Anti-drifting nozzle for nursery stock pesticide spraying unmanned aerial vehicle

Abstract

The utility model relates to the technical field of nursery stock protection, in particular to an anti-drifting sprayer for a nursery stock pesticide spraying unmanned aerial vehicle, which comprises a liquid guide pipe and an anti-blocking mechanism, the top of the liquid guide pipe is provided with a placing cavity, and the bottom of the liquid guide pipe is rotatably connected and communicated with an atomizing nozzle. An electric driving assembly fixedly connected with the liquid guide pipe is mounted on the surface of the atomizing nozzle; when the water pump conveys liquid medicine into the liquid guide pipe, the ring frame guides the liquid medicine to the inner side of the ring frame, and at the moment, the filter screen can filter out solid impurities passing through the liquid medicine, so that the clean liquid medicine enters the atomizing nozzle through the liquid guide pipe, and the probability that the atomizing nozzle is blocked by the solid impurities is effectively reduced; therefore, the problems that an existing anti-drifting spray head for the nursery stock pesticide spraying unmanned aerial vehicle is prone to being blocked, pesticide liquid is difficult to spray evenly, and the anti-drifting effect of the anti-drifting spray head is reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of seedling protection technology, and in particular to an anti-drift nozzle for a seedling spraying drone. Background Technology

[0002] Agricultural drones are unmanned aerial vehicles used for the protection of agricultural and forestry plants. They can be used not only for spraying pesticides, but also for fertilizing, sowing seeds, spreading feed, and other tasks, meeting the diverse needs of farmers and improving production efficiency.

[0003] Currently, a Chinese patent has disclosed an anti-drift centrifugal nozzle for agricultural drones (authorization announcement number CN205904004U). This utility model installs the centrifugal nozzle in parallel and adds a blocking curved wall to part of the base edge, so that the sprayed liquid can only be sprayed out through the notch on one side of the blocking curved wall, so that the centrifugal droplets have an initial vertical downward velocity, thereby reducing the amount of droplet drift in the air and improving the accuracy of pesticide spraying.

[0004] Currently, sprayed pesticide solutions inevitably contain solid particles due to factors such as water quality and pesticide residues. The aforementioned device directly introduces the pesticide solution into the atomizing structure for discharge. At this time, solid particles can easily clog the atomizing channel, resulting in uneven discharge of the atomized pesticide solution and increasing the probability of atomized pesticide solution drift.

[0005] Therefore, an anti-drift nozzle for seedling spraying drones is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an anti-drift nozzle for seedling spraying drones in order to solve the above-mentioned problems. This improves the problem that existing anti-drift nozzles for seedling spraying drones are easily clogged, making it difficult to spray pesticides evenly and reducing the anti-drift effect of the nozzles.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: an anti-drift nozzle for a seedling spraying drone, comprising: a liquid guide tube and an anti-clogging mechanism, wherein a placement cavity is provided at the top of the liquid guide tube, and an atomizing nozzle is rotatably connected and communicated with the bottom of the liquid guide tube, and an electric drive assembly fixedly connected to the liquid guide tube is installed on the surface of the atomizing nozzle.

[0008] Preferably, the anti-clogging mechanism includes a ring seat placed inside the placement cavity, a ring frame rotatably connected to the top of the ring seat, a filter screen and a guide plate fixedly connected to the inner side of the ring frame, the filter screen being disposed below the guide plate, and the guide plate being spiral in shape.

[0009] Preferably, the upper opening of the ring frame has a chamfer, and the chamfer is the same as the thickness of the ring frame.

[0010] Preferably, the filter screen is cone-shaped and is made of stainless steel.

[0011] Preferably, the cross-sectional shape of the top of the guide plate is an isosceles triangle.

[0012] Preferably, a support frame is fixedly connected to the inner side of the ring frame and disposed below the filter screen, and the upper surface of the support frame is in contact with the filter screen.

[0013] Preferably, a rotating cavity is formed on the lower surface of the ring frame, and a rotating ring fixedly connected to the ring seat is rotatably connected inside the rotating cavity. The vertical cross-sectional shape of both the rotating cavity and the rotating ring is inverted convex, and the maximum diameter of the rotating ring inside the rotating cavity is greater than the maximum inner diameter at the opening of the rotating cavity.

[0014] Preferably, the upper surface of the rotating ring is embedded with uniformly distributed balls, and the surface of the balls is in contact with the rotating cavity.

[0015] The beneficial effects of this utility model are:

[0016] 1. When the water pump delivers the liquid medicine into the liquid guide tube, the ring frame guides the liquid medicine to its inner side. At this time, the filter screen can filter out solid impurities in the liquid medicine, so that the clean liquid medicine enters the atomizing nozzle through the liquid guide tube. This effectively reduces the probability of the atomizing nozzle being blocked by solid impurities, and ensures that the atomizing nozzle can spray the liquid medicine evenly and stably. This solves the problem that the anti-drift nozzle of the existing seedling spraying drone is easily blocked, making it difficult to spray the liquid medicine evenly and reducing the anti-drift effect of the anti-drift nozzle.

