High-efficiency screening device for millet and coarse grain processing
By using a hollow carbon steel spring structure and vibrating rod design, the problems of millet residue and clogging in millet and miscellaneous grain screening devices have been solved, achieving efficient separation and automated damage prevention design, thus improving screening efficiency and equipment reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JILIN DEWEI RICE IND CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-19
AI Technical Summary
In existing technologies, millet and miscellaneous grain screening devices have difficulty quickly separating millet residues in the sieve holes and are not easy to clean sieve blockages, resulting in low screening efficiency.
It adopts a hollow carbon steel spring structure, which combines the shape of the spring with gravity to separate millet from other grains. The millet is accelerated through the discharge hole by a vibrating rod, and the spring return force shakes off the blocked millet. The moving mechanism prevents equipment damage and realizes an automated damage prevention design.
It significantly improves screening efficiency, ensures rapid separation of residual materials, effectively removes screen blockage, and enhances the separation effect of millet and other grains, as well as the service life of the equipment.
Smart Images
Figure CN224372041U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of screening devices, specifically relating to a high-efficiency screening device for millet and miscellaneous grain processing. Background Technology
[0002] During agricultural planting or harvesting, different grain crops may naturally mix due to adjacent planting areas, mechanical harvesting errors, or human harvesting oversights, resulting in a mixture of various grains in the raw materials. In addition, if grains are not strictly classified and stored or the packaging is damaged during storage or transportation, different grains may mix due to contact with each other.
[0003] Currently, when millet and other grains are mixed together, since the grain size of other grains is usually larger than that of millet, the sieving of millet and other grains relies on sieve holes of different sizes, allowing millet to pass through the sieve holes while other grains do not, thus achieving rapid sieving of millet and other grains. However, the existing sieving devices are not convenient for quickly separating the millet and other grains remaining in the sieving mechanism, and it is difficult to quickly remove the millet stuck in the sieve holes, which needs further improvement. Utility Model Content
[0004] To overcome the problem that existing screening devices are inconvenient to quickly separate millet and other grains remaining in the screening mechanism and difficult to quickly remove millet stuck in the sieve holes, a high-efficiency screening device for millet and other grain processing is proposed.
[0005] The technical solution of this utility model is as follows: a high-efficiency screening device for millet and miscellaneous grain processing, including a U-shaped block; a base plate is fixedly connected to the upper end of the U-shaped block, a hollow carbon steel spring is fixedly connected to the upper end of the base plate, a plurality of evenly distributed discharge holes are opened through the side wall of the hollow carbon steel spring, a column is fixedly connected to the center of the upper end of the base plate, the hollow carbon steel spring is slidably disposed on the side wall of the column, a pressure ring is slidably disposed on the upper part of the side wall of the column, the lower end of the pressure ring is in contact with the upper end of the hollow carbon steel spring, evenly distributed vibrating rods are fixedly connected to the side wall of the pressure ring, a feeding hopper is provided above the U-shaped block, one end of the feeding cloth pipe is installed at the lower end of the feeding hopper, the other end of the feeding cloth pipe is installed on the inner wall of the upper opening of the hollow carbon steel spring, a straight pipe is fixedly connected through the lower end of the U-shaped block, one end of the discharge cloth pipe is installed at the upper end of the straight pipe, the other end of the discharge cloth pipe is installed on the inner wall of the lower opening of the hollow carbon steel spring;
[0006] A pressure cylinder is fixed to the upper end of the pressure ring. The upper end of the pressure cylinder is a closed structure. A slip ring is fixed to the upper part of the side wall of the column. The slip ring is located above the pressure ring. A spring body is fixed to the lower end of the slip ring. The lower end of the spring body is fixed to the upper end of the pressure ring.
[0007] The side end of the U-shaped block is provided with a moving mechanism, and a pressing mechanism for pressing down the pressure ring is installed on the moving mechanism.
[0008] Furthermore, the discharge holes are spirally distributed on the side wall of the chassis, two support blocks are fixed to the lower end of the U-shaped block, a bracket is fixed to one side of the U-shaped block, and the inner wall of the bracket is fixed to the side wall of the feed hopper.
[0009] Furthermore, the moving mechanism includes a first cylinder and a connecting block; the first cylinder is fixedly connected to the side end of the U-shaped block, and the connecting block is fixedly connected to the upper end of the moving end of the first cylinder.
[0010] Furthermore, the pressing mechanism includes a guide block, a moving block, a second cylinder, and a pressing block; two guide blocks are fixedly connected to the upper end of the U-shaped block, and a moving block is slidably arranged on the side walls of the two guide blocks. The lower end of the moving block is in contact with the upper end of the U-shaped block, and a second cylinder is fixedly connected through the upper end of the moving block. A pressing block is fixedly connected to the lower end of the output shaft of the second cylinder. The lower end face of the pressing block is in contact with the upper end face of the pressing cylinder. The central axes of the pressing block and the pressing cylinder are collinear, and the side end of the moving block is fixedly connected to the side end of the connecting block.
[0011] Furthermore, a second collection box is placed below the U-shaped block, and the second collection box is located below the straight pipe.
[0012] Furthermore, a first collection box is placed at the left end of the U-shaped block, and the first collection box corresponds to the inner walls on both sides of the U-shaped block.
[0013] Furthermore, a brush is placed on the top of the U-shaped block.
[0014] Furthermore, grooves are provided on the inner walls of both sides of the U-shaped block near the left and right edges, and baffles are slidably placed on the inner walls of the corresponding two grooves, with the upper end of the baffles being higher than the upper end of the U-shaped block.
[0015] The beneficial effects of this utility model are as follows: By adopting a hollow carbon steel spring structure, the discharge hole on its side wall only allows millet to pass through. The spring shape and gravity are used to achieve efficient separation of millet and other grains. Compared with the traditional sieve structure, it saves more material and has a higher separation efficiency. The vibrating rod on the pressure ring vibrates during operation, which can accelerate the passage of millet through the discharge hole and reduce residue. The pressing mechanism releases after compressing the hollow carbon steel spring, and the elastic force of the spring when it returns to its original position shakes off the millet stuck in the discharge hole, effectively avoiding the problem of sieve blockage. The moving mechanism can move the pressing mechanism away before the spring returns to its original position, avoiding damage to the pressing mechanism. Through vibration-assisted separation, spring elasticity to clear blockage, and automated anti-damage design, this device significantly improves screening efficiency, ensures rapid separation of residual materials, and effectively clears sieve blockage. It solves the problem that existing screening devices are inconvenient to quickly separate millet and other grains remaining in the screening mechanism and are difficult to quickly remove millet stuck in the sieve holes. Attached Figure Description
[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;
[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the pressing mechanism of this utility model;
[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the baffle of this utility model;
[0019] Figure 4 The diagram shown is a three-dimensional cross-sectional view of the pressure ring of this utility model.
[0020] Figure 5 The diagram shown is a three-dimensional cross-sectional view of the pressure cylinder of this utility model.
[0021] Figure 6 The diagram shown is a three-dimensional structural schematic of the second collection box of this utility model.
[0022] The labels in the attached diagram are as follows: 1. U-shaped block; 2. Chassis; 3. Hollow carbon steel spring; 4. Discharge hole; 5. Column; 6. Pressure ring; 7. Vibrating rod; 8. Feed hopper; 9. Feed distribution pipe; 10. Straight pipe; 11. Discharge distribution pipe; 12. Support block; 13. First collection box; 14. First cylinder; 15. Connecting block; 16. Guide block; 17. Brush; 18. Moving block; 19. Second cylinder; 20. Pressure block; 21. Bracket; 22. Groove; 23. Baffle; 24. Spring body; 25. Slip ring; 26. Pressure cylinder; 27. Second collection box. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] Example 1: Please refer to Figures 1-6 A high-efficiency screening device for millet and miscellaneous grain processing includes a U-shaped block 1; a base plate 2 is fixedly connected to the upper end of the U-shaped block 1, and a hollow carbon steel spring 3 is fixedly connected to the upper end of the base plate 2. Multiple evenly distributed discharge holes 4 are opened through the side wall of the hollow carbon steel spring 3. A column 5 is fixedly connected to the center of the upper end of the base plate 2. The hollow carbon steel spring 3 is slidably mounted on the side wall of the column 5. A pressure ring 6 is slidably mounted on the upper part of the side wall of the column 5. The lower end of the pressure ring 6 and the upper end of the hollow carbon steel spring 3 are connected... The side wall of the pressure ring 6 is fixed with evenly distributed vibrating rods 7. A feeding hopper 8 is set above the U-shaped block 1. One end of the feeding pipe 9 is installed at the lower end of the feeding hopper 8. The other end of the feeding pipe 9 is installed on the inner wall of the upper opening of the hollow carbon steel spring 3. A straight pipe 10 is fixed through the lower end of the U-shaped block 1. One end of the discharge pipe 11 is installed at the upper end of the straight pipe 10. The other end of the discharge pipe 11 is installed on the inner wall of the lower opening of the hollow carbon steel spring 3.
[0025] A pressure cylinder 26 is fixedly connected to the upper end of the pressure ring 6. The upper end of the pressure cylinder 26 is a closed structure. A slip ring 25 is fixedly connected to the upper part of the side wall of the column 5. The slip ring 25 is located above the pressure ring 6. A spring body 24 is fixedly connected to the lower end of the slip ring 25. The lower end of the spring body 24 is fixedly connected to the upper end of the pressure ring 6.
[0026] A moving mechanism is provided at the side end of the U-shaped block 1, and a pressing mechanism for pressing down the pressure ring 6 is installed on the moving mechanism.
[0027] In use, a certain amount of the mixture of millet and other grains is fed into the feed hopper 8. The mixture falls into the hollow carbon steel spring 3 through the feed pipe 9. The hollow carbon steel spring 3 has many discharge holes 4 that allow only millet to pass through. Because the hollow carbon steel spring 3 adopts a spring-shaped structure, when the millet and other grains fall down the inner wall due to gravity, the millet will fall into the U-shaped block 1 through the discharge holes 4, while the other grains will fall downward through the discharge pipe 11 and the straight pipe 10. This separation uses the spring shape and gravity, which has a high separation effect and saves materials. In addition, since the lower end of the pressure ring 6 presses on the upper end of the hollow carbon steel spring 3, and the pressure ring 6 is equipped with a vibrating rod 7, turning on the vibrating rod 7 can make the pressure ring 6 vibrate. The vibration is transmitted to the hollow carbon steel spring 3, which can improve the vibration effect of the millet and other grains in the hollow carbon steel spring 3, allowing the millet to flow out through the discharge holes 4 more quickly.
[0028] Please see Figure 1 and Figure 2 In this embodiment, the discharge hole 4 is spirally distributed on the side wall of the chassis 2. Two support blocks 12 are fixed to the lower end of the U-shaped block 1. A bracket 21 is fixed to one side of the U-shaped block 1. The inner wall of the bracket 21 is fixed to the side wall of the feed hopper 8. The spiral discharge hole 4 increases the material falling path, extends the screening time, and improves the separation effect. The support block 12 and the bracket 21 enhance the stability of the device.
[0029] Please see Figure 1 and Figure 6 In this embodiment, a second collection box 27 is placed below the U-shaped block 1. The second collection box 27 is located below the straight pipe 10 and directly receives the miscellaneous grains discharged from the straight pipe 10, which facilitates the centralized collection of the miscellaneous grains.
[0030] Please see Figure 1 In this embodiment, a first collection box 13 is placed at the left end of the U-shaped block 1. The first collection box 13 corresponds to the inner walls on both sides of the U-shaped block 1. The first collection box 13 corresponds to the discharge position of the U-shaped block 1, which facilitates the collection of millet that falls into the U-shaped block 1.
[0031] Please see Figure 1 In this embodiment, a brush 17 is placed on the upper end of the U-shaped block 1, which can conveniently brush the millet inside the U-shaped block 1.
[0032] Please see Figure 1 and Figure 3 In this embodiment, grooves 22 are provided on both sides of the inner wall of the U-shaped block 1 near the left and right edges. A baffle 23 is slidably placed on the inner wall of the two corresponding grooves 22. The upper end of the baffle 23 is higher than the upper end of the U-shaped block 1. The baffle 23 is placed on the inner wall of the groove 22, which can conveniently block the left and right ends of 1.
[0033] Example 2: Please refer to Figure 2 Based on Embodiment 1, this application provides a technical solution: the pressing mechanism includes a guide block 16, a moving block 18, a second cylinder 19, and a pressing block 20; two guide blocks 16 are fixedly connected to the upper end of the U-shaped block 1, and the moving block 18 is slidably arranged on the side walls of the two guide blocks 16. The lower end of the moving block 18 is in contact with the upper end of the U-shaped block 1, and the second cylinder 19 is fixedly connected through the upper end of the moving block 18. The pressing block 20 is fixedly connected to the lower end of the output shaft of the second cylinder 19. The lower end face of the pressing block 20 is in contact with the upper end face of the pressing cylinder 26. The central axes of the pressing block 20 and the pressing cylinder 26 are collinear, and the side end of the moving block 18 is fixedly connected to the side end of the connecting block 15.
[0034] During use, some millet may get stuck on the inner wall of the discharge hole 4. Therefore, during use, by opening the pressing mechanism to move the pressure ring 6 downward, the hollow carbon steel spring 3 can be compressed. When the hollow carbon steel spring 3 is compressed, it will generate elastic force. Then, when the pressing mechanism is released, the hollow carbon steel spring 3 will return to its original position. At this time, the elastic force will shake off the millet stuck on the inner wall of the discharge hole 4.
[0035] Please see Figure 1 and Figure 2 In this embodiment, the moving mechanism includes a first cylinder 14 and a connecting block 15; the first cylinder 14 is fixedly connected to the side end of the U-shaped block 1, and the connecting block 15 is fixedly connected to the upper end of the moving end of the first cylinder 14. In use, the pressure of the pressing mechanism can be selected. When the pressure is too high and the elastic force of the hollow carbon steel spring 3 increases, the pressing mechanism can be moved away by opening the moving mechanism, which can avoid damage to the pressing mechanism when the hollow carbon steel spring 3 resets.
[0036] Working principle: When in use, the mixture of millet and miscellaneous grains is fed into the feed hopper 8. The mixture falls into the hollow carbon steel spring 3 through the feed cloth pipe 9. The side wall of the hollow carbon steel spring 3 is provided with multiple discharge holes 4 that only allow millet to pass through. Its spring-shaped structure causes the mixture to move downward under the action of gravity. The millet falls into the U-shaped block 1 through the discharge holes 4 and is collected by the first collection box 13 at the left end, while the miscellaneous grains continue to be discharged downward through the discharge cloth pipe 11 and the straight pipe 10 and are collected by the second collection box 27 below.
[0037] In addition, the lower end of the pressure ring 6 presses against the upper end of the hollow carbon steel spring 3, and the vibrating rod 7 on its side wall vibrates after being turned on. This vibration is transmitted to the hollow carbon steel spring 3 through the pressure ring 6, which accelerates the speed at which the millet passes through the discharge hole 4.
[0038] When it is necessary to clean the millet that is clogging the discharge hole 4, the pressing mechanism is activated: the second cylinder 19 drives the pressure block 20 downward, causing the pressure ring 6 to compress the hollow carbon steel spring 3, and then the pressure is released. The elastic force generated when the hollow carbon steel spring 3 returns to its original position can shake off the clogging millet.
[0039] When the pressure ring 6 is subjected to pressure from the pressing mechanism, the spring body 24 is compressed to provide cushioning. After the pressure is released, the elastic force of the spring body 24 helps the pressure ring 6 to return to its original position, while the slip ring 25 ensures that the pressure ring 6 slides smoothly on the column 5.
[0040] The moving block 18 of the pressing mechanism can slide on the guide block 16. The connecting block 15 is driven by the first cylinder 14 of the moving mechanism. When the spring force of the hollow carbon steel spring 3 is too large, the pressing mechanism can be moved away to avoid damage to the equipment.
[0041] In addition, the handheld baffle 23 can be removed from the inner wall of the groove 22, and the handheld brush 17 can clean the residual millet in the U-shaped block 1, making it convenient to sweep the millet into the first collection box 13.
Claims
1. A high-efficiency screening device for millet and coarse grain processing, comprising a U-shaped block (1); characterized in that: A base plate (2) is fixed to the upper end of the U-shaped block (1). A hollow carbon steel spring (3) is fixed to the upper end of the base plate (2). Multiple evenly distributed discharge holes (4) are opened through the side wall of the hollow carbon steel spring (3). A column (5) is fixed to the center of the upper end of the base plate (2). The hollow carbon steel spring (3) is slidably mounted on the side wall of the column (5). A pressure ring (6) is slidably mounted on the upper part of the side wall of the column (5). The lower end of the pressure ring (6) is in contact with the upper end of the hollow carbon steel spring (3). The side wall of the pressure ring (6) is fixed. The U-shaped block (1) is connected to a uniformly distributed vibrating rod (7). A feeding hopper (8) is set above the U-shaped block (1). One end of the feeding pipe (9) is installed at the lower end of the feeding hopper (8). The other end of the feeding pipe (9) is installed on the inner wall of the upper opening of the hollow carbon steel spring (3). A straight pipe (10) is fixedly connected through the lower end of the U-shaped block (1). One end of the discharge pipe (11) is installed at the upper end of the straight pipe (10). The other end of the discharge pipe (11) is installed on the inner wall of the lower opening of the hollow carbon steel spring (3). A pressure cylinder (26) is fixedly connected to the upper end of the pressure ring (6). The upper end of the pressure cylinder (26) is a closed structure. A slip ring (25) is fixedly connected to the upper part of the side wall of the column (5). The slip ring (25) is located above the pressure ring (6). A spring body (24) is fixedly connected to the lower end of the slip ring (25). The lower end of the spring body (24) is fixedly connected to the upper end of the pressure ring (6). The side end of the U-shaped block (1) is provided with a moving mechanism, and a pressing mechanism for pressing down the pressure ring (6) is installed on the moving mechanism.
2. The high-efficiency screening device for millet and coarse cereal processing according to claim 1, characterized in that: The discharge hole (4) is spirally distributed on the side wall of the chassis (2). Two support blocks (12) are fixed to the lower end of the U-shaped block (1). A bracket (21) is fixed to one side of the U-shaped block (1). The inner wall of the bracket (21) is fixed to the side wall of the feed hopper (8).
3. The high-efficiency screening device for millet and miscellaneous grain processing according to claim 1, characterized in that: The moving mechanism includes a first cylinder (14) and a connecting block (15); the first cylinder (14) is fixedly connected to the side end of the U-shaped block (1), and the connecting block (15) is fixedly connected to the upper end of the moving end of the first cylinder (14).
4. The high-efficiency screening device for millet and miscellaneous grain processing according to claim 1, characterized in that: The pressing mechanism includes a guide block (16), a moving block (18), a second cylinder (19), and a pressing block (20). Two guide blocks (16) are fixedly connected to the upper end of the U-shaped block (1). The moving block (18) is slidably arranged on the side wall of the two guide blocks (16). The lower end of the moving block (18) is in contact with the upper end of the U-shaped block (1). The second cylinder (19) is fixedly connected through the upper end of the moving block (18). The pressing block (20) is fixedly connected to the lower end of the output shaft of the second cylinder (19). The lower end face of the pressing block (20) is in contact with the upper end face of the pressing cylinder (26). The central axes of the pressing block (20) and the pressing cylinder (26) are collinear. The side end of the moving block (18) is fixedly connected to the side end of the connecting block (15).
5. The high-efficiency screening device for millet and miscellaneous grain processing according to claim 1, characterized in that: A second collection box (27) is placed below the U-shaped block (1), and the second collection box (27) is located below the straight pipe (10).
6. The high-efficiency screening device for millet and miscellaneous grain processing according to claim 1, characterized in that: A first collection box (13) is placed at the left end of the U-shaped block (1), and the first collection box (13) corresponds to the inner walls on both sides of the U-shaped block (1).
7. The high-efficiency screening device for millet and miscellaneous grain processing according to claim 1, characterized in that: A brush (17) is placed on the upper end of the U-shaped block (1).
8. The high-efficiency screening device for millet and miscellaneous grain processing according to claim 1, characterized in that: The inner walls of the U-shaped block (1) on both sides are provided with grooves (22) near the left and right edges. The inner walls of the two corresponding grooves (22) are slidably fitted with baffles (23), and the upper end of the baffles (23) is higher than the upper end of the U-shaped block (1).