Granulating device for recycling waste plastics

Abstract

The invention relates to the technical field of pelletizers, in particular to a pelletizing device for waste plastic recycling. The device comprises a mounting table body, a crushing shell is arranged at the top of one side of the mounting table body, a crushing assembly is arranged in the crushing shell, a pair of fixing plates are symmetrically arranged on the two sides of the bottom of the mounting table body, a driving assembly is arranged between the two fixing plates, a lifting and transferring assembly is arranged on the mounting table body, and the lifting and transferring assembly is in driving connection with the driving assembly. A plurality of ultrasonic cleaning pools are arranged on the mounting table body at equal intervals, connecting supporting rods are arranged at the four corners of the bottom of the mounting table body, drying cylinders are arranged at the bottoms of the connecting supporting rods at the same time, and turning propelling assemblies are arranged in the drying cylinders. A plurality of ultrasonic cleaning pools are arranged, silt and dust are removed at the first section, oil stain residues are removed at the second section, fine impurities are deeply purified at the third section, a gradient purification effect is formed, the material impurity rate is greatly reduced, the pretreated material impurities are few, subsequent granulation finished products are uniform in color and high in purity, and the production requirements of high-standard regenerated plastics are met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of a granulator, in particular to a granulating device for recycling waste plastics. BACKGROUND

[0002] In the actual process of recycling waste plastics, the surface and interior of the material after being broken into pieces are usually attached with mud, oil stains, metal impurities and residual pollutants. In order to ensure the subsequent granulation quality, the industry generally needs to carry out pretreatment processes such as cleaning, drying and sorting on the material after being broken into pieces to remove impurities and avoid the pollution being fused into the interior of the particles after being plasticized at high temperature in the granulation process, so as to ensure the purity and mechanical properties of the regenerated particles.

[0003] The prior art with the publication number CN118721531A discloses a granulating device and method for recycling waste plastics, and relates to the technical field of plastic production equipment, comprising a base, a feeding port is fixedly installed on the inner wall of the base, water is arranged in the interior of the base, a rotary motor one is arranged on the rear side of the base, a rotary motor two is arranged on the right side of the feeding port, a rotary motor three is arranged on the rear side of the feeding port, a crushing device is arranged in the interior of the feeding port, a flotation device is arranged in the interior of the base, and a granulating device is arranged below the base; wherein the crushing device comprises rotating rollers one and two, rotating shafts one, two and three, a breaking piece knife and a pushing plate. Through the crushing device, the originally larger waste plastics or particles can be finely divided into smaller pieces, and the surface area of the small pieces is increased, which is beneficial to subsequent processing and treatment.

[0004] However, in the technical solution, the material is directly introduced into the granulating device for plasticizing and extruding after being crushed, and no independent cleaning and impurity separation unit is arranged. This leads to the fact that the mud, oil stains and other pollutants attached to the surface of the material after being crushed cannot be effectively removed, and the pollutants will be heated and plasticized together with the material during the granulation operation, and finally mixed into the finished particles. This not only seriously affects the purity, color and physical properties of the plastic particles, but also may cause equipment wear or product defects in subsequent product processing, and it is difficult to meet the production requirements of high-quality regenerated plastics. SUMMARY

[0005] The application aims to solve the above-mentioned defects by providing a granulating device for recycling waste plastics, which is reasonable in design.

[0006] In order to achieve the above object, the present application provides the following technical scheme: it includes installation platform body, the installation platform body one side top is provided with broken shell, the broken shell is provided with broken assembly, the bottom of the installation platform body both sides symmetry is provided with a pair of fixed plate, two the fixed plate between setting has drive assembly, the installation platform body on setting has lifting transfer assembly, the lifting transfer assembly with drive assembly drive connection, the installation platform body on equal interval setting has several ultrasonic cleaning pool, the bottom of the installation platform body four corners all is provided with connecting branch, the bottom of several connecting branch is provided with drying cylinder simultaneously, the drying cylinder is provided with turning propulsion assembly.

