Waste plastic recovery device and method

Abstract

The invention relates to a waste plastic recycling device and method in the technical field of waste plastic recycling. The waste plastic recycling device comprises a cleaning box, and a motor is fixedly connected to the side face of the cleaning box; after water and waste plastic are put into the cleaning box, the waste plastic is stirred through the overturning plate, so that the friction force between the waste plastic and the water and between the waste plastic is improved, the waste plastic cleaning effect is enhanced, meanwhile, the waste plastic is cut through the cutting knife, the contact area between the waste plastic and the water is increased, and the waste plastic cleaning effect is improved. According to the waste plastic cleaning device, the waste plastic can be cleaned more easily and can rotate in water more easily, the cleaning effect is further improved, workers can conveniently process the waste plastic subsequently, when the waste plastic is dried, gas blows a turnover plate, then the turnover plate drives a cutting knife to rotate together, the waste plastic is turned over and cut again, then the waste plastic is evenly heated, and the waste plastic cleaning effect is improved. And the drying speed is increased, and the crushing degree of the waste plastic is improved.

Description

Technical Field

[0001] The invention relates to a waste plastic recycling device and method, in particular to a waste plastic recycling device and method applied to the field of waste plastic recycling. Background Art

[0002] There are many benefits to recycling waste plastics. The main benefits are: reducing environmental pollution (reducing the damage of plastic waste to marine and terrestrial ecosystems, reducing the risk of animals ingesting by mistake or habitat pollution), efficient utilization of resources and energy (the energy consumption of producing recycled plastics is about 70% lower than that of virgin plastics, significantly reducing carbon emissions), and reducing the raw material costs of enterprises (such as the price of recycled plastics is lower than that of virgin plastics), enhancing the resilience of the supply chain, etc.;

[0003] The core purposes of recycling waste plastics are: saving natural resources, giving priority to environmental protection, and promoting circular economy, etc. The main steps of recycling waste plastics are: cleaning, drying, and crushing treatment, etc.

[0004] When cleaning and processing waste plastics, it is difficult to make the waste plastics flip in the cleaning equipment, so it is difficult to make the plastics contact the cleaning water to the greatest extent during cleaning. Furthermore, after cleaning the waste plastics, the cleanliness of the waste plastics is relatively low. Therefore, the cleaning effect of the existing cleaning equipment for waste plastics is not ideal. Summary of the Invention

[0005] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is that when cleaning and processing waste plastics, it is difficult to make the waste plastics flip in the cleaning equipment, so it is difficult to make the plastics contact the cleaning water to the greatest extent during cleaning. Furthermore, after cleaning the waste plastics, the cleanliness of the waste plastics is relatively low.

[0006] To solve the above problems, the present invention provides a waste plastic recycling device, which includes a cleaning tank. A motor is fixedly connected to the side of the cleaning tank. A connecting rod is fixedly connected to the output end of the motor. A plurality of turning plates and cutting knives are fixedly connected to the outer end of the connecting rod. One end of the connecting rod rotates through the cleaning tank, and the end away from the motor rotates and is inserted into the inner side wall of the cleaning tank. A pair of air pumps are fixedly connected to the side of the cleaning tank. A hot air blower is fixedly connected to the air inlet end of the air pump. An air inlet pipe is fixedly connected to the air outlet end of the air pump. The end of the air inlet pipe away from the air pump is fixedly inserted into the inside of the cleaning tank, and its air outlet end is flush with the inner side wall of the cleaning tank and faces the turning plate close to the inner side wall of the cleaning tank. A pair of water outlet pipes are fixedly connected to the lower end of the cleaning tank. A valve is fixedly connected to the outside of the water outlet pipe.

[0007] In the above-mentioned waste plastic recycling device, after water and waste plastics are put into the cleaning tank, the waste plastics are agitated by the turning plate to increase the friction between the waste plastics and water and between the waste plastics, enhancing the cleaning effect of the waste plastics. At the same time, the waste plastics are cut by the cutting knife to increase the contact area between the waste plastics and water and make it easier to rotate in water, further improving the cleaning effect and facilitating subsequent processing of the waste plastics by personnel. When drying the waste plastics, the gas will blow the turning plate, and then drive the cutting knife to rotate together to turn and cut the waste plastics again, so that the waste plastics are evenly heated, the drying speed is increased, and the degree of fragmentation of the waste plastics is improved.

