Waste circuit board plastic electrostatic sorting device

Abstract

The invention relates to the technical field of waste circuit board resource recycling, and discloses a waste circuit board plastic electrostatic separation device which comprises a base, a cylinder is fixedly connected to the top of the base, a roller is installed in the cylinder, a screen frame is installed in the roller, two flat plates are arranged in the roller, and the two flat plates are fixedly connected to the top of the base. The waste circuit board plastic electrostatic sorting device further comprises two fans. According to the waste circuit board plastic electrostatic sorting device, the raising mechanism drives the roller to rotate, so that plastic rubs, collides and shakes off dust, the dust is taken away by a fan wind path, the conveying mechanism is linked to enable the screen frame to vertically receive materials, the materials are conveyed to a sorting area after the wind path contact time is prolonged, and the slapping mechanism drives a flat plate to deflect repeatedly, collides with the plastic and shakes off surface dust; the screening mechanism enables the screen frame to vibrate left and right, plastic is promoted to move forwards and shake dust, all the mechanisms are linked to reduce energy consumption, all links are efficiently linked, and the cleanliness and sorting quality of the plastic are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste circuit board resource recovery, in particular to a waste circuit board plastic electrostatic separation device. Background Art

[0002] With the rapid growth of electronic waste, the recycling of waste circuit boards (PCBs) has become a key link in resource recycling. Circuit boards contain a large amount of plastic components, but because they are often mixed with impurities such as metal residues, dust, and fibers, and the plastic surface easily absorbs moisture and pollutants, traditional sorting methods are inefficient and difficult to meet high-purity recycling needs.

[0003] Since a large amount of powdery impurities will inevitably be produced during the recycling and crushing process of plastic plates, these powdery impurities will be mixed in the plastic fragments, making the plastic fragments that originally need to be sorted by electrostatic separation more complicated and chaotic. In addition, the plastic fragments themselves may also absorb a large amount of dust particles during the recycling and storage process, further increasing the internal impurity content and making sorting more difficult. More importantly, these dust particles adsorbed on the plastic surface will have a significant interference effect on its charging ability. Specifically, dust may neutralize the original charge on the plastic surface, or cover up the differences in charging characteristics between different types of plastics. In this case, the sorting device will not be able to accurately distinguish and identify different types of plastics during operation, which will ultimately lead to a reduction in the purity of the sorted plastics, affecting the recycling effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology has the disadvantage that plastic absorbs dust and affects the sorting quality. For this reason, we propose an electrostatic sorting device for waste circuit board plastics.

[0005] To achieve the above objectives, the present application adopts the following technical solution: a waste circuit board plastic electrostatic separation device, comprising a base, a cylinder fixedly connected to the top of the base, a roller installed inside the cylinder, a screen frame installed inside the drum, two flat plates arranged inside the drum, and the waste circuit board plastic electrostatic separation device also comprising two fans;

[0006] The cylinder is provided with a lifting mechanism inside, which drives the drum to rotate to cause the plastics to rub against each other, and drives the plastics to move up and then fall down to cause collision and shake off dust, and then the fan forms an air path to remove the dust adsorbed in the plastics;

[0007] The conveying mechanism is connected to the lifting mechanism in a transmission manner so that the screen frame moves up and down repeatedly to receive the material, and moves up and down so that the material contacts the air path, and finally conveys the plastic to the sorting area;

[0008] A slapping mechanism, the slapping mechanism is in transmission connection with the lifting mechanism, so that the plate is repeatedly deflected to contact the falling plastic, and the impact force generated by the collision of the plastic shakes off the dust on the surface of the material;

[0009] The screening mechanism is connected to the conveying mechanism in a transmission manner so that the screen frame moves left and right and repeatedly vibrates itself, thereby causing the plastic in the screen frame to gradually move forward and shake out dust.

