CN105857893B - Unmanned plane medicine-chest and the valve for unmanned plane medicine-chest - Google Patents

Abstract

The invention discloses a valve for an unmanned aerial vehicle medicine box and an unmanned aerial vehicle medicine box with the valve. The valve includes: a valve body suitable for connecting with the unmanned aerial vehicle medicine box, a valve channel is defined in the valve body, and the valve body The prop has an outer opening and an inner opening; it is suitable for a U-shaped tube arranged in the medicine box of the drone, and the U-shaped tube has a first opening end and a second opening end, the first opening end fits in the inner opening, and the second opening The end is arranged in the medicine box of the drone and is arranged adjacent to the lower surface of the valve body. According to the valve for the medicine box of the drone of the present invention, the air pressure balance inside and outside the medicine box of the drone can be maintained, and the medicine liquid can be prevented from splashing or leaking.

Description

Drone medicine boxes and valves for drone medicine boxes

technical field

The invention relates to the technical field of plant protection, and more specifically, to a valve for a medicine box of an unmanned aerial vehicle and a medicine box for an unmanned aerial vehicle with the valve.

Background technique

With the continuous rise of large-scale agriculture, agricultural drones have increasingly appeared in the field of agricultural plant protection operations in recent years. As a drone for the purpose of plant protection, the rational design of drone drug storage containers, especially The rational design of the opening of the drone's medicine storage container and the valve mechanism installed on the opening directly affects the working efficiency of the agricultural plant protection drone.

Generally, there are two situations for the opening of the medicine storage container. One situation is that the medicine storage container is provided with three openings. The first one is the medicine injection or toilet cover on the top of the container, which is generally used for filling the medicine liquid or washing the medicine storage container. ; The second is the ventilation hole at the top of the medicine storage container; the third is the medicine outlet at the bottom of the container, from which the medicine liquid is generally output when the drone is operating. Another kind of situation is that the medicine storage container is provided with two openings, and the first one is the medicine injection or toilet cover opening and ventilation hole that is positioned at the top of the medicine storage container, and the second is the medicine outlet that is positioned at the bottom of the container. When the UAV is working, as the medicine liquid in the medicine storage container gradually decreases, negative pressure will be generated inside, and the air hole needs to be opened to maintain the air pressure balance inside and outside the box; , It is also necessary to open the air hole to maintain the air pressure balance inside and outside the box, because the air in the drug storage container will be squeezed by the filled medicinal solution to increase the pressure inside the drug storage container.

The purpose of setting the air holes in the above two cases is to automatically suck in or exhaust air to keep the pressure balance inside and outside the medicine box, but the setting of the air holes may cause the problem of exposure or splashing of the liquid medicine.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an object of the present invention proposes a valve for a drone medicine box, which can maintain the balance of the internal pressure and air pressure of the drone medicine box and prevent medicinal liquid from splashing out.

Another object of the present invention is to propose a drone medicine box with the above-mentioned valve.

A valve for a medicine box for an unmanned aerial vehicle according to an embodiment of the present invention includes: a valve body adapted to be connected with the medicine box for an unmanned aerial vehicle, a valve channel is defined in the valve body, and the valve channel has an outer opening and Inner opening; a U-shaped tube suitable for being arranged in the medicine box of the drone, the U-shaped tube has a first open end and a second open end, and the first open end fits in the inner opening, The second open end is disposed in the drone medicine box and adjacent to the lower surface of the valve body.

The valve for the medicine box of the drone according to the embodiment of the present invention can maintain the air pressure balance inside and outside the medicine box of the drone, and prevent the medicine liquid from splashing or leaking out.

In addition, the valve according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

According to some embodiments of the present invention, the opening end surface of the first opening end and the opening end surface of the second opening end are respectively formed as planes parallel to the horizontal plane, and the horizontal height of the opening end surface of the first opening end is higher than that of the second opening end. The horizontal height of the open face of the two open ends.

