A drone with liquid medicine spraying and application function and use method thereof

Abstract

The present application discloses a drone with a function of spraying liquid medicine and a method of using the drone, which belongs to the technical field of drones. The drone with the function of spraying liquid medicine includes a drone body, a spraying device is provided at the bottom of the drone body, the spraying device includes a liquid medicine tank fixed at the bottom of the drone body, a spraying assembly is provided at the bottom of the liquid medicine tank, and a pressurizing assembly and a dosing assembly are provided on the liquid medicine tank; the pressurizing assembly includes a pressurizing box fixed in the liquid medicine tank, a piston block provided in the pressurizing box, an air pump fixed outside the liquid medicine tank, a pressurizing pipe connected between the air pump and the top of the pressurizing box, and a liquid supply part for pumping the liquid medicine in the liquid medicine tank to the pressurizing box, the spraying assembly is connected to the bottom of the pressurizing box in the liquid medicine tank; the piston block is slidably connected to the inner wall of the pressurizing box and sealed. The present application has the effect of uniform spraying.

Description

Technical Field

[0001] The present application relates to the technical field of unmanned aerial vehicles, and more specifically, to an unmanned aerial vehicle with a function of spraying liquid medicine and a method of using the unmanned aerial vehicle. Background Art

[0002] Quadcopters are also called quadrotors or quadcopters, or quadcopters for short. The four propellers of a quadcopter are directly connected to the motor. The cross-shaped layout allows the aircraft to obtain the force to rotate the fuselage by changing the motor speed, thereby adjusting its own posture. With the popularization of drones, quadcopters are increasingly being used in the agricultural and forestry industries.

[0003] For example, a Chinese invention patent with the announcement number CN112429239A discloses a pesticide liquid spraying drone and a method thereof. The pesticide liquid spraying drone comprises: a drone body; a box, the top of which is fixed to the bottom of the drone body; and a fixed plate, the two sides of which are respectively fixed to the two sides of the inner wall of the box. The pesticide liquid spraying drone and the method thereof provided by the present invention can discharge the water source and the agent liquid inside the two liquid storage tanks into the inside of the liquid tank through the setting of the feeding assembly, and can stir the water source and the agent with the rotation of the stirring shaft to prepare the liquid. The bottoms of both sides of the inner wall of the box are slidably connected with telescopic plates, and the driving plates are fixedly connected between the opposite sides of the two telescopic plates. The bottoms of the driving plates are provided with liquid spray heads, and the tops of the liquid spray heads are connected with telescopic hoses. The liquid suction ports of the two water pumps are connected to the inside of the liquid tank through the liquid suction tube, and the liquid outlets of the two water pumps are connected to the other end of the telescopic hose through the liquid outlet pipe.

[0004] The drone sprays the liquid medicine in the box through the spray head. However, as the liquid medicine in the box decreases, the water pressure of the liquid medicine in the box decreases, which will reduce the spraying range of the spray head, making the spraying of the liquid medicine uneven and affecting the absorption of the plants.

[0005] In view of the problems existing in the prior art, the present invention provides a drone with a function of spraying liquid medicine and a method of using the drone. Summary of the invention

[0006] In order to solve the above problems, the present application provides a drone with the function of spraying liquid medicine and a method of use.

[0007] The present application provides a drone with a function of spraying liquid medicine and a method of using the drone, which adopts the following technical solutions:

[0008] A drone with a function of spraying liquid medicine, comprising a drone body, a spraying device at the bottom of the drone body, the spraying device comprising a liquid medicine tank fixed to the bottom of the drone body, a spraying assembly at the bottom of the liquid medicine tank, and a pressurizing assembly and a dosing assembly on the liquid medicine tank; the pressurizing assembly comprises a pressurizing box fixed in the liquid medicine tank, a piston block arranged in the pressurizing box, an air pump fixed outside the liquid medicine tank, a pressurizing pipe connected between the air pump and the top of the pressurizing box, and a liquid supply part for pumping the liquid medicine in the liquid medicine tank to the pressurizing box, the spraying assembly is connected to the bottom of the pressurizing box in the liquid medicine tank; the piston block is slidably connected to the inner wall of the pressurizing box and sealed.

