Polypropylene particle screening conveyor

Abstract

The utility model discloses a kind of polypropylene particle screening transmission mechanisms, including base, the top of the base is fixedly connected with fixed frame, fixedly connected with square box on the fixed frame, and its top and bottom are both set as opening, the top of the base is equipped with conveyor belt, and it is located below square box.The utility model belongs to the technical field of plastic particle screening, specifically a kind of polypropylene particle screening transmission mechanism, which solves the problems of single fixed or vibration mode of sieve plate, incomplete screening caused by easy accumulation of particles, most of the fixed port for feeding, particle concentrated accumulation, manual adjustment of part of the structure, and cannot be linked screening.

Description

Technical Field

[0001] This utility model belongs to the field of plastic particle screening technology, and in particular relates to a polypropylene particle screening and conveying mechanism. Background Technology

[0002] The uniformity of polypropylene particle size affects the quality of subsequent products, requiring screening and efficient transport before production. Currently, a split structure of "fixed screen + independent conveyor belt" or a simple vibration device is often used. The split structure requires manual transfer, which is inefficient and wasteful; although the simple device connects screening and transport, it has significant problems.

[0003] In terms of screening, the screen plate is fixed or has a single vibration mode, which makes it easy for particles to accumulate and result in incomplete screening. It is also difficult to adjust the amplitude and frequency, resulting in poor versatility. The feeding port is mostly fixed, causing particles to accumulate. Some adjustment structures require manual operation and cannot be linked to screening. The drive uses ordinary motors with cams, which results in unstable power and difficulty in controlling the speed. Utility Model Content

[0004] The technical problem this invention aims to solve is that the screen plate is fixed or has a single vibration mode, which makes particles easy to accumulate and result in incomplete screening. The feeding port is mostly fixed, causing particles to accumulate. Some adjustment structures require manual operation and cannot be linked for screening.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a polypropylene particle screening and conveying mechanism, including a base, a fixed frame fixedly connected to the top of the base, a square box fixedly connected to the fixed frame, and both the top and bottom of the square box being open; a conveyor belt is provided on the top of the base and located below the square box; and further includes...

[0006] The screening assembly, located between the square box and the conveyor belt, includes upright plates fixedly connected to the top of the base, which are symmetrically distributed in pairs. Guide rods are fixedly connected between the inner walls of the upright plates, and horizontal screen plates slide on the guide rods, which are located directly below the square box.

[0007] Furthermore, a side plate is fixedly connected to the outer wall of the square box, and a vertical rotating shaft is rotatably mounted on the side plate. A base is fixedly connected to the lower end of the rotating shaft, and a movable rod is rotatably connected between the bottom wall of the base and the bottom wall of the sieve plate. The movable rod and the base are eccentrically arranged, and the rotating shaft is rotated by a drive unit.

[0008] Furthermore, the inner walls of the square box are fixedly connected with symmetrically distributed inner rods, and horizontal adjusting blocks slide on the inner rods. A feeding pipe is fixedly connected to the adjusting blocks. A top plate is fixedly connected to the upper end of the rotating shaft. A connecting rod is rotatably connected between the top wall of the top plate and the adjusting blocks. The connecting rod and the top plate are eccentrically arranged.

[0009] Furthermore, the drive unit includes a fixed plate fixedly connected to the top of the base, a servo motor fixedly mounted on the outer wall of the fixed plate, a bevel gear one fixedly connected to the output end of the servo motor, and a bevel gear two meshing with the bevel gear one fixedly connected to the rotating shaft.

[0010] Furthermore, a guide plate is fixedly connected to the bottom of the sieve plate, and it is wider at the top and narrower at the bottom.

[0011] Furthermore, the diameter of the top plate is larger than the diameter of the bottom plate, and the diameter of the first bevel gear is larger than the diameter of the second bevel gear.

