Steel belt reinforced polyethylene spiral corrugated pipe recycling device

Abstract

The application discloses a steel-belt reinforced polyethylene spiral corrugated pipe recycling device and relates to the technical field of plastic processing. The device comprises a support, two hoop frames fixedly installed on the support and a corrugated pipe, further comprises a support base installed on the support and a cross frame fixedly installed between the two hoop frames; the support base is connected with the support through a first propeller, the first propeller is used for driving the support base to move and pushing the corrugated pipe to move, and a push pipe module is installed on the support base through a second propeller. The device has the advantages that the combination of low-temperature quenching and vibration breaking solves the problems of steel scrap pollution, inner layer adhesion and incomplete separation of traditional scraper and hot-roller processes; the arc-shaped box angle and the arc self-adaptive structure are used to adapt to pipes of different specifications and deformation; the multi-dimensional propelling and coaxial positioning modules are used to realize continuous, stable and automatic recycling, efficiently complete independent separation of three layers of materials and significantly improve the quality of regenerated materials and resource utilization.

Description

Technical Field

[0001] This invention relates to the field of plastic processing technology, and in particular to a steel strip reinforced polyethylene spiral corrugated pipe recycling device. Background Technology

[0002] Steel-reinforced polyethylene spiral corrugated pipe is made of an outer PE coating layer, an Ω-shaped spiral steel strip in the middle, and an inner PE matrix, which are bonded together with resin. There is a huge stock of municipal waste pipes and defective pipes from production. Steel-plastic layered recycling is a necessity for resource recycling. The mainstream recycling target in the industry is to accurately separate the outer PE layer, the middle steel strip, and the inner PE layer separately.

[0003] Existing industrial solutions for steel-plastic separation are mainly divided into two categories: scraper cutting and peeling, and hot roller softening and peeling. CN203198097U discloses a device for peeling the outer steel strip of a reinforced polyethylene corrugated pipe spiral, which includes a base, on which a positioning wheel group, a roller group and a traction wheel group are arranged in sequence. The feed end of the traction wheel group is equipped with a scraper, and a heating device for softening the spiral layer is provided between the roller group and the traction wheel group. A collection device is provided below the scraper. The equipment is equipped with a feeding positioning wheel, a heating and softening chamber, and a rear-mounted scraper rapid cooling mechanism. It relies on preheating and softening combined with hard blade cutting to scrape off the outer layer of PE. It is currently the most widely used traditional model in mass production on the market. A heating device is installed between the roller group and the traction wheel group to soften the spiral layer. After the softening effect of the heating device, the scraper can more easily separate the polyethylene plastic and the steel strip, extending the service life of the scraper. At the same time, a collection device is set under the scraper to automatically collect the waste material scraped off by the scraper, which facilitates the collection and classification of waste materials.

[0004] However, in practical use, the aforementioned stripping device involves the blades directly cutting the spiral slope of the corrugated pipe and the outer edge of the steel strip. The high hardness of the steel strip leads to rapid blade wear during the cutting process, requiring frequent machine stops for blade replacement. This results in poor production continuity, low stripping efficiency, and the blades easily splitting the steel strip into fine steel chips. These chips mix with the outer layer of PE debris, making it impossible to completely remove impurities through subsequent magnetic separation. This leads to excessive iron content in the recycled PE, deterioration of melt performance, and a significant drop in granulation grade and product price. Furthermore, the blades easily damage the inner PE pipe wall, causing mixing between the inner and outer layers of PE, making precise separation and recycling of the three layers impossible. Old, buried, and waste pipes are deformed and have collapsed walls; the fixed blades cannot adapt to irregular corrugations, resulting in severe localized stripping residue and excessive residual material. The process employs a pre-heated electric chamber to locally heat and soften the pipe material, followed by pressing with rollers and peeling with a scraper. Heating temperatures typically range from 130℃ to 180℃. The high-temperature heat is continuously conducted radially inward along the steel strip, causing the inner PE layer to soften simultaneously after the steel strip stores heat. The adhesive resin between the steel strip and the inner PE layer melts and adheres, resulting in the outer PE layer being successfully peeled off. However, the molten PE and adhesive layer remain firmly adhered to the inner wall of the steel strip, making subsequent separation difficult and leading to significant inner PE loss. Furthermore, different pipe diameters and corrugated pipes require different custom-designed rollers, resulting in long production changeover and poor versatility. The continuous power consumption of the entire heating line contributes to high production and operating costs. For waste pipes that have been buried underground for a long time, with the adhesive resin hardened, thermal expansion cannot open the steel-plastic interface, leading to roller-pressing peeling failure and a low peeling pass rate.

