Adjustable air-suction type precision seeding monomer

Abstract

The utility model belongs to the field of agricultural seeding machinery, and discloses an adjustable air-suction type precision seeding unit which comprises a seeding disc, a seeding unit, a vacuum chamber, a seeding disc and a seed scraper, the hole diameter of the seeding tray is flexibly adjusted according to the sizes and shapes of different seeds, so that the seeding accuracy and adaptability are realized; the seed metering single body is connected with a high-speed fan so as to receive negative pressure generated by the high-speed fan; the vacuum chamber is positioned in the seed metering single body, is positioned below the seed metering disc and is used for transmitting negative pressure to the seed metering disc; the seed metering disc is a disc rotating through a driving device, and a plurality of holes are formed in the surface of the seed metering disc and are used for adsorbing and rotating seeds; and the seed scraper is positioned below the seed metering disc, is fixed at the bottom of the seeder through a connecting device, and is used for pushing the seeds which are rotated out of the vacuum chamber into the seeding furrows. According to the utility model, by adjusting the negative pressure generated by the high-speed fan and the rotating speed of the seed-metering disc, accurate control on seeds can be realized, and the seeding efficiency and success rate are improved.

Description

Technical Field

[0001] The utility model belongs to the field of agricultural sowing machinery, in particular to an adjustable air suction type precision sowing unit. Background Art

[0002] At present, pneumatic seeders are widely used in the agricultural field. Their working principle is to transmit the negative pressure to the vacuum chamber of the seeding unit through the negative pressure generated by the high-speed fan. When the seed disc starts to rotate, the seeds are adsorbed on the seed disc under the negative pressure of the vacuum chamber and rotate with the seed disc. When the seeds are rotated out of the vacuum chamber, they are no longer subject to the negative pressure. Relying on their own weight or the action of the scraper, the seeds fall into the sowing furrow to complete precise sowing. However, traditional pneumatic seeders have some limitations in the sowing process, such as inflexible adjustment of seed size and susceptibility to interference from impurities. The details are as follows:

[0003] First, the known technology includes the traditional air-suction seeder design. Traditional air-suction seeders usually use a fixed seeding plate, and the aperture size in the seeding plate cannot be adjusted, which limits the flexibility and applicability of the seeder. The technology of sucking seeds through airflow and accurately sowing them has been widely used, but it still has shortcomings in terms of adaptability to seed size and type.

[0004] Secondly, the technical solution in the prior art that is closest to the proposal of this application is to solve the problem that the size of the seeding plate hole in the air-suction seeder cannot be adjusted. There have been some attempts in the prior art, such as a mechanism for adjusting the size of the seeding plate hole, but these technical solutions are usually complicated, inconvenient to operate, and there is a problem of inaccurate adjustment. In addition, some technical solutions require the replacement of seeding plates of different specifications, which increases the complexity and cost of operation.

[0005] In order to solve these problems, the utility model proposes a novel air-suction seeder with more flexible and accurate sowing characteristics. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides an adjustable air-suction precision seeding unit.

[0007] The utility model is realized in this way: an adjustable air suction precision sowing unit, the sowing unit comprises: a sowing disc, a seeding unit, a vacuum chamber, a seeding disc, and a seed scraper;

[0008] The seeding disc can flexibly adjust the aperture of the seeding disc according to the size and shape of different seeds to achieve precision and adaptability of seeding; the seeding unit is connected to a high-speed fan to receive the negative pressure generated by the high-speed fan; the vacuum chamber is located inside the seeding unit and below the seeding disc, and is used to transmit negative pressure to the seeding disc; the seeding disc is a disc rotated by a driving device, and a plurality of holes are designed on its surface for adsorbing and rotating seeds; the seed scraper is located below the seeding disc and is fixed to the bottom of the seeder through a connecting device, and is used to push the seeds that have been rotated out of the vacuum chamber into the seeding furrow;

[0009] The connection relationship between the structures is achieved by threaded connection, welding connection, etc., which ensures the stable operation and efficient seeding of the seeder.

[0010] Furthermore, the high-speed fan is connected to the seeding unit through a pipeline, and a regulating valve is provided in the pipeline.

