Seed selection and automatic sowing machine

Abstract

The utility model relates to the technical field of traditional Chinese medicinal material planting, in particular to a seed selection and automatic seeding machine which comprises a working plate, two traction rods fixed on the left side surface of the working plate, a plurality of supporting columns fixed at the bottom end of the working plate, a supporting plate fixed at the bottom ends of the supporting columns, and universal wheels mounted at the bottom end of the supporting plate. Through the arrangement of the working plate, the seeding box, the plurality of supporting legs, the plurality of springs, the vibration motor and the sieve plate, traditional Chinese medicinal material seeds added into the seeding box can be screened; by arranging a material passing box and a material passing pipe and forming a discharging groove in the right side surface of the sowing box, traditional Chinese medicine seeds with large particles on a sieve plate can be conveyed into the sowing box, by arranging a shielding mechanism, the discharging groove formed in the right side surface of the sowing box can be shielded, and the phenomenon that the traditional Chinese medicine seeds with the large particles on the sieve plate leak is prevented; the traditional Chinese medicinal material seeds do not need to be manually screened before sowing, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of Chinese medicinal material planting, in particular to a seed selection and automatic seeding machine. Background Art

[0002] Traditional Chinese medicinal materials emphasize authentic medicinal materials, which refer to medicinal materials produced in a region with specific natural conditions and ecological environment. Some Chinese medicinal materials are plant roots. Chinese medicinal materials need to be sown during the planting process, and a seeder is needed during the sowing process.

[0003] The patent with publication number CN220108664U discloses a Chinese medicinal material planting machine, including a mobile platform, a soil covering box is fixedly connected to the upper surface of the mobile platform, a sowing box is fixedly connected to the upper surface of the mobile platform, a hydraulic cylinder is fixedly connected to the inner wall of the soil covering box, a stirring roller is fixedly connected to the output end of the first motor, a soil covering pipe is fixedly connected to the lower surface of the inner wall of the soil covering box, a feeding port is provided on the inner wall of the sowing box, an electronic valve is provided on the inner wall of the feeding port, a second motor is fixedly connected to the box wall of the sowing box, a sowing roller is fixedly connected to the output end of the second motor, a discharge port is provided on the lower surface of the sowing box, a hydraulic rod is fixedly connected to the output end of the hydraulic cylinder, and a soil turning plate is fixedly connected to the lower end of the hydraulic rod.

[0004] Although the device is provided with a stirring roller, when the fertilizer and soil are poured into the soil covering box together, the stirring roller can stir the fertilizer so that the fertilizer is evenly mixed into the soil, thereby shortening the maturation time of the Chinese medicinal materials and increasing the quality of the sown Chinese medicinal materials. However, the device does not have a structure for screening the Chinese medicinal material seeds, so that seeds with fuller particles cannot be screened out, and the seeds need to be screened manually before sowing. The manual screening method is not only inefficient, but also time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of the utility model is to provide a seed selection and automatic seeding machine to solve the problem that the device proposed in the above-mentioned background technology has no structure for screening Chinese medicinal material seeds, so that seeds with fuller particles cannot be screened out, and seeds need to be screened manually before sowing. The manual screening method is not only inefficient, but also time-consuming and labor-intensive.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The seed selection and automatic seeder comprises a working plate, two traction rods fixed on the left side surface of the working plate, a plurality of support columns fixed to the bottom end of the working plate, a support plate fixed to the bottom end of the support column, a universal wheel installed at the bottom end of the support plate, a seeding box is arranged above the working plate, a plurality of support legs are fixed to the outer wall of the seeding box, a spring is installed between the support leg and the working plate, a vibration motor is installed on the left outer wall of the working plate, an obliquely arranged sieve plate is installed on the inner wall of the seeding box, a discharge trough connected to the inner cavity of the seeding box and corresponding to the position of the sieve plate is arranged on the right side surface of the seeding box, a material passing box located below the material passing trough on the right side surface of the seeding box is fixed on the right side surface of the seeding box, and the material passing box is connected to the seeding box through a material passing pipe, and also comprises:

[0008] The shielding mechanism is arranged on the right side surface of the seeding box and is used for shielding the discharge trough on the right side surface of the seeding box. The shielding mechanism includes a mounting plate fixed on the right side surface of the seeding box near the top end, a rotating column rotatably connected to the mounting plate, a screw coaxially fixed to the bottom surface of the rotating column, a rotating rod coaxially fixed to the bottom surface of the screw and rotatably connected to the inner bottom wall of the material passing box, two gears located above the mounting plate and used for driving the rotating column to rotate, and a motor installed on the top surface of the mounting plate and used for driving the two gears to rotate, the two gears are meshed with each other, and the right side surface of the seeding box is provided with a baffle plate which fits tightly therewith and is used for shielding the discharge trough on its right side surface, and the baffle plate is slidably connected to the right side surface of the seeding box and is threadedly connected to the screw.

