A bag-making integrated device for recycling waste plastics

Abstract

The application relates to the technical field of recycling equipment, and discloses a waste plastic recycling and bag-making integrated device, which comprises a treatment box, a treatment cavity for cleaning recycled plastic bottles is arranged in the treatment box, the top of the treatment cavity is closed through a closing cover rotationally connected with the treatment box, a crushing box, a base for supporting and fixing the crushing box is fixedly connected to the bottom of the crushing box, and an adhering cleaning mechanism is arranged and used for cleaning and treating adhering pollutants on the inner and outer wall surfaces of the recycled plastic bottles. By increasing and arranging the recycling and processing mechanism, the mechanism adopts a blunt mouth shearing crushing mode of reverse synchronous rotation, which is different from the traditional high-speed sharp cutting crushing mode, can reduce the mechanical damage and local overheating risk of the plastic raw material from the crushing source, can effectively curb the thermal degradation and mechanical rupture of molecular chains, can maximize the retention of the original molecular weight of the plastic, and can improve the tensile strength and toughness of the subsequent bag-making film.

Description

Technical Field

[0001] This invention relates to the field of recycling equipment technology, specifically to an integrated bag-making equipment for recycling and processing waste plastics. Background Technology

[0002] Plastic recycling is an important way to alleviate environmental pollution from plastic products and optimize resource allocation. It also effectively reduces the processing and manufacturing costs of plastic products, demonstrating significant environmental benefits and economic value. In practical recycling applications, plastic beverage bottles are a raw material category with high recycling value. After standardized processing, they can be used as the core raw material, combined with a small amount of auxiliary materials, to produce plastic packaging bags, realizing the resource-based reuse of waste plastics. To ensure that the finished packaging bags have qualified transparency and surface smoothness, meeting basic appearance requirements, existing recycling equipment typically uses high-concentration alkaline solution immersion in the initial processing stage, combined with stirring, kneading, and material collision to deeply clean the residual contaminants adhering to the surface and exterior of the plastic packaging bottles.

[0003] While this traditional cleaning method can achieve a certain level of decontamination, it suffers from unavoidable technical drawbacks. During the soaking, stirring, kneading, and collision processes, the plastic matrix is ​​continuously subjected to strong mechanical forces. Repeated friction and tearing directly damage the internal molecular structure of the plastic, causing physical breakage of the plastic material's molecular chains and impairing the raw material's fundamental properties. Furthermore, in the post-cleaning crushing stage, existing equipment often uses high-speed crushing devices to break the cleaned bottles into granular flakes. The high-speed operation of the crushing components causes localized overheating of the plastic in a short period, not only triggering thermal degradation of the plastic material's molecular chains but also further exacerbating mechanical breakage. This makes it difficult for the recycled plastic to retain its original molecular weight, resulting in a significant decline in the core raw material's performance.

[0004] Due to defects in the initial cleaning and crushing processes, the molecular structure of recycled plastics suffers irreversible damage. Even subsequent processing steps such as melting and adding auxiliary materials cannot compensate for the loss of raw material properties. The resulting plastic packaging bags generally suffer from insufficient tensile strength and poor toughness, failing to meet the mechanical performance requirements for normal use. This not only limits the application scenarios of recycled plastic packaging bags but also hinders the large-scale, high-quality development of the waste plastic recycling industry. Therefore, those skilled in the art have proposed an integrated equipment for recycling and processing waste plastics into bags to solve the aforementioned technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated bag-making equipment for recycling waste plastics, which solves the problems of molecular chain breakage and insufficient mechanical properties of finished products during the recycling process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated bag-making and recycling equipment for waste plastics, comprising, The processing box has a processing chamber for cleaning recycled plastic bottles. The top of the processing chamber is sealed by a rotatable cap connected to the processing box. The crushing box has a base fixedly connected to its bottom for support and fixation. An attachment cleaning mechanism, located inside the processing tank, is used to clean contaminants adhering to the inner and outer surfaces of recycled plastic bottles. The recycling and processing unit, located inside the crushing chamber, is used to crush recycled plastic bottles that have been treated by the attachment cleaning unit before melting them. A temperature maintaining mechanism, located at the top of the crushing chamber, is used to maintain the internal temperature environment during the crushing process of the recycling and processing unit. The micro-dissolution control mechanism, located inside the crushing chamber, is used to prevent the edges of the crushed plastic fragments from being micro-dissolved during the crushing process of the plastic bottle raw materials by the recycling and processing mechanism.

[0007] Preferably, the attachment cleaning mechanism includes a perforated fixing plate. The perforated fixing plate is rotatably connected to the top side of the processing chamber inside the processing box. The perforated fixing plate has multiple sets of openings at equal intervals for fixing the plastic bottles. A ventilated grille is provided on one side of the perforated fixing plate. A high-temperature atomizing spray nozzle is provided in the upper middle part of one side of the inner wall of the processing chamber. A sealing cover for sealing the inside of the processing chamber is rotatably connected to the top of the processing box.

