Electrostatic separation and recovery device for waste plastic particles

Abstract

The invention relates to the technical field of waste plastic recovery, and provides a waste plastic particle electrostatic separation and recovery device which comprises a bearing frame and further comprises an impurity removal assembly, an impurity collection assembly, a feeding hopper, a feeding assembly, a discharging hopper, a discharging assembly and a separation and recovery assembly, a separation box is fixedly installed at the top of the bearing frame, and the impurity removal assembly is installed in the bearing frame; the impurity collecting assembly is installed on the impurity removing assembly, the feeding hopper is fixedly installed on the bearing frame, the feeding assembly is installed at the feeding end of the bearing frame, the discharging hopper is fixedly installed at the top of the sorting box, the discharging assembly is installed on the bearing frame, and the sorting and recycling assembly is installed in the sorting box. The problems that in the prior art, due to the fact that various impurities are mixed in plastic particles, the electrical resistivity of the plastic particles is affected, the electric field intensity distribution among the particles is uneven, and the sorting error is large are solved.

Description

Technical Field

[0001] The invention relates to the technical field of waste plastic recycling, and in particular to a waste plastic particle electrostatic separation and recycling device. Background Art

[0002] In order to reduce pollution to the environment and reduce the exploitation and consumption of natural resources, it is necessary to recycle waste plastic particles, which can reduce the energy consumed in the production of new plastics, reduce the cost of raw materials for the production of new plastics, and make the entire production process more economical and efficient. There are many types of waste plastic particles, but due to the great differences in chemical structure and physical properties between different types of plastics, this leads to poor compatibility between different types of plastics. The processing performance of composite materials made by mixing them together often decreases, which will affect product quality and output. At the same time, due to the great differences in chemical structure between different types of plastics, this may release harmful gases, leading to environmental pollution and safety problems. In order to ensure the recycling and utilization of plastic particles, it is necessary to classify and recycle them according to different types of plastics.

[0003] The plastic particle electrostatic sorting and recovery device is a device used to classify and recycle plastic particles. It separates different types of plastic particles through electrostatic separation technology, thereby achieving precise separation of different components in the mixture. This equipment is widely used in the plastics industry, packaging industry and other fields, and can help companies improve production efficiency and reduce costs.

[0004] When sorting and recycling plastic particles, there may be some external impurities in the plastic particles, such as fibers, metals, etc. These impurities will affect the conductivity and separation effect of the particles. First, the presence of impurities will increase the resistivity of the particles, making the electric field strength distribution between the particles more uneven. Especially under high electric fields, the electric field gradient between the particles will be greater, which will make the charge more concentrated and increase the possibility of sorting errors, thereby affecting the effect of electrostatic separation. At the same time, the attachment of impurities will also cause the size of plastic particles to be inconsistent, which will affect the average particle size of the plastic particles, causing our sorting parameters to change, thus affecting the separation effect. Summary of the invention

[0005] The present invention proposes an electrostatic sorting and recovery device for waste plastic particles, which solves the problem in the related art that the resistivity of the plastic particles is affected due to various impurities mixed in the plastic particles, resulting in uneven distribution of electric field strength between the particles, resulting in large sorting errors.

[0006] The technical solution of the present invention is as follows: A waste plastic particle electrostatic sorting and recycling device comprises a carrier frame, a sorting box is fixedly mounted on the top of the carrier frame, and further comprises: An impurity removal component, which is installed inside the carrier and is used to process impurities attached to the plastic particles to be sorted; An impurity collecting component, which is installed on the impurity removing component and is used to collect impurity particles during the impurity removing process; A feed hopper, the feed hopper is fixedly mounted on the supporting frame; A feeding assembly, which is installed at the feeding end of the carrier frame and is used to convey the plastic particles to be sorted into the impurity removal assembly; A discharge hopper, the discharge hopper is fixedly mounted on the top of the sorting box; A discharge assembly, which is mounted on the carrier frame and is used to deliver the plastic particles after impurities are removed into the discharge hopper; A sorting and recycling component is installed inside the sorting box and is used for sorting and recycling plastic particles.

[0007] On the basis of the above scheme, the impurity removal component includes: A debris removal cylinder, the debris removal cylinder is fixedly installed inside the supporting frame; A transmission shaft, the transmission shaft being rotatably mounted inside the impurity removal barrel; A spiral scraper, the spiral scraper is fixedly mounted on the transmission shaft, and the spiral scraper is in sliding contact with the inner wall of the impurity removal cylinder; Impact plates, a plurality of impact plates are fixedly mounted on the transmission shaft at equal distances.

[0008] On the basis of the above solution, the impurity collection assembly includes a filter, the filter is fixedly mounted on the carrier, and further includes: A material unloading rack, which is detachably mounted on the bottom of the impurity removal barrel; A filter plate, the filter plate is detachably mounted on the unloading frame, and the filter plate is in sliding contact with the spiral scraper; An installation frame, the installation frame is fixedly installed at the bottom of the unloading rack; A collection box, the collection box is detachably mounted on the bottom of the installation frame; A material baffle plate, the material baffle plate is fixedly installed inside the installation frame; An air inlet pipe, the air inlet pipe being connected between the mounting frame and the filter; a blower, wherein an input end of the blower is connected to an output end of the filter; A separation part is installed on the impurity removal cylinder and is used to separate plastic particles from impurities.

