Forestry seed precision seeder and seeding method

Abstract

The invention discloses a forestry seed precision seeder and a seeding method, and relates to the field of seeding devices. A forestry seed precision seeder comprises a seed storage shell installed on a transport vehicle, and further comprises a first separating sieve connected into the seed storage shell in a sliding mode, and the first separating sieve is used for receiving seeds entering the seed storage shell and conducting preliminary screening on the seeds and impurities; the separating sieve II is mounted in the seed storage shell, is positioned below the separating sieve I, and is used for carrying out secondary screening on the seeds and the impurities; by arranging the first separating sieve and the second separating sieve, primary and secondary screening is conducted on seeds, impurities in the seeds can be effectively removed, the purity of the seeds is improved, a foundation is laid for good germination and growth of the seeds, a second air bag and a pressure sensor are arranged in a seed outlet hole, a rotating plate is matched, the seed discharging amount can be accurately controlled, and the seed discharging efficiency is improved. Over-dense or over-sparse sowing is avoided, the seed utilization rate is increased, and the forestry planting effect is optimized.

Description

Technical Field

[0001] The present invention belongs to the technical field of seeding devices, and specifically relates to a precise seeding machine for forestry seeds and a seeding method. Background Art

[0002] In the context of the booming development of the modern forestry industry, the seed sowing link plays a crucial role in the cultivation and sustainable development of forestry resources. The quality of seed sowing not only directly affects the survival rate and growth trend of seedlings, but also has a profound impact on the construction and improvement of the entire forestry ecosystem.

[0003] Traditional forestry seed sowing machines face many problems in practical applications. From the perspective of seed pretreatment, during the processes of seed collection, storage, and transportation, various impurities will inevitably be mixed into the seeds. These impurities are diverse in types, including but not limited to soil particles, plant residues, small stones, etc. Soil particles may block the conveying pipelines of the sowing machine, affecting the smooth conveyance of seeds; plant residues not only occupy storage space, but may also breed microorganisms to a certain extent, having a negative impact on seed quality; hard objects such as small stones may cause wear to internal components during the operation of the sowing machine, reducing the service life of the equipment. Most existing sowing machines are only equipped with simple screening devices, and their screening accuracy and efficiency are difficult to meet the requirements of high-quality seed sowing in modern forestry, and they cannot effectively separate these impurities, resulting in the seeds and impurities being sown together during sowing, thus affecting the normal germination of seeds and the healthy growth of seedlings. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a seeding device that can overcome or at least partially solve the above problems.

[0005] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is: A precise seeding machine for forestry seeds, including a seed storage shell installed on a transport vehicle, further including: A first separation sieve, slidably connected inside the seed storage shell, and the first separation sieve is used to receive the seeds entering the seed storage shell and conduct preliminary screening on the seeds and impurities; A second separation sieve, installed inside the seed storage shell, and the second separation sieve is located below the first separation sieve, and the second separation sieve is used to conduct secondary screening on the seeds and impurities; A motor, fixedly connected inside the seed storage shell, a rotating shaft is fixedly connected to the output end of the motor, the rotating shaft penetrates through the first separation sieve and the second separation sieve, and a stirring assembly is arranged on the rotating shaft for stirring the seeds in the first separation sieve and the second separation sieve; A rotating plate, rotatably connected to the rotating shaft; Multiple sets of seed outlet holes are arranged in a ring at the bottom of the seed storage shell. The seed outlet holes are used for discharging seeds. The rotating plate is a circular plate with a notch. The seed outlet holes can be blocked by the rotating plate, and the seeds will enter the seed outlet holes through the notch on the rotating plate. An electronic valve is arranged at the discharge end of the seed outlet holes.

[0006] Further, multiple sets of second air bags are arranged in the seed outlet holes. Through the inflation and expansion and exhaust and contraction of the second air bags, the second air bags in the seed outlet holes can be inflated one by one, so as to transfer the seeds above to below for convenient discharge. A pressure sensor is connected to the uppermost second air bag for detecting the air pressure in the second air bag, so as to judge whether the seeds have accumulated to the position of the uppermost second air bag.

[0007] Further, an air pump is fixedly connected to the seed storage shell. An air outlet pipe is connected to the air outlet end of the air pump, and the air outlet pipe is communicated with the second air bags.