[0008] Preferably, the attachment cleaning mechanism further includes an inclined supply seat. An inclined supply seat is provided at the bottom of the treatment chamber of the treatment box. Multiple mounting seats are fixedly connected at equal intervals on the inclined surface of the inclined supply seat. Multiple pulse vortex nozzles are provided at equal intervals in the middle of each mounting seat. The position and tilt angle of the pulse vortex nozzles correspond to the openings on the multi-hole fixing plate. A collection tank for collecting cleaning wastewater is provided on one side of the top of the inclined supply seat. A drain pipe is provided on one side of the lower middle part of the front end of the treatment box, and one end of the drain pipe is connected to the inside of the collection tank.

[0009] Preferably, the attachment cleaning mechanism further includes an external box. An external box is provided on one side of the lower middle part of the front end of the treatment box, and the interior of the external box is connected to the interior of the inclined supply seat. Multiple sets of airflow guiding and constraining plates for directional collection and constraint of gas entering the bottle are provided at equal intervals at the bottom of the multi-hole fixing plate. A multi-head pipe connected to an external high-pressure water source and a high-pressure gas source is provided on the external box. A three-way solenoid valve that can switch the type of high-pressure energy to be discharged is provided at the intersection and concentration position of the multi-head pipe.

[0010] Preferably, the recycling and processing mechanism includes a guide box, with the front center of the crushing box connected to the guide box. A sealing cover is provided on the end of the guide box away from the crushing box. Two rotating seats are rotatably connected to the bottom of the inner side of the crushing box. Multiple blunt-edged shear seats are alternately arranged on the outer wall of the rotating seats. Synchronous drivers are provided on the front and rear bottom sides of the crushing box to control and drive the two rotating seats to rotate in the same direction.

[0011] Preferably, the temperature maintaining mechanism includes a one-way vent seat, a one-way vent seat that allows external gas to enter the crushing box in one direction at the upper front part of the crushing box, a separation box at the top center of the crushing box, and a connecting box at the top rear side of the crushing box, with both ends of the connecting box communicating with the interior of the crushing box and the separation box respectively.

[0012] Preferably, the temperature maintaining mechanism further includes a pull-out seat, which is slidably connected to the middle of one side of the separation box. Multiple cotton collection seats are equidistantly arranged on the top of the pull-out seat, and a negative pressure fan for drawing out and discharging the gas inside the separation box is arranged in the middle of the front side of the separation box.

[0013] Preferably, the micro-dissolving control mechanism includes a connecting seat, and connecting seats are provided at the bottom of both the front and rear sides of the crushing box. Rotary sealing ring seats are provided at both ends of the rotating seat. A circulating cooling pump is provided in the middle of one side of the crushing box. The inlet and outlet of the circulating cooling pump are respectively connected to the interior of the connecting seats on both sides through corresponding flow pipes.

[0014] Preferably, the micro-dissolving control mechanism further includes a central column, and a central column is provided in the middle of the inner side of the rotating seat. The outer wall of the central column and the inner wall of the rotating seat form a contact conduction cavity. The contact conduction cavity is connected to the interior of the connecting seats on both sides. A discharge seat for discharging crushed plastic fragments is provided in the middle of the side of the crushing box away from the circulating cooling pump.

[0015] Working principle: After recycling the waste plastic beverage bottles, the staff first thoroughly empties the residual waste liquid inside the bottles, then peels off the plastic caps and outer packaging films from the bottles one by one and collects them for disposal. After the sorting and peeling operation is completed, the staff uses a high-pressure water gun to pre-wash the inside and outside of the bottles to remove surface dust and simple attachments. Then, the bottles are air-dried. Only plastic beverage bottles that have passed this front-end pre-treatment process can enter the subsequent standardized recycling and processing stage. When proceeding to the subsequent recycling and processing stage, the attachment cleaning mechanism is first activated. Workers smoothly open the top cover of the processing tank, then invert the pre-treated plastic beverage bottles and precisely insert them into the pre-set holes on the perforated fixing plate. These holes provide stable positioning for the bottles, preparing them for subsequent cleaning operations. Once all bottles are in place, the cover is closed, creating a sealed working space within the processing chamber. This ensures stable operation of the subsequent steam immersion and rinsing processes. At this point, the high-temperature atomizing spray nozzle on the processing tank activates, simultaneously spraying high-temperature atomized steam. The high-temperature atomized steam located at the bottom of the perforated fixing plate flows evenly upwards through the permeable grille, dispersing throughout the sealed processing chamber. As steam accumulates in the sealed space, the high-temperature atomized steam effectively immerses the stubborn contaminants adhering to the inner and outer walls of the plastic beverage bottles, softening and loosening them, clearing obstacles for subsequent deep cleaning. Furthermore, it also... By gradually increasing the initial temperature of the bottle body, the bottle material becomes more suitable for subsequent crushing and processing. This atomized immersion softening and impurity removal method eliminates the need for the traditional process of prolonged high-temperature and high-concentration alkaline immersion. It can significantly reduce the corrosive damage of thermo-oxidative aging reactions and chemical agents to the plastic molecular chains, and fundamentally prevent the molecular chains from degrading and breaking due to excessive heat and chemical erosion. After the high-temperature atomized steam front-end immersion treatment is completed, the staff starts the external high-pressure water supply equipment through the control equipment. The high-pressure water source is transported to the outside box through a multi-head pipe, and then guided from the outside box to the inclined supply seat in the treatment box. Finally, it is sprayed directionally onto the bottle mouth and surrounding area of ​​the inverted bottle body through the pulse vortex nozzle on the mounting base. The impact force of the pulsed high-pressure vortex water flow is used to thoroughly wash and clean the stubborn adhering substances remaining inside the bottle body and at the bottle mouth. Thanks to the inclined structure design of the porous fixing plate, the cleaning wastewater flowing out of the bottle mouth will not collide with the high-pressure cleaning water sprayed from the nozzle, ensuring that the rinsing efficiency is not affected.After rinsing, the wastewater flows down the inclined slope of the sloping supply seat into the collection tank for centralized collection. It is then discharged through the drain pipe on the treatment tank for unified disposal. After the high-pressure water rinsing process of the plastic beverage bottles is completed, the staff activates the three-way solenoid valve on the multi-head pipe using the control equipment. The solenoid valve immediately cuts off the high-pressure water supply connection and simultaneously opens the connection between the external high-pressure air source and the external box. The high-pressure air source enters the external box through the multi-head pipe and is then delivered to the sloping supply seat inside the treatment tank. Finally, the pulse swirling nozzle on the mounting base sprays pulse swirling airflow around the bottle opening of the inverted bottle. Simultaneously, the multi-hole fixing... The airflow guiding and restraining plate at the bottom of the plate fits tightly against the edge of the bottle opening, directionally gathering and sealing the airflow entering the bottle, preventing airflow leakage and loss from the bottle opening perimeter. Furthermore, the restraining plate's built-in elastic positioning and support function provides a small range of flexible movement for the bottle without damaging it. The periodic swirling airflow output from the pulsed vortex nozzle creates a continuous reciprocating oscillation effect inside the bottle, causing it to resonate. This resonance force thoroughly removes stubborn impurities from within, eliminating the need for mechanical scraping, grinding, or other hard contact methods. This effectively prevents micro-cracks in the inner plastic wall and damage to the substrate, protecting the bottle from the inside. The intact molecular chain structure prevents minor defects from further breaking the molecular chains, thus completing the entire process of attachment cleaning before processing recycled plastic bottles. The recycling and processing mechanism then activates. After the plastic beverage bottles in the processing tank have been cleaned, workers remove the cleaned bottles one by one and place them into the guide box. The bottles smoothly enter the crushing chamber along the guide structure. Once all the bottles to be crushed have been placed in, workers seal the top of the guide box with a sealing cap to ensure the airtightness of the crushing chamber and prevent debris leakage during crushing. Immediately afterwards, the synchronous drive on the crushing chamber is activated, driving the crushing process... The rotating seat of the part rotates synchronously in the opposite direction. When the rotating seat is running, it drives the blunt shear seat on it to rotate at a low speed and smoothly. The plastic bottles in the crushing box are crushed by blunt shearing. Compared with sharp cutting, the blunt shearing mode of the blunt shear seat can significantly reduce the problem of local overheating and molecular chain breakage of plastic. It can curb the thermal degradation and mechanical breakage of molecular chains from the source of crushing, and retain the original molecular weight of plastic to the maximum extent, thereby improving the tensile strength and toughness of the subsequent bag film. On the other hand, it can also avoid the plastic surface from melting and sticking due to high temperature, reduce the clumping of particles after crushing, and successfully complete the crushing operation of recycled plastic bottles.Simultaneously, the temperature maintenance mechanism starts. During the crushing operation of the recycling and processing mechanism, the negative pressure fan on the separation box starts running, continuously drawing air out of the separation box to create a stable negative pressure state inside. Influenced by the external air pressure difference, ambient air enters the crushing box cavity cleanly after being filtered by the one-way ventilation seat. The air inside the crushing box then flows into the separation box through the connecting box and is finally drawn out by the negative pressure fan. The clean air introduced by the one-way ventilation seat, during its flow, can, on the one hand, promptly remove the heat generated by friction inside the crushing box, maintaining a suitable temperature environment; on the other hand, it can also carry away plastic dust and fine impurities generated during crushing. After entering the separation box, the air carrying impurities is filtered, collected, and separated by the collection cotton seat on the pull-out seat, achieving a dual effect of temperature control and impurity removal during the crushing process. Simultaneously, the micro-dissolving control mechanism starts. During the crushing operation of the recycling and processing mechanism, the blunt-edged shear seat on the rotating seat frequently rubs against the plastic material, generating… The heat is rapidly absorbed by the coolant in the contact conduction cavity inside the rotating seat. The coolant's temperature gradually rises after absorbing heat, preventing localized frictional overheating during low-speed shearing, thus avoiding micro-melting and adhesion of the plastic, molecular chain thermal degradation, and preventing heat accumulation in the rotating seat that could cause plastic particles to clump and agglomerate. This reduces secondary thermal damage during subsequent processing. During operation, the rotating seat relies on the rotating sealing rings at both ends to ensure the rotational flexibility and airtightness of the contact conduction cavity. Simultaneously, the circulating cooling pump and flow pipe work together to circulate and cool the coolant in the contact conduction cavity and the connecting seats at both ends, ensuring that the crushed plastic fragments do not melt and adhere throughout the process, and that the crushed particles are independent and regular in shape, preventing agglomeration problems during subsequent cleaning and granulation. The temperature-controlled crushed material suffers no thermal damage, resulting in higher melt strength during subsequent bag making, effectively guaranteeing the tensile and tear resistance mechanical properties of the film. This completes the micro-melting control process during plastic fragment crushing. After the plastic bottles in the crushing chamber are completely crushed to the required standard, the resulting plastic flakes are discharged through the discharge seat and conveyed to the melting equipment for melting and processing. The molten material is then processed by a blown film machine to form plastic packaging bags, completing the entire plastic recycling and bag making process.

