Waste recovery device for shoe production

By designing the guiding plastic shaping and grading plastic shaping mechanism, the precise classification problem of plastic pellets in shoe waste is solved, and efficient plastic pellet recycling and quality improvement is achieved.

CN120461628AInactive Publication Date: 2025-08-12JIANGSU JINGFEILONG SAFETY PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202510630285.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-16
Publication Date
2025-08-12
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The prior art cannot effectively classify and pretreat the plastic particles in shoe waste, resulting in inconsistent quality of recycled plastic particles, limiting their application scope.

Method used

A waste recycling device for shoe production is designed, including a material-guided shaping mechanism and a graded shaping mechanism. Through conveyor belt assembly, shaping assembly, graded tumbler and airflow control, preliminary shaping and fine grading of plastic particles is achieved.

Benefits of technology

It improves the quality and recycling efficiency of plastic particles, ensures the consistency and quality of the particle size of plastic particles, and expands its application range.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of shoe waste recovery, and discloses a waste recovery device for shoe production, which comprises a grading shaping mechanism, the grading shaping mechanism comprises a shell, an upper lock catch disc and a lower lock catch disc are symmetrically mounted in the shell, and an air cylinder is arranged between the upper lock catch disc and the lower lock catch disc; an air hole is formed in the side wall of the air cylinder, the center line of the air hole inclines upwards, the air cylinder communicates with an air inlet pipe, the end, away from the air cylinder, of the air inlet pipe penetrates through the shell and is provided with a pressure increasing valve, and a grading rotary drum is jointly installed between the upper lock catch disc and the lower lock catch disc; the end, away from the material distributing hopper, of the material conveying pipe sequentially penetrates through the shell and the upper lock catch disc and communicates with the interior of the grading rotary drum on the innermost layer, guide blades are fixedly connected to the inner top wall of the grading rotary drum on the innermost layer, and grading holes are formed in the side walls of the other grading rotary drums except the grading rotary drum on the outermost layer. According to the characteristics of shoe waste plastic particles, the flow and pressure of internal airflow can be precisely regulated and controlled, and excessive consumption of energy is avoided while the plastic particle grading and shaping requirements are met.
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Description

Technical Field

[0001] The present invention relates to the technical field of shoe waste recycling, in particular to a shoe production waste recycling device. Background Art

[0002] In today's booming footwear industry, shoe production is growing rapidly year by year. However, this prosperity hides a serious problem: the generation of shoe waste has also surged. This waste is extremely complex, with plastics, rubber, fabric, and other materials intertwined and intertwined. Recycling plastics, especially plastic pellets, is fraught with challenges.

[0003] In the recycling of shoe plastic waste, the first step is typically to crush the larger plastic parts into relatively uniformly sized plastic pellets. However, due to the wide variety of shoe waste sources, encompassing a wide range of production batches and usage scenarios, the morphological characteristics of the crushed plastic pellets are extremely complex. These plastic pellets vary in shape, from regular spheres to odd shapes. Their hardness ranges greatly, from soft and pliable to hard and durable. Their particle size distribution is also highly irregular, with large and small particles intermingled. Such complex characteristics make traditional screening equipment inadequate for processing this type of plastic pellet waste. Conventional screening equipment relies solely on simple mesh size screening, making it impossible to precisely classify and screen the plastic pellets based on specific characteristics such as shape, hardness, and particle size. The direct result is significant particle size inconsistency and uneven quality among the recycled plastic pellets. These recycled plastic particles, which are limited by the quality of raw materials, face many difficulties in practical applications. For example, in the production of plastic products with high requirements on raw material quality, these recycled plastic particles cannot be used at all, which greatly limits the application scope of recycled plastic particles.

[0004] An examination of existing shoe waste recycling technologies reveals a common and critical issue: the ineffective pretreatment and accurate classification of the plastic particles contained in the waste. More significantly, the recycling process lacks a purpose-built material guiding and shaping mechanism. This results in the plastic particles being transported to subsequent stages of the recycling process in a disorganized state at the very beginning. This disorganized plastic particle size significantly increases the difficulty and complexity of subsequent grading and shaping, leading to poor grading and shaping results, and further compromising the quality and efficiency of the recycled plastic particles.

[0005] Therefore, it is necessary to provide a shoe production waste recycling device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a waste recycling device for shoe production to solve the existing problems in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a shoe production waste recycling device, comprising a frame, the frame is provided with

[0008] The material guiding and shaping mechanism includes a conveyor belt assembly and a shaping assembly, and the shaping assembly is installed on the conveyor belt assembly;

[0009] A material distribution hopper is provided at the end of the material guiding and shaping mechanism;

[0010] The grading and shaping mechanism is connected with the distribution hopper through a feeding pipe. A feeding pump is installed on the feeding pipe to transport the material from the distribution hopper to the grading and shaping mechanism through the feeding pump.

[0011] As a further solution of the present invention, the conveyor belt assembly includes two symmetrically arranged trusses, a mounting frame is fixedly connected to the trusses, and a material distribution hopper is arranged on the mounting frame, two conveying rollers are symmetrically installed on the trusses, and a conveyor belt is commonly installed on the two conveying rollers, one end of one of the conveying rollers is installed with a first motor, and the upper and lower ends of the two trusses are commonly installed with a shaping connecting plate, and the conveyor belt is mounted on the two shaping connecting plates, and two material guide plates are symmetrically and vertically arranged on the upper shaping connecting plate.

[0012] As a further solution of the present invention, a snap-on fastening frame is fixedly connected to the truss, a connecting bridge is slidably connected to the snap-on fastening frame, a shaping adjustment plate is fixedly connected to the lower end of the connecting bridge, a ball screw and a guide rod are symmetrically and vertically installed on the snap-on fastening frame, and the connecting bridge is installed on the ball screw and the guide rod, and a second motor is installed on the upper end of the ball screw.

[0013] As a further solution of the present invention, the grading and shaping mechanism includes a shell, an upper locking plate and a lower locking plate are symmetrically installed in the shell, an air cylinder is provided between the upper locking plate and the lower locking plate, an air hole is provided on the side wall of the air cylinder, the air cylinder is connected to an air intake pipe, the end of the air intake pipe away from the air cylinder passes through the shell and is installed with a boost valve, a grading drum is installed between the upper locking plate and the lower locking plate, and the end of the feed pipe away from the material hopper passes through the shell and the upper locking plate in sequence and is connected to the interior of the innermost grading drum, and the inner top wall of the innermost grading drum is fixedly connected with a guide vane.

[0014] As a further solution of the present invention, the center line of the air hole is inclined upward.

[0015] As a further solution of the present invention, two adjacent grading drums are connected by a gear adjustment transmission assembly, and grading holes are provided on the side walls of the other grading drums except the outermost grading drum, and an arc-shaped waist hole is provided on the lower end face of the grading drum, and a discharge hole is provided on the lower locking plate. A collecting hopper is provided on the lower end face of the lower locking plate, and the positions of the arc-shaped waist hole, the discharge hole and the collecting hopper correspond to each other. The lower end of the collecting hopper is connected to a discharge pipe, and the discharge pipe passes through the shell and extends outward.

[0016] As a further solution of the present invention, the gear adjustment transmission assembly includes an outer gear ring and an inner gear ring, and the outer gear ring is arranged on the outer wall of other grading drums except the outermost grading drum, and the inner gear ring is arranged on the inner wall of other grading drums except the innermost grading drum, and a transmission gear and a adjustment gear are installed on the inner top wall of the upper locking plate, and the transmission gear is engaged with the outer gear ring and the adjustment gear at the same time, and the adjustment gear is engaged with the inner gear ring.

[0017] As a further solution of the present invention, the apertures of the grading holes decrease from the inside to the outside.

[0018] As a further solution of the present invention, a sealing ring is provided on both the upper locking plate and the lower locking plate, a sealing groove is provided on the outer wall of the grading drum, and the sealing ring is located in the sealing groove, an arc-shaped ring groove is provided on the inner wall of the sealing ring, a rotating ball is provided on the inner wall of the sealing groove through a spherical groove, and the rotating ball is located in the arc-shaped ring groove.

[0019] The material guiding and shaping mechanism provided by the present invention combines a conveyor belt assembly with a shaping assembly, and can stably and efficiently convey plastic particles from the distribution hopper to subsequent processes. At the same time, the two material guiding plates on the shaping connecting plate in the shaping assembly play a good guiding and preliminary regularizing role for the plastic particles, making the distribution of the plastic particles on the conveyor belt more orderly, laying a solid foundation for subsequent fine grading and shaping. The grading and shaping mechanism is connected to the distribution hopper through a feed pipe, and the feed pump is used to transport the plastic particles, so that the plastic particles entering the grading and shaping mechanism are in good condition. Due to the synergistic effect of the early material guiding and shaping mechanism and the distribution hopper, the grading and shaping mechanism can more efficiently perform grading and shaping operations on the plastic particles, and the quality of the plastic particles finally recovered is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 yes Figure 1 Schematic diagram of the structure after removing the rack;

[0023] Figure 3 It is a structural schematic diagram of the material guiding and shaping mechanism in the present invention;

[0024] Figure 4 It is a structural diagram of the shaping component in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the graded shaping mechanism in the present invention;

[0026] Figure 6 This is a schematic structural diagram of the hierarchical shaping mechanism of the present invention in a cutaway state;

[0027] Figure 7 In the present invention Figure 6 sectional view of

[0028] Figure 8 This invention Figure 5 Schematic diagram of the structure after removing the gear adjustment transmission assembly;

[0029] Figure 9 It is a structural diagram of the gear direction adjustment transmission assembly in the present invention;

[0030] Figure 10 It is a structural schematic diagram of the grading drum in the present invention;

[0031] Figure 11 It is a structural schematic diagram of the guide vane in the present invention.

[0032] In the figure: 1 frame, 2 distribution hopper, 3 truss, 4 conveyor belt, 5 shaping connecting plate, 6 guide plate, 7 snap fastening frame, 8 connecting bridge, 9 shaping adjustment plate, 10 ball screw, 11 guide rod, 12 second motor, 13 housing, 14 upper locking plate, 15 lower locking plate, 16 grading drum, 17 air cylinder, 18 air hole, 19 grading hole, 20 arc-shaped waist hole, 21 collecting hopper, 22 discharge pipe, 23 guide vane, 24 intake pipe, 25 boost valve, 26 outer gear ring, 27 inner gear ring, 28 discharge hole, 29 transmission gear, 30 direction adjustment gear, 31 sealing ring, 32 first motor, 33 feed pipe. DETAILED DESCRIPTION

[0033] Example 1

[0034] like Figures 1-4As shown, a waste recycling device for shoe production includes a frame 1, on which a material guiding and shaping mechanism is provided, the material guiding and shaping assembly includes a conveyor belt assembly and a shaping assembly, and the shaping assembly is installed on the conveyor belt assembly, the conveyor belt assembly includes two symmetrically arranged trusses 3, a mounting frame is fixedly connected to the trusses 3, a material dividing hopper 2 is installed on the mounting frame, and the material dividing hopper 2 is arranged at the end of the material guiding and shaping mechanism, two conveying rollers are symmetrically installed on the trusses 3, and a conveyor belt 4 is installed on the two conveying rollers, one end of one of the conveying rollers is installed with a first motor 32, the shaping assembly includes a shaping A connecting plate 5, and the shaping connecting plate 5 is installed between the two trusses 3, and the conveyor belt 4 is sleeved on the shaping connecting plate 5, and two guide plates 6 are symmetrically and vertically arranged on the shaping connecting plate 5, and a snap fastening frame 7 is fixedly connected to the truss 3, and a bridge 8 is slidably connected to the snap fastening frame 7, and the lower end of the bridge 8 is fixedly connected to a shaping adjustment plate 9, and the shaping adjustment plate 9 is located between the two guide plates 6, a ball screw 10 and a guide rod 11 are symmetrically and vertically installed on the snap fastening frame 7, and the bridge 8 is installed on the ball screw 10 and the guide rod 11, and a second motor 12 is installed on the upper end of the ball screw 10;

[0035] The frame 1 is also provided with a grading and shaping mechanism, which is connected to the distribution hopper 2 through a feed pipe 33. A feed pump (not shown in the figure) is installed on the feed pipe 33, and the material is transported from the distribution hopper 2 to the grading and shaping mechanism through the feed pump (not shown in the figure).

[0036] During use, plastic pellets from shoe waste are first fed into a feed hopper 2, which is mounted on a conveyor assembly mounting bracket, which is fixed to a truss 3. A first motor 32 is activated, driving one of the conveyor rollers. Because both conveyor rollers are mounted with a conveyor belt 4, the rotation of the conveyor roller drives the conveyor belt 4 in a circular motion. The plastic pellets fed into the feed hopper 2 land on the conveyor belt 4 and are transported forward as the conveyor belt 4 moves. When the plastic pellets follow the conveyor belt 4 to the shaping assembly, the shaping assembly begins to function. A shaping connecting plate 5 is mounted between the two trusses 3, and the conveyor belt 4 is sleeved onto the shaping connecting plate 5. Two guide plates 6 are symmetrically and vertically arranged on the shaping connecting plate 5. The guide plates 6 guide and constrain the plastic particles. The shaping plate 9 is connected to the snap-fastening frame 7 via a connecting bridge 8, which is fixed to the truss 3. The second motor 12 is activated, driving the ball screw 10 to rotate. Since the connecting bridge 8 is mounted on the ball screw 10 and the guide rod 11 and is slidably connected to the snap-fastening frame 7, the rotation of the ball screw 10 causes the connecting bridge 8 to slide up and down along the guide rod 11, thereby driving the shaping plate 9 to move up and down between the two guide plates 6. By adjusting the height of the shaping plate 9, the accumulation thickness and distribution of the plastic particles during the conveying process can be changed, achieving the desired shaping of the plastic particles. After preliminary processing by the guiding and shaping mechanism, the plastic particles enter the feed pipe 33 through the feed hopper 2. The feed pipe 33 is equipped with a feed pump (not shown). When the feed pump is activated, it generates a certain amount of pressure, transporting the plastic particles from the feed hopper 2 to the grading and shaping mechanism.

[0037] During this process, the shaping assembly plays an important role. The two guide plates 6 on the shaping connecting plate 5 guide and preliminarily regularize the particles, making the distribution of the plastic particles on the conveyor belt more orderly, laying a good foundation for subsequent fine grading and shaping, and improving the efficiency and quality of the overall recycling process. An adjustable shaping adjustment plate 9 is provided, which is connected to the snap fastening frame 7 via a connecting bridge 8, and the height is controlled by a second motor 12 driving a ball screw 10. The operator can flexibly adjust the position of the shaping adjustment plate 9 according to the actual situation of the plastic particles, changing the stacking thickness and distribution state of the plastic particles during the conveying process. Whether it is to address the differences in plastic particles in different batches of shoe waste or to adapt to diverse recycling needs, this flexible adjustment function can ensure that the plastic particles receive just the right initial shaping, enhance the device's adaptability to complex raw materials, and improve the practicality of the overall recycling device.

[0038] After processing through the material guiding and shaping mechanism, the plastic particles have a more regular shape and distribution, and the particle size is initially screened and graded, greatly reducing the workload of the subsequent grading and shaping mechanism. When the plastic particles enter the grading and shaping mechanism through the distribution hopper 2 and the material conveying pipe 33, they can be further graded and shaped more efficiently within each shaping chamber. This not only improves the efficiency of the grading and shaping mechanism, but also improves the quality of the final recycled plastic particles. When processing shoe waste plastic particles, the entire recycling device forms a coherent and efficient process from raw material pretreatment to final product recovery, effectively ensuring the smooth progress of the recycling work.

[0039] Example 2

[0040] Based on the first embodiment, Figure 5-Figure 11As shown, the grading and shaping mechanism includes a shell 13, in which an upper locking disc 14 and a lower locking disc 15 are symmetrically installed. An air cylinder 17 is provided between the upper locking disc 14 and the lower locking disc 15. An air hole 18 is provided on the side wall of the air cylinder 17. The center line of the air hole 18 is tilted upward, so that the air flow ejected from the air hole 18 can act on the material in the grading drum 16 at a specific angle, providing the necessary power conditions for the suspension, grading and shaping of the material. The air cylinder 17 is connected to an air inlet pipe 24. The end of the air inlet pipe 24 away from the air cylinder 17 passes through the shell 13 and is equipped with a boost valve 25. The boost valve 25 The gas pressure entering the air cylinder 17 can be precisely adjusted according to actual working requirements, thereby controlling the strength and speed of the airflow to meet the grading and shaping requirements of different materials. A grading drum 16 is installed between the upper locking plate 14 and the lower locking plate 15. The end of the material conveying pipe 33 away from the distribution hopper 2 sequentially passes through the shell 13 and the upper locking plate 14 and is connected to the interior of the innermost grading drum 16. The inner top wall of the innermost grading drum 16 is fixedly connected with a guide vane 23. When the airflow ejected from the air cylinder 17 hits the guide vane 23 upward, a torque is generated to rotate the grading drum 16, thereby driving the grading drum 16 to rotate. The cam 32 is pressed against the cam 32 and the cam 33 is pressed against the cam 33 to prevent the cam 33 from moving. On the other hand, the rotating balls 32 can roll flexibly in the arc-shaped annular groove, which greatly reduces the friction resistance between the grading drum 16 and the sealing ring 31 during rotation, making the grading drum 16 smoother and more stable during rotation, reducing energy loss, and improving the efficiency and reliability of the device operation.

[0041] Except for the outermost grading drum 16, the side walls of the other grading drums 16 are provided with grading holes 19, and the apertures of the grading holes 19 decrease from the inside to the outside. The lower end face of the grading drum 16 is provided with an arc-shaped waist hole 20, and the lower locking plate 15 is provided with a discharge hole 28. The lower end face of the lower locking plate 15 is provided with a collecting hopper 21, and the positions of the arc-shaped waist hole 20, the discharge hole 28 and the collecting hopper 21 correspond to each other. The lower end of the collecting hopper 21 is connected to a discharge pipe 22, and the discharge pipe 22 passes through the shell 13 and extends outward. When the grading drum 16 rotates to a certain position, the arc-shaped waist hole 20 is aligned with the discharge hole 28, and the graded material will fall into the collecting hopper 21 through the arc-shaped waist hole 20 and the discharge hole 28. The lower end of the collecting hopper 21 is connected to a discharge pipe 22, which passes through the shell 13 and extends outward, and finally transports the classified materials to the subsequent processing links. Intermittent discharge allows the grading drum to have enough time to grade the materials. During the rotation of the grading drum, the materials can be fully screened in the grading drums of different levels. The materials with smaller particle sizes have more time to pass through the grading holes and enter the outer grading drum, while the materials with larger particle sizes can also stay more stably in the current grading drum. If the material is discharged continuously, the material may be discharged before it has time to be fully graded, resulting in a decrease in grading accuracy. Intermittent discharge can prevent the accumulation of materials at the discharge port. If the material is discharged continuously, the material in the collecting hopper and the discharge pipe may be too much due to the excessive discharge speed, causing blockage. Intermittent discharge allows the material to enter the collecting hopper and the discharge pipe regularly, in small amounts and multiple times, maintaining smooth material flow, avoiding blockage, and ensuring the stable operation of the entire recovery device. Intermittent discharge makes the amount of material entering the subsequent processing links relatively stable and controllable. The subsequent processing equipment can be adjusted and optimized accordingly according to the rhythm and amount of intermittent discharge, so as to better process the graded materials further and improve the efficiency and reliability of the entire recycling system. If the discharge is not intermittent, it may bring greater pressure and uncertainty to the subsequent processing links, affecting the processing effect. The two adjacent grading drums 16 are connected by a gear adjustment transmission assembly, and the gear adjustment transmission assembly includes an outer gear ring 26 and an inner gear ring 27, and the outer gear ring 26 is arranged on the outer wall of the other grading drums 16 except the outermost grading drum 16, and the inner gear ring 27 is arranged on the inner wall of the other grading drums 16 except the innermost grading drum 16, and the transmission gear 29 and the adjustment gear 30 are installed on the inner top wall of the upper locking plate 14, and the transmission gear 29 is engaged with the outer gear ring 26 and the adjustment gear 30 at the same time, and the adjustment gear 30 is engaged with the inner gear ring 27.

[0042] When the grading and shaping mechanism is working, the boost valve 25 is first opened, and gas is continuously delivered to the air cylinder 17 through the air inlet pipe 24. The air hole 18 opened on the side wall of the air cylinder 17 with an upward inclined center line will eject the gas in an inclined upward direction. At the same time, the material is transported from the distribution hopper 2 to the inside of the innermost grading drum 16 through the feed pipe 33. The strong upward inclined airflow acts on the material in the grading drum 16, and the material is suspended or semi-suspended due to the upward force of the airflow, which creates ideal conditions for subsequent grading and shaping operations. While the upward airflow acts on the material, it will also impact the guide vanes 23 fixed on the top wall of the innermost grading drum 16. The impact force of the airflow will be converted into a torque that causes the innermost grading drum 16 to rotate around its central axis, thereby driving the innermost grading drum 16 to start rotating.

[0043] Except for the outermost grading drums 16, the sidewalls of all other grading drums 16 are provided with grading holes 19, and the apertures of the grading holes 19 follow a decreasing pattern from the inside to the outside. When the material is suspended or semi-suspended by the airflow within the grading drums 16, the smaller particles, under the combined effects of their own gravity, the impact of the airflow, and the centrifugal force generated by the rotation of the grading drums 16, will first pass through the grading holes 19 on the inner grading drums 16 and enter the adjacent outer grading drums 16. Larger particles, unable to pass through the grading holes 19 of the current grading drum 16, remain in the current grading drum 16. As the grading drums 16 continue to rotate steadily, the material is continuously screened between the grading drums 16 at different levels, thus achieving precise grading based on particle size.

[0044] During the rotation of the grading drum 16, power transmission and direction adjustment are achieved between adjacent grading drums 16 through the gear direction adjustment transmission assembly. When the innermost grading drum 16 begins to rotate under the action of the airflow, the outer gear ring 26 on its outer wall drives the transmission gear 29 to rotate. During the rotation process, the transmission gear 29 transmits power to the direction adjustment gear 30 by meshing with the direction adjustment gear 30. On the other hand, it drives the rotation of the adjacent grading drum 16 by meshing with the outer gear ring 26 on the outer wall of the other grading drum 16. The direction adjustment gear 30, in turn, meshes with the inner gear ring 27, causing the adjacent grading drum 16 to rotate in a different direction from the innermost grading drum 16. This rotation in different directions allows the material to interact more fully with the airflow and the grading holes 19 within the grading drum 16, significantly improving the grading effect.

[0045] After the grading is completed, the material enters the discharging stage. The lower end surface of the grading drum 16 is provided with an arc-shaped waist hole 20, and the lower locking plate 15 is provided with a corresponding discharge hole 28. The lower end surface of the lower locking plate 15 is also provided with a collecting hopper 21, and the positions of the arc-shaped waist hole 20, the discharge hole 28 and the collecting hopper 21 correspond precisely. When the grading drum 16 is rotating, at a specific moment, the arc-shaped waist hole 20 will be completely aligned with the discharge hole 28. At this time, the graded material will fall smoothly into the collecting hopper 21 through the arc-shaped waist hole 20 and the discharge hole 28 under the action of its own gravity. Subsequently, the material is guided by the collection of the collecting hopper 21 and is output to the outside through the discharge pipe 22 through the shell 13. It should be noted that in order to ensure the grading effect and the stability of the device operation, the gas is transported intermittently, that is, the time of delivering the gas and the time of stopping the delivery of the gas are alternated according to a certain rule.

Claims

1. A shoe production waste recycling device, characterized by: The air intake pipe is connected to the air intake tube, and the air intake tube is connected to the air intake tube by a thread-through hole. The air intake tube has an end which is close to the air intake tube and the end is close to the air intake tube. The air intake tube has an end which is close to the air intake tube and the end is close to the air intake tube. The air intake tube has an end which is close to the air intake tube and the end is close to the air intake tube. The air intake tube has an end which is close to the air intake tube and the end is close to the air intake tube. The air intake tube has an end which is close to the air intake tube and the end is close to the air intake tube. The air intake tube has an end which is close to the air intake tube and the end is close to the air intake tube. The air intake tube has an end which is close to the air intake tube and the end is close to the air intake tube. Two adjacent grading drums are connected via a gear direction transmission assembly.

2. The shoe production waste recycling device according to claim 1, characterized in that: The apertures of the grading holes decrease from the inside to the outside. An arc-shaped waist hole is provided on the lower end surface of the grading drum. A discharge hole is provided on the lower locking plate. A collecting hopper is provided on the lower end surface of the lower locking plate. The positions of the arc-shaped waist hole, the discharge hole and the collecting hopper correspond to each other. The lower end of the collecting hopper is connected to a discharge pipe, and the discharge pipe passes through the shell and extends outward.

3. The shoe production waste recycling device according to claim 1, characterized in that: The gear direction adjustment transmission assembly includes an outer gear ring and an inner gear ring, and the outer gear ring is arranged on the outer walls of other grading drums except the outermost grading drum, and the inner gear ring is arranged on the inner walls of other grading drums except the innermost grading drum. A transmission gear and a direction adjustment gear are installed on the inner top wall of the upper locking plate, and the transmission gear is engaged with the outer gear ring and the direction adjustment gear at the same time, and the direction adjustment gear is engaged with the inner gear ring.

4. The shoe production waste recycling device according to claim 1, characterized in that: It also includes a material guiding and shaping mechanism, wherein the material guiding and shaping assembly includes a conveyor belt assembly and a shaping assembly, and the shaping assembly is installed on the conveyor belt assembly; The conveyor belt assembly includes two symmetrically arranged trusses, a mounting frame is fixedly connected to the trusses, and a material distribution hopper is arranged on the mounting frame, two conveying rollers are symmetrically installed on the trusses, and a conveyor belt is commonly installed on the two conveying rollers, and a first motor is installed at one end of one of the conveying rollers. A shaping connecting plate is commonly installed at the upper and lower ends of the two trusses, and the conveyor belt is sleeved on the two shaping connecting plates, and two material guide plates are symmetrically and vertically arranged on the upper shaping connecting plate.

5. The shoe production waste recycling device according to claim 4, characterized in that: A snap-fit fastening frame is fixedly connected to the truss, a connecting bridge is slidably connected to the snap-fit fastening frame, a shaping adjustment plate is fixedly connected to the lower end of the connecting bridge, a ball screw and a guide rod are symmetrically and vertically installed on the snap-fit fastening frame, and the connecting bridge is installed on the ball screw and the guide rod, and a second motor is installed on the upper end of the ball screw.