[0007] Preferably, the broken assembly includes a pair of rotating shafts, the two rotating shafts are symmetrically and movably arranged in the broken shell, the same end of the two rotating shafts is provided with a gear, and the two gears are meshedly connected, a plurality of broken cutter wheels are equally spaced on the two rotating shafts, and the broken cutter wheels on the two rotating shafts are alternately arranged, one side of the broken shell is provided with a mounting frame one, the mounting frame one is provided with a motor one, and the transmission end of the motor one is connected with one end of one of the rotating shafts away from the gear through a shaft coupling.

[0008] Preferably, one of the fixed plates is provided with a mounting frame three, the drive assembly includes a lead screw two, the lead screw two is movably arranged between the two fixed plates through a pair of bearing seats two, the mounting frame three is provided with a motor three, one end of the motor three is connected with one end of the lead screw two through a shaft coupling.

[0009] Preferably, the lifting transfer assembly includes an inverted L-shaped plate arranged at the bottom of the installation platform body, a pair of sliding grooves are formed in the bottom of the installation platform body, sliding rails are arranged on the top of the inverted L-shaped plate corresponding to the positions of the two sliding grooves, and the two sliding rails are movably arranged in the two sliding grooves respectively, a drive cylinder is arranged at the bottom of the inverted L-shaped plate, a lead screw nut one is arranged in the drive cylinder, the lead screw nut one is threadedly arranged on the lead screw two, a pair of supports are symmetrically arranged on the top of the two sides of the inverted L-shaped plate, a lead screw one is movably arranged in each support through a pair of bearing seats one, a pair of lifting speed reducers are symmetrically arranged on the bottom of the two sides of the inverted L-shaped plate, the transmission end of each lifting speed reducer is connected with the bottom end of the lead screw one through a shaft coupling, the output ends of the two lifting speed reducers are connected through a connecting shaft, a motor two is arranged on one side of the inverted L-shaped plate, and the transmission end of the motor two is connected with the input end of one of the lifting speed reducers through a shaft coupling.

[0010] Preferably, the top of the installation platform body is provided with a material receiving mesh shell, the top of the two sides of the material receiving mesh shell is symmetrically provided with a vertical plate, the outer side of the vertical plate is provided with a shaft rod, the shaft rod is movably arranged in a driving plate, the driving plate is arranged in a support, and a lead screw nut two is arranged on the driving plate, the lead screw nut two is threadedly arranged on the lead screw one.

[0011] Preferably, one side of the drying cylinder is provided with a mounting frame two, the top of the side of the drying cylinder away from the crushing shell is provided with a feeding port, the bottom of the side of the drying cylinder away from the feeding port is provided with a discharging port, the wall of the drying cylinder is provided with a spiral heating wire, and the top of the drying cylinder is provided with a plurality of dehumidification fans.

[0012] Preferably, the turnover propulsion assembly comprises a rotating rod movably arranged in the drying cylinder through a pair of bearing seats three, a motor four is arranged on the mounting frame two, a transmission end of the motor four is connected with one end of the rotating rod through a shaft coupling, a spiral pushing blade is arranged on the rotating rod, and a plurality of turnover plates are arranged on the spiral pushing blade.

[0013] After the above structure is adopted, the beneficial effects of the application are as follows:

[0014] 1. The application constructs a segmented progressive cleaning process by arranging a plurality of ultrasonic cleaning pools, the first section removes silt and dust, the second section removes oil stains and residues, and the third section deeply purifies fine impurities, thereby forming a gradient purification effect, greatly reducing the impurity rate of the material, and the pretreated material has less impurities, the subsequent granulation product has uniform color and high purity, and meets the production demand of high-standard regenerated plastic.