[0016] This invention provides an integrated bag-making device for recycling and processing waste plastics. It has the following beneficial effects: 1. This invention, by adding and setting an attachment cleaning mechanism, employs a cleaning method combining high-temperature atomization wetting, pulse swirling rinsing, and airflow resonance impurity removal before reprocessing recycled plastics. On the one hand, it abandons the traditional treatment mode of soaking in high-concentration alkaline solution combined with mechanical stirring and kneading. It relies on steam to soften contaminants and airflow resonance to peel off stubborn impurities inside the bottle. There is no hard contact mechanical external force throughout the process, which can avoid the plastic matrix being torn by friction and generate micro-cracks. It protects the integrity of the molecular chain structure from the source and prevents the molecular chain from physical breakage and chemical degradation. On the other hand, the steam treatment in the sealed space can raise the temperature of the bottle in advance, making it more suitable for subsequent crushing and processing. The inclined structure design can also avoid the washing water flow from clashing, ensuring rinsing efficiency. The centralized collection and discharge of wastewater can reduce pollution, allowing the recycled plastic to retain its original molecular properties and providing clean and stable raw materials for subsequent bag making processing.

[0017] 2. By adding and setting up a recycling processing mechanism, this invention employs a reverse synchronous rotation blunt-jaw shearing crushing mode when reprocessing recycled plastics. This not only differs from the traditional high-speed sharp-cut crushing method, reducing mechanical damage and local overheating risks to plastic raw materials from the source of crushing, but also effectively inhibits the thermal degradation and mechanical breakage of molecular chains, maximizing the preservation of the original molecular weight of the plastic and improving the tensile strength and toughness of the subsequent bag film. Moreover, the blunt-jaw shearing operation method can avoid the plastic surface from melting and sticking due to high temperature, reducing the problem of particle agglomeration after crushing, and making the crushed plastic fragments more regular in shape. At the same time, the enclosed working environment can prevent debris leakage, improve the cleanliness of equipment operation, and make the crushing and processing of recycled plastics more in line with the needs of high-quality recycling processing, ensuring the quality stability of the subsequent bag products.

[0018] 3. By adding and setting a temperature-maintaining mechanism, this invention, when reprocessing recycled plastics, utilizes negative pressure air cooling and impurity separation in synergy. Firstly, it continuously removes the frictional heat generated during crushing, maintaining a stable temperature environment within the crushing chamber. This effectively avoids the problem of plastic thermal degradation caused by localized heat accumulation, protecting the plastic molecular chains from high-temperature damage. Secondly, it uses airflow to carry away micro-dust and fine impurities generated during crushing. After separation and collection by the filter component, it prevents micro-dust and fine debris from re-attaching to the surface of the plastic fragments, reducing the impurity load in subsequent processing and preventing impurities from mixing into the melt and forming processing defects. This mechanism achieves dual functions of temperature control and impurity removal, ensuring the performance integrity of the plastic raw materials while improving the cleanliness of the crushed raw materials, laying a good foundation for subsequent melting, blown film, and bag-making processes.

[0019] 4. By adding and setting a micro-melting control mechanism, this invention, during the reprocessing of recycled plastics, utilizes a precise temperature control method through internal circulating cooling. This not only rapidly absorbs the localized heat generated by the friction between the crushed parts and the plastic, preventing the plastic fragments from micro-melting and sticking together, but also avoids the problem of plastic particle agglomeration caused by heat accumulation in the parts. This ensures that the crushed particles are independent and regular in shape. Furthermore, the circulating cooling system can exchange heat and cool down in real time, and the sealed structure ensures the stable operation of the cooling chamber, eliminating secondary thermal damage during the crushing process. This keeps the molecular structure of the recycled plastic intact, and the crushed material processed by this mechanism is free from thermal degradation damage. During subsequent bag making, the melt strength is higher, which can effectively improve the tensile and tear resistance of plastic packaging bags, solving the problem of insufficient mechanical properties of finished products caused by traditional crushing processes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a cross-sectional view of the internal structure of the processing box of the present invention; Figure 4 This is a partial structural diagram of the crushing box of the present invention; Figure 5 This is a schematic diagram of the pull-out base in its unfolded state according to the present invention; Figure 6 This is a cross-sectional view of the internal structure of the crushing chamber of the present invention; Figure 7 This is a partial structural diagram of the rotating seat of the present invention; Figure 8 This is a cross-sectional schematic diagram of the internal structure of the rotating seat of the present invention.

