An equidistant sowing device and sowing method thereof

Abstract

The present invention relates to the field of sowing technology, and in particular to an equidistant sowing device and a sowing method thereof, comprising a roller, a sowing machine body and a connecting frame, wherein a plurality of sowing units are arranged on one side of the lower part of the sowing machine body, a rotating column is rotatably arranged on the inner side of the feeding tube, the rotating column is located between two first partitions, and a plurality of receiving grooves are distributed in a ring array outside the rotating column, and the seeds fall into the receiving grooves located in the upper position, and after the receiving grooves rotate to the lower position, the seeds leak out of the feeding tube. The present invention performs synchronous screening on the seeds when feeding, and small-particle seeds smoothly enter the receiving grooves outside the rotating column, the receiving grooves are arranged in a ring shape, and the size of the receiving grooves can only allow a certain number of seeds to enter smoothly, and then as the position of the receiving grooves rotates, the seeds inside the same receiving grooves are smoothly sown, so that the number of seeds in each seed hole is not much different.

Description

Technical Field

[0001] The invention relates to the technical field of sowing, and in particular to an equidistant sowing device and a sowing method thereof. Background Art

[0002] Sowing refers to the cultivation technology of sowing crop seeds into the soil in a certain way and specification. The purpose of sowing is to make the seeds germinate and grow in a suitable environment, and eventually form mature crops. The sowing method directly affects the growth and yield of crops, so sowing technology is a very important link in agricultural production.

[0003] There is a patent application number CN105684610B, which is called a seeder. It involves the field of agricultural machinery and its main purpose is to solve the technical problems of the complicated and time-consuming process of traditional rice planting in the prior art. The main technical scheme adopted is: the seeder includes a frame, a furrowing mechanism, a fertilizing mechanism, a shaping wheel, a duckbill seeder, a soil covering mechanism and a pressing wheel; a suspension frame is provided at the upper front end of the frame, the furrowing mechanism includes a first connecting rod and a furrowing member, and the furrowing mechanism opens a furrow on the land to be sown through the furrowing member; the fertilizing mechanism includes a fertilizer box and a fertilizer pipe, and the fertilizing mechanism applies fertilizer into the furrow through the fertilizer outlet at the lower end of the fertilizer pipe; the shaping wheel is used to compact and shape the furrow opened by the furrowing member; the duckbill seeder is used to open a hole at the bottom of the shaped furrow when the seeder is moving and sow seeds into the hole; the soil covering mechanism pushes at least a part of the soil dug out by the furrowing member into the hole in the furrow through the soil covering member; the pressing wheel is used to compact the surface of the hole after soil covering.

[0004] Although the above documents can sow seeds well, the number of seeds in a single hole varies greatly, resulting in different growth trends of seedlings. Secondly, when sowing, large seeds need to be buried deeper because they are too large. Burying them deeper can promote the growth of their rhizomes, but this will also lead to a lower germination rate. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose an equidistant sowing device and a sowing method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Design an equidistant seeding device, including a roller, a seeding machine body and a connecting frame:

[0008] A plurality of seeding units are arranged on one side of the lower part of the seeding machine body;

[0009] The sowing unit includes a furrowing unit and a feeding unit;

[0010] The feeding unit includes a driving assembly and a feeding pipe connected by a fixed seat, the feeding pipe is connected to a seed box in a main body of the seeder through a seed delivery pipe, two mutually symmetrical first partitions are arranged obliquely on the inner side of the feeding pipe, a rotating column is rotatably arranged on the inner side of the feeding pipe, the rotating column is located between the two first partitions, a plurality of receiving grooves are distributed in a circular array on the outside of the rotating column, and the seeds fall into the receiving grooves located at the upper position, and after the receiving grooves rotate to the lower position, the seeds leak out of the feeding pipe;

[0011] The unloading unit also includes a screening component;

[0012] The screening assembly comprises a guide rail, a column, an arc plate, an eccentric wheel, a second partition plate and a screening frame;

[0013] The two second partitions are symmetrically installed on the inner side of the feeding tube in an inclined manner, the second partition is located above the rotating column, and the screening frame is slidably arranged above the two second partitions in the vertical direction. When the screening frame reaches the highest point, a channel for small-particle seeds to pass through is formed between the screening frame and the second partition on the same side;

[0014] The guide rail is vertically opened on the outer wall of the feeding tube, and columns are connected to both sides of the screening frame, and the other ends of the two columns pass through the guide rail and extend to the outside of the feeding tube, and an arc plate is installed at the end of one of the columns, and the eccentric wheel is installed on the output shaft of the motor, and the arc plate is pushed up when the eccentric wheel rotates;

[0015] The column is arranged in a prism shape, and the outer wall of the column and the inner wall of the guide rail are in contact with each other.

