A plastic production screening device
By combining bidirectional motion tumbling and high-pressure gas cleaning, the problem of limited material contact opportunities and clogging in existing plastic production screening devices is solved, achieving a more efficient screening effect and rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG SHUNDE SHUNYAN NEW MATERIALS
- Filing Date
- 2025-08-06
- Publication Date
- 2026-06-30
AI Technical Summary
Existing plastic production screening devices have limited opportunities for material to contact the screen during vibrating screening, resulting in low screening speed and easy clogging. In particular, when a large amount of material is fed in, the upper layer of material is blocked by the lower layer, affecting the screening effect.
The screening method employs bidirectional motion. The electric motor drives the rotating column and pulley to move the screening cylinder and the hollow rotating rod tipping plate to turn the material. Combined with high-pressure gas cleaning of the screen holes, it ensures uniform material distribution and thorough cleaning, preventing blockage.
It achieves full dispersion and uniform distribution of materials, improves screening rate, reduces screen clogging, and ensures thorough and efficient screening effect.
Smart Images
Figure CN224426118U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of modified material screening technology, specifically a screening device for plastic production. Background Technology
[0002] PA modified materials refer to plastic materials that are modified based on polyamide through physical, chemical or mechanical methods to improve their performance or give them new functions. When processing modified plastic solid particles, screening devices are needed to screen and classify particles of different sizes.
[0003] Most existing plastic production screening devices use vibrating screens to screen modified material particles. When screening modified plastic particles, the plastic particles to be screened are first fed into the screening box through the feed hopper and fall onto the screen inside the screening box. With the cooperation of the vibration mechanism, the screen shakes back and forth. Smaller plastic particles fall through the screen holes to the bottom of the screening box, while larger plastic particles are intercepted on the screen, thus realizing the screening, separation and classification of plastic particles.
[0004] Existing plastic production screening devices mostly use vibrating screens to screen modified material particles. Vibrating screens mainly rely on the up-and-down vibration of the screen mesh to achieve screening. The movement of materials on the screen mesh is relatively simple, and the vibrating screen can only effectively screen the material at the bottom. This results in limited contact between the material and the screen mesh. If a large amount of material is initially added to the vibrating screen, the material at the bottom will block the material at the top, resulting in screening only layer by layer and affecting the screening rate. Therefore, a plastic production screening device is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background, this utility model proposes a plastic production screening device.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A plastic production screening device of this utility model includes an outer cylinder, a screening cylinder rotatably installed inside the outer cylinder, toothed rings fitted at both ends of the screening cylinder, two fixed frames fixed to the top of the circumferential surface of the outer cylinder, and a rotating column rotatably installed on the two fixed frames. Gears are fitted at both ends of the rotating column, and the gears are located inside the fixed frames, meshing with the toothed rings. A motor is installed on one side wall of one of the fixed frames, and the output end of the motor is connected to one end of the rotating column. A first pulley is fitted at the end of the rotating column away from the motor. A hollow rotating rod is rotatably installed inside the screening cylinder, and a second pulley is fitted at one end of the hollow rotating rod. A conveyor belt is fitted on the first and second pulleys. Multiple turning plates are fixed to the outer surface of the hollow rotating rod, and a scraper is connected to the hollow rotating rod. An air outlet is opened at the end of the scraper. When screening modified plastic granules, an electric motor drives a rotating column, which in turn rotates the gears and the first pulley. This, in conjunction with the gear ring, forces the screening cylinder to rotate, thus screening the modified plastics. Simultaneously, a conveyor belt rotates the second pulley, which in turn drives the hollow rotating rod to rotate the tilting plate and scraper. This continuously tumbles and throws the material within the screening cylinder. Since the screening cylinder and the hollow rotating rod rotate in opposite directions, the tilting plate throws the plastic granules in the opposite direction of the cylinder's rotation. This bidirectional motion increases the disturbance to the material during screening, enhancing contact between the material and the screen, effectively dispersing the material and ensuring its even distribution within the screening cylinder. This effectively prevents localized accumulation of material, reduces screen clogging, and allows smaller particles to pass through the screen more easily, while larger particles remain inside the cylinder, resulting in a more thorough screening effect and significantly increasing the screening rate.
