Crystallization drying and integrated energy-saving granulation system and method for recovering PET bottle flakes

Abstract

The invention relates to the technical field of PET bottle flakes, and discloses a crystallization drying and integrated energy-saving granulation system and method for recycling PET bottle flakes, the crystallization drying and integrated energy-saving granulation system comprises a conveying system, a discharging system, a cooling system, a drying system and a workbench, an air outlet system is arranged above the drying system, and a heating assembly is arranged in an inner cavity of the air outlet system; a control system and a placing shell are arranged above the workbench, and a mounting shell is arranged above the placing shell. According to the invention, the servo motor drives the worm to synchronously drive the fan system to supply air for drying to be linked with the worm gear, an additional power source is not needed, and the energy consumption is further reduced; the overturning plate drives the cutting assembly to conduct granulation, through a guide sliding groove, a guide sliding block, a positioning plate, a telescopic rod and the like, the cutting assembly horizontally moves after cutting, it is avoided that PET strips are blocked and bent, it is guaranteed that feeding is conducted through a feeding port and discharging is conducted through a discharging port smoothly, a control system conducts precise regulation and control, and stable operation is guaranteed through the arrangement of a shell placing and shell installing. The granulation efficiency and the product quality are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of PET bottle flake technology, specifically, it relates to an integrated energy-saving granulation system and method for the crystallization drying and recycling of PET bottle flakes. Background Technology

[0002] As a core raw material for plastic recycling, the crystallization, drying, and granulation of PET bottle flakes are key processes in the recycling process, directly determining the quality of recycled granules, production energy consumption, and operational efficiency. Current traditional PET bottle flake recycling processes generally suffer from fragmented workflows, high energy consumption, and poor operational stability, making it difficult to meet the industry's demands for efficient, energy-saving, and high-quality granulation.

[0003] In the granulation process, the existing cutting mechanism lacks a stable guiding and positioning structure, which easily leads to interference and jamming after cutting. This causes the PET strips to be squeezed and bent, the feed inlet to be blocked, and the discharge to be obstructed. This not only interrupts continuous production, but also causes uneven particle size and an increase in the defect rate.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: An integrated energy-saving granulation system for crystallization drying of recycled PET bottle flakes includes a conveying system, a discharge system, a cooling system, a drying system, and a workbench. An air outlet system is provided above the drying system, and a heating component is provided inside the air outlet system. A control system and a placement shell are provided above the workbench. An installation shell is provided above the placement shell. A control system is also provided on the workbench. A circular shell is provided above the installation shell. The placement housing is provided with a feed inlet and a discharge outlet on both sides, and the inner cavity of the placement housing is also provided with a flip plate, and the bottom of the flip plate is provided with a cutting component; The mounting housing is equipped with a drive assembly, which is used to supply air to the air outlet system and to drive the flip plate to flip. The flip plate can also move the cutting assembly horizontally.

[0006] In a preferred embodiment of the present invention, the conveying system, the discharge system, the cooling system and the drying system are arranged sequentially from left to right, and each is provided with a support leg at the bottom. Mounting plates are arranged on both sides of the drying system, and the two mounting plates are symmetrical to each other. A placement plate is provided above each of the two mounting plates, and an air outlet system is provided on the placement plate.

[0007] In a preferred embodiment of the present invention, the drive assembly includes a servo motor, which is disposed in the mounting housing. A worm gear is disposed at the output end of the servo motor and moves through the mounting housing. A fan system is disposed at the other end of the worm gear and extends through the air outlet system.

[0008] In a preferred embodiment of the present invention, a worm wheel is meshed on one side wall of the worm gear, and a rotating rod is provided through the middle of the worm wheel. The two ends of the rotating rod are respectively rotatably disposed on the opposite side walls of the inner cavity of the mounting housing, and a cam is also provided on the rotating rod.

