A plastic screening and impurity removal device

Abstract

This application relates to a plastic screening and impurity removal device, comprising: a vibrating screen body with multiple discharge ends, one discharge end for discharging plastic granules and the remaining discharge ends for discharging impurities; an impurity removal assembly connected to the frame of the vibrating screen body, the impurity removal assembly including: an impurity removal roller rotatably connected to the frame of the vibrating screen body and mounted above the discharge end for discharging plastic granules; multiple impurity removal plates arranged circumferentially along the impurity removal roller and fixedly connected to it; multiple electromagnets corresponding to the impurity removal plates, and the electromagnets being fitted and fixed to their respective impurity removal plates; a discharge plate connected to the frame of the vibrating screen body to collect impurities falling from the impurity removal plates; and an opening and closing assembly for controlling the opening and closing of the electromagnets on the frame of the vibrating screen body. The arrangement of the electromagnets and the control assembly aims to prevent impurities mixed in with the plastic granules from affecting the quality of the plastic.

Description

Technical Field

[0001] This application relates to the technical field of plastic pellet processing, and in particular to a plastic screening and impurity removal device. Background Technology

[0002] Plastic products are various man-made items made by mixing plastic granules with other additives and then melting and extruding them. Because plastic products are difficult to degrade, in order to protect the environment, some plastic products are recycled and crushed back into plastic granules. These granules are then processed through screening, washing, melting, and re-granulation to be made into new man-made items that return to people's lives. However, the recycled and crushed plastic granules often contain impurities such as metal particles, which affect the melting and granulation of the plastic.

[0003] A Chinese patent with related technical announcement number CN222290717U discloses a plastic particle screening device, which includes a base plate, guide rods, a fixing block, a motor, and a rotating frame. Multiple guide rods are connected to the upper sides of both the left and right sides of the base plate. The fixing block is connected to the upper front side of the base plate, and the motor is connected to the upper rear side of the base plate. The rotating frame is rotatably connected to the fixing block, and the rotating frame is connected to the output shaft of the motor. This invention uses a sliding second sliding frame, fixed by a limiting rod at a corresponding height, to increase or decrease the stroke of the top pressure frame's top pressure guide rail. This allows for control of the vibration amplitude of the vibrating plate according to the screening requirements of different plastic particles, improving the adaptability of the screening operation.

[0004] The device in the above scheme mainly screens and removes larger impurity particles in plastic granules. However, smaller impurities such as metal particles mixed in the plastic granules will still enter the melt granulation process with the plastic granules, resulting in impurities in the plastic affecting the quality of the plastic. Utility Model Content

[0005] In order to improve the problem of impurities affecting the quality of plastics, this application provides a plastic screening and impurity removal device.

[0006] This application provides a plastic screening and impurity removal device, which adopts the following technical solution:

[0007] A plastic screening and impurity removal device, comprising:

[0008] The vibrating screen body has multiple discharge ends, one of which is used for discharging plastic granules, and the other discharge ends are used for discharging impurities.

[0009] A waste removal assembly, connected to the frame of the vibrating screen body, includes:

[0010] The impurity removal roller is rotatably connected to the frame of the vibrating screen body and is mounted above the discharge end of the plastic granules.

[0011] Multiple impurity removal plates are provided, and the multiple impurity removal plates are arranged around the impurity removal roller and fixedly connected to the impurity removal roller.

[0012] Multiple electromagnets are provided, and each one is corresponding to a cleaning plate. The electromagnets are fitted and fixed to the corresponding cleaning plates.

[0013] The discharge plate is connected to the frame of the vibrating screen body to catch impurities falling from the impurity removal plate;

[0014] The frame of the vibrating screen body is equipped with an opening and closing assembly for controlling the opening and closing of the electromagnet.

[0015] Furthermore, the opening and closing assembly includes an infrared sensor for detecting the position of the impurity removal plate and is electrically connected to the controller of the electromagnet.

[0016] Furthermore, the impurity removal component also includes:

[0017] The impurity removal cylinder is rotatably connected to the frame of the vibrating screen body, and the rotation axis of the impurity removal cylinder is spaced apart from the rotation axis of the impurity removal roller. The impurity removal cylinder is provided with impurity removal holes for the impurity removal plate to pass through or out. The discharge plate is located on the side of the axis of the impurity removal cylinder away from the impurity removal roller.

