Plastic particle screening device based on airflow separation

Abstract

The utility model belongs to the technical field of screening, and particularly relates to a plastic particle screening device based on airflow sorting, which comprises a conveying belt, the front side and the rear side of the conveying belt are fixedly connected with limiting strips respectively, the top end of the conveying belt is provided with a drying box, and the front side of the drying box is fixedly connected with a supporting plate. A first motor is fixedly connected to the top end of the supporting plate, a threaded rod is fixedly connected to the driving end of the first motor, a sliding plate is in threaded connection with the outer portion of the threaded rod, a plurality of stirring teeth are fixedly connected to the bottom end of the sliding plate, and sliding grooves are formed in the left side and the right side of the drying box correspondingly. A heating plate is fixedly connected into the top end of the drying box. Through the first motor, the threaded rod, the sliding plate, the stirring teeth, the drying box and the heating plate, the problem of corrosion caused by moisture is effectively solved, the service life of equipment is prolonged, and the updating frequency and the maintenance cost of the equipment are reduced.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, specifically to a plastic particle screening device based on airflow separation. Background Technology

[0002] Currently, some common methods for screening plastic granules involve using traditional vibrating screens or drum screens. These screening devices primarily achieve particle separation through mechanical vibration or rolling, and are effective in removing large impurities. However, they have several drawbacks. On the one hand, their screening accuracy is limited, making it difficult to effectively separate impurities similar in size to the plastic granules. On the other hand, this mechanical screening method easily damages the plastic granules, affecting their quality. Furthermore, the equipment generates significant noise, consumes a lot of energy, and has high maintenance costs.

[0003] The existing technology has the following defects or problems: Existing technology, publication number CN222309448U, discloses a novel screening device for plastic granules, including a base plate. A first motor is fixedly connected to the outer wall of the base plate. A second sprocket is meshed with the outer wall of a first chain. A first gear is rotatably connected to the outer wall of the second sprocket. A second gear is meshed with the outer wall of the first gear. A resonant plate is fixedly connected to the lower surface of the first screening plate. A first rotating shaft is rotatably connected to the inner wall of the resonant plate. A second screening plate is fixedly connected to the outer wall of the first rotating shaft. A material collection and feeding assembly is provided on the outer wall of the first screening plate. In this invention, the first motor drives the first sprocket and the first chain to drive the second sprocket and the first gear to drive the second gear and the vibrating block to move. The first screening plate vibrates. When the first screening plate screens the granules, it drives the resonant plate and the first rotating shaft to drive the second screening plate to vibrate, achieving a multi-stage screening effect.

[0004] The aforementioned equipment struggles to remove moisture from the surface of plastic granules during operation, leading to mis-sorting or missed sorting of granules that would otherwise be accurately separated. Furthermore, some existing plastic granule screening devices cannot effectively separate plastic granules using airflow, resulting in unstable granule composition and quality, ultimately affecting the quality of the final product.

[0005] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a plastic particle screening device based on airflow sorting, which solves the current problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a plastic particle screening device based on airflow sorting, comprising a conveyor belt, with limit strips fixedly connected to the front and rear sides of the conveyor belt, a drying chamber at the top of the conveyor belt, a support plate fixedly connected to the front side of the drying chamber, a motor fixedly connected to the top of the support plate, a threaded rod fixedly connected to the drive end of the motor, a sliding plate threaded to the external thread of the threaded rod, a plurality of actuating teeth fixedly connected to the bottom end of the sliding plate, grooves respectively opened inside the left and right sides of the drying chamber, a heating plate fixedly connected to the top of the drying chamber, a plurality of support legs fixedly connected to the bottom end of the drying chamber, and a sorting component provided on the right side of the conveyor belt.

[0008] As a preferred embodiment of this utility model, the sorting component includes a sorting box, a bellows fixedly connected to the top of the sorting box, a fixing block fixedly connected to the front side of the bellows, a second motor fixedly connected to the top of the fixing block, a rotating shaft fixedly connected to the drive end of the second motor, multiple blades fixedly connected to the outside of the rotating shaft, an L-shaped channel fixedly connected to the inside of the top of the sorting box, a debris discharge port fixedly connected to the right side of the bellows, and a collection port fixedly connected to the bottom of the sorting box.

