Cleaning device for waste plastic broken materials

Abstract

The invention discloses a cleaning device for waste plastic broken materials. The cleaning device comprises a rough cleaning pool and a fine cleaning tank. The rough washing pool is an inclined long-strip-shaped pool body, a net rack is arranged in the middle of the pool body of the rough washing pool, a plurality of semi-arc-shaped lower grooves are formed in the surface of the net rack, and pushing augers are arranged in the lower grooves; the fine washing tank is of a vertical tank body structure, and a feeding port is formed in the top of the fine washing tank and connected with the discharging side of the rough washing pool; a rotating cage is arranged in a tank body of the fine washing tank, a brush frame is arranged in the rotating cage, and a plurality of rotating brushes are arranged on the brush frame. The rotating brush is a rod-shaped brush and is arranged in a direction perpendicular to a rotating shaft of the rotating cage; the bottom of the rotating cage is of an openable structure, and an openable discharging hole seat is arranged at the bottom of the fine washing tank. The cleaning device is reasonable in structure, easy and convenient to operate, high in cleaning efficiency and low in resource consumption, can effectively solve the problems existing in the prior art, and has very high practical value and market application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of recycling and processing of waste plastics, and in particular to a cleaning device for crushed waste plastics. Background Art

[0002] Plastic materials play an increasingly critical role in modern society and production activities, and the application range of their products has become extremely wide. However, the resulting waste plastic pollution problem is becoming increasingly serious, not only leading to increasingly aggravated environmental problems, but also causing a large amount of waste of resources. Against this background, the waste plastic recycling industry has developed rapidly. On the one hand, by recycling waste plastics, it can reduce dependence on petroleum or bio-based raw materials, thereby achieving the benefit of resource conservation. On the other hand, compared with using petroleum to produce new plastics, using waste plastics to make recycled plastics can reduce energy consumption and reduce carbon dioxide emissions, thus bringing significant environmental benefits.

[0003] In the recycling industry of waste plastics, the first thing to do is to crush and clean the recycled plastic structural parts. The crushing operation is used to break down large pieces of plastic into smaller fragments, which is not only convenient for subsequent processing and classification, but also can separate other structural materials attached to the plastic parts, making it easier to remove attached labels, glue, oil stains and other material impurities from the crushed plastic fragments during the cleaning process. The cleaning operation can be used to further ensure the cleanliness of the plastic fragments. If they are not thoroughly cleaned, the residues may reduce the performance of the plastic during the recycling process, or even produce harmful substances, affecting the safety and reliability of the final product.

[0004] In today's technical field, there are many shortcomings in the mechanical equipment for cleaning and processing waste plastic fragments. The structural design of some cleaning equipment is too complicated, which not only makes the equipment bulky, but also leads to a significant increase in costs during actual use and maintenance. Secondly, the efficiency of some cleaning equipment is not ideal. They cannot completely remove all impurities on the plastic fragments, which directly affects the quality of the cleaned plastic fragments. In addition, some cleaning equipment consumes a lot of water resources and energy during cleaning. This high consumption not only increases operating costs, but also goes against the environmental protection concept advocated by the current society and is not conducive to sustainable development.

[0005] In view of this, the present invention proposes a novel waste plastic pretreatment device, aiming to solve the problems existing in the prior art, improve cleaning efficiency and reduce resource consumption. Summary of the invention

[0006] The technical problem solved by the present invention is to provide a cleaning device for waste plastic crushed materials, which can be used to solve the defects in the above-mentioned technical Beijing.

[0007] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0008] A cleaning device for waste plastic crushed materials, comprising a rough washing tank and a fine washing tank;

[0009] The rough washing tank is an inclined long strip tank body, with the feed side located at the bottom and the discharge side located at the top; a grid is arranged in the middle of the tank body of the rough washing tank, and a plurality of parallel semicircular arc-shaped lower grooves are formed on the surface of the grid, and the lower grooves are arranged along the length direction of the rough washing tank, and a push auger matching the lower groove is arranged in each lower groove, and the rotation direction of the push auger is based on pushing the material in the rough washing tank from the feed side to the discharge side;

[0010] The fine washing tank is a vertical tank structure, and a feed port is provided on the top of the fine washing tank, and the feed port is connected to the discharge side of the rough washing tank to receive materials from the rough washing tank; a rotating cage is arranged in the tank body of the fine washing tank, and a brush rack is arranged in the rotating cage, and the brush rack is a stirring frame frame structure, and a plurality of rotating brushes are arranged on the brush rack; the rotation direction of the brush rack is opposite to that of the rotating cage; the rotating brush is a rod-shaped brush, the setting direction of which is perpendicular to the rotating axis of the rotating cage, and rotates synchronously with the rotating cage; the bottom of the rotating cage is an openable structure, and an openable discharge hole seat is arranged at the bottom of the fine washing tank.

