CN110972486A

CN110972486A - Diaphragm pump and agricultural unmanned aerial vehicle

Info

Publication number: CN110972486A
Application number: CN201880041692.0A
Authority: CN
Inventors: 舒展; 万道玉; 吴晓龙
Original assignee: SZ DJI Software Technology Co Ltd
Current assignee: SZ DJI Software Technology Co Ltd
Priority date: 2018-09-30
Filing date: 2018-12-03
Publication date: 2020-04-07
Anticipated expiration: 2038-12-03
Also published as: WO2020062549A1; CN208950819U; CN110972486B

Abstract

A diaphragm pump (100) and an agricultural unmanned aerial vehicle (1000), the diaphragm pump (100) comprises a pump body mechanism (10), a one-way valve mechanism (20) and a diaphragm mechanism (30), the one-way valve mechanism (20) and the diaphragm mechanism (30) are arranged on the pump body mechanism (10), the diaphragm mechanism (30) comprises a pump cover (31) and a diaphragm (32) connected with the pump cover (31), the pump cover (31) is mounted on the pump body mechanism (10) and covers the diaphragm (32) and the one-way valve mechanism (20), the pump cover (31) is provided with a first cavity (311) and a single flow passage (313) communicated with the first cavity (311), the one-way valve mechanism (20) is provided with a valve cover cavity (221), the diaphragm (32) seals the first cavity (311) to form a diaphragm cavity (310), the single flow passage (313) communicates the bonnet cavity (221) and the diaphragm cavity (310). The diaphragm chamber (310) and the check valve mechanism (20) are communicated by a single flow passage (313), which reduces the complexity and manufacturing cost of the diaphragm pump (100) and reduces the liquid flow resistance.

Description

Diaphragm pump and agricultural unmanned aerial vehicle

Technical Field

The embodiment of the invention relates to the technical field of driving devices, in particular to a diaphragm pump and an agricultural unmanned aerial vehicle.

Background

At present, the diaphragm pump is widely applied to the plant protection industry in recent years due to good corrosion resistance. Existing diaphragm pumps typically have a flow path between the diaphragm and the check valve to allow fluid to flow within the pump. As the mechanical structure becomes more sophisticated, the number of parts and the complexity of the parts themselves are generally reduced. Therefore, how to design the flow passage structure makes the complexity and cost reduction of the pump a problem to be solved.

Disclosure of Invention

The embodiment of the invention provides a diaphragm pump and an agricultural unmanned aerial vehicle.

The diaphragm pump comprises a pump body mechanism, a one-way valve mechanism and a diaphragm mechanism, wherein the one-way valve mechanism and the diaphragm mechanism are installed on the pump body mechanism, the diaphragm mechanism comprises a pump cover and a diaphragm connected with the pump cover, the pump cover is installed on the pump body mechanism and covers the diaphragm and the one-way valve mechanism, the pump cover is provided with a first cavity and a single flow channel communicated with the first cavity, the one-way valve mechanism is provided with a valve cover cavity, the diaphragm seals the first cavity to form a diaphragm cavity, and the single flow channel is communicated with the valve cover cavity and the diaphragm cavity.

In the diaphragm pump, the diaphragm cavity is communicated with the one-way valve mechanism by using a single flow passage, so that the complexity and the manufacturing cost of the diaphragm pump can be reduced, and the liquid flow resistance is reduced.

In some embodiments, the pump cover is opened with a second cavity, the flow passage communicates the first cavity and the second cavity, and the valve cover cavity and the second cavity are correspondingly connected to form a flow-through cavity.

In some embodiments, the flow passage forms an opening on a side of the pump cover, and the diaphragm mechanism includes a plug disposed within the flow passage and blocking the opening.

In some embodiments, the one-way valve mechanism includes a one-way valve and a valve cover that mounts the one-way valve to the pump body mechanism, the valve cover opening the valve cover cavity.

In some embodiments, the valve cover chamber is provided with a valve cover inflow passage and a valve cover outflow passage, the check valve includes a first check valve for controlling opening and closing of the valve cover inflow passage and a second check valve for controlling opening and closing of the valve cover outflow passage, and the check valve mechanism is configured such that the second check valve closes the valve cover outflow passage when the first check valve opens the valve cover inflow passage, and the first check valve closes the valve cover inflow passage when the second check valve opens the valve cover outflow passage.

In some embodiments, each of the first and second check valves includes a valve seat, a valve core mounted on the valve seat, and an elastic member engaged with the valve core, and the valve cores of the first and second check valves are mounted in opposite directions.

In some embodiments, the valve seat of the first one-way valve is disposed in the pump body mechanism, and the valve seat of the second one-way valve is disposed in the valve cover cavity.

In certain embodiments, the diaphragm pump includes an eccentric mechanism and a motor mechanism, the eccentric mechanism and the motor mechanism being mounted to the pump body mechanism, the eccentric mechanism connecting the motor mechanism and the diaphragm.

In some embodiments, the motor mechanism includes a motor, a motor shaft of the motor includes an eccentric shaft portion, the eccentric shaft portion is connected to the eccentric mechanism, and the motor is configured to drive the motor shaft to reciprocate the diaphragm through the eccentric mechanism to increase or decrease the volume of the diaphragm chamber.

In some embodiments, the motor includes a motor body connected to the motor shaft, a surface of the motor body facing the pump body mechanism is provided with a protrusion, and a side surface of the pump body mechanism is provided with a groove, and the protrusion is received in the groove.

In some embodiments, the eccentric mechanism includes a bracket assembly through which the eccentric shaft portion is rotatably disposed, the bracket assembly being coupled to the diaphragm.