[0009] As a preferred embodiment, the shielding mechanism further includes a rotating shaft coaxially connected to the output shaft of the motor, and the two gears are coaxially fixed on the rotating shaft and the circumferential outer wall of the rotating column respectively.

[0010] As a preferred embodiment, the right side surface of the seed box is provided with two guide grooves located above the discharge groove on its right side surface, and the left side surface of the baffle is fixed with two guide blocks slidably connected to the guide grooves on the same side of the right side surface of the seed box.

[0011] As a preferred embodiment, a fixing plate is fixed to the left surface of the seed box, the vibration motor is installed on the top surface of the fixing plate, the support leg is L-shaped, and gaskets are fixed between the spring and the working plate and the vertical rod end of the support leg on the same side.

[0012] As a preferred embodiment, a through groove matched with the size of the sowing box is provided on the top surface of the working plate, a feed funnel connected with the inner cavity of the sowing box is fixed on the top surface of the sowing box, a feed valve is installed on the outer wall of the feed funnel tube body, a sowing pipe connected with the inner cavity of the sowing box is fixed at the bottom end of the sowing box, a sowing pipe is installed on the outer wall of the sowing pipe, and the sowing pipe passes through the through groove on the top surface of the working plate and extends to the bottom of the working plate.

[0013] As a preferred embodiment, the size of the sieve plate is adapted to the inner cavity size of the seeding box, the discharge groove on the right side surface of the seeding box corresponds to the position of the sieve plate and the size is adapted thereto, the size of the feed box is adapted to the size of the discharge groove on the right side surface of the seeding box, the baffle corresponds to the position of the inclined discharge groove on the right side surface of the seeding box and the size is adapted thereto, the vertical tube end of the feed pipe is fixed on the bottom surface of the feed box, the inclined tube end of the feed pipe passes through the outer wall of the seeding box and extends to the inside of the seeding box near the bottom, the bottom ends of the seeding box and the feed box are both structured to be concave all around toward the middle, and the degree of concavity of the bottom ends of the seeding box and the feed box are both 12-28°.

[0014] As a preferred embodiment, a U-shaped shield is fixed on the top surface of the material passing box, and the top surface of the shield is located above the discharge trough on the right side surface of the seed box.

[0015] As a preferred embodiment, the shielding mechanism further includes a protection box fixed on the top surface of the mounting plate, the motor is located inside the protection box, and the rotating shaft passes through the top surface of the protection box.

[0016] As a preferred embodiment, the transverse cross-sectional shape of the guide groove on the right side surface of the seed box is I-shaped, and the shape of the guide block is I-shaped to match the shape of the guide groove on the right side surface of the seed box.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model can screen the Chinese medicinal material seeds added to the seeding box by setting a working plate, a seeding box, a plurality of supporting legs, a plurality of springs, a vibration motor and a sieve plate, and can transport the Chinese medicinal material seeds with larger particles on the sieve plate to the inside of the seeding box by setting a feeding box, a feeding pipe and a discharge trough on the right surface of the seeding box. The shielding mechanism can shield the discharge trough on the right surface of the seeding box to prevent the Chinese medicinal material seeds with larger particles on the sieve plate from leaking, and there is no need to manually screen the Chinese medicinal material seeds before sowing, which saves time and effort;

[0019] 2. In the utility model, the right side surface of the seeding box is provided with two guide grooves located above the discharge groove on the right side surface thereof, and the left side surface of the baffle is fixed with two guide blocks which are slidably connected to the guide grooves on the same side of the right side surface of the seeding box, so as to guide the movement of the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is one of the partial explosion diagrams in the utility model;

[0022] Figure 3 It is one of the partial structural schematic diagrams in the utility model;

[0023] Figure 4 This is the second schematic diagram of the local structure in the utility model;

[0024] Figure 5 This is the third schematic diagram of the local structure in the utility model;

[0025] Figure 6 It is an enlarged view of point A in the utility model;

[0026] Figure 7 This is the second partial explosion diagram in the utility model;

[0027] Figure 8 This is a schematic diagram of the internal structure of the seeding box in the utility model;

[0028] Fig. 9 It is a schematic diagram of the overall structure of the shielding mechanism in the utility model;

[0029] Fig.10 It is a partial exploded view of the shielding mechanism in the utility model.

