WO2021056456A1

WO2021056456A1 - Spraying assembly, spraying system, mobile device and spraying method

Info

Publication number: WO2021056456A1
Application number: PCT/CN2019/108686
Authority: WO
Inventors: 舒展; 周乐; 周万仁
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2021-04-01
Also published as: CN112153895B; CN112153895A

Abstract

A spraying assembly (100), comprising a spray head assembly (110), a pressure switch (120), a water pump device (130) and a main pipe (141), the main pipe (141) being obliquely provided relative to the horizontal plane, and the pressure switch (120) provided adjacent to a first end (1411) of the main pipe (141) being used for connecting a liquid inlet flow channel (111) and an exhaust flow channel (113), so as to discharge gas in the spraying assembly (100). Further disclosed are a spraying system, a mobile device and a spraying method for a mobile device.

Description

Spraying component, spraying system, moving device and spraying method

Technical field

This application relates to the technical field of pump assembly equipment, and in particular to a spraying assembly, a spraying system, a moving device and a spraying method.

Background technique

With the continuous improvement of environmental protection requirements, people have higher and higher requirements for the spray system to prevent leakage when spraying is stopped. Due to the effect of gravity, when the existing spraying system stops spraying, the spray nozzle usually has liquid dripping out, that is, there is a dripping problem, which causes a waste of liquid medicine and also pollutes the environment. In order to solve the problem of nozzle leakage after spraying is stopped, a normally closed pressure switch or pressure relief valve is usually set on the nozzle. When the pressure at the outlet of the spray system is greater than the pressure threshold, the spray system will perform spraying operations. When the spray is stopped, the pressure relief valve can be automatically closed to prevent liquid leakage.

However, for pluggable water tanks, that is, water tanks that can be removed from a mobile platform such as a drone, each time the water tank is plugged in or pulled out, air can easily enter the pipes of the spray system. When there is air in the pipes of the spray system, especially in the pump cavity, the pressure of the water outlet of the spray system cannot reach the above-mentioned pressure threshold, so that the pressure relief valve cannot be opened and exhausted. At this time, it is necessary to manually open the pressure relief valve on each nozzle to discharge the gas in the spray system, which is time-consuming and labor-intensive, which increases labor costs.

Summary of the invention

Based on this, the present application provides a spray assembly, a spray system, a mobile device, and a spray method, aiming to reduce labor costs and improve pressure relief efficiency.

In the first aspect, the present application provides a spray assembly for use in a spray system, the spray assembly includes:

The nozzle assembly has an inlet flow channel, an outlet flow channel and an exhaust flow channel for spraying operations;

A pressure switch is provided on the spray head assembly, and is used to adjust the air pressure value of the spray head assembly and/or control the dripping or stopping of the spray head assembly;

At least one water pump device, each of which is connected with at least one spray head assembly;

The liquid dispenser includes a main pipe connected between the water pump device and the liquid supply tank of the spray system for guiding the liquid in the liquid supply tank to the water pump device;

Wherein, the main pipe is arranged obliquely with respect to the horizontal plane, and the main pipe has a first end and a second end that are arranged oppositely; the pressure switch corresponding to the water pump device connected to the first end is also used for conducting The inlet flow passage and the exhaust flow passage are such that the gas in the spray assembly passes through the main pipe, the water pump device connected to the first end, the inlet flow passage and the The exhaust runner is discharged.

In the second aspect, this application provides a spraying system, including:

The spray assembly as described above;

The liquid supply tank is in communication with the liquid inlet pipe of the spray assembly;

The catheter is connected with the water pump device and the spray head assembly of the spray assembly, and is used to deliver the liquid pumped from the water pump device to the spray head assembly.

In the third aspect, this application provides a mobile device, including:

Mobile platform

The spraying system as described above is installed on the movable platform.

In a fourth aspect, the present application provides a spraying method for a mobile device, the mobile device comprising a spraying system, the spraying system comprising a spraying assembly and a liquid supply tank for supplying the spraying assembly, the spraying assembly including a spray head Assembly, a pressure switch arranged on the nozzle assembly, a plurality of water pump devices, and a dispenser with a main pipe, the nozzle assembly having an inlet flow passage, an outlet flow passage, and an exhaust flow passage, and the main pipe is relatively horizontal In an inclined arrangement, the main pipe has a first end and a second end opposite to each other; the method includes:

When the pressure in the nozzle assembly is less than the preset pressure threshold, the pressure switch corresponding to the water pump device connected to the first end operates to conduct the inlet and outlet flow channels of the corresponding nozzle assembly ；

When the pressure in the nozzle assembly is greater than a preset pressure threshold, the pressure switch operates to conduct the liquid inlet flow channel and the liquid outlet flow channel;

The spraying system is controlled to drip liquid through the liquid outlet channel.

