阅读说明：本技术 隔膜泵、喷洒系统以及无人机 (Diaphragm pump, sprinkling system and unmanned aerial vehicle ) 是由 舒展 万道玉 于 2019-06-28 设计创作，主要内容包括：一种隔膜泵、喷洒系统以及无人机,隔膜泵包括：外壳(10)；隔膜(11),隔膜固定于外壳内,隔膜的其中一侧形成有工作腔(12),隔膜的另一相对侧形成有传动腔(13),工作腔用于容纳工作流体；支架(14),支架上设有活塞(15),支架位于传动腔内,活塞与隔膜之间容纳有传动介质；以及驱动机构(16),驱动机构与支架连接,驱动机构用于驱动支架带动活塞运动。该隔膜泵可以降低隔膜的形状复杂度和加工难度,提高隔膜的使用寿命,进而,可以使得隔膜泵的使用寿命较高。(A diaphragm pump, sprinkler system and unmanned aerial vehicle, the diaphragm pump includes: a housing (10); the diaphragm (11) is fixed in the shell, one side of the diaphragm is provided with a working chamber (12), the other opposite side of the diaphragm is provided with a transmission chamber (13), and the working chamber is used for containing working fluid; the support (14) is provided with a piston (15), the support is positioned in the transmission cavity, and a transmission medium is accommodated between the piston and the diaphragm; and the driving mechanism (16) is connected with the bracket and is used for driving the bracket to drive the piston to move. The diaphragm pump can reduce the shape complexity and the processing difficulty of the diaphragm, prolong the service life of the diaphragm, and further prolong the service life of the diaphragm pump.)

1. A diaphragm pump for pumping a working fluid, comprising:

a housing;

a diaphragm fixed in the housing, one side of the diaphragm being formed with a working chamber and the other opposite side of the diaphragm being formed with a transmission chamber, the working chamber being for containing the working fluid;

the support is provided with a piston and is positioned in the transmission cavity, and a transmission medium is accommodated between the piston and the diaphragm; and

the driving mechanism is connected with the bracket and is used for driving the bracket to drive the piston to move;

when the driving mechanism drives the support, the support drives the piston to move, the piston drives the diaphragm to move through the transmission medium, and then the diaphragm is driven to change the size of the working cavity, so that the working fluid flows into the working cavity or flows out of the working cavity.

2. The diaphragm pump of claim 1, wherein the compression ratio of the transmission medium is less than the compression ratio of the working fluid.

3. The diaphragm pump of claim 1,

two accommodating cavities which are oppositely arranged at intervals are arranged in the shell, and the two accommodating cavities are arranged along a first direction;

the number of the diaphragms is two, one diaphragm is arranged in one accommodating cavity, each diaphragm divides the accommodating cavity into a working cavity and a transmission cavity, and the working cavity and the transmission cavity are arranged along the first direction;

pistons are respectively arranged at two ends of the support, and a transmission medium is accommodated between each piston and the diaphragm.

4. The diaphragm pump of claim 3, wherein the drive mechanism is coupled to the bracket, the drive mechanism configured to drive the bracket to reciprocate the piston in the first direction.

5. The diaphragm pump of claim 4 wherein the drive mechanism is a motor, a motor shaft of the motor is an eccentric shaft, and the eccentric shaft is connected to the bracket.

6. The diaphragm pump of claim 4, wherein the drive mechanism comprises: a motor and a speed reducer;

the input shaft of the speed reducer is connected with the output end of the motor;

the output shaft of the speed reducer is connected with the support, and the output shaft of the speed reducer is an eccentric shaft.

7. A membrane pump according to claim 3, characterized in that both said transmission chambers are arranged close to or remote from said bracket, respectively.

8. The diaphragm pump of claim 1, further comprising:

the water inlet one-way valve is communicated with the working cavity and is used for controlling the working fluid to flow into the working cavity; and

and the water outlet one-way valve is communicated with the working cavity and is used for controlling the working fluid to flow out of the working cavity.

