A plastic particle dewatering and drying device

Abstract

This utility model discloses a plastic granule dehydration and drying device, relating to the field of drying devices. It includes a tank body, with an outer cylinder fixedly connected inside. The outer wall of the outer cylinder is provided with multiple layers of breathable mesh spaced along its height, and a first through-hole is provided on the side wall above each layer of breathable mesh. A first opening is horizontally provided at the top of each of the first through-holes on the outer cylinder. An inner cylinder is coaxially rotatably connected to the inside of the outer cylinder, and its side wall is provided with a second through-hole corresponding to the first through-hole. The inner cylinder is also provided with second openings spaced along its height that correspond to the first openings. The alignment of the first through-hole with the second through-hole is different from the alignment of the first opening with the second opening. This utility model utilizes the combined rotation of the inner and outer cylinders to evenly disperse the plastic granules onto each layer of breathable mesh, preventing excessive accumulation of plastic granules. Simultaneously, by reducing the flow rate of the high-temperature airflow, it can reduce energy consumption while maintaining high drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment, specifically a plastic granule dehydration and drying device. Background Technology

[0002] Plastic granule dehydration and drying equipment is a key piece of equipment in plastic processing. It can effectively remove moisture from the surface of plastic granules, ensuring product quality in subsequent injection molding, extrusion and other processes.

[0003] In the existing technology, equipment for drying plastic granules generally adopts two methods. One method is to place the plastic granules in a drying box and use a slow-flowing high-temperature airflow to evaporate the moisture in the plastic granules. The other method is to let the plastic granules fall at a uniform speed and use a high-speed and high-temperature airflow to dry the plastic granules during the falling process.

[0004] Regarding the aforementioned technologies, existing slow-speed airflow drying methods for plastic granules are prone to reduced airflow capacity between the granules due to granule accumulation, making it difficult for the airflow to efficiently dry the deeper layers of plastic granules, resulting in a longer drying time. While using high-speed and high-temperature airflow to dry plastic granules allows for more thorough contact between the airflow and the plastic granules, effectively removing moisture from the surface of the plastic granules, the high airflow velocity leads to higher energy consumption.

[0005] In summary, existing plastic pellet drying equipment is not suitable for drying plastic pellets efficiently and energy-savingly. Utility Model Content

[0006] Based on this, the purpose of this utility model is to provide a plastic granule dehydration and drying device to solve the technical problem that existing plastic granule drying devices are not easy to dry plastic granules efficiently and energy-savingly.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a plastic granule dehydration and drying device, comprising a tank body, an outer cylinder fixedly connected inside the tank body, multiple layers of breathable mesh spaced at intervals along the height direction on the outer wall of the outer cylinder, and a first through-hole provided on the side wall above each layer of breathable mesh, the outer cylinder having a first opening horizontally provided at the top of each first through-hole, and an inner cylinder, the inner cylinder being coaxially rotatably connected to the inside of the outer cylinder, and having a second through-hole corresponding to the first through-hole on its side wall, the inner cylinder having second openings spaced at intervals along the height direction that correspond to the first openings, the state of the first through-hole aligning with the second through-hole being different from the state of the first opening aligning with the second opening.

[0008] By adopting the above technical solution, multiple layers of breathable mesh for accommodating plastic particles are set at intervals along the height direction inside the tank. By using the combination and rotation of the inner and outer cylinders, the plastic particles are evenly dispersed to each layer of breathable mesh. This avoids the plastic particles from accumulating too thickly. At the same time, by reducing the flow rate of the high-temperature airflow, energy consumption can be reduced while maintaining a high drying efficiency.

[0009] The present invention is further configured such that each layer of breathable mesh in the vertical direction of the tank is slidably connected with a partition ring, the partition rings are connected to each other by connecting columns distributed in a ring, and two of the connecting columns extend upward through the tank and are connected to a telescopic column that extends and retracts in the vertical direction.

[0010] Preferably, the spacer ring is used to prevent undried plastic particles from falling.

[0011] The present invention is further configured such that the side of the spacer ring facing the breathable mesh is an inclined surface.

