A plastic waste recycling apparatus

Abstract

The present application belongs to the technical field of plastic waste recycling, and discloses a plastic waste recycling device, which comprises a feeding box, a separation frame, a collecting cover, a cleaning cover, a dryer, a fixing frame and a linkage frame. The inner wall of the separation frame is provided with a groove, a separation rod, a guide plate and a sliding shaft. The top is assembled with a reciprocating screw rod, a moving rod, a spring telescopic rod and a magnetic cleaning brush through the fixing frame and the linkage frame, and is driven by a servo motor to realize reciprocating cleaning. The inner wall of the cleaning cover is connected with a pipe at both ends. The inner wall of the pipe close to the dryer is conical. A cleaning corrugated cylinder and an auger are arranged inside. A driving assembly is arranged on the outside. The dryer is connected through a conveying pipe. The present application realizes accurate separation of metal and plastic through the magnetic attraction reciprocating one-way cleaning structure, solves the problem of plastic retention, adopts the conical connecting pipe leak-proof design to reduce the loss of cleaning liquid, cooperates with the corrugated cylinder and the auger for cleaning, greatly improves the cleaning efficiency and the recovery purity, has strong structure linkage, continuous and efficient treatment, and significantly improves the practicality.

Description

Technical Field

[0001] This invention relates to the field of plastic waste recycling technology, and in particular to a plastic waste recycling device. Background Technology

[0002] Due to its difficulty in degradation and wide range of pollution, plastic waste recycling has become an important way to achieve environmental protection and resource recycling. Existing plastic recycling equipment mostly uses simple screening or manual sorting methods, which have low automation levels and obvious drawbacks: First, plastic waste often contains metal impurities, and traditional separation devices can only achieve rough separation. Metals easily adsorb onto the plastic, causing it to remain, resulting in incomplete cleaning and low recycling purity. Second, the washing process is mostly open spraying, leading to significant loss of washing liquid, wasting resources, and uneven cleaning effects, making it difficult to remove stubborn stains from the plastic surface. Third, the separation, washing, and drying processes are loosely connected, material transportation is discontinuous, and overall processing efficiency is low, making it difficult to meet the needs of large-scale recycling. Summary of the Invention

[0003] One objective of this invention is to provide a plastic waste recycling device.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a plastic waste recycling device, comprising a feeding box, a separating frame, a collection hood, a washing hood, a dryer, a fixing frame, and a linkage frame; one end of the separating frame is fixedly connected to the feeding box, and the other end away from the feeding box is fixedly connected to the collection hood, forming a closed conveying channel to prevent material from scattering; grooves are provided on both sides of the inner wall of the separating frame, a separating rod is fixedly installed in the groove, the end of the separating rod is rotatably connected to a guide plate, and a sliding shaft is slidably assembled in the groove, forming a one-way guiding structure to ensure smooth and uninterrupted cleaning action; a fixing frame is fixedly connected to the top of the separating frame, and a linkage frame is fixedly connected to the other end of the fixing frame away from the separating frame, and two sets of reciprocating screws are rotatably connected between the two to provide a stable and synchronous reciprocating driving force for the cleaning components.

[0005] Preferably, a moving rod is threadedly connected to the outer wall of the reciprocating screw, and a cleaning brush is connected to the bottom of the moving rod via a spring telescopic rod. Both ends of the cleaning brush are rotatably connected to the sliding shaft, realizing a unidirectional cleaning action that elastically extends and retracts and applies force only downwards.

[0006] Preferably, the cleaning brush has a magnetic structure with a built-in permanent magnet, which can directionally adsorb metal impurities and at the same time remove plastic waste that has been hooked by metal.

[0007] Preferably, the linkage frame is equipped with a gear transmission assembly, which is driven by a first servo motor to rotate the reciprocating screw. The transmission response is fast and the operation is stable, which can be adapted to the separation of waste with different mixing ratios.

[0008] Preferably, the gear transmission assembly includes a first bevel gear, a second bevel gear, a rotating rod, a third bevel gear, and a fourth bevel gear, to achieve smooth power reversal and synchronous transmission.

[0009] Preferably, the two ends of the inner wall of the cleaning hood are fitted with fixed connecting pipes, and the inner wall of the connecting pipe near the dryer is conical, which reduces the loss of cleaning liquid to the drying end by utilizing the fluid blocking effect.

[0010] Preferably, the corrugated cleaning cylinder and coaxial auger are rotatably assembled between the connecting pipes, and a drive component is provided on the outside to realize rubbing cleaning and uniform material pushing.

[0011] Preferably, the drive assembly includes a fixed plate, meshing gears, teeth, a second servo motor, and a third servo motor, which independently control the start / stop and speed of the cleaning bellows and the auger.

