Hand-held seeder for micro-seed with adjustable seeding rate
By designing a handheld seeder with adjustable seed sowing rate for micro-seeds, and utilizing a sowing rod and seeding rate control mechanism, precise seeding rate control for seeds such as golden lotus is achieved, solving the problem of uneven sowing by manual methods and improving seedling uniformity and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA AUTONOMOUS REGION ACAD OF FORESTRY SCI
- Filing Date
- 2025-09-04
- Publication Date
- 2026-07-24
AI Technical Summary
In the cultivation of medicinal plants and ornamental flowers, tiny seeds such as those of nasturtiums are difficult to sow mechanically, and it is difficult to control the amount of seeds evenly when sowing manually, resulting in uneven sowing and difficulty in estimating the germination rate.
A handheld seeder with adjustable seed quantity for micro-seeds was designed, comprising components such as a seed storage cylinder, a seeding rod, a seeding hole, a seed quantity control mechanism, a stop bar, a guide bar, and a spring. The seed quantity can be precisely controlled by adjusting the opening and closing of the seeding hole, avoiding accidental hand operation.
It enables precise control of the sowing amount of tiny seeds, improves seedling uniformity and sowing efficiency, and solves the problem of uneven sowing by manual methods.
Smart Images

Figure CN224538785U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sowing technology, specifically to a handheld seeder with adjustable seed quantity for micro-seeds. Background Technology
[0002] In the cultivation of medicinal plants and ornamental flowers, plants with tiny seeds, such as golden lotus, are not suitable for direct sowing in the field due to their small size and weak ability to emerge from the soil. Therefore, the seeds need to be sown in seedling trays for cultivation. However, seedling cultivation in seedling trays is difficult to mechanize and generally requires manual operation. Because the seeds are small, it is difficult to separate them clearly. Sowing the seeds one by one in the substrate is time-consuming and laborious. Sowing in clumps makes it difficult to control the amount of seeds taken each time, making it difficult to accurately control the sowing amount and estimate the germination rate. Therefore, there is an urgent need for a handheld seeder with adjustable sowing amount for tiny seeds. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a reasonably designed handheld seeder with adjustable seeding rate for small-grain seeds, thereby solving the aforementioned problems.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: it includes a seed storage cylinder and a connecting cover, with the connecting cover screwed onto the lower end of the seed storage cylinder via threads. It also includes: The seeding rod is movably inserted into the seed storage cylinder and the connecting cover. Several seeding holes with rounded corners are opened on the seeding rod at the inner side of the connecting cover. The seeding rod is equipped with a seeding quantity control mechanism connected to the seeding holes. A fixed plate is fixedly installed inside the seed storage cylinder and is movably sleeved on the sowing rod. A movable plate is fixedly sleeved on the sowing rod and is movably installed inside the seed storage cylinder. A No. 1 spring connected to the fixed plate is fixedly installed at the bottom of the movable plate. The pressing plate is fixedly installed at the upper end of the sowing rod.
[0005] Furthermore, the seeding rate control mechanism includes: The baffles are of several types and are movably installed in the strip-shaped grooves opened above the seeding holes on the seeding rod. The bottom of the baffles is engaged with and abuts against the seeding holes. A control block is fixedly installed on the side wall of the baffles and is located below the pressing plate. The guide strips are of several types and are fixedly installed on the two side walls of several baffles. The guide strips are movably installed in the guide grooves opened on the inner wall of the strip grooves. Two grooves are opened on the inner wall of the strip grooves. The second spring, which consists of several springs, is fixedly installed in several control blocks. One end of the second spring is fixedly provided with a limit block, and one end of the limit block passes through the stop bar and is configured to cooperate with the groove.
[0006] Furthermore, the seeding rod has several partitions with rounded corners, and the partitions are located between adjacent control blocks.
[0007] Furthermore, a fixed cylinder is fixedly installed on the upper part of the movable plate, and a movable cylinder is rotatably sleeved on the fixed cylinder via a thread, with several control blocks located inside the movable cylinder.
[0008] Furthermore, a rubber ring is fixedly installed on the upper part of the movable cylinder, and the rubber ring is arranged to abut against the bottom of the pressing plate.
[0009] Furthermore, a rubber sleeve is fixedly fitted onto the movable cylinder, and the rubber sleeve has anti-slip texture.
[0010] Compared with the prior art, the beneficial effects of this utility model are: the handheld seeder with adjustable seed sowing amount of micro-seeds described in this utility model can accurately control the single sowing amount of micro-seeds such as golden lotus, effectively solving the problems of uneven sowing amount and low efficiency in manual sowing. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 This is a cross-sectional view of the seed storage cylinder, connecting cover, fixed cylinder, and movable cylinder in this utility model.
[0013] Figure 3 This is an exploded view of the parts of the sowing rod, the sowing quantity control mechanism, and the partition in this utility model.
[0014] Figure 4 yes Figure 3 Enlarged view of part A in the image.
