A device for preparing recycled plastic pellets and a preparation method thereof

Abstract

The present invention discloses a device for preparing recycled plastic particles, which includes a preparation box. A heater is fixedly installed on the preparation box, and a heating rod is fixedly installed at the output end of the heater. The heating rod is located inside the preparation box, and a cooling box is fixedly installed on the lower end surface of the preparation box body. During the use of the present invention, when the pressing rod descends, the wind generated by the fan blades will discharge the heat dissipated by the heat dissipation fins into the collection box, thereby drying the plastic particles in the collection box. At the same time, the ejector rod on the installation cylinder will hit the installation frame and generate vibrations, and the water droplets on the surface of the plastic particles on the grid plate will fall to the inner bottom of the collection box. By using the displacement generated by the ejector rod hitting the installation frame, the stirring blades on the threaded rod will rotate, and the plastic particles in the collection box are stirred by the stirring blades, so that the plastic particles in the collection box are evenly contacted with the hot air, thereby improving the drying effect of the plastic particles.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic particle preparation, and specifically provides a device for preparing recycled plastic particles and a preparation method thereof. Background Art

[0002] Recycled particles are short for recycled plastic particles. Recycled plastic particles belong to the category of plastic particles. Recycled plastics are plastics produced by recycling used new materials or waste plastics through a screw machine and then cut into granular form by a granulator.

[0003] In the prior art, a plastic particle preparation device with the publication number "CN209569970U" discloses that plastic particles are transported into an insulation box through a material loading device by an electric push rod, and the heating wire at the bottom end inside the insulation box generates heat, and the hot air is evenly sprayed into the insulation box through a heat conduction plate to dry the wet materials. A sealing cover is provided on one side of the insulation box, and the other end of the material loading device is fixedly connected to one side of the sealing cover through a support rod. The door is automatically opened when the electric push rod outputs materials, saving the labor intensity of workers. The device has a simple structure, improves the drying effect, reduces the waste of resources in the drying operation, and greatly improves the production efficiency, solving the problems that the drying device used in the existing plastic preparation has a relatively simple structure, poor sealing performance, long drying time due to incomplete absorption of the volatilized moisture, and uneven drying of plastic particles, and incomplete drying of some plastic particles not on the surface.

[0004] However, there are still significant deficiencies in the prior art, such as:

[0005] Currently, when preparing plastic particles, most use a water cooling method to cool the extruded plastic strip, and then cut it into particles through a cutting mechanism and collect it through a collection box. Since the cooling method is that the plastic strip is directly immersed in cold water during the moving process for cooling, the cooling effect is not good, which easily causes poor quality when cut into particles, and there will also be water droplets on the surface of the plastic particles in the collection box. Since the water cooling method is adopted, heat will be transferred to the cold water through heat transfer. When the cold water is used for a long time, the cold water will become hot. In order to make the cold water reusable, usually a heat exchanger is used to discharge the heat in the cold water, but direct discharge will cause waste of heat resources. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for preparing recycled plastic particles and a preparation method thereof to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A device for preparing recycled plastic particles, including a preparation box, a heater is fixedly installed on the preparation box, an output end of the heater is fixedly installed with a heating rod, the position of the heating rod is inside the preparation box, a lower end surface of the preparation box body is fixedly installed with a cooling box, a porous plate is fixedly installed inside an inner top of the cooling box, the preparation box is communicated with the porous plate through a through groove, plastic strips discharged from the porous plate fall into the inside of the cooling box, and the plastic strips are cooled by cold water in the cooling box. A cutting mechanism and a collection box are fixedly installed on a lower surface of the cooling box, the cutting mechanism is inside the collection box, the plastic strips enter the cutting mechanism through discharge holes, and are cut into particles by the cutting mechanism and fall into the collection box;

[0009] A pushing component is arranged on an upper end surface of the preparation box, an extrusion plate is arranged on the pushing component, the position of the extrusion plate is inside the preparation box, and molten plastic is extruded through the extrusion plate;

[0010] A heat exchange mechanism is arranged inside the cooling box, and the heat exchange mechanism blows hot air into the collection box through a blowing component, and the hot air contacts the particles in the collection box to dry the particles with water droplets on the surface.

[0011] Preferably, the pushing component includes a support plate, a hydraulic cylinder is fixedly installed on the support plate, an output end of the hydraulic cylinder is fixedly installed with a U-shaped frame, an end of the U-shaped frame extends into the preparation box, the end of the U-shaped frame is fixedly installed with an upper end surface of an extrusion plate, and the extrusion plate is slidably installed with the heating rod.

[0012] Preferably, a pressing rod is fixedly installed on a side cross section of the U-shaped frame, the blowing component includes an L-shaped lifting rod and a fixing plate, the lifting rod is slidably installed inside an inner side wall of the cooling box through a limiting component, the fixing plate is installed inside the cooling box through an installation groove, a spiral rod is fixedly installed on a lower end surface of the lifting rod, a rotating block is rotatably installed on the fixing plate, a sleeve is fixedly installed inside the rotating block, the spiral rod is movably installed with the sleeve, and a fan blade is fixedly installed on the sleeve. The fan blade is driven to rotate at a high speed by a power source generated when the pressing rod presses down;

[0013] A concentrating block is fixedly installed at an outlet of the installation groove, a conduit is fixedly installed at an outlet of the concentrating block, and one end of the conduit away from the concentrating block is communicated with the collection box.