[0007] Preferably, an air pump is installed on the top side of a fixed frame. The air pump's input port is connected to an air inlet pipe, and its output port is connected to an air delivery pipe. The other end of the air delivery pipe is rotatably connected to the port of the hollow rotating rod. To prevent clogging of the screen holes, the screening cylinder needs to be cleaned. The motor drives the rotating column to rotate the first pulley, which, with the help of the conveyor belt, forces the second pulley to rotate. This causes the hollow rotating rod to drive the scraper to rotate along the inner wall of the screening cylinder, thereby scraping and cleaning the inside of the screening cylinder. At the same time, the air pump is started, and high-pressure gas is sprayed out through the air outlet at the end of the scraper, which can penetrate deep into the screen holes and blow away the fine particles that are difficult to scrape off. Through the synergistic effect of scraping and blowing, the screening cylinder is thoroughly cleaned, effectively preventing clogging and ensuring the subsequent screening effect.
[0008] Preferably, two support seats are fixedly connected to the bottom of the outer cylinder, and a collection box is fixedly connected between the two support seats. A discharge port is opened at the bottom of the circumferential surface of the outer cylinder, and the collection box is located directly below the discharge port. One end of the screening cylinder is connected to a material pipe, and a sealing cap is movably fitted at the end of the material pipe. During the screening process, small particles fall into the outer cylinder through the screen holes and into the collection box through the discharge port. After screening, the sealing cap is removed, allowing the large particles intercepted in the screening cylinder to be taken out through the material pipe, thereby realizing the classified collection of plastic particles.
[0009] Preferably, a control panel is installed on the side wall of one of the support bases, and the control panel is used to control the start and stop of the motor and the air pump. When using the device, by setting the control panel, the start and stop control of multiple drive devices can be integrated on one panel, and the operator can centrally control the key components of the entire device from one position, simplifying the operation process.
[0010] The advantages of this utility model are:
[0011] 1. In the screening of modified plastic granules, this utility model uses an electric motor to drive a rotating column, which in turn drives a gear and a first pulley to rotate. With the help of a gear ring, this forces the screening cylinder to rotate, thus screening the modified plastic. Simultaneously, with the help of a conveyor belt, a second pulley rotates, which in turn drives a hollow rotating rod to rotate a turning plate and a scraper. This continuously turns and throws the material inside the screening cylinder. Since the screening cylinder and the hollow rotating rod rotate in opposite directions, the turning plate throws the plastic granules in the opposite direction to the rotation of the screening cylinder. This bidirectional motion causes more disturbance to the material during screening, increasing the contact between the material and the screen, effectively dispersing the material and distributing it evenly within the screening cylinder. This effectively prevents localized accumulation of material within the screening cylinder, reduces screen clogging, and allows small particles to pass through the screen more easily, while larger particles remain inside the screening cylinder, achieving a more thorough screening effect and greatly improving the screening rate.
[0012] 2. To avoid clogging of the screen holes, this utility model requires cleaning of the screening cylinder. An electric motor drives a rotating column, which in turn rotates the first pulley. With the assistance of a conveyor belt, this forces the second pulley to rotate, causing the hollow rotating rod to rotate the scraper along the inner wall of the screening cylinder. This effectively scrapes and cleans the inside of the screening cylinder. Simultaneously, an air pump is activated, spraying high-pressure gas through the outlet at the end of the scraper. This gas penetrates deep into the screen holes, blowing away even the smallest, hard-to-scrape particles. Through the combined action of scraping and blowing, the screening cylinder is thoroughly cleaned, effectively preventing clogging and ensuring optimal subsequent screening results. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a first side view of the overall three-dimensional structure of the device;
[0015] Figure 2 This is a schematic diagram of the overall second side view of the three-dimensional structure of the device;
[0016] Figure 3 A cross-sectional three-dimensional structural diagram of the outer cylinder and the screening cylinder;
[0017] Figure 4 A cross-sectional view of the outer cylinder and the screening cylinder is shown in the structural schematic diagram.
