Energy-saving hot air circulating plastic melt granulation system

Abstract

This utility model relates to the technical field of plastic melting and granulation systems, and discloses an energy-saving hot air circulation plastic melting and granulation system. It solves the problem that existing energy-saving hot air circulation plastic melting and granulation systems, due to the viscosity of liquid plastic, are prone to clogging of the feed inlet during feeding, thus affecting the normal operation of the system. The system includes an extrusion granulator, with support frames fixedly installed on both sides of the bottom of the extrusion granulator. A fixed base is fixedly installed on the top of the extrusion granulator, with a feed inlet on one side inside the fixed base. A melting tank is fixedly installed on the top of the fixed base via a feed pipe. A protective shell is fixedly installed on the top of the melting tank, and an air pipe is fixedly installed between the protective shell and the melting tank. A feed valve is fixedly installed on the upper part of the surface of the melting tank. This energy-saving hot air circulation plastic melting and granulation system will not cause clogging of the feed inlet during use, thus ensuring the normal operation of the system.

Description

Technical Field

[0001] This utility model belongs to the technical field of plastic melt granulation system, specifically an energy-saving hot air circulation plastic melt granulation system. Background Technology

[0002] The energy-saving hot air circulating plastic melting and granulation system is an environmentally friendly equipment that uses hot air circulation heating technology to directly melt and extrude waste plastics. This system ensures uniform heating and melting of the plastic through hot air circulation, eliminating the need for crushing, washing, and drying in traditional processes, thus reducing process steps and energy consumption, while also avoiding secondary pollution. Its core components include a melting chamber, a hot air circulation device, and a screw extruder, featuring a compact structure, high energy utilization, and high granulation efficiency. This system is widely used in the field of waste plastic recycling, processing various types of waste plastics such as mineral water bottles and production scraps, converting them into high-quality recycled plastic granules for use in plastic product manufacturing or other industrial fields. This achieves the recycling of plastic resources and is of great significance for reducing environmental pollution and conserving resources.

[0003] In the operation of existing energy-saving hot air circulating plastic melting and granulation systems, the viscosity of liquid plastics can easily cause blockage of the feed inlet, thus affecting the normal operation of the system. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an energy-saving hot air circulation plastic melting and granulation system, which effectively solves the problem that the liquid plastic has a certain viscosity and is prone to blockage of the feed port during the feeding process, thus affecting the normal operation of the system.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving hot air circulating plastic melting and granulation system, including an extrusion granulator. Support frames are fixedly installed on both sides of the bottom of the extrusion granulator. A fixed base is fixedly installed on the top of the extrusion granulator. A discharge port is opened on one side inside the fixed base. A melting tank is fixedly installed on the top of the fixed base via a discharge pipe. A protective shell is fixedly installed on the top of the melting tank. An air pipe is fixedly installed between the protective shell and the melting tank. A feed valve is fixedly installed on the upper part of the surface of the melting tank. An impeller is installed inside the protective shell. A stirring rod is installed inside the melting tank. A screw rod is installed inside the discharge pipe. A mounting frame is fixedly installed on the rear side of the extrusion granulator. A servo motor is fixedly installed on the lower part of one side of the mounting frame. A protective net is fixedly installed at the top opening of the extrusion granulator. An electric heating plate is fixedly installed on the upper part of the protective net. A transmission component is provided at the output end of the servo motor. The transmission component is connected to the impeller and the screw rod. When the servo motor operates, it drives the impeller to rotate and blow air through the transmission component, and causes the screw rod to drive the stirring rod to rotate, thereby achieving agitation and discharge of the liquid plastic.

[0006] Preferably, the transmission assembly includes a lower sprocket fixedly installed at the output end of the servo motor. A lower shaft is fixedly installed on one side of the lower sprocket. One end of the lower shaft extends to the middle of the interior of the fixed seat and is fixedly installed with a driving bevel gear. The surface of the lower shaft is rotatably connected to the fixed seat through a lower bushing. A driven bevel gear is meshed with the upper part of the surface of the driving bevel gear. The bottom of the driven bevel gear is rotatably connected to the inner bottom of the fixed seat, and the top of the driven bevel gear is fixedly connected to the bottom end of the screw rod. The lower end of the surface of the screw rod is rotatably connected to the bottom of the feed tube through a bearing.

