A plastic waste pipe crushing and recycling device

Abstract

This invention provides a plastic waste pipe crushing and recycling device, relating to the field of pipe crushing technology. It includes a crushing shell, an inner shell, a feed pipe, a feeding mechanism, and a crushing mechanism. The inner shell is disposed inside the crushing shell and has a discharge space between it and the outer wall of the crushing shell. The crushing mechanism is disposed within the inner shell. The feed pipe has a right-angle structure and its lower end is connected to the upper end of the inner shell. The feeding mechanism is disposed within the feed pipe. This invention employs multi-stage crushing to improve crushing efficiency. Through the combination of hammer rollers, extrusion rollers, and crushing rollers, multi-stage crushing of plastic waste pipes is achieved, enabling more efficient crushing of waste materials into smaller pieces for easier subsequent processing. Furthermore, the pipes are pre-treated by the hammer rollers and extrusion rollers, flattening or breaking larger pieces of material before entering the crushing rollers, reducing the chance of the crushing blades directly contacting hard materials, reducing blade wear, and extending the service life of the equipment.

Description

Technical Field

[0001] This invention relates to the field of pipe crushing technology, and more particularly to a device for crushing and recycling waste plastic pipes. Background Technology

[0002] Plastic pipes refer to pipes made of plastic. They are lightweight, hygienic and safe, have low water flow resistance, save energy, and are safe and convenient, making them popular in the pipeline engineering industry. After being discarded, plastic pipes can be recycled and reused, thus saving resources and materials. In the recycling and processing of used plastic pipes, the pipes need to be crushed to facilitate the reprocessing and pressing of the material.

[0003] For example, CN114770817B discloses an engineering plastic pipe crushing and recycling device, including a crusher body, a shell installed at the top of the crusher body, a feeding structure installed on the shell, a tensioning structure installed on the shell, a conveying structure installed at one end of the crusher body, a fixing structure provided on the conveying structure, a bagging structure provided at the bottom of the crusher body, and a spreading structure installed on the bagging structure. The feeding structure on the shell can carry and feed the pipe to be crushed. While feeding the pipe, the feeding structure can also drive the tensioning structure to work simultaneously. Through the work of the tensioning structure, the pipe can be automatically clamped during feeding to ensure the feeding effect. The clamping is automatically released during resetting, thereby greatly improving the feeding efficiency and safety of the pipe.

[0004] However, existing plastic pipe crushing and recycling devices, including the aforementioned solutions, employ a single crushing method, resulting in low efficiency and susceptibility to problems such as material blockage and incomplete crushing. Furthermore, severe wear on the cutting tools leads to high equipment maintenance costs and poses significant safety risks. For instance, the splashing debris generated during the feeding process not only wastes materials but also poses potential dangers to operators. Existing equipment struggles to meet the requirements of modern recycling processes for high efficiency, low cost, and high safety, and fails to fully realize the potential of waste plastic pipe recycling. Therefore, there is an urgent need for a plastic waste pipe crushing and recycling device to address these issues. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of existing single crushing methods, low efficiency, and easy material blockage and incomplete crushing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a plastic waste pipe crushing and recycling device, comprising a crushing shell, an inner shell, a feeding pipe, a feeding mechanism, and a crushing mechanism. The inner shell is disposed inside the crushing shell and has a discharge space between it and the outer wall of the crushing shell. The crushing mechanism is disposed inside the inner shell. The feeding pipe has a right-angle structure and its lower end is connected to the upper end of the inner shell. The feeding mechanism is disposed inside the feeding pipe. A splash guard is rotatably mounted above the end of the feeding pipe away from the crushing shell. The feeding mechanism includes a hammer roller, a squeeze roller, and a crushing roller. Two hammer rollers, squeeze rollers, and crushing rollers are provided and rotate in opposite directions. The two ends of the hammer roller are rotatably mounted at the feeding end of the feeding pipe. The two hammer rollers are arranged vertically and driven to rotate by a first motor and a second motor, respectively. The two ends of the upper hammer roller are slidably mounted vertically. Inside the feed pipe, eccentric wheels are linked at both ends of the hammer roller. The crushing roller is rotatably mounted on the inner wall of the feed pipe near the crushing shell. Two extrusion rollers are rotatably mounted at the corner of the feed pipe. Guide plates are provided on the inner wall of the feed pipe between the extrusion roller and the hammer roller and the crushing roller. The hammer roller has a first limiting groove at equal intervals, and the extrusion roller has a second limiting groove at equal intervals. The crushing roller is equipped with a cutter. An air cylinder is located at the bottom inside the crushing shell. A piston is slidably sealed inside the air cylinder. The piston is driven to move by a reciprocating mechanism. An air pipe is connected to the air cylinder above the piston. An air chamber is connected to the lower end of the inner shell. An elastic membrane is sealed at the upper edge of the air chamber. The output end of the air pipe extends into the closed space between the elastic membrane and the air chamber. Multiple discharge holes are evenly provided on the side wall of the inner shell. A discharge pipe is located at the lower end of the crushing shell.