[0009] Through the above technical solution, before the UAV takes off, the operator fills the liquid medicine tank with liquid medicine through the dosing component, and then the operator takes off the UAV body to the spraying area. At the same time, the liquid supply unit pumps the liquid medicine in the liquid medicine tank into the pressurized box, and then the air pump pumps air into the pressurized box, so that the piston block moves downward, pushing the liquid medicine in the pressurized box to be sprayed out through the spraying component. Therefore, compared with the spraying method in which the amount of medicine is continuously reduced, the amount of medicine sprayed by the UAV each time is more uniform, which is conducive to the full absorption of the plants.

[0010] Furthermore, the liquid supply part includes a liquid supply pump fixed outside the medicine liquid box, and the liquid supply pump is connected to a first infusion tube and a second infusion tube. The first infusion tube is connected to the bottom of the medicine liquid box, and the second infusion tube penetrates into the medicine liquid box from the top of the medicine liquid box and is connected to the bottom of the pressurized box.

[0011] Through the above technical solution, when the liquid supply pump is started, the liquid in the liquid medicine box is continuously transported to the pressurized box through the first infusion tube and the second infusion tube in turn, so that sufficient liquid medicine can be continuously delivered to the pressurized box, making the spraying of the liquid medicine more uniform.

[0012] Furthermore, the liquid supply part is a liquid supply pipe, one end of which is connected to the bottom of the liquid medicine box, and the other end of which passes through the top of the liquid medicine box and is connected to the bottom of the pressurizing box.

[0013] Through the above technical solution, when the air pump inhales air, negative pressure is generated on the upper part of the piston block in the pressurizing box, so that the piston block moves upward, and negative pressure is also formed on the lower part of the piston block, so that the medicine in the medicine tank is sucked into the pressurizing box through the liquid supply pipe to complete the liquid supply.

[0014] Furthermore, the piston block is cup-shaped, and a plurality of annular sealing grooves are provided on the outer wall of the piston block, and sealing rings are fixed in the annular sealing grooves; the outer wall of the piston block is slidably matched with the inner wall of the pressurizing box, and the sealing ring is against the inner wall of the pressurizing box.

[0015] Through the above technical solution, the sealing ring on the piston block is arranged so that the piston block can be movably sealed with the inner wall of the pressurizing box to prevent leakage of the liquid medicine.

[0016] Furthermore, the drug adding component includes a drug injection port connected to the first infusion tube, and a solenoid valve is provided on the drug injection port.

[0017] Through the above technical solution, the operator opens the solenoid valve and then adds liquid medicine into the liquid medicine tank through the injection port and the first infusion tube, which is convenient and quick.

[0018] Furthermore, the drug adding component includes a drug injection port connected to the liquid supply pipe, and a solenoid valve is provided on the drug injection port.

[0019] Through the above technical solution, the operator opens the solenoid valve and then adds liquid medicine into the liquid medicine tank through the injection port and the liquid supply pipe.

[0020] Furthermore, the spray assembly includes a medicine tube fixed on the bottom surface of the medicine liquid tank, a liquid separation plate arranged at the lower end of the medicine tube, and a liquid pressure ring sheet mounted on the medicine tube, the upper end of the medicine tube is connected to the pressurizing box in the medicine liquid tank; a liquid outlet head is connected between the liquid separation plate and the lower end of the medicine tube; the liquid pressure ring sheet is made of copper sheet, the inner edge of the liquid pressure ring sheet is fixedly connected to the outer wall of the medicine tube, and the outer edge of the liquid pressure ring sheet is bent downward; the edge of the liquid separation plate is bent upward, and the vertical projection of the liquid pressure ring sheet covers the vertical projection of the liquid separation plate.

