Pesticide spreading unmanned aerial vehicle for agricultural plant protection

Abstract

The invention discloses an agricultural plant protection pesticide spreading unmanned aerial vehicle, and relates to the technical field of plant protection unmanned aerial vehicles, the agricultural plant protection pesticide spreading unmanned aerial vehicle comprises a vehicle body, an inlet is formed in the upper end of the vehicle body, a pesticide spreading mechanism is arranged in the vehicle body, the center of the lower end of the vehicle body fixedly communicates with a conical pipe, and the bottom of the conical pipe fixedly communicates with a straight pipe; the bottom of the straight pipe is detachably connected with an atomizing spray head capable of atomizing, the atomizing spray head is in a circular arc shape, and the surface of a grinding roller and the surface of a filtering disc are rough, so that the grinding effect of agricultural medicine particles can be better promoted, and the agricultural medicine particles can be better dissolved in water; and through the design that the connecting rod is rotationally connected with the grinding roller, the grinding roller can also rotate when rotating with the rotating shaft as the axis, so that the side face of the grinding roller can grind the agricultural medicine particles on the filtering disc, and the grinding effect on the agricultural medicine particles is further promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of plant protection UAVs, and in particular to a pesticide spreading UAV for agricultural plant protection. Background Art

[0002] Plant protection UAV, also known as unmanned aerial vehicle, is an unmanned aircraft used for agricultural and forestry plant protection operations. This type of UAV consists of three parts: a flight platform (fixed-wing, helicopter, multi-axis aircraft), a navigation flight control, and a spraying mechanism. It can spray pesticides, seeds, powders, etc. through ground remote control or navigation flight control.

[0003] In the prior art, plant protection drones, which we also call pesticide-spreading drones, need to put water and granular drugs (such as imidacloprid, thiamethoxam, avermectin, carbendazim, thiophanate-methyl, myclobutanil, glyphosate, sethoxydim, etc.) into the chassis of the pesticide-spreading drone in advance and stir and mix them, and then start the drone for atomization spraying. In this process, the sprayed drugs are generally stirred manually, and the stirring effect is difficult to ensure. It is easy for granular drugs that are not fully fused to exist, which not only affects the efficacy of the drug, but also during spraying, the granular drugs that are not fully dissolved in water are easy to clog the atomization nozzle of the pesticide-spreading drone.

[0004] To this end, a pesticide spreading drone for agricultural plant protection is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a pesticide spraying drone for agricultural plant protection to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: A pesticide spraying drone for agricultural plant protection, comprising a body, an inlet is opened at the upper end of the body, a pesticide spraying mechanism is arranged in the body, a conical tube is fixedly connected to the center of the lower end of the body, a straight tube is fixedly connected to the bottom of the conical tube, an atomizing nozzle capable of atomizing is detachably connected to the bottom of the straight tube, and the atomizing nozzle is arc-shaped;

[0007] The medicine spreading mechanism includes a motor, which is arranged at the center of the upper end surface of the machine body, the output shaft of the motor is fixedly connected to a rotating shaft, the rotating shaft is located inside the machine body, and the lower end of the rotating shaft is fixedly connected to a power unit for spreading medicine, the power unit is located just above the atomizing nozzle, and an expansion part is arranged on the side wall of the straight tube;

[0008] Preferably, a plurality of stirring rods are fixedly connected to the side wall of the rotating shaft at equal intervals.

[0009] Preferably, the power unit includes a reciprocating cavity, which is opened at the bottom of the rotating shaft, and a reciprocating transmission bead is fixedly connected to the inner wall of the reciprocating cavity. The reciprocating transmission bead is meshingly connected to a reciprocating screw rod, and the reciprocating screw rod extends through the reciprocating cavity, and a disc is fixedly connected to the bottom of the reciprocating screw rod.

[0010] Preferably, the disc is provided with a plurality of outlets at equal intervals, a slide groove is provided on one side of each of the outlets, a T-rod extends through the slide groove and is slidably connected thereto, a plurality of limit grooves for the T-rod to limit and slide are provided on the conical tube and the straight tube, one end of the T-rod extends into and is sealed and slidably connected to the limit groove, a first spring is provided on the T-rod, the first spring is provided in the slide groove, a sealing plate is fixedly connected to the end of the T-rod extending into the slide groove, one end of the sealing plate extends through the slide groove and is slidably connected thereto, and one end of the sealing plate extending out of the slide groove extends into the outlet and is sealed and slidably connected thereto.

[0011] Preferably, a filter disc is arranged in the body, the rotating shaft extends through the filter disc and is slidably connected, a transmission protrusion is fixedly connected to the place where the rotating shaft extends through the filter disc, an oblique annular groove is provided on the side wall of the filter disc where the rotating shaft penetrates, the transmission protrusion extends into the oblique annular groove and is transmission connected, a plurality of straight grooves are provided on the side wall of the inner surface of the body, a slider extends through each straight groove and is slidably connected, and the slider is fixedly connected to the filter disc.

[0012] Preferably, an annular groove is provided on the side wall of the rotating shaft, an annular pressure plate is slidably connected in the annular groove, a shielding tube is fixedly connected to the outer wall of the annular pressure plate, a plurality of telescopic rods are fixedly connected in annular shape at equal intervals in the annular groove, the telescopic rods extend through the annular pressure plate and are slidably connected, a second spring is sleeved on each of the telescopic rods, the second spring is located on the annular pressure plate, and a plurality of scraping rods are fixedly connected in annular shape at equal intervals on the side wall of the shielding tube.

