A plastic flake recycling pretreatment apparatus

Abstract

The application is suitable for the technical field of plastic waste recycling, and provides a plastic fragment recycling pretreatment equipment, which comprises a working cylinder, and the core components are a fine crushing component and a coarse crushing component; the fine crushing component is composed of an outer crushing cylinder and an inner crushing seat, the upper end of the outer crushing cylinder is rotationally connected with the top of the working cylinder, and the lower part of the outer crushing cylinder is conical; the inner crushing seat is fixed with a long sleeve through a connecting rod and is drivingly connected with the outer crushing cylinder through a planetary gear assembly; a lifting driving assembly installed at the bottom of the working cylinder can drive the inner crushing seat to lift and rotate, so that the outer crushing cylinder rotates reversely relative to the inner crushing seat; the coarse crushing component is located at the top of the working cylinder, is supported by a lifting piece and can be adjusted in height, and is used for crushing the material and then guiding the material to the top of the inner crushing seat. Through the adjustable crushing precision regulation mechanism, the uniformity of the processed plastic fragments is effectively improved, and favorable conditions are created for subsequent recycling.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of plastic waste recycling, and particularly relates to a plastic fragment recycling pretreatment equipment. BACKGROUND

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

[0003] In order to solve these problems, various types of plastic fragment crushing equipment have appeared on the market, aiming to improve the crushing efficiency and consistency of material particles. However, most of the existing equipment still cannot achieve efficient fine crushing, especially when processing different types and shapes of plastic fragments, their adaptability and flexibility are insufficient, affecting the final processing efficiency and particle size uniformity, which is not conducive to subsequent recycling and utilization. SUMMARY

[0004] The purpose of the present application is to provide a plastic fragment recycling pretreatment equipment to solve the problems mentioned in the background.

[0005] The present application is realized in the following way: a plastic fragment recycling pretreatment equipment, comprising a work cylinder, the bottom of the work cylinder is fixed with a support foot, and the bottom of the work cylinder is also provided with a discharge port, further comprising:

[0006] A fine crushing assembly, the fine crushing assembly comprises an outer crushing cylinder and an inner crushing seat, the upper end of the outer crushing cylinder is rotatably connected to the top of the work cylinder, the lower part of the outer crushing cylinder is conical in shape, the inner side of the outer crushing cylinder is provided with an inner crushing seat matched with the lower part thereof, the top of the inner crushing seat is fixed with a long sleeve through a connecting rod, and the long sleeve is drivingly connected with the outer crushing cylinder through a planetary gear assembly, the bottom of the work cylinder is also provided with a lifting driving assembly, the lifting driving assembly is drivingly connected with the inner crushing seat, the lifting driving assembly is used to drive the inner crushing seat to lift and rotate, and the outer crushing cylinder is driven to rotate in the opposite direction relative to the inner crushing seat by the planetary gear assembly;

[0007] A coarse crushing assembly, the top of the work cylinder is fixed with a coarse crushing assembly through a lifting piece, the lifting piece is used to drive the coarse crushing assembly to lift, the coarse crushing assembly is used to crush plastic fragments, and the coarse particles of the crushed plastic fragments are guided out to the top of the inner crushing seat.

[0008] Further technical solutions, the upper part of the outer crushing cylinder is a cylindrical body structure, the upper end of the outer crushing cylinder is rotatably connected with the inner ring of the top of the working cylinder; the top of the inner crushing seat is a conical structure protruding upward in the middle.

[0009] Further technical solutions, the inner wall of the lower part of the outer crushing cylinder and the outer side wall of the inner crushing seat are respectively provided with a plurality of semispherical crushing protrusions A and crushing protrusions B.

[0010] Further technical solutions, the lifting driving assembly comprises a push-pull cylinder B fixed in the middle of the inner bottom of the working cylinder, the telescopic shaft end of the push-pull cylinder B is fixed with a motor base plate, the inner side of the inner crushing seat is provided with a chamber with a lower opening in the middle, the motor base plate is rotatably connected with the lower end of the chamber, and the upper side of the motor base plate is further fixed with a motor B, the motor B is located in the chamber, and the output shaft of the motor B is fixedly connected with the top of the chamber.