The embodiments of the present application provide a spraying assembly, a spraying system, a moving device, and a spraying method. When liquid drips from the spraying head assembly, the pressure switch corresponding to the water pump device arranged adjacent to the first end is operated, so that the spraying head assembly is finished leaking. The pressure working state makes the inlet flow path and the exhaust flow path non-conducting. At this time, if the water pump device is turned on, the pressure switch can switch the spray head assembly to the dripping state under the action of hydraulic pressure, that is, the inlet flow channel and the outlet flow channel are connected to perform normal spraying operations. This pressure relief method, especially for spray assemblies with multiple sprinkler assemblies, does not need to operate the pressure switch on each sprinkler assembly separately, that is, it can exhaust at least part of the gas in the sprinkler assembly to perform normal spraying operations, reducing manpower The cost improves the efficiency of pressure relief.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a mobile device provided by an embodiment of the present application;

FIG. 2 is a schematic structural view of a spray assembly provided by an embodiment of the present application from one angle;

Fig. 3 is a schematic structural view of the spray assembly in Fig. 2 from another angle;

Fig. 4 is a schematic structural view of the spraying assembly in Fig. 2 from another angle;

Figure 5 is a schematic diagram of the flow channel of the spray assembly;

Fig. 6 is a schematic structural diagram of a spray assembly provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a spray assembly provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a spray assembly provided by an embodiment of the present application;

9 is a partial structural diagram of a spray assembly provided by an embodiment of the present application, which shows a liquid separation structure and a pressure relief structure;

Figure 10 is a cross-sectional view of the spray assembly in Figure 9 at an angle;

Figure 11 is a cross-sectional view of the spray assembly in Figure 9 from another angle;

FIG. 12 is a schematic flowchart of a spraying method for a mobile device according to an embodiment of the present application;

Label description:

1000. Mobile device;

10. Spraying system;

100. Spray components;

110. Nozzle assembly; 111. Inlet flow path; 112. Outlet flow path; 113. Exhaust flow path; 120. Pressure switch;

130. Water pump device; 130a, first water pump device; 130b, second water pump device; 130c, third water pump device; 130d, fourth water pump device;

140. Dispenser; 141, main pipe; 1411, first end; 1412, second end; 1413, first liquid distribution pipe; 1414, second liquid distribution pipe; 1415, liquid distribution structure; 14151, bottom surface; 14152, the top surface; 14153, the first liquid outlet; 14154, the second liquid outlet; 14155, the liquid inlet;

142. Liquid outlet pipe; 142a, first liquid outlet pipe; 142b, second liquid outlet pipe; 142c, third liquid outlet pipe; 142d, fourth liquid outlet pipe; 1421, liquid outlet; 143, liquid inlet pipe;

150. Pressure relief structure; 151. Pressure relief port; 152. Pressure relief mechanism; 1521, cover part; 1522, connection part; 160, seal;

170. Filter structure; 171. First filter part; 172. Second filter part; 173. Assembly part; 180. Flow meter;

200. Liquid supply tank; 300. Catheter;

20. Movable platform.

detailed description

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The flowchart shown in the drawings is only an example, and does not necessarily include all contents and operations/steps, nor does it have to be executed in the described order. For example, some operations/steps can also be decomposed, combined or partially combined, so the actual execution order may be changed according to actual conditions.

Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Referring to FIG. 1, an embodiment of the present application provides a mobile device 1000 including a spraying system 10 and a movable platform 20, and the spraying system 10 is installed on the movable platform 20. The mobile device 1000 is used in the agricultural industry to spray pesticides, water and other liquids on agricultural products, forests, and the like. The movable platform 20 can realize movement, rotation, turning, etc., and the movable platform 20 can drive the spraying system 10 to move to different positions or different angles to perform spraying operations in a preset area. The movable platform 20 may include an agricultural spraying vehicle, an agricultural drone, or a human-powered spraying device, etc.; or the movable platform 20 may be one of an agricultural spraying vehicle, an agricultural drone, or a human-powered spraying device in one form. In the form of agricultural spraying vehicles, agricultural drones or other types of human spraying devices.

The following description will be given by taking an example in which the movable platform 20 is an agricultural drone and the sprayed liquid is a chemical liquid. It can be understood that the specific form of the movable platform 20 is not limited to agricultural drones, and is not limited here.

Please refer to FIG. 1 and FIG. 2. In some embodiments, the spray system 10 includes a spray assembly 100, a liquid supply tank 200 and a catheter 300. The liquid supply tank 200 communicates with the spray assembly 100. The spraying assembly 100 is used to implement spraying operations. The catheter 300 is connected to the water pump device 130 (see FIG. 2) of the spray assembly 100 and the spray head assembly 110, and is used to deliver the liquid pumped from the water pump device 130 to the spray head assembly 110.

1 and 2, the spray assembly 100 includes a spray head assembly 110, a pressure switch 120, a water pump device 130 and a liquid dispenser 140.

Please refer to Figures 1 to 4, the spray head assembly 110 is used to implement spraying operations. The pressure switch 120 is arranged on the spray head assembly 110 and is used to adjust the air pressure value of the spray head assembly 110 and/or control the spray head assembly 110 to drip or stop liquid. The water pump device 130 is used to pressurize the liquid to the spray head assembly 110 for spraying. At least one spray head assembly 110 is connected to each of the water pump devices 130. The dispenser 140 includes a main pipe 141, which is connected between the water pump device 130 and the liquid supply tank 200 of the spray system 10, and is used to guide the liquid in the liquid supply tank 200 to the water pump device. 130.

Please refer to FIG. 5, where the spray head assembly 110 has an inlet flow passage 111, an outlet flow passage 112 and an exhaust flow passage 113, and the inlet flow passage 111 is in communication with the water pump device 130. The main pipe 141 is arranged obliquely with respect to the horizontal plane, and the main pipe 141 has a first end 1411 and a second end 1412 which are arranged oppositely. The pressure switch 120 corresponding to the water pump device 130 connected to the first end 1411 is also used to conduct the inlet flow passage 111 and the exhaust flow passage 113, so that the spray assembly 100 The gas is discharged through the main pipe 141, the water pump device 130 connected to the first end 1411, the liquid inlet flow passage 111 and the exhaust flow passage 113.

