A hot air convection type plastic particle uniform dryer

Abstract

The utility model relates to the technical field of plastic drying machine, concretely relates to a hot -blast convection formula's plastic particle uniform drying machine, including drying jar, the inside rotation of drying jar is provided with the inner jar for depositing plastic particle, the top rotation of inner jar is provided with the feeding hopper for feeding, the outer wall of drying jar is provided with the hot -blast machine for drying to plastic particle, the output of hot -blast machine is linked with the air inlet pipe, and the hot gas of output is transported to the inside of hollow column through the air pipe, and the hot gas that enters the inside of hollow column will be discharged through the air outlet, thereby drying treatment is carried out to the plastic particle that pushes and pushes in the middle position of inner jar, and simultaneously these hot gas also can move to the air pipe of two sides, and the plastic particle that is far away from the middle position in the inside of inner jar can be dried treatment by the nozzle of the air pipe outside spouts again, and the plastic particle in the inside of inner jar can be dried comprehensively by hollow column and the air pipe outside.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, specifically to a hot air convection type uniform dryer for plastic granules. Background Technology

[0002] Plastic granules refer to granular plastics, generally classified into over 200 types, with thousands of subcategories. Common types of plastic granules include general-purpose plastics, engineering plastics, and specialty plastics. Recycled plastic granules have a wide range of applications. In daily life, recycled granules can be used to manufacture various plastic bags, buckets, basins, toys, furniture, stationery, and other household items and plastic products. During the plastic processing and production process, the molded plastic granules need to be dried before subsequent processing steps can be carried out.

[0003] Chinese Patent Publication No. CN214687404U discloses a plastic granule dryer, comprising a circular box body. Support legs are fixedly installed on both sides of the bottom of the circular box body. A feed pipe is inserted through the top of the circular box body, and a drying chamber is fixedly connected to the bottom end of the feed pipe. A discharge pipe is inserted through the bottom of the drying chamber. A second gear is fixedly sleeved on the outer wall of the feed pipe. This plastic granule dryer utilizes the coordinated use of the circular box body, vertical box, input pipe, heating chamber, heater, air inlet pipe, fan, first gear, motor, feed pipe, second gear, pressure relief pipe, pressure relief electronic valve, pressure gauge, drying chamber, discharge pipe, slide rail, limit block, and limit rod. Inside the drying chamber, the plastic granules are subjected to centrifugal force, causing moisture inside the granules to diffuse to the surface. Combined with the drying treatment by hot air, this significantly increases the area of ​​the granules that needs to be dried.

[0004] The aforementioned device generates centrifugal force by rotating the drying chamber, causing the plastic particles to adhere tightly to the inner wall of the drying chamber. Then, an external heater is used to dry the plastic particles. However, when drying a large number of plastic particles, these plastic particles will accumulate in one place, while the plastic particles in the middle cannot be effectively dried, resulting in uneven drying of the plastic particles. Utility Model Content

[0005] To address the aforementioned issues, a hot air convection type uniform plastic granule dryer is provided. A hot air blower transports hot air through air pipes to the interior of a hollow column. The hot air entering the hollow column is discharged through air outlets, thus drying the plastic granules pushed into the center of the inner tank. Simultaneously, this hot air also moves towards the air pipes on both sides and is sprayed out through nozzles on the outside of the air pipes to dry the plastic granules further away from the center inside the inner tank. The hollow column and external air pipes allow for comprehensive drying of the plastic granules inside the inner tank.

[0006] To address the problems of existing technologies, this utility model provides a hot air convection type uniform dryer for plastic granules, including a drying tank. An inner tank for storing plastic granules is rotatably arranged inside the drying tank. A feed hopper for feeding is rotatably arranged on the top of the inner tank. A cover plate to prevent heat loss is movably arranged on the top of the feed hopper. A hot air blower for drying the plastic granules is arranged on the outer wall of the drying tank. An air inlet pipe is connected to the output end of the hot air blower, and a hollow column is connected to the other end of the air inlet pipe. The hollow column is located inside the inner tank, and multiple air outlets are opened inside the hollow column for venting air. Multiple crossbars for stirring the plastic granules are arranged on the outside of the hollow column. A valve for convenient discharge is arranged at the bottom of the inner tank, and multiple exhaust ports for discharging hot air are opened on the bottom wall of the drying tank.