[0012] Preferably, plastic particles falling from the edge of the breathable mesh are prevented from remaining on the spacer ring.

[0013] The present invention is further configured such that an air inlet is fixedly connected to the side wall at the bottom of the tank and an air outlet is provided at the top. The bottom of the tank is inverted conical and a discharge port is provided at the bottom.

[0014] Preferably, the hot air enters the tank through the air inlet, flows upward, and exits from the air outlet.

[0015] The present invention is further configured such that the air inlet is angled upward.

[0016] Preferably, this design prevents plastic particles from falling into the air inlet.

[0017] The present invention is further configured such that an inverted conical feed hopper is connected to the top of the outer cylinder.

[0018] Preferably, it facilitates the pouring of plastic granules to be dried into the outer cylinder.

[0019] The present invention is further configured such that a rotating shaft is fixedly connected to the center of the inner cylinder, and the rotating shaft extends vertically out of the tank and is connected to a driving mechanism.

[0020] Preferably, the rotation angle of the inner cylinder can be adjusted by rotating the shaft.

[0021] The present invention is further provided that a vibration motor is installed on the side wall of the tank.

[0022] Preferably, the vibration motor helps the plastic particles to be evenly distributed on the breathable mesh.

[0023] The present invention is further configured such that the area of ​​the first opening is larger than the area of ​​the second opening.

[0024] Preferably, this facilitates the vertical falling of plastic granules within the inner cylinder.

[0025] The present invention is further configured such that the partitions and ventilation mesh inside the outer cylinder and the inner cylinder are all configured as conical structures.

[0026] Preferably, the distribution of plastic particles towards the edge of the breathable mesh and the speed at which they fall off the edge of the breathable mesh are further improved.

[0027] In summary, the present invention has the following main advantages:

[0028] This invention uses multiple layers of breathable mesh arranged at intervals along the height of the tank to accommodate plastic particles. By rotating the inner and outer cylinders together, the plastic particles are evenly dispersed onto each layer of breathable mesh. This avoids excessive accumulation of plastic particles while reducing the flow rate of the high-temperature airflow, thereby reducing energy consumption and maintaining high drying efficiency. Attached Figure Description

[0029] Figure 1 This is a perspective view of the present utility model;

[0030] Figure 2 A three-dimensional view of the internal structure of the tank when the first and second openings of this utility model are aligned and the spacer ring has not descended;

[0031] Figure 3 A three-dimensional view of the internal structure of the tank when the first and second openings of this utility model are aligned and the spacer ring is lowered.

[0032] Figure 4 A perspective view of the outer and inner cylinders when the first and second openings of this utility model are misaligned;

[0033] Figure 5 This is a perspective view of the outer cylinder of this utility model;

[0034] Figure 6 This is a three-dimensional view of the inner cylinder of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Tank body; 101. Air inlet; 102. Air outlet; 103. Discharge outlet; 2. Outer cylinder; 201. First through-hole; 202. First through-hole; 203. Feed hopper; 3. Inner cylinder; 301. Second through-hole; 302. Second through-hole; 303. Rotating shaft; 304. Handwheel; 4. Ventilation mesh; 5. Spacer ring; 6. Connecting column; 7. Telescopic column; 8. Vibration motor. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of this utility model will be described below based on its overall structure.

[0039] First embodiment:

[0040] A plastic granule dehydration and drying device, please refer to Figure 1-6 The device includes a tank body 1, an outer cylinder 2 fixedly connected inside the tank body 1, and multiple layers of breathable mesh 4 spaced apart along the height direction on the outer wall of the outer cylinder 2. A first through-hole 202 is provided on the side wall above each layer of breathable mesh 4. A first opening 201 is horizontally provided at the top of each first through-hole 202 on the outer cylinder 2. Specifically, the first opening 201 is provided on the partitions spaced apart along the height direction on the outer cylinder 2. A vibration motor 8 is installed on the side wall of the tank body 1. The vibration motor 8 helps the plastic particles to be evenly distributed on the breathable mesh 4.