[0013] Preferably, a plurality of connecting rods are fixedly connected in a circular shape at equal intervals on the side wall of the shielding cylinder, and a rolling roller is rotatably connected to each of the connecting rods. The plurality of rolling rollers and the plurality of scraping rods are cross-arranged, and the surfaces of the rolling rollers and the filter discs are both rough, and the surfaces of the rolling rollers and the scraping rods are in contact and connected with the surface of the filter disc.

[0014] Preferably, the expansion portion includes an annular cavity, which is provided on the side wall of the straight tube, and an annular block is slidably connected to the annular cavity, a straight hole is provided in the annular block, a vertical rod extends through the straight hole and is slidably connected, a plurality of adjacent limiting holes are provided at equal intervals on the side wall of the vertical rod, a plurality of triangular grooves are provided at equal intervals on the side wall of the inner surface of the annular cavity, the plurality of triangular grooves are adjacently designed, and a triangular limiting block with a triangular shape on one side extends through the limiting hole and is slidably connected, one end of the triangular limiting block extending out of the limiting hole extends into the triangular groove, and the other end of the triangular limiting block is fixedly connected with a T-shaped pull rod, the T-shaped pull rod extends through the annular block and is slidably connected, a third spring is provided on the T-shaped pull rod, and the third spring is provided in the groove where the T-shaped pull rod passes through the annular block.

[0015] Preferably, a plurality of support rod racks are fixedly connected to the side wall of the annular block in an annular shape and at equal intervals, a plurality of control panels are hingedly connected to the bottom of the straight tube in an annular shape and at equal intervals, each of the control panels is provided with a control groove, one end of the support rod rack extends into and is slidably connected to the control groove, a conical retractable expansion membrane is arranged around the bottom of the atomizing nozzle, and a plurality of the control panels are fixedly connected to the expansion membrane in an annular shape and at equal intervals.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention rotates the telescopic rod in the annular groove where the telescopic rod is located by rotating the rotating shaft, the annular pressure plate on the telescopic rod rotates, the connecting rod to which the annular pressure plate is fixedly connected through the shielding tube rotates, and the rolling roller on the connecting rod rotates with the rotating shaft as the axis, thereby rolling the agricultural drug particles on the filter disc. The design that the surfaces of the rolling roller and the filter disc are both roughened is to better promote the rolling effect of the agricultural drug particles and promote the agricultural drug particles to be better dissolved in water. The design of the connection rod and the rolling roller is rotatably connected, so that when the rolling roller rotates with the rotating shaft as the axis, it will also rotate, so that the side of the rolling roller can roll the agricultural drug particles on the filter disc, thereby further promoting the rolling effect of the agricultural drug particles;

[0018] 2. The present invention limits the position of the slider fixedly connected to the side wall of the filter disc through the straight groove, so that the filter disc can only move up and down but cannot rotate. The rotation of the shaft drives the transmission protrusion fixedly connected to the shaft to rotate. Since the transmission protrusion moves in the oblique annular groove of the filter disc, the transmission protrusion can only rotate but not move up and down. Therefore, when the transmission protrusion rotates, the filter disc where the oblique annular groove is located moves up and down and vibrates, generating a shock effect, thereby further preventing the problem of being partially adhered to the filter disc after being squeezed by agricultural drug particles, preventing agricultural drug particles from clogging the mesh of the filter disc, reducing the filtering effect of the filter disc, and further promoting the dissolution of agricultural drug particles into water, and not easy to form precipitation;

[0019] 3. In the present invention, the agricultural drug particles completely dissolved in water will become liquid medicine and gradually pass through the filter disk to reach the area below the filter disk in the machine body, while the agricultural drug particles that are not completely fused are still in the area above the filter disk of the machine body, so that in subsequent use, only the liquid medicine that is completely fused can be sprayed from the atomizing nozzle below, which promotes the spraying effect of agricultural spraying and prevents the atomizing pores on the atomizing nozzle from being blocked;

[0020] 4. The present invention is that when the disc moves upward and leaves the straight tube to reach the conical tube area, the T-bar moves under the action of the first spring, and the sealing sheet fixedly connected to the T-bar moves, so that the outlet is no longer sealed, so the liquid medicine also flows down from the outlet and flows to the atomizing nozzle, thereby increasing the amount of liquid medicine at the atomizing nozzle, so that more liquid medicine can be atomized and sprayed. The first spring also has a function of ensuring that one side of the T-bar always extends into the limiting groove for limiting, so that the T-bar and the disc cannot rotate, so as to ensure that the reciprocating screw fixedly connected to the disc can move up and down smoothly;

[0021] 5. After the liquid medicine enters the atomizing nozzle, the disc moves downward to the straight pipe area. At this time, the sealing sheet in the disc also moves back to seal the outlet and continues to move downward, thereby squeezing the liquid medicine in the atomizing nozzle to be atomized and sprayed downward, thereby protecting agricultural plants. Since the drug particles and water contained in the liquid medicine are completely mixed and there is no precipitation, it can also prevent the atomizing nozzle from being blocked;

[0022] 6. The vertical rod of the present invention is used to limit the annular block so that it can only move vertically. The triangular groove is used to fix the annular block through the triangular limiting block. The triangular design of the triangular groove and the adjacent design are used to extend the triangular tip of the triangular limiting block into the triangular groove when the triangular tip moves to the triangular groove area, and fix the annular block to prevent the triangular limiting block from being pressed against the area between the two triangular grooves. The limiting hole on the vertical rod is designed to form a double limiting fixation of the annular block with the triangular groove. The limiting hole can also help the triangular groove bear the gravity transmitted from the annular block to the triangular groove through the triangular limiting block.