[0017] 2. When the liquid medicine passes through the spiral guide plate, the liquid medicine can drive the ring frame to rotate by impacting the inclined surface of the guide plate. The ring frame drives the filter screen and the solid impurities intercepted by the filter screen to rotate together. This can guide the solid impurities to the edge of the filter screen through the centrifugal force of rotation. This can not only delay the probability of the filter screen becoming completely clogged, but also reduce the impact on the flow rate of the liquid medicine, so that the liquid medicine has sufficient flight speed when sprayed, thereby reducing the drift rate of the liquid medicine. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the anti-blocking mechanism in this utility model;

[0021] Figure 4 This is an explosion diagram of the anti-blocking mechanism in this utility model;

[0022] Figure 5 for Figure 2 A magnified view of A in the middle.

[0023] In the diagram: 100, liquid guide tube; 110, placement chamber; 200, atomizing nozzle; 300, electric drive assembly; 400, anti-clogging mechanism; 410, ring seat; 420, ring frame; 421, rotating chamber; 430, filter screen; 440, guide plate; 450, support frame; 460, rotating ring; 470, ball bearing. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In practical implementation: such as Figure 1-5 As shown, an anti-drift nozzle for a seedling spraying drone includes: a liquid guide tube 100 and an anti-clogging mechanism 400. The top of the liquid guide tube 100 is provided with a placement cavity 110, and the bottom of the liquid guide tube 100 is rotatably connected to and communicated with an atomizing nozzle 200. An electric drive assembly 300 fixedly connected to the liquid guide tube 100 is installed on the surface of the atomizing nozzle 200.

[0026] Agricultural drones include, but are not limited to, the following structures:

[0027] 1. Flight platform, including a frame for connecting various components and providing corresponding interfaces, landing gear for supporting the airframe and assisting the frame in safe take-off and landing, and mounting bracket for fixing the medicine box.

[0028] II. Control system, including a central control module integrating flight controller, data link, RTK module, power distribution board, GPS module for positioning, and remote controller with built-in power supply for controlling the drone's pitch, roll, yaw, ascent and descent.

[0029] III. The power system includes a propeller for flight, an external rotor three-phase AC brushless synchronous motor for driving the propeller, an electronic speed controller for controlling the speed of the external rotor three-phase AC brushless synchronous motor and adjusting the flight attitude and speed of the UAV, and a power supply for providing electrical energy for the overall operation of the UAV.

[0030] IV. Spraying system, including a pesticide tank for loading pesticides, a water pump for delivering pesticide solution, an anti-drift nozzle for reducing pesticide drift, a flow meter for accurately calculating the actual pesticide flow rate, and a level gauge for confirming the amount of pesticide solution.

[0031] The electric drive assembly 300 includes a waterproof motor fixedly connected to the surface of the liquid guide tube 100, a central control module matched and connected to the waterproof motor, a power supply for the waterproof motor, a fixed bracket fixedly connected to the top of the waterproof motor, a drive gear fixedly connected to the output end of the waterproof motor, and a driven gear fixedly connected to the surface of the atomizing nozzle 200 meshing with the surface of the drive gear. The user can control the central control module to start the waterproof motor by operating the remote control. The waterproof motor drives the drive gear to rotate, the drive gear drives the driven gear to rotate, and the driven gear drives the atomizing nozzle 200 to rotate, centrifugally throwing the liquid sprayed from the atomizing nozzle 200, which speeds up the flight speed of the liquid and reduces the probability of the liquid drifting during spraying.

[0032] When installing this anti-drift nozzle, the user needs to fasten the liquid guide pipe 100 to the outlet end of the water pump through a threaded connector, and then fix the mounting bracket on the top of the waterproof motor to the frame with bolts.

[0033] It should be noted that the components mentioned above, such as the frame, landing gear, mounting bracket, central control module, GPS module, remote controller, propeller, external rotor three-phase AC brushless synchronous motor, electronic speed controller, power supply, medicine tank, water pump, flow meter, level gauge, waterproof motor, drive gear, and driven gear, are all components with relatively mature existing technologies. Specific models can be selected according to actual needs, and will not be elaborated here.