[0008] As a further improvement of the present invention, a pair of electric push rods I are fixedly connected to the upper side of the cleaning tank, and the telescopic ends of the pair of electric push rods I are fixedly connected with the same sealing cover. The inside of the sealing cover is of an inclined plane structure, and its inclination direction is from top to bottom.

[0009] As a further further improvement of the present invention, an exhaust pipe is fixedly connected to the upper end of the sealing cover, a connecting plate is fixedly connected to the inner wall of the exhaust pipe, an electric push rod II is fixedly connected to the upper side of the connecting plate, and a sealing plate is fixedly connected to the telescopic end of the electric push rod II.

[0010] As a further further improvement of the present invention, a pressure sensor is fixedly connected to the lower side of the connecting plate, a controller I is fixedly connected to the upper side of the connecting plate, and both the pressure sensor and the electric push rod II are electrically connected to the controller I through wires.

[0011] As a further further improvement of the present invention, the turning plate and the bottom of the cutting knife below the connecting rod are both in contact with the inner bottom wall of the cleaning tank, and the side of the turning plate away from the connecting rod is of an inclined plane structure.

[0012] As another improvement of the present invention, a plurality of horizontal pipes are movably inserted into the inside of the water outlet pipe, a threaded rod is threadedly connected to the inside of the water outlet pipe, the threaded rod is movably inserted into the inside of the horizontal pipe, an electric push rod III is fixedly connected to the upper side of the horizontal pipe, and a filter plate is fixedly connected to the telescopic end of the electric push rod III. A pair of adjacent filter plates are fixedly connected by a vertical rod.

[0013] As a supplement to another improvement of the present invention, a circular ring is fixedly sleeved on the outside of the filter plate, friction lines are engraved on the outside of the circular ring, and one end of the threaded rod is inserted into the inner wall of the water outlet pipe.

[0014] As a supplement to another improvement of the present invention, a pull rod is fixedly connected to the lower side of the horizontal pipe, anti-slip lines are engraved on the outside of the pull rod, and the surface of the circular ring is slidably connected to the inner wall of the water outlet pipe.

[0015] As a supplement to another improvement of the present invention, a pair of guiding grooves are provided on the inner wall of the water outlet pipe, and a pair of guiding rods that are movably inserted into the guiding grooves are fixedly connected to the outer side of the drawing rod. The lower side of the guiding groove communicates with the water outlet end of the water outlet pipe.

[0016] A method for recycling waste plastics, which uses the above-mentioned waste plastic recycling device, includes the following steps:

[0017] S1: Put the waste plastics into the cleaning tank, pre-cut the plastics with the cutting knife, and push the plastics to move through the turning plate;

[0018] S2: After cleaning, dry the plastics, and under the push of the gas, make the cutting knife rotate to cut the plastics again;

[0019] S3: Before draining water, install the filter plate in the water outlet pipe. When draining water, the filter plate filters the smaller plastics in the water to prevent them from moving into the water outlet pipe. At the same time, the filter plate can be moved upward to push the plastics piled on the inner bottom wall of the cleaning tank upward, so that the water can smoothly enter the water outlet pipe.

[0020] The present invention has the following beneficial effects:

[0021] 1. When the present invention is in use, after putting water and waste plastics into the cleaning tank, the turning plate is used to stir the waste plastics to increase the friction between the waste plastics and water and between the waste plastics, enhance the cleaning effect of the waste plastics. At the same time, the cutting knife is used to cut the waste plastics to increase the contact area between the waste plastics and water and make it easier to rotate in the water, further improving the cleaning effect and facilitating the subsequent processing of the waste plastics by personnel. When drying the waste plastics, the gas will blow the turning plate, and then drive the cutting knife to rotate together to turn and cut the waste plastics again, so that the waste plastics are evenly heated, the drying speed is increased, and the crushing degree of the waste plastics is improved.