[0008] Furthermore, the stirring assembly includes a stirring rod and a rotating rod. Multiple sets of the stirring rods are all installed at one end of the rotating shaft located inside the first separation sieve, and the rotating rod is fixedly connected to one end of the rotating shaft located in the second separation sieve.

[0009] Still further, multiple air outlet holes are arranged on the rotating rod, and the air outlet holes are communicated with the air outlet pipe.

[0010] Further, multiple mounting rods are fixedly connected to the rotating rod. First air bags are installed on the mounting rods. The first air bags are communicated with the air outlet pipe. Multiple fixing rods are fixedly connected inside the second separation sieve, and rubber sleeves are fixedly connected to the fixing rods. By inflating the first air bags, the first air bags can be inflated, and then cooperate with the rubber sleeves to clean the impurities adhering to the surface of the seeds.

[0011] Furthermore, a feed hopper is fixedly connected to the feed end of the seed storage shell. A spring member is fixedly connected inside the seed storage shell, and the other end of the spring member is fixedly connected to the bottom of the first separation sieve. A pull rope is fixedly connected to the first separation sieve. A tension spring is connected inside the seed storage shell. A baffle is slidably connected to the seed storage shell below the feed hopper. The other end of the pull rope is fixedly connected to the baffle. The seeds enter the first separation sieve through the feed hopper. As the weight increases, the first separation sieve presses down the spring member and moves downward. The pull rope moves, and then the tension spring is compressed. At the same time, the baffle moves to block the bottom of the feed hopper to prevent the seeds from falling.

[0012] Also further, a suction pump is fixedly connected to the seed storage shell. A filter box is connected to the suction pump. The suction pump is used to suck the dust in the seed storage shell and clean it through the filter box.

[0013] Furthermore, a rotary connector connected to the air outlet pipe is installed on the rotating shaft.

[0014] A precise forestry seed sowing method for a precise forestry seed sowing machine includes the following operating steps: Step 1: Pour the seeds into the seed storage shell through the feed hopper, and then let the seeds fall into the first separation sieve. At this time, the first separation sieve moves downward under the influence of gravity, and then the baffle moves to block the feed hopper. Step 2: Start the motor and stir the seeds on the first separation sieve and the second separation sieve through the stirring assembly, so that the seeds pass through the screening and reach the lowest seed outlet hole. Step 3: Through the rotation of the rotating plate, the seeds continuously enter the seed outlet hole through the notch of the rotating plate. The second airbag continuously expands and contracts one by one, so that the seeds are pushed to the bottom, and the pressure sensor is used to detect whether the seeds have accumulated to the top. When it reaches the top, the solenoid valve opens to discharge the seeds and sow the seeds.

[0015] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art: By setting the first separation sieve and the second separation sieve, the present invention conducts primary and secondary screening on the seeds, can effectively remove impurities in the seeds, improve the seed purity, lay a foundation for the good germination and growth of the seeds, and set the second airbag and the pressure sensor in the seed outlet hole, cooperate with the rotating plate, can accurately control the seed discharge amount, avoid over-dense or over-sparse sowing, improve the seed utilization rate, and optimize the forestry planting effect. Description of the Drawings

[0016] In the drawings: Figure 1 is a schematic structural diagram of a precise forestry seed sowing machine and sowing method proposed by the present invention; Figure 2 is a schematic structural diagram of the seed storage shell in a precise forestry seed sowing machine and sowing method proposed by the present invention; Figure 3 is a precise forestry seed sowing machine and sowing method proposed by the present invention Figure 2 Schematic structural diagram of part A therein; Figure 4 is a precise forestry seed sowing machine and sowing method proposed by the present invention Figure 2 Schematic structural diagram of part B therein; Figure 5 is a precise forestry seed sowing machine and sowing method proposed by the present invention Figure 2 Schematic structural diagram of part C therein; Figure 6 is a precise forestry seed sowing machine and sowing method proposed by the present invention Figure 2 Schematic structural diagram of part D therein; Figure 7 A precise seeding machine and seeding method for forestry seeds proposed by the present invention Figure 2 Schematic structural diagram of part E therein; Figure 8 Schematic structural diagram of a rotating plate and a seed outlet hole in a precise seeding machine and seeding method for forestry seeds proposed by the present invention.