[0014] Preferably, the limiting component includes a sliding plate installed on the lifting rod, a first spring is fixedly installed on the sliding plate, the sliding plate is slidably installed inside the inner side wall of the cooling box through a sliding groove, and one end of the first spring away from the sliding plate is fixedly installed at an inner bottom of the sliding groove. The lifting plate is restored to its original position by the elastic performance of the first spring.

[0015] Preferably, a support plate is fixedly installed inside the cooling box. An air pressure cylinder is fixedly installed on the support plate. A push rod is slidably installed in the air pressure cylinder. The top end of the push rod is fixedly installed on the lower end surface of the lifting rod. The output end of the air pressure cylinder is fixedly installed with an air delivery pipe. The end of the air delivery pipe away from the air pressure cylinder is fixedly installed with an aeration component;

[0016] An installation frame is slidably installed on the inner side wall of the collection box. A grid plate is arranged inside the installation frame. The aeration component vibrates the installation frame so that the plastic particle water droplets on the grid plate fall to the bottom of the collection box.

[0017] Preferably, the aeration component includes an installation cylinder. A second spring is fixedly installed on the inner bottom of the installation cylinder. The top end of the second spring is fixedly installed with a lifting plate. A top rod is fixedly installed on the lifting plate. An exhaust pipe is fixedly installed on the installation cylinder. A pneumatic valve is arranged inside the exhaust pipe. The limit value of the pneumatic valve causes the top rod to emit a timed frequency of impact.

[0018] Preferably, a threaded rod is rotatably installed on the installation frame. A cross plate is fixedly installed inside the collection box. The cross plate is installed above the installation frame. The end of the threaded rod away from the installation frame passes through the cross plate. The threaded rod is threadedly installed with the cross plate. Stirring blades are fixedly installed on the threaded rod. The impact of the top rod causes the installation frame to displace. When the installation frame displaces, it drives the threaded rod to rotate, thereby driving the stirring blades to stir the plastic particles in the collection box.

[0019] Preferably, a water pump is fixedly installed inside the inner bottom of the cooling box. The input pipe of the water pump is communicated with the cooling box. The output end of the water pump is fixedly installed with a shunt pipe. The end of the shunt pipe away from the water pump is fixedly installed with a telescopic hose. A guide pipe is fixedly installed on the telescopic hose. Nozzles are arranged on the guide pipe. The cold water in the cooling box is sprayed on the plastic strips through the nozzles.

[0020] Preferably, the guide pipe is rotatably installed inside the cooling box through a rotating shaft. A torsion spring is fixedly installed on the rotating shaft. The end of the torsion spring away from the rotating shaft is installed in the rotating groove of the cooling box. Discontinuously arranged tooth blocks are fixedly installed on the lifting rod. A gear is fixedly installed on the rotating shaft. The gear is located outside the torsion spring. Through the engagement of the tooth blocks and the gear, when the lifting rod descends, the guide pipe will be in a swinging state, so that the cooling water sprayed by the nozzles is evenly sprayed on the plastic strips.

[0021] A preparation method, based on the regenerated plastic particle preparation device described in any one of the above, includes the following steps:

[0022] S1. Open the door of the preparation box, then put the plastic raw materials into the box body. The plastic raw materials in the preparation box can be melted by heating with the heating rod. Then open the valve in the through groove and close the door of the preparation box. Then, through the hydraulic cylinder, the extrusion plate can be driven to move downward by the U-shaped frame, and the melted plastic raw materials in the box body can be extruded onto the porous plate to form plastic strips through the porous plate.

[0023] S2. The extruded plastic strips will directly fall into the cooling box. The cooling water in the cooling box is introduced into the diversion pipe through the water pump and the telescopic hose, and is sprayed on the plastic strips through the nozzles on the diversion pipe. When the U-shaped frame descends a certain height, it will press down the lifting rod. The intermittent teeth on the lifting rod mesh with the gear on the conduit, and the torsion of the torsion spring makes the diversion pipe in a swinging state, so that the cooling water sprayed by the nozzle is evenly sprayed on the plastic strips.

[0024] S3. The cooled plastic strips are discharged through the discharge holes in the cooling box, and then are cut into plastic particles by the cutting mechanism to the plastic sleeve. The cut plastic particles will directly fall into the collection box. The heat of the cold water in the cooling box is discharged into the installation groove by the heat exchange mechanism. When the lifting rod descends, it will synchronously drive the screw rod to descend. The screw rod will fall into the sleeve. The sleeve will rotate on the fixed plate through the rotating block. The positioning rotation of the sleeve will drive the fan blades to rotate. The wind generated by the fan blades will be discharged into the collection box through the concentrating block and the conduit, so as to air-dry the plastic particles in the collection box.