[0022] 2. When draining water, the filter plate is used to filter the plastics in the water to prevent the plastics from being lost and wasted. During the filtering process, the filter plate can be pushed upward to push the plastics accumulated at the water inlet end of the water outlet pipe away, so that the water in the cleaning tank can smoothly enter the water outlet pipe, and then it is convenient for the cleaning tank to drain water normally. When taking out the filter plate from the water outlet pipe, the inner wall of the water outlet pipe can be cleaned by using the circular ring, improving the cleanliness inside the water outlet pipe. Description of the Drawings

[0023] Figure 1 is the overall schematic diagram of the present invention;

[0024] Figure 2 is the partial schematic diagram of the connecting rod of the present invention;

[0025] Figure 3 Schematic diagram of the connecting plate of the present invention;

[0026] Figure 4 Schematic diagram of the sealing cover of the present invention;

[0027] Figure 5 Schematic diagram of the upward movement of the sealing cover of the present invention;

[0028] Figure 6 Schematic diagram of the upward movement of the filter plate of the present invention;

[0029] Figure 7 Schematic diagram of the interior of the water outlet pipe of the present invention;

[0030] Figure 8 Of the present invention Figure 7 Partial enlarged schematic diagram at position A in;

[0031] Figure 9 Schematic diagram of the circular ring of the present invention;

[0032] Figure 10 Schematic diagram of the working process of the present invention.

[0033] Explanation of the reference numerals in the figure:

[0034] 1. Cleaning tank; 2. Motor; 3. Connecting rod; 4. Flipping plate; 5. Cutting knife; 6. Air pump; 7. Hot air blower; 8. Air inlet pipe; 9. Electric push rod one; 10. Sealing cover; 11. Exhaust pipe; 12. Connecting plate; 13. Electric push rod two; 14. Sealing plate; 15. Air pressure sensor; 16. Controller one; 17. Water outlet pipe; 18. Horizontal pipe; 19. Threaded rod; 20. Electric push rod three; 21. Filter plate; 22. Vertical rod; 23. Valve; 24. Circular ring; 25. Friction pattern; 26. Pull rod; 27. Guide groove; 28. Guide rod. Specific embodiments

[0035] The following describes in detail two embodiments of the present invention with reference to the accompanying drawings.

[0036] The first embodiment:

[0037] Figures 1-5Disclosed is a waste plastic recycling device, including a cleaning tank 1. A motor 2 is fixedly connected to the side of the cleaning tank 1. A connecting rod 3 is fixedly connected to the output end of the motor 2. A plurality of turning plates 4 and cutting knives 5 are fixedly connected to the outer end of the connecting rod 3. One end of the connecting rod 3 rotates through the cleaning tank 1, and the end away from the motor 2 rotates and is inserted into the inner side wall of the cleaning tank 1. A pair of air pumps 6 are fixedly connected to the side of the cleaning tank 1. A hot air blower 7 is fixedly connected to the air inlet end of the air pump 6. An air inlet pipe 8 is fixedly connected to the air outlet end of the air pump 6. The end of the air inlet pipe 8 away from the air pump 6 is fixedly inserted into the inside of the cleaning tank 1, and its air outlet end is flush with the inner side wall of the cleaning tank 1 and faces the turning plate 4 close to the inner side wall of the cleaning tank 1. A pair of water outlet pipes 17 are fixedly connected to the lower end of the cleaning tank 1. A valve 23 is fixedly connected to the outside of the water outlet pipe 17. A transparent plate is fixedly connected to the side of the cleaning tank 1 so that personnel can observe the waste plastic inside the cleaning tank 1;

[0038] A pair of electric push rods one 9 are fixedly connected to the upper side of the cleaning tank 1. The telescopic ends of the pair of electric push rods one 9 are fixedly connected to the same sealing cover 10. The inside of the sealing cover 10 is of an inclined surface structure, and its inclination direction is from top to bottom. During the process of cleaning waste plastic, after water splashes onto the inner wall of the sealing cover 10, the water will slide down along the inclined direction of the inner wall of the sealing cover 10 into the cleaning tank 1;

[0039] An exhaust pipe 11 is fixedly connected to the upper end of the sealing cover 10. A connecting plate 12 is fixedly connected to the inner wall of the exhaust pipe 11. An electric push rod two 13 is fixedly connected to the upper side of the connecting plate 12. A sealing plate 14 is fixedly connected to the telescopic end of the electric push rod two 13;

[0040] A pressure sensor 15 is fixedly connected to the lower side of the connecting plate 12. A controller one 16 is fixedly connected to the upper side of the connecting plate 12. The pressure sensor 15 and the electric push rod two 13 are both electrically connected to the controller one 16 through wires. The bottoms of the turning plate 4 and the cutting knife 5 located below the connecting rod 3 are both in contact with the inner bottom wall of the cleaning tank 1. The side of the turning plate 4 away from the connecting rod 3 is of an inclined surface structure.