It should be noted that the horizontal plane refers to a plane parallel to the first direction X, please refer to FIG. 4. The direction in which the agricultural UAV moves vertically is defined as the vertical direction, that is, the second direction Z in Fig. 4.

Specifically, when the pressure in the spray head assembly 110 is greater than the preset pressure threshold, the pressure switch 120 is activated, so that the inlet flow passage 111 of the spray head assembly 110 and the outlet flow passage 112 are connected. At this time, pesticides, water and other liquids can be carried out. Spraying. When the pressure in the spray head assembly 110 is less than the preset pressure threshold, the pressure switch 120 is activated, so that the liquid inlet flow channel 111 and the liquid outlet flow channel 112 of the spray head assembly 110 are not connected. When the pressure needs to be relieved, the pressure switch 120 can be operated to make the liquid inlet flow passage 111 and the exhaust flow passage 113 of the spray head assembly 110 communicate, so as to discharge the gas in the spray system 10, thereby realizing pressure relief and effectively avoiding liquids such as pesticides. Leakage causes liquid waste and environmental pollution. The preset pressure threshold can be designed to any suitable value according to requirements, such as 0.15MPa, 0.2MPa, 0.3MPa, etc.

Wherein, the number of the nozzle assembly 110 is at least one, and can be one, two, three, four or more, and the embodiment of the present application is not limited thereto. The number of water pump devices 130 can be set according to actual needs, such as one, two, three, four or more, and the embodiment of the present application is not limited thereto.

Please refer to FIGS. 2 to 4, in some embodiments, the liquid dispenser 140 further includes a liquid outlet pipe 142. The number of liquid outlet pipes 142 and the water pump device 130 are equal, and the liquid outlet pipe 142 is connected between the water pump device 130 and the main pipe 141. The liquid distributor 140 can divide the liquid and deliver the liquid to the at least one water pump device 130 through the at least one liquid outlet pipe 142 respectively.

When the number of liquid outlet pipes 142 is multiple, the plurality of liquid outlet pipes 142 are distributed on the main pipe 141 at intervals. In some embodiments, a plurality of liquid outlet pipes 142 are distributed on the main pipe 141 at symmetrical intervals. Specifically, when the number of liquid outlet pipes 142 is an even number, adjacent liquid outlet pipes 142 are distributed on the main pipe 141 at intervals, and half of the liquid outlet pipes 142 and the remaining half of the liquid outlet pipes 142 are arranged symmetrically. When the number N of the outlet pipes 142 is an odd number, (N-1)/2 outlet pipes 142 and the remaining (N-1)/2 outlet pipes 142 are related to the outlet pipe 142 located in the middle of the main pipe 141. Symmetrical distribution.

Please refer to FIG. 4, the arrangement direction of the plurality of liquid outlet pipes 142 is parallel to the arrangement direction of the plurality of water pump devices 130. Specifically, the arrangement directions of the plurality of liquid outlet pipes 142 and the plurality of water pump devices 130 are all parallel to the first direction X, that is, the arrangement direction of the plurality of liquid outlet pipes 142 is parallel to the first direction X, and more The arrangement direction of each of the water pump devices 130 is parallel to the first direction X.

4, illustratively, the main pipe 141 is provided with four outlet pipes 142, which are the first outlet pipe 142a, the second outlet pipe 142b, the third outlet pipe 142c, and the fourth outlet pipe 142a, the second outlet pipe 142b, and the fourth outlet pipe 142a arranged in sequence. Liquid pipe 142d. The four water pump devices 130 connected to the four liquid outlet pipes 142 are respectively a first water pump device 130a, a second water pump device 130b, a third water pump device 130c, and a fourth water pump device 130d. The first water pump device 130a is connected, the second liquid outlet pipe 142b is connected to the second water pump device 130b, the third liquid outlet pipe 142c is connected to the third water pump device 130c, and the fourth liquid outlet pipe 142d is connected to the fourth water pump device 130d. The first liquid outlet pipe 142a is arranged close to the first end 1411 of the main pipe 141, and the fourth liquid outlet pipe 142d is arranged away from the first end 1411 of the main pipe 141.

When it is necessary to discharge the gas in the spray assembly 100, especially the water pump device 130 and the dispenser 140, manually operate the pressure switch 120 corresponding to the first outlet pipe 142a (that is, connected to the spray head assembly 110 of the first water pump device 130a). The set pressure switch 120) makes the inlet flow passage 111 and the exhaust flow passage 113 of the spray head assembly 110 corresponding to the first water pump device 130a communicate. At this time, the gas in the spray assembly 100 can be discharged through the main pipe 141, the first water pump device 130a corresponding to the first liquid outlet pipe 142a, and the nozzle assembly 110 corresponding to the first water pump device 130a, thereby achieving pressure relief and exhaust.

Referring to FIGS. 2 to 4, in some embodiments, the length of the liquid outlet pipe 142 adjacent to the first end 1411 is smaller than the length of the liquid outlet pipe 142 adjacent to the second end 1412. Among them, the length of each liquid outlet pipe 142 can be set according to actual requirements. In a specific embodiment, assuming that the number of outlet pipes 142 is M, the lengths of the M outlet pipes 142 are successively decreased, and the length of the outlet pipe 142 adjacent to the first end 1411 is the smallest, and adjacent to the second end 1412 The length of the outlet pipe 142 is the largest.