[0009] On the basis of the above scheme, the separation unit comprises: Air inlet slots, two of which are symmetrically arranged on the upper side of the interior of the impurity removal cylinder; A plurality of the nozzles are fixedly mounted on the two air inlet slots at equal distances; An exhaust pipe, the exhaust pipe is fixedly mounted on the inner top wall of the carrier, and the exhaust pipe is respectively connected to the plurality of nozzles; An exhaust pipe is connected between the output end of the blower and the exhaust pipe.

[0010] On the basis of the above scheme, the feeding assembly comprises: A feeding cylinder, the feeding cylinder is fixedly mounted on the supporting frame, the discharge end of the feeding cylinder is connected with the upper part of the feed end of the impurity removal cylinder, and the feeding cylinder is fixedly mounted at the lower end of the feed hopper; A feeding shaft, the feeding shaft being rotatably mounted inside the feeding barrel; A first spiral blade, the feeding shaft is fixedly mounted with the first spiral blade, and the first spiral blade is in sliding contact with the inner wall of the feeding barrel; A driving frame, the driving frame is mounted on the feeding cylinder; A driving unit is installed on the driving frame and is used to drive the transmission shaft to rotate.

[0011] On the basis of the above scheme, the driving unit comprises: A driving gear, the driving gear is rotatably mounted on the driving frame, and the driving gear is fixedly connected to the feeding shaft; A driving shaft, the driving shaft is rotatably mounted on the driving frame, and one end of the driving shaft is fixedly connected to the transmission shaft; A driven gear, the driven gear is rotatably mounted on the driving frame, and the driven gear is fixedly connected to the driving shaft; An intermediate gear, the intermediate gear being rotatably mounted on the driving frame, and the intermediate gear being meshed with the driving gear and the driven gear respectively; A first motor is fixedly mounted on the driving frame, and an output end of the first motor is fixedly connected to the driving gear.

[0012] On the basis of the above scheme, the discharge assembly comprises: A discharge cylinder, the discharge cylinder is fixedly mounted on the carrier frame, and the feed end of the discharge cylinder is connected to the lower part of the discharge end of the impurity removal cylinder; A discharge shaft, the discharge shaft being rotatably mounted inside the discharge barrel; A second spiral blade, the discharge shaft is fixedly mounted with the second spiral blade, and the second spiral blade is in sliding contact with the inner wall of the discharge barrel; A loading barrel, the loading barrel is fixedly mounted on the side of the sorting box, the feeding end of the loading barrel is connected with the discharging end of the discharging barrel, and the discharging end of the loading barrel is connected with the discharging hopper; A feeding shaft, the feeding shaft being rotatably mounted inside the feeding barrel; A third spiral blade, the feeding shaft is fixedly mounted with the third spiral blade, and the third spiral blade is in sliding contact with the inner wall of the feeding barrel; A second motor, the second motor is fixedly mounted on the top of the feeding barrel, and an output end of the second motor is fixedly connected to the feeding shaft; An electrostatic generating unit, which is installed on the feeding barrel and is used to charge the plastic particles with static electricity; The transmission part is installed at the bottom of the upper barrel and is used for transmission.

[0013] On the basis of the above scheme, the static electricity generating unit comprises: A conductive plate, the conductive plate is fixedly mounted on the loading barrel, and the conductive plate is in sliding contact with the third spiral blade; An electrostatic generator is fixedly mounted on the loading barrel and is electrically connected to the conductive plate.

[0014] On the basis of the above scheme, the transmission part includes: A transmission frame, the transmission frame is fixedly mounted on the bottom of the loading barrel; A first bevel gear, the first bevel gear is rotatably mounted on the transmission frame, and the first bevel gear is fixedly connected to the feeding shaft; a second helical gear, the second helical gear being rotatably mounted on the transmission frame and meshing with the first helical gear; A driving pulley, the driving pulley is actively mounted on the transmission frame, and the driving pulley is fixedly connected to the second bevel gear; A driven pulley, the driven pulley is fixedly mounted on the discharge shaft; The transmission belt drives the tensioning sleeve between the driving pulley and the driven pulley to be provided with the transmission belt.

[0015] On the basis of the above scheme, the sorting and recycling component includes: A material guide frame, the material guide frame is fixedly installed inside the sorting box, the material guide frame is located at the bottom of the discharge end of the discharge hopper, and two sides of the material guide frame are set as inclined surfaces; Raised strips, the raised strips are fixedly installed at equal distances on both sides of the material guide frame; An electrode plate, the electrode plate is symmetrically and fixedly installed inside the sorting box, and the electrode plate is arranged parallel to the inclined surface of the guide frame; A material discharge box, the material discharge box is fixedly mounted on the inner bottom wall of the sorting box, and the material discharge box is located at the bottom of the material guide rack; A material distribution box, wherein the material distribution boxes are fixedly installed on both sides of the discharge box; The lower hopper is fixedly installed on the discharge end of the discharge box and the distribution box.

[0016] The working principle and beneficial effects of the present invention are: 1. In the present invention, the transmission shaft drives the spiral scraper to rotate with the impact plate with the transmission shaft as the axis, thereby driving the waste plastic particles to continuously roll in the impurity removal barrel, so that the impurities attached to the plastic particles are vibrated off through the collision between the plastic particles. The setting of the impact plate improves the efficiency of removing impurities on the plastic particles, and has the effect of uniforming the average particle size of the plastic particles, thereby improving the cleaning efficiency.

