Seeding machine for agricultural planting

Abstract

The invention discloses a seeder for agricultural planting, and belongs to the technical field of combined seed and fertilizer seeders, the seeder comprises a machine body, a fertilizer storage box erected at the upper end of the machine body and used for storing fertilizer and a plurality of seed storage boxes erected at the upper end of the machine body and used for storing seeds, and the seed storage boxes are linearly distributed; a plurality of discharging hoppers corresponding to the seed storage boxes are arranged at the lower end of the fertilizer storage box, conveying assemblies used for conveying fertilizer and seeds are arranged at the lower end of the machine body, a first soil breaking part and a second soil breaking part which are matched with the conveying assemblies are arranged at the lower end of the machine body, and a recycling assembly used for recycling the fertilizer and the seeds is arranged at the lower end of the machine body. The device has the beneficial effects that through the arrangement of the material returning pipe and the recycling pipe, the conveying blades rotate reversely to enable fertilizer and seeds to enter the recycling pipe through the material returning pipe, workers can conveniently recycle the remaining fertilizer and seeds, and resource waste and increase of the planting cost are effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizing and seeding machines, and in particular to a seeding machine used for agricultural planting. Background Art

[0002] A seeder is a planting machine that sows crop seeds and can complete a series of actions such as furrowing, seed placement, soil covering and pressing during the sowing process, thereby greatly improving people's planting efficiency for crops such as corn, peanuts, and beans, and effectively reducing the amount of labor and labor intensity of farmers during planting operations.

[0003] Most seed drills are equipped with seed storage boxes and fertilizer storage boxes, so that fertilization can be completed simultaneously during seed sowing. However, when using them, it is difficult for workers to accurately control the amount of seeds and fertilizers used. After the fertilization and sowing operations on a piece of land are completed, unused seeds and fertilizers will remain in the seed storage boxes and fertilizer storage boxes, making it difficult to recycle the remaining seeds and fertilizers. Summary of the invention

[0004] The purpose of the present invention is to provide a seeder for agricultural planting in order to solve the above-mentioned technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A seeder for agricultural planting, comprising a machine body, a fertilizer storage box mounted on the upper end of the machine body for storing fertilizers, and a seed storage box mounted on the upper end of the machine body for storing seeds, wherein the seed storage boxes are multiple and linearly distributed, the lower end of the fertilizer storage box is provided with multiple discharge hoppers corresponding to the seed storage boxes, the lower end of the machine body is provided with conveying components for conveying fertilizers and seeds, the upper end of the machine body is provided with a driving component, the lower end of the machine body is provided with a first soil-breaking piece and a second soil-breaking piece matched with the conveying component, and the lower end of the machine body is provided with a recovery component for recovering fertilizers and seeds; The conveying assembly includes a rotating shaft and a circular shell sleeved on the outside of the rotating shaft. There are multiple circular shells and feed pipes are respectively passed through the upper surfaces of the multiple circular shells. Discharge pipes are respectively passed through the lower surfaces of the multiple circular shells. Mounting parts are respectively sleeved on the outside of the rotating shaft. The multiple mounting parts are respectively located inside the circular shells and multiple conveying blades for conveying materials are evenly distributed on the outer surface.

[0006] As a further description of the above technical solution: The driving assembly includes a mounting shaft rotatably mounted on the upper end of the body and a first sprocket sleeved on the outside of the mounting shaft, a second sprocket sleeved on the outside of the rotating shaft, the first sprocket and the second sprocket are connected by a chain transmission and a sprocket cover is sleeved on the outside, a motor for driving the rotating shaft to rotate is provided on the outside of one of the circular shells, a traveling wheel is provided on one side of the body, and a transmission shaft for driving the traveling wheel to rotate is installed on the outside of the mounting shaft through a coupling.

[0007] As a further description of the above technical solution: The recovery assembly includes a U-shaped frame and two recovery pipes. The two recovery pipes are located on the inner side of the U-shaped frame and are fixedly connected to the U-shaped frame. The U-shaped frame is fixedly connected to the machine body by mounting bolts. Return pipes matching the round shell are respectively penetrated through the surfaces of the two recovery pipes. One end of the two recovery pipes is open and is matched with an end cover.