[0018] Furthermore, the discharge plate includes:

[0019] The discharge section is fixedly connected to the frame.

[0020] The material guide section is slidably connected to the frame of the vibrating screen body along the direction close to or away from the impurity removal roller, and the side of the material guide section away from the ground can extend to below the impurity removal plate. The frame is provided with a moving component for driving the material guide section to reciprocate.

[0021] Furthermore, the moving components are provided in two sets, and the two sets of moving components are respectively located on both sides of the discharge plate.

[0022] Furthermore, the moving component includes:

[0023] The movable gear is fixedly connected coaxially to the impurity removal cylinder;

[0024] The transmission gear is rotatably connected to the frame and meshes with the moving gear;

[0025] The movable rod has one end rotatably connected to the transmission gear, and the rotation axis of the movable rod and the transmission gear is spaced apart from the axis of the transmission gear. The other end of the movable rod is rotatably connected to the guide section.

[0026] Furthermore, the impurity removal cylinder is rotatably connected to multiple pusher plates, which are grouped in pairs. Two pusher plates in the same group are located on opposite sides of the impurity removal hole. One side of the pusher plate is fixedly connected to the impurity removal cylinder, and the other side abuts against the corresponding side of the impurity removal plate. The impurity removal cylinder is provided with an adjusting component for adjusting the rotation angle of the pusher plates.

[0027] Furthermore, the adjusting component includes an adjusting torsion spring, one end of which is fixedly connected to the pusher plate and the other end of which is fixedly connected to the impurity removal cylinder. Under the action of the adjusting torsion spring, the free end of the pusher plate abuts against the corresponding side of the impurity removal plate.

[0028] In summary, the beneficial technical effects of this application are as follows:

[0029] 1. The electromagnet and control components are designed so that after the electromagnet adsorbs metallic impurities in the plastic granules, the operator can adjust the control components to de-energize the electromagnet and drop the adsorbed impurities onto the discharge plate, thereby removing impurities from the plastic granules and ensuring that impurities do not easily affect the quality of the plastic. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is a partial cross-sectional view of an embodiment of this application;

[0032] Figure 3 yes Figure 2 A magnified view of part A in the diagram.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Vibrating screen body; 11. Screen mesh; 12. Frame; 121. Slide chute; 2. Impurity removal assembly; 21. Impurity removal roller; 22. Impurity removal plate; 24. Discharge plate; 241. Discharge section; 242. Guide section; 243. Sliding block; 25. Impurity removal cylinder; 251. Pusher plate; 3. Moving assembly; 31. Moving gear; 32. Transmission gear; 33. Moving rod. Detailed Implementation

[0035] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] This application discloses a plastic screening and impurity removal device. (Refer to...) Figure 1 and Figure 2The plastic screening and impurity removal device includes a vibrating screen body 1 and an impurity removal component 2.

[0037] Reference Figure 2 and Figure 3 The frame 12 of the vibrating screen body 1 is mounted on the ground. Multiple screens 11 are provided on the vibrating screen body 1. In this embodiment, two screens 11 are provided to form three discharge ends on the vibrating screen body 1. The two screens 11 are arranged sequentially along the direction close to the ground. The screen 11 furthest from the ground is used to remove larger impurities from the plastic granules, and a large particle impurity discharge end is formed above this screen 11. The screen 11 closest to the ground is used to remove smaller impurities from the plastic granules, and a plastic granule discharge end is formed above this screen 11, while a small particle impurity discharge end is formed below this screen 11.