[0017] 2. In the present invention, during the process of removing impurities from the plastic particles, the impurities that fall off the plastic particles will fall into the bottom of the impurity removal cylinder, and the blower draws air in the air inlet pipe through the filter, so that the fallen impurities pass through the filter plate, enter the installation frame, and finally fall into the collection box for collection. By setting the baffle plate, the probability of impurities entering the air inlet pipe can be reduced, the damage to the filter can be reduced, the possibility of impurities entering the sorting box can be reduced, and the recovery of impurities can also reduce pollution to the external environment.

[0018] 3. In the present invention, the blower exhausts air into the exhaust pipe through the exhaust pipe. At this time, the nozzle is turned on to spray air into the air inlet slot through the nozzle and finally enter the impurity removal cylinder. The ejected airflow will act on the plastic particles to assist in the stirring of the plastic particles, thereby improving the efficiency of removing impurities on the plastic particles, and air-drying the plastic particles to reduce the water content on the surface of the plastic particles and improve the sorting effect of the plastic particles.

[0019] 4. In the present invention, the plastic particles entering the sorting box first contact the guide rack and roll down from the inclined surfaces on both sides of the guide rack. By cooperating with the convex strips, the plastic particles stay in the magnetic field area of ​​the electrode plate for a longer time, thereby improving the accuracy of sorting. The plastic particles attracted by the electrode plate will fall into the sorting box, and then be discharged through the lower hopper and collected.

[0020] 5. In the present invention, through the cooperation of the impurity removal component and the impurity collection component, the impurities attached to the plastic particles can be quickly cleaned, thereby making the average particle size of the plastic particles uniform, improving the sorting effect, and the impurities can be recovered. Through the cooperation of the feeding component, the impurity removal components can be operated synchronously, improving the synchronization of operation, making the process of removing impurities from plastic particles more stable, and through the setting of the sorting and recycling components, the efficiency and accuracy of sorting and recycling are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of a three-dimensional structure in cross section in the present invention; Figure 3 It is a schematic diagram of the overall structure from another angle in the present invention; Figure 4 It is a schematic diagram of the overall structure from another angle in the present invention; Figure 5 It is a cross-sectional structural schematic diagram of the impurity removal component, the impurity collection component and the feeding component in the present invention; Figure 6 It is a schematic cross-sectional structural diagram of the impurity collection component in the present invention; Figure 7 It is a cross-sectional structural schematic diagram of the cooperation of the impurity removal component, the feeding component and the discharge component in the present invention; Figure 8 It is a cross-sectional structural schematic diagram of the cooperation between the feeding assembly and the driving part in the present invention; Fig. 9 It is a cross-sectional structural schematic diagram of the coordination between the discharge assembly and the electrostatic generating part in the present invention; Fig.10 It is a cross-sectional structural schematic diagram of the transmission part in the present invention; Fig.11 It is a schematic cross-sectional structural diagram of the sorting and recycling component in the present invention.

[0023] The numbers in the figure represent: 1, carrier frame; 2, sorting box; 3, feed hopper; 4, discharge hopper; 5, impurity removal barrel; 6, transmission shaft; 7, spiral scraper; 8, impact plate; 9, filter; 10, unloading rack; 11, filter plate; 12, installation frame; 13, collection box; 14, baffle plate; 15, air inlet pipe; 16, blower; 17, air inlet slot; 18, jet head; 19, exhaust pipe; 20, exhaust pipe; 21, feed barrel; 22, feed shaft; 23, first spiral blade; 24, drive frame; 25, driving gear; 26, drive shaft; 27, driven gear; 28, intermediate gear; 29, first motor; 30, discharge barrel; 31, discharge shaft; 32, second spiral blade; 33, loading barrel; 34, loading shaft; 35, third spiral blade; 36, second motor; 37, conductive plate; 38, electrostatic generator; 39, transmission frame; 40, first bevel gear; 41, second bevel gear; 42, driving pulley; 43, driven pulley; 44, transmission belt; 45, material guide frame; 46, convex strip; 47, electrode plate; 48, discharge box; 49, distribution box; 50, lower hopper. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figures 1 to 11 As shown, this embodiment proposes an electrostatic sorting and recovery device for waste plastic particles, including a carrier frame 1, a sorting box 2 is fixedly installed on the top of the carrier frame 1, and also includes a dust removal component, an impurity collection component, a feed hopper 3, a feeding component, a discharge hopper 4, a discharge component and a sorting and recovery component. The dust removal component is installed inside the carrier frame 1, and is used to process impurities attached to the plastic particles to be sorted. The dust removal component includes a dust removal barrel 5, a transmission shaft 6, a spiral scraper 7 and an impact plate 8. The dust removal barrel 5 is fixedly installed inside the carrier frame 1, and the transmission shaft 6 is rotatably installed inside the dust removal barrel 5. The spiral scraper 7 is fixedly installed on the transmission shaft 6, and the spiral scraper 7 is slidably abutted against the inner wall of the dust removal barrel 5. A plurality of impact plates 8 are fixedly installed on the transmission shaft 6 at equal distances.

