Precise seeder for small-particle seeds and use method thereof

Abstract

The invention discloses a small-particle seed precision seeder and a use method thereof, and relates to the field of seeding devices. The invention relates to a small-particle seed precision seeding machine, which comprises a seeding machine shell, and further comprises a funnel shell fixedly connected in the seeding machine shell, and a discharge hole is formed in the bottom of the funnel shell; the seed discharging device is connected to the funnel shell, a plurality of groups of seed discharging holes are annularly formed in the seed discharging device, and the seed discharging holes are used for discharging seeds in the funnel shell; the electronic valve is mounted at the discharging end of the seed discharging hole of the seed discharging device; through the arrangement of the expansion air bag, the inner diameter of the seed outlet hole can be continuously changed, then seeds are continuously switched between the vertical state and the inclined state, the situation that the seeds are transversely blocked in the seed outlet hole is effectively avoided, meanwhile, the seeds are switched between the inclined state and the vertical state, gaps between the seeds can be smaller, and the seeds are more uniform. Therefore, the quantity of the seeds discharged from the seed outlet holes is consistent as much as possible, and the use of precision seeding is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of sowing devices, and in particular, relates to a small-particle seed precision seeder and a method for using the same. Background Art

[0002] When planting in agriculture, sowing is required before subsequent cultivation and maintenance operations can be carried out. Therefore, sowing is one of the important conditions for agricultural production. The conventional agricultural seed sowing method uses a vibrating screen or air suction vibration method to make the seeds enter the sowing device and be discharged from the seed outlet of the sowing device to achieve sowing.

[0003] However, when the existing device is in use, it is easy for seeds to get stuck in the seed holes in the sowing device, especially some oval seeds, such as wheat and oats. These seeds are very easy to get stuck in the seed holes of the sowing device, which will cause subsequent seeds to be unable to be discharged, affecting subsequent precision sowing, and there are certain shortcomings. 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 the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a small-particle seed precision seeder, including a seeder housing, and also including: A funnel shell is fixedly connected to the seeder housing, and a discharge port is provided at the bottom of the funnel shell; A seed dispensing device is connected to the funnel shell, and the seed dispensing device is provided with a plurality of groups of seed dispensing holes in a ring shape, and the seed dispensing holes are used to discharge the seeds in the funnel shell; An electronic valve is installed on the discharging end of the seed discharging hole of the seed discharging device; An expansion air bag connected to the seeding hole of the seeding device, and the expansion air bag will reduce the inner diameter of the seeding hole after expansion; A pressure relief pipe connected to the inflatable airbag, a control valve is arranged in the pressure relief pipe, and the pressure relief pipe is used to discharge the gas in the inflatable airbag; An air pump is fixedly connected in the housing of the seed drill, an air outlet end of the air pump is connected to an air outlet pipe, and the air outlet end of the air outlet pipe is connected to multiple groups of connecting pipes, a control valve is arranged in the connecting pipe, and the connecting pipe is connected to the expansion air bag for supplying air to the expansion air bag; The baffle is rotatably connected to the seed dispenser, and a plurality of mounting grooves are arranged on the baffle, and height sensors are connected in the mounting grooves. When the baffle rotates, the baffle will move above part of the seed holes, thereby blocking the seeds in the funnel shell from continuing to enter the blocked seed holes. At the same time, the baffle will move the height sensor above the seed holes, and sense the height of the seeds in the seed holes through the height sensor. When the height reaches the requirement, the electronic valve in the seed holes is opened to discharge the seeds accumulated in the seed holes, and the sowing is completed.

[0006] In order to make the seeds flow, further, a motor is fixedly connected to the seeder housing, a rotating shaft is fixedly connected to the output end of the motor, a stirring auger is fixedly connected to the rotating shaft, and the stirring auger is used to stir the seeds in the seeder housing to make the seeds flow and facilitate the seeds to enter the seeding hole of the seed dispenser.

[0007] Furthermore, the stirring auger is arranged in an inverted cone shape.