4, taking the number of outlet pipes 142 as an example, the four outlet pipes 142 are the first outlet pipe 142a, the second outlet pipe 142b, the third outlet pipe 142c, and the fourth outlet pipe 142. Liquid pipe 142d. The first liquid outlet pipe 142a is arranged close to the first end 1411 of the main pipe 141, and the fourth liquid outlet pipe 142d is arranged away from the first end 1411 of the main pipe 141. The lengths of the first outlet pipe 142a, the second outlet pipe 142b, the third outlet pipe 142c, and the fourth outlet pipe 142d increase in order.

Please refer to FIGS. 2 to 4, the liquid outlet pipe 142 has a liquid outlet 1421 connected to the water pump device 130. When the number of the liquid outlet pipes 142 is multiple, the arrangement direction of the liquid outlets 1421 of the multiple liquid outlet pipes 142 is parallel to the arrangement direction of the multiple water pump devices 130. Specifically, the arrangement direction of the liquid outlet 1421 of each liquid outlet pipe 142 and the arrangement direction of the plurality of water pump devices 130 are both parallel to the first direction X.

Referring to FIGS. 2 to 4, in some embodiments, the liquid distributor 140 further includes a liquid inlet pipe 143 connected between the liquid supply tank 200 and the main pipe 141. The liquid inlet pipe 143 communicates with the liquid supply tank 200, and the liquid in the liquid supply tank 200 is guided to the water pump device 130 through the liquid inlet pipe 143, the main pipe 141, and the liquid outlet pipe 142, and is delivered to the nozzle assembly after being pressurized by the water pump device 130 110 for spraying.

2 to 4, in some embodiments, the main pipe 141 includes a first liquid distribution pipe 1413 and a second liquid distribution pipe 1414, and the first liquid distribution pipe 1413 and the second liquid distribution pipe 1414 are symmetrically distributed. The first liquid distribution pipe 1413 and the second liquid distribution pipe 1414 are respectively communicated with at least one liquid outlet pipe 142.

In some specific embodiments, the first liquid distribution pipe 1413 and the plurality of liquid distribution pipes 142 provided on the second liquid distribution pipe 1414 are integrally formed, so that there is no connection between the liquid pipe 142 and the first liquid distribution pipe 1413. Seam, there will be no risk of leakage. It should be understood that the multiple outlet pipes 142 provided on the first liquid distribution pipe 1413 and the second liquid distribution pipe 1414 may also be formed separately. In some embodiments, the lengths of the first liquid distribution pipe 1413 and the second liquid distribution pipe 1414 are the same, and the number of the liquid outlet pipes 142 provided on the first liquid distribution pipe 1413 and the second liquid distribution pipe 1414 is the same.

Please refer to FIGS. 2 to 4 and FIGS. 6 to 8. In some embodiments, the liquid separator 140 further includes a liquid separating structure 1415. The liquid distribution structure 1415 is connected to and communicated with the first liquid distribution pipe 1413, the second liquid distribution pipe 1414 and the liquid inlet pipe 143. Specifically, the first liquid distribution pipe 1413, the second liquid distribution pipe 1414, and the liquid inlet pipe 143 are all connected to the liquid separation structure 1415. The first liquid distribution pipe 1413 and the second liquid distribution pipe 1414 are separately provided on both sides of the liquid distribution structure 1415 and the extension directions of the two are the same. In some embodiments, when the first liquid distribution pipe 1413, the second liquid distribution pipe 1414, and the liquid inlet pipe 143 are connected to the liquid distribution structure 1415, they are further reinforced by fasteners such as nuts.

Referring to FIG. 9, in some embodiments, the liquid distributing structure 1415 includes a first liquid outlet end 14153, a second liquid outlet end 14154, and a liquid inlet end 14155. The first liquid outlet 14153 and the second liquid outlet 14154 are symmetrically distributed. The first liquid outlet 14153 is connected to the first liquid distribution pipe 1413, and the second liquid outlet 14154 is connected to the second liquid distribution pipe 1414. The liquid inlet 14155 is connected to the liquid inlet pipe 143, and the liquid inlet 14155 is connected to the first liquid outlet 14153 and the second liquid outlet 14154.

Please refer to FIGS. 6 to 8 again. In some embodiments, a pressure relief structure 150 is further provided on the liquid distributor 140, and the pressure relief structure 150 is used to discharge the gas in the spray assembly 100. The pressure relief structure 150 is arranged so that the spray assembly 100 does not need to wait for the liquid to be sprayed before turning off the pressure switch 120, which avoids the problem of liquid chemical waste and/or environmental pollution. In addition, when the number of shower head assemblies 110 is multiple, only the pressure relief mechanism 152 needs to be operated to open the pressure relief port to discharge the gas in the shower head assembly 110, and there is no need to manually operate the pressure switch on each shower head assembly 110. 120 performs pressure relief, which reduces labor costs and improves pressure relief efficiency.

Please refer to FIG. 6. In some embodiments, both the first liquid distribution pipe 1413 and the second liquid distribution pipe 1414 are provided with a pressure relief structure 150. When the pressure needs to be relieved, the pressure relief structure 150 on the first liquid distribution pipe 1413 and the second liquid distribution pipe 1414 is operated, thereby opening the pressure relief ports 151 on the first liquid distribution pipe 1413 and the second liquid distribution pipe 1414. At this time, the gas in the spray assembly 100 can be discharged through the pressure relief ports 151 on the first liquid distribution pipe 1413 and the second liquid distribution pipe 1414.