In some embodiments, the bracket assembly includes a bracket and a driving member, the bracket is connected to the diaphragm, the driving member is mounted on the eccentric shaft portion, and the eccentric shaft portion drives the driving member to drive the bracket and the diaphragm to reciprocate when rotating.

In some embodiments, the stand assembly includes a support by which the diaphragm is supported on the stand.

In some embodiments, the eccentric mechanism includes an auxiliary member, the auxiliary member is disposed corresponding to the driving member, and the auxiliary member is configured to contact with the driving member, wherein when the motor is operated, a motor shaft of the motor drives the driving member to move, so that the driving member is reciprocally abutted against the auxiliary member, and the bracket moves along with the auxiliary member, so that the bracket drives the diaphragm to reciprocate.

In some embodiments, a first engaging groove and a second engaging groove are formed on a surface of the auxiliary member facing away from the driving member, the bracket is shaped like a frame, one side frame of the bracket is engaged with the first engaging groove, the supporting member is provided with a protruding engaging block, and the engaging block is engaged with the second engaging groove.

In some embodiments, the diaphragm pump includes a support bearing provided in the pump body mechanism, the motor includes a motor body, the motor shaft is connected to the motor body, and the support bearing is mounted at an end of the motor shaft remote from the motor body.

In certain embodiments, the diaphragm pump includes a plug mechanism coupled to the motor mechanism.

The agricultural unmanned aerial vehicle comprises a machine body, a liquid storage tank for storing liquid medicine, a spraying assembly and the diaphragm pump in any embodiment, wherein the diaphragm pump is communicated with the liquid storage tank and the spraying assembly through a pipeline and used for pumping the liquid in the liquid storage tank to the spraying assembly.

Among the above-mentioned agricultural unmanned aerial vehicle, utilize single runner intercommunication between diaphragm chamber and the check valve mechanism, reducible diaphragm pump's complexity and manufacturing cost like this reduce the liquid flow resistance simultaneously.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic plan view of an agricultural drone according to an embodiment of the invention;

FIG. 2 is a schematic perspective view of a diaphragm pump according to an embodiment of the present invention;

FIG. 3 is a partially exploded schematic view of a diaphragm pump according to an embodiment of the present invention;

FIG. 4 is another partially exploded schematic view of a diaphragm pump according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 6 is an enlarged schematic view of a portion of the diaphragm pump I of FIG. 5;

FIG. 7 is another schematic cross-sectional view of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 8 is a partial perspective view of a diaphragm pump according to an embodiment of the present invention;

FIG. 9 is a schematic exploded perspective view of yet another portion of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 10 is a further partially exploded schematic view of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 11 is a schematic view, partially in section, of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 12 is a schematic perspective view of a pump body mechanism of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 13 is a schematic perspective view of a pump cover of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 14 is a schematic perspective view of a bracket assembly and diaphragm of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 15 is a schematic plan view of a bracket assembly and diaphragm of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 16 is a partially exploded perspective view of a bracket assembly and diaphragm of a diaphragm pump according to an embodiment of the present invention;

FIG. 17 is a schematic cross-sectional view of a bracket assembly and diaphragm of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 18 is a schematic perspective view of an auxiliary member of a diaphragm pump in accordance with an embodiment of the present invention;

FIG. 19 is a schematic perspective view of the motor mechanism of the diaphragm pump in accordance with an embodiment of the present invention;

FIG. 20 is an exploded perspective view of the motor mechanism of the diaphragm pump in accordance with an embodiment of the present invention;

fig. 21 is a schematic sectional view of a motor mechanism of a diaphragm pump according to an embodiment of the present invention.

Description of the main element symbols:

an agricultural drone 1000;

the diaphragm pump 100;

the pump body mechanism 10, the first fixing member 101, the second fixing member 102, the pump body 11, the first mounting surface 111, the second mounting surface 112, the accommodating cavity 113, the first mounting groove 114, the bottom surface 1141, the mounting cavity 1140, the groove 115, the check valve mechanism 20, the check valve 21, the first check valve 211, the second check valve 212, the valve seat 213, the valve core 214, the elastic member 215, the liquid inlet 116, the liquid outlet 117, the first positioning pillar 216, the second positioning pillar 217, the valve cover 22, the valve cover cavity 221, the valve cover inflow channel 222, the valve cover outflow channel 223, the diaphragm mechanism 30, the pump cover 31, the diaphragm cavity 310, the first cavity 311, the second cavity 312, the flow channel 313, the opening 3131, the flow cavity 314, the diaphragm 32, the connecting member 321, the connecting portion 322, the motor mechanism 33, the motor mechanism 40, the motor 41, the motor body 411, the protrusion 4111, the motor shaft 412, the eccentric 413, the housing 42, the second mounting groove 421, the eccentric mechanism, The plug comprises a bracket 511, a driving element 512, a supporting element 513, a clamping block 5131, an auxiliary element 52, a first clamping groove 521, a second clamping groove 522, a contact surface 523, a supporting bearing 60, a plug mechanism 70, a plug body 71 and an end head 72;

the liquid spraying device comprises a machine body 200, a liquid storage tank 300, a spraying assembly 400, a machine arm 500 and a foot rest 600.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present invention.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following invention provides many different embodiments or examples for implementing different features of the invention. In order to simplify the invention of the embodiments of the invention, the components and settings of the specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of brevity and clarity and do not in themselves dictate a relationship between the various embodiments and/or configurations discussed. In addition, while embodiments of the invention provide examples of various specific processes and materials, one of ordinary skill in the art will recognize applications of other processes and/or uses of other materials.