[0010] Preferably, the raising mechanism comprises:

[0011] The rear cover and the front cover, the rear cover is fixedly connected to one end of the cylinder, the front cover is fixedly connected to the other end of the cylinder, the bottom of the rear cover is fixedly connected to the motor, the output end of the motor is fixedly connected to the first gear, the top of the first gear is meshed with the outer side of the drum, a heating device is installed on one side of the fan at the left end, a dust collection device is installed on one side of the fan at the right end, and a partition is fixedly connected to the top of the inner wall of the drum.

[0012] Preferably, the conveying mechanism includes:

[0013] The middle shaft plate is fixedly connected to the middle part of one side of the drum, the middle part of the middle shaft plate is rotatably connected to a large gear, one end of the large gear is fixedly connected to the rear cover, one side of the large gear is fixedly connected to a slot plate, the surface of the middle shaft plate is rotatably connected to the second gear through a rotating shaft, the bottom of the middle shaft plate is rotatably connected to the third gear through a rotating shaft, the surface of the third gear is fixedly connected to an L-shaped connecting rod, the bottom of the L-shaped connecting rod is slidably connected to the inner wall of the slot plate, a slot hole is opened on one side of the cylinder, the bottom of the L-shaped connecting rod is slidably connected to the inner wall of the slot hole, the surface of the front cover is fixedly connected to a material guide frame, the bottom of the front cover is fixedly connected to a blanking plate, the front end of the base is installed with a sorting device body, and the bottom of the sorting device body is provided with a material dividing frame.

[0014] Preferably, the slapping mechanism includes:

[0015] A toothed circular plate, the toothed circular plate is fixedly connected to the front end of the drum, and both sides of the front cover are rotatably connected to the fourth gear through a rotating shaft, the fourth gear is meshed with the inner diameter of the toothed circular plate, and one side of the fourth gear is rotatably connected to a straight rod through a rotating shaft, the bottom of the straight rod is rotatably connected to one end of the flat plate through a rotating shaft, one end of the bottom of the flat plate is rotatably connected to the front cover through a rotating shaft, and the other end of the flat plate is rotatably connected to both sides of the large gear through a rotating shaft.

[0016] Preferably, the screening mechanism includes:

[0017] There are two raised rods, which are fixedly connected to both sides of one end of the screen frame. Both sides of the groove plate are fixedly connected to the limit frame. The inner wall structure of the limit frame is wavy. The raised rods are slidably connected to the inner wall of the limit frame. The surface of the screen frame has several holes.

[0018] Preferably, a collection box is slidably connected to the interior of the base, cleaning brushes are fixedly connected to both sides of the rear cover, and the other end of the cleaning brush is fixedly connected to both sides of the front cover.

[0019] Preferably, the top of the straight rod is installed at the eccentric shaft position of the fourth gear.

[0020] Preferably, the bottom of the inner wall of the screen frame is inclined, and the bottom of the inner wall of the screen frame gradually inclines downward from the back to the front.

[0021] Technical effects and advantages of the present invention:

[0022] In the present invention, the lifting mechanism causes the plastics to rub against each other, move upward, and then fall and collide through the rotation of the drum, thereby initially shaking off the dust; the slapping mechanism drives the flat plate to deflect repeatedly, colliding with the falling plastic, and using the impact force to shake off the surface dust; the screening mechanism allows the screen frame to vibrate left and right, causing the plastic to move forward and shake out impurities. At the same time, the fan forms an air path to take away the lifted and shaken dust in time. The synergistic effect of multiple mechanisms can effectively remove stubborn dust adsorbed on the plastic surface and internal mixed impurities, greatly improving the cleanliness of the plastic and providing a good foundation for subsequent electrostatic sorting.

[0023] In the present invention, mixed dust in the gaps between plastics can be removed through friction and collision, particles stubbornly adsorbed on the surface can be peeled off by impact and vibration screening can separate fine powder embedded in the plastic pile. After synergistic action, the removal rate of impurities such as dust and fibers on the surface and inside of the plastic is significantly improved, avoiding the "cleaning dead corners" caused by traditional single cleaning methods and ensuring that the plastic reaches a high cleanliness state before entering the sorting area.