[0023] 7. The present invention moves the annular block downward after the triangular limit block moves away from the triangular groove and the limit hole, and the annular block moves downward, and the support rod frame to which it is fixedly connected moves downward, so that the extrusion control plate rotates in an arc at its hinge point, and multiple control plates rotate in an arc, thereby controlling the expansion membranes connected thereto to expand and contract, thereby controlling the atomization range of the atomizing nozzle, so as to facilitate reasonable adjustment according to the size, range, and area of ​​agricultural plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the overall structural view of the present invention;

[0025] Figure 2 It is the overall structural view of the body of the present invention;

[0026] Figure 3 It is a cross-sectional view of the body of the present invention;

[0027] Figure 4 is a cross-sectional view of the rotating shaft of the present invention;

[0028] Figure 5 It is a combined view of the straight tube and the control plate of the present invention;

[0029] Figure 6 is a cross-sectional view of the body of the present invention;

[0030] Figure 7 A structural view of the filter disc in the body of the present invention;

[0031] Figure 8 It is a structural view of the disc of the present invention.

[0032] In the figure:

[0033] 1. Machine body; 11. Inlet; 12. Conical tube; 13. Straight tube; 14. Atomizing nozzle; 2. Spraying mechanism; 21. Motor; 22. Rotating shaft; 23. Power unit; 24. Extension unit; 3. Stirring rod; 41. Reciprocating chamber; 42. Reciprocating screw rod; 43. Reciprocating transmission ball; 44. Disc; 5. T-bar; 51. Slide; 52. Sealing sheet; 53. Outlet; 54. First spring; 6. Filter disc; 61. Oblique annular groove; 62. Transmission protrusion; 6 3. Straight groove; 64. Sliding block; 7. Annular groove; 71. Annular pressure plate; 72. Shielding tube; 73. Telescopic rod; 74. Second spring; 75. Scraper rod; 76. Connecting rod; 77. Rolling roller; 8. Annular cavity; 81. Annular block; 82. Straight hole; 83. Vertical rod; 84. Limit hole; 85. Triangular groove; 86. Triangular limit block; 87. T-shaped pull rod; 88. Third spring; 89. Support rod frame; 9. Control board; 91. Control groove; 92. Expansion membrane. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 8 , the present invention provides a technical solution:

[0036] A pesticide spraying drone for agricultural plant protection comprises a body 1, an inlet 11 is provided at the upper end of the body 1, a pesticide spraying mechanism 2 is arranged in the body 1, a conical tube 12 is fixedly connected to the center of the lower end of the body 1, a straight tube 13 is fixedly connected to the bottom of the conical tube 12, an atomizing nozzle 14 capable of atomizing is detachably connected to the bottom of the straight tube 13, and the atomizing nozzle 14 is arc-shaped;

[0037] The medicine spreading mechanism 2 includes a motor 21, which is arranged at the center of the upper end surface of the body 1. The output shaft of the motor 21 is fixedly connected to a rotating shaft 22, and the rotating shaft 22 is located inside the body 1. The lower end of the rotating shaft 22 is fixedly connected to a power unit 23 for spreading medicine, and the power unit 23 is located directly above the atomizing nozzle 14. An expansion unit 24 is provided on the side wall of the straight tube 13.

[0038] As an embodiment of the present invention, as shown in the figure, a plurality of stirring rods 3 are fixedly connected to the side wall of the rotating shaft 22 at equal intervals.

[0039] The power unit 23 includes a reciprocating chamber 41, which is opened at the bottom of the rotating shaft 22. A reciprocating transmission bead 43 is fixedly connected to the inner wall of the reciprocating chamber 41. The reciprocating transmission bead 43 is meshingly connected to a reciprocating screw rod 42. The reciprocating screw rod 42 extends through the reciprocating chamber 41, and a disc 44 is fixedly connected to the bottom of the reciprocating screw rod 42.

[0040] A plurality of outlets 53 are provided at equal intervals in the disc 44, and a slide groove 51 is provided on one side of each of the outlets 53. A T-bar 5 extends out from the slide groove 51 and is slidably connected thereto. A plurality of limit grooves for the T-bar 5 to limit and slide are provided on the conical tube 12 and the straight tube 13. One end of the T-bar 5 extends into and is sealed and slidably connected to the limit groove. A first spring 54 is provided on the T-bar 5, and the first spring 54 is provided in the slide groove 51. A sealing sheet 52 is fixedly connected to one end of the T-bar 5 extending into the slide groove 51, and one end of the sealing sheet 52 extends out from the slide groove 51 and is slidably connected thereto. One end of the sealing sheet 52 extending out of the slide groove 51 extends into the outlet 53 and is sealed and slidably connected thereto.

[0041] During operation, the design of the reciprocating screw 42 and the reciprocating drive bead 43 fixedly connected in the reciprocating cavity 41 opened in the rotating shaft 22 makes the T-bar 5 unable to rotate due to the limitation of the T-bar 5 by the limiting groove, that is, the disc 44 where the T-bar 5 is located cannot rotate but can only move up and down, that is, the disc 44 cannot rotate but can only move up and down. When the rotating shaft 22 rotates, the reciprocating drive bead 43 in the rotating shaft 22 rotates, prompting the meshing transmission reciprocating screw 42 to move up and down, the reciprocating screw 42 moves up and down, and the disc 44 fixedly connected thereto moves up and down. When the disc 44 moves upward and leaves the straight tube 13 to reach the area of ​​the conical tube 12, the prepared liquid medicine flows down from the gap between the disc 44 and the conical tube 12, and flows down to the atomizing nozzle 14 below.

