An agricultural seeding device

Abstract

The application provides an agricultural seeding device, belonging to the technical field of seeding equipment, mainly comprising a seeding component and a plough head in front of the seeding component, wherein the seeding component comprises a vertically installed seeding tank, the front side wall of the seeding tank is communicated with the mud discharging end of the top of the plough head, and a ploughing assembly for twisting the soil is arranged at the communication position; the internal space of the seeding tank is divided into two chambers by a horizontally installed sieve plate, the sieve plate is provided with a plurality of sieve holes for seed falling, the plate edge of the sieve plate is slidingly inserted into the tank wall of the seeding tank, the sieve plate is driven by a driving mechanism to slide reciprocatingly in the plane, and in the reciprocating sliding process, the seeds are scattered into the lower chamber, and in the falling process, the seeds are mixed with the flying and scattering soil by the ploughing assembly, and finally, the seeds are dropped into the seeding groove dug by the plough head through the seeding hole at the bottom of the lower chamber. The application can efficiently and uniformly perform strip seeding type continuous seeding.

Description

Technical Field

[0001] This invention belongs to the field of sowing equipment technology, and more specifically, it is an agricultural sowing device. Background Technology

[0002] Seeding equipment is an important component of modern agricultural machinery, used to sow seeds evenly and accurately in the field to improve crop planting efficiency and yield. With the development of agricultural technology, seeding equipment is constantly being updated and iterated, and its level of automation and intelligence is constantly improving, which greatly promotes the transformation of agricultural production towards modernization.

[0003] The most common types of seeding equipment include manual seeders and tractor-trailer seeders. Manual seeders rely on human operation and are commonly found in small farms or family vegetable gardens. They have a relatively simple structure and are suitable for small-scale operations, such as hand-cranked seeders and handheld seed guns. Tractor-drawn seeders are currently the most common type of seeding equipment. They are mainly driven by a tractor to move the seeding components, enabling them to quickly complete seeding tasks over a large area. Based on their working principles, they can be divided into various types, such as single-seed seeders, row seeders, and hill seeders. Among these, row seeders are most widely used for planting crops with fixed row spacing. In row seeders, seeds are sown in a straight line into pre-dug furrows and then covered with soil. However, existing seeders directly scatter seeds into the furrows before covering them with soil. Because fields are not like straight roads, tractors and other mobile equipment cannot maintain a constant speed and experience significant bumps. The traditional seeding structure, where seeds fall naturally from the seed box, causes some seeds to accumulate in the furrows, resulting in uneven seed distribution, insufficient contact with the soil, and an imbalance in subsequent nutrient and water supply, affecting seed germination and the growth of the crop.

[0004] In addition, the existing seeders mentioned above cannot specifically adjust the water and fertilizer application to the soil at the seed implantation site during sowing. On the one hand, water and fertilizer need to be applied separately in the sowing furrow before sowing, which is inefficient. On the other hand, the water and fertilizer application area is easy to spread throughout the field, which cannot effectively supply water and fertilizer to the soil around the seeds for their growth, resulting in low water and fertilizer utilization and significant water and fertilizer waste. Summary of the Invention

[0005] In view of the current state of the technology mentioned in the background, and in order to overcome the corresponding defects in the prior art, the present invention specifically discloses an agricultural sowing device that can better solve the problem that some seeds are overly concentrated and not dispersed enough when the existing seeder is sowing in rows.

[0006] To overcome the deficiencies of the existing technology, those skilled in the art provide the following technical solutions:

[0007] An agricultural seeding device includes a seeding component and a plow head located in front of the seeding component. The seeding component includes a vertically mounted seeding tank, the front side wall of which is connected to the mud discharge end at the top of the plow head, and a harrowing component for crushing the soil is provided at the connection.

[0008] The internal space of the seeding tank is divided into upper and lower compartments by a horizontally installed sieve plate. The sieve plate has several sieve holes for seeds to fall through. The edge of the sieve plate is slidably inserted into the tank wall of the seeding tank. The sieve plate is driven by a drive mechanism to slide back and forth in a plane. During the back and forth sliding process, the seeds are scattered into the lower compartment and, during the falling process, come into face contact with the soil scattering by the harrowing component and mix together. Finally, the seeds fall into the seeding furrow dug by the plow head through the seeding holes at the bottom of the lower compartment.

[0009] Preferably, the driving mechanism is a vibrating motor, or a piston rod that can push the screen plate to move in a planar reciprocating motion.

[0010] Preferably, the sowing hole is connected to a vertically arranged mud discharge pipe, and a mud spraying pipe is fixed at the bottom of the mud discharge pipe perpendicular to it. The bottom of the mud spraying pipe has several mud spraying holes for the mud mixed with seeds to fall, or a mud spraying strip hole arranged along its length. The length direction of the mud spraying pipe is consistent with the width direction of the sowing furrow.

[0011] Furthermore, the mud discharge pipe is fixed on the central upper surface of the mud spraying pipe, and a pair of symmetrically arranged screw conveyors are provided axially inside the mud spraying pipe. The two screw conveyors transport the mud from the center of the mud spraying pipe to both ends.

[0012] Prior to this, the inner area of ​​the plow head is divided into three independent mud discharge troughs by four side plates. Above the harrowing assembly in the middle mud discharge trough, there is an arc-shaped mudguard to prevent soil from splashing outwards. The other two mud discharge troughs on the sides curve and extend toward the edge of the sowing furrow on their respective sides to transport soil to both sides of the sowing furrow.

[0013] Furthermore, a soil-covering plate is fixed behind each of the two sludge discharge troughs on both sides. The two soil-covering plates are arranged in a V-shape, and their ends can touch each other.

[0014] Preferably, the top of the plow head is hinged to the side wall of the seeding container, and a V-shaped spring plate that is always compressed is installed between the two. The inner side of the spring plate has a telescopic rod with one end fixed to the seeding container, and the other end of the telescopic rod is hinged to a slider, which is slidably mounted on the rear surface of the plow head.

[0015] Preferably, the drive mechanism includes a vertically mounted central tube that axially penetrates the sieve plate and is rotatably engaged with the sieve plate; a plurality of stirring rods are arranged around the lower section of the central tube.

[0016] Furthermore, the central pipe is connected to the fertilizer and water delivery hose, and several T-shaped spray pipes connected to it are arranged around the upper section of the central pipe, with spray holes densely distributed on the spray pipes.

[0017] Furthermore, the top of the central tube has a sliding plate that slides in contact with the top of the seeding tank. The central hole of the sliding plate is rotatably connected to the connecting end of the fertilizer and water delivery hose. The connecting end of the fertilizer and water delivery hose is located at the center of a driven external gear ring fixed on the sliding plate. The driven gear is rotatably mounted on a sliding arm and meshes with a driving gear that is also rotatably mounted below the sliding arm. The gear shaft of the driving gear is connected to the main shaft of a drive motor fixedly mounted on the upper surface of the sliding arm. The driving gear meshes with an internal gear ring fixedly mounted on its outer side. The end of the drive motor away from the sliding arm is rotatably mounted below a crossover arm via a connecting arm. One end of the connecting arm is rotatably mounted on the crossover arm at the center of the internal gear ring.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The agricultural sowing device of the present invention uses a method in which a portion of the plowed land is broken up and thrown backward and upward into the sowing tank. The soil in the air inside the sowing tank is pre-mixed with the seeds that are falling, so that the seeds are not concentrated and dispersed in the soil. It is equivalent to sowing the seeds evenly in the soil first. Then, this part of the soil containing the seeds is dispersed and transported to various places at a predetermined depth in the sowing furrow, so that the seeds are more evenly dispersed. Then, the remaining soil is used to backfill and cover the area where the seeds and soil are scattered after mixing, so as to ensure their subsequent germination and growth.

[0019] In addition, because the water and fertilizer are delivered through a central tube, the water and fertilizer can come into contact with and soak the soil mixed with seeds in the lower compartment of the seeding tank. This allows the soil directly applied to the seeds to have considerable fertility and moisture, making the application of water and fertilizer more targeted and direct. On the other hand, the rotation of the central tube, stirring rod, and spray pipes also plays a role in continuously stirring the soil and seed mixture, ensuring that the seeds and soil are mixed as evenly as possible, which also improves the uniformity of sowing to a certain extent.

[0020] Other functions and features of the present invention will be described in detail in the following embodiments to provide a full understanding of the concept of the present invention and to enable its practical application in production. Attached Figure Description

[0021] Figure 1This is a schematic diagram of an overall facade structure of the present invention;

[0022] Figure 2 for Figure 1 A view of the plowshare and its shovel during operation from direction A;

[0023] Figure 3 An enlarged schematic diagram of the connection between the central pipe and the fertilizer delivery hose;

[0024] Figure 4 A simplified top view of a cross-section of the drive mechanism;

[0025] Figure 5 A top view showing the installation of the drive motor in the drive mechanism;

[0026] Figure 6 This is a schematic diagram of a rotating mounting structure for a driven gear and a sliding arm.