[0030] The meaning of each number in the figure is:

[0031] 1. Working plate; 2. Seeding box; 3. Support leg; 4. Spring; 5. Fixed plate; 6. Vibration motor; 7. Shielding mechanism; 71. Mounting plate; 72. Rotating column; 73. Screw; 74. Rotating rod; 75. Baffle; 76. Guide block; 77. Gear; 78. Motor; 79. Rotating shaft; 710. Protective box; 8. Screen plate; 9. Feed box; 10. Baffle cover; 11. Feed pipe; 12. Feed hopper; 13. Feed valve; 14. Seeding pipe; 15. Solenoid valve; 16. Gasket; 17. Traction rod; 18. Support column; 19. Support plate; 20. Universal wheel. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-Figure 10The utility model provides a technical solution: a seed selection and automatic seeding machine, comprising a working plate 1, two traction rods 17 fixed on the left side surface of the working plate 1, a plurality of support columns 18 fixed at the bottom end of the working plate 1, a support plate 19 fixed at the bottom end of the support column 18, a universal wheel 20 installed at the bottom end of the support plate 19, a seeding box 2 is arranged above the working plate 1, a plurality of support legs 3 are fixed on the outer wall of the seeding box 2, a spring 4 is installed between the support leg 3 and the working plate 1, a vibration motor 6 is installed on the left outer wall of the working plate 1, an obliquely arranged sieve plate 8 is installed on the inner wall of the seeding box 2, a discharge trough connected to the inner cavity of the seeding box 2 and corresponding to the position of the sieve plate 8 is provided on the right side surface of the seeding box 2, a material passing box 9 located below the discharge trough on the right side surface of the seeding box 2 is fixed on the right side surface of the seeding box 2, and the material passing box 9 is connected to the seeding box 2 through a material passing pipe 11, and also includes:

[0034] The shielding mechanism 7 is arranged on the right side surface of the seed box 2 and is used for shielding the discharge chute on the right side surface of the seed box 2. The shielding mechanism 7 includes a mounting plate 71 fixed on the right side surface of the seed box 2 near the top, a rotating column 72 rotatably connected to the mounting plate 71, a screw 73 coaxially fixed to the bottom surface of the rotating column 72, a rotating rod 74 coaxially fixed to the bottom surface of the screw 73 and rotatably connected to the inner bottom wall of the material passing box 9, two gears 77 located above the mounting plate 71 and used for driving the rotating column 72 to rotate, and a motor 78 installed on the top surface of the mounting plate 71 and used for driving the two gears 77 to rotate. The two gears 77 are meshed with each other, and the right side surface of the seed box 2 is provided with a motor 78 which fits closely therewith and is used for shielding the discharge chute on its right side surface. The shielding baffle 75 is slidably connected to the right side surface of the seeding box 2 and is threadedly connected to the screw 73. By arranging the working plate 1, the seeding box 2, a plurality of supporting legs 3, a plurality of springs 4, a vibration motor 6 and a sieve plate 8, the Chinese medicinal material seeds added to the inside of the seeding box 2 can be screened. By arranging the feeding box 9, the feeding pipe 11 and the unloading trough on the right side surface of the seeding box 2, the Chinese medicinal material seeds with larger particles on the sieve plate 8 can be transported to the inside of the seeding box 2. By arranging the shielding mechanism 7, the unloading trough on the right side surface of the seeding box 2 can be shielded to prevent the Chinese medicinal material seeds with larger particles on the sieve plate 8 from leaking. There is no need to manually screen the Chinese medicinal material seeds before sowing, which saves time and effort.