[0042] Furthermore, when the disc 44 moves upward and leaves the straight tube 13 to reach the area of ​​the conical tube 12, the T-bar 5 moves under the action of the first spring 54, and the sealing sheet 52 fixedly connected to the T-bar 5 moves, thereby no longer sealing the outlet 53, so that the liquid medicine also flows down from the outlet 53 and flows to the atomizing nozzle 14, thereby increasing the amount of liquid medicine at the atomizing nozzle 14, so that more liquid medicine can be atomized and sprayed. The first spring 54 also has a function of ensuring that one side of the T-bar 5 always extends into the limiting groove for limiting, so that the T-bar 5 and the disc 44 cannot rotate, so as to ensure that the reciprocating screw 42 fixedly connected to the disc 44 can move up and down smoothly;

[0043] After the medicine liquid enters the atomizing nozzle 14, the disc 44 moves downward to the straight tube 13 area. At this time, the sealing sheet 52 in the disc 44 also moves back to seal the outlet 53 and continues to move downward, thereby squeezing the medicine liquid in the atomizing nozzle 14 to be atomized and sprayed downward, thereby protecting agricultural plants. Since the medicine particles and water contained in the medicine liquid are completely mixed and there is no precipitation, it can also prevent the atomizing nozzle 14 from being blocked.

[0044] As an embodiment of the present invention, as shown in the figure, a filter disc 6 is arranged in the body 1, the rotating shaft 22 extends through the filter disc 6 and is slidably connected, a transmission protrusion 62 is fixedly connected at the place where the rotating shaft 22 extends through the filter disc 6, an oblique annular groove 61 is opened on the side wall of the filter disc 6 where the rotating shaft 22 penetrates, the transmission protrusion 62 extends into the oblique annular groove 61 and is transmission connected, a plurality of straight grooves 63 are opened on the side wall of the inner surface of the body 1, a slider 64 extends through each of the straight grooves 63 and is slidably connected, and the slider 64 is fixedly connected to the filter disc 6.

[0045] An annular groove 7 is provided on the side wall of the rotating shaft 22, and an annular pressure plate 71 is slidably connected in the annular groove 7. A shielding tube 72 is fixedly connected to the outer wall of the annular pressure plate 71, and a plurality of telescopic rods 73 are fixedly connected in an annular shape with equal intervals in the annular groove 7. The telescopic rods 73 extend through the annular pressure plate 71 and are slidably connected. A second spring 74 is sleeved on each of the telescopic rods 73, and the second spring 74 is located on the annular pressure plate 71. A plurality of scraping rods 75 are fixedly connected in an annular shape with equal intervals in the side wall of the shielding tube 72.

[0046] The side wall of the shielding cylinder 72 is fixedly connected with a plurality of connecting rods 76 in a circular shape and at equal intervals. A rolling roller 77 is rotatably connected to each of the connecting rods 76. The plurality of rolling rollers 77 and the plurality of scraper rods 75 are cross-arranged. The surfaces of the rolling rollers 77 and the filter disc 6 are both roughened, and the surfaces of the rolling rollers 77 and the scraper rods 75 are in contact and connected with the surface of the filter disc 6.

[0047] When working, the drone is started, and the flight path of the drone is adjusted so that the flight path corresponds to the agricultural plants to be sprayed, and then the motor 21 is powered to make the spraying mechanism 2 work, and the motor 21 is started to drive the rotating shaft 22 to rotate through the output shaft;

[0048] The rotating shaft 22 rotates, and the telescopic rod 73 in the annular groove 7 in which it is located rotates, and the annular pressure plate 71 on the telescopic rod 73 rotates. The connecting rod 76 to which the annular pressure plate 71 is fixedly connected through the shielding tube 72 rotates, and the rolling roller 77 on the connecting rod 76 rotates with the rotating shaft 22 as the axis, so as to roll the agricultural drug particles on the filter disc 6. The surface of the rolling roller 77 and the filter disc 6 are both roughened in order to better promote the rolling effect of the agricultural drug particles and promote the agricultural drug particles to be better dissolved in water. The design of the connection rod 76 and the rolling roller 77 is rotatably connected, so that when the rolling roller 77 rotates with the rotating shaft 22 as the axis, it will also rotate, so that the side of the rolling roller 77 can roll the agricultural drug particles on the filter disc 6, thereby further promoting the rolling effect of the agricultural drug particles.

[0049] Furthermore, when the shielding cylinder 72 rotates, the scraper rod 75 fixedly connected to the shielding cylinder 72 rotates, thereby scraping the agricultural drug particles crushed by the crushing roller 77, preventing the agricultural drug particles from being partially adhered to the filter disc 6 after being squeezed, affecting the filtering effect of the filter disc 6, and also promoting the drug particles to quickly dissolve in water and not easily form precipitation;

[0050] The design of the cross arrangement of the plurality of rolling rollers 77 and the plurality of scraping rods 75 is such that the front of the rolling roller 77 rolls the agricultural drug particles, and the scraping rods 75 at the rear scrape the agricultural drug particles that have just been rolled, and then the subsequent rolling rollers 77 squeeze again, and the subsequent scraping rods 75 scrape again, so that the agricultural drug particles are broken in the process and the agricultural drug particles are quickly dissolved in water after being broken in the process;