[0024] In the present invention, after the dust is removed, the charging characteristics of the plastic itself are not disturbed, and the differences in the charging polarity and charge amount of plastics and metals of different materials are clearly distinguishable. The sorting device body can separate various types of plastics and metals more accurately, greatly improving the sorting purity. At the same time, the automated linkage cleaning and conveying process shortens the processing cycle, reduces material loss, and significantly improves the overall sorting efficiency compared to traditional equipment, making it more suitable for large-scale recycling needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 It is a cross-sectional view of the internal structure of the present invention;

[0027] Figure 3 It is a vertical cross-sectional view of the structure of the present invention;

[0028] Figure 4 For the present invention Figure 4 A magnified view of the structure at point A;

[0029] Figure 5 It is an exploded view of the main structure of the present invention;

[0030] Figure 6 An exploded view of the conveying mechanism of the present invention;

[0031] Figure 7 This is a schematic diagram of the position of the slapping mechanism of the present invention;

[0032] Figure 8 It is a schematic diagram of the sieve plate structure of the present invention.

[0033] Legend: 1. Base; 2. Cylinder; 3. Roller; 4. Screen frame; 5. Flat plate; 6. Fan; 7. Rear cover; 8. Front cover; 9. Motor; 10. First gear; 11. Heating device; 12. Dust collecting device; 13. Partition; 14. Middle axis plate; 15. Large gear; 16. Slot plate; 17. Second gear; 18. Third gear; 19. L-shaped connecting rod; 20. Slot hole; 21. Material guide frame; 22. Discharge plate; 23. Sorting device body; 24. Material separation frame; 25. Toothed circular plate; 26. Fourth gear; 27. Straight rod; 28. Raised rod; 29. ​​Limiting frame; 30. Collecting box; 31. Cleaning brush. DETAILED DESCRIPTION

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0035] Reference Figure 1 - Figure 8 As shown, the present invention provides an electrostatic separation device for waste circuit board plastics, comprising a base 1, a cylinder 2 fixedly connected to the top of the base 1, a roller 3 installed inside the cylinder 2, a screen frame 4 installed inside the roller 3, two flat plates 5 provided inside the roller 3, and two fans 6;

[0036] A lifting mechanism is provided inside the cylinder 2;

[0037] The conveying mechanism is transmission-connected with the lifting mechanism;

[0038] A slapping mechanism, which is transmission-connected to the lifting mechanism;

[0039] The screening mechanism is connected with the conveying mechanism through transmission.

[0040] Reference Figure 1 - Figure 8 As shown, in this embodiment: the lifting mechanism includes:

[0041] The rear cover 7 and the front cover 8 are fixedly connected to one end of the cylinder 2, and the front cover 8 is fixedly connected to the other end of the cylinder 2. The bottom of the rear cover 7 is fixedly connected to the motor 9, and the output end of the motor 9 is fixedly connected to the first gear 10. The top of the first gear 10 is meshed with the outer side of the drum 3. A heating device 11 is installed on one side of the left end fan 6, and a dust collecting device 12 is installed on one side of the right end fan 6. The top of the inner wall of the drum 3 is fixedly connected with a partition 13, and is tightly docked with the guide frame 21 through the connection mode of the conveyor belt to ensure that the conveyor belt can smoothly transport the plastic slag in the waste circuit boards to the internal space of the guide frame 21. The bottom of the inner wall of the guide frame 21 is provided with an oblique guide structure, which can make the plastic slag flow naturally along the inclined surface and enter the inside of the drum 3. Subsequently, the staff starts the operation system of the device, drives the first gear 10 to rotate by the operation of the motor 9, and drives the drum 3 to rotate through the meshing transmission of the first gear 10 and the drum 3.

