Plastic waste processing and utilization granulating extruder

Abstract

The application relates to the field of plastic waste processing and discloses a granulating extruder for plastic waste processing and utilization, which comprises a base plate, a feeding cylinder and a feeding hopper, a plurality of support rods are connected to the corners of the upper surface of the base plate, a fixed disc is fixedly installed at the top end of the support rods, a connecting column is connected to the side surface of the fixed disc, the feeding cylinder is installed at the top end of the connecting column, a first feeding groove is formed in the lower inner wall of the feeding cylinder, the feeding hopper is arranged at the top end of the feeding cylinder and communicates with the feeding cylinder, a first driving structure drives the switching structure to rotate, so that a plurality of extrusion material structures are switched to corresponding material receiving positions, processing melting positions and extrusion and feeding positions, thus the feeding, processing melting and extrusion and feeding work can be simultaneously performed during the processing, the crushing work on the next batch of plastic waste can be continuously performed during the processing, the working time is reasonably utilized, and the processing efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the technical field of plastic waste processing, and in particular to a granulation extruder for processing and utilizing plastic waste. Background Technology

[0002] Waste plastic processing refers to the process of transforming waste plastic products into reusable plastic raw materials or new products through a series of technological processes. This process not only helps reduce environmental pollution but also realizes the recycling of resources, resulting in significant economic and environmental benefits. Granulation extruders are used when processing plastic waste into granules.

[0003] In existing granulation extruders, the extrusion bin can crush plastic waste inside the processing bin. The multiple sets of rotating shafts and spiral blades can improve the production efficiency of plastic granules. The crushing bin can pulverize the raw materials, making the subsequent heating, melting, and molding more uniform and faster, and ensuring the overall quality of the plastic granules. The granulation component can uniformly granulate the plastic produced by the screw granulator. The cooler can quickly cool the granules that have just arrived at the conveyor belt and then transport them to the designated location. The entire invention has a simple structure, is easy to operate, and can produce plastic granules with high efficiency and high quality, making it highly practical.

[0004] However, in actual processing, the plastic waste needs to be crushed before it is melted and extruded. This means that the next batch of plastic waste cannot be crushed and melted during the processing, the working time is not fully utilized, and the work efficiency needs to be improved. Therefore, there are areas for improvement. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a granulation extruder for processing and utilizing plastic waste.

[0006] The present invention provides a granulation extruder for processing and utilizing plastic waste, which adopts the following technical solution:

[0007] A granulation extruder for processing and utilizing plastic waste includes a chassis, a feeding cylinder, and a feeding hopper. Multiple support rods are connected to the upper corners of the chassis. A fixed plate is fixedly installed at the top of each support rod. A connecting column is connected to the side of the fixed plate. The feeding cylinder is installed at the top of the connecting column. A first feeding groove is formed on the lower inner wall of the feeding cylinder. A feeding hopper is located at the top of the feeding cylinder and communicates with the feeding cylinder. A crushing structure is provided in the feeding hopper. A pushing structure is provided inside the feeding cylinder. A switching structure is provided between the feeding cylinder and the fixed plate.

[0008] The switching structure includes a switching disk rotatably mounted on a fixed disk, a plurality of extrusion structures on the switching disk, a plurality of fixed columns connected to the switching disk, a turntable mounted on the top of the fixed columns, the turntable being rotatably mounted below the feeding cylinder, and a first driving structure on the side of the fixed disk.

[0009] The first drive structure includes a mounting plate connected to the side of the fixed disk, a first motor mounted under the mounting plate, a first gear sleeved on the top of the output shaft of the first motor, and the first gear meshing with the teeth on the side of the switching disk.

[0010] The extrusion structure includes multiple feeding hoppers fixedly installed below the turntable. The turntable has multiple first feeding slots, each of which is connected to a corresponding feeding hopper. A feeding cylinder is provided at the bottom of the feeding hopper. An anti-blocking structure is provided inside the feeding cylinder. A feeding frame is connected to the lower side of one side of the feeding cylinder. An extrusion cylinder is provided on the switching plate at the position corresponding to each feeding frame. An extrusion structure is provided inside the extrusion cylinder.

[0011] The switching plate has a third feeding groove that connects to the extrusion cylinder. An extrusion head is installed under the fixed plate. A fourth feeding groove that connects to the extrusion head is opened on the fixed plate. A pelletizing structure is provided under the fixed plate.

[0012] Preferably, the crushing structure includes two first rotating rods that rotate through the feed hopper. A crushing roller is sleeved on the first rotating rod, and a crushing blade is provided on the crushing roller. A second gear is fixedly sleeved on the front end of the first rotating rod, and the two second gears are meshed together. A second motor is installed on the rear side of the feed hopper, and one end of the output shaft of the second motor is connected to one of the first rotating rods.

[0013] Preferably, the extrusion structure includes a second rotating rod that is rotatably inserted into the extrusion cylinder, a spiral blade being provided on the portion of the second rotating rod inside the extrusion cylinder, a heating rod being provided inside the second rotating rod, a third gear being fixedly sleeved on the top end of the second rotating rod, and a second driving structure being provided on the fixed disk.

[0014] Preferably, the second drive structure includes a rotary seat that rotates through the center of the fixed disk shaft, the rotary seat movably passing through the switching disk, a third motor installed inside the rotary seat, a third rotating rod connected to one of the output shafts of the third motor, a top block installed at the top of the third rotating rod, multiple connecting rods connected to the side of the top block, a drive ring provided at one end of the connecting rod, and teeth provided on the side of the drive ring that mesh with a third gear.

[0015] Preferably, the anti-clogging structure includes through grooves formed on both sides of the feed cylinder, through which an H-shaped plate moves. An inner groove is formed inside the H-shaped plate, and a reciprocating plate is movably arranged in the inner groove. Multiple anti-clogging blocks are arranged on one side of the reciprocating plate, and the anti-clogging blocks are inclined downwards towards the side away from the reciprocating plate. A guide structure is provided between the reciprocating plate and the feed cylinder. A cylinder is installed on the switching plate below the feed cylinder. The top of the cylinder output shaft is connected to a lifting frame, and the two ends of the lifting frame are respectively connected to two H-shaped plates.

[0016] Preferably, the guiding structure includes a through strip connected to the reciprocating plate, the through strip movably passing through the H-shaped plate, one end of the through strip being fixedly passed through a fixing rod, a fixing plate being connected to the side of the feed cylinder, a guide plate being provided on the fixing plate, the guide plate being in the shape of a parallelogram, and a second spring being connected between the reciprocating plate and one side wall of the inner groove.

[0017] Preferably, the pelletizing structure includes a fixed frame connected to the bottom of the fixed plate, one end of the fixed frame rotatably passes through a fourth rotating rod, one end of the fourth rotating rod is equipped with multiple cutters, and a driving structure is provided between the fourth rotating rod and the third motor.

[0018] Preferably, the driving structure includes a fifth rotating rod that rotates through the other end of the fixed frame. Both the fifth rotating rod and the fourth rotating rod are fitted with pulleys, and belts are tightly fitted onto the two pulleys. One end of the fifth rotating rod is connected to the other output shaft of the third motor, and a cleaning structure is provided on the fixed frame.

[0019] Preferably, the cleaning structure includes a fixing strip connected to a fixing frame, a U-shaped frame installed at one end of the fixing strip, two wiping plates moving through the U-shaped frame, a first spring connecting the wiping plates and the U-shaped frame, and a cleaning gap between the two wiping plates.

[0020] Preferably, the pushing structure includes a material guide seat disposed in the middle of the lower inner wall of the feeding cylinder. The material guide seat is in the shape of a frustum. A sixth rotating rod rotates through the middle of the material guide seat. A pushing plate is disposed at the top of the sixth rotating rod. The side of the pushing plate is attached to the material guide seat and the inner wall of the feeding cylinder.

[0021] In summary, the present invention has the following beneficial technical effects:

[0022] 1. This invention sets up a crushing structure, a first driving structure, and a switching structure, and sets multiple extrusion structures on the switching plate of the switching structure. The first driving structure drives the switching structure to rotate, thereby switching multiple extrusion structures to the corresponding receiving position, processing melting position, and extrusion feeding position. In this way, feeding, processing melting, and extrusion feeding can be carried out simultaneously during the processing. At the same time, the next batch of plastic waste can continue to be crushed, making reasonable use of working time and greatly improving processing efficiency.