[0008] In order to supply air to the inflatable airbag during rotation, further, a rotating connector is connected to the end of the rotating shaft away from the motor, and the air inlet end of the rotating connector is connected to the air outlet end of the air outlet pipe, and the rotating connector is used to supply air to the inflatable airbag during rotation.

[0009] Furthermore, the baffle is fixedly connected to the rotating connector.

[0010] In order to promote the rapid discharge of seeds, further, a high-pressure nozzle is fixedly connected in the mounting groove of the baffle, the air inlet end of the high-pressure nozzle is connected to the air outlet pipe, and the high-pressure nozzle is used to inject high-pressure gas into the seed outlet hole where the seed height reaches the standard, so as to promote the rapid discharge of seeds.

[0011] Furthermore, an arc-shaped wall is provided in the shell of the seeder, and a piston is fixedly connected to the rotating shaft. After the piston contacts the arc-shaped wall, gas is continuously discharged to the outside. A plurality of groups of air outlets are provided on the stirring auger, and the air outlets are connected to the air outlet end of the piston.

[0012] In order to stir the seeds, the piston member further includes a piston cylinder, a piston rod, and a spring member. The piston cylinder is fixedly connected to the rotating shaft, the piston rod is slidably connected in the piston cylinder, and one end of the piston rod passes through the piston cylinder and abuts against the arc wall. The two ends of the spring member respectively abut against the piston cylinder and the piston rod for resetting the piston rod. The piston cylinder is provided with an air inlet and an exhaust pipe, and the exhaust pipe is communicated with the air outlet.

[0013] Furthermore, one-way valves are provided in both the air inlet and the exhaust pipe.

[0014] A method for using a small-particle seed precision seeder includes the following steps: Step 1: Pour the seeds into the seeder housing, and start the motor and air pump to rotate the baffle, while the inflatable airbag continuously expands and then shrinks to prevent the seeds from getting stuck in the seeding hole; Step 2: Continuously sense the height of the seeds piled in the seed hole through a height sensor until it reaches a suitable height; Step 3: Open the electronic valve and spray high-pressure gas through the high-pressure nozzle to quickly discharge the seeds from the seed hole to complete precision sowing, and then the seeds enter the seed hole again; Step 4: After completing sowing, turn off the motor and air pump.

[0015] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: the present invention arranges the expansion airbag so that the inner diameter of the seed hole can be continuously changed, so that the seeds can be continuously switched between the vertical and inclined states, effectively avoiding the seeds being blocked laterally in the seed hole. At the same time, the switching of the seeds between the inclined and vertical states will make the gaps between the seeds smaller, so that the number of seeds discharged from the seed hole can be as consistent as possible, which is convenient for the use of precision sowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the attached picture: Figure 1 A schematic diagram of the structure of a small-grain seed precision seeder proposed by the present invention Figure 1 ; Figure 2 A schematic diagram of the structure of a small-grain seed precision seeder proposed by the present invention Figure 2 ; Figure 3 A schematic top view of a small-grain seed precision seeder proposed by the present invention; Figure 4 A cross-sectional schematic diagram of a small-grain seed precision seeder proposed by the present invention; Figure 5 A small-grain seed precision seeder proposed by the present invention Figure 4 Schematic diagram of the structure of part A; Figure 6 A small-grain seed precision seeder proposed by the present invention Figure 4 The structural diagram of part B; Figure 7 A small-grain seed precision seeder proposed by the present invention Figure 6 Schematic diagram of the structure of part C; Figure 8 A schematic diagram of the structure of a seed dispenser in a small-grain seed precision seeder proposed by the present invention Figure 1 ; Fig. 9 A schematic diagram of the structure of a seed dispenser in a small-grain seed precision seeder proposed by the present invention Figure 2 ; Fig.10 This is a schematic structural diagram of a baffle in a small-particle seed precision seeder proposed by the present invention.