[0042] At this time, the plastic residue is in the internal space of the drum 3. When the drum 3 starts to rotate, the partition 13 installed inside the drum 3 will dig up some of the plastic residue at the bottom of the drum 3 and move it upward. As the partition 13 gradually rotates from the vertical state at the bottom to the inclined state at the top, the plastic residue will fall downward from the top area of ​​the drum 3. In this process, the two fans 6 configured in the device, one as an exhaust fan and the other as a suction fan, play a key role. The left fan 6 is running and cooperates with the heating device 11 to input hot air into the drum 3, while the right fan 6 is running to generate suction into the drum 3. This design allows the wind to continuously flow from left to right in the internal space of the cylinder 2 and the drum 3.

[0043] When the plastic slag is lifted up by the partition 13 and then falls, the plastic slag will be in a scattered state. At this time, the plastic slag will fully contact the center of the flowing wind. When the plastic slag is lifted up, the dust inside it will be scattered, and the plastic slag will no longer be in a piled state, so that the wind path can effectively drive the dust in the plastic slag to gather towards the dust collecting device 12. In this way, the dust and cotton wool mixed in the plastic slag with lighter weight impurities can be discharged through the holes of the drum 3 along the wind path, so that the dust enters the dust collecting device 12 for centralized collection;

[0044] The plastic residue that is lifted up and falls to the bottom will partially enter the screen frame 4 at the center, and then the screen frame 4 will transport the material to the sorting area. Through the continuous rotation of the drum 3, the partition 13 will continuously lift the plastic residue and make it fall, and perform wind dust removal. At the same time, the high temperature generated by the heating device 11 makes the temperature inside the drum 3 tend to be dry, and then the plastic residue inside is dried, so as to prevent the moisture and water carried by the plastic residue itself from affecting the subsequent electrostatic sorting effect.

[0045] This step completes the impurity removal work before the electrostatic sorting of plastic slag, effectively reduces the impurity and dust content in the mixed plastic slag, and avoids the interference of impurities and dust during the subsequent electrostatic adsorption sorting of the plastic, resulting in poor sorting effect. Through this series of treatments, the sorting accuracy and efficiency are significantly improved, and the effective separation of plastic and some impurities is achieved, laying a solid foundation for the subsequent plastic recycling and reuse.

[0046] Reference Figure 1 - Figure 8 As shown, in this embodiment: the conveying mechanism includes:

[0047] The central axis plate 14 is fixedly connected to the middle of one side of the drum 3. The middle part of the central axis plate 14 is rotatably connected to a large gear 15. One end of the large gear 15 is fixedly connected to the rear cover 7. One side of the large gear 15 is fixedly connected to a slot plate 16. The surface of the central axis plate 14 is rotatably connected to a second gear 17 through a rotating shaft. The bottom of the central axis plate 14 is rotatably connected to a third gear 18 through a rotating shaft. The surface of the third gear 18 is fixedly connected to an L-shaped connecting rod 19. The bottom of the L-shaped connecting rod 19 is slidably connected to the inner wall of the slot plate 16. The cylinder 2 A slot 20 is provided on one side of the front cover 8, the bottom of the L-shaped connecting rod 19 is slidably connected to the inner wall of the slot 20, the surface of the front cover 8 is fixedly connected to the guide frame 21, the bottom of the front cover 8 is fixedly connected to the blanking plate 22, the front end of the base 1 is installed with a sorting device body 23, and the bottom of the sorting device body 23 is provided with a sorting frame 24. When the partition 13 is in a rotating state to process the plastic, since the large gear 15 is in a fixed static state, the second gear 17 is tightly meshed with the surface of the large gear 15, and the third gear 18 is in a fixed state with the third gear 18. The surfaces of the two gears 17 are meshed, so that when the drum 3 rotates clockwise, the second gear 17 will revolve along the surface of the large gear 15, and through the meshing action with the large gear 15, it will also rotate clockwise. When the second gear 17 rotates clockwise, it will also drive the third gear 18 to rotate counterclockwise, and the L-shaped connecting rod 19 is fixedly connected to the third gear 18, which makes the L-shaped connecting rod 19 also rotate synchronously. In this process, the middle shaft plate 14 will rotate synchronously with the drum 3. 14 rotates 180 degrees, driving the third gear 18 to rotate while revolving, so that the bottom of the L-shaped connecting rod 19 gradually slides upward along the inside of the groove plate 16 to the top position as it rotates. That is to say, every time the middle axis plate 14 rotates 180 degrees, it drives the bottom of the L-shaped connecting rod 19 to slide along the inner wall of the groove plate 16 once, and then rotates 180 degrees again, which drives the L-shaped connecting rod 19 to slide downward to the initial position, so that every time the drum 3 rotates one circle, the L-shaped connecting rod 19 slides up and down along the inside of the groove plate 16 once.