[0017] In the figure: 1, seed storage shell; 101, feed hopper; 2, first separation sieve; 201, pull rope; 202, pull spring; 203, baffle; 204, spring member; 3, second separation sieve; 301, fixed rod; 302, rubber sleeve; 4, motor; 401, rotating shaft; 402, stirring rod; 403, air outlet hole; 404, rotating rod; 405, mounting rod; 406, first airbag; 407, rotary joint; 408, rotating plate; 5, seed outlet hole; 501, second airbag; 502, pressure sensor; 6, air pump; 601, air outlet pipe; 7, suction pump; 8, filter box. Specific embodiments

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0019] Embodiment: Refer to Figures 1-8 , a precise seeding machine and seeding method for forestry seeds, including a seed storage shell 1 installed on a transport vehicle, and further including: a first separation sieve 2, slidably connected in the seed storage shell 1, the first separation sieve 2 is used to receive the seeds entering the seed storage shell 1 and conduct preliminary screening on the seeds and impurities; a second separation sieve 3, installed in the seed storage shell 1, and the second separation sieve 3 is located below the first separation sieve 2, the second separation sieve 3 is used to conduct secondary screening on the seeds and impurities; a motor 4, fixedly connected in the seed storage shell 1, a rotating shaft 401 is fixedly connected to the output end of the motor 4, the rotating shaft 401 penetrates through the first separation sieve 2 and the second separation sieve 3, and a stirring assembly is arranged on the rotating shaft 401 for stirring the seeds in the first separation sieve 2 and the second separation sieve 3; a rotating plate 408, rotatably connected to the rotating shaft 401; a plurality of groups of seed outlet holes 5, annularly arranged at the bottom of the seed storage shell 1, the seed outlet holes 5 are used for discharging seeds, the rotating plate 408 is a circular plate with a notch, the seed outlet holes 5 can be blocked by the rotating plate 408, and the seeds will enter the seed outlet holes 5 through the notch on the rotating plate 408, and an electronic valve is arranged at the discharge end of the seed outlet holes 5.

[0020] The seeds first enter the seed storage shell 1 through an external conveying device or by manual pouring, and fall onto the first separation sieve 2. The first separation sieve 2 initially screens the seeds and impurities. Larger impurities are intercepted above the sieve, and the seeds fall through the sieve into the second separation sieve 3 below.

[0021] Start the motor 4. The motor 4 drives the rotating shaft 401 to rotate, thereby enabling the stirring rods 402 and the rotating rods 404 to stir the seeds in the first separation sieve 2 and the second separation sieve 3 respectively. The stirring process helps the seeds pass through the sieve better and further separates the impurities from the seeds. Under the action of the second separation sieve 3, the seeds are secondarily screened to further remove the remaining smaller impurities.

[0022] The screened seeds fall into the bottom area of the seed storage shell 1. The rotating plate 408 rotates with the rotating shaft 401. When the notch on the rotating plate 408 aligns with the seed outlet hole 5, the seeds enter the seed outlet hole 5 through the notch. The solenoid valve opens or closes according to the sowing instruction to achieve the precise discharge of the seeds and complete the sowing operation.

[0023] Multiple groups of second airbags 501 are arranged in the seed outlet hole 5. Through the inflation and deflation of the second airbags 501, the second airbags 501 in the seed outlet hole 5 can be inflated one by one, thereby moving the seeds above to the lower part for easy discharge. A pressure sensor 502 is connected to the uppermost second airbag 501 to detect the air pressure in the second airbag 501, thereby judging whether the seeds have accumulated to the position of the uppermost second airbag 501. When reaching the highest position, the solenoid valve is opened to discharge the seeds for sowing; if not, seeds are continuously replenished.

