A high-efficiency drying device for modified plastics

Abstract

This utility model relates to the field of polymer material processing machinery, and more particularly to a high-efficiency drying device for modified plastics, including a mounting platform and a conveying assembly. The mounting platform houses a drying tank with a discharge port at its bottom. The conveying assembly is located at the bottom of the discharge port, and a mounting box is connected to the top of the conveying assembly. The mounting box is fitted around the discharge port. A swing plate is rotatably connected inside the mounting box, and a torsion spring is fitted onto the rotating shaft at the left end of the swing plate. A protruding rod is rotatably connected to the bottom of the mounting box, contacting the bottom surface of the swing plate. A first motor is mounted on the front of the mounting box, and its output shaft is keyed to the protruding rod. The conveying assembly is equipped with an air supply component for drying plastic granules. The first motor drives the protruding rod to rotate at a uniform speed, periodically lifting the bottom of the swing plate, forcing it to overcome the resistance of the torsion spring and swing upwards. This action directly applies a strong impact force to the falling plastic granules, physically breaking up clumps of granules that have clumped together due to heat absorption and softening, ensuring granule looseness.

Description

Technical Field

[0001] This utility model relates to the field of polymer material processing machinery, and in particular to a high-efficiency drying device for modified plastics. Background Technology

[0002] With increasing environmental awareness and the development of the circular economy, the recycling and reuse of waste plastic products is receiving growing attention. After sorting, crushing, and washing, various types of waste plastics are processed to obtain recycled plastic pellets. These recycled plastic pellets are important secondary resources and are often used as raw materials for the production of modified plastics. Modified plastics, by adding fillers, toughening agents, flame retardants, and other functional additives, can have their physical and chemical properties significantly improved or endowed to meet the needs of different application fields.

[0003] Recycled plastic granules absorb a large amount of water during the washing process, and the residual moisture has a severely adverse effect on subsequent modification processing and the performance of the final product. Therefore, the washed plastic granules must undergo efficient and thorough drying. Currently, the industry commonly uses a process of heating and drying the moist plastic granules in specialized drying equipment. This process aims to use heat energy to evaporate the moisture inside and on the surface of the granules, ultimately achieving the low moisture content required by the process.

[0004] However, during the heating and drying process, the evaporation of moisture inside the plastic granules requires the absorption of a large amount of heat. This heat is mainly conducted and absorbed by the plastic granules themselves. For many thermoplastics, their glass transition temperature or softening point is relatively low. Particles in a dynamic tumbling or stacking state are prone to sticking and fusing due to mutual contact and compression, eventually forming lumps or clumps that are difficult to disperse. This clumping phenomenon not only severely hinders the uniform penetration of hot air or airflow into the granule layer, leading to a sharp drop in drying efficiency, but also makes the agglomerated plastic prone to causing equipment blockage, uneven feeding, and even affecting the uniformity and quality stability of the final product during subsequent processing. Utility Model Content

[0005] To overcome the drawbacks of adhesion and clumping, this invention provides a high-efficiency drying device for modified plastics, aiming to solve the aforementioned shortcomings.

[0006] A high-efficiency drying device for modified plastics includes a mounting platform and a conveying assembly. A drying tank is mounted on the mounting platform, and a discharge port is located at the bottom of the drying tank. The conveying assembly is located at the bottom of the discharge port, and a mounting box is connected to the top of the conveying assembly. The mounting box is fitted around the outer ring of the discharge port. A swing plate is rotatably connected inside the mounting box. A torsion spring is fitted onto the rotating shaft at the left end of the swing plate. One end of the torsion spring is connected to the swing plate, and the other end is connected to the mounting box. A protruding rod is rotatably connected to the bottom of the mounting box, and the protruding rod contacts the bottom surface of the swing plate. A first motor is mounted on the front side of the mounting box, and the output shaft of the first motor is keyed to the protruding rod. The conveying assembly is equipped with an air supply component for drying plastic granules.

[0007] In one embodiment, the air supply assembly includes a fixed frame, and a plurality of the fixed frames are connected to the right end of the conveying assembly. A second motor is installed inside the fixed frame, and the output shaft of the second motor faces downward and is connected to blades.

[0008] In one embodiment, a protective net is provided on the top of the mounting frame.

[0009] In one embodiment, a buffer pad is connected to the bottom surface of the swing plate, and the protruding rod is slidably connected to the buffer pad.