[0035] In this embodiment, the shielding mechanism 7 also includes a rotating shaft 79 coaxially connected to the output shaft of the motor 78, and two gears 77 are coaxially fixed on the rotating shaft 79 and the circumferential outer wall of the rotating column 72, which can smoothly drive the two gears 77 to rotate, and then smoothly drive the screw 73 to rotate.

[0036] In addition, the right side surface of the seed box 2 is provided with two guide grooves located above the discharge groove on the right side surface thereof, and the left side surface of the baffle 75 is fixed with two guide blocks 76 which are slidably connected to the guide grooves on the same side of the right side surface of the seed box 2, which can guide the movement of the baffle 75.

[0037] Furthermore, a fixing plate 5 is fixed to the left surface of the seed box 2, and a vibration motor 6 is installed on the top surface of the fixing plate 5. The support leg 3 is in an L-shape, and a gasket 16 is fixed between the spring 4 and the working plate 1 and the vertical rod end of the support leg 3 on the same side, so that the vibration motor 6 and several springs 4 can be installed.

[0038] Specifically, a through groove matched with the size of the sowing box 2 is provided on the top surface of the working plate 1, a feeding funnel 12 connected with the inner cavity thereof is fixed on the top surface of the sowing box 2, a feeding valve 13 is installed on the outer wall of the tube body of the feeding funnel 12, a sowing pipe 14 connected with the inner cavity thereof is fixed at the bottom end of the sowing box 2, a solenoid valve 15 is installed on the outer wall of the sowing pipe 14, the sowing pipe 14 passes through the through groove on the top surface of the working plate 1 and extends to the bottom of the working plate 1, so that Chinese medicinal seeds can be smoothly added into the sowing box 2, and the seeds in the sowing box 2 can also be smoothly unloaded.

[0039] More specifically, the size of the sieve plate 8 is adapted to the size of the inner cavity of the seed box 2, the discharge trough on the right side surface of the seed box 2 corresponds to the position of the sieve plate 8 and the size is adapted, the size of the feed box 9 is adapted to the size of the discharge trough on the right side surface of the seed box 2, the baffle 75 corresponds to the position of the oblique discharge trough on the right side surface of the seed box 2 and the size is adapted, the vertical pipe end of the feed pipe 11 is fixed on the bottom surface of the feed box 9, the oblique pipe end of the feed pipe 11 passes through the outer wall of the seed box 2 and extends to the inside of the seed box 2 near the bottom, and the bottom ends of the seed box 2 and the feed box 9 are all in a structure that is concave toward the middle. The depression degree of the bottom ends of the sowing box 2 and the feeding box 9 is 12-28°. In this paper, the depression degree of the bottom ends of the sowing box 2 and the feeding box 9 is preferably 22° to prevent the seeds from passing through the gap between the sieve plate 8 and the inner wall of the sowing box 2. The baffle 75 can smoothly block the inclined discharge chute on the right side surface of the sowing box 2, and the seeds discharged from the inclined discharge chute on the right side surface of the sowing box 2 can smoothly enter the feeding box 9, and the seeds inside the feeding box 9 can smoothly enter the area below the sieve plate 8 inside the sowing box 2, and the seeds inside the sowing box 2 can be smoothly discharged.

[0040] It is worth noting that a U-shaped shield 10 is fixed on the top surface of the feed box 9, and the top surface of the shield 10 is located above the discharge chute on the right side surface of the sowing box 2, which can block the seeds discharged from the inclined discharge chute on the right side surface of the sowing box 2 to prevent seeds from leaking.

[0041] It is worth noting that the shielding mechanism 7 also includes a protection box 710 fixed on the top surface of the mounting plate 71, the motor 78 is located inside the protection box 710, and the rotating shaft 79 passes through the top surface of the protection box 710, which can protect the motor 78 and thus extend the service life of the motor 78.

[0042] It is worth emphasizing that the transverse cross-sectional shape of the guide groove on the right side surface of the seed box 2 is I-shaped, and the shape of the guide block 76 is I-shaped that matches the shape of the guide groove on the right side surface of the seed box 2, which can make the connection between the guide block 76 and the guide groove on the right side surface of the seed box 2 tighter, and indirectly make the baffle 75 more stable during movement.

[0043] Finally, it should be noted that the vibration motor 6, motor 78, solenoid valve 15 and other components involved in the utility model are all universal standard parts or components known to technical personnel in this field, and their structures and principles are all known to technical personnel through technical manuals or through conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adaptive controllers and power supplies, are connected through wires. The specific connection means should refer to the working principle of the utility model. The electrical connection between each electrical component is completed in a sequential working order, and the detailed connection means are all well-known technologies in the field.