[0051] Due to the limitation of the straight groove 63 on the slider 64 fixedly connected to the side wall of the filter disc 6, the filter disc 6 can only move up and down but cannot rotate. The rotation of the rotating shaft 22 drives the transmission protrusion 62 fixedly connected to the rotating shaft 22 to rotate. Since the transmission protrusion 62 moves in the oblique annular groove 61 of the filter disc 6, the transmission protrusion 62 can only rotate but not move up and down. Therefore, when the transmission protrusion 62 rotates, the filter disc 6 where the oblique annular groove 61 is located moves up and down and vibrates, producing a shock effect, thereby further preventing the problem of being partially adhered to the filter disc 6 after being squeezed by the agricultural drug particles, preventing the agricultural drug particles from clogging the mesh of the filter disc 6, reducing the filtering effect of the filter disc 6, and further promoting the dissolution of the agricultural drug particles into the water, and not easy to form precipitation;

[0052] When the filter disc 6 moves up and down reciprocatingly, the rolling roller 77 and the scraper rod 75 move up and down, and the shielding tube 72 fixedly connected to the rolling roller 77 and the scraper rod 75 moves up and down. The shielding tube 72 is always sealed and slidably wrapped in the annular groove 7 therein during the up and down movement, and its purpose is to reduce the entry of agricultural drug particles into the annular groove 7. The purpose of the design of the annular groove 7 and the annular pressure plate 71 is that when the filter disc 6 moves up and down, the rolling roller 77 and the scraper rod 75 can also follow the up and down movement, and the design of the plurality of second springs 74 is to increase the downward pressure on the annular pressure plate 71, thereby increasing the downward pressure of the rolling roller 77 and the scraper rod 75 to move downward, so that when the filter disc 6 moves up and down, the rolling roller 77 and the scraper rod 75 can follow the up and down movement more closely, so as to ensure the rolling ability of the rolling roller 77 on the agricultural drug particles and the scraping ability of the scraper rod 75 on the agricultural drug particles.

[0053] When the rotating shaft 22 rotates, the stirring rod 3 fixedly connected to the rotating shaft 22 rotates, so as to promote the agricultural drug particles in the water to dissolve into the water better and faster, and prevent the agricultural drug particles dissolved in the water from re-precipitating, and cooperate with the rolling roller 77 and the scraper 75 to achieve better effect;

[0054] The agricultural drug particles completely dissolved in water will become liquid medicine and gradually pass through the filter disk 6 to the area below the filter disk 6 in the body 1, while the agricultural drug particles that are not completely fused are still in the area above the filter disk 6 of the body 1, so that in subsequent use, only the liquid medicine that is completely fused can be sprayed from the atomizing nozzle 14 below, which promotes the spraying effect of agricultural spraying and prevents the atomizing pores on the atomizing nozzle 14 from being blocked;

[0055] As an embodiment of the present invention, as shown in the figure, the expansion portion 24 includes an annular cavity 8, and the annular cavity 8 is opened on the side wall of the straight tube 13. An annular block 81 is slidably connected in the annular cavity 8. A straight hole 82 is opened in the annular block 81, and a vertical rod 83 is extended through and slidably connected in the straight hole 82. A plurality of limiting holes 84 are adjacently opened on the side wall of the vertical rod 83 at equal intervals. A plurality of triangular grooves 85 are opened on the side wall of the inner surface of the annular cavity 8 at equal intervals. The plurality of triangular grooves 85 are adjacently designed, and a triangular limiting block 86 with a triangular shape on one side is extended through and slidably connected in the limiting hole 84. One end of the triangular limiting block 86 extends out of the limiting hole 84 and extends into the triangular groove 85. The other end of the triangular limiting block 86 extends out of the limiting hole 84 and extends into the triangular groove 85. A T-shaped pull rod 87 is fixedly connected to the end, and the T-shaped pull rod 87 extends through the annular block 81 and is slidably connected. A third spring 88 is arranged on the T-shaped pull rod 87, and the third spring 88 is arranged in the groove where the T-shaped pull rod 87 passes through the annular block 81. A plurality of support rod frames 89 are fixedly connected to the side wall of the annular block 81 in a circular shape with equal intervals. A plurality of control plates 9 are hingedly connected to the bottom of the straight tube 13 in a circular shape with equal intervals. A control groove 91 is opened on each of the control plates 9. One end of the support rod frame 89 extends into and is slidably connected to the control groove 91. A conical retractable expansion membrane 92 is arranged around the bottom of the atomizing nozzle 14, and a plurality of control plates 9 are fixedly connected to this expansion membrane 92 in a circular shape with equal intervals.

[0056] During operation, the T-shaped pull rod 87 is pulled to move, and the triangular limit block 86 fixedly connected to the T-shaped pull rod 87 moves. A receiving groove for accommodating the triangular limit block 86 is provided on the annular block 81. The triangular limit block 86 moves away from the triangular groove 85 and the limiting hole 84 and then extends into the receiving groove. At this time, the triangular limit block 86 is limited and cannot move any further, that is, the T-shaped pull rod 87 fixedly connected to the triangular limit block 86 cannot be pulled. Therefore, it can be judged that the T-shaped pull rod 87 is pulled to a certain extent to just pull out the triangular limit block 86.

[0057] The function of the vertical rod 83 is to limit the annular block 81 so that it can only move vertically. The triangular groove 85 is used to fix the annular block 81 through the triangular limiting block 86. The triangular design of the triangular groove 85 and the adjacent design are intended to allow the triangular tip of the triangular limiting block 86 to extend into the triangular groove 85 when it moves to the triangular groove 85 area, thereby fixing the annular block 81 and preventing the triangular limiting block 86 from abutting against the area between the two triangular grooves 85. The limiting hole 84 on the vertical rod 83 is designed to form a double limiting fixation of the annular block 81 with the triangular groove 85. The limiting hole 84 can also help the triangular groove 85 bear the gravity transmitted from the annular block 81 to the triangular groove 85 through the triangular limiting block 86.