[0017] In the figure: 1. seeder housing; 101. funnel shell; 102. arc wall; 103. motor; 104. stirring auger; 1041. air outlet; 105. rotary connector; 106. baffle; 107. high-pressure nozzle; 201. piston cylinder; 202. piston rod; 203. spring member; 204. exhaust pipe; 3. seed dispenser; 301. electronic valve; 302. expansion air bag; 303. pressure relief pipe; 4. air pump; 401. air outlet pipe; 402. connecting pipe; 5. height sensor. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the 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] Example 1: Reference Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10A small-particle seed precision seeder includes a seeder housing 1, and also includes: a funnel shell 101, which is fixedly connected to the seeder housing 1, and a discharge port is provided at the bottom of the funnel shell 101; a seed dispenser 3, which is connected to the funnel shell 101, and a plurality of groups of seed discharge holes are provided in a ring shape on the seed dispenser 3, and the seed discharge holes are used to discharge the seeds in the funnel shell 101; an electronic valve 301, which is installed on the discharge end of the seed discharge hole of the seed dispenser 3; an expansion airbag 302, which is connected to the seed discharge hole of the seed dispenser 3, and the expansion airbag 302 will reduce the inner diameter of the seed discharge hole after expansion; a pressure relief pipe 303, which is connected to the expansion airbag 302, and a control valve is provided in the pressure relief pipe 303, and the pressure relief pipe 303 is used to discharge the gas in the expansion airbag 302; an air pump 4, which is fixedly connected to the seeder housing 1, and an air outlet is connected to the air outlet end of the air pump 4 Tube 401, multiple groups of connecting tubes 402 are connected to the outlet end of the air outlet pipe 401, a control valve is arranged in the connecting tube 402, and the connecting tube 402 is connected to the expansion airbag 302 for supplying air to the expansion airbag 302; the baffle 106 is rotatably connected to the seed dispenser 3, and multiple groups of mounting grooves are arranged on the baffle 106, and a height sensor 5 is connected in the mounting groove. When the baffle 106 rotates, the baffle 106 will move above part of the seeding hole, thereby blocking the seeds in the funnel shell 101 from continuing to enter the blocked seeding hole. At the same time, the baffle 106 will move the height sensor 5 above the seeding hole, and sense the seed height in the seeding hole through the height sensor 5. When the height reaches the requirement, the electronic valve 301 in the seeding hole is opened to discharge the seeds accumulated in the seeding hole to complete the sowing.

[0020] When the device is in use, the seeds to be sown are first poured into the seeder housing 1, and then the seeder housing 1 is connected to the transport equipment so that the seeder housing 1 can move at a constant speed in the area to be planted, and then the air pump 4 can be started, and the air pump 4 will continuously inject gas into the expansion airbag 302, but the amount of gas discharged from the pressure relief pipe 303 on the expansion airbag 302 is greater than the amount of gas injected into the expansion airbag 302 by the air pump 4. At this time, the expansion airbag 302 will continue to expand under the action of the pressure relief pipe 303, and then shrink, and this cycle will continue. When the expansion airbag 302 shrinks, the inner diameter of the seed outlet hole on the seed outlet 3 is larger, and the seeds can pass through The seeds fall into the expansion airbag 302 in an inclined manner and then accumulate in the seeding hole. Since the expansion airbag 302 is constantly expanding and shrinking at this time, the gas is constantly discharged outward through the pressure relief pipe 303, and the gas can be directly discharged from the seeding device 3. If a special gas outlet port is provided at the bottom of the seeding device 3, the seeds will constantly change, and then the seeds on the upper side will fall into the gaps between the seeds below. Since the seeds will continue to change between the inclined and vertical states later, this method can effectively prevent the seeds from getting stuck together. When the expansion airbag 302 shrinks later, if the electronic valve 301 below is opened, the seeds can be discharged from the seeding hole more smoothly. Since the baffle 106 is continuously rotating slowly, the baffle 106 will continuously block the seed holes and leak some of the seed holes. When blocked, the seeds cannot enter these seed holes, and the number of seeds in the seed holes will not increase. At the same time, the height sensor 5 in the mounting groove will move to the seed holes to detect the number of seeds in the seed holes. It should be noted that the expansion airbag 302 is still in a state of continuous contraction and expansion at this time, so there is a situation where the seed height changes at this time, so the intermediate value can be taken, that is, when the height sensor 5 is located above this seed hole, the internal data of the seed hole below is collected and transmitted to the chip, the data is recorded and the intermediate value is removed. When the requirements are met, the electronic valve 301 below the seed hole can be opened to discharge the seeds.