[0005] Therefore, a new type of steel-reinforced polyethylene spiral corrugated pipe recycling device can be used to address the shortcomings of existing technologies. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art and to propose a steel strip reinforced polyethylene spiral corrugated pipe recycling device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A steel-reinforced polyethylene spiral corrugated pipe recycling device includes a support frame, two hoops fixedly installed on the support frame, and a corrugated pipe, as well as a support mounted on the support frame and a crossbar fixedly installed between the two hoops. The support and the bracket are connected by a first pusher. The first pusher is used to drive the support to move and push the bellows to move. A pusher module is installed on the support by a second pusher. The second pusher is used to adjust the position of the pusher module and drive the pusher module to rotate. The pusher module is used to push the tail of the bellows to move. The bracket is equipped with a coaxial adjustment module to support the middle part of the bellows, ensuring that the bellows is horizontal and coaxial with the pusher module; The crossbeam is equipped with a stripping module that works with the corrugated pipe. The stripping module consists of a rapid cooling mechanism and a vibration mechanism. The rapid cooling mechanism quickly cools the corrugated pipe, and the vibration mechanism breaks the low-temperature corrugated pipe by striking it, thus separating the steel strip.

[0008] Preferably, the push tube module includes a frame fixedly installed at the end of the second pusher, a plurality of swing arms are rotatably installed on the frame, and a plurality of electrically telescopic rods rotatably connected to the corresponding swing arms are rotatably installed on the frame, each swing arm is rotatably installed with a drive wheel, and each drive wheel is driven by a separate drive motor.

[0009] Preferably, the coaxial adjustment module includes two rotating rings rotatably installed in the corresponding hoop, and a support platform is fixedly installed between the two rotating rings. Two rows of moving blocks are slidably installed on the support platform, and two drive rods are fixedly installed at the end of the support platform. The two rows of moving blocks are driven to move on the support platform by the drive rods.

[0010] Preferably, a toothed ring is fixedly installed on one of the rotating rings, and a driver is fixedly installed on the bracket. The driver drives the rotating ring to rotate, thereby driving the support platform to rotate, for detecting coaxiality.

[0011] Preferably, the stripping module further includes a mounting frame mounted on the crossbeam via a third pusher, used to drive the mounting frame to reciprocate on the crossbeam. A support platform is mounted on the mounting frame via a fourth pusher, and the fourth pusher drives the support platform to reciprocate on the mounting frame. A vertical plate is rotatably mounted on the support platform, and the quenching mechanism and the vibration mechanism are both mounted on the vertical plate.

[0012] Preferably, a drive motor is fixedly installed on the support platform, a rotating shaft is fixedly installed on the upright plate, and a circular hole that mates with the rotating shaft is opened on the support platform. The rotating shaft is fitted into the circular hole, and the rotating shaft can not only rotate within the circular hole but also slide within the circular hole. The drive end of the drive motor is connected to the rotating shaft by a belt and a belt roller, wherein the belt roller located on the rotating shaft is slidably connected to the rotating shaft.

[0013] Preferably, the quenching mechanism includes a hydraulic rod fixedly mounted on the support platform, the telescopic end of the hydraulic rod being rotatably connected to a rotating shaft, two clamping arms being rotatably mounted on the upright plate, an arc-shaped box being mounted between the two clamping arms, the arc-shaped box being rotatably connected to both clamping arms, multiple nozzles communicating with the interior of the arc-shaped box being fixedly mounted on each circumference of the arc-shaped box, a material injection pipe being fixedly connected to the top of the arc-shaped box, and an electric push rod being fixedly mounted on the upright plate, the drive end of the electric push rod being connected to the arc-shaped box via a connector.

[0014] Preferably, the vibration mechanism includes a connecting block slidably mounted on the back of the upright plate, the connecting block being fixedly connected to the drive end of the electric push rod, a three-pronged bracket being fixedly mounted on the connecting block, a plurality of sliders being slidably mounted on the three-pronged bracket, a cam being rotatably mounted on each slider, the cam in the middle being driven by a transmission belt to the cams on both sides, a spring rod being installed between each slider and the three-pronged bracket, and a motor being fixedly mounted on the middle slider to drive the middle cam to rotate.

[0015] Preferably, two limiting slide columns are fixedly installed on the connecting block, and multiple limiting slide sleeves that cooperate with the corresponding limiting slide columns are fixedly installed on the upright plate.