[0023] 2. This invention provides an anti-blocking structure and a guiding structure on the feed cylinder. The anti-blocking structure, together with the guiding structure, can prevent blockage during material feeding, thus avoiding the problem of clogging.

[0024] 3. By setting up a second driving structure, a driving structure, a pelletizing structure, an extrusion structure, and a pushing structure, the present invention can not only drive the spiral blade in the extrusion structure to rotate and extrude the material under the action of the second driving structure, but also drive the pelletizing structure to automatically pelletize the extruded plastic in conjunction with the driving structure. Furthermore, the pushing structure can also push the material in the feeding cylinder to ensure the efficiency of the feeding process.

[0025] 4. By setting up a cleaning structure, the present invention can automatically clean the cutter when it rotates to cut pellets, thus ensuring the quality of pellets. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a granulation extruder for processing and utilizing plastic waste in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the feed cylinder in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the switching structure in an embodiment of the present invention;

[0029] Figure 4 This is an embodiment of the present invention. Figure 3 Enlarged view of the structure at point A;

[0030] Figure 5 This is a schematic diagram of the extrusion structure in an embodiment of the present invention;

[0031] Figure 6 This is an embodiment of the present invention. Figure 5 Enlarged view of the structure at point B;

[0032] Figure 7 This is a schematic diagram of the structure of the feed cylinder in an embodiment of the present invention;

[0033] Figure 8This is an embodiment of the present invention. Figure 7 Enlarged view of the structure at point C;

[0034] Figure 9 This is a schematic diagram of the structure below the fixed disk in an embodiment of the present invention;

[0035] Figure 10 This is an embodiment of the present invention. Figure 9 Enlarged view of the structure at point D.

[0036] Explanation of reference numerals in the attached drawings: 1. Chassis; 2. Support rod; 3. Fixed plate; 4. Connecting column; 5. Feed cylinder; 6. Feed hopper; 7. Switching plate; 8. Mounting plate; 9. First motor; 10. First gear; 11. Fixed column; 12. Turntable; 13. First feeding chute; 14. Feed cylinder; 15. Extrusion cylinder; 16. First spring; 17. Second motor; 18. First rotating rod; 19. Second gear; 20. Crushing roller; 21. Third gear; 22. Second rotating rod; 23. Rotary seat; 24. Third motor; 25. Third rotating rod; 26. Top block; 27. Connecting rod; 28. Drive ring; 29. ​​Feed hopper; 30. Cylinder; 31. Lifting frame; 32. H-shaped plate; 33. Through strip; 34. Fixing rod; 35. Through groove; 36. Inner groove; 37. Reciprocating plate; 38. Anti-blocking block; 39. Second spring; 40. Fixing plate; 41. Guide plate; 42. Fixing frame; 43. Fourth rotating rod; 44. Cutter; 45. Fifth rotating rod; 46. Pulley; 47. Belt; 48. Fixing strip; 49. U-shaped frame; 50. Wiping plate; 51. Push plate; 52. Feed seat; 53. Sixth rotating rod; 54. Discharge frame; 55. Extruder head. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-10 The present invention will be described in further detail below.

[0038] This invention discloses a granulation extruder for processing and utilizing plastic waste. (Refer to...) Figure 1-10 A granulation extruder for processing and utilizing plastic waste includes a chassis 1, a feeding cylinder 5, and a feeding hopper 6. Multiple support rods 2 are connected to the upper corners of the chassis 1. A fixed plate 3 is fixedly installed at the top of the support rods 2. A connecting column 4 is connected to the side of the fixed plate 3. The feeding cylinder 5 is installed at the top of the connecting column 4. A first feeding groove 13 is opened on the lower inner wall of the feeding cylinder 5. The feeding hopper 6 is set at the top of the feeding cylinder 5 and is connected to the feeding cylinder 5. A crushing structure is set in the feeding hopper 6. A pushing structure is set in the feeding cylinder 5. A switching structure is set between the feeding cylinder 5 and the fixed plate 3.

[0039] The switching structure includes a switching disk 7 rotatably mounted on a fixed disk 3, multiple sets of extrusion structures are set on the switching disk 7, multiple fixed columns 11 are connected to the switching disk 7, a turntable 12 is installed at the top of the fixed columns 11, the turntable 12 is rotatably mounted below the feeding cylinder 5, and a first drive structure is set on the side of the fixed disk 3.

[0040] The first drive structure includes a mounting plate 8 connected to the side of the fixed disk 3, a first motor 9 mounted under the mounting plate 8, a first gear 10 sleeved on the top of the output shaft of the first motor 9, and the first gear 10 meshing with the teeth on the side of the switching disk 7.

[0041] The extrusion structure includes multiple feeding hoppers 29 fixedly installed below the turntable 12. Multiple second feeding slots are opened on the turntable 12. Each second feeding slot is connected to the corresponding feeding hopper 29. A feeding cylinder 14 is set at the bottom of the feeding hopper 29. An anti-blocking structure is set inside the feeding cylinder 14. A feeding frame 54 is connected to the lower side of one side of the feeding cylinder 14. An extrusion cylinder 15 is set on the switching plate 7 at the position corresponding to each feeding frame 54. An extrusion structure is set inside the extrusion cylinder 15.

[0042] The switching disk 7 has a third feeding groove that connects to the extrusion cylinder 15. The extrusion head 55 is installed under the fixed disk 3. The fixed disk 3 has a fourth feeding groove that connects to the extrusion head 55. The fixed disk 3 has a pelletizing structure.

[0043] The crushing structure includes two first rotating rods 18 that rotate through the feed hopper 6. Crushing rollers 20 are fitted onto the first rotating rods 18, and crushing blades are mounted on the crushing rollers 20. Second gears 19 are fixedly fitted onto the front ends of the first rotating rods 18, and the two second gears 19 are meshed together. A second motor 17 is mounted on the rear side of the feed hopper 6, and one end of the output shaft of the second motor 17 is connected to one of the first rotating rods 18. During operation, the plastic waste to be processed is first fed into the feed hopper 6. The second motor 17 is started, and the two sets of first rotating rods 18 and crushing rollers 20 are rotated via the two second gears 19. The crushing blades on the crushing rollers 20 crush the plastic waste. Simultaneously, the first motor 9 on the mounting plate 8 is started, and the switching disc 7 is rotated via the first gear 10, thereby rotating multiple sets of feed cylinders 14 and extrusion cylinders 15. This switches one set of feed cylinders 14 and extrusion cylinders 15 to a position below the first discharge trough 13, through which the corresponding second discharge trough and... The feeding hopper 29 feeds the crushed plastic into the feeding cylinder 14, and then the feeding frame 54 feeds it into the extrusion cylinder 15. The heating rod in the second rotating rod 22 inside the extrusion cylinder 15 heats and melts the crushed waste. Then, the first motor 9 is started again to drive the switching plate 7 to rotate, switching the next set of feeding cylinders 14 and extrusion cylinders 15 to the first feeding trough 13 to continue receiving the crushed plastic. During this process, the melting work continues in the previous set of extrusion cylinders 15. Then, the first motor 9 is started again to drive the switching plate 7 to rotate, thereby switching the next set of extrusion cylinders 15 to the area below the first feeding trough 13 to receive the material. At the same time, the corresponding extrusion cylinder 15 is switched to the fourth feeding trough. At this time, the molten plastic in the extrusion cylinder 15 can be extruded into the extrusion head 55, and the extrusion work is performed by the extrusion head 55. In this way, the crushing, receiving, melting and extrusion of plastic can be carried out at the same time during the processing, which greatly improves the work efficiency.

[0044] See Figures 1-8 The extrusion structure includes a second rotating rod 22 that is rotatably inserted into the extrusion cylinder 15. The part of the second rotating rod 22 inside the extrusion cylinder 15 is provided with a spiral blade. A heating rod is provided inside the second rotating rod 22. A third gear 21 is fixedly sleeved on the top of the second rotating rod 22. A second drive structure is provided on the fixed disk 3.

[0045] The second drive structure includes a rotating base 23 that rotates through the axis of the fixed disk 3. The rotating base 23 moves through the switching disk 7. A third motor 24 is installed inside the rotating base 23. A third rotating rod 25 is connected to one of the output shafts of the third motor 24. A top block 26 is installed at the top of the third rotating rod 25. Multiple connecting rods 27 are connected to the side of the top block 26. A drive ring 28 is provided at one end of the connecting rod 27. Teeth that mesh with the third gear 21 are provided on the side of the drive ring 28. During the melting process of the plastic in the extrusion cylinder 15, the third motor 24 can be started to drive the third rotating rod 25 and the drive ring 28 to rotate as a whole. The third gear 21 drives the third rotating rod 25 and the spiral blade to rotate, which can not only speed up the melting of the plastic, but also extrude the molten plastic in the extrusion cylinder 15 into the extrusion head 55 for automatic extrusion.

[0046] The anti-blocking structure includes through grooves 35 on both sides of the feed cylinder 14, through which H-shaped plates 32 move. An inner groove 36 is opened in the H-shaped plate 32, and a reciprocating plate 37 is movably arranged in the inner groove 36. Multiple anti-blocking blocks 38 are arranged on one side of the reciprocating plate 37. The anti-blocking blocks 38 are inclined downwards towards the side away from the reciprocating plate 37. A guide structure is arranged between the reciprocating plate 37 and the feed cylinder 14. A cylinder 30 is installed on the switching disk 7 below the feed cylinder 14. The top of the output shaft of the cylinder 30 is connected to a lifting frame 31. The two ends of the lifting frame 31 are respectively connected to the two H-shaped plates 32.

[0047] The guiding structure includes a through strip 33 connected to the reciprocating plate 37, through which the through strip 33 movably passes through the H-shaped plate 32. One end of the through strip 33 is fixedly passed through the fixing rod 34. A fixing plate 40 is connected to the side of the feed cylinder 14, and a guide plate 41 is provided on the fixing plate 40. The guide plate 41 is parallelogram-shaped. A second spring 39 is connected between the reciprocating plate 37 and one side wall of the inner groove 36. After the crushed plastic is fed into the feed cylinder 14, it is fed into the extrusion cylinder 15 by the feeding frame 54 for melting. During the feeding process, the cylinder 30 can be activated to drive the H-shaped plate 32 to move up and down on the feed cylinder 14. When the H-shaped plate 32 moves down, it drives the through strip 33 and the fixing rod 34 to move down as a whole, and guides the fixing rod 34 at an angle on the guide plate 41. The downward movement of the H-shaped plate 32 pushes the through strip 33 and the reciprocating plate 37 to move as a whole, causing the second spring 39 to deform. This pushes the anti-blocking block 38 out of the inner groove 36 and inserts it into the feed cylinder 14. The downward movement of the reciprocating plate 37 drives the anti-blocking block 38 to move downward, pushing the plastic downward in the feed cylinder 14, thus avoiding the problem of material blockage. When the H-shaped plate 32 moves down to the lowest position, under the elastic force of the second spring 39, it drives the reciprocating plate 37 and the anti-blocking block 38 to move in the opposite direction and reset. When the H-shaped plate 32 moves upward, under the guidance of the guide plate 41 inclined towards the fixed rod 34, it pushes the anti-blocking block 38 to move and insert it into the inner groove 36, avoiding the situation where the anti-blocking block 38 moves upward in the feed cylinder 14 and pushes the plastic when the H-shaped plate 32 moves upward, thus ensuring the quality of material feeding.

[0048] See Figure 1 , Figure 2 , Figure 9 and Figure 10 The pelletizing structure includes a fixed frame 42 connected to the fixed plate 3. One end of the fixed frame 42 rotates through the fourth rotating rod 43. Multiple cutters 44 are installed at one end of the fourth rotating rod 43. A driving structure is provided between the fourth rotating rod 43 and the third motor 24.

[0049] The driving structure includes a fifth rotating rod 45 that rotates through the other end of the fixed frame 42. Both the fifth rotating rod 45 and the fourth rotating rod 43 are fitted with pulleys 46. The two pulleys 46 are fitted with belts 47. One end of the fifth rotating rod 45 is connected to the other output shaft of the third motor 24. A cleaning structure is provided on the fixed frame 42.

[0050] The cleaning structure includes a fixing strip 48 connected to a fixing frame 42, a U-shaped frame 49 installed at one end of the fixing strip 48, two wiping plates 50 moving through the U-shaped frame 49, a first spring 16 connecting the wiping plates 50 and the U-shaped frame 49, and a cleaning gap between the two wiping plates 50.

[0051] The feeding structure includes a feeding seat 52 located in the middle of the lower inner wall of the feeding cylinder 5. The feeding seat 52 is truncated cone-shaped. A sixth rotating rod 53 rotates through the middle of the feeding seat 52. A feeding plate 51 is set at the top of the sixth rotating rod 53. The side of the feeding plate 51 is close to the feeding seat 52 and the inner wall of the feeding cylinder 5. During the extrusion of plastic by the extruder 55, the third motor 24 drives the fifth rotating rod 45 to rotate. Under the action of the pulley 46 and the belt 47, the fourth rotating rod 43 and the cutter 44 rotate as a whole to perform automatic pelletizing. During the rotation, the cutter 44 passes between two wiping plates 50. The wiping plates 50 can automatically clean the cutter 44. The structure is simple and the function is practical. The start of the third motor 24 drives the feeding plate 51 to rotate automatically in the feeding cylinder 5 through the sixth rotating rod 53, pushing the plastic in the feeding cylinder 5 to the first feeding trough 13 for feeding, ensuring feeding efficiency.

[0052] The implementation principle of a granulation extruder for processing and utilizing plastic waste according to an embodiment of the present invention is as follows: First, the plastic waste to be processed is fed into the feed hopper 6. The second motor 17 is started, which drives two sets of first rotating rods 18 and crushing rollers 20 to rotate through two second gears 19. The crushing blades on the crushing rollers 20 crush the plastic waste. At the same time, the first motor 9 on the mounting plate 8 is started, which drives the switching disk 7 to rotate through the first gear 10, thereby driving multiple sets of feed cylinders 14 and extrusion cylinders 15 to rotate. This switches one set of feed cylinders 14 and extrusion cylinders 15 to the position below the first discharge chute 13. The crushed plastic is then discharged into the feed cylinder 14 through the corresponding second discharge chute and feed hopper 29, and then discharged into the extrusion cylinder 15 through the discharge frame 54. When the crushed plastic is fed into the feed cylinder 14, the cylinder 30 can be activated to move the H-shaped plate 32 up and down on the feed cylinder 14. When the H-shaped plate 32 moves downward, it moves the through bar 33 and the fixing rod 34 downward as a whole. Under the guidance of the guide plate 41 inclined to the fixing rod 34, it pushes the through bar 33 and the reciprocating plate 37 to move as a whole, causing the second spring 39 to deform. This pushes the anti-blocking block 38 out of the inner groove 36 and inserts it into the feed cylinder 14. The downward movement of the reciprocating plate 37 drives the anti-blocking block 38 downward, which can push the plastic downward in the feed cylinder 14, thereby avoiding the problem of material blockage. When the H-shaped plate 32 moves to the lowest position, under the elastic force of the second spring 39, it drives the reciprocating plate 37 and the anti-blocking block 38 to move in the opposite direction as a whole. When the H-shaped plate 32 moves upward, guided by the inclined surface of the guide plate 41 facing the fixed rod 34, it pushes the anti-blocking block 38 to move and insert into the inner groove 36. This prevents the anti-blocking block 38 from moving upward and pushing the plastic in the feed cylinder 14 when the H-shaped plate 32 moves upward, ensuring the quality of material feeding. After the plastic is fed into the extrusion cylinder 15, the third motor 24 can be started to drive the third rotating rod 25 and the driving ring 28 to rotate as a whole. The third gear 21 drives the third rotating rod 25 and the spiral blade to rotate. Since the heating rod is installed in the third rotating rod 25, it can not only speed up the melting of the plastic, but also extrude the molten plastic in the extrusion cylinder 15 into the extrusion head 55 for automatic extrusion. Then, the first motor 9 is started to drive the switching plate 7 to rotate, and the lower... A set of feeding cylinders 14 and extrusion cylinders 15 are switched to the first discharge trough 13 to continue receiving crushed plastic. During this process, melting continues in the previous set of extrusion cylinders 15. Then, the first motor 9 is started to drive the switching disk 7 to rotate, thereby switching the next set of extrusion cylinders 15 to the area below the first discharge trough 13 to receive material. At the same time, the corresponding extrusion cylinder 15 is switched to the fourth discharge trough. At this time, the molten plastic in the extrusion cylinder 15 can be extruded into the extrusion head 55, where the extrusion head 55 performs the extrusion work. During the extrusion process, the third motor 24 is started to drive the fifth rotating rod 45 to rotate. Under the action of the pulley 46 and the belt 47, the fourth rotating rod 43 and the cutter 44 rotate as a whole to perform automatic pelletizing.Furthermore, as the cutter 44 rotates, it passes between two wiping plates 50, which automatically clean the cutter 44. This allows for simultaneous plastic crushing, receiving, melting, extrusion, and pelletizing during processing, significantly improving work efficiency.