[0011] Further technical solutions, the planetary gear assembly comprises a sun gear fixed to the outer side of the long sleeve and a gear ring fixed to the inner wall of the upper end of the outer crushing cylinder, the top of the working cylinder is further fixed with an angle bracket, an axle rod is rotatably installed on the angle bracket, a planetary gear is fixed on the axle rod, and the planetary gear is rotatably connected with the sun gear and the gear ring.

[0012] Further technical solutions, the height of the sun gear is greater than the height of the planetary gear; and a plurality of connecting rods are uniformly distributed in the circumferential direction.

[0013] Further technical solutions, the coarse crushing assembly comprises a crushing cylinder in sliding and rotating connection with the long sleeve, a storage bin is fixed to the top of the crushing cylinder, a material inlet is further arranged on the top of the storage bin, a motor A is fixed to the middle of the top of the storage bin, a crushing shaft is fixed to the output end of the motor A, the lower end of the crushing shaft extends to the bottom of the crushing cylinder, a plurality of groups of crushing pieces are fixed on the crushing shaft in the inner side of the crushing cylinder in the longitudinal direction, the crushing pieces comprise crushing teeth which are uniformly distributed on the outer side of the crushing shaft in the circumferential direction and have a conical shape, and the crushing teeth of adjacent two groups of the crushing pieces are uniformly and staggeredly arranged.

[0014] Further technical solutions, the lifting piece comprises a horizontal frame which is fixed to the outer side of the crushing cylinder in the circumferential direction, a push-pull cylinder A is fixed to the lower side of the outer end of the horizontal frame, and the lower end of the push-pull cylinder A is fixed to the top of the working cylinder.

[0015] Further technical solutions, the top of the working cylinder is further fixed with a top protective cover, and an elastic ring is fixed between the upper end of the top protective cover and the storage bin.

[0016] Further technical solutions, the plastic fragment recycling pretreatment equipment further comprises a material pushing control assembly, the material pushing control assembly comprises a transmission ring A fixed to the outside of the outer crushing cylinder, the upper side of the transmission ring A is provided with a transmission ring B, the outer side of the transmission ring B is rotatably installed with a supporting ring, the upper side of the supporting ring is circumferentially fixed with a plurality of push-pull cylinders C, the upper end of the push-pull cylinder C is fixed to the inner top of the working cylinder, a plurality of transmission teeth A are fixed to the upper side of the transmission ring A, a plurality of transmission teeth B matched with the transmission teeth A are fixed to the lower side of the transmission ring B, and when the push-pull cylinder C is elongated and the transmission teeth B and the transmission teeth A abut, the transmission ring B rotates synchronously with the transmission ring A; a plurality of suspension rods are fixed to the lower side of the transmission ring B and are circumferentially and uniformly distributed, and the lower end of the suspension rod is fixed with a material pushing plate matched with the bottom of the inner cavity of the working cylinder.

[0017] The plastic fragment recycling pretreatment equipment provided by the application has the following beneficial effects:

[0018] The coarse crushing assembly can crush the plastic fragments, and the crushed plastic fragments are guided to the top of the inner crushing seat, the lifting member can drive the coarse crushing assembly to lift, the distance between the outlet of the coarse crushing assembly and the inner crushing seat is changed, the crushing time of the plastic fragments in the coarse crushing assembly is adjusted through the smoothness of the outlet, which helps to change the uniformity and fineness of the crushed materials.

[0019] The crushed plastic coarse particles fall on the inner crushing seat and are rotated and centrifuged, and then fall into the space between the outer crushing cylinder and the inner crushing seat for fine crushing processing, the lifting driving assembly can drive the inner crushing seat to lift and rotate, the distance between the outer crushing cylinder and the inner crushing seat is changed, the outer crushing cylinder is driven to rotate in the opposite direction relative to the inner crushing seat by the planetary gear assembly, and the conical structure of the outer crushing cylinder and the inner crushing seat is matched, so that the flowability and distribution of the materials are optimized, the shearing and diffusion effects are enhanced, and the uniformity and processing efficiency of the crushing are improved.

