CN220023952U

CN220023952U - A sprinkler equipment and plant protection unmanned aerial vehicle for plant protection

Info

Publication number: CN220023952U
Application number: CN202320631132.9U
Authority: CN
Inventors: 陈亮; 黄伟波; 彭斌; 何建兵
Original assignee: Guangzhou Xaircraft Technology Co Ltd
Current assignee: Guangzhou Xaircraft Technology Co Ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-11-17
Anticipated expiration: 2033-03-27

Abstract

The utility model discloses spraying equipment for plant protection and a plant protection unmanned aerial vehicle, and belongs to the technical field of plant protection equipment. According to the utility model, the bidirectional pump is adopted as the liquid pump, the liquid pump is controlled to rotate forward through the controller to perform spraying operation, and the liquid pump is controlled to rotate reversely to perform liquid adding operation, so that automatic liquid adding can be realized, the labor intensity of workers is reduced, and the liquid adding efficiency is improved; the user need not carry a separate pumping mechanism when working outdoors. And, can control its liquid pump based on sprinkler's controller, can carry out more intelligent control to sprinkler's liquid feeding operation through control terminal according to specific liquid feeding demand, can realize quantitative filling according to the user demand under the prerequisite that does not increase extra measuring tool, improve the accuracy of liquid feeding, avoid adding more liquid and lead to extravagant, or avoid adding the condition that needs many times liquid feeding less.

Description

A sprinkler equipment and plant protection unmanned aerial vehicle for plant protection

Technical Field

The utility model relates to the technical field of plant protection equipment, in particular to spraying equipment for plant protection and a plant protection unmanned plane.

Background

In the field of agricultural equipment and the like, liquid medicine or other liquid is sprayed to a target area through spraying equipment so as to meet the liquid output requirement. When the liquid medicine or other liquid in the spraying equipment is used up, new liquid is manually supplemented into the spraying equipment, so that the liquid addition and supplement of the spraying equipment are realized, and the manual liquid adding mode is low in efficiency and high in labor intensity.

The spraying equipment can be applied to plant protection unmanned aerial vehicle, in order to satisfy plant protection unmanned aerial vehicle's liquid feeding demand, and liquid medicine quantity is big when plant protection unmanned aerial vehicle operation, generally all pour into multiple liquid in advance in a big confession liquid bucket in advance and mix to in time to spraying equipment liquid feeding. However, a vat of liquid stirred well in advance is very heavy, and operating personnel need with the help of the small container, pours the liquid in the big confession liquid vat into plant protection unmanned aerial vehicle's stock solution container a plurality of times, carries out the liquid feeding, and this kind of liquid feeding mode consumes physical power, and the liquid feeding is efficient, and operating personnel often contacts pesticide and has the influence to healthy.

Disclosure of Invention

The embodiment of the utility model aims at: the utility model provides a sprinkler and plant protection unmanned aerial vehicle for plant protection carries out the drawing liquid through the liquid pump reversal that sprinkler was taken certainly, realizes adding outside liquid medicine to sprinkler inside, need not to use outside liquid pump and can realize automatic liquid feeding, improves liquid feeding efficiency, control liquid feeding effect.

A spraying device for plant protection comprises a liquid storage container, a liquid pump, a spraying device and a controller; the liquid storage container is connected with the liquid pump, the liquid pump can be connected with the spraying device through a liquid supply channel, and the liquid pump can be connected with the infusion tube through a liquid supplementing channel;

The liquid pump is a bidirectional pump, and the liquid pump is connected with the controller; the controller is used for controlling the forward rotation or the reverse rotation of the driver of the liquid pump; when the driver of the liquid pump rotates positively, the liquid pump conveys the liquid in the liquid storage container to the spraying device through the liquid supply channel; when the drive of the liquid pump is reversed, the liquid pump conveys liquid outside the spraying device from the liquid replenishing channel to the liquid storage container.

Optionally, the device comprises a liquid level sensor, wherein the liquid level sensor is installed on the liquid storage container and is used for detecting the liquid amount in the liquid storage container; the liquid level sensor is connected with the controller, and the controller is used for receiving liquid amount information sent by the liquid level sensor.

Optionally, the spraying device comprises a three-way joint comprising a first main pipe portion, a second main pipe portion and a third main pipe portion; the first main pipe part is connected with the liquid pump, the second main pipe part is connected with the spraying device, and the third main pipe part is used for being connected with an infusion tube.

Optionally, the infusion tube comprises an infusion tube section and a quick release connector connected with the infusion tube section;

The three-way joint is provided with a liquid supply channel and a liquid supplementing channel; the three-way joint is provided with a liquid supply using state that the liquid supply channel is opened and the liquid supplementing channel is closed, and is provided with a liquid supplementing using state that the liquid supplementing channel is opened and the liquid supply channel is closed;

when the quick-release connector is in butt joint with the third main pipe part, the quick-release connector acts on the three-way connector to enable the three-way connector to be in the fluid infusion state, and the infusion pipe is communicated with the fluid reservoir through the fluid infusion channel; when the quick-dismantling joint is separated from the third main pipe part, the three-way joint is in the liquid supply using state, and the liquid storage container is communicated with the spraying device through the liquid supply channel.

Optionally, the infusion tube comprises a filter, and the filter is connected with one end of the infusion tube section, which is away from the quick release connector.

Optionally, the three-way joint comprises a main pipe body, a first self-plugging head and a first resetting piece;

the main tube body includes a first main tube portion, a second main tube portion, and a third main tube portion; the first main pipe portion comprises a first pipe orifice, the second main pipe portion comprises a second pipe orifice, and the third main pipe portion comprises a third pipe orifice; the third main pipe part is provided with a first limiting part;

The first self-plugging head is movably arranged in the third main pipe part; the first self-plugging head is provided with a first position and a second position; when the first self-plugging head is positioned at the first position, the first self-plugging head is abutted against the first limiting part and seals the third pipe orifice, and the first pipe orifice is communicated with the second pipe orifice; when the first self-plugging head is positioned at the second position, the first self-plugging head seals a communication channel between the first pipe orifice and the second pipe orifice, and the first pipe orifice is communicated with the third pipe orifice; the first reset piece is arranged on the main pipe body;

when the quick-release connector is in butt joint with the third main pipe part, the first self-plugging head is positioned at the second position; when the quick-release connector is separated from the third main pipe part, the first self-plugging head returns to the first position under the action of the first resetting piece.

Optionally, the quick-release connector comprises a connector pipe body, a second self-plugging head and a second resetting piece; the joint pipe body comprises a first joint pipe orifice and a second joint pipe orifice which are oppositely arranged; the joint pipe body is provided with a second limiting part; the second self-plugging head is movably arranged in the joint pipe body; the second self-plugging head is provided with a closed position and an open position; when the self-plugging head is positioned at the closed position, the second self-plugging head is abutted against the second limiting part and seals the second joint pipe orifice; when in the open position, the first connector nozzle is communicated with the second connector nozzle; the second reset piece is arranged on the joint pipe body and is used for providing acting force for the second self-plugging head to move to the closed position;

When the quick-release connector is in butt joint with the third main pipe part, the second self-plugging head and the first self-plugging head are mutually propped against each other, the first self-plugging head is located at the second position, the second self-plugging head is located at the opening position, and the first connector pipe orifice is communicated with the first pipe orifice through the fluid supplementing channel.

Optionally, the liquid pump is a peristaltic pump.

A plant protection unmanned aerial vehicle comprises the spraying equipment.

Optionally, the plant protection unmanned aerial vehicle includes communication module, plant protection unmanned aerial vehicle accessible communication module and control terminal communication connection.

The beneficial effects of the utility model are as follows: this a sprinkler equipment and plant protection unmanned aerial vehicle for plant protection adopts the bi-directional pump as the liquid pump, and the liquid pump corotation can carry out the operation of spraying, and the liquid pump reversal can carry out the liquid feeding operation, can realize automatic liquid feeding, reduces artifical intensity of labour, improves liquid feeding efficiency, and the user need not to carry independent pumping mechanism when outdoor operation.