[0008] As a further description of the above technical solution: The mounting member includes a first mounting sleeve and a second mounting sleeve, the first mounting sleeve and the second mounting sleeve are rotatably connected to the rotating shaft respectively, the first mounting sleeve is two in number, the second mounting sleeve is located between the two first mounting sleeves and is connected to the first mounting sleeve through a connecting torsion spring, the conveying blades are an even number and are fixedly connected to the outer surfaces of the two first mounting sleeves respectively, the surface of the second mounting sleeve is provided with a plurality of blocking pieces, the number of the blocking pieces is half the number of the conveying blades, and each interval of the conveying blades is provided with a notch that matches the blocking piece, the rotating shaft is hollow and an operating shaft is provided inside, the second mounting sleeve is fixedly connected to the surface of the operating shaft through a connecting block, the surface of the rotating shaft is provided with an arc-shaped slide groove for the sliding of the connecting block, and one side of the connecting block is provided with a constraining torsion spring. The spring connection is provided with a connecting sleeve, one end of the constraint torsion spring is slidably connected to the connecting block, and the other end of the constraint torsion spring is fixedly connected to the connecting sleeve, the connecting sleeve is in sliding contact with the inner wall of the rotating shaft, a protrusion is fixedly provided on the outer surface of the connecting sleeve, and a spiral groove matching the protrusion is provided on the inner wall of the rotating shaft. A mounting groove is provided on one side of the first mounting sleeve, and a fixing rod is provided on the inner wall of the mounting groove. A sliding sleeve at one end of the fixing rod is provided with a limiting sleeve, and a connecting rod is fixedly provided on the surface of the limiting sleeve, one end of the connecting rod passes through the rotating shaft and is provided with a rod body slidably connected to the connecting sleeve, a travel groove matching the connecting rod is provided on the surface of the rotating shaft, and a clamping hole matching the limiting sleeve is provided on the inner wall of the round shell, and the operating shaft movably passes through the rotating shaft away from one end of the motor and is provided with an operating handle.

[0009] As a further description of the above technical solution: The rod body comprises a cross bar and two baffles fixedly arranged on the outside of the cross bar. The cross bar is fixedly connected to the connecting rod, and the inner sides of the two baffles are in contact with the outer surface of the connecting sleeve respectively.

[0010] As a further description of the above technical solution: A limiting bolt is penetrated through the surface of the operating handle, an arc groove matched with the limiting bolt is opened at the end of the rotating shaft, and a limiting hole matched with the limiting bolt is opened at one end of the inner wall of the arc groove.

[0011] As a further description of the above technical solution: The inner bottom surfaces of the two recovery pipes are sloped.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In the present invention, by arranging a round shell, a rotating shaft, a motor, a conveying blade and a mounting part, fertilizers or seeds enter the round shell through a feeding pipe and are temporarily stored between two adjacent conveying blades. As the conveying blades rotate forward, the fertilizers or seeds are discharged from the discharging pipe, thereby achieving the effects of fertilization and sowing. In the present invention, by providing a return pipe and a recovery pipe, the conveying blades are reversed so that the fertilizer and seeds enter the recovery pipe through the return pipe, which is convenient for the staff to recycle the remaining fertilizer and seeds, effectively avoiding the waste of resources and increasing the planting cost; In the present invention, by arranging a first mounting sleeve, a second mounting sleeve, a sealing piece, a connecting block, a connecting sleeve, a protrusion, a spiral groove and an operating shaft, the position of the conveying blade is first adjusted and fixed, and then the sealing piece is rotated to open the gap of the conveying blade, so that the fertilizer and seeds can flow continuously and be discharged smoothly from the recovery pipe, thereby effectively improving the work efficiency of the entire recovery operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The appearance of a fertilizer seeding machine provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the structure of a conveying assembly according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the internal structure of a round shell according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the structure of the mounting member and the conveying blades provided in an embodiment of the present invention is shown; Figure 5 It shows a schematic diagram of the structure of the conveying blade and the blocking piece provided in an embodiment of the present invention; Figure 6 A cross-sectional view of a local structure of a rotating shaft provided according to an embodiment of the present invention is shown; Figure 7 It shows an exploded schematic diagram of the local structure of the rotating shaft and the mounting member provided in an embodiment of the present invention; Figure 8A schematic diagram of the connection structure between the rod body and the connecting sleeve provided in an embodiment of the present invention is shown; Fig. 9 A schematic diagram of a local structure of a rotating shaft provided in an embodiment of the present invention is shown; Fig.10 A schematic structural diagram of a recycling component provided according to an embodiment of the present invention is shown.