[0007] Preferably, an upper sprocket is provided above the lower sprocket. One side of the upper sprocket is rotatably connected to the mounting bracket. A chain meshes between the upper sprocket and the lower sprocket. An upper shaft is fixedly installed on the other side of the upper sprocket. One end of the upper shaft extends into the interior of the protective shell and is fixedly installed with a first bevel gear. The surface of the upper shaft is rotatably connected to the inner bottom of the protective shell through two upper shaft sleeves. A second bevel gear is meshed with the lower part of the surface of the first bevel gear. A rotating shaft is fixedly installed at the bottom of the second bevel gear. A rotating sleeve is rotatably installed on the surface of the rotating shaft. One side of the rotating sleeve is fixedly connected to the inner wall of the protective shell through a support arm. The bottom of the rotating shaft is fixedly connected to an impeller.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, the operator puts plastic into the melting tank through the feed valve, and then starts the servo motor to run in the forward direction. When the servo motor runs in the forward direction, it drives the lower sprocket to rotate. When the lower sprocket rotates, it drives the upper sprocket to rotate through the chain. When the upper sprocket rotates, it drives the first bevel gear to rotate through the upper shaft. When the first bevel gear rotates, it drives the rotating shaft to rotate through the second bevel gear. When the rotating shaft rotates, it drives the impeller to rotate and blow air. The blown air is heated by the electric heating plate and then enters the melting tank to melt the plastic. Then the impeller will draw the heat from the inside of the melting tank back into the protective shell through the air pipe and blow it out. The airflow is reheated by the electric heating plate and then sent into the melting tank, thereby realizing hot air circulation and achieving energy saving.

[0009] While the lower sprocket rotates, it drives the driving bevel gear to rotate via the lower shaft. The driving bevel gear, in turn, drives the auger and agitator to rotate via the driven bevel gear. This agitator stirs the material, preventing the lower part of the liquid plastic from solidifying. When the servo motor rotates forward, it drives the auger to convey the material upwards, preventing material from flowing out and thus quickly and effectively melting the plastic. After melting, the operator controls the servo motor to rotate in reverse, causing the auger to rotate in the opposite direction and convey the material downwards. Simultaneously, it drives the agitator to stir the material, allowing it to flow more smoothly into the feed pipe and be transported to the extrusion granulator for granulation, preventing blockages. This ensures that the energy-saving hot air circulating plastic melting and granulation system will not experience blockages at the feed port during use, guaranteeing the normal operation of the system. Attached Figure Description

[0010] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0011] In the attached diagram:

[0012] Figure 1 This is a schematic diagram of the structure of the energy-saving hot air circulating plastic melt granulation system of this utility model. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of the energy-saving hot air circulating plastic melt granulation system of this utility model. Figure 2 ;

[0014] Figure 3 This is a partial structural diagram of the energy-saving hot air circulating plastic melting and granulation system of this utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of the melting tank of this utility model. Figure 1 ;

[0016] Figure 5 This is a schematic diagram of the internal structure of the melting tank of this utility model. Figure 2 ;

[0017] Figure 6 This utility model Figure 5 A magnified schematic diagram of the central part of the structure;

[0018] Figure 7 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0019] In the diagram: 1. Extrusion granulator; 2. Support frame; 3. Fixed base; 4. Feed pipe; 5. Melting tank; 6. Protective shell; 7. Air pipe; 8. Feed valve; 9. Impeller; 10. Stirring rod; 11. Mounting frame; 12. Protective net; 13. Heating plate; 14. Lower shaft; 15. Lower bushing; 16. Driving bevel gear; 17. Driven bevel gear; 18. Bearing; 19. Upper sprocket; 20. Chain; 21. Upper shaft; 22. Upper bushing; 23. First bevel gear; 24. Second bevel gear; 25. Rotating shaft; 26. Rotating sleeve; 27. Support arm; 28. Lower sprocket; 29. ​​Screw rod; 30. Servo motor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1 to 7The present invention includes an extrusion granulator 1 for granulating plastics. Support frames 2 are fixedly installed on both sides of the bottom of the extrusion granulator 1 to ensure the overall stability of the equipment. A fixed base 3 is fixedly installed on the top of the extrusion granulator 1. A feeding port is opened on one side inside the fixed base 3. A melting tank 5 is fixedly installed on the top of the fixed base 3 through a feeding pipe 4. The feeding port allows the feeding pipe 4 to communicate with the interior of the extrusion granulator 1. A protective shell 6 is fixedly installed on the top of the melting tank 5. An air pipe 7 for transmitting hot air is fixedly installed between the protective shell 6 and the melting tank 5. A feed valve 8 is fixedly installed on the upper part of the surface of the melting tank 5. Opening the feed valve 8 allows material to be fed into the interior of the melting tank 5. A rotating impeller 9 for blowing air is provided inside the protective shell 6. The interior of the melting tank 5 is equipped with... The extruder 1 has a stirring rod 10, which can agitate the liquid plastic and prevent it from solidifying. The feed pipe 4 is equipped with a screw rod 29 for conveying materials. A mounting frame 11 is fixedly installed on the rear side of the extruder 1. A servo motor 30 for outputting power is fixedly installed on the lower part of one side of the mounting frame 11. A protective net 12 is fixedly installed at the top opening of the extruder 1. An electric heating plate 13 is fixedly installed on the upper part of the protective net 12. The air blown out by the impeller 9 can be heated into hot air by the electric heating plate 13. The output end of the servo motor 30 is equipped with a transmission component. The transmission component is connected to the impeller 9 and the screw rod 29. When the servo motor 30 is running, it drives the impeller 9 to rotate and blow air through the transmission component, and causes the screw rod 29 to drive the stirring rod 10 to rotate, so as to agitate the liquid plastic and discharge it.