[0007] In a preferred embodiment, the inner walls of the feed pipes at both ends of the hammer roller are symmetrically provided with slide rails. The end face of the hammer roller is linked to the eccentric wheel via a rotating shaft. The rotating shaft passes through the slide rails. The first motor is slidably disposed outside the feed pipe. The first motor is linked to the rotating shaft. The upper part of the hammer roller does not contact the upper part of the inner wall of the feed pipe.

[0008] In a preferred embodiment, a rotating block is rotatably provided inside the slide rail. The rotating block is fixedly sleeved outside the rotating shaft and slides up and down inside the slide rail. A sliding plate is provided above the inside of the slide rail via a first spring. The sliding plate is located above the rotating block. A hammer block is provided at the first limiting groove of the hammer roller.

[0009] In a preferred embodiment, a fixed plate is provided above the feed end of the feed pipe, the splash guard is located between the fixed plate and the hammer roller, one side of the splash guard is in contact with the fixed plate, a bracket is provided below the feed pipe inside the splash guard, a through groove is provided between the bottom of the splash guard and the top of the bracket, and a soft pad is provided below the splash guard.

[0010] In a preferred embodiment, the lower part of the inner wall of the feed pipe is inclined, and the hammer roller and the extrusion roller are both located at the inclined position. The second limiting groove of the extrusion roller is provided with meshing teeth and meshing grooves. The meshing teeth and meshing grooves on the two extrusion rollers are meshed together. The extrusion roller and the crushing roller are driven to rotate by a third motor and a fourth motor, respectively.

[0011] In a preferred embodiment, four guide plates are provided and are respectively arranged on the upper and lower sides of the feed pipe between the hammer roller and the extrusion roller and between the extrusion roller and the crushing roller via support frames. The guide plates are arranged in an arc shape and are close to but not in contact with the hammer roller, extrusion roller and crushing roller.

[0012] In a preferred embodiment, the crushing mechanism includes a crushing shaft, a first crushing blade, and a second crushing blade. The first and second crushing blades are disposed on the crushing shaft. There are two crushing shafts, which are respectively tilted and rotatably disposed on the inner shell. One end of the crushing shaft passes through the inner shell and the crushing shell and extends outward. A fifth motor is disposed outside the crushing shell, and the crushing shaft is driven to rotate by the fifth motor.

[0013] In a preferred embodiment, the first crushing blade is disposed at the upper end of the crushing shaft, and the second crushing blade is provided in multiple portions with a diameter smaller than that of the first crushing blade.

[0014] In a preferred embodiment, the reciprocating mechanism includes a shaft and a fixed cylinder. The shaft is rotatably mounted on the inner wall of the crushing housing and is driven to rotate by a sixth motor. The shaft is provided with a set of sliding grooves, which includes an inclined sliding groove, a longitudinal sliding groove, and a transverse sliding groove. One end of the transverse sliding groove is connected to the upper end of the inclined sliding groove, and the lower end of the inclined sliding groove is connected to the lower end of the longitudinal sliding groove. The longitudinal sliding groove is connected to one end of the transverse sliding groove of the next set of sliding grooves. The fixed cylinder is fixedly mounted inside the crushing housing, and a slider is provided inside the cylinder via a second spring. One end of the slider passes through the fixed cylinder and is slidably connected to the set of sliding grooves. The upper part of the slider is assembled and connected to the center position below the piston via a connecting shaft.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] 1. This invention employs multi-stage crushing to improve crushing efficiency. By combining hammer rollers, extrusion rollers, and crushing rollers, multi-stage crushing of waste plastic pipes is achieved, which can more efficiently crush waste materials into small pieces for easier subsequent processing. The cooperation of the air cylinder and piston causes larger pieces that fail to pass through the discharge hole to be bounced back to the crushing mechanism for secondary crushing. The final discharged material consists of fully crushed small pieces, ensuring the quality and uniformity of crushing.

[0017] 2. In this invention, the pipeline is pre-treated by hammer rollers and extrusion rollers, which flatten or crushes larger pieces of material before they enter the crushing rollers, reducing the chance of the crushing blades coming into direct contact with hard materials, reducing blade wear, and extending the service life of the equipment.

[0018] 3. In this invention, a splash guard is installed above the feed pipe to prevent material from splashing during the feeding process, thus protecting the safety of the operators and reducing material loss. During the crushing process, the limit of the pipe by the bracket, splash guard, hammer roller, extrusion roller and crushing roller can greatly reduce the large-scale shaking of the pipe during the crushing process and ensure the safety of crushing.

[0019] 4. In this invention, the unloading space between the inner shell and the outer shell, combined with the evenly distributed discharge holes, allows the crushed material to be discharged quickly, avoiding material blockage during the crushing process and improving the continuous working capacity of the equipment. Attached Figure Description

[0020] Figure 1 A perspective view of a plastic waste pipe crushing and recycling device provided by the present invention;

[0021] Figure 2 A schematic diagram of the internal structure of the crushing shell and inner shell of a plastic waste pipe crushing and recycling device provided by the present invention;

[0022] Figure 3 A schematic diagram showing the positions of the air chamber and air cylinder in a plastic waste pipe crushing and recycling device provided by the present invention;

[0023] Figure 4 A schematic diagram of the reciprocating mechanism of a plastic waste pipe crushing and recycling device provided by the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the fixed cylinder of a plastic waste pipe crushing and recycling device provided by the present invention;

[0025] Figure 6 A schematic diagram of the unfolded state of the chute assembly on the outer surface of the shaft of a plastic waste pipe crushing and recycling device provided by the present invention;

[0026] Figure 7 A schematic diagram of the internal structure of the feed pipe of a plastic waste pipe crushing and recycling device provided by the present invention;

[0027] Figure 8 A schematic diagram of a hammer roller in a plastic waste pipe crushing and recycling device provided by the present invention;

[0028] Figure 9 A schematic diagram of the slide rail and eccentric wheel positions of a plastic waste pipe crushing and recycling device provided by the present invention;

[0029] Figure 10 A schematic diagram of a splash guard plate for a plastic waste pipe crushing and recycling device provided by the present invention;

[0030] Figure 11 A schematic diagram of the extrusion roller of a plastic waste pipe crushing and recycling device provided by the present invention.

[0031] Legend:

[0032] 1. Crushing shell; 101. Air cylinder; 102. Piston; 103. Air pipe; 104. Discharge pipe; 2. Inner shell; 201. Air chamber; 202. Elastic membrane; 203. Discharge hole; 3. Feed pipe; 301. Guide plate; 311. Support frame; 302. Slide rail; 321. Rotating block; 322. First spring; 323. Slide plate; 303. Rotating shaft; 304. Fixing plate; 4. Splash guard; 401. Bracket; 402. Soft pad; 511. Hammer roller; 512. Extrusion roller; 521. Third motor; 522. Fourth motor; 51 3. Crushing roller; 514. Eccentric wheel; 515. First limiting groove; 516. Second limiting groove; 561. Meshing tooth; 562. Meshing groove; 517. Cutting tool; 518. Hammer block; 6. First motor; 7. Second motor; 801. Crushing shaft; 802. First crushing blade; 803. Second crushing blade; 901. Shaft body; 902. Fixed cylinder; 921. Second spring; 922. Slider; 923. Connecting shaft; 903. Inclined slide groove; 904. Longitudinal slide groove; 905. Transverse slide groove; 10. Fifth motor; 11. Sixth motor. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-11This invention provides a technical solution: a plastic waste pipe crushing and recycling device, comprising a crushing shell 1, an inner shell 2, a feed pipe 3, a feeding mechanism, and a crushing mechanism. The inner shell 2 is disposed inside the crushing shell 1 and has a discharge space between it and the outer wall of the crushing shell 1. The crushing mechanism is disposed inside the inner shell 2. The feed pipe 3 has a right-angle structure and its lower end is connected to the upper end of the inner shell 2. The feeding mechanism is disposed inside the feed pipe 3. A splash guard 4 is rotatably provided above the end of the feed pipe 3 away from the crushing shell 1. The feeding mechanism includes a hammer roller 511, a squeeze roller 512, and a crushing roller 513. Two hammer rollers 511, two squeeze rollers 512, and two crushing rollers 513 are provided and rotate in opposite directions. The two ends of the hammer roller 511 are rotatably mounted at the feed end of the feed pipe 3. The two hammer rollers 511 are arranged vertically and driven to rotate by a first motor 6 and a second motor 7, respectively. The upper hammer roller 511 has its two ends sliding vertically within the feed pipe 3. Eccentric wheels 514 are linked to both ends of the hammer roller 511. A crushing roller 513 is rotatably mounted on the inner wall of the feed pipe 3 near one end of the crushing housing 1. Two extrusion rollers 512 are rotatably mounted at the corner of the feed pipe 3. Guide plates 301 are provided on the inner wall of the feed pipe 3 between the extrusion rollers 512 and the hammer rollers 511 and the crushing rollers 513. First limiting grooves 515 are equally spaced on the hammer rollers 511, and second limiting grooves 516 are equally spaced on the extrusion rollers 512. A blade 517 is provided on the crushing rollers 513. An air cylinder 101 is located at the lower part of the crushing housing 1. A piston 102 is slidably sealed inside the air cylinder 101. The piston 102 is driven to move by a reciprocating mechanism. An air pipe 103 is connected to the air cylinder 101 above the piston 102. An air chamber 201 is connected to the lower end of the inner shell 2. An elastic membrane 202 is sealed at the upper edge of the air chamber 201. The output end of the air pipe 103 extends into the closed space between the elastic membrane 202 and the air chamber 201. A plurality of discharge holes 203 are evenly provided on the side wall of the inner shell 2. A discharge pipe 104 is provided at the lower end of the crushing shell 1.

[0035] When crushing plastic pipes, multiple pipes are inserted into the feed end of the feed pipe 3, with each pipe corresponding to a first limiting groove 515. The pipes pass sequentially between two hammer rollers 511, between the extrusion roller 512, and between the crushing roller 513. When passing between the two hammer rollers 511, the hammer rollers 511 vibrate up and down under the rotation of the eccentric wheel 514. The strong vibration can compress the distance between the two hammer rollers 511, thereby squeezing the pipe, flattening it, or directly crushing it. The pipes are continuously pushed into the feed pipe 3, and the rotation of the two hammer rollers 511 guides the pipes deeper into the feed pipe 3. The flattened or crushed pipes are... Under the guiding action of the guide plate 301, the pipe, which has not been completely flattened by the hammer roller 511, is introduced between the two extrusion rollers 512 for further extrusion and crushing. The extrusion rollers 512 are located at the corner of the feed pipe 3, and the pipe needs to be bent at a certain angle when passing between the two extrusion rollers 512, which can further increase the tearing and fragmentation of the pipe. The pipe after being extruded by the extrusion rollers 512 is flat, which makes it easier for the crushing rollers 513 to crush it. The extruded sheet-like pipe and pipe fragments fall between the two crushing rollers 513 under the guiding action of the guide plate 301. The cutters 517 on the two crushing rollers 513 cut the pipe and pipe fragments into smaller pieces. Through the cooperation of the hammer roller 511, the extrusion roller 512, and the crushing roller 513, the pipe can be crushed into small pieces step by step. Finally, the pipe is cut by the cutter 517 on the crushing roller 513, avoiding significant damage to the cutter 517 during direct cutting and extending its service life to a certain extent. The pipe fragments fall into the inner shell 2, and after contacting the crushing mechanism, they are rotated and cut into smaller pieces, which are then thrown out towards the side wall of the inner shell 2. Some of the sufficiently small pieces can pass through the discharge hole 203 on the inner shell 2 into the unloading space, and slide downwards under the action of gravity until they are discharged from the discharge pipe 104. Some fragments that fail to pass through the discharge hole 203 are discharged by gravity. The material slides down to the bottom of the inner shell 2 under the force and falls onto the elastic membrane 202 inside the air chamber 201. By activating the reciprocating mechanism, air is injected into the air chamber 201. The piston 102 moves upward, quickly pushing the air in the air cylinder 101 into the air chamber 201. The elastic membrane 202 is inflated and protrudes into the inner shell 2, which can bounce the large pieces that originally fell onto the elastic membrane 202 back up. The pieces fly upward and scatter, and then come into contact with the crushing mechanism again for further crushing. The above steps are repeated. After inflating the air chamber 201, the air is immediately vented, and then inflated and vented again. By repeating the above steps, the pieces in the inner shell 2 can be bounced up and crushed and discharged repeatedly, ensuring the crushing quality of the pipeline.