[0014] Legend: 1. Machine body; 2. Fertilizer storage box; 3. Seed storage box; 4. Round shell; 5. Recovery pipe; 6. First earth-breaking part; 7. Second earth-breaking part; 8. Rotating shaft; 9. Motor; 10. Feed pipe; 11. Discharge pipe; 12. Return pipe; 13. Operating shaft; 14. Operating handle; 15. First mounting sleeve; 16. Second mounting sleeve; 17. Transport blade; 18. Sealing piece; 19. Connecting block; 20. Connecting sleeve ; 21. Constraint torsion spring; 22. Limit bolt; 23. Limit sleeve; 24. Fixing rod; 25. Bump; 26. Connecting rod; 27. Cross bar; 28. Baffle; 29. ​​Spiral groove; 30. Arc groove; 31. U-shaped frame; 32. Mounting bolt; 33. End cover; 34. Arc groove; 35. Limit hole; 36. Travel groove; 37. Mounting shaft; 38. Sprocket cover; 39. Travel wheel; 40. Transmission shaft. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] like Figure 1-Figure 10 As shown, a seeder for agricultural planting includes a machine body 1, a fertilizer storage box 2 mounted on the upper end of the machine body 1 for storing fertilizers, and a seed storage box 3 mounted on the upper end of the machine body 1 for storing seeds. The seed storage boxes 3 are multiple and linearly distributed. The lower end of the fertilizer storage box 2 is provided with multiple discharge hoppers corresponding to the seed storage boxes 3. The lower end of the machine body 1 is respectively provided with conveying components for conveying fertilizers and seeds. The upper end of the machine body 1 is provided with a driving component. The lower end of the machine body 1 is respectively provided with a first earth-breaking piece 6 and a second earth-breaking piece 7 matched with the conveying component. The lower end of the machine body 1 is provided with a recovery component for recovering fertilizers and seeds. The conveying assembly includes a rotating shaft 8 and a round shell 4 sleeved on the outer side of the rotating shaft 8. The round shells 4 are multiple in number and are respectively penetrated with a feed pipe 10 on the upper surface, and the lower surfaces of the multiple round shells 4 are respectively penetrated with a discharge pipe 11. The outer side of the rotating shaft 8 is respectively sleeved with mounting parts, and the multiple mounting parts are respectively located inside the round shells 4 and the outer surface is uniformly provided with a plurality of conveying blades 17 for conveying materials. When in use, the rotating shaft 8 rotates through the mounting parts to drive the conveying blades 17 to rotate (refer to the attached manual Figure 3 And the instruction manual Figure 4 ), the fertilizer or seeds in the fertilizer storage box 2 or the seed storage box 3 enter the round shell 4 through the feed pipe 10, and are temporarily stored between two adjacent conveying blades 17, and then the fertilizer or seeds are driven to move to the discharge pipe 11 as the conveying blades 17 rotate (see the parameter manual). Figure 2 , the rotating shaft 8 drives the conveying blades 17 to rotate counterclockwise), and further with the rotation of the conveying blades 17, the fertilizer or seeds are discharged from the discharge pipe 11, thereby achieving the effect of fertilizing and sowing.

[0017] Furthermore, the driving assembly includes a mounting shaft 37 rotatably mounted on the upper end of the body 1 and a first sprocket sleeved on the outside of the mounting shaft 37, a second sprocket sleeved on the outside of the rotating shaft 8, the first sprocket and the second sprocket are connected by chain transmission and a sprocket cover 38 is sleeved on the outside, a motor 9 for driving the rotating shaft 8 to rotate is provided on the outside of one of the circular shells 4, a traveling wheel 39 is provided on one side of the body 1, and a transmission shaft 40 for driving the traveling wheel 39 to rotate is installed on the outside of the mounting shaft 37 through a coupling. When in use, the motor 9 drives the rotating shaft 8 to rotate, and under the transmission cooperation of the first sprocket, the second sprocket and the chain, the rotating shaft 8 and the mounting shaft 37 rotate synchronously, and under the transmission cooperation of the coupling and the transmission shaft 40, the rotation of the mounting shaft 37 drives the traveling wheel 39 to rotate.