[0021] Through the above technical solution, when the medicine liquid is pushed into the medicine tube by the piston block, the high-pressure medicine liquid is sprayed to the liquid separation plate through the liquid outlet head, and then impacts the liquid pressure ring and then sprayed out. Therefore, the medicine liquid sprayed through multiple impacts is more easily atomized in the air, forming a medicine liquid that is evenly attached to the plants.

[0022] Furthermore, an adjustment component is provided on the bottom surface of the medicine liquid tank, and the adjustment component includes a micro electric cylinder fixed on the bottom surface of the medicine liquid tank and an adjustment ring fixed on the end of the piston rod of the micro electric cylinder; the cross-section of the adjustment ring is circular, and the adjustment ring is against the arc-shaped top surface of the liquid pressure ring sheet.

[0023] Through the above technical solution, when the micro electric cylinder is started, the adjusting ring squeezes the liquid pressure ring sheet, thereby adjusting the angle at which the liquid medicine is ejected after impacting the liquid pressure ring sheet, and further adjusting the spraying range of the liquid medicine.

[0024] Furthermore, the liquid outlet head is tubular, and the two ends of the liquid outlet head are rotatably connected to the lower end of the medicine tube and the inner bottom surface of the liquid separation plate respectively; spiral holes are evenly opened on the side wall of the liquid outlet head, and the spiral holes extend around the axis of the liquid outlet head, and the inner opening of the spiral hole is higher than the outer opening.

[0025] Through the above technical solution, when the high-pressure liquid medicine in the pharmaceutical tube is sprayed out through the spiral hole, the liquid outlet head rotates, so that the liquid medicine sprayed into the liquid separation plate is more uniform.

[0026] The present invention also discloses a method for using a drone with a function of spraying liquid medicine, comprising the following steps:

[0027] S1. Open the solenoid valve to open the injection port, and use the liquid pump to pour the external liquid medicine into the liquid medicine tank through the injection port until the liquid medicine tank is filled with liquid medicine;

[0028] S2. The operator controls the drone to take off to the plant area where the pesticide is to be sprayed through the remote control in his hand;

[0029] S3, the operator remotely turns on the air pump and the liquid supply pump through the remote control, so that the piston block continuously moves vertically in the pressurized box, and at the same time, the liquid in the liquid tank continuously enters the pressurized box through the first infusion tube and the second infusion tube, so that the liquid is sprayed out through the medicine tube, the liquid distribution plate and the liquid pressure ring;

[0030] S4. The operator remotely starts the micro electric cylinder through the remote control, thereby adjusting the curvature of the ring extrusion liquid pressure ring to adjust the spraying range of the liquid.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] (1) Before the drone takes off, the operator fills the liquid medicine tank with liquid medicine through the dosing assembly, and then the operator takes off the drone body to the spraying area. At the same time, the liquid supply unit pumps the liquid medicine in the liquid medicine tank into the pressurizing box, and then the air pump pumps air into the pressurizing box, so that the piston block moves downward, pushing the liquid medicine in the pressurizing box to be sprayed out through the spraying assembly. Therefore, compared with the spraying method in which the amount of medicine is continuously reduced, the amount of medicine sprayed by the drone each time is more uniform, which is conducive to the full absorption of the plants;

[0033] (2) The operator opens the solenoid valve and then adds liquid medicine into the liquid medicine tank through the injection port and the first infusion tube, which is convenient and quick;

[0034] (3) When the liquid medicine is pushed into the medicine tube by the piston block, the high-pressure liquid medicine is sprayed onto the liquid separation plate through the liquid outlet head, and then impacts the liquid pressure ring and then sprayed out. Therefore, the liquid medicine sprayed out through multiple impacts is more likely to be atomized in the air, forming a liquid medicine that is evenly attached to the plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of embodiment 1;

[0036] Figure 2 Schematic diagram of the internal structure of the liquid medicine tank;

[0037] Figure 3 It is a structural schematic diagram of the piston block;

[0038] Figure 4 is a schematic diagram of the structure of the spray assembly;

[0039] Figure 5 It is a structural schematic diagram of the liquid outlet head;

[0040] Figure 6 It is a structural diagram of embodiment 2.