[0041] It also includes an inner cylinder 3, which is coaxially rotatably connected to the inside of the outer cylinder 2, and the side wall is provided with a second through-hole 302 corresponding to the first through-hole 202. The inner cylinder 3 is provided with second through-holes 301 that correspond to the first through-hole 201 at intervals along the height direction. The state in which the first through-hole 202 is aligned with the second through-hole 302 is different from the state in which the first through-hole 201 is aligned with the second through-hole 301.

[0042] For details regarding the above embodiments, please refer to [link / reference]. Figure 1-4 An air inlet 101 is fixedly connected to the side wall at the bottom of the tank body 1, and an air outlet 102 is provided at the top. The bottom of the tank body 1 is inverted cone shape, and a discharge port 103 is provided at the bottom. Hot air enters the tank body 1 through the air inlet 101 and flows upward, and then flows out from the air outlet 102.

[0043] For details regarding the above embodiments, please refer to [link / reference]. Figure 2-4 Inside the tank 1, each layer of breathable mesh 4 is slidably connected with a partition ring 5 along the vertical direction. The partition rings 5 ​​are connected to each other by connecting columns 6 distributed in a ring. Two connecting columns 6 extend upward through the tank 1 and are connected to telescopic columns 7 that extend and retract in the vertical direction. The partition rings 5 ​​are used to prevent the plastic particles that have not been dried from falling.

[0044] Specifically, in this embodiment, the telescopic column 7 is an electric telescopic rod. Before the telescopic column 7 is retracted, the edge of the spacer ring 5 is close to the edge of the breathable net 4. When the telescopic column 7 is retracted, the plastic particles can fall from the edge of the breathable net 4. Specifically, the breathable net 4 is made of metal and has sufficient rigidity to stably support the plastic particles. At the same time, since the breathable net 4 is connected to the outer cylinder 2, and the outer cylinder 2 is connected to the tank 1, the vibration of the tank 1 can also be transmitted to the breathable net 4 synchronously, which is conducive to the rapid dispersion of plastic particles on the breathable net 4.

[0045] Furthermore, a rotating shaft 303 is fixedly connected to the center of the inner cylinder 3. The rotating shaft 303 extends vertically out of the tank body 1 and is connected to a drive mechanism. Rotating the rotating shaft can adjust the rotation angle of the inner cylinder 3. Specifically, in this embodiment, a handwheel 304 is fixedly connected to the top of the rotating shaft 303. When it is necessary to put plastic granules into the feed hopper 203, the rotating shaft 303 can be manually rotated. In other undisclosed embodiments, a drive mechanism such as a motor can also be used to drive the rotating shaft 303 to rotate, so as to realize the automation of feeding.

[0046] Second embodiment:

[0047] A plastic granule dehydration and drying device, please refer to Figure 1-6 Based on the first embodiment, the difference from the first embodiment is that the partitions and the ventilation mesh 4 inside the outer cylinder 2 and the inner cylinder 3 are all set as conical structures, which further improves the speed at which plastic particles are distributed to the edge on the ventilation mesh 4 and fall from the edge of the ventilation mesh 4. The conical structure of the ventilation mesh 4 can accelerate the speed at which plastic particles disperse to the edge, but it will make the thickness of the plastic particles at the edge greater than that of the plastic particles in the center. Therefore, it is more suitable for plastic particles that do not need to be dried for a long time, such as plastic particles with low moisture content that do not need to be dried for a long time in the tank 1.

[0048] For details regarding the above embodiments, please refer to [link / reference]. Figure 2-4 The side of the partition ring 5 facing the breathable mesh 4 is inclined, so that plastic particles falling from the edge of the breathable mesh 4 can avoid staying on the partition ring 5. The area of ​​the first opening 201 is larger than the area of ​​the second opening 301, which facilitates the plastic particles to fall vertically in the inner cylinder 3.

[0049] Furthermore, the air inlet 101 is angled upward to prevent plastic particles from falling into the air inlet 101. The top of the outer cylinder 2 is connected to an inverted conical feed hopper 203, which facilitates the pouring of plastic particles to be dried into the outer cylinder 2.