[0044] In the specific use of this embodiment, when it is necessary to sow Chinese medicinal material seeds, first, the entire device is connected to the external tractor through two traction rods 17, and then the feed valve 13 on the outer wall of the feed hopper 12 is opened, and a proper amount of seeds are added to the inside of the sowing box 2 through the feed hopper 12, and then the vibration motor 6 is started by the external PLC. After the vibration motor 6 is started, the sowing box 2 can be driven to vibrate. The sowing box 2 vibrates under the action of a plurality of supporting legs 3, a plurality of springs 4 and a plurality of gaskets 16. The vibration of the sowing box 2 drives the sieve plate 8 fixed thereto to vibrate, and the vibration of the sieve plate 8 can screen the Chinese medicinal material seeds. After screening for a period of time, the vibration motor 6 is turned off by the external PLC, and then the external waste seed collection device is placed on the ground at a position corresponding to the position of the sowing tube 14, and then the solenoid valve 15 is opened by the external PLC, so that the seeds with smaller particles after screening can be discharged. After the small-particle seeds are discharged, the solenoid valve 15 is closed by the external PLC;

[0045] Then, the motor 78 is started by the external PLC, and the output shaft of the motor 78 rotates to drive the rotating shaft 79 connected thereto coaxially to rotate, and the rotating shaft 79 rotates to drive the coaxially fixed gear 77 on the same side to rotate, and the gear 77 rotates to drive another gear 77 meshing therewith to rotate, and the other gear 77 rotates to drive the rotating column 72 coaxially fixed thereto to rotate, and the rotating column 72 rotates to drive the screw 73 coaxially fixed thereto to rotate, and the screw 73 rotates to drive the baffle 75 threadedly connected thereto to move upward, and the baffle 75 moves upward between the two guide blocks 76 and the two guide blocks on the right side surface of the seeding box 2. The vibrating motor 6 is started by the external PLC when the baffle plate 75 moves to no longer block the oblique discharge groove on the right side of the sowing box 2. After the vibration motor 6 is started, the sowing box 2 and the sieve plate 8 can be driven to vibrate, so that the seeds with full grains on the top surface of the sieve plate 8 can be discharged from the oblique discharge groove on the right side of the sowing box 2. The discharged seeds then enter the inside of the feed box 9. The seeds entering the inside of the feed box 9 then enter the area below the sieve plate 8 inside the sowing box 2 through the feed pipe 11. When the discharge is completed, the vibration motor 6 is turned off by the external PLC.

[0046] Then, the external tractor is started, and the whole device can be moved by the cooperation of several universal wheels 20. When it moves to the area where sowing is required, the solenoid valve 15 is started by the external PLC. By controlling the start time of the solenoid valve 15, the sowing amount can be controlled, and then the selection and sowing of Chinese medicinal material seeds can be carried out.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A seed selection and automatic seeding machine, comprising a working plate (1), two traction rods (17) fixed on the left side surface of the working plate (1), characterized in that: A plurality of support columns (18) are fixed to the bottom end of the working plate (1), a support plate (19) is fixed to the bottom end of the support column (18), a universal wheel (20) is installed at the bottom end of the support plate (19), a seed box (2) is arranged above the working plate (1), a plurality of support legs (3) are fixed to the outer wall of the seed box (2), a spring (4) is installed between the support leg (3) and the working plate (1), a vibration motor (6) is installed on the left outer wall of the working plate (1), an obliquely arranged sieve plate (8) is installed on the inner wall of the seed box (2), a discharge trough connected to the inner cavity of the seed box (2) and corresponding to the position of the sieve plate (8) is provided on the right side surface of the seed box (2), a material passing box (9) located below the discharge trough on the right side surface of the seed box (2) is fixed on the right side surface of the seed box (2), and the material passing box (9) is connected to the seed box (2) through a material passing pipe (11), and further comprises: The shielding mechanism (7) is arranged on the right side surface of the seeding box (2) and is used to shield the discharge chute on the right side surface of the seeding box (2). The shielding mechanism (7) comprises a mounting plate (71) fixed on the right side surface of the seeding box (2) near the top, a rotating column (72) rotatably connected to the mounting plate (71), a screw rod (73) coaxially fixed to the bottom surface of the rotating column (72), a rotating rod (74) coaxially fixed to the bottom surface of the screw rod (73) and rotatably connected to the inner bottom wall of the material passing box (9), and a mounting plate (71) fixed to the right side surface of the seeding box (2). Two gears (77) are mounted above the mounting plate (71) and are used to drive the rotating column (72) to rotate, and a motor (78) is mounted on the top surface of the mounting plate (71) and is used to drive the two gears (77) to rotate, the two gears (77) are meshed with each other, and the right side surface of the seeding box (2) is provided with a baffle (75) which is tightly fitted therewith and is used to cover the discharge trough on the right side surface of the seeding box (2), and the baffle (75) is slidably connected to the right side surface of the seeding box (2) and is threadedly connected to the screw (73).