[0016] Preferably, the driving assembly includes a motor mounting frame installed on one side of the fixing seat, a motor is installed on the motor mounting frame, and an output shaft of the motor is connected to the rotating column.

[0017] Preferably, a crankshaft is mounted on the output shaft of the motor, and a sleeve is sleeved on the crankshaft;

[0018] An inner ring frame is slidably provided on the inner side of the feeding tube, and the inner ring frame is located below the rotating column. An outer ring frame is slidably provided on the outer side of the feeding tube. A plurality of slide grooves are provided at the lower end of the outer wall of the feeding tube. The inner ring frame and the outer ring frame are connected by a round rod, and the round rod passes through the slide groove.

[0019] A plurality of scrapers are vertically mounted at the lower end of the outer annular frame, and the scrapers are in contact with the inner wall of the feed tube, and scraper teeth are arranged at the lower ends of the scrapers;

[0020] An L-shaped rod is movably connected between the sleeve and the outer annular frame via a hinge.

[0021] Preferably, the furrowing unit comprises a conical plow connected to the bottom of the seeder body through a connecting rod, and soil covering components and soil discharge components are symmetrically arranged on both side walls of the conical plow, and the soil covering components and soil discharge components are connected through a fixing plate.

[0022] Preferably, the soil discharge assembly includes a second rotating shaft, a second roller and a second frame, the second frame is symmetrically installed on the extension line of the conical plow side wall, the second rotating shaft is rotatably arranged on the inner side of the second frame, and the second roller is rotatably arranged on the outer side of the second rotating shaft.

[0023] Preferably, the soil covering assembly includes a first frame, a first rotating shaft and a first roller, the first frame is fixed to the second frame via a fixing plate, the first rotating shaft is rotatably disposed in the first frame, and the first roller is sleeved on the outside of the first rotating shaft.

[0024] Preferably, the bottom of the second frame is at the same level as the bottom of the first frame, the feed pipe is located between the two first frames, and the angle between the two first frames and the second frame on the same side is greater than ninety degrees.

[0025] The present invention also provides a sowing method for equidistant sowing, which specifically comprises the following steps:

[0026] S1. The connecting frame is fixed on the agricultural vehicle, and the position height of the roller is adjusted by the hydraulic rod. The conical plow is connected to the connecting rod in an articulated manner. The bottom of the conical plow enters the soil to dig a ditch. The soil turned up by the ditch moves along the soil discharge assembly. After planting, the soil passes through the soil covering assembly to cover the seeds.

[0027] S2. The seed box in the main body of the seeder delivers a certain amount of seeds to the feed pipe through the seed delivery pipe. The seeds first pass through the screening element above to smoothly drop the small-grain seeds. The dropped seeds enter the receiving groove outside the rotating column. As the position of the receiving groove changes, the seeds fall;

[0028] S3. While sowing, use the scraper to move up and down to discharge the soil adhering to the lower end of the feed pipe.

[0029] The invention provides an equidistant sowing device and a sowing method thereof, which have the beneficial effect that the equidistant sowing device and the sowing method thereof can synchronously screen the seeds when feeding them, so that small-particle seeds can smoothly enter the containing groove outside the rotating column, thereby avoiding the problem of decreased germination rate after large-particle seeds are buried, the containing groove is arranged in a ring shape, and the size of the containing groove can only allow a certain number of seeds to smoothly enter, and then as the position of the containing groove rotates, the seeds in the same containing groove are smoothly sown, so that the number of seeds in each seed hole is not much different. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a schematic diagram of the overall structure of an equidistant seeding device.

[0031] Figure 2 The present invention provides a schematic structural diagram of a sowing unit of an equidistant sowing device.

[0032] Figure 3 The present invention provides a schematic structural diagram of a furrowing unit of an equidistant seeding device.

[0033] Figure 4 The present invention is a schematic structural diagram of a feeding unit of an equidistant seeding device.

