A multi-stage screening and separating device for processing plastic raw materials

Abstract

The utility model relates to the technical field of plastic raw material processing, concretely to a kind of multilevel screening separation equipment of plastic raw material processing, including box, the inside fixed mounting of box is equipped with baffle, and motor is fixedly installed in the middle position of the bottom surface of baffle. After plastic raw material enters box by feed inlet, it is classified by the multistage screening of the first screen cloth, the second screen cloth and the third screen cloth composition;Through the motor drive rotating rod rotation of being fixed in the bottom of baffle starting, drive each level screen cloth synchronous rotation, make plastic raw material form dynamic flow in box, effectively improve material distribution uniformity, avoid the screening efficiency decline problem caused by material accumulation due to traditional fixed screen cloth;The dynamic screening structure not only enhances the flowability of plastic raw material on screen cloth surface, but also optimizes material dispersity in screening process, to significantly improve screening accuracy and efficiency, satisfy the process requirement of high-precision screening, improve the practicability and reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of plastic raw material processing technology, specifically to a multi-stage screening and separation device for plastic raw material processing. Background Technology

[0002] Plastics are polymeric compounds formed by polymerizing monomers through addition or condensation reactions. They possess moderate resistance to deformation, falling between fibers and rubber, and are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. During processing, plastic raw materials require screening and separation equipment for sieving.

[0003] The existing Chinese patent with publication number CN213081978U discloses a screening device for plastic raw materials. However, the existing technical solution has the following drawbacks: Although the above-mentioned technical solution uses a geared motor to drive a first and second rubber stirring plate, which are slidably mounted on a transmission shaft and rotate with the shaft, to stir the plastic particles and accelerate the screening speed, and through the layered screening of the first and second metal filters, it can collect plastic particles of different diameters, improving the utilization accuracy of the plastic particles and increasing the yield of injection molded products, the first and second metal filters in the above-mentioned technical solution adopt a fixed installation structure. This rigid connection method restricts the flow space and movement trajectory of the plastic raw materials during the screening process, resulting in uneven distribution of the raw materials on the screen surface. This not only reduces the efficiency of material passing through the screen but also affects the dynamic balance of the screening process, ultimately leading to a decrease in screening effect and making it difficult to meet the process requirements of high-precision screening.

[0004] In view of the above, a multi-stage screening and separation device for plastic raw material processing is proposed to solve the problem, which improves the flowability of raw materials during screening, has a good screening effect, and can meet the screening requirements for plastic raw materials. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a multi-stage screening and separation device for processing plastic raw materials, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage screening and separation device for processing plastic raw materials, comprising a housing, a partition fixedly installed inside the housing, a motor fixedly installed at the middle position of the bottom surface of the partition, a rotating rod fixedly connected to the output end of the motor, a primary screen fixedly connected to the top of the rotating rod, a secondary screen fixedly installed below the primary screen on the rotating rod, and a tertiary screen fixedly installed below the secondary screen. A connecting frame is fixedly connected to one side surface of the housing above the primary, secondary, and tertiary screens, and a cleaning brush is provided below the connecting frame. An insert is fixedly connected to the top surface of the cleaning brush, and one end of the insert extends into the connecting frame. A spring is fixedly installed in the insert and the connecting frame.

[0009] Optionally, multiple springs are provided, and the multiple springs are evenly distributed in the insert block and the connecting frame, and the insert block matches the connecting frame.

[0010] Optionally, limiting blocks are fixedly connected to both sides of the insert, and one end of the limiting block extends into the interior of the limiting groove opened on both sides of the inner wall of the connecting frame.

[0011] Optionally, a feed inlet is provided at the middle position of the top surface of the box, and the feed inlet is fixedly connected to the box.

[0012] Optionally, the top surface of the partition is provided with discharge ports on both sides, and the rotating rod is provided with a stop block above the partition.

[0013] Optionally, a collection box is provided on the upper surface of the bottom end of the box body, and the collection box is matched with the box body.

[0014] Optionally, the bottom surface of the box is equipped with support legs on both sides, and a total of multiple support legs are installed, with the multiple support legs evenly distributed in pairs on both sides of the bottom surface of the box.

[0015] Optionally, a first door is installed on the front surface of the box, and a second door is installed below the first door.

[0016] (III) Beneficial Effects

[0017] This utility model provides a multi-stage screening and separation device for processing plastic raw materials, which has the following features:

[0018] Beneficial effects:

[0019] 1. In this utility model, after the plastic raw material enters the box through the feed inlet, it undergoes multi-stage screening consisting of a primary screen, a secondary screen, and a tertiary screen for grading. By starting the motor fixed at the bottom of the partition, the rotating rod is driven to rotate, causing each level of screen to rotate synchronously, so that the plastic raw material forms a dynamic flow in the box, effectively improving the uniformity of material distribution and avoiding the problem of reduced screening efficiency caused by material accumulation in traditional fixed screens. This dynamic screening structure not only enhances the fluidity of the plastic raw material on the screen surface, but also optimizes the material dispersion during the screening process, thereby significantly improving screening accuracy and efficiency, meeting the process requirements of high-precision screening, and improving the practicality and reliability of the equipment.