[0025] S4. When the pressing rod descends, it will also drive the piston on the push rod to move in the air cylinder. The gas discharged from the air cylinder will enter the installation cylinder through the air pipe. The installation cylinder will squeeze the lifting plate to descend by the filling of the gas. When the pressure in the installation cylinder reaches a certain value, it will be discharged through the exhaust pipe. And the lifting plate drives the ejector rod on the lifting plate to eject through the elastic performance of the spring. The ejector rod will hit the installation frame and generate vibration. When the installation frame vibrates, the water droplets on the surface of the plastic particles on the grid plate will directly fall to the inner bottom of the collection box.

[0026] S5. The ejector rod will generate displacement when hitting the installation frame. Through the threaded cooperation of the threaded rod and the cross plate, the threaded rod can be rotated. When the threaded rod rotates, it will drive the stirring blades on the threaded rod to rotate. The stirring blades can be used to stir the plastic particles in the collection box, so that the plastic particles in the collection box are evenly contacted with the hot air, thereby improving the drying effect of the plastic particles. Finally, open the door of the collection box, and then take out the dried plastic particles.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. In the present invention, while the lifting plate descends, it will simultaneously drive the screw rod to descend. The threaded rod will fall into the sleeve, and the sleeve will rotate on the fixed plate through the rotating block. Through the positioning rotation of the sleeve, the fan blades will be driven to rotate. The wind generated by the fan blades will discharge the heat dissipated by the heat dissipation fins into the collection box through the concentration block and the conduit, thereby drying the plastic particles in the collection box.

[0029] 2. In the present invention, while the pressing rod descends, it will drive the piston on the push rod to move within the air pressure cylinder. The gas discharged from the air pressure cylinder will enter the installation cylinder through the air delivery pipe. The installation cylinder will squeeze the lifting plate to descend through the charging of the gas. When the pressure in the installation cylinder reaches a certain value, it will be discharged through the exhaust pipe. And the lifting plate will drive the ejector rod on the lifting plate to eject through the elastic performance of the spring. The ejector rod will strike the installation frame and generate vibrations. When the installation frame vibrates, the water droplets on the surface of the plastic particles on the grid plate will directly fall to the inner bottom of the collection box.

[0030] 3. In the present invention, when the ejector rod strikes the installation frame, it will generate displacement, which can cause the threaded rod to rotate. When the threaded rod rotates, it will drive the stirring blades on the threaded rod to rotate. The stirring blades can be used to stir the plastic particles in the collection box, so that the plastic particles in the collection box are evenly in contact with the hot air, thereby improving the drying effect of the plastic particles.

[0031] 4. In the present invention, the cooling box is introduced into the diversion pipe through the shunt pipe and the telescopic hose by the water pump, and is sprayed on the plastic strip through the nozzles on the diversion pipe. The sprayed water can improve the cooling effect of the plastic strip.

[0032] 5. In the present invention, when the lifting rod descends, the intermittent tooth blocks on the lifting rod engage with the gears on the conduit, and the diversion pipe is in a swinging state by using the torsion of the torsion spring, so that the cooling water sprayed by the nozzles on the diversion pipe is evenly sprayed on the plastic strip, further improving the cooling effect of the plastic strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a three-dimensional structure schematic diagram of the overall structure of the present invention;

[0034] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0035] Figure 3 is Figure 2 an enlarged view of part A in

[0036] Figure 4 is Figure 2 an enlarged view of part B in

[0037] Figure 5 is a schematic diagram of the internal structure of the cooling box in the present invention;

[0038] Figure 6 Schematic structural diagram of the engagement between the tooth block and the gear in the present invention;

[0039] Figure 7 Schematic internal structural diagram of the mounting cylinder in the present invention;

[0040] Figure 8 Schematic structural diagram of the stirring blade in the present invention;

[0041] Figure 9 Schematic internal structural diagram of the fixing plate in the present invention.

[0042] In the figure: 1, preparation box; 2, heater; 3, heating rod; 4, cooling box; 5, porous plate; 6, cutting mechanism; 7, collection box; 8, support plate; 9, hydraulic cylinder; 10, U-shaped frame; 11, extrusion plate; 12, lower pressing rod; 13, lifting rod; 14, fixing plate; 15, screw rod; 16, rotating block; 17, sleeve; 18, fan blade; 19, concentrating block; 20, conduit; 21, heat exchange mechanism; 22, sliding plate; 23, first spring; 24, support plate; 25, air pressure cylinder; 26, push rod; 27, air delivery pipe; 28, mounting frame; 29, grid plate; 30, mounting cylinder; 31, second spring; 32, lifting plate; 33, ejector rod; 34, exhaust pipe; 35, threaded rod; 36, cross plate; 37, stirring blade; 38, water pump; 39, shunt pipe; 40, telescopic hose; 41, diversion pipe; 42, nozzle; 43, rotating shaft; 44, torsion spring; 45, tooth block; 46, gear. Specific embodiments