[0016] Preferably, two sets of tension retainers that cooperate with the corresponding drive belts are fixedly installed on the tripod to maintain stable power transmission of the drive belts.

[0017] Compared with existing technologies, the advantages of this invention are: 1. This steel-reinforced polyethylene spiral corrugated pipe recycling device abandons the traditional scraper cutting and hot roller softening process. Through a rapid cooling mechanism in the peeling module, a 20-30% ethylene glycol aqueous solution is introduced into the arc-shaped box via an injection pipe and evenly sprayed onto the corrugated pipe surface through nozzles. This rapidly cools the pipe to -40℃ to -80℃, fully embrittles the PE material, concentrates stress at the steel-plastic interface, and then, combined with high-frequency impact from the cam of the vibration mechanism, causes the embrittled outer PE layer to break and detach, while the steel strip separates completely under its own elasticity. This method eliminates blade cutting and high-temperature heating, completely avoiding the problems of steel chips from scrapers mixing into the PE material and the inner PE layer melting and sticking to the steel strip due to hot rollers. It significantly improves the purity of recycled PE and the steel strip recovery rate, ensuring precise separation of the three layers of material.

[0018] 2. This steel-reinforced polyethylene spiral corrugated pipe recycling device uses a drive motor to rotate the shaft, dynamically adjusting the angle between the vertical plate and the arc-shaped box. This ensures the arc-shaped box always maintains a close fit with the spiral raised texture of the corrugated pipe. Simultaneously, relying on the electric actuator and connector structure, the curvature of the raised section in the center of the arc-shaped box can be adjusted in real time, automatically adapting to pipes with different wave heights and pitches. Combined with a coaxial adjustment module, the device provides centered support and horizontal correction for the pipe. Even with old, buried, collapsed, or deformed corrugated pipes, it ensures precise rapid cooling and impact positioning, eliminating the need for tooling changes or manual adjustments, significantly improving the equipment's versatility and adaptability to complex pipe types.

[0019] 3. The steel-reinforced polyethylene spiral corrugated pipe recycling device uses a first pusher to move the support forward as a whole, and a second pusher to adjust the position of the pipe pushing module. The clamping and pushing structure, composed of a frame, swing arm, electric telescopic rod, and drive wheel, can adaptively grip pipes of different diameters and push them stably. The coaxial adjustment module uses a combination of a rotating ring, moving block, and driver to correct the pipe's center axis in real time, ensuring that the pushing process is neither off-center nor jammed. The entire feeding, positioning, and pushing system operates in synergy, achieving continuous and automated operation. This solves the problems of easy jamming, low efficiency, and excessive manual intervention in traditional equipment, significantly improving the recycling line's capacity and operational stability.

[0020] 4. The stripping module in this steel-reinforced polyethylene spiral corrugated pipe recycling device integrates the quenching mechanism and the vibration mechanism into a vertical plate. Multi-directional position adjustment is achieved through a third and fourth pusher, and height fine-tuning is achieved with hydraulic rods. The device features a compact spatial layout and rapid response. The vibration mechanism uses a combination of a three-pronged bracket, cam, transmission belt, and spring rod, coupled with a tension retainer to ensure stable transmission. Limiting slides and sleeves improve motion accuracy. With no easily damaged blades or high-temperature heating components, the core structure experiences minimal wear and low failure rate, significantly reducing equipment maintenance frequency and consumable costs, making it suitable for long-term continuous industrial production.

[0021] 5. This steel-reinforced polyethylene spiral corrugated pipe recycling device can sequentially and completely separate the outer PE layer, the middle steel strip layer, and the inner PE layer. The three materials are collected independently, without mixing or loss, significantly improving the quality of the recycled material. Using ethylene glycol aqueous solution as the refrigerant, its cost is far lower than liquid nitrogen. It is recyclable and produces no pollutants, meeting environmental protection requirements. Combined with fully automated processes including autonomous drive wheel propulsion, self-adaptive arc box fitting, and cam vibration crushing, it eliminates the need for manual cutting and high-temperature energy consumption, improving separation efficiency while reducing operating costs, achieving high-value and green recycling of waste pipe resources. Attached Figure Description