Drawings

The utility model is described in further detail below with reference to the drawings and examples.

FIG. 1 is a schematic illustration of a liquid feeding mode of a plant protection unmanned aerial vehicle according to an embodiment of the present utility model (in the figure, a liquid feeding pipe is in butt joint with a tee joint of a spraying device);

FIG. 2 is a schematic view of the unmanned aerial vehicle body, the infusion tube and the liquid supply barrel (in the figure, the infusion tube is separated from the three-way joint of the spraying device);

FIG. 3 is a schematic structural view of a spraying device applied to a plant protection unmanned aerial vehicle according to an embodiment of the present utility model;

FIG. 4 is a schematic view of an infusion tube according to an embodiment of the disclosure;

FIG. 5 is a schematic structural view of a three-way joint and a quick release joint in a separated state according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a three-way joint and a quick-release joint in a butt joint state according to an embodiment of the present utility model (in the drawings, a first self-plugging head is located at a second position, and a second self-plugging head is located at an open position);

fig. 7 is a schematic structural diagram of a three-way joint according to an embodiment of the present utility model (in which a first self-plugging head is located at a first position);

FIG. 8 is a schematic view showing the internal structure of a main pipe body of the three-way joint according to the embodiment of the present utility model;

fig. 9 is a schematic structural view of a quick-release connector according to an embodiment of the present utility model (in which a second self-plugging head is located at a closed position);

FIG. 10 is a schematic diagram of the quick release connector and the three-way connector according to the embodiment of the present utility model when they are detached (the arrows in the figure indicate the liquid supply waterway);

FIG. 11 is a schematic diagram of the quick release connector according to the embodiment of the present utility model when the quick release connector is docked with the three-way connector (the arrows in the figure indicate the fluid replacement waterway);

Fig. 12 is an enlarged view of a portion a in fig. 11;

FIG. 13 a) is a state diagram of the sleeve of the present utility model in a locked position;

FIG. 13 b) is a state diagram of the sleeve of the present utility model in an unlocked position;

FIG. 14 is a schematic diagram illustrating the connection between a plurality of modules when the plant protection unmanned aerial vehicle performs the liquid feeding operation according to the embodiment of the present utility model;

FIG. 15 a) is a schematic diagram illustrating the flow of the liquid medicine when the plant protection unmanned aerial vehicle performs the spraying operation according to the embodiment of the present utility model;

FIG. 15 b) is a schematic diagram illustrating a flow direction of the liquid medicine when the plant protection unmanned aerial vehicle performs the liquid feeding operation according to the embodiment of the present utility model;

FIG. 16 is a flow chart of a method of controlling priming according to an embodiment of the present utility model;

FIG. 17 is a schematic diagram of a liquid adding system for a plant protection unmanned aerial vehicle according to an embodiment of the present utility model;

in the figure: 100. an unmanned aerial vehicle main body; 200. an infusion tube; 300. a liquid supply barrel; 400. a control terminal; 10. a three-way joint; 101. a first nozzle; 102. a second nozzle; 103. a third nozzle; 104. a secondary pipe orifice; 105. an overcurrent gap; 11. a main pipe body; 111. a first main pipe portion; 112. a second main pipe portion; 113. a third main pipe portion; 12. a first limit part; 13. a first self-plugging head; 14. a first reset member; 15. an auxiliary pipe body; 151. a first sub-pipe portion; 152. a second auxiliary pipe portion; 20. quick-release connectors; 201. a first connector nozzle; 202. a second connector orifice; 21. a joint pipe body; 211. a first joint pipe section; 212. a second joint pipe section; 22. a second limit part; 23. a second self-plugging head; 24. a second reset member; 251. a sleeve; 252. a third reset member; 253. a fastening piece; 30. a mounting base; 41. a transfusion tube section; 42. a filter; 50. a liquid storage container; 60. a liquid pump; 70. a liquid level sensor; 80. and a load device.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "affixed" and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In fields such as agricultural field, intelligent house field, manufacturing, spray equipment is to target area spraying liquid to satisfy the liquid output demand. The agriculture refers to the fields of planting industry, forestry, fishery and the like. In the related art, the liquid medicine of the spraying equipment is filled in a manual adding mode or an external liquid adding device, however, the manual adding mode is low in efficiency and unfavorable for manual health, and a set of external liquid adding device is additionally added, so that the cost of the device is increased.

The plant protection equipment is equipment for agricultural and forestry plant protection operation, such as plant protection unmanned aerial vehicle and the like. The plant protection equipment is provided with the spraying equipment, so that spraying operation can be realized through the spraying equipment, medicines can be sprayed, and the like. The spraying equipment has been carried in the plant protection unmanned aerial vehicle, and in the related art, the plant protection unmanned aerial vehicle realizes the interpolation of the interior liquid medicine of unmanned aerial vehicle reservoir through manual feeding or external liquid feeding equipment liquid feeding's mode.

When the plant protection unmanned aerial vehicle works, the spraying efficiency is high, so that when the plant protection unmanned aerial vehicle works on site, operators need to introduce a plurality of liquid medicines into a large liquid supply barrel in advance and stir the liquid medicines uniformly, and medicine adding can be carried out when the plant protection unmanned aerial vehicle returns each time. However, this method of manually adding a chemical solution has several problems:

First, a vat of liquid medicine that stirs in advance is very heavy, and operating personnel can't directly lift up big confession liquid bucket and carry out unmanned aerial vehicle liquid feeding, and operating personnel needs to be with the help of the capsule, and in pouring plant protection unmanned aerial vehicle's stock solution container again into with the liquid scooping out of big confession liquid bucket many times, so, operating personnel intensity of labour is big to also spent and added medicine time, it is low to add the drug efficacy rate. Secondly, if the quantitative liquid medicine needs to be added into the liquid storage container of the plant protection unmanned aerial vehicle, an operator is required to use measuring tools such as a measuring cylinder to measure the liquid medicine and then add the liquid medicine into the plant protection unmanned aerial vehicle, and the drug adding efficiency is low. Thirdly, repeated adding operation increases the contact opportunity of operators and pesticides, and for some pesticides with toxicity to human bodies, the risk of harm to operators is increased, and long-term past, the operators have certain influence on the health of the human bodies; fourth, manual liquid feeding is inaccurate easily to lead to leaking liquid, extravagant and cause the pollution.

In the related art, a set of liquid adding equipment is added, and a liquid pump, a liquid tank, a controller and other devices are arranged in the liquid adding equipment so as to meet the liquid adding requirement of the spraying equipment. However, this method of adding a chemical solution has the following problems: firstly, a set of independent pumping system is needed to be configured on the basis of original plant protection equipment, so that the cost of the equipment is increased; secondly, the independent liquid pump is large in size, so that the user is inconvenient to carry when carrying out outdoor operation, liquid adding equipment needs to be moved when transferring, and inconvenience is caused when transferring and transporting.

Based on the above, in order to improve the liquid adding efficiency of the spraying equipment and control the equipment cost, the utility model provides the spraying equipment for the plant protection equipment, the plant protection unmanned aerial vehicle and a liquid adding control method. According to the utility model, under the condition that independent liquid adding equipment is not additionally arranged, the bidirectional liquid pump 60 of the spraying equipment is utilized to realize the functions of forward rotation spraying and reverse rotation liquid adding, so that on one hand, the participation of operators in a liquid adding link can be reduced, the labor intensity is reduced, the liquid adding efficiency is improved, the contact opportunity of the operators with pesticides is reduced, on the other hand, the liquid adding requirement can be met under the condition that excessive equipment is not additionally arranged, the cost input is reduced, and the transfer transportation is facilitated.