[0041] When the present invention is in use, it is divided into the following steps:

[0042] Step one: When in use, start the electric push rod one 9 to make its telescopic end push the sealing cover 10 to move upward to adjust the distance between the sealing cover 10 and the cleaning tank 1. After adjusting the distance between the two, place water and waste plastic in the cleaning tank 1. Then start the electric push rod one 9 again to make the sealing cover 10 move downward until the lower side of the sealing cover 10 contacts the upper side of the cleaning tank 1, and use the sealing cover 10 to seal the feed inlet of the cleaning tank 1;

[0043] Step 2: Start the motor 2, and let its output end drive the connecting rod 3 to rotate, so that multiple cutting knives 5 and the turning plate 4 rotate together. Use the turning plate 4 to turn the waste plastics, making them turn in the water. At the same time, use the cutting knives 5 to cut the waste plastics to perform pre-crushing treatment on them, reduce the volume of the waste plastics, and facilitate subsequent processing of other processes for the waste plastics;

[0044] Under the action of the turning plate 4 and the impact of the water flow, the cut plastics will be easier to turn in the water, which can improve the effect of cleaning waste plastics. And during the turning, the waste plastics will also rub against each other, which can further optimize the effect of cleaning waste plastics;

[0045] Step 3: After cleaning the waste plastics, place the water receiving container under the pair of water outlet pipes 17. Then open the valve 23 on the water outlet pipe 17, so that the water in the cleaning tank 1 flows out from the water outlet pipe 17 and falls into the water receiving container below the water outlet pipe 17;

[0046] Step 4: After taking out the water in the cleaning tank 1, close the valve 23 on the water outlet pipe 17 and seal the water outlet pipe 17. Then start the hot air blower 7 and the air pump 6. Use the air pump 6 to fill the hot air generated by the hot air blower 7 into the cleaning tank 1 through the air inlet pipe 8 to raise the temperature inside the cleaning tank 1 to dry the cleaned plastics;

[0047] At the same time, under the thrust of the gas, the turning plate 4 will drive the connecting rod 3 and the cutting knives 5 to rotate together, so as to cut the waste plastics again, improve its degree of crushing, and turn the waste plastics to make them evenly heated and improve the speed of drying them;

[0048] During the drying process, when the air pressure sensor 15 detects that the pressure in the cleaning tank 1 exceeds the set value, the controller 16 will start the electric push rod 2 13, and its telescopic end will push the sealing plate 14 upward until the sealing plate 14 is pushed out of the exhaust pipe 11, removing the sealing effect of the sealing plate 14 on the exhaust pipe 11. Then use the exhaust pipe 11 to exhaust and relieve the pressure of the cleaning tank 1;

[0049] After drying the waste plastics, move the sealing cover 10 upward to separate the sealing cover 10 from the cleaning tank 1. Finally, take out the cleaned and crushed waste plastics from the cleaning tank 1 and perform other processings on them.

[0050] In summary, when the present invention is in use, after water and waste plastics are put into the cleaning tank 1, the turning plate 4 is used to stir the waste plastics to increase the friction between the waste plastics and water and between the waste plastics, enhancing the effect of cleaning the waste plastics. At the same time, the cutting knife 5 is used to cut the waste plastics to increase the contact area between the waste plastics and water and make it easier for them to rotate in water, further improving the cleaning effect and facilitating subsequent processing of the waste plastics by personnel. When drying the waste plastics, the gas will blow the turning plate 4, and then drive the cutting knife 5 to rotate together to turn and cut the waste plastics again, so that the waste plastics are evenly heated, the drying speed is increased, and the degree of fragmentation of the waste plastics is improved.

[0051] The second embodiment:

[0052] On the basis of the first embodiment, the following structure is newly added, and the rest is the same as the first embodiment, specifically as follows:

[0053] Figures 6-9 It is shown that a plurality of horizontal pipes 18 are movably inserted inside the water outlet pipe 17. A threaded rod 19 is threadedly connected inside the water outlet pipe 17. The threaded rod 19 is movably inserted inside the horizontal pipe 18. An electric push rod three 20 is fixedly connected to the upper side of the horizontal pipe 18. A filter plate 21 is fixedly connected to the telescopic end of the electric push rod three 20. The aperture sizes of the plurality of filter plates 21 are the same. A pair of adjacent filter plates 21 are fixedly connected by a vertical rod 22;