[0034] Figure 5 The present invention provides a structural cross-sectional view of a feed pipe of an equidistant seeding device.

[0035] Figure 6 The right side isometric view of a feed pipe of an equidistant seeding device proposed by the present invention.

[0036] Figure 7 This is a structural front view of a feeding unit of an equidistant seeding device proposed by the present invention.

[0037] Figure 8 for Figure 1 An enlarged structural view of part A of the proposed equidistant seeding device.

[0038] Fig. 9 This is an enlarged structural diagram of a rotating column of an equidistant seeding device proposed by the present invention.

[0039] Fig.10 This is a schematic diagram of the soil movement direction when the equidistant seeding device proposed by the present invention is opened.

[0040] In the figure: 1. roller; 2. seeder body; 3. connecting frame; 4. conical plow; 5. connecting rod; 6. fixed seat; 7. soil covering assembly; 71. first frame; 72. first rotating shaft; 73. first roller; 8. soil discharge assembly; 81. second rotating shaft; 82. second roller; 83. second frame; 9. fixing plate; 10. feeding pipe; 11. motor mounting frame; 12. motor; 13. outer ring frame; 14. seed conveying pipe; 15. guide rail; 16. column; 17. arc plate; 18. slide groove; 19. sleeve; 20. crankshaft; 21. L-shaped rod; 22. eccentric wheel; 23. round rod; 24. inner ring frame; 25. scraper; 26. scraper teeth; 27. first partition; 28. second partition; 29. ​​receiving groove; 30. screening frame; 31. rotating column. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Example 1, reference Figure 1-7 An equidistant seeding device includes a roller 1, a seeding machine body 2 and a connecting frame 3. A plurality of seeding units are arranged on one side of the lower part of the seeding machine body 2. The seeding units include a furrowing unit and a feeding unit.

[0043] The feeding unit includes a driving assembly and a feeding pipe 10 connected through a fixed seat 6, the driving assembly includes a motor mounting frame 11 installed on one side of the fixed seat 6, a motor 12 is installed on the motor mounting frame 11, and the output shaft of the motor 12 is connected to the rotating column 31, the feeding pipe 10 is connected to the seed box in the main body 2 of the planter through the seed delivery pipe 14, and the inner side of the feeding pipe 10 is inclined and provided with two mutually symmetrical first partitions 27, referring to Fig. 9 A rotating column 31 is rotatably provided on the inner side of the feed tube 10, and the rotating column 31 is located between the two first partitions 27. A plurality of receiving grooves 29 are distributed in a circular array outside the rotating column 31, and the seeds fall into the receiving grooves 29 located in the upper position. After the receiving grooves 29 rotate to the lower position, the seeds leak out of the feed tube 10.

[0044] When the seeds reach the upper end of the first partition 27, since the two symmetrically arranged first partitions 27 are both inclined downward, the rolled seeds smoothly enter the receiving groove 29 on the outer surface of the rotating column 31. The receiving groove 29 is arranged in an arc shape, and a plurality of receiving grooves 29 are arranged in a ring array on the outer surface of the rotating column 31. Since the internal size of the receiving groove 29 is limited and the design depth of the receiving groove 29 matches the diameter of the small-particle seeds, the number of seeds entering the receiving groove 29 is relatively stable. Then, as the rotating column 31 rotates, the receiving groove 29 that originally opened upward moves to the lower end of the rotating column 31. At this time, the receiving groove 29 containing the seeds opens downward, allowing the seeds to fall smoothly, thereby reducing the difference in the number of seeds sown in a single hole.

[0045] The present invention also provides a sowing method for equidistant sowing, which specifically comprises the following steps:

[0046] S1. The connecting frame 3 is fixed on the agricultural vehicle, and the position height of the roller 1 is adjusted by the hydraulic rod. The conical plow 4 is connected to the connecting rod 5 in an articulated manner. The bottom of the conical plow 4 enters the soil to dig a ditch. The soil turned up by the ditch moves along the soil discharge assembly 8. After planting, the soil passes through the soil covering assembly 7 to cover the seeds.