[0036] like Figures 1-11The inner walls of the feed pipes 3 at both ends of the upper hammer roller 511 are symmetrically provided with slide rails 302. The end face of the hammer roller 511 is linked to the eccentric wheel 514 through the rotating shaft 303. The rotating shaft 303 passes through the slide rail 302. The first motor 6 is slidably disposed outside the feed pipe 3. The first motor 6 is linked to the rotating shaft 303. The upper part of the upper hammer roller 511 does not contact the upper part of the inner wall of the feed pipe 3. The rotating shaft 303 passes through the slide rail 302 and is linked to the eccentric wheel 514. When the first motor 6 drives the rotation, it drives the rotating shaft 303, the hammer roller 511 and the eccentric wheel 514 to rotate. The hammer roller 511 vibrates while rotating. Due to the upper and lower limit of the rotating shaft 303 by the slide rail 302, the upper hammer roller 511 vibrates up and down while rotating, which can hammer and flatten the pipe passing between the two hammer rollers 511.

[0037] like Figures 1-11 The slide rail 302 is rotatably provided with a rotating block 321. The rotating block 321 is fixedly sleeved on the outside of the rotating shaft 303 and slides up and down inside the slide rail 302. The slide rail 302 is provided with a sliding plate 323 above the inside by a first spring 322. The sliding plate 323 is located above the rotating block 321. The hammer roller 511 is provided with a hammer block 518 at the first limiting groove 515. When the eccentric wheel 514 rotates and drives the rotating shaft 303 to move up and down, it will squeeze and stretch the first spring 322, thereby achieving irregular vibration of the hammer roller 511. In conjunction with the impact of the hammer block 518 on the pipe, the pipe can be flattened and crushed.

[0038] like Figures 1-11 A fixed plate 304 is provided above the feed end of the feed pipe 3. The splash guard 4 is located between the fixed plate 304 and the hammer roller 511. One side of the splash guard 4 is in contact with the fixed plate 304. A bracket 401 is provided below the feed pipe 3 inside the feed pipe 3 below the splash guard 4. A through groove is provided between the lower part of the splash guard 4 and the upper part of the bracket 401. A soft pad 402 is provided below the splash guard 4. Through the cooperation of the splash guard 4 and the bracket 401, the pipe is initially limited during feeding. The material is continuously pushed into the feed pipe 3, and the splash guard 4 is driven to rotate and move at an angle. A certain acute angle will be generated between the splash guard 4 and the fixed plate 304. The fixed plate 304 is used to limit the rotation direction of the splash guard 4. When the debris is generated during the crushing of the pipe, some debris will fly towards the feed end of the feed pipe 3. The splash guard 4 will block it from splashing out. The soft pad 402 can be used to adapt to a certain degree of vibration buffering of the pipe during the hammering process.

[0039] like Figures 1-11The lower part of the inner wall of the feed pipe 3 is inclined. The hammer roller 511 and the extrusion roller 512 are both located at the inclined position. The second limiting groove 516 of the extrusion roller 512 is provided with meshing teeth 561 and meshing grooves 562. The meshing teeth 561 and meshing grooves 562 on the two extrusion rollers 512 are meshed. The extrusion roller 512 and the crushing roller 513 are driven to rotate by the third motor 521 and the fourth motor 522, respectively. The meshing of the meshing teeth 561 and the meshing grooves 562 makes it easy to squeeze or tear the pipe between the two extrusion rollers 512 into small pieces by meshing. By setting the lower part of the inner wall of the feed pipe 3 as an inclined surface, it is easy to guide the splashed debris to the bottom and avoid debris from remaining in the feed pipe 3.