[0021] When the seeds in some of the seed holes have reached a suitable height, since the rotation direction of the baffle 106 is determined, they are about to be exposed to the outside world. The seed holes that are in contact with the outside seeds will be given priority to discharge the seeds. After a period of time, the remaining seed holes continue to discharge the seeds. If many seed holes have reached a suitable range and cannot be completely discharged at one time, they will continue to rotate and leave them for the next discharge. The density of sowing can be controlled by the number of seed holes discharged at one time, thereby achieving precision sowing.

[0022] Example 2: Reference Figure 1 , Figure 2 , Figure 4 A precision seeder for small-particle seeds is basically the same as Example 1, and further: a motor 103 is fixedly connected to the seeder housing 1, a rotating shaft is fixedly connected to the output end of the motor 103, and a stirring auger 104 is fixedly connected to the rotating shaft. The stirring auger 104 is used to stir the seeds in the seeder housing 1 to make the seeds flow and facilitate the seeds to enter the seeding hole of the seeding device 3. The stirring auger 104 is arranged in an inverted cone shape.

[0023] When the device is in use, the seeds to be sown are first poured into the seeder housing 1, and then the seeder housing 1 is connected to the transport equipment so that the seeder housing 1 can move at a constant speed in the area to be planted, and then the air pump 4 can be started, and the air pump 4 will continuously inject gas into the expansion airbag 302, but the amount of gas discharged by the pressure relief pipe 303 on the expansion airbag 302 is greater than the amount of gas injected into the expansion airbag 302 by the air pump 4. At this time, the expansion airbag 302 will continue to expand under the action of the pressure relief pipe 303, and then shrink, and this cycle will continue. When the expansion airbag 302 shrinks, the inner diameter of the seeding hole on the seeding device 3 is larger, and the seeds can fall into the expansion airbag 302 in a tilted manner, and then accumulate in the seeding hole. 302 is constantly expanding and contracting, and gas is constantly discharged outward through the pressure relief pipe 303. The gas can be directly discharged from the seed dispenser 3. If a special gas outlet port is opened at the bottom of the seed dispenser 3, the seeds will constantly change, and then the seeds above will fall into the gaps between the seeds below. Since the seeds will subsequently continue to change between the inclined and vertical states, this method can effectively prevent the seeds from getting stuck together. When the subsequent expansion airbag 302 is reduced, if the electronic valve 301 below is opened, the seeds can be discharged from the seed outlet hole more smoothly. At the same time, through the setting of the stirring auger 104, when sowing, the motor 103 is used to make the stirring auger 104 rotate slowly, and then the baffle 106 below is also rotated, which is convenient for the use of the equipment.

[0024] Example 3: Reference Figure 1-10 , a small-particle seed precision seeder, which is basically the same as Example 2, and further includes: a rotating connector 105 is connected to the end of the rotating shaft away from the motor 103, and the air inlet end of the rotating connector 105 is connected to the air outlet end of the air outlet pipe 401, and the rotating connector 105 is used to supply air to the expansion airbag 302 during rotation, and the baffle 106 is fixedly connected to the rotating connector 105, and a high-pressure nozzle 107 is fixedly connected in the mounting groove of the baffle 106, and the air inlet end of the high-pressure nozzle 107 is connected to the air outlet pipe 401, and the high-pressure nozzle 107 is used to inject high-pressure gas into the seed outlet hole where the seed height reaches the standard, so as to promote the rapid discharge of the seeds, and an arc-shaped wall 102 is arranged in the seeder housing 1, and a piston member is fixedly connected to the rotating shaft, and after the piston member contacts the arc-shaped wall 102, it will continuously discharge gas to the outside, and a plurality of groups of air outlets 1041 are arranged on the stirring auger 104, and the air outlets 1041 are connected to the air outlet end of the piston member.

[0025] Through the high-pressure nozzle 107, after the height sensor 5 senses the height verification, the high-pressure nozzle 107 can be used to open the electronic valve 301 in the seed outlet hole to quickly discharge the seeds inside. In order to facilitate the rapid discharge of the seeds, the expansion airbag 302 can be in a contracted state at this time, so that the seeds in the expansion airbag 302 will not be squeezed, that is, there are some gaps between the seeds, so that the seeds can be discharged more smoothly.

