CN111344226A

CN111344226A - Water tank and unmanned aerial vehicle

Info

Publication number: CN111344226A
Application number: CN201880068380.9A
Authority: CN
Inventors: 周万仁; 周乐; 卢绰莹
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2020-06-26
Also published as: WO2020107194A1

Abstract

A water tank (10) and a drone (100), the water tank (10) comprising: the valve control device comprises a box body (1) and a valve control assembly (2) communicated with a containing cavity in the box body (1), wherein the valve control assembly (2) comprises a valve shell (21) and a sealing element (22) assembled in the valve shell (21); wherein the sealing member (22) cooperates with the valve housing (21) to place the valve control assembly (2) in a sealed state; or the sealing member (22) is separated from the valve shell (21) under the action of external force so as to enable the valve control assembly (2) to be in an opening state. Be equipped with valve accuse subassembly (2) on this water tank (10), can realize the quick dismantlement of water tank (10) to for water tank (10) liquid feeding more conveniently, can greatly improve the operating efficiency.

Description

Water tank and unmanned aerial vehicle

Technical Field

The invention relates to the technical field of water tanks, in particular to a water tank and an unmanned aerial vehicle.

Background

The water tank serves as a container for receiving the liquid, and the existing water tank is usually fixed to the application device. So, user's dismouting water tank convenient and fast inadequately needs with the help of other instruments to can't carry out operations such as liquid feeding for the water tank conveniently, greatly reduced the operating efficiency.

Disclosure of Invention

The invention provides a water tank capable of being disassembled quickly and an unmanned aerial vehicle, and aims to solve the technical problem.

According to a first aspect of embodiments of the present invention, there is provided a water tank including: the valve control assembly comprises a valve shell and a sealing element assembled in the valve shell;

wherein the seal member cooperates with the valve housing to place the valve control assembly in a sealed condition; or the sealing member is separated from the valve housing under the action of external force so as to enable the valve control assembly to be in an open state.

According to a second aspect of the embodiments of the present invention, there is provided an unmanned aerial vehicle, including: the water tank comprises a rack, a rack base arranged on the rack and the water tank as described in any one of the above items; when the water tank is assembled on the rack, the rack base abuts against a sealing element of the valve control assembly in the water tank, so that the valve control assembly is in an open state.

The invention designs a water tank and an unmanned aerial vehicle with the water tank, wherein the water tank is provided with an initially sealed valve control assembly, and the valve control assembly acts on a sealing element through external force in the assembling process to enable the valve control assembly to be in an open state, so that the water tank is communicated with an assembling carrier after being assembled, the requirement that the water tank can be rapidly disassembled is met, liquid can be conveniently added into the water tank, and the operation efficiency can be greatly improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic cross-sectional view of a water tank shown in an exemplary embodiment of the invention;

FIG. 2 is an enlarged view, partially in cross-section, of a water tank shown in an exemplary embodiment of the invention;

FIG. 3 is a schematic illustration of a valve housing in a water tank according to an exemplary embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating a seal in a tank according to an exemplary embodiment of the present invention;

fig. 5 is a schematic structural diagram of a drone according to an exemplary embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a drone in accordance with an exemplary embodiment of the present invention;

fig. 7 is an enlarged view, partially in section, of an unmanned aerial vehicle according to an exemplary embodiment of the present invention;

fig. 8 is a cross-sectional view of a base of a drone midframe in accordance with an exemplary embodiment of the present invention.