The liquid pump 60 is a bidirectional pump, and the forward rotation and the reverse rotation are only used to describe two opposite directions of movement, in other words, when the liquid pump 60 is rotated forward and the liquid pump 60 is rotated reverse, the direction in which the liquid pump 60 delivers liquid is reversed.

The forward rotation of the liquid pump 60 is opposite to the direction in which the liquid pump 60 delivers the liquid when the liquid pump 60 is reversed, and can be understood as follows: the drive of the liquid pump 60 may be rotated in a first direction or in a second direction; the first direction and the second direction are two directions opposite to the rotation direction. The liquid pump 60 is used to send out the liquid in the liquid storage container 50 when rotating forward, and is used to send out the external liquid into the liquid storage container 50 when rotating backward.

In one embodiment, the drive of the liquid pump 60 rotates in a forward direction, where the liquid pump 60 is used for supplying liquid, and in a reverse direction, where the liquid pump 60 is used for replenishing liquid. In another embodiment, the actuator of the liquid pump 60 is rotated in a reverse direction about a first direction, where the liquid pump 60 is used for replenishing liquid, and the actuator of the liquid pump 60 is rotated in a forward direction about a second direction, where the liquid pump 60 is used for supplying liquid.

With continued reference to fig. 1 to 16, a spraying apparatus for plant protection, a plant protection unmanned aerial vehicle, and a liquid feeding control method will be described. In this embodiment, the spraying equipment is applied to plant protection unmanned aerial vehicle. In other embodiments, the spraying device can also be applied to plant protection unmanned vehicles or other plant protection devices, and the utility model does not limit the specific application scenario of the spraying device.

As shown in fig. 1 to 3 and 14, the plant protection unmanned aerial vehicle includes a unmanned aerial vehicle body 100 and a transfusion tube 200. When the liquid feeding operation is required to be performed on the plant protection unmanned aerial vehicle, a liquid source can be provided through the liquid supply barrel 300, and the liquid feeding operation can be controlled through the control terminal 400.

The unmanned aerial vehicle body 100 in the plant protection unmanned aerial vehicle is an aircraft for performing a plant protection task. The unmanned aerial vehicle body 100 includes a loading device 80, a flying mechanism, and a spraying apparatus. The load device 80 includes a load frame and a foot rest; the flying mechanism includes a wing or the like, and the flying mechanism is not illustrated in the figure. The spraying device is mounted or carried on the load means 80. The transfer line 200 in the plant protection unmanned aerial vehicle is the accessory, and in an embodiment, when the plant protection unmanned aerial vehicle sprays equipment when regular flight, transfer line 200 and unmanned aerial vehicle main part 100 can be the state of separation, and transfer line 200 does not install on the spraying equipment of unmanned aerial vehicle main part 100, when need carrying out the liquid feeding operation to the plant protection unmanned aerial vehicle, with transfer line 200 with the spraying equipment butt joint of unmanned aerial vehicle main part 100 again. Wherein the liquid supply tank 300 is used for holding the prepared liquid which can be used for adding and supplementing the spraying equipment, and the liquid delivery pipe 200 is used for connecting the liquid storage and supply tank 300 of the spraying equipment with the external liquid supply tank 300 so as to provide a delivery channel. The control terminal 400 may be, but is not limited to, a mobile phone, a remote controller, a spraying device communicatively connected to the control terminal 400, the spraying device may receive instructions, data, etc. sent by the control terminal 400, and the spraying device may respond to the instructions sent by the control terminal 400. Except setting up "adding medicine" button on cell-phone APP or the remote controller, still be equipped with and add medicine selection function to make sprinkler apparatus can carry out automatic liquid feeding according to specific liquid feeding demand.

The spraying apparatus includes a liquid reservoir 50, a liquid pump 60, a three-way joint 10, a spraying device, and a controller, the liquid reservoir 50 may be a tub, a tank, etc., and the liquid reservoir 50 is used for loading liquid to be used, such as a medicine liquid, etc. As shown in fig. 1, 3 and 14, the liquid storage container 50 is connected to the liquid pump 60, the liquid pump 60 is connected to the spraying device through a liquid supply passage, and the liquid pump 60 is connected to the external liquid supply pipe 200 through a liquid supply passage. The controller is a component for commanding each component of the computer to work in coordination according to the function requirement of the instruction, is a neural center and a command center of the computer, is electrically connected with the liquid pump, and controls the starting and stopping and the rotating direction of the liquid pump 60. The controller can be, but is not limited to, a PLC controller or a control chip.

The liquid pump 60 is a bi-directional pump, which is a pump having a delivery capability for delivering fluid in both directions, and the driver of the bi-directional pump rotates in the opposite direction to deliver water flow when it is rotated in the forward direction and in the reverse direction. In this embodiment, the liquid pump 60 is a peristaltic pump that includes a driver, a pump head, and a hose, wherein the fluid is isolated in the pump tube, the pump tube can be replaced quickly, the fluid is reversible, can run dry, and has bi-directional equal flow delivery capability. In other embodiments, the bi-directional pump may be other water pumps, such as a three-phase electric water pump, a centrifugal water pump, and the like.

The liquid pump 60 is connected to a controller, and the controller controls the start or stop of the drive of the liquid pump 60, the rotational direction of the drive of the liquid pump 60, and the rotational speed of the drive of the liquid pump 60. Wherein the liquid pump 60 may be connected to the controller via a bus.

When the spraying device performs a spraying operation, the controller controls the driver of the liquid pump 60 to rotate forward so as to convey the liquid in the liquid storage container 50 from the liquid supply channel to the spraying device, so that the liquid is sprayed out from the spraying device. The controller controls the reverse rotation of the drive of the liquid pump 60 when it is desired to charge the spraying device to deliver liquid from the outside of the spraying device to the inside of the liquid reservoir 50 via the liquid replenishment passage.

With continued reference to fig. 3, in order to realize the function of forward rotation spraying and reverse rotation liquid adding of the liquid pump 60 of the spraying device with a simple structure, a liquid supply channel and a liquid supplementing channel are configured through the same pipe fitting: the pipe fitting is a three-way joint 10, as shown in fig. 14, three ends of the three-way joint 10 are respectively used for being connected with a liquid pump 60, a spraying device and a transfusion tube 200, and a liquid channel and a liquid supplementing channel are provided in the three-way joint 10.

When the spraying device performs a spraying operation as shown in fig. 2 and 5, the infusion tube 200 is separated from the three-way joint 10, the liquid supply channel in the three-way joint 10 is opened, the liquid supplementing channel is closed, and the controller controls the liquid pump 60 to rotate in the forward direction, as shown in fig. 15 a), so that the liquid is sprayed out of the spraying device. When the spraying device supplements liquid medicine, as shown in fig. 15 b), the infusion tube 200 is butted with the three-way joint 10, the liquid supply channel in the three-way joint 10 is closed, the liquid supplementing channel is opened, the other end of the infusion tube 200 is butted with the liquid supply barrel 300 outside the spraying device, the liquid supply barrel 300 is used for containing liquid to be supplemented, and the controller controls the liquid pump 60 to rotate forwards, so that the liquid is pumped from the liquid supply barrel 300 outside to the liquid storage container 50 inside the spraying device.

The spraying working principle of the spraying equipment is as follows: when the spraying device is used for spraying, the infusion tube 200 is separated from the three-way joint 10 in the spraying device, the liquid supply channel of the three-way joint 10 is opened, the liquid supplementing channel is closed, the spraying device is mounted on an aircraft or other mobile devices, the spraying device is in communication connection with the control terminal 400 such as a mobile phone and a controller, and a corresponding spraying instruction is sent through the control terminal 400, at this time, the controller controls the liquid pump 60 to rotate in a first direction according to the spraying instruction at a set rotating speed according to the spraying instruction, and then liquid in the liquid storage container 50 is pumped to a spray head at the tail end of a pipeline or other spraying devices, so that the spraying function is realized.