Please refer to FIG. 7. In some embodiments, the pressure relief structure 150 is provided on the liquid inlet pipe 143. When pressure needs to be relieved, the pressure relief structure 150 on the liquid inlet pipe 143 is operated to open the pressure relief port 151 on the liquid inlet pipe 143. At this time, the gas in the spray assembly 100 can be discharged through the pressure relief port 151 on the liquid inlet pipe 143.

Please refer to FIG. 8. In some embodiments, the pressure relief structure 150 is provided on the liquid separation structure 1415. When the pressure needs to be relieved, the pressure relief mechanism 152 of the pressure relief structure 150 is operated, thereby opening the pressure relief port 151. At this time, the gas in the spray assembly 100 can be discharged through the pressure relief port 151.

Referring to FIGS. 9 and 10, in some embodiments, the liquid separating structure 1415 is provided with a bottom surface 14151 and a top surface 14152 arranged in a vertical direction, and the pressure relief structure 150 is provided on the bottom surface 14151. Among them, the vertical direction is the second direction Z in FIG. 4. When it is necessary to relieve pressure and exhaust, firstly open the pressure relief mechanism 152 on the liquid separating structure 1415. Since the pressure relief port 151 is provided on the bottom surface 14151, the liquid in the spray assembly 100 will flow out through the pressure relief port 151 under the action of gravity, and the gas in the liquid distributor 140 can be discharged as much as possible during the flow of the liquid. When the liquid flows out, the pressure relief mechanism 152 is closed to realize normal spraying. It is understandable that when the pressure is relieved and exhausted, a collection container can be placed under the pressure relief port 151 to collect the liquid discharged when the pressure is relieved, so as to avoid liquid waste and/or environmental pollution.

It can be understood that the positional relationship among the first liquid outlet 14153, the second liquid outlet 14154, the liquid inlet 14155, and the pressure relief structure 150 can be set according to actual needs. For example, the first liquid outlet 14153, the pressure relief structure 150, and the liquid inlet 14155 are substantially perpendicular to each other.

For another example, the second liquid outlet 14154, the pressure relief structure 150, and the liquid inlet 14155 are substantially perpendicular to each other. The above-mentioned several solutions may exist at the same time, or only one of them may exist, and the embodiment of the present application is not limited to this.

It should be noted that "A and B are approximately perpendicular" means that A and B are perpendicular, or A and B are set at a preset second included angle. The preset second included angle may be any suitable angle, for example, any angle between 85° and 95°.

Please refer to FIGS. 10 and 11. In some embodiments, the pressure relief structure 150 includes a pressure relief port 151 and a pressure relief mechanism 152. The pressure relief port 151 is provided on the liquid separator 140. The pressure relief mechanism 152 is provided at the pressure relief port 151 for opening or closing the pressure relief port 151. Before the spraying operation, the pressure relief mechanism 152 is operated to open the pressure relief port 151 so that the gas in the spray assembly 100 can be discharged through the pressure relief port 151. After the gas in the spray assembly 100 is discharged, the pressure relief mechanism 152 is operated to close the pressure relief port 151. At this time, the water pump device 130 can be turned on, and the pressure switch 120 on the spray head assembly 110 operates so that the liquid inlet flow passage 111 and the liquid outlet flow passage 112 of the spray head assembly 110 are connected, thereby realizing the spraying operation.

Compared with pressure relief by operating the pressure switch 120, the pressure relief structure 150 eliminates the need to wait for the liquid to be ejected before turning off the pressure switch 120, which avoids the problem of waste of liquid medicine and/or environmental pollution. In addition, when the number of spray head assemblies 110 is more than one, it is only necessary to operate the pressure relief mechanism 152 to open the pressure relief port 151 to discharge the gas in the spray assembly 100, and there is no need to manually operate the pressure on each spray head assembly 110 separately. The switch 120 performs pressure relief, which reduces labor costs and improves pressure relief efficiency.

Among them, the pressure relief mechanism 152 is detachably connected to the pressure relief port 151. The connection manner of the pressure relief mechanism 152 and the pressure relief port 151 can be designed in any suitable detachable connection manner. Exemplarily, the connection manner between the pressure relief port 151 and the pressure relief mechanism 152 includes at least one of the following: threaded connection or snap connection.

Please refer to FIG. 10 and FIG. 11. In some embodiments, the pressure relief mechanism 152 includes a cover portion 1521 and a connection portion 1522. The cover portion 1521 is used to block the pressure relief port 151. The connecting portion 1522 is protrudingly provided on the cover portion 1521, and the connecting portion 1522 is connected with the pressure relief port 151.

In some embodiments, the connecting portion 1522 is threaded or snap-connected with the pressure relief port 151, so as to realize a detachable connection between the pressure relief mechanism 152 and the pressure relief port 151. In some specific embodiments, the connecting portion 1522 is connected to the outer circumference of the pressure relief port 151. Exemplarily, an external thread is provided on the outer surface of the pressure relief port 151, and an internal thread is provided on the inner surface of the connecting portion 1522. The external thread and the internal thread cooperate to realize the pressure relief mechanism 152 and the pressure relief port. 151 connections.