According to some embodiments of the present invention, the valve passage includes sub-channels extending in the vertical direction, and the U-shaped pipe includes: a first vertical pipe section, and the upper end of the first vertical pipe section is formed as the first The open end is inserted in the sub-channel; the second vertical pipe section, the upper end of the second vertical pipe section is formed as the second open end; the arc pipe, the arc pipe connects the first the lower end of the vertical pipe section and the lower end of the second vertical pipe section.

According to some embodiments of the present invention, the valve further includes: a pipe clip, the pipe clip is connected to the valve body, and a first installation hole and a second installation hole penetrating up and down are provided in the pipe clip, the first The open end is inserted in the first installation hole, and the second open end is inserted in the second installation hole.

According to some embodiments of the present invention, the pipe clamp is formed in an L shape and includes a vertical clip section and a horizontal clip section, the first installation hole is provided in the vertical clip section and inserted in the sub-channel Inside, a second installation hole is defined in the horizontal clip section, and the upper surface of the horizontal clip section is spaced apart from the lower surface of the valve body.

According to some embodiments of the present invention, one end of the horizontal clamping section away from the vertical clamping section is provided with a notch communicating with the second installation hole, and the notch passes through the upper surface and the lower surface of the horizontal clamping section. surface.

According to some embodiments of the present invention, the valve body includes: a valve core, the valve channel is defined in the valve core; a valve cover, the valve cover is sleeved on the valve core and connected to the The machine medicine box is threadedly connected, and the second open end is spaced apart from the valve cover and the valve core.

According to some embodiments of the present invention, the valve core includes: a valve core body, the valve channel is defined in the valve core body, and an outwardly protruding stopper is provided on the outer peripheral surface of the upper part of the valve core body. The stopper, the outer peripheral surface of the lower part of the valve core body is provided with external threads; the fixing nut is sleeved and threadedly connected to the lower part of the valve core body, and the valve cover is sleeved on the valve core body. The core body is stopped against between the stop portion and the fixing nut.

According to some embodiments of the present invention, the valve further includes: a sealing ring, the sealing ring is sleeved on the valve core body and stops between the valve cover and the fixing nut.

According to some embodiments of the present invention, the valve cover includes: a top wall, the middle part of the top wall is recessed downward to form a receiving groove, the bottom wall of the receiving groove is provided with an installation through hole, and the valve core passes through In the installation through hole and the upper part of the valve core is located in the receiving groove; the annular wall is connected to the outer periphery of the top wall and extends downward, and the inner periphery of the annular wall The surface is spaced apart from the inner peripheral wall of the receiving groove to form a gap, and the inner peripheral surface of the annular wall is provided with an internal thread suitable for threaded connection with the drone medicine box.

According to some embodiments of the present invention, the outer peripheral surface of the valve core is spaced apart from the outer peripheral wall of the accommodating groove, and the outer opening includes a plurality of outer openings spaced along the circumferential direction of the valve core. on the outer peripheral surface of the spool.

The drone medicine box according to the embodiment of the present invention includes the valve for the drone medicine box according to the embodiment of the invention.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

Fig. 1 is a cross-sectional view of a valve for an unmanned aerial vehicle medicine box according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of a valve for a drone medicine box according to an embodiment of the present invention;

Fig. 3 is a schematic structural view of a spool for a drone medicine box according to an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of another angle of the spool used for the medicine box of the drone according to the embodiment of the present invention;

Fig. 5 is a schematic structural view of a pipe clamp for a drone medicine box according to an embodiment of the present invention;

6 is a schematic structural view of a valve cover for a drone medicine box according to an embodiment of the present invention;

Fig. 7 is a schematic structural view of a fixing nut for a drone medicine box according to an embodiment of the present invention.

Reference signs:

valve 100;

Valve body 10; outer opening 101; inner opening 102; sub-channel 103; receiving groove 104; installation through hole 105; stopper part 106; external thread 107; internal thread 108; ; Bonnet 12; Top wall 121; Annular wall 122; Seal ring 13;

U-shaped pipe 20; first open end 201; second open end 202; first vertical pipe section 21; second vertical pipe section 22; arc pipe 23;

Pipe clamp 30; first installation hole 301; second installation hole 302; notch 303; vertical clamp section 31; horizontal clamp section 32; guide surface 310;

Sealing ring 40.