Description of reference numerals:

the water tank 10, the box body 1, the upper box body 11, the lower box body 12, the valve control assembly 2, the valve housing 21, the main housing 211, the inner housing 212, the assembly section housing 213, the main housing seal ring 214, the assembly seal ring 215, the sealing member 22, the valve core 221, the sealing portion 222, the limiting portion 223, the elastic member 224, the matching portion 225, the plug main body 2221, the lock fitting 2222, the plug seal ring 2223, the sealing gasket 2224, the pipeline 13, the carrying handle 14, the liquid injection port 15, the liquid level meter 16, the unmanned aerial vehicle 100, the frame 101, the foot stool 102, the mounting seat 3, the frame base 4, the mounting groove 42, the abutting piece 43 and the positioning.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The water tank and the unmanned aerial vehicle are described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

As shown in fig. 1, a water tank 10 according to an embodiment of the present invention includes a tank body 1 and a valve assembly 2 communicating with a receiving chamber in the tank body 1, the valve assembly 2 being used to control the water tank 10 to communicate with or block an assembly carrier. By adding the valve control assembly 2 to the water tank 10, the requirement that the water tank 10 is detachably assembled on an assembly carrier is met, so that the water tank 10 is conveniently detached for operations such as liquid adding and the like.

In this embodiment, this assembly carrier is unmanned aerial vehicle, and the water tank is applied to in the unmanned aerial vehicle so that unmanned aerial vehicle has the function of spraying, and specifically this unmanned aerial vehicle can be plant protection unmanned aerial vehicle. Of course, the water tank 10 of the present invention is not limited to use in an unmanned aerial vehicle, and other devices requiring the use of a water tank may use the water tank 10 of the present invention. The following embodiments describe the assembly carrier in detail by taking an unmanned aerial vehicle as an example.

As shown in fig. 1 and 2 in conjunction with fig. 6, the valve control assembly 2 includes a valve housing 21 and a sealing member 22 fitted in the valve housing 21, wherein the sealing member 22 is movable relative to the valve housing 21 by an external force. Alternatively, the seal member 22 is movable in the direction of the central axis of the valve housing 21. Wherein the sealing member 22 cooperates with the valve housing 21 to place the valve control assembly 2 in a sealed state; or the sealing member 22 is disengaged from the valve housing 21 by an external force to place the valve control assembly 2 in an open state. In this embodiment, the valve control assembly 2 is initially configured such that the sealing member 22 blocks the water flow passage in the valve housing 21 to keep the valve control assembly 2 in a sealed state; when the water tank 10 is assembled to the drone 100, the sealing member 22 is acted on by the components of the drone 100 to disengage the sealing member 22 from the valve housing 21, thereby placing the valve control assembly 2 in an open state, such that the water tank 10 communicates with the flow passage in the frame 101 of the drone 100 after being assembled to the frame 101.

As shown in fig. 2 and 3, the valve housing 21 includes a main housing 211 and an inner housing 212 disposed in the main housing 211 and partially fixed to the main housing 211, the inner housing 212 is disposed at a middle position of the main housing 211, and the inner housing 212 may be integrally formed with the main housing 211. A flow passage is formed between the inner housing 212 and the main housing 211, and the sealing member 22 is inserted through the inner housing 212, so that the sealing member 22 is suspended in the valve housing 21. Specifically, the sealing member 22 is disposed through the inner housing 212 and can move along the axial direction of the central axis of the inner housing 212.

As shown in fig. 2 and 4, the sealing member 22 of the present invention includes a valve body 221, a sealing portion 222 provided at one end of the valve body 221, and a stopper portion 223 provided at the other end of the valve body 221. The valve core 221 is cylindrical or strip-shaped, the valve core 221 is assembled in the inner housing 212 and can slide relative to the inner housing 212, and specifically, the valve core 221 moves along the axial direction of the central axis of the inner housing 212. The sealing portion 222 is adapted to the upper end portion of the main housing 211 to close or open a water flow passage in the main housing 211, and the stopper portion 223 is adapted to cooperate with the inner housing 212 to limit the moving range of the sealing member 22.

The surface of the upper end of the main housing 211 facing the sealing portion 222 includes a slope inclined from top to bottom toward the central axis of the sealing portion 222. Correspondingly, the sealing portion 222 has a width decreasing from top to bottom in a direction toward the limiting portion 223, so that the sealing portion 222 is guided and assembled in the main housing 211, and the sealing portion 222 and the upper end portion are more tightly assembled during the assembling process.