[0026] Specifically, when the waste plastic particles are sorted and recycled, the collected waste plastic particles are first poured into the feed hopper 3, and the feeding component is started to discharge the plastic particles entering the feed hopper 3 into the impurity removal barrel 5. At this time, with the action of the feeding component, the transmission shaft 6 is driven to rotate synchronously, thereby driving the spiral scraper 7 to rotate with the impact plate 8 with the transmission shaft 6 as the axis, thereby driving the waste plastic particles to continuously roll in the impurity removal barrel 5, thereby vibrating the impurities attached to the plastic particles through the collision between the plastic particles. The setting of the impact plate 8 improves the efficiency of removing impurities on the plastic particles. At this time, the setting of the impurity collection component is started to collect the cleaned impurities, and at the same time, the rolling speed of the plastic particles in the impurity removal barrel 5 is improved. With the continuous rotation of the transmission shaft 6, the spiral scraper 7 transports the impurity-removed plastic particles to the position of the discharge component. At this time, the discharge component is started to feed the plastic particles into the discharge hopper 4, and finally into the inside of the sorting box 2. The sorting and recycling component is started, and different types of plastic particles in the plastic particles can be sorted and recycled.

[0027] like Figure 5 , Figure 6 As shown, the impurity collecting component is installed on the impurity removing component, and is used to collect impurity particles during the impurity removing process. The impurity collecting component includes a filter 9, which is fixedly installed on the supporting frame 1, and also includes a feed rack 10, a filter plate 11, a mounting frame 12, a collection box 13, a baffle plate 14, an air inlet pipe 15, a blower 16 and a separation part. The feed rack 10 is detachably installed at the bottom of the impurity removing barrel 5. The filter plate 11 is detachably installed on the feed rack 10, and the filter plate 11 is slidably abutted against the spiral scraper 7. The mounting frame 12 is fixedly installed at the bottom of the feed rack 10, the collection box 13 is detachably installed at the bottom of the mounting frame 12, the baffle plate 14 is fixedly installed inside the mounting frame 12, the air inlet pipe 15 is connected between the mounting frame 12 and the filter 9, the input end of the blower 16 is connected to the output end of the filter 9, and the separation part is installed on the impurity removing barrel 5, and is used to separate plastic particles from impurities.

[0028] Specifically, as the transmission shaft 6 rotates, the plastic particles entering the impurity removal barrel 5 are removed by the spiral scraper 7 and the impact plate 8, and the impurities that fall off the plastic particles will fall into the bottom of the impurity removal barrel 5. At this time, the blower 16 is started, and the blower 16 draws air in the air inlet pipe 15 through the filter 9, thereby drawing air in the installation frame 12 through the air inlet pipe 15, so that the fallen impurities pass through the filter plate 11, enter the installation frame 12, and finally fall into the collection box 13 for collection. By setting the baffle plate 14, the probability of impurities entering the air inlet pipe 15 can be reduced, and the damage to the filter 9 can be reduced. At the same time, by setting the separation part, the plastic particles in the impurity removal barrel 5 can be stirred in the process of collecting the fallen impurities, thereby improving the efficiency of removing impurities on the plastic particles and making the plastic particles easier to be sorted.

[0029] The above, such as Figure 6 As shown, the separation part includes an air inlet groove 17, an air jet head 18, an exhaust pipe 19 and an exhaust pipe 20. Two air inlet grooves 17 are symmetrically opened on the upper side of the interior of the impurity removal barrel 5. A plurality of air jet heads 18 are fixedly installed on the two air inlet grooves 17 at equal distances. The exhaust pipe 19 is fixedly installed on the inner top wall of the supporting frame 1. The exhaust pipe 19 is respectively connected to the plurality of air jet heads 18. The exhaust pipe 20 is connected between the output end of the blower 16 and the exhaust pipe 19.

[0030] Specifically, as the blower 16 continues to run, the blower 16 exhausts air into the exhaust pipe 19 through the exhaust pipe 20. At this time, the nozzle 18 is turned on, so that the air is sprayed into the air inlet slot 17 through the nozzle 18 and finally enters the impurity removal cylinder 5. The ejected airflow will act on the plastic particles, assisting the stirring of the plastic particles, thereby improving the efficiency of removing impurities on the plastic particles.

[0031] It should be added that if the surface of the plastic particles to be sorted is wet, the plastic particles are prone to absorb static electricity, making it difficult for the sorting system to accurately identify and classify the particles, resulting in reduced sorting effect. In addition, wet plastic particles are more likely to adhere to the inside of the equipment, increasing the sorting error and affecting the normal operation of the sorting. The ejected airflow can not only assist in the stirring of the plastic particles, making it easier to remove impurities on the plastic particles, but also air-dry the wet plastic particles, thereby improving the accuracy of sorting.

[0032] like Figure 7 , Figure 8 As shown, the feed hopper 3 is fixedly mounted on the carrier frame 1, and the feeding assembly is mounted at the feeding end of the carrier frame 1, and is used to convey the plastic particles to be sorted into the impurity removal assembly. The feeding assembly includes a feeding barrel 21, a feeding shaft 22, a first spiral blade 23, a driving frame 24 and a driving part. The feeding barrel 21 is fixedly mounted on the carrier frame 1, and the discharge end of the feeding barrel 21 is connected to the upper part of the feeding end of the impurity removal barrel 5. The feeding barrel 21 is fixedly mounted on the lower end of the feed hopper 3, and the feeding shaft 22 is rotatably mounted inside the feeding barrel 21. The first spiral blade 23 is fixedly mounted on the feeding shaft 22, and the first spiral blade 23 is slidably abutted against the inner wall of the feeding barrel 21. The driving frame 24 is mounted on the feeding barrel 21, and the driving part is mounted on the driving frame 24, and is used to drive the transmission shaft 6 to rotate.

[0033] Specifically, after the plastic particles enter the feed hopper 3 , the driving unit drives the feed shaft 22 to rotate, and the feed shaft 22 drives the first spiral blade 23 to rotate, so that the plastic particles to be sorted that enter the feed hopper 3 are discharged into the impurity removal barrel 5 .

[0034] The above, such as Figure 8As shown, the driving part includes a driving gear 25, a driving shaft 26, a driven gear 27, an intermediate gear 28 and a first motor 29. The driving gear 25 is rotatably mounted on the driving frame 24, and the driving gear 25 is fixedly connected to the feeding shaft 22. The driving shaft 26 is rotatably mounted on the driving frame 24, and one end of the driving shaft 26 is fixedly connected to the transmission shaft 6. The driven gear 27 is rotatably mounted on the driving frame 24, and the driven gear 27 is fixedly connected to the driving shaft 26. The intermediate gear 28 is rotatably mounted on the driving frame 24, and the intermediate gear 28 is respectively meshed with the driving gear 25 and the driven gear 27. The first motor 29 is fixedly mounted on the driving frame 24, and the output end of the first motor 29 is fixedly connected to the driving gear 25.

[0035] Specifically, the first motor 29 is started, and the first motor 29 drives the driving gear 25 to rotate, the driving gear 25 drives the intermediate gear 28 to rotate, and the intermediate gear 28 drives the driven gear 27 to rotate, thereby driving the driving shaft 26 to rotate, thereby driving the transmission shaft 6 to rotate through the setting of the driving shaft 26, and at the same time, the driving gear 25 synchronously drives the feeding shaft 22 to rotate in the same direction, so that in the process of feeding the plastic particles into the impurity removal barrel 5, the impurity-free plastic particles in the impurity removal barrel 5 are sent out, thereby improving work efficiency.

[0036] like Fig. 9 , Fig.10 As shown, the discharge hopper 4 is fixedly mounted on the top of the sorting box 2, and the discharge assembly is mounted on the carrier 1, which is used to feed the plastic particles after impurities are removed into the discharge hopper 4. The discharge assembly includes a discharge barrel 30, a discharge shaft 31, a second spiral blade 32, a feed barrel 33, a feed shaft 34, a third spiral blade 35, a second motor 36, an electrostatic generating part and a transmission part. The discharge barrel 30 is fixedly mounted on the carrier 1, and the feed end of the discharge barrel 30 is connected to the lower part of the discharge end of the impurity removal barrel 5. The discharge shaft 31 is rotatably mounted inside the discharge barrel 30. The discharge shaft 31 is fixedly mounted with a second spiral blade 32, and the second spiral blade 32 is connected to the discharge barrel 30. The inner wall is in sliding contact, the loading barrel 33 is fixedly installed on the side of the sorting box 2, the feeding end of the loading barrel 33 is connected with the discharging end of the discharging barrel 30, and the discharging end of the loading barrel 33 is connected with the discharging hopper 4. The loading shaft 34 is rotatably installed inside the loading barrel 33, and a third spiral blade 35 is fixedly installed on the loading shaft 34. The third spiral blade 35 is in sliding contact with the inner wall of the loading barrel 33. The second motor 36 is fixedly installed on the top of the loading barrel 33, and the output end of the second motor 36 is fixedly connected to the loading shaft 34. The static electricity generating part is installed on the loading barrel 33 for making the plastic particles have static electricity, and the transmission part is installed at the bottom of the loading barrel 33 for transmission.

[0037] Specifically, with the continuous rotation of the transmission shaft 6, the plastic particles after impurities removal will enter the discharge barrel 30. At this time, the second motor 36 is started, and the second motor 36 drives the loading shaft 34 to rotate, and the loading shaft 34 drives the third spiral blade 35 to rotate. At the same time, through the rotation of the loading shaft 34, under the action of the transmission part, the discharge shaft 31 is driven to rotate synchronously, thereby driving the second spiral blade 32 to rotate, and the plastic particles entering the discharge barrel 30 are discharged into the loading barrel 33. With the rotation of the third spiral blade 35, the plastic particles are sent to the discharge hopper 4. When the plastic particles pass through the loading barrel 33, the static electricity generating part is started to make the plastic particles have static electricity. After the plastic particles with static electricity enter the discharge hopper 4, sorting can begin.

[0038] The above, such as Fig. 9 As shown, the electrostatic generating part includes a conductive plate 37 and an electrostatic generator 38. The conductive plate 37 is fixedly mounted on the upper barrel 33. The conductive plate 37 is in sliding contact with the third spiral blade 35. The electrostatic generator 38 is fixedly mounted on the upper barrel 33. The electrostatic generator 38 is electrically connected to the conductive plate 37.

[0039] Specifically, as the third spiral blade 35 rotates, the plastic particles are driven to move in the loading barrel 33. When the plastic particles come into contact with the conductive plate 37, the static electricity generator 38 is started, and the plastic particles generate static electricity through friction with the conductive plate 37, so that the plastic particles are charged.