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1-9 , the present invention provides a technical solution: Embodiment

[0045] Please refer to Figures 1-2, A device for preparing recycled plastic particles, including a preparation box 1. The front surfaces of both the preparation box 1 and the collection box 7 are provided with box doors, which facilitate the taking and placing of plastic raw materials and plastic particles. A heater 2 is fixedly installed on the preparation box 1, and a heating rod 3 is fixedly installed at the output end of the heater 2. The heating rod 3 is located inside the preparation box 1. The lower end surface of the preparation box 1 is fixedly installed with a cooling box 4. A perforated plate 5 is fixedly installed inside the inner top of the cooling box 4. The preparation box 1 is communicated with the perforated plate 5 through a through groove. The plastic strips discharged from the perforated plate 5 fall into the cooling box 4, and the plastic strips are cooled by the cold water in the cooling box 4. A cutting mechanism 6 and a collection box 7 are fixedly installed on the lower surface of the cooling box 4. The cutting mechanism 6 is composed of an electric push rod 26 and a cutting blade, which is prior art and not specifically shown in the figure. The cutting mechanism 6 is located inside the collection box 7. The plastic strips enter the cutting mechanism 6 through the discharge holes and are cut into particles by the cutting mechanism 6 and fall into the collection box 7. A drain port can be provided at the inner bottom of the collection box 7, which is not shown in the figure. This technology is a conventional technical means in this field and will not be specifically described here;

[0046] In this embodiment, by opening the box door on the preparation box 1, then the plastic raw materials need to be put into the box body. The plastic raw materials in the preparation box 1 can be melted by the heating of the heating rod 3. Then, open the valve in the through groove and close the box door on the preparation box 1 to form plastic strips through the perforated plate 5. The extruded material strips are cut into plastic particles by the cutting mechanism 6 and fall into the collection box 7.

[0047] Please refer to Figure 1 , A pushing component is provided on the upper end surface of the preparation box 1. The pushing component includes a support plate 8. A hydraulic system can be provided on the support plate 8 to facilitate the operation of the hydraulic cylinder 9. A hydraulic cylinder 9 is fixedly installed on the support plate 8. The output end of the hydraulic cylinder 9 is fixedly installed with a U-shaped frame 10. The end of the U-shaped frame 10 extends into the preparation box 1. The end of the U-shaped frame 10 is fixedly installed with the upper end surface of the extrusion plate. The extrusion plate is slidably installed with the heating rod 3. An extrusion plate 11 is provided on the pushing component. The extrusion plate 11 is located inside the preparation box 1. The molten plastic is extruded through the extrusion plate 11;

[0048] In this embodiment, by using the hydraulic cylinder 9 to drive the extrusion plate to move downward through the U-shaped frame 10, the molten plastic raw materials in the box body can be extruded into the perforated plate 5, which can accelerate the formation of plastic strips and thus improve the effect of preparing plastic particles.

[0049] Please refer to Figures 2-3, inside the cooling box 4, there is a heat exchange mechanism 21 installed. The heat exchange mechanism 21 is composed of heat exchange tubes, heat conducting plates and heat dissipation fins. The heat exchange tubes are inside the cooling box 4, and the heat dissipation fins are inside the installation groove. Since the heat exchange mechanism 21 is an existing technology and is not marked in the figure, the heat exchange mechanism 21 blows hot air into the collection box 7 through a blowing component, and dries the particles with water droplets on the surface by contacting the hot air with the particles in the collection box 7.

[0050] In this embodiment, the heat exchange tubes can absorb the heat in the cold water in the cooling box 4, and then the heat conducting plates direct the heat to the heat dissipation fins. The heat can be discharged through the heat dissipation fins, avoiding the influence of these heats on the cooling effect of the cold water.

[0051] Please refer to Figures 1-3 and Figures 5-6 and Figure 9 , a pressing rod 12 is fixedly installed on the side section of the U-shaped frame 10. The blowing component includes an L-shaped lifting rod 13 and a fixing plate 14. The lifting rod 13 is slidably installed inside the inner side wall of the cooling box 4 through a limiting component. The fixing plate 14 is installed inside the cooling box 4 through an installation groove. A spiral rod 15 is fixedly installed on the lower end surface of the lifting rod 13. The side end surface of the spiral rod 15 is in a twist shape. A rotating block 16 is rotatably installed on the fixing plate 14. A sleeve 17 is fixedly installed inside the rotating block 16. The spiral rod 15 is movably installed with the sleeve 17. A fan blade 18 is fixedly installed on the sleeve 17. The power source generated when the pressing rod 12 presses down drives the fan blade 18 to rotate at a high speed. A concentrating block 19 is fixedly installed at the outlet of the installation groove. A conduit 20 is fixedly installed at the outlet of the concentrating block 19. One end of the conduit 20 away from the concentrating block 19 is communicated with the collection box 7.