[0018] Figure 5 A schematic diagram of the three-dimensional structure of the cleaning mechanism;
[0019] In the diagram: 1. Outer cylinder; 2. Screening cylinder; 3. Gear ring; 4. Fixing frame; 5. Rotating column; 6. Gear; 7. Motor; 8. Cavity rotating rod; 9. Tilting plate; 10. Scraper; 11. First pulley; 12. Second pulley; 13. Conveyor belt; 14. Air pump; 15. Air inlet pipe; 16. Air delivery pipe; 17. Material pipe; 18. Sealing cover; 19. Discharge port; 20. Collection box; 21. Support base; 22. Control panel. 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 scope of protection of the present utility model.
[0021] Please see Figure 1-5As shown, a plastic production screening device includes an outer cylinder 1, a screening cylinder 2 rotatably mounted inside the outer cylinder 1, and toothed rings 3 fitted at both ends of the screening cylinder 2. Two fixed frames 4 are fixedly connected to the top of the circumferential surface of the outer cylinder 1, and a rotating column 5 is rotatably mounted on the two fixed frames 4. Gears 6 are fitted at both ends of the rotating column 5 and are located inside the fixed frames 4, meshing with the toothed rings 3. A motor 7 is mounted on one side wall of one of the fixed frames 4, and the output end of the motor 7 is connected to one end of the rotating column 5. The end of the rotating column 5 away from the motor 7 is fitted with a toothed ring 3. The sieve cylinder 2 has a first pulley 11 and a hollow rotating rod 8 rotatably mounted inside it. A second pulley 12 is fitted onto one end of the hollow rotating rod 8. A conveyor belt 13 is fitted onto the first pulley 11 and the second pulley 12. Multiple turning plates 9 are fixed to the outer surface of the hollow rotating rod 8. A scraper 10 is connected to the hollow rotating rod 8, and an air outlet is opened at the end of the scraper 10. A material pipe 17 is connected to one end of the sieve cylinder 2, and a sealing cap 18 is movably fitted at the end of the material pipe 17. During operation, when screening modified plastic granules, the sealing cap 18 is first removed from the material pipe 17. Next, the material to be screened is fed into the screening cylinder 2 through the feed pipe 17, and then the sealing cover 18 re-seals the feed pipe 17. Then, the motor 7 is started, causing the rotating column 5 to drive the gear 6 and the first pulley 11 to rotate. With the cooperation of the gear ring 3, the screening cylinder 2 is forced to rotate, thus enabling the screening of modified plastics. Simultaneously, with the cooperation of the conveyor belt 13, the second pulley 12 rotates, which in turn causes the hollow rotating rod 8 to drive the turning plate 9 and the scraper 10 to rotate, thereby continuously turning and agitating the material inside the screening cylinder 2. The screening cylinder 2 and the hollow... The rotating rod 8 rotates in the opposite direction, causing the flipping plate 9 to flip and throw the plastic particles in the opposite direction to the rotation of the screening cylinder 2. This bidirectional motion causes more disturbance to the material during screening, increases the contact opportunity between the material and the screen, and can fully disperse the material and distribute it evenly in the screening cylinder 2. This can effectively prevent the material from accumulating locally in the screening cylinder 2, reduce the clogging of the screen holes, make it easier for small particles to pass through the screen holes, and leave large particles in the screening cylinder 2, thereby achieving a more thorough screening effect and greatly improving the screening rate.
