Liquid flow jet seeding device of seeding machine

Abstract

The invention discloses a liquid flow jet seeding device of a seeding machine, which comprises a single body support, a four-connecting-rod profiling mechanism, a seed box, a seed metering device, a seed guide pipe, a double-disc furrow opener, an earthing press wheel, a liquid flow jet seeding device for enabling seeds to be stably implanted and a drip irrigation device after earthing, and the four-connecting-rod profiling mechanism is hinged with the front end of the single body support; the seed box is in fastening connection with a seed inlet of the seed-metering device, the single auxiliary support is in fastening connection with the side face of the joint of the seed box and the seed-metering device, the water tank is arranged on the single auxiliary support, the seed guide pipe is in fastening connection with a seed outlet of the seed-metering device, and the double-disc furrow opener is rotationally connected with the lower end of the single support. The soil covering press wheel is rotationally connected with the rear part of the lower end of the single bracket; the liquid flow jet seeding device is connected with the single auxiliary bracket; according to the invention, stable implantation of the seeds and uniform distribution of the seeds in seed ditches are realized, the sowing uniformity and the budding rate are improved, the production efficiency is improved, and the problem of spatial ectopic distribution of the seed soil caused by lack of seed transient degree-of-freedom constraint regulation of seed implantation is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and in particular to a liquid flow spraying device of a seeding machine. Background Art

[0002] In the current seeder, when the seeds slide down the seed guide tube and touch the soil during the sowing process, they are prone to bounce and roll out of position, resulting in uneven distribution of seeds in the seed furrow after sowing. In addition, different requirements are put forward for the water spraying form of the liquid jet sowing device for large-grain seeds such as peanuts, soybeans, and corn and small-grain seeding seeds such as rice, wheat, and sesame. How to design a liquid jet sowing device for a seeder is a technical problem that needs to be solved at present. Summary of the invention

[0003] The present invention provides a liquid flow spraying device for a seeder to solve the problems existing in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a liquid flow broadcasting device of a seeder, comprising a single body support, a four-bar profiling mechanism, a seed box, a seeding device, a seed guide pipe, a double-disc furrow opener, a soil covering and pressing wheel, a liquid flow broadcasting device for stably implanting seeds, and a drip irrigation device after soil covering, wherein the four-bar profiling mechanism is hinged to the front end of the single body support, the seed box is firmly connected to the seed inlet of the seeding device, the side of the connection between the seed box and the seeding device is firmly connected to the single body sub-support, a water tank is arranged on the single body sub-support, the seed guide pipe is firmly connected to the seed outlet of the seeding device, the double-disc furrow opener is rotatably connected to the lower end of the single body support, the soil covering and pressing wheel is rotatably connected to the rear of the lower end of the single body support, and the liquid flow broadcasting device is connected to the single body sub-support;

[0005] The four-link contouring mechanism includes a front connecting plate, an upper connecting rod, a lower connecting rod and a rear connecting plate. The front connecting plate is hinged to the front end of the single-body bracket, one end of the upper connecting rod is hinged to the upper end of the front connecting plate, and the other end is hinged to the upper end of the rear connecting plate, one end of the lower connecting rod is hinged to the lower end of the front connecting plate, and the other end is hinged to the lower end of the rear connecting plate.

[0006] Preferably, depth limiting wheels are rotatably provided on both sides of the double-disc furrow opener.

[0007] Preferably, the liquid flow broadcasting device includes a water pump, a stainless steel bellows, a normally closed micro solenoid valve and a jet nozzle, the water pump is tightly connected to the monomer sub-bracket, the water inlet of the water pump is connected to the water tank, the water outlet of the water pump is connected to the upper end of the stainless steel bellows, the normally closed micro solenoid valve is connected to the lower end of the stainless steel bellows, the jet nozzle is connected to the water outlet of the normally closed micro solenoid valve, the normally closed micro solenoid valve is tightly connected to the seed guide tube, and the liquid flow sprayed by the jet nozzle can entrain the seed particles.

[0008] Preferably, the drip irrigation device comprises two water pumps, two stainless steel bellows, two normally closed micro solenoid valves and a hose, the two water pumps are tightly connected to the single body auxiliary bracket, the water inlet of the two water pumps is communicated with the water tank, the water outlet of the two water pumps is connected to the upper end of the two stainless steel bellows, the two normally closed micro solenoid valves are connected to the lower end of the two stainless steel bellows, the hose is connected to the water outlet of the two normally closed micro solenoid valves, and the hose is arranged above the rear end of the soil covering and pressing wheel.