Detailed ways

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The valve 100 for a drone medicine box according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Wherein, the up and down directions shown in the drawings are subject to the normal use state of the valve 100, and the axial direction of the valve 100 is usually the vertical direction. Of course, the axial direction of the valve 100 can also be slightly different from the vertical direction as required Tilting, at this time, the entire structure of the valve 100 shown in the drawings will be tilted relative to the vertical direction, which is understandable to those skilled in the art.

1 to 7, according to the embodiment of the present invention, the valve 100 for the medicine box of the drone can be installed at the air hole of the medicine box of the drone, and the valve 100 can include a valve body 10 and a U-shaped pipe 20 , The valve body 10 can be connected with the medicine box of the drone, and the U-shaped tube 20 can be connected with the valve body 10. When the valve 100 is installed at the vent hole, the U-shaped tube 20 can be located in the medicine box of the drone.

The valve body 10 can define a valve passage, the valve passage has an outer opening 101 and an inner opening 102, the valve passage can allow gas to pass through, the outer opening 101 can communicate with the outside world, and the inner opening 102 can communicate with the inside of the UAV medicine box. The U-shaped tube 20 has a first open end 201 and a second open end 202, the first open end 201 fits in the inner opening 102, and the second open end 202 is arranged in the medicine box of the drone. Thus, the inside of the drone medicine box can communicate with the outside world through the U-shaped tube 20 and the valve body 10 . Wherein, the second open end 202 is disposed adjacent to the lower surface of the valve body 10 . That is, the second open end 202 is spaced apart from the lower surface of the valve body 10 by a small distance.

Thus, not only the valve body 10 will not affect the gas communication between the second opening end 202 and the inside of the medicine box of the drone, but also the height of the second opening end 202 is relatively high, so that the liquid medicine in the medicine box of the drone is not easily Enter the second open end 202, and at the same time, when the liquid medicine enters the U-shaped tube 20, the U-shaped tube 20 will store the liquid medicine, and the liquid medicine needs to pass through the second open end 202 to flow out, and the liquid medicine flows out The path of the UAV medicine box is not only longer, but also more tortuous, so that the liquid medicine is not easy to flow out, and the medicine liquid in the medicine box of the drone can be prevented from splashing or flowing out; at the same time, the inside of the medicine box of the drone can pass through the U-shaped tube 20 It realizes communication with the outside world with the valve body 10, and the communication effect is better, which ensures the smooth entry and exit of gas.

According to the valve 100 for the drone medicine box according to the embodiment of the present invention, the U-shaped tube 20 is arranged on the valve body 10, and the second open end 202 that makes the U-shaped tube 20 communicate with the inside of the drone medicine box The height is high, not only can achieve a better ventilation function, but also can effectively prevent the liquid medicine from flowing out, so that when the medicine box is outputting the medicine solution and the medicine filling equipment is filling the medicine box, the valve 100 can be used under the action of atmospheric pressure. Automatically suck or exhaust air to maintain the pressure balance inside and outside the UAV medicine box. The liquid medicine in the box will not leak or splash in a large amount from the valve 100, and at the same time, it can increase the medicine irrigation efficiency and improve the working efficiency of the plant protection drone. The valve 100 with this structure is simple in structure, easy to manufacture and safe and reliable.

More preferably, the open end surface of the first open end 201 and the open end surface of the second open end 202 can be respectively formed as a plane parallel to the horizontal plane, and the level of the open end surface of the first open end 201 can be higher than that of the second open end 202 The horizontal height of the opening face of the . Thus, the openings of the first open end 201 and the second open end 202 are facing upwards, so that the medical solution in the medicine box of the drone can flow out from the U-shaped pipe 20, it is necessary to make the liquid medicine in the medicine box of the drone The liquid level is higher than the height of the second opening end 202 , but in practice, the liquid level of the medical solution rarely reaches this height, so this can more effectively prevent the splashing or leakage of the medical solution.

As shown in FIG. 1 , the valve channel may include a sub-channel 103 extending vertically, and the lower end opening of the sub-channel 103 is formed as an inner opening 102 . The U-shaped tube 20 may include a first vertical tube segment 21 , a second vertical tube segment 22 and an arc tube 23 . The upper end of the first vertical pipe section 21 can be formed as a first open end 201, and the first open end 201 can be inserted into the sub-channel 103, that is, the first open end 201 extends into the sub-channel 103 through the inner opening 102, The valve passage can be communicated with the first open end 201 . The upper end of the second vertical pipe section 22 may be formed as a second open end 202 .

The arc tube 23 can connect the lower end of the first vertical tube section 21 and the lower end of the second vertical tube section 22. Specifically, the arc tube 23 is roughly formed in a U-shape with an upward opening, and the middle part of the arc tube 23 protrudes downward. The two ends of the arc pipe 23 extend upwards, one end links to each other with the lower end of the first vertical pipe section 21, and the other end links to each other with the lower end of the second vertical pipe section 22, so that the first vertical pipe section 21, the arc pipe section 23 and the second vertical pipe section The two vertical pipe sections 22 can be successively connected to form a U-shaped pipe 20 with a smooth transition.

When injecting medicine into the medicine box of the drone, the gas inside the medicine box of the drone can pass through the second vertical pipe section 22, the arc pipe 23, the first vertical pipe section 21 and the valve body 10 in turn, and the gas can be passed through the outer opening 101. Outflow to the outside world; when the medicine box of the drone is discharging the medicine, the outside air can flow in reverse, and flow into the medicine box of the drone from the opening of the second opening end 202, and the air flow is smooth.

According to some embodiments of the present invention, the valve 100 can also include a pipe clip 30, which can be connected to the valve body 10, and the pipe clip 30 can be provided with a first installation hole 301 and a second installation hole 302 that penetrate up and down. An open end 201 can be inserted into the first mounting hole 301 , and the second open end 202 can be inserted into the second mounting hole 302 . Thus, the U-shaped tube 20 can be further fixed by the tube clamp 30, so that the installation of the U-shaped tube 20 is more accurate and firm, and ensures the smooth outflow of the gas and avoids the outflow of the liquid medicine.

The structure of pipe clamp 30 can be formed into various, as shown in Figure 3, in some embodiments of the present invention, pipe clamp 30 can be formed into L shape and can comprise vertical clip section 31 and horizontal clip section 32, namely vertical The straight clamping section 31 and the horizontal clamping section 32 can be connected to form an L shape. The first installation hole 301 can be provided in the vertical clip section 31, and the first installation hole 301 can pass through the upper surface and the lower surface of the vertical clip section 31, and the vertical clip section 31 can be inserted in the sub-channel 103; A second installation hole 302 may be defined in the section 32, and the second installation hole 302 may pass through the upper surface and the lower surface of the horizontal clamp section 32, and the upper surface of the horizontal clamp section 32 may be spaced apart from the lower surface of the valve body 10 to prevent When the second opening end 202 is inserted into the second installation hole 302 , the horizontal clip section 32 contacts the valve body 10 , thereby affecting the communication between the inside of the drone medicine box and the second opening end 202 . The pipe clip 30 of this structure is convenient to manufacture and assemble, and has a good fixing effect on the U-shaped pipe 20 .

Optionally, as shown in FIG. 5 , a guide surface 310 may be formed on the outer peripheral surface of the upper end of the vertical clamping section 31 , and the guide surface 310 is formed as a slope extending downward and outward relative to the vertical direction. Therefore, the radial dimension of the upper end of the vertical clip section 31 is relatively small, and it is easier to insert into the inner opening 102 of the valve body 10, and the guide surface 310 can play a guiding role when the vertical clip section 31 is assembled with the valve body 10, It is easy and quick to assemble the pipe clamp 30 and the valve body 10 .