[0018] Further, the recovery component includes a U-shaped frame 31 and two recovery pipes 5, the two recovery pipes 5 are located inside the U-shaped frame 31 and are fixedly connected to the U-shaped frame 31, the U-shaped frame 31 is fixedly connected to the body 1 by mounting bolts 32, and the surfaces of the two recovery pipes 5 are respectively penetrated with return pipes 12 that match the round shell 4, and one end of the two recovery pipes 5 is open and is matched with an end cover 33. When it is necessary to separately recover the remaining fertilizers and seeds in the fertilizer storage box 2 and the seed storage box 3, the controller controls the motor 9 to reverse, the motor 9 reverses to drive the rotating shaft 8 to reverse, and the rotating shaft 8 reverses to drive the conveying blade 17 to reverse (refer to the attached manual Figure 2 , that is, driving the conveying blade 17 to rotate clockwise), further with the rotation of the conveying blade 17, the fertilizer or seeds enter the recovery pipe 5 through the return pipe 12, and then are discharged from one end of the recovery pipe 5, so that the staff can more conveniently recycle the remaining fertilizer and seeds.

[0019] Further, the mounting member includes a first mounting sleeve 15 and a second mounting sleeve 16, the first mounting sleeve 15 and the second mounting sleeve 16 are rotatably connected to the rotating shaft 8 respectively, the number of the first mounting sleeves 15 is two, the second mounting sleeve 16 is located between the two first mounting sleeves 15 and is connected to the first mounting sleeve 15 through a connecting torsion spring, the number of the conveying blades 17 is an even number and are fixedly connected to the outer surfaces of the two first mounting sleeves 15 respectively, a plurality of blocking pieces 18 are provided on the surface of the second mounting sleeve 16, the number of the blocking pieces 18 is half the number of the conveying blades 17, and a notch matching the blocking piece 18 is provided at each interval of the conveying blades 17, the rotating shaft 8 is hollow and an operating shaft 13 is provided inside, and the second mounting sleeve 16 is fixedly connected to the surface of the operating shaft 13 through a connecting block 19 The surface of the rotating shaft 8 is provided with an arc-shaped slide groove 30 for sliding the connecting block 19. A connecting sleeve 20 is connected to one side of the connecting block 19 through a constraining torsion spring 21. One end of the constraining torsion spring 21 is slidably connected to the connecting block 19, and the other end of the constraining torsion spring 21 is fixedly connected to the connecting sleeve 20. The connecting sleeve 20 is in sliding contact with the inner wall of the rotating shaft 8. A protrusion 25 is fixedly provided on the outer surface of the connecting sleeve 20. A spiral groove 29 matching the protrusion 25 is provided on the inner wall of the rotating shaft 8. A mounting groove is provided on one side of the first mounting sleeve 15. A fixing rod 24 is provided on the inner wall of the mounting groove. A sliding sleeve at one end of the fixing rod 24 is provided with a limiting sliding sleeve 23. A connecting rod 26 is fixedly provided on the surface of the limiting sliding sleeve 23. One end of the connecting rod 26 penetrates into the rotating shaft 8 and is provided with a rod slidably connected to the connecting sleeve 20. The surface of the rotating shaft 8 is provided with a travel groove 36 which cooperates with the connecting rod 26, and the inner wall of the round shell 4 is provided with a clamping hole which cooperates with the limiting sliding sleeve 23. The operating shaft 13 is movable through the rotating shaft 8 at one end away from the motor 9 and is provided with an operating handle 14. As the conveying blades 17 rotate, the fertilizer and seeds are discharged from the return pipe 12 for recycling. The entire recycling process is limited by the rotation speed of the motor 9, and the discharge amount each time is limited and the material is discharged intermittently. Therefore, in order to improve the recycling efficiency of fertilizers and seeds, the fertilizers and seeds are discharged continuously. When in use, the staff is driven to rotate the operating handle 14, and the rotation of the operating handle 14 drives the operating shaft 13 to rotate. In this process, since the motor 9 cannot rotate after power is cut off, the rotation of the operating shaft 13 will not drive the rotating shaft 8 to rotate. The operating shaft 13 rotates through the connecting block 19 to drive the second mounting sleeve 16 to rotate (because the limiting sliding sleeve 23 is not aligned with the clamping hole, the rotation of the connecting block 19 will not drive the connecting sleeve 20 to slide under the action of the constraining torsion spring 21, and under the limiting action of the protrusion 25 and the spiral groove 29, the connecting sleeve 20 will not rotate, and only the constraining torsion spring 21 will be twisted under force), and the second mounting sleeve 16 rotates through the connecting torsion spring to drive the first mounting sleeve 15 to rotate, and the rotation of the first mounting sleeve 15 drives the fixing rod 24 and the limiting sliding sleeve 23 to revolve synchronously. When the limiting sliding sleeve 23 is aligned with the clamping hole, the connecting sleeve 20 rotates under the action of the resetting of the constraining torsion spring 21, and slides under the cooperation of the protrusion 25 and the spiral groove 29.Then, the limiting sleeve 23 is driven to move through the rod body and the connecting rod 26, so that one end of the limiting sleeve 23 is clamped into the clamping hole to limit the rotation of the first mounting sleeve 15. At this time, the first mounting sleeve 15 cannot rotate, that is, the position of the conveying blade 17 is adjusted (refer to the attached manual, Figure 2 And the instruction manual Figure 3 When the limiting sliding sleeve 23 is engaged with the engaging hole, the position of the conveying blade 17 is as shown in the figure, and the equipment is ready for the subsequent fertilizer and seed recovery). Then continue to rotate the operating shaft 13 to drive the second mounting sleeve 16 to rotate. At this time, the connecting torsion spring is twisted by force, and the second mounting sleeve 16 drives the blocking piece 18 to move, thereby opening the gap on the conveying blade 17. Therefore, the fertilizer and seeds enter the round shell 4 from the feed pipe 10, and under the action of the conveying blade 17 and the blocking piece 18, the fertilizer and seeds quickly enter the recovery pipe 5 from the return pipe 12. The whole process is continuous, which further improves the recovery efficiency.

