Liquid level detection device for agricultural pesticide spraying box

Abstract

The utility model relates to an agricultural pesticide spraying box liquid level detection device which is used for a pesticide spraying box of an unmanned aerial vehicle, a placing frame is fixedly arranged at the bottom of the unmanned aerial vehicle, a center cylinder is fixedly arranged in the center of the bottom wall of the pesticide spraying box, a plurality of communicating holes are formed in the side wall of the center cylinder, and an electronic liquid level detection rod floats in the center cylinder. A floating plate is fixedly arranged on the upper portion of the electronic liquid level detection rod, a plurality of anti-shaking rods are symmetrically and fixedly arranged on the two sides of the center cylinder, a PLC control device electrically connected with the electronic liquid level detection rod is fixedly arranged on the top of the unmanned aerial vehicle, and specifically, the center cylinder communicates with an inner cavity of the pesticide spraying box through a communicating hole. The liquid level in the pesticide spraying box is flush with the liquid level in the central cylinder; the liquid level of the pesticide spraying box can be prevented from violently shaking through the anti-shaking rod, the liquid level of the center cylinder can be prevented from violently shaking through the floating plate, the stability of the unmanned aerial vehicle in the flying process is improved, and the measurement accuracy of the electronic liquid level detection rod is improved.

Description

Technical Field

[0001] The utility model relates to the field of agricultural pesticide spraying, in particular to a liquid level detection device for an agricultural pesticide spraying tank. Background Art

[0002] The unmanned aerial vehicle, abbreviated as "UAV", is an unpiloted aircraft controlled by a radio remote control device and a self - contained program control device. Currently, it has been widely used in aerial photography, agriculture, plant protection, micro - self - shooting, express delivery, disaster rescue, observing wild animals, monitoring infectious diseases, etc., thus greatly expanding the uses of the UAV itself. In the agricultural field, with the gradual development and progress of agricultural UAV technology, more and more agricultural UAV companies are emerging across the country. Some large agricultural households have introduced agricultural UAVs and applied them to actual farm operations. Using UAVs for pesticide spraying has become a trend. However, the existing UAV medicine boxes are prone to oscillation inside the box during take - off or sudden stop, which affects the detection accuracy of the liquid level detection rod for the liquid level, and thus urgent improvement is needed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a liquid level detection device for an agricultural pesticide spraying tank, which is used to solve the problem that the existing liquid level detection device for an agricultural pesticide spraying tank is easily affected by liquid level oscillation and thus affects the measurement accuracy.

[0004] To solve the above problems, the utility model provides a liquid level detection device for an agricultural pesticide spraying tank, which is used for the pesticide spraying tank of a UAV. A placement frame is fixedly arranged at the bottom of the UAV. A central cylinder is fixedly arranged at the center of the bottom wall of the pesticide spraying tank. A plurality of communication holes are formed in the side wall of the central cylinder. An electronic liquid level detection rod floats inside the central cylinder. A floating plate is fixedly arranged at the upper part of the electronic liquid level detection rod. A plurality of anti - sway rods are symmetrically and fixedly arranged on both sides of the central cylinder. A PLC control device electrically connected to the electronic liquid level detection rod is fixedly arranged at the top of the UAV.

[0005] The liquid level detection device for an agricultural pesticide spraying tank provided by the utility model further has the following technical features:

[0006] Further, pressing rods are symmetrically and threadedly connected to the top of the UAV, and a pressing plate is fixedly arranged at the bottom end of the pressing rods.

[0007] Further, the pesticide spraying tank includes a box body and a box cover. A liquid adding port is arranged at the center of the top of the box cover, and a plugging block is threadedly connected to the liquid adding port.

[0008] Further, spraying pipes are symmetrically and fixedly arranged on both sides of the placement frame. A liquid pumping assembly is fixedly arranged below the side wall of the placement frame. The liquid pumping assembly includes a liquid pump and a liquid distribution pipe communicated with the spraying pipes. The liquid pumping end of the liquid pump is communicated with the inner cavity of the spraying tank. The liquid inlet end of the liquid distribution pipe is communicated with the liquid discharging end of the liquid pump. The liquid outlet ends of the liquid distribution pipe are respectively communicated with the spraying pipes.

[0009] Further, a plurality of liquid spraying nozzles are fixedly arranged on the bottom wall of the spraying pipe.

[0010] Further, the floating plate is made of rubber.

[0011] The utility model has the following beneficial effects: The central cylinder is communicated with the inner cavity of the spraying tank through the communication holes. Based on the principle of the communicating vessel, the liquid level in the spraying tank is flush with the liquid level in the central cylinder. The anti-slosh rod can prevent the liquid level in the spraying tank from shaking violently, and the floating plate can prevent the liquid level in the central cylinder from shaking violently, which not only improves the stability of the UAV during flight, but also improves the accuracy of the electronic liquid level detection rod during measurement. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the overall structure of the liquid level detection device for the agricultural spraying tank. Detailed Embodiments

[0013] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0014] As Figure 1 shown in the embodiment of the liquid level detection device for the agricultural spraying tank of the present utility model, for the spraying tank 2 of the UAV 1, a placement frame 3 is fixedly arranged at the bottom of the UAV 1. A central cylinder 4 is fixedly arranged at the center of the bottom wall of the spraying tank 2. A plurality of communication holes 40 are formed in the side wall of the central cylinder 4. An electronic liquid level detection rod 5 floats in the central cylinder 4. A floating plate 6 is fixedly arranged on the upper part of the electronic liquid level detection rod 5. A plurality of anti-slosh rods 41 are symmetrically and fixedly arranged on both sides of the central cylinder 4. A PLC control device 7 electrically connected to the electronic liquid level detection rod 5 is fixedly arranged at the top of the UAV 1. Specifically, the central cylinder 4 is communicated with the inner cavity of the spraying tank 2 through the communication holes 40. Based on the principle of the communicating vessel, the liquid level in the spraying tank 2 is flush with the liquid level in the central cylinder 4. The anti-slosh rod 41 can prevent the liquid level in the spraying tank 2 from shaking violently, and the floating plate 6 can prevent the liquid level in the central cylinder 4 from shaking violently, which not only improves the stability of the UAV 1 during flight, but also improves the accuracy of the electronic liquid level detection rod 5 during measurement.

[0015] In an embodiment of the present application, pressing rods 8 are symmetrically and threadedly connected to the top of the drone 1. A pressing plate 81 is fixedly provided at the bottom end of the pressing rod 8. Specifically, by tightening the pressing rod 8, the pressing plate 81 can press the medicine spraying tank 2 to ensure the stability of the medicine spraying tank 2.

[0016] In an embodiment of the present application, the medicine spraying tank 2 includes a tank body 21 and a tank cover 22. A liquid adding port is provided at the center of the top of the tank cover 22, and a blocking block 220 is threadedly connected to the liquid adding port.

[0017] In an embodiment of the present application, medicine spraying pipes 30 are symmetrically and fixedly provided on both sides of the placing frame 3. A liquid pumping pump assembly 9 is fixedly provided below the side wall of the placing frame 3. The liquid pumping pump assembly 9 includes a liquid pumping pump 91 and a liquid distribution pipe 92 communicated with the medicine spraying pipes 30. The liquid pumping end of the liquid pumping pump 91 is communicated with the inner cavity of the medicine spraying tank 2. The liquid inlet end of the liquid distribution pipe 92 is communicated with the liquid discharge end of the liquid pumping pump 91, and the liquid outlet ends of the liquid distribution pipe 92 are respectively communicated with the medicine spraying pipes 30. Specifically, the liquid pumping pump 91 can pump the liquid medicine in the medicine spraying tank 2 to the liquid distribution pipe 92, and the liquid medicine can be distributed to each medicine spraying pipe 30 through the liquid distribution pipe 92. The liquid medicine in the medicine spraying pipes 30 is evenly sprayed out from a plurality of liquid spraying heads 300.

[0018] In an embodiment of the present application, a plurality of liquid spraying heads 300 are fixedly provided on the bottom wall of the medicine spraying pipe 30.

[0019] In an embodiment of the present application, the floating plate 51 is made of rubber.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An agricultural spray tank liquid level detection device, used for a spray tank of an unmanned aerial vehicle, characterized in that: A placement frame is fixedly provided at the bottom of the drone, a central tube is fixedly provided at the center of the bottom wall of the spray box, a plurality of connecting holes are opened on the side wall of the central tube, an electronic liquid level detection rod floats in the central tube, a floating plate is fixedly provided on the upper part of the electronic liquid level detection rod, a plurality of anti-sway rods are symmetrically fixedly provided on both sides of the central tube, and a PLC control device electrically connected to the electronic liquid level detection rod is fixedly provided on the top of the drone.

2. The liquid level detection device for an agricultural spray tank according to claim 1, characterized in that: The top of the drone is symmetrically threaded with a clamping rod, and the bottom end of the clamping rod is fixed with a pressure plate.

3. The liquid level detection device for an agricultural spray tank according to claim 2, characterized in that: The medicine spray box comprises a box body and a box cover. A liquid filling port is arranged at the top center of the box cover, and a sealing block is threadedly connected to the liquid filling port.

4. The liquid level detection device for an agricultural spray tank according to claim 1, characterized in that: Spray pipes are symmetrically fixed on both sides of the placement frame, and a liquid pump assembly is fixed under the side wall of the placement frame. The liquid pump assembly includes a liquid pump and a liquid dispensing tube connected to the spray pipe, the liquid suction end of the liquid pump is connected to the inner cavity of the spray box, the liquid inlet end of the liquid dispensing tube is connected to the liquid discharge end of the liquid pump, and the liquid outlet ends of the liquid dispensing tubes are respectively connected to the spray pipes.

5. The liquid level detection device for an agricultural spray tank according to claim 4, characterized in that: A plurality of liquid spray heads are fixedly arranged on the bottom wall of the medicine spraying pipe.

6. The liquid level detection device for an agricultural spray tank according to claim 1, characterized in that: The floating board is made of rubber.

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