The liquid feeding theory of this spraying equipment does: when the spraying device is used for liquid adding, the infusion tube 200 is in butt joint with the three-way joint 10 in the spraying device, the liquid supply channel of the three-way joint 10 is closed, the liquid supplementing channel is opened, the other end of the infusion tube 200 is placed in the liquid supply barrel 300, the spraying device is in communication connection with the control terminal 400 such as a mobile phone and a controller, and a corresponding liquid adding instruction is sent through the control terminal 400, at the moment, the controller controls the liquid pump 60 to rotate in a second direction according to the liquid adding instruction according to the spraying instruction at a set rotating speed, and the second direction is opposite to the first direction, so that liquid in the external liquid supply barrel 300 is pumped into the liquid storage container 50, and the function of automatic liquid adding is realized.

In other embodiments, two independent water pipes are respectively connected with the liquid pump 60, one of the two independent water pipes is a liquid supply pipe, the other of the two independent water pipes is a liquid supplementing pipe, the two independent water pipes respectively provide a liquid supply channel and a liquid supplementing channel, and valves can be respectively arranged on the two independent water pipes.

The utility model controls the rotation of the driver in the forward and reverse directions by the controller, and can realize the fluid delivery in the forward and reverse directions, so that the liquid can be pumped outwards from the liquid storage container 50 by controlling the forward rotation of the driver to realize the spraying operation, and the liquid can be pumped outwards from the outside to the liquid storage container 50 by controlling the reverse rotation of the driver to realize the automatic liquid adding function.

Compared with the related technology, the spraying equipment and the plant protection unmanned aerial vehicle have the following advantages:

first, let the process of liquid feeding more automatic, the in-process of liquid feeding, operating personnel need not to remove and lift the confession liquid bucket 300 and empty liquid, liberate both hands, reduce intensity of labour, reduce operating personnel contact liquid medicine, reduce operating personnel health risk.

Secondly, this sprinkler and plant protection unmanned aerial vehicle utilizes sprinkler's original liquid pump 60, cooperates three way connection 10, can realize sprinkler reverse liquid feeding's process, because need not to add too much equipment, instrument additionally, need not to increase liquid pump 60, compares one set of liquid feeding equipment of additional configuration, can reduce cost input and subsequent maintenance cost, so, can reduce user's use cost.

Thirdly, this sprinkler and plant protection unmanned aerial vehicle, owing to need not to dispose a set of independent liquid feeding equipment, can not additionally occupy too much space, there is not electronic equipment, no battery, no circuit in transfer line 200 and the confession liquid bucket 300, preserve easily, light in weight practices thrift the space, convenient transportation, transition, deposit.

With continued reference to FIG. 3, in order to provide more accurate and intelligent control of the liquid addition, the spraying apparatus for plant protection includes a flow detection module. In this embodiment, the flow detection module is a liquid level sensor 70. The liquid level sensor 70 is installed on the liquid storage container 50, and the liquid level sensor 70 can be a liquid level sensor 70 for detecting the liquid amount in the liquid storage container 50; the level sensor 70 is electrically connected to a controller via a bus or other means, the controller being configured to receive information about the amount of liquid sent by the level sensor 70. The liquid level sensor 70 may be a non-contact liquid level sensor 70 such as an ultrasonic liquid level sensor 70 or a radar liquid level sensor 70, or may be a contact liquid level sensor 70 such as a float liquid level sensor 70.

The liquid level sensor 70 is arranged, so that quantitative liquid adding and automatic liquid adding stopping can be realized: when the liquid level sensor 70 detects that the liquid amount in the liquid storage container 50 reaches the set target liquid amount, or when the liquid level sensor 70 detects that the liquid amount in the liquid storage container 50 reaches the preset maximum liquid amount. The controller of the spraying device receives the liquid amount information of the liquid level sensor 70, the controller controls the liquid pump 60 to stop working, or the control terminal 400 such as a mobile phone receives the liquid amount information of the liquid level sensor 70, the control terminal 400 receives the liquid amount signal processing analysis and then sends an instruction to the controller of the spraying device, and the controller controls the liquid pump 60 to stop working and automatically stops liquid adding. At this time, the control terminal 400 reminds the user of the completion of the liquid feeding by means of voice, vibration, lighting, etc., and the indicator lamp on the liquid level sensor 70 is changed from flashing to normal lighting to be also used as a liquid feeding completion prompt. Therefore, quantitative liquid adding or filling stopping can be realized, waste caused by excessive overflow is avoided, the problem of inaccurate liquid adding caused by the way that liquid adding is stopped by observing the liquid amount through eyes in the related art can be solved, and the automation of liquid adding operation is improved.

Setting up the liquid level sensor 70, liquid feeding progress monitoring can be realized: the liquid level sensor 70 can sense the liquid adding condition in real time and feed back information to the controller processing system, so that the automatic liquid adding device can accurately add liquid, and meanwhile, the indicator lamp of the liquid level sensor 70 is controlled to flash according to specific colors and frequencies, liquid adding progress feedback is provided, and a user can conveniently arrange other works according to the liquid adding schedule.

The liquid level sensor 70, the controller and the control terminal 400 are matched, so that liquid can be added more accurately and intelligently, the quantitative filling of the filling amount can be set according to the use requirement on the premise that no additional measuring tool is added, the repeated operation of increasing the workload for many times due to insufficient filling is avoided, waste caused by the fact that the filling is excessively used up is avoided, and meanwhile, the energy loss caused by the fact that the weight of an unused load is increased is avoided.

With continued reference to fig. 1, 2 and 17, an automatic liquid feeding system of a plant protection unmanned aerial vehicle, also referred to as an automatic drug feeding system of a plant protection unmanned aerial vehicle, is provided. Through the cooperation of the system of each module in this automatic liquid feeding system, can realize plant protection unmanned aerial vehicle's intelligent liquid feeding.

The liquid feeding system of plant protection unmanned aerial vehicle includes ground basic station, land parcel information acquisition system and plant protection unmanned aerial vehicle's unmanned aerial vehicle system on the unmanned aerial vehicle main part 100. The plant protection machine system comprises a control terminal 400 and the spraying equipment. This spraying equipment includes communication module, and plant protection unmanned aerial vehicle passes through communication module and control terminal 400 communication connection, based on the communication connection of plant protection unmanned aerial vehicle and control terminal 400 such as cell-phone, remote controller, can provide more intelligent liquid feeding function: the plant protection unmanned aerial vehicle can receive the liquid adding information and the target area information sent by the control terminal 400, and the mobile equipment can transfer some information processing tasks to the control terminal 400 for processing. The communication module may be, but is not limited to, a bluetooth module. The liquid adding information can be, but is not limited to, liquid adding amount and liquid adding speed.

The user may input a filling instruction at the control terminal 400 and perform filling confirmation at the control terminal 400. The interactive page of the control terminal 400 may provide a plurality of liquid feeding modes to select and control liquid feeding: liquid feeding mode one: the target liquid adding amount can be obtained according to the liquid medicine requirement of the prescription chart, and liquid adding is carried out. And a liquid adding mode II: according to the target area information, the target liquid adding amount is calculated, and liquid adding is carried out, so that the liquid adding is accurate, and waste is avoided. And (3) a liquid adding mode III: the target liquid adding amount is determined according to the maximum capacity of the liquid storage container 50, and liquid adding is performed. And a liquid adding mode IV: and receiving the target liquid adding amount directly input by the user, and adding liquid. In the second liquid adding mode, the target area information comprises block land information and/or crop information, the land information can comprise but is not limited to land size information and land position information, and the crop information can comprise but is not limited to crop type information, crop growth condition information and crop disease and insect pest information.