[0040] The above, such as Fig.10 As shown, the transmission part includes a transmission frame 39, a first bevel gear 40, a second bevel gear 41, a driving pulley 42, a driven pulley 43 and a transmission belt 44. The transmission frame 39 is fixedly mounted on the bottom of the loading barrel 33, the first bevel gear 40 is rotatably mounted on the transmission frame 39, the first bevel gear 40 is fixedly connected to the loading shaft 34, the second bevel gear 41 is rotatably mounted on the transmission frame 39, the second bevel gear 41 is meshed with the first bevel gear 40, the driving pulley 42 is actively mounted on the transmission frame 39, the driving pulley 42 is fixedly connected to the second bevel gear 41, the driven pulley 43 is fixedly mounted on the discharge shaft 31, and a transmission belt 44 is provided for the tensioning sleeve between the driving pulley 42 and the driven pulley 43.

[0041] Specifically, as the loading shaft 34 rotates, the loading shaft 34 drives the first bevel gear 40 to rotate, the first bevel gear 40 drives the second bevel gear 41 to rotate, the second bevel gear 41 drives the driving pulley 42 to rotate, and the driving pulley 42 drives the driven pulley 43 to rotate through the setting of the transmission belt 44, which can drive the discharge shaft 31 to rotate.

[0042] like Fig.11As shown, the sorting and recycling component is installed inside the sorting box 2 for sorting and recycling plastic particles. The sorting and recycling component includes a guide rack 45, a convex strip 46, an electrode plate 47, a discharge box 48, a sub-box 49 and a lower hopper 50. The guide rack 45 is fixedly installed inside the sorting box 2. The guide rack 45 is located at the bottom of the discharge end of the discharge hopper 4. Both sides of the guide rack 45 are set as inclined surfaces. Both sides of the guide rack 45 are fixedly installed with convex strips 46 at equal distances. The electrode plates 47 are symmetrically and fixedly installed inside the sorting box 2. The electrode plates 47 are arranged parallel to the inclined surfaces of the guide rack 45. The discharge box 48 is fixedly installed on the inner bottom wall of the sorting box 2. The discharge box 48 is located at the bottom of the guide rack 45. Sub-boxes 49 are fixedly installed on both sides of the discharge box 48. The discharge ends of the discharge box 48 and the sub-box 49 are fixedly installed with lower hoppers 50.

[0043] Specifically, after the plastic particles after impurities are removed enter the discharge hopper 4, the plastic particles enter the sorting box 2. At this time, the electrode plate 47 is turned on, and the plastic particles entering the sorting box 2 first contact the guide rack 45, and are diverted into two paths by the guide rack 45, and roll down from the inclined surfaces on both sides of the guide rack 45. Through the cooperation of the inclined surfaces on both sides of the guide rack 45 and the convex strips 46, the plastic particles can stay in the magnetic field area of ​​the electrode plate 47 for a longer time, thereby improving the accuracy of sorting, and the plastic particles attracted by the electrode plate 47 will fall into the sorting box 49, and then be discharged through the lower hopper 50 and collected, while the plastic particles with small charge or no charge will fall into the discharge box 48, and thus be discharged from the lower hopper 50 and collected, and the plastic particles entering the discharge box 48 will be re-sorted.

[0044] To sum up, when sorting and recycling waste plastic particles, the collected waste plastic particles are first poured into the feed hopper 3. At this time, the first motor 29 is started, and the first motor 29 drives the driving gear 25 to rotate, and the driving gear 25 drives the intermediate gear 28 to rotate, and the intermediate gear 28 drives the driven gear 27 to rotate, thereby driving the drive shaft 26 to rotate. At the same time, the driving gear 25 synchronously drives the feed shaft 22 to rotate in the same direction, and the feed shaft 22 drives the first spiral blade 23 to rotate, thereby discharging the plastic particles to be sorted that enter the feed hopper 3 into the impurity removal barrel 5.

[0045] As the drive shaft 26 rotates, the transmission shaft 6 is driven to rotate synchronously, thereby driving the spiral scraper 7 to rotate with the impact plate 8 around the transmission shaft 6 as the axis, thereby driving the waste plastic particles to continuously roll in the impurity removal barrel 5, so that the impurities attached to the plastic particles are vibrated off through the collision between the plastic particles. The setting of the impact plate 8 improves the efficiency of removing impurities on the plastic particles.

[0046] In the process of removing impurities from the plastic particles entering the impurity removal barrel 5, impurities falling off the plastic particles will fall into the bottom of the impurity removal barrel 5. At this time, the blower 16 is started, and the blower 16 draws air in the air inlet pipe 15 through the filter 9, thereby drawing air in the installation frame 12 through the air inlet pipe 15, so that the fallen impurities pass through the filter plate 11, enter the installation frame 12, and finally fall into the collection box 13 for collection. By setting the baffle plate 14, the probability of impurities entering the air inlet pipe 15 can be reduced, and the damage to the filter 9 can be reduced. When the blower 16 is continuously running, the blower 16 exhausts air into the exhaust pipe 19 through the exhaust pipe 20. At this time, the nozzle 18 is turned on, so that the air is sprayed into the air inlet slot 17 through the nozzle 18 and finally enters the impurity removal barrel 5. The ejected airflow will act on the plastic particles, assist in the stirring of the plastic particles, increase the tumbling speed of the plastic particles in the impurity removal barrel 5, thereby improving the efficiency of removing impurities on the plastic particles, and can also air-dry the wet plastic particles, thereby improving the accuracy of sorting and making the plastic particles easier to be sorted.