Referring to fig. 1, the diaphragm pump 100 according to the embodiment of the present invention is applied to an agricultural unmanned aerial vehicle 1000 or other spraying equipment, and then provides a spraying driving force for the agricultural unmanned aerial vehicle 1000 or other spraying equipment. The embodiment of the present invention is further illustrated by taking the diaphragm pump 100 as an example for application to an agricultural unmanned aerial vehicle 1000.

Referring to fig. 1, the agricultural drone 1000 includes a body 200, a liquid storage tank 300 for storing liquid medicine, a spraying assembly 400, and a horn 500. The diaphragm pump 100 communicates the tank 300 and the spray assembly 400 through a pipe. The diaphragm pump 100 is used to pump liquid from within the reservoir 300 to the spray assembly 400 for irrigation.

It should be noted that, the installation manner of the diaphragm pump 100 on the agricultural drone 1000 may be set according to the specific application environment, for example, as shown in fig. 1, the diaphragm pump is installed on the fuselage 200. The installation manner of the liquid storage tank 300 on the agricultural drone 1000 is not particularly limited, and may be fixed to the foot stool 600 of the agricultural drone 1000 by fixing members such as screws, for example. The mounting of the spray assembly 400 on the agricultural drone 1000 is also not particularly limited and may be secured to the fuselage 200, for example, by a snap or screw connection or other securing means. In the example shown in fig. 1, the spray assembly 400 is provided on a side of the horn 500 remote from the body 100. The spray assembly 400 includes a spray head (not shown). The spray assembly 400 sprays liquid through the spray head for irrigation.

Referring to fig. 2 to 4, the diaphragm pump 100 of the present embodiment includes a pump body mechanism 10, a check valve mechanism 20, a diaphragm mechanism 30, a motor mechanism 40, an eccentric mechanism 50, a support bearing 60, and a plug mechanism 70. The check valve mechanism 20, the diaphragm mechanism 30, the motor mechanism 40, the eccentric mechanism 50, and the plug mechanism 70 are mounted on the pump body mechanism 10. The support bearing 60 is housed in the pump body mechanism 10. In the present embodiment, the plug mechanism 70 is attached to the pump mechanism 10 via the motor mechanism 40. The plug mechanism 70 is electrically connected to the motor mechanism 40.

In the present embodiment, the number of the check valve mechanisms 20 is two. The two check valve mechanisms 20 are identical in structure. The embodiment of the present invention will be described taking one of the check valve mechanisms 60 as an example. The number of the diaphragm mechanisms 30 is two. The two diaphragm mechanisms 30 are identical in structure. The embodiment of the present invention will be described taking one of the diaphragm mechanisms 30 as an example.

Referring to fig. 4 to 5 and 8 to 12, the pump mechanism 10 includes a pump body 11. Pump body 11 is substantially rectangular in shape. First mounting surfaces 111 are formed on opposite ends of pump body 11. The other end side of pump body 11 is formed with second mounting surface 112. The second mounting surface 112 is located between the two first mounting surfaces 111. The pump body 11 is provided with an accommodating cavity 113 penetrating through the two first mounting surfaces 111. Each first mounting surface 111 is provided with a first mounting groove 114. The eccentric mechanism 50 and the support bearing 60 are disposed in the accommodation chamber 113. The check valve mechanism 20 is mounted to the first mounting groove 114. A diaphragm mechanism 30 is mounted to a corresponding one of the first mounting surfaces 111 and covers a corresponding one of the check valve mechanisms 20.

Each diaphragm mechanism 30 is at least partially housed in the housing cavity 113. This facilitates the mounting and dismounting of the diaphragm mechanism 30 and facilitates the individualized design of each mechanism. Two mounting cavities 1140 are opened on the bottom surface 1141 of each first mounting groove 114. The check valve mechanism 20 is partially mounted to the two mounting cavities 1140. The provision of the mounting cavity 1140 can improve the stability of the mounting of the check valve mechanism 20.

The second mounting surface 112 is provided with a groove 115. The groove 115 communicates with the accommodation chamber 113. The groove 115 can be used to position the mounting direction of the motor mechanism for fool-proofing.

Referring to fig. 2 and 7, the pump body 11 is provided with a liquid inlet 116 and a liquid outlet 117. When the diaphragm pump 100 is in operation, liquid can enter the diaphragm pump 100 through the liquid inlet 116 and can exit the diaphragm pump 100 through the liquid outlet 117. In this embodiment, liquid inlet 116 and liquid outlet 117 are respectively formed on two opposite side surfaces of pump body 11. In the orientation of fig. 7, liquid inlet 116 and liquid outlet 117 are open on the left and right sides of pump body 11, respectively. The liquid inlet 116 may be in communication with the reservoir 300 and the liquid outlet 116 may be in communication with the spray assembly 400.

Referring to fig. 3 and 4, the check valve mechanism 20 includes a check valve 21 and a valve cover 22. The valve cover 22 mounts the check valve 21 to the pump body mechanism 10. Specifically, the valve cover 22 mounts the check valve 21 in the first mounting groove 114. It will be appreciated that the shape of the valve cover 22 may be matched to the shape of the first mounting groove 114 in order to improve the stability of the mounting of the check valve mechanism 20.

It is understood that the valve cover 22 may be fixed to the pump body 11 by the first fixing member 101. The first fixing member 101 may be a screw, for example. This realizes the separate fixation of the check valve mechanism 20 when the valve cover 22 is fixed to the pump body 11 by the first fixing member 101.