[0048] When the partition 13 rotates clockwise to the horizontal position to prepare to fall the plastic, the L-shaped connecting rod 19 rises synchronously, driving the screen frame 4 to gradually approach the falling plastic to receive the material, avoiding the plastic splashing due to the distance being too far. Figure 6The position state of the partition 13 is shown in the figure. When the partition 13 is rotated upward to the vertical state, the plastic will be dumped to make it fall. In this process, the L-shaped connecting rod 19 will drive the screen frame 4 to move to the center area of ​​the central axis plate 14, that is, the center of the inside of the drum 3. This makes the screen frame 4 misaligned with the blanking plate 22 when the material initially falls. When the material finishes falling, the screen frame 4 is placed at the center of the drum 3 and is completely misaligned with the blanking plate 22. Afterwards, the rotation of the drum 3 will cause the L-shaped connecting rod 19 to rise along the second half of the track of the slot plate 16, which makes the screen frame 4 able to accommodate The plastic is inside the drum 3 and is blown by the air duct, thereby increasing the contact time between the falling plastic and the air duct and improving the efficiency of the wind in blowing away the dust on the surface of the plastic. In the process of the partition 13 digging up the plastic for the second time and resetting it to the state shown in the figure, the screen frame 4 gradually moves downward, so that the bottom is first docked with the discharge plate 22 to complete an up and down movement reset, and the internal plastic is first output to the discharge plate 22, and the processed plastic is transported to the sorting area for sorting. After that, the partition 13 forms an inclined state again, and the screen frame 4 continues the above operation to undertake and transport the plastic.

[0049] Among them, each time the partition 13 rotates ninety degrees, the screen frame 4 moves half the distance along the track of the slot plate 16, and when the partition 13 rotates one circle, the screen frame 4 slides up and down along the track of the slot plate 16. In the initial rising process of the screen frame 4, it gradually approaches the falling plastic, reducing the plastic splashing caused by the height distance. When the screen frame 4 moves up to the middle area of ​​the slot plate 16, it completes the reception of all the fallen plastics. The upward movement and downward reset of the latter half realize the delayed contact between the plastic and the flowing wind, ensuring that there is enough time for the moist plastic to be dried by the hot air inside the drum 3, and increasing the blowing time of the wind on the plastic, thereby enhancing the wind's effect of removing dust from the plastic surface. When the screen frame 4 is reset to the bottom, the processed plastic is guided to the discharge plate 22 and then falls into the sorting device body 23, and then the plastic and metal foreign matter are sorted by electrostatic adsorption through the sorting device body 23. Afterwards, the plastic and metal foreign matter are sorted into different intervals of the sorting frame 24 for storage.