[0041] Description of the numbers in the figure:

[0042] 1. UAV body; 2. Liquid tank; 3. Spraying assembly; 31. Medicine tube; 32. Liquid separation plate; 33. Liquid pressure ring; 34. Liquid outlet head; 341. Spiral hole; 4. Pressurizing assembly; 41. Pressurizing box; 42. Piston block; 421. Annular sealing groove; 422. Sealing ring; 43. Air pump; 44. Pressurizing tube; 45. Liquid supply pump; 451. First infusion tube; 452. Second infusion tube; 5. Dosing assembly; 51. Injection port; 52. Solenoid valve; 6. Adjustment assembly; 61. Micro electric cylinder; 62. Adjustment ring; 7. Liquid supply tube. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] The present application is further described in detail below in conjunction with the accompanying drawings.

[0047] Embodiment 1

[0048] The present application embodiment discloses a drone with a function of spraying liquid medicine. Figure 1 , including a drone body 1, a spraying device is provided at the bottom of the drone body 1, the spraying device includes a liquid medicine tank 2 fixed at the bottom of the drone body 1, a spraying component 3 is provided at the bottom of the liquid medicine tank 2, and a pressurizing component 4 and a dosing component 5 are provided on the liquid medicine tank 2.

[0049] Reference Figure 2 , Figure 3 The pressurizing assembly 4 includes a pressurizing box 41 fixed in the liquid medicine tank 2, a piston block 42 disposed in the pressurizing box 41, an air pump 43 fixed outside the liquid medicine tank 2, a pressurizing pipe 44 connected between the air pump 43 and the top of the pressurizing box 41, and a liquid supply part for pumping the liquid medicine in the liquid medicine tank 2 to the pressurizing box 41. The spraying assembly 3 is connected to the bottom of the pressurizing box 41 in the liquid medicine tank 2. The piston block 42 is slidably connected to the inner wall of the pressurizing box 41 and sealed. Specifically, in combination with Figure 3 As shown, the piston block 42 is cup-shaped, and a plurality of annular sealing grooves 421 are provided on the outer wall of the piston block 42, and a sealing ring 422 is fixed in the annular sealing groove 421. The outer wall of the piston block 42 is slidably matched with the inner wall of the pressurizing box 41, and the sealing ring 422 is against the inner wall of the pressurizing box 41. The liquid supply part includes a liquid supply pump 45 fixed outside the liquid medicine box 2, and the liquid supply pump 45 is connected with a first infusion tube 451 and a second infusion tube 452. The first infusion tube 451 is connected to the bottom of the liquid medicine box 2, and the second infusion tube 452 penetrates the liquid medicine box 2 from the top of the liquid medicine box 2 and is connected to the bottom of the pressurizing box 41. When the liquid supply pump 45 is started, the liquid medicine in the liquid medicine box 2 is continuously transported to the pressurizing box 41 through the first infusion tube 451 and the second infusion tube 452 in turn, so that sufficient liquid medicine can be continuously fed into the pressurizing box 41, so that the spraying of the liquid medicine is more uniform. The medicine adding assembly 5 includes a medicine injection port 51 connected to the first infusion tube 451, and a solenoid valve 52 is provided on the medicine injection port 51. The operator opens the solenoid valve 52, and then adds medicine liquid into the medicine liquid tank 2 through the medicine injection port 51 and the first infusion tube 451, which is convenient and quick.