[0007] Preferably, the inner walls on both sides of the drying tank are provided with gas supply pipes, and the opposite ends of the two gas supply pipes are connected to the interior of the hollow column. The opposite sides of the two gas supply pipes are connected to multiple nozzles for gas outlet.

[0008] Preferably, a toothed disc is rotatably arranged inside the drying tank, and multiple support rods are arranged on the top of the toothed disc. The top of the support rods is connected to the bottom of the inner tank. A drive motor is arranged inside the drying tank, and the output shaft of the drive motor is provided with gears that mesh with the toothed disc.

[0009] Preferably, the bottom of the toothed disc is provided with a plurality of ball bearings to facilitate the rotation of the toothed disc and the inner tank, and the inside of the drying tank is provided with an annular groove for the ball bearings to move.

[0010] The advantages of this invention compared to the prior art are as follows: the hot air produced by the hot air blower is transported to the interior of the hollow column through the air supply pipe. The hot air entering the hollow column will be discharged through the air outlet, thereby drying the plastic particles pushed in the middle of the inner tank. At the same time, this hot air will also move to the air supply pipes on both sides and be sprayed out by the nozzles on the outside of the air supply pipes to dry the plastic particles in the inner tank that are far from the middle. The hollow column and the external air supply pipes can be used to dry the plastic particles inside the inner tank thoroughly.

[0011] The drive motor rotates the gears, and the gear disc connected to the gears also rotates, further rotating the inner tank on top of the gear disc. The plastic granules inside the inner tank also rotate, but the hollow column does not rotate due to the air supply pipe and air inlet pipe. Therefore, when the plastic granules inside the inner tank rotate, they will come into contact with the crossbar outside the hollow column, causing the plastic granules to be agitated inside the inner tank. Together with the hollow column and the external air supply pipe, the plastic granules can be dried evenly. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a hot air convection type uniform dryer for plastic granules. Figure 2 This is a schematic diagram of the internal structure of the drying tank in a hot air convection type uniform dryer for plastic granules. Figure 3 This is a schematic diagram of the inner tank in a hot air convection type uniform dryer for plastic granules. Figure 4 This is a schematic diagram of the feed hopper in a hot air convection type uniform dryer for plastic granules. Figure 5 This is a schematic diagram of the hollow column structure in a hot air convection type uniform dryer for plastic granules. Figure 6 This is a schematic diagram of the structure of the toothed disc and gears in a hot air convection type uniform dryer for plastic granules.

[0013] The following are the labels in the diagram: 1. Drying tank; 2. Hot air blower; 3. Feed hopper; 4. Air inlet pipe; 5. Air delivery pipe; 6. Nozzle; 7. Inner tank; 8. Gear disc; 9. Hollow column; 10. Crossbar; 11. Air outlet; 12. Support rod; 13. Drive motor; 14. Gear; 15. Ball bearing; 16. Annular groove; 17. Cover plate; 18. Exhaust port. Detailed Implementation

[0014] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0015] like Figures 1 to 6 As shown, this utility model provides: a hot air convection type uniform plastic granule dryer, including a drying tank 1, an inner tank 7 for storing plastic granules is rotatably arranged inside the drying tank 1, a feeding hopper 3 for feeding is rotatably arranged on the top of the inner tank 7, a valve for easy discharge is arranged at the bottom of the inner tank, a hot air blower 2 for drying plastic granules is arranged on the outer wall of the drying tank 1, an air inlet pipe 4 is connected to the output end of the hot air blower 2, and a hollow column 9 is connected to the other end of the air inlet pipe 4. The hollow column 9 is located inside the inner tank 7, and multiple air outlets 11 are opened inside the hollow column 9 for air discharge. Multiple crossbars 10 for stirring plastic granules are arranged on the outside of the hollow column 9, a valve for easy discharge is arranged at the bottom of the inner tank 7, and multiple exhaust ports 18 for discharging hot air are opened on the bottom wall of the drying tank 1.