[0011] As a further limitation, the cleaning device is connected to the alkaline immersion and decomposition tank in front of the rough washing tank.

[0012] As a further limitation, the tank body of the rough washing tank and the tank body of the fine washing tank are both made of stainless steel to ensure that the entire cleaning device has good corrosion resistance and a long service life.

[0013] As a further limitation, an ultrasonic generator is also provided at the bottom of the rough washing tank. The ultrasonic waves generated by the ultrasonic generator can penetrate into the tiny gaps of the material and effectively remove the stubborn stains and oil stains attached to the surface of the plastic fragments.

[0014] As a further limitation, the cleaning device is connected to the drying component at the rear of the fine washing tank, and the drying component is a combination of a hollow conveyor belt and a tunnel drying device.

[0015] As a further limitation, the grid includes a structural frame, and a placement protrusion matching the size of the structural frame is formed on the side wall of the rough washing tank at the middle position of the tank body, and the grid can be stably installed in the rough washing tank through the placement protrusion;

[0016] The structural frame is formed with a mounting rod frame between adjacent lower grooves, and the independently formed lower groove of the mesh surface has ears on both sides that match the size of the mounting rod frame. Through the cooperation of the mounting rod frame and the ears, the lower groove of the mesh surface can be quickly installed and disassembled on the mesh frame, thereby facilitating cleaning and maintenance work.

[0017] As a further limitation, an aeration device is provided at the lower part of the fine washing tank, and a cleaning liquid replenishing pipeline is provided at the upper part. The cleaning liquid replenishing pipeline is a spray pipeline, which is used to add cleaning liquid in the fine washing cycle and evenly spray the cleaning liquid when the cage rotates, ensuring that each waste plastic crushed material can be thoroughly cleaned.

[0018] As a further limitation, a heating device is also provided in the rough washing tank and / or the fine washing tank, by which the washing water can be heated to improve the washing efficiency and effect; the heating device can be an electric heater, a steam heater or other types of heating equipment to ensure that the water temperature during the washing process is maintained within an appropriate range, so as to better remove stubborn stains such as oil stains and glue on the plastic fragments.

[0019] As a further limitation, a valve plate is provided at the position of the discharge hole seat, and the opening and closing of the discharge hole seat is controlled by the valve plate, thereby realizing automatic discharge of the cleaned plastic fragments.

[0020] As a further limitation, the cleaning device also includes a cleaning liquid circulation system with a filtering device, which is arranged at the bottom of the fine washing tank, for receiving the cleaning liquid generated during the fine washing process, and filtering and purifying the cleaning liquid through the filtering device; the filtered cleaning liquid can be continuously recycled with the help of a circulating pump, thereby saving resources and reducing wastewater discharge; the filtering device is a combination of a sand filter, an activated carbon filter and a precision filter.

[0021] Beneficial effects: The cleaning device for waste plastic crushed materials of the present invention has a simple structure, is easy to maintain and clean, and can effectively reduce long-term operating costs. Through the preliminary cleaning of the rough washing tank, most impurities and stains are effectively removed, laying a solid foundation for the subsequent fine washing steps. The push auger in the rough washing tank efficiently transports the material from the feed end to the discharge end, ensuring the continuity and efficiency of the cleaning process; in addition, the design of the rotating cage and rotating brush in the fine washing tank realizes all-round cleaning of plastic fragments, ensuring the cleanliness of each part. The synchronous rotation of the rotating cage and the rotating brush not only improves the cleaning efficiency, but also reduces the potential damage to the plastic fragments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the assembly of a preferred embodiment of the present invention.

[0023] Figure 2 for Figure 1Schematic diagram of the longitudinal section of the medium and coarse washing tank.

[0024] Figure 3 for Figure 1 Schematic diagram of the internal structure of the medium fine washing tank.