[0054] A circular ring 24 is fixedly sleeved on the outer side of the filter plate 21. Friction lines 25 are engraved on the outer side of the circular ring 24. One end of the threaded rod 19 is inserted into the inner wall of the water outlet pipe 17. A pull rod 26 is fixedly connected to the lower side of the horizontal pipe 18. Anti-slip lines are engraved on the outer side of the pull rod 26. The surface of the circular ring 24 is slidably connected to the inner wall of the water outlet pipe 17;

[0055] A pair of guide grooves 27 are opened on the inner wall of the water outlet pipe 17. A pair of guide rods 28 that are movably inserted into the guide grooves 27 are fixedly connected to the outer side of the pull rod 26. The lower side of the guide groove 27 communicates with the water outlet end of the water outlet pipe 17. When installing the filter plate 21 inside the water outlet pipe 17, after inserting it into the filter plate 21, the guide rod 28 is made to enter the guide groove 27. The guide rod 28 is used to limit the horizontal pipe 18 to prevent it from rotating inside the water outlet pipe 17 and to facilitate the alignment of its installation end with the threaded rod 19, thereby facilitating the threaded rod 19 to enter it.

[0056] The present invention is used in the following steps:

[0057] Step 1: When draining water using the water outlet pipe 17, the filter plate 21 is used to filter the water to prevent plastics from entering the water outlet pipe 17;

[0058] Step 2: When the water flow rate and volume entering the water outlet pipe 17 decrease due to plastic accumulation on the upper side of the water outlet pipe 17, the controller two in the horizontal pipe 18 is used to start the electric push rod three 20, so that it pushes all the mechanisms on it to move upward together. The uppermost filter plate 21 is used to push the accumulated waste plastics upward to push the waste plastics accumulated on the water outlet pipe 17 away, so as to facilitate the water to enter the water outlet pipe 17, and then facilitate the normal drainage of the cleaning tank 1. After that, the water is filtered by other filter plates 21;

[0059] When the waste plastics accumulate on the upper side of the water outlet pipe 17 again, the above steps can be repeated to push the filter plate 21 in the middle upward to push the waste plastics accumulated on the upper side of the water outlet pipe 17 away;

[0060] Step 3: After the drainage is completed, the threaded rod 19 is taken out of the water outlet pipe 17, and then the filter plate 21 is pulled to take it out of the water outlet pipe 17. The ring 24 is used to scrape the foreign matters adhered to the inner wall of the water outlet pipe 17, and finally the filter plate 21 is cleaned;

[0061] In summary, during drainage, the filter plate 21 is used to filter plastics in the water to prevent plastic loss and waste. During the filtering process, the filter plate 21 can be pushed upward to push the plastics accumulated at the water inlet end of the water outlet pipe 17 away, so that the water in the cleaning tank 1 can smoothly enter the water outlet pipe 17, and then facilitate the normal drainage of the cleaning tank 1. During the process of taking out the filter plate 21 from the water outlet pipe 17, the inner wall of the water outlet pipe 17 can be cleaned by using the ring 24 to improve the cleanliness inside the water outlet pipe 17.

[0062] As Figure 10 shown, a method for recycling waste plastics according to the present invention uses the above-mentioned waste plastic recycling device, including the following steps:

[0063] S1: Put the waste plastics into the cleaning tank 1, pre-cut the plastics by using the cutting knife 5, and push the plastics to move by using the turning plate 4;

[0064] S2: After cleaning, the plastics are dried, and under the push of the gas, the cutting knife 5 rotates to cut the plastics again;

[0065] S3: Before drainage, the filter plate 21 is installed in the water outlet pipe 17. During drainage, the filter plate 21 filters the smaller plastics in the water to prevent them from moving into the water outlet pipe 17. At the same time, the filter plate 21 can be moved upward to push the plastics accumulated on the inner bottom wall of the cleaning tank 1 upward, so that the water can smoothly enter the water outlet pipe 17.