[0012] Preferably, a first support frame and a discharge pipe are fixed at the bottom of the cleaning hood, and a second support frame is fixed at the bottom of the delivery box. The multi-point support ensures the stability of the equipment operation.

[0013] Preferably, the discharge port of the collection hood is sealed and connected to a connecting pipe on one side, and the conveying pipe is connected to the connecting pipe on the other side and the dryer, so as to realize continuous conveying of the entire process of separation, cleaning and drying.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] (1) The present invention uses a magnetic cleaning brush, which can both adsorb metal impurities and achieve unidirectional downward cleaning through the spring telescopic rod, repeatedly cleaning up hooked and entangled plastic waste; combined with the unidirectional guiding structure composed of groove, separation rod, rotatable guide plate and sliding shaft, it ensures smooth reciprocating motion of the cleaning brush, completely solving the problem of plastic residue and incomplete separation in traditional equipment, and significantly improving the purity of recycling; the two ends of the cleaning cover are attached to the connecting pipe, and the inner wall of the connecting pipe near the dryer is set as conical. The conical structure blocks the flow of cleaning liquid to the dryer side, saving cleaning resources; at the same time, it avoids dilution of cleaning liquid, ensures stable concentration of cleaning liquid, and improves the removal effect of stains on plastic surface.

[0016] (2) In this invention, the corrugated cleaning cylinder is driven to rotate by tooth meshing, which generates a friction and kneading effect on plastic waste to remove stubborn stains; the auger rotates synchronously to achieve uniform material conveying, so that the plastic and the cleaning liquid can fully contact each other, and the cleaning is thorough without dead corners. The cleaning efficiency is more than 40% higher than that of the traditional spraying method; the separation, cleaning and drying structures are seamlessly connected by the collection cover, connecting pipe and conveying pipe, and the material is continuously conveyed without manual transfer; multiple servo motors precisely control the actions of each component, with a high degree of automation, which is suitable for large-scale recycling operations and reduces labor costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 This is a bottom-view structural diagram of the present invention.

[0020] Figure 4 This is a top view of the structure of the present invention.

[0021] Figure 5 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0022] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point B.

[0023] Figure 7 For the present invention Figure 2 Enlarged structural diagram at point C.

[0024] In the diagram: 1. Separating frame; 2. Collection hood; 3. Dispensing box; 4. Cleaning hood; 5. Dryer; 6. Fixing frame; 7. Linkage frame; 8. Reciprocating screw; 9. Moving rod; 10. Spring telescopic rod; 11. Cleaning brush; 12. Groove; 13. Separating rod; 14. Guide plate; 15. Sliding shaft; 16. First bevel gear; 17. Rotating rod; 18. Second bevel gear; 19. Third bevel gear; 20. Fourth bevel gear; 21. First servo motor; 22. Magnetic suction plate; 23. Vibration motor; 24. Connecting pipe; 25. Cleaning corrugated cylinder; 26. Screwdriver; 27. Tooth; 28. Fixing plate; 29. ​​Meshing gear; 30. Second servo motor; 31. Third servo motor; 32. Conveying pipe; 33. Discharge pipe; 34. First support frame; 35. Second support frame; 36. Discharge plate. Detailed Implementation

[0025] The present invention will now be further described in conjunction with specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this invention, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0027] It should be noted that the terms "first" and "second" in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] One preferred embodiment of the present invention, such as Figures 1 to 7 As shown, a plastic waste recycling device includes a feeding box 3, a separating frame 1, a collection cover 2, a washing cover 4, a dryer 5, a fixing frame 6, and a linkage frame 7. The left end of the separating frame 1 is fixedly connected to the feeding box 3, and the right end is fixedly connected to the collection cover 2. The inner wall of the separating frame 1 has symmetrical grooves 12 on the left and right sides. A separating rod 13 is horizontally fixed in each groove 12. The outer end of the separating rod 13 is rotatably connected to a guide plate 14 through a pin. The guide plate 14 can rotate freely around the pin. A sliding shaft 15 is slidably assembled inside the groove 12 and below the separating rod 13. The sliding shaft 15 can slide back and forth along the length of the groove 12.

[0029] A fixed frame 6 is vertically fixed to the top of the separating frame 1, and a linkage frame 7 is horizontally fixed to the top of the fixed frame 6. Two sets of reciprocating screws 8 are symmetrically rotatably connected between the fixed frame 6 and the linkage frame 7. A moving rod 9 is threadedly connected to the outer wall of the reciprocating screw 8. The moving rod 9 can move back and forth along its axis as the reciprocating screw 8 rotates. Multiple sets of spring telescopic rods 10 are vertically installed at equal intervals at the bottom of the moving rod 9. The bottom ends of all the spring telescopic rods 10 are fixed to the cleaning brush 11. The left and right ends of the cleaning brush 11 are rotatably connected to the corresponding side sliding shafts 15 through pins. The cleaning brush 11 has a magnetic attraction structure with built-in permanent magnets.

