阅读说明：本技术 隔膜泵及农业无人机 (Diaphragm pump and agricultural unmanned aerial vehicle ) 是由 舒展 吴晓龙 周乐 于 2018-12-05 设计创作，主要内容包括：一种隔膜泵(100)及农业无人机(1000)，隔膜泵(100)包括泵体机构(10)、隔膜机构(30)、电机机构(40)和偏心机构(50)，隔膜机构(30)、电机机构(40)和偏心机构(50)安装在泵体机构(10)上，电机机构(40)包括电机(41)，隔膜机构(30)包括隔膜(32)，偏心机构(50)包括支架组件(51)和辅助件(52)，支架组件(51)包括支架(511)以及驱动件(512)，支架(511)连接隔膜(32)，辅助件(52)安装在支架(511)上，驱动件(512)安装在电机(41)的电机轴(412)上，辅助件(52)与驱动件(512)对应设置，用于与驱动件(512)接触。其中，电机(41)工作时，电机(41)的电机轴(412)带动驱动件(512)运动，使驱动件(512)往复地抵接辅助件(52)，支架(511)跟随辅助件(52)一起运动，从而使支架(511)带动隔膜(32)做往复运动。如此，通过增加辅助件(52)的方法解决偏心机构(50)的磨损问题，当隔膜泵(100)运行时，磨损辅助件(52)，而不会损坏或减少损坏驱动件(512)和支架(511)，提高了隔膜泵(100)的使用寿命和可靠性。(The utility model provides a diaphragm pump (100) and agricultural unmanned aerial vehicle (1000), diaphragm pump (100) is including pump body mechanism (10), diaphragm mechanism (30), motor mechanism (40) and eccentric mechanism (50) are installed on pump body mechanism (10), motor mechanism (40) are including motor (41), diaphragm mechanism (30) are including diaphragm (32), eccentric mechanism (50) are including bracket component (51) and auxiliary member (52), bracket component (51) are including support (511) and driving piece (512), diaphragm (32) are connected in support (511), auxiliary member (52) are installed on support (511), driving piece (512) is installed on motor shaft (412) of motor (41), auxiliary member (52) correspond the setting with driving piece (512), be used for contacting with driving piece (512). When the motor (41) works, a motor shaft (412) of the motor (41) drives the driving part (512) to move, so that the driving part (512) is in reciprocating contact with the auxiliary part (52), and the bracket (511) moves along with the auxiliary part (52), so that the bracket (511) drives the diaphragm (32) to do reciprocating motion. Thus, the wear problem of the eccentric mechanism (50) is solved by adding the auxiliary member (52), and the auxiliary member (52) is worn when the diaphragm pump (100) is operated without damaging or reducing the damage to the driving member (512) and the bracket (511), thereby improving the service life and reliability of the diaphragm pump (100).)

1. The diaphragm pump applied to the agricultural unmanned aerial vehicle is characterized by comprising a pump body mechanism, a diaphragm mechanism, a motor mechanism and an eccentric mechanism, wherein the diaphragm mechanism, the motor mechanism and the eccentric mechanism are installed on the pump body mechanism;

when the motor works, the motor shaft of the motor drives the driving piece to move, so that the driving piece is in reciprocating butt joint with the auxiliary piece, and the support moves along with the auxiliary piece, so that the support drives the diaphragm to do reciprocating motion.

2. The diaphragm pump of claim 1 wherein said bracket defines a mounting through-hole, said drive member being at least partially disposed in said mounting through-hole, said auxiliary member being disposed between said drive member and a sidewall of said mounting through-hole.

3. The diaphragm pump of claim 1 wherein said auxiliary member is mounted to said bracket by a snap-fit arrangement.

4. The diaphragm pump of claim 1 wherein said carriage assembly comprises a support by which said diaphragm is supported on said carriage.

5. The diaphragm pump according to claim 4, 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.

6. The diaphragm pump according to any of claims 1-5, wherein said diaphragm is attached to said bracket by screws.

7. The diaphragm pump according to any of claims 1-6, wherein said diaphragm pump comprises a support bearing provided in said pump body mechanism, said motor comprises a motor body, said motor shaft is connected to said motor body, and an end of said motor shaft remote from said motor body is mounted with said support bearing.

8. The diaphragm pump of claim 1 wherein a motor shaft of said motor includes an eccentric shaft portion, said drive member being mounted on said eccentric shaft portion such that said drive member reciprocally abuts said auxiliary member;

or the driving piece is sleeved on the motor shaft and provided with an eccentric bulge, so that the driving piece is in reciprocating abutting joint with the auxiliary piece.

9. The diaphragm pump of claim 1 wherein said diaphragm mechanism is formed with a diaphragm chamber, said motor for driving said motor shaft to reciprocate said diaphragm through said eccentric mechanism to increase or decrease the volume of said diaphragm chamber.