Referring to fig. 7, the check valve 21 includes a first check valve 211 and a second check valve 212. The valve cover 22 is opened with a valve cover cavity 221. The bonnet cavity 221 is provided with a bonnet inflow passage 222 and a bonnet outflow passage 223. The first check valve 211 serves to control the opening and closing of the valve cover inflow passage 222. The second check valve 212 is used to control the opening and closing of the bonnet outlet passage 223. The check valve mechanism 20 is configured such that when the first check valve 211 opens the bonnet inflow passage 222, the second check valve 212 closes the bonnet outflow passage 223, and when the second check valve 212 opens the bonnet outflow passage 223, the first check valve 211 closes the bonnet inflow passage 222. This allows control of the flow of liquid into or out of the bonnet cavity 221 through the one-way valve 21. Note that the first check valve 211 and the second check valve 212 each allow liquid to flow in one direction in the installation direction.

In the present embodiment, when the first check valve 211 opens the valve cap inflow passage 222, the liquid inlet 116 communicates with the valve cap inflow passage 222, and liquid can enter the valve cap inflow passage 222 through the liquid inlet 116; when the first check valve 211 closes the valve cover inflow passage 222, the liquid inlet 116 is not communicated with the valve cover inflow passage 222, and liquid cannot enter the valve cover inflow passage 222 through the liquid inlet 116. When the second one-way valve 212 opens the valve cover outflow passage 223, the liquid outlet 117 communicates with the valve cover outflow passage 223, and the liquid in the valve cover outflow passage 223 can flow out of the diaphragm pump 100 from the liquid outlet 117; when the second check valve 212 closes the valve cover outflow passage 223, the liquid outlet 117 does not communicate with the valve cover outflow passage 223, and the liquid in the valve cover outflow passage 223 cannot flow out of the diaphragm pump 100 from the liquid outlet 117.

In order to improve the stability of the liquid flow, each of the first and

second check valves

211 and 212 includes a valve seat 213, a valve element 214 installed on the valve seat 213, and an elastic member 215 engaged with the valve element 214. The spools 214 of the first and

second check valves

211 and 212 are installed in opposite directions. To facilitate control of the flow of liquid, the valve seat 213 of the first check valve 211 is provided in the pump body mechanism 10, and the valve seat 213 of the second check valve 212 is provided in the valve cover chamber 221.

The elastic member 215 may be a spring, for example. One end of the elastic member 215 is fitted over the valve seat 213, and the other end thereof is fitted over the valve element 214, so that the valve element 214 can stably reciprocate along with the elastic member 215.

In the example shown in fig. 6, in order to improve the operation stability of the elastic member 215, the inner wall of the valve cover chamber 221 is protruded with a first positioning post 216 for positioning the elastic member 215 of the first check valve 211. The pump body mechanism 10 is provided with a second positioning column 217 that positions the elastic member 215 of the second check valve 212. Referring to fig. 3 to 6, the diaphragm mechanism 30 includes a pump cover 31, a diaphragm 32 connected to the pump cover 31, and a plug 33. The pump cover 31 and the diaphragm 32 together form a diaphragm chamber 310. In the present embodiment, each pump cover 31 and a corresponding one of the diaphragms 32 together form one diaphragm chamber 310. That is, the number of diaphragm chambers 310 is two.

A pump cap 31 is attached to the pump body mechanism 10 and covers the diaphragm 32 and the valve cap 22. Specifically, the diaphragm 32 is disposed in the accommodation cavity 113. The pump cover 31 is attached to the first attachment surface 111 and covers the diaphragm 32 and the bonnet 22. Therefore, each mechanism can be independently designed, the mechanism dependence is reduced to the maximum extent, and the maintenance is convenient. The valve cover 22 fixes the check valve 21 to the pump body mechanism 10. Meanwhile, when the pump cover 31 is opened, the check valve 21 is still mounted on the pump body mechanism 10 by the valve cover 22, and the check valve 21 does not fall off. The check valve 21 can be removed after the valve cover 22 is removed, and the check valve 21 is not removed when the diaphragm 32 is removed, avoiding the risk of losing parts of the check valve 21.

It is understood that the pump cover 31 may be fixed to the pump body 11 by the second fixing member 102. The second fixing member 102 may be a screw, for example. Thus, when the pump cover 31 needs to be detached, the pump cover 31 can be detached by only unscrewing the second fixing member 102, and then the diaphragm 32 can be detached. When the pump cover 31 is removed, the check valve mechanism 20 is still fixedly mounted on the pump body 11 by the first fixing member 101 alone and does not fall off. The first fixing member 101 needs to be removed continuously to remove the check valve 21.

Referring to fig. 13, the pump cover 31 is provided with a first cavity 311, a second cavity 312, and a flow passage 313 communicating the first cavity 311 and the second cavity 312. The valve cover chamber 221 is correspondingly connected with the second chamber 312 to form a flow-through chamber 314. The diaphragm 32 seals the first chamber 311 to form a diaphragm chamber 310, and the flow passage 313 communicates the flow-through chamber 314 with the diaphragm chamber 310. It is understood that in the embodiment of the present invention, the single pump cover 31 opens the single flow passage 313. In this manner, a single flow passage 313 is utilized to communicate between the diaphragm chamber 310 and the check valve mechanism 20, which reduces the complexity and manufacturing cost of the diaphragm pump 100 while reducing the liquid flow resistance. In the example shown in fig. 5 and 13, the pump cover 31 has a substantially rectangular parallelepiped shape. The flow passage 313 opens on the inner side surface of the pump cover 31. The flow channel 313 communicates with the diaphragm chamber 310. Fluid flows into or out of the diaphragm chamber 310 through the flow channel 313. Liquid entering the valve cap inlet passage 222 through the liquid inlet 116 can enter the diaphragm chamber 310 through the flow passage 313. And liquid in the diaphragm chamber 310 can enter the bonnet outlet passage 222 via the flow passage 313 and flow out of the diaphragm pump 100 via the liquid outlet 117.