[0020] In summary, the plastic fragment recycling pretreatment equipment effectively improves the uniformity of the processed plastic fragments through the adjustable crushing precision regulation mechanism, and creates favorable conditions for subsequent recycling. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The overall structure schematic diagram of the plastic fragment recycling pretreatment equipment provided by the embodiment of the application is shown in the figure;

[0022] Figure 2 The structure schematic diagram of the plastic fragment recycling pretreatment equipment provided by the embodiment of the application is shown in the figure;

[0023] Figure 3 The Figure 2 The lower side structure schematic diagram is shown in the figure;

[0024] Figure 4 The axial view of the plastic fragment recycling pretreatment equipment provided by the embodiment of the present application;

[0025] Figure 5 The axial view of the plastic fragment recycling pretreatment equipment provided by the embodiment of the present application; Figure 4 The structural schematic view of the medium coarse crushing assembly;

[0026] Figure 6 The axial view of the plastic fragment recycling pretreatment equipment provided by the embodiment of the present application; Figure 4 The structural schematic view of the medium fine crushing assembly and the raking control assembly;

[0027] Figure 7 The axial view of the plastic fragment recycling pretreatment equipment provided by the embodiment of the present application; Figure 6 The enlarged structural schematic view of the A part of the medium;

[0028] In the figure: 1-top protection cover, 2-material inlet, 3-motor A, 4-storage bin, 5-elastic ring, 6-working cylinder, 7-supporting leg, 8-discharge port, 9-corner support, 10-shaft, 11-planetary wheel, 12-toothed ring, 13-sun wheel, 14-connecting rod, 15-pushing and pulling cylinder A, 16-cross frame, 17-crushing cylinder, 18-pushing and pulling cylinder B, 19-outer crushing cylinder, 20-pushing and pulling cylinder C, 21-bearing ring, 22-driving ring A, 23-hanging rod, 24-raking plate, 25-guiding table, 26-inner crushing seat, 27-crushing shaft, 28-crushing tooth, 29-crushing protrusion A, 30-crushing protrusion B, 31-motor base plate, 32-motor B, 33-cavity, 34-long sleeve, 35-driving tooth A, 36-driving tooth B, 37-driving ring B. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0030] The specific implementation of the present application is described in detail below in combination with specific embodiments.

[0031] As Figures 1-4 , Figure 6 shown, the plastic fragment recycling pretreatment equipment provided by an embodiment of the present application, including working cylinder 6, the bottom of the working cylinder 6 is fixed with supporting leg 7, the bottom of the working cylinder 6 is also provided with discharge port 8, through discharge port 8 for discharging the processed plastic fragment, further comprising:

[0032] The fine crushing assembly comprises an outer crushing cylinder 19 and an inner crushing seat 26, the upper end of the outer crushing cylinder 19 is rotationally connected with the top of the working cylinder 6, the lower part of the outer crushing cylinder 19 is in a conical shape, the inner side of the outer crushing cylinder 19 is provided with the inner crushing seat 26 matched with the lower part of the outer crushing cylinder 19, the top of the inner crushing seat 26 is supported and fixed with a long sleeve 34 through a connecting rod 14, the long sleeve 34 is in transmission connection with the outer crushing cylinder 19 through a planetary gear assembly, the bottom of the working cylinder 6 is further provided with a lifting driving assembly, the lifting driving assembly is in transmission connection with the inner crushing seat 26, the lifting driving assembly is used to drive the inner crushing seat 26 to lift and rotate, and the outer crushing cylinder 19 is driven to rotate reversely relative to the inner crushing seat 26 by the planetary gear assembly.

[0033] The coarse crushing assembly is supported and fixed with the lifting piece on the top of the working cylinder 6, the lifting piece is used to drive the coarse crushing assembly to lift, the coarse crushing assembly is used to crush the plastic pieces, and the coarse particles of the crushed plastic pieces are guided out to the top of the inner crushing seat 26.

[0034] In the embodiment of the application, the plastic pieces can be crushed by the coarse crushing assembly, and the crushed plastic pieces are guided out to the top of the inner crushing seat 26, the coarse crushing assembly can be driven to lift by the lifting piece, the distance between the outlet of the coarse crushing assembly and the inner crushing seat 26 is changed, the crushing time of the plastic pieces in the coarse crushing assembly is adjusted by the auxiliary adjustment of the discharge smoothness, and the uniformity and fineness of the crushed material are changed.

[0035] The crushed plastic pieces fall on the inner crushing seat 26 and are rotated and centrifuged, and then fall into the outer crushing cylinder 19 and the inner crushing seat 26 to be finely crushed, the inner crushing seat 26 can be driven to lift and rotate by the lifting driving assembly, the distance between the outer crushing cylinder 19 and the inner crushing seat 26 is changed, the outer crushing cylinder 19 is driven to rotate reversely relative to the inner crushing seat 26 by the planetary gear assembly, and the conical structure of the outer crushing cylinder 19 and the inner crushing seat 26 is matched, so that the flowability and distribution of the material are optimized, the shearing and diffusion effects are enhanced, and the uniformity and processing efficiency of the crushing are improved.

[0036] As shown in Figures 2-4 , Figure 6 As a preferred embodiment of the application, the upper part of the outer crushing cylinder 19 is in a cylindrical body structure, the upper end of the outer crushing cylinder 19 is rotationally connected with the inner ring of the top of the working cylinder 6, and the stable rotation of the outer crushing cylinder 19 is ensured.

[0037] The top of the inner crushing seat 26 is in a conical structure protruding upward in the middle, which is beneficial to the centrifugation and flow guiding sliding of the material.

[0038] The outer crushing cylinder 19 and the inner crushing seat 26 are made of high chromium alloy steel, and the surface is sprayed with a tungsten carbide wear-resistant coating, so that the service life is more than 3 times of that of the traditional components.

[0039] The lower inner wall of the outer crushing cylinder 19 and the outer wall of the inner crushing seat 26 are respectively provided with a plurality of semispherical crushing protrusions A 29 and crushing protrusions B 30, which can improve the uniformity of crushing and help to break up the nodular plastic coarse particles. Note that the distance between the outer crushing cylinder 19 and the inner crushing seat 26 should be properly adjusted to avoid the collision of the crushing protrusions A 29 and the crushing protrusions B 30. The crushing protrusions A 29 and the crushing protrusions B 30 are designed to be detachable for easy replacement and maintenance.

[0040] The lifting driving assembly includes a push-pull cylinder B 18 fixed to the middle of the inner bottom of the working cylinder 6, the telescopic shaft end of the push-pull cylinder B 18 is fixed with a motor base plate 31, the inner side of the inner crushing seat 26 is provided with a lower open chamber 33, the motor base plate 31 is rotatably connected with the lower end of the chamber 33, the upper side of the motor base plate 31 is further fixed with a motor B 32, the motor B 32 is located in the chamber 33, the output shaft of the motor B 32 is fixedly connected with the top of the chamber 33, the motor base plate 31 can be driven to lift by the push-pull cylinder B 18, 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 B 32, and the motor base plate 31 and the lower end of the chamber 33 are rotatably connected, which improves the stability and sealing performance of the rotation of the inner crushing seat 26, and prevents the material from entering the chamber 33.

[0041] A plurality of connecting rods 14 are evenly distributed in the circumferential direction to improve the stability of the support of 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 gear ring 12 fixed to the inner wall of the upper end of the outer crushing cylinder 19, and the top of the working cylinder 6 is further fixed with a corner support 9, an axle 10 is rotatably installed on the corner support 9, a planetary gear 11 is fixed on the axle 10, and the planetary gear 11 is meshingly connected with the sun gear 13 and the gear ring 12. Among them, the height of the sun gear 13 is greater than the height of the planetary gear 11, which meets the lifting requirement of the inner crushing seat 26, that is, when the inner crushing seat 26 is adjusted, the sun gear 13 can always be meshingly connected 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 gear ring 12 to rotate in the same direction, so that the outer crushing cylinder 19 and the inner crushing seat 26 rotate in opposite directions, which improves the crushing effect and efficiency. In addition, the transmission ratio of the planetary gear assembly is preferably 3:1, which ensures that the rotational speed difference between the outer crushing cylinder 19 and the inner crushing seat 26 is 200-300 rpm.