[0027] The components include: 1. Seeding tank; 101. Partition plate; 2. Plow head; 201. Mud discharge trough; 3. Screen plate; 4. Harrowing assembly; 5. Mud baffle; 6. Center pipe; 7. Mixing rod; 8. Spraying pipe; 9. Mud discharge pipe; 10. Screw conveyor; 11. Spring plate; 12. Telescopic rod; 13. Slider; 14. Fertilizer and water delivery hose; 15. Driven gear; 16. Sliding plate; 17. Soil cover plate; 18. Sliding arm; 19. Gear shaft mounting hole; 20. Drive motor; 21. Connecting arm; 22. Crossover arm; 23. Internal gear ring; 24. Seeding furrow; 25. Connecting cylinder; 26. Drive gear; 27. Detailed Implementation

[0028] Based on the accompanying drawings of the embodiments of the present invention and the following description, the technical solution of the present invention can be clearly and completely described. However, it should be understood that the embodiments mentioned herein are only one or several specific methods of the present invention, and not all implementation structures or method steps.

[0029] like Figure 1 As shown in this embodiment, an agricultural seeding device, in terms of its structural composition, mainly includes a seeding component and a plow head 2 located in front of the seeding component. When this agricultural seeding device is installed on existing mobile vehicles such as tractors or agricultural vehicles and moves forward, the plow head 2 will first plow up the soil, turning the land and digging a seeding furrow 25 for sowing. Specifically, in this embodiment, as... Figure 1As shown, the sowing components used include a vertically installed sowing tank 1. The sides of the sowing tank 1 around its bottom can be conical. The front side wall of the sowing tank 1 is connected to the mud discharge end at the top of the plow head 2, and a harrowing component 4 for crushing the soil is provided at the connection point. This allows the soil clods plowed up by the plow head 2 to be gradually transported upwards and further crushed by the harrowing component 4, before being thrown backwards and upwards out of the plow head 2. Meanwhile, in this embodiment, it can be optionally designed that the internal space of the sowing tank 1 is divided into upper and lower compartments by a partition 101. The partition 101 has several seed dropping holes for seeds to fall into, and a sieve plate 3 with several sieve holes is slidably installed on the bottom surface of the partition 101. These sieve holes are not only used for seed falling, but also for screening seed shape and size to prevent seeds that do not meet the size requirements or other debris from falling into the lower compartment. Specifically, the sieve plate 3 has a smooth surface and is set in close contact with the bottom surface of the partition 101. It can slide quickly relative to the bottom surface of the partition 101, or the sieve plate 3 can be set directly. As the element that directly carries the seeds, when the sieve plate 3 moves horizontally back and forth in the plane, the seeds will fall directly from the sieve opening. Regardless of the method used, the seeds will eventually scatter from the sieve opening. The partition 101 is chosen to separate the sowing tank 1 to improve the load-bearing capacity and the flexibility of the sieve plate 3's movement. This avoids excessive pressure on the sieve plate 3 when sowing large quantities of seeds at high speed, due to too many seeds in the upper compartment of the sowing tank 1, which would make the movement of the sieve plate 3 cumbersome and inflexible. In practice, during installation, the edge of the sieve plate 3 is required to slide into the tank wall of the sowing tank 1. That is, no matter where the sieve plate 3 is moved, it always supports the seeds in the area above the interior of the sowing tank 1. In other words, when the partition 101 is present, the sieve plate 3 will not fall out of the sowing tank 1 no matter how it is moved. The planar reciprocating movement of the sieve plate 3 can be achieved by a drive mechanism that propels the sieve plate 3 to slide back and forth. During manufacturing, this drive mechanism can be a commonly used vibrating motor, a piston rod that pushes the sieve plate 3 to move back and forth, or even an electric actuator, etc. In this agricultural sowing device, during the reciprocating sliding of the sieve plate 3, the seeds gradually fall into the lower chamber under the action of horizontal oscillation screening. This prevents seeds from being unable to pass through the sieve holes or the aforementioned seed-dropping holes due to mutual compression. Under the oscillation action of the sieve plate 3, the holes remain unobstructed. Furthermore, during the falling process, these seeds come into face-to-face contact with the soil stirred and scattered by the harrowing component 4, achieving partial mixing of seeds with soil in the air. After falling into the lower chamber, the seeds finally fall into the sowing furrow 25 dug by the plow head 2 through the sowing holes at the bottom of the lower chamber. This achieves sowing by directly sprinkling the pre-mixed soil and seed mixture into the sowing furrow 25, improving the uniformity of sowing and preventing excessive seed aggregation that could affect germination and subsequent growth.