Based on spray equipment adopts the bi-directional pump as liquid pump 60 to based on spray equipment, three way connection 10, transfer line 200, confession liquid bucket 300, cooperation between control terminal 400, can utilize the data of system and handle more intelligently confirm the liquid feeding volume, can carry out the liquid feeding automatically and stop the liquid feeding after confirming the liquid feeding volume, for direct manual liquid feeding, can make the liquid feeding volume of liquid feeding in the liquid storage container 50 more accurate, provide more intelligent, accurate liquid feeding operation, avoid once the liquid feeding too much to cause extravagant, avoid the liquid feeding volume not enough to lead to round trip many times. When the liquid adding operation is performed, the user only needs to install the infusion tube 200 on the spraying device, put the infusion tube 200 into the liquid supply barrel 300, and select a liquid adding mode on the control terminal 400, so that the operation is simple for the user.

As shown in fig. 17, the automatic liquid adding system of the plant protection unmanned aerial vehicle further comprises a ground base station, wherein the base station can be but is not limited to an RTK base station, the control terminal 400 is in communication connection with the base station, the base station is in communication connection with the spraying equipment, and the control terminal 400 can be but is not limited to a mobile phone and a remote controller

With continued reference to fig. 17, in order to provide the requirements of multiple liquid feeding modes, the plant protection system of the plant protection unmanned aerial vehicle includes a prediction system, and the prediction system includes one or more of a set value module, a data acquisition module, a liquid level comparison module, and a positioning module.

The set value module is used for calculating the target liquid adding amount according to the target area information or is used for receiving the setting of a user to determine the target liquid adding amount. The target area information includes land parcel information and/or crop information. The target area information may be information read by the data acquisition module or other modules of the spraying device by the set value module, or may be information sent by the control terminal 400 and received by the set value module, or may be information sent by other external devices and received by the set value module. The setting value module may include a prediction unit and a setting unit, the prediction unit is used for calculating a target adding liquid amount according to the target area information, and the setting unit determines the target adding liquid amount based on a setting value input by a user.

The data acquisition module is used for acquiring target area information, wherein the target area information comprises land parcel information and/or crop information, and the data acquisition module can comprise a camera, a radar and the like; the prediction module can read the target area information of the data acquisition module, process and form an operation guidance prescription chart, calculate the required dosage condition, acquire the position information of the land block, accurately position the land block to prevent and treat the land block, and guide a user on what medicine to prevent and treat the land block. The generation mode of the prescription diagram can be realized according to the related technology.

The liquid level comparison module is used for comparing the target liquid adding amount with the liquid amount detected by the liquid level sensor 70, and the controller controls the liquid pump 60 to perform corresponding work according to the comparison result of the liquid level comparison module.

The positioning module is used for determining the position information of the plant protection unmanned aerial vehicle, and the positioning module is used for collecting the position information of land parcels and also can collect the position information of different conditions of crops, so that the plant protection unmanned aerial vehicle can apply different amounts of medicines according to different accurate positions for prevention and control, and can enable the application of medicines to be more accurate and the application and spraying to be more accurate. Plant protection unmanned aerial vehicle is equipped with the location module and can realizes that breakpoint is continuously spouted, has spouted the medicine in which position, can still follow this position and spout continuously next time, avoids leaking to spout, and makes each time dosing all have better inheritance, realizes more accurate automatic dosing. If a land is bigger, the plant protection unmanned aerial vehicle can bear the former spraying operation condition, the follow-up medicine spraying condition is estimated, the medicine amount requirement calculation of a new non-operation area is carried out, and the medicine is added to the plant protection unmanned aerial vehicle according to the new medicine adding requirement.

With continued reference to fig. 17, the land parcel information collection system may utilize equipment external to the plant protection unmanned aerial vehicle to collect information of the target area, and import or send the information into the plant protection unmanned aerial vehicle. The remote controller or the handheld dotter can be utilized to collect land parcel information, so that the land parcel size and the accurate position of the land parcel are obtained, the land parcel size to be operated is obtained, and after the land parcel is led to the plant protection machine, the pesticide spraying demand can be set, and the accurate pesticide spraying operation is realized. The remote sensing unmanned aerial vehicle can be used for collecting land block information or carrying out operation growth and virus insect damage, the land block size is obtained, the accurate position of the land block is obtained, the land block size to be operated is obtained, and after the land block is guided to a plant protection machine, the pesticide spraying demand can be set, so that accurate pesticide adding and spraying operation can be realized.

The following details the structure of the spraying device and the infusion tube 200 in the plant protection unmanned plane and the cooperation between them:

with continued reference to fig. 1, 2, 4, and 5-13, the infusion tube 200 includes an infusion tube section 41 and a quick release connector 20 coupled to the infusion tube section 41. The quick-release connector 20 of the infusion tube 200 and the third main tube portion 113 of the three-way connector 10 are configured in a quick-release structure, so as to realize quick-release and quick-assembly of the quick-release connector 20 and the third main tube portion 113.

When the liquid storage container 50 needs to be filled, the quick release connector 20 is abutted with the third main pipe portion 113 of the three-way connector 10, and after the liquid filling is completed, the quick release connector 20 is detached from the third main pipe portion 113. The three-way joint 10 is provided with a liquid supply channel and a liquid supplementing channel; the three-way joint 10 has a liquid supply use state in which the liquid supply passage is opened and the liquid supply passage is closed, and has a liquid supply use state in which the liquid supply passage is opened and the liquid supply passage is closed.

When the quick-release connector 20 is in butt joint with the third main pipe 113, the quick-release connector 20 acts on the three-way connector 10 to switch and adjust the three-way connector 10 to a fluid infusion state, and the infusion tube 200 is communicated with the liquid storage container 50 through a fluid infusion channel. When the quick-release connector 20 is separated from the third main pipe portion 113, the three-way connector 10 returns to the liquid supply state, and the liquid storage container 50 is communicated with the spraying device through the liquid supply channel.

The quick release connector 20 of the infusion tube 200 plays a role in butting the infusion tube 200 with the three-way connector 10 on one hand, and plays a role in switching the channel state in the three-way connector 10 after butting on the other hand, so that the fluid infusion channel is opened when the quick release connector 20 is assembled, two roles are realized by one action, an operator does not need to operate a valve to switch the channel state of the three-way connector 10 after butting the infusion tube 200 with the three-way connector 10, and the fluid infusion operation is simpler.

With continued reference to fig. 1-4, the infusion tube 200 includes a filter 42, the filter 42 being connected to an end of the infusion tube segment 41 facing away from the quick release connector 20. The filter 42 at the end of the infusion tube 200 is placed in the liquid supply barrel 300, so that large-particle foreign matters can be isolated from entering the pipeline system of the spraying equipment, and medicine leakage or failure caused by pipeline blockage or damage can be avoided.

In this embodiment, the filter 42 is a filter cartridge.

In other embodiments, the filter 42 includes a housing with a plurality of through holes and a plurality of layers of filter material disposed within the housing.

With continued reference to fig. 1 and 2, the automatic liquid feeding system of the plant protection unmanned aerial vehicle includes a liquid supply barrel 300. The liquid medicine to be sprayed can be stirred in advance in the liquid supply barrel 300.

The automatic liquid feeding system of the plant protection unmanned aerial vehicle has a liquid feeding state, when the automatic liquid feeding system of the plant protection unmanned aerial vehicle is in the liquid feeding state, the quick release connector 20 is in butt joint with the third main pipe part 113, one end of the infusion pipe section 41, which is away from the quick release connector 20, is in butt joint with the liquid supply barrel 300 or is placed into the liquid supply barrel 300, and the driver of the liquid pump 60 is used for reversing so as to pump liquid in the liquid supply barrel 300 into the liquid storage container 50.