[0042] As Figures 1-2 , Figures 4-5As shown, in a preferred embodiment of the present invention, the coarse crushing assembly includes a crushing cylinder 17 slidably and rotatably connected to a long sleeve 34. A storage bin 4 is fixed to the top of the crushing cylinder 17, and a material inlet 2 is also provided on the top of the storage bin 4 for easy addition of plastic fragments. A motor A3 is fixed to the middle of the top of the storage bin 4, and a crushing shaft 27 is fixed to the output end of the motor A3. The lower end of the crushing shaft 27 extends to the bottom of the crushing cylinder 17. Multiple sets of crushing components are longitudinally distributed and fixed on the crushing shaft 27 inside the crushing cylinder 17. The crushing components include crushing teeth 28 that are evenly distributed around the outer circumference of the crushing shaft 27 and are conical in shape. The crushing teeth 28 of adjacent sets of crushing components are evenly staggered to improve the thoroughness of crushing. In addition, the crushing particle size can also be changed by controlling the rotation speed of the motor A3, which 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 drop them onto the top of the inner crushing seat 26. The crushing cylinder 17 is slidably and rotatably connected to the long sleeve 34, which can improve the stability of the rotation of the long sleeve 34.

[0043] The lifting component includes a crossbeam 16 that is circumferentially and evenly distributed and fixed to the outside of the crushing cylinder 17. A push-pull cylinder A15 is fixed to the lower side of the outer end of the crossbeam 16. The lower end of the push-pull cylinder A15 is fixed to the top of the working cylinder 6. The distance between the lower end of the crushing cylinder 17 and the inner crushing seat 26 can be adjusted by the push-pull cylinder A15 to achieve the purpose of controlling the crushing particle size.

[0044] In one embodiment, in order to provide safety protection for the device and prevent dust from spreading, a top protective cover 1 is 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 is elastic enough to meet the needs of the storage bin 4 to be adjusted up and down with the crushing cylinder 17. The combination of the top protective cover 1 and the elastic ring 5 provides a more reliable protection and dust prevention effect.

[0045] Preferably, the top protective cover 1 has a built-in dust adsorption module (not shown), which can filter more than 95% of microplastic particles, meeting industrial environmental protection standards.

[0046] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, as a preferred embodiment of the present application, the plastic scrap recycling pretreatment device further comprises a stirring control assembly, the stirring control assembly comprises a transmission ring A 22 fixed to the outside of the outer crushing cylinder 19, the upper side of the transmission ring A 22 is provided with a transmission ring B 37, the outside of the transmission ring B 37 is rotatably installed with a supporting ring 21, the upper side of the supporting ring 21 is circumferentially distributed and fixed with a plurality of push-pull cylinders C 20, the upper end of the push-pull cylinder C 20 is fixed to the inner top of the working cylinder 6, a plurality of transmission teeth A 35 are fixed to the upper side of the transmission ring A 22, a plurality of transmission teeth B 36 matched with the transmission teeth A 35 are fixed to the lower side of the transmission ring B 37, and when the push-pull cylinder C 20 is elongated and the transmission teeth B 36 and the transmission teeth A 35 abut, the transmission ring B 37 rotates synchronously with the transmission ring A 22; a plurality of suspension rods 23 are circumferentially and uniformly distributed and fixed to the lower side of the transmission ring B 37, and the lower end of the suspension rod 23 is fixed with a stirring plate 24 matched with the bottom of the inner cavity of the working cylinder 6. Whether the transmission ring B 37 is in transmission connection with the transmission ring A 22 is controlled by the push-pull cylinder C 20, the supporting ring 21 meets the need of the transmission ring B 37 rotating stably with the transmission ring A 22; when the transmission teeth B 36 and the transmission teeth A 35 abut, the stirring plate 24 is closely matched with the bottom of the inner cavity of the working cylinder 6, which ensures the reliability of the discharging of the stirring from the discharge port 8; the outside of the bottom of the inner cavity of the working cylinder 6 can be rounded, so that the stirring plate 24 is matched and arranged, and material residues are avoided.

[0047] Taking the processing of PET bottle scrap as an example, the material is put into through the material inlet 2, the rotating speed of the motor A 3 is set to 1500 rpm, the distance between the lower end of the coarse crushing assembly 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 processed by the device, the particle uniformity reaches 98%, which can be directly used for recycling and granulation, and meets the recycling standard.

[0048] It has been verified through experiments that the device can improve the particle uniformity of the processed plastic scrap to more than 95% (about 75%-85% for traditional devices) through the cooperation of the coarse crushing assembly and the fine crushing assembly, 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 existing devices.