10. The diaphragm pump according to claim 1, 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 1 wherein said pump includes a plug mechanism, said plug mechanism being connected to said motor mechanism.

12. The diaphragm pump of claim 1, wherein said diaphragm pump includes a one-way valve mechanism mounted to said pump body mechanism, said diaphragm mechanism including a pump cover connected to said diaphragm, said one-way valve mechanism including a one-way valve and a valve cover, said valve cover mounting said one-way valve to said pump body mechanism, said pump cover mounted to said pump body mechanism and covering said diaphragm and said valve cover.

13. The diaphragm pump of claim 12, wherein the pump cover defines a first chamber, a second chamber, and a flow passage communicating the first chamber and the second chamber, the valve cover defines a valve cover chamber, the valve cover chamber is correspondingly connected to the second chamber to form a flow passage chamber, the diaphragm seals the first chamber to form a diaphragm chamber, and the diaphragm increases or decreases in volume as it reciprocates.

14. The diaphragm pump of claim 13 wherein a single pump cover defines a single flow passage.

15. The diaphragm pump of claim 13 or 14 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.

16. An agricultural unmanned aerial vehicle, which is characterized in that, includes fuselage, a liquid reserve tank for storing liquid medicine, a spraying component and a diaphragm pump, the diaphragm pump communicates the liquid reserve tank with the spraying component through a pipeline, and is used for taking the liquid pump of the liquid reserve tank for the spraying component, the diaphragm pump includes a pump body mechanism, a diaphragm mechanism, a motor mechanism and an eccentric mechanism, the diaphragm mechanism, the motor mechanism and the eccentric mechanism are installed at the pump body mechanism, the motor mechanism includes a motor, the diaphragm mechanism includes a diaphragm, the eccentric mechanism includes a bracket component and an auxiliary component, the bracket component includes a bracket and a driving piece, the bracket is connected with the diaphragm, the auxiliary component is installed at the bracket, the driving piece is installed on the motor shaft of the motor, the auxiliary component corresponds to the driving piece, for contacting the driver;

when the motor works, the motor shaft of the motor drives the driving piece to move, so that the driving piece is in reciprocating butt joint with the auxiliary piece, and the support moves along with the auxiliary piece, so that the support drives the diaphragm to do reciprocating motion.

17. The agricultural drone of claim 16, wherein the bracket defines a mounting through-hole, the drive member is at least partially disposed in the mounting through-hole, and the auxiliary member is disposed between the drive member and a sidewall of the mounting through-hole.

18. The agricultural drone of claim 16, wherein the auxiliary member is mounted to the mount by a snap-fit structure.

19. The agricultural drone of claim 16, wherein the cradle assembly includes a support by which the membrane is supported on the cradle.

20. The agricultural unmanned aerial vehicle of claim 19, 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.

21. An agricultural drone according to any one of claims 16 to 20, wherein the membrane is connected to the mount by screws.

22. The agricultural drone of any one of claims 16 to 21, 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 at an end of the motor shaft distal from the motor body.

23. The agricultural drone of claim 16, wherein a motor shaft of the motor includes an eccentric shaft portion, the drive member being mounted on the eccentric shaft portion such that the drive member reciprocally abuts the auxiliary member;

or the driving piece is sleeved on the motor shaft and provided with an eccentric bulge, so that the driving piece is in reciprocating abutting joint with the auxiliary piece.

24. The agricultural drone of claim 16, wherein the diaphragm mechanism is formed with a diaphragm chamber, the motor for driving the motor shaft to reciprocate the diaphragm via the eccentric mechanism to increase or decrease a volume of the diaphragm chamber.

25. The agricultural drone of claim 16, 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.

26. The agricultural drone of claim 16, wherein the pump includes a plug mechanism, the plug mechanism connecting the motor mechanism.

27. The agricultural drone of claim 16, wherein the diaphragm pump includes a one-way valve mechanism mounted to the pump body mechanism, the diaphragm mechanism including a pump cover connected to the diaphragm, the one-way valve mechanism including a one-way valve and a valve cover mounting the one-way valve to the pump body mechanism, the pump cover mounted to the pump body mechanism and covering the diaphragm and the valve cover.

28. The agricultural unmanned aerial vehicle of claim 27, wherein the pump cover defines a first cavity, a second cavity, and a flow passage communicating the first cavity and the second cavity, the valve cover defines a valve cover cavity, the valve cover cavity is correspondingly connected to the second cavity to form a flow passage cavity, the diaphragm seals the first cavity to form a diaphragm cavity, and the diaphragm increases or decreases in volume when reciprocating.

29. The agricultural drone of claim 28, wherein a single pump cover defines a single flow passage.

30. The agricultural unmanned aerial vehicle of claim 27 or 28, wherein the flow passage is formed with an opening at a side of the pump cover, and the diaphragm mechanism includes a plug disposed within the flow passage and blocking the opening.

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. When the diaphragm pump works, the diaphragm of the diaphragm pump needs to reