CN112218796A

CN112218796A - Sprinkling system and agricultural plant protection machine

Info

Publication number: CN112218796A
Application number: CN201980034232.XA
Authority: CN
Inventors: 舒展; 卢绰莹
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd; SZ DJI Innovations Technology Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2021-01-12
Also published as: WO2021035745A1

Abstract

A sprinkler system (100) and an agricultural plant protection machine comprising: the water distributor comprises a water tank (10), wherein a water distributor (40) is connected to the water tank (10), and the water distributor (40) is communicated with the water tank (10); the mounting rack (20), a plurality of first connecting parts are arranged on the mounting rack (20); and the pump group (30) comprises a plurality of water pumps (31), each water pump (31) is communicated with the corresponding water outlet on the water separator (40), each water pump (31) is provided with a second connecting part, the first connecting part and the second connecting part are matched with each other to hang the water pump (31) on the mounting frame (20), and the water pumps (31) are connected with the mounting frame (20) in a quick-release manner through the first connecting part and the second connecting part.

Description

Sprinkling system and agricultural plant protection machine

Technical Field

The embodiment of the invention relates to the technical field of agricultural plant protection spraying, in particular to a spraying system and an agricultural plant protection machine.

Background

In agricultural plant protection machines such as agricultural unmanned aerial vehicle, pesticide spray truck, manpower sprinkler spray application field, efficiency is the problem that needs to pay close attention to always. In addition to the spraying efficiency during the spraying process, once a fault occurs during the spraying process, the repair or replacement speed of the spraying system also affects the efficiency, valuable busy farming time is delayed, and in serious cases, the optimal time for pesticide spraying can be missed, so that irreparable economic loss is caused.

Plant protection unmanned aerial vehicle sprinkling system among the prior art is not convenient for dismantle, and usually when the field operation, sprinkling system breaks down occasionally, and it is very inconvenient to maintain, and sprinkling system's pump package comprises a plurality of water pumps usually, and a fixed pump package is constituteed to a plurality of water pumps, and the pump package is whole to be installed on the organism again.

The dismantlement between a plurality of water pumps is inconvenient, so, in case one of them water pump breaks down, then need take off whole pump package from the organism, because the weight of whole pump package is heavier, the operation is inconvenient to, because whole pump package is whole to be taken off, only can the sprinkler system work after current trouble water pump trouble is solved, can seriously influence like this and spray efficiency.

Disclosure of Invention

The embodiment of the invention provides a spraying system and an agricultural plant protection machine, which are convenient to assemble and maintain, save maintenance time and further improve spraying efficiency.

The spraying system provided by the first aspect of the invention comprises a water tank, wherein a water separator is connected to the water tank, and the water separator is communicated with the water tank;

the mounting frame is provided with a plurality of first connecting parts;

and the pump set comprises a plurality of water pumps, each water pump is respectively communicated with the corresponding water outlet on the water separator, each water pump is provided with a second connecting part, the first connecting part is matched with the second connecting part to hang each water pump on the mounting frame, and the water pumps are connected with the mounting frame in a quick-dismantling manner through the first connecting part and the second connecting part.

The invention provides an agricultural plant protection machine in a second aspect, which comprises a machine frame, a spray head and a spraying system, wherein the spraying system comprises:

the water distributor is communicated with the water tank;

the mounting frame is provided with a plurality of first connecting parts;

Based on the above, according to the spraying system and the agricultural plant protection machine provided by the invention, each water pump in the pump set is hung on the mounting frame in a quick-release manner, so that when one water pump fails, only the failed water pump needs to be taken down for maintenance or replacement, the whole pump set does not need to be taken down, the operation is convenient, and other normal water pumps can still continue to work during the maintenance period when the failed water pump is taken down, and the spraying efficiency can be ensured to a certain extent.

Drawings

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

FIG. 1 is a front view of a sprinkler system and a frame according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a perspective view of a sprinkler system and a frame according to an embodiment of the present invention;

FIG. 4 is a first schematic view of the mounting of the pump unit and the mounting bracket of the sprinkler system according to the first embodiment of the present invention;

FIG. 5 is a second schematic view of the mounting bracket and pump set of the sprinkler system of the present invention;

FIG. 6 is a third schematic view of the mounting of the pump unit and the mounting bracket of the sprinkler system provided in the embodiments of the present invention;

FIG. 7 is a schematic diagram of a water tank of a sprinkler system according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a flow meter of a sprinkler system provided in accordance with an embodiment of the present invention;

FIG. 9 is a schematic structural view of a sprinkler head of the sprinkler system provided in the embodiments of the present invention;

fig. 10 is a schematic structural view of a check valve at a tank outlet of a sprinkler system according to an embodiment of the present invention.

Detailed Description

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

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

Furthermore, the term "coupled" is intended to include any direct or indirect coupling. Thus, if a first device couples to a second device, that connection may be through a direct connection, or through an indirect connection via other devices.

It should be understood that the term "and/or" is used herein only to describe an association relationship of associated objects, and means that there may be three relationships, for example, a1 and/or B1, which may mean: a1 exists alone, A1 and B1 exist simultaneously, and B1 exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Example one

FIG. 1 is a front view of a sprinkler system and a frame according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of FIG. 1; FIG. 3 is a perspective view of a sprinkler system and a frame according to an embodiment of the present invention; FIG. 4 is a first schematic view of the mounting of the pump unit and the mounting bracket of the sprinkler system according to the first embodiment of the present invention; FIG. 5 is a second schematic view of the mounting bracket and pump set of the sprinkler system of the present invention; fig. 6 is a third schematic view illustrating the installation of the pump unit and the mounting bracket of the sprinkler system according to the embodiment of the present invention. Referring to fig. 1 to 6, a spraying system 100 provided in this embodiment includes: water tank 10, mounting bracket 20, pump package 30.

Wherein, the water separator 40 is connected on the water tank 10, and the water separator 40 is communicated with the water tank 10. The pump unit 30 includes a plurality of water pumps 31, and each water pump 31 is respectively communicated with a corresponding water outlet on the water separator 40.

Specifically, the water tank 10 may be used to contain a liquid to be sprayed, and the liquid to be sprayed may include a liquid medicine mixed with pesticide, clean water, and the like, which is not limited in this embodiment. Fig. 7 is a schematic structural view of a water tank of a sprinkler system according to an embodiment of the present invention. As shown in fig. 7, further, the water tank 10 may be provided with scale marks 11, and the scale marks may be made of transparent material, or the whole of the place where the scale is arranged may be a transparent shell, and the scale marks are arranged on the transparent shell in any manner such as ink, protrusion, and depression, so as to facilitate a user to observe the amount of liquid inside the water tank 10 outside the water tank 10.

The water separator 40 may include a liquid inlet pipe 41 and a plurality of liquid outlet pipes 42, the water separator 40 is communicated with the water tank 10 through the liquid inlet pipe 41, and a water outlet of each liquid outlet pipe 42 is communicated with a corresponding water pump 31, so that a single-path pipe is expanded to multiple paths. Taking fig. 4 as an example, the pump set 30 may include four water pumps 31, a liquid outlet pipe 42 may be connected to the bottom of each water pump 31, one end of a liquid inlet pipe 41 of the water separator 40 is connected to the water tank 10, and the other end of the liquid inlet pipe 41 is connected to the four liquid outlet pipes 42. The top of the water pump 31 can be connected with the nozzle 50 through the nozzle connecting water pipe 501, and when the water pump is in operation, the water pump 31 is started to provide a larger negative pressure suction force, so that the liquid in the water tank 10 is pumped into the water pump through the liquid inlet pipeline 41 and the four liquid outlet pipelines 42 respectively and is sprayed out from the nozzle of the nozzle 50 through the water pipes. It should be noted that, in this embodiment, the number of the water pumps 31 and the liquid outlet pipes 42 is only an example, and those skilled in the art may design other numbers of the water pumps 31 and the liquid outlet pipes 42 according to actual situations.

The quick disassembly can be realized by adopting a threaded extrusion joint between the liquid inlet pipeline 41 of the water separator 40 and the water tank 10, the quick disassembly can also be realized by adopting a threaded extrusion joint between the liquid outlet pipeline 41 of the water separator 40 and each water pump 31, and the quick disassembly is convenient and the sealing is reliable by adopting the threaded extrusion joint for connection.

In this embodiment, since the spray head 50 sprays the liquid downward, the water pipe connected to the spray head 50 needs to be bent downward. The liquid outlet pipeline 42 of the water separator 40 is arranged at the bottom of the water pump 31, and the water pipe connected with the spray head 50 is arranged at the top of the water pump 31, so that the water pipe connected with the spray head 50 is arranged at the position which is approximately at the same height as the water tank 10, the vertical height is not excessively increased, the arrangement space is effectively saved, and the pipeline layout is convenient.

Be equipped with a plurality of first connecting portions on the mounting bracket 20, be equipped with the second connecting portion on every water pump 31, first connecting portion and the cooperation of second connecting portion are in order to hang every water pump 31 and establish on mounting bracket 20 to water pump 31 is connected with the mounting bracket 20 quick detach through first connecting portion and second connecting portion 31.

Specifically, the mounting bracket 20 may include a first mounting bracket 20a for connecting to an external device, and a second mounting bracket 20b for hanging the water pump 31. The material of the first mount 20a and/or the second mount is carbon fiber. Wherein, external equipment can refer to the frame 200 of agricultural plant protection machine, and agricultural plant protection machine specifically can refer to agricultural unmanned aerial vehicle, pesticide spray truck, manpower sprinkler etc.. That is, the first and

second mounts

20a and 20b may be made of a carbon fiber material, or one of them may be made of a carbon fiber material. The carbon fibers have the advantages of high strength and light weight, and can not only provide reliable installation for the water pump 31, but also meet the requirement of light weight.

The first and

second mounts

20a and 20b may be integrally formed or assembled separately. When the first mounting bracket 20a and the second mounting bracket 20b are assembled separately, the first mounting bracket 20a and the second mounting bracket 20b may be connected by bolts, screws, buckles, or the like, or assembled by welding. The present embodiment is not limited, and may be specifically selected according to actual needs.

The first mounting brackets 20a may include two, and the two first mounting brackets 20a may be symmetrically disposed at both ends of the second mounting bracket 20b, respectively, and each water pump 31 is located between the two first mounting brackets 20 a. A plurality of water pumps 31 may be arranged in a line on the second mounting bracket 20b, and the distance between each two water pumps 31 may be equal, thereby maintaining the balance of the system as much as possible.

The second mounting bracket 20b can be plate-shaped, and because the volume of water pump 31 is great, the second mounting bracket 20b is plate-shaped, can minimize the thickness of first mounting bracket 20a, and then reduce the holistic thickness of arranging of pump package 30 to practice thrift the space, and the second mounting bracket 20b can hug closely the setting of water tank 10 as far as possible, can make the structure compacter from this, and space utilization is good.

One or more lightening holes 201b can be formed in the second mounting frame 20b, and the lightening holes 201b can be uniformly distributed, so that the second mounting frame 20b is symmetrical in structure, and the balance of the whole pump unit 30 after being mounted is guaranteed.

The thickness of the first mounting bracket 20a may be greater than that of the second mounting bracket 20b, and the first mounting bracket 20a may be a skeleton-shaped frame, specifically, a groove may be formed by recessing one surface of the first mounting bracket 20a toward the other surface, and a plurality of reinforcing ribs p may be disposed in the groove, and each reinforcing rib p may be formed in different shapes, for example, a circle, a triangle, a rectangle, and the like. The first mounting bracket 20a of skeleton shape can be when effectively guaranteeing the intensity demand, and the quality is also lighter, satisfies the lightweight demand.

Further, the first mounting bracket 20a may be detachably connected to an external device (e.g., a frame 200 of an agricultural plant protection machine). The first mounting bracket 20a may be connected to the frame 200 by bolts, screws, or fasteners. From this, water pump 31 is installed on second mounting bracket 20b, second mounting bracket 20b and each water pump 31 pass through first mounting bracket 20a detachable installation on external equipment, and each water pump 31 is because hang through the mode of quick detach and establish on second mounting bracket 20b, thereby, each water pump 31 also can be dismantled alone from second mounting bracket 20b, perhaps, pump package 30 that each water pump 31 is constituteed also can be dismantled from external equipment wholly together with mounting bracket 20, the user can handle in a flexible way according to actual need, water pump 31 can be dismantled alone, or pump package 30 can wholly be dismantled, can be convenient for assemble and maintain spraying system, save maintenance duration, both can dismantle a water pump alone, also can dismantle whole pump package through unscrewing, in order to adapt to different demands.

Further, the top of the first mounting bracket 20a may be formed with a supporting bracket 201a, and the supporting bracket 201a may include an upright portion 2011a, a transverse portion 2012a, and a diagonal portion 2013a connected between the upright portion 2011a and the transverse portion 2012 a. The vertical portion 2011a is connected to the top of the first mounting bracket 20a (either detachably or non-detachably), and extends away from the water pump 31. Lateral portion 2012a is located above water pump 31 and is perpendicular to vertical portion 2011a and extends along the side of water pump 31. Slant portion 2013a is connected between vertical portion 2011a and horizontal portion 2012a to make vertical portion 2011a, horizontal portion 2012a, slant portion 2013a three enclose into the triangular frame, first mounting bracket 20a specifically is connected with external equipment's frame 200 through support frame 201a, and is specific, sets up the connecting point at two summits of support frame 201a and is connected with frame 200, and the triangle-shaped is stable geometry, from this, can effectively guarantee the connection stability of system.

The sprinkler system that this embodiment provided, because every water pump in the pump package all hangs through the quick detach mode and establishes on the mounting bracket, so, when a water pump broke down, only need with this trouble water pump take off the maintenance or change can, and need not to take off whole pump package, convenient operation to, during taking off trouble water pump and maintaining, other normal water pump still can continue work, can guarantee to a certain extent and spray efficiency.

The terms "upper" and "lower" are used for describing relative positions of the structures in the drawings, and are only for the sake of clarity, but not for limiting the scope of the embodiments of the present invention, and the changes or adjustments of the relative relationships thereof are also considered to be the scope of the present invention without substantial technical changes.

Example two

In this embodiment, on the basis of the first embodiment, a specific installation manner of the water pump 31 is further provided, as shown in fig. 4, the first connecting portion may be a clamping hole 21, and the second connecting portion may be a clamping member 311 engaged with the clamping hole 21.

Specifically, the fastening hole 21 may be formed in the second mounting frame 20b, and the fastening hole 21 may be formed by forming a hole in the second mounting frame 20b to form the fastening hole 21, or may be formed when the second mounting frame 20b is integrally formed, for example, the second mounting frame 20b is integrally injection-molded, and when the injection mold is designed, a protrusion is provided at a position where the fastening hole 21 is to be formed, and when the injection mold is injected, the injection material flows toward the mold, and the protrusion blocks the injection material from being injected, so that the corresponding fastening hole 21 is formed. Of course, the forming manner of the card hole 21 can also be realized by other realizable process manners, and this embodiment is not exemplary.

The retaining member 311 may be detachably or non-detachably connected to the water pump 31, for example, the retaining member 311 may be connected to the water pump 31 by any method such as welding, screwing, riveting, or the retaining member 311 may be integrally formed with the water pump 31. In addition, the catch 311 may be a protrusion formed on the water pump 31, wherein a specific shape of the protrusion includes at least one of: convex column, couple, boss.

After the retaining member 311 of the water pump 31 extends into the retaining hole of the second mounting bracket 20b, the water pump falls down due to the gravity, the retaining member 311 of the water pump 31 abuts against the bottom of the retaining hole 21 of the second mounting bracket 20b, and the water pump 31 is then hung on the second mounting bracket 20b, that is, the water pump 31 is hung on the mounting bracket 20. When the single water pump 31 needs to be taken out of the mounting frame 20, the water pump 31 only needs to be lifted slightly, and then the water pump 31 is taken out in the direction away from the clamping hole 21, so that the operation is convenient.

In other embodiments, the first connecting portion may also be the retainer 311, and the second connecting portion may be the card hole 21 engaged with the retainer 311. The specific forming manner and the setting manner of the retaining member 311 and the retaining hole 21 may be the same as those of the above embodiments, and are not described herein again. It should be noted that, when the first connecting portion on the mounting bracket 20 is the retaining member 311, and the second connecting portion on the water pump 31 is the retaining hole 21, after the retaining member 311 on the second mounting bracket 20b extends into the retaining hole 21 on the water pump 31, the water pump 31 falls due to the action of gravity, the top of the retaining hole 21 on the water pump 31 will abut against the retaining member 311 on the second mounting bracket 20b, and the water pump 31 is hung on the second mounting bracket 20b, that is, the water pump 31 is hung on the mounting bracket 20. When the single water pump 31 needs to be taken out of the mounting frame 20, the water pump 31 only needs to be lifted slightly, and then the water pump 31 is taken out in the direction away from the clamping piece 311, so that the operation is convenient.

EXAMPLE III

In this embodiment, on the basis of the second embodiment, as shown in fig. 4 and fig. 6, the card hole 21 may include a large hole portion 211 and a small hole portion 212 which are communicated with each other, the large hole portion 211 is used for the card holder 311 to extend into, and the small hole portion 212 is used for the card holder 311 to mount. It is understood that when the catching hole 21 is formed on the second mounting bracket 20b and the catching piece 311 is formed on the water pump 31, the large hole portion 211 may be positioned above the small hole portion 212. When the fastening hole 21 is formed on the water pump 31 and the fastening member 311 is formed on the second mounting bracket 20b, the small hole portion 212 is located above the large hole portion 211.

Specifically, in the embodiment, since the large hole portion 211 does not need to be matched with the retaining member 311, and only a space is needed to be provided for the retaining member 311 to extend into, there is no special requirement for the specific shape of the large hole portion 211, for example, it may be circular, square, triangular, etc. The small hole portion 212 may preferably be a long hole, and the small hole portion 212 may extend in a direction away from the large hole portion 211, so that the small hole portion 212 is a long hole capable of guiding the retaining member to be clamped into a preset position on one hand and providing a space for the retaining member 311 to be pulled out of the clamping hole on the other hand, which is convenient for operation. Of course, the aperture portion 212 may have other shapes, which are not illustrated here.

In the present embodiment, the aperture of the large hole portion 211 may be greater than or equal to the maximum outer diameter of the retainer 311, thereby facilitating the retainer 311 to protrude into the card hole without obstruction. The aperture of the small hole portion 212 may be equal to the minimum outer diameter of the retaining member 311, when the small hole portion 212 is a long hole, the aperture of the small hole portion 212 specifically refers to the width of the long hole, and the aperture of the small hole portion 212 is equal to the minimum outer diameter of the retaining member 311, so that the retaining member 311 is stably retained in the small hole portion 212, and when the agricultural plant protection machine is in a moving process or other power devices on the agricultural plant protection machine work, vibration caused by the vibration does not affect the stability of the retaining member 311 in the retaining hole 21.

Further, a driving device for driving the water pump 31 to operate may be disposed above the water pump 31. The drive means is preferably an electric motor 32. Preferably, the motor of each water pump 31 is arranged above the water pump 31, so that water leakage when the water pump 31 is damaged can be avoided, leaked liquid enters the motor to damage the motor, and the purpose of protecting the motor can be achieved. The catching piece 311 and the catching hole 21 may be elastically contacted. And then can prevent the power plant on the agricultural plant protection machine or the vibration that drives the water pump 31 during operation of motor from influencing the installation stability of water pump 31, through holding a 311 and calorie hole 21 elastic contact, for example, can set up the rubber spare between a 311 and a 21 card hole of holding, and then improve the damping performance between the two, the power plant of agricultural plant protection machine and the vibration that the operation of water pump 31 motor brought, because hold the elastic contact between a 311 and the calorie hole 21 and greatly reduced and hold a 311 and rock in calorie hole 21, the risk of jumping out from the calorie hole 21 even of holding.

In order to realize the elastic contact between the holding member 311 and the holding hole 21, specifically, the holding member 311 may be a rubber member; alternatively, the outer wall of the holding member 311 has a rubber layer, and the holding member 311 may use a rigid member as a base, and the rubber layer is disposed on the outer wall of the rigid base. After the clamping member 311 is clamped into the clamping hole 21, the rubber layer of the clamping member 311 is in pressing contact with the clamping hole, and the friction is large, so that the clamping member 311 can be effectively prevented from shaking to be separated from the clamping hole 21.

Of course, the inner side wall of the card hole 21 may have a rubber layer. Two-layer rubber layer contact, and then more effectively improve damping performance, improve the stability after the water pump 31 installation.

Example four

In this embodiment, on the basis of the third embodiment, as shown in fig. 4, the holding member 311 includes a holding portion 311a for cooperating with the small hole portion 212, and a limiting portion 311b for preventing the holding member 311a from coming out of the small hole portion 212. Specifically, the holding portion 311a may be cylindrical, rectangular parallelepiped or the like, and the holding member 311a may be a boss coaxial with the holding portion 311a, or may be any structure of a rod, a sheet, a bar or a block perpendicular to or substantially perpendicular to the holding portion 311a, as long as the holding portion 311a is prevented from coming out of the small hole portion 212, which is not illustrated in this embodiment.

It should be noted that, the holding portion 311a described in the present embodiment coming out of the small hole portion 212 means coming out of the small hole portion 212 directly, not coming out through the large hole portion 211.

Preferably, the cross section of the limiting portion 311b may be circular, and the cross section of the limiting portion 311b may be larger than the cross section of the holding portion 311a, so as to prevent the holding portion 311a from coming off. The two limiting portions 311b may include two limiting portions, and the two limiting portions are respectively located at two ends of the retaining portion to form a structure similar to a dumbbell shape, so that the retaining member 311 cannot be disengaged from the retaining hole 21 in the thickness direction of the mounting bracket 20, and only can be disengaged from the large hole portion 211, that is, when the water pump 31 needs to be taken, the water pump 31 can be disengaged from the mounting bracket 20. It is understood that, in order to facilitate the water pump 31 to be taken out, that is, the catching piece 311 can be pulled out from the large hole portion 211, the large hole portion 211 should be able to completely receive the stopper portion 311b therethrough.

In this embodiment, the position-limiting portion 311b and the holding portion 311a may be detachably connected or non-detachably connected, or integrally formed. Specifically, for example, when the limiting portion 311b is detachably connected to the retaining portion 311a, when the water pump 31 is taken out, the whole retaining member 311 can be directly taken out from the retaining hole, or the limiting portion 311b is disconnected from the retaining portion 311a, so that the water pump 31 can be taken out from the mounting bracket 20, and the operation mode is various. When the limiting portion 311b and the retaining portion 311a are connected together in an undetachable manner, such as by welding, or integrally formed, the retaining member 311 has a stable structure, so that the loosening of the parts of the retaining member 311 does not occur, and the system safety is improved. In addition, when the retaining member 311 is an integrally formed member, the processing cost is low, which is beneficial to saving the cost. A person skilled in the art can select a connection manner between the limiting portion 311b and the holding portion 311a according to specific requirements, and the embodiment is not limited.

In addition, it should be noted that, when the limiting portions 311b are detachably connected to the retaining portions 311a, for example, they are screwed together, for example, one of the limiting portions 311b and the retaining portion 311a forms a bolt, and the other limiting portion 311b can be a nut and screwed on the bolt, in such a structure, the clamping hole 21 can be a round hole without distinguishing the large hole portion 211 and the small hole portion 212, and when the water pump 31 needs to be taken down, the corresponding nut (the limiting portion 311b) can be directly screwed off from the bolt, and then the bolt can be withdrawn from the clamping hole 21.

EXAMPLE five

The present embodiment is further based on any one of the first to fourth embodiments. The head 50 may include a head main body 51 connected to the head connection water pipe 501 and a nozzle 52 connected to a distal end of the head main body 51 for spraying the liquid medicine. One water pump 31 may be connected to a plurality of spray heads 50, and a plurality of spray heads 50 may constitute a spray head assembly. The nozzle connection water pipe 501 connected to one water pump 31 may include one water inlet pipe 5011 and two or more water outlet pipes 5012, one end of the water inlet pipe 5011 may be communicated with the water pump 31, and the two or more water outlet pipes 5012 are led out from the other end of the water inlet pipe 5011 to be connected to each nozzle 50, so as to realize that one water pump 31 controls a plurality of nozzles 50.

Fig. 9 is a schematic structural diagram of a nozzle of a spraying system according to an embodiment of the present invention. As shown in fig. 1 and 9, at least two nozzles 50 may be connected to a terminal of one outlet pipe 5012 of the nozzle connection pipe 501, and as shown in fig. 9, two nozzles 50 may be connected to a terminal of one outlet pipe 5012, and arrangement axes of the two nozzles 50 are substantially perpendicular, so that the two nozzles 50 may spray in two mutually perpendicular directions, respectively, thereby realizing multi-directional spraying.

Further, in order to realize that the plurality of nozzles 50 can be independently controlled, a valve device for switching on or off the liquid spraying channel of each nozzle 50 can be arranged in the liquid spraying channel of each nozzle 50, each nozzle 50 is independently controlled, each nozzle 50 does not need to correspond to one water pump 31, the number of the water pumps 31 can be effectively reduced, the cost is saved, each nozzle 50 can be independently controlled, and the corresponding nozzle 50 can be selected to be switched on or switched off according to specific spraying requirements.

Connect shower nozzle of shower nozzle 50 and connect water pipe 501 and can be the hose to in a flexible way arrange shower nozzle 50's position, perhaps shower nozzle connection water pipe 501 is the hard tube, shower nozzle connection water pipe 501 can with water pump 31 rotatable coupling, thereby adjust the position of connecting shower nozzle 50 on shower nozzle connection water pipe 501, and then realize diversified spraying.

As shown in fig. 9, the inner nozzle hole of the nozzle 52 may be tapered, and the cross-sectional dimension of the nozzle hole near the spraying end is larger than the cross-sectional dimension far from the spraying end, so that the liquid medicine sprayed from the nozzle 52 can be sprayed in a disc-shaped manner, thereby effectively enlarging the spraying area and improving the spraying efficiency. Of course, as an alternative, the inner nozzle hole of the nozzle 52 may also be in an inverted cone shape, the cross-sectional dimension of the nozzle hole near the spraying end is smaller than the cross-sectional dimension far from the spraying end, and the inner nozzle hole of the nozzle 52 may also be in other shapes, for example, a circle, a square, etc., and this embodiment is not particularly limited, and may be specifically selected according to the spraying requirements of specific crops.

Further, the head main body 51 may be detachably connected to the head connection water pipe 501, and as shown in fig. 9, the nozzle 52 may be detachably connected to the head main body 51. The connection mode of the spray head connecting water pipe 501, the spray head main body 51 and the spray nozzle 52 can be the same as the quick-release connection mode of the water distributor 40, namely, the quick release is realized by adopting a threaded extrusion joint, and the quick-release water distributor has the advantages of convenient assembly and disassembly and reliable sealing. Of course, it is understood that the nozzle connecting water pipe 501 may be connected to the nozzle main body 51 and the nozzle 52 in other quick-release manners, and is not limited thereto.

In the present embodiment, as shown in fig. 9, at least two different types of nozzles 52 may be included in one sprinkler system 100, and the head main body 51 may be selectively coupled to one of the at least two different types of nozzles 52. Nozzle 52 can be dismantled with shower nozzle main part 51 and be connected, it is concrete, nozzle 52 can adopt the quick detach form to dismantle with shower nozzle main part 51 and be connected, can have joint portion on the shower nozzle main part 51, can have on the nozzle 52 with joint portion complex cooperation portion, during the installation, nozzle 52 can be rotatory with corotation direction, make cooperation portion and joint portion joint, realize being connected of nozzle 52 and shower nozzle main part 51, and when nozzle 52 is taken off to needs, only with reversal direction rotatory nozzle 52, can break away from cooperation portion from joint portion, realize nozzle 52 and shower nozzle main part 51's quick detach. Of course, the head main body 51 may have a fitting portion and the nozzle 52 may have a snap-in portion, and this function may be achieved similarly.

Two different types of nozzles 52 may include: nozzles 52 having different orifice diameters, nozzles 52 having different orifice shapes, and the like. When the user sprays crops by using the spraying system, different nozzles 52 can be selected to spray according to the types of the crops sprayed currently, and therefore the universality of the spraying system can be improved.

EXAMPLE six

In this embodiment, on the basis of any one of the first to fifth embodiments, further, fig. 10 is a schematic structural diagram of a check valve at a water outlet of a water tank of a spraying system provided in an embodiment of the present invention. As shown in fig. 2 and 10, a check valve 60 for connecting the water tank 10 and the water pump 31 is provided at the water outlet of the water tank 10, and the check valve 60 may include a valve body 61 and a valve base 62. The relative state of the valve body 61 and the valve base 62 may include a butted state and a separated state; a valve element 63 is movably disposed in the valve body 61, a fluid passage is formed between the valve body 61 and the valve base 62 in a butt state, and the valve element 63 seals the fluid passage 65 in a separation state.

Specifically, the top pillar 621 is disposed on the valve base 62, and when the valve element 63 is in a separated state, the valve element 63 seals an opening 64 communicating between the valve body 61 and the valve base 62, so as to block the liquid flow channel 65 and prevent the liquid from flowing from the water tank 10 to the water pump 31, the valve element 63 may be an elastic sealing element as a whole, or a sealing ring is disposed on an outer side wall of the valve element 63, so as to achieve the purpose of sealing the liquid flow channel 65 by the valve element 63. When the valve body 61 is inserted into the valve base 62, the top pillar 621 of the valve base 62 abuts against the valve core 63 to lift the valve core 63, so that the valve core 63 is separated from the opening 64, the fluid flow channel 65 is communicated, and the fluid can flow from the water tank 10 to the water pump 31.

Further, an axial spring 66 may be connected to the spool 63, and in the disengaged state, the axial spring 66 may maintain the spool 63 at the position of the opening 64, and in the engaged state, the top pillar 621 pushes the spool 63 open against the elastic force of the axial spring 66. When the water tank 10 is pulled out from the check valve 60, the valve body 61 is separated from the valve base 62, and the valve core 63 falls to the opening 64 under the elastic restoring force of the axial spring 66 to seal the liquid flow channel 65, so that the liquid (liquid medicine) is prevented from flowing out, and the liquid medicine is not wasted.

In addition, fig. 8 is a schematic structural diagram of a flow meter of a spraying system provided in an embodiment of the present invention; as shown in fig. 2 and 8, a flow meter 70 for detecting the spray flow rate may be provided at a lower portion of the valve base 62, the flow meter 70 communicating with the flow channel 65 inside the valve base 62. The flow meter detects the flow in the liquid flow channel 65 to obtain the corresponding spraying flow, which can help the user to control the spraying flow. Preferably, the flow meter 70 can be connected to the valve base 62 using quick disconnect fittings to allow for quick replacement or maintenance of the flow meter 70.

EXAMPLE seven

In this embodiment, on the basis of any one of the first to sixth embodiments, a liquid level meter (not shown in the figure) for detecting a water level in the water tank 10 may be further disposed in the water tank 10, and specifically may be disposed at a bottom position of the water tank 10, so that by detecting the water level in the water tank 10, the amount of the remaining liquid medicine in the water tank 10 can be clearly known, which is helpful for a user to know whether the liquid medicine in the water tank 10 is sufficient, and to add the liquid medicine in time.

As shown in fig. 2, a strainer 80 may be provided at the top opening of the water tank 10, and the strainer 80 covers the top opening of the water tank 10 and is detachably coupled to the water tank 10. The top of the water tank 10 is provided with a filter screen 80, which can effectively prevent dust from entering from the opening of the water tank 10 and protect the spraying system. In addition, the filter screen 80 may be detachable to facilitate cleaning of the filter screen 80.

According to the spraying system provided by the embodiment of the invention, each component is assembled in a modular design and quick-release mode, so that the maintenance or replacement of each component is facilitated, the spraying efficiency is effectively improved, and the universality is improved.

Example eight

This embodiment provides an agricultural plant protection machine, and agricultural plant protection machine in this embodiment can include agricultural unmanned aerial vehicle, pesticide spray truck, manpower sprinkler etc. Specifically, as shown in fig. 1-6, the agricultural plant protection machine includes a frame 200, a spray head 50, and a spraying system 100, wherein the spraying system 100 includes: water tank 10, mounting bracket 20, pump package 30.

Specifically, the water tank 10 may be used to contain a liquid to be sprayed, and the liquid to be sprayed may include a liquid medicine mixed with pesticide, clean water, and the like, which is not limited in this embodiment. Fig. 7 is a schematic structural view of a water tank of a sprinkler system according to an embodiment of the present invention. As shown in fig. 7, further, the water tank 10 may be provided with scales, and the scale marks may be made of transparent material, or the scale positions may be arranged as a whole as a transparent shell, and the scale marks may be arranged on the transparent shell in any manner such as ink, protrusions, recesses, etc. so as to facilitate a user to observe the amount of liquid inside the water tank 10 outside the water tank 10.

second mounts

The first and

second mounts

Example nine

In this embodiment, on the basis of the eighth embodiment, a specific installation manner of the water pump 31 is further provided, as shown in fig. 4, the first connecting portion may be a clamping hole 21, and the second connecting portion may be a clamping piece 311 engaged with the clamping hole 21.

In other embodiments, the first connecting portion may also be the retainer 311, and the second connecting portion may be the card hole 21 engaged with the retainer 311. The specific forming manner and the setting manner of the retaining member 311 and the retaining hole 21 may be the same as those of the above embodiments, and are not described herein again.

The specific structure and function of the spraying system in this embodiment are the same as those in the embodiment, and specific reference may be made to the description of the embodiment two, which is not repeated in this embodiment.

Example ten

In this embodiment, on the basis of the ninth embodiment, as shown in fig. 4 and fig. 6, the card hole 21 may include a large hole portion 211 and a small hole portion 212 which are communicated with each other, the large hole portion 211 is used for the card 311 to extend into, and the small hole portion 212 is used for the card 311 to mount. It is understood that when the catching hole 21 is formed on the second mounting bracket 20b and the catching piece 311 is formed on the water pump 31, the large hole portion 211 may be positioned above the small hole portion 212. When the fastening hole 21 is formed on the water pump 31 and the fastening member 311 is formed on the second mounting bracket 20b, the small hole portion 212 is located above the large hole portion 211.

In the present embodiment, the aperture of the large hole portion 211 may be greater than or equal to the maximum outer diameter of the retainer 311, thereby facilitating the retainer 311 to protrude into the card hole without obstruction. The aperture of the small hole portion 212 may be equal to the minimum outer diameter of the retainer 311. Further, a driving device for driving the water pump 31 to operate may be disposed above the water pump 31. The drive means is preferably an electric motor 32. Preferably, the motor of each water pump 31 is arranged above the water pump 31, so that water leakage when the water pump 31 is damaged can be avoided, leaked liquid enters the motor to damage the motor, and the purpose of protecting the motor can be achieved. The catching piece 311 and the catching hole 21 may be elastically contacted. In order to realize the elastic contact between the holding member 311 and the holding hole 21, specifically, the holding member 311 may be a rubber member; alternatively, the outer wall of the holding member 311 has a rubber layer, and the holding member 311 may use a rigid member as a base, and the rubber layer is disposed on the outer wall of the rigid base. After the clamping member 311 is clamped into the clamping hole 21, the rubber layer of the clamping member 311 is in pressing contact with the clamping hole, and the friction is large, so that the clamping member 311 can be effectively prevented from shaking to be separated from the clamping hole 21.

The specific structure and function of the spraying system in this embodiment are the same as those in the third embodiment, and specific reference may be made to the description of the third embodiment, which is not repeated in this embodiment.

EXAMPLE eleven

In this embodiment, on the basis of the tenth embodiment, as shown in fig. 4, the holding member 311 includes a holding portion 311a for cooperating with the small hole portion 212, and a limiting portion 311b for preventing the holding member 311a from coming out of the small hole portion 212. Specifically, the holding portion 311a may be cylindrical, rectangular parallelepiped or the like, and the holding member 311a may be a boss coaxial with the holding portion 311a, or may be any structure of a rod, a sheet, a bar or a block perpendicular to or substantially perpendicular to the holding portion 311a, as long as the holding portion 311a is prevented from coming out of the small hole portion 212, which is not illustrated in this embodiment.

The specific structure and function of the spraying system in this embodiment are the same as those in the fourth embodiment, and specific reference may be made to the description of the fourth embodiment, which is not repeated in this embodiment.

Example twelve

The present embodiment is further based on any one of the eighth to eleventh embodiments. The head 50 may include a head main body 51 connected to the head connection water pipe 501 and a nozzle 52 connected to a distal end of the head main body 51 for spraying the liquid medicine. One water pump 31 may be connected to a plurality of spray heads 50, and a plurality of spray heads 50 may constitute a spray head assembly. The nozzle connection water pipe 501 connected to one water pump 31 may include one water inlet pipe 5011 and two or more water outlet pipes 5012, one end of the water inlet pipe 5011 may be communicated with the water pump 31, and the two or more water outlet pipes 5012 are led out from the other end of the water inlet pipe 5011 to be connected to each nozzle 50, so as to realize that one water pump 31 controls a plurality of nozzles 50.

Fig. 9 is a schematic structural diagram of a nozzle of a spraying system according to an embodiment of the present invention. As shown in fig. 9, at least two nozzles 50 may be connected to a terminal of one outlet pipe 5012 of the nozzle connection pipe 501, and as shown in fig. 9, two nozzles 50 are connected to a terminal of one outlet pipe 5012, and arrangement axes of the two nozzles 50 are substantially perpendicular, so that the two nozzles 50 may spray in two mutually perpendicular directions, respectively, thereby realizing multi-directional spraying.

The shower nozzle is connected water pipe 501 can with water pump 31 rotatable coupling to adjust the position of connecting shower nozzle 50 on shower nozzle is connected water pipe 501, and then realize diversified spraying.

Further, the head main body 51 may be detachably connected to the head connection water pipe 501, and as shown in fig. 9, the nozzle 52 may be detachably connected to the head main body 51. In the present embodiment, as shown in fig. 9, at least two different types of nozzles 52 may be included in one sprinkler system 100, and the head main body 51 may be selectively coupled to one of the at least two different types of nozzles 52. Two different types of nozzles 52 may include: nozzles 52 having different orifice diameters, nozzles 52 having different orifice shapes, and the like. When the user sprays crops by using the spraying system, different nozzles 52 can be selected to spray according to the types of the crops sprayed currently, and therefore the universality of the spraying system can be improved.

The specific structure and function of the spraying system in this embodiment are the same as those in the fifth embodiment, and the description of the fifth embodiment may be specifically referred to, and the detailed description is omitted in this embodiment.

EXAMPLE thirteen

In this embodiment, on the basis of any one of the eighth to twelfth embodiments, further, fig. 10 is a schematic structural view of a check valve at a water outlet of a water tank of a spraying system provided in an embodiment of the present invention. As shown in fig. 2 and 10, a check valve 60 for connecting the water tank 10 and the water pump 31 is provided at the water outlet of the water tank 10, and the check valve 60 may include a valve body 61 and a valve base 62. The relative state of the valve body 61 and the valve base 62 may include a butted state (state shown in fig. 10) and a separated state; a valve element 63 is movably disposed in the valve body 61, a fluid passage is formed between the valve body 61 and the valve base 62 in a butt state, and the valve element 63 seals the fluid passage 65 in a separation state.

In addition, fig. 8 is a schematic structural diagram of a flow meter of a spraying system provided in an embodiment of the present invention; as shown in fig. 2 and 8, a flow meter 70 for detecting the flow rate of the spray may be provided at a lower portion of the valve base 62, and the flow meter communicates with the flow passage 65 inside the valve base 62.

The specific structure and function of the spraying system in this embodiment are the same as those in the sixth embodiment, and specific reference may be made to the description of the sixth embodiment, which is not described again in this embodiment.

Example fourteen

In this embodiment, on the basis of any one of the eighth to thirteenth embodiments, a liquid level meter (not shown in the drawings) for detecting a water level in the water tank 10 may be further disposed in the water tank 10, and specifically may be disposed at a bottom position of the water tank 10, so that by detecting the water level in the water tank 10, the amount of the remaining liquid medicine in the water tank 10 can be clearly known, which is helpful for a user to know whether the liquid medicine in the water tank 10 is sufficient, and to add the liquid medicine in time.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sprinkler system, comprising:

the water distributor is communicated with the water tank;

the mounting frame is provided with a plurality of first connecting parts;

2. The spraying system of claim 1, wherein the first connecting portion is a snap-fit hole and the second connecting portion is a snap-fit member that mates with the snap-fit hole; or, the first connecting part is a clamping part, and the second connecting part is a clamping hole matched with the clamping part.

3. The spray system of claim 2, wherein the catch comprises at least one of: convex column, couple, boss.

4. The spraying system of claim 2, wherein the latching hole comprises a large hole portion and a small hole portion which are communicated with each other, the large hole portion is used for the latching member to extend into, and the small hole portion is used for the latching member to mount.

5. The sprinkler system according to claim 4, wherein the bore of the large bore portion is greater than or equal to the maximum outer diameter of the catch; the aperture of the small hole part is equal to the minimum outer diameter of the clamping piece.

6. The spraying system of claim 2 wherein said catch is in resilient contact with said catch aperture.

7. The spraying system of claim 6 wherein the catch is a rubber member or the outer wall of the catch has a rubber layer.

8. The spray system of claim 6, wherein an inner sidewall of said card hole has a rubber layer.

9. The sprinkler system according to claim 4, wherein the catch includes a catch portion for engaging with the small aperture portion and a limit portion for preventing the catch from being removed from the small aperture portion.

10. The spraying system of claim 9, wherein the cross-sectional dimension of the limiting portion is larger than the cross-sectional dimension of the catching portion, the limiting portions comprise two limiting portions, and the two limiting portions are respectively located at two ends of the catching portion.

11. The sprinkler system according to claim 1, wherein the mounting bracket comprises a first mounting bracket for connecting to an external device and a second mounting bracket for hanging the water pump, the material of the first and/or second mounting bracket being carbon fiber.

12. The sprinkler system of claim 11, wherein the second mounting bracket is plate-shaped.

13. The sprinkler system of claim 11, wherein the second mounting bracket has a lightening hole therein.

14. The sprinkler system of claim 11, wherein the first mounting bracket is removably connected to an external device.

15. The spraying system of claim 1 wherein a drive means is provided above the pump for driving the pump.

16. The spraying system of claim 1, wherein the water pump is connected with a spray head through a spray head connecting water pipe, and the spray head comprises a spray head main body connected with the spray head connecting water pipe and a spray nozzle connected to the tail end of the spray head main body and used for spraying liquid medicine.

17. The sprinkler system according to claim 16, wherein the sprinkler body is removably coupled to the sprinkler head connection water tube and the nozzle is removably coupled to the sprinkler body.

18. The spray system of claim 17 wherein said spray nozzles comprise at least two different types of spray nozzles, said spray head body being selectively connectable to one of said at least two different types of spray nozzles.

19. The sprinkler system according to claim 16, wherein the sprinkler head connection water pipe is rotatably connected to the water pump.

20. The spraying system of claim 1, wherein a one-way valve for connecting the water tank and the water pump is provided at the water outlet of the water tank, the one-way valve comprising a valve body and a valve base; the relative state of the valve body and the valve base comprises a butt joint state and a separation state; the valve body is movably provided with a valve core, the valve body is communicated with the valve base to form a liquid flow channel in the butt joint state, and the valve core seals the liquid flow channel in the separation state.

21. The sprinkler system according to claim 1, wherein the water tank is provided with a level gauge for detecting a water level in the water tank.

22. The sprinkler system according to claim 1, wherein a screen is disposed at the top opening of the tank, the screen covering the top opening of the tank and being removably connected to the tank.

23. The sprinkler system according to claim 1, wherein the water separator is connected to the water pump and/or the water tank by a quick disconnect coupling.

24. The spray system of claim 23 wherein said quick disconnect coupling is a threaded squeeze coupling.

25. The sprinkler system according to claim 20, wherein a flow meter is provided below the valve base for sensing the flow rate of the sprinkler, the flow meter being in communication with the valve base interior flow passage.

26. The sprinkler system of claim 25, wherein the flow meter is coupled to the valve base using a quick disconnect coupling.

27. The utility model provides an agricultural plant protection machine which characterized in that, includes the frame, the shower nozzle to and sprinkler system, wherein sprinkler system includes:

the water distributor is communicated with the water tank;

the mounting frame is provided with a plurality of first connecting parts;

28. The agricultural plant protection machine of claim 27, wherein the first connection portion is a snap hole and the second connection portion is a snap fit with the snap hole; or, the first connecting part is a clamping part, and the second connecting part is a clamping hole matched with the clamping part.

29. The agricultural plant protection machine of claim 28, wherein the catch comprises at least one of: convex column, couple, boss.

30. The agricultural plant protection machine of claim 28, wherein the clamping hole comprises a large hole portion and a small hole portion which are communicated with each other, the large hole portion is used for the clamping piece to extend into, and the small hole portion is used for the clamping piece to be mounted.

31. The agricultural plant protection machine of claim 30, wherein the bore diameter of the large bore portion is greater than or equal to the maximum outer diameter of the retainer; the aperture of the small hole part is equal to the minimum outer diameter of the clamping piece.

32. The agricultural plant protection machine of claim 28, wherein the catch is in resilient contact with the catch aperture.

33. The agricultural plant protection machine of claim 32, wherein the retainer is a rubber member, or an outer wall of the retainer has a rubber layer.

34. The agricultural plant protection machine of claim 32, wherein the inner sidewall of the card hole has a rubber layer.

35. The agricultural plant protection machine of claim 30, wherein the catch includes a catch portion for engaging with the small hole portion, and a stopper portion for preventing the catch from coming out of the small hole portion.

36. The agricultural plant protection machine of claim 35, wherein the cross-sectional dimension of the limiting portion is larger than the cross-sectional dimension of the clamping portion, the limiting portions comprise two limiting portions, and the two limiting portions are respectively located at two ends of the clamping portion.

37. The agricultural plant protection machine of claim 27, wherein the mounting bracket comprises a first mounting bracket for connecting to external equipment and a second mounting bracket for hanging the water pump, the material of the first and/or second mounting bracket being carbon fiber.

38. The agricultural plant protection machine of claim 37, wherein the second mounting bracket is plate-shaped.

39. The agricultural plant protection machine of claim 37, wherein the second mounting bracket has a lightening hole thereon.

40. The agricultural plant protection machine of claim 37, wherein the first mounting bracket is removably connected to an external device.

41. An agricultural plant protection machine according to claim 27, wherein a driving device for driving the water pump to operate is provided above the water pump.

42. The agricultural plant protection machine of claim 27, wherein the spray head is connected with the water pump through a spray head connecting water pipe, and the spray head comprises a spray head main body connected with the spray head connecting water pipe and a nozzle connected to the tail end of the spray head main body and used for spraying liquid medicine.

43. The agricultural plant protection machine of claim 42, wherein the spray head body is removably connected to the spray head connection water pipe, and the spray nozzle is removably connected to the spray head body.

44. The agricultural plant protection machine of claim 43, wherein the spray nozzles include at least two different types of spray nozzles, the spray head body being selectively connectable with one of the at least two different types of spray nozzles.

45. The agricultural plant protection machine of claim 42, wherein the spray head connection water pipe is rotatably connected to the water pump.

46. The agricultural plant protection machine of claim 27, wherein a check valve for connecting the water tank and the water pump is provided at the water outlet of the water tank, the check valve comprising a valve body and a valve base; the relative state of the valve body and the valve base comprises a butt joint state and a separation state; the valve body is movably provided with a valve core, the valve body is communicated with the valve base to form a liquid flow channel in the butt joint state, and the valve core seals the liquid flow channel in the separation state.

47. An agricultural plant protection machine according to claim 27, wherein the water tank is provided with a level gauge for detecting the water level in the water tank.

48. The agricultural plant protection machine of claim 27, wherein a screen is disposed at the top opening of the water tank, the screen covering the top opening of the water tank and being removably connected to the water tank.

49. The agricultural plant protection machine of claim 27, wherein the water separator is connected to the water pump and/or the water tank by a quick release joint.

50. The agricultural plant protection machine of claim 49, wherein the quick release joint is a threaded squeeze joint.

51. The agricultural plant protection machine of claim 46, wherein a flow meter for detecting spray flow is provided at a lower portion of the valve base, the flow meter communicating with the valve base interior fluid flow channel.

52. The agricultural plant protection machine of claim 51, wherein the flow meter is connected to the valve base using a quick disconnect joint.