[0026] Example 4: Reference Figure 3 , Figure 4 , Figure 5 , a small-particle seed precision seeder, which is basically the same as Example 3, and further: the piston member includes a piston cylinder 201, a piston rod 202, and a spring member 203, the piston cylinder 201 is fixedly connected to the rotating shaft, the piston rod 202 is slidably connected in the piston cylinder 201, and one end of the piston rod 202 passes through the piston cylinder 201 and abuts against the arc wall 102, the two ends of the spring member 203 respectively abut against the piston cylinder 201 and the piston rod 202, and are used for resetting the piston rod 202, the piston cylinder 201 is provided with an air inlet and an exhaust pipe 204, the exhaust pipe 204 is communicated with the air outlet 1041, and a one-way valve is provided in the air inlet and the exhaust pipe 204.

[0027] When the piston rotates on the rotating shaft, it will continuously inhale the external gas, and then let the gas enter the inside of the stirring auger 104, so that the gas is continuously discharged through the air outlet 1041 of the stirring auger 104, thereby blowing the seeds inside the seeder shell 1 to make the seeds looser. At the same time, when the piston rotates on the rotating shaft, it will produce a certain amount of knocking vibration, so that the seeds can enter the seeding hole of the seed dispenser 3 more smoothly, which is convenient for the discharge of the seeds.

[0028] Example 5: Reference Figure 1-Figure 10 , which is basically the same as Example 4, and further includes: a method for using a small-particle seed precision seeder, comprising: a small-particle seed precision seeder, comprising the following operating steps: Step 1: Pour the seeds into the seeder housing 1, and start the motor 103 and the air pump 4 to rotate the baffle 106, while the inflatable airbag 302 continuously expands and then shrinks to prevent the seeds from getting stuck in the seeding hole; Step 2: Continuously sense the height of the seeds piled in the seed hole through the height sensor 5 until it reaches a suitable height; Step 3: Open the electronic valve 301 and spray high-pressure gas through the high-pressure nozzle 107 to quickly discharge the seeds from the seed hole, completing precision sowing, and then the seeds enter the seed hole again; Step 4: After sowing is completed, turn off the motor 103 and the air pump 4.

[0029] The present invention provides an expansion airbag 302 so that the inner diameter of the seed hole can be continuously changed, thereby allowing the seeds to continuously switch between a vertical state and an inclined state, effectively preventing the seeds from being laterally blocked in the seed hole. At the same time, the switching of the seeds between the inclined and vertical states will make the gaps between the seeds smaller, thereby making the number of seeds discharged from the seed hole as consistent as possible, thereby facilitating the use of precision seeding.

[0030] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A small-grain seed precision seeder, comprising a seeder housing (1), characterized in that: Also includes: A funnel shell (101) is fixedly connected inside the seeder housing (1), and a discharge port is provided at the bottom of the funnel shell (101); A seed dispenser (3) connected to the funnel shell (101), wherein the seed dispenser (3) is provided with a plurality of groups of seed dispensing holes in a ring shape, and the seed dispensing holes are used to discharge the seeds in the funnel shell (101); An electronic valve (301) is mounted on the discharging end of the seed discharging hole of the seed discharging device (3); An expansion air bag (302) connected to the seed outlet hole of the seed outlet device (3), wherein the expansion air bag (302) will reduce the inner diameter of the seed outlet hole after expansion; A pressure relief pipe (303) connected to the expansion airbag (302), a control valve being arranged in the pressure relief pipe (303), and the pressure relief pipe (303) is used to discharge the gas in the expansion airbag (302); An air pump (4) is fixedly connected in the seed drill housing (1); an air outlet pipe (401) is connected to the air outlet end of the air pump (4); a plurality of connecting pipes (402) are connected to the air outlet end of the air outlet pipe (401); a control valve is arranged in the connecting pipe (402); the connecting pipe (402) is connected to the expansion air bag (302) and is used to supply air to the expansion air bag (302); The baffle (106) is rotatably connected to the seed dispenser (3). The baffle (106) is provided with a plurality of mounting grooves, and a height sensor (5) is connected in the mounting groove. When the baffle (106) rotates, the baffle (106) moves above a portion of the seed dispensing hole, thereby blocking the seeds in the funnel shell (101) from continuing to enter the blocked seed dispensing hole. At the same time, the baffle (106) moves the height sensor (5) above the seed dispensing hole, and senses the height of the seeds in the seed dispensing hole through the height sensor (5). When the height reaches the required height, the electronic valve (301) in the seed dispensing hole is opened to discharge the seeds accumulated in the seed dispensing hole, thereby completing the sowing.