[0047] S2. The seed box in the main body 2 of the planter delivers the seeds quantitatively to the feed pipe 10 through the seed delivery pipe 14. The seeds first pass through the screening element above to smoothly drop the small-grain seeds. The dropped seeds enter the receiving groove 29 outside the rotating column 31. As the position of the receiving groove 29 changes, the seeds fall;

[0048] S3. While sowing, the soil adhering to the lower end of the feed pipe 10 is discharged by moving the scraper 25 up and down.

[0049] Example 2, reference Figure 5-7 The difference between this embodiment and embodiment 1 is that the unloading unit also includes a screening component, which includes a guide rail 15, a column 16, an arc plate 17, an eccentric wheel 22, a second partition 28 and a screening frame 30. The two second partitions 28 are symmetrically installed on the inner side of the unloading tube 10 in an inclined manner. The second partition 28 is located above the rotating column 31. The screening frame 30 is slidably arranged above the two second partitions 28 in the vertical direction. When the screening frame 30 reaches the highest point, a channel for small-particle seeds to pass through will be formed between the screening frame 30 and the second partition 28 on the same side.

[0050] The middle part of the screening frame 30 is arched upward, and the guide rail 15 is vertically opened on the outer wall of the discharge pipe 10. Columns 16 are connected to both sides of the screening frame 30, and the other ends of the two columns 16 pass through the guide rail 15 and extend to the outside of the discharge pipe 10. An arc plate 17 is installed at the end of one of the columns 16. The eccentric wheel 22 is installed on the output shaft of the motor 12, and the arc plate 17 is pushed upward when the eccentric wheel 22 rotates. The column 16 is arranged in a prismatic shape, and the outer wall of the column 16 and the inner wall of the guide rail 15 are in contact with each other.

[0051] When the seeds are planted, the seeds often stick together due to humidity and wet soil adhesion. At the same time, large seeds need to be planted at a deeper depth, so large seeds and small seeds cannot be placed in the same depth of the groove.

[0052] When the seed box 17 is in the upper position, the lower end of the screening frame 30 and the second partition 28 on both sides are inclined downward.

[0053] In this process, not only the seeds are screened, but the screening rack 30 also continuously drives the seeds to move during the up and down reciprocating movement, which can effectively disperse the seeds that are stuck together and make the seed feeding process smoother.

[0054] Example 3, reference Figure 4-8 The difference between this embodiment and Embodiment 1 and Embodiment 2 is that a crankshaft 20 is installed on the output shaft of the motor 12, and a sleeve 19 is sleeved on the crankshaft 20. An inner ring frame 24 is slidably provided on the inner side of the feed tube 10, and the inner ring frame 24 is located below the rotating column 31. An outer ring frame 13 is slidably provided on the outer side of the feed tube 10. A plurality of slide grooves 18 are provided at the lower end of the outer wall of the feed tube 10. The inner ring frame 24 is connected to the outer ring frame 13 by a round rod 23, and the round rod 23 passes through the slide groove 18. A plurality of scrapers 25 are vertically installed at the lower end of the outer ring frame 13, and the scrapers 25 are in contact with the inner wall of the feed tube 10. Scraping teeth 26 are provided at the lower ends of the scrapers 25. An L-shaped rod 21 is movably connected to the sleeve 19 and the outer ring frame 13 through a hinge.

[0055] Since the bottom of the feed pipe 10 is close to the soil, when encountering soil with a high water content, the soil will adhere to the bottom port of the feed pipe 10. When the soil blocks the lower port of the feed pipe 10, some seeds will not be able to fall smoothly. If flushing with water will inevitably increase the viscosity of the soil, making it more difficult to clean.

[0056] To this end, a crankshaft 20 is connected to the output shaft of the motor 12, and the movement of the crankshaft 20 is used to drive the sleeve 19 sleeved outside the crankshaft 20 to achieve a change in position height. The sleeve 19 and the crankshaft 20 can rotate relative to each other. During the reciprocating lifting and lowering process of the sleeve 19 position height, the L-shaped rod 21 and the outer ring frame 13 are driven to achieve synchronous up and down movement. At the same time, the L-shaped rod 21 is connected to the outer ring frame 13 and the sleeve 19 through a hinge, so that the L-shaped rod 21, the sleeve 19 and the outer ring frame 13 can be deflected at an angle, and the outer ring The frame 13 is connected to the inner ring frame 24 through a round rod 23. In this way, during the up and down movement of the inner ring frame 24, the scraper 25 and the scraper teeth 26 are driven to clean the lower end of the discharge pipe 10 where the soil is easily adhered, especially the four corners inside the discharge pipe 10 that are difficult to clean. Secondly, the movement amplitude of the scraper 25 and the scraper teeth 26 inside the discharge pipe 10 is controlled. On the one hand, because the soil is mainly concentrated on the inner side of the lower port of the discharge pipe 10, on the other hand, the scraper 25 is prevented from moving too much, causing serious wear on the inner wall of the discharge pipe 10.