As shown in Figure 5, a notch 303 communicating with the second mounting hole 302 may be provided on the horizontal clip section 32, the notch 303 is located at one end of the horizontal clip section 32 away from the vertical clip section 31, and the notch 303 may pass through the horizontal clip The upper and lower surfaces of segment 32. That is to say, a notch 303 can be provided at the end of the horizontal clamping section 32 that is not connected with the vertical clamping section 31 , the notch 303 is connected to the second installation hole 302 , and the notch 303 penetrates the horizontal clamping section 32 up and down. Thus, one end of the horizontal clip section 32 used to fix the second open end 202 can be roughly formed into a claw-shaped structure, which can increase the elasticity of the side wall of the second mounting hole 302, and not only facilitate the connection with the second open end 202 Assembling, and better fixing effect on the second open end 202 can be achieved.

In some specific embodiments of the present invention, the pipe clamp 30 is formed as a single piece, that is, the horizontal clamping section 32 and the vertical clamping section 31 are integrally formed. As a result, not only is it convenient to manufacture and the assembling process is simplified, but also the overall structural strength is guaranteed to make the valve 100 less likely to be damaged.

It can be understood that the structure of the valve body 10 can be formed in various forms. As shown in FIGS. 1 to 4 , the valve body 10 can include a valve core 11 and a valve cover 12 . A valve passage may be defined inside the valve core 11 , and both the inner opening 102 and the outer opening 101 are disposed on the valve core 11 . The valve cover 12 can be sleeved on the valve core 11 and screwed with the drone medicine box, and the second open end 202 can be set apart from the valve cover 12 and the valve core 11 . Therefore, it is not only easy to manufacture, but also can ensure the tightness of the valve channel, and when installing the valve 100 on the medicine box of the drone, it is only necessary to put the U-shaped tube 20 inwards aligned with the air hole, and then tighten the valve cover 12, the valve 100 is easy to install and operate.

1 to 7, the spool 11 may include a spool body 111 and a fixing nut 112, a valve channel may be defined in the spool body 111, and a stopper may be provided on the outer peripheral surface of the upper part of the spool body 111. 106, the stopper 106 protrudes outward from the outer surface of the lower part of the spool body 111, the outer peripheral surface of the lower part of the spool body 111 can be provided with external threads 107, and the fixing nut 112 can be sleeved on the outer surface of the spool body 111. The lower part, and the thread of the fixing nut 112 can cooperate with the external thread 107 of the valve core body 111 , so that the valve core body 111 can be threadedly connected with the fixing nut 112 . The bonnet 12 can be sleeved on the spool body 111 and can stop between the stop portion 106 and the fixing nut 112 . Therefore, it is convenient to manufacture and disassemble, and the assembly structure is relatively firm.

In order to prevent the valve 100 from leaking, optionally, as shown in FIGS. between the nuts 112. Thus, the sealing performance of the connection between the valve core body 111 , the valve cover 12 and the fixing nut 112 can be effectively improved, and the water leakage prevention performance of the valve 100 can be improved.

As shown in Fig. 1, Fig. 2 and Fig. 6, the valve cover 12 may include a top wall 121 and an annular wall 122, the middle part of the top wall 121 may be recessed downwards to form an accommodating groove 104, and the bottom wall of the accommodating groove 104 may be provided with a mounting The through hole 105 , the valve core 11 can pass through the installation through hole 105 , and the upper part of the valve core 11 can be located in the receiving groove 104 , and the lower part of the valve core 11 can protrude downward from the valve cover 12 . Thus, the valve cover 12 can surround the valve core 11 from the periphery, effectively protecting the valve core 11 .

The annular wall 122 can be connected to the outer periphery of the top wall 121 and extend downwards. wall) can be spaced apart to form a gap, and the inner peripheral surface of the annular wall 122 can be provided with an internal thread 108, and the internal thread 108 can cooperate with the screw thread on the medicine box of the drone, so that the valve cover 12 can be connected with the medicine box of the drone. The box is threaded.