[0012] The beneficial effects of this utility model after adopting the above structure are as follows:

[0013] (1) In the screening assembly, the bevel gear drives the rotating shaft to rotate, and the eccentrically set movable rod moves synchronously with the chassis, driving the screen plate to slide horizontally back and forth along the guide rod, replacing the fixed or single vibrating screen plate, effectively avoiding the accumulation of polypropylene particles, achieving thorough screening, and the servo motor can precisely control the speed, thereby adjusting the vibration amplitude and frequency of the screen plate to adapt to the screening needs of different particle sizes, improving versatility, and solving the problems of incomplete screening and poor versatility in traditional screening.

[0014] (2) When the shaft rotates, the top plate synchronously drives the eccentric connecting rod to move, so that the adjusting block slides horizontally along the inner rod, thereby driving the feeding pipe to move back and forth, changing the particle feeding position, avoiding the particle accumulation caused by the fixed feeding port, and the feeding adjustment and screening action are linked, without the need for manual operation, improving the feeding uniformity and operation convenience, and reducing particle waste.

[0015] (3) The diameter of the top plate is larger than that of the bottom plate, which allows the movement range of the feeding pipe to be adapted to the screening area of ​​the screen plate, ensuring that the particles are evenly distributed on the screen plate and further improving the screening effect. The guide plate below the screen plate is set with a wider top and a narrower bottom, which can accurately guide the screened particles to the conveyor belt below, realizing seamless connection between screening and transmission, replacing the split structure that requires manual transfer, improving transmission efficiency and reducing labor costs. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of a polypropylene particle sieving and conveying mechanism proposed in this utility model.

[0018] Figure 2 This is a front view of a polypropylene particle sieving and conveying mechanism proposed in this utility model;

[0019] Figure 3 A three-dimensional structural diagram of a polypropylene particle sieving and conveying mechanism proposed in this utility model. Figure 1 ;

[0020] Figure 4 A three-dimensional structural diagram of a polypropylene particle sieving and conveying mechanism proposed in this utility model. Figure 2 .

[0021] In the attached diagram: 1. Base, 2. Fixing frame, 3. Square box, 4. Conveyor belt, 5. Vertical plate, 6. Guide rod, 7. Side plate, 8. Rotating shaft, 9. Chassis, 10. Movable rod, 11. Inner rod, 12. Feeding pipe, 13. Top plate, 14. Connecting rod, 15. Fixing plate, 16. Servo motor, 17. Bevel gear one, 18. Bevel gear two, 19. Guide plate, 20. Adjusting block, 21. Screen plate. Detailed Implementation

[0022] like Figures 1-4 As shown, a polypropylene particle screening and conveying mechanism includes a base 1, which provides a stable support foundation for the entire device. A fixed frame 2 is fixedly connected to the top of the base 1, and a square box 3 is fixedly connected to the fixed frame 2. The square box 3 has openings at both the top and bottom. The square box 3 serves as a carrier for particle feeding and transition. The top opening is used to receive the polypropylene particles to be screened, and the bottom opening provides a channel for the particles to fall into the screening components. A conveyor belt 4 is provided on the top of the base 1 and is located below the square box 3. It is used to receive the screened particles and achieve efficient transmission, replacing the traditional split structure of "fixed screen + independent conveyor belt 4". It eliminates the need for manual transfer and reduces labor costs and particle waste from the source.

[0023] The screening assembly, located between the square box 3 and the conveyor belt 4, is the core structure for particle screening. It includes upright plates 5 fixedly connected to the top of the base 1. The upright plates 5 are symmetrically distributed in pairs. Guide rods 6 are fixedly connected between the inner walls of the upright plates 5. A horizontal screen plate 21 slides on the guide rods 6, and the screen plate 21 is located directly below the square box 3. The screen plate 21 can select the corresponding aperture according to the target particle size of the polypropylene particles to be screened, ensuring that only particles that meet the particle size requirements can pass through the screen plate 21, while particles that do not meet the requirements remain on the screen plate 21 for subsequent cleaning. The guide rods 6 provide stable guidance for the sliding of the screen plate 21, preventing the screen plate 21 from deviating during movement and ensuring the stability of the screening process.