[0058] After the triangular limit block 86 moves away from the triangular groove 85 and the limit hole 84, the annular block 81 moves downward, and the annular block 81 moves downward and the support rod frame 89 to which it is fixed moves downward, thereby squeezing the control plate 9 to rotate in an arc at its hinge point, and multiple control plates 9 rotate in an arc, thereby controlling the expansion membrane 92 connected thereto to expand and contract, thereby controlling the atomization range of the atomizing nozzle 14, so as to facilitate reasonable adjustment according to the size, range, and area of ​​the agricultural plants.

[0059] Working principle: When working, the disc 44 is initially located in the straight tube 13 to block the tube mouth of the straight tube 13, so that the liquid pesticide in the body 1 is difficult to leak out. First, granular pesticide is put into the body 1 through the inlet 11, and the granular pesticide falls on the filter disc 6. After adding a proper amount of granular pesticide, i.e. pesticide granules, water is then poured into the body 1 through the inlet 11. The water level of the water should be higher than the upper end surface of the stirring rod 3, so that sufficient water and pesticide granules can be mixed, and a larger area of ​​agricultural plants can be sprayed;

[0060] After the above preparations are completed, the drone is started, and the flight path of the drone is adjusted so that the flight path corresponds to the agricultural plants to be sprayed, and then the motor 21 is powered to make the spraying mechanism 2 work, and the motor 21 is started to cause the rotating shaft 22 to rotate through the output shaft;

[0061] The rotating shaft 22 rotates, and the telescopic rod 73 in the annular groove 7 in which it is located rotates, and the annular pressure plate 71 on the telescopic rod 73 rotates. The connecting rod 76 to which the annular pressure plate 71 is fixedly connected through the shielding tube 72 rotates, and the rolling roller 77 on the connecting rod 76 rotates with the rotating shaft 22 as the axis, so as to roll the agricultural drug particles on the filter disc 6. The surface of the rolling roller 77 and the filter disc 6 are both roughened in order to better promote the rolling effect of the agricultural drug particles and promote the agricultural drug particles to be better dissolved in water. The design of the connection rod 76 and the rolling roller 77 is rotatably connected, so that when the rolling roller 77 rotates with the rotating shaft 22 as the axis, it will also rotate, so that the side of the rolling roller 77 can roll the agricultural drug particles on the filter disc 6, thereby further promoting the rolling effect of the agricultural drug particles.

[0062] Furthermore, when the shielding cylinder 72 rotates, the scraper rod 75 fixedly connected to the shielding cylinder 72 rotates, thereby scraping the agricultural drug particles crushed by the crushing roller 77, preventing the agricultural drug particles from being partially adhered to the filter disc 6 after being squeezed, affecting the filtering effect of the filter disc 6, and also promoting the drug particles to quickly dissolve in water and not easily form precipitation;

[0063] The design of the cross arrangement of the plurality of rolling rollers 77 and the plurality of scraping rods 75 is such that the front of the rolling roller 77 rolls the agricultural drug particles, and the scraping rods 75 at the rear scrape the agricultural drug particles that have just been rolled, and then the subsequent rolling rollers 77 squeeze again, and the subsequent scraping rods 75 scrape again, so that the agricultural drug particles are broken in the process and the agricultural drug particles are quickly dissolved in water after being broken in the process;

[0064] Due to the limitation of the straight groove 63 on the slider 64 fixedly connected to the side wall of the filter disc 6, the filter disc 6 can only move up and down but cannot rotate. The rotation of the rotating shaft 22 drives the transmission protrusion 62 fixedly connected to the rotating shaft 22 to rotate. Since the transmission protrusion 62 moves in the oblique annular groove 61 of the filter disc 6, the transmission protrusion 62 can only rotate but not move up and down. Therefore, when the transmission protrusion 62 rotates, the filter disc 6 where the oblique annular groove 61 is located moves up and down and vibrates, producing a shock effect, thereby further preventing the problem of being partially adhered to the filter disc 6 after being squeezed by the agricultural drug particles, preventing the agricultural drug particles from clogging the mesh of the filter disc 6, reducing the filtering effect of the filter disc 6, and further promoting the dissolution of the agricultural drug particles into the water, and not easy to form precipitation;

[0065] When the filter disc 6 moves up and down reciprocatingly, the rolling roller 77 and the scraper rod 75 move up and down, and the shielding tube 72 fixedly connected to the rolling roller 77 and the scraper rod 75 moves up and down. The shielding tube 72 is always sealed and slidably wrapped in the annular groove 7 therein during the up and down movement, and its purpose is to reduce the entry of agricultural drug particles into the annular groove 7. The purpose of the design of the annular groove 7 and the annular pressure plate 71 is that when the filter disc 6 moves up and down, the rolling roller 77 and the scraper rod 75 can also follow the up and down movement, and the design of the plurality of second springs 74 is to increase the downward pressure on the annular pressure plate 71, thereby increasing the downward pressure of the rolling roller 77 and the scraper rod 75 to move downward, so that when the filter disc 6 moves up and down, the rolling roller 77 and the scraper rod 75 can follow the up and down movement more closely, so as to ensure the rolling ability of the rolling roller 77 on the agricultural drug particles and the scraping ability of the scraper rod 75 on the agricultural drug particles.

[0066] When the rotating shaft 22 rotates, the stirring rod 3 fixedly connected to the rotating shaft 22 rotates, so as to promote the agricultural drug particles in the water to dissolve into the water better and faster, and prevent the agricultural drug particles dissolved in the water from re-precipitating, and cooperate with the rolling roller 77 and the scraper 75 to achieve better effect;

[0067] The agricultural drug particles completely dissolved in water will become liquid medicine and gradually pass through the filter disk 6 to the area below the filter disk 6 in the body 1, while the agricultural drug particles that are not completely fused are still in the area above the filter disk 6 of the body 1, so that in subsequent use, only the liquid medicine that is completely fused can be sprayed from the atomizing nozzle 14 below, which promotes the spraying effect of agricultural spraying and prevents the atomizing pores on the atomizing nozzle 14 from being blocked;

[0068] The design of the reciprocating drive bead 43 fixedly connected to the reciprocating screw 42 and the reciprocating cavity 41 opened in the rotating shaft 22 is such that the T-bar 5 cannot rotate due to the limiting groove on the T-bar 5, that is, the disc 44 where the T-bar 5 is located cannot rotate but can only move up and down, that is, the disc 44 cannot rotate but can only move up and down, when the rotating shaft 22 rotates, the reciprocating drive bead 43 in the rotating shaft 22 rotates, prompting the meshing transmission reciprocating screw 42 to move up and down, the reciprocating screw 42 moves up and down, and the disc 44 fixedly connected to it moves up and down, when the disc 44 moves upward to leave the straight tube 13 and reach the area of ​​the conical tube 12, the prepared liquid medicine flows down from the gap between the disc 44 and the conical tube 12, and flows down to the atomizing nozzle 14 below;

[0069] Furthermore, when the disc 44 moves upward and leaves the straight tube 13 to reach the area of ​​the conical tube 12, the T-bar 5 moves under the action of the first spring 54, and the sealing sheet 52 fixedly connected to the T-bar 5 moves, thereby no longer sealing the outlet 53, so that the liquid medicine also flows down from the outlet 53 and flows to the atomizing nozzle 14, thereby increasing the amount of liquid medicine at the atomizing nozzle 14, so that more liquid medicine can be atomized and sprayed. The first spring 54 also has a function of ensuring that one side of the T-bar 5 always extends into the limiting groove for limiting, so that the T-bar 5 and the disc 44 cannot rotate, so as to ensure that the reciprocating screw 42 fixedly connected to the disc 44 can move up and down smoothly;

[0070] After the liquid medicine enters the atomizing nozzle 14, the disc 44 moves downward to the straight tube 13 area. At this time, the sealing sheet 52 in the disc 44 also moves back to seal the outlet 53 and continues to move downward, thereby squeezing the liquid medicine in the atomizing nozzle 14 to be atomized and sprayed downward, thereby protecting agricultural plants. Since the drug particles and water contained in the liquid medicine are completely mixed and there is no precipitation, it can also prevent the atomizing nozzle 14 from being blocked;

[0071] Pull the T-shaped pull rod 87 to move, and the triangular limit block 86 fixedly connected to the T-shaped pull rod 87 moves. The annular block 81 is provided with a receiving groove for receiving the triangular limit block 86. The triangular limit block 86 moves away from the triangular groove 85 and the limiting hole 84 and then extends into the receiving groove. At this time, the triangular limit block 86 is limited and cannot move any further, that is, the T-shaped pull rod 87 fixedly connected to the triangular limit block 86 cannot be pulled. Therefore, it can be judged that the T-shaped pull rod 87 is pulled to a certain extent to just pull out the triangular limit block 86.

[0072] The function of the vertical rod 83 is to limit the annular block 81 so that it can only move vertically. The triangular groove 85 is used to fix the annular block 81 through the triangular limiting block 86. The triangular design of the triangular groove 85 and the adjacent design are intended to allow the triangular tip of the triangular limiting block 86 to extend into the triangular groove 85 when it moves to the triangular groove 85 area, and to fix the annular block 81 to prevent it from being pressed against the area between the two triangular grooves 85. The limiting hole 84 on the vertical rod 83 is designed to form a double limiting fixation of the annular block 81 with the triangular groove 85. The limiting hole 84 can also help the triangular groove 85 to bear the gravity transmitted from the annular block 81 to the triangular groove 85 through the triangular limiting block 86.

[0073] After the triangular limit block 86 moves away from the triangular groove 85 and the limit hole 84, the annular block 81 moves downward, and the annular block 81 moves downward and the support rod frame 89 to which it is fixed moves downward, thereby squeezing the control plate 9 to rotate in an arc at its hinge point, and multiple control plates 9 rotate in an arc, thereby controlling the expansion membrane 92 connected thereto to expand and contract, thereby controlling the atomization range of the atomizing nozzle 14, so as to facilitate reasonable adjustment according to the size, range, and area of ​​the agricultural plants.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pesticide spraying drone for agricultural plant protection, comprising a body (1), characterized in that: The upper end of the machine body (1) is provided with an inlet (11), a medicine spreading mechanism (2) is arranged inside the machine body (1), and a conical tube (12) is fixedly connected to the center of the lower end of the machine body (1), a straight tube (13) is fixedly connected to the bottom of the conical tube (12), and an atomizing nozzle (14) capable of atomizing is detachably connected to the bottom of the straight tube (13), and the atomizing nozzle (14) is in the shape of an arc; The drug spreading mechanism (2) comprises a motor (21), the motor (21) is arranged at the center of the upper end surface of the machine body (1), the output shaft of the motor (21) is fixedly connected to a rotating shaft (22), the rotating shaft (22) is located inside the machine body (1), and the lower end of the rotating shaft (22) is fixedly connected to a power unit (23) for spreading drugs, the power unit (23) is located directly above the atomizing nozzle (14), and an expansion unit (24) is provided on the side wall of the straight tube (13).

2. The agricultural plant protection pesticide spraying drone according to claim 1, characterized in that: A plurality of stirring rods (3) are fixedly connected to the side wall of the rotating shaft (22) at equal intervals.

3. The agricultural plant protection pesticide spraying drone according to claim 2, characterized in that: The power unit (23) comprises a reciprocating cavity (41), the reciprocating cavity (41) is opened at the bottom of the rotating shaft (22), a reciprocating transmission bead (43) is fixedly connected to the inner wall of the reciprocating cavity (41), the reciprocating transmission bead (43) is meshingly connected to a reciprocating screw rod (42), the reciprocating screw rod (42) extends through the reciprocating cavity (41), and a disc (44) is fixedly connected to the bottom of the reciprocating screw rod (42).

4. The agricultural plant protection pesticide spraying drone according to claim 3, characterized in that: A plurality of outlets (53) are provided at equal intervals in the disc (44), and a slide groove (51) is provided on one side of each of the outlets (53). A T-bar (5) extends through and extends from the slide groove (51) and is slidably connected thereto. A plurality of limit grooves for the T-bar (5) to limit and slide are provided on the conical tube (12) and the straight tube (13). One end of the T-bar (5) extends into and is sealed and slidably connected to the limit groove. A first spring (54) is provided on the T-bar (5), and the first spring (54) is provided in the slide groove (51). One end of the T-bar (5) extending into the slide groove (51) is fixedly connected to a sealing sheet (52). One end of the sealing sheet (52) extends through and extends from the slide groove (51) and is slidably connected thereto. One end of the sealing sheet (52) extending from the slide groove (51) extends into the outlet (53) and is sealed and slidably connected thereto.

5. The agricultural plant protection pesticide spraying drone according to claim 4, characterized in that: A filter disc (6) is arranged in the machine body (1), the rotating shaft (22) penetrates and extends out of the filter disc (6) and is slidably connected, a transmission protrusion (62) is fixedly connected at the place where the rotating shaft (22) penetrates and extends out of the filter disc (6), an oblique annular groove (61) is provided on the side wall of the filter disc (6) where the rotating shaft (22) penetrates, the transmission protrusion (62) extends into the oblique annular groove (61) and is transmission-connected, a plurality of straight grooves (63) are provided on the side wall of the inner surface of the machine body (1), a slider (64) penetrates and extends out of each straight groove (63) and is slidably connected, and the slider (64) is fixedly connected to the filter disc (6).

6. The agricultural plant protection pesticide spraying drone according to claim 5, characterized in that: The side wall of the rotating shaft (22) is provided with an annular groove (7), an annular pressure plate (71) is slidably connected in the annular groove (7), a shielding tube (72) is fixedly connected to the outer wall of the annular pressure plate (71), a plurality of telescopic rods (73) are fixedly connected in an annular shape at equal intervals in the annular groove (7), the telescopic rods (73) extend through the annular pressure plate (71) and are slidably connected, each of the telescopic rods (73) is sleeved with a second spring (74), the second spring (74) is located on the annular pressure plate (71), and a plurality of scraping rods (75) are fixedly connected in an annular shape at equal intervals on the side wall of the shielding tube (72).

7. The agricultural plant protection pesticide spraying drone according to claim 6, characterized in that: A plurality of connecting rods (76) are fixedly connected to the side wall of the shielding cylinder (72) at equal intervals in a ring shape, and each of the connecting rods (76) is rotatably connected to a rolling roller (77). The plurality of rolling rollers (77) and the plurality of scraping rods (75) are cross-arranged, and the surfaces of the rolling rollers (77) and the filter disc (6) are both roughened, and the surfaces of the rolling rollers (77) and the scraping rods (75) are in contact with and connected to the surface of the filter disc (6).

8. The agricultural plant protection pesticide spraying drone according to claim 7, characterized in that: The expansion portion (24) comprises an annular cavity (8), wherein the annular cavity (8) is provided on the side wall of the straight tube (13), an annular block (81) is slidably connected in the annular cavity (8), a straight hole (82) is provided in the annular block (81), a vertical rod (83) extends through the straight hole (82) and is slidably connected, a plurality of limiting holes (84) are adjacently provided at equal intervals on the side wall of the vertical rod (83), a plurality of triangular grooves (85) are equally spaced on the side wall of the inner surface of the annular cavity (8), and the plurality of triangular grooves (85) are adjacently designed, and A triangular limiting block (86) with a triangular shape on one side extends through and out of the limiting hole (84) and is slidably connected thereto. One end of the triangular limiting block (86) extends out of the limiting hole (84) and extends into the triangular groove (85). The other end of the triangular limiting block (86) is fixedly connected to a T-shaped pull rod (87). The T-shaped pull rod (87) extends through and out of the annular block (81) and is slidably connected thereto. A third spring (88) is arranged on the T-shaped pull rod (87). The third spring (88) is arranged in the groove where the T-shaped pull rod (87) extends through the annular block (81).

9. The agricultural plant protection pesticide spraying drone according to claim 8, characterized in that: A plurality of support rod frames (89) are fixedly connected to the side wall of the annular block (81) at equal intervals in an annular shape. A plurality of control plates (9) are hingedly connected to the bottom of the straight tube (13) at equal intervals in an annular shape. A control groove (91) is provided on each of the control plates (9). One end of the support rod frame (89) extends into and is slidably connected to the control groove (91). A conical retractable expansion membrane (92) is arranged around the lower part of the atomizing nozzle (14), and a plurality of the control plates (9) are fixedly connected to the expansion membrane (92) at equal intervals in an annular shape.

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