[0052] In this embodiment, when the pressing rod 12 descends to a certain height, it will drive the lifting rod 13 to descend. When the lifting plate 32 descends, it will simultaneously drive the spiral rod 15 to descend synchronously. The spiral rod 15 will fall into the sleeve 17. The sleeve 17 will rotate on the fixing plate 14 through the rotating block 16. The positioning rotation of the sleeve 17 will drive the fan blade 18 to rotate. The wind generated by the fan blade 18 will discharge the heat dissipated by the heat dissipation fins into the collection box 7 through the concentrating block 19 and the conduit 20, thereby drying the plastic particles in the collection box 7.

[0053] Please refer to Figures 2 and 4. The limiting component includes a sliding plate 22 installed on the lifting rod 13. A first spring 23 is fixedly installed on the sliding plate 22. The sliding plate 22 is slidably installed inside the inner side wall of the cooling box 4 through a sliding groove. One end of the first spring 23 away from the sliding plate 22 is fixedly installed at the inner bottom of the sliding groove. The elastic performance of the first spring 23 enables the lifting plate 32 to return to its original position.

[0054] In this embodiment, when the lowering rod returns to its original state and the lifting rod 13 is pressed downward without external force, the elastic performance of the first spring 23 will drive the sliding plate 22 to slide in the sliding groove. When the sliding plate 22 slides, it will synchronously drive the lifting rod 13 to move. The elastic performance of the sliding plate 22 and the first spring 23 can make the lifting rod 13 return to its original state. Embodiment

[0055] Please refer to Figures 5-7 , on the basis of the first embodiment, in order to make the plastic particles in the collection box 7 come into better contact with the hot air, a support plate 24 is fixedly installed inside the cooling box 4. A pneumatic cylinder 25 is fixedly installed on the support plate 24. A push rod 26 is slidably installed in the pneumatic cylinder 25. The top end of the push rod 26 is fixedly installed on the lower end surface of the lifting rod 13. The output end of the pneumatic cylinder 25 is fixedly installed with an air delivery pipe 27. A one-way valve is arranged inside the air delivery pipe 27. One end of the air delivery pipe 27 away from the pneumatic cylinder 25 is fixedly installed with an aeration assembly. The aeration assembly includes an installation cylinder 30. A second spring 31 is fixedly installed on the inner bottom of the installation cylinder 30. The top end of the second spring 31 is fixedly installed with a lifting plate 32. A top rod 33 is fixedly installed on the lifting plate 32. An exhaust pipe 34 is fixedly installed on the installation cylinder 30. A pneumatic valve is arranged inside the exhaust pipe 34. The limiting value of the pneumatic valve causes the top rod 33 to emit a timed frequency of impact. An installation frame 28 is slidably installed on the inner side wall of the collection box 7. A grid plate 29 is arranged inside the installation frame 28. The plastic particle water droplets on the grid plate 29 fall to the bottom of the collection box 7 by vibrating the installation frame 28 through the aeration assembly.

[0056] In this embodiment, when the pressing rod 12 descends, it will also drive the piston on the push rod 26 to move inside the pneumatic cylinder 25. The gas discharged from the pneumatic cylinder 25 will enter the installation cylinder 30 through the air delivery pipe 27. The installation cylinder 30 will squeeze the lifting plate 32 to descend by the filling of the gas. When the pressure inside the installation cylinder 30 reaches a certain value, it will be discharged through the exhaust pipe 34. And the lifting plate 32 drives the top rod 33 on the lifting plate 32 to eject through the elastic performance of the spring. The top rod 33 will impact on the installation frame 28 and generate vibration. When the installation frame 28 vibrates, the water droplets on the surface of the plastic particles on the grid plate 29 will directly fall to the inner bottom of the collection box 7. Embodiment

[0057] Please refer to FIGS. 5-8. On the basis of Embodiment 1, in order to ensure uniform contact between the hot air and the plastic particles, a stirring blade is used to achieve this function. A threaded rod 35 is rotatably installed on the mounting frame 28. A cross plate 36 is fixedly installed inside the collection box 7, and the cross plate 36 is installed above the mounting frame 28. One end of the threaded rod 35 away from the mounting frame 28 passes through the cross plate 36, and the threaded rod 35 is threadedly installed with the cross plate 36. A stirring blade 37 is fixedly installed on the threaded rod 35. When the mounting frame 28 is displaced by the impact of the ejector rod 33, the threaded rod 35 will rotate when the mounting frame 28 is displaced, and thus the stirring blade 37 will drive to stir the plastic particles in the collection box 7.

[0058] In this embodiment, when the ejector rod 33 impacts the mounting frame 28, it will produce displacement. By using the rotating block 16, the threaded rod 35 can rotate on the mounting frame 28 and the threaded installation of the threaded rod 35 and the cross plate 36, the threaded rod 35 can rotate. When the threaded rod 35 rotates, the stirring blade 37 on the threaded rod 35 will rotate. The stirring blade 37 can be used to stir the plastic particles in the collection box 7, so that the plastic particles in the collection box 7 are evenly in contact with the hot air, thereby improving the drying effect of the plastic particles. Embodiment

[0059] Please refer to Figures 5-6 On the basis of Embodiment 1, a water pump 38 is fixedly installed inside the inner bottom of the cooling box 4. The input pipe of the water pump 38 is communicated with the cooling box 4. The output end of the water pump 38 is fixedly installed with a shunt pipe 39. One end of the shunt pipe 39 away from the water pump 38 is fixedly installed with a telescopic hose 40. The telescopic hose 40 is fixedly installed with a diversion pipe 41. A nozzle 42 is arranged on the diversion pipe 41. The cold water in the cooling box 4 is sprayed on the plastic strip through the nozzle 42.