[0021] The components are as follows: 1. Processing box; 2. Multi-head pipe; 3. Three-way solenoid valve; 4. External connection box; 5. Sewage pipe; 6. High-temperature atomizing spray nozzle; 7. Base; 8. Discharge seat; 9. Crushing box; 10. Connection box; 11. Separation box; 12. Sealing cover; 13. Guide box; 14. Sealing cover; 15. Synchronous driver; 16. Connecting seat; 17. Flow pipe; 18. Circulating cooling pump; 19. Ventilation grille; 20. Perforated fixing plate; 21. Airflow guiding constraint plate; 22. Pulse swirl nozzle; 23. Mounting seat; 24. Inclined supply seat; 25. Collection trough; 26. One-way ventilation seat; 27. Pull-out seat; 28. Negative pressure fan; 29. ​​Cotton collection seat; 30. Blunt shear seat; 31. Rotating seat; 32. Rotating sealing ring seat; 33. Central column; 34. Contact conduction cavity. Detailed Implementation

[0022] The technical solutions in 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.

[0023] Please see the appendix Figure 1 -Appendix Figure 2 This invention provides an integrated bag-making equipment for recycling waste plastics, including a processing box 1, which has a processing chamber for cleaning recycled plastic bottles. The top of the processing chamber is closed by a sealing cover 12 that is rotatably connected to the processing box 1; and a crushing box 9, the bottom of which is fixedly connected to a base 7 for supporting and fixing it. Please see the appendix Figure 3 An attachment cleaning mechanism, which is installed inside the processing box 1, is used to clean contaminants attached to the inner and outer surfaces of recycled plastic bottles. The attachment cleaning mechanism includes a perforated fixing plate 20. The perforated fixing plate 20 is rotatably connected to the top side of the treatment chamber inside the treatment box 1. The perforated fixing plate 20 has multiple sets of openings for fixing plastic bottles at equal intervals. A ventilated grille 19 is provided on one side of the perforated fixing plate 20. A high-temperature atomizing spray nozzle 6 is provided in the upper middle part of one side of the inner wall of the treatment chamber. A sealing cover 12 for sealing the inside of the treatment chamber is rotatably connected to the top of the treatment box 1.

[0024] When the attachment cleaning mechanism is started, the staff first smoothly opens the sealing cover 12 on the top of the treatment box 1, and then inserts the plastic beverage bottle that has completed the preliminary treatment into the preset opening position on the multi-hole fixing plate 20 in an inverted position. The opening position is used to achieve stable positioning of the bottle, which is ready for subsequent cleaning operations. After all the bottles are fixed in place, the staff resets and closes the sealing cover 12, so that the treatment chamber inside the treatment box 1 forms a sealed working space, ensuring the stable operation of the subsequent steam immersion and rinsing process.

[0025] At this time, the high-temperature atomizing spray nozzle 6 on the treatment chamber 1 starts operation, simultaneously spraying high-temperature atomized steam outward. The high-temperature atomized steam located at the bottom of the porous fixed plate 20 will flow evenly upward through the ventilated grille 19 on the plate and diffuse into the entire sealed treatment chamber. As the steam continues to accumulate in the sealed space, the high-temperature atomized steam can fully wet the stubborn pollutants attached to the inner and outer walls of the plastic beverage bottle, softening and loosening them, clearing obstacles for subsequent deep cleaning. On the other hand, it can also gradually increase the initial temperature of the bottle as a whole, making the bottle material more suitable for subsequent crushing processing. This atomized wetting softening and impurity removal method does not require the traditional process of long-term high-temperature and high-concentration alkaline solution soaking. It can significantly reduce the corrosive damage of thermo-oxidative aging reaction and chemical agents to the plastic molecular chain, and fundamentally avoid the degradation and breakage of the molecular chain due to excessive heat and chemical erosion.

[0026] The attachment cleaning mechanism also includes an inclined supply seat 24. An inclined supply seat 24 is provided at the bottom of the treatment chamber of the treatment box 1. Multiple mounting seats 23 are fixedly connected at equal intervals on the inclined surface of the inclined supply seat 24. Multiple pulse vortex nozzles 22 are provided at equal intervals in the middle of the mounting seats 23. The position and tilt angle of the pulse vortex nozzles 22 correspond to the openings on the perforated fixing plate 20. A collection tank 25 for collecting cleaning wastewater is provided on one side of the top of the inclined supply seat 24. A drain pipe 5 is provided on one side of the lower middle part of the front end of the treatment box 1. One end of the drain pipe 5 is connected to the inside of the collection tank 25.

[0027] After the high-temperature atomized steam front-end immersion treatment is completed, the staff starts the external high-pressure water supply equipment through the control device. The high-pressure water source is transported to the external box 4 through the multi-head pipe 2, and then guided from the external box 4 to the inclined supply seat 24 in the treatment box 1. Finally, it is sprayed directionally to the bottle mouth and surrounding area of ​​the inverted bottle through the pulse vortex nozzle 22 on the mounting base 23. The impact force of the pulse high-pressure vortex water flow is used to thoroughly rinse and clean the stubborn attachments remaining inside the bottle and at the bottle mouth. Thanks to the inclined structure design of the porous fixing plate 20, the cleaning wastewater flowing out of the bottle mouth will not collide with the high-pressure cleaning water sprayed from the nozzle, ensuring that the rinsing efficiency is not affected. After rinsing, the wastewater flows into the collection tank 25 along the inclined slope of the inclined supply seat 24 for centralized collection, and is finally discharged and disposed of through the sewage pipe 5 on the treatment box 1.