Please refer to FIG. 10, in some embodiments, the dispenser 140 further includes a seal 160. The seal 160 is provided at the connection between the pressure relief port 151 and the pressure relief mechanism 152. When the pressure relief mechanism 152 blocks the pressure relief port 151, the seal 160 can prevent liquid from leaking from the connection between the pressure relief port 151 and the pressure relief mechanism 152, thereby improving the sealing performance of the spray assembly 100. The sealing member 160 may be a sealing ring made of elastic materials such as rubber, and the embodiment of the present application is not limited thereto.

Please refer to FIG. 10 and FIG. 11, in some embodiments, the liquid separator 140 further includes a filtering structure 170. The filter structure 170 is arranged on the liquid separation structure 1415, and is used to filter the liquid flowing out of the liquid inlet pipe 143, which can effectively reduce or prevent solid impurities from entering the main pipe 141, the water pump device 130 and the nozzle assembly 110 from the liquid inlet pipe 143, ensuring The normal operation of the spray assembly 100 improves the user experience.

In some embodiments, the filter structure 170 is detachably connected to the liquid separating structure 1415, so that the filter structure 170 can be replaced or cleaned easily. Of course, the filter structure 170 and the liquid separation structure 1415 can also be integrally injection molded to save the assembly process of the filter structure 170 and the liquid separation structure 1415 and improve the assembly efficiency of the spray assembly 100. Specifically, the filtering structure 170 and the liquid separating structure 1415 may be fixedly connected by a connection method such as a buckle.

Referring to FIGS. 10 and 11, in some embodiments, the filtering structure 170 has a first filtering part 171, a second filtering part 172 and an assembling part 173. Wherein, the first filtering part 171 is used to filter the liquid flowing out of the liquid inlet pipe 143. The second filtering part 172 is used for filtering the liquid flowing into the first liquid distribution pipe 1413 and/or the second liquid distribution pipe 1414 by the liquid separation structure 1415. The assembling part 173 is detachably connected to the liquid separating structure 1415, and the assembling part 173 is connected to the first filter part 171 and/or the second filter part 172. The above-mentioned filtering structure 170 can filter the liquid flowing out of the liquid inlet pipe 143, and filter the liquid flowing into the first liquid distribution pipe 1413 and/or the second liquid distribution pipe 1414 by the liquid separation structure 1415, thereby effectively enhancing the filtering effect .

In some embodiments, the assembling portion 173 is clamped between the pressure relief opening 151 and the pressure relief mechanism 152, and the pressure relief opening 151 cooperates with the pressure relief mechanism 152 so that the filter structure 170 is fixed on the liquid separation structure 1415.

In some embodiments, the filter structure 170 is a filter mesh. The filter screen can be a mesh structure made of any suitable material, for example, made of materials with good mechanical properties and corrosion resistance, such as aluminum, copper, steel, aluminum alloy, copper alloy, stainless steel, hard plastic, and the like. Of course, in other embodiments, the filter structure 170 may also be any suitable structure such as filter cotton, and the embodiment of the present application is not limited thereto.

In some embodiments, please refer to FIGS. 2 to 4 again. In some embodiments, the spraying system 10 further includes a flow meter 180, which is connected between the liquid inlet pipe 143 of the liquid distributor 140 and the liquid supply tank 200. between. The flow meter 180 is used to measure the flow rate of the liquid output from the liquid supply tank 200. When the water pump device 130 is working normally, the liquid from the liquid supply tank 200 can enter the water pump device 130 through the flow meter 180 and the liquid distributor 140, and then be pumped to the spray head assembly 110 by the water pump device 130, and the spray head assembly 110 sprays the liquid. Out.

In the spraying assembly, spraying system, and mobile device of the foregoing embodiment, when the gas in the spraying assembly 100 needs to be discharged, the pressure switch 120 corresponding to the water pump device 130 provided adjacent to the first end 1411 is manually operated, so that the water pump device 130 corresponds to The nozzle assembly 110 is in a pressure relief working state, that is, the inlet flow passage 111 and the exhaust flow passage 113 are connected. At this time, the gas in the spray assembly 100 can be discharged through the main pipe 141, the water pump device 130 provided adjacent to the first end 1411, and the spray head assembly 110 corresponding to the water pump device 130, thereby achieving pressure relief and exhaust.

When liquid drips from the spray head assembly 110, operate the pressure switch 120 corresponding to the water pump device 130 provided adjacent to the first end 1411, so that the spray head assembly 110 ends the pressure relief working state, that is, the inlet flow channel 111 and the exhaust flow Road 113 does not conduct. At this time, if the water pump device 130 is turned on, the pressure switch 120 can switch the spray head assembly 110 to the dripping state under the action of hydraulic pressure, that is, the inlet flow passage 111 and the outlet flow passage 112 are connected, thereby performing normal spraying. operation. This pressure relief method, especially for the spray assembly 100 with multiple spray head assemblies 110, does not need to operate the pressure switch 120 on each spray head assembly 110 separately, that is, at least part of the gas in the spray head assembly 110 can be discharged for normal spraying. Operation reduces labor costs and improves pressure relief efficiency.

Please refer to FIG. 12. FIG. 12 is a schematic flowchart of a spraying method for a mobile device according to an embodiment of the present application, which can be applied to the mobile device in the foregoing embodiment. The mobile device includes a movable platform and a spraying system arranged on the movable platform. The mobile platform includes at least one of agricultural drones, agricultural spraying vehicles, and human spraying devices. The spray system includes a spray assembly and a liquid supply tank for supplying liquid to the spray assembly. The spray assembly includes a spray head assembly, a pressure switch provided on the spray head assembly, a plurality of water pump devices, and a dispenser with a main pipe The spray head assembly has an inlet flow channel, an outlet flow channel and an exhaust flow channel, the main pipe is arranged obliquely with respect to a horizontal plane, and the main pipe has a first end and a second end that are arranged oppositely.