[0034] like Figure 3 , Figure 4 and Figure 5 As shown, the anti-clogging mechanism 400 includes a ring seat 410 placed inside the placement cavity 110. A ring frame 420 is rotatably connected to the top of the ring seat 410. A filter screen 430 and a guide plate 440 are fixedly connected to the inner side of the ring frame 420. The filter screen 430 is located below the guide plate 440, which is spiral in shape. After the user separates the liquid guide tube 100 from the water pump, the user can remove the anti-clogging mechanism 400 as a whole for maintenance through the guide plate 440, thus facilitating maintenance. The upper opening of the ring frame 420 is beveled, and the bevel is the same as the thickness of the ring frame 420. This reduces the resistance of the liquid medicine entering the ring frame 420; the filter screen 430 is conical in shape and made of stainless steel, which actively guides the intercepted solid impurities to the edge of the filter screen 430 to reduce the filtration burden of the filter screen 430; the cross-sectional shape of the top of the guide plate 440 is an isosceles triangle, which reduces the resistance of the liquid medicine passing through the guide plate 440; a support frame 450 is fixedly connected to the inner side of the ring frame 420 and is located below the filter screen 430, and the upper surface of the support frame 450 contacts the filter screen 430, which can stably support the filter screen 430.

[0035] like Figure 4 and Figure 5 As shown, a rotating cavity 421 is provided on the lower surface of the ring frame 420. A rotating ring 460, which is fixedly connected to the ring seat 410, is rotatably connected inside the rotating cavity 421. The vertical cross-sectional shape of both the rotating cavity 421 and the rotating ring 460 is inverted convex. The maximum diameter of the rotating ring 460 inside the rotating cavity 421 is larger than the maximum inner diameter at the opening of the rotating cavity 421. This can stably connect the ring seat 410 and the ring frame 420 together without affecting the normal rotation of the ring frame 420. Evenly distributed balls 470 are embedded and installed on the upper surface of the rotating ring 460. The surface of the balls 470 contacts the rotating cavity 421, which can reduce the resistance of the ring frame 420 rotating on the ring seat 410.

[0036] When this invention is in use, when the water pump delivers the liquid medicine into the liquid guide pipe 100, the ring frame 420 guides the liquid medicine to its inner side. At this time, the filter screen 430 can filter out solid impurities in the liquid medicine, allowing the clean liquid medicine to enter the atomizing nozzle 200 through the liquid guide pipe 100, effectively reducing the probability of the atomizing nozzle 200 being blocked by solid impurities. At the same time, when the liquid medicine passes through the spiral guide plate 440, the liquid medicine can drive the ring frame 420 to rotate by impacting the inclined surface of the guide plate 440. The ring frame 420 drives the filter screen 430 and the solid impurities intercepted by the filter screen 430 to rotate together. This can guide the solid impurities to the edge of the filter screen 430 through the centrifugal force of rotation. This can not only delay the probability of the filter screen 430 being completely blocked, but also reduce the impact on the liquid medicine flow rate, so that the liquid medicine has sufficient flight speed when sprayed, thereby reducing the drift rate of the liquid medicine.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-drift nozzle for a seedling spraying drone, characterized in that, include: A liquid guide tube (100) is provided with a placement cavity (110) at the top of the liquid guide tube (100), and an atomizing nozzle (200) is rotatably connected and communicated with the bottom of the liquid guide tube (100). An electric drive assembly (300) that is fixedly connected to the liquid guide tube (100) is installed on the surface of the atomizing nozzle (200). An anti-clogging mechanism (400) includes a ring seat (410) placed inside the placement cavity (110). A ring frame (420) is rotatably connected to the top of the ring seat (410). A filter screen (430) and a guide plate (440) are fixedly connected to the inner side of the ring frame (420). The filter screen (430) is located below the guide plate (440), and the guide plate (440) is spiral in shape.

2. The anti-drift nozzle for a seedling spraying drone according to claim 1, characterized in that: The upper opening of the ring frame (420) is beveled, and the bevel is the same as the thickness of the ring frame (420).

3. The anti-drift nozzle for a seedling spraying drone according to claim 1, characterized in that: The filter screen (430) is cone-shaped and is made of stainless steel.

4. The anti-drift nozzle for a seedling spraying drone according to claim 1, characterized in that: The cross-sectional shape of the top of the guide plate (440) is an isosceles triangle.

5. The anti-drift nozzle for a seedling spraying drone according to claim 1, characterized in that: The inner side of the ring frame (420) is fixedly connected to a support frame (450) located below the filter screen (430), and the upper surface of the support frame (450) is in contact with the filter screen (430).

6. The anti-drift nozzle for a seedling spraying drone according to claim 1, characterized in that: The lower surface of the ring frame (420) is provided with a rotating cavity (421). The rotating cavity (421) is rotatably connected to a rotating ring (460) which is fixedly connected to the ring seat (410). The vertical cross-sectional shape of the rotating cavity (421) and the rotating ring (460) is both inverted convex. The maximum diameter of the rotating ring (460) inside the rotating cavity (421) is greater than the maximum inner diameter at the opening of the rotating cavity (421).

7. The anti-drift nozzle for a seedling spraying drone according to claim 6, characterized in that: The upper surface of the rotating ring (460) is embedded with uniformly distributed balls (470), and the surface of the balls (470) is in contact with the rotating cavity (421).

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