[0028] The attachment cleaning mechanism also includes an external box 4. An external box 4 is provided on one side of the lower middle part of the front end of the treatment box 1, and the interior of the external box 4 is connected to the interior of the inclined supply seat 24. Multiple sets of airflow guiding and restraining plates 21 for directional collection and restraint of gas entering the bottle are provided at equal intervals at the bottom of the multi-hole fixing plate 20. A multi-head pipe 2 connected to an external high-pressure water source and a high-pressure gas source is provided on the external box 4. A three-way solenoid valve 3 that can switch the type of high-pressure energy to be discharged is provided at the intersection and concentration position of the multi-head pipe 2.

[0029] After the high-pressure water rinsing process of the plastic beverage bottle is completed, the staff activates the three-way solenoid valve 3 on the multi-head pipe 2 through the control equipment. After the solenoid valve is activated, it immediately cuts off the high-pressure water source connection channel and simultaneously opens the connection channel between the external high-pressure air source and the external box 4. The high-pressure air source enters the external box 4 through the multi-head pipe 2 and is then transported to the inclined supply seat 24 in the processing box 1. Finally, the pulse swirling nozzle 22 on the mounting seat 23 sprays pulse swirling airflow around the bottle mouth of the inverted bottle.

[0030] Meanwhile, the airflow guiding constraint plate 21 at the bottom of the porous fixing plate 20 fits tightly against the edge of the bottle mouth, directionally gathering and sealing the airflow entering the bottle, preventing airflow leakage and loss from the bottle mouth. The constraint plate's built-in elastic positioning support function can provide a small range of elastic movement space for the bottle without damaging it. The periodic swirling airflow output by the pulse swirling nozzle 22 will form a continuous reciprocating oscillation effect inside the bottle, causing the bottle to resonate. Relying on the resonance force, the stubborn impurities inside are completely removed. No mechanical scraping, grinding or other hard contact methods are required throughout the process, effectively avoiding micro-cracks and matrix damage to the inner wall of the plastic. It protects the integrity of the molecular chain structure from the inside, preventing micro-defects from further causing molecular chain breakage. Thus, the entire process of attachment cleaning before recycling plastic bottles is completed.

[0031] Please see the appendix Figure 4 and attached Figure 6 The recycling and processing unit is located inside the crushing box 9 and is used to crush the recycled plastic bottles after they have been processed by the attachment cleaning unit before melting them. The recycling and processing mechanism includes a guide box 13. The front middle of the crushing box 9 is located in the guide box 13, which is connected to its interior. A sealing cover 14 is provided on the end of the guide box 13 away from the crushing box 9. Two rotating seats 31 are rotatably connected to the bottom of the inner side of the crushing box 9. Multiple blunt shear seats 30 are staggered on the outer wall of the rotating seats 31. Synchronous drivers 15 are provided on the front and rear bottom sides of the crushing box 9 to control and drive the two rotating seats 31 to rotate in the same direction.

[0032] When the recycling and processing facility is started, after the plastic beverage bottles in the processing tank 1 have been cleaned, the staff will take out the clean bottles one by one and put them into the guide box 13. The bottles will smoothly enter the inner cavity of the crushing box 9 along the guide structure of the guide box 13. After all the bottles to be crushed have been put in, the staff will seal the top of the guide box 13 with the sealing cap 14 to ensure the sealing of the operation inside the crushing box 9 and prevent the debris from leaking out during the crushing process.

[0033] Then, the synchronous driver 15 on the crushing box 9 starts, driving the rotating seat 31 inside the crushing box 9 to rotate synchronously in the opposite direction. When the rotating seat 31 is running, it drives the blunt shear seat 30 on it to rotate smoothly at low speed. The plastic bottles in the crushing box 9 are crushed by blunt shearing. Compared with sharp cutting, the blunt shearing mode of the blunt shear seat 30 can significantly reduce the problem of local overheating and molecular chain breakage of plastic. It can curb the thermal degradation and mechanical breakage of molecular chains from the source of crushing, maximize the preservation of the original molecular weight of plastic, and improve the tensile strength and toughness of the subsequent bag making film. On the other hand, it can also avoid the plastic surface from melting and sticking due to high temperature, reduce the situation of particle agglomeration after crushing, and successfully complete the crushing operation of recycled plastic bottles.

[0034] Please see the appendix Figure 4 -Appendix Figure 5 A temperature maintaining mechanism, located at the top of the crushing chamber 9, is used to maintain the internal temperature environment during the crushing process of the recycling and processing mechanism. The temperature maintaining mechanism includes a one-way ventilation seat 26. The front upper part of the crushing box 9 is provided with a one-way ventilation seat 26 that allows external gas to enter the crushing box 9 in one direction. The top middle part of the crushing box 9 is provided with a separation box 11. The rear top of the crushing box 9 is provided with a connecting box 10. The two ends of the connecting box 10 are respectively connected to the interior of the crushing box 9 and the separation box 11.