[0009] Preferably, the jet nozzle is provided with a central water spray hole and surrounding water spray holes.

[0010] Preferably, the water pressure value of water pump one and water pump two is 1.8Mpa DC24V; the diameter of stainless steel bellows one and stainless steel bellows two is 50mm; the water pressure value of normally closed micro solenoid valve one and normally closed micro solenoid valve two is 0.5Mpa DC24V.

[0011] A liquid flow broadcasting device for a seeding machine also includes a control system, the control system includes an infrared counter-radiation sensor and a circuit control box, the infrared counter-radiation sensor is installed on the hole grooves on both sides of the seed guide tube, the circuit control box is arranged above the soil covering and pressing wheel, and is tightly connected to the single bracket; the circuit control box is composed of an Arduino Nano v3.0 unit, a DC-DC adjustable step-down and voltage-stabilized power supply unit, a MOS amplification drive unit, a two-way relay, and a seed detector unit; the infrared counter-radiation sensor detects the seed particles at the front end of the seed guide tube, and converts the detection signal into an electrical signal and transmits it to the circuit control box, triggering the seed detector unit, and the signal is transmitted to the Arduino Nano v3.0 unit, and then the MOS amplification drive unit transmits the signal to the two-way relay to control a normally closed micro solenoid valve 1, the normally closed micro solenoid valve 1 receives the signal and opens, the jet nozzle completes the liquid flow broadcasting work, and then the normally closed micro solenoid valve 2 delays the injection of liquid flow.

[0012] Preferably, the infrared counter-radiation sensor adopts a LSD-DT15MLD counter-radiation light-sensitive infrared detector with a detection diameter of 500 mm.

[0013] The beneficial effects of adopting the above technical solution are:

[0014] 1. The liquid flow broadcasting device of the seeder of the present invention, when the seeds pass through the seed guide tube, the infrared radiation sensor transmits the signal to the circuit control box, triggering the seed detector unit, and the MOS amplification drive unit transmits the signal to the normally closed micro solenoid valve 1. When the water pump 1 is normally open, the normally closed micro solenoid valve 1 receives the signal and opens, and the jet nozzle completes the liquid flow broadcasting work. The liquid flow broadcasting device "entrains, accelerates, and adheres" the seeds to the soil through high-pressure pulse water jets, and projects and adheres the seeds to the seed furrow; suppresses the bouncing and rolling ectopic behavior of the seeds after they are implanted and touch the soil, realizes the stable implantation of the seeds and the uniform distribution of the seeds in the seed furrow, improves the uniformity of sowing and the germination and emergence rate, improves the production efficiency, and solves the problem of ectopic distribution of seeds in the soil space caused by the lack of constraint and regulation of the transient freedom of seeds in the implantation of seeds in traditional seeders.

[0015] 2. The liquid flow seeding device of the seeder of the present invention, after the soil covering and pressing wheel completes the soil covering work, when the water pump 1 is in the normally open state, the circuit control box controls the normally closed micro solenoid valve 2 to receive the delayed signal of several seconds and open, and the hose completes the drip irrigation work, realizing the work of furrowing - seeding - seeding - soil covering - pressing - drip irrigation, saving costs, and improving the efficiency of seeding operations and the yield of crops.

[0016] 3. The liquid flow broadcasting device of the seed drill of the present invention, the control system includes an infrared counter-radiation sensor and a circuit control box, the infrared counter-radiation sensor is installed on the hole grooves on both sides of the seed guide tube, the circuit control box is arranged above the soil covering and pressing wheel, and is fastened to the single bracket; the circuit control box is composed of an Arduino Nano v3.0 unit, a DC-DC adjustable step-down voltage-stabilized power supply unit, a MOS amplification drive unit, a dual-channel relay, and a seed detector unit; the infrared counter-radiation sensor detects the seeds at the front end of the seed guide tube, and converts the detection signal into an electrical signal and transmits it to the circuit control box, triggering the seed detector unit, and the signal is transmitted to the Arduino Nano v3.0 unit, and then the MOS amplification drive unit transmits the signal to the dual-channel relay to control the normally closed micro solenoid valve 1, the normally closed micro solenoid valve 1 receives the signal and opens, the jet nozzle completes the liquid flow broadcasting work, and then the normally closed micro solenoid valve 2 delays the spraying of the liquid flow; the liquid flow broadcasting device and the drip irrigation device complete the one-hole-one-spray intermittent operation effect, realize accurate watering or fertilization, save water resources, improve efficiency, rush to harvest and plant, and improve the germination and emergence rate of seeds.