[0060] In this embodiment, the cooling water in the cooling box 4 is introduced into the diversion pipe 41 through the shunt pipe 39 and the telescopic hose 40 by the water pump 38, and is sprayed on the plastic strip through the nozzle 42 on the diversion pipe 41. The sprayed water can improve the cooling effect of the plastic strip. Embodiment

[0061] On the basis of Embodiment 1

[0062] Please refer to Figure 6 The diversion pipe 41 is rotatably installed inside the cooling box 4 through a rotating shaft 43. A torsion spring 44 is fixedly installed on the rotating shaft 43. One end of the torsion spring 44 away from the rotating shaft 43 is installed in the rotating groove of the cooling box 4. Intermittently arranged tooth blocks 45 are fixedly installed on the lifting rod 13. A gear 46 is fixedly installed on the rotating shaft 43. The gear 46 is located outside the torsion spring 44. Through the engagement of the tooth block 45 and the gear 46, when the lifting rod 13 descends, the diversion pipe 41 will be in a swinging state.

[0063] In this embodiment, when the U-shaped frame 10 descends a certain height, it presses down the lifting rod 13. The intermittent tooth blocks 45 on the lifting rod 13 engage with the gear 46 on the conduit 20, and the torsion spring 44 is used to make the diversion pipe 41 in a swinging state, so that the cooling water sprayed by the nozzle 42 on the diversion pipe 41 is evenly sprayed on the plastic strip, further improving the cooling effect of the plastic strip.

[0064] A preparation method, based on a regenerated plastic particle preparation device as described above, includes the following steps:

[0065] S1. Open the door of the preparation box 1, then put the plastic raw materials into the box body. The plastic raw materials in the preparation box 1 can be melted by heating with the heating rod 3. Then open the valve in the through groove and close the door of the preparation box 1. Then, use the hydraulic cylinder 9 to drive the extrusion plate to move down with the U-shaped frame 10, and the melted plastic raw materials in the box body can be extruded onto the porous plate 5 to form plastic strips through the porous plate 5.

[0066] S2. The extruded plastic strips will directly fall into the cooling box 4. The cooling box 4 is connected to the diversion pipe 41 through the water pump 38, the shunt pipe 39 and the telescopic hose 40. The cooling water is sprayed on the plastic strips through the nozzle 42 on the diversion pipe 41. When the U-shaped frame 10 descends a certain height, it presses down the lifting rod 13. The intermittent tooth blocks 45 on the lifting rod 13 engage with the gear 46 on the conduit 20, and the torsion spring 44 is used to make the diversion pipe 41 in a swinging state, so that the cooling water sprayed by the nozzle 42 is evenly sprayed on the plastic strips.

[0067] S3. The cooled plastic strips are discharged through the discharge holes in the cooling box 4, and then cut into plastic particles by the cutting mechanism 6. The cut plastic particles will directly fall into the collection box 7. The heat of the cold water in the cooling box 4 is discharged into the installation groove by the heat exchange mechanism 21. When the lifting rod 13 descends, it will synchronously drive the screw rod 15 to descend. The screw rod 15 will fall into the sleeve 17. The sleeve 17 will rotate on the fixed plate 14 through the rotating block 16. The positioning rotation of the sleeve 17 will drive the fan blade 18 to rotate. The wind generated by the fan blade 18 will discharge the heat dissipated by the heat dissipation fins into the collection box 7 through the concentration block 19 and the conduit 20, so as to air-dry the plastic particles in the collection box 7.

[0068] S4. While the pressing rod 12 descends, it will also drive the piston on the push rod 26 to move within the pneumatic cylinder 25. The gas discharged from the pneumatic cylinder 25 will enter the installation cylinder 30 through the air delivery pipe 27. The installation cylinder 30 will squeeze the lifting plate 32 to descend through the filling of gas. When the pressure within the installation cylinder 30 reaches a certain value, it will be discharged through the exhaust pipe 34. Moreover, the lifting plate 32 will drive the ejector rod 33 on the lifting plate 32 to eject through the elastic performance of the spring. The ejector rod 33 will strike the mounting frame 28 and generate vibrations. When the mounting frame 28 vibrates, the water droplets on the surface of the plastic particles on the grid plate 29 will directly fall to the inner bottom of the collection box 7;

[0069] S5. When the ejector rod 33 strikes the mounting frame 28, it will generate displacement. Through the threaded fit between the threaded rod 35 and the cross plate 36, the threaded rod 35 can be rotated. When the threaded rod 35 rotates, it will drive the stirring blade 37 on the threaded rod 35 to rotate. The stirring blade 37 can be used to stir the plastic particles in the collection box 7, enabling the plastic particles in the collection box 7 to uniformly contact the hot air, thereby improving the drying effect of the plastic particles. Finally, open the door of the collection box 7, and then take out the dried plastic particles.