[0016] When plastic granules need to be dried, open the cover plate 17 on the top of the feed hopper 3, then pour the plastic granules into the feed hopper 3, gradually pushing them into the inner tank 7. Then close the cover plate 17, and finally start the hot air blower 2 and drive motor 13. When the hot air blower 2 is working, it will transport the produced hot air to the inside of the hollow column 9 through the air pipe 5. The hot air entering the hollow column 9 will be discharged through the air outlet 11, thereby drying the plastic granules pushed in the middle of the inner tank 7. This prevents the plastic granules in the middle of the inner tank 7 from not being able to dry. Finally, the hot air inside the drying tank 1 can be discharged through the exhaust port 18 on the bottom wall of the inner tank 7, ensuring the normal flow of air inside the drying tank 1.

[0017] like Figure 3 As shown, both sides of the inner wall of the drying tank 1 are provided with gas supply pipes 5. The opposite ends of the two gas supply pipes 5 are connected to the interior of the hollow column 9. The opposite sides of the two gas supply pipes 5 are connected to multiple nozzles 6 for gas outlet.

[0018] The hot air inside the hollow intake column 9 will also move to the air supply pipes 5 on both sides, and then be sprayed out by the nozzles 6 outside the air supply pipes 5 to dry the plastic particles in the inner tank 7 that are far from the center. The hollow column 9 and the external air supply pipes 5 can be used to dry the plastic particles inside the inner tank 7 thoroughly.

[0019] like Figure 3 As shown, a toothed disc 8 is rotatably arranged inside the drying tank 1. Multiple support rods 12 are arranged on the top of the toothed disc 8. The top of the support rods 12 are connected to the bottom of the inner tank 7. A drive motor 13 is arranged inside the drying tank 1. The output shaft of the drive motor 13 is provided with a gear 14 that meshes with the toothed disc 8.

[0020] The drive motor 13 drives the gear 14 to rotate, and the gear disk 8, which meshes with the gear 14, also rotates. This further drives the inner tank 7 on top of the gear disk 8 to rotate, and the plastic granules inside the inner tank 7 also rotate. However, the hollow column 9 does not rotate under the action of the air supply pipe 5 and the air inlet pipe 4. Therefore, when the plastic granules inside the inner tank 7 rotate, they will come into contact with the crossbar 10 outside the hollow column 9, causing the plastic granules to be agitated inside the inner tank 7. With the help of the hollow column 9 and the external air supply pipe 5, the plastic granules can be dried evenly.

[0021] like Figure 3 As shown, the bottom of the toothed disc 8 is provided with multiple balls 15 to facilitate the rotation of the toothed disc 8 and the inner tank 7, and the inside of the drying tank 1 is provided with an annular groove 16 for the balls 15 to move.

[0022] To ensure smoother rotation of the gear disc 8 and the inner tank 7, multiple ball bearings 15 are installed at the bottom of the gear disc 8. These ball bearings 15 make the rotation of the gear disc 8 and the inner tank 7 more stable.