[0015] 2. The application realizes process connection by arranging a lifting and transferring assembly and linkage with each mechanism, the crushed material directly falls into the receiving net shell, the driving assembly drives the receiving net shell to automatically transfer to the cleaning and drying area, thereby replacing manual carrying, reducing the transfer time and labor cost, the lifting and transferring assembly is double-driven in lifting and translation, can be accurately positioned to any cleaning pool, and directly feeds the material to the drying cylinder after cleaning, thereby avoiding secondary pollution, integrating the dispersed processes into a continuous process, shortening the overall processing period, and adapting to large-scale production.

[0016] 3. The application cooperates the spiral pushing blade in the drying cylinder with the turnover plate, the turnover plate continuously turns the material when pushing the material, thereby avoiding uneven heating caused by accumulation, ensuring that the material uniformly contacts heat, at the same time, the dehumidification fan 111 at the top of the drying cylinder timely discharges moisture, accelerates evaporation of water, ensures complete drying, prevents bubbles and burnt paste caused by extrusion, avoids excessive drying to cause degradation of the material, improves the drying efficiency, and reduces energy consumption and material loss. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the application;

[0018] Figure 2 It is a whole bottom view structure schematic view of the application;

[0019] Figure 3 It is a mounting table body structure schematic view of the application;

[0020] Figure 4The schematic diagram of the crushing assembly structure of the present application;

[0021] Figure 5 The schematic diagram of the lifting and transferring assembly structure of the present application;

[0022] Figure 6 The schematic diagram of the bottom view of the lifting and transferring assembly structure of the present application;

[0023] Figure 7 The schematic diagram of the material receiving net shell unfolding of the present application;

[0024] Figure 8 The schematic diagram of the lifting and deceleration machine assembly of the present application;

[0025] Figure 9 The schematic diagram of the driving assembly structure of the present application;

[0026] Figure 10 The schematic diagram of the present application when the whole is cut open and the drying cylinder is shown;

[0027] Figure 11 The schematic diagram of the turning and pushing assembly structure of the present application.

[0028] Explanation of the reference signs:

[0029] mounting table body 1, connecting support rod 10, drying cylinder 11, crushing shell 12, drying cylinder 11, crushing shell 12, mounting rack one 13, mounting rack two 14, feeding port 15, discharging port 16, fixed plate 17, mounting rack three 18, chute 19, spiral heating wire 110, dehumidification fan 111, crushing assembly 2, rotating shaft 20, gear 21, crushing cutter wheel 22, motor one 23, coupling 3, ultrasonic cleaning pool 4, lifting and transferring assembly 5, inverted L-shaped plate 50, sliding rail 51, driving cylinder 52, screw nut one 53, support 54, bearing seat one 55, lead screw one 56, lifting and deceleration machine 57, connecting shaft 58, motor two 59, material receiving net shell 510, vertical plate 511, shaft rod 512, driving plate 513, screw nut two 514, driving assembly 6, lead screw two 60, motor three 61, bearing seat two 62, turning and pushing assembly 7, motor four 70, rotating rod 71, spiral pushing blade 72, turning plate 73, bearing seat three 74. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] As Figure 1 - Figure 11As shown, the application proposes a granulating device for waste plastic recycling, which mainly consists of five parts: a mounting table body 1, a crushing mechanism, a lifting and transferring mechanism, an ultrasonic cleaning mechanism and a drying mechanism.

[0032] The mounting table body 1 serves as the main support structure of the device, and a crushing shell 12 is fixedly installed on the top of one side of the mounting table body 1. A crushing assembly 2 for preliminary crushing of materials is movably assembled inside the crushing shell 12. A pair of fixed plates 17 is fixedly arranged on the bottom of the mounting table body 1, and a driving assembly 6 is movably connected between the two fixed plates 17. A plurality of ultrasonic cleaning pools 4 are embedded in the length direction of the table top of the mounting table body 1 at equal intervals, which are used for multi-stage cleaning of the crushed materials. A connecting rod 10 is vertically welded at each corner of the bottom of the mounting table body 1, and a drying cylinder 11 is fixedly connected to the bottom of the four connecting rods 10 through flanges. A turnover and advancing assembly 7 for material conveying and turnover is movably arranged inside the drying cylinder 11.