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a steel strip reinforced polyethylene spiral corrugated pipe recycling device proposed in this invention; Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 3 for Figure 2 Detailed schematic diagram of the structure after removing the bellows and rotating it at a certain angle; Figure 4 for Figure 3 Enlarged structural schematic diagram of the first thruster, second thruster, support, and push tube module; Figure 5 for Figure 4 Detailed schematic diagram of the enlarged structure of the push tube module; Figure 6 for Figure 5 Detailed structural diagram of the push tube module after further enlargement; Figure 7 for Figure 1 Enlarged structural schematic diagram of the central support, coaxial adjustment module, cross frame, and stripping module; Figure 8 for Figure 7 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 9 for Figure 7 Enlarged structural schematic diagram of the stripping module and crossbeam; Figure 10 for Figure 9 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 11 for Figure 9 Enlarged schematic diagram of the fourth thruster, quenching mechanism, and mounting bracket; Figure 12 for Figure 11 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 13 for Figure 11 Detailed schematic diagram of the structure after removing the fourth thruster and mounting bracket; Figure 14 for Figure 13 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 15 for Figure 13 Enlarged structural schematic diagram of the center plate and other components mounted on the center plate; Figure 16 for Figure 15 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 17 for Figure 15 Enlarged schematic diagram of the arc-shaped box and nozzle.

[0023] In the diagram: 1. Bracket, 2. Support, 3. Bellows, 4. First pusher, 5. Second pusher, 6. Stripping module, 7. Coaxial adjustment module, 8. Horizontal frame, 9. Third pusher, 10. Push tube module, 11. Drive wheel, 12. Frame, 13. Electric telescopic rod, 14. Swing rod, 15. Hoop, 16. Rotating ring, 17. Moving block, 18. Driver, 19. Fourth pusher, 20. Sudden cooling mechanism, 21. Mounting bracket, 22. Foundation, 23. Drive motor, 24. Hydraulic rod, 25. Vertical plate, 26. Arc box, 27. Injection pipe, 28. Vibration mechanism, 29. Electric push rod, 30. Nozzle, 31. Connecting block, 32. Limiting slide column, 33. Trident bracket, 34. Cam, 35. Drive belt, 36. Spring rod, 37. Tension retainer, 38. Connector. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Refer to Figures 1-8A steel-reinforced polyethylene spiral corrugated pipe recycling device includes a support 1, two hoops 15 fixedly installed on the support 1 and a corrugated pipe 3, and also includes a support 2 installed on the support 1 and a crossbeam 8 fixedly installed between the two hoops 15. The support 2 and the bracket 1 are connected by a first pusher 4. The first pusher 4 is used to drive the support 2 to move and push the bellows 3 to move. A pusher module 10 is installed on the support 2 by a second pusher 5. The second pusher 5 is used to adjust the position of the pusher module 10 and drive the pusher module 10 to rotate. The pusher module 10 is used to push the tail of the bellows 3 to move. The hoop 15 is used to fix the cross frame 8 and provide a rotation support for the coaxial adjustment module 7, improving structural stability; the support 2 is used to support the push tube module 10, realizing forward and backward feeding and position adjustment; The cross frame 8 is used to install the stripping module 6, providing a stable installation benchmark for rapid cooling and vibration separation. This overall layout realizes the separation of the feeding, support and stripping zones. It has a compact structure and uniform stress, solving the problems of insufficient frame rigidity, operation vibration and poor separation accuracy of traditional equipment, and providing a stable mechanical environment for continuous recycling. The first pusher 4 adopts a large-pitch lead screw structure to achieve rapid feeding of the support 2 and improve feeding and retraction efficiency; the second pusher 5 adopts a small-pitch high-precision lead screw to achieve fine adjustment and rotation drive of the push tube module 10 and compensate for the gap error of the first pusher 4. The pusher module 10 acts directly on the tail of the bellows 3, achieving a three-in-one clamping, rotation, and propulsion. The dual pushers work in stages to solve the problems of insufficient precision, easy jamming, and asynchronous rotation of the traditional single pusher. This allows the bellows 3 to rotate and be fed at the same time, so that the rapid cooling and knocking act evenly along the circumference, improving the integrity and stability of the separation.

[0026] A coaxial adjustment module 7 is installed on the bracket 1 to support the middle part of the bellows 3, ensuring that the bellows 3 is horizontal and coaxial with the pusher module 10; The coaxial adjustment module 7 provides multi-point support and center correction for the middle section of the corrugated pipe 3, which counteracts the deviation caused by the pipe's own weight sagging and deformation eccentricity, and ensures that the axis of the corrugated pipe 3 remains coaxial and concentric with the push pipe module 10 and the peeling module 6. The uniform distribution of support force avoids local stress concentration that could lead to pipe wall rupture. This design solves the problems of uneven cooling, knocking deviation, and incomplete separation caused by eccentricity, vibration, and improper fit of old and collapsed pipes. It significantly improves the adaptability to deformed pipes and ensures precise and stable separation position.

[0027] The push tube module 10 includes a frame 12 fixedly installed at the end of the second pusher 5. Multiple swing rods 14 are rotatably installed on the frame 12, and multiple electric telescopic rods 13 rotatably connected to the corresponding swing rods 14 are rotatably installed on the frame 12. Each swing rod 14 is rotatably installed with a drive wheel 11, and each drive wheel 11 is driven by a separate drive motor. The electric telescopic rod 13 pushes the swing arm 14 to open and close, so that the drive wheel 11 adaptively grips the bellows 3 with different inner diameters; Drive wheel 11 is driven by an independent motor, providing stable friction to propel the tube forward and eliminating screw backlash error. This structure achieves adaptive clamping, gapless high-precision propulsion, and synchronous rotation feeding, solving the problems of easy slippage, unstable propulsion, and poor tube diameter adaptability of traditional clamping. It ensures continuous feeding, uniform speed, and accurate positioning, thereby improving separation efficiency and yield.

[0028] The coaxial adjustment module 7 includes two rotating rings 16 rotatably installed in the corresponding hoop 15. A support platform is fixedly installed between the two rotating rings 16. Two rows of moving blocks 17 are slidably installed on the support platform. Two drive rods are fixedly installed at the end of the support platform. The two rows of moving blocks 17 are driven to move on the support platform by the drive rods. The rotating ring 16 can rotate freely within the hoop 15, allowing the support platform to rotate synchronously with the corrugated pipe 3; the moving block 17 moves radially under the push of the drive rod, adapting to different pipe diameters; multi-point support ensures that the corrugated pipe 3 is horizontally centered, not eccentric, and does not sag; This structure solves the problem of peeling failure caused by sagging, eccentricity, and runout in the middle of large-diameter, long-distance pipes, improves coaxiality accuracy, and ensures that the arc-shaped box 26 and cam 34 are always in contact with the corrugated position, thus improving the effects of rapid cooling and impact.

[0029] A toothed ring is fixedly installed on one of the rotating rings 16, and a driver 18 is fixedly installed on the bracket 1. The driver 18 drives the rotating ring 16 to rotate, thereby driving the support platform to rotate, which is used to detect coaxiality. The driver 18 drives the rotating ring 16 to rotate at low speed through the gear ring, which drives the support platform and the moving block 17 to rotate around the bellows in three circumferences, realizing 360° coaxiality detection and dynamic correction; it provides real-time feedback of eccentricity data and automatically adjusts the support position to ensure high-precision coaxiality throughout the entire process. This design solves the problems of low efficiency, poor accuracy and inability to dynamically correct manual inspection, avoids uneven spraying of nozzle 30 and knocking deviation of cam 34 caused by eccentricity, and improves separation stability and purity of three-layer materials.

[0030] Example 2: This example differs from Example 1 in that: (Refer to...) Figures 8-17A stripping module 6 that works with the corrugated pipe 3 is installed on the cross frame 8. The stripping module 6 consists of a rapid cooling mechanism 20 and a vibration mechanism 28. The rapid cooling mechanism 20 quickly cools down the corrugated pipe 3, and the vibration mechanism 28 then breaks the low-temperature corrugated pipe 3 by striking it, thus achieving the separation of the steel strip. The peeling module 6 integrates rapid cooling and vibration functions. The rapid cooling mechanism 20 sprays a -40℃ to -80℃ ethylene glycol aqueous solution onto the outer PE layer to make it brittle. The vibration mechanism 28 strikes at high frequency to break the brittle PE, and the steel strip peels off completely by relying on its own elasticity. This design eliminates the need for scrapers and hot press rollers, thus avoiding problems such as steel chip contamination, molten and adhered inner PE layers, and material mixing at the source. It achieves precise separation of the outer PE layer, steel strip, and inner PE layer, improving the purity of recycled materials and resource utilization.