[0020] Furthermore, the rod body includes a cross bar 27 and two baffles 28 fixedly arranged on the outside of the cross bar 27. The cross bar 27 is fixedly connected to the connecting rod 26. The inner sides of the two baffles 28 are respectively in contact with the outer surfaces of the connecting sleeve 20, so that when the first mounting sleeve 15 rotates, the two baffles 28 are attached to the outer surface of the connecting sleeve 20 and rotate without affecting the outer surface of the connecting sleeve 20. When the connecting sleeve 20 moves, the connecting rod 26 is driven to move through the two baffles 28, thereby driving the limiting sliding sleeve 23 to move.

[0021] Furthermore, a limiting bolt 22 is provided through the surface of the operating handle 14, and an arc groove 34 is provided at the end of the rotating shaft 8 to match the limiting bolt 22, and a limiting hole 35 is provided at one end of the inner wall of the arc groove 34 to match the limiting bolt 22. When fertilizing and sowing, the staff can rotate the limiting bolt 22 to ensure that one end of the limiting bolt 22 is inserted into the limiting hole 35, so that the operating shaft 13 is driven to rotate synchronously during the rotation of the rotating shaft 8. When recycling fertilizers and seeds, the staff first loosens the limiting bolt 22 and then rotates the operating handle 14, that is, rotates the operating handle 14 to open the notch on the conveying blade 17, and then tightens the limiting bolt 22 so that one end of the limiting bolt 22 abuts against the inner wall of the arc groove 34, effectively limiting the reversal of the operating handle 14, that is, ensuring the stability of the operating handle 14 after rotation, so that during the recycling process of fertilizers and seeds, the staff can release both hands and do not need to hold the operating handle 14 for a long time.

[0022] Furthermore, the inner bottom surfaces of the two recovery pipes 5 are sloped, so that the fertilizer and seeds are quickly discharged from one end of the recovery pipe 5 along the slope.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A seed drill for agricultural planting, comprising a machine body (1), a fertilizer storage box (2) mounted on the upper end of the machine body (1) for storing fertilizer, and a seed storage box (3) mounted on the upper end of the machine body (1) for storing seeds, wherein the seed storage boxes (3) are multiple and linearly distributed, and the lower end of the fertilizer storage box (2) is provided with multiple discharge hoppers corresponding to the seed storage boxes (3), characterized in that: The lower end of the machine body (1) is provided with a conveying assembly for conveying fertilizers and seeds, the upper end of the machine body (1) is provided with a driving assembly, the lower end of the machine body (1) is provided with a first soil-breaking member (6) and a second soil-breaking member (7) that cooperate with the conveying assembly, and the lower end of the machine body (1) is provided with a recovery assembly for recovering fertilizers and seeds; The conveying assembly comprises a rotating shaft (8) and a round shell (4) sleeved on the outside of the rotating shaft (8), the round shells (4) are multiple in number and each has a feed pipe (10) passing through its upper surface, and each has a discharge pipe (11) passing through its lower surface, and mounting parts are sleeved on the outside of the rotating shaft (8), and each mounting part is located inside the round shell (4) and each has a plurality of conveying blades (17) for conveying materials evenly distributed on its outer surface.