The flow passage 313 has an opening 3131 formed in a side surface of the pump cover 31. A plug 33 is disposed in the flow passage 313 and blocks the opening 3131. Thus, the plug 33 can effectively prevent the liquid from flowing out of the opening 3131. Preferably, the plug 33 is detachably installed in the flow passage 313, and when the flow passage 313 needs to be cleaned, only the plug 33 needs to be opened, and the whole pump cover 31 does not need to be detached, so that the maintenance cost and time are saved. In one example, the plug 33 is threadably disposed within the flow passage 313.

The diaphragm 32 is removably coupled to the eccentric mechanism 50. Thus, the check valve mechanism 20 is designed independently of the diaphragm mechanism 30, so that when the diaphragm 32 is detached, the check valve mechanism 20 is not affected, the replacement operation of the diaphragm 32 is simplified, and the risk of losing parts of the check valve 21 is avoided. The diaphragm 32 is connected to the pump body mechanism 10 via a connection member 321. Specifically, the surface of the diaphragm 32 is provided with a connecting portion 322. The head of the connecting member 321 is provided at the connecting portion 322. Thus, the diaphragm 32 is connected to the connecting member 321 with good stability.

Referring to fig. 19 to 21, the motor mechanism 40 includes a motor 41, a housing 42, and a cover 43. The motor 41 includes a motor body 411 and a motor shaft 412. The motor shaft 412 is connected to the motor body 411. The motor shaft 412 of the motor 41 includes an eccentric shaft portion 413. The eccentric shaft portion 413 is connected to the eccentric mechanism 50. The motor 41 is used to drive the motor shaft 412 to reciprocate the diaphragm 32 via the eccentric mechanism 50 to increase or decrease the volume of the diaphragm chamber 310. As such, when the volume of the diaphragm chamber 310 is reduced, the liquid in the diaphragm chamber 310 can be squeezed to flow out through the flow channel 313, and can enter the flow-through chamber 314, and can flow out from the liquid outlet 117 when the second check valve 212 opens the bonnet outflow passage 223; when the volume of the diaphragm chamber 310 increases, the diaphragm chamber 310 can suck the liquid in the flow chamber 314 into the diaphragm chamber 310 through the flow passage 313.

It can be understood that the provision of the eccentric shaft portion 413 allows the power of the motor 41 to be transmitted to the eccentric shaft portion 413, reducing transmission loss. It should be noted that the eccentric shaft portion 413 can be integrally provided on the motor shaft 412 to form an eccentric shaft, so that the strength weakening problem of the key groove or the cut edge on the motor shaft 412 can be avoided.

Referring to fig. 5, a protrusion 4111 is disposed on a surface of the motor body 411 facing the pump mechanism 10. The protrusion 4111 is received in the groove 115. The eccentric shaft portion 413 is rotatably received in the receiving chamber 113. The convex portion 4111 and the groove 115 are matched to be arranged, so that the installation direction from the motor mechanism 40 to the pump body mechanism 10 can be positioned, and a fool-proof effect is achieved. Further, a support bearing 60 is installed at an end of the motor shaft 412 remote from the motor body 411. The support bearing 60 is disposed in the receiving cavity 113 and can improve stability when the motor shaft 412 rotates.

Referring to fig. 20, the housing 42 is provided with a second mounting groove 421. The plug mechanism 70 includes a plug body 71 and a header 72 connected to the plug body 71. The header 71 is detachably mounted to the second mounting groove 421 to mount the plug mechanism 70 to the housing 42. This facilitates the mounting and dismounting of the plug mechanism 70. The motor 41 is housed in the lid 43.

Referring to fig. 14 to 18, the eccentric mechanism 50 includes a bracket assembly 51 and an auxiliary member 52. The eccentric shaft 413 is rotatably inserted into the bracket assembly 51. The stent assembly 51 is attached to the septum 32. Thus, the eccentric shaft portion 413 rotates and drives the bracket assembly 51 to reciprocate to drive the diaphragm 32 to reciprocate to increase or decrease the volume of the diaphragm chamber 310.

The carriage assembly 51 includes a carriage 511, a drive member 512, and a support member 513. The support 511 is connected to the diaphragm 32. The holder 511 has a frame shape. The bracket 511 is provided with a mounting through hole 5111. The auxiliary member 52 may be detachably mounted to the bracket 511 by a snap structure. This facilitates the removal of the auxiliary member 52 and enables quick replacement. The diaphragm 32 is supported on the support 511 by a support 513, so that the diaphragm 32 is more stable in reciprocating motion.

Referring to fig. 5 and 17, in the present embodiment, the number of the supporting members 513 is two. The two supporting members 513 are disposed at opposite ends of the frame 511. The two diaphragms 32 are respectively disposed on the two supports 513. The two diaphragms 32 are symmetrically disposed about the support 511. One of the two supports 513 is disposed between the diaphragm 32 of one diaphragm mechanism 30 and the support 511 to support the corresponding one diaphragm 32, and the other thereof is disposed between the diaphragm 32 of the other diaphragm mechanism 30 and the support 511 to support the corresponding other diaphragm 32. The eccentric shaft portion 413 rotates and can drive the bracket assembly 51 to reciprocate to drive the two diaphragms 32 to reciprocate to increase or decrease the volume of the corresponding diaphragm chamber 310.

Wherein the diaphragm 32 is connected to the support 511 by a connector 321. It should be noted that the connecting member 321 may be, for example, a screw, one end of the connecting member 321 and the diaphragm 32 may be insert-molded, and the other end thereof may be fixedly connected with the bracket 511 in a threaded manner.

The driver 512 is mounted on the eccentric shaft portion 413. The auxiliary member 52 is provided between the driving member 512 and the side wall of the mounting through-hole 5111. The auxiliary member 52 is disposed corresponding to the driving member 512. The auxiliary member 52 is adapted to contact the driving member 512. When the motor 41 is operated, the eccentric shaft 413 drives the driving element 512 to move, so that the driving element 512 is in contact with the auxiliary element 52 in a reciprocating manner, and the bracket 511 moves along with the auxiliary element 52, so that the bracket 511 drives the diaphragm 32 to move in a reciprocating manner. In this manner, the abrasion of the eccentric mechanism 50 is solved by adding the auxiliary member 52, and the auxiliary member 52 is abraded while the diaphragm pump 100 is operated without damaging or reducing the damage to the driving member 512 and the bracket 511, thereby improving the life span and reliability of the diaphragm pump 100.

The surface of the auxiliary element 52 facing away from the driving element 512 is provided with a first locking groove 521 and a second locking groove 522. One frame of the bracket 511 is clamped in the first clamping groove 521. The supporting member 513 is convexly provided with a latch 5131. The latch block 5131 is latched to the second latch slot 522. In this way, the auxiliary member 52 is detachably mounted on the bracket 511 by the snap structure, and the stability of the axial and radial fixing of the auxiliary member 52 can be ensured.

It is understood that the drive member 512 may be, for example, a bearing. Thus, the stability of the driving member 512 is better.

It will be appreciated that in other embodiments, the motor shaft may not have an eccentric shaft portion, and the driving member may be directly sleeved on the motor shaft to form an eccentric protrusion on the driving member, so that the driving member reciprocally abuts against the auxiliary member. For example, the driving member may be an eccentric bearing disposed on the motor shaft, and the eccentric bearing performs an eccentric motion when the motor shaft rotates, so as to drive the bracket assembly to perform a reciprocating motion to drive the diaphragm 32 to perform a reciprocating motion.

In the example shown in fig. 17, the number of the auxiliary members 52 is two. The two auxiliary members 52 are symmetrically installed at the opposite side walls of the mounting through-hole 5111, respectively. The drive member 512 is located between the two auxiliary members 52. This provides better protection against wear. Each auxiliary element 52 is formed with a contact surface 523 for contact with the drive element 512. The surface of the auxiliary element 52 facing away from the drive element 512 is opposite the contact surface 523. The contact surface 520 is formed to increase the area of contact between the auxiliary 52 and the driver 521, and to improve the stability of the driver 512 in reciprocating abutment with the auxiliary 52.

The auxiliary member 52 may be a gasket, for example. The auxiliary 52 can be made of wear-resistant plastic (e.g., nylon or polyoxymethylene plastic, etc.) or bronze, etc. In order to facilitate the installation and removal of the auxiliary member 52, the auxiliary member 52 may be integrally formed in a square shape, that is, the auxiliary member 52 is installed on the bracket 511 by means of a snap. When the motor mechanism 40 is removed, the eccentric shaft 413 is disengaged, and the auxiliary 52 can be removed for quick replacement.

Referring to fig. 5, in the present embodiment, the rotating eccentric shaft portion 413 can drive the bracket assembly 51 to reciprocate to drive the two diaphragms 32 to reciprocate to approach or separate from the corresponding pump covers 31, so that the volumes of the two diaphragm chambers 310 change in opposite directions. In this embodiment, two septums 32 are located on opposite sides of the stent assembly 51, the upper and lower sides as shown in FIG. 5. During operation of the motor 41, both diaphragms 32 move in the same direction. The carriage assembly 51 is capable of stretching the lower septum 32 upward as the upper septum 32 is pressed upward. At this time, the pressed upper diaphragm 32 moves toward the upper pump cover 31, and the stretched lower diaphragm 32 moves away from the lower pump cover 31, so that the volume of the upper diaphragm chamber 310 formed by the pressed diaphragm 32 and the upper pump cover 31 decreases, and the volume of the lower diaphragm chamber 310 formed by the stretched diaphragm 32 and the lower pump cover 31 increases. Referring to fig. 7, when the volume of the diaphragm chamber 310 at the upper side is increased, the liquid is sucked from the reservoir 300 through the flow passage 313 and the flow chamber 314, the first check valve 211 opens the bonnet inflow passage 222 and the second check valve 212 closes the bonnet outflow passage 223. When the volume of the diaphragm chamber 310 at the upper side is reduced, the liquid is discharged to the spray assembly 400 through the flow passage 313 and the flow-through chamber 314, the second check valve 212 opens the bonnet outflow passage 223 and the first check valve 211 closes the bonnet inflow passage 222. Similarly, the lower diaphragm chamber 310 also performs the same liquid discharging and sucking processes when the volume is decreased or increased, except that the lower diaphragm chamber 310 discharges the liquid when the upper diaphragm chamber 310 sucks the liquid; when the lower diaphragm chamber 310 sucks in the liquid, the upper diaphragm chamber 310 discharges the liquid. Such that liquid can flow from the reduced volume diaphragm chamber 310 out of the flow channel 313 for spraying by the spray assembly 400 and liquid can be drawn into the increased volume diaphragm chamber 310 to effect pumping of the liquid by the diaphragm pump 100.

In summary, the diaphragm pump 100 includes a pump body mechanism 10, a check valve mechanism 20, and a diaphragm mechanism 30. The check valve mechanism 20 and the diaphragm mechanism 30 are mounted on the pump body mechanism 10. The diaphragm mechanism 30 includes a pump cover 31 and a diaphragm 32 connected to the pump cover 31. A pump cover 31 is attached to the pump body mechanism 10 and covers the diaphragm 32 and the check valve mechanism 20. The pump cover 31 is opened with a first chamber 311 and a single flow passage 313 communicating with the first chamber 311. The check valve mechanism 20 is opened with a valve cover cavity 221. The diaphragm 32 seals the first chamber 311 to form the diaphragm chamber 310. A single flow passage 313 communicates between the bonnet chamber 221 and the diaphragm chamber 310.

In the diaphragm pump described above, the diaphragm chamber 310 and the check valve mechanism 20 are communicated by the single flow passage 313, which can reduce the complexity and manufacturing cost of the diaphragm pump 100, and reduce the liquid flow resistance.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.

Claims

1. The utility model provides a diaphragm pump, its characterized in that, includes pump body mechanism, check valve mechanism and diaphragm mechanism, check valve mechanism with diaphragm mechanism installs pump body mechanism, diaphragm mechanism includes the pump cover and connects the diaphragm of pump cover, the pump cover is installed pump body mechanism covers the diaphragm with check valve mechanism, first chamber and intercommunication have been seted up to the pump cover the single runner in first chamber, the valve cover chamber has been seted up to check valve mechanism, the diaphragm is sealed first chamber is in order to form the diaphragm chamber, single runner intercommunication the valve cover chamber with the diaphragm chamber.

2. The diaphragm pump of claim 1, wherein the pump cover defines a second chamber, the flow passage communicates the first chamber and the second chamber, and the valve cover chamber is correspondingly connected to the second chamber to form a flow chamber.

3. The diaphragm pump of claim 1 wherein the flow passage is formed with an opening in a side of the pump cover, the diaphragm mechanism including a plug disposed within the flow passage and blocking the opening.

4. The diaphragm pump of claim 1 wherein said check valve mechanism includes a check valve and a valve cover, said valve cover mounting said check valve to said pump body mechanism, said valve cover opening said valve cover cavity.

5. The diaphragm pump of claim 4, wherein said valve cover chamber is provided with a valve cover inflow passage and a valve cover outflow passage, said check valve includes a first check valve for controlling opening and closing of said valve cover inflow passage and a second check valve for controlling opening and closing of said valve cover outflow passage, said check valve mechanism is configured such that said second check valve closes said valve cover outflow passage when said first check valve opens said valve cover inflow passage, and said first check valve closes said valve cover inflow passage when said second check valve opens said valve cover outflow passage.

6. The diaphragm pump according to claim 5, wherein each of said first check valve and said second check valve comprises a valve seat, a valve spool mounted on said valve seat, and an elastic member engaged with said valve spool;

and the valve cores of the first one-way valve and the second one-way valve are installed in opposite directions.

7. The diaphragm pump of claim 6, wherein said valve seat of said first check valve is disposed in said pump body mechanism and said valve seat of said second check valve is disposed in said valve cover chamber.

8. The diaphragm pump of claim 1, wherein said diaphragm pump comprises an eccentric mechanism and a motor mechanism, said eccentric mechanism and said motor mechanism being mounted to said pump body mechanism, said eccentric mechanism connecting said motor mechanism and said diaphragm.

9. The diaphragm pump of claim 8, wherein said motor mechanism comprises a motor, a motor shaft of said motor comprising an eccentric shaft portion, said eccentric shaft portion being coupled to said eccentric mechanism, said motor for driving said motor shaft to reciprocate said diaphragm through said eccentric mechanism to increase or decrease a volume of said diaphragm chamber.

10. The diaphragm pump according to claim 9, wherein said motor comprises a motor body connected to said motor shaft, a surface of said motor body facing said pump body mechanism being provided with a protrusion, a side of said pump body mechanism being provided with a recess, said protrusion being received in said recess.

11. The diaphragm pump of claim 9, wherein said eccentric mechanism comprises a bracket assembly, said eccentric shaft portion rotatably disposed through said bracket assembly, said bracket assembly coupled to said diaphragm.

12. The diaphragm pump of claim 11 wherein said carriage assembly includes a bracket coupled to said diaphragm and an actuating member mounted on said eccentric shaft portion, said eccentric shaft portion rotating to drive said actuating member to reciprocate said bracket and said diaphragm.

13. The diaphragm pump of claim 12 wherein said carriage assembly comprises a support by which said diaphragm is supported on said carriage.

14. The diaphragm pump of claim 13, wherein said eccentric mechanism includes an auxiliary member disposed in correspondence with said driving member, said auxiliary member being adapted to contact said driving member, wherein, when said motor is operated, a motor shaft of said motor moves said driving member to cause said driving member to reciprocally abut against said auxiliary member, said bracket follows said auxiliary member to move therewith, thereby causing said bracket to move said diaphragm in a reciprocating motion.

15. The diaphragm pump according to claim 14, wherein a first engaging groove and a second engaging groove are formed on a surface of the auxiliary member facing away from the driving member, the bracket is shaped like a frame, a side frame of the bracket is engaged with the first engaging groove, and a locking block is protruded from the supporting member and engaged with the second engaging groove.