[0024] A side plate 7 is fixedly connected to the outer wall of the square box 3. A vertical rotating shaft 8 is rotatably mounted on the side plate 7. A base 9 is fixedly connected to the lower end of the rotating shaft 8. A movable rod 10 is rotatably connected between the bottom wall of the base 9 and the bottom wall of the sieve plate 21. The movable rod 10 and the base 9 are eccentrically set. The rotating shaft 8 is rotated by a drive unit. The drive unit includes a fixed plate 15 fixedly connected to the top of the base 1. A servo motor 16 is fixedly mounted on the outer wall of the fixed plate 15. A bevel gear 17 is fixedly connected to the output end of the servo motor 16. A bevel gear 18 that meshes with the bevel gear 17 is fixedly connected to the rotating shaft 8. The diameter of the bevel gear 17 is larger than the diameter of the bevel gear 18.

[0025] When screening is required, the servo motor 16 is started, which drives the bevel gear 17 to rotate. The bevel gear 17 meshes with the bevel gear 18, which in turn drives the rotating shaft 8 to rotate stably along the side plate 7. When the rotating shaft 8 rotates, the chassis 9 at the lower end rotates synchronously. Because the movable rod 10 is eccentrically connected to the chassis 9, the rotation of the chassis 9 is converted into a pushing and pulling action of the movable rod 10, which drives the screen plate 21 to slide horizontally back and forth along the guide rod 6. This back and forth sliding replaces the traditional fixed or single vibration mode screen plate 21, which can effectively disperse the polypropylene particles to be screened, prevent particles from accumulating on the screen plate 21, and ensure that each particle can fully contact the screen plate 21 to achieve thorough screening. The servo motor 16 can adjust the output speed to precisely change the rotation speed of the rotating shaft 8, thereby adjusting the back and forth sliding amplitude and frequency of the screen plate 21 to adapt to the screening needs of polypropylene particles of different sizes, greatly improving the versatility of the device and solving the problem of poor versatility of traditional screening devices.

[0026] The inner walls of the square box 3 are fixedly connected with symmetrically distributed inner rods 11. A horizontal adjusting block 20 slides on the inner rod 11. A feeding pipe 12 is fixedly connected to the adjusting block 20. A top plate 13 is fixedly connected to the upper end of the rotating shaft 8. A connecting rod 14 is rotatably connected between the top wall of the top plate 13 and the adjusting block 20. The connecting rod 14 and the top plate 13 are eccentrically arranged, and the diameter of the top plate 13 is larger than the diameter of the base plate 9.

[0027] While the rotating shaft 8 drives the chassis 9 to rotate, the top plate 13 at the upper end also rotates synchronously. Because the connecting rod 14 is eccentrically connected to the top plate 13, the rotation of the top plate 13 will drive the connecting rod 14 to push and pull the adjusting block 20, so that the adjusting block 20 slides horizontally back and forth along the inner rod 11, thereby driving the feeding pipe 12 to move synchronously. The movement of the feeding pipe 12 can change the feeding position of polypropylene particles, avoiding the problem of particles accumulating locally on the screen plate 21 caused by the traditional fixed feeding port. Moreover, the adjustment action of the feeding pipe 12 and the screening action of the screen plate 21 are linked through the same rotating shaft 8, without the need for additional manual operation. This not only improves the uniformity of feeding but also simplifies the operation process and reduces the problem of low screening efficiency caused by untimely manual adjustment. At the same time, the diameter of the top plate 13 is larger than that of the chassis 9, so that the movement range of the feeding pipe 12 is precisely matched with the screening area of ​​the screen plate 21, ensuring that the particles can be evenly distributed on the entire screen plate 21, further improving the thoroughness of screening and avoiding local overload of the screen plate 21 from affecting the screening effect.

[0028] A guide plate 19 is fixedly connected to the bottom of the sieve plate 21. The guide plate 19 is wider at the top and narrower at the bottom. Qualified particles passing through the sieve plate 21 will fall into the guide plate 19. The guide plate 19, which is wider at the top and narrower at the bottom, can gather the scattered falling particles and accurately guide them to the conveyor belt 4 below. This avoids the particles from falling outside the conveyor belt 4 due to dispersion and waste, achieving seamless connection between screening and transmission, further improving transmission efficiency, and ensuring the continuity of the entire screening and transmission process.

[0029] The working principle of this utility model is as follows: Select a sieve plate 21 with a corresponding aperture according to the particle size of the polypropylene particles to be screened. Pour the particles to be screened into the feeding pipe 12. The particles fall into the feeding pipe 12 through the square box 3. Start the servo motor 16 and the conveyor belt 4. The servo motor 16 drives the rotating shaft 8 to rotate through the bevel gear transmission. The lower end of the rotating shaft 8 drives the sieve plate 21 to slide back and forth along the guide rod 6 through the base plate 9 and the movable rod 10. The upper end drives the feeding pipe 12 to move back and forth along the inner rod 11 through the top plate 13 and the connecting rod 14, so that the particles are evenly distributed on the sieve plate 21. Particles that meet the particle size requirements pass through the sieve plate 21, are gathered by the guide plate 19 and fall into the conveyor belt 4, and are transported to the next process by the conveyor belt 4. Particles that do not meet the particle size requirements remain on the sieve plate 21 and can be cleaned after screening is completed.

[0030] 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. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A polypropylene particle screening and conveying mechanism, comprising a base (1), a fixed frame (2) fixedly connected to the top of the base (1), a square box (3) fixedly connected to the fixed frame (2), and both its top and bottom being open; a conveyor belt (4) is provided on the top of the base (1), and is located below the square box (3), characterized in that: Also includes The screening assembly is located between the square box (3) and the conveyor belt (4), including upright plates (5) fixedly connected to the top of the base (1) and symmetrically distributed in pairs. Guide rods (6) are fixedly connected between the inner walls of the upright plates (5), and a horizontal screen plate (21) slides on the guide rod (6) and is located directly below the square box (3). The outer wall of the square box (3) is fixedly connected to a side plate (7), and a vertical rotating shaft (8) is rotatably mounted on the side plate (7). The lower end of the rotating shaft (8) is fixedly connected to a base (9). A movable rod (10) is rotatably connected between the bottom wall of the base (9) and the bottom wall of the sieve plate (21). The movable rod (10) and the base (9) are eccentrically mounted. The rotating shaft (8) is rotated by a drive unit. The inner walls of the square box (3) are fixedly connected with symmetrically distributed inner rods (11). A horizontal adjusting block (20) slides on the inner rod (11). A feeding pipe (12) is fixedly connected to the adjusting block (20). A top plate (13) is fixedly connected to the upper end of the rotating shaft (8). A connecting rod (14) is rotatably connected between the top wall of the top plate (13) and the adjusting block (20). The connecting rod (14) and the top plate (13) are eccentrically arranged.

2. The polypropylene particle screening and conveying mechanism according to claim 1, characterized in that: The drive unit includes a fixed plate (15) fixedly connected to the top of the base (1), a servo motor (16) fixedly installed on the outer wall of the fixed plate (15), a bevel gear (17) fixedly connected to the output end of the servo motor (16), and a bevel gear (18) meshing with the bevel gear (17) fixedly connected to the rotating shaft (8).

3. The polypropylene particle screening and conveying mechanism according to claim 1, characterized in that: The bottom of the sieve plate (21) is fixedly connected to a guide plate (19), which is wider at the top and narrower at the bottom.

4. The polypropylene particle screening and conveying mechanism according to claim 2, characterized in that: The diameter of the top plate (13) is greater than the diameter of the bottom plate (9), and the diameter of the first bevel gear (17) is greater than the diameter of the second bevel gear (18).

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