[0010] In one embodiment, a guide plate is connected to the left end of the mounting box, the guide plate being used to restrict the movement of the plastic particles.

[0011] In one embodiment, a splash guard is attached to the top of the conveying assembly, and the left end of the splash guard is connected to the mounting box.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The first motor drives the convex rod to rotate at a constant speed, periodically lifting the bottom of the swing plate, forcing the swing plate to overcome the resistance of the torsion spring and swing upward. This action directly applies a strong impact force to the falling plastic particles, physically breaking up the particle clumps that have stuck together due to heat absorption and softening, ensuring the looseness of the particles.

[0014] 2. The blades are driven to rotate at high speed by the second motor, generating a directional strong cold airflow that blows vertically toward the surface of the conveyor belt. This airflow causes the surface temperature of the particles to drop sharply below the softening point, preventing the particles from softening and sticking together again due to residual heat, and ensuring that the particles enter the packaging process in a discrete state. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the mounting structure of the swing plate and torsion spring of this utility model.

[0017] Figure 3 This is a schematic diagram of the installation structure of the blade and the second motor of this utility model.

[0018] The markings in the diagram are as follows: 1-mounting platform, 2-drying tank, 3-discharge port, 4-mounting box, 5-swing plate, 6-torsion spring, 7-protruding rod, 8-first motor, 9-conveying assembly, 10-fixed frame, 11-blade, 12-second motor, 13-protective net, 14-buffer pad, 15-guide plate, 16-splash cover. Detailed Implementation

[0019] 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.

[0020] Example: A high-efficiency drying device for modified plastics, such as... Figures 1-3 As shown, the assembly includes a mounting platform 1, a drying tank 2, a mounting box 4, a swing plate 5, a torsion spring 6, a protruding rod 7, a first motor 8, a conveying assembly 9, and an air supply assembly. The drying tank 2 is mounted on the mounting platform 1. A discharge port 3 is located at the bottom of the drying tank 2. The conveying assembly 9 is located at the bottom of the discharge port 3. The mounting box 4 is connected to the top of the conveying assembly 9 and is fitted around the outer ring of the discharge port 3. A swing plate 5 is rotatably connected inside the mounting box 4. A torsion spring 6 is fitted onto the rotating shaft at the left end of the swing plate 5. One end of the torsion spring 6 is connected to the swing plate 5, and the other end... Connected to the mounting box 4, the bottom of the mounting box 4 is rotatably connected to a protruding rod 7, which contacts the bottom surface of the swing plate 5. A first motor 8 is installed on the front side of the mounting box 4, and the output shaft of the first motor 8 is keyed to the protruding rod 7. When the protruding rod 7 is lifted, the torsion spring 6 causes the swing plate 5 to swing upward around the axis. When the protruding rod 7 falls back, the torsion spring 6 pulls the swing plate 5 to reset at high speed, forming a large-angle slapping action at the right end. The high-frequency mechanical impact directly breaks the thermally softened and adhered granular clumps. The conveying component 9 is equipped with an air supply component for drying plastic granules.

[0021] like Figure 1 and Figure 3 As shown, the air supply assembly includes a fixed frame 10, blades 11, and a second motor 12. The right end of the conveying assembly 9 is connected to three fixed frames 10. Each fixed frame 10 is equipped with two second motors 12. The output shaft of the second motor 12 faces downward and is connected to the blades 11. The second motor 12 drives the blades 11 to generate a high-speed airflow that blows vertically toward the surface of the conveyor belt.

[0022] like Figure 1 and Figure 3As shown, it also includes a protective net 13. The top of the fixing frame 10 is equipped with a protective net 13, which intercepts foreign objects and ensures the purity of the airflow.

[0023] like Figure 2 As shown, it also includes a buffer pad 14. The bottom surface of the swing plate 5 is connected to the buffer pad 14. The protruding rod 7 is slidably connected to the buffer pad 14. The buffer pad 14 extends the service life of the mechanism and reduces maintenance costs.

[0024] like Figure 2 As shown, it also includes a guide plate 15. The guide plate 15 is connected to the left end of the mounting box 4. The guide plate 15 is used to limit the movement of plastic particles. The guide plate 15 precisely controls the drop point of the particles and avoids the shaft from jamming.

[0025] like Figure 1 As shown, it also includes a splash guard 16. The top of the conveying assembly 9 is connected to the splash guard 16, and the left end of the splash guard 16 is connected to the mounting box 4. The splash guard 16 catches splashed particles and ensures that they all fall into the conveying assembly 9.