[0040] like Figures 1-11 The guide plates 301 are provided in four and are respectively set on the upper and lower sides of the feed pipe 3 between the hammer roller 511 and the extrusion roller 512 and between the extrusion roller 512 and the crushing roller 513 via support frames 311. The guide plates 301 are arc-shaped and close to but not in contact with the hammer roller 511, the extrusion roller 512 and the crushing roller 513. The guide plates 301 guide the pipe to the next stage.

[0041] like Figures 1-11 The crushing mechanism includes a crushing shaft 801, a first crushing blade 802, and a second crushing blade 803. The first crushing blade 802 and the second crushing blade 803 are mounted on the crushing shaft 801. There are two crushing shafts 801, which are respectively tilted and rotatably mounted on the inner shell 2. One end of the crushing shaft 801 passes through the inner shell 2 and the crushing shell 1 and extends outward. A fifth motor 10 is provided outside the crushing shell 1. The crushing shaft 801 is driven to rotate by the fifth motor 10. The tilted and rotatable arrangement of the crushing shaft 801 inside the inner shell 2 allows for a wider range of contact, cutting, and fragmentation of pipe fragments with the first crushing blade 802 and the second crushing blade 803. Here, the fragments after being crushed by the blades on one crushing shaft 801 are more likely to collide with other blades, increasing the probability of secondary crushing and resulting in a better crushing effect.

[0042] like Figures 1-11 The first crushing blade 802 is disposed on the upper end of the crushing shaft 801. The second crushing blade 803 is provided in multiple portions and its diameter is smaller than that of the first crushing blade 802. The first crushing blade 802 is used to cut the fragments falling from above, and the second crushing blade 803 is used to cut the fragments being pushed up from below.

[0043] like Figures 1-11The reciprocating mechanism includes a shaft 901 and a fixed cylinder 902. The shaft 901 is rotatably mounted on the inner wall of the crushing housing 1 and is driven to rotate by a sixth motor 11. The shaft 901 is provided with a series of sliding grooves, including an inclined sliding groove 903, a longitudinal sliding groove 904, and a transverse sliding groove 905. One end of the transverse sliding groove 905 is connected to the upper end of the inclined sliding groove 903, and the lower end of the inclined sliding groove 903 is connected to the lower end of the longitudinal sliding groove 904. The longitudinal sliding groove 904 is connected to one end of the transverse sliding groove 905 of the next set of sliding grooves. The fixed cylinder 902 is fixedly mounted inside the crushing housing 1, and a slider 922 is provided inside and below via a second spring 921. One end of the slider 922 passes through the fixed cylinder 902 and is slidably connected to the sliding groove group. The upper part of the slider 922 is connected to the [missing information - likely a specific type of sliding groove] via a connecting shaft 923. The piston 102 is assembled and connected at the center position below, driving the sixth motor 11 to drive the shaft 901 to rotate. In the initial state, the second spring 921 pushes the slider 922 to the top. The rotation of the inclined slide 903 squeezes the slider 922 to move down, and the second spring 921 is compressed to the bottom. At this time, the slider 922 rotates from the lower end of the inclined slide 903 to the lower end of the longitudinal slide 904. At this time, the second spring 921 restricts its rapid rebound, driving the slider 922 and the piston 102 above to move up quickly. At this time, the slider 922 is located at the upper end of the longitudinal slide 904. The shaft 901 continues to rotate, and the slider 922 moves on the transverse slide 905 until it moves to the inclined slide 903 and repeats the above steps. Through the rapid rebound of the second spring 921, gas can be quickly filled into the air chamber 201, which facilitates the rapid bounce of the fragments on the elastic membrane 202.

