Plastic fragment recycling pretreatment equipment

Abstract

The invention is suitable for the technical field of plastic waste recycling, and provides plastic fragment recycling pretreatment equipment which comprises an operation barrel, core assemblies are a fine crushing assembly and a coarse crushing assembly, the fine crushing assembly is composed of an outer crushing barrel and an inner crushing seat, the upper end of the outer crushing barrel is rotationally connected with the top of the operation barrel, and the lower portion of the outer crushing barrel is conical; the inner material crushing seat is used for fixing the long sleeve through a connecting rod and is in transmission connection with the outer material crushing barrel through a planetary gear assembly; a lifting driving assembly installed at the bottom of the operation barrel can drive the inner material crushing base to ascend, descend and rotate, so that the outer material crushing barrel reversely rotates relative to the inner material crushing base. The coarse crushing assembly is located at the top of the operation barrel, supported through a lifting piece, adjustable in height and used for guiding the crushed materials to the top of the inner crushing base. Through an adjustable crushing precision regulation and control mechanism, the uniformity of processed plastic fragments is effectively improved, and favorable conditions are created for subsequent recycling.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic waste recycling, and in particular relates to a plastic fragment recycling pretreatment device. Background Art

[0002] With the increasing awareness of environmental protection and the growing demand for resource recycling, the effective recycling and reuse of plastic waste has become an important research direction. Traditional methods for recycling plastic fragments often have problems such as low crushing efficiency, poor particle uniformity, and complex operation. These problems not only limit the application scope of plastic fragments as recycled raw materials, but also affect the overall economic benefits of the recycling process. In addition, traditional crushing equipment is prone to material residue during the processing process, making it difficult to clean up.

[0003] In order to solve these problems, various types of plastic fragment crushing equipment have appeared on the market, aiming to improve crushing efficiency and material particle consistency. However, most existing equipment still has difficulty in achieving efficient fine crushing, especially when processing plastic fragments of different types and shapes, its adaptability and flexibility are insufficient, affecting the final processing efficiency and particle uniformity, and is not conducive to subsequent recycling. Summary of the invention

[0004] The purpose of the present invention is to provide a plastic scrap recycling pretreatment device, aiming to solve the problems mentioned in the above background technology.

[0005] The present invention is implemented as follows: a plastic debris recycling pretreatment device includes an operating cylinder, a support foot is fixed to the bottom of the operating cylinder, and a discharge port is also provided at the bottom of the operating cylinder, and also includes: A fine crushing material assembly, the fine crushing material assembly comprises an outer crushing material barrel and an inner crushing material seat, the upper end of the outer crushing material barrel is rotatably connected to the top of the working barrel, the lower part of the outer crushing material barrel is in a cone shape, the inner side of the outer crushing material barrel is provided with an inner crushing material seat matched with the lower part thereof, a long sleeve is fixed on the top of the inner crushing material seat through a connecting rod support, the long sleeve is transmission-connected to the outer crushing material barrel through a planetary gear assembly, a lifting drive assembly is also installed at the bottom of the working barrel, the lifting drive assembly is transmission-connected to the inner crushing material seat, the lifting drive assembly is used to drive the inner crushing material seat to lift and rotate, and the outer crushing material barrel is driven to rotate in the opposite direction relative to the inner crushing material seat by using the planetary gear assembly; A coarse crushing material assembly is fixed on the top of the working cylinder through a lifting member, the lifting member is used to drive the coarse crushing material assembly to rise and fall, the coarse crushing material assembly is used to crush the plastic fragments, and export the coarse particles of the crushed plastic fragments to the top of the inner crushing material seat.

[0006] Further technical solution: The upper part of the outer crushing cylinder is a cylindrical barrel structure, and the upper end of the outer crushing cylinder is rotatably connected to the inner circle of the top of the working cylinder; the top of the inner crushing seat is a conical structure protruding upward in the middle.

[0007] Further technical solution: A number of hemispherical crushing protrusions A and crushing protrusions B are respectively installed on the inner wall of the lower part of the outer crushing cylinder and the outer wall of the inner crushing seat.

[0008] Further technical solution: The lifting drive assembly includes a push-pull cylinder B fixed to the middle of the inner bottom of the working cylinder. The end of the telescopic core shaft of the push-pull cylinder B is fixed with a motor substrate. A chamber with a lower opening is provided in the middle of the inner side of the inner crushing seat. The motor substrate is rotatably connected to the lower end of the chamber. A motor B is also fixed on the upper side of the motor substrate. The motor B is located in the chamber, and the output shaft of the motor B is fixedly connected to the top of the chamber.