2. The seed selection and automatic seeder according to claim 1, characterized in that: The shielding mechanism (7) further comprises a rotating shaft (79) coaxially connected to the output shaft of the motor (78), and the two gears (77) are coaxially fixed on the rotating shaft (79) and the circumferential outer wall of the rotating column (72), respectively.

3. The seed selection and automatic seeder according to claim 1, characterized in that: The right side surface of the seed box (2) is provided with two guide grooves located above the discharge groove on the right side surface thereof, and the left side surface of the baffle (75) is fixed with two guide blocks (76) which are slidably connected to the guide grooves on the same side of the right side surface of the seed box (2).

4. The seed selection and automatic seeder according to claim 1, characterized in that: A fixing plate (5) is fixed on the left side surface of the seed box (2), the vibration motor (6) is installed on the top surface of the fixing plate (5), the support leg (3) is in an L-shape, and a gasket (16) is fixed between the spring (4) and the working plate (1) and the end of the vertical rod of the support leg (3) on the same side.

5. The seed selection and automatic seeder according to claim 1, characterized in that: The top surface of the working plate (1) is provided with a through groove matching the size of the sowing box (2); a feeding funnel (12) connected to the inner cavity of the sowing box (2) is fixed on the top surface; a feeding valve (13) is installed on the outer wall of the tube body of the feeding funnel (12); a sowing pipe (14) connected to the inner cavity of the sowing box (2) is fixed at the bottom end; a sowing pipe (14) connected to the inner cavity of the sowing box (2) is installed on the outer wall of the sowing pipe (14); the sowing pipe (14) passes through the through groove on the top surface of the working plate (1) and extends to the bottom of the working plate (1).

6. The seed selection and automatic seeder according to claim 1, characterized in that: The size of the sieve plate (8) is compatible with the size of the inner cavity of the sowing box (2); the discharge groove on the right side surface of the sowing box (2) corresponds to the position of the sieve plate (8) and the size is compatible; the size of the feed box (9) is compatible with the size of the discharge groove on the right side surface of the sowing box (2); the baffle (75) corresponds to the position of the inclined discharge groove on the right side surface of the sowing box (2) and the size is compatible; the vertical pipe end of the feed pipe (11) is fixed on the bottom surface of the feed box (9); the inclined pipe end of the feed pipe (11) passes through the outer wall of the sowing box (2) and extends to the inside of the sowing box (2) near the bottom end; the bottom ends of the sowing box (2) and the feed box (9) are both in a structure that is concave in the middle from all sides, and the degree of concavity of the bottom ends of the sowing box (2) and the feed box (9) is 12-28 degrees.

7. The seed selection and automatic seeder according to claim 1, characterized in that: A U-shaped shield (10) is fixed on the top surface of the material passing box (9), and the top surface of the shield (10) is located above the discharge trough on the right surface of the seed box (2).

8. The seed selection and automatic seeder according to claim 2, characterized in that: The shielding mechanism (7) further comprises a protection box (710) fixed on the top surface of the mounting plate (71), the motor (78) is located inside the protection box (710), and the rotating shaft (79) passes through the top surface of the protection box (710).

9. The seed selection and automatic seeder according to claim 3, characterized in that: The transverse cross-sectional shape of the guide groove on the right side surface of the seed box (2) is in the shape of an I-beam, and the shape of the guide block (76) is in the shape of an I-beam that matches the shape of the guide groove on the right side surface of the seed box (2).

Images