The sealing portion 222 of the present invention is detachably assembled to the valve body 221, and the stopper portion 223 may be integrally formed with the valve body 221. Is detachably fitted to the valve core 221 through the sealing portion 222 so as to fit the seal 22 in the main housing 211 and be restricted to the inner housing 212.

In one embodiment, the sealing portion 222 includes a plug body 2221, a locking fitting 2222, and a plug sealing ring 2223 disposed on the periphery of the plug body 2221. The plug body 2221 is connected to the valve body 221 through a locking fitting 2222. Specifically, a connection hole is formed in the plug body 2221, a threaded hole is formed at an end of the valve element 221, and the locking fitting 2222 is a screw. When the sealing part 222 is assembled to the valve body 221, the valve body 221 is assembled from the lower end of the connection hole, a screw is assembled from the upper end of the connection hole and is screwed to the valve body 221, and a gasket 2224 is provided at the fitting position of the nut of the screw and the plug body 2221 to prevent water leakage at the connection position of the sealing part 222 and the valve body 221. In another embodiment, the sealing portion 222 is a sealing plug with an internal thread, and the end of the valve element 221 is provided with a thread, and the sealing plug is connected with the thread of the valve element 221 in a sealing manner through the internal thread.

Of course, in other embodiments, the sealing portion 222 may be integrally formed with the valve element 221, and the stopper portion 223 may be detachably mounted on the valve element 221; the sealing part 222 and the limiting part 223 are detachably assembled on the valve core 221; or the sealing portion 222 and the limiting portion 223 are integrally formed with the valve core 221, which is also satisfactory for facilitating the assembly of the sealing member 22 in the main housing 211 and limiting on the inner housing 212.

As shown in fig. 2 and 4 in conjunction with fig. 6 to 8, one end of the limiting portion 223 opposite to the valve core 221 is further provided with a matching portion 225, and when the water tank 10 is assembled on the frame 101 of the unmanned aerial vehicle 100, the positioning portion 431 on the frame 101 is pre-positioned in a matching manner with the matching portion 225, so that acting force can be completely applied to the sealing member 22, and accurate control of the sealing member 22 is realized. Specifically, the matching portion 225 may be a groove, and the positioning portion 431 is a protrusion matching with the groove, or the matching portion 225 is a protrusion, and the positioning portion 431 is a groove.

Further, the valve control assembly 2 further includes an elastic member 224 disposed between the limiting portion 223 and the inner housing 212. When the sealing portion 222 is separated from the main housing 211, the valve control assembly 2 is in an open state, and the elastic member 224 is compressed and forms a restoring force to restore the valve control assembly 2 to the sealing state.

In this embodiment, the elastic element 224 is a spring sleeved on the valve element 221, and the spring is limited between the inner housing 212 and the limiting portion 223. When the spring is in an initial state (i.e. a state when the spring is not applied with external force), the sealing member 22 is matched and sealed with the valve housing 21; when the valve control assembly 2 is in the open state, the spring is in a compressed state, and when the external force is removed, the spring urges the sealing member 22 to return to a sealing state in which it engages the valve housing 21. Of course, in other embodiments, the elastic element 224 may also be a rubber ring, a plastic ring, or a corrugated tube sleeved on the valve core 221, and the elastic element 224 may also be an elastic sheet connected between the inner housing 212 and the limiting portion 223.

The valve control assembly 2 may be disposed at the bottom of the tank 1, and the liquid of the tank 1 may flow toward the mounting carrier under the pressure of the liquid. Of course, according to the requirement of structural features, the valve control assembly 2 can also be arranged on the side surface of the tank body 1, and after the water tank 10 is communicated with the assembly carrier, the liquid in the water tank 10 can flow to the assembly carrier through the action of the water pump. As shown in fig. 1 and 2, in the embodiment in which the valve control assembly 2 is disposed on the side of the tank 1, the tank 1 includes an upper tank 11 and a lower tank 12 that are communicated with each other, and the upper tank 11 partially protrudes out of the lower tank 12, that is, the upper tank 11 has a transverse dimension larger than that of the lower tank 12, so as to be designed to allow the water tank 10 to be fitted to the frame 101 of the drone 100. Wherein the valve control assembly 2 is disposed in a space below the upper case 11 protruding from the lower case 12.