[0011] Furthermore, the seeding disc is connected to the driving device via a gear system, and the gear system can adjust the rotation speed of the seeding disc to meet the sowing requirements of different seeds.

[0012] Furthermore, the position and angle of the seed scraper can be fine-tuned by adjusting the screw.

[0013] Furthermore, the novel adjustable hole size seeding tray adopts an additional tapered iris mechanism, which can adjust the diameter of the hole by turning a knob to achieve flexible adjustment of the seeding tray aperture.

[0014] Furthermore, the main structure of the seeding plate is made of wear-resistant and corrosion-resistant engineering plastic material, has a disc shape, and is designed with multiple holes on the surface, each of which has a diameter of about 2 mm.

[0015] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the utility model are as follows:

[0016] First, the utility model proposes a new type of adjustable air-suction precision seeding unit design, in which the added tapered iris mechanism can adjust the size of the hole according to the size and shape of the seed. Through the adjustment mechanism of the knob connected to the gear plate, the operator can easily adjust the size of the seeding plate hole as needed, thereby achieving a precise seeding effect. Compared with the existing technical solutions, this application proposal is simpler, more flexible, and more intuitive to operate, which can effectively improve the accuracy and efficiency of seeding.

[0017] Seeding plate with adjustable hole size: The hole size of the seeding plate of a traditional air-suction seeder is usually fixed and cannot be adjusted according to the seed size. The adjustable hole size seeding plate in the utility model adopts an additional tapered iris mechanism, and the operator can adjust the diameter of the hole by turning the knob. The advantage of this improvement is that the hole size of the seeding plate can be flexibly adjusted according to the size and shape of different seeds, thereby achieving accuracy and adaptability in seeding. Therefore, this improvement makes the seeder more flexible and easy to use, and can improve the success rate of seeding.

[0018] Seed scraper design: In traditional air-suction seeders, seeds are easily disturbed by impurities after being transferred out of the vacuum chamber, which affects the sowing effect. In the utility model, a seed scraper is designed to push the seeds that have been transferred out of the vacuum chamber into the sowing furrow. The advantage of this improvement is that the design of the seed scraper ensures that the seeds can fall into the sowing furrow smoothly, avoiding the seeds from being disturbed by impurities, thereby improving the efficiency and success rate of sowing. Therefore, the addition of the seed scraper makes the work of the seeder more stable and reliable.

[0019] Ease of operation: Traditional air-suction seeders are usually complicated to operate and inaccurately adjusted. Operators need to replace seeding discs of different specifications, which increases the complexity and cost of operation. The adjustable hole size seeding disc and seed scraper design in the utility model make the operation of the seeder easier. The operator only needs to adjust the diameter of the hole by turning the knob to adjust the size of the seeding disc hole as needed, without having to replace seeding discs of different specifications. This ease of operation improves the practicality and efficiency of the seeder.

[0020] Therefore, by targeting the deficiencies of the prior art, the various improvements in this technical solution effectively solve the problems of inflexible seed size adjustment, susceptibility to interference from impurities, and complex operation, and has the advantages of low cost, simple structure, good performance, easy use, and high production quality.

[0021] Second, the adjustable air-suction precision seeding unit provided by the utility model has flexible and accurate seeding characteristics. By adjusting the negative pressure generated by the high-speed fan and the rotation speed of the seeding disc, accurate control of the seeds can be achieved. At the same time, the design of the seed scraper ensures that the seeds can fall smoothly into the seeding furrow, improving the efficiency and success rate of seeding.

[0022] Third, as auxiliary evidence of the inventiveness of the claims of the utility model, it is also reflected in the following important aspects:

[0023] (1) The expected benefits and commercial value of the technical solution of this utility model after transformation are:

[0024] Improve agricultural production efficiency: Traditional air-suction seeders have the problem of inflexible seed size adjustment, while the utility model introduces an adjustable hole size seeding disc and an iris mechanism, which can be accurately adjusted according to the size of different seeds. This will greatly improve seeding efficiency, reduce seed waste, thereby reducing production costs and improving agricultural production benefits.

[0025] Saving resources: Since the utility model can sow seeds more accurately, it reduces seed waste and reduces sowing costs. At the same time, due to the improvement of sowing efficiency, the time and labor costs required by farmers in the sowing process will also be reduced, further saving resources.

[0026] Increase the yield and quality of agricultural products: Through the use of the utility model seeder, the uniform distribution and appropriate depth of seeds during the sowing process can be ensured, thereby improving the emergence rate and growth of crops. This will directly lead to an increase in the yield and quality of agricultural products, and help improve the market competitiveness of agricultural products.

[0027] Expand market space: This utility model will attract more attention and favor from agricultural producers and agricultural machinery dealers. With the improvement of market recognition, agricultural machinery equipment manufacturers will have more opportunities to apply this technology in actual production, thereby expanding market space and gaining a larger market share. (2)

[0029] The traditional air-suction seeder has the problem of being inflexible in adjusting the seed size, while the utility model introduces an adjustable hole size seeding disc and an iris mechanism. (3)

[0031] Traditional air-suction seeders have great limitations in adjusting seed size, which affects the efficiency and success rate of seeding. The adjustable hole size seeding disc and iris mechanism of the utility model effectively solve this technical problem and provide a reliable technical means for achieving precise seeding. (4)

[0033] The traditional concept is that the aperture size of the seeding disk of the air-suction seeder cannot be adjusted, but the utility model introduces an iris mechanism, so that the aperture size of the seeding disk can be flexibly adjusted according to the seed size. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a front view of a seeding tray provided by an embodiment of the utility model;

[0035] Figure 2 It is a side view of a seeding tray provided by an embodiment of the utility model;

[0036] Figure 3 This is a structural diagram of a seeding unit provided in an embodiment of the utility model;

[0037] Figure 4 This is a structural diagram of an adjustable air-suction precision seeding unit provided by an embodiment of the utility model;

[0038] Figure 5 This is a rear view of an adjustable air suction precision seeding unit provided by an embodiment of the utility model;

[0039] In the figure: 1. Knob; 2. Turnbar; 3. Gear plate; 4. Circular metal sheet with external gear; 5. Fixed circular metal sheet; 6. Metal shaft; 7. High-speed fan; 8. Vacuum chamber; 9. Seed plate; 10. Seed scraper. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0041] The adjustable air-suction precision seeding unit provided by the utility model solves multiple problems in the prior art through a series of structural designs and functional implementations, and achieves significant technical progress.

[0042] First, in view of the low precision and poor adaptability of existing seeders during seeding, the utility model designs a seeding disc with a flexibly adjustable aperture according to different seed sizes and shapes. This design enables the seeding unit to more accurately adapt to different types of seeds, thereby greatly improving the accuracy and adaptability of seeding.

[0043] Secondly, by connecting the high-speed fan to generate negative pressure on the seeding unit and the vacuum chamber inside the seeding unit, the utility model realizes the uniform transmission of negative pressure on the seeding disc. In this way, the seeds can be more effectively adsorbed on the holes of the seeding disc, improving the stability and reliability of seed adsorption.

[0044] In addition, the driving device drives the seeding disc to rotate, so that the seeds adsorbed on the seeding disc move with the rotation of the seeding disc. When the seeds are rotated out of the vacuum chamber, the seed scraper can accurately push the seeds into the sowing furrow, further improving the accuracy and efficiency of sowing.

[0045] Finally, the connection between the structures is achieved through threaded connection, welding connection, etc., which ensures the stable operation and efficient sowing of the seeder. This stable connection method not only increases the service life of the seeder, but also makes the sowing process more stable and reliable.

[0046] In summary, the utility model solves the problems of the existing seeder in terms of accuracy and adaptability through a series of innovative designs, and has achieved significant technical progress. It not only improves the accuracy and efficiency of sowing, but also enhances the stability and reliability of the seeder, providing a more advanced and efficient sowing equipment for agricultural production.

[0047] The design goal of the adjustable air-suction precision seeding unit of the utility model is to provide a device that can adjust the seeding accuracy and efficiency according to the characteristics of different seeds to meet the needs of seeding of diversified crops. The working principle of the seeding unit is explained in detail below:

[0048] The seeding disc is the core part of the sowing unit, which is responsible for adjusting the aperture according to the size and shape of the seed. The seeding disc adapts to seeds of different sizes through adjustment mechanisms, such as replaceable aperture plates or rotating mechanisms with adjustable apertures, to achieve precise sowing. This design allows farmers to quickly replace seeding discs for different crops, or adjust the aperture of existing seeding discs, so as to adapt to different types of seeds without replacing the entire equipment.

[0049] The seeding unit is connected to a high-speed fan, which uses the negative pressure (i.e. vacuum state) generated by the fan to affect the discharge of seeds. The power and wind speed of the fan can be adjusted to meet the suction requirements of different seeds, thereby controlling the stability of the seeds on the seeding tray and the accuracy of the sowing process.

[0050] The vacuum chamber is located inside the seeding unit, next to the seeding disc. Its main function is to evenly transfer the negative pressure generated by the high-speed fan to the seeding disc. The seeding disc is a rotating disc with multiple precise holes, each corresponding to the position of a seed. When the seeding disc rotates, the vacuum suction force absorbs the seeds on the seeding disc through the holes and brings them to the specified position as the disc rotates.

[0051] The scraper is designed to accurately push the seeds into the seeding furrow after they pass through the seed tray and rotate out of the vacuum chamber. The adjustment of the scraper position ensures that the seeds can be accurately removed from the seed tray and correctly placed into the soil, ensuring consistent planting and optimal growth conditions for the seeds.

[0052] The components of the entire sowing unit are assembled by threaded connection, welding or other mechanical connection methods. This structural design ensures the stability and durability of the equipment during operation, and also facilitates maintenance and component replacement.

[0053] The adjustable air-suction precision seeding unit of the utility model achieves high efficiency and high precision of seed sowing through the sophisticated mechanical structure design and the application of vacuum technology, and is particularly suitable for modern agricultural production that requires high-precision sowing. In addition, its flexible adjustment mechanism also greatly improves the applicability and economy of the equipment, providing strong technical support for agricultural production.

[0054] like Figure 1 As shown, the utility model provides an adjustable air suction precision seeding unit, which comprises: a seeding disc, a seeding unit, a vacuum chamber 8, a seeding disc 9, and a seed scraper 10;

[0055] The seeding disc can flexibly adjust the aperture of the seeding disc according to the size and shape of different seeds to achieve the accuracy and adaptability of seeding; the seeding unit is connected to the high-speed fan 7 to receive the negative pressure generated by the high-speed fan 7; the vacuum chamber 8 is located inside the seeding unit, below the seeding disc 9, and is used to transmit the negative pressure to the seeding disc 9; the seeding disc 9 is a disc rotated by a driving device, and a plurality of holes are designed on its surface for adsorbing and rotating seeds; the scraper 10 is located below the seeding disc, and is fixed to the bottom of the seeder through a connecting device, and is used to push the seeds that have been rotated out of the vacuum chamber 8 into the seeding furrow;

[0056] The connection relationship between the structures is achieved by threaded connection, welding connection, etc., which ensures the stable operation and efficient seeding of the seeder.

[0057] Furthermore, the high-speed fan is connected to the seeding unit through a pipeline, and a regulating valve is provided in the pipeline.

[0058] Furthermore, the seeding disc is connected to the driving device via a gear system, and the gear system can adjust the rotation speed of the seeding disc to meet the sowing requirements of different seeds.

[0059] Furthermore, the position and angle of the seed scraper can be fine-tuned by adjusting the screw.

[0060] Furthermore, the novel adjustable hole size seeding tray adopts an additional tapered iris mechanism, which can adjust the diameter of the hole by turning a knob to achieve flexible adjustment of the seeding tray aperture.

[0061] Furthermore, the main structure of the seeding plate is made of wear-resistant and corrosion-resistant engineering plastic material, has a disc shape, and is designed with multiple holes on the surface, each of which has a diameter of about 2 mm.