[0009] In a preferred embodiment of the present invention, a movable plate is fitted to the bottom of the cam, a movable rod is provided at the bottom of the movable plate, the movable rod movably passes through the circular housing, a return spring is sleeved on the outside of the movable rod, the two ends of the reciprocating spring are respectively provided on the side walls opposite to the movable plate and the circular housing, a fixed plate is provided at the bottom of the movable rod, a connecting rod is provided at the bottom of the fixed plate, a connecting rod is provided at the bottom of the connecting rod, and a placement rod is provided on one side wall of the connecting rod.

[0010] In a preferred embodiment of the present invention, a rotating rod is provided through the flip plate, and mounting bearings are provided at both ends of the rotating rod and are disposed on the inner wall of the mounting housing. A connecting plate is provided at the bottom of the flip plate, and a plurality of guide rails are provided at the bottom of the connecting plate. A mounting block is slidably disposed on each guide rail, and a cutting component is provided at the bottom of each mounting block.

[0011] In a preferred embodiment of the present invention, a drive plate is further provided on the rotating rod, a movable slide groove is provided above the drive plate, a sliding block is slidably provided on the movable slide groove, and the sliding block and the placement rod are hinged together.

[0012] In a preferred embodiment of the present invention, a guide groove is provided on the rotating rod, a guide slider is slidably disposed on the guide groove, and a guide sleeve is disposed on the guide slider. The guide sleeve is sleeved on the rotating rod, and a circular slide rail is disposed on the guide sleeve. A positioning plate is disposed on the circular slide rail.

[0013] In a preferred embodiment of the present invention, two telescopic rods are provided on one side wall of the positioning plate, and the other end of the telescopic rods is provided on the inner wall of the mounting housing. Multiple circular mounting cylinders are provided on the other side wall of the positioning plate, and a plug-in rod is inserted into the inner cavity of the circular mounting cylinder. The end of each plug-in rod away from the circular mounting cylinder is provided on the mounting block.

[0014] A method for crystallization drying and integrated energy-saving granulation of recycled PET bottle flakes, comprising the following steps: Step 1: The pre-made strip-shaped PET bottle flakes are transported through the conveying system, fed into the cooling system through the discharge system, cooled, and then introduced into the drying system before being transported to the inner cavity of the housing. Step 2: The motion control system controls the servo motor to rotate the worm gear, which in turn drives the fan system to operate. This, in conjunction with the heating components in the air outlet system, blows out hot air to dry the strip-shaped PET bottle flakes. Step 3: The worm gear meshes and drives the worm wheel and rotating rod to rotate. The cam pushes the moving plate and moving rod to move vertically. The placement rod drives the drive plate to drive the rotating rod to rotate, thereby realizing the flipping plate flipping. Step 4: When the rotating rod rotates, it drives the mounting block to move horizontally along the guide rail through the guide groove, positioning plate, and plug-in rod. Simultaneously, the flipping plate drives the cutting assembly to cut the strip-shaped PET bottle flakes into granules. Step 5: The cut PET granules are discharged through the discharge port of the housing, completing the integrated granulation process.

[0015] Compared with the prior art, the present invention has the following advantages: This invention utilizes the coordinated heating and drying components within the air outlet system, along with the continuous transmission of the conveying, discharging, and cooling systems, to achieve integrated crystallization drying and granulation, resulting in significant energy savings. A servo motor drives a worm gear, synchronously powering the fan system for air supply and drying, further reducing energy consumption by eliminating the need for an external power source. A tilting plate drives the cutting component for granulation, and guide grooves, guide sliders, positioning plates, and telescopic rods ensure horizontal movement of the cutting component after cutting, preventing PET strips from being obstructed and bent, guaranteeing smooth feeding at the inlet and discharging at the outlet. The control system provides precise regulation, and the layout of the housing ensures stable operation, effectively improving granulation efficiency and product quality.