[0050] Reference Figure 5 and Figure 8 As shown, in this embodiment: the slapping mechanism includes:

[0051] The toothed circular plate 25 is fixedly connected to the front end of the drum 3. Both sides of the front cover 8 are rotatably connected to the fourth gear 26 through a rotating shaft. The fourth gear 26 is meshed with the inner diameter of the toothed circular plate 25. One side of the fourth gear 26 is rotatably connected to a straight rod 27 through a rotating shaft. The bottom of the straight rod 27 is rotatably connected to one end of the flat plate 5 through a rotating shaft. One end of the bottom of the flat plate 5 is rotatably connected to the front cover 8 through a rotating shaft. The other end of the flat plate 5 is rotatably connected to both sides of the large gear 15 through a rotating shaft. The top of the straight rod 27 is installed at the eccentric shaft position of the fourth gear 26. When the plastic scooped up by the partition 13 is transported upward and finally falls, the plastic will first contact the surface of the flat plate 5. Due to the continuous rotation of the drum 3 The fourth gear 26 is connected to the toothed circular plate 25 via a meshing connection mechanism. The fourth gear 26 is also able to rotate continuously. Furthermore, through the installation design of the straight rod 27 and the eccentric shaft of the fourth gear 26, when the fourth gear 26 rotates, the straight rod 27 can effectively pull the plate 5 to perform repeated deflection movements, thereby forming a slapping effect. When plastic falls on the surface of the plate 5, the plate 5 can vibrate the plastic through the slapping action. This vibration can disperse the plastic particles that are adsorbed or accumulated together, and can also shake off the dust on the surface of the plastic. The dust will then be taken away through the air duct system.

[0052] In addition, the flat plates 5 are installed at an angle, and the distance between the two flat plates 5 is slightly larger than the width of the screen frame 4. This design allows the screen frame 4 to move up and down smoothly between the two flat plates 5. At the same time, the inclined flat plates 5 can also effectively guide the fallen plastic to smoothly enter the interior of the screen frame 4 after being hit, thereby playing a diversion role for the falling plastic and significantly improving the collection effect of the screen frame 4 on the fallen plastic. It is worth mentioning that the two flat plates 5 are installed in a mirror-image manner. They run simultaneously on both sides of the top of the drum 3. This design avoids the situation where the plastic is hit by the flat plate 5 on one side and moves to the other side, and finally falls to the bottom of the drum 3, ensuring the stable operation and efficient processing of the entire system.

[0053] Reference Figure 1 、 Figure 4 、 Figure 6 and Figure 8 As shown, in this embodiment: the screening mechanism includes:

[0054] There are two raised rods 28, and they are fixedly connected to both sides of one end of the screen frame 4. Both sides of the slot plate 16 are fixedly connected to the limit frame 29. The inner wall structure of the limit frame 29 is wavy. The raised rod 28 is slidably connected to the inner wall of the limit frame 29. The surface of the screen frame 4 has a number of holes. When the screen frame 4 moves up and down along the trajectory of the slot plate 16, the slot hole 20 is connected to the L-shaped connecting rod 19, so that the screen frame 4 can slide left and right along the inside of the slot hole 20 through the bottom of the L-shaped connecting rod 19. A distance, wherein the structure of the L-shaped connecting rod 19 is L-shaped, and the L-shaped connecting rod 19 is divided into two ends, one end of which is placed inside the slot hole 20 and the other end is rotated by a rotating shaft. The L-shaped connecting rod 19 is connected, which makes it possible for the screen frame 4 to rotate synchronously when the L-shaped connecting rod 19 rotates. In the process of the screen frame 4 moving up and down, the raised rod 28 slides along the inner wall of the limit frame 29. The wavy feature of the inner wall of the limit frame 29 makes it possible for the raised rod 28 to move slightly left and right in the inner wall of the limit frame 29 when sliding along the limit frame 29, thereby driving the screen frame 4 to shake left and right. Through this shaking, the plastic stored in the screen frame 4 can be more evenly distributed inside the screen frame 4, avoiding the problem of plastic accumulation or local excessiveness inside the screen frame 4. This shaking also helps to loosen the plastic in the screen frame 4, reducing the adhesion phenomenon caused by plastic accumulation;