[0024] After the seeds enter the seed outlet hole 5 through the notch of the rotating plate 408, the air pump 6 inflates the second airbags 501 in the seed outlet hole 5 in sequence according to a preset program. The second airbags 501 are inflated one by one. Since they are in contact with the inner wall of the seed outlet hole 5, the thrust generated by the inflation moves the seeds above gradually downward. When a certain second airbag 501 is inflated to a certain extent, the air pump 6 stops supplying air to it and starts to exhaust. This second airbag 501 gradually shrinks. Subsequently, the air pump 6 supplies air to the next adjacent second airbag 501, repeating the above process to achieve the orderly movement of the seeds in the seed outlet hole 5 for easy discharge.

[0025] During this process, the pressure sensor 502 monitors the air pressure in the top airbag 2 501 in real time. When the seeds accumulate to the position of the top airbag 2 501, a certain pressure will be generated on the airbag 2 501, causing the internal air pressure to change. The pressure sensor 502 transmits the detected air pressure change signal to the control system. The control system determines whether the seeds have accumulated to the top based on the preset pressure threshold. When it is determined that the seeds have accumulated to the top, the control system issues an instruction to open the electronic valve at the discharge end of the seed hole 5 to allow the seeds to be discharged smoothly, thereby achieving precise control of the seed output amount and seed output timing.

[0026] The seed storage shell 1 is fixedly connected to an air pump 6, and the air outlet end of the air pump 6 is connected to an air outlet pipe 601, and the air outlet pipe 601 is communicated with the air bag 2 501.

[0027] When it is necessary to inflate the airbag 2 501 in the seed hole 5, the operator sets the working parameters of the air pump 6 in the control system, such as the air supply pressure, air supply time, etc., according to factors such as seed characteristics and sowing requirements. After the air pump 6 is started, the compressed air is transported to the airbag 2 501 through the air outlet pipe 601. During the transportation process, the good flexibility and pressure resistance of the air outlet pipe 601 ensure that the gas can reach the airbag 2 501 stably and smoothly. After being filled with compressed air, the airbag 2 501 expands and contracts one by one according to a predetermined program to push the seeds. At the same time, the air pump 6 can also supply air to other components such as the airbag 1 406 on the rotating rod 404 according to the instructions of the control system to meet the inflation needs of different functional components and ensure the coordinated operation of various functional modules of the entire seeder.

[0028] The stirring assembly includes a shifting rod 402 and a rotating rod 404. Multiple groups of shifting rods 402 are installed on one end of the rotating shaft 401 located inside the separation screen 2. The rotating rod 404 is fixedly connected to one end of the rotating shaft 401 located on the separation screen 2 3.

[0029] When the motor 4 is started, it drives the rotating shaft 401 to rotate at high speed, and the lever 402 installed on the rotating shaft 401 then makes a circular motion in the separation screen 2. The arc-shaped design of the lever 402 enables it to continuously flip the seeds during the rotation process, breaking the stacking state between the seeds and making the seeds evenly distributed on the separation screen 2, so that they can pass through the screen more smoothly for preliminary screening. At the same time, the flipping action of the lever 402 also helps to further separate larger impurities from the seeds, making it easier for the impurities to be intercepted above the screen.

[0030] The working principle of the rotating rod 404 in the second separating sieve 3 is similar to that of the dialing rod 402. The rotating rod 404 rotates with the rotating shaft 401. When the anti-slip texture on its surface contacts the seeds, it generates frictional force, driving the seeds to move on the second separating sieve 3. The long-strip design of the rotating rod 404 enables it to stir the seeds over a large area in the second separating sieve 3, ensuring that the seeds fully contact the sieve mesh during the secondary screening process, improving the screening efficiency, and further removing the remaining smaller impurities in the seeds.

[0031] Multiple groups of air outlet holes 403 are arranged on the rotating rod 404, and the air outlet holes 403 are communicated with the air outlet pipe 601.

[0032] Multiple groups of mounting rods 405 are fixedly connected to the rotating rod 404. An airbag 406 is mounted on the mounting rod 405. The airbag 406 is communicated with the air outlet pipe 601. And multiple groups of fixing rods 301 are fixedly connected in the second separating sieve 3. A rubber sleeve 302 is fixedly connected to the fixing rod 301. By inflating the airbag 406, the airbag 406 can be inflated, and then in cooperation with the rubber sleeve 302, the impurities adhering to the seed surface are cleaned.