[0030] The linkage frame 7 is equipped with a gear transmission assembly. The top ends of the two sets of reciprocating screws 8 extend into the linkage frame 7 and fix the first bevel gear 16. The rotating rod 17 is rotatably installed inside the linkage frame 7. The second bevel gear 18 and the fourth bevel gear 20 are fixed on the outside of the rotating rod 17. The second bevel gear 18 meshes with the first bevel gear 16 on the left. The third bevel gear 19 is rotatably installed on the inner wall of the linkage frame 7. The third bevel gear 19 meshes with the fourth bevel gear 20 and the output shaft of the first servo motor 21. The first servo motor 21 is fixedly installed on the outside of the linkage frame 7.

[0031] A cleaning hood 4 is installed below the collection hood 2. The left and right ends of the inner wall of the cleaning hood 4 are tightly fitted with connecting pipes 24. The left end of the left connecting pipe 24 is sealed and connected to the discharge port of the collection hood 2, and the inner wall of the right connecting pipe 24 is tapered. A cleaning corrugated cylinder 25 is rotatably assembled between the two sets of connecting pipes 24. An auger 26 is coaxially rotatably assembled inside the cleaning corrugated cylinder 25. Fixing plates 28 are symmetrically fixed on the outer side of the cleaning hood 4. A meshing gear 29 is rotatably installed between the two sets of fixing plates 28. Teeth 27 are fixed at equal intervals on the outer wall of the cleaning corrugated cylinder 25, and the teeth 27 mesh with the meshing gear 29. A second servo motor 30 is fixed on the outer side of the fixing plate 28, and the output shaft of the second servo motor 30 is fixed to the meshing gear 29. A third servo motor 31 is fixed on the right end of the cleaning hood 4, and the output shaft of the third servo motor 31 is fixed to the right end of the auger 26.

[0032] The bottom of the cleaning hood 4 is connected to the conveying pipe 32. The top end of the conveying pipe 32 is sealed to the right-side connecting pipe 24, and the bottom end is connected to the feed inlet of the dryer 5. A discharge plate 36 is installed on the right side of the dryer 5. Two sets of first support frames 34 and discharge pipe 33 are fixed at the bottom of the cleaning hood 4, and two sets of second support frames 35 are fixed at the bottom of the feeding box 3. The first support frames 34 and second support frames 35 together support the entire equipment to ensure stable operation.

[0033] Working principle:

[0034] In use, first, plastic waste mixed with metal impurities is put into the feeding box 3, and the material falls into the separation frame 1. The first servo motor 21 is started, which drives the third bevel gear 19 to rotate. The third bevel gear 19 drives the rotating rod 17 to rotate through the fourth bevel gear 20. The rotating rod 17 drives the first bevel gear 16 to rotate through the second bevel gear 18, which in turn drives the two sets of reciprocating screws 8 to rotate synchronously. The reciprocating screws 8 drive the moving rod 9 to move back and forth. The moving rod 9 drives the cleaning brush 11 to move back and forth through the spring telescopic rod 10. The two ends of the cleaning brush 11 drive the sliding shaft 15 to slide along the groove 12. When the sliding shaft 15 moves forward, it pushes the guide plate 14 to rotate upward, and the sliding shaft 15 passes over the guide plate 14. When the sliding shaft 15 retracts, the guide plate 14 falls into a slope shape under the action of gravity. The sliding shaft 15 slides along the slope of the guide plate 14 to the top of the separation rod 13, and falls below the end of the separation rod 13, realizing the unidirectional reciprocating motion of the cleaning brush 11. The magnetic cleaning brush 11 adsorbs metal impurities in the material. At the same time, through the elastic extension and retraction of the spring telescopic rod 10, it only sweeps downwards, completely sweeping away the plastic waste that has been hooked and intercepted by the metal impurities, achieving precise separation of metal and plastic. The separated plastic waste falls into the collection hood 2.

[0035] Plastic waste enters the left connecting pipe 24 through the discharge port of the collection hood 2, and is then conveyed into the cleaning hood 4, which is pre-filled with cleaning fluid. The second servo motor 30 and the third servo motor 31 are started. The second servo motor 30 drives the meshing gear 29 to rotate, which in turn drives the cleaning corrugated drum 25 to rotate via teeth 27, rubbing and cleaning the plastic waste. The third servo motor 31 drives the auger 26 to rotate, pushing the plastic waste to the right at a uniform speed, ensuring full contact between the plastic and the cleaning fluid to remove surface stains. The inner wall of the right connecting pipe 24 is conical, preventing the cleaning fluid from flowing towards the dryer 5, reducing fluid loss and ensuring cleaning effectiveness. After cleaning, the plastic waste enters the dryer 5 through the right connecting pipe 24 and the conveying pipe 32. The dryer 5 dries the plastic waste, and after drying, it is discharged through the discharge plate 36, completing the entire recycling process.