[0070] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing recycled plastic particles, comprising a preparation tank (1), characterized in that: A heater (2) is fixedly installed on the preparation box (1). The output end of the heater (2) is fixedly installed with a heating rod (3). The heating rod (3) is located inside the preparation box (1). The lower end surface of the preparation box (1) body is fixedly installed with a cooling box (4). A porous plate (5) is fixedly installed inside the inner top of the cooling box (4). The preparation box (1) is communicated with the porous plate (5) through a through groove. The plastic strips discharged from the porous plate (5) fall into the cooling box (4). The cold water in the cooling box (4) cools the plastic strips. A cutting mechanism (6) and a collection box (7) are fixedly installed on the lower surface of the cooling box (4). The cutting mechanism (6) is located inside the collection box (7). The plastic strips enter the cutting mechanism (6) through the discharge holes and are cut into particles by the cutting mechanism (6) and fall into the collection box (7). A pushing component is arranged on the upper end surface of the preparation box (1). An extrusion plate (11) is arranged on the pushing component. The extrusion plate (11) is located inside the preparation box (1). The molten plastic is extruded through the extrusion plate (11). A heat exchange mechanism (21) is arranged inside the cooling box (4). The heat exchange mechanism (21) blows hot air into the collection box (7) through a blowing component. The hot air contacts the particles in the collection box (7) to dry the particles with water droplets on the surface. The pushing component includes a support plate (8). A hydraulic cylinder (9) is fixedly installed on the support plate (8). The output end of the hydraulic cylinder (9) is fixedly installed with a U-shaped frame (10). The end of the U-shaped frame (10) extends into the preparation box (1). The end of the U-shaped frame (10) is fixedly installed with the upper end surface of the extrusion plate. The extrusion plate is slidably installed with the heating rod (3). A pressing rod (12) is fixedly installed on the side section of the U-shaped frame (10). The blowing component includes an L-shaped lifting rod (13) and a fixing plate (14). The lifting rod (13) is slidably installed inside the inner side wall of the cooling box (4) through a limiting component. The fixing plate (14) is installed inside the cooling box (4) through an installation groove. A screw rod (15) is fixedly installed on the lower end surface of the lifting rod (13). A rotating block (16) is rotatably installed on the fixing plate (14). A sleeve (17) is fixedly installed inside the rotating block (16). The screw rod (15) is movably installed with the sleeve (17). A fan blade (18) is fixedly installed on the sleeve (17). The power source generated when the pressing rod (12) presses down drives the fan blade (18) to rotate at a high speed. A concentrating block (19) is fixedly installed at the outlet of the installation groove. A conduit (20) is fixedly installed at the outlet of the concentrating block (19). One end of the conduit (20) away from the concentrating block (19) is communicated with the collection box (7). The limiting component includes a sliding plate (22) installed on the lifting rod (13). A first spring (23) is fixedly installed on the sliding plate (22). The sliding plate (22) is slidably installed inside the inner side wall of the cooling box (4) through a sliding groove. One end of the first spring (23) away from the sliding plate (22) is fixedly installed at the inner bottom of the sliding groove. The elastic performance of the first spring (23) enables the lifting plate (32) to return to its original position. A support plate (24) is fixedly installed inside the cooling box (4). An air pressure cylinder (25) is fixedly installed on the support plate (24). A push rod (26) is slidably installed in the air pressure cylinder (25). The top end of the push rod (26) is fixedly installed on the lower end surface of the lifting rod (13). The output end of the air pressure cylinder (25) is fixedly installed with an air delivery pipe (27). One end of the air delivery pipe (27) away from the air pressure cylinder (25) is fixedly installed with an aeration component. A mounting frame (28) is slidably installed on the inner side wall of the collection box (7). A grid plate (29) is arranged inside the mounting frame (28). The aeration component vibrates the mounting frame (28) so that the plastic particle water droplets on the grid plate (29) fall to the bottom of the collection box (7). The aeration component includes a mounting cylinder (30). A second spring (31) is fixedly installed at the inner bottom of the mounting cylinder (30). The top end of the second spring (31) is fixedly installed with a lifting plate (32). A top rod (33) is fixedly installed on the lifting plate (32). An exhaust pipe (34) is fixedly installed on the mounting cylinder (30). An air pressure valve is arranged inside the exhaust pipe (34). The limiting value of the air pressure valve enables the top rod (33) to issue a shock at a regular frequency. A threaded rod (35) is rotatably installed on the mounting frame (28). A cross plate (36) is fixedly installed inside the collection box (7). The cross plate (36) is installed above the mounting frame (28). One end of the threaded rod (35) away from the mounting frame (28) passes through the cross plate (36). The threaded rod (35) is threadedly installed with the cross plate (36). Stirring blades (37) are fixedly installed on the threaded rod (35). The impact of the top rod (33) will displace the mounting frame (28). When the mounting frame (28) is displaced, it will drive the threaded rod (35) to rotate, thereby driving the stirring blades (37) to stir the plastic particles in the collection box (7).

