Recycled plastic particle drying device

Abstract

The utility model discloses a regenerated plastic particle drying device, which relates to the technical field of plastic particle processing and comprises a bottom plate, a mixing drying mechanism and a conveying drying mechanism, a drying box is fixedly connected to the center of the upper end face of the bottom plate, and the mixing drying mechanism is arranged in the drying box. Limiting plates are fixedly connected to the left end and the right end of the upper end face of the bottom plate, a rotating rod is rotationally connected between the two limiting plates, a pretreatment tank is rotationally connected to the outer side wall of the rotating rod, a heating layer is arranged in the pretreatment tank, an electric heating wire is arranged in the heating layer, and a feeding port is formed in the upper end face of the pretreatment tank. Through the design of a plurality of groups of reciprocating mixing plates, regenerated plastic particles can be effectively and uniformly turned, each particle can be uniformly heated and dried, the temperature in the pretreatment tank can be quickly increased, the drying time is shortened, the treatment efficiency is improved, and impurities and water can be effectively removed through effective pretreatment.

Description

Technical Field

[0001] This utility model relates to the field of plastic pellet processing technology, specifically a device for drying recycled plastic pellets. Background Technology

[0002] Recycled pellets are short for recycled plastic pellets. Recycled plastic pellets belong to the category of plastic pellets. Recycled plastic is plastic produced by recycling used new materials or waste plastics through a screw press, and then cutting it into pellets through a pelletizer.

[0003] Recycled plastics are prone to absorbing moisture during recycling and processing. The presence of moisture can cause bubbles to form during the melting process, thus affecting the quality of the final product. Furthermore, dried plastic granules have better fluidity in the molten state. However, existing recycled plastic granule drying technologies use heating or blowing to dry the granules. Since there are many recycled plastic granules and they are all piled together, this can lead to insufficient drying. Moisture may still be present at the bottom and top of the plastic granules in the middle of the pile, which can affect the subsequent use of the plastic granules.

[0004] Therefore, those skilled in the art have provided a device for drying recycled plastic pellets to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a device for drying recycled plastic pellets to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A recycled plastic pellet drying device includes a base plate, a mixing and drying mechanism, and a conveying and drying mechanism. A drying box is fixedly connected to the center of the upper surface of the base plate. The mixing and drying mechanism is installed inside the drying box. Limiting plates are fixedly connected to both ends of the upper surface of the base plate. A rotating rod is rotatably connected between the two sets of limiting plates. A pretreatment tank is rotatably connected to the outer wall of the rotating rod. A heating layer is provided inside the pretreatment tank. An electric heating wire is installed inside the heating layer. A feed inlet is provided on the upper surface of the pretreatment tank. The mixing and drying mechanism is installed inside the pretreatment tank.

[0008] As a further embodiment of this utility model: a feeding box is connected through and fixedly connected to one side wall of the drying box, and a discharging box is connected through and fixedly connected to the other side wall of the drying box. A first spiral conveying rod is rotatably connected to the end of the drying box near the feeding box, and a second spiral conveying rod is rotatably connected to the end of the drying box near the discharging box.

[0009] As a further embodiment of this utility model: the end of the first spiral conveyor rod away from the feed box passes through the drying box and is fixedly connected to a drive gear; the end of the second spiral conveyor rod away from the discharge box passes through the drying box and is fixedly connected to a driven gear; the drive gear and the driven gear are rotatably connected and both are rotatably connected to the outer wall of the drying box; a servo motor is fixedly connected to one end of the upper surface of the bottom plate; a transmission rod is fixedly connected to the power output end of the servo motor and the transmission rod is fixedly connected to the drive gear.

[0010] As a further embodiment of this utility model: the upper surface of the drying box is covered with a cover plate, one end of the upper surface of the cover plate is connected to a hot air blower, the output end of the hot air blower is fixedly connected to a main air supply pipe, the bottom end of the main air supply pipe is fixedly connected to multiple sets of branch air supply pipes, and the output ends of the multiple sets of branch air supply pipes all penetrate the cover plate.

[0011] As a further embodiment of this utility model: the lower end face of the pretreatment tank is provided with a discharge port, the bottom end of the discharge port is fixedly connected to a feeding pipe, the other end of the feeding pipe is connected to the feeding box, multiple sets of reciprocating mixing plates are fixedly connected to the outer wall of the rotating rod and all the reciprocating mixing plates are located inside the pretreatment tank, a second pulley is fixedly connected to one end of the rotating rod, a first pulley is fixedly connected to the outer wall of the transmission rod, and a drive belt is movably engaged between the first pulley and the second pulley.

[0012] As a further improvement of this utility model, the driving gear meshes with the driven gear.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Equipped with a mixing and drying mechanism, the design of multiple reciprocating mixing plates effectively and evenly tumbles the recycled plastic granules, ensuring that each granule is heated and dried uniformly. The use of heating wires rapidly increases the temperature inside the pretreatment tank, shortens drying time, and improves processing efficiency. Effective pretreatment removes impurities and moisture. The conveying and drying mechanism, with its drive and driven gears powering the first and second spiral conveyor rods, evenly transports the recycled plastic granules, preventing granule accumulation and retention. The application of a hot air blower ensures full circulation of hot air, effectively improving drying efficiency and ensuring that the plastic granules reach the required dryness level in a short time. This helps reduce the moisture content of the recycled plastic, providing more suitable raw materials for subsequent processing steps (such as melt extrusion and injection molding). Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a device for drying recycled plastic pellets.