[0053] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A granulation extruder for processing and utilizing plastic waste, comprising a chassis (1), a feeding cylinder (5), and a feeding hopper (6), characterized in that: The chassis (1) has multiple support rods (2) connected to its upper corners. A fixed plate (3) is fixedly installed at the top of the support rods (2). A connecting column (4) is connected to the side of the fixed plate (3). A feeding cylinder (5) is installed at the top of the connecting column (4). A first feeding groove (13) is opened on the lower inner wall of the feeding cylinder (5). A feeding hopper (6) is set at the top of the feeding cylinder (5). The feeding hopper (6) is connected to the feeding cylinder (5). A crushing structure is set in the feeding hopper (6). A pushing structure is set in the feeding cylinder (5). A switching structure is set between the feeding cylinder (5) and the fixed plate (3). The switching structure includes a switching disk (7) rotatably mounted on a fixed disk (3), a plurality of extrusion structures are provided on the switching disk (7), a plurality of fixed columns (11) are connected to the switching disk (7), a turntable (12) is installed at the top of the fixed column (11), the turntable (12) is rotatably mounted below the feed cylinder (5), and a first driving structure is provided on the side of the fixed disk (3). The first drive structure includes a mounting plate (8) connected to the side of the fixed disk (3), a first motor (9) is mounted under the mounting plate (8), a first gear (10) is sleeved on the top of the output shaft of the first motor (9), and the first gear (10) meshes with the teeth on the side of the switching disk (7). The extrusion structure includes multiple feed hoppers (29) fixedly installed below the turntable (12). Multiple second discharge slots are provided on the turntable (12). Each second discharge slot is connected to the corresponding feed hopper (29). A feed cylinder (14) is provided at the bottom of the feed hopper (29). An anti-blocking structure is provided inside the feed cylinder (14). A discharge frame (54) is connected to the lower side of one side of the feed cylinder (14). An extrusion cylinder (15) is provided on the switching disk (7) at the position corresponding to each discharge frame (54). An extrusion structure is provided inside the extrusion cylinder (15). The switching disk (7) has a third feeding groove that connects to the extrusion cylinder (15). The fixed disk (3) has an extrusion head (55) installed below it. The fixed disk (3) has a fourth feeding groove that connects to the extrusion head (55). The fixed disk (3) has a pelletizing structure below it.

2. The granulation extruder for processing and utilizing plastic waste according to claim 1, characterized in that: The crushing structure includes two first rotating rods (18) that rotate through the feed hopper (6). A crushing roller (20) is sleeved on the first rotating rod (18), and a crushing blade is provided on the crushing roller (20). A second gear (19) is fixedly sleeved on the front end of the first rotating rod (18), and the two second gears (19) are meshed together. A second motor (17) is installed on the rear side of the feed hopper (6), and one end of the output shaft of the second motor (17) is connected to one of the first rotating rods (18).