[0050] Combination Figure 4 As shown, the spray assembly 3 includes a medicine tube 31 fixed on the bottom surface of the medicine liquid tank 2, a liquid separation plate 32 arranged at the lower end of the medicine tube 31, and a liquid pressure ring 33 sleeved on the medicine tube 31. The upper end of the medicine tube 31 is connected to the pressurized box 41 in the medicine liquid tank 2. Figure 5 As shown, a liquid outlet head 34 is connected between the liquid separation plate 32 and the lower end of the medicine tube 31. The liquid outlet head 34 is tubular, and the two ends of the liquid outlet head 34 are rotatably connected to the lower end of the medicine tube 31 and the inner bottom surface of the liquid separation plate 32 respectively. Spiral holes 341 are evenly opened on the side wall of the liquid outlet head 34, and the spiral holes 341 extend around the axis of the liquid outlet head 34, and the inner opening of the spiral holes 341 is higher than the outer opening. The liquid pressure ring sheet 33 is made of copper sheet, the inner edge of the liquid pressure ring sheet 33 is fixedly connected to the outer wall of the medicine tube 31, and the outer edge of the liquid pressure ring sheet 33 is bent downward. The edge of the liquid separation plate 32 is bent upward, and the vertical projection of the liquid pressure ring sheet 33 covers the vertical projection of the liquid separation plate 32. An adjustment component 6 is provided on the bottom surface of the liquid medicine tank 2, and the adjustment component 6 includes a micro-electric cylinder 61 fixed on the bottom surface of the liquid medicine tank 2 and an adjustment ring 62 fixed on the end of the piston rod of the micro-electric cylinder 61. The cross section of the adjusting ring 62 is circular, and the adjusting ring 62 abuts against the arc-shaped top surface of the liquid-pressing ring piece 33. When the liquid medicine is pushed into the medicine tube 31 by the piston block 42, the high-pressure liquid medicine is sprayed to the liquid separation plate 32 through the spiral hole 341 on the liquid outlet head 34, and then impacts the liquid-pressing ring piece 33 and then sprayed out. Therefore, the liquid medicine sprayed by multiple impacts is more easily atomized in the air, forming a liquid medicine that is evenly attached to the plants.

[0051] The implementation principle of the drone with the function of spraying and applying medicine liquid in the embodiment of the present application is as follows: before the drone takes off, the operator opens the solenoid valve 52, fills the medicine liquid tank 2 with medicine liquid through the first infusion tube 451, and then the operator takes off the drone body 1 to the spraying area. At the same time, the liquid supply pump 45 is started to pump the medicine liquid in the medicine liquid tank 2 into the pressurizing box 41, and then the air pump 43 pumps air into the pressurizing box 41, so that the piston block 42 moves downward, pushing the medicine liquid in the pressurizing box 41 to enter the medicine tube 31, and then the high-pressure medicine liquid in the medicine tube 31 is sprayed to the liquid separation plate 32 through the liquid outlet head 34, and then impacts the liquid pressure ring sheet 33 and then sprayed out. Therefore, the medicine liquid sprayed by multiple impacts is more easily atomized in the air to form a medicine liquid evenly attached to the plants. Therefore, compared with the spraying method in which the amount of medicine is continuously reduced, the amount of medicine sprayed by the drone each time is more uniform, which is conducive to the full absorption of the plants.

[0052] Embodiment 2

[0053] The difference between this embodiment and the first embodiment is only in the liquid supply part and the dosing component 5. Figure 6The liquid supply part of the second embodiment is a liquid supply pipe 7, one end of which is connected to the bottom of the liquid medicine box 2, and the other end of which is connected to the bottom of the pressurizing box 41 through the top of the liquid medicine box 2. The dosing assembly 5 of the second embodiment includes a drug injection port 51 connected to the liquid supply pipe, and a solenoid valve 52 is provided on the drug injection port 51.

[0054] The liquid supply of the second embodiment naturally draws the liquid in the liquid tank 2 into the pressurized box 41 through the negative pressure generated by the upward movement of the piston block 42 in the pressurized box 41. The structure is simple, and the liquid can be injected into the liquid tank 2 through the solenoid valve 52 and the injection port 51, which is easy to operate.

[0055] Embodiment 3

[0056] Reference Figure 1-Figure 5 This embodiment is based on the first embodiment of a drone with a liquid medicine spraying function, and the use method includes the following steps:

[0057] S1. Open the electromagnetic valve 52 to open the medicine injection port 51, and use a liquid pump to inject the external medicine liquid into the medicine liquid tank 2 through the medicine injection port 51 until the medicine liquid tank 2 is filled with medicine liquid.

[0058] S2. The operator controls the drone body 1 to take off to the plant area to be sprayed with pesticides through the remote control in his hand.

[0059] S3. The operator remotely turns on the air pump 43 and the liquid supply pump 45 through the remote control, so that the piston block 42 continuously moves vertically in the pressurized box 41. At the same time, the medicine in the medicine tank 2 continuously enters the pressurized box 41 through the first infusion tube 451 and the second infusion tube 452, so that the medicine is sprayed out through the medicine tube 31, the liquid separation plate 32 and the liquid pressure ring 33.

[0060] S4. The operator remotely activates the micro electric cylinder 61 through the remote controller, thereby adjusting the curvature of the liquid pressure ring 33 by squeezing the ring 62, thereby adjusting the spraying range of the liquid medicine.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drone with the function of spraying liquid medicine, characterized in that: The invention comprises an unmanned aerial vehicle (UAV) body (1), wherein a spraying device is provided at the bottom of the UAV body (1), wherein the spraying device comprises a liquid medicine tank (2) fixed at the bottom of the UAV body (1), wherein a spraying assembly (3) is provided at the bottom of the liquid medicine tank (2), and wherein a pressurizing assembly (4) and a dosing assembly (5) are provided on the liquid medicine tank (2); wherein the pressurizing assembly (4) comprises a pressurizing box (41) fixed in the liquid medicine tank (2), a piston block (42) arranged in the pressurizing box (41), an air pump (43) fixed outside the liquid medicine tank (2), a pressurizing pipe (44) connected between the air pump (43) and the top of the pressurizing box (41), and a liquid supply part for pumping liquid medicine in the liquid medicine tank (2) to the pressurizing box (41), wherein the spraying assembly (3) is connected to the bottom of the pressurizing box (41) in the liquid medicine tank (2); and wherein the piston block (42) is slidably connected to the inner wall of the pressurizing box (41) and is in sealing cooperation; The liquid supply part comprises a liquid supply pump (45) fixed outside the liquid medicine box (2), and the liquid supply pump (45) is connected to a first liquid infusion tube (451) and a second liquid infusion tube (452), the first liquid infusion tube (451) is connected to the bottom of the liquid medicine box (2), and the second liquid infusion tube (452) penetrates into the liquid medicine box (2) from the top of the liquid medicine box (2) and is connected to the bottom of the pressurizing box (41), the piston block (42) is cup-shaped, and a plurality of annular sealing grooves (421) are formed on the outer wall of the piston block (42), and a sealing ring (422) is fixed in the annular sealing groove (421); the outer wall of the piston block (42) is slidably matched with the inner wall of the pressurizing box (41), and the sealing ring (422) is against the inner wall of the pressurizing box (41); The spray assembly (3) comprises a medicine tube (31) fixed on the bottom surface of the medicine liquid tank (2), a liquid separation plate (32) arranged at the lower end of the medicine tube (31), and a liquid pressure ring (33) sleeved on the medicine tube (31); the upper end of the medicine tube (31) is connected to the pressurizing box (41) in the medicine liquid tank (2); a liquid outlet head (34) is connected between the liquid separation plate (32) and the lower end of the medicine tube (31); the liquid pressure ring (33) is made of copper sheet, the inner edge of the liquid pressure ring (33) is fixedly connected to the outer wall of the medicine tube (31), and the outer edge of the liquid pressure ring (33) is bent downward; the edge of the liquid separation plate (32) is bent upward, and the vertical projection of the liquid pressure ring (33) covers the vertical projection of the liquid separation plate (32).

2. The drone with the function of spraying liquid medicine according to claim 1, characterized in that: The liquid supply part is a liquid supply pipe (7), one end of which is connected to the bottom of the liquid medicine box (2), and the other end of which passes through the top of the liquid medicine box (2) and is connected to the bottom of the pressurizing box (41).

3. The drone with the function of spraying liquid medicine according to claim 2, characterized in that: The medicine adding component (5) comprises a medicine injection port (51) connected to the first infusion tube (451), and a solenoid valve (52) is provided on the medicine injection port (51).

4. The drone with the function of spraying liquid medicine according to claim 3, characterized in that: The drug adding component (5) comprises a drug injection port (51) connected to the liquid supply pipe (7), and a solenoid valve (52) is provided on the drug injection port (51).

5. The drone with the function of spraying liquid medicine according to claim 4, characterized in that: The spray assembly (3) comprises a medicine tube (31) fixed on the bottom surface of the medicine liquid tank (2), a liquid separation plate (32) arranged at the lower end of the medicine tube (31), and a liquid pressure ring (33) sleeved on the medicine tube (31); the upper end of the medicine tube (31) is connected to the pressurizing box (41) in the medicine liquid tank (2); a liquid outlet head (34) is connected between the liquid separation plate (32) and the lower end of the medicine tube (31); the liquid pressure ring (33) is made of copper sheet, the inner edge of the liquid pressure ring (33) is fixedly connected to the outer wall of the medicine tube (31), and the outer edge of the liquid pressure ring (33) is bent downward; the edge of the liquid separation plate (32) is bent upward, and the vertical projection of the liquid pressure ring (33) covers the vertical projection of the liquid separation plate (32).

6. The drone with the function of spraying liquid medicine according to claim 5, characterized in that: The bottom surface of the liquid medicine box (2) is provided with an adjustment component (6), and the adjustment component (6) comprises a micro electric cylinder (61) fixed on the bottom surface of the liquid medicine box (2) and an adjustment ring (62) fixed on the end of the piston rod of the micro electric cylinder (61); the cross section of the adjustment ring (62) is circular, and the adjustment ring (62) abuts against the arc-shaped top surface of the liquid pressure ring sheet (33).

7. The drone with the function of spraying liquid medicine according to claim 6, characterized in that: The liquid outlet head (34) is tubular, and the two ends of the liquid outlet head (34) are rotatably connected to the lower end of the medicine tube (31) and the inner bottom surface of the liquid separation plate (32) respectively; spiral holes (341) are evenly opened on the side wall of the liquid outlet head (34), and the spiral holes (341) extend around the axis of the liquid outlet head (34), and the inner opening of the spiral hole (341) is higher than the outer opening thereof.

8. The method for using the drone with the function of spraying liquid medicine according to claim 7, characterized in that: The steps include: S1, opening the electromagnetic valve (52) so that the injection port (51) is open, and using a liquid pump to inject external liquid medicine into the liquid medicine tank (2) through the injection port (51) until the liquid medicine tank (2) is filled with liquid medicine; S2, the operator controls the drone body (1) to take off to the plant area where the pesticide is to be sprayed by using the remote control in his hand; S3, the operator remotely turns on the air pump (43) and the liquid supply pump (45) through the remote control, so that the piston block (42) continuously moves vertically in the pressurizing box (41), and at the same time, the liquid medicine in the liquid medicine box (2) continuously enters the pressurizing box (41) through the first liquid infusion tube (451) and the second liquid infusion tube (452), so that the liquid medicine is sprayed out through the medicine tube (31), the liquid separation plate (32) and the liquid pressure ring (33); S4. The operator remotely activates the micro electric cylinder (61) through the remote controller, thereby adjusting the curvature of the liquid pressure ring sheet (33) by squeezing the ring (62), thereby adjusting the spraying range of the liquid medicine.

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