[0030] In addition, such as Figure 1 and Figure 2 As shown, the sowing hole is connected to a vertically arranged mud discharge pipe 9. The mud discharge pipe 9 can be a telescopic pipe to change the height of the sowing material. Specifically, a mud spraying pipe 10 is fixed perpendicularly to the bottom of the mud discharge pipe 9. The bottom of the mud spraying pipe 10 has several mud spraying holes for the soil mixed with seeds to fall, or a mud spraying strip hole arranged along its length to allow the soil mixed with seeds to fall. The length direction of the mud spraying pipe 10 is consistent with the width direction of the sowing furrow 25 to achieve full and uniform sowing in all parts of the width direction within the sowing furrow 25.

[0031] As one of the specific implementation structures, such as Figure 1 A mud discharge pipe 9 is fixed to the upper central surface of the mud spraying pipe 10 to inject soil mixed with seeds. A pair of symmetrically arranged augers 11 are axially arranged inside the mud spraying pipe 10. The two augers 11 transport the soil from the center of the mud spraying pipe 10 to both ends, ensuring that the aforementioned mud spraying holes or mud spraying strip holes can fully spray seeds and soil. If necessary, a spiral stirring shaft can be coaxially fixed to the bottom end face of the aforementioned central pipe 6, so that when the central pipe 6 rotates, it can push the soil downwards, making it easier for the soil to be fully discharged into the seeding holes.

[0032] As another preferred design structure, such as Figure 1-2 The inner area of ​​the plow head 2 is divided into three independent mud discharge troughs 201 by four side plates (not shown in the figure). Above the harrowing assembly 4 in the middle mud discharge trough 201, there is an arc-shaped mud baffle 5 to prevent soil from splashing outwards, so that the soil in the middle enters the lower compartment of the seed tank 1. The other two mud discharge troughs 201 on the sides are curved and extended towards the edge of the seed furrow 25 on their respective sides to transport the soil to the sides of the seed furrow 25 for temporary storage. In addition, during manufacturing, a soil covering plate 18 is fixed behind each of the two mud discharge troughs 201 on the sides. The two soil covering plates 18 are arranged in a V-shape with their ends touching each other, so as to push the soil on both sides of the seed furrow 25 back onto the soil that has been sprinkled with seeds, and to fully backfill and cover it, ensuring that the soil mixed with seeds is fully covered by a layer of original soil.

[0033] To adjust the sowing depth, such as Figure 1As shown, in this embodiment, the top of the plowshare 2 needs to be hinged to the side wall of the seeding container 1, and a V-shaped spring plate 12 that is always compressed is installed between the two. The left side of the spring plate 12 can be fixed to the surface of the container wall. In practice, there is a telescopic rod 13 with one end fixed to the seeding container 1 on the inner side of the spring plate 12. The length of the telescopic rod 13 is adjustable. It can be two studs connected to each other with one end threaded into a threaded sleeve. The other end of the telescopic rod 13 is hinged to a slider 14. The slider 14 is slidably installed within the surface of the rear side of the plowshare 2. When it is necessary to adjust the tilt angle of the plowshare 2, the length of the telescopic rod 13 can be changed. The spring plate 12 can make the plowshare 2 remain relatively stable and not shake randomly even when it is not working.

[0034] Specifically, such as Figure 1 As shown, this drive mechanism includes a vertically installed central tube 6. When a partition 101 is provided, the central tube 6 axially passes through the partition 101 and the sieve plate 3, and is in clearance fit with the partition 101 and rotatably fit with the sieve plate 3. If a partition 101 is provided, the clearance between the central tube 6 and the partition 101 must be such that the central tube 6 is not interfered with by the sieve plate 3 when it moves along with the sieve plate 3 in a plane. That is, the partition 101 has a mounting hole in the center that is much larger than the outer diameter of the central tube 6. In addition, several stirring rods 7 need to be arranged around the lower section of the central tube 6 so that when the seeds and soil are mixed, they can be stirred more evenly and the seeds can be dispersed more fully when they fall into the lower chamber.