2. A seeder for agricultural planting according to claim 1, characterized in that: The driving assembly comprises a mounting shaft (37) rotatably mounted on the upper end of the machine body (1) and a first sprocket sleeved on the outside of the mounting shaft (37); a second sprocket sleeved on the outside of the rotating shaft (8); the first sprocket and the second sprocket are connected via a chain transmission and a sprocket cover (38) is sleeved on the outside; a motor (9) for driving the rotating shaft (8) to rotate is provided on the outside of one of the circular shells (4); a traveling wheel (39) is provided on one side of the machine body (1); a transmission shaft (40) for driving the traveling wheel (39) to rotate is installed on the outside of the mounting shaft (37) via a coupling.

3. A seeder for agricultural planting according to claim 2, characterized in that: The recovery assembly comprises a U-shaped frame (31) and two recovery pipes (5), the two recovery pipes (5) being located inside the U-shaped frame (31) and fixedly connected to the U-shaped frame (31), the U-shaped frame (31) being fixedly connected to the machine body (1) via mounting bolts (32), and return pipes (12) matching the round shell (4) being respectively penetrated through the surfaces of the two recovery pipes (5), and one end of the two recovery pipes (5) being open and matched with end covers (33).

4. A seeder for agricultural planting according to claim 2, characterized in that: The mounting member comprises a first mounting sleeve (15) and a second mounting sleeve (16), the first mounting sleeve (15) and the second mounting sleeve (16) being rotatably connected to the rotating shaft (8) respectively, the first mounting sleeve (15) being two in number, the second mounting sleeve (16) being located between the two first mounting sleeves (15) and being connected to the first mounting sleeves (15) via a connecting torsion spring, the conveying blades (17) being an even number and being fixedly connected to the outer surfaces of the two first mounting sleeves (15) respectively, and the surface of the second mounting sleeve (16) being provided with a plurality of sealing members. The number of the blocking pieces (18) is half the number of the conveying blades (17); each of the conveying blades (17) is provided with a notch that matches the blocking piece (18); the rotating shaft (8) is hollow and has an operating shaft (13) inside; the second mounting sleeve (16) is fixedly connected to the surface of the operating shaft (13) via a connecting block (19); the surface of the rotating shaft (8) is provided with an arc-shaped sliding groove (30) for the connecting block (19) to slide; one side of the connecting block (19) is connected to the operating shaft (13) via a constraining torsion spring (21). A connecting sleeve (20) is provided, one end of the constraining torsion spring (21) is slidably connected to the connecting block (19), the other end of the constraining torsion spring (21) is fixedly connected to the connecting sleeve (20), the connecting sleeve (20) is in sliding contact with the inner wall of the rotating shaft (8), a protrusion (25) is fixedly provided on the outer surface of the connecting sleeve (20), the inner wall of the rotating shaft (8) is provided with a spiral groove (29) matching with the protrusion (25), one side of the first mounting sleeve (15) is provided with a mounting groove, the inner wall of the mounting groove is provided with a fixing rod (24), the fixing rod (24) ) is provided with a limit sleeve (23) at one end of the sliding sleeve, a connecting rod (26) is fixedly provided on the surface of the limit sleeve (23), one end of the connecting rod (26) passes through the rotating shaft (8) and is provided with a rod body slidably connected to the connecting sleeve (20), the surface of the rotating shaft (8) is provided with a travel groove (36) matching with the connecting rod (26), the inner wall of the round shell (4) is provided with a clamping hole matching with the limit sleeve (23), and the operating shaft (13) is movably passed through the rotating shaft (8) at one end away from the motor (9) and is provided with an operating handle (14).

5. A seeder for agricultural planting according to claim 4, characterized in that: The rod body comprises a cross bar (27) and two baffles (28) fixedly arranged on the outside of the cross bar (27); the cross bar (27) is fixedly connected to the connecting rod (26); the inner sides of the two baffles (28) are in contact with the outer surface of the connecting sleeve (20) respectively.

6. A seeder for agricultural planting according to claim 4, characterized in that: A limiting bolt (22) is provided through the surface of the operating handle (14), an arc groove (34) matching with the limiting bolt (22) is provided at the end of the rotating shaft (8), and a limiting hole (35) matching with the limiting bolt (22) is provided at one end of the inner wall of the arc groove (34).

7. A seeder for agricultural planting according to claim 3, characterized in that: The inner bottom surfaces of the two recovery pipes (5) are sloped.

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