[0009] Further technical solution: The planetary gear assembly includes a sun gear fixed to the outside of the long sleeve and a gear ring fixed to the inner wall of the upper end of the outer crushing cylinder. A corner bracket is also fixed to the top of the working cylinder. A shaft rod is rotatably installed on the corner bracket. A planetary gear is fixed on the shaft rod. The planetary gear is meshed with both the sun gear and the gear ring.

[0010] Further technical solution: The height of the sun gear is greater than the height of the planetary gear; A plurality of connecting rods are circumferentially and evenly distributed.

[0011] Further technical solution: The coarse crushing component includes a crushing cylinder slidably and rotatably connected to the long sleeve. A storage bin is fixed to the top of the crushing cylinder. A material inlet is also provided at the top of the storage bin. A motor A is fixed to the middle of the top of the storage bin. The output end of the motor A is fixed with a crushing shaft. The lower end of the crushing shaft extends to the bottom of the crushing cylinder. A plurality of groups of crushing members are longitudinally distributed and fixed on the crushing shaft inside the crushing cylinder. The crushing members include crushing teeth that are evenly distributed on the outer circumference of the crushing shaft and are conical in shape. The crushing teeth of adjacent two groups of crushing members are evenly staggered.

[0012] Further technical solution: The lifting member includes a cross frame circumferentially and evenly fixed to the outside of the crushing cylinder. A push-pull cylinder A is fixed to the lower side of the outer end of the cross frame. The lower end of the push-pull cylinder A is fixed to the top of the working cylinder.

[0013] Further technical solution: A top protective cover is also fixed to the top of the working cylinder. An elastic ring is fixed between the upper end of the top protective cover and the storage bin.

[0014] A further technical solution is that the plastic fragment recycling pretreatment equipment also includes a material shifting control component, which includes a transmission ring A fixed to the outside of the outer crushing barrel, a transmission ring B is provided on the upper side of the transmission ring A, and a supporting ring is rotatably installed on the outer side of the transmission ring B. A plurality of push-pull cylinders C are circumferentially distributed and fixed on the upper side of the supporting ring, and the upper ends of the push-pull cylinders C are fixed to the inner top of the working barrel. A plurality of transmission teeth A are fixed on the upper side of the transmission ring A, and a plurality of transmission teeth B matching with the transmission teeth A are fixed on the lower side of the transmission ring B, and when the push-pull cylinder C is extended and the transmission teeth B and the transmission teeth A are abutted, the transmission ring B rotates synchronously with the transmission ring A; a plurality of suspension rods are also evenly distributed and fixed on the lower side of the transmission ring B, and a material shifting plate matching with the bottom of the inner cavity of the working barrel is fixed on the lower end of the suspension rod.

[0015] The present invention provides a plastic debris recycling pretreatment device, which has the following beneficial effects: The plastic fragments can be crushed by the coarse crushing component, and the crushed plastic fragments are exported to the top of the inner crushing seat. The coarse crushing component can be driven to rise and fall by the lifting part to change the distance between the outlet of the coarse crushing component and the inner crushing seat. The crushing time of the plastic fragments in the coarse crushing component can be assisted by controlling the smoothness of the discharge, which helps to change the uniformity and fineness of the crushed material.

[0016] The crushed coarse plastic particles fall onto the inner crushing seat and are rotated and centrifuged, and then fall into the space between the outer crushing barrel and the inner crushing seat for fine crushing. The lifting drive component can drive the inner crushing seat to rise and fall and rotate, change the distance between the outer crushing barrel and the inner crushing seat, and use the planetary gear component to drive the outer crushing barrel to rotate in the opposite direction relative to the inner crushing seat, and match the conical structure of the outer crushing barrel and the inner crushing seat to optimize the fluidity and distribution of the material, enhance the shear and diffusion effects, and improve the uniformity of crushing and processing efficiency.