[0033] A feed hopper 101 is fixedly connected to the feed end of the seed storage shell 1. A spring member 204 is fixedly connected in the seed storage shell 1. The other end of the spring member 204 is fixedly connected to the bottom of the first separating sieve 2. A pull rope 201 is fixedly connected to the first separating sieve 2. A tension spring 202 is connected in the seed storage shell 1. A baffle 203 is slidably connected under the feed hopper 101 in the seed storage shell 1. The other end of the pull rope 201 is fixedly connected to the baffle 203. The seeds enter the first separating sieve 2 through the feed hopper 101. As the weight increases, the first separating sieve 2 presses down the spring member 204 and moves downward. The pull rope 201 moves, and then the tension spring 202 is compressed. At the same time, the baffle 203 moves to block the bottom of the feed hopper 101 to prevent the seeds from falling.

[0034] When the seeds are poured into the seed storage shell 1 through the feed hopper 101 and land on the first separating sieve 2, as the weight of the seeds gradually increases, the first separating sieve 2 is gradually pressed downward by the gravity, and the spring member 204 is compressed. While the first separating sieve 2 moves downward, it pulls the pull rope 201. The pull rope 201 drives the baffle 203 to slide in the seed storage shell 1 against the tension of the tension spring 202. When the weight of the seeds on the first separating sieve 2 reaches a certain level, the baffle 203 will completely block the outlet of the feed hopper 101 to prevent the seeds from continuing to fall.

[0035] A suction pump 7 is fixedly connected to the seed storage shell 1. A filter box 8 is connected to the suction pump 7. The suction pump 7 is used to suck the dust in the seed storage shell 1 and clean it through the filter box 8.

[0036] A precision seeder for forestry seeds, a rotary connector 407 connected to the air outlet pipe 601 is installed on the rotating shaft 401.

[0037] A precise seeding method for forestry seeds, which is used for a precise seeding machine for forestry seeds, includes the following operating steps: Step 1: Pour the seeds into the seed storage shell 1 through the feed hopper 101, and then the seeds fall into the first separating sieve 2. At this time, the first separating sieve 2 moves downward under the influence of gravity, and then the baffle 203 moves to block the feed hopper 101; Step 2: Start the motor 4, and stir the seeds on the first separating sieve 2 and the second separating sieve 3 through the stirring assembly, so that the seeds pass through the screening and reach the lowest seed outlet hole 5; Step 3: Through the rotation of the rotating plate 408, the seeds continuously enter the seed outlet hole 5 through the notch of the rotating plate 408. The second airbag 501 continuously expands and contracts one by one, so that the seeds are pushed to the bottom, and the pressure sensor 502 is used to detect whether the seeds have accumulated to the top. When it reaches the top, the solenoid valve opens to discharge the seeds and sow the seeds.

[0038] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments with the same change within the scope of the technical solution of the present invention. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A precise seeding machine for forestry seeds, including a seed storage shell (1) installed on a transport vehicle, characterized in that, It further includes: A first separating sieve (2), which is slidably connected inside the seed storage shell (1). The first separating sieve (2) is used to receive the seeds entering the seed storage shell (1) and conduct a preliminary screening of the seeds and impurities; A second separating sieve (3), which is installed inside the seed storage shell (1), and the second separating sieve (3) is located below the first separating sieve (2). The second separating sieve (3) is used to conduct a secondary screening of the seeds and impurities; A motor (4), which is fixedly connected inside the seed storage shell (1). A rotating shaft (401) is fixedly connected to the output end of the motor (4). The rotating shaft (401) penetrates through the first separating sieve (2) and the second separating sieve (3), and a stirring assembly is arranged on the rotating shaft (401) for stirring the seeds inside the first separating sieve (2) and the second separating sieve (3); A rotating plate (408), which is rotatably connected to the rotating shaft (401); Multiple seed outlet holes (5), which are arranged in a ring at the bottom of the seed storage shell (1). The seed outlet holes (5) are used for discharging seeds. The rotating plate (408) is a circular plate with a notch. The seed outlet holes (5) can be blocked by the rotating plate (408), and the seeds will enter the seed outlet holes (5) through the notch on the rotating plate (408). An electronic valve is arranged at the discharge end of the seed outlet holes (5).