Referring to fig. 5 to 13, the three-way connector 10 and the quick release connector 20 of the present embodiment are configured as connectors with anti-drip function, and after the quick release connector 20 is detached from the three-way connector 10, the situation that the three-way connector 10 and the quick release connector 20 leak liquid medicine is avoided, and waste and pollution are avoided. The following describes the structure of the three-way joint 10 and the quick release joint 20 having a self-plugging and drip-proof function.

Referring to fig. 5 to 8 and 10 to 13, the three-way joint 10 includes a main pipe body 11, a first self-plugging head 13, and a first reset member 14.

The main tube 11 includes a first main tube 111, a second main tube 112, and a third main tube 113. The first main pipe portion 111 comprises a first nozzle 101, the second main pipe portion 112 comprises a second nozzle 102, and the third main pipe portion 113 comprises a third nozzle 103. The third main pipe portion 113 is provided with a first stopper portion 12 inside.

The first self-sealing plug 13 is movably disposed in the channel inside the third main pipe portion 113, the first self-sealing plug 13 has a first position and a second position, and the first self-sealing plug 13 is movable along the axial direction of the third main pipe portion 113 to move between the first position and the second position. A first restoring member 14 is mounted to the main tubular body 11, the first restoring member 14 being configured to provide a force to the first self-sealing head 13 for movement to the first position.

The first self-sealing plug 13 provides different passages inside the main pipe body 11 when it is located at different positions. When the first self-sealing plug 13 is located at the first position, the three-way joint 10 is in a liquid supply using state, the liquid supply channel is opened, the liquid supplementing channel is closed, and liquid in the liquid storage container 50 can be pumped to the spraying device through the liquid pump 60 capable of bidirectionally conveying of the spraying device, so that the function of conveying the liquid outwards is completed. When the first self-blocking head 13 is positioned at the second position, the three-way joint 10 is in a liquid supplementing use state, the liquid supplementing channel is opened, the liquid supplying channel is closed, and the liquid in the liquid supplying barrel 300 can be conveyed to the liquid storage container 50 through the liquid pump 60 capable of bidirectionally conveying of the spraying equipment, so that the function of supplementing the liquid inwards is completed

The third main pipe portion 113 of the three-way joint 10 provides a quick disconnect joint 20 mounting location. When the quick release connector 20 is in butt joint or separation with the three-way connector 10, the state of the three-way connector 10 can be switched. When the quick release connector 20 is docked with the third main pipe portion 113, the first self-sealing plug 13 is located at the second position. When the quick release connector 20 is separated from the third main pipe portion 113, the first self-sealing plug 13 returns to the first position under the action of the first resetting member 14.

When the first self-sealing plug 13 is located at the first position, the end face of the first self-sealing plug 13 facing the side of the third pipe orifice 103 abuts against the first limiting portion 12, so that the first self-sealing plug 13 is limited to be separated from the third pipe orifice 103, and the first self-sealing plug 13 is matched with the first limiting portion 12 to seal the third pipe orifice 103. Note that closing the third nozzle 103 means that liquid cannot enter or exit the main tube body 11 from the third nozzle 103.

When the first self-sealing plug 13 is located at the first position, a channel communicated between the first pipe orifice 101 and the second pipe orifice 102 is opened, at this time, the channel inside the first main pipe orifice 111 is communicated with the channel inside the second main pipe orifice 112 to form a liquid supply channel, and liquid can flow from the first pipe orifice 101 to the second pipe orifice 102, so that liquid can be supplied from the liquid storage container 50 to the outside.

Thus, the three-way joint 10 is a drip-proof self-sealing joint, when the system is in spraying operation, the third pipe orifice 103 of the three-way joint 10 is self-sealed and cannot flow out of liquid, so that residual liquid medicine in the main pipe body 11 is prevented from flowing out and leaking, waste or no person is caused, and the liquid medicine in the liquid storage container 50 is prevented from being sucked out by siphon phenomenon of the pipe. When the system is in liquid feeding operation, the first self-plugging head 13 can be jacked up through the quick-release connector 20, the supplementing liquid channel is opened, the liquid feeding channel is closed, and the use state is switched.

When the first self-sealing plug 13 is located at the second position, the first self-sealing plug 13 is separated from the first limiting portion 12, the first self-sealing plug 13 is separated from the first main pipe portion 111 and the second main pipe portion 112, or separated from the first main pipe portion 111 or separated from the second main pipe portion 112, so that the first self-sealing plug 13 cuts off and seals the communication channel between the first pipe orifice 101 and the second pipe orifice 102, and the third pipe orifice 103 is communicated with the first pipe orifice 101 through the fluid supplementing channel, so that fluid can flow from the third pipe orifice 103 to the first pipe orifice 101, and the addition and supplement of the fluid to the fluid storage container 50 from the outside can be realized. The liquid flow in the liquid supplementing channel is as follows: a gap is formed between the third pipe orifice 103, the first self-sealing cap 13 and the first limiting portion 12, a gap is formed between the first self-sealing cap 13 and the inner wall of the third main pipe portion 113, the inside of the first main pipe portion 111, and the first pipe orifice 101.

With continued reference to fig. 5 to 6 and fig. 9 to 13, the quick release connector 20 includes a connector tube 21, a second self-plugging head 23, a second resetting member 24, and a fastening member 253.

The connector body 21 includes a first connector nozzle 201 and a second connector nozzle 202, wherein the first connector nozzle 201 is used for connecting the infusion tube section 41 and the second connector nozzle 202 is used for connecting with the three-way connector 10 when the connector body 21 is applied. The joint pipe 21 is provided with a second stopper 22. The joint pipe body 21 is a two-way pipe body. The second self-sealing plug 23 is movably disposed in the joint pipe body 21, the second self-sealing plug 23 has a sealing position and an opening position, and the second self-sealing plug 23 can move axially along the joint pipe body 21 in the joint pipe body 21 to move to the sealing position or the opening position. A second restoring member 24 is mounted inside the joint body 21, and the second restoring member 24 is configured to provide a force to the second self-sealing cap 23 for moving to the sealing position. The fastening piece 253 is connected with the joint pipe body 21, and the fastening piece 253 is used for being in fastening connection with the three-way joint 10.

When the second self-sealing stopper 23 is located at a different position, the passage inside the joint pipe body 21 is closed or opened. When the second self-sealing stopper 23 is in the open position, the first connector nozzle 201 communicates with the second connector nozzle 202, and opens the flow passage in the quick release connector 20, so that liquid can flow from the first connector nozzle 201 to the second connector nozzle 202. When quick detach connects 20 dress in three way connection 10, and the circulation passageway in the quick detach connects 20 is opened, and the fluid replacement passageway in the three way connection 10 is opened, can send the liquid in the outside medical kit to unmanned aerial vehicle's medical kit in through quick detach subassembly, carries out the liquid medicine and supplements.

When the second self-plugging head 23 is located at the closed position, the end face of the second self-plugging head 23 facing to one side of the second joint pipe orifice 202 abuts against the second limiting part 22, so that the effect of limiting the second self-plugging head 23 to be separated from the second joint pipe orifice 202 is achieved, the second self-plugging head 23 is matched with the second limiting part 22, and the second joint pipe orifice 202 connected with the three-way joint 10 is closed, so that when fluid replacement is not needed, the second joint pipe orifice 202 of the quick-release joint 20 is closed, and leakage of liquid medicine from the second joint pipe orifice 202 is prevented, and waste and pollution are caused.

As shown in fig. 6, 11 and 12, the quick release connector 20 is mounted on the three-way connector 10 with the connector assembly in an assembled state. When the joint assembly is in an assembled state, the joint pipe body 21 is sleeved with the third main pipe part 113, the quick-release joint 20 is in clamping connection with the three-way joint 10 through the buckling piece 253 and is in clamping connection with the third main pipe part 113, the second self-sealing plug 23 and the first self-sealing plug 13 are abutted against each other, the first self-sealing plug 13 moves to a second position under the abutting of the second self-sealing plug 23, the second self-sealing plug 23 moves to an opening position under the abutting of the first self-sealing plug 13, so that an internal channel of the joint pipe body 21 is opened, a fluid supplementing channel of the three-way joint 10 is opened, a fluid supplying channel of the three-way joint 10 is closed, and therefore a water pump of the plant protection unmanned aerial vehicle can be filled with medicine through the opened channel, and the requirement of a use scene of automatic drug filling of the plant protection unmanned aerial vehicle is met.