[0017] In summary, the plastic fragment recycling pretreatment equipment, through the adjustable crushing precision control mechanism, effectively improves the uniformity of plastic fragments after processing, creating favorable conditions for subsequent recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of a plastic debris recycling pretreatment device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of the plastic debris recycling pretreatment equipment provided by an embodiment of the present invention, with the top protective cover and part of the working cylinder removed; Figure 3 for Figure 2 Schematic diagram of the structure at an upward viewing angle; Figure 4 An axonometric diagram of a plastic scrap recycling pretreatment device provided by an embodiment of the present invention; Figure 5 is Figure 4 a schematic structural diagram of the medium coarse crushing component; Figure 6 is Figure 4 a schematic structural diagram of the medium fine crushing component and the material feeding control component; Figure 7 is Figure 6 an enlarged schematic structural diagram of part A in the figure.

[0019] In the figure: 1 - top protective cover, 2 - material inlet, 3 - motor A, 4 - storage bin, 5 - elastic ring, 6 - working cylinder, 7 - support feet, 8 - discharge port, 9 - corner bracket, 10 - shaft rod, 11 - planet gear, 12 - ring gear, 13 - sun gear, 14 - connecting rod, 15 - push - pull cylinder A, 16 - cross frame, 17 - crushing cylinder, 18 - push - pull cylinder B, 19 - outer crushing cylinder, 20 - push - pull cylinder C, 21 - supporting ring, 22 - transmission ring A, 23 - suspension rod, 24 - material feeding plate, 25 - guiding platform, 26 - inner crushing seat, 27 - crushing shaft, 28 - crushing teeth, 29 - crushing protrusion A, 30 - crushing protrusion B, 31 - motor base plate, 32 - motor B, 33 - chamber, 34 - long sleeve, 35 - transmission gear A, 36 - transmission gear B, 37 - transmission ring B. Specific embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0022] As Figures 1-4 、 Figure 6 shown, a plastic fragment recycling pretreatment device provided by an embodiment of the present invention includes a working cylinder 6. The bottom of the working cylinder 6 is fixed with support feet 7. A discharge port 8 is also provided at the bottom of the working cylinder 6. Through the discharge port 8, the processed plastic pellets are discharged. It further includes: Fine crushing component, the fine crushing component includes an outer crushing cylinder 19 and an inner crushing seat 26. The upper end of the outer crushing cylinder 19 is rotatably connected to the top of the working cylinder 6. The lower part of the outer crushing cylinder 19 is conical. An inner crushing seat 26 that matches the lower part thereof is provided inside the outer crushing cylinder 19. A long sleeve 34 is supported and fixed at the top of the inner crushing seat 26 through a connecting rod 14. The long sleeve 34 is drivingly connected to the outer crushing cylinder 19 through a planetary gear assembly. A lifting drive assembly is further installed at the bottom of the working cylinder 6. The lifting drive assembly is drivingly connected to the inner crushing seat 26. The lifting drive assembly is used to drive the inner crushing seat 26 to lift and rotate, and drive the outer crushing cylinder 19 to rotate in the opposite direction relative to the inner crushing seat 26 by using the planetary gear assembly; Coarse crushing component, a coarse crushing component is supported and fixed at the top of the working cylinder 6 through a lifting member. The lifting member is used to drive the coarse crushing component to lift. The coarse crushing component is used to crush plastic fragments and export the coarse particles of the crushed plastic fragments to the top of the inner crushing seat 26.

[0023] In the embodiment of the present invention, the plastic fragments can be crushed by the coarse crushing component, and the crushed plastic fragments are exported to the top of the inner crushing seat 26. The lifting member can be used to drive the coarse crushing component to lift, change the distance between the outlet of the coarse crushing component and the inner crushing seat 26, and assist in adjusting the crushing time of the plastic fragments in the coarse crushing component through the discharge smoothness control, which helps to change the uniformity and fineness of the crushed material.

[0024] The crushed plastic fragments fall onto the inner crushing seat 26 and are rotated centrifugally, and then fall between the outer crushing cylinder 19 and the inner crushing seat 26 for fine crushing processing. The lifting drive assembly can drive the inner crushing seat 26 to lift and rotate, change the distance between the outer crushing cylinder 19 and the inner crushing seat 26, and drive the outer crushing cylinder 19 to rotate in the opposite direction relative to the inner crushing seat 26 by using the planetary gear assembly, and cooperate with the conical structures of the outer crushing cylinder 19 and the inner crushing seat 26 to optimize the fluidity and distribution of the material, enhance the shearing and diffusion effects, and improve the uniformity and processing efficiency of crushing.

[0025] As Figures 2-4 、 Figure 6 shown, as a preferred embodiment of the present invention, the upper part of the outer crushing cylinder 19 is a cylindrical barrel structure. The upper end of the outer crushing cylinder 19 is rotatably connected to the inner circle of the top of the working cylinder 6, ensuring the stable rotation of the outer crushing cylinder 19.

[0026] The top of the inner crushing seat 26 is a conical structure protruding upward in the middle, which is beneficial to the centrifugation and diversion and sliding of the material.

[0027] Among them, the outer crushing cylinder 19 and the inner crushing seat 26 are made of high chromium alloy steel and are sprayed with a tungsten carbide wear-resistant coating on the surface, and the service life can reach more than 3 times that of traditional components.

[0028] A number of hemispherical crushing protrusions A29 and crushing protrusions B30 are respectively installed on the lower inner wall of the outer crushing cylinder 19 and the outer side wall of the inner crushing seat 26. The uniformity of crushing can be improved through the crushing protrusions A29 and B30, and it is helpful to disperse and crush the nodular plastic coarse particles. Just pay attention to controlling the distance between the outer crushing cylinder 19 and the inner crushing seat 26 to be suitable to avoid the collision between the crushing protrusions A29 and B30. The crushing protrusions A29 and B30 adopt a detachable design, which is convenient for replacement and maintenance.

[0029] The lifting drive assembly includes a push-pull cylinder B18 fixed to the middle of the inner bottom of the working cylinder 6. The end of the telescopic core shaft of the push-pull cylinder B18 is fixed with a motor base plate 31. A chamber 33 with a lower opening is formed in the middle of the inner side of the inner crushing seat 26. The motor base plate 31 is rotatably connected to the lower end of the chamber 33. A motor B32 is also fixed on the upper side of the motor base plate 31. The motor B32 is located in the chamber 33. The output shaft of the motor B32 is fixedly connected to the top of the chamber 33. The motor base plate 31 can be driven to lift by the push-pull cylinder B18, so as to control the lifting of the inner crushing seat 26. The inner crushing seat 26 can be driven to rotate by the motor B32. And the motor base plate 31 and the lower end of the chamber 33 are rotatably connected, which improves the rotation stability and sealing performance of the inner crushing seat 26 and prevents materials from entering the chamber 33.

[0030] A plurality of connecting rods 14 are circumferentially and uniformly distributed to improve the stability of supporting the long sleeve 34; the planetary gear assembly includes a sun gear 13 fixed to the outer side of the long sleeve 34 and a ring gear 12 fixed to the upper inner wall of the outer crushing cylinder 19. A corner bracket 9 is also fixed to the top of the working cylinder 6. A shaft rod 10 is rotatably installed on the corner bracket 9. A planetary gear 11 is fixed on the shaft rod 10. The planetary gear 11 is meshed with both the sun gear 13 and the ring gear 12. Among them, the height of the sun gear 13 is greater than the height of the planetary gear 11 to meet the requirement of the lifting of the inner crushing seat 26, that is, when the inner crushing seat 26 is lifted and adjusted, the sun gear 13 can always be meshed with the planetary gear 11. When the inner crushing seat 26 rotates, the sun gear 13 drives the planetary gear 11 to rotate in the opposite direction, and then the planetary gear 11 drives the ring gear 12 to rotate in the same direction, so that the outer crushing cylinder 19 and the inner crushing seat 26 rotate in the opposite direction, improving the crushing effect and efficiency. In addition, the transmission ratio of the planetary gear assembly is preferably 3:1 to ensure that the rotational speed difference between the outer crushing cylinder 19 and the inner crushing seat 26 is 200 - 300 rpm.

[0031] As Figures 1-2 、 Figures 4-5As shown, as a preferred embodiment of the present invention, the coarse crushing component includes a crushing cylinder 17 that is slidably and rotatably connected to the long sleeve 34. A storage bin 4 is fixed to the top of the crushing cylinder 17. A material inlet 2 is further provided at the top of the storage bin 4 to facilitate the addition of plastic fragments. A motor A3 is fixed in the middle of the top of the storage bin 4. The output end of the motor A3 is fixed with a crushing shaft 27. The lower end of the crushing shaft 27 extends to the bottom of the crushing cylinder 17. A plurality of groups of crushing members are longitudinally distributed and fixed on the crushing shaft 27 inside the crushing cylinder 17. The crushing members include crushing teeth 28 that are evenly distributed on the outer circumference of the crushing shaft 27 and are conical in shape. The crushing teeth 28 of adjacent two groups of the crushing members are evenly staggered to improve the sufficiency of crushing. In addition, by controlling the rotation speed of the motor A3, the purpose of changing the crushing particle size can be achieved, and it can be adjusted as needed. The storage bin 4 can be used to transfer materials to the crushing cylinder 17. The high-speed rotation of the crushing teeth 28 can crush the materials and fall onto the top of the inner crushing seat 26. The sliding and rotational connection of the crushing cylinder 17 and the long sleeve 34 can improve the stability of the rotation of the long sleeve 34.

[0032] The lifting member includes a cross frame 16 that is circumferentially and evenly distributed and fixed on the outside of the crushing cylinder 17. A push-pull cylinder A15 is fixed to the lower side of the outer end of the cross frame 16. The lower end of the push-pull cylinder A15 is fixed to the top of the working cylinder 6. By adjusting the push-pull cylinder A15, the distance between the lower end of the crushing cylinder 17 and the inner crushing seat 26 can be adjusted to achieve the purpose of controlling the size of the crushing particle size.

[0033] In one embodiment, in order to provide safety protection for the device and avoid dust diffusion, a top protective cover 1 is further fixed to the top of the working cylinder 6. An elastic ring 5 is fixed between the upper end of the top protective cover 1 and the storage bin 4. The elastic ring 5 only needs to have elasticity to meet the requirement of the storage bin 4 for lifting and adjusting along with the crushing cylinder 17. The combination of the top protective cover 1 and the elastic ring 5 has a relatively reliable protective and dust-proof effect.

[0034] Preferably, a dust adsorption module (not shown) is built in the top protective cover 1, which can filter more than 95% of the microplastic particles and meet the industrial environmental protection standards.

[0035] Such as Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7As shown in the figure, as a preferred embodiment of the present invention, the plastic fragment recycling pretreatment device further includes a feeding control component. The feeding control component includes a transmission ring A22 fixed to the outer side of the outer shredding cylinder 19. A transmission ring B37 is provided on the upper side of the transmission ring A22. A supporting ring 21 is rotatably installed on the outer side of the transmission ring B37. A plurality of push-pull cylinders C20 are circumferentially distributed and fixed on the upper side of the supporting ring 21. The upper ends of the push-pull cylinders C20 are fixed to the inner top of the working cylinder 6. A number of transmission teeth A35 are fixed on the upper side of the transmission ring A22. A number of transmission teeth B36 that cooperate with the transmission teeth A35 are fixed on the lower side of the transmission ring B37. And when the push-pull cylinder C20 extends and the transmission teeth B36 and the transmission teeth A35 are in contact, the transmission ring B37 rotates synchronously with the transmission ring A22. A plurality of suspension rods 23 are circumferentially and evenly distributed and fixed on the lower side of the transmission ring B37. A feeding plate 24 that cooperates with the bottom of the inner cavity of the working cylinder 6 is fixed to the lower end of the suspension rod 23. By controlling whether the transmission ring B37 is in transmission connection with the transmission ring A22 through the push-pull cylinder C20, the supporting ring 21 meets the need for the transmission ring B37 to rotate stably with the transmission ring A22. When the transmission teeth B36 and the transmission teeth A35 are in contact, it can be arranged that the feeding plate 24 is closely adapted to the bottom of the inner cavity of the working cylinder 6 to ensure the reliability of the discharged material from the discharge port 8. The outer side of the bottom of the inner cavity of the working cylinder 6 can be chamfered, so that the feeding plate 24 can be adapted accordingly to avoid material residue.

[0036] Taking the treatment of PET bottle fragments as an example, the material is fed through the material inlet 2. The rotation speed of the motor A3 is set to 1500 rpm. The distance between the lower end of the coarse crushing component and the top of the inner crushing seat 26 is 50 mm, and the distance between the outer crushing cylinder 19 and the inner crushing seat 26 is adjusted to 10 mm. After being treated by this equipment, the particle uniformity reaches 98%, and it can be directly used for recycled granulation, meeting the recycling standard.

[0037] Through experimental verification, by adjusting the synergistic effect of the coarse crushing component and the fine crushing component, the particle uniformity of the processed plastic fragments can be increased to more than 95% (about 75%-85% for traditional equipment), the processing efficiency reaches 500 kg per hour, and the energy consumption is reduced by about 20%. In addition, the particle size deviation of the crushed particles is controlled within ±1 mm, which is significantly better than the ±2 mm deviation range of the existing equipment.