The tank 10 of the present invention further comprises a level gauge 16 disposed in the tank body 1, and the volume of the liquid in the tank 10 can be known by the level gauge 16. In this embodiment, the liquid level meter 16 is provided in two, one in the upper case 11 and one in the lower case 12. Of course, in order to more accurately obtain the liquid capacity, a greater number of level meters 16 may be provided in the upper tank 11 and the lower tank 12.

The tank 10 also comprises a pipe 13. Wherein, one end of the pipeline 13 is communicated with the valve control component 2, and the other end is communicated with the bottom of the box body 1 so as to be communicated with the containing cavity in the box body 1. In this embodiment, communicate the one end of pipeline 13 in the bottom of box 1, can make the liquid in the box 1 all flow out, avoid partial liquid to remain in box 1 all the time.

Correspondingly, the tank 10 further comprises a mounting seat 3 connected to the pipeline 13 and the valve control assembly 2, wherein the mounting seat 3 is used for engagement so as to connect the pipeline 13 and the valve control assembly 2. Specifically, the mounting base 3 is of a U-shaped structure, and is fitted at a connecting corner of the upper case 11 and the lower case 12.

Correspondingly, as shown in fig. 3, the valve housing 21 further includes a mounting section housing 213 extending outward from the main housing 211, and the valve housing 21 is sealingly mounted to the mounting seat 3 through the mounting section housing 213. An assembly space is formed between the assembly section housing 213 and the upper end portion of the main housing 211, the assembly section housing 213 is provided with a screw thread and is assembled at one end of the mounting seat 3 by screw thread connection, and the other end of the mounting seat 3 is connected with the pipeline 13. Further, in order to enhance the sealing property between the valve housing 21 and the mounting seat 3, a mounting packing 215 is further provided in the mounting space.

As shown in fig. 5, the water tank 10 of the present invention further includes a pouring port 15 provided at the top of the tank body 1 and a lid body (not shown) attached to the pouring port 15, and the pouring port 15 is provided obliquely so as to facilitate the pouring of the water into the water tank 10. In addition, a carrying handle 14 is provided on the top of the tank body 1 of the water tank 10, and a user can easily detach, assemble and transport the water tank 10 by using the carrying handle 14.

The invention designs a plug-and-play water tank which is provided with an initially sealed valve control assembly. The water tank assembles in unmanned aerial vehicle's in-process, and the valve accuse subassembly is in the open mode under the effect of external force, and when the water tank breaks away from in unmanned aerial vehicle, the valve accuse subassembly can reply to encapsulated situation under elastic effect, so that accomplish the intercommunication with unmanned aerial vehicle promptly after the water tank assembly, realized the demand that the water tank can be dismantled fast to can be conveniently for the water tank liquid feeding, can greatly improve the operating efficiency.

As shown in fig. 5 to 8, according to a further aspect of the embodiment of the present invention, there is also provided a drone 100, the drone 100 including: a frame 101, a frame base 4 arranged on the frame 101, and a water tank 10 assembled to the frame 101. The water tank 10 is assembled to the housing 101 such that the water tank 10 communicates with the flow passage of the housing 101 by engaging with the housing base 4. The structure of the water tank 10 is as described in the above embodiments, and is not described herein again.

When the water tank 10 is assembled on the rack 101, the rack base 4 abuts against the sealing element 22 of the valve control assembly 2 in the water tank 10, so that the valve control assembly 2 is in an open state, and at the moment, the elastic element 224 is in a compressed state, so that the plug-and-play function of the water tank 10 is realized, and the water tank 10 is communicated with the flow channel on the rack 101 without regulation of other structures. When the case is detached from the frame 101, the valve-regulated assembly 2 returns to the sealing state under the action of the elastic member 224, so that the operation steps of the water tank 10 can be simplified, the convenience of the water tank 10 can be improved, and a user can conveniently detach the water tank 10 to fill the water tank 10.

The frame base 4 is provided with an installation groove 42, and a propping piece 43 is arranged in the installation groove 42. When the water tank 10 is assembled to the frame 101, the abutting piece 43 abuts against the sealing member 22 of the valve control assembly 2, so that the valve control assembly 2 is in an open state. A base runner is arranged in the frame base 4, and the abutting piece 43 is arranged in a hollow manner to communicate the mounting groove 42 with the runner on the frame 101. The notch of the mounting groove 42 is flared, so that the valve control assembly 2 is assembled on the frame base 4. In addition, in order to enhance the sealing performance of the valve control assembly 2 assembled with the frame base 4, a main casing seal ring 214 is further provided on the peripheral side surface of the lower end portion of the main casing of the valve control assembly 2.

The abutting member 43 is further provided with a positioning portion 431, and the positioning portion 431 is used for performing pre-positioning with the matching portion 225 on the sealing member 22, so that the force of the abutting member 43 is prevented from being exerted on the sealing member 22 completely. When the water tank 10 is assembled in the frame 101 of the unmanned aerial vehicle 100, the positioning part 431 on the frame 101 is matched and pre-positioned with the matching part 225, so that acting force can be completely applied to the sealing member 22, and accurate control over the sealing member 22 is realized. Specifically, the matching portion 225 may be a groove, and the positioning portion 431 is a protrusion matching with the groove, or the matching portion 225 is a protrusion, and the positioning portion 431 is a groove.

In addition, the drone 100 further comprises a foot rest 102 connected to the frame 101 and a plurality of rotor assemblies (not shown) connected to the frame 101, wherein the foot rest 102 is used for supporting and the rotor assemblies are used for controlling the flight of the drone 100. The unmanned aerial vehicle 100 of the present invention may be a plant protection unmanned aerial vehicle, and is used for agricultural pesticide spraying, water spraying, and the like.

When the water tank is placed independently, the valve control assembly enables the sealing element to be tightly pressed with the valve shell to be sealed under the action of the elastic element, and the water outlet of the water tank is sealed and does not leak liquid. When the water tank is assembled in the frame of the unmanned aerial vehicle, the supporting part on the frame supports against the sealing part, the elastic force of the elastic part in the valve control assembly is overcome at the moment to compress the elastic part, the sealing plug of the sealing part is separated from the valve shell to enable the valve control assembly to be in an open state, and thus, the water outlet of the water tank is opened, the water tank is communicated with the flow channel on the frame after being assembled, the requirement that the water tank can be rapidly disassembled is met, liquid can be conveniently added to the water tank, and the operation efficiency can be greatly improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The method and apparatus provided by the embodiments of the present invention are described in detail above, and the principle and the embodiments of the present invention are explained in detail herein by using specific examples, and the description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A water tank, comprising: the valve control assembly comprises a valve shell and a sealing element assembled in the valve shell;

2. The water tank of claim 1 wherein the valve housing includes a main housing and an inner housing disposed within the main housing and partially secured to the main housing, the inner housing and the main housing having a flow passage therebetween, the seal being disposed through the inner housing.

3. The water tank as claimed in claim 2, wherein the sealing member includes a valve core, a sealing portion provided at one end of the valve core, and a stopper portion provided at the other end of the valve core; the valve core is assembled in the inner shell and can slide relative to the inner shell, and the sealing part is suitable for the upper end part of the main shell to seal or open a water flow channel in the main shell.

4. The water tank as claimed in claim 3, wherein a surface of the upper end portion of the main housing facing the sealing portion includes a slope inclined toward an axial direction in the sealing portion from top to bottom.

5. The water tank as claimed in claim 3, wherein the sealing portion includes a stopper body, a lock fitting, and a seal ring provided on a circumferential side of the stopper body; the plug main body is connected to the valve core through the lock fitting.