[0035] When the temperature holding mechanism is started synchronously, the negative pressure fan 28 on the separation box 11 starts running when the recycling and processing mechanism is carrying out crushing operations. It continuously draws out the air inside the separation box 11, so that a stable negative pressure state is formed inside the box. Affected by the external air pressure difference, the external ambient air enters the inner cavity of the crushing box 9 after being filtered by the one-way vent seat 26. The air inside the crushing box 9 then flows into the separation box 11 through the connecting box 10, and is finally drawn out by the negative pressure fan 28.

[0036] The temperature holding mechanism also includes a pull-out seat 27. The pull-out seat 27 is slidably connected to the middle of one side of the separation box 11. Multiple cotton collection seats 29 are equidistantly arranged on the top of the pull-out seat 27. A negative pressure fan 28 is provided in the middle of the front side of the separation box 11 to draw out the gas inside the separation box 11.

[0037] The clean air introduced by the one-way ventilation seat 26 can, on the one hand, remove the heat generated by friction inside the crushing chamber 9 in a timely manner, maintaining a suitable temperature environment inside the chamber. On the other hand, it can also carry away plastic dust and fine impurities generated during crushing and flow synchronously. After the air carrying impurities enters the separation chamber 11, it is filtered, collected, and separated by the collection cotton seat 29 on the pull-out seat 27, achieving the dual effects of temperature control and impurity removal during the crushing process. This temperature-controlled impurity removal method can prevent broken dust and debris from adhering to the surface of plastic fragments again, thus avoiding increasing the subsequent cleaning load and preventing impurities from eventually mixing into the melt and forming processing defects. It can also effectively avoid local heat accumulation and friction heating in the crushing box 9, which can lead to thermal degradation of the plastic and ensure that the performance of the plastic raw materials is not damaged.

[0038] Please see the appendix Figure 6 -Appendix Figure 8 The micro-dissolution control mechanism, located inside the crushing chamber 9, is used to prevent the recycling process from causing micro-dissolution at the edges of the crushed plastic fragments during the crushing of the plastic bottle raw materials.

[0039] The micro-dissolving control mechanism includes a connecting seat 16. The bottom of the front and rear sides of the crushing box 9 is provided with a connecting seat 16. Rotary sealing ring seats 32 are provided on both ends of the rotating seat 31. A circulating cooling pump 18 is provided in the middle of one side of the crushing box 9. The inlet and outlet of the circulating cooling pump 18 are respectively connected to the inside of the connecting seats 16 on both sides through corresponding flow pipes 17.

[0040] When the micro-melting control mechanism is started, during the crushing operation of the recycling and processing mechanism, the blunt shear seat 30 on the rotating seat 31 frequently rubs against the plastic material, generating heat. This heat is quickly absorbed by the coolant in the contact conduction cavity 34 inside the rotating seat 31. After the coolant absorbs heat, its temperature gradually increases, preventing the local friction overheating problem that still occurs when the rotating seat 31 is shearing at low speed from the source. This avoids micro-melting adhesion and molecular chain thermal degradation of the plastic, and also prevents the accumulation of heat in the rotating seat 31 from causing the plastic particles to clump and agglomerate, reducing secondary thermal damage in subsequent processing.

[0041] The micro-dissolving control mechanism also includes a central column 33. A central column 33 is provided in the middle of the inner side of the rotating seat 31. The outer wall of the central column 33 and the inner wall of the rotating seat 31 form a contact conduction cavity 34. The contact conduction cavity 34 is connected to the interior of the connecting seats 16 on both sides. A discharge seat 8 is provided in the middle of the side of the crushing box 9 away from the circulating cooling pump 18 for discharging the crushed plastic fragments.

[0042] During the operation of the rotating seat 31, the rotating sealing ring seats 32 at both ends ensure the rotational flexibility and airtightness of the contact conduction cavity 34. At the same time, through the cooperation of the circulating cooling pump 18 and the flow pipe 17, the coolant in the contact conduction cavity 34 and the connecting seats 16 at both ends is circulated, cooled, and transported in real time to ensure that the crushed plastic fragments do not melt and stick together throughout the process, and the crushed particles are independent and regular in shape, avoiding agglomeration problems in the subsequent cleaning and granulation stages. The crushed material protected by temperature control is free from heat damage, and the melt strength is higher during the subsequent bag making, which can effectively ensure the tensile and tear resistance mechanical properties of the film. Thus, the micro-melting control treatment in the crushing process of plastic fragments is completed.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated bag-making and recycling equipment for waste plastics, characterized in that, include, The processing box (1) has a processing chamber for cleaning recycled plastic bottles. The top of the processing chamber is closed by a rotatable cover (12) connected to the processing box (1). The bottom of the crushing box (9) is fixedly connected to a base (7) for supporting and fixing it. An attachment cleaning mechanism is installed inside the processing box (1) and is used to clean the contaminants attached to the inner and outer surfaces of recycled plastic bottles. The recycling processing unit is located inside the crushing box (9) and is used to crush the recycled plastic bottles after they have been processed by the attachment cleaning unit before melting them; A temperature maintaining mechanism, which is located on top of the crushing chamber (9), is used to maintain the internal temperature environment during the crushing process of the recycling and processing mechanism; A micro-dissolving control mechanism, which is located inside the crushing box (9), is used to prevent the recycling process from causing micro-dissolving at the edges of the crushed plastic fragments during the crushing of the plastic bottle raw materials.