[0049] The plastic scrap recycling pretreatment device provided in the above embodiments of the present application has the following working principle:

[0050] Firstly, the plastic scrap to be processed is added to the device through the material inlet 2 at the top of the storage bin 4.

[0051] The motor A 3 is started to drive the crushing shaft 27 and the crushing teeth 28 thereon to rotate, and the material transmitted from the storage bin 4 to the crushing cylinder 17 is crushed.

[0052] The broken material is guided to the top of the inner crushing seat 26. The height of the coarse crushing assembly is adjusted by the lifting member (push-pull cylinder A 15 and cross frame 16), the distance between the coarse crushing assembly outlet and the inner crushing seat 26 is changed, the crushing time of the material in the coarse crushing assembly is adjusted, and the particle size and uniformity of the coarse crushing are affected.

[0053] The broken material falls on the inner crushing seat 26 and slides outward under the action of the rotating centrifugal force to enter the space between the outer crushing cylinder 19 and the inner crushing seat 26.

[0054] The lifting drive assembly (push-pull cylinder B 18, motor base plate 31, motor B 32) drives the inner crushing seat 26 to lift and rotate, and the planetary gear assembly (sun gear 13, planetary gear 11, ring gear 12) drives the outer crushing cylinder 19 to rotate in the opposite direction, enhances the shearing and diffusion effect of the material, and improves the crushing efficiency and effect.

[0055] The material that is fully crushed is finally discharged through the discharge port 8 at the bottom of the working cylinder 6. The raking control assembly (drive ring A 22, drive ring B 37, support ring 21, suspension rod 23, raking plate 24) ensures that the material can be reliably discharged from the discharge port 8.

[0056] In summary, the plastic fragment recycling pretreatment device realizes a series of processes from material adding, coarse crushing, fine crushing to final discharge. During the whole process, the device effectively improves the efficiency and precision of plastic fragment processing through the design of mechanical structure, and creates favorable conditions for subsequent recycling.

[0057] The control of each component can be realized by using the PLC controller disclosed in the prior art, and the model and circuit connection of each component are not specifically limited and can be flexibly set in actual application.

[0058] The circuits, electronic components and modules involved are all prior art, and those skilled in the art can realize them without further description. The content protected by the present application does not involve improvement of software and methods.

[0059] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0060] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A plastic scrap recycling pretreatment device, comprising a working cylinder (6), the bottom of the working cylinder (6) is fixed with a supporting leg (7), and the bottom of the working cylinder (6) is also provided with a discharge port (8), characterized in that, Also include: The fine crushing assembly includes an outer crushing cylinder (19) and an inner crushing seat (26), the upper end of the outer crushing cylinder (19) is rotatably connected with the top of the working cylinder (6), the lower part of the outer crushing cylinder (19) is conical, the inner side of the outer crushing cylinder (19) is provided with an inner crushing seat (26) matched with the lower part thereof, the top of the inner crushing seat (26) is fixedly supported by a connecting rod (14) with a long sleeve (34), the long sleeve (34) is drivingly connected with the outer crushing cylinder (19) through a planetary gear assembly; the bottom of the working cylinder (6) is also provided with a lifting driving assembly, the lifting driving assembly is drivingly connected with the inner crushing seat (26), the lifting driving assembly is used for driving the inner crushing seat (26) to lift and rotate, and the outer crushing cylinder (19) is driven by the planetary gear assembly to rotate reversely relative to the inner crushing seat (26); The top of the working cylinder (6) is fixedly supported by a lifting piece with a coarse crushing assembly, the lifting piece is used for driving the coarse crushing assembly to lift, and the coarse crushing assembly is used for crushing plastic fragments and guiding the coarse particles of the crushed plastic fragments to the top of the inner crushing seat (26); The lifting driving assembly includes a push-pull cylinder B (18) fixed in the middle of the inner bottom of the working cylinder (6), the telescopic shaft end of the push-pull cylinder B (18) is fixed with a motor base plate (31); The inner side of the inner crushing seat (26) is provided with a chamber (33) with a lower opening in the middle, the motor base plate (31) is rotatably connected with the lower end of the chamber (33), the upper side of the motor base plate (31) is also fixed with a motor B (32), the motor B (32) is located in the chamber (33), and the output shaft of the motor B (32) is fixedly connected with the top of the chamber (33); The lifting piece includes a transverse frame (16) fixed on the outer side of the crushing cylinder (17) in a circumferential uniform distribution, the outer end of the transverse frame (16) is fixed with a push-pull cylinder A (15) at the lower side, and the lower end of the push-pull cylinder A (15) is fixed to the top of the working cylinder (6).

2. The plastic flake recycling pre-treatment apparatus of claim 1, wherein, The upper part of the outer crushing cylinder (19) is a cylindrical structure, and the upper end of the outer crushing cylinder (19) is rotatably connected with the inner ring of the top of the working cylinder (6); The top of the inner crushing seat (26) is conical structure protruding upward in the middle.

3. The plastic flake recycling pre-treatment apparatus of claim 2, wherein, The lower inner wall of the outer crushing cylinder (19) and the outer side wall of the inner crushing seat (26) are respectively provided with a plurality of semispherical crushing protrusions A (29) and crushing protrusions B (30).

4. The plastic flake recycling pre-treatment apparatus of any of claims 1-3, wherein, The planetary gear assembly includes a sun gear (13) fixed on the outer side of the long sleeve (34) and a gear ring (12) fixed on the inner wall of the upper end of the outer crushing cylinder (19); The top of the working cylinder (6) is also fixed with a corner support (9), an axle rod (10) is rotatably installed on the corner support (9), a planetary gear (11) is fixed on the axle rod (10), and the planetary gear (11) is in meshing connection with the sun gear (13) and the gear ring (12).

5. The plastic flake recycling pre-treatment apparatus of claim 4, wherein, The height of the sun gear (13) is greater than the height of the planetary gear (11); The connecting rod (14) is circumferentially and uniformly distributed.

6. The plastic flake recycling pre-treatment apparatus of any of claims 1-3, wherein, The coarse crushing assembly comprises a crushing cylinder (17) in sliding rotation connection with a long sleeve (34), and a storage bin (4) is fixed to the top of the crushing cylinder (17), and a material inlet (2) is further arranged at the top of the storage bin (4); A motor A (3) is fixed to the middle of the top of the storage bin (4), an output end of the motor A (3) is fixed with a crushing shaft (27), the lower end of the crushing shaft (27) extends to the bottom of the crushing cylinder (17), and a plurality of groups of crushing pieces are fixed on the crushing shaft (27) in the crushing cylinder (17) in longitudinal distribution; The crushing pieces comprise crushing teeth (28) which are uniformly distributed on the outer side of the crushing shaft (27) and have a conical shape; and the crushing teeth (28) of the adjacent two groups of crushing pieces are uniformly staggered.

7. The plastic flake recycling pre-treatment apparatus of claim 6, wherein, A top protection cover (1) is further fixed to the top of the working cylinder (6), and an elastic ring (5) is fixed between the upper end of the top protection cover (1) and the storage bin (4).

8. The plastic flake recycling pre-treatment apparatus of any of claims 1-3, wherein, The plastic fragment recycling pretreatment equipment further comprises a material stirring control assembly, the material stirring control assembly comprises a transmission ring A (22) fixed to the outer side of the outer crushing cylinder (19), a transmission ring B (37) is arranged on the upper side of the transmission ring A (22), a supporting ring (21) is rotatably installed on the outer side of the transmission ring B (37), a plurality of push-pull cylinders C (20) are fixed on the upper side of the supporting ring (21) in circumferential distribution, and the upper end of the push-pull cylinder C (20) is fixed to the inner top of the working cylinder (6); A plurality of transmission teeth A (35) are fixed to the upper side of the transmission ring A (22), a plurality of transmission teeth B (36) matched with the transmission teeth A (35) are fixed to the lower side of the transmission ring B (37), and when the push-pull cylinder C (20) is elongated and the transmission teeth B (36) and the transmission teeth A (35) abut, the transmission ring B (37) rotates synchronously with the transmission ring A (22); A plurality of suspension rods (23) are further fixed to the lower side of the transmission ring B (37) in circumferential uniform distribution, and a material stirring plate (24) matched with 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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