[0022] An air pump 14 is mounted on the top side of a fixed frame 4. An air inlet pipe 15 is connected to the inlet port of the air pump 14, and an air delivery pipe 16 is connected to the outlet port of the air pump 14. The other end of the air delivery pipe 16 is rotatably connected to the port of the hollow rotating rod 8. During operation, after the screening process is completed, the screening cylinder 2 needs to be cleaned to prevent clogging of the screen holes. The motor 7 operates, causing the rotating column 5 to drive the first pulley 11 to rotate. With the cooperation of the conveyor belt 13, the second pulley 12 is forced to rotate, thus... The hollow rotating rod 8 drives the scraper 10 to rotate along the inner wall of the screening cylinder 2, thereby scraping and cleaning the inside of the screening cylinder 2. At the same time, the air pump 14 is started, so that high-pressure gas flows into the hollow rotating rod 8 through the air supply pipe 16 and is finally sprayed out through the air outlet at the end of the scraper 10. The high-pressure gas can penetrate into the screen holes and blow away the fine particles that are difficult to scrape away. Through the synergistic effect of scraping and blowing, the screening cylinder 2 is thoroughly cleaned, effectively preventing blockage and ensuring the subsequent screening effect.
[0023] Please see Figure 1-2 As shown, two support seats 21 are fixed to the bottom of the outer cylinder 1, and a collection box 20 is fixed between the two support seats 21. A discharge port 19 is opened at the bottom of the circumferential surface of the outer cylinder 1, and the collection box 20 is located directly below the discharge port 19. During operation, during the screening process, small particles fall into the outer cylinder 1 through the screen holes and into the collection box 20 through the discharge port 19. After screening, when discharging, the material pipe 17 is located below. The sealing cover 18 is removed, allowing the large particles intercepted in the screening cylinder 2 to be taken out through the material pipe 17, thereby realizing the classified collection of plastic particles.
[0024] A control panel 22 is installed on the side wall of a support base 21, and the control panel 22 is used to control the start and stop of the motor 7 and the air pump 14. When the device is in operation, by setting the control panel 22, the start and stop control of multiple drive devices can be integrated on one panel, and the operator can centrally control the key components of the entire device from one position, simplifying the operation process.
[0025] Working Principle: Existing plastic production screening devices mostly use vibrating screens to screen modified material granules. Vibrating screens primarily rely on the up-and-down vibration of the screen mesh for screening. The material movement on the screen mesh is relatively limited, and the vibrating screen can only effectively screen the lower layer of material, resulting in limited contact between the material and the screen mesh. If a large amount of material is initially added to the vibrating screen, the lower layer will obstruct the upper layer, forcing screening to be done layer by layer, thus affecting the screening rate. Therefore, to address these issues, a new plastic production screening device is proposed. When screening modified plastic granules, the sealing cap 18 is first removed from the feed pipe 17. During feeding, the feed pipe 17 is positioned at the top. After the material to be screened is fed into the screening cylinder 2 through the feed pipe 17, the sealing cap 18 re-seals the feed pipe 17. Then, the motor 7 is started, causing the rotating column 5 to drive the gear 6 and the first pulley 11 to rotate. The rotating gear, in conjunction with the toothed ring 3, forces the screening cylinder 2 to rotate, thereby enabling the screening of modified plastics. Simultaneously, in conjunction with the conveyor belt 13, the second pulley 12 rotates, which in turn causes the cavity rotating rod 8 to drive the turning plate 9 and scraper 10 to rotate, thus continuously turning and throwing the material in the screening cylinder 2. Moreover, the rotation directions of the screening cylinder 2 and the cavity rotating rod 8 are opposite, causing the turning plate 9 to turn and throw the plastic particles in the opposite direction of the rotation direction of the screening cylinder 2. This bidirectional motion mode causes more disturbance to the material during the screening process, increases the contact opportunity between the material and the screen, and can fully disperse the material, evenly distributing the material in the screening cylinder 2. It can effectively avoid local accumulation of material in the screening cylinder 2, reduce the clogging of the screen holes, make it easier for small particles to pass through the screen holes, and leave large particles in the screening cylinder 2, thereby achieving a more thorough screening effect and greatly improving the screening rate.