[0016] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram: Figure 1 A three-dimensional structural diagram of an integrated energy-saving granulation system for the crystallization drying and recycling of PET bottle flakes; Figure 2 A schematic cross-sectional view of the mounting housing structure of an integrated energy-saving granulation system for the crystallization drying and recycling of PET bottle flakes; Figure 3 A schematic diagram of the internal structure of the mounting shell of an integrated energy-saving granulation system for the crystallization drying and recycling of PET bottle flakes; Figure 4 A schematic cross-sectional view of the housing structure of an integrated energy-saving granulation system for the crystallization drying and recycling of PET bottle flakes; Figure 5An integrated energy-saving granulation system for the crystallization, drying, and processing of recycled PET bottle flakes. Figure 4 Enlarged schematic diagram of the housing structure placed in the middle; Figure 6 A schematic diagram of the internal structure of the housing of an integrated energy-saving granulation system for the crystallization drying and recycling of PET bottle flakes; Figure 7 This is a top-view schematic diagram of the inner cavity of the housing of an integrated energy-saving granulation system for the crystallization drying and recycling of PET bottle flakes.

[0018] In the picture: 1. Conveying system; 11. Discharge system; 12. Cooling system; 13. Drying system; 14. Mounting plate; 15. Placement plate; 16. Air outlet system; 17. Mounting housing; 18. Support legs; 2. Workbench; 21. Control system; 22. Housing placement; 23. Feed inlet; 24. Circular housing; 25. Discharge outlet; 26. Guide block; 27. Transmission rod; 3. Servo motor; 31. Worm gear; 311. Fan system; 32. Worm wheel; 321. Rotating rod; 322. Cam; 33. Moving plate; 331. Moving rod; 332. Return spring; 333. Fixing plate; 334. Connecting rod; 335. Connecting rod; 336. Placement rod; 4. Flip plate; 41. Rotating rod; 411. Mounting bearing; 42. Drive plate; 421. Moving slide; 422. Sliding block; 44. Guide slide; 441. Guide sleeve; 442. Circular slide rail; 5. Positioning plate; 51. Telescopic rod; 52. Circular mounting cylinder; 521. Connecting rod; 6. Connecting plate; 61. Guide rail; 611. Mounting block; 612. Cutting assembly. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0020] like Figures 1 to 7As shown, an integrated energy-saving granulation system for crystallization drying of recycled PET bottle flakes includes a conveying system 1, a discharge system 11, a cooling system 12, a drying system 13, and a workbench 2. An air outlet system 16 is provided above the drying system 13, and a heating component is provided inside the air outlet system 16. A control system 21 and a placement housing 22 are provided above the workbench 2. An installation housing 17 is provided above the placement housing 22. The control system 12 is also provided on the workbench 2. A circular housing 24 is provided above the installation housing 17. An inlet 23 and a outlet 25 are respectively provided on both sides of the placement housing 22. A flipping plate 4 is provided inside the placement housing 22, and a cutting component 612 is provided at the bottom of the flipping plate 4. A driving component is provided inside the installation housing 17. The driving component is used to supply air to the air outlet system 16 and to drive the flipping plate 4 to flip. The flipping plate 4 can also move the cutting component 612 horizontally. This system utilizes the heating components within the air outlet system 16 in conjunction with the drying system 13, along with the continuous transmission of the conveying system 1, the discharge system 11, and the cooling system 12, to achieve integrated crystallization drying and granulation, resulting in significant energy savings. The servo motor 3 drives the worm gear 31, synchronously driving the fan system 311 for air supply and drying, and linking it with the worm wheel 32, eliminating the need for an additional power source and further reducing energy consumption. The flipping plate 4 drives the cutting component 612 for granulation, and through the guide chute 44, guide slider, positioning plate 5, and telescopic rod 51, the cutting component 612 moves horizontally after cutting, preventing the PET strip from being obstructed and bent, ensuring smooth feeding at the inlet 23 and discharging at the outlet 25. The control system 21 provides precise control, and the layout of the housing 22 and the mounting housing 17 ensures stable operation, effectively improving granulation efficiency and product quality.

[0021] like Figures 1 to 4 As shown in the specific embodiment, the conveying system 1, the discharging system 11, the cooling system 12, and the drying system 13 are arranged sequentially from left to right, and each is equipped with a support leg 18 at its bottom. Mounting plates 14 are arranged on both sides of the drying system 12, symmetrically arranged. A placement plate 14 is provided above each mounting plate 14, and an air outlet system 16 is installed on the placement plate 14. In this arrangement, the support legs 18 ensure the installation stability of each system and prevent displacement during operation; the symmetrically distributed mounting plates and placement plates provide a stable installation foundation for the air outlet system 16. Simultaneously, the systems are arranged sequentially along the horizontal direction, realizing continuous flow of PET bottle flakes from conveying, cooling, drying to granulation, reducing material transfer losses, and laying a structural foundation for integrated operations.