[0033] The crushing assembly 2 comprises a pair of symmetrically arranged shafts 20, which are movably connected to the front and rear walls of the crushing shell 12 through bearings. The same end of the two shafts 20 is fixedly provided with a gear 21, and the two gears 21 are in meshing state. A plurality of crushing cutter wheels 22 are fixedly arranged on each shaft 20 at equal intervals along the axial direction through bolts, and the crushing cutter wheels 22 on the two shafts 20 are alternately arranged.

[0034] The side of the crushing shell 12 away from the gear 21 is fixedly provided with a mounting bracket one 13, and a motor one 23 is fixedly arranged on the mounting bracket one 13. The transmission end of the motor one 23 is coaxially fixedly connected to the end of one of the shafts 20 away from the gear 21 through a shaft coupling 3, thereby constituting the driving source of the crushing assembly 2.

[0035] A pair of fixed plates 17 is symmetrically welded on the bottom of the mounting table body 1 along the length direction. The outside of one of the fixed plates 17 is fixedly provided with a mounting bracket three 18. The core component of the driving assembly 6, i.e., a lead screw two 60, is movably arranged through a pair of bearing seats two 62. The two bearing seats two 62 are respectively fixed to the opposite inner sides of the two fixed plates 17. The two ends of the lead screw two 60 are respectively inserted into the inner rings of the corresponding bearing seats two 62 and fixed. A motor three 61 is fixedly arranged on the mounting bracket three 18. The transmission end of the motor three 61 is coaxially fixedly connected to one end of the lead screw two 60 through a shaft coupling 3, thereby realizing the rotary driving of the lead screw two 60.

[0036] The inverted L-shaped plate 50 of the lifting and transferring assembly 5 is arranged at the bottom of the mounting table body 1, a pair of parallel sliding grooves 19 are formed in the bottom of the mounting table body 1 along the length direction, two sliding rails 51 are fixed on the top of the inverted L-shaped plate 50 corresponding to the positions of the sliding grooves 19 through bolts, the sliding rails 51 are in clearance fit with the sliding grooves 19, the sliding and guiding of the inverted L-shaped plate 50 are realized, the driving cylinders 52 are vertically welded at the bottom of the inverted L-shaped plate 50, the female nut one 53 is embedded in the driving cylinders 52 through bolts, the female nut one 53 is in screw fit with the lead screw two 60 of the driving assembly 6, and the translation driving structure of the inverted L-shaped plate 50 is formed; the supports 54 are symmetrically welded at the top of the two sides of the inverted L-shaped plate 50, the bearing seats one 55 are fixed on the upper and lower ends of each support 54 through bolts, the lead screw one 56 is movably supported between the two bearing seats one 55 in the same support 54, and the two ends of the lead screw one 56 are respectively inserted into the bearing inner rings of the corresponding bearing seats one 55 and fixed;

[0037] A pair of lifting speed reducers 57 are fixed on the bottom of the two sides of the inverted L-shaped plate 50, the bottom ends of the corresponding lead screw one 56 are coaxially fixed and connected with the output ends of the two lifting speed reducers 57 through the couplings 3; the input ends of the two lifting speed reducers 57 are connected through the connecting shaft 58 (the two ends of the connecting shaft 58 are connected with the input ends of the speed reducers through the couplings 3), and the linkage is realized; the motor two 59 is fixed on one side of the inverted L-shaped plate 50 through bolts, the transmission end of the motor two 59 is coaxially fixed and connected with the input end of one of the lifting speed reducers 57 through the coupling 3, and the rotation driving source of the lead screw one 56 is formed;