[0017] 4. The liquid flow broadcasting device of the seeding machine of the present invention has depth limiting wheels rotating on both sides of the double-disc furrow opener to ensure the uniformity of the furrowing depth of the double-disc furrow opener, thereby ensuring the high uniformity of germination and emergence. The jet nozzle is provided with a central water spray hole and surrounding water spray holes. When sowing large-grain seeds such as peanuts, soybeans, and corn, the central water spray hole is used to discharge columnar water; when sowing small-grain seeds such as rice, wheat, and sesame, the surrounding water spray holes are used to discharge shower-like water; it ensures broadcasting according to the hole formation requirements of seeds of different sizes and quantities, realizes multi-purpose use of one machine, and improves the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an assembly diagram of the liquid flow spraying device of the seeding machine of the present invention;

[0019] Figure 2 is a schematic diagram of the jet nozzle structure;

[0020] Figure 3 It is a schematic diagram of the control principle of the circuit control box;

[0021] in:

[0022] 1. Single bracket; 2. Four-link profiling mechanism; 3. Seed box; 4. Seed discharger; 5. Seed guide tube; 6. Double-disc furrow opener; 7. Soil covering and pressing wheel; 8. Liquid flow seeding device; 9. Drip irrigation device;

[0023] 1-1, infrared radiation sensor; 1-2, circuit control box;

[0024] 20. front connecting plate; 21. upper connecting rod; 22. lower connecting rod; 23. rear connecting plate;

[0025] 30. Single-body auxiliary bracket; 31. Water tank;

[0026] 60. Depth limiting wheel;

[0027] 80. A water pump; 81. A stainless steel bellows; 82. A normally closed micro solenoid valve; 83. A jet nozzle; 83-1. A central water spray hole; 83-2. Water spray holes around the periphery;

[0028] 90. Two water pumps; 91. Two stainless steel bellows; 92. Two normally closed micro solenoid valves; 93. Rubber hose. DETAILED DESCRIPTION

[0029] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0030] like Figures 1 to 3As shown, the present invention is a liquid jet sowing device for a seeder, which "entrains - accelerates - adheres" the seeds into the soil by shooting high-pressure pulsed water jets, and projects and adheres the seeds into the seed furrow; suppresses the bouncing, rolling and ectopic behavior of the seeds after they are implanted and touch the soil, achieves stable implantation of the seeds and uniform distribution of the seeds in the seed furrow, improves sowing uniformity and germination and seedling emergence rates, improves production efficiency, and solves the problem of spatial ectopic distribution of seeds in the soil caused by the lack of constraint and regulation of the transient freedom of seeds in the implantation of seeds in traditional seeders.

[0031] Specifically, Figures 1 to 3 As shown, a liquid flow broadcasting device of a seeder comprises a single body support 1, a four-link profiling mechanism 2, a seed box 3, a seed metering device 4, a seed guide tube 5, a double-disc furrow opener 6, a soil covering and pressing wheel 7, a liquid flow broadcasting device 8 for making seeds implanted stably, and a drip irrigation device 9 after soil covering, wherein the four-link profiling mechanism 2 is hinged to the front end of the single body support 1, the seed box 3 is firmly connected to the seed inlet of the seed metering device 4, the side of the connection between the seed box 3 and the seed metering device 4 is firmly connected to the single body sub-support, a water tank is provided on the single body sub-support, the seed guide tube 5 is firmly connected to the seed outlet of the seed metering device 4, the double-disc furrow opener 6 is rotatably connected to the lower end of the single body support 1, the soil covering and pressing wheel 7 is rotatably connected to the rear of the lower end of the single body support 1, and the liquid flow broadcasting device 8 is connected to the single body sub-support;

[0032] The four-link profiling mechanism 2 includes a front connecting plate 20, an upper connecting rod 21, a lower connecting rod 22 and a rear connecting plate 23. The front connecting plate 20 is hinged to the front end of the single-body bracket 1, one end of the upper connecting rod 21 is hinged to the upper end of the front connecting plate 20, and the other end is hinged to the upper end of the rear connecting plate 23, one end of the lower connecting rod 22 is hinged to the lower end of the front connecting plate 20, and the other end is hinged to the lower end of the rear connecting plate 23.

