Multi-stage seed sowing device capable of improving seed distribution uniformity
By introducing a vibrating screening and cleaning mechanism into the multi-stage seed metering device, the problem of uneven seed distribution was solved, enabling seed grading, screening, and cleaning, thus improving sowing quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-03
AI Technical Summary
Existing multi-stage seed metering devices perform poorly in terms of vibration screening, leading to easy seed accumulation and blockage, making it difficult to distribute seeds evenly, thus affecting sowing quality and crop growth.
A multi-stage seed metering device was designed, which includes a vibrating screening mechanism and a cleaning mechanism. The vibrator drives the screen to vibrate for screening, and the brush plate cleaning mechanism removes seeds and impurities to ensure uniform seed distribution.
It enables seed grading, screening, and cleaning, avoiding accumulation and clogging, improving sowing quality and efficiency, and adapting to the needs of different types and sizes of seeds.
Smart Images
Figure CN223958004U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a multi-stage seed metering device for improving seed distribution uniformity. Background Technology
[0002] When using multi-stage seed metering devices to improve seed distribution uniformity, these devices are often used to ensure that seeds are more evenly distributed in the soil during sowing. This improves crop growth consistency and yield, reduces resource waste and pest and disease risks caused by uneven seed density, and achieves precise sowing by accurately controlling the seed placement position and spacing through multiple grading steps. This optimizes field management efficiency and enhances the overall benefits of agricultural production.
[0003] Multi-stage seed metering devices use seed metering trays and seed guide tubes of different sizes to distribute seeds evenly in each seed metering tray and discharge them sequentially through vibration, airflow or mechanical transmission, ensuring uniform seed distribution and improving sowing quality and efficiency.
[0004] Existing multi-stage seed metering devices, while capable of achieving uniform seed distribution, suffer from several shortcomings. In particular, their vibration screening function is inadequate in promoting even seed distribution. Most seed metering devices lack a reasonable vibration structure design, failing to adequately and effectively vibrate and screen seeds during the metering process. In actual operation, seeds easily accumulate and clog within the metering device, hindering orderly and uniform seed discharge. This not only results in uneven seed distribution and reduced sowing quality but also easily leads to missed sowing, double sowing, and other problems, ultimately wasting seeds and affecting crop growth and yield. Furthermore, existing seed metering devices have poor adaptability to different types, shapes, and sizes of seeds, making it difficult to meet diverse metering needs through vibration screening. Therefore, a multi-stage seed metering device to improve seed distribution uniformity is proposed to address these issues. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a multi-stage seed metering device to improve the uniformity of seed distribution, aiming to address the problem that some existing devices cannot perform uniform seed distribution through vibratory sieving.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A multi-stage seed metering device for improving seed distribution uniformity includes a seed metering chamber, a seed inlet fixedly connected to the top of the seed metering chamber, a vibrating screening mechanism inside the seed metering chamber, and a cleaning mechanism inside the seed metering chamber.
[0008] The vibrating screening mechanism includes a baffle, a drive assembly fixedly connected inside the baffle, a connecting rod fixedly connected to the top space of the drive assembly, a screen fixedly connected to the top space of the connecting rod, a vibration spring fixedly connected to the outer side of the screen, a partition plate fixedly connected to the bottom space of the screen, a large seed sieve opening on the inner side of the screen, a small seed sieve opening on the inner side of the screen, a fixed connection on the outer side of the baffle to the inner side of the seed dispensing chamber, a fixed connection on the outer side of the vibration spring to the inside of the baffle, and a fixed connection on the outer side of the partition plate to the inner space of the seed dispensing chamber.
[0009] As a further description of the above technical solution:
[0010] The cleaning mechanism includes a housing, a motor is fixedly connected to the internal space of the housing, a drive shaft is rotatably connected to the output end of the motor, a drive bevel gear is fixedly connected to the outer side of the drive shaft, and the outer side of the housing is fixedly connected to the outer side of the seed metering chamber.
[0011] As a further description of the above technical solution:
[0012] The drive assembly includes a vibrator, the vibrator being externally fixedly connected to the inside of the baffle, and the connecting rod being externally fixedly connected to the outside of the vibrator;
[0013] As a further description of the above technical solution:
[0014] The driving bevel gear is meshed with a driven bevel gear on its outer side, and a rotating rod is fixedly connected to the outer side of the driven bevel gear. A brush plate is rotatably connected to the outer side of the rotating rod, and the brush plate is slidably connected to the outer side of the screen.
[0015] As a further description of the above technical solution:
[0016] A shell is fixedly connected to one side of the seed dispensing chamber, and an outer shell is fixedly connected to one side of the outer shell.
[0017] As a further description of the above technical solution:
[0018] A motor is fixedly connected to the internal space of the outer shell, and a transmission shaft is rotatably connected to the output end of the motor.
[0019] As a further description of the above technical solution:
[0020] A large inner disc is fixedly connected to the outer side of the second drive shaft, and a small inner disc is fixedly connected to the outer side of the second drive shaft. The outer side of the large inner disc is rotatably connected to the inside of the housing, and the outer side of the small inner disc is rotatably connected to the inside of the housing.
[0021] As a further description of the above technical solution:
[0022] The bottom of the large seed inner plate has a large seed outlet, and the bottom of the small seed inner plate has a small seed outlet. The large seed outlet is located on the outer side of the shell, and the small seed outlet is located on the outer side of the shell.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, by starting the vibrator, the connecting rod drives the screen to vibrate. Under the movement of the screen, the vibrator drives the screen to vibrate through the vibration spring. Under the action of vibration, the seeds are screened. When the seeds fall on the screen, due to the different sizes of the screen holes, large seeds will be screened out through the large seed screen hole, while small seeds will be screened out through the small seed screen hole, thereby realizing the grading and screening of seeds.
[0025] 2. In this utility model, by starting motor one, motor one drives transmission shaft one to rotate. Under the movement of transmission shaft one, the drive shaft drives driven bevel gear through drive bevel gear to rotate inside the seed dispensing chamber. Driven bevel gear drives brush plate through rotating rod to clean the outside of the screen. By using the friction and sweeping action of the brush bristles, seeds, impurities and dirt attached to the inner wall of the screen are thoroughly removed, maintaining the permeability of the filter plate. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of the multi-stage seed metering device for improving seed distribution uniformity proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the inlet structure of the multi-stage seed metering device for improving seed distribution uniformity proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the structure of the screen in the multi-stage seed metering device for improving seed distribution uniformity proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the shell structure of the multi-stage seed metering device for improving seed distribution uniformity proposed in this utility model;
[0030] Figure 5 for Figure 3 Enlarged view of point A in the middle.
[0031] Legend:
[0032] 1. Seed metering chamber; 2. Seed inlet; 3. Baffle; 4. Vibrator; 5. Connecting rod; 6. Screen; 7. Vibration spring; 8. Divider plate; 9. Large seed sieve opening; 10. Small seed sieve opening; 11. Outer shell one; 12. Motor one; 13. Drive shaft one; 14. Driving bevel gear; 15. Driven bevel gear; 16. Rotating rod; 17. Brush plate; 18. Shell; 19. Outer shell two; 20. Motor two; 21. Drive shaft two; 22. Large seed inner disc; 23. Small seed inner disc; 24. Large seed outlet; 25. Small seed outlet. Detailed Implementation
[0033] 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 protection scope of the present utility model.
[0034] Reference Figures 1 to 2 This utility model provides an embodiment of a multi-stage seed metering device for improving seed distribution uniformity, including a seed metering chamber 1, which is the main place for seed storage and seed metering operations, and provides a relatively closed and stable working environment for subsequent seed feeding, screening, cleaning and other processes. The top of the seed metering chamber 1 is fixedly connected to a seed inlet 2, which is the channel for seeds to enter the seed metering chamber 1, ensuring that seeds can enter the seed metering chamber 1 in an orderly manner, and providing a continuous supply of seeds for subsequent seed metering operations. The seed metering chamber 1 is equipped with a vibrating screening mechanism and a cleaning mechanism.
[0035] The vibrating sieving mechanism includes a baffle 3, which is a supporting component of the vibrating sieving mechanism, bearing the drive assembly and connecting rod 5, and providing a stable working platform. The drive assembly is fixedly connected inside the baffle 3, providing power to the vibrating sieving mechanism, causing the screen 6 to vibrate at high frequency, thereby achieving the seed sieving effect. Its vibration frequency and amplitude can be adjusted according to actual needs to adapt to the sieving requirements of different types and sizes of seeds. The connecting rod 5 is fixedly connected to the top space area of the drive assembly, which is an intermediate component for vibration transmission, transmitting the vibration generated by the vibrator 4 to the screen 6, so that the screen 6 can vibrate in accordance with the rhythm of the vibrator 4. The screen 6 is fixedly connected to the top space area of the connecting rod 5. Under the action of vibration, the seeds are sieved. When the seeds fall on the screen 6, due to the different sizes of the sieve holes, large seeds will be sieved out through the large seed sieve 9, while small seeds will be sieved out through the small seed sieve 10, thereby achieving seed grading and screening.
[0036] A vibration spring 7 is fixedly connected to the outer side of the screen 6, which plays a role in buffering and shock absorption during vibration, making the vibration of the screen 6 more stable and uniform. At the same time, the vibration spring 7 can also adjust the vibration frequency and amplitude of the screen 6. Different vibration effects can be achieved by changing the stiffness and length of the spring. A partition plate 8 is fixedly connected to the space area at the bottom of the screen 6, dividing the inside of the seed dispensing chamber 1 into different areas, so that large seeds and small seeds are collected and processed in different areas, avoiding them from mixing and improving the efficiency and accuracy of seed screening. A large seed sieve opening 9 is opened on the inner side of the screen 6 to ensure that large seeds can pass through the sieve opening smoothly. The edge of the sieve opening is smoothed to avoid damaging the seeds.
[0037] The inner side of the mesh screen 6 is provided with a small seed sieve opening 10 to ensure that small seeds can be effectively sieved. The edge of the small seed sieve opening 10 is also smoothed to prevent the seeds from being scratched during the sieve process. The outer side of the baffle 3 is fixedly connected to the inner side of the seed dispensing chamber 1. The outer side of the vibration spring 7 is fixedly connected to the inner side of the baffle 3. The outer side of the partition plate 8 is fixedly connected to the inner space area of the seed dispensing chamber 1. The cleaning mechanism includes a housing 11, which is the main frame of the cleaning mechanism and plays a role in sealing and protection. The inner space area of the housing 11 is fixedly connected to a motor 12, which is the power source of the cleaning mechanism. The motor 12 provides power to the entire cleaning mechanism through the rotation of the output shaft, converting electrical energy into mechanical energy, driving the transmission shaft 13 to rotate, thereby driving the subsequent bevel gear transmission and the brush plate 17 to move, so as to realize the cleaning work of the inner wall of the seed dispensing chamber 1.
[0038] The output end of the motor 12 is rotatably connected to the drive shaft 13, which transmits the rotational power of the motor 12 to the drive bevel gear 14. Driven by the motor 12, the motor rotates and drives the drive bevel gear 14 to rotate through its own torque and speed, thereby starting the working process of the entire cleaning mechanism. The drive bevel gear 14 is fixedly connected to the outer side of the drive shaft 13. Through the meshing action with the driven bevel gear 15, the power transmitted from the drive shaft 13 is changed in direction and decelerated and torque increased. The high-speed, low-torque power of the motor 12 is converted into low-speed, high-torque power suitable for the working of the cleaning mechanism, thereby driving the driven bevel gear 15 to rotate, providing power support for the subsequent movement of the rotating rod 16 and the brush plate 17. The outer shell 11 is fixedly connected to the outer side of the seed dispensing chamber 1.
[0039] Reference Figures 3 to 4The drive assembly includes a vibrator 4, which is externally fixedly connected to the inside of the baffle 3. The connecting rod 5 is externally fixedly connected to the outside of the vibrator 4. The external side of the driving bevel gear 14 is meshed with a driven bevel gear 15, which changes the direction of the power transmitted from the driving bevel gear 14 again, so that it can adapt to the movement direction requirements of the rotating rod 16 and the brush plate 17. In cooperation with the driving bevel gear 14, the driven bevel gear 15 converts the original power of the motor 12 into a power form more suitable for cleaning operation, providing a stable power source for the rotational movement of the brush plate 17.
[0040] A rotating rod 16 is fixedly connected to the outer side of the driven bevel gear 15. The power transmitted from the driven bevel gear 15 is transmitted to the brush plate 17, which rotates under the drive of the driven bevel gear 15, causing the brush plate 17 to rotate around the inner wall of the seed metering chamber 1. This allows the bristles on the brush plate 17 to effectively clean the inner wall of the seed metering chamber 1. The rotating rod 16 is rotatably connected to the brush plate 17. Driven by the rotating rod 16, the brush plate 17 rotates close to the inner wall of the seed metering chamber 1, using the friction and sweeping action of the bristles to thoroughly remove seeds, impurities, and other dirt adhering to the inner wall. The rotational movement of the brush plate 17 can cover all areas of the inner wall of the seed metering chamber 1, ensuring the comprehensiveness and efficiency of the cleaning work.
[0041] The brush plate 17 is slidably connected to the outside of the screen 6. The seed dispensing chamber 1 is fixedly connected to the outer side of the shell 1. The shell 18 is used to fix and protect the internal motor 20, transmission shaft 21, and seed inner disc 23, preventing damage from external objects. At the same time, the shell 18 also provides a relatively enclosed working space for the cleaning mechanism, reducing the entry of dust and debris and ensuring the smooth progress of the cleaning work. The outer shell 19 is fixedly connected to the outer side of the shell 18, which further protects the internal components of the cleaning mechanism.
[0042] Reference Figures 4 to 5 A motor 20 is fixedly connected to the internal space of the outer shell 2 19 to provide power for the cleaning mechanism, drive the transmission shaft 21 and the seed inner discs 23 to rotate, thereby cleaning and screening the seeds in the seed dispensing chamber 1. The output end of the motor 20 is rotatably connected to the transmission shaft 21, which transmits the power of the motor 20 to the seed inner discs 23, causing the seed inner discs 23 to rotate at a certain speed and direction, thereby cleaning and screening the seeds in the seed dispensing chamber 1. A large seed inner disc 22 is fixedly connected to the outer side of the transmission shaft 21 to ensure that the seeds can flow and be discharged smoothly in the disc, ensuring that large seeds can be discharged smoothly and evenly, and ensuring that the seeds do not leak.
[0043] A small seed inner disc 23 is fixedly connected to the outer side of the second drive shaft 21. It works in conjunction with the large seed inner disc 22 and rotates under the drive of the second drive shaft 21 to further screen and clean the seeds in the seed dispensing chamber 1, separating out the smaller seeds and discharging them through the small seed outlet 25. The outer side of the large seed inner disc 22 is rotatably connected to the inside of the housing 18, and the outer side of the small seed inner disc 23 is rotatably connected to the inside of the housing 18. The bottom of the large seed inner disc 22 has a large seed outlet 24 to transport the screened large seeds to the sowing position. A sealing device is installed at the connection between the large seed outlet 24 and the connecting pipe to prevent seed leakage.
[0044] The bottom of the small seed inner plate 23 is provided with a small seed outlet 25, which transports the screened small seeds to the corresponding sowing position. A sealing device is also installed at the connection between the small seed outlet 25 and the connecting pipe to prevent seed leakage. The large seed outlet 24 is opened on the outside of the outer side of the housing 18, and the small seed outlet 25 is opened on the outside of the outer side of the housing 18.
[0045] Working principle: Seeds enter the seed dispensing chamber 1 through the seed inlet 2. The vibrating screening mechanism in the seed dispensing chamber 1 then starts working. The vibrator 4 in the drive component provides power for screening. The vibration is transmitted to the screen 6 through the connecting rod 5, causing the screen 6 to vibrate at high frequency. When the screen 6 vibrates, the seeds falling on it are screened out according to the different sizes of the screen holes. Larger seeds are screened out through the large seed screen 9, while smaller seeds are screened out through the small seed screen 10. At the same time, the vibration spring 7 on the outside of the screen 6 plays a buffering and shock absorption role during the vibration process, ensuring that the screen 6 vibrates smoothly. The large and small seeds screened out are separated into different areas in the seed dispensing chamber 1 by the partition plate 8 at the bottom of the screen 6, thereby realizing multi-stage screening and seed dispensing.
[0046] Electrical energy is converted into mechanical energy, driving the drive shaft 13, which is rotatably connected to it, to rotate. The drive shaft 13 drives the active bevel gear 14, which is fixedly connected to its outer side, to rotate. The active bevel gear 14, through meshing with the driven bevel gear 15, changes the direction of the power and reduces speed and increases torque, driving the driven bevel gear 15 to rotate. After the driven bevel gear 15 rotates, it drives the rotating rod 16, which is fixedly connected to it, to rotate. The rotating rod 16 drives the brush plate 17, which is rotatably connected to it, to rotate close to the inner wall of the seed metering chamber 1. The bristles on the brush plate 17 use friction and sweeping action to remove seeds, impurities and other dirt attached to the inner wall of the seed metering chamber 1. The rotation of the brush plate 17 can cover all areas of the inner wall of the seed metering chamber 1, completing a comprehensive cleaning. At the same time, the outer side of the brush plate 17 slides outside the screen 6.
[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A multi-stage seed metering device for improving the uniformity of seed distribution, comprising a seed metering bin (1), characterized in that: The top of the seed sowing bin (1) is fixedly connected with a seed inlet (2), the inside of the seed sowing bin (1) is provided with a vibrating screening mechanism, and the inside of the seed sowing bin (1) is provided with a cleaning mechanism. The vibrating screening mechanism comprises a baffle (3), the inside of the baffle (3) is fixedly connected with a driving assembly, the top of the driving assembly is fixedly connected with a connecting rod (5) in a space area, the top of the connecting rod (5) is fixedly connected with a mesh screen (6) in a space area, the outside of the mesh screen (6) is fixedly connected with a vibrating spring (7) on one side, the bottom of the mesh screen (6) is fixedly connected with a partition plate (8) in a space area, a large seed sieve opening (9) is formed in the inside of the mesh screen (6) on one side, a small seed sieve opening (10) is formed in the inside of the mesh screen (6) on one side, the outside of the baffle (3) is fixedly connected with the inside of the seed sowing bin (1) on one side, the outside of the vibrating spring (7) is fixedly connected with the inside of the baffle (3), and the outside of the partition plate (8) is fixedly connected with the inside of the seed sowing bin (1) in a space area.
2. The multi-stage seed meter of claim 1, wherein: The cleaning mechanism comprises an outer shell one (11), the inside of the outer shell one (11) is fixedly connected with a motor one (12) in a space area, the output end of the motor one (12) is rotatably connected with a transmission shaft one (13), the outside of the transmission shaft one (13) is fixedly connected with a driving bevel gear (14) on one side, and the outside of the outer shell one (11) is fixedly connected with the outside of the seed sowing bin (1) on one side.
3. The multi-stage seed meter of claim 1, wherein: The driving assembly comprises a vibrator (4), the outside of the vibrator (4) is fixedly connected with the inside of the baffle (3), and the outside of the connecting rod (5) is fixedly connected with the outside of the vibrator (4).
4. The multi-stage seed meter of claim 2, wherein: The outside of the driving bevel gear (14) is meshedly connected with a driven bevel gear (15) on one side, the outside of the driven bevel gear (15) is fixedly connected with a rotating rod (16) on one side, the outside of the rotating rod (16) is rotatably connected with a brush plate (17), and the outside of the brush plate (17) is slidably connected with the outside of the mesh screen (6).
5. The multi-stage seed meter of claim 1, wherein: The outside of the seed sowing bin (1) is fixedly connected with a shell (18), and the outside of the shell (18) is fixedly connected with an outer shell two (19).
6. The multi-stage seed meter of claim 5, wherein: The inside of the outer shell two (19) is fixedly connected with a motor two (20) in a space area, and the output end of the motor two (20) is rotatably connected with a transmission shaft two (21).
7. The multi-stage seed meter of claim 6, wherein: The outside of the transmission shaft two (21) is fixedly connected with a large seed inner disc (22) on one side, and the outside of the transmission shaft two (21) is fixedly connected with a small seed inner disc (23) on one side, the outside of the large seed inner disc (22) is rotatably connected with the inside of the shell (18), and the outside of the small seed inner disc (23) is rotatably connected with the inside of the shell (18).
8. The multi-stage seed meter of claim 7, wherein: The bottom of the large seed inner disc (22) is provided with a large seed outlet (24), the bottom of the small seed inner disc (23) is provided with a small seed outlet (25), the outside of the large seed outlet (24) is formed on the outside of the shell (18) on one side, and the outside of the small seed outlet (25) is formed on the outside of the shell (18) on one side.