[0035] In order to apply fertilizer at the same time as sowing, such as Figure 1 As shown, the central pipe 6 is connected to the fertilizer and water delivery hose 15, which in turn is connected to the mixed fertilizer and water tank for transporting water and fertilizer. Several T-shaped spray pipes 8 are connected to the upper section of the central pipe 6, and these pipes are densely covered with spray holes to ensure even spraying of water and fertilizer. This allows water to directly contact and moisten the soil mixed with seeds, providing good nutrients or water for subsequent seed growth. If a heating device is installed to heat the water and fertilizer, it can also improve the soil temperature during sowing. Therefore, the central pipe 6 is also crucial.

[0036] In more detail, such as Figure 1 and Figure 3 As shown, a sliding plate 17 is located at the top of the central tube 6. The sliding plate 17 slides in contact with the top of the seeding tank 1. To reduce friction, it can be adjusted as follows: Figure 3 As shown, a ball bearing is installed, and the central hole end of the sliding plate 17 is rotatably connected to the connection end of the fertilizer delivery hose 15. The specific structure can be as follows: Figure 3As shown, a structure similar to a T-bolt is provided on the end face of the connection end, and a corresponding T-shaped annular groove is provided on the end face of the sliding plate 17, thereby achieving rotational installation, or those skilled in the art can directly refer to the design based on existing technology. In order to drive the central tube 6 to move in the horizontal plane, so that it can also rotate, as... Figure 1 and Figure 3 The connecting end of the fertilizer water delivery hose 15 is located in the center of a driven external gear ring fixed on the sliding plate 17. This driven gear 16 is rotatably mounted on a... Figure 4 As shown, the sliding arm 19 can smoothly fit against the upper end face of an internal gear ring 24, or be horizontally slidably mounted on a certain cross-section within the internal gear ring 24; while the driven gear 16 mentioned above can be rotatedly mounted on the sliding arm 19 as follows: Figure 6 As shown, a rotatable connection is achieved through a coaxial connecting cylinder 26 and a commonly used key. Furthermore, this driven gear ring meshes with a driving gear 27, which is also rotatably mounted below the sliding arm 19. The gear shaft of the driving gear 27 is connected to the main shaft of a drive motor 21 fixedly mounted on the upper surface of the sliding arm 19. Specifically, a key could be provided within the end face of the gear shaft penetrating the sliding arm 19. Figure 4 The gear shaft mounting hole 20 is shown. The main shaft is inserted into the gear shaft mounting hole 20 and connected by a key. To allow the sliding arm 19 and the driven gear ring to swing or rotate in the horizontal plane, please refer to [reference needed]. Figure 4-5 The driving gear 27 meshes with a fixedly mounted internal gear ring 24 located on its outer side. The internal gear ring 24 can be adaptively fixedly mounted on the corresponding position or component according to the specific structure. This embodiment does not provide examples of its specific mounting structure or auxiliary structure; those skilled in the art can adapt and design and manufacture it accordingly. The drive motor 21 is located away from one end of the sliding arm 19, and is connected via a... Figure 5 The connecting arm 22 shown is rotatably mounted below a bridging arm 23, which is located above the sliding arm 19. Ideally, the two should be perpendicular to each other to avoid interfering with the reciprocating movement of the sliding arm 19. One end of the connecting arm 22 is rotatably mounted on the bridging arm 23 at the center of the inner gear ring 24. The drive motor 21 is thus mounted inside the inner gear ring 24, revolving around the center of the inner gear ring 24. This also ensures that the sliding arm 19 maintains continuous contact with the end face of the inner gear ring 24 and moves stably without separation. This allows the central tube 6 and the sieve plate 3 to vibrate together in the horizontal plane, similar to sieving. At the same time, the central tube 6 also rotates, making the fertilizer and water sprayed more evenly and allowing them to come into contact with and soak the soil mixed with the seeds.

[0037] It should be clarified here that the terms "comprising" and "including" in this specification mean that the invention contains one or more technical means or features, specifically meaning that there are other existing or non-existent technical features not listed here. The descriptions in the above embodiments are merely illustrative examples for the purposes of this invention and are by no means the only limiting features. Those skilled in the art should understand that, without departing from the technical content described in all the claims of this application, some simple substitutions and modifications can be made to change or be equivalent to other specific embodiments and application scenarios. However, no matter how adaptively changed, these embodiments will necessarily fall within the protection scope of this invention.

Claims

1. An agricultural seeding device, comprising a seeding component and a plowshare (2) located in front of the seeding component, characterized in that, The sowing component includes a vertically installed sowing tank (1), the front side wall of the sowing tank (1) is connected to the mud discharge end at the top of the plow (2), and a harrowing component (4) for crushing the soil is provided at the connection point. The internal space of the seeding tank (1) is divided into upper and lower compartments by a horizontally installed sieve plate (3). The sieve plate (3) has several sieve holes for seeds to fall through. The edge of the sieve plate (3) is slidably inserted into the tank wall of the seeding tank (1). The sieve plate (3) is driven by a drive mechanism to slide back and forth in a plane. During the back and forth sliding process, the seeds fall into the lower compartment and, during the falling process, come into face contact with the soil that is turned over and scattered by the harrowing component (4) and mix together. Finally, the seeds fall into the seeding furrow (25) dug by the plow (2) through the seeding hole at the bottom of the lower compartment. The drive mechanism includes a vertically installed central tube (6) that axially penetrates the sieve plate (3) and is rotatably engaged with the sieve plate (3); a number of stirring rods (7) are arranged around the lower section of the central tube (6); The central pipe (6) is connected to the fertilizer and water delivery hose (15). Several T-shaped spray pipes (8) connected to the upper section of the central pipe (6) are provided around it. Spray holes are densely distributed on the spray pipes (8). The top of the central tube (6) has a sliding plate (17), which slides in contact with the top of the seeding tank (1). The central hole of the sliding plate (17) is rotatably connected to the connecting end of the fertilizer and water delivery hose (15). The connecting end of the fertilizer and water delivery hose (15) is located at the center of a driven external gear ring fixed on the sliding plate (17). The driven gear (16) is rotatably mounted on a sliding arm (19) and is connected to a driving gear that is also rotatably mounted below the sliding arm (19). 27) Meshing, the gear shaft of the drive gear (27) is connected to the main shaft of the drive motor (21) which is fixedly mounted on the upper surface of the sliding arm (19). The drive gear (27) is meshed with an internal gear ring (24) fixedly mounted on its outer side. The end of the drive motor (21) away from the sliding arm (19) is rotatably mounted under a cross arm (23) via a connecting arm (22). One end of the connecting arm (22) is rotatably mounted on the cross arm at the center of the internal gear ring (24).

2. The agricultural seeding device according to claim 1, characterized in that, The driving mechanism is a vibration motor or a piston rod that can push the sieve plate (3) to move back and forth in a plane.

3. An agricultural seeding device according to claim 1, characterized in that, The sowing hole is connected to a vertically arranged mud discharge pipe (9). A mud spraying pipe (10) is fixed at the bottom of the mud discharge pipe (9) perpendicular to it. The bottom of the mud spraying pipe (10) has several mud spraying holes for the mud mixed with seeds to fall, or a mud spraying strip hole arranged along its length. The length direction of the mud spraying pipe (10) is consistent with the width direction of the sowing furrow (25).

4. An agricultural seeding device according to claim 3, characterized in that, The mud spraying pipe (10) has the mud discharge pipe (9) fixed on its central upper surface, and a pair of symmetrically arranged screw conveyors (11) are provided axially inside the mud spraying pipe (10). The two screw conveyors (11) transport the mud from the center of the mud spraying pipe (10) to both ends.

5. An agricultural seeding device according to claim 1, characterized in that, The inner area of ​​the plow (2) is divided into three independent mud discharge troughs (201) by four side plates. Above the harrowing assembly (4) in the middle mud discharge trough (201), there is an arc-shaped mud baffle (5) to prevent soil from splashing outward. The other two mud discharge troughs (201) on the other two sides bend and extend toward the edge of the sowing furrow (25) on their respective sides to transport soil to both sides of the sowing furrow (25).

6. An agricultural seeding device according to claim 5, characterized in that, A soil-covering plate (18) is fixed behind each of the two mud discharge troughs (201) on both sides. The two soil-covering plates (18) are arranged in a V-shape and their ends can touch each other.

7. An agricultural seeding device according to claim 1, characterized in that, The top of the plow (2) is hinged to the side wall of the seeding container (1), and a V-shaped spring plate (12) that is always compressed is installed between them. The inner side of the spring plate (12) has a telescopic rod (13) with one end fixed to the seeding container (1), and the other end of the telescopic rod (13) is hinged to a slider (14). The slider (14) is slidably installed on the rear surface of the plow (2).

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