[0033] Depth-limiting wheels 60 are rotatably provided on both sides of the double-disc furrow opener 6.

[0034] The liquid flow broadcasting device 8 includes a water pump 80, a stainless steel bellows 81, a normally closed micro solenoid valve 82 and a jet nozzle 83. The water pump 80 is tightly connected to the monomer auxiliary bracket, the water inlet of the water pump 80 is connected to the water tank, the water outlet of the water pump 80 is connected to the upper end of the stainless steel bellows 81, the normally closed micro solenoid valve 82 is connected to the lower end of the stainless steel bellows 81, the jet nozzle 83 is connected to the water outlet of the normally closed micro solenoid valve 82, the normally closed micro solenoid valve 82 is tightly connected to the seed guide tube 5, and the liquid flow sprayed by the jet nozzle 83 can entrain the seed particles.

[0035] The drip irrigation device 9 includes a water pump 90, a stainless steel bellows 91, a normally closed micro solenoid valve 92 and a hose 93. The water pump 90 is tightly connected to the single auxiliary bracket. The water inlet of the water pump 90 is connected to the water tank. The water outlet of the water pump 90 is connected to the upper end of the stainless steel bellows 91. The normally closed micro solenoid valve 92 is connected to the lower end of the stainless steel bellows 91. The hose 93 is connected to the water outlet of the normally closed micro solenoid valve 92. The hose 93 is arranged above the rear end of the soil covering and pressing wheel 7.

[0036] The jet nozzle 83 is provided with a central water spray hole 83 - 1 and peripheral water spray holes 83 - 2 .

[0037] The water pressure value of the water pump 1 80 and the water pump 2 90 is 1.8Mpa DC24V; the diameter of the stainless steel bellows 1 81 and the stainless steel bellows 2 91 is 50mm; the water pressure value of the normally closed micro solenoid valve 1 82 and the normally closed micro solenoid valve 2 92 is 0.5Mpa DC24V.

[0038] A liquid flow broadcasting device for a seeding machine also includes a control system, the control system includes an infrared counter-radiation sensor 1-1 and a circuit control box 1-2, the infrared counter-radiation sensor 1-1 is installed on the hole grooves on both sides of the seed guide tube 5, the circuit control box 1-2 is arranged above the soil covering and pressing wheel 7, and is tightly connected to the single bracket 1; the circuit control box 1-2 is composed of an Arduino Nanov3.0 unit, a DC-DC adjustable step-down and voltage-stabilized power supply unit, a MOS amplification drive unit, a two-way relay, and a seed detector unit; the infrared counter-radiation sensor 1-1 detects the seeds at the front end of the seed guide tube 5, and converts the detection signal into an electrical signal and transmits it to the circuit control box 1-2, triggering the seed detector unit, and the signal is transmitted to the Arduino Nano v3.0 unit, and then the MOS amplification drive unit transmits the signal to the two-way relay to control the normally closed micro solenoid valve 1 82, the normally closed micro solenoid valve 1 82 receives the signal and opens, the jet nozzle 83 completes the liquid flow broadcasting work, and then the normally closed micro solenoid valve 2 92 delays the injection of liquid flow.

[0039] The infrared counter-radiation sensor 1-1 adopts a LSD-DT15MLD counter-radiation light-sensitive infrared detector with a detection diameter of 500mm.

[0040] The specific working method is described below with specific embodiments:

[0041] Embodiment 1:

[0042] In the liquid flow broadcasting device of the seeder of the present invention, when the seeds pass through the seed guide tube 5, the infrared radiation sensor 1-1 transmits the signal to the circuit control box 1-2, triggering the seed detector unit, and the MOS amplification drive unit transmits the signal to the normally closed micro solenoid valve 82. When the water pump 80 is normally open, the normally closed micro solenoid valve 82 receives the signal and opens, and the jet nozzle 83 completes the liquid flow broadcasting. The liquid flow broadcasting device 8 "entrains, accelerates, and adheres" the seeds to the soil through high-pressure pulse water jets, and projects and adheres the seeds to the seed furrow; suppresses the bouncing and rolling ectopic behavior of the seeds after they are implanted and touch the soil, realizes the stable implantation of the seeds and the uniform distribution of the seeds in the seed furrow, improves the uniformity of sowing and the germination and emergence rate, improves the production efficiency, and solves the problem of ectopic distribution of seeds in the soil space caused by the lack of constraint and regulation on the transient degree of freedom of seeds in the implantation of seeds in traditional seeders.