[0026] During the screening process, small particles fall through the screen holes into the outer cylinder 1 and through the discharge port 19 into the collection box 20. After screening, when discharging, the material pipe 17 is located below. The sealing cover 18 is removed so that the large particles intercepted in the screening cylinder 2 can be taken out through the material pipe 17, thereby realizing the classification and collection of plastic particles.
[0027] After the screening operation is completed, in order to avoid clogging of the screen holes, the screening cylinder 2 needs to be cleaned. The motor 7 drives the rotating column 5 to rotate the first pulley 11. With the cooperation of the conveyor belt 13, the second pulley 12 is forced to rotate, which in turn causes the cavity rotating rod 8 to drive the scraper 10 to rotate along the inner wall of the screening cylinder 2, thereby scraping and cleaning the inside of the screening cylinder 2. At the same time, the air pump 14 is started, so that high-pressure gas flows into the cavity rotating rod 8 through the air supply pipe 16 and is finally sprayed out through the air outlet at the end of the scraper 10. The high-pressure gas sprayed out through the air outlet can penetrate into the screen holes and blow away the fine particles that are difficult to scrape away. Through the synergistic effect of scraping and blowing, the screening cylinder 2 is thoroughly cleaned, effectively preventing clogging and ensuring the subsequent screening effect.
[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A screening device for plastic production, characterized in that: The device includes an outer cylinder (1), inside which a screening cylinder (2) is rotatably installed. Both ends of the screening cylinder (2) are fitted with toothed rings (3). Two fixed brackets (4) are fixedly connected to the top of the circumferential surface of the outer cylinder (1). A rotating column (5) is rotatably installed on the two fixed brackets (4). Both ends of the rotating column (5) are fitted with gears (6), and the gears (6) are set inside the fixed brackets (4). The gears (6) mesh with the toothed rings (3). An electric motor (7) is installed on one side wall of one of the fixed brackets (4). The output of the electric motor (7) is... One end is connected to one end of the rotating column (5), and the end of the rotating column (5) away from the motor (7) is fitted with a first pulley (11). A cavity rotating rod (8) is rotatably installed inside the screening cylinder (2). A second pulley (12) is fitted at one end of the cavity rotating rod (8). The first pulley (11) and the second pulley (12) are fitted with a conveyor belt (13). Multiple turning plates (9) are fixed on the outer surface of the cavity rotating rod (8). A scraper (10) is connected to the cavity rotating rod (8). An air outlet is opened at the end of the scraper (10).
2. The plastic production screening device according to claim 1, characterized in that: An air pump (14) is installed on the top side of a fixed frame (4). The input port of the air pump (14) is connected to an air inlet pipe (15), and the output port of the air pump (14) is connected to an air delivery pipe (16). The other end of the air delivery pipe (16) is rotatably connected to the port of the cavity rotating rod (8).
3. The plastic production screening device according to claim 1, characterized in that: Two support seats (21) are fixedly connected to the bottom end of the outer cylinder (1), and a collection box (20) is fixedly connected between the two support seats (21).
4. A plastic production screening device according to claim 1, characterized in that: The outer cylinder (1) has a discharge port (19) at the bottom of its circumferential surface, and the collection box (20) is located directly below the discharge port (19).
5. A plastic production screening device according to claim 1, characterized in that: One end of the screening cylinder (2) is connected to a material pipe (17), and a sealing cap (18) is movably fitted at the port of the material pipe (17).
6. A plastic production screening device according to claim 3, characterized in that: A control panel (22) is installed on the side wall of the support base (21), and the control panel (22) is used to control the start and stop of the motor (7) and the air pump (14).