[0031] The stripping module 6 also includes a mounting frame 21 mounted on the cross frame 8 via a third pusher 9, which drives the mounting frame 21 to reciprocate on the cross frame 8. A support platform 22 is mounted on the mounting frame 21 via a fourth pusher 19. The fourth pusher 19 drives the support platform 22 to reciprocate on the mounting frame 21. A vertical plate 25 is rotatably mounted on the support platform 22. The quenching mechanism 20 and the vibration mechanism 28 are both mounted on the vertical plate 25. The third pusher 9 drives the mounting bracket 21 to move axially along the crossbeam 8, achieving full-process follow-up stripping; the fourth pusher 19 drives the bearing platform 22 to move radially, adapting to different pipe diameters; the vertical plate 25 integrates the rapid cooling mechanism 20 and the vibration mechanism 28, with synchronized action and rapid response. Multi-dimensional adjustment solves the problem that traditional equipment with fixed workstations cannot adapt to different wave heights, pitches, and pipe diameters, improves versatility and automation, reduces changeover and debugging time, and enhances the ability to handle complex pipe materials.

[0032] A drive motor 23 is fixedly installed on the support 22, and a rotating shaft is fixedly installed on the vertical plate 25. A circular hole is opened on the support 22 to cooperate with the rotating shaft. The rotating shaft is sleeved in the circular hole. The rotating shaft can not only rotate in the circular hole, but also slide in the circular hole. The drive end of the drive motor 23 is connected to the rotating shaft by a belt and a belt roller. The belt roller located on the rotating shaft is slidably connected to the rotating shaft. The drive motor 23 drives the rotating shaft to rotate via a belt, adjusting the angle of the upright plate 25 so that the arc-shaped box 26 matches the corrugated pattern; the rotating shaft can slide in conjunction with the hydraulic rod 24 to achieve fine height adjustment; the belt drive ensures stable torque and smooth transmission; This structure enables automatic angle following and precise height adjustment, solving the problems of traditional equipment being unable to adapt to the corrugation angle, poor fit, and uneven cooling, ensuring that the spray and impact always act at the optimal position and improving the separation effect.

[0033] The quenching mechanism 20 includes a hydraulic rod 24 fixedly installed on the support platform 22. The telescopic end of the hydraulic rod 24 is rotatably connected to the rotating shaft. Two clamping arms are rotatably installed on the vertical plate 25. An arc-shaped box 26 is installed between the two clamping arms. The arc-shaped box 26 is rotatably connected to the two clamping arms. Multiple nozzles 30 connected to the inside of the arc-shaped box 26 are fixedly installed in each circle. A material injection pipe 27 is fixedly connected to the top of the arc-shaped box 26. An electric push rod 29 is fixedly installed on the vertical plate 25. The drive end of the electric push rod 29 is connected to the arc-shaped box 26 through a connector 38. The hydraulic rod 24 enables fine adjustment of the height of the arc box 26 to compensate for the error of the lead screw; the electric push rod 29 adjusts the curvature of the arc box 26 to adapt to different wave heights; the injection pipe 27 inputs a low-temperature ethylene glycol aqueous solution, which is uniformly sprayed through the nozzle 30 to rapidly embrittle the outer PE layer. The 26-ring arc-shaped box hugs and fits the pipe, reducing cold loss. This design achieves precise, rapid, and uniform cooling, solving the problems of inner layer adhesion, high energy consumption, and incomplete separation caused by traditional heating. It ensures that the inner PE layer does not become brittle or break, achieving complete separation of the three layers.

[0034] The vibration mechanism 28 includes a connecting block 31 slidably mounted on the back of the upright plate 25. The connecting block 31 is fixedly connected to the drive end of the electric push rod 29. A tripod 33 is fixedly mounted on the connecting block 31. Multiple sliders are slidably mounted on the tripod 33. A cam 34 is rotatably mounted on each slider. The cam 34 in the middle is connected to the cams 34 on both sides by a transmission belt 35. A spring rod 36 is installed between each slider and the tripod 33. A motor is fixedly mounted on the middle slider to drive the middle cam 34 to rotate. The motor drives the cam 34 to rotate, generating a high-frequency impact force; the spring rod 36 provides buffering and reset, and is used for displacement compensation of the cam 34, which can adjust the pressure between the cam 34 and the bellows 3 to avoid rigid impact damage to the pipe; the three-pronged bracket 33 and the slider realize multi-point synchronous impact; the transmission belt 35 ensures that the three cams 34 rotate synchronously; this structure makes the embrittled PE uniformly crushed and the steel strip completely ejected, solving the problems of traditional scraper crushing of steel strip and hot pressure roller sticking to the inner layer, improving separation efficiency and material purity, and reducing equipment failure rate.

[0035] Two limiting slide pins 32 are fixedly installed on the connecting block 31, and multiple limiting slide sleeves that cooperate with the corresponding limiting slide pins 32 are fixedly installed on the upright plate 25. The limiting slide column 32 cooperates with the limiting slide sleeve to restrict the movement direction of the connecting block 31, ensuring that the vibration mechanism 28 moves stably along the set trajectory and avoiding deviation and jamming; it improves the striking position accuracy of the cam 34 and ensures uniform circumferential force. This design solves the problems of vibration mechanism shaking, striking deviation and uneven separation, improves operational stability and service life, and reduces maintenance costs.