[0062] The working principle of this utility model:

[0063] First, according to the size and shape of the seeds to be sown, the knob 1 is turned to drive the gear plate rotating rod 2 in the seeder to rotate, so that the gear plate 3 rotates accordingly, and the outer gear circular metal sheet 4 in each tapered iris mechanism is driven to rotate through gear meshing. Under the joint action of the outer gear circular metal sheet 4 and the fixed circular metal sheet 5, the metal shaft 6 is pulled along the track on the outer gear circular metal sheet 4 to change the size of the tapered hole of the tapered iris mechanism, so as to achieve accurate sowing of seeds of different sizes. The negative pressure generated by the high-speed fan 7 is transmitted to the vacuum chamber 8 through the seeding monomer. Under the action of the negative pressure in the vacuum chamber 8, the seeds are adsorbed in the holes of the seeding disc 9 and move with the rotation of the seeding disc 9. When the seeds are rotated out of the vacuum chamber 8, they are no longer affected by the negative pressure. Through their own weight or the action of the scraper 10, the seeds fall into the sowing furrow to complete the sowing.

[0064] Application scenario: agricultural sowing machinery and equipment

[0065] Implementation scheme: The technical solution of the air-suction seeder of the utility model is applied to corn planting.

[0066] Specific steps and operation process:

[0067] Corn seeds of different seed sizes are selected to simulate actual planting conditions. According to the selected corn seed sizes, the adjustable hole size sowing disc and the iris mechanism of the utility model are used to adjust the aperture size of the sowing disc to ensure that the seeds can be accurately adsorbed and sown.

[0068] Install the adjusted seeding disc on the air-suction seeder, and ensure that the connections between the seeding unit, vacuum chamber, seeding disc, and seed scraper are stable. Start the air-suction seeder to generate negative pressure with the high-speed fan, and transmit the negative pressure to the vacuum chamber of the seeding unit. The seeds are adsorbed on the seeding disc and rotate with the seeding disc. After the seeds are rotated out of the vacuum chamber, they are no longer affected by the negative pressure and fall into the seeding furrow.

[0069] Observe the sowing effect, including the uniform distribution of seeds, sowing density and the landing of seeds. Through field investigation and data statistics, evaluate the advantages of the technical solution of the utility model in sowing effect and sowing efficiency.

[0070] Through the above implementation steps, the following effects are expected to be achieved:

[0071] Precision sowing: Due to the use of adjustable hole size sowing disc and iris mechanism, it can be precisely adjusted according to corn seeds of different sizes to ensure the accuracy and stability of sowing.

[0072] Improve sowing efficiency: The application of new seeders can greatly improve sowing efficiency, reduce seed waste, save labor costs, and improve sowing efficiency and speed.

[0073] Improved sowing quality: Through the evaluation of sowing effect, it is expected that the sowing quality can be improved. The uniform distribution of seeds and the appropriate depth will help improve the emergence rate and growth of corn, thereby improving the yield and quality.

[0074] The embodiments of the present invention have achieved some positive effects during the development or use process, and indeed have great advantages over the prior art. The following content is described in conjunction with data, charts, etc. of the test process.

[0075] Design experiment: Compare the performance of different seeding machine models in seeding accuracy and success rate

[0076] Seeds of the same type and specification were selected and sown using a traditional air-suction seeder and the air-suction seeder of the utility model under the same sowing conditions. Then, the sowing convenience of different seeds, the arrangement of seeds, the adsorption on the sowing tray, the sowing success rate and other indicators were recorded during the sowing process.

[0077] By comparing the experimental results of the two seeders, the advantages of the air-suction seeder of the utility model over the traditional air-suction seeder can be evaluated. If the experimental results show that the seeding disc of the new air-suction seeder absorbs more seeds, has a higher sowing success rate, or the sown seeds are arranged more evenly, these data can be used as evidence to prove the advantages of the utility model.

[0078] Combined with the above design experiments, theoretical analysis of the advantages of the air-suction seeder of the utility model over the prior art can be considered from the following aspects:

[0079] Seeding accuracy and consistency: By adjusting the aperture size of the adjustable hole seeding disc, the seeding aperture can be precisely adjusted according to the size and shape of the seeds, ensuring that the seeds are accurately adsorbed and seeded. Compared with traditional fixed-aperture seeding discs, this flexible adjustment method can improve seeding accuracy and consistency.

[0080] Reduce interference from impurities: The design of the adjustable hole size seeding tray can better adapt to the size and shape of the seeds, ensuring that the seeds can be effectively adsorbed and planted, reducing the interference of external impurities on the sowing process. This can improve the success rate of sowing and the quality of seed growth and development.