[0038] The receiving mesh shell 510 is arranged at the top of the mounting table body 1, the vertical plates 511 are symmetrically welded at the top of the two sides of the receiving mesh shell 510, the shaft rods 512 are rotatably connected with the outer middle parts of each vertical plate 511 through bearings, the driving plates 513 are slidably arranged in the inner sides of each support 54 of the lifting and transferring assembly 5, the perforations are formed in the driving plates 513 corresponding to the positions of the shaft rods 512, and the ends, away from the vertical plates 511, of the shaft rods 512 are movably inserted into the perforations (and can rotate around the axes thereof); the female nut two 514 is fixedly embedded in the middle part of the driving plate 513, the female nut two 514 is in screw fit with the corresponding lead screw one 56, and the lifting and driving of the receiving mesh shell 510 are realized;

[0039] The connecting struts 10 are vertically welded at the bottom of the mounting table body 1, the drying cylinder 11 is fixedly connected to the bottom of the four connecting struts 10, the feeding port 15 is formed at the top of the side, away from the crushing shell 12, of the drying cylinder 11, and the discharging port 16 is formed at the bottom of the side, away from the feeding port 15, of the drying cylinder 11; the helical heating wires 110 are embedded in the inner wall of the drying cylinder 11 along the circumferential direction, and the dehumidification fans 111 are fixed on the top of the drying cylinder 11 along the length direction at equal intervals through bolts (the fan air outlets face upwards and are communicated with the interior of the drying cylinder 11);

[0040] The drying cylinder 11 is fixed with a mounting frame two 14 on the side close to the crushing shell 12, and a turnover propelling assembly 7 is movably arranged inside the drying cylinder 11, the rotating rod 71 of the assembly is movably supported through a pair of bearing seats three 74, the two bearing seats three 74 are respectively fixed on the inner sides of the two end plates of the drying cylinder 11 through bolts, and the two ends of the rotating rod 71 penetrate into the inner rings of the corresponding bearing seats three 74 and are fixed; the mounting frame two 14 is fixed with a motor four 70 through bolts, the transmission end of the motor four 70 is coaxially fixedly connected with one end of the rotating rod 71 through a shaft coupling 3; the rotating rod 71 is fixed with a spiral propelling blade 72 through bolts in the axial direction, and a plurality of turnover plates 73 are welded on the spiral propelling blade 72.

[0041] In use, the following stages are divided:

[0042] 1. Crushing stage: firstly, the recycled waste plastics are put into the crushing shell 12, the motor one 23 is started, the motor one 23 drives one of the rotating shafts 20 to rotate through the shaft coupling 3, since the gears 21 fixed on the same end of the two rotating shafts 20 are meshed with each other, the two rotating shafts 20 synchronously and reversely rotate, and the plurality of crushing cutter wheels 22 alternately arranged on the rotating shafts 20 rotate at high speed with the rotating shafts 20, so as to shear and crush the input waste plastics, and to divide the large plastics into small pieces with larger surface area, and the crushed materials directly fall into the receiving mesh shell 510 below to complete the preliminary crushing work;

[0043] 2. Lifting, transferring and multi-stage cleaning stage: after the crushing work is completed, the controller controls the motor three 61 to be started, the motor three 61 drives the lead screw two 60 to rotate, the lead screw two 60 drives the inverted L-shaped plate 50 to move along the sliding groove 19 and the sliding rail 51 at the bottom of the mounting table body 1 in guidance through the thread cooperation with the nut one 53, and moves towards the ultrasonic cleaning pool 4, when the receiving mesh shell 510 is completely moved out from the bottom of the crushing shell 12, the controller starts the motor two 59, the motor two 59 drives one of the lifting speed reducers 57, drives the two lifting speed reducers 57 to synchronously operate through the connecting shaft 58, and then drives the two lead screws one 56 to synchronously rotate, the lead screws one 56 drive the driving plate 513 to drive the receiving mesh shell 510 to move upwards along the support 54 through the thread cooperation with the nut two 514, until the height of the receiving mesh shell 510 exceeds the top of the ultrasonic cleaning pool 4;