2. The precision seeder for forestry seeds according to claim 1, characterized in that, Multiple second air bags (501) are arranged inside the seed outlet holes (5). Through the inflation and deflation of the second air bags (501), the second air bags (501) inside the seed outlet holes (5) can be inflated one by one, so as to transfer the seeds above to below for easy discharge. A pressure sensor (502) is connected to the uppermost second air bag (501) for detecting the air pressure inside the second air bag (501) to judge whether the seeds have accumulated to the position of the uppermost second air bag (501).

3. The precision seeder for forestry seeds according to claim 2, characterized in that, An air pump (6) is fixedly connected to the seed storage shell (1). An air outlet pipe (601) is connected to the air outlet end of the air pump (6), and the air outlet pipe (601) is communicated with the second air bags (501).

4. A precise seeding machine for forestry seeds according to claim 3, characterized in that, The stirring assembly includes a stirring rod (402) and a rotating rod (404). Multiple stirring rods (402) are all installed at one end of the rotating shaft (401) located inside the first separating sieve (2), and the rotating rod (404) is fixedly connected to one end of the rotating shaft (401) located inside the second separating sieve (3).

5. The precision seeder for forestry seeds according to claim 4, wherein, Multiple air outlet holes (403) are arranged on the rotating rod (404), and the air outlet holes (403) are communicated with the air outlet pipe (601).

6. The precision seeder for forestry seeds according to claim 5, characterized in that, Multiple mounting rods (405) are fixedly connected to the rotating rod (404). An air bag (406) is installed on the mounting rod (405). The air bag (406) is communicated with the air outlet pipe (601). Multiple fixing rods (301) are fixedly connected inside the second separating sieve (3), and a rubber sleeve (302) is fixedly connected to the fixing rods (301). By inflating the air bag (406), the air bag (406) can be inflated, and then in cooperation with the rubber sleeve (302), the impurities adhering to the seed surface can be cleaned.

7. The precision seeder for forestry seeds according to claim 6, wherein, A feed hopper (101) is fixedly connected to the feeding end of the seed storage shell (1). A spring member (204) is fixedly connected inside the seed storage shell (1). The other end of the spring member (204) is fixedly connected to the bottom of the first separation sieve (2). A pull rope (201) is fixedly connected to the first separation sieve (2). A tension spring (202) is connected inside the seed storage shell (1). A baffle (203) is slidably connected to the seed storage shell (1) below the feed hopper (101). The other end of the pull rope (201) is fixedly connected to the baffle (203). Seeds enter the first separation sieve (2) through the feed hopper (101). As the weight increases, the first separation sieve (2) presses down the spring member (204) and moves downward. The pull rope (201) moves, and then the tension spring (202) is compressed. At the same time, the baffle (203) moves to block the bottom of the feed hopper (101) to prevent the seeds from falling.

8. A precise seeder for forestry seeds according to claim 7, characterized in that, A suction pump (7) is fixedly connected to the seed storage shell (1). A filter box (8) is connected to the suction pump (7). The suction pump (7) is used to suck the dust inside the seed storage shell (1) and clean it through the filter box (8).

9. The precision seeder for forestry seeds according to claim 3, characterized in that, A rotary connector (407) connected to the air outlet pipe (601) is installed on the rotating shaft (401).

10. A precise seeding method for forestry seeds, used for a precise seeding machine for forestry seeds as described in claim 8, characterized in that, It includes the following operation steps: Step 1: Pour the seeds into the seed storage shell (1) through the feed hopper (101), and then the seeds fall into the first separation sieve (2). At this time, the first separation sieve (2) moves downward under the influence of gravity, and then the baffle (203) moves to block the feed hopper (101). Step 2: Start the motor (4), and stir the seeds on the first separation sieve (2) and the second separation sieve (3) through the stirring assembly, so that the seeds pass through the screening and reach the lowest seed outlet hole (5). Step 3: Through the rotation of the rotating plate (408), the seeds continuously enter the seed outlet hole (5) through the notch of the rotating plate (408). The second airbag (501) continuously expands and contracts one by one, so that the seeds are pushed to the bottom, and the pressure sensor (502) is used to detect whether the seeds have been piled up to the top. When it reaches the top, the solenoid valve opens to discharge the seeds for seeding the seeds.

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