In addition, in order to improve the sealing performance of the connection between the valve cover 12 and the medicine box of the drone, as shown in Figure 1 and Figure 2, a sealing ring 40 can be arranged in the gap between the annular wall 122 and the inner peripheral wall of the receiving groove 104, the sealing ring 40 can stop against the top wall surface of the gap, and can stop against the part of the unmanned aerial vehicle medicine box protruding into the gap, so as to not only improve the sealing performance of the connection, but also provide a certain degree of elasticity to prevent the valve cover 12 from The medicine box of the drone is over-tightened, resulting in damage. Optionally, the sealing ring 40 may be made of rubber material or silicone material.

1 to 4, the outer peripheral surface of the valve core 11 and the outer peripheral wall of the receiving groove 104 can be spaced apart, and the outer opening 101 can include a plurality of outer openings 101 can be set at intervals along the circumferential direction of the valve core 11. on the outer peripheral surface of the spool 11. Thus, while the valve cover 12 protects the valve core 11 , it does not affect the gas in and out of the valve 100 , and the gas flows smoothly.

1 to 7 show a specific example of a valve 100 for a drone medicine box according to an embodiment of the present invention. Referring to FIGS. 1 to 7 , the valve 100 includes a valve core 11 , a valve cover 12 , a U-shaped pipe 20 , a pipe clamp 30 and the like. The spool 11 is integrally formed with a large upper end and a smaller lower end. The upper large end is a bonnet, the lower small end is a spool, and the lower end surface of the bonnet can form a stopper. The spool is formed into a cylindrical shape as a whole, with a sub-channel 103 inside and an external thread 107 on the outer peripheral surface; the cross section of the bonnet is roughly formed as a regular hexagon, and the connection between two adjacent sides of the bonnet can be inverted. For angular transition, an outer opening 101 may be provided on the outer peripheral surface of the bonnet, and the outer opening 101 communicates with the inner opening 102 through a valve channel. There can be multiple outer openings 101, and the plurality of outer openings 101 are spaced apart from each other. A support block is provided between two adjacent outer openings 101. The position of the support block just faces the chamfers on two adjacent sides. answer.

As shown in Figures 1 and 6, the middle part of the bonnet 12 is recessed downwards to form an accommodation groove 104 for accommodating the bonnet. The bottom wall of the accommodation groove 104 is provided with an installation through hole 105, and the valve post is passed through the installation through hole 105. . The cross-section of the sub-channel 103 may be formed in a circular shape, and the outer peripheral surface of the vertical clip section 31 of the pipe clip 30 may be formed in a circular shape adapted to the shape of the sub-channel 103 . When the pipe clip 30 is assembled with the valve body 10 , the outer peripheral surface of the vertical clip section 31 can be attached to the inner peripheral surface of the sub-channel 103 .

As shown in FIG. 6 , the outer peripheral surface of the annular wall 122 of the valve cover 12 may be provided with a plurality of grooves spaced along its circumference and extending axially. Therefore, not only the appearance is beautiful, but also the rotation operation is convenient. As shown in FIG. 7 , the cross section of the fixing nut 112 is roughly formed as a regular hexagon, and the end surface and the side surface of the fixing nut 112 can be connected by a smooth surface.

The drone medicine box according to the embodiment of the present invention may include the valve 100 for the drone medicine box according to the embodiment of the present invention. The valve 100 can be installed on the air hole of the medicine box of the drone, so as to achieve better ventilation and anti-leakage effects.

Other configurations and operations of the drone medicine box according to the embodiment of the present invention are known to those of ordinary skill in the art, and will not be described in detail here.

In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", The orientations or positional relationships indicated by "inner", "outer", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature indirectly through an intermediary. touch.