9. The diaphragm pump of claim 1 wherein the diaphragm is a metal diaphragm or a plastic diaphragm.

10. The diaphragm pump of claim 1 wherein the diaphragm is a planar diaphragm or a curved diaphragm.

11. The diaphragm pump of claim 1 wherein a side of the diaphragm adjacent the working chamber is provided with a corrosion resistant layer.

12. A diaphragm pump according to claim 11, said corrosion resistant layer being a polytetrafluoroethylene layer.

13. The diaphragm pump of claim 1 wherein the transmission medium is a neutral liquid or gas.

14. The diaphragm pump of claim 1 wherein the drive mechanism is a motor having an output connected to the bracket.

15. The diaphragm pump of claim 1, wherein the drive mechanism comprises: a motor and a speed reducer;

the input shaft of the speed reducer is connected with the output end of the motor;

and an output shaft of the speed reducer is connected with the bracket.

16. A spraying system, characterized in that the spraying system comprises: a spray head, a fluid reservoir and a diaphragm pump according to any of claims 1 to 15; wherein the content of the first and second substances,

the diaphragm pump is respectively connected with the spray head and the flow storage device.

17. An unmanned aerial vehicle, comprising: a frame and the sprinkler system of claim 16; wherein the content of the first and second substances,

the spraying system is fixed on the frame.

Technical Field

The invention relates to the technical field of diaphragm pumps, in particular to a diaphragm pump, a spraying system and an unmanned aerial vehicle.

Background

The diaphragm pump is also called a control pump, and the elasticity of a diaphragm in the diaphragm pump is utilized to cause the change of volume through the reciprocating motion of the diaphragm so as to suck and extrude materials. The diaphragm pump is widely applied to agricultural unmanned aerial vehicles, pesticide spraying vehicles and manpower spraying devices, and is one of main machines and tools for preventing and treating diseases, insects and weeds and spraying liquid fertilizers.

At present, a diaphragm of the diaphragm pump is often fixed on a driving device through connection modes such as embedded buckles or threaded connection and the like so as to realize reciprocating motion under the driving of the driving device. However, embedded buckle or set up the helicitic texture on the diaphragm not only makes the shape of diaphragm comparatively complicated easily, increases the processing degree of difficulty of diaphragm, moreover, when drive arrangement drive diaphragm, causes the stress concentration on the diaphragm very easily for the diaphragm breaks easily, and then, reduces the life of diaphragm pump very easily.

Disclosure of Invention

In view of this, in order to solve the problems that the diaphragm is complex in shape, easy to break and short in service life in the existing diaphragm pump, the embodiment of the invention provides a diaphragm pump, a spraying system and an unmanned aerial vehicle.

In a first aspect, an embodiment of the present invention provides a diaphragm pump for pumping a working fluid, including:

a housing;

a diaphragm fixed in the housing, one side of the diaphragm being formed with a working chamber and the other opposite side of the diaphragm being formed with a transmission chamber, the working chamber being for containing the working fluid;

the support is provided with a piston and is positioned in the transmission cavity, and a transmission medium is accommodated between the piston and the diaphragm; and

the driving mechanism is connected with the bracket and is used for driving the bracket to drive the piston to move;

when the driving mechanism drives the support, the support drives the piston to move, the piston drives the diaphragm to move through the transmission medium, and then the diaphragm is driven to change the size of the working cavity, so that the working fluid flows into the working cavity or flows out of the working cavity.

In a second aspect, an embodiment of the present invention further provides a spraying system, where the spraying system includes: a spray head, a flow storage device and the diaphragm pump; wherein the content of the first and second substances,

the diaphragm pump is respectively connected with the spray head and the flow storage device.

In a third aspect, an embodiment of the present invention further provides an unmanned aerial vehicle, including: a frame and the spraying system; wherein the content of the first and second substances,

the spraying system is fixed on the frame.

In the diaphragm pump according to the embodiment of the present invention, a working chamber is formed on one side of the diaphragm, a transmission chamber is formed on the other opposite side of the diaphragm, and the working chamber can be used for containing the working fluid; a piston is arranged on the support, the support is positioned in the transmission cavity, and a transmission medium is accommodated between the piston and the diaphragm; the driving mechanism is connected with the bracket and is used for driving the bracket to drive the piston to move; when the driving mechanism drives the support, the support drives the piston to move, the piston drives the diaphragm to move through the transmission medium, and then the diaphragm is prompted to change the size of the working cavity, so that the working fluid flows into the working cavity or flows out of the working cavity. In practical application, the driving mechanism can drive the support to drive the piston to move, and the piston can drive the diaphragm to move through the transmission medium, so that the problems that the diaphragm is complex in shape and easy to break due to the fact that the diaphragm is directly connected with the driving mechanism can be solved, the shape complexity and the processing difficulty of the diaphragm are reduced, the service life of the diaphragm is prolonged, and further the service life of the diaphragm pump is prolonged.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 schematically illustrates an example of a diaphragm pump according to an embodiment of the present invention;

FIG. 2 schematically illustrates a top view of the diaphragm pump of FIG. 1;

FIG. 3 is a schematic sectional view showing the diaphragm pump shown in FIG. 1;

FIG. 4 is a schematic sectional view of the diaphragm pump of FIG. 1 taken along line A-A;

fig. 5 is a schematic sectional view of the diaphragm pump shown in fig. 1, in a direction B-B.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

Fig. 1 is a view showing a diaphragm pump according to an embodiment of the present invention, fig. 2 is a schematic top view showing the diaphragm pump shown in fig. 1, and fig. 3 is a schematic cross-sectional view showing the diaphragm pump shown in fig. 1.

The diaphragm pump provided by the embodiment of the invention can be used for pumping working fluid, and the working fluid can be liquid or gaseous water, pesticide, fertilizer or disinfectant and the like.

Specifically, the diaphragm pump may include: a housing 10; a diaphragm 11, the diaphragm 11 being fixed in the housing 10, one side of the diaphragm 11 being formed with a working chamber 12, the other opposite side of the diaphragm 11 being formed with a transmission chamber 13, the working chamber 12 being adapted to receive the working fluid; the support 14 is provided with a piston 15, the support 14 is positioned in the transmission cavity 13, and a transmission medium is accommodated between the piston 15 and the diaphragm 11; and a driving mechanism 16, wherein the driving mechanism 16 is connected with the bracket 14, and the driving mechanism 16 can be used for driving the bracket 14 to drive the piston 15 to move.

When the driving mechanism 16 drives the support 14, the support 14 can drive the piston 15 to move, and the piston 15 can drive the diaphragm 11 to move through the transmission medium, so that the diaphragm 11 is prompted to change the size of the working chamber 12, and the working fluid flows into the working chamber 12 or flows out of the working chamber 12.

In practical application, the transmission cavity 13 may be a closed cavity, and the transmission medium between the piston 15 and the diaphragm 11 is located in the closed transmission cavity 13, and can transmit pressure and tensile force to drive the diaphragm 11 to move.

In the embodiment of the invention, the driving mechanism 16 can drive the piston 15 to move through the driving support 14, and the piston 15 can drive the diaphragm 11 to move through the transmission medium, so that the problems of complex diaphragm shape and easy diaphragm breakage caused by the direct connection of the diaphragm 11 and the driving mechanism 16 can be avoided, the shape complexity and the processing difficulty of the diaphragm 11 are reduced, the service life of the diaphragm 11 is prolonged, and further, the service life of the diaphragm pump is prolonged.

In practical applications, the housing 10 may be used for fixedly mounting components on the membrane pump, and the housing 10 may further be provided with a mounting mechanism 17, which mounting mechanism 17 may be used for mounting and fixing the membrane pump on other equipment. Specifically, the mounting mechanism 17 can include, but is not limited to, any of a mounting plate, a mounting ring, and a mounting bracket.

In the embodiment of the present invention, the diaphragm 11 may be a metal diaphragm or a plastic diaphragm. Specifically, under the condition that diaphragm 11 is the metal diaphragm, can make the intensity of diaphragm 11 higher, life is longer, under the condition that diaphragm 11 is the plastic diaphragm, can make the elasticity of diaphragm 11 better, the sealing performance of diaphragm 11 is better. In practical applications, a person skilled in the art may select a material of the diaphragm 11 according to actual needs, and the specific material of the diaphragm 11 in the embodiment of the present invention may not be limited.

Alternatively, the diaphragm 11 may be a flat diaphragm or a curved diaphragm. Specifically, in the case that the diaphragm 11 is a planar diaphragm, the processing technology of the diaphragm 11 may be relatively simple, and accordingly, the cost of the diaphragm 11 may be reduced, and in the case that the diaphragm 11 is a curved diaphragm, the diaphragm 11 may protrude toward the working chamber 12 or the transmission chamber 13 to increase the contact area between the diaphragm 11 and the working fluid or the transmission medium, and further, the driving force of the diaphragm 11 to the working fluid or the transmission medium may be increased. In practical applications, a person skilled in the art may select the shape of the diaphragm 11 according to actual needs, and the embodiment of the present invention is not limited thereto.

In the embodiment of the present invention, a corrosion-resistant layer is disposed on one side of the diaphragm 11 close to the working cavity 12, and the corrosion-resistant layer can be used to prevent the working fluid in the working cavity 12 from directly contacting the diaphragm 11 to corrode the diaphragm 11, so as to improve the corrosion resistance of the diaphragm 11, and further improve the service life of the diaphragm 11. In practical application, because the shape of the diaphragm 11 in the embodiment of the present invention is relatively simple, the operation difficulty of laying the corrosion-resistant layer on the diaphragm 11 can be greatly reduced, the integrity of the corrosion-resistant layer is improved, the corrosion resistance of the diaphragm 11 is further improved, and the service life of the diaphragm 11 is further prolonged.

In particular, the corrosion-resistant layer may be a polytetrafluoroethylene layer. Since polytetrafluoroethylene has the advantages of resistance to acid, alkali and various organic solvents and is hardly soluble in all solvents, in the case where the corrosion-resistant layer is a polytetrafluoroethylene layer, the corrosion-resistant layer can be made to have the advantages of resistance to acid, alkali and various organic solvents, respectively.

It is understood that, in practical applications, the corrosion-resistant layer may also be made of other materials that are resistant to acid and alkali, such as rubber, and the specific material of the corrosion-resistant layer in the embodiment of the present invention may not be limited.

In the embodiment of the present invention, the bracket 14 may be used to mount the fixed piston 15, and in practical applications, the bracket 14 may be connected to the driving mechanism 16, so as to drive the piston 15 to move under the driving of the driving mechanism 16, and the piston 15 may drive the diaphragm 11 to move through the transmission medium, thereby causing the diaphragm 11 to change the size of the working chamber 12, so that the working fluid flows into the working chamber 12, or flows out of the working chamber 12, so as to achieve the pumping of the working fluid.

In practical applications, the driving mechanism 16 may be a motor having an output connected to the frame 14 to drive the frame 14 to move, or the driving mechanism 16 may include: a motor and a speed reducer; the input shaft of the speed reducer is connected with the output end of the motor; the output shaft of the speed reducer is connected with the bracket 14 so as to drive the bracket 14 to move. In a specific application, a person skilled in the art can set the specific form of the driving mechanism 16 according to actual needs, and the embodiment of the present invention is not limited to this.

In particular, the transmission medium is a neutral liquid or gas. In practical application, under the condition that the transmission medium is neutral liquid or gas, the transmission medium can be prevented from corroding the diaphragm 11, and the service life of the diaphragm 11 is further prolonged.

In the embodiment of the present invention, the compression ratio of the transmission medium may be smaller than that of the working fluid, so as to improve the driving effect of the transmission medium on the diaphragm 11. In practical applications, when the compression ratio of the transmission medium is smaller than that of the working fluid, in the process that the transmission medium drives the diaphragm 11 to move, the volume change of the transmission medium can be smaller than that of the working fluid, and the driving effect of the transmission medium on the diaphragm 11 is improved.

For example, in the case where the working fluid is a gas, the transmission medium may be a liquid or a gas having a lower compressibility than the working fluid, and in the case where the working fluid is a liquid, the transmission medium may be a liquid having a lower compressibility than the working fluid.

In an alternative embodiment of the present invention, two receiving cavities may be disposed in the housing 10, and the two receiving cavities may be disposed along a first direction; the number of the diaphragms 11 is two, one diaphragm 11 is arranged in one accommodating cavity, each diaphragm 11 divides the accommodating cavity into a working cavity 12 and a transmission cavity 13, and the working cavity 12 and the transmission cavity 13 are arranged along the first direction; the support 14 is provided at both ends with pistons 15, respectively, and the transmission medium is accommodated between each piston 15 and the diaphragm 11.

Specifically, the first direction may be an up-down direction shown in fig. 3. As shown in fig. 3, the diaphragm pump may include two accommodating chambers spaced up and down, and the two accommodating chambers may be disposed along the up-down direction. The diaphragm pump may include an upper diaphragm 11 and a lower diaphragm 11, each diaphragm 11 is disposed in one of the accommodating chambers, and divides the accommodating chamber into a working chamber 12 and a transmission chamber 13. Pistons 15 are respectively arranged at two ends of the support 14, the transmission medium is accommodated between the upper piston 15 and the upper diaphragm 11, and the transmission medium is accommodated between the lower piston 15 and the lower diaphragm 11.

As shown in fig. 3, because the two ends of the bracket 14 are respectively provided with the pistons 15, when the bracket 14 moves upwards, the upper piston 15 can compress the upper transmission medium, the upper transmission medium can transmit pressure to the upper diaphragm 11, and the upper diaphragm 11 is compressed, the upper working chamber 12 becomes smaller, so that the working fluid in the upper working chamber 12 flows out; at the same time, the lower piston 15 can stretch the lower transmission medium, which can transmit the tensile force to the lower diaphragm 11, stretching the lower diaphragm 11, and the lower working chamber 12 becomes smaller, so that the working fluid can flow into the lower working chamber 12. That is, the lower working chamber 12 can suck the working fluid while the upper working chamber 12 discharges the working fluid, so that the efficiency of the diaphragm pump to pump the working fluid can be improved.

It can be understood that, in the embodiment of the present invention, only the implementation process of the upward movement of the bracket 14 is described, in practical applications, in the case that the bracket 14 moves downward, the above process may be referred to, and details of the embodiment of the present invention are not described herein.

In an embodiment of the present invention, the driving mechanism 16 is connected to the bracket 14, and the driving mechanism 16 may be configured to drive the bracket 16 to drive the piston 15 to reciprocate along the first direction.

In an alternative embodiment of the present invention, the driving mechanism 16 may be a motor, and the motor shaft 161 of the motor may be an eccentric shaft, and the eccentric shaft may be connected to the bracket 14.

In practical applications, in the case that the motor shaft 161 is an eccentric shaft, the motor shaft 161 can perform a cam motion under the driving of the motor, and since the motor shaft 161 is connected to the bracket 14, the motor shaft 161 can drive the bracket 14 to perform a linear reciprocating motion along the first direction when performing the cam motion. Thus, the lower working chamber 12 can suck the working fluid while the upper working chamber 12 discharges the working fluid, or the lower working chamber 12 can discharge the working fluid while the upper working chamber 12 sucks the working fluid, thereby improving the efficiency of the diaphragm pump for pumping the working fluid.

In another alternative embodiment of the present invention, the drive mechanism 16 may include: a motor and a speed reducer; the input shaft of the speed reducer is connected with the output end of the motor; the output shaft of the speed reducer is connected with the support 14, and the output shaft of the speed reducer is an eccentric shaft. In the embodiment of the invention, the speed reducer is arranged between the motor and the bracket 14, so that the rotating speed between the motor and the bracket 14 can be matched, the output torque of the motor can be increased, and the driving reliability of the motor to the bracket can be further improved.

In practical application, because the output shaft of the speed reducer is connected with the bracket 14, the output shaft of the speed reducer is an eccentric shaft, and the output shaft of the speed reducer can perform cam motion under the driving of the motor under the condition that the output shaft is the eccentric shaft, and because the output shaft is connected with the bracket 14, the output shaft can drive the bracket 14 to perform linear reciprocating motion along the first direction when performing the cam motion. Thus, the lower working chamber 12 can suck the working fluid while the upper working chamber 12 discharges the working fluid, or the lower working chamber 12 can discharge the working fluid while the upper working chamber 12 sucks the working fluid, thereby improving the efficiency of the diaphragm pump for pumping the working fluid.

In the embodiment of the present invention, the two transmission chambers 13 are respectively disposed close to or far from the bracket 14, so that the two transmission chambers 13 can be symmetrically disposed at two ends of the bracket 14, and thus, the pistons 15 disposed at two ends of the bracket 14 can be symmetrically disposed at two ends of the bracket 14, so as to improve the uniformity of the force applied to the two ends of the bracket 14, and further, improve the driving reliability of the bracket 14 to the pistons 15.

Fig. 4 is a schematic sectional view of the diaphragm pump shown in fig. 1, taken along the direction a-a, and fig. 5 is a schematic sectional view of the diaphragm pump shown in fig. 1, taken along the direction B-B. As shown in fig. 4 and 5, the diaphragm pump further includes: a water inlet check valve 18, the water inlet check valve 18 being in communication with the working chamber 12 for controlling the flow of said working fluid into the working chamber 12; and a water outlet check valve 19, wherein the water outlet check valve 19 is communicated with the working chamber 12 and is used for controlling the working fluid to flow out of the working chamber 12.

In practice, each working chamber 12 may be connected to one or more inlet check valves 18 to draw working fluid through the inlet check valves 18, and similarly, each working chamber 12 may be connected to one or more outlet check valves 19 to discharge working fluid through the outlet check valves 19.

Specifically, the diaphragm pump may further include a water inlet 110 and a water outlet 111, the water inlet 110 may be connected to a flow storage device for storing the working fluid, and the working fluid may be sucked from the flow storage device, in practical applications, the water inlet 110 may be connected to the water inlet check valve 18, and the working fluid entering from the water inlet 110 may enter the working chamber 12 through the water inlet check valve 18. The water outlet 111 may be connected to the water outlet check valve 19 for discharging the working fluid discharged from the water outlet check valve 19, and in practical applications, the water outlet 111 may be connected to a spray head through which the working fluid discharged from the water outlet 111 may be sprayed.

It should be understood that fig. 4 and 5 only show the case that the diaphragm pump includes one water inlet 110 and one water outlet 111, and in practical applications, the number of the water inlets 110 and the water outlets 111 in the diaphragm pump may be set according to practical situations, which is not limited in the embodiment of the present invention.

In summary, the diaphragm pump according to the embodiment of the present invention at least includes the following advantages:

in the diaphragm pump according to the embodiment of the present invention, a working chamber is formed on one side of the diaphragm, a transmission chamber is formed on the other opposite side of the diaphragm, and the working chamber can be used for containing the working fluid; a piston is arranged on the support, the support is positioned in the transmission cavity, and a transmission medium is accommodated between the piston and the diaphragm; the driving mechanism is connected with the bracket and is used for driving the bracket to drive the piston to move; when the driving mechanism drives the support, the support drives the piston to move, the piston drives the diaphragm to move through the transmission medium, and then the diaphragm is prompted to change the size of the working cavity, so that the working fluid flows into the working cavity or flows out of the working cavity. In practical application, the driving mechanism can drive the support to drive the piston to move, and the piston can drive the diaphragm to move through the transmission medium, so that the problems that the diaphragm is complex in shape and easy to break due to the fact that the diaphragm is directly connected with the driving mechanism can be solved, the shape complexity and the processing difficulty of the diaphragm are reduced, the service life of the diaphragm is prolonged, and further the service life of the diaphragm pump is prolonged.