[0009] As a preferred embodiment of this utility model, the outer surfaces of the plurality of actuating teeth are in contact with the adjacent sides of the two limiting strips, and the bottom ends of the plurality of actuating teeth are in contact with the top end of the conveyor belt.

[0010] As a preferred embodiment of this utility model, the front and rear sides of the threaded rod are rotatably connected to the inner walls of the front and rear sides of the drying oven, and the left and right sides of the sliding plate are slidably connected to the inner walls of the left and right sides of the drying oven.

[0011] As a preferred embodiment of this invention, the top end of the heating plate is fixedly connected to the inner wall of the top end of the drying oven.

[0012] As a preferred embodiment of this utility model, the bottom end of the bellows is fixedly connected to the top end of the distribution box, and the top end of the L-shaped channel is fixedly connected to the inner wall of the top end of the distribution box.

[0013] As a preferred embodiment of this utility model, the left side of the debris discharge port is fixedly connected to the right side of the air box.

[0014] Compared with the prior art, this utility model provides a plastic particle screening device based on airflow sorting, which has the following beneficial effects:

[0015] 1. A plastic particle screening device based on airflow sorting, comprising a motor, a threaded rod, a sliding plate, agitating teeth, a drying chamber, and a heating plate. When the motor is started, it drives the threaded rod to rotate, causing the sliding plate to reciprocate linearly in the horizontal direction under the action of the threaded rod. As the sliding plate moves, the agitating teeth at its bottom also move. At the same time, the heating plate is energized and heats up. The heat is transferred in the drying chamber, drying the plastic particles agitated by the agitating teeth. After drying in the drying chamber, the moisture on the surface of the plastic particles is removed, thereby effectively preventing corrosion caused by moisture, extending the service life of the equipment, and reducing the frequency of equipment replacement and maintenance costs.

[0016] 2. A plastic particle screening device based on airflow sorting, comprising a second motor, a rotating shaft, blades, a bellows, an L-shaped channel, a debris discharge port, a distribution box, and a collection port. When the second motor is started, it drives the rotating shaft to rotate, and multiple blades on the rotating shaft rotate at high speed. The blades rotate at high speed in the bellows, rapidly agitating the air and generating a high-speed airflow. Under the action of the high-speed airflow, lighter plastic particles are blown upward by the airflow and eventually discharged from the debris discharge port, while heavier plastic particles, due to their greater weight and inertia, fall downward under the action of gravity and are collected through the collection port at the bottom of the distribution box. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the drying oven structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the material distribution box structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the L-shaped channel structure of this utility model.

[0021] In the diagram: 1. Conveyor belt; 2. Limiting strip; 3. Drying oven; 4. Support plate; 5. Motor 1; 6. Threaded rod; 7. Slide plate; 8. Actuating gear; 9. Slide groove; 10. Heating plate; 11. Support leg; 12. Distributor box; 13. Air box; 14. Fixing block; 15. Motor 2; 16. Rotating shaft; 17. Blade; 18. L-shaped channel; 19. Waste discharge port; 20. Collection port. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] Please see Figure 1-4 In this embodiment: a plastic particle screening device based on airflow sorting includes a conveyor belt 1, with limit strips 2 fixedly connected to the front and rear sides of the conveyor belt 1 respectively. A drying chamber 3 is installed at the top of the conveyor belt 1, and a support plate 4 is fixedly connected to the front side of the drying chamber 3. A motor 5 is fixedly connected to the top of the support plate 4, and a threaded rod 6 is fixedly connected to the drive end of the motor 5. The front and rear sides of the threaded rod 6 are rotatably connected to the inner walls of the front and rear sides of the drying chamber 3. A sliding plate 7 is threadedly connected to the outside of the threaded rod 6, and the left and right sides of the sliding plate 7 are externally sliding... The sliding plate 7 is connected to the inner walls of the left and right sides of the drying chamber 3. Multiple actuating teeth 8 are fixedly connected to the bottom of the sliding plate 7. The outer side of the multiple actuating teeth 8 contacts the adjacent side of the two limiting strips 2. The bottom of the multiple actuating teeth 8 contacts the top of the conveyor belt 1. Sliding grooves 9 are respectively opened inside the left and right sides of the drying chamber 3. A heating plate 10 is fixedly connected to the top of the drying chamber 3. The top of the heating plate 10 is fixedly connected to the inner wall of the top of the drying chamber 3. Multiple support legs 11 are fixedly connected to the bottom of the drying chamber 3. A sorting component is set on the right side of the conveyor belt 1.