[0055] During the shaking process of the screen frame 4, the plastic particles inside it will continuously collide and rub against the inner wall of the screen frame 4 and each other. This physical action can further promote the shedding of dust and impurities on the surface of the plastic. At the same time, the screen frame 4 can form a vibration screening effect when shaking, and effectively screen and filter the dust impurities adsorbed in the plastic, prompting the dust in the plastic to be discharged for the second time, and then collected by wind flow, further improving the device's dust filtering and removal effect, so as to ensure the cleanliness of the plastic before electrostatic sorting.

[0056] Reference Figure 1 、 Figure 3 、 Figure 5 and Figure 7As shown, in this embodiment: the base 1 is slidably connected to the interior of the collection box 30, and both sides of the rear cover 7 are fixedly connected to the cleaning brush 31, and the other end of the cleaning brush 31 is fixedly connected to both sides of the front cover 8. During the daily use of the device, after the plastic is put into the drum 3, the drum 3 continues to rotate. At this time, when the plastic is not lifted up, the dust inside the drum 3 will fall through the holes in the drum 3 into the gap between the cylinder 2 and the drum 3. The dust is collected by the collection box 30 provided in the bottom area of ​​the cylinder 2. At the same time, the collection box 30 is installed in a drawer-type manner for easy operation. The workers clean up the dust. In addition, during the use of the roller 3, some small plastics and impurities are very likely to clog the holes of the roller 3. The roller 3 is supported and continuously rotates to contact the two cleaning brushes 31, which enables the cleaning brushes 31 to continuously scrub and unclog the holes of the roller 3, effectively avoiding the problem of hole clogging and ensuring the normal operation of the device. In addition, the cleaning brushes 31 are made of wear-resistant material, which enhances the scrubbing effect and prolongs the service life, so as to improve the sorting quality of waste circuit board plastics and provide strong support for the recycling of waste circuit board resources.

[0057] Reference Figure 2 - Figure 8 As shown, in this embodiment: the bottom of the inner wall of the screen frame 4 is inclined, and the bottom of the inner wall of the screen frame 4 gradually tilts downward from the back to the front. When the screen frame 4 continues to vibrate, since the inner wall of the screen frame 4 is inclined, the plastic will gradually move forward along the inclined inner wall of the screen frame 4 as the vibration occurs, which makes the plastic inside the screen frame 4 be transported to the front end along one end of the screen frame 4. When the screen frame 4 is aligned with the blanking plate 22, the plastic will also be discharged from the inside of the screen frame 4 through this vibration and flow to the blanking plate 22.

[0058] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A waste circuit board plastic electrostatic separation device, comprising a base (1), characterized in that: A cylinder (2) is fixedly connected to the top of the base (1), a roller (3) is installed inside the cylinder (2), a screen frame (4) is installed inside the roller (3), two flat plates (5) are provided inside the roller (3), and the waste circuit board plastic electrostatic separation device also includes two fans (6); A lifting mechanism is provided inside the cylinder (2), and the lifting mechanism drives the roller (3) to rotate to cause the plastics to rub against each other, and drives the plastics to move upward and then fall down to cause collision and shake off dust, and then the fan (6) forms an air path to remove the dust adsorbed in the plastics; A conveying mechanism, wherein the conveying mechanism is connected to the lifting mechanism in a transmission manner so that the screen frame (4) moves up and down repeatedly to receive the material, and moves up and down so that the material contacts the air path, and finally conveys the plastic to the sorting area; A slapping mechanism, the slapping mechanism being in transmission connection with the lifting mechanism so that the plate (5) is repeatedly deflected to contact the falling plastic, and the dust on the surface of the material is shaken off by the impact force generated by the collision of the plastic; The screening mechanism is in transmission connection with the conveying mechanism so that the screen frame (4) moves left and right repeatedly to vibrate itself, thereby causing the plastic in the screen frame (4) to gradually move forward and shake out dust.