[0044] Working principle: When crushing plastic pipes, multiple pipes are inserted into the feed end of the feed pipe 3, with each pipe corresponding to a first limiting groove 515. The pipes pass between two hammer rollers 511, between the extrusion roller 512, and between the crushing roller 513. When passing between the two hammer rollers 511, the hammer rollers 511 vibrate up and down under the rotation of the eccentric wheel 514. The strong vibration can compress the distance between the two hammer rollers 511, thereby squeezing the pipe, flattening it or crushing it directly. The pipes are continuously pushed into the feed pipe 3, and the rotation of the two hammer rollers 511 guides the pipes deeper into the feed pipe 3, where they are flattened or crushed. The pipe is guided by the guide plate 301 and introduced between the two extrusion rollers 512. The pipe, not fully flattened by the hammer roller 511, is further crushed and broken. The extrusion rollers 512 are located at the corner of the feed pipe 3, and the pipe needs to bend at a certain angle as it passes between the two extrusion rollers 512, further increasing the degree of tearing and fragmentation. The pipe, after being crushed by the extrusion rollers 512, becomes flat, making it easier for the crushing rollers 513 to break it. The crushed sheet-like pipe and pipe fragments fall between the two crushing rollers 513 under the guidance of the guide plate 301. The cutters 517 on the two crushing rollers 513 cut the pipe and pipe fragments into smaller pieces. Small pieces are gradually crushed into smaller pieces by the cooperation of the hammer roller 511, the extrusion roller 512, and the crushing roller 513. Finally, the pieces are cut by the blades 517 on the crushing roller 513, avoiding significant damage to the blades 517 during direct cutting and extending their service life to some extent. Pipe fragments fall into the inner shell 2, where they are rotated and cut into even smaller pieces upon contact with the crushing mechanism. These fragments are then thrown towards the side wall of the inner shell 2. Some sufficiently small pieces can pass through the discharge hole 203 on the inner shell 2 into the unloading space, sliding downwards under gravity and eventually being discharged from the discharge pipe 104. Fragments that fail to pass through the discharge hole 203 are... Under the influence of gravity, the material slides down to the bottom of the inner shell 2 and falls onto the elastic membrane 202 inside the air chamber 201. By activating the reciprocating mechanism, air is pumped into the air chamber 201. The piston 102 moves upward, quickly pushing the air in the air cylinder 101 into the air chamber 201. The elastic membrane 202 is inflated and protrudes into the inner shell 2, which can bounce the large pieces that originally fell onto the elastic membrane 202 back up. The pieces fly upward and scatter, and then come into contact with the crushing mechanism again for further crushing. The above steps are repeated. After pumping air into the air chamber 201, the air is immediately vented, and then pumped and vented again. By repeating the above steps, the pieces in the inner shell 2 can be repeatedly bounced up, crushed, and discharged, ensuring the crushing quality of the pipeline.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A plastic waste pipe crushing and recycling device, characterized in that, The system includes a crushing shell (1), an inner shell (2), a feed pipe (3), a feeding mechanism, and a crushing mechanism. The inner shell (2) is located inside the crushing shell (1) and has a discharge space between it and the outer wall of the crushing shell (1). The crushing mechanism is located inside the inner shell (2). The feed pipe (3) has a right-angle structure and its lower end is connected to the upper end of the inner shell (2). The feeding mechanism is located inside the feed pipe (3). A splash guard (4) is rotatably provided above the end of the feed pipe (3) away from the crushing shell (1). The feeding mechanism includes a hammer roller (511), a squeeze roller (512), and a crushing roller (513). Two hammer rollers (511), two squeeze rollers (512), and two crushing rollers (513) are provided and rotate in opposite directions. The hammer roller (511) is rotatably mounted at both ends of the feed pipe (3). The two hammer rollers (511) are mounted vertically and driven to rotate by the first motor (6) and the second motor (7) respectively. The upper hammer roller (511) is slidably mounted vertically at both ends inside the feed pipe (3). The hammer roller (511) is equipped with eccentric wheels (514) at both ends. The crushing roller (513) is rotatably mounted on the inner wall of the feed pipe (3) near the crushing shell (1). The two extrusion rollers (512) are rotatably mounted at the corner of the feed pipe (3). The inner wall of the feed pipe (3) between the extrusion roller (512) and the hammer roller (511) and the crushing roller (513) is equipped with guide plates (301). (511) A first limiting groove (515) is provided at equal intervals on the upper part, and a second limiting groove (516) is provided at equal intervals on the upper part of the extrusion roller (512). A knife (517) is provided on the crushing roller (513). Slide rails (302) are symmetrically provided on the inner walls of the feed pipes (3) at both ends of the upper hammer roller (511). The end face of the hammer roller (511) is linked with the eccentric wheel (514) through the rotating shaft (303). The rotating shaft (303) passes through the slide rail (302). The first motor (6) is slidably arranged outside the feed pipe (3). The first motor (6) is linked with the rotating shaft (303). The upper part of the upper hammer roller (511) does not contact the upper part of the inner wall of the feed pipe (3). A rotating block (321) is rotatably provided inside the rail (302). The rotating block (321) is fixedly sleeved outside the rotating shaft (303) and slides up and down inside the slide rail (302). A sliding plate (323) is provided above the inside of the slide rail (302) via a first spring (322). The sliding plate (323) is located above the rotating block (321). A hammer block (518) is provided at the first limiting groove (515) of the hammer roller (511). An air cylinder (101) is provided below the inside of the crushing shell (1). A piston (102) is provided in the air cylinder (101) and is sealed and slidably provided inside the air cylinder (101). The piston (102) is driven to move by a reciprocating mechanism. An air pipe (103) is connected to the air cylinder (101) above the piston (102).The lower end of the inner shell (2) is connected to an air chamber (201). An elastic membrane (202) is sealed at the upper edge of the air chamber (201). The output end of the air pipe (103) extends into the closed space between the elastic membrane (202) and the air chamber (201). Multiple discharge holes (203) are evenly provided on the side wall of the inner shell (2). The lower end of the crushing shell (1) is provided with a discharge pipe (104).

2. The plastic waste pipe crushing and recycling device according to claim 1, characterized in that: A fixed plate (304) is provided above the feed end of the feed pipe (3). The splash guard (4) is located between the fixed plate (304) and the hammer roller (511). One side of the splash guard (4) is in contact with the fixed plate (304). A bracket (401) is provided below the feed pipe (3) below the splash guard (4). A through groove is provided between the bottom of the splash guard (4) and the top of the bracket (401). A soft pad (402) is provided below the splash guard (4).

3. The plastic waste pipe crushing and recycling device according to claim 1, characterized in that: The inner wall of the feed pipe (3) is inclined, and the hammer roller (511) and the extrusion roller (512) are both located on the inclined surface. The second limiting groove (516) of the extrusion roller (512) is provided with meshing teeth (561) and meshing groove (562). The meshing teeth (561) and meshing groove (562) on the two extrusion rollers (512) are meshed. The extrusion roller (512) and the crushing roller (513) are driven to rotate by the third motor (521) and the fourth motor (522) respectively.

4. The plastic waste pipe crushing and recycling device according to claim 3, characterized in that: The guide plate (301) is provided in four parts and is respectively set on the upper and lower sides of the feed pipe (3) between the hammer roller (511) and the extrusion roller (512) and between the extrusion roller (512) and the crushing roller (513) via the support frame (311). The guide plate (301) is arc-shaped and close to but not in contact with the hammer roller (511), the extrusion roller (512) and the crushing roller (513).

5. The plastic waste pipe crushing and recycling device according to claim 1, characterized in that: The crushing mechanism includes a crushing shaft (801), a first crushing blade (802), and a second crushing blade (803). The first crushing blade (802) and the second crushing blade (803) are disposed on the crushing shaft (801). There are two crushing shafts (801) and they are respectively tilted and rotatably disposed on the inner shell (2). One end of the crushing shaft (801) passes through the inner shell (2) and the crushing shell (1) and extends outward. A fifth motor (10) is provided outside the crushing shell (1). The crushing shaft (801) is driven to rotate by the fifth motor (10).

6. The plastic waste pipe crushing and recycling device according to claim 5, characterized in that: The first crushing blade (802) is disposed on the upper end of the crushing shaft (801), and the second crushing blade (803) is provided in multiple portions with a diameter smaller than that of the first crushing blade (802).

7. The plastic waste pipe crushing and recycling device according to claim 1, characterized in that: The reciprocating mechanism includes a shaft (901) and a fixed cylinder (902). The shaft (901) is rotatably mounted on the inner wall of the crushing housing (1) and driven to rotate by a sixth motor (11). The shaft (901) is provided with a set of sliding grooves, which includes a slanted sliding groove (903), a longitudinal sliding groove (904), and a transverse sliding groove (905). One end of the transverse sliding groove (905) is connected to the upper end of the slanted sliding groove (903), and the lower end of the slanted sliding groove (903) is connected to the longitudinal sliding groove (902). The lower end of the longitudinal sliding groove (904) is connected to the transverse sliding groove (905) of the next set of sliding grooves. The fixed cylinder (902) is fixedly installed inside the crushing shell (1) and a slider (922) is provided inside the lower part of the shell via a second spring (921). One end of the slider (922) passes through the fixed cylinder (902) and is slidably connected to the sliding groove group. The upper part of the slider (922) is assembled and connected to the center position below the piston (102) via a connecting shaft (923).

Images