[0057] Example 4, reference Figure 2-3 The difference between this embodiment and Embodiment 1, Embodiment 2 and Embodiment 3 is that the furrowing unit includes a conical plow 4 connected to the bottom of the seeder body 2 through a connecting rod 5, and soil covering components 7 and soil discharge components 8 are symmetrically arranged on the two side walls of the conical plow 4, and the soil covering components 7 and soil discharge components 8 are connected by a fixing plate 9.

[0058] The soil discharge assembly 8 includes a second rotating shaft 81, a second roller 82 and a second frame 83. The second frame 83 is symmetrically installed on the extension line of the side wall of the conical plow 4. The second rotating shaft 81 is rotatably arranged on the inner side of the second frame 83, and the second roller 82 is rotatably arranged on the outer side of the second rotating shaft 81. The soil covering assembly 7 includes a first frame 71, a first rotating shaft 72 and a first roller 73. The first frame 71 is fixed to the second frame 83 through a fixing plate 9. The first rotating shaft 72 is rotatably arranged in the first frame 71, and the first roller 73 is sleeved on the outer side of the first rotating shaft 72.

[0059] The bottom of the second frame 83 is at the same level as the bottom of the first frame 71 , the feed pipe 10 is located between the two first frames 71 , and the angle between the two first frames 71 and the second frame 83 on the same side is greater than ninety degrees.

[0060] In reality, after the trench opener digs the soil, a trench of appropriate depth is obtained. However, the newly dug soil will roll back into the trench. In this way, before the seeds are sown, the soil returns to the trench, causing the depth of the trench to be lower than expected, and the sown seeds cannot grow at the appropriate depth.

[0061] For this reason, Fig.10As shown, after the conical plow 4 is inserted into the soil, the conical plow 4 turns over the soil during its forward movement, and the turned over soil moves along the second roller 82 on the second frames 83 on both sides in the direction away from the groove. When the soil moves to the junction between the second frame 83 and the first frame 71, due to the obtuse angle between the second frame 83 and the first frame 71, as the conical plow 4 continues to move forward, the soil will gather inward along the first frames 71 on both sides, and then the soil will be re-covered in the groove after sowing. The advantage of this arrangement is that the soil can be removed after it is dug up for the first time, and at the same time, after the stones mixed in the soil are dug out, the stones can move along the rolling first roller 73 and the second roller 82, so that the problem of the excavated stones gathering together will not be caused.

[0062] The working principle of the device is:

[0063] The seeder body 2 is fixedly connected to the agricultural vehicle through the connecting frame 3, and the position height of the roller 1 is adjusted by the hydraulic rod so that after the conical plow 4 enters the expected soil depth, the roller 1 just contacts with the field ground.

[0064] In reality, after the trench opener digs the soil, a trench of appropriate depth is obtained. However, the newly dug soil will roll back into the trench. In this way, before the seeds are sown, the soil returns to the trench, causing the depth of the trench to be lower than expected, and the sown seeds cannot grow at the appropriate depth.

[0065] For this reason, Fig.10 As shown, after the conical plow 4 is inserted into the soil, the conical plow 4 turns over the soil during its forward movement, and the turned over soil moves along the second roller 82 on the second frames 83 on both sides in the direction away from the groove. When the soil moves to the junction between the second frame 83 and the first frame 71, due to the obtuse angle between the second frame 83 and the first frame 71, as the conical plow 4 continues to move forward, the soil will gather inward along the first frames 71 on both sides, and then the soil will be re-covered in the groove after sowing. The advantage of this arrangement is that the soil can be removed after being dug up for the first time, and at the same time, after the stones mixed in the soil are dug out, the stones can move along the rolling first roller 73 and the second roller 82, so that the problem of the excavated stones gathering together will not be caused.