[0025] In this embodiment, limiting strips 2 are fixedly connected to the front and rear sides of the conveyor belt 1. The function of the limiting strips 2 is to prevent plastic particles from falling off the sides of the conveyor belt 1 during the conveying process, ensuring that the particles can move in an orderly manner on the conveyor belt 1. When the plastic particles enter the drying chamber 3 below the conveyor belt 1, the motor 5 starts. The motor 5 drives the threaded rod 6 to rotate. Since the sliding plate 7 is threadedly connected to the threaded rod 6, and the left and right sides of the sliding plate 7 slide in the grooves 9 on the left and right inner walls of the drying chamber 3, the sliding plate 7 will reciprocate linearly in the horizontal direction under the drive of the threaded rod 6. As the sliding plate 7 moves, the actuating teeth 8 at its bottom also move accordingly. The agitator 8 contacts the limiting strip 2 and the top of the conveyor belt 1. During the movement, the agitator 8 continuously turns over the plastic particles on the conveyor belt 1, allowing the plastic particles to be fully exposed to the dry environment. At the same time, the heating plate 10 is energized and heats up. The heat is transferred in the drying chamber 3 to dry the plastic particles turned over by the agitator 8. After drying in the drying chamber 3, the moisture on the surface of the plastic particles is removed, providing conditions for accurate airflow sorting in the subsequent process.

[0026] Example 2

[0027] like Figure 1 - Figure 4 As shown, the sorting assembly includes a sorting box 12, a bellows 13 fixedly connected to the top of the sorting box 12, a bottom of the bellows 13 fixedly connected to the top of the sorting box 12, a fixing block 14 fixedly connected to the front side of the bellows 13, a second motor 15 fixedly connected to the top of the fixing block 14, a rotating shaft 16 fixedly connected to the drive end of the second motor 15, multiple blades 17 fixedly connected to the outside of the rotating shaft 16, an L-shaped channel 18 fixedly connected to the inside of the top of the sorting box 12, the top of the L-shaped channel 18 fixedly connected to the inner wall of the top of the sorting box 12, a debris discharge port 19 fixedly connected to the right side of the bellows 13, a debris discharge port 19 fixedly connected to the left side of the bellows 13, and a collection port 20 fixedly connected to the bottom of the sorting box 12.

[0028] In this embodiment, when the dried plastic granules enter the L-shaped channel above the distribution box 12 from the right side of the conveyor belt 1, the second motor 15 starts. The second motor 15 drives the rotating shaft 16 to rotate, and the multiple blades 17 on the rotating shaft 16 rotate at high speed. The blades 17 rotate at high speed in the air box 13, which quickly agitates the air and generates a high-speed airflow. The plastic granules fall from the L-shaped channel into the space formed by the air box 13 and the distribution box 12. Under the action of the high-speed airflow, plastic granules of different densities and sizes will exhibit different motion states. The lighter plastic granules will be blown upward by the airflow, and some of the lighter granules will be blown towards the debris discharge port 19 and eventually discharged from the debris discharge port 19, realizing the initial separation of light debris from plastic granules. The heavier plastic granules, due to their greater weight and inertia, are less affected by the airflow. They will fall downward under the action of gravity and be collected through the collection port 20 at the bottom of the distribution box 12, thereby realizing the screening of plastic granules of different densities and sizes.