[0022] like Figures 1 to 4As shown, the drive component further includes a servo motor 3, which is mounted on the mounting housing 17. A worm gear 31 is mounted at the output end of the servo motor 3, movably passing through the mounting housing 17. A fan system 311 is mounted at the other end of the worm gear 31, and the fan system 311 extends through the air outlet system 16. In this configuration, a single servo motor 3 is used as the core power source, synchronously driving the fan system 311 via the worm gear 31. No additional air supply power device is required, achieving power reuse and energy saving. The design of the fan system 311 extending through the air outlet system 16 allows hot air to directly act on the drying area, reducing wind power loss and improving drying efficiency. The mounting housing 17 provides protection for the servo motor 3 and transmission components.

[0023] like Figures 1 to 4 As shown, furthermore, a worm gear 32 is meshed with one side wall of the worm 31, and a rotating rod 321 is inserted through the middle of the worm gear 32. The two ends of the rotating rod 321 are respectively rotatably mounted on the opposite side walls of the inner cavity of the mounting housing 17, and a cam 322 is also provided on the rotating rod 321. In this configuration, the worm 31 and the worm gear 32 constitute a reduction transmission mechanism, which not only ensures the smoothness and accuracy of power transmission, but also converts the high-speed rotation of the servo motor into the appropriate speed of the rotating rod 321. The rotating mounting method at both ends of the rotating rod 321 reduces frictional resistance, and the cam 322 realizes the conversion of rotational motion into linear reciprocating motion, providing power for the subsequent flipping of the flipping plate 4, and realizing the synchronous output of drying and cutting power.

[0024] like Figures 1 to 3 As shown, further, a movable plate 33 is fitted to the bottom of the cam 322, and a movable rod 331 is provided at the bottom of the movable plate 33. The movable rod 331 movably passes through the circular housing 24. A return spring 332 is sleeved on the outside of the movable rod 331. The two ends of the reciprocating spring 332 are respectively provided on the opposite side walls of the movable plate 33 and the circular housing 24. A fixed plate 333 is provided at the bottom of the movable rod 331. A connecting rod 334 is provided at the bottom of the fixed plate 333. A connecting rod 335 is provided at the bottom of the connecting rod 334. A placement rod 336 is provided on one side wall of the connecting rod 335. In this configuration, the return spring 332, in conjunction with the cam 322, enables the automatic reciprocating reset of the moving plate 33, eliminating the need for an additional drive structure and simplifying the design. The circular housing 24 serves as a guide and limiter for the moving rod 331, ensuring vertical movement accuracy. The fixed plate 333, connecting rod 334, and connecting rod 335 form a multi-stage transmission link, smoothly transmitting the linear motion of the moving plate 33 to the placement rod 336, ensuring the continuity and reliability of power transmission.

[0025] Example 2: The difference between the above embodiments and this embodiment is that: Figures 1 to 7As shown, an integrated energy-saving granulation system for crystallization drying of recycled PET bottle flakes is provided. A rotating rod 41 is provided through the rotating plate 4. The rotating rod 41 is provided with mounting bearings 411 at both ends and the mounting bearings 411 are provided on the inner wall of the mounting housing 17. A connecting plate 6 is provided at the bottom of the rotating plate 4. Multiple guide rails 61 are provided at the bottom of the connecting plate 6. A mounting block 611 is slidably provided on each guide rail 61. A cutting component 612 is provided at the bottom of each mounting block 611.

