A screening and sorting device for plastic particles

Abstract

The utility model relates to the technical field of screening sorting device, and disclose a kind of screening sorting device for plastic particles, it includes rack, the inside of the rack is connected with sieve frame by swing seat rotation, sieve frame interior is equipped with screen rack, sieve frame is divided into two layers by screen rack, the lower end of the end of sieve frame is connected with lower material discharge groove, the end of sieve frame is connected with upper material discharge groove;The utility model simplifies power system, cost is low energy consumption, adopt single motor linkage feeding and sieve frame swing mechanism, without multiple groups of driving motor, equipment manufacturing cost is reduced, energy consumption is reduced, and transmission structure adopts synchronous belt, stable operation, maintenance cost is low;The novel has realized uniform feeding, screening efficiency is high, by the cooperation of pivot and poking rod, realize material delivery, avoid feeding accumulation, reciprocating swing design of sieve frame makes particle tumble fully, screening efficiency is high, and separation is thorough, improve screening precision.

Description

Technical Field

[0001] This utility model belongs to the technical field of screening and sorting devices, specifically a screening and sorting device for plastic particles. Background Technology

[0002] In the plastics processing industry, the uniformity of plastic particle size directly affects the molding quality and performance of subsequent products. Currently, most common plastic particle screening and sorting devices on the market suffer from the following problems:

[0003] 1. Complex power structure: Some multi-functional screening devices need to be equipped with multiple sets of drive motors to control functions such as feeding, screening, and dust removal, which not only increases the manufacturing cost and energy consumption of the equipment, but also increases the probability of equipment failure, and significantly increases the difficulty and cost of later maintenance.

[0004] 2. Uneven feeding: Traditional devices often use direct feeding, which can easily lead to material accumulation in certain areas of the screen, resulting in low screen utilization, excessive wear in some areas, and also affecting screening efficiency due to excessive material thickness, causing "screen blockage" or material accumulation in the feeding hopper.

[0005] 3. Severe dust pollution: Dust is easily generated during the handling, feeding and screening of plastic granules. Traditional equipment lacks an effective dust collection structure. Dust spreads into the working environment, which not only endangers the health of operators, but may also affect the cleanliness of plastic granules and does not meet environmental protection production standards.

[0006] To address the shortcomings of the existing technology, this utility model proposes a screening and sorting device for plastic granules. By optimizing the feeding structure, improving the screening drive method, adding a dust collection system, and adopting a single-motor linkage multi-mechanism design, it effectively solves problems such as uneven feeding, inefficient screening, dust pollution, and complex power. Utility Model Content

[0007] In view of the above situation and to overcome the defects of the prior art, this utility model provides a screening and sorting device for plastic particles, which effectively solves the problems mentioned in the background.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a screening and sorting device for plastic granules, comprising a frame, wherein a screen frame is rotatably connected to the inner side of the frame via a swing seat, a screen mesh frame is installed inside the screen frame, the screen mesh frame divides the screen frame into upper and lower layers, a lower material discharge trough is connected to the lower end of the screen frame, and an upper material discharge trough is connected to the end of the screen frame, wherein the discharge ports of the lower material discharge trough and the upper material discharge trough face the two sides of the screen frame respectively.

[0009] Preferably, the upper end of the frame is connected to a top plate, and a discharge port is opened on the upper end of the top plate near the end. The end of the discharge port is connected to a feeding hopper. A rotating shaft is rotatably connected to the lower inner side of the feeding hopper. Feeding rods are distributed around the outer circumference of the rotating shaft. One end of the rotating shaft extends to the outer side of the feeding hopper and is connected to a double-groove pulley. A first support seat is provided on the outer side of the extended end of the rotating shaft.

[0010] Preferably, a dust suction port is provided on one side of the upper end of the top plate, and a dust suction hood is connected to the upper end of the dust suction port. A connecting pipe is connected to the upper end of the dust suction hood for connecting an external dust collection device to achieve the dust collection effect.

[0011] Preferably, a base plate is connected to the lower inner side of the frame, and a motor is installed on one side of the upper end of the base plate. The output end of the motor is connected to a drive pulley, and the drive pulley and the double-groove tower pulley are connected by a first transmission belt.

[0012] Preferably, a fixed plate is connected to one end of the frame, and a second support is symmetrically installed on one side of the fixed plate. A horizontal shaft is rotatably connected inside the second support, and a driven pulley is connected to one end of the horizontal shaft. The driven pulley and the double-groove pulley are connected by a second transmission belt.

[0013] Preferably, the end of the horizontal shaft away from the driven pulley is connected to a turntable, the eccentric end of the turntable is rotatably connected to a connecting rod, one end of the connecting rod is rotatably connected to a mounting base, and the mounting base is fixedly installed on the side end of the screen frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model simplifies the power system, resulting in low cost and low energy consumption. It adopts a single motor linkage feeding and screen frame swing mechanism, eliminating the need for multiple drive motors, thus reducing equipment manufacturing costs and energy consumption. Furthermore, the transmission structure uses a synchronous belt, ensuring stable operation and low maintenance costs.

[0016] 2. This new type achieves uniform feeding and high screening efficiency. Through the cooperation of the rotating shaft and the feeding rod, the material is delivered and the material accumulation is avoided. The reciprocating swing design of the screen frame makes the particles roll fully, resulting in high screening efficiency and thorough separation, thus improving the screening accuracy.

[0017] 3. This new type of dust collection is environmentally friendly. The structure with added dust collection hood and external dust removal equipment can collect the dust generated during the screening process in real time. The dust removal rate is high, which improves the working environment and is environmentally friendly. At the same time, it improves the cleanliness of plastic particles.

[0018] 4. This new type of equipment is highly versatile and easy to operate. The screen frame is detachable, allowing for quick replacement of screens with different mesh sizes, and is suitable for screening various sizes of plastic particles. The overall structure of the equipment is simple, and the operation steps are straightforward. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0023] Figure 3 This is a schematic diagram of the installation structure of the material feeding rod of this utility model;

[0024] In the diagram: 1. Frame; 2. Swing seat; 3. Screen frame; 4. Screen mesh frame; 5. Lower material discharge chute; 6. Upper material discharge chute; 7. Top plate; 8. Feed hopper; 9. Rotary shaft; 10. Material pusher rod; 11. Double groove tower pulley; 12. First support seat; 13. Dust hood; 14. Connecting pipe; 15. Base plate; 16. Motor; 17. Drive pulley; 18. First transmission belt; 19. Fixed plate; 20. Second support seat; 21. Horizontal shaft; 22. Driven pulley; 23. Second transmission belt; 24. Turntable; 25. Connecting rod; 26. Mounting seat. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example 1, by Figures 1-3 The present invention includes a frame 1, with a screen frame 3 rotatably connected to the inner side of the frame 1 via a swing seat 2. A screen frame 4 is installed inside the screen frame 3, dividing the screen frame 3 into upper and lower layers. The screen frame 4 is detachably installed inside the screen frame 3. The mesh size of the screen frame 4 can be changed according to screening requirements, such as 10 mesh, 20 mesh, 40 mesh, etc. The screen frame 4 divides the screen frame 3 into upper and lower layers: the upper layer is the screening area for the material to be screened, and the lower layer is the collection area for small-diameter materials after screening. A lower material discharge trough 5 is connected to the lower end of the screen frame 3, corresponding to the outlet of small-diameter materials in the lower layer of the screen frame 3. An upper material discharge trough 6 is connected to the end of the screen frame 3, corresponding to the outlet of large-diameter materials in the upper layer of the screen frame 3. The discharge ports of the lower material discharge trough 5 and the upper material discharge trough 6 face the two sides of the screen frame 3 respectively, realizing the classified collection of large and small-diameter particles and preventing mixing.