[0038] The impurity removal assembly 2 includes an impurity removal roller 21, impurity removal plates 22, an electromagnet, a discharge plate 24, and an impurity removal cylinder 25. The impurity removal roller 21 is rotatably connected to the frame 12 of the vibrating screen body 1, and is located between two screens 11 and above the discharge end of the plastic granules. A drive motor is fixedly connected to the frame 12 of the vibrating screen body 1, and the output shaft of the drive motor is fixedly connected to the impurity removal roller 21 to drive the impurity removal roller 21 to rotate. Multiple impurity removal plates 22 are provided. In this embodiment, five impurity removal plates 22 are provided. The five impurity removal plates 22 are evenly distributed around the circumference of the impurity removal roller 21 and are fixedly connected to the outer peripheral wall of the impurity removal roller 21. The impurity removal cylinder 25 is rotatably connected to the frame 12 of the vibrating screen body 1 and is sleeved on the outside of the impurity removal roller 21. The rotation axis of the impurity removal cylinder 25 is spaced apart from the rotation axis of the impurity removal roller 21. The impurity removal cylinder 25 has impurity removal holes for the impurity removal plates 22 to pass through or exit. Multiple electromagnets are provided, and each electromagnet corresponds to a cleaning plate 22. The electromagnets are fitted and fixed to the corresponding cleaning plates 22. The frame 12 of the vibrating screen body 1 is provided with an opening and closing assembly for controlling the opening and closing of the electromagnets.

[0039] The opening and closing assembly includes an infrared sensor, which is used to detect the position of the impurity removal plate 22. The transmitting end and receiving end of the infrared sensor are respectively located on both sides of the impurity removal plate 22, and the infrared sensor is fixedly connected to the frame 12 of the vibrating screen body 1 and electrically connected to the controller of the electromagnet.

[0040] The discharge plate 24 is located on the side of the impurity removal cylinder 25 away from the impurity removal roller 21, and along the rotation direction of the impurity removal roller 21. The impurity removal plate 22 first adsorbs the metal particles in the plastic granules, and then rotates to the top of the discharge plate 24 so that the impurities on the impurity removal plate 22 can fall onto the discharge plate 24. The discharge plate 24 includes a discharge section 241 and a guide section 242. The discharge section 241 is fixedly connected to the frame 12. In this embodiment, the discharge section 241 is bolted to the frame 12. The frame 12 has a sliding groove 121 along the length of the screen 11. A slider 243 adapted to slide along the sliding groove 121 is fixedly connected to the guide section 242. The guide section 242 is inclined towards the ground in the direction away from the feeding end of the vibrating screen body 1. The side of the guide section 242 away from the ground extends to the bottom of the impurity removal plate 22 to receive the impurities falling from the impurity removal plate 22. The guide section 242 and the discharge section 241 can contact the side wall away from the ground. The frame 12 is equipped with a moving component 3 for driving the guide section 242 to move back and forth.

[0041] The moving component 3 includes a moving gear 31, a transmission gear 32, and a moving rod 33. The number of teeth on the moving gear 31 is five times the number of teeth on the transmission gear 32. The moving gear 31 is coaxially and fixedly connected to the impurity removal cylinder 25. The transmission gear 32 is rotatably connected to the frame 12 and meshes with the moving gear 31. One end of the moving rod 33 is rotatably connected to the transmission gear 32, and the rotation axes of the moving rod 33 and the transmission gear 32 are spaced apart from the axis of the transmission gear 32. The other end of the moving rod 33 is rotatably connected to the guide section 242.

[0042] When the impurity removal roller 21 rotates, it drives the impurity removal cylinder 25 to rotate and drives the moving gear 31 to rotate, thereby causing the transmission gear 32 to rotate and drive the moving rod 33 to move the guide plate 242 back and forth. This allows the guide plate 242 to push impurities away from the impurity removal roller 21, while also making it less likely for the guide plate 242 to interfere with the rotation of the impurity removal roller 21.

[0043] To prevent material buildup on the impurity removal plate 22, multiple pusher plates 251 are rotatably connected to the impurity removal cylinder 25. The pusher plates 251 are arranged in pairs, with the two pusher plates 251 in the same pair positioned on opposite sides of the impurity removal hole. One end of each pusher plate 25 is fixedly connected to the impurity removal cylinder 25, and the other end abuts against the corresponding side of the impurity removal plate 22. The impurity removal cylinder 25 is equipped with an adjusting element, a torsion spring, for adjusting the rotation of the pusher plates 251. One end of the torsion spring is fixedly connected to the pusher plate 251, and the other end is fixedly connected to the impurity removal cylinder 25. Under the elastic force of the torsion spring, each pusher plate 251 abuts against the corresponding side of the impurity removal plate 22.