[0043] Embodiment 2:

[0044] On the basis of Example 1, after the soil covering and pressing wheel 7 completes the soil covering work, when the water pump 2 90 is in the normally open state, the circuit control box 1-2 controls the normally closed micro solenoid valve 2 92 to receive the delayed signal of several seconds and open, and the hose 93 completes the drip irrigation work, realizing the work of trenching - seeding - directional sowing - soil covering - pressing - drip irrigation, saving costs, and improving the efficiency of sowing operations and the yield of crops.

[0045] Embodiment 3:

[0046] The liquid jet sowing device of the seeding machine of the present invention comprises a control system comprising an infrared beamforming sensor 1-1 and a circuit control box 1-2, wherein the infrared beamforming sensor 1-1 is installed on the hole grooves on both sides of the seed guide tube 5, and the circuit control box 1-2 is arranged above the soil covering and pressing wheel 7 and is tightly connected to the single bracket 1; the circuit control box 1-2 is composed of an Arduino Nano v3.0 unit, a DC-DC adjustable step-down regulated power supply unit, a MOS amplification drive unit, a dual-channel relay, and a seed detector unit; the infrared beamforming sensor 1-1 detects the seed grains at the front end of the seed guide tube (5), and converts the detection signal into an electrical signal and transmits it to the circuit control box 1-2, triggering the seed detector unit, and the signal is input into the Arduino Nano v3.0 unit. v3.0 unit, and then the MOS amplifier drive unit transmits the signal to the dual-channel relay to control the normally closed micro solenoid valve 82, the normally closed micro solenoid valve 82 receives the signal and opens, the jet nozzle 83 completes the liquid flow broadcasting work, and then the normally closed micro solenoid valve 92 delays the injection of liquid flow; the liquid flow broadcasting device 8 and the drip irrigation device 9 complete the one-hole-one-spray intermittent operation effect, realize precise watering or fertilization, save water resources, improve efficiency of rushing to harvest and plant, and improve the germination and emergence rate of seeds.

[0047] Embodiment 4:

[0048] On the basis of Example 1, the double-disc furrow opener 6 is provided with depth-limiting wheels 60 for rotation on both sides to ensure the uniformity of the furrowing depth of the double-disc furrow opener 6, thereby ensuring the high uniformity of germination and emergence. The jet nozzle 83 is provided with a central water spray hole 83-1 and surrounding water spray holes 83-2. When large-grained seeds such as peanuts, soybeans, and corn are sown, the central water spray hole 83-1 is used to discharge columnar water; when small-grained seeds such as rice, wheat, and sesame are sown in holes, the surrounding water spray holes 83-2 are used to discharge shower-like water; it ensures the injection sowing for the hole formation requirements of seeds of different sizes and quantities, realizes multi-purpose of one machine, and improves the versatility of the equipment.

[0049] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above-mentioned concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A liquid jet sowing device for a seeder, characterized in that: The invention comprises a single-body support (1), a four-link profiling mechanism (2), a seed box (3), a seed metering device (4), a seed guide tube (5), a double-disk furrow opener (6), a soil covering and suppressing wheel (7), a liquid flow broadcasting device (8) for ensuring stable seed implantation, and a drip irrigation device (9) after soil covering. The four-link profiling mechanism (2) is hinged to the front end of the single-body support (1), the seed box (3) is tightly connected to the seed inlet of the seed metering device (4), the side of the connection between the seed box (3) and the seed metering device (4) is tightly connected to the single-body auxiliary support, a water tank is provided on the single-body auxiliary support, the seed guide tube (5) is tightly connected to the seed outlet of the seed metering device (4), the double-disk furrow opener (6) is rotatably connected to the lower end of the single-body support (1), the soil covering and suppressing wheel (7) is rotatably connected to the rear of the lower end of the single-body support (1), and the liquid flow broadcasting device (8) is connected to the single-body auxiliary support; The four-link profiling mechanism (2) comprises a front connecting plate (20), an upper connecting rod (21), a lower connecting rod (22) and a rear connecting plate (23); the front connecting plate (20) is hinged to the front end of the single-body bracket (1); one end of the upper connecting rod (21) is hinged to the upper end of the front connecting plate (20), and the other end is hinged to the upper end of the rear connecting plate (23); one end of the lower connecting rod (22) is hinged to the lower end of the front connecting plate (20), and the other end is hinged to the lower end of the rear connecting plate (23).