[0016] Figure 2 This is a schematic diagram of the drying chamber in a recycled plastic pellet drying device.

[0017] Figure 3 This is a frontal cross-sectional view of a recycled plastic pellet drying device.

[0018] Figure 4 This is a top view cross-sectional diagram of the drying chamber in a recycled plastic pellet drying device.

[0019] In the diagram: 1. Base plate; 2. Limiting plate; 3. Rotating rod; 4. Pretreatment tank; 5. Feed inlet; 6. Discharge outlet; 7. Feed pipe; 8. Drying box; 9. Feed box; 10. Discharge box; 11. Servo motor; 12. Transmission rod; 13. First pulley; 14. Drive belt; 15. Second pulley; 16. Reciprocating mixing plate; 17. Heating layer; 18. Drive gear; 19. Driven gear; 20. First spiral conveyor rod; 21. Second spiral conveyor rod; 22. Cover plate; 23. Hot air blower; 24. Main air supply pipe; 25. Branch air supply pipe. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Reference Figure 1-4 This embodiment provides a recycled plastic pellet drying device, including a base plate 1, a limiting plate 2, a rotating rod 3, a pretreatment tank 4, a feed inlet 5, a discharge outlet 6, a discharge pipe 7, a drying box 8, a feeding box 9, a discharge box 10, a servo motor 11, a transmission rod 12, a first pulley 13, a drive belt 14, a second pulley 15, a reciprocating mixing plate 16, a heating layer 17, a driving gear 18, a driven gear 19, a first spiral conveyor rod 20, a second spiral conveyor rod 21, a cover plate 22, and a hot air blower 23. The main air supply duct 24 and branch air supply ducts 25 are provided. A drying box 8 is fixedly connected to the center of the upper surface of the base plate 1. A mixing and drying mechanism is provided inside the drying box 8. Limiting plates 2 are fixedly connected to both ends of the upper surface of the base plate 1. A rotating rod 3 is rotatably connected between the two sets of limiting plates 2. A pretreatment tank 4 is rotatably connected to the outer wall of the rotating rod 3. A heating layer 17 is provided inside the pretreatment tank 4. An electric heating wire is provided inside the heating layer 17. A feed inlet 5 is provided on the upper surface of the pretreatment tank 4. A mixing and drying mechanism is provided inside the pretreatment tank 4.

[0023] Example 2

[0024] Reference Figure 1 , 23, 4. This embodiment is based on the previous embodiment, but differs in that a feed box 9 is connected to and fixedly connected to one side wall of the drying chamber 8, and a discharge box 10 is connected to and fixedly connected to the other side wall of the drying chamber 8. A first spiral conveyor rod 20 is rotatably connected to the end of the drying chamber 8 near the feed box 9, and a second spiral conveyor rod 21 is rotatably connected to the end of the drying chamber 8 near the discharge box 10. The end of the first spiral conveyor rod 20 away from the feed box 9 passes through the drying chamber 8 and is fixedly connected to a drive gear 18. The end of the second spiral conveyor rod 21 away from the discharge box 10 passes through the drying chamber 8 and is fixedly connected to a driven gear 18. Gear 19, drive gear 18 and driven gear 19 are rotatably connected and are also rotatably connected to the outer wall of drying chamber 8. A servo motor 11 is fixedly connected to one end of the upper surface of the base plate 1. A transmission rod 12 is fixedly connected to the power output end of the servo motor 11 and the transmission rod 12 is fixedly connected to the drive gear 18. A cover plate 22 is connected to the upper surface of the drying chamber 8. A hot air blower 23 is connected to one end of the upper surface of the cover plate 22. A main air supply pipe 24 is fixedly connected to the output end of the hot air blower 23. Multiple sets of branch air supply pipes 25 are fixedly connected to the bottom end of the main air supply pipe 24 and the output ends of the multiple sets of branch air supply pipes 25 all pass through the cover plate 22. The drive gear 18 and driven gear 19 mesh.

[0025] The recycled plastic granules enter the drying chamber 8 through the feed box 9. The servo motor 11 drives the transmission rod 12 to rotate, which in turn drives the drive gear 18 to rotate. The drive gear 18 drives the driven gear 19 to rotate. The driven gear 19 and the drive gear 18 drive the first spiral conveyor 20 and the second spiral conveyor 21 to uniformly convey the recycled plastic granules. At the same time, the hot air fan 23 at the top of the cover plate 22 is started. The hot air fan 23 continuously blows air into the drying chamber 8 through the main air supply pipe 24 and the branch air supply pipe 25 to completely dry the recycled plastic granules. Finally, the recycled plastic granules are conveyed to the discharge box 10 through the first spiral conveyor 20 and the second spiral conveyor 21 for unified collection.