[0038] In the above embodiment of the present invention, a plastic fragment recycling pretreatment device is provided, and the working principle is as follows: First, the plastic fragments to be processed are added to the equipment through the material inlet 2 at the top of the storage bin 4.

[0039] The motor A3 is started to drive the crushing shaft 27 and the crushing teeth 28 thereon to rotate, and the material transported from the storage bin 4 into the crushing cylinder 17 is crushed.

[0040] The crushed material is exported to the top of the inner crushing seat 26. The height of the coarse crushing component is adjusted by the lifting components (push-pull cylinder A15 and cross frame 16), and the distance between the outlet of the coarse crushing component and the inner crushing seat 26 is changed to adjust the crushing time of the material in the coarse crushing component, thereby affecting the particle size and uniformity of the coarse crushing.

[0041] The crushed material falls onto the inner crushing seat 26 and slides outward under the action of its rotational centrifugal force, entering the space between the outer crushing cylinder 19 and the inner crushing seat 26.

[0042] The lifting drive components (push-pull cylinder B18, motor base plate 31, motor B32) drive the inner crushing seat 26 to lift and rotate. At the same time, the planetary gear components (sun gear 13, planetary gears 11, ring gear 12) drive the outer crushing cylinder 19 to rotate in the opposite direction, enhancing the shearing and diffusion effects of the material and improving the crushing efficiency and effect.

[0043] The fully crushed material is finally discharged through the discharge port 8 at the bottom of the working cylinder 6. The material feeding control components (transmission ring A22, transmission ring B37, supporting ring 21, suspension rod 23, material feeding plate 24) ensure that the material can be reliably discharged from the discharge port 8.

[0044] In summary, the plastic fragment recycling pretreatment equipment realizes a series of processes from material addition, coarse crushing, fine crushing to final discharge. During the whole process, through the design of the mechanical structure, the equipment effectively improves the efficiency and accuracy of plastic fragment processing, creating favorable conditions for subsequent recycling.

[0045] The control of each component can adopt the PLC controller disclosed in the prior art. The models and circuit connections of each component are not specifically limited and can be flexibly set in actual applications.

[0046] The circuits, electronic components and modules involved are all prior art and can be fully realized by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0047] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0048] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A plastic scrap recycling pretreatment device, comprising an operating cylinder (6), a support leg (7) being fixed to the bottom of the operating cylinder (6), and a discharge port (8) being provided at the bottom of the operating cylinder (6), characterized in that: Also includes: A fine crushing component, the fine crushing component comprising an outer crushing barrel (19) and an inner crushing seat (26), the upper end of the outer crushing barrel (19) being rotatably connected to the top of the working barrel (6), the lower part of the outer crushing barrel (19) being in a conical shape, the inner side of the outer crushing barrel (19) being provided with an inner crushing seat (26) matching with the lower part thereof, the top of the inner crushing seat (26) being supported and fixed with a long sleeve (34) via a connecting rod (14), the long sleeve (34) being transmission-connected to the outer crushing barrel (19) via a planetary gear assembly; a lifting drive assembly is also installed at the bottom of the working barrel (6), the lifting drive assembly being transmission-connected to the inner crushing seat (26), the lifting drive assembly being used to drive the inner crushing seat (26) to lift and rotate, and the planetary gear assembly is used to drive the outer crushing barrel (19) to rotate in the opposite direction relative to the inner crushing seat (26); A coarse crushing material component is fixed to the top of the working cylinder (6) via a lifting member, the lifting member is used to drive the coarse crushing material component to rise and fall, the coarse crushing material component is used to crush the plastic fragments, and guide the coarse particles of the crushed plastic fragments to the top of the inner crushing material seat (26).

2. The plastic debris recycling pretreatment equipment according to claim 1, characterized in that: The upper part of the outer crushing cylinder (19) is a cylindrical cylinder structure, and the upper end of the outer crushing cylinder (19) is rotatably connected to the inner ring of the top of the working cylinder (6); The top of the inner crushing material seat (26) is in a conical structure with the middle protruding upwards.

3. The plastic debris recycling pretreatment equipment according to claim 2, characterized in that: A plurality of hemispherical crushing protrusions A (29) and crushing protrusions B (30) are respectively mounted on the lower inner wall of the outer crushing barrel (19) and the outer outer wall of the inner crushing seat (26).