[0029] The working principle and usage process of this utility model are as follows: Plastic granules are placed on conveyor belt 1. After the conveyor belt 1 is started, it is driven by a motor to transport the plastic granules from the left side to the right of the device, preparing for the subsequent drying and sorting process. When the plastic granules enter the drying chamber 3 with the conveyor belt 1, motor 5 is started. Motor 5 drives the threaded rod 6 to rotate. The slide plate 7 will move back and forth in a straight line in the horizontal direction under the drive of the threaded rod 6. As the slide plate 7 moves, the agitator teeth 8 will continuously turn the plastic granules on the conveyor belt 1, so that the plastic granules can be fully exposed to the drying environment. At the same time, the heating plate 10 is energized and heats up. The heat is transferred in the drying chamber 3 to dry the plastic granules turned by the agitator teeth 8. When the dried plastic granules enter the L-shaped channel above the distribution box 12 from the right side of the conveyor belt 1, the second motor 15 starts and drives the rotating shaft 16 to rotate. The multiple blades 17 on the rotating shaft 16 rotate at high speed. The blades 17 rotate at high speed in the air box 13, which quickly agitates the air and generates a high-speed airflow. Under the action of the high-speed airflow, plastic granules of different densities and sizes will exhibit different motion states. The lighter plastic granules will be blown upward by the airflow and eventually discharged from the debris outlet 19. The heavier plastic granules, due to their greater weight and inertia, are less affected by the airflow and will fall downward under the action of gravity and be collected through the collection port 20 at the bottom of the distribution box 12.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plastic particle screening device based on airflow separation, characterized in that: The device includes a conveyor belt (1), with limit strips (2) fixedly connected to the front and rear sides of the conveyor belt (1), a drying chamber (3) at the top of the conveyor belt (1), a support plate (4) fixedly connected to the front side of the drying chamber (3), a motor (5) fixedly connected to the top of the support plate (4), a threaded rod (6) fixedly connected to the drive end of the motor (5), a sliding plate (7) connected to the external thread of the threaded rod (6), a plurality of actuating teeth (8) fixedly connected to the bottom end of the sliding plate (7), a sliding groove (9) opened inside the left and right sides of the drying chamber (3), a heating plate (10) fixedly connected inside the top of the drying chamber (3), a plurality of support legs (11) fixedly connected to the bottom end of the drying chamber (3), and a sorting component on the right side of the conveyor belt (1).

2. The plastic particle screening device based on airflow sorting according to claim 1, characterized in that: The sorting assembly includes a sorting box (12), a bellows (13) is fixedly connected to the top of the sorting box (12), a fixing block (14) is fixedly connected to the front side of the bellows (13), a second motor (15) is fixedly connected to the top of the fixing block (14), a rotating shaft (16) is fixedly connected to the drive end of the second motor (15), a plurality of blades (17) are fixedly connected to the outside of the rotating shaft (16), an L-shaped channel (18) is fixedly connected to the inside of the top of the sorting box (12), a debris outlet (19) is fixedly connected to the right side of the bellows (13), and a collection port (20) is fixedly connected to the bottom of the sorting box (12).

3. The plastic particle screening device based on airflow sorting according to claim 1, characterized in that: The outer surfaces of the plurality of actuating teeth (8) are in contact with the adjacent sides of the two limiting strips (2), and the bottom ends of the plurality of actuating teeth (8) are in contact with the top end of the conveyor belt (1).

4. The plastic particle screening device based on airflow sorting according to claim 1, characterized in that: The front and rear sides of the threaded rod (6) are rotatably connected to the inner walls of the front and rear sides of the drying oven (3), and the left and right sides of the sliding plate (7) are slidably connected to the inner walls of the left and right sides of the drying oven (3).

5. A plastic particle screening device based on airflow sorting according to claim 1, characterized in that: The top of the heating plate (10) is fixedly connected to the inner wall of the top of the drying oven (3).

6. A plastic particle screening device based on airflow sorting according to claim 2, characterized in that: The bottom end of the bellows (13) is fixedly connected to the top end of the material distribution box (12), and the top end of the L-shaped channel (18) is fixedly connected to the inner wall of the top end of the material distribution box (12).

7. A plastic particle screening device based on airflow sorting according to claim 2, characterized in that: The left side of the debris outlet (19) is fixedly connected to the right side of the bellows (13).

Images