[0027] A top plate 7 is connected to the upper end of the frame 1. A feeding port is opened on the upper end of the top plate 7 near the end. The end of the feeding port is connected to a feeding hopper 8 for temporarily storing the material to be screened. A rotating shaft 9 is rotatably connected to the lower inside of the feeding hopper 8. A material-pushing rod 10 is distributed around the outer circumference of the rotating shaft 9. When the rotating shaft 9 rotates, the material-pushing rod 10 can push the material in the feeding hopper 8 to the upper layer of the screen frame 3 to prevent material accumulation. One end of the rotating shaft 9 extends to the outside of the feeding hopper 8 and is connected to a double-groove pulley 11. A first support seat 12 is provided on the outside of the extended end of the rotating shaft 9 to support the rotating shaft 9 and ensure its stable rotation. A dust suction port is opened on one side of the upper end of the top plate 7. A dust suction hood 13 is connected to the upper end of the dust suction port. A connecting pipe 14 is connected to the upper end of the dust suction hood 13 for connecting external dust collection equipment to achieve dust collection effect. The connecting pipe 14 can be connected to an industrial vacuum cleaner or a central dust collection system to remove dust generated by plastic particles in real time during the screening process and prevent dust diffusion.

[0028] A base plate 15 is connected to the lower inner side of the frame 1. A motor 16 is installed on one side of the upper end of the base plate 15. The output end of the motor 16 is connected to a drive pulley 17. The drive pulley 17 and the double-groove tower pulley 11 are connected by a first transmission belt 18. A fixed plate 19 is connected to one end of the frame 1. A second support seat 20 is symmetrically installed on one side of the fixed plate 19. A horizontal shaft 21 is rotatably connected inside the second support seat 20. A driven pulley 22 is connected to one end of the horizontal shaft 21. The driven pulley 22 and the double-groove tower pulley 11 are connected by a second transmission belt 23. A turntable 24 is connected to the end of the horizontal shaft 21 away from the driven pulley 22. A connecting rod 25 is rotatably connected to the eccentric end of the turntable 24. A mounting seat 26 is rotatably connected to one end of the connecting rod 25. The mounting seat 26 is fixedly installed on the side end of the screen frame 3.

[0029] Through the above transmission structure, after the motor 16 starts, it can simultaneously drive the rotating shaft 9 to achieve feeding and material anti-blocking, and the horizontal shaft 21 drives the screen frame 3 to swing. No additional motor 16 is needed, which simplifies the power system and reduces costs and energy consumption.

[0030] Working principle:

[0031] After the motor 16 starts, its output end drives the drive pulley 17 to rotate. The drive pulley 17 transmits power to the double-groove tower pulley 11 through the first transmission belt 18 (the double-groove design can output two power sources at the same time).

[0032] One power source of the double-groove pulley 11 directly drives the rotating shaft 9 to rotate. The rotation of the rotating shaft 9 drives the material feeding rod 10 to rotate, thereby causing the material in the feed hopper 8 to be discharged in a fluctuating manner, avoiding material blockage and providing power for feeding.

[0033] The other power source of the double-groove tower pulley 11 is transmitted to the driven pulley 22 through the second transmission belt 23. The driven pulley 22 drives the horizontal shaft 21 to rotate. The horizontal shaft 21 is stably supported by the second support seat 20. The second support seat 20 is fixed on the fixed plate 19 to ensure the coaxiality of the horizontal shaft 21 and provide power for the swing of the screen frame 3.

[0034] The operator puts the plastic granules to be screened into the feed hopper 8, which is fixed at the discharge port of the top plate 7. The top plate 7 is installed on the upper part of the frame 1 to provide stable support for the feeding structure.

[0035] As the rotating shaft 9 rotates, the material-pushing rods 10 distributed around its outer circumference rotate synchronously. The material-pushing rods 10 continuously push the material inside the feed hopper 8, evenly dispersing the accumulated particles and continuously conveying them to the upper layer of the screen frame 3 below. The screen frame 3 is rotatably connected to the frame 1 through the swing seat 2 and can swing freely.

[0036] In this device, the rotation speed of the feeding rod 10 is matched with the screening rhythm of the screen frame 3, so as to avoid the screen frame 4 being overloaded due to the material being fed too fast, or the screen frame 4 being idle due to the material being fed too slowly, thus ensuring screening efficiency.

[0037] When the horizontal axis 21 rotates, the turntable 24 at its end rotates synchronously. The eccentric end (non-center position) of the turntable 24 is connected to the connecting rod 25. The circular motion of the turntable 24 is converted into linear reciprocating motion through the connecting rod 25.