[0050] In practical operation, this utility model is as follows:

[0051] Rotate the shaft 303 to make the first through-hole 202 and the second through-hole 302 misaligned and the first through-hole 201 and the second through-hole 301 aligned. Pour the plastic granules to be dried into the feed hopper 203. The plastic granules fall vertically to fill the space inside the inner cylinder 3. Then rotate the shaft 303 to make the first through-hole 202 and the second through-hole 302 aligned and the first through-hole 201 and the second through-hole 301 misaligned. At this time, the plastic granules in the inner cylinder 3 are separated into multiple parts corresponding to each layer of breathable mesh 4. Under the vibration of the tank 1, the plastic granules pass through the aligned first through-hole 202 and the second through-hole 302 from the inner cylinder 3 and are scattered on the breathable mesh 4 and distributed relatively evenly. They are efficiently dried under the action of the upward flowing hot air in the tank 1.

[0052] After the set drying time, the telescopic column 7 controls the diaphragm 5 to descend, causing the diaphragm 5 to detach from the edge of the breathable mesh 4. The dried plastic granules on the breathable mesh 4 gradually fall off the edge of the breathable mesh 4. As the diaphragm 5 descends, the hot airflow inside the tank 1 continues to flow upward, further drying a small number of plastic granules that were originally located in the inner cylinder 3, ensuring that the output plastic granules have a qualified moisture content. This process is repeated to achieve efficient and energy-saving drying of plastic granules.

[0053] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A plastic particle dewatering and drying apparatus, characterized by, include: Tank (1), an outer cylinder (2) is fixedly connected inside the tank (1), and the outer wall of the outer cylinder (2) is provided with multiple layers of breathable mesh (4) at intervals along the height direction, and a first through hole (202) is provided on the side wall above each layer of breathable mesh (4), and a first through hole (201) is provided horizontally at the top of the first through hole (202) of the outer cylinder (2). The inner cylinder (3) is coaxially rotatably connected to the inside of the outer cylinder (2), and the side wall is provided with a second through-hole (302) corresponding to the first through-hole (202). The inner cylinder (3) is provided with second through-holes (301) that can correspond to the first through-hole (201) at intervals along the height direction. The state in which the first through-hole (202) is aligned with the second through-hole (302) is different from the state in which the first through-hole (201) is aligned with the second through-hole (301).

2. The plastic particles dewatering and drying apparatus according to claim 1, wherein: Inside the tank (1), each layer of breathable mesh (4) is slidably connected with a partition ring (5) along the vertical direction. The partition rings (5) are connected to each other by connecting columns (6) distributed in a ring. Two of the connecting columns (6) extend upward through the tank (1) and are connected to a telescopic column (7) that extends and retracts along the vertical direction.

3. The plastic pellet dewatering and drying apparatus according to claim 2, wherein: The side of the spacer ring (5) facing the breathable mesh (4) is inclined.

4. The plastic granule dehydration and drying device according to claim 1, characterized in that: The tank (1) has an air inlet (101) fixedly connected to the side wall at the bottom end, and an air outlet (102) provided at the top end. The bottom end of the tank (1) is inverted cone shape, and a discharge port (103) is provided at the bottom end.

5. The plastic granule dehydration and drying device according to claim 4, characterized in that: The air inlet (101) is set at an angle upward.

6. The plastic pellet dewatering and drying apparatus as claimed in claim 1, wherein: The top of the outer cylinder (2) is connected to an inverted conical feed hopper (203).

7. The plastic pellet dewatering and drying apparatus as claimed in claim 1, wherein: The inner cylinder (3) is fixedly connected to a rotating shaft (303) at its center. The rotating shaft (303) extends vertically out of the tank (1) and is connected to a driving mechanism.

8. The plastic pellet dewatering and drying apparatus as claimed in claim 1, wherein: A vibration motor (8) is installed on the side wall of the tank (1).

9. The plastic pellet dewatering and drying apparatus as claimed in claim 1, wherein: The area of ​​the first opening (201) is larger than the area of ​​the second opening (301).

10. The plastic granule dehydration and drying device according to claim 1, characterized in that: The partitions and ventilation mesh (4) inside the outer cylinder (2) and inner cylinder (3) are all set as conical structures.

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