[0044] Subsequently, motor 3 61 continues to drive the inverted L-shaped plate 50 to move. When the receiving mesh shell 510 moves to the top of the first ultrasonic cleaning tank 4, motor 2 59 reverses and drives the lead screw 1 56 to rotate in the opposite direction through the lifting reducer 57. The receiving mesh shell 510 then descends until the material inside the mesh shell is partially immersed in the cleaning solution of the ultrasonic cleaning tank 4 (no need for complete immersion). At this time, the first ultrasonic cleaning tank 4 is activated, using ultrasonic vibration to remove mud, sand and light impurities attached to the surface of the material. After the first cleaning is completed, the above lifting, transfer and descent steps are repeated to move the receiving mesh shell 510 to the second and third ultrasonic cleaning tanks 4 for secondary and tertiary cleaning. Through multi-stage cleaning, oil stains, residual pollutants and other contaminants on the surface of the material are gradually removed to ensure the cleanliness of the material.

[0045] 3. Drying and granulation pre-conveying stage: After the final cleaning of the third ultrasonic cleaning tank 4 is completed, the motor 61 continues to drive the inverted L-shaped plate 50 to move the receiving mesh shell 510 to the tail of the mounting platform 1. At this time, the operator can lift the bottom of the receiving mesh shell 510 through the equipment to tilt the receiving mesh shell 510 and pour the cleaned wet material into the feed inlet 15 of the drying cylinder 11 (the spiral heating wire 110 in the wall of the drying cylinder 11 needs to be started in advance to preheat the inside of the drying cylinder 11).

[0046] After the material enters the drying cylinder 11, the controller starts motor 4 70 (motor 4 70 is fixed on mounting bracket 2 14 on one side of the drying cylinder 11). Motor 4 70 drives the rotating rod 71 inside the drying cylinder 11 (rotating rod 71 is movably supported by a pair of bearing seats 3 74) to rotate through coupling 3. The spiral pusher blade 72 fixed on the rotating rod 71 rotates with the rotating rod 71, pushing the material to move slowly forward along the length of the drying cylinder 11. At the same time, several flipping plates 73 set on the spiral pusher blade 72 continuously flip the material during rotation, increasing the contact area between the material and the hot air inside the drying cylinder 11 and accelerating moisture evaporation. The moisture generated by evaporation is promptly discharged through several exhaust fans 111 set at the top of the drying cylinder 11, improving drying efficiency. Finally, the completely dried material, pushed by the spiral pusher blade 72, falls from the discharge port 16 of the drying cylinder 11 into the subsequent extruder for plasticizing and granulation, completing the entire pretreatment process of waste plastic. It should be understood that the above specific embodiments of the invention are only for illustrative or explanatory purposes.

[0047] The principles of the invention are explained, but not limited thereto. Therefore, without departing from the spirit of the invention and

[0048] Any modifications, equivalent substitutions, improvements, etc., made within the scope of the invention shall be included in the invention.

[0049] Within the scope of protection. Furthermore, the appended claims are intended to cover any invention falling within the scope of the appended claims.

[0050] all changes and modifications within the scope and range of equivalents of such claims and embodiments.

Claims

1. A granulation device for recycling waste plastics, comprising: The mounting platform (1) has a crushing shell (12) on one side of its top. The crushing shell (12) contains a crushing component (2). A pair of fixing plates (17) are symmetrically arranged on both sides of the bottom of the mounting platform (1). A driving component (6) is arranged between the two fixing plates (17). A lifting and transferring component (5) is arranged on the mounting platform (1). The lifting and transferring component (5) is driven and connected to the driving component (6). Several ultrasonic cleaning pools (4) are evenly spaced on the mounting platform (1). Connecting support rods (10) are arranged on the four corners of the bottom of the mounting platform (1). A drying cylinder (11) is arranged at the bottom of several connecting support rods (10). A turning and pushing component (7) is arranged inside the drying cylinder (11).