In other application scenarios, the three-way joint 10 of the three-way joint 10 mounted on the unmanned device may be not pressed by the quick release joint 20 to switch to the fluid infusion state, but a first self-plugging head 13 operation portion capable of manually operating the first self-plugging head 13 to move may be reserved, and the first self-plugging head 13 is manually pushed to the second position by pushing the operation portion to open the fluid infusion channel.

After the unmanned aerial vehicle medical kit is filled with liquid, the quick-release connector 20 is detached by the three-way connector 10, and the connector assembly is in a detached state. When the joint assembly is in a disassembled state, the quick-dismantling joint 20 is separated from the three-way joint 10, the first self-plugging head 13 is reset and kept at the first position under the action of the first reset piece 14, and the second self-plugging head 23 is reset and kept at the closed position under the action of the second reset piece 24.

The three-way joint 10 and the quick release joint 20 of the utility model provide better liquid supply and supplementing effects by the following modes:

first, a three-way connection 10 can provide different waterways under different states, installs a three-way connection 10 at sprinkler, not only can satisfy the liquid demand that equipment goes out to the outside, can also satisfy the demand that is supplied liquid to the inside of equipment by the outside, satisfies two sets of waterways demands through a three-way connection 10, need not to install two sets of waterway structures on sprinkler, and the structure is simpler.

Second, when the quick-release connector 20 is assembled to the three-way connector 10, closing of the liquid supply channel and opening of the liquid supplementing channel of the three-way connector 10 are completed, and the three-way connector 10 is not required to be manually operated again for switching the channels, so that the operation is convenient and quick, and the liquid supplementing efficiency is higher.

Third, when the joint assembly is in an assembled state, the three-way joint 10 has a self-sealing and anti-leakage function, and the first self-sealing plug 13 can seal a channel between the first main pipe portion 111 and the second main pipe portion 112, namely seal a liquid supply channel; thereby avoiding liquid leakage to the second main pipe 112 connected to the spraying device during liquid replenishment and avoiding affecting the accuracy of subsequent spraying operation; leakage among different channels is avoided, and fluid infusion efficiency is guaranteed.

Fourth, when the joint assembly is in a disassembled state, the three-way joint 10 has a self-sealing and leakage-preventing function, the first self-sealing plug 13 plugs the third pipe orifice 103, when no external force is propped against the joint assembly, the self-sealing and leakage-proof of the third main pipe orifice 113 is realized, and the leakage of liquid from the third pipe orifice 103 during liquid supply is avoided, so that waste or environmental pollution is caused.

Fifth, when the joint assembly is in the disassembled state, the quick-release joint 20 has a self-sealing and leakage-preventing function, and the second joint pipe orifice 202 is plugged by the second self-sealing plug 23, so that residual liquid is prevented from leaking out of the second joint pipe orifice 202, and waste or environmental pollution is avoided.

Sixth, when the joint assembly is in an assembled state, the quick-release joint 20 and the three-way joint 10 are kept in a clamping and buckling manner through the buckling piece 253, so that manual operation is not needed, and the labor is saved and the efficiency is improved.

With continued reference to fig. 7, 8, 11, and 12, the three-way joint 10 is configured in such a way as to achieve the closing of the passage between the first main pipe portion 111 and the second main pipe portion 112 when the first self-plugging head 13 is moved to the second position.

The three-way joint 10 includes a secondary pipe body 15. The sub-pipe body 15 is provided inside the main pipe body 11. The sub-pipe body 15 includes a first sub-pipe portion 151 and a second sub-pipe portion 152. The first sub-pipe portion 151 is spaced between the first main pipe portion 111 and the second main pipe portion 112, the second sub-pipe portion 152 is located in the third main pipe portion 113, an overcurrent gap 105 is formed between the second sub-pipe portion 152 and the third main pipe portion 113, and the end of the second sub-pipe portion 152 forms the sub-pipe orifice 104.

In other words, the liquid in the first main pipe portion 111 is blocked by the sub pipe body 15, cannot flow directly into the second main pipe portion 112, but must first enter the passage of the sub pipe body 15, and then pass through the sub pipe orifice 104 and the flow gap 105, before flowing into the second main pipe portion 112. In this way, by opening or closing the sub-nozzle 104, the on-off between the channels of the first main pipe portion 111 and the second main pipe portion 112 can be achieved, and the communication or the blocking between the first nozzle 101 and the second nozzle 102 can be achieved.

When the first self-plugging head 13 is located at the first position, the first self-plugging head 13 opens the auxiliary pipe orifice 104, the first main pipe 111, the auxiliary pipe, the overflow gap 105, and the second main pipe 112 are sequentially communicated to form a liquid supply channel, and the first pipe orifice 101 is communicated with the second pipe orifice 102 through the liquid supply channel. When the first self-sealing cap 13 is located at the second position, the first self-sealing cap 13 seals the auxiliary pipe orifice 104 to close the liquid supply channel, so that the first pipe orifice 101 and the second pipe orifice 102 cannot be communicated.

In this embodiment, by configuring the secondary pipe portion and by means of the small pipe in the large pipe, the secondary pipe orifice 104 can be opened or capped by the first self-plugging head 13 to realize the switching of two waterways, so that the three-way structure is simpler. In addition, the sealing member is arranged on one side of the first self-sealing plug 13 close to the auxiliary pipe body 15, so that sealing leakage prevention during sealing of the auxiliary pipe orifice 104 is easy to realize.

With continued reference to fig. 10 to 13, in order to facilitate manual operation to achieve the snap connection or disconnection between the quick release connector 20 and the three-way connector 10, the quick release connector 20 includes a sleeve 251, and the sleeve 251 is used to lock or unlock the fastening member 253.

The sleeve 251 is sleeved outside the joint pipe body 21, the sleeve 251 is movably connected with the joint pipe body 21, and the sleeve 251 can move to a locking position or an unlocking position along the axial direction of the joint pipe body 21. When the sleeve 251 is in the locking position, the sleeve 251 acts on the fastening member 253 to fasten the fastening member 253 to the third main pipe portion 113, so as to maintain the connection between the quick release connector 20 and the three-way connector 10, and to maintain the abutment of the second self-sealing plug 23 against the first self-sealing plug 13. When the sleeve 251 is in the unlocked position, the fastening member 253 is disengaged from the third main pipe portion 113, and the quick connector 20 can be detached.

The quick disconnect 20 includes a third reset member 252. A third restoring member 252 is provided between the sleeve 251 and the joint body 21, and the third restoring force provides a force to the sleeve 251 to be maintained in the locked position.

In other embodiments, the third restoring member 252 may not be provided, positioning holes may be provided in the joint pipe body 21 and the third main pipe portion 113, respectively, and after the quick release joint 20 is inserted into the three-way joint 10, positioning pins may be engaged into the two positioning holes, or the joint assembly may be maintained in an assembled state.

With continued reference to fig. 7, 9, 10 and 11, a first elastic sealing member is disposed on a side of the first self-sealing cap 13 close to the third main pipe orifice so as to improve the sealing and leakage preventing effect of the first self-sealing cap 13 on the third main pipe orifice when in the first position, and a second elastic sealing member is disposed on a side of the first self-sealing cap 13 close to the auxiliary pipe body 15 so as to improve the sealing effect of the first self-sealing cap 13 on the pipe orifice of the auxiliary pipe body 15 when in the second position, thereby improving the sealing effect of the liquid supply channel. A third elastic sealing member is disposed on a side of the second self-sealing cap 23 close to the second joint orifice 202, so as to improve the sealing and leakage-preventing effect of the second self-sealing cap 23 on the second joint orifice 202 when the second self-sealing cap 23 is in the sealing position.