[0036] Two sets of tension retainers 37 are fixedly installed on the trident 33 to cooperate with the corresponding drive belt 35, in order to maintain the stability of power transmission of the drive belt 35. The tension retainer 37 automatically compensates for the tightness of the transmission belt 35, preventing slippage, tooth skipping, and belt breakage, and ensuring the synchronous operation of the three cams 34; the striking frequency is stable and the force is uniform, improving the PE crushing effect and the integrity of the steel belt. This structure solves the problems of unstable transmission leading to separation failure, high noise, and short life, ensuring reliable long-term continuous operation and improving the stability and production efficiency of the whole machine.

[0037] The specific operating steps of this device are as follows: First, the corrugated pipe 3 is fitted onto the pusher module 10. Then, the electric telescopic rod 13 is started to drive the swing rod 14 to rotate, so that the drive wheel 11 abuts against the inner wall of the corrugated pipe 3. When the corrugated pipe 3 is pushed, the support 2 is moved and pushed by the first pusher 4. During the pushing process, the pusher module 10 is rotated by the second pusher 5 to realize the rotation and pushing of the corrugated pipe 3. The second thruster 5 can also drive the bellows 3 to move. The main purpose of this design is to improve accuracy, because the screw pitch of the second thruster 5 is smaller than that of the first thruster 4, resulting in higher accuracy. The rotation of the drive wheel 11 will also push the bellows 3 to move. This method is to further improve the propulsion accuracy of the bellows 3, because the wear of the lead screw will cause errors, while the drive wheel 11 will not have any clearance errors. Before feeding, the position of the moving block 17 needs to be adjusted by the drive rod to support the bellows 3, so that the bellows 3 is in a horizontal state and coaxial with the push tube module 10, which can improve the accuracy; at the same time, the driver 18 can also drive the rotating ring 16 to rotate through the gear ring, thereby driving the support table to rotate, which is used to detect the coaxiality of the bellows 3. Next, the third pusher 9 drives the mounting frame 21 to move on the crossbeam 8, and then the fourth pusher 19 drives the support platform 22 to move on the mounting frame 21, changing the horizontal position and vertical height of the arc-shaped box 26 (since the fourth pusher 19 is also a screw pusher, there is an error, so a hydraulic rod 24 is set on the support platform 22 to precisely adjust the vertical height of the arc-shaped box 26). Finally, the angle of the upright plate 25 is adjusted by the drive motor 23, and the degree of protrusion of the arc-shaped box 26 is adjusted by the electric push rod 29 to ensure that the arc-shaped box 26 adapts to the protrusion of the corrugated pipe 3; Finally, a 20-30% ethylene glycol aqueous solution, cooled by a compressor, is injected into the arc-shaped box 26 through the injection pipe 27. The 20-30% ethylene glycol aqueous solution is sprayed onto the outer PE layer of the corrugated pipe 3 through the nozzle 30, rapidly cooling the outer PE layer. At this time, the outer PE layer of the corrugated pipe 3 becomes brittle. Then, the motor is started, driving the cam 34 to rotate and knocking the corrugated pipe 3, causing the brittle outer PE layer to break and fall off. At this time, the steel strip automatically peels off under its own elastic force. Since the inner PE layer is not directly sprayed with the 20-30% ethylene glycol aqueous solution, the temperature does not drop sharply, the brittleness is not obvious, and the knocking will not cause it to break and fall off. However, the connection force between the inner PE layer and the steel strip drops sharply, so the steel strip will automatically peel off under its own elastic force.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel-reinforced polyethylene spiral corrugated pipe recycling device, comprising a support (1), two clamps (15) fixedly mounted on the support (1), and a corrugated pipe (3), characterized in that, It also includes a support (2) installed on the bracket (1) and a crossbeam (8) fixedly installed between the two hoop brackets (15); The support (2) and the bracket (1) are connected by a first pusher (4). The first pusher (4) is used to drive the support (2) to move and push the bellows (3) to move. A pusher module (10) is installed on the support (2) by a second pusher (5). The second pusher (5) is used to adjust the position of the pusher module (10) and drive the pusher module (10) to rotate. The pusher module (10) is used to push the tail of the bellows (3) to move. The bracket (1) is equipped with a coaxial adjustment module (7) to support the middle part of the bellows (3) and ensure that the bellows (3) is horizontal and coaxial with the pusher module (10); The cross frame (8) is equipped with a stripping module (6) that works with the corrugated pipe (3). The stripping module (6) consists of a quenching mechanism (20) and a vibration mechanism (28). The quenching mechanism (20) rapidly cools the corrugated pipe (3), and the vibration mechanism (28) then breaks the low-temperature corrugated pipe (3) by striking it, thus separating the steel strip.

2. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 1, characterized in that, The push tube module (10) includes a frame (12) fixedly installed at the end of the second pusher (5). Multiple swing rods (14) are rotatably installed on the frame (12), and multiple electric telescopic rods (13) rotatably connected to the corresponding swing rods (14) are rotatably installed on the frame (12). Each swing rod (14) is rotatably installed with a drive wheel (11), and each drive wheel (11) is driven by a separate drive motor.

3. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 1, characterized in that, The coaxial adjustment module (7) includes two rotating rings (16) rotatably installed in the corresponding hoop (15). A support platform is fixedly installed between the two rotating rings (16). Two rows of moving blocks (17) are slidably installed on the support platform. Two drive rods are fixedly installed at the end of the support platform. The two rows of moving blocks (17) are driven to move on the support platform by the drive rods.

4. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 3, characterized in that, A toothed ring is fixedly installed on one of the rotating rings (16), and a driver (18) is fixedly installed on the bracket (1). The rotating ring (16) is driven to rotate by the driver (18), thereby driving the support platform to rotate, which is used to detect the coaxiality.

5. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 1, characterized in that, The stripping module (6) also includes a mounting frame (21) mounted on the cross frame (8) via a third pusher (9) for driving the mounting frame (21) to reciprocate on the cross frame (8). A support platform (22) is mounted on the mounting frame (21) via a fourth pusher (19). The fourth pusher (19) drives the support platform (22) to reciprocate on the mounting frame (21). A vertical plate (25) is rotatably mounted on the support platform (22). The quenching mechanism (20) and the vibration mechanism (28) are both mounted on the vertical plate (25).

6. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 5, characterized in that, A drive motor (23) is fixedly installed on the support (22), and a rotating shaft is fixedly installed on the upright plate (25). A circular hole is opened on the support (22) to cooperate with the rotating shaft. The rotating shaft is sleeved in the circular hole. The rotating shaft can not only rotate in the circular hole, but also slide in the circular hole. The drive end of the drive motor (23) is connected to the rotating shaft by a belt and a belt roller. The belt roller located on the rotating shaft is slidably connected to the rotating shaft.

7. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 6, characterized in that, The quenching mechanism (20) includes a hydraulic rod (24) fixedly installed on the support (22). The extension end of the hydraulic rod (24) is rotatably connected to the rotating shaft. Two clamping arms are rotatably installed on the upright plate (25). An arc-shaped box (26) is installed between the two clamping arms. The arc-shaped box (26) is rotatably connected to the two clamping arms. Multiple nozzles (30) connected to the inside of the arc-shaped box (26) are fixedly installed in each circle. A material injection pipe (27) is fixedly connected to the top of the arc-shaped box (26). An electric push rod (29) is fixedly installed on the upright plate (25). The driving end of the electric push rod (29) is connected to the arc-shaped box (26) through a connector (38).

8. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 7, characterized in that, The vibration mechanism (28) includes a connecting block (31) slidably mounted on the back of the upright plate (25). The connecting block (31) is fixedly connected to the driving end of the electric push rod (29). A three-pronged bracket (33) is fixedly mounted on the connecting block (31). Multiple sliders are slidably mounted on the three-pronged bracket (33). A cam (34) is rotatably mounted on each slider. The cam (34) in the middle is driven by a transmission belt (35) to the cams (34) on both sides. A spring rod (36) is installed between each slider and the three-pronged bracket (33). A motor is fixedly mounted on the middle slider to drive the middle cam (34) to rotate.

9. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 7, characterized in that, Two limiting slides (32) are fixedly installed on the connecting block (31), and multiple limiting slide sleeves that cooperate with the corresponding limiting slides (32) are fixedly installed on the upright plate (25).

10. The steel-reinforced polyethylene spiral corrugated pipe recycling device according to claim 7, characterized in that, Two sets of tension retainers (37) that cooperate with the corresponding transmission belts (35) are fixedly installed on the tripod (33) to maintain the stability of the power transmission of the transmission belts (35).

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