2. A liquid jet sowing device for a seeder according to claim 1, characterized in that: Depth-limiting wheels (60) are rotatably provided on both sides of the double-disc furrow opener (6).

3. A liquid jet sowing device for a seeder according to claim 1, characterized in that: The liquid flow broadcasting device (8) comprises a water pump (80), a stainless steel bellows (81), a normally closed micro solenoid valve (82) and a jet nozzle (83); the water pump (80) is tightly connected to the single body auxiliary bracket; the water inlet of the water pump (80) is connected to the water tank; the water outlet of the water pump (80) is connected to the upper end of the stainless steel bellows (81); the normally closed micro solenoid valve (82) is connected to the lower end of the stainless steel bellows (81); the jet nozzle (83) is connected to the water outlet of the normally closed micro solenoid valve (82); the normally closed micro solenoid valve (82) is tightly connected to the seed guide tube (5), and the liquid flow sprayed by the jet nozzle (83) can entrain the seed particles.

4. A liquid jet sowing device for a seeder according to claim 3, characterized in that: The drip irrigation device (9) comprises a water pump (90), a stainless steel bellows (91), a normally closed micro solenoid valve (92) and a rubber hose (93). The water pump (90) is tightly connected to the single auxiliary bracket. The water inlet of the water pump (90) is connected to the water tank. The water outlet of the water pump (90) is connected to the upper end of the stainless steel bellows (91). The normally closed micro solenoid valve (92) is connected to the lower end of the stainless steel bellows (91). The rubber hose (93) is connected to the water outlet of the normally closed micro solenoid valve (92). The rubber hose (93) is arranged above the rear end of the soil covering and pressing wheel (7).

5. The liquid jet sowing device of a seeder according to claim 3, characterized in that: The jet nozzle (83) is provided with a central water spray hole (83-1) and peripheral water spray holes (83-2).

6. A liquid jet sowing device for a seeder according to claim 4, characterized in that: The water pressure value of the water pump 1 (80) and the water pump 2 (90) is 1.8Mpa DC24V; the diameter of the stainless steel bellows 1 (81) and the stainless steel bellows 2 (91) is 50mm; the water pressure value of the normally closed micro solenoid valve 1 (82) and the normally closed micro solenoid valve 2 (92) is 0.5Mpa DC24V.

7. A liquid jet sowing device for a seeder according to claim 4, characterized in that: The invention also comprises a control system, wherein the control system comprises an infrared counter-radiation sensor (1-1) and a circuit control box (1-2); the infrared counter-radiation sensor (1-1) is installed on the hole grooves on both sides of the seed guide tube (5); the circuit control box (1-2) is arranged above the soil covering and pressing wheel (7) and is tightly connected to the single bracket (1); the circuit control box (1-2) is composed of an Arduino Nano v3.0 unit, a DC-DC adjustable step-down voltage-stabilized power supply unit, a MOS amplification drive unit, a dual-channel relay, and a seed detector unit; the infrared counter-radiation sensor (1-1) detects the seed grains at the front end of the seed guide tube (5), and converts the detection signal into an electrical signal and transmits it to the circuit control box (1-2), triggering the seed detector unit, and the signal is input into the Arduino Nano v3.0 unit. v3.0 unit, and then the MOS amplifier drive unit transmits the signal to the dual-channel relay to control the normally closed micro solenoid valve one (82), the normally closed micro solenoid valve one (82) receives the signal and opens, the jet nozzle (83) completes the liquid flow spraying work, and then the normally closed micro solenoid valve two (92) delays the injection of liquid flow.

8. A liquid jet sowing device for a seeder according to claim 7, characterized in that: The infrared counter-radiation sensor (1-1) adopts an LSD-DT15MLD counter-radiation light-sensitive infrared detector with a detection diameter of 500 mm.

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