The first restoring member 14, the second restoring member 24, and the third restoring member 252 are springs. In other embodiments, the first restoring member 14, the second restoring member 24, and the third restoring member 252 may be magnets or the like.

The three-way joint 10 comprises a mounting seat 30, and the main pipe body 11 is connected with the mounting seat 30; the mounting block 30 may be mounted to the reservoir 50 by fasteners.

In one embodiment, the loading device 80 includes a load frame and a stand, the stand is disposed below and connected to the load frame, the liquid storage container 50 is disposed below the load frame, and the liquid storage container 50 is connected to the load frame and/or the stand. The load device 80 is a main body to which each component is attached, and the load device 80 is also a component connected to the power unit of the plant protection unmanned plane.

The liquid pump 60 is fixed to the liquid storage container 50 through a fastener, the liquid pump 60 comprises a front end pipe section and a tail end pipe section, and the liquid storage container 50 comprises a connecting pipe section; the front end pipe section is butted against the connecting pipe section, and the end pipe section is butted against the first main pipe section 111.

The fluid level sensor 70 is secured to the reservoir 50 by fasteners.

With continued reference to fig. 4 and 5, the connector body 21 is provided with a filling function for facilitating connection of the infusion tube section 41.

The joint pipe body 21 includes a first joint pipe portion 211, a first joint pipe orifice 201 formed in the first joint pipe portion 211, and a second joint pipe portion 212, a second joint pipe orifice 202 formed in the second joint pipe portion 212; the first joint pipe part 211 is used for being connected with the infusion pipe section 41, and the second joint pipe part 212 is used for being connected with the three-way joint 10; the diameter of the first joint pipe section 211 is smaller than the diameter of the second joint pipe section 212. The first joint pipe part 211 is arranged, so that the infusion pipe section 41 is conveniently sleeved on the quick-release joint 20, and the first joint pipe orifice 201 of the quick-release joint 20 is communicated with liquid supply equipment or a liquid supply container through a water inlet pipe.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. A spraying device for plant protection, characterized by comprising a liquid storage container (50), a liquid pump (60), a spraying device and a controller; the liquid storage container (50) is connected with the liquid pump (60), the liquid pump (60) can be connected with the spraying device through a liquid supply channel, and the liquid pump (60) can be connected with the infusion tube (200) through a liquid supplementing channel;

the liquid pump (60) is a bidirectional pump, and the liquid pump (60) is connected with the controller; the controller is used for controlling the forward rotation or the reverse rotation of a driver of the liquid pump (60); delivering liquid in the liquid storage container (50) from the liquid supply channel to the spraying device when the driver of the liquid pump (60) rotates forward; when the drive of the liquid pump (60) is reversed, liquid outside the spraying device is delivered from the liquid replenishment channel to the liquid storage container (50).

2. The spraying apparatus for plant protection according to claim 1, comprising a liquid level sensor (70), the liquid level sensor (70) being mounted to the liquid reservoir (50), the liquid level sensor (70) being adapted to detect the amount of liquid within the liquid reservoir (50); the controller is used for receiving liquid amount information sent by the liquid level sensor (70).

3. The spraying device for plant protection according to claim 1, characterized in that it comprises a three-way joint (10), the three-way joint (10) comprising a first main pipe portion (111), a second main pipe portion (112) and a third main pipe portion (113); the first main pipe (111) is connected to the liquid pump (60), the second main pipe (112) is connected to the spraying device, and the third main pipe (113) is connected to the infusion tube (200).

4. A spraying device for plant protection according to claim 3, characterized in that the infusion tube (200) comprises an infusion tube section (41) and a quick-release connector (20) connected to the infusion tube section (41);

the three-way joint (10) is provided with the liquid supply channel and the liquid supplementing channel; the three-way joint (10) is provided with a liquid supply using state that the liquid supply channel is opened and the liquid supplementing channel is closed, and is provided with a liquid supplementing using state that the liquid supplementing channel is opened and the liquid supply channel is closed;

When the quick-release connector (20) is in butt joint with the third main pipe part (113), the quick-release connector (20) acts on the three-way connector (10) to enable the three-way connector (10) to be in the fluid infusion state, and the infusion tube (200) is communicated with the fluid reservoir (50) through the fluid infusion channel; when the quick-release connector (20) is separated from the third main pipe part (113), the three-way connector (10) is in the liquid supply using state, and the liquid storage container (50) is communicated with the spraying device through the liquid supply channel.

5. The spraying device for plant protection according to claim 4, characterized in that the infusion tube (200) comprises a filter (42), the filter (42) being connected to an end of the infusion tube section (41) facing away from the quick release connector (20).

6. The spraying device for plant protection according to claim 4, characterized in that said three-way joint (10) comprises a main pipe body (11), a first self-closing plug (13) and a first reset (14);

the main tube body (11) comprises a first main tube (111), a second main tube (112) and a third main tube (113); the first main tube portion (111) comprises a first nozzle (101), the second main tube portion (112) comprises a second nozzle (102), and the third main tube portion (113) comprises a third nozzle (103); the third main pipe part (113) is provided with a first limit part (12);

The first self-plugging head (13) is movably arranged in the third main pipe part (113); the first self-plugging head (13) is provided with a first position and a second position; when the first self-plugging head (13) is positioned at the first position, the first self-plugging head is abutted against the first limiting part (12) and seals the third pipe orifice (103), and the first pipe orifice (101) is communicated with the second pipe orifice (102); when the first self-blocking head (13) is positioned at the second position, the first self-blocking head (13) closes a communication channel between the first pipe orifice (101) and the second pipe orifice (102), and the first pipe orifice (101) is communicated with the third pipe orifice (103); the first resetting piece (14) is mounted on the main pipe body (11);

when the quick-release connector (20) is in butt joint with the third main pipe part (113), the first self-plugging head (13) is positioned at the second position; when the quick-release connector (20) is separated from the third main pipe part (113), the first self-plugging head (13) returns to the first position under the action of the first reset piece (14).

7. The spraying device for plant protection according to claim 6, characterized in that the quick-release joint (20) comprises a joint pipe body (21), a second self-closing plug (23) and a second reset (24); the joint pipe body (21) comprises a first joint pipe orifice (201) and a second joint pipe orifice (202) which are oppositely arranged; the joint pipe body (21) is provided with a second limiting part (22); the second self-plugging head (23) is movably arranged in the joint pipe body (21); the second self-sealing plug (23) has a sealing position and an opening position; when the self-plugging head is positioned at the closed position, the second self-plugging head (23) is abutted against the second limiting part (22) and closes the second joint pipe orifice (202); in the open position, the first connector nozzle (201) is in communication with the second connector nozzle (202); the second reset piece (24) is arranged on the joint pipe body (21), and the second reset piece (24) is used for providing a force for moving to a closed position for the second self-sealing plug (23);

When the quick-release connector (20) is in butt joint with the third main pipe part (113), the second self-sealing plug (23) and the first self-sealing plug (13) are mutually abutted, the first self-sealing plug (13) is located at the second position, the second self-sealing plug (23) is located at the opening position, and the first connector pipe orifice (201) is communicated with the first pipe orifice (101) through the fluid supplementing channel.

8. The spraying apparatus for plant protection according to any one of claims 1 to 7, wherein the liquid pump (60) is a peristaltic pump.

9. A plant protection drone comprising a spraying device for plant protection as claimed in any one of claims 1 to 8.

10. The plant protection unmanned aerial vehicle according to claim 9, wherein the plant protection unmanned aerial vehicle comprises a communication module, through which the plant protection unmanned aerial vehicle can be communicatively connected with a control terminal (400).