[0026] like Figures 1 to 7 As shown, in a specific embodiment, a drive plate 42 is also provided on the rotating rod 41, and a movable slide groove 421 is provided above the drive plate 42. A sliding block 422 is slidably disposed on the movable slide groove 421, and the sliding block 422 and the placement rod 336 are hinged together. In this configuration, the sliding engagement of the movable slide groove 421 and the sliding block 422, combined with the hinged connection, enables the flexible conversion of the vertical reciprocating motion of the placement rod 336 into the rotational motion of the drive plate 42, avoiding jamming or stress concentration during transmission. This structure adapts to the movement trajectory of the placement rod 336, ensuring the stability of the rotation angle of the rotating rod 41, thereby ensuring the precise and controllable flipping action of the flipping plate 4.

[0027] like Figures 1 to 7 As shown, further, a guide groove 44 is provided on the rotating rod 41, and a guide slider is slidably mounted on the guide groove 44. A guide sleeve 441 is provided on the guide slider, and the guide sleeve 441 is fitted onto the rotating rod 41. A circular slide rail 442 is provided on the guide sleeve 441, and a positioning plate 5 is provided on the circular slide rail 442. In this configuration, the cooperation between the guide groove 44 and the guide slider converts the rotational motion of the rotating rod 41 into the horizontal linear motion of the guide sleeve 441, realizing a secondary conversion of the power form; the circular slide rail 442 ensures the stability of the positioning plate 5 during horizontal movement, avoids deviation, and provides precise guidance for the subsequent synchronous adjustment of the mounting block 611.

[0028] like Figures 1 to 7As shown, further, two telescopic rods 51 are provided on one side wall of the positioning plate 5, and the other end of the telescopic rods 51 is provided on the inner wall of the mounting housing 17. Multiple circular mounting cylinders 52 are provided on the other side wall of the positioning plate 5, and insertion rods 521 are inserted into the inner cavity of the circular mounting cylinders 52. The end of each insertion rod 521 away from the circular mounting cylinder 52 is provided on the mounting block 611. In this configuration, the telescopic rods 51 play a guiding and supporting role for the positioning plate 5, ensuring the linear accuracy of its horizontal movement, while buffering the impact force during the movement. The insertion and cooperation of the circular mounting cylinders and the insertion rods 521 realizes the linkage connection between the positioning plate 5 and multiple mounting blocks 611, which can synchronously drive multiple sets of cutting components 612 to move horizontally. Moreover, the insertion structure has a certain amount of flexibility to adapt to the fine adjustment needs of the cutting components and avoid component damage caused by hard connection.

[0029] Example 3: This invention also discloses a method for the crystallization drying and integrated energy-saving granulation of recycled PET bottle flakes, the steps of which are as follows: Step 1: The pre-made strip-shaped PET bottle flakes are conveyed through the conveying system 1, fed into the cooling system 12 through the discharge system 11, cooled, and then introduced into the drying system 13, and then conveyed to the inner cavity of the housing 22. Step 2: The motion control system 21 controls the servo motor 3 to run, which drives the worm gear 31 to rotate, and drives the fan system 311 to run. In conjunction with the heating component in the air outlet system 16, hot air is blown out to dry the strip-shaped PET bottle flakes. Step 3: The worm gear 31 engages and drives the worm wheel 32 and the rotating rod 321 to rotate. The cam 322 pushes the moving plate 33 and the moving rod 331 to move vertically. The placement rod 336 drives the drive plate 42 to drive the rotating rod 41 to rotate, thereby realizing the flipping plate 4 flipping. Step 4: When the rotating rod 41 rotates, it drives the mounting block 611 to move horizontally along the guide rail 61 via the guide slide 44, positioning plate 5, and plug rod 521. Simultaneously, the flip plate 4 drives the cutting component 612 to cut the strip-shaped PET bottle flakes into granules. Step 5: The cut PET granules are discharged through the discharge port 25 of the housing 22, completing the integrated granulation process.