[0026] Workers pour the cleaned plastic granules into the drying tank 2 and start the drying tank 2 to heat and dry them. After drying, workers open the discharge port 3 at the bottom of the drying tank 2, and the dried plastic granules fall into the mounting box 4 below. In the mounting box 4, the guide plate 15 guides and restricts the movement path of the plastic granules, preventing them from accumulating at the left end of the mounting box 4 and protecting the swing plate 5 from getting stuck when rotating. At the same time, workers start the first motor 8, which drives the protruding rod 7 to rotate continuously. The rotating protruding rod 7 continuously strikes the bottom of the swing plate 5, forcing the swing plate 5 to swing upwards around its left pivot against the torque of the torsion spring 6. When the protruding part of the protruding rod 7 rotates away, the torsion spring 6 pulls the swing plate 5 to quickly return to its original position. This continuous striking-returning action causes the swing plate 5 to swing repeatedly with a large amplitude, powerfully slapping and bouncing the falling plastic granules, effectively breaking up any clumps that may form during the drying process. The broken plastic granules are blocked by the splash guard 16 and fall all towards the conveying assembly 9 below. The conveying assembly 9 continuously transports the dispersed plastic granules to the right. Simultaneously, the operator activates the second motor 12 in the air supply assembly, driving the blades 11 to rotate at high speed, generating a strong airflow that blows onto the plastic granules on the surface of the conveying assembly 9, cooling them down. Finally, the loose plastic granules, having undergone air cooling, are conveyed to the right end for collection and packaging.

[0027] The inclined shape of the guide plate 15 directs falling plastic particles to the effective working area of ​​the oscillating plate 5, providing a particle-free operating environment for the rotation of the oscillating plate 5. The protective net 13 covers the top of the mounting frame 10; its mesh structure allows air to pass freely for the blades 11 to draw in or blow out, while effectively intercepting debris from the external environment to prevent it from entering the airflow channel, contaminating the plastic particles, or damaging the blades 11. The buffer pad 14 has a smooth surface and a certain degree of elasticity. When the protruding part of the rotating convex rod 7 slides over or impacts the buffer pad 14, it significantly reduces direct friction and impact noise between metal parts, making the striking action of the convex rod 7 on the oscillating plate 5 smoother and more stable, reducing wear.

[0028] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A modified plastic high efficiency drying apparatus, characterized by: The utility model provides a kind of drying plastic particles, including installation platform (1) and conveying assembly (9), the installation platform (1) is equipped with drying tank (2), the bottom of drying tank (2) is provided with discharge port (3), conveying assembly (9) is located the bottom of discharge port (3), the top of conveying assembly (9) is connected with installation box (4), installation box (4) is sleeved on the outer ring of discharge port (3), swing plate (5) is rotatably connected in installation box (4), the pivot sleeve of left end of swing plate (5) is equipped with torsion spring (6), one end of torsion spring (6) is connected with swing plate (5), the other end is connected with installation box (4), the bottom rotatably connected in installation box (4) is with convex rod (7), convex rod (7) is in contact with the bottom surface of swing plate (5), first motor (8) is installed on the front side of installation box (4), the output shaft of first motor (8) is keyed with convex rod (7), conveying assembly (9) is provided with air supply assembly for drying plastic particles.

2. The modified plastic high-efficiency drying apparatus according to claim 1, characterized in that: Air supply assembly includes fixed frame (10), the right end of conveying assembly (9) is connected with a plurality of fixed frame (10), second motor (12) is installed in fixed frame (10), the output shaft of second motor (12) is downward and connected with blade (11).

3. The modified plastic high-efficiency drying apparatus according to claim 2, characterized in that: The top of fixed frame (10) is provided with protective net (13).

4. The modified plastic high-efficiency drying apparatus according to claim 1, characterized in that: The bottom surface of swing plate (5) is connected with buffer pad (14), and the convex rod (7) is slidably connected with the buffer pad (14).

5. The high-efficiency drying equipment for modified plastics as described in claim 1, characterized in that: The left end in installation box (4) is connected with guide plate (15), and the guide plate (15) is used to limit the moving position of plastic particles.

6. The modified plastic high efficiency drying apparatus of claim 1, wherein: The top of conveying assembly (9) is connected with splash guard (16), and the left end of splash guard (16) is connected with installation box (4).

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