[0066] When the seeds are planted, the moisture in the weather and the adhesion of wet soil often cause the seed particles to stick together. At the same time, large-particle seeds require a deeper planting depth, so large-particle seeds and small-particle seeds cannot be placed in the same depth of the groove.

[0067] When the seed box 17 is in the upper position, the lower end of the screening frame 30 and the second partition 28 on both sides are inclined downward.

[0068] In this process, not only the seeds are screened, but the screening rack 30 also continuously drives the seeds to move during the up and down reciprocating movement, which can effectively disperse the seeds that are stuck together and make the seed feeding process smoother.

[0069] When the seeds reach the upper end of the first partition 27, since the two symmetrically arranged first partitions 27 are both inclined downward, the rolled seeds smoothly enter the receiving groove 29 on the outer surface of the rotating column 31. The receiving groove 29 is arranged in an arc shape, and a plurality of receiving grooves 29 are arranged in a ring array on the outer surface of the rotating column 31. Since the internal size of the receiving groove 29 is limited and the design depth of the receiving groove 29 matches the diameter of the small-particle seeds, the number of seeds entering the receiving groove 29 is relatively stable. Then, as the rotating column 31 rotates, the receiving groove 29 that originally opened upward moves to the lower end of the rotating column 31. At this time, the receiving groove 29 containing the seeds opens downward, allowing the seeds to fall smoothly, thereby reducing the difference in the number of seeds sown in a single hole.

[0070] Since the bottom of the feed pipe 10 is close to the soil, when encountering soil with a high water content, the soil will adhere to the bottom port of the feed pipe 10. When the soil blocks the lower port of the feed pipe 10, some seeds will not be able to fall smoothly.

[0071] To this end, a crankshaft 20 is connected to the output shaft of the motor 12, and the movement of the crankshaft 20 is used to drive the sleeve 19 sleeved outside the crankshaft 20 to achieve a change in position height. The sleeve 19 and the crankshaft 20 can rotate relative to each other. During the reciprocating lifting and lowering process of the sleeve 19 position height, the L-shaped rod 21 and the outer ring frame 13 are driven to achieve synchronous up and down movement. At the same time, the L-shaped rod 21 is connected to the outer ring frame 13 and the sleeve 19 through a hinge, so that the L-shaped rod 21, the sleeve 19 and the outer ring frame 13 can be deflected at an angle, and the outer ring The frame 13 is connected to the inner ring frame 24 through a round rod 23. In this way, during the up and down movement of the inner ring frame 24, the scraper 25 and the scraper teeth 26 are driven to clean the lower end of the discharge pipe 10 where the soil is easily adhered, especially the four corners inside the discharge pipe 10 that are difficult to clean. Secondly, the movement amplitude of the scraper 25 and the scraper teeth 26 inside the discharge pipe 10 is controlled. On the one hand, because the soil is mainly concentrated on the inner side of the lower port of the discharge pipe 10, on the other hand, the scraper 25 is prevented from moving too much, causing serious wear on the inner wall of the discharge pipe 10.

[0072] 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. An equidistant seeding device, comprising a roller (1), a seeding machine body (2) and a connecting frame (3), characterized in that : A plurality of seeding units are arranged on one side of the lower part of the seeding machine body (2); The sowing unit includes a furrowing unit and a feeding unit; The feeding unit comprises a driving assembly and a feeding pipe (10) connected via a fixing seat (6); the feeding pipe (10) is connected to a seed box in a sowing machine body (2) via a seed conveying pipe (14); two mutually symmetrical first partitions (27) are arranged obliquely on the inner side of the feeding pipe (10); a rotating column (31) is rotatably arranged on the inner side of the feeding pipe (10); the rotating column (31) is located between the two first partitions (27); a plurality of receiving grooves (29) are distributed in a circular array outside the rotating column (31); and seeds fall into the receiving grooves (29) located at the upper position; after the receiving grooves (29) rotate to the lower position, the seeds leak out of the feeding pipe (10); The unloading unit also includes a screening component; The screening assembly comprises a guide rail (15), a column (16), a curved plate (17), an eccentric wheel (22), a second partition plate (28) and a screening frame (30); The two second baffles (28) are symmetrically installed on the inner side of the feeding tube (10) in an inclined manner, the second baffles (28) are located above the rotating column (31), and the screening frame (30) is slidably arranged above the two second baffles (28) in the vertical direction. When the screening frame (30) reaches the highest point, a passage for small-grain seeds to pass through is formed between the screening frame (30) and the second baffle (28) on the same side; The guide rail (15) is vertically opened on the outer wall of the discharge pipe (10), and columns (16) are connected to both sides of the screening frame (30), and the other ends of the two columns (16) pass through the guide rail (15) and extend to the outside of the discharge pipe (10), and an arc plate (17) is installed at the end of one of the columns (16), and the eccentric wheel (22) is installed on the output shaft of the motor (12), and the arc plate (17) is lifted upward when the eccentric wheel (22) rotates; The column (16) is arranged in a prism shape, and the outer wall of the column (16) and the inner wall of the guide rail (15) fit each other.