An embodiment of the present invention further provides a spraying system, where the spraying system may include: a spray head, a flow storage device and the diaphragm pump; wherein, the diaphragm pump is respectively connected with the spray head and the flow storage device.

Specifically, the flow storage device may be a device capable of storing working liquid, such as a flow storage tank, a flow storage bin, or a flow storage trough, which is not limited in the embodiment of the present invention.

In the diaphragm pump according to the embodiment of the present invention, a working chamber is formed on one side of the diaphragm, a transmission chamber is formed on the other opposite side of the diaphragm, and the working chamber can be used for containing the working fluid; a piston is arranged on the support, the support is positioned in the transmission cavity, and a transmission medium is accommodated between the piston and the diaphragm; the driving mechanism is connected with the bracket and is used for driving the bracket to drive the piston to move; when the driving mechanism drives the support, the support drives the piston to move, the piston drives the diaphragm to move through the transmission medium, and then the diaphragm is prompted to change the size of the working cavity, so that the working fluid flows into the working cavity or flows out of the working cavity. In practical application, the driving mechanism can drive the support to drive the piston to move, and the piston can drive the diaphragm to move through the transmission medium, so that the problems that the diaphragm is complex in shape and easy to break due to the fact that the diaphragm is directly connected with the driving mechanism can be solved, the shape complexity and the processing difficulty of the diaphragm are reduced, the service life of the diaphragm is prolonged, and further the service life of the diaphragm pump is prolonged.

In practical applications, the diaphragm pump may further include a water inlet and a water outlet, the water inlet may be connected to a flow storage device for storing a working fluid, and is configured to suck the working fluid from the flow storage device, and in practical applications, the water inlet may be connected to the water inlet check valve, and the working fluid entering from the water inlet may enter the working chamber through the water inlet check valve. The water outlet can be connected with the water outlet one-way valve and used for discharging working fluid discharged by the water outlet one-way valve, in practical application, the water outlet can be connected with a spray head, and the working fluid discharged from the water outlet can be sprayed through the spray head.

In the spraying system provided by the embodiment of the invention, the driving mechanism of the diaphragm pump can drive the piston to move by driving the bracket, and the piston can drive the diaphragm to move by the transmission medium, so that the problems of complex diaphragm shape and easy diaphragm breakage caused by direct connection of the diaphragm and the driving mechanism can be avoided, the shape complexity and the processing difficulty of the diaphragm are reduced, the service life of the diaphragm is prolonged, the service life of the diaphragm pump is longer, and the working stability of the spraying system can be further improved.

The embodiment of the invention also provides an unmanned aerial vehicle, which specifically comprises: a frame and the spraying system; wherein the spraying system is fixed on the frame.

In particular, the drones may include, but are not limited to, any of patrol/surveillance drones, agricultural drones, meteorological drones, exploration drones, and mapping drones, reconnaissance drones, decoy drones, electronic countermeasure drones, communication relay drones.

In the unmanned aerial vehicle provided by the embodiment of the invention, as the driving mechanism can drive the piston to move by driving the support in the diaphragm pump in the spraying system, and the piston can drive the diaphragm to move by the transmission medium, the problems of complex diaphragm shape and easy diaphragm breakage caused by direct connection of the diaphragm and the driving mechanism can be avoided, the shape complexity and the processing difficulty of the diaphragm are reduced, the service life of the diaphragm is prolonged, the service life of the diaphragm pump is longer, and the working stability of the unmanned aerial vehicle can be further improved.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Reference herein to "one embodiment," "an embodiment," or "one or more embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Moreover, it is noted that instances of the word "in one embodiment" are not necessarily all referring to the same embodiment.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.