[0015] Explanation of reference numerals in the attached figures: 1. Seed storage cylinder; 2. Connecting cover; 3. Seeding rod; 4. Seeding hole; 5. Seeding amount control mechanism; 5. Stop bar; 5-1. Strip groove; 5-2. Control block; 5-3. Guide bar; 5-4. Guide groove; 5-5. No. 2 spring; 5-6. Limiting block; 5-7. Groove; 5-8. Fixing plate; 6. Movable plate; 7. No. 1 spring; 8. Pressing plate; 9. Partition plate; 10. Fixing cylinder; 11. Movable cylinder; 12. Rubber ring; 13. Rubber sleeve; 14. Detailed Implementation
[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0017] like Figures 1-3 As shown, this specific embodiment adopts the following technical solution: it includes a seed storage cylinder 1 and a connecting cover 2, with the connecting cover 2 screwed onto the lower end of the seed storage cylinder 1: It also includes: The sowing rod 3 is movably inserted into the seed storage cylinder 1 and the connecting cover 2. Several sowing holes 4 are opened at the same rounded corners on the inner side of the connecting cover 2. The diameter of the sowing holes 4 is larger than the particle size of the seeds, so that only one seed can enter the sowing hole 4. The sowing rod 3 is provided with a sowing amount control mechanism 5 connected to the sowing holes 4. Fixed plate 6 is fixedly installed inside the seed storage cylinder 1 and is movably sleeved on the sowing rod 3. A movable plate 7 is fixedly sleeved on the sowing rod 3 and is movably installed inside the seed storage cylinder 1. A No. 1 spring 8 connected to the fixed plate 6 is fixedly installed at the bottom of the movable plate 7. Pressing plate 9, which is fixedly installed at the upper end of the sowing rod 3; The seeding rate control mechanism 5 includes: A number of baffles 5-1 are movably installed in the strip grooves 5-2 opened above the seeding holes 4 on the seeding rod 3. The bottom of the baffles 5-1 is engaged with and abuts against the seeding holes 4. A control block 5-3 is fixedly installed on the side wall of the baffles 5-1 and is located below the pressing plate 9. Several partitions 10 are evenly distributed on the seeding rod 3 and are located between adjacent control blocks 5-3. The partitions 10 can separate adjacent control blocks 5-3 to avoid accidental adjustment caused by the hand contacting the adjacent control blocks 5-3 when adjusting the height of a certain control block 5-3. Guide strip 5-4, there are several guide strips 5-4, which are fixedly installed on the two side walls of several baffles 5-1 respectively, and the guide strip 5-4 is movably installed in the guide groove 5-5 opened on the inner wall of the strip groove 5-2. Two grooves 5-8 are opened on the inner wall of the strip groove 5-2. Several springs 5-6 are fixedly installed within several control blocks 5-3. One end of each spring 5-6 has a limiting block 5-7 fixedly installed. One end of the limiting block 5-7 passes through a stop strip 5-1 and engages with a groove 5-8. The stop strip 5-1 blocks the opening of the sowing hole 4. By adjusting the position of the stop strip 5-1, the opening and closing of the sowing hole 4 can be controlled, thereby controlling the sowing amount during a single sowing. A fixed cylinder 11 is fixedly installed on the upper part of the movable plate 7. A movable cylinder 12 is threadedly fitted onto the fixed cylinder 11. Several control blocks 5-3 are located inside the movable cylinder 12. The movable cylinder 12 can realize the control of the several control blocks 5-3. The protective barrier 3 prevents the operator's hand from accidentally contacting the control block 5-3 during the sowing process, thus avoiding misadjustment. A rubber ring 13 is fixedly installed on the upper part of the movable cylinder 12. The rubber ring 13 is set to abut against the bottom of the pressing plate 9. The movable cylinder 12 can squeeze the rubber ring 13 between the pressing plate 9, so that the rubber ring 13 can generate a continuous elastic force, increasing the friction between the movable cylinder 12 and the pressing plate 9, and preventing the movable cylinder 12 from becoming loose. A rubber sleeve 14 is fixedly fitted on the movable cylinder 12. The rubber sleeve 14 has anti-slip texture. The cooperation between the rubber sleeve 14 and the anti-slip texture can increase the friction generated between the operator's hand and the movable cylinder 12 when rotating it, so as to avoid hand slippage.