2. The equidistant sowing device according to claim 1, characterized in that: The driving assembly comprises a motor mounting frame (11) mounted on one side of a fixing seat (6), a motor (12) being mounted on the motor mounting frame (11), and an output shaft of the motor (12) and a rotating column (31) being connected to each other.

3. The equidistant seeding device according to claim 2, characterized in that: A crankshaft (20) is mounted on the output shaft of the motor (12), and a sleeve (19) is sleeved on the crankshaft (20); An inner ring frame (24) is slidably provided on the inner side of the feed tube (10), and the inner ring frame (24) is located below the rotating column (31); an outer ring frame (13) is slidably provided on the outer side of the feed tube (10); a plurality of slide grooves (18) are provided at the lower end of the outer wall of the feed tube (10); the inner ring frame (24) and the outer ring frame (13) are connected via a round rod (23), and the round rod (23) passes through the slide groove (18); A plurality of scrapers (25) are vertically mounted at the lower end of the outer annular frame (13), and the scrapers (25) are in contact with the inner wall of the discharge pipe (10), and scraper teeth (26) are arranged at the lower ends of the scrapers (25); An L-shaped rod (21) is movably connected between the sleeve (19) and the outer annular frame (13) via a hinge.

4. The equidistant seeding device according to claim 3, characterized in that: The furrowing unit comprises a conical plough (4) connected to the bottom of the seed drill body (2) via a connecting rod (5), and soil covering components (7) and soil discharge components (8) are symmetrically arranged on both side walls of the conical plough (4), and the soil covering components (7) and soil discharge components (8) are connected via a fixing plate (9).

5. The equidistant seeding device according to claim 4, characterized in that: The soil discharge assembly (8) comprises a second rotating shaft (81), a second roller (82) and a second frame (83); the second frame (83) is symmetrically mounted on an extension line of a side wall of the conical plough (4); the second rotating shaft (81) is rotatably arranged on the inner side of the second frame (83); and the second roller (82) is rotatably arranged on the outer side of the second rotating shaft (81).

6. The equidistant seeding device according to claim 5, characterized in that: The soil covering assembly (7) comprises a first frame (71), a first rotating shaft (72) and a first roller (73); the first frame (71) is fixed to a second frame (83) via a fixing plate (9); the first rotating shaft (72) is rotatably disposed in the first frame (71); and the first roller (73) is sleeved on the outside of the first rotating shaft (72).

7. The equidistant seeding device according to claim 6, characterized in that: The bottom of the second frame (83) is at the same level as the bottom of the first frame (71), the feed pipe (10) is located between the two first frames (71), and the angle between the two first frames (71) and the second frame (83) on the same side is greater than ninety degrees.

8. A sowing method using the equidistant sowing device according to claim 7, characterized in that: The specific steps include: S1. The connecting frame (3) is fixed on the agricultural vehicle, and the position height of the roller (1) is adjusted by a hydraulic rod. The conical plow (4) is connected to the connecting rod (5) in an articulated manner. The bottom of the conical plow (4) enters the soil to dig a ditch. The soil turned up by the ditch moves along the soil discharge assembly (8). After planting, the soil passes through the soil covering assembly (7) to cover the seeds. S2. The seed box in the main body (2) of the planter delivers a quantitative amount of seeds to the feed pipe (10) through the seed delivery pipe (14). The seeds first pass through the screening element above to smoothly drop small particles of seeds. The dropped seeds enter the receiving groove (29) outside the rotating column (31). As the position of the receiving groove (29) changes, the seeds fall; S3. While sowing, the soil adhering to the lower end of the feeding pipe (10) is discharged by moving the scraper (25) up and down.

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