[0025] Among them: 1. Rough washing tank; 2. Fine washing tank; 3. Hollow conveyor belt; 4. Tunnel drying device; 5. Discharge hole seat; 6. Valve plate switch; 7. Tank body; 8. Push auger; 9. Mounting rod frame; 10. Auger drive shaft; 11. Groove under the mesh surface; 12. Storage protrusion; 13. Top cover; 14. Feed inlet; 15. Tank cover; 16. Transmission; 17. Spray head; 18. Cleaning liquid replenishment pipeline; 19. Liquid supply port; 20. Agitator shaft; 21. Brush holder; 22. Rotating cage; 23. Rotating brush; 24. Lifting seat. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific diagrams.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In the following embodiments, it will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless defined as herein.

[0029] See also Figure 1 to Figure 3 A cleaning device for waste plastic crushed materials is provided. In this embodiment, the waste plastic crushed materials are used in the recycling and regeneration process of waste plastics, and are used to clean the crushed waste plastic crushed materials. The corresponding waste plastics are crushed using a blade crusher, which can efficiently cut the plastic products into crushed materials through high-speed rotating blades. This crusher shows excellent adaptability to plastic products of different types and hardness, and can also effectively remove non-plastic impurities attached to the plastic products during the crushing process.

[0030] The corresponding waste plastic fragments need to be alkaline-solutioned in an alkaline immersion and decomposition tank before entering the cleaning device. The function of alkaline decomposition is to soak the plastic fragments with alkaline solution to soften and remove organic impurities such as oil stains and glue on the surface. The concentration of alkaline solution and immersion time in the alkaline decomposition tank are adjusted according to the type and degree of contamination of the plastic fragments to ensure the best decomposition effect. The plastic fragments treated with alkaline decomposition are then sent to the cleaning device.

[0031] The cleaning device includes a rough washing tank 1 and a fine washing tank 2 connected in sequence. The rough washing tank 1 is a long strip tank structure. The tank body 7 is made of stainless steel to take into account corrosion resistance and performance. The tank body 7 is obliquely supported by a bracket at the bottom. The feed side of the obliquely arranged rough washing tank 1 is located at the bottom, and the discharge side is located at the top.

[0032] The upper and lower parts of the rough washing tank 1 corresponding to the discharge side are connected to the circulating water circuit, so that the materials in the rough washing tank 1 are washed with live water flowing into the rough washing tank 1 from the upper part through the circulating water circuit, and the washing water flowing out from the lower part re-enters the circulation after reflux and filtration to reduce the waste of water resources.

[0033] Placement protrusions 12 are arranged on both sides of the middle position of the rough washing tank 1, and two groups of mounting rods 9 are fixedly arranged between the placement protrusions 12 on both sides. The placement protrusions 12 on both sides and the mounting rods 9 and the two groups of mounting rods 9 are arranged at equal intervals for mounting the groove 11 under the mesh surface. The groove 11 under the mesh surface has a structural frame, and is mounted on the corresponding placement protrusions 12 or the mounting rods 9 on both sides through the structural frame, and is structurally fixed by threaded fixings. These grooves 11 under the mesh surface are arranged along the length direction of the rough washing tank 1, and a push auger 8 matching it is installed at each groove 11 under the mesh surface. The auger drive shaft 10 of the push auger 8 is externally driven and can be driven to rotate by the auger drive shaft 10. The rotation direction of the push auger 8 is designed to push the material in the rough washing tank 1 from the feed side to the discharge side to ensure the continuous flushing operation of the material in the rough washing tank 1 with the flowing flushing water. During the flushing process, the eluted impurities are leaked to the bottom of the tank body 7 through the grooves 11 under the mesh surface by the stirring and pushing of the push auger 8, and discharged with the flushing water.

[0034] In order to further improve the rough washing effect of the rough washing tank 1, an ultrasonic generator is also provided at the bottom of the rough washing tank 1. The generator can generate ultrasonic waves, penetrate into the tiny gaps of the material, and effectively remove the stubborn stains and oil stains attached to the surface of the plastic fragments.

[0035] The fine washing tank 2 is a vertical tank structure with an open top surface, which is sealed and covered by a tank cover 15 on the open side. The tank cover 15 is equipped with a feed port 14, which is connected to the discharge side of the rough washing tank 1 on one side to receive materials from the rough washing tank. At the same time, the top of the feed port 14 also has an independent top surface opening, which can also be used for discharging operations independently. In the non-discharging state, the top surface opening is closed by the top cover 13.

[0036] The tank body 15 of the fine washing tank 2 is made of stainless steel to ensure corrosion resistance and strength. A rotating cage 22 is provided inside the fine washing tank 2. A brush rack 21 is installed inside the rotating cage 22. The brush rack 21 is a stirring frame structure, on which a plurality of rotating brushes 23 are installed. The stirring shafts 20 of the rotating cage 22 and the brush rack 21 are assembled on two different output ends of the same transmission 16. The corresponding transmission 16 is externally connected to a driving motor, and can make the rotating brush 23 rotate in the opposite direction to the rotating cage 22 under the drive of the driving motor, so as to ensure that the plastic fragments are cleaned in all directions.