[0036] The basic principles, main features, and advantages of this invention have been described above. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection claimed by this invention is defined by the appended claims and their equivalents.

Claims

1. A plastic waste recycling device, characterized in that, The system includes a feeding box (3), a separating frame (1), a collection cover (2), a washing cover (4), a dryer (5), a fixing frame (6), and a linkage frame (7). One end of the separating frame (1) is fixedly connected to the feeding box (3), and the other end away from the feeding box (3) is fixedly connected to the collection cover (2). Grooves (12) are provided on both sides of the inner wall of the separating frame (1). A separating rod (13) is fixedly installed in the groove (12). The end of the separating rod (13) is rotatably connected to a guide plate (14). A sliding shaft (15) is slidably assembled in the groove (12). (1) A fixed frame (6) is fixed at the top. A linkage frame (7) is fixed at one end of the fixed frame (6) away from the separation frame (1). Two sets of reciprocating screws (8) are rotatably connected between the two. The reciprocating screws (8) are threadedly connected to the moving rod (9). The bottom of the moving rod (9) is connected to the cleaning brush (11) through the spring telescopic rod (10). The two ends of the cleaning brush (11) are rotatably connected to the sliding shaft (15). The linkage frame (7) is equipped with a gear transmission assembly. The first servo motor (21) drives the reciprocating screws (8) to drive the cleaning brush (11) to reciprocate and clean. Below the collection hood (2), a cleaning hood (4) is provided. The two ends of the inner wall of the cleaning hood (4) are attached to the connecting pipe (24). The inner wall of the connecting pipe (24) near the dryer (5) is conical. The cleaning corrugated cylinder (25) and the auger (26) are rotated and assembled between the connecting pipes (24). A drive assembly is provided on the outside of the cleaning hood (4) to drive the cleaning structure to work. The cleaning hood (4) is connected to the dryer (5) through the conveying pipe (32). A discharge plate (36) is provided on one side of the dryer (5). The plastic and metal wastes are efficiently separated by reciprocating cleaning with a magnetic cleaning brush. The conical connecting pipe can reduce the loss of cleaning liquid, optimize the plastic cleaning effect, and improve the recycling purity.

2. The plastic waste recycling equipment as described in claim 1, characterized in that: The gear transmission assembly includes a first bevel gear (16), a second bevel gear (18), a rotating rod (17), a third bevel gear (19), and a fourth bevel gear (20). The first bevel gear (16) is fixed to the end of the corresponding reciprocating screw (8). The second bevel gear (18) and the fourth bevel gear (20) are fixed to the outside of the rotating rod (17). The second bevel gear (18) meshes with the first bevel gear (16). The third bevel gear (19) rotating inside the linkage frame (7) meshes with the fourth bevel gear (20) and the output shaft of the first servo motor (21).

3. The plastic waste recycling equipment as described in claim 1, characterized in that: The drive assembly includes a fixed plate (28), a meshing gear (29), teeth (27), a second servo motor (30), and a third servo motor (31). The fixed plate (28) is fixed to the outside of the cleaning hood (4), the meshing gear (29) is rotatably assembled between the fixed plates (28), the teeth (27) on the outside of the cleaning corrugated cylinder (25) mesh with the meshing gear (29), the output shaft of the second servo motor (30) is fixed to the meshing gear (29), and the output shaft of the third servo motor (31) is fixed to the auger (26).

4. The plastic waste recycling equipment as described in claim 1, characterized in that: The sliding shaft (15) is slidably disposed in the groove (12) and located below the separating rod (13). The guide plate (14) can rotate freely. When the sliding shaft (15) moves forward, it passes over the guide plate (14). When it retracts, it moves along the slope of the guide plate (14) to the top of the separating rod (13) and falls below the end of the separating rod (13).

5. The plastic waste recycling equipment as described in claim 1, characterized in that: The cleaning brush (11) has a magnetic structure that can adsorb metal products and clean plastic products that are blocked by metal products, thereby achieving precise separation of metal and plastic waste.

6. The plastic waste recycling equipment as described in claim 1, characterized in that: The bottom of the cleaning hood (4) is fixed with a first support frame (34) and a discharge pipe (33), and the bottom of the delivery box (3) is fixedly connected with a second support frame (35) for supporting and positioning the overall equipment.

7. The plastic waste recycling equipment as described in claim 1, characterized in that: The discharge port of the collection hood (2) is connected and fixedly connected to one of the connecting pipes (24), and the conveying pipe (32) is connected to the other connecting pipe (24) and the inside of the dryer (5) to realize the continuous conveying and processing of plastic waste.

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