[0044] The implementation principle of the plastic screening and impurity removal device in this application embodiment is as follows: start the drive motor to drive the impurity removal roller 21 to rotate, that is, the impurity removal plate 22 to rotate, so that the impurity removal plate 22 adsorbs the metal impurities in the plastic particles. When the impurity removal roller 21 rotates to the point where the infrared sensor detects the impurity removal plate 22, the electromagnet is de-energized, so that the impurities on the impurity removal plate 22 fall onto the discharge plate 24.

[0045] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plastic screening and impurity removal device, characterized in that, include: The vibrating screen body (1) has multiple discharge ends, one of which is used for plastic granule discharge and the other discharge ends are used for impurity discharge. A cleaning component (2) is connected to the frame (12) of the vibrating screen body (1), and the cleaning component (2) includes: The impurity removal roller (21) is rotatably connected to the frame (12) of the vibrating screen body (1) and is mounted above the discharge end of the plastic granules. Multiple impurity removal plates (22) are provided, and the multiple impurity removal plates (22) are arranged circumferentially along the impurity removal roller (21) and fixedly connected to the impurity removal roller (21); Multiple electromagnets are provided, and each one is corresponding to a cleaning plate (22), and the electromagnets are fitted and fixed to the corresponding cleaning plates (22); The discharge plate (24) is connected to the frame (12) of the vibrating screen body (1) to receive impurities falling from the impurity removal plate (22); The frame (12) of the vibrating screen body (1) is provided with an opening and closing assembly for controlling the opening and closing of the electromagnet.

2. The plastic screening and impurity removal device according to claim 1, characterized in that, The opening and closing assembly includes an infrared sensor, which is used to detect the position of the impurity removal plate (22) and is electrically connected to the controller of the electromagnet.

3. The plastic screening and impurity removal device according to claim 1, characterized in that, The impurity removal component (2) also includes: The impurity removal cylinder (25) is rotatably connected to the frame (12) of the vibrating screen body (1), and the rotation axis of the impurity removal cylinder (25) is spaced apart from the rotation axis of the impurity removal roller (21). The impurity removal cylinder (25) is provided with impurity removal holes for the impurity removal plate (22) to pass through or out. The discharge plate (24) is located on the side of the axis of the impurity removal cylinder (25) away from the impurity removal roller (21).

4. The plastic screening and impurity removal device according to claim 3, characterized in that, The discharge plate (24) includes: The discharge section (241) is fixedly connected to the frame (12); The guide section (242) is slidably connected to the frame (12) of the vibrating screen body (1) in a direction close to or away from the impurity removal roller (21), and the side of the guide section (242) away from the ground can extend to the bottom of the impurity removal plate (22). The frame (12) is provided with a moving component (3) for driving the guide section (242) to move back and forth.

5. A plastic screening and impurity removal device according to claim 4, characterized in that, The moving component (3) is provided in two sets, and the two sets of moving components (3) are respectively located on both sides of the discharge plate (24).

6. The plastic screening and impurity removal device according to claim 4, characterized in that, The moving component (3) includes: The movable gear (31) is coaxially and fixedly connected to the impurity removal cylinder (25); The transmission gear (32) is rotatably connected to the frame (12) and meshes with the moving gear (31); The movable rod (33) is rotatably connected to the transmission gear (32) at one end, and the rotation axis of the movable rod (33) and the transmission gear (32) are spaced apart from the axis of the transmission gear (32). The other end of the movable rod (33) is rotatably connected to the guide section (242).

7. A plastic screening and impurity removal device according to claim 3, characterized in that, Multiple pusher plates (251) are rotatably connected to the impurity removal cylinder (25). The multiple pusher plates (251) are in pairs, and the two pusher plates (251) in the same group are respectively located on both sides of the impurity removal hole. One side of the pusher plate (251) is fixedly connected to the impurity removal cylinder (25), and the other side abuts against the corresponding side of the impurity removal plate (22). The impurity removal cylinder (25) is provided with an adjusting member for adjusting the rotation angle of the pusher plate (251).

8. A plastic screening and impurity removal device according to claim 7, characterized in that, The adjusting component includes an adjusting torsion spring. One end of the adjusting torsion spring is fixedly connected to the pusher plate (251), and the other end is fixedly connected to the impurity removal cylinder (25). Under the action of the adjusting torsion spring, the free end of the pusher plate (251) abuts against the corresponding side of the impurity removal plate (22).

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