2. The electrostatic separation device for waste circuit board plastics according to claim 1, characterized in that: The raising mechanism comprises: A rear cover (7) and a front cover (8), wherein the rear cover (7) is fixedly connected to one end of the cylinder (2), and the front cover (8) is fixedly connected to the other end of the cylinder (2). The bottom of the rear cover (7) is fixedly connected to a motor (9), and the output end of the motor (9) is fixedly connected to a first gear (10). The top of the first gear (10) is meshed with the outer side of the drum (3). A heating device (11) is installed on one side of the fan (6) at the left end, and a dust collecting device (12) is installed on one side of the fan (6) at the right end. A partition (13) is fixedly connected to the top of the inner wall of the drum (3).

3. The electrostatic separation device for waste circuit board plastics according to claim 1, characterized in that: The conveying mechanism comprises: A central axis plate (14) is fixedly connected to the middle of one side of the drum (3); the middle of the central axis plate (14) is rotatably connected to a large gear (15); one end of the large gear (15) is fixedly connected to the rear cover (7); one side of the large gear (15) is fixedly connected to a slot plate (16); the surface of the central axis plate (14) is rotatably connected to a second gear (17) via a rotating shaft; the bottom of the central axis plate (14) is rotatably connected to a third gear (18) via a rotating shaft; the surface of the third gear (18) is fixedly connected to the There is an L-shaped connecting rod (19), the bottom of which is slidably connected to the inner wall of the slot plate (16), a slot hole (20) is provided on one side of the cylinder (2), the bottom of which is slidably connected to the inner wall of the slot hole (20), a material guide frame (21) is fixedly connected to the surface of the front cover (8), a material discharge plate (22) is fixedly connected to the bottom of the front cover (8), a sorting device body (23) is installed at the front end of the base (1), and a material separation frame (24) is provided at the bottom of the sorting device body (23).

4. The electrostatic separation device for waste circuit board plastics according to claim 2, characterized in that: The slapping mechanism comprises: A toothed circular plate (25) is fixedly connected to the front end of the drum (3); both sides of the front cover (8) are rotatably connected to a fourth gear (26) via a rotating shaft; the fourth gear (26) is meshed and connected to the inner diameter of the toothed circular plate (25); one side of the fourth gear (26) is rotatably connected to a straight rod (27) via a rotating shaft; the bottom of the straight rod (27) is rotatably connected to one end of the flat plate (5) via a rotating shaft; one end of the bottom of the flat plate (5) is rotatably connected to the front cover (8) via a rotating shaft; and the other end of the flat plate (5) is rotatably connected to both sides of the large gear (15) via a rotating shaft.

5. The electrostatic separation device for waste circuit board plastics according to claim 1, characterized in that: The screening mechanism comprises: There are two raised rods (28), which are fixedly connected to both sides of one end of the screen frame (4). Both sides of the groove plate (16) are fixedly connected to the limit frame (29). The inner wall structure of the limit frame (29) is wavy. The raised rods (28) are slidably connected to the inner wall of the limit frame (29). The surface of the screen frame (4) has a plurality of holes.

6. The electrostatic separation device for waste circuit board plastics according to claim 2, characterized in that: The base (1) is internally slidably connected to a collecting box (30), both sides of the rear cover (7) are fixedly connected to cleaning brushes (31), and the other end of the cleaning brush (31) is fixedly connected to both sides of the front cover (8).

7. The electrostatic separation device for waste circuit board plastics according to claim 4, characterized in that: The top of the straight rod (27) is mounted on the eccentric shaft of the fourth gear (26).

8. The electrostatic separation device for waste circuit board plastics according to claim 1, characterized in that: The bottom of the inner wall of the screen frame (4) is inclined, and the bottom of the inner wall of the screen frame (4) gradually inclines downward from the back to the front.

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