[0047] As the transmission shaft 6 rotates continuously, the plastic particles after impurities removal will enter the discharge barrel 30. At this time, the second motor 36 is started, and the second motor 36 drives the feeding shaft 34 to rotate, and the feeding shaft 34 drives the third spiral blade 35 to rotate. At the same time, the feeding shaft 34 drives the first bevel gear 40 to rotate, and the first bevel gear 40 drives the second bevel gear 41 to rotate, and the second bevel gear 41 drives the active pulley 42 to rotate. The active pulley 42 drives the driven pulley 43 to rotate through the setting of the transmission belt 44, which can drive the discharge shaft 31 to rotate synchronously, thereby driving the second spiral blade 32 to rotate, and the plastic particles entering the discharge barrel 30 are discharged into the feeding barrel 33. As the third spiral blade 35 rotates, when the plastic particles pass through the feeding barrel 33, when the plastic particles contact the conductive plate 37, the electrostatic generator 38 is started, and the plastic particles generate static electricity through friction with the conductive plate 37, so that the plastic particles are charged.

[0048] As the third conveying blade runs, the plastic particles enter the sorting box 2. At this time, the electrode plate 47 is turned on. The plastic particles entering the sorting box 2 first contact the guide rack 45, and are diverted into two paths by the guide rack 45, and roll down from the inclined surfaces on both sides of the guide rack 45. Through the cooperation of the inclined surfaces on both sides of the guide rack 45 and the convex strips 46, the plastic particles can stay in the magnetic field area of ​​the electrode plate 47 for a longer time, thereby improving the accuracy of sorting. The plastic particles attracted by the electrode plate 47 will fall into the sorting box 49, and then be discharged through the lower hopper 50 and collected. The plastic particles with small charge or no charge will fall into the discharge box 48, and then be discharged from the lower hopper 50 and collected. The plastic particles entering the discharge box 48 will be re-sorted.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrostatic sorting and recycling device for waste plastic particles, comprising a carrier frame (1), a sorting box (2) being fixedly mounted on the top of the carrier frame (1), characterized in that: Also includes: An impurity removal component, which is installed inside the carrier (1) and is used to process impurities attached to the plastic particles to be sorted; An impurity collecting component, which is installed on the impurity removing component and is used to collect impurity particles during the impurity removing process; A feed hopper (3), the feed hopper (3) being fixedly mounted on the supporting frame (1); A feeding assembly, the feeding assembly being mounted on the feeding end of the carrier (1) and being used for conveying plastic particles to be sorted into the impurity removal assembly; A discharge hopper (4), the discharge hopper (4) being fixedly mounted on the top of the sorting box (2); A discharge assembly, the discharge assembly being mounted on the carrier frame (1) and being used to deliver the plastic particles after impurities have been removed into the discharge hopper (4); A sorting and recycling component is installed inside the sorting box (2) and is used for sorting and recycling plastic particles.

2. The electrostatic separation and recovery device for waste plastic particles according to claim 1 is characterized in that: The impurity removal component comprises: A debris removal barrel (5), the debris removal barrel (5) being fixedly mounted inside the supporting frame (1); A transmission shaft (6), the transmission shaft (6) being rotatably mounted inside the impurity removal barrel (5); A spiral scraper (7), the spiral scraper (7) being fixedly mounted on the transmission shaft (6), the spiral scraper (7) being in sliding contact with the inner wall of the impurity removal barrel (5); Impact plates (8), a plurality of impact plates (8) are fixedly mounted on the transmission shaft (6) at equal distances.

3. The electrostatic separation and recovery device for waste plastic particles according to claim 2, wherein the impurity collection component comprises a filter (9), and the filter (9) is fixedly mounted on the support frame (1), characterized in that: Also includes: A material unloading rack (10), the material unloading rack (10) being detachably mounted on the bottom of the impurity removal barrel (5); A filter plate (11), the filter plate (11) being detachably mounted on the unloading frame (10), the filter plate (11) being in sliding contact with the spiral scraper (7); An installation frame (12), the installation frame (12) being fixedly installed at the bottom of the unloading rack (10); A collection box (13), the collection box (13) being detachably mounted on the bottom of the mounting frame (12); a material baffle plate (14), the material baffle plate (14) being fixedly mounted inside the mounting frame (12); An air inlet pipe (15), the air inlet pipe (15) being connected between the mounting frame (12) and the filter (9); a blower (16), wherein an input end of the blower (16) is connected to an output end of the filter (9); A separation part, the separation part is installed on the impurity removal barrel (5) and is used to separate the plastic particles from impurities.

4. The electrostatic separation and recovery device for waste plastic particles according to claim 3 is characterized in that: The separation unit comprises: An air inlet groove (17), two of which are symmetrically provided on the upper side of the interior of the impurity removal cylinder (5); An air jet head (18), wherein a plurality of the air jet heads (18) are fixedly mounted at equal distances on the two air inlet slots (17); An exhaust pipe (19), the exhaust pipe (19) being fixedly mounted on the inner top wall of the carrier frame (1), the exhaust pipe (19) being respectively connected to the plurality of nozzles (18); An exhaust pipe (20), the exhaust pipe (20) being connected between an output end of the blower (16) and the exhaust pipe (19).