[0018] When using this utility model, unscrew the connecting cover 2 from the seed storage cylinder 1, then pour the seeds into the seed storage cylinder 1, then put the connecting cover 2 on the sowing rod 3 and tighten it with the seed storage cylinder 1. Then turn the connecting cover 2 downwards. At this time, the seeds in the seed storage cylinder 1 will accumulate in the lower part of the inside and in the connecting cover 2, and the seeds will enter the sowing hole 4. Then, align the lower end of the sowing rod 3 with the pit in the seed tray, and press the pressing plate 9. The pressing plate 9 drives the sowing rod 3 to move downwards. The sowing rod 3 drives the movable plate 7 to move downwards and compress the first spring 8. Several sowing holes 4 on the sowing rod 3 are exposed to the outside of the connecting cover 2. Then the seeds in the sowing holes 4 will fall into the pit in the seed tray to achieve single sowing. Then release the pressing plate 9 so that the first spring 8 returns to its original position and extends, pushing the movable plate 7 upwards. The movable plate 7 drives the sowing rod 3 upwards, so that the sowing holes 4 re-enter the connecting cover 2 to replenish the seeds. When it is necessary to adjust the seeding amount per seeding, the movable cylinder 12 can be rotated to move it downwards, exposing several control blocks 5-3. Then, the control blocks 5-3 can be used to drive the baffle 5-1 to move up and down, changing the opening or closing state of the seeding hole 4, thereby adjusting the seeding amount per seeding. During this adjustment process, the rebound force applied to the limiting block 5-7 by the second spring 5-6 can make the limiting block 5-7 abut against the groove 5-8, thereby limiting the height position of the control block 5-3 and the baffle 5-1 after adjustment.
[0019] Compared with the prior art, the beneficial effects of this utility model are: The combination structure of the sowing hole 4 and the baffle 5-1 on the sowing rod 3 can accurately control the amount of seeds sown at one time, effectively solving the problem of uneven sowing amount in manual sowing and significantly improving the uniformity of seedling emergence. During sowing, several control blocks 5-3 can be enclosed inside the movable cylinder 12 to prevent accidental contact between the hands and control blocks 5-3 during operation, thus avoiding unintentional changes in the sowing amount and ensuring the stability of sowing. When the rubber ring 13 is compressed by the movable cylinder 12 and the pressing plate 9, it can generate a continuous elastic force, which increases the friction between the movable cylinder 12 and the pressing plate 9 and prevents the movable cylinder 12 from becoming loose. The partition 10 can separate adjacent control blocks 5-3 to prevent accidental adjustment caused by the hand coming into contact with the adjacent control block 5-3 when adjusting the height of a certain control block 5-3.
[0020] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A handheld seeder with adjustable seed quantity for small-grain seeds, comprising a seed storage cylinder (1) and a connecting cover (2), wherein the lower end of the seed storage cylinder (1) is screwed with the connecting cover (2). Its features are, It also includes: The seeding rod (3) is movably inserted into the seed storage cylinder (1) and the connecting cover (2). Several seeding holes (4) are opened on the seeding rod (3) at the inner side of the connecting cover (2) with rounded corners. The seeding rod (3) is provided with a seeding quantity control mechanism (5) connected to the seeding holes (4). Fixed plate (6), the fixed plate (6) is fixedly installed inside the seed storage cylinder (1), and the fixed plate (6) is movably sleeved on the sowing rod (3). A movable plate (7) is fixedly sleeved on the sowing rod (3). The movable plate (7) is movably installed inside the seed storage cylinder (1). A No. 1 spring (8) connected to the fixed plate (6) is fixedly installed at the bottom of the movable plate (7). Pressing plate (9), which is fixedly installed at the upper end of the sowing rod (3).
2. The handheld seeder with adjustable seed quantity for micro-seeds according to claim 1, characterized in that: The seeding rate control mechanism (5) includes: The baffle (5-1) consists of several baffles, which are movably installed in the strip groove (5-2) opened above the seeding hole (4) on the seeding rod (3). The bottom of the baffle (5-1) is engaged with the seeding hole (4). A control block (5-3) is fixedly installed on the side wall of the baffle (5-1), and the control block (5-3) is located below the pressing plate (9). Guide strip (5-4), there are several guide strips (5-4), which are fixedly installed on the two side walls of several baffles (5-1), and the guide strip (5-4) is movably installed in the guide groove (5-5) opened on the inner wall of the strip groove (5-2), and two grooves (5-8) are opened on the inner wall of the strip groove (5-2). The second spring (5-6) consists of several springs, which are fixedly installed in several control blocks (5-3). One end of the second spring (5-6) is fixedly provided with a limit block (5-7). One end of the limit block (5-7) passes through the stop bar (5-1) and is configured to cooperate with the groove (5-8).
3. The handheld seeder with adjustable seed quantity for micro-seeds according to claim 2, characterized in that: The seeding rod (3) has several partitions (10) with rounded corners, and the partitions (10) are located between adjacent control blocks (5-3).
4. The handheld seeder with adjustable seed quantity for micro-seeds according to claim 2, characterized in that: A fixed cylinder (11) is fixedly installed on the upper part of the movable plate (7), and a movable cylinder (12) is rotatably mounted on the fixed cylinder (11) by means of a thread. Several control blocks (5-3) are all located inside the movable cylinder (12).
5. The handheld seeder with adjustable seed quantity for micro-seeds according to claim 4, characterized in that: A rubber ring (13) is fixedly installed on the upper part of the movable cylinder (12), and the rubber ring (13) is set to abut against the bottom of the pressing plate (9).
6. The handheld seeder with adjustable seed quantity for micro-seeds according to claim 4, characterized in that: A rubber sleeve (14) is fixedly fitted on the movable cylinder (12), and the rubber sleeve (14) has anti-slip texture.