2. The preparation device for recycled plastic particles according to claim 1, wherein: A water pump (38) is fixedly installed inside the inner bottom of the cooling box (4). The input pipe of the water pump (38) is communicated with the cooling box (4). The output end of the water pump (38) is fixedly installed with a shunt pipe (39). One end of the shunt pipe (39) away from the water pump (38) is fixedly installed with a telescopic hose (40). A guide pipe (41) is fixedly installed on the telescopic hose (40). Nozzles (42) are arranged on the guide pipe (41). The cold water in the cooling box (4) is sprayed on the plastic strips through the nozzles (42).

3. The preparation device of recycled plastic particles according to claim 2, characterized in that: The diversion pipe (41) is rotatably installed inside the cooling box (4) through a rotating shaft (43). A torsion spring (44) is fixedly installed on the rotating shaft (43). One end of the torsion spring (44) away from the rotating shaft (43) is installed in the rotating groove of the cooling box (4). Discontinuously arranged tooth blocks (45) are fixedly installed on the lifting rod (13). A gear (46) is fixedly installed on the rotating shaft (43). The gear (46) is located outside the torsion spring (44). Through the engagement of the tooth block (45) and the gear (46), when the lifting rod (13) descends, the diversion pipe (41) will be in a swinging state, so that the cooling water sprayed by the spray head (42) is evenly sprayed on the plastic strip.

4. A preparation method, based on a regenerated plastic particle preparation device according to any one of claims 1-3, characterized in that, It includes the following steps: S1. Open the door of the preparation box (1), then put the plastic raw materials into the box body. The plastic raw materials in the preparation box (1) can be melted by the heating of the heating rod (3). Then open the valve in the through groove and close the door of the preparation box (1). Then, the hydraulic cylinder (9) drives the extrusion plate to move downward by using the U-shaped frame (10), and the melted plastic raw materials in the box body can be extruded onto the porous plate (5) to form plastic strips through the porous plate (5). S2. The extruded plastic strips will directly fall into the cooling box (4). The cooling water in the cooling box (4) is introduced into the diversion pipe (41) through the water pump (38), the shunt pipe (39) and the telescopic hose (40), and is sprayed on the plastic strips through the spray head (42) on the diversion pipe (41). When the U-shaped frame (10) descends a certain height, it will press down the lifting rod (13). The discontinuous tooth blocks (45) on the lifting rod (13) are engaged with the gear (46) on the conduit (20), and the diversion pipe (41) is in a swinging state by using the torsion of the torsion spring (44), so that the cooling water sprayed by the spray head (42) is evenly sprayed on the plastic strips. S3. The cooled plastic strips are discharged through the discharge holes in the cooling box (4), and then are cut into plastic particles by the cutting mechanism (6) to the plastic sleeve. The cut plastic particles will directly fall into the collection box (7). The heat of the cold water in the cooling box (4) is discharged into the installation groove by using the heat exchange mechanism (21). When the lifting rod (13) descends, the screw rod (15) will be driven to descend synchronously. The screw rod (15) will fall into the sleeve (17). The sleeve (17) will rotate on the fixed plate (14) through the rotating block (16). The positioning rotation of the sleeve (17) will drive the fan blades (18) to rotate. The wind generated by the fan blades (18) will discharge the heat dissipated by the heat dissipation fins into the collection box (7) through the concentrating block (19) and the conduit (20), so as to air-dry the plastic particles in the collection box (7). S4. While the pressing rod (12) descends, it will also drive the piston on the push rod (26) to move within the pneumatic cylinder (25). The gas discharged from the pneumatic cylinder (25) will enter the installation cylinder (30) through the gas transmission pipe (27). The installation cylinder (30) will squeeze the lifting plate (32) to descend by filling with gas. When the pressure in the installation cylinder (30) reaches a certain value, it will be discharged through the exhaust pipe (34). And the lifting plate (32) drives the ejector rod (33) on the lifting plate (32) to eject through the elastic performance of the spring. The ejector rod (33) will impact on the mounting bracket (28) and generate vibrations. When the mounting bracket (28) vibrates, the water droplets on the surface of the plastic particles on the grid plate (29) will directly fall to the inner bottom of the collection box (7). S5. When the ejector rod (33) impacts the mounting bracket (28), it will produce displacement. Through the threaded fit between the threaded rod (35) and the cross plate (36), the threaded rod (35) can be rotated. When the threaded rod (35) rotates, it will drive the stirring blade (37) on the threaded rod (35) to rotate. The stirring blade (37) can be used to stir the plastic particles in the collection box (7), so that the plastic particles in the collection box (7) are evenly contacted with the hot air, thereby improving the drying effect of the plastic particles. Finally, open the door of the collection box (7), and then take out the dried plastic particles.

Images