[0022] In use, the operator puts plastic into the melting tank 5 through the feed valve 8, and then starts the servo motor 30 to run in the forward direction. When the servo motor 30 runs in the forward direction, it drives the transmission component to run in the forward direction. When the transmission component runs, it drives the impeller 9 to rotate and blow air. The blown air is heated by the electric heating plate 13 and then enters the melting tank 5 to melt the plastic. Then the impeller 9 will draw the heat from the inside of the melting tank 5 back into the protective shell 6 through the air pipe 7 and blow it out. The airflow is reheated by the electric heating plate 13 and then sent into the melting tank 5, thereby realizing hot air circulation and achieving energy saving.

[0023] While the transmission component is running in the forward direction, it will also drive the screw rod 29 and the stirring rod 10 to rotate, so that the stirring rod 10 stirs the material and prevents the bottom of the liquid plastic from solidifying. When the servo motor 30 is running in the forward direction, it will drive the screw rod 29 to convey the material upward, so as not to let the material flow out, and thus quickly and effectively melt the plastic.

[0024] After melting is complete, the operator controls the servo motor 30 to rotate in reverse, thereby causing the screw 29 to rotate in reverse and convey the material downward. At the same time, it drives the stirring rod 10 to stir the material, so that the material can enter the feed pipe 4 more smoothly when it is stirred, and can be smoothly conveyed to the extrusion granulator 1 for granulation processing, avoiding material blockage. This ensures that the feed port of this energy-saving hot air circulating plastic melting and granulation system will not be blocked during use, thus ensuring the normal operation of the system.

[0025] The transmission assembly includes a lower sprocket 28 fixedly mounted on the output end of the servo motor 30. A lower shaft 14 is fixedly mounted on one side of the lower sprocket 28. One end of the lower shaft 14 extends to the middle of the interior of the fixed base 3 and is coaxially fixedly mounted with a drive bevel gear 16. The surface of the lower shaft 14 is rotatably connected to the fixed base 3 through a lower bushing 15. The lower bushing 15 improves the rotational stability of the lower shaft 14. A driven bevel gear 17 is meshed on the upper part of the surface of the drive bevel gear 16. The bottom of the driven bevel gear 17 is rotatably connected to the inner bottom of the fixed base 3, and the top of the driven bevel gear 17 is coaxially fixedly connected to the bottom end of the screw rod 29. The lower end of the surface of the screw rod 29 is rotatably connected to the bottom of the feed tube 4 through a bearing 18. The bearing 18 ensures the rotational stability of the screw rod 29.

[0026] When the servo motor 30 rotates in the forward direction, it drives the lower sprocket 28 to rotate. When the lower sprocket 28 rotates, it drives the active bevel gear 16 to rotate through the lower shaft 14. When the active bevel gear 16 rotates, it drives the spiral rod 29 and the stirring rod 10 to rotate through the driven bevel gear 17. This causes the stirring rod 10 to stir the material, preventing the lower part of the liquid plastic from solidifying. When the servo motor 30 rotates in the forward direction, it drives the spiral rod 29 to convey the material upward, thus preventing the material from flowing out and quickly and effectively melting the plastic.

[0027] When the servo motor 30 rotates in reverse, it will drive the screw rod 29 to rotate in reverse and convey the material downward. At the same time, it will drive the stirring rod 10 to stir the material, so that the material can enter the feed pipe 4 more smoothly when it is stirred, and the material can be smoothly conveyed to the extrusion granulator 1 for granulation processing, avoiding material blockage.

[0028] An upper sprocket 19 is provided above the lower sprocket 28. One side of the upper sprocket 19 is rotatably connected to the mounting bracket 11. A chain 20 is meshed between the upper sprocket 19 and the lower sprocket 28. The chain 20 can transmit the power of the lower sprocket 28 to the upper sprocket 19. An upper shaft 21 is fixedly installed on the other side of the upper sprocket 19. One end of the upper shaft 21 extends into the interior of the protective shell 6 and a first bevel gear 23 is fixedly installed on the same axis. The surface of the upper shaft 21 is rotatably connected to the inner bottom of the protective shell 6 through two upper shaft sleeves 22. The two upper shaft sleeves 22 ensure the rotational stability of the upper shaft 21. A second bevel gear 24 is meshed with the lower part of the surface of the first bevel gear 23.