[0030] The implementation principle of the integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes of the present invention is as follows: First, the workers transport the strip-shaped PET bottle flakes from the conveying system 1, and then through the discharge system 11 into the cooling system 12 for cooling. After cooling, they can be dried through the drying system 13, and then transported to the inner cavity of the placement shell 22. {The specific process of forming the PET bottle flakes into strips, as well as the conveying system 1, the discharge system 11, and the cooling system 12, are existing technologies. When entering the placement shell 22, the PET bottle flakes are formed into strips and transported through the feeding port 23 by the pushing unit set in the feeding port 23 (while the conveying system 1 includes a screw extruder, etc.)}. At the same time, the staff controls the operation of the servo motor 3, so the servo motor 3 can drive the worm gear 31 to rotate, which in turn drives the fan system 311 to rotate. This allows the fan system 311 to blow out hot air through the heating component (which is a PTC heater) installed in the air outlet system 311, thus enabling the conveyed PET bottle flakes to be dried. Simultaneously, when the worm gear 31 rotates, it can also drive the worm wheel 32 to rotate. When the worm wheel 32 rotates, it can drive the rotating rod 321 to rotate, thus allowing the cam 322 to rotate. When the cam 322 rotates, it can push the moving plate 33 to move vertically with the assistance of the moving rod 331 and the circular housing 24. When the moving rod 331 moves vertically, it can drive the fixed plate 333, connecting rod 334, connecting rod 335 and placement rod 336 to move vertically downward. When the placement rod 336 moves vertically downward, it can press the drive plate 42 to rotate with the assistance of the rotating rod 41 and the mounting bearing 441. When the rotating rod 41 rotates, it can drive the flipping plate 4 to rotate. When the flipping plate 4 rotates, it can drive the cutting assembly 612 to rotate, thereby allowing the cutting assembly 612 to cut the conveyed PET bottle flakes into granules. Meanwhile, when the rotating rod 411 rotates, it can also drive the guide sleeve 441 to move horizontally with the assistance of the positioning plate 5 and the telescopic rod 51 through the guide groove 44 and the guide slider. When the positioning plate 5 moves horizontally, it can drive the circular mounting cylinder 52 to move until the circular mounting cylinder 52 moves to a certain position, which can drive the plug rod 521 to move. Therefore, the plug rod 521 can drive the corresponding mounting block 611 to move horizontally with the assistance of the guide rail 61. Thus, the vertical cutting component 612 at the bottom of the mounting block 611, which is far away from the transmission system 1, can move horizontally to one side after the PET bottle sheet strips are cut, thereby preventing the PET bottle sheet strips from bending due to the obstruction of the cutting component 612 during the transmission process.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A crystallization drying and integrated energy-saving granulation system for recycled PET bottle flakes, characterized in that, It includes a conveying system (1), a discharge system (11), a cooling system (12), a drying system (13), and a workbench (2). An air outlet system (16) is provided above the drying system (13), and a heating component is provided inside the air outlet system (16). A control system (21) and a placement housing (22) are provided above the workbench (2). An installation housing (17) is provided above the placement housing (22). The control system (12) is also provided on the workbench (2), and a circular housing (24) is provided above the installation housing (17). The placement housing (22) is provided with a feed inlet (23) and a discharge outlet (25) on both sides respectively. The inner cavity of the placement housing (22) is also provided with a flip plate (4), and a cutting component (612) is provided at the bottom of the flip plate (4). The mounting housing (17) is provided with a drive assembly, which is used to supply air to the air supply system (16). The drive assembly is also used to drive the flip plate (4) to flip. The flip plate (4) can also allow the cutting assembly (612) to move horizontally.

2. The integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes according to claim 1, characterized in that, The conveying system (1), the discharge system (11), the cooling system (12) and the drying system (13) are distributed from left to right in sequence, and each of them is provided with a support leg (18) at the bottom. The drying system (12) is provided with mounting plates (14) on both sides. The two mounting plates (14) are symmetrical to each other. Each of the two mounting plates (14) is provided with a placement plate (14) above it, and an air outlet system (16) is provided on the placement plate (14).

3. The integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes according to claim 1, characterized in that, The drive assembly includes a servo motor (3), which is mounted on the mounting housing (17). A worm gear (31) is provided at the output end of the servo motor (3), which moves through the mounting housing (17). A fan system (311) is provided at the other end of the worm gear (31), and the fan system (311) passes through the air outlet system (16).