6. The water tank of claim 3, wherein the valve assembly further comprises an elastic member disposed between the stopper portion and the inner housing; when the sealing part is separated from the main shell, the valve control assembly is in an opening state, and the elastic element is compressed and forms restoring force for restoring the valve control assembly to the sealing state.

7. The water tank of claim 1 wherein the valve assembly is disposed at the bottom of the tank.

8. The water tank of claim 2 wherein the valve control assembly is disposed on a side of the tank.

9. The water tank as claimed in claim 8, wherein the tank body comprises an upper tank body and a lower tank body communicating with each other, the upper tank body partially protrudes from the lower tank body, and the valve assembly is disposed in a space below the upper tank body protruding from the lower tank body.

10. The water tank of claim 8, further comprising a conduit; one end of the pipeline is communicated with the valve control assembly, and the other end of the pipeline is communicated with the bottom of the box body.

11. The water tank of claim 10 further comprising a mounting block connected to the piping and valve control assembly, the valve housing further comprising a mounting block housing extending outwardly from the main housing, the valve housing sealingly mounted to the mounting block by the mounting block housing.

12. An unmanned aerial vehicle, comprising: the water tank is arranged on the rack; the water tank comprises a tank body and a valve control assembly communicated with an accommodating cavity in the tank body, wherein the valve control assembly comprises a valve shell and a sealing element assembled in the valve shell;

wherein the seal member cooperates with the valve housing to place the valve control assembly in a sealed condition; when the water tank is assembled on the frame, the frame base abuts against the sealing element, so that the valve control assembly is in an opening state.

13. The unmanned aerial vehicle of claim 12, wherein the frame base defines an installation slot, and a retaining member is disposed within the installation slot; when the water tank is assembled on the rack, the abutting piece abuts against the sealing element of the valve control assembly, so that the valve control assembly is in an opening state.

14. The unmanned aerial vehicle of claim 13, wherein a base runner is provided in the frame base, and the abutting member is hollowed out to communicate the mounting groove with the base runner.

15. The drone of claim 12, wherein the valve housing includes a main housing and an inner housing disposed within the main housing and partially secured to the main housing, the inner housing and the main housing having a flow passage therebetween, the seal being disposed through the inner housing.

16. The drone of claim 15, wherein the seal includes a valve spool, a sealing portion disposed at one end of the valve spool, and a limit portion disposed at the other end of the valve spool; the valve core is assembled in the inner shell and can slide relative to the inner shell, and the sealing part is suitable for the upper end part of the main shell to seal or open a water flow channel in the main shell.

17. The drone of claim 16, wherein the surface of the upper end of the main housing facing the seal includes a ramp sloping from top to bottom in an axial direction in the seal.

18. The unmanned aerial vehicle of claim 16, wherein the seal portion comprises a plug body, a lock fitting, and a seal ring disposed on a circumferential side of the plug body; the plug main body is connected to the valve core through the lock fitting.

19. The drone of claim 16, wherein the valve control assembly further includes an elastic member disposed between the stop and the inner housing; when the sealing part is separated from the main shell, the valve control assembly is in an opening state, and the elastic element is compressed and forms restoring force for restoring the valve control assembly to the sealing state.

20. The drone of claim 12, wherein the valve control assembly is disposed at a bottom of the tank.

21. The drone of claim 15, wherein the valve control assembly is disposed on a side of the tank.

22. The unmanned aerial vehicle of claim 21, wherein the tank comprises an upper tank and a lower tank that are in communication with each other, the upper tank partially protrudes from the lower tank, and the valve control assembly is disposed in a space below the upper tank that protrudes from the lower tank.

23. The drone of claim 21, wherein the water tank further comprises a conduit; one end of the pipeline is communicated with the valve control assembly, and the other end of the pipeline is communicated with the bottom of the box body.

24. The drone of claim 23, wherein the water tank further includes a mounting seat connected to the piping and the valve train assembly, the valve housing further including a mounting segment housing extending outwardly from the main housing, the valve housing sealingly mounted to the mounting seat by the mounting segment housing.