2. A small-particle seed precision seeder according to claim 1, characterized in that: A motor (103) is fixedly connected to the seeder housing (1), a rotating shaft is fixedly connected to the output end of the motor (103), and a stirring auger (104) is fixedly connected to the rotating shaft. The stirring auger (104) is used to stir the seeds in the seeder housing (1) to make the seeds flow and facilitate the seeds to enter the seeding hole of the seeding device (3).

3. A small-particle seed precision seeder according to claim 2, characterized in that: The stirring auger (104) is arranged in an inverted cone shape.

4. The small-particle seed precision seeder according to claim 3, characterized in that: A rotating connector (105) is connected to one end of the rotating shaft away from the motor (103); an air inlet end of the rotating connector (105) is connected to an air outlet end of an air outlet pipe (401); and the rotating connector (105) is used to supply air to the expansion airbag (302) during rotation.

5. The small-grain seed precision seeder according to claim 4, characterized in that: The baffle (106) is fixedly connected to the rotating connector (105).

6. The small-grain seed precision seeder according to claim 4, characterized in that: A high-pressure nozzle (107) is fixedly connected in the mounting groove of the baffle (106); an air inlet end of the high-pressure nozzle (107) is connected to an air outlet pipe (401); the high-pressure nozzle (107) is used to inject high-pressure gas into a seed outlet hole where the seed height reaches the standard, so as to promote rapid discharge of the seeds.

7. The small-grain seed precision seeder according to claim 2, characterized in that: An arc-shaped wall (102) is provided inside the seeder housing (1), a piston member is fixedly connected to the rotating shaft, and after the piston member contacts the arc-shaped wall (102), gas is continuously discharged to the outside, and a plurality of gas outlets (1041) are provided on the stirring auger (104), and the gas outlets (1041) are connected to the gas outlet end of the piston member.

8. The small-grain seed precision seeder according to claim 7, characterized in that: The piston member comprises a piston cylinder (201), a piston rod (202), and a spring member (203); the piston cylinder (201) is fixedly connected to the rotating shaft; the piston rod (202) is slidably connected in the piston cylinder (201); one end of the piston rod (202) passes through the piston cylinder (201) and abuts against the arc-shaped wall (102); two ends of the spring member (203) respectively abut against the piston cylinder (201) and the piston rod (202) and are used for resetting the piston rod (202); an air inlet and an exhaust pipe (204) are provided on the piston cylinder (201); the exhaust pipe (204) is communicated with the air outlet (1041).

9. The small-grain seed precision seeder according to claim 8, characterized in that: Both the air inlet and the exhaust pipe (204) are provided with a one-way valve.

10. A method for using a small-particle seed precision seeder, comprising the small-particle seed precision seeder according to claim 6, characterized in that: The steps include: Step 1: Pour the seeds into the seeder housing (1), and start the motor (103) and the air pump (4) to rotate the baffle (106), while the inflatable airbag (302) continuously expands and then shrinks to prevent the seeds from getting stuck in the seed outlet hole; Step 2: Continuously sense the height of the seeds piled in the seed hole by using a height sensor (5) until a suitable height is reached; Step 3: Open the electronic valve (301) and spray high-pressure gas through the high-pressure nozzle (107), so that the seeds are quickly discharged from the seed hole, and precision sowing is completed, and then the seeds enter the seed hole again; Step 4: After sowing is completed, turn off the motor (103) and the air pump (4).

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