[0023] Working principle: When drying plastic granules is required, first open the cover plate 17 on top of the feed hopper 3, then pour the plastic granules into the feed hopper 3, gradually pushing them into the inner tank 7. Then close the cover plate 17, and finally start the hot air blower 2 and drive motor 13. When the hot air blower 2 is working, it will transport the generated hot air through the air pipe 5 to the interior of the hollow column 9. The hot air entering the hollow column 9 will be discharged through the air outlet 11, thus drying the plastic granules pushed into the middle of the inner tank 7. Simultaneously, this hot air will also flow towards the air pipes on both sides. 5. The air supply pipe 5 moves, and then the nozzle 6 outside the air supply pipe 5 sprays out to dry the plastic particles in the inner tank 7 that are far from the center. The hollow column 9 and the external air supply pipe 5 can thoroughly dry the plastic particles inside the inner tank 7. When the drive motor 13 is working, it drives the gear 14 to rotate. At the same time, the gear disk 8, which meshes with the gear 14, also rotates, further driving the inner tank 7 on top of the gear disk 8 to rotate. The plastic particles inside the inner tank 7 will also rotate. However, the hollow column 9 will not rotate under the action of the air supply pipe 5 and the air inlet pipe 4, so the plastic particles inside the inner tank 7 will not rotate. As the granules rotate, they come into contact with the crossbar 10 on the outside of the hollow column 9, causing the plastic granules to agitate inside the inner tank 7. This, combined with the hollow column 9 and the external air supply pipe 5, allows for even drying of the plastic granules. To ensure smoother rotation of the toothed disc 8 and the inner tank 7, multiple ball bearings 15 are installed at the bottom of the toothed disc 8. These ball bearings 15 enhance stability during rotation. Furthermore, to prevent granules from entering and clogging the air outlet 11 of the hollow column 9, the diameter of the air outlet 11 can be designed according to the size of the granules, ensuring proper airflow. The diameter of the vent 11 should be smaller than the diameter of the particles, and there should be enough vents 11 to ensure normal gas discharge without affecting the discharge of hot air. At the same time, the inner tank 7 is made of metal, which has strong thermal conductivity and can effectively transfer heat to the inside of the inner tube 7. With the help of the hot air blower 2, the inner tank 7 can be continuously heated to ensure sufficient heat to heat the material inside the inner tank 7. Finally, the hot air inside the drying tank 1 can be discharged through the exhaust port 18 on the bottom wall of the inner tank 7 to ensure normal airflow inside the drying tank 1.

[0024] The above embodiments merely illustrate the implementation of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model application, and these all fall within the protection scope of this utility model application. Therefore, the protection scope of this utility model application should be determined by the appended claims.

[0025] In this utility model application, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model application according to the specific circumstances.

Claims

1. A hot air convection type uniform dryer for plastic granules, characterized in that, The equipment includes a drying tank (1), an inner tank (7) for storing plastic granules is rotatably arranged inside the drying tank (1), a feeding hopper (3) for feeding is rotatably arranged on the top of the inner tank (7), a cover plate (17) for preventing heat loss is movably arranged on the top of the feeding hopper (3), a hot air blower (2) for drying plastic granules is arranged on the outer wall of the drying tank (1), an air inlet pipe (4) is connected to the output end of the hot air blower (2), and a hollow column (9) is connected to the other end of the air inlet pipe (4). The hollow column (9) is located inside the inner tank (7), and multiple air outlets (11) for venting are opened inside the hollow column (9). Multiple crossbars (10) for stirring plastic granules are arranged on the outside of the hollow column (9). A valve for easy discharge is arranged at the bottom of the inner tank (7), and multiple exhaust ports (18) for venting hot air are opened on the bottom wall of the drying tank (1).

2. The hot air convection type uniform dryer for plastic granules according to claim 1, characterized in that, The drying tank (1) is provided with gas supply pipes (5) on both sides of the inner wall. The opposite ends of the two gas supply pipes (5) are connected to the interior of the hollow column (9). The opposite sides of the two gas supply pipes (5) are connected to multiple nozzles (6) for gas discharge.

3. A hot air convection type uniform dryer for plastic granules according to claim 1, characterized in that, The drying tank (1) is equipped with a toothed disc (8) that rotates inside. The top of the toothed disc (8) is provided with multiple support rods (12). The top of the support rods (12) is connected to the bottom of the inner tank (7). The drying tank (1) is equipped with a drive motor (13). The output shaft of the drive motor (13) is provided with a gear (14) that meshes with the toothed disc (8).

4. A hot air convection type uniform dryer for plastic granules according to claim 3, characterized in that, The bottom of the toothed disc (8) is provided with multiple balls (15) to facilitate the rotation of the toothed disc (8) and the inner tank (7), and the inside of the drying tank (1) is provided with an annular groove (16) for the balls (15) to move.

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