and the continuous operation ability of the pretreatment assembly 100 is improved.

[0049] In some embodiments, the airflow sorting part 210 comprises a sealant collection bin 214 and a sorting air duct 211. The inlet of the sorting air duct 211 is connected with the outlet of the multi-tooth roller shear crusher 120 through a pipeline. The sorting air duct 211 is in a conical shape with a diameter gradually increasing from top to bottom. A negative pressure fan 212 is arranged at the top end of the sorting air duct 211. The negative pressure fan 212 is connected with the sealant collection bin 214 through a pipeline. A high-pressure air pump 213 is connected with the bottom end of the sorting air duct 211 through a pipeline. The bottom end of the sorting air duct 211 extends above the vibration sorting part 220 through a pipeline.

[0050] By adopting the structure of the sorting air duct 211 matched with the negative pressure fan 212 and the high-pressure air pump 213 as the airflow sorting part 210, the top negative pressure fan 212 performs negative pressure adsorption of the light material on the top of the sorting air duct 211, and the high-pressure water pump performs high-pressure lifting of the heavy material on the bottom of the sorting air duct 211, thereby achieving efficient sorting of the sealant waste, metal and plastic.

[0051] In some embodiments, the vibration sorting part 220 includes a high-frequency micro-amplitude vibration screen 221, and the outlet end of the sorting air duct 211 is located above the high-frequency micro-amplitude vibration screen 221, and a piezoelectric ceramic vibrator 223 is arranged at the bottom of the high-frequency micro-amplitude vibration screen 221.

[0052] The piezoelectric ceramic vibrator 223 transmits vibration to the high-frequency micro-amplitude vibration screen 221, and the sealant waste, metal and plastic passing through the high-frequency micro-amplitude vibration screen 221 are sorted again, and the fragments of metal and plastic pass through the screen 222 and are separated from the sealant waste remaining on the high-frequency micro-amplitude vibration screen 221.

[0053] In some embodiments, a polytetrafluoroethylene glue-repellent coating is arranged on the surface of the screen 222 of the high-frequency micro-amplitude vibration screen 221, the aperture of the screen 222 is 0.5-2 mm, and a flow guide groove 224 is arranged below the screen 222.

[0054] The flow guide groove 224 arranged below the screen 222 guides the sealant waste to a special storage container in actual use, thereby improving the recycling stability; the polytetrafluoroethylene glue-repellent coating arranged on the surface of the screen 222 reduces the adhesion of the sealant, ensures that the screen hole remains unblocked for a long time, and enables the fragments of metal and plastic to pass through smoothly, thereby improving the separation efficiency.

[0055] In some embodiments, the electrostatic sorting part 230 includes a box body 231, a corona roller 232 and an electrode plate 233, the corona roller 232 and the electrode plate 233 are arranged in parallel in the box body 231, the corona roller 232 is located above the electrode plate 233, the electrode plate 233 is connected to a high-voltage power supply, and the distance between the corona roller 232 and the electrode plate 233 is 10-50 mm.

[0056] In some embodiments, a ceramic insulation layer is arranged on the outer wall of the corona roller 232, and the electrode plate 233 is a sawtooth-shaped copper plate with a sawtooth spacing of 2-5 mm.

[0057] The ceramic insulation layer arranged on the outer wall of the corona roller 232 enhances the uniformity of the electric field and the stability of the discharge, avoids the risk of arc breakdown, and simultaneously improves the adsorption efficiency of the conductive metal particles by using the sawtooth edge field strength concentration effect.

[0058] In some embodiments, a first conveying belt 300 is arranged on the low-temperature embrittlement chamber 110, one end of which extends to the outside of the feed port of the low-temperature embrittlement chamber 110, and the other end extends to the position of the discharge port of the low-temperature embrittlement chamber 110; and a second conveying belt 400 is arranged on the electrostatic separation part 230, one end of which extends to the outlet position of the vibration separation part 220, and the other end extends to the outlet position of the electrostatic separation part 230.

[0059] By using the first conveying belt 300 to realize the sealing glue waste to enter and exit the low-temperature embrittlement chamber 110, and using the second conveying belt 400 to realize the sealing glue waste to transfer from the vibration separation part 220 to the electrostatic separation part 230, the stability of the sealing glue waste in the transfer and transportation in the processing process is improved.

[0060] The sealing glue waste recycling device provided by the embodiment, compared with the prior art, by pre-treating the sealing glue waste by low-temperature embrittlement, the adhesion of the sealing glue waste is reduced at low temperature, and then the sealing glue waste is sheared and crushed by the multi-tooth roller shearing crusher 120 and enters the air flow separation part 210, the sealing glue, metal and plastic are preliminarily separated by the air flow according to the different density characteristics, then enter the vibration separation part 220 for further separation by vibration screening, and finally enter the electrostatic separation part 230 for further separation according to the characteristics that metal is conductive and sealing glue is non-conductive, the efficiency of separating the plastic or metal adhered to the sealing glue waste is improved, and the recycling efficiency is improved.