[0037] In this embodiment, a plurality of rotating brushes 23 are formed on the rotating cage 22. These rotating brushes 23 are rod-shaped brushes, which are assembled on the brush holder 21 by connecting the rod body and can be replaced or adjusted according to different cleaning needs. The material of the rotating brush 23 is selected to be wear-resistant and friendly to the surface of plastic fragments to reduce damage to the plastic fragments. The structural design of the brush holder 21 allows the rotating brush 23 to rotate freely in the rotating cage 22 while maintaining full contact with the plastic fragments to achieve the best cleaning effect; and the rotating brush 23 can be set to rotate actively or passively according to needs.

[0038] In addition, the rotation speed of the rotating cage 22 can be adjusted by the transmission 16 to adapt to plastic fragments of different types and sizes. The transmission 16 is connected to the drive motor. By controlling the speed of the motor, the rotation speed of the rotating cage 22 and the rotating brush 23 can be accurately controlled, thereby achieving gentle and effective cleaning of the plastic fragments. This design not only improves the cleaning efficiency, but also extends the service life of the equipment.

[0039] In order to ensure the cleaning effect, an aeration device is provided at the bottom of the fine washing tank 2, and a spray system is provided at the top. The spray system consists of multiple spray heads 17 and a cleaning liquid replenishing pipeline 18. The cleaning liquid replenishing pipeline 18 is connected to the cleaning liquid supply device through a liquid supply port 19 on the tank wall of the fine washing tank 2 through molding, and the spray head 17 sprays out a high-pressure jet, which is used to add cleaning liquid through the spray head 17 in the fine washing cycle and to evenly spray the cleaning liquid through the spray head 17 when the cage 22 rotates, to ensure that each waste plastic crushed material can be thoroughly cleaned.

[0040] In another embodiment, a heating device may be provided in the rough washing tank 1 and / or the fine washing tank 2, and the washing water may be heated by the heating device to improve the washing efficiency and effect. The heating device may be an electric heater, a steam heater or other types of heating equipment to ensure that the water temperature during the washing process is kept within an appropriate range, thereby better removing stubborn stains such as oil stains and glue on the plastic fragments.

[0041] The bottom of the rotating cage 22 is an independently formed cage bottom, which is connected to the cage body of the rotating cage 22 through a lifting seat 24. By controlling the lifting of the lifting seat 24, the cage bottom and the cage body of the rotating cage 22 can be separated. After separation, the cleaned plastic fragments can be discharged by rotating the rotating cage 22. Correspondingly, a discharge hole seat 5 is also provided at the bottom of the fine washing tank 2. The discharge hole seat 5 cooperates with the cage bottom of the rotating cage 22 to ensure that the cleaned plastic fragments can be discharged smoothly from the fine washing tank 2. The discharge hole seat 5 is designed with an adjustable valve, which is controlled by the valve plate switch 6. The discharge speed and flow rate can be adjusted according to the actual needs during the cleaning process, thereby optimizing the cleaning efficiency.

[0042] The cleaning device also includes a cleaning liquid circulation system with a filtering device, which is arranged at the bottom of the fine washing tank 2, and is used to receive the cleaning liquid generated during the fine washing process, and filter and purify the cleaning liquid through the filtering device. The filtered cleaning liquid can be continuously recycled with the help of a circulation pump, thereby saving resources and reducing wastewater discharge. The filtering device is a combination of a sand filter, an activated carbon filter and a precision filter to ensure the cleanliness of the cleaning liquid.

[0043] The cleaning device is also provided with a drying component at the discharge hole seat 55 of the fine cleaning tank 2, which is used to dry the cleaned plastic fragments. The drying system includes a drying component which is a combination of a hollow conveyor belt 3 and a tunnel drying device 4. The cleaned plastic fragments are drained on the hollow conveyor belt 3 and then conveyed to the tunnel drying device 4 for drying to remove moisture on the surface of the plastic fragments, thereby ensuring the dryness and cleanliness of the final product.