[0029] The bottom of the second bevel gear 24 is fixedly mounted with a rotating shaft 25. A rotating sleeve 26 is rotatably mounted on the surface of the rotating shaft 25. The rotating sleeve 26 is used to ensure the stability of the rotation of the rotating shaft 25. One side of the rotating sleeve 26 is fixedly connected to the inner wall of the protective shell 6 through a support arm 27, and the bottom of the rotating shaft 25 is fixedly connected to the impeller 9.

[0030] When the servo motor 30 rotates in the forward direction, it drives the lower sprocket 28 to rotate. When the lower sprocket 28 rotates, it drives the upper sprocket 19 to rotate through the chain 20. When the upper sprocket 19 rotates, it drives the first bevel gear 23 to rotate through the upper shaft 21. When the first bevel gear 23 rotates, it drives the rotating shaft 25 to rotate through the second bevel gear 24. When the rotating shaft 25 rotates, it drives the impeller 9 to rotate and blow air.

Claims

1. Energy-saving hot air circulating plastic melting and granulating system, comprising an extruding and granulating machine (1), characterized in that: The extrusion granulator (1) has support frames (2) fixedly installed on both sides of its bottom. A fixed seat (3) is fixedly installed on the top of the extrusion granulator (1). A discharge port is opened on one side inside the fixed seat (3). A melting tank (5) is fixedly installed on the top of the fixed seat (3) through a discharge pipe (4). A protective shell (6) is fixedly installed on the top of the melting tank (5). An air pipe (7) is fixedly installed between the protective shell (6) and the melting tank (5). A feed valve (8) is fixedly installed on the upper part of the surface of the melting tank (5). An impeller (9) is provided inside the protective shell (6). A stirring rod (10) is provided inside the melting tank (5). A screw is provided inside the discharge pipe (4). The screw rod (29) is fixedly mounted on the rear side of the extrusion granulator (1) with a mounting frame (11). A servo motor (30) is fixedly mounted on the lower part of one side of the mounting frame (11). A protective net (12) is fixedly mounted at the top opening of the extrusion granulator (1). An electric heating plate (13) is fixedly mounted on the upper part of the protective net (12). The output end of the servo motor (30) is provided with a transmission component. The transmission component is connected to the impeller (9) and the screw rod (29) for transmission. When the servo motor (30) is running, it drives the impeller (9) to rotate and blow air through the transmission component, and causes the screw rod (29) to drive the stirring rod (10) to rotate, so as to realize the stirring and feeding of liquid plastic.

2. The energy-saving hot air circulation plastic melting and granulating system according to claim 1, characterized in that: The transmission assembly includes a lower sprocket (28) fixedly installed at the output end of the servo motor (30). A lower shaft (14) is fixedly installed on one side of the lower sprocket (28). One end of the lower shaft (14) extends to the middle of the interior of the fixed seat (3) and is fixedly installed with a driving bevel gear (16). The surface of the lower shaft (14) is rotatably connected to the fixed seat (3) through a lower bushing (15). The upper part of the surface of the driving bevel gear (16) is meshed with a driven bevel gear (17). The bottom of the driven bevel gear (17) is rotatably connected to the inner bottom of the fixed seat (3), and the top of the driven bevel gear (17) is fixedly connected to the bottom end of the screw rod (29). The lower end of the surface of the screw rod (29) is rotatably connected to the bottom of the feed tube (4) through a bearing (18).

3. The energy-saving hot air circulation plastic melting granulation system according to claim 2, characterized in that: An upper sprocket (19) is provided above the lower sprocket (28). One side of the upper sprocket (19) is rotatably connected to the mounting bracket (11). A chain (20) is meshed between the upper sprocket (19) and the lower sprocket (28). An upper shaft (21) is fixedly installed on the other side of the upper sprocket (19). One end of the upper shaft (21) extends into the interior of the protective shell (6) and is fixedly installed with a first bevel gear (23). The surface of the upper shaft (21) is rotatably connected to the inner bottom of the protective shell (6) through two upper shaft sleeves (22). A second bevel gear (24) is meshed with the lower part of the surface of the first bevel gear (23).

4. The energy-saving hot air circulation plastic melting granulation system according to claim 3, characterized in that: The bottom of the second bevel gear (24) is fixedly mounted with a rotating shaft (25), and a rotating sleeve (26) is rotatably mounted on the surface of the rotating shaft (25). One side of the rotating sleeve (26) is fixedly connected to the inner wall of the protective shell (6) through a support arm (27), and the bottom of the rotating shaft (25) is fixedly connected to the impeller (9).

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