5. The electrostatic separation and recovery device for waste plastic particles according to claim 4 is characterized in that: The feeding assembly comprises: A feeding cylinder (21), the feeding cylinder (21) being fixedly mounted on the supporting frame (1), the discharge end of the feeding cylinder (21) being connected to the upper part of the feed end of the impurity removal cylinder (5), and the feeding cylinder (21) being fixedly mounted at the lower end of the feed hopper (3); A feeding shaft (22), the feeding shaft (22) being rotatably mounted inside the feeding barrel (21); a first spiral blade (23), the first spiral blade (23) being fixedly mounted on the feeding shaft (22), the first spiral blade (23) being in sliding contact with the inner wall of the feeding cylinder (21); A driving frame (24), the driving frame (24) being mounted on the feeding cylinder (21); A driving unit, the driving unit is mounted on the driving frame (24) and is used to drive the transmission shaft (6) to rotate.

6. The electrostatic separation and recovery device for waste plastic particles according to claim 5 is characterized in that: The driving unit comprises: A driving gear (25), the driving gear (25) being rotatably mounted on the driving frame (24), and the driving gear (25) being fixedly connected to the feeding shaft (22); A drive shaft (26), the drive shaft (26) being rotatably mounted on the drive frame (24), and one end of the drive shaft (26) being fixedly connected to the transmission shaft (6); A driven gear (27), the driven gear (27) being rotatably mounted on the driving frame (24), and the driven gear (27) being fixedly connected to the driving shaft (26); An intermediate gear (28), the intermediate gear (28) being rotatably mounted on the driving frame (24), the intermediate gear (28) being meshed with the driving gear (25) and the driven gear (27) respectively; A first motor (29), wherein the first motor (29) is fixedly mounted on the driving frame (24), and an output end of the first motor (29) is fixedly connected to the driving gear (25).

7. The electrostatic separation and recovery device for waste plastic particles according to claim 6 is characterized in that: The discharge assembly comprises: A discharge barrel (30), the discharge barrel (30) being fixedly mounted on the support frame (1), the feed end of the discharge barrel (30) being in communication with the lower portion of the discharge end of the impurity removal barrel (5); A discharge shaft (31), the discharge shaft (31) being rotatably mounted inside the discharge barrel (30); a second spiral blade (32), the second spiral blade (32) being fixedly mounted on the discharge shaft (31), the second spiral blade (32) being in sliding contact with the inner wall of the discharge cylinder (30); A loading cylinder (33), the loading cylinder (33) being fixedly mounted on the side of the sorting box (2), the feeding end of the loading cylinder (33) being connected to the discharging end of the discharging cylinder (30), and the discharging end of the loading cylinder (33) being connected to the discharging hopper (4); A loading shaft (34), the loading shaft (34) being rotatably mounted inside the loading barrel (33); A third spiral blade (35), the third spiral blade (35) being fixedly mounted on the feeding shaft (34), the third spiral blade (35) being in sliding contact with the inner wall of the feeding barrel (33); A second motor (36), the second motor (36) being fixedly mounted on the top of the loading barrel (33), and the output end of the second motor (36) being fixedly connected to the loading shaft (34); An electrostatic generating unit, the electrostatic generating unit being mounted on the loading barrel (33) and used for causing the plastic particles to be charged with static electricity; A transmission part, the transmission part is installed at the bottom of the upper barrel (33) and is used for transmission.

8. The electrostatic separation and recovery device for waste plastic particles according to claim 7 is characterized in that: The static electricity generating unit comprises: A conductive plate (37), the conductive plate (37) being fixedly mounted on the loading barrel (33), the conductive plate (37) being in sliding contact with the third spiral blade (35); An electrostatic generator (38), wherein the electrostatic generator (38) is fixedly mounted on the loading barrel (33), and the electrostatic generator (38) is electrically connected to the conductive plate (37).

9. The electrostatic separation and recovery device for waste plastic particles according to claim 8, characterized in that: The transmission part comprises: A transmission frame (39), the transmission frame (39) being fixedly mounted on the bottom of the loading barrel (33); a first bevel gear (40), the first bevel gear (40) being rotatably mounted on the transmission frame (39), the first bevel gear (40) being fixedly connected to the feeding shaft (34); a second bevel gear (41), the second bevel gear (41) being rotatably mounted on the transmission frame (39), the second bevel gear (41) being meshed with the first bevel gear (40); A driving pulley (42), the driving pulley (42) being actively mounted on the transmission frame (39), and the driving pulley (42) being fixedly connected to the second bevel gear (41); A driven pulley (43), wherein the driven pulley (43) is fixedly mounted on the discharge shaft (31); The transmission belt (44) drives the tension sleeve between the driving pulley (42) and the driven pulley (43) to be provided with the transmission belt (44).

10. The electrostatic separation and recovery device for waste plastic particles according to claim 9, characterized in that: The sorting and recycling component comprises: A material guide frame (45), the material guide frame (45) is fixedly installed inside the sorting box (2), the material guide frame (45) is located at the bottom of the discharge end of the discharge hopper (4), and two sides of the material guide frame (45) are arranged as inclined surfaces; Raised strips (46), the raised strips (46) being fixedly mounted at equal distances on both sides of the material guide frame (45); an electrode plate (47), the electrode plate (47) being symmetrically and fixedly mounted inside the sorting box (2), the electrode plate (47) being arranged parallel to the inclined surface of the material guide frame (45); A material discharge box (48), the material discharge box (48) being fixedly mounted on the inner bottom wall of the sorting box (2), the material discharge box (48) being located at the bottom of the material guide rack (45); A material distribution box (49), the material distribution box (49) being fixedly mounted on both sides of the material discharge box (48); A lower hopper (50) is fixedly mounted on the discharge ends of the discharge box (48) and the distribution box (49).

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