[0038] The other end of the connecting rod 25 is fixed to the side of the screen frame 3 through the mounting base 26. Therefore, the reciprocating motion of the connecting rod 25 drives the screen frame 3 to reciprocate around the swing seat 2.

[0039] The screen frame 4 inside the screen frame 3 divides the screen frame 3 into upper and lower layers:

[0040] Small-diameter particles: During the swinging process of the screen frame 3, the particles tumble continuously. Particles with a diameter smaller than the screen mesh size fall through the screen frame 4 into the lower layer of the screen frame 3 and are finally discharged along the lower material discharge trough 5 (connected to the lower end of the screen frame 3), thus completing the collection of small particles.

[0041] Large-diameter particles: Particles larger than the screen mesh size cannot pass through the screen frame 4. Under the action of the swinging thrust of the screen frame 3, they slide along the screen surface and are eventually discharged from the upper material discharge trough 6 (connected to the end of the screen frame 3), thus achieving the collection of large particles.

[0042] The lower material discharge trough 5 and the upper material discharge trough 6 have their ports facing the two sides of the screen frame 3, which can be directly connected to different collection containers to avoid mixing of large and small particles.

[0043] A dust suction port is provided at the top of the top plate 7, and a dust suction hood 13 is installed at the dust suction port (to expand the dust suction range). The upper end of the dust suction hood 13 is connected to the connecting pipe 14. When in use, the connecting pipe 14 is connected to an industrial vacuum cleaner or a central dust removal system. The dust above the screen frame 3 is sucked into the dust suction hood 13 by negative pressure and discharged through the connecting pipe 14 to avoid dust diffusion and environmental pollution, while ensuring particle cleanliness.

Claims

1. A screening and sorting device for plastic granules, comprising a frame (1), characterized in that: The inner side of the frame (1) is rotatably connected to the screen frame (3) via the swing seat (2). The screen frame (3) is equipped with a screen frame (4). The screen frame (4) divides the screen frame (3) into upper and lower layers. The lower end of the screen frame (3) is connected to the lower material discharge trough (5), and the upper end of the screen frame (3) is connected to the upper material discharge trough (6). The discharge ports of the lower material discharge trough (5) and the upper material discharge trough (6) face the two sides of the screen frame (3) respectively. The upper end of the frame (1) is connected to a top plate (7). A feeding port is opened on the upper end of the top plate (7) near the end. The end of the feeding port is connected to a feeding hopper (8). A rotating shaft (9) is rotatably connected to the lower inside of the feeding hopper (8). A feeding rod (10) is distributed around the outer circumference of the rotating shaft (9). One end of the rotating shaft (9) extends to the outside of the feeding hopper (8) and is connected to a double-groove tower pulley (11). A first support seat (12) is provided on the outside of the extended end of the rotating shaft (9). A dust suction port is provided on one side of the upper end of the top plate (7), and a dust suction hood (13) is connected to the upper end of the dust suction port. A connecting pipe (14) is connected to the upper end of the dust suction hood (13) for connecting external dust suction equipment to achieve the dust suction effect. The lower inner side of the frame (1) is connected to a base plate (15), and a motor (16) is installed on one side of the upper end of the base plate (15). The output end of the motor (16) is connected to a drive pulley (17), and the drive pulley (17) and the double-groove tower pulley (11) are connected by a first transmission belt (18). One end of the frame (1) is connected to a fixed plate (19), and a second support base (20) is symmetrically installed on one side of the fixed plate (19). A horizontal shaft (21) is rotatably connected inside the second support base (20), and a driven pulley (22) is connected to one end of the horizontal shaft (21). The driven pulley (22) and the double-groove tower pulley (11) are connected by a second transmission belt (23). The horizontal shaft (21) is connected to a turntable (24) at the end away from the driven pulley (22). The eccentric end of the turntable (24) is rotatably connected to a connecting rod (25). One end of the connecting rod (25) is rotatably connected to a mounting seat (26). The mounting seat (26) is fixedly installed on the side of the screen frame (3).

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