2. The integrated bag-making equipment for recycling and processing waste plastics according to claim 1, characterized in that, The attachment cleaning mechanism includes a perforated fixing plate (20). The perforated fixing plate (20) is rotatably connected to the top side of the processing chamber in the processing box (1). The perforated fixing plate (20) has multiple sets of openings for fixing plastic bottles at equal intervals. A breathable grille (19) is provided on one side of the perforated fixing plate (20). A high-temperature atomizing spray nozzle (6) is provided in the upper middle part of one side of the inner wall of the processing chamber. A sealing cover (12) for sealing the inside of the processing chamber is rotatably connected to the top of the processing box (1).

3. The integrated bag-making equipment for recycling and processing waste plastics according to claim 2, characterized in that, The attachment cleaning mechanism also includes an inclined supply seat (24). An inclined supply seat (24) is provided at the bottom of the processing chamber of the processing box (1). Multiple mounting seats (23) are fixedly connected at equal intervals on the inclined surface of the inclined supply seat (24). Multiple pulse vortex nozzles (22) are provided at equal intervals in the middle of the mounting seats (23). The position and tilt angle of the pulse vortex nozzles (22) correspond to the opening positions on the multi-hole fixing plate (20). A collection tank (25) for collecting cleaning wastewater is provided on one side of the top of the inclined supply seat (24). A drain pipe (5) is provided on one side of the lower middle part of the front end of the processing box (1). One end of the drain pipe (5) is connected to the inside of the collection tank (25).

4. The integrated bag-making equipment for recycling and processing waste plastics according to claim 3, characterized in that, The attachment cleaning mechanism also includes an external box (4). An external box (4) is provided on one side of the lower front end of the treatment box (1), and the interior of the external box (4) is connected to the interior of the inclined supply seat (24). Multiple sets of airflow guiding constraint plates (21) for directional collection and constraint of gas entering the bottle are provided at equal intervals at the bottom of the multi-hole fixing plate (20). A multi-head pipe (2) connected to an external high-pressure water source and a high-pressure gas source is provided on the external box (4). A three-way solenoid valve (3) that can switch the type of high-pressure energy to be discharged is provided at the intersection and concentration position of the multi-head pipe (2).

5. The integrated bag-making equipment for recycling and processing waste plastics according to claim 1, characterized in that, The recycling and processing mechanism includes a guide box (13), and the front middle of the crushing box (9) is provided in the guide box (13) which is connected to its interior. A sealing cover (14) is provided on the end of the guide box (13) away from the crushing box (9). Two rotating seats (31) are rotatably connected to the bottom of the inner side of the crushing box (9). Multiple blunt shear seats (30) are staggered on the outer wall of the rotating seats (31). Synchronous drivers (15) are provided on the bottom of the front and rear sides of the crushing box (9) to control and drive the two rotating seats (31) to rotate in the same direction.

6. The integrated bag-making equipment for recycling and processing waste plastics according to claim 1, characterized in that, The temperature maintaining mechanism includes a one-way ventilation seat (26). The upper front side of the crushing box (9) is provided with a one-way ventilation seat (26) that allows external gas to enter the crushing box (9) in one direction. The top center of the crushing box (9) is provided with a separation box (11). The top rear side of the crushing box (9) is provided with a connecting box (10). The two ends of the connecting box (10) are respectively connected to the interior of the crushing box (9) and the separation box (11).

7. The integrated bag-making equipment for recycling and processing waste plastics according to claim 6, characterized in that, The temperature holding mechanism also includes a pull-out seat (27), which is slidably connected to the middle of one side of the separation box (11). Multiple cotton collection seats (29) are equidistantly arranged on the top of the pull-out seat (27). A negative pressure fan (28) is provided in the middle of the front side of the separation box (11) to pump out the gas inside the separation box (11).

8. The integrated bag-making equipment for recycling and processing waste plastics according to claim 5, characterized in that, The micro-dissolving control mechanism includes a connecting seat (16). The bottom of the front and rear sides of the crushing box (9) is provided with a connecting seat (16). Rotating sealing ring seats (32) are provided on both ends of the rotating seat (31). A circulating cooling pump (18) is provided in the middle of one side of the crushing box (9). The inlet and outlet of the circulating cooling pump (18) are respectively connected to the interior of the connecting seats (16) on both sides through corresponding flow pipes (17).

9. The integrated bag-making equipment for recycling and processing waste plastics according to claim 8, characterized in that, The micro-dissolving control mechanism also includes a central column (33). The central column (33) is provided in the middle of the inner side of the rotating seat (31). The outer wall of the central column (33) and the inner wall of the rotating seat (31) form a contact conduction cavity (34). The contact conduction cavity (34) is connected to the interior of the connecting seats (16) on both sides respectively. The crushing box (9) is provided with a discharge seat (8) in the middle of the side away from the circulating cooling pump (18) for discharging the crushed plastic fragments.

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