[0066] The above front, back, left, right, up, and down are all based on those in the specification drawings Figure 1Based on [a certain reference], with the perspective of observing the person as the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0067] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the protection scope of the present invention.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste plastic recycling device, comprising a cleaning tank (1), characterized in that: A motor (2) is fixedly connected to the side of the cleaning tank (1); A connecting rod (3) is fixedly connected to the output end of the motor (2). A plurality of turning plates (4) and cutting knives (5) are fixedly connected to the outer end of the connecting rod (3). One end of the connecting rod (3) rotatably penetrates the cleaning tank (1), and the end away from the motor (2) is rotatably inserted into the inner side wall of the cleaning tank (1); A pair of air pumps (6) are fixedly connected to the side of the cleaning tank (1). A hot air blower (7) is fixedly connected to the air inlet end of the air pump (6). An air inlet pipe (8) is fixedly connected to the air outlet end of the air pump (6); One end of the air inlet pipe (8) away from the air pump (6) is fixedly inserted into the interior of the cleaning tank (1), and the end of its air outlet is flush with the inner side wall of the cleaning tank (1) and is opposite to the turning plate (4) close to the inner side wall of the cleaning tank (1). A pair of water outlet pipes (17) are fixedly connected to the lower end of the cleaning tank (1). A valve (23) is fixedly connected to the outside of the water outlet pipe (17).

2. The waste plastic recycling device according to claim 1, characterized in that: A pair of electric push rods one (9) are fixedly connected to the upper side of the cleaning tank (1). The telescopic ends of the pair of electric push rods one (9) are fixedly connected to the same sealing cover (10). The interior of the sealing cover (10) is of an inclined plane structure, and its inclined direction is from top to bottom.

3. The waste plastic recycling device according to claim 2, characterized in that: An exhaust pipe (11) is fixedly connected to the upper end of the sealing cover (10). A connecting plate (12) is fixedly connected to the inner wall of the exhaust pipe (11). An electric push rod two (13) is fixedly connected to the upper side of the connecting plate (12). A sealing plate (14) is fixedly connected to the telescopic end of the electric push rod two (13).

4. The waste plastic recycling device according to claim 3, characterized in that: A pressure sensor (15) is fixedly connected to the lower side of the connecting plate (12). A controller one (16) is fixedly connected to the upper side of the connecting plate (12). The pressure sensor (15) and the electric push rod two (13) are both electrically connected to the controller one (16) through wires.

5. A waste plastic recycling device according to claim 1, characterized in that: The bottoms of the turning plate (4) and the cutting knife (5) located below the connecting rod (3) are both in contact with the inner bottom wall of the cleaning tank (1). The side of the turning plate (4) away from the connecting rod (3) is of an inclined plane structure.

6. The waste plastic recycling device according to claim 1, characterized in that: A plurality of transverse pipes (18) are movably inserted into the interior of the water outlet pipe (17). A threaded rod (19) is threadedly connected to the interior of the water outlet pipe (17). The threaded rod (19) is movably inserted into the interior of the transverse pipe (18). An electric push rod three (20) is fixedly connected to the upper side of the transverse pipe (18). A filter plate (21) is fixedly connected to the telescopic end of the electric push rod three (20). A pair of adjacent filter plates (21) are fixedly connected by a vertical rod (22).

7. A waste plastic recycling device according to claim 6, characterized in that: A circular ring (24) is fixedly sleeved on the outer side of the filter plate (21). Friction stripes (25) are engraved on the outer side of the circular ring (24). One end of the threaded rod (19) is inserted into the inner wall of the water outlet pipe (17).

8. The waste plastic recycling device according to claim 6, characterized in that: A pull rod (26) is fixedly connected to the lower side of the transverse pipe (18). Anti-slip stripes are engraved on the outer side of the pull rod (26). The surface of the circular ring (24) is slidably connected to the inner wall of the water outlet pipe (17).

9. The waste plastic recycling device according to claim 8, wherein: A pair of guiding grooves (27) are formed on the inner wall of the water outlet pipe (17). A pair of guiding rods (28) which are movably inserted into the guiding grooves (27) are fixedly connected to the outer side of the drawing rod (26). The lower side of the guiding groove (27) communicates with the water outlet end of the water outlet pipe (17).

10. A method for recycling waste plastics, which uses the waste plastic recycling device described in claim 9, characterized in that: including the following steps; S1: Put waste plastics into the cleaning tank (1), pre-cut the plastics by using the cutting knife (5), and push the plastics to move through the turning plate (4); S2: After cleaning, dry the plastics, and under the push of the gas, rotate the cutting knife (5) to cut the plastics again; S3: Before draining water, install the filter plate (21) in the water outlet pipe (17). When draining water, the filter plate (21) filters out smaller plastics in the water to prevent them from moving into the water outlet pipe (17). At the same time, the filter plate (21) can be moved upward to push the plastics piled on the inner bottom wall of the cleaning tank (1) upward, so that the water can smoothly enter the water outlet pipe (17).

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