[0081] Convenience of operation: By simply turning the knob to adjust the aperture size of the seeding disc, compared with the traditional method of replacing seeding discs of different specifications, the operation process is greatly simplified, and the operator's work difficulty and error rate are reduced.

[0082] The following are two specific embodiments based on the aforementioned adjustable air suction precision seeding unit:

[0083] Example 1: Soybean planting

[0084] Soybean seeds are relatively large and require precise control of planting depth and spacing to ensure good growing conditions and maximized yield.

[0085] 1. Seeding tray adjustment: Select a seeding tray that is suitable for the size of soybean seeds and adjust the aperture to the appropriate size to ensure that the seeds can be accurately adsorbed and will not fall off.

[0086] 2. Fan setting: Adjust the high-speed fan to a moderate negative pressure to meet the suction required by the soybean seeds and avoid seed damage due to excessive suction.

[0087] 3. Seed disc speed: Set the speed of the seed disc to ensure that the seeds can rotate steadily on the seed disc before being discharged to improve the uniformity of sowing.

[0088] 4. Seed scraper adjustment: Adjust the position and angle of the seed scraper to ensure that each seed can be accurately pushed into the soil to the predetermined depth and position.

[0089] 5. Operation and monitoring: Monitor the equipment operating status during the sowing process and adjust parameters to adapt to on-site soil conditions and weather changes.

[0090] This embodiment can significantly improve the emergence rate and yield of soybeans by precisely controlling the sowing process, while reducing seed waste and labor intensity.

[0091] Example 2: Sowing of lawn grass seeds

[0092] Turf grass seeds are small and need to be planted closely together to promote even growth and a nice-looking lawn.

[0093] 1. Seeding plate adjustment: Choose a seeding plate with a small aperture and adjust it to the minimum aperture suitable for grass seeds to ensure that the seeds can be adsorbed individually.

[0094] 2. Fan adjustment: Since grass seeds are light in size, lower the negative pressure of the fan to avoid excessive suction that will cause the seeds to gather or be damaged.

[0095] 3. Precise control of the seed tray: Precisely control the rotation speed and position of the seed tray to ensure that the seeds are evenly arranged and sown at the optimal spacing.

[0096] 4. Fine-tuning of the seed scraper: Fine-tune the seed scraper to ensure that each seed is gently placed on the soil surface without being buried deeply or compacted.

[0097] 5. Real-time monitoring and adjustment: Real-time monitoring of sowing status, and adjustment of parameters as needed to adapt to different environmental conditions and soil types.

[0098] This method of seeding is very effective for establishing high-quality lawns, achieving high efficiency and uniformity of seeding while reducing seed waste.

[0099] These two embodiments demonstrate the applicability and flexibility of the utility model in sowing seeds of different crops, and effectively improve the accuracy and efficiency of sowing.

[0100] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0101] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention shall be covered by the protection scope of the present invention.

Claims

1. An adjustable air suction precision seeding unit, characterized in that: It includes a seeding tray, a seeding unit, a vacuum chamber, a seeding tray and a seed scraper; wherein the seeding tray is designed with an adjustable aperture to accommodate seeds of different sizes and shapes; the seeding unit is connected to a high-speed fan to provide necessary negative pressure; the vacuum chamber is arranged in the seeding unit and below the seeding tray, and is used to transfer the negative pressure to the seeding tray; The seeding disc is rotated by a driving device, and a plurality of holes are arranged on the surface to absorb and rotate the seeds; the seed scraper is arranged under the seeding disc and fixed to the bottom of the seeder through a connecting device, and is used to push the seeds into the sowing furrow.

2. The adjustable air suction precision seeding unit according to claim 1, characterized in that: The high-speed fan is connected to the seeding unit through a pipeline, and a regulating valve is arranged in the pipeline.

3. The adjustable air suction precision seeding unit according to claim 1, characterized in that: The seeding disc is connected to the driving device via a gear system, and the gear system can adjust the rotation speed of the seeding disc to meet the sowing requirements of different seeds.

4. The adjustable air suction precision seeding unit according to claim 1, characterized in that: The position and angle of the seed scraper can be fine-tuned by adjusting the screw.

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