[0026] Example 3

[0027] Reference Figure 1 , 3 This embodiment is based on the previous embodiment, but differs from the previous embodiment in that the pretreatment tank 4 has a discharge port 6 on its lower end face, a feeding pipe 7 is fixedly connected to the bottom end of the discharge port 6, and the other end of the feeding pipe 7 is connected to the feeding box 9. Multiple sets of reciprocating mixing plates 16 are fixedly connected to the outer wall of the rotating rod 3, and the reciprocating mixing plates 16 are all located inside the pretreatment tank 4. A second pulley 15 is fixedly connected to one end of the rotating rod 3, a first pulley 13 is fixedly connected to the outer wall of the transmission rod 12, and a drive belt 14 is movably engaged between the first pulley 13 and the second pulley 15.

[0028] Recycled plastic granules are fed into the pretreatment tank 4 through the feed port 5. The servo motor 11 is started, which drives the transmission rod 12 to rotate. The transmission rod 12 drives the first pulley 13 at the top to rotate. The first pulley 13 drives the second pulley 15 to rotate through the cooperation of the drive belt 14. The second pulley 15 drives the rotating rod 3 to rotate, so that the multiple sets of reciprocating mixing plates 16 at the top continuously turn the recycled plastic granules in the pretreatment tank 4. The pretreatment tank 4 is heated by the heating wire in the heating layer 17 for preliminary drying. After pretreatment, the recycled plastic granules are fed into the feed box 9 of the drying box 8 through the discharge port 6 and the discharge pipe 7.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for drying recycled plastic pellets, comprising a base plate (1), a mixing and drying mechanism, and a conveying and drying mechanism, characterized in that, A drying box (8) is fixedly connected to the center of the upper end face of the base plate (1). A mixing and drying mechanism is provided inside the drying box (8). Limiting plates (2) are fixedly connected to both the left and right ends of the upper end face of the base plate (1). A rotating rod (3) is rotatably connected between the two sets of limiting plates (2). A pretreatment tank (4) is rotatably connected to the outer wall of the rotating rod (3). A heating layer (17) is provided inside the pretreatment tank (4). An electric heating wire is provided inside the heating layer (17). A feed inlet (5) is provided on the upper end face of the pretreatment tank (4). A mixing and drying mechanism is provided inside the pretreatment tank (4).

2. The recycled plastic pellet drying device according to claim 1, characterized in that, The conveying and drying mechanism includes a first spiral conveying rod (20) and a second spiral conveying rod (21). A feed box (9) is connected through and fixedly connected to one side wall of the drying box (8), and a discharge box (10) is connected through and fixedly connected to the other side wall of one side wall of the drying box (8). The first spiral conveying rod (20) is rotatably connected to one end of the drying box (8) near the feed box (9), and the second spiral conveying rod (21) is rotatably connected to one end of the drying box (8) near the discharge box (10).

3. The recycled plastic pellet drying device according to claim 2, characterized in that, The first spiral conveyor rod (20) is connected to the drive gear (18) after passing through the drying box (8) at one end away from the feed box (9). The second spiral conveyor rod (21) is connected to the driven gear (19) after passing through the drying box (8) at one end away from the discharge box (10). The drive gear (18) and the driven gear (19) are rotatably connected and are both rotatably connected to the outer wall of the drying box (8).

4. The recycled plastic pellet drying device according to claim 1, characterized in that, A servo motor (11) is fixedly connected to one end of the upper surface of the base plate (1). A transmission rod (12) is fixedly connected to the power output end of the servo motor (11), and the transmission rod (12) is fixedly connected to the drive gear (18).

5. A recycled plastic pellet drying device according to claim 3, characterized in that, The drying oven (8) has a cover plate (22) on its upper surface. A hot air blower (23) is connected to one end of the upper surface of the cover plate (22). A main air supply pipe (24) is fixedly connected to the output end of the hot air blower (23). Multiple branch air supply pipes (25) are fixedly connected to the bottom end of the main air supply pipe (24), and the output ends of the multiple branch air supply pipes (25) all pass through the cover plate (22).

6. The recycled plastic pellet drying device according to claim 1, characterized in that, The mixing and drying mechanism includes a reciprocating mixing plate (16), and the pretreatment tank (4) has a discharge port (6) on its lower end face. The bottom end of the discharge port (6) is fixedly connected to a feeding pipe (7), and the other end of the feeding pipe (7) is connected to the feeding box (9).

7. The recycled plastic pellet drying device according to claim 1, characterized in that, The outer wall of the rotating rod (3) is fixedly connected to multiple sets of reciprocating mixing plates (16), and the reciprocating mixing plates (16) are all located inside the pretreatment tank (4). One end of the rotating rod (3) is fixedly connected to a second pulley (15), and the outer wall of the transmission rod (12) is fixedly connected to a first pulley (13). A drive belt (14) is movably engaged between the first pulley (13) and the second pulley (15).

8. A recycled plastic pellet drying device according to claim 3, characterized in that, The driving gear (18) meshes with the driven gear (19).

Images