4. The plastic scrap recycling pretreatment equipment according to any one of claims 1 to 3, characterized in that: The lifting drive assembly comprises a push-pull cylinder B (18) fixed in the middle of the bottom of the working cylinder (6), and a motor base plate (31) is fixed to the end of the telescopic core shaft of the push-pull cylinder B (18); A chamber (33) with a lower opening is provided in the middle of the inner side of the inner crushing material seat (26); a motor base plate (31) is rotatably connected to the lower end of the chamber (33); a motor B (32) is fixed to the upper side of the motor base plate (31); the motor B (32) is located in the chamber (33); and an output shaft of the motor B (32) is fixedly connected to the top of the chamber (33).

5. The plastic scrap recycling pretreatment equipment according to claim 4, characterized in that: The planetary gear assembly comprises a sun gear (13) fixed to the outside of the long sleeve (34) and a gear ring (12) fixed to the inner wall of the upper end of the outer crushing cylinder (19); A corner bracket (9) is also fixed to the top of the working cylinder (6), a shaft (10) is rotatably mounted on the corner bracket (9), a planetary gear (11) is fixed to the shaft (10), and the planetary gear (11) is meshingly connected with the sun gear (13) and the ring gear (12).

6. The plastic scrap recycling pretreatment equipment according to claim 5, characterized in that: The height of the sun gear (13) is greater than the height of the planet gear (11); A plurality of connecting rods (14) are evenly distributed in the circumferential direction.

7. The plastic scrap recycling pretreatment equipment according to any one of claims 1 to 3, characterized in that: The coarse crushing component comprises a crushing cylinder (17) slidably and rotatably connected to the long sleeve (34); a material storage bin (4) is fixed on the top of the crushing cylinder (17); and a material inlet (2) is also provided on the top of the material storage bin (4); A motor A (3) is fixed in the middle of the top of the storage bin (4), a crushing shaft (27) is fixed to the output end of the motor A (3), the lower end of the crushing shaft (27) extends to the bottom of the crushing barrel (17), and a plurality of groups of crushing parts are longitudinally distributed and fixed on the crushing shaft (27) inside the crushing barrel (17); The crushing elements include crushing teeth (28) that are evenly distributed on the outer circumference of the crushing shaft (27) and are in a cone shape; the crushing teeth (28) of two adjacent groups of crushing elements are evenly staggered.

8. The plastic scrap recycling pretreatment equipment according to claim 7, characterized in that: The lifting member comprises a horizontal frame (16) evenly distributed in the circumferential direction and fixed to the outside of the crushing cylinder (17); a push-pull cylinder A (15) is fixed to the lower side of the outer end of the horizontal frame (16); and the lower end of the push-pull cylinder A (15) is fixed to the top of the working cylinder (6).

9. The plastic scrap recycling pretreatment equipment according to claim 8, characterized in that: A top protective cover (1) is also fixed to the top of the working cylinder (6), and an elastic ring (5) is fixed between the upper end of the top protective cover (1) and the material storage bin (4).

10. The plastic scrap recycling pretreatment equipment according to any one of claims 1 to 3, characterized in that: The plastic scrap recycling pretreatment equipment also includes a material shifting control assembly, the material shifting control assembly including a transmission ring A (22) fixed to the outside of an outer scrap barrel (19), a transmission ring B (37) being provided on the upper side of the transmission ring A (22), a support ring (21) being rotatably mounted on the outer side of the transmission ring B (37), a plurality of push-pull cylinders C (20) being circumferentially distributed and fixed on the upper side of the support ring (21), and the upper ends of the push-pull cylinders C (20) being fixed to the inner top of the working barrel (6); A plurality of transmission teeth A (35) are fixed on the upper side of the transmission ring A (22), and a plurality of transmission teeth B (36) matching with the transmission teeth A (35) are fixed on the lower side of the transmission ring B (37); and when the push-pull cylinder C (20) is extended and the transmission teeth B (36) and the transmission teeth A (35) are abutted, the transmission ring B (37) rotates synchronously with the transmission ring A (22); A plurality of suspension rods (23) are evenly distributed and fixed to the lower side of the transmission ring B (37) in the circumferential direction, and a material-pickup plate (24) that matches the bottom of the inner cavity of the working cylinder (6) is fixed to the lower end of the suspension rod (23).

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