2. The granulation device for recycling waste plastics according to claim 1, characterized in that: The crushing assembly (2) includes a pair of rotating shafts (20). The two rotating shafts (20) are symmetrically and movably arranged in the crushing housing (12). Gears (21) are provided at the same end of both rotating shafts (20), and the two gears (21) are meshed together. Several crushing cutter wheels (22) are evenly spaced on both rotating shafts (20), and the crushing cutter wheels (22) on the two rotating shafts (20) are alternately arranged. A mounting frame (13) is provided on one side of the crushing housing (12), and a motor (23) is provided on the mounting frame (13). The transmission end of the motor (23) is connected to the end of one of the rotating shafts (20) away from the gear (21) through a coupling (3).

3. The granulation device for recycling waste plastics according to claim 1, characterized in that: One of the fixed plates (17) is provided with a mounting bracket three (18). The drive assembly (6) includes a lead screw two (60). The lead screw two (60) is movably disposed between the two fixed plates (17) through a pair of bearing seats two (62). The mounting bracket three (18) is provided with a motor three (61). One end of the motor three (61) is connected to one end of the lead screw two (60) through a coupling (3).

4. The granulation device for recycling waste plastics according to claim 3, characterized in that: The lifting and transfer assembly (5) includes an inverted L-shaped plate (50) disposed at the bottom of the mounting platform (1). A pair of sliding grooves (19) are provided at the bottom of the mounting platform (1). Slide rails (51) are provided at the top of the inverted L-shaped plate (50) corresponding to the two sliding grooves (19), and the two slide rails (51) are respectively movably disposed in the two sliding grooves (19). A drive cylinder (52) is provided at the bottom of the inverted L-shaped plate (50). A nut (53) is provided in the drive cylinder (52). The nut (53) is threaded onto a lead screw (60). Supports are symmetrically provided at the top of both sides of the inverted L-shaped plate (50). The frame (54) is provided with a lead screw (56) movably mounted in each frame (54) via a pair of bearing seats (55). A pair of lifting reducers (57) are symmetrically arranged at the bottom of both sides of the inverted L-shaped plate (50). The transmission ends of the two lifting reducers (57) are connected to the bottom end of the lead screw (56) via a coupling (3). The output ends of the two lifting reducers (57) are connected via a coupling (58). A motor (59) is provided on one side of the inverted L-shaped plate (50). The transmission end of the motor (59) is connected to the input end of one of the lifting reducers (57) via a coupling (3).

5. The granulation device for recycling waste plastics according to claim 4, characterized in that: The top of the mounting platform (1) is provided with a receiving mesh shell (510). The top of the receiving mesh shell (510) is symmetrically provided with upright plates (511) on both sides. The outside of the upright plate (511) is provided with a shaft (512). The shaft (512) is movably disposed in the drive plate (513). The drive plate (513) is disposed in the bracket (54). The drive plate (513) is provided with a second threaded nut (514). The threaded nut (514) is threaded on the first lead screw (56).

6. The granulation device for recycling waste plastics according to claim 2, characterized in that: A mounting bracket (14) is provided on one side of the drying cylinder (11). A feed inlet (15) is provided on the top of the side of the drying cylinder (11) away from the crushing shell (12). A discharge outlet (16) is provided on the bottom of the side of the drying cylinder (11) away from the feed inlet (15). A spiral heating wire (110) is provided inside the wall of the drying cylinder (11). Several exhaust fans (111) are provided on the top of the drying cylinder (11).

7. A granulation device for recycling waste plastics according to claim 6, characterized in that: The flipping and propulsion assembly (7) includes a rotating rod (71), which is movably mounted inside the drying cylinder (11) via a pair of bearing seats (74). A motor (70) is mounted on the mounting frame (14), and the transmission end of the motor (70) is connected to one end of the rotating rod (71) via a coupling (3). A spiral pusher blade (72) is mounted on the rotating rod (71), and several flipping plates (73) are mounted on the spiral pusher blade (72).

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