3. The granulation extruder for processing and utilizing plastic waste according to claim 1, characterized in that: The extrusion structure includes a second rotating rod (22) that is rotatably inserted into the extrusion cylinder (15). The second rotating rod (22) is provided with a spiral blade on the part inside the extrusion cylinder (15). A heating rod is provided inside the second rotating rod (22). A third gear (21) is fixedly sleeved on the top of the second rotating rod (22). A second driving structure is provided on the fixed disk (3).

4. The granulation extruder for processing and utilizing plastic waste according to claim 3, characterized in that: The second drive structure includes a rotating base (23) that rotates through the center of the fixed disk (3). The rotating base (23) moves through the switching disk (7). A third motor (24) is installed inside the rotating base (23). A third rotating rod (25) is connected to one of the output shafts of the third motor (24). A top block (26) is installed at the top of the third rotating rod (25). Multiple connecting rods (27) are connected to the side of the top block (26). A drive ring (28) is provided at one end of the connecting rod (27). Teeth that mesh with the third gear (21) are provided on the side of the drive ring (28).

5. A granulation extruder for processing and utilizing plastic waste according to claim 1, characterized in that: The anti-blocking structure includes through grooves (35) on both sides of the feed cylinder (14), through which H-shaped plates (32) move. An inner groove (36) is opened in the H-shaped plate (32), and a reciprocating plate (37) is movably arranged in the inner groove (36). Multiple anti-blocking blocks (38) are arranged on one side of the reciprocating plate (37). The anti-blocking blocks (38) are inclined downwards towards the side away from the reciprocating plate (37). A guide structure is provided between the reciprocating plate (37) and the feed cylinder (14). A cylinder (30) is installed on the switching disk (7) below the feed cylinder (14). The top of the output shaft of the cylinder (30) is connected to a lifting frame (31). The two ends of the lifting frame (31) are respectively connected to two H-shaped plates (32).

6. The granulation extruder for processing and utilizing plastic waste according to claim 5, characterized in that: The guiding structure includes a through strip (33) connected to the reciprocating plate (37), the through strip (33) moving through the H-shaped plate (32), one end of the through strip (33) being fixed through the fixing rod (34), a fixing plate (40) connected to the side of the feed cylinder (14), a guide plate (41) provided on the fixing plate (40), the guide plate (41) being in the shape of a parallelogram, and a second spring (39) connected between the reciprocating plate (37) and one side wall of the inner groove (36).

7. A granulation extruder for processing and utilizing plastic waste according to claim 1, characterized in that: The pelletizing structure includes a fixed frame (42) connected to the fixed plate (3), one end of the fixed frame (42) rotating through a fourth rotating rod (43), one end of the fourth rotating rod (43) being equipped with multiple cutters (44), and a drive structure being provided between the fourth rotating rod (43) and the third motor (24).

8. A granulation extruder for processing and utilizing plastic waste according to claim 7, characterized in that: The driving structure includes a fifth rotating rod (45) that rotates through the other end of the fixed frame (42). Both the fifth rotating rod (45) and the fourth rotating rod (43) are fitted with pulleys (46). A belt (47) is fitted on the two pulleys (46). One end of the fifth rotating rod (45) is connected to the other output shaft of the third motor (24). A cleaning structure is provided on the fixed frame (42).

9. A granulation extruder for processing and utilizing plastic waste according to claim 8, characterized in that: The cleaning structure includes a fixing strip (48) connected to a fixing frame (42), a U-shaped frame (49) is installed at one end of the fixing strip (48), two wiping plates (50) move through the U-shaped frame (49), a first spring (16) is connected between the wiping plate (50) and the U-shaped frame (49), and a cleaning gap is left between the two wiping plates (50).

10. A granulation extruder for processing and utilizing plastic waste according to claim 1, characterized in that: The feeding structure includes a feeding seat (52) located in the middle of the lower inner wall of the feeding cylinder (5). The feeding seat (52) is in the shape of a frustum. The feeding seat (52) rotates through the middle of the sixth rotating rod (53). The top of the sixth rotating rod (53) is provided with a feeding plate (51). The side of the feeding plate (51) is attached to the feeding seat (52) and the inner wall of the feeding cylinder (5).

Images