[0061] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A sealant waste recycling apparatus, characterized by comprising: The system comprises a pretreatment assembly (100) and a sorting assembly (200); The pretreatment assembly (100) comprises a low-temperature embrittlement cabin (110) and a multi-tooth roller shear crusher (120), the low-temperature embrittlement cabin (110) is provided with an inlet for the sealant waste to enter, and a liquid nitrogen spraying device is arranged in the low-temperature embrittlement cabin (110) to embrittle the sealant waste in the low-temperature embrittlement cabin (110), the outlet of the low-temperature embrittlement cabin (110) is communicated with the inlet of the multi-tooth roller shear crusher (120), and the embrittled sealant waste is sent into the multi-tooth roller shear crusher (120) for cutting and crushing. The sorting assembly (200) comprises an air flow sorting part (210), a vibration sorting part (220) and an electrostatic sorting part (230), the inlet of the air flow sorting part (210) is communicated with the outlet of the multi-tooth roller shear crusher (120), the inlet of the vibration sorting part (220) is communicated with the outlet of the air flow sorting part (210), and the inlet of the electrostatic sorting part (230) is communicated with the outlet of the vibration sorting part (220).

2. The sealant waste recycling apparatus according to claim 1, wherein The low-temperature embrittlement cabin (110) is formed with an embrittlement cavity (111), the liquid nitrogen spraying device is arranged in the embrittlement cavity (111), the liquid nitrogen spraying device comprises a liquid nitrogen spraying pipe (112) which is hung at the top of the embrittlement cavity (111), a plurality of nozzles (113) are arranged on the liquid nitrogen spraying pipe (112), and the inlet of the liquid nitrogen spraying pipe (112) extends to the outside of the low-temperature embrittlement cabin (110) to be connected with a liquid nitrogen supply source.

3. The sealant waste recycling apparatus according to claim 1, wherein A guide plate (130) is arranged between the low-temperature embrittlement cabin (110) and the multi-tooth roller shear crusher (120), one end of the guide plate (130) is connected with the outlet of the low-temperature embrittlement cabin (110), the other end is communicated with or located above the inlet of the multi-tooth roller shear crusher (120), and the guide plate (130) is inclined from top to bottom from the end close to the low-temperature embrittlement cabin (110) to the end close to the multi-tooth roller shear crusher (120).

4. The sealant waste recycling apparatus according to claim 3, wherein An anti-sticking coating is arranged on the guide plate (130).

5. The sealant waste recycling apparatus according to claim 1, wherein The air flow sorting part (210) comprises a sealant collection bin (214) and a sorting air duct (211), the inlet of the sorting air duct (211) is connected with the outlet of the multi-tooth roller shear crusher (120) through a pipeline, the sorting air duct (211) is in a conical shape with a diameter gradually increasing from top to bottom, a negative pressure fan (212) is arranged at the top end of the sorting air duct (211), the negative pressure fan (212) is connected with the sealant collection bin (214) through a pipeline, a high-pressure air pump (213) is connected with the bottom end of the sorting air duct (211) through a pipeline, and the bottom end of the sorting air duct (211) extends to above the vibration sorting part (220) through a pipeline.

6. The sealant waste recycling apparatus according to claim 5, wherein The vibration sorting part (220) includes a high-frequency micro-amplitude vibrating screen (221), and an outlet end of the sorting air duct (211) is located above the high-frequency micro-amplitude vibrating screen (221), and a piezoelectric ceramic vibrator (223) is arranged at the bottom of the high-frequency micro-amplitude vibrating screen (221).

7. The sealant waste recycling apparatus according to claim 6, wherein A polytetrafluoroethylene glue-repellent coating is arranged on the surface of a screen (222) of the high-frequency micro-amplitude vibrating screen (221), the screen (222) has a pore size of 0.5-2 mm, and a flow guide groove (224) is arranged below the screen (222).

8. The sealant waste recycling apparatus according to claim 7, wherein The electrostatic sorting part (230) includes a box body (231), a corona roller (232) and an electrode plate (233), the corona roller (232) and the electrode plate (233) are arranged in parallel in the box body (231), the corona roller (232) is located above the electrode plate (233), the electrode plate (233) is connected to a high-voltage power supply, and the distance between the corona roller (232) and the electrode plate (233) is 10-50 mm.

9. The sealant waste recycling apparatus of claim 8, wherein A ceramic insulation layer is arranged on the outer wall of the corona roller (232), and the electrode plate (233) is a sawtooth-shaped copper plate with a sawtooth spacing of 2-5 mm.

10. The sealant waste recycling apparatus according to any one of claims 1 to 9, wherein The device further includes a first conveying belt (300) and a second conveying belt (400), the first conveying belt (300) is arranged on the low-temperature embrittlement cabin (110) and extends to the outside of the feed inlet of the low-temperature embrittlement cabin (110) at one end and to the position of the discharge outlet of the low-temperature embrittlement cabin (110) at the other end, and the second conveying belt (400) is arranged on the electrostatic sorting part (230) and extends to the outlet position of the vibration sorting part (220) at one end and to the outlet position of the electrostatic sorting part (230) at the other end.

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