[0020] 2. This utility model uses a cleaning brush to continuously clean the surfaces of the primary, secondary, and tertiary screens, effectively preventing the accumulation of plastic raw materials on the screens and ensuring unobstructed screen holes, thereby maintaining stable screening efficiency. The limiting mechanism, consisting of a connecting frame, spring, and insert block, ensures that the cleaning brush remains in close contact with each level of screen, achieving adaptive adjustment during dynamic screening. This guarantees both the uniformity and thoroughness of cleaning while avoiding poor contact caused by mechanical wear, significantly improving the screen's anti-clogging performance and ensuring efficient and stable operation of the screening process. Attached Figure Description

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

[0022] Figure 2 This is an enlarged view of A of the present invention;

[0023] Figure 3 This is a front view of the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the primary, secondary, and tertiary screens of this utility model.

[0025] In the diagram: 1. Box body; 2. Feed inlet; 3. Primary screen; 4. Secondary screen; 5. Rotating rod; 6. Tertiary screen; 7. Motor; 8. Collection box; 9. Support leg; 10. Stop block; 11. Discharge port; 12. Partition plate; 13. Connecting frame; 14. Spring; 15. Insert block; 16. Cleaning brush; 17. Limiting groove; 18. Limiting block; 19. First box door; 20. Second box door. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the 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 scope of protection of the present utility model.

[0027] Please see Figure 1 A multi-stage screening and separation device for processing plastic raw materials includes a housing 1. A partition 12 is fixedly installed inside the housing 1, and a motor 7 is fixedly installed at the middle position of the bottom surface of the partition 12. A rotating rod 5 is fixedly connected to the output end of the motor 7, and a primary screen 3 is fixedly connected to the top of the rotating rod 5. A secondary screen 4 is fixedly installed on the rotating rod 5 below the primary screen 3, and a tertiary screen 6 is fixedly installed below the secondary screen 4. The primary, secondary, and tertiary screens 3, 4, and 6 are all circular structures matching the housing 1. Furthermore, the diameters of the primary, secondary, and tertiary screens 3 and 4 are smaller than the diameter of the housing 1, ensuring normal rotation of the primary, secondary, and tertiary screens 3 and 4 within the housing 1. This allows the plastic raw materials to flow dynamically within the housing 1, effectively improving the uniformity of material distribution. One side of the housing 1... A connecting frame 13 is fixedly connected above the primary screen 3, secondary screen 4, and tertiary screen 6. A cleaning brush 16 is provided below the connecting frame 13. An insert block 15 is fixedly connected to the top surface of the cleaning brush 16, and one end of the insert block 15 extends into the connecting frame 13. A spring 14 is fixedly installed in the insert block 15 and the connecting frame 13. The insert block 15 and the connecting frame 13 are rectangular structures, and the length and width of the insert block 15 are smaller than the length and width of the connecting frame 13. Therefore, the insert block 15 can move into the connecting frame 13, thereby squeezing the spring 14 between the insert block 15 and the connecting frame 13. The spring 14 will deform after being squeezed, so that the cleaning brush 16 can always keep in close contact with each level of screen. Adaptive adjustment is achieved during dynamic screening, which not only ensures the uniformity and thoroughness of cleaning, but also avoids poor contact problems caused by mechanical wear.

[0028] Please see Figure 1 and Figure 2 Multiple springs 14 are provided, and the multiple springs 14 are evenly distributed in the insert block 15 and the connecting frame 13. The insert block 15 matches the connecting frame 13. The ends of the springs 14 are fixedly connected to the insert block 15 and the connecting frame 13 respectively. The use of multiple springs 14 can improve the fragrance effect on the cleaning brush 16, so that it can always be in contact with the primary screen 3, the secondary screen 4 and the tertiary screen 6, which facilitates the cleaning of materials on the primary screen 3, the secondary screen 4 and the tertiary screen 6.

[0029] Please see Figure 1 and Figure 2Limiting blocks 18 are fixedly connected to both sides of the insert 15, and one end of the limiting block 18 extends into the interior of the limiting groove 17 opened on both sides of the inner wall of the connecting frame 13. The limiting block 18 and the limiting groove 17 are rectangular structures, and the width of the limiting block 18 is smaller than the width of the limiting groove 17. The limiting block 18 and the limiting groove 17 are slidably connected. By using the limiting block 18 and the limiting groove 17, the cleaning brush 16 can be limited, and the stability of the cleaning brush 16 during movement can be maintained.

[0030] Please see Figure 1 The top surface of the box 1 is provided with a feed inlet 2 in the middle position, and the feed inlet 2 is fixedly connected to the box 1. The feed inlet 2 has a circular structure, which makes it convenient to add materials into the box 1.

[0031] Please see Figure 1 and Figure 4 The top surface of the partition 12 is provided with a discharge port 11 on both sides. The rotating rod 5 is provided with a baffle 10 above the partition 12. The discharge port 11 is a semi-circular structure, which allows the screened material to enter the collection box 8 through the discharge port 11. The baffle 10 is a conical structure, which can block the material on the partition 12 so that it can enter the collection box 8, making it convenient to collect the screened material.

[0032] Please see Figure 1 The bottom upper surface of the box 1 is provided with a collection box 8, which matches the box 1. The collection box 8 has a circular structure and is movably connected to the box 1. The collection box 8 can be taken out of the box 1 by opening the second box door 20 and pulling the collection box 8.

[0033] Please see Figure 1 and Figure 3 Support legs 9 are installed on both sides of the bottom surface of the box 1. There are multiple support legs 9, and the multiple support legs 9 are evenly distributed in pairs on both sides of the bottom surface of the box 1. The support legs 9 are circular and are fixedly welded to the box 1. The support legs 9 support the box 1 and maintain the stability of the box 1 during use.

[0034] Please see Figure 3 A first door 19 is installed on the front surface of the box body 1, and a second door 20 is installed below the first door 19. The first door 19 and the second door 20 are hinged to the box body 1. By opening the first door 19, the material on each level of screen can be cleaned, and by opening the second door 20, the screened raw material can be taken out.

[0035] Working principle of this utility model:

[0036] Plastic raw materials enter the housing 1 through the feed inlet 2 and undergo grading through a multi-stage screening process consisting of a primary screen 3, a secondary screen 4, and a tertiary screen 6. The motor 7, fixed to the bottom of the partition 12, drives the rotating rod 5 to rotate, causing each stage of the screens to rotate synchronously. This creates a dynamic flow of the plastic raw material within the housing 1, effectively improving the uniformity of material distribution and avoiding the reduced screening efficiency caused by material accumulation in traditional fixed screens. This dynamic screening structure not only enhances the flowability of the plastic raw material on the screen surface but also optimizes the material dispersion during the screening process, thereby significantly improving screening accuracy and efficiency, meeting the process requirements of high-precision screening. This also improves the practicality and reliability of the equipment. The cleaning brush 16 continuously cleans the surfaces of the primary screen 3, secondary screen 4, and tertiary screen 6, effectively preventing the accumulation of plastic raw materials on the screens and ensuring unobstructed screen holes, thereby maintaining stable screening efficiency. The limiting mechanism, consisting of the connecting frame 13, spring 14, and insert block 15, ensures that the cleaning brush 16 always maintains close contact with each level of screen, achieving adaptive adjustment during dynamic screening. This ensures both the uniformity and thoroughness of cleaning and avoids poor contact caused by mechanical wear, thus significantly improving the anti-clogging performance of the screens and ensuring efficient and stable operation of the screening process.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening and separation device for processing plastic raw materials, comprising a housing (1), characterized in that: A partition (12) is fixedly installed inside the box (1), and a motor (7) is fixedly installed at the middle position of the bottom surface of the partition (12). A rotating rod (5) is fixedly connected to the output end of the motor (7), and a primary screen (3) is fixedly connected to the top of the rotating rod (5). A secondary screen (4) is fixedly installed on the rotating rod (5) below the primary screen (3), and a tertiary screen (6) is fixedly installed below the secondary screen (4). A connecting frame (13) is fixedly connected to one side surface of the box (1) above the primary screen (3), the secondary screen (4), and the tertiary screen (6). A cleaning brush (16) is provided below the connecting frame (13). A plug (15) is fixedly connected to the top surface of the cleaning brush (16), and one end of the plug (15) extends into the connecting frame (13). A spring (14) is fixedly installed in the plug (15) and the connecting frame (13).

2. The multi-stage screening and separation equipment for processing plastic raw materials according to claim 1, characterized in that: Multiple springs (14) are provided, and the multiple springs (14) are evenly distributed in the insert (15) and the connecting frame (13), and the insert (15) matches the connecting frame (13).

3. The multi-stage screening and separation equipment for processing plastic raw materials according to claim 1, characterized in that: The two sides of the insert (15) are fixedly connected to the limiting blocks (18), and one end of the limiting blocks (18) extends into the interior of the limiting grooves (17) opened on both sides of the inner wall of the connecting frame (13).

4. The multi-stage screening and separation equipment for processing plastic raw materials according to claim 1, characterized in that: The top surface of the box (1) is provided with a feed inlet (2) at the middle position, and the feed inlet (2) is fixedly connected to the box (1).

5. The multi-stage screening and separation equipment for processing plastic raw materials according to claim 1, characterized in that: The top surface of the partition (12) is provided with a discharge port (11) on both sides, and the rotating rod (5) is provided with a stop block (10) above the partition (12).

6. The multi-stage screening and separation equipment for processing plastic raw materials according to claim 1, characterized in that: The bottom upper surface of the box (1) is provided with a collection box (8), which is matched with the box (1).

7. The multi-stage screening and separation equipment for processing plastic raw materials according to claim 1, characterized in that: The bottom surface of the box (1) is equipped with support legs (9) on both sides. There are multiple support legs (9), and the multiple support legs (9) are evenly distributed in pairs on both sides of the bottom surface of the box (1).

8. The multi-stage screening and separation equipment for processing plastic raw materials according to claim 1, characterized in that: The front surface of the box (1) is provided with a first door (19), and a second door (20) is provided below the first door (19).

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