[0044] In summary, the cleaning device provided by the present invention realizes efficient cleaning of waste plastic crushed materials through the combination of a rough washing tank 1 and a fine washing tank 2. The preliminary cleaning of the rough washing tank 1 removes most of the impurities and stains, laying the foundation for the subsequent fine washing step. The design of the rotating cage 22 and the rotating brush 23 in the fine washing tank 2 realizes all-round cleaning of plastic fragments, ensuring the cleanliness of each part. The use of an ultrasonic generator and a heating device further improves the cleaning effect, while the setting of a cleaning liquid circulation system and a drying component ensures resource conservation and the quality of the final product. Overall, the cleaning device of the present invention has a simple structure, is easy to maintain, can effectively reduce long-term operating costs, and has good cleaning efficiency and environmental benefits.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cleaning device for waste plastic crushing materials, characterized in that: Including rough washing tank and fine washing tank; The rough washing tank is an inclined long strip tank body, with the feed side located at the bottom and the discharge side located at the top; a grid is arranged in the middle of the tank body of the rough washing tank, and a plurality of parallel semicircular arc-shaped lower grooves are formed on the surface of the grid, and the lower grooves are arranged along the length direction of the rough washing tank, and a push auger matching the lower groove is arranged in each lower groove, and the rotation direction of the push auger is based on pushing the material in the rough washing tank from the feed side to the discharge side; The fine washing tank is a vertical tank structure, and a feed port is provided on the top of the fine washing tank, and the feed port is connected to the discharge side of the rough washing tank to receive materials from the rough washing tank; a rotating cage is arranged in the tank body of the fine washing tank, and a brush rack is arranged in the rotating cage, and the brush rack is a stirring frame frame structure, and a plurality of rotating brushes are arranged on the brush rack; the rotation direction of the brush rack is opposite to that of the rotating cage; the rotating brush is a rod-shaped brush, the setting direction of which is perpendicular to the rotating axis of the rotating cage, and rotates synchronously with the rotating cage; the bottom of the rotating cage is an openable structure, and an openable discharge hole seat is arranged at the bottom of the fine washing tank.

2. The cleaning device for waste plastic crushing materials according to claim 1 is characterized in that: The cleaning device is connected to the alkaline immersion and dissolution tank at the front of the rough washing tank.

3. The cleaning device for waste plastic crushing materials according to claim 1 is characterized in that: The tank body of the rough washing tank and the tank body of the fine washing tank are both made of stainless steel.

4. The cleaning device for waste plastic crushing materials according to claim 1 is characterized in that: An ultrasonic generator is also arranged at the bottom of the rough washing tank.

5. The cleaning device for waste plastic crushing materials according to claim 1 is characterized in that: The cleaning device is connected to the drying component at the rear of the fine washing tank, and the drying component is a combination of a hollow conveyor belt and a tunnel drying device.

6. The cleaning device for waste plastic crushing materials according to claim 1 is characterized in that: The grid includes a structural frame, and a placement protrusion matching the size of the structural frame is formed on the side wall of the rough washing tank at the middle position of the tank body, and the grid can be stably installed in the rough washing tank through the placement protrusion; The structural frame is formed with a mounting rod frame between adjacent lower grooves, and the independently formed lower groove of the mesh surface has ears on both sides that match the size of the mounting rod frame. Through the cooperation of the mounting rod frame and the ears, the lower groove of the mesh surface can be quickly installed and disassembled on the mesh frame, thereby facilitating cleaning and maintenance work.

7. The cleaning device for waste plastic crushing materials according to claim 1 is characterized in that: The lower part of the fine washing tank is provided with an aeration device, and the upper part is provided with a cleaning liquid replenishing pipeline, and the cleaning liquid replenishing pipeline is a spraying pipeline, which is used to add cleaning liquid in the fine washing cycle and evenly spray the cleaning liquid when the rotating cage rotates.

8. The cleaning device for waste plastic crushing materials according to claim 1 is characterized in that: A heating device is also provided in the rough washing tank and / or the fine washing tank, and the heating device is an electric heater or a steam heater.

9. The cleaning device for waste plastic crushing materials according to claim 1, characterized in that: A valve plate is arranged at the position of the discharge hole seat, and the opening and closing of the discharge hole seat is controlled by the valve plate, thereby realizing automatic discharge of the cleaned plastic fragments.

10. The cleaning device for waste plastic crushed materials according to claim 1, characterized in that: The cleaning device also includes a cleaning liquid circulation system with a filtering device, which is arranged at the bottom of the fine washing tank, for receiving the cleaning liquid generated during the fine washing process and filtering and purifying the cleaning liquid through the filtering device; the filtering device is a combination of a sand filter, an activated carbon filter and a precision filter.

Images