4. The integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes according to claim 3, characterized in that, A worm wheel (32) is meshed on one side wall of the worm (31), and a rotating rod (321) is provided through the middle of the worm wheel (32). The two ends of the rotating rod (321) are respectively rotatably arranged on the opposite side walls of the inner cavity of the mounting housing (17). A cam (322) is also provided on the rotating rod (321).

5. The integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes according to claim 4, characterized in that, A movable plate (33) is fitted to the bottom of the cam (322), and a movable rod (331) is provided at the bottom of the movable plate (33). The movable rod (331) moves through the circular shell (24). A return spring (332) is sleeved on the outside of the movable rod (331). The two ends of the reciprocating spring (332) are respectively provided on the opposite side wall of the movable plate (33) and the circular shell (24). A fixed plate (333) is provided at the bottom of the movable rod (331), and a connecting rod (334) is provided at the bottom of the fixed plate (333). A connecting rod (335) is provided at the bottom of the connecting rod (334), and a placement rod (336) is provided on one side wall of the connecting rod (335).

6. The integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes according to claim 1, characterized in that, A rotating rod (41) is provided through the flip plate (4). The rotating rod (41) has mounting bearings (411) at both ends. The mounting bearings (411) are located on the inner wall of the mounting housing (17). A connecting plate (6) is provided at the bottom of the flip plate (4). A plurality of guide rails (61) are provided at the bottom of the connecting plate (6). A mounting block (611) is slidably provided on each guide rail (61). A cutting component (612) is provided at the bottom of each mounting block (611).

7. The integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes according to claim 6, characterized in that, A drive plate (42) is also provided on the rotating rod (41). A movable slide groove (421) is provided above the drive plate (42). A sliding block (422) is slidably provided on the movable slide groove (421). The sliding block (422) and the placement rod (336) are hinged together.

8. The integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes according to claim 6, characterized in that, The rotating rod (41) is provided with a guide groove (44), a guide slider is slidably provided on the guide groove (44), and a guide sleeve (441) is provided on the guide slider. The guide sleeve (441) is sleeved on the rotating rod (41), and a circular slide rail (442) is provided on the guide sleeve (441). A positioning plate (5) is provided on the circular slide rail (442).

9. The integrated energy-saving granulation system for crystallization drying and recycling PET bottle flakes according to claim 8, characterized in that, Two telescopic rods (51) are provided on one side wall of the positioning plate (5), and the other end of the telescopic rods (51) is provided on the inner wall of the mounting housing (17). Multiple circular mounting cylinders (52) are provided on the other side wall of the positioning plate (5), and a plug rod (521) is inserted into the inner cavity of the circular mounting cylinder (52). The end of each plug rod (521) away from the circular mounting cylinder (52) is provided on the mounting block (611).

10. A method for integrated energy-saving granulation and crystallization drying of recycled PET bottle flakes, characterized in that, The crystallization drying and integrated energy-saving granulation system for recycled PET bottle flakes, as described in any one of claims 1 to 9, comprises the following steps: Step 1: The pre-made strip-shaped PET bottle flakes are transported through the conveying system (1), fed into the cooling system (12) through the discharge system (11) for cooling, and then introduced into the drying system (13) and then transported to the inner cavity of the placement shell (22); Step 2: The dynamic control system (21) controls the servo motor (3) to run, which drives the worm gear (31) to rotate, drives the fan system (311) to run, and cooperates with the heating component in the air outlet system (16) to blow out hot air to dry the strip-shaped PET bottle flakes; Step 3: The worm gear (31) meshes and drives the worm wheel (32) and the rotating rod (321) to rotate. The cam (322) pushes the moving plate (33) and the moving rod (331) to move vertically. The placement rod (336) drives the drive plate (42) to drive the rotating rod (41) to rotate, thereby realizing the flipping plate (4) flipping. Step 4: When the rotating rod (41) rotates, it drives the mounting block (611) to move horizontally along the guide rail (61) via the guide slide (44), positioning plate (5), and plug rod (521). The flip plate (4) simultaneously drives the cutting component (612) to cut the strip-shaped PET bottle flakes into granules. Step 5: The cut PET granules are discharged through the discharge port (25) of the housing (22), completing the integrated granulation process.

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