16. The diaphragm pump of claim 9, wherein said diaphragm pump includes a support bearing disposed in said pump body mechanism, said motor includes a motor body, said motor shaft is connected to said motor body, and an end of said motor shaft remote from said motor body mounts said support bearing.

17. The diaphragm pump of claim 8 wherein said diaphragm pump includes a plug mechanism, said plug mechanism being connected to said motor mechanism.

18. An agricultural unmanned aerial vehicle is characterized by comprising a machine body, a liquid storage tank for storing liquid medicine, a spraying assembly and a diaphragm pump, wherein the diaphragm pump is communicated with the liquid storage tank and the spraying assembly through a pipeline, and is used for pumping the liquid of the liquid storage tank to the spraying assembly, the diaphragm pump comprises a pump body mechanism, a one-way valve mechanism and a diaphragm mechanism, the one-way valve mechanism and the diaphragm mechanism are arranged on the pump body mechanism, the diaphragm mechanism comprises a pump cover and a diaphragm connected with the pump cover, the pump cover is arranged on the pump body mechanism and covers the diaphragm and the one-way valve mechanism, the pump cover is provided with a first cavity and a single flow passage communicated with the first cavity, the one-way valve mechanism is provided with a valve cover cavity, the diaphragm seals the first cavity to form a diaphragm cavity, and the single flow passage is communicated with the valve cover cavity and the diaphragm cavity.

19. The agricultural unmanned aerial vehicle of claim 18, wherein the pump cover is provided with a second cavity, the flow passage communicates with the first cavity and the second cavity, and the valve cover cavity is correspondingly connected with the second cavity to form a flow-through cavity.

20. The agricultural drone of claim 18, wherein the flow passage forms an opening in a side of the pump cover, and the diaphragm mechanism includes a plug disposed within the flow passage and blocking the opening.

21. The agricultural drone of claim 18, wherein the one-way valve mechanism includes a one-way valve and a valve cover mounting the one-way valve to the pump body mechanism, the valve cover opening the valve cover cavity.

22. The agricultural drone of claim 21, wherein the valve cover cavity is provided with a valve cover inflow channel and a valve cover outflow channel, the one-way valves including a first one-way valve for controlling opening and closing of the valve cover inflow channel and a second one-way valve for controlling opening and closing of the valve cover outflow channel, the one-way valve mechanism configured such that when the first one-way valve opens the valve cover inflow channel, the second one-way valve closes the valve cover outflow channel, and when the second one-way valve opens the valve cover outflow channel, the first one-way valve closes the valve cover inflow channel.

23. The agricultural drone of claim 22, wherein each of the first and second one-way valves includes a valve seat, a valve spool mounted on the valve seat, and a resilient member cooperating with the valve spool;

24. The agricultural drone of claim 23, wherein the valve seat of the first one-way valve is disposed in the pump body mechanism and the valve seat of the second one-way valve is disposed in the valve cover cavity.

25. The agricultural drone of claim 18, wherein the diaphragm pump includes an eccentric mechanism and a motor mechanism, the eccentric mechanism and the motor mechanism being mounted to the pump body mechanism, the eccentric mechanism connecting the motor mechanism and the diaphragm.

26. The agricultural drone of claim 25, wherein the motor mechanism includes a motor, a motor shaft of the motor includes an eccentric shaft portion, the eccentric shaft portion is connected to the eccentric mechanism, and the motor is configured to drive the motor shaft to reciprocate the diaphragm via the eccentric mechanism to increase or decrease a volume of the diaphragm chamber.

27. The agricultural drone of claim 26, wherein the motor includes a motor body connected to the motor shaft, a surface of the motor body facing the pump body mechanism is provided with a protrusion, a side of the pump body mechanism is provided with a groove, and the protrusion is received in the groove.

28. The agricultural drone of claim 26, wherein the eccentric mechanism includes a bracket assembly, the eccentric shaft portion rotatably threaded through the bracket assembly, the bracket assembly coupled to the membrane.

29. An agricultural drone according to claim 28, wherein the carriage assembly includes a bracket and a drive member, the bracket being connected to the diaphragm, the drive member being mounted on the eccentric shaft portion, the eccentric shaft portion rotating to drive the drive member to reciprocate the bracket and the diaphragm.

30. An agricultural drone according to claim 29, wherein the carriage assembly includes a support by which the membrane is supported on the carriage.

31. An agricultural drone according to claim 30, wherein the eccentric mechanism includes an auxiliary member disposed in correspondence with the driving member, the auxiliary member being adapted to contact the driving member, wherein, when the motor is operated, a motor shaft of the motor moves the driving member to cause the driving member to reciprocally abut against the auxiliary member, and the carriage follows the auxiliary member to cause the carriage to move the diaphragm in a reciprocating motion.

32. The agricultural unmanned aerial vehicle of claim 31, wherein a first engaging groove and a second engaging groove are formed on a surface of the auxiliary member facing away from the driving member, the bracket is shaped like a frame, a side frame of the bracket is engaged with the first engaging groove, the supporting member is provided with a protruding engaging block, and the engaging block is engaged with the second engaging groove.

33. The agricultural drone of claim 26, wherein the diaphragm pump includes a support bearing disposed in the pump body mechanism, the motor includes a motor body, the motor shaft is connected to the motor body, and the support bearing is mounted to an end of the motor shaft distal from the motor body.

34. An agricultural drone according to claim 25, wherein the diaphragm pump includes a plug mechanism that connects the motor mechanism.