As shown in FIG. 12, the spraying method of the mobile device of this embodiment includes step S31 to step S33.

S31. When the pressure in the spray head assembly is less than a preset pressure threshold, the pressure switch corresponding to the water pump device connected to the first end is actuated to conduct the liquid inlet flow path and the exhaust of the corresponding spray head assembly Runner.

S32: When the pressure in the spray head assembly is greater than a preset pressure threshold, the pressure switch is actuated to conduct the inlet liquid flow channel and the outlet liquid flow channel.

S33. Control the spraying system to drip liquid through the liquid outlet flow channel.

When the pressure in the nozzle assembly is less than the preset pressure threshold, manually or automatically operate the pressure switch corresponding to the water pump device located adjacent to the first end, so that the nozzle assembly corresponding to the water pump device is in a pressure relief working state, that is, the liquid inlet The runner is connected to the exhaust runner. At this time, the gas in the spray assembly can be discharged through the main pipe, the water pump device arranged adjacent to the first end, and the nozzle assembly corresponding to the water pump device, thereby achieving pressure relief and exhaust. When liquid drips from the spray head assembly, the pressure switch corresponding to the water pump device arranged adjacent to the first end is operated, so that the spray head assembly ends the pressure relief working state, that is, the liquid inlet flow channel and the exhaust flow channel are not connected. When the pressure in the spray head assembly is greater than the preset pressure threshold, the pressure switch acts under the action of the hydraulic pressure to switch the spray head assembly to the dripping working state, that is, the inlet flow channel and the outlet flow channel are connected. The spraying system is controlled to drip liquid through the liquid outlet channel, and normal spraying operation can be carried out. This pressure relief method, especially for spray assemblies with multiple sprinkler assemblies, does not need to operate the pressure switch on each sprinkler assembly separately, that is, it can exhaust at least part of the gas in the sprinkler assembly to perform normal spraying operations, reducing manpower The cost improves the efficiency of pressure relief.

In some embodiments, a pressure relief structure is provided on the liquid dispenser. Before controlling the spraying system to drip out liquid through the liquid outlet channel, the method further includes: opening the pressure relief structure to discharge at least part of the gas of the spray assembly; and closing the pressure relief structure.

Specifically, the pressure relief structure includes a pressure relief port and a pressure relief mechanism. Before spraying, operate the pressure relief mechanism to open the pressure relief port so that the gas in the spray system can be discharged through the pressure relief port. After the gas in the spray system is discharged, the pressure relief mechanism is operated to close the pressure relief port. At this time, the water pump device can be turned on, and the pressure switch on the spray head assembly causes the liquid inlet and outlet channels of the spray head assembly to be connected, thereby realizing the spraying operation. Compared with pressure relief by operating a pressure switch, this pressure relief method does not need to wait for the liquid to be sprayed before turning off the pressure switch, which avoids the problem of waste of liquid medicine and/or environmental pollution. In addition, when the number of nozzle components is multiple, only the pressure relief mechanism needs to be operated to open the pressure relief port to discharge the gas in the nozzle components, and there is no need to manually operate the pressure switch on each nozzle component to release the pressure. Reduce labor costs and improve pressure relief efficiency.

The above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or changes within the technical scope disclosed in this application. Replacement, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A spray assembly used in a spray system, characterized in that it comprises:

The nozzle assembly has an inlet flow channel, an outlet flow channel and an exhaust flow channel for spraying operations;

A pressure switch is provided on the spray head assembly, and is used to adjust the air pressure value of the spray head assembly and/or control the dripping or stopping of the spray head assembly;

At least one water pump device, each of which is connected with at least one spray head assembly;

The liquid dispenser includes a main pipe connected between the water pump device and the liquid supply tank of the spray system for guiding the liquid in the liquid supply tank to the water pump device;

Wherein, the main pipe is arranged obliquely with respect to the horizontal plane, and the main pipe has a first end and a second end that are arranged oppositely; the pressure switch corresponding to the water pump device connected to the first end is also used for conducting The inlet flow passage and the exhaust flow passage are such that the gas in the spray assembly passes through the main pipe, the water pump device connected to the first end, the inlet flow passage and the The exhaust runner is discharged.
The spray assembly of claim 1, wherein the dispenser further comprises:

The number of liquid outlet pipes equal to that of the water pump device is connected between the water pump device and the main pipe.
The spray assembly according to claim 2, wherein the number of the liquid outlet pipes is multiple, and the plurality of liquid outlet pipes are distributed on the main pipe at symmetrical intervals.
The spray assembly according to claim 2, wherein the number of the liquid outlet pipes is multiple, and the arrangement direction of the multiple liquid outlet pipes is parallel to the arrangement direction of the multiple water pump devices.
The spray assembly according to claim 4, wherein the length of the liquid outlet pipe adjacent to the first end is smaller than the length of the liquid outlet pipe adjacent to the second end.
The spray assembly according to claim 4, wherein the liquid outlet pipe has a liquid outlet connected to the water pump device, and the arrangement direction of the liquid outlets of the plurality of liquid outlet pipes is parallel to the plurality of outlets. The arrangement direction of the water pump device.
The spray assembly of claim 2, wherein the dispenser further comprises:

The liquid inlet pipe is connected between the liquid supply tank and the main pipe.
The spray assembly according to claim 7, wherein the liquid distributor is further provided with a pressure relief structure for exhausting the gas in the spray assembly.
The spray assembly according to claim 8, wherein each of the liquid outlet pipes is provided with at least one pressure relief structure and/or the liquid inlet pipe is provided with at least one pressure relief structure.
The spray assembly according to claim 8, wherein the pressure relief structure is provided on the main pipe.
The spray assembly according to claim 8, wherein the pressure relief structure comprises:

The pressure relief port is arranged on the liquid distributor;

The pressure relief mechanism is arranged at the pressure relief port and is used to open or close the pressure relief port.
The spray assembly of claim 11, wherein the pressure relief mechanism comprises:

The cover part is used to block the pressure relief port;

The connecting part is projected on the cover part and connected with the pressure relief port.
The spray assembly of claim 11, wherein the dispenser further comprises:

The seal is arranged at the connection between the pressure relief port and the pressure relief mechanism.
The spray assembly according to claim 8, wherein the main pipe comprises:

The first liquid distribution pipe and the second liquid distribution pipe are symmetrically distributed, and the first liquid distribution pipe and the second liquid distribution pipe are respectively connected with at least one liquid outlet pipe.
The spray assembly of claim 14, wherein the dispenser further comprises:

The liquid distribution structure is connected to and communicated with the first liquid distribution pipe, the second liquid distribution pipe and the liquid inlet pipe.
The spray assembly according to claim 14, wherein the pressure relief structure is provided on both the first liquid distribution pipe and the second liquid distribution pipe.
The spray assembly according to claim 15, wherein the pressure relief structure is provided on the liquid separation structure.
The spray assembly according to claim 17, wherein the liquid separation structure has a bottom surface and a top surface in a vertical direction, and the pressure relief structure is provided on the bottom surface.
The spray assembly of claim 15, wherein the liquid separation structure comprises:

Symmetrically distributed first liquid outlet and second liquid outlet, the first liquid outlet is connected with the first liquid distribution pipe, and the second liquid outlet is connected with the second liquid distribution pipe;

The liquid inlet is connected with the liquid inlet pipe and is connected to the first liquid outlet and the second liquid outlet.
The spray assembly according to claim 19, wherein the first liquid outlet end, the pressure relief structure, and the liquid inlet end are substantially perpendicular to each other; and/or,

The second liquid outlet end, the pressure relief structure and the liquid inlet end are substantially perpendicular to each other.
The spray assembly of claim 17, wherein the dispenser further comprises:

The filtering structure is arranged on the liquid separation structure and is used for filtering the liquid flowing out of the liquid inlet pipe.
22. The spray assembly of claim 21, wherein the filtering structure is detachably connected to the liquid distributing structure.
The spray assembly of claim 21, wherein the filter structure has:

The first filter part is used to filter the liquid flowing out of the liquid inlet pipe;

The second filter part is used to filter the liquid flowing into the first liquid distribution pipe and/or the second liquid distribution pipe by the liquid separating structure;

The assembling part is detachably connected with the liquid separating structure and connected with the first filter part and/or the second filter part.
The spray assembly of claim 21, wherein the filtering structure comprises:

Filter.
A spraying system is characterized in that it comprises:

The spray assembly according to any one of claims 1-24;

The liquid supply tank is in communication with the liquid inlet pipe of the spray assembly;

The catheter is connected with the water pump device and the spray head assembly of the spray assembly, and is used to deliver the liquid pumped from the water pump device to the spray head assembly.
A mobile device, characterized in that it comprises:

Mobile platform

The spraying system of claim 25, installed on the movable platform.
The mobile device according to claim 26, wherein the movable platform is at least one of an agricultural drone, an agricultural spraying vehicle, and a human spraying device.
A spraying method for a mobile device, the mobile device comprising a spraying system, characterized in that the spraying system comprises a spraying assembly and a liquid supply tank for supplying the spraying assembly, the spraying assembly includes a spraying head assembly, The pressure switch on the spray head assembly, a plurality of water pump devices, and a dispenser with a main pipe, the spray head assembly has a liquid inlet flow channel, a liquid flow channel and an exhaust flow channel, and the main pipe is arranged obliquely with respect to the horizontal plane, The main pipe has a first end and a second end opposite to each other; the method includes:

When the pressure in the nozzle assembly is less than the preset pressure threshold, the pressure switch corresponding to the water pump device connected to the first end operates to conduct the inlet and outlet flow channels of the corresponding nozzle assembly ；

When the pressure in the spray head assembly is greater than a preset pressure threshold, the pressure switch is actuated to conduct the inlet flow channel and the outlet flow channel;

The spraying system is controlled to drip liquid through the liquid outlet channel.
The spraying method of a mobile device according to claim 28, wherein a pressure relief structure is provided on the liquid distributor, and before the control of the spraying system to drip liquid through the liquid outlet channel, the method further comprises :

Open the pressure relief structure to discharge at least part of the gas of the spray assembly;

Close the pressure relief structure.
The spraying method of a mobile device according to claim 28 or 29, wherein the mobile device comprises a movable platform, and the movable platform is at least one of an agricultural drone, an agricultural spraying vehicle, and a human spraying device. Kind.