In the description of this specification, descriptions with reference to the terms "embodiment", "specific embodiment", "example" or "specific example" mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example include In at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (11)

1. A valve for an unmanned aerial vehicle medicine box, comprising: A valve body suitable for being connected to the medicine box of the drone, wherein a valve channel is defined in the valve body, and the valve channel has an outer opening and an inner opening; A U-shaped tube suitable for being arranged in the medicine box of the drone, the U-shaped tube has a first open end and a second open end, the first open end fits in the inner opening, and the second open end Two open ends are arranged in the medicine box of the drone and are arranged adjacent to the lower surface of the valve body, wherein the valve body includes: a valve core and a valve cover, the valve core defines the valve channel, The second open end is spaced apart from the bonnet and the spool, the spool includes: a spool body and a fixing nut, the valve channel is defined in the spool body, and the spool body The outer peripheral surface of the upper part is provided with an outwardly protruding stopper, the outer peripheral surface of the lower part of the valve core body is provided with external threads, and the fixing nut is sleeved and threadedly connected to the lower part of the valve core body , the bonnet is sleeved on the spool body and is stopped between the stopper and the fixing nut, the bonnet is provided with a receiving groove, and the bottom wall of the receiving groove is provided with The installation through hole, the valve core is passed through the installation through hole and the upper part of the valve core is located in the accommodating groove, the outer peripheral surface of the upper part of the valve core is spaced from the outer peripheral wall of the accommodating groove , the outer opening is arranged on the outer peripheral surface of the valve core. 2. The valve according to claim 1, characterized in that, the opening end surface of the first opening end and the opening end surface of the second opening end are respectively formed as a plane parallel to the horizontal plane and the opening end surface of the first opening end The horizontal height is higher than the horizontal height of the open end face of the second open end. 3. The valve according to claim 1, wherein the valve channel comprises a sub-channel extending vertically, and the U-shaped tube comprises: a first vertical pipe section, the upper end of the first vertical pipe section is formed as the first open end and is inserted into the sub-channel; a second vertical pipe section, the upper end of the second vertical pipe section is formed as the second open end; an arc-shaped pipe, the arc-shaped pipe connects the lower end of the first vertical pipe section and the lower end of the second vertical pipe section. 4. The valve according to claim 3, further comprising: a pipe clip, the pipe clip is connected to the valve body, and the first installation hole and the second installation hole that penetrate up and down are provided in the pipe clip. hole, the first open end is inserted into the first installation hole, and the second open end is inserted in the second installation hole. 5. The valve according to claim 4, wherein the pipe clamp is formed in an L shape and includes a vertical clamp section and a horizontal clamp section, the first mounting hole is provided in the vertical clamp section and Inserted in the sub-channel, a second installation hole is defined in the horizontal clip section, and the upper surface of the horizontal clip section is spaced apart from the lower surface of the valve body. 6. The valve according to claim 5, characterized in that, one end of the horizontal clamping section away from the vertical clamping section is provided with a notch communicating with the second installation hole, and the notch passes through the horizontal clamping section. The upper and lower surfaces of the clip segment. 7. The valve according to any one of claims 1-6, wherein the valve cover is threadedly connected with the medicine box of the drone. 8 . The valve according to claim 1 , further comprising: a sealing ring, the sealing ring is sleeved on the valve core body and stops between the valve cover and the fixing nut. 9 . 9. The valve of claim 1, wherein said valve cover comprises: a top wall, the middle part of the top wall is recessed downwards to form the receiving groove; An annular wall, the annular wall is connected to the outer peripheral edge of the top wall and extends downward, the inner peripheral surface of the annular wall is spaced apart from the inner peripheral wall of the receiving groove to form a gap, and the inner peripheral surface of the annular wall The surface is provided with an internal thread suitable for threaded connection with the medicine box of the drone. 10. The valve according to claim 9, characterized in that, the outer openings include a plurality of outer openings arranged at intervals along the circumferential direction of the valve core on the outer peripheral surface of the upper part of the valve core . 11. An unmanned aerial vehicle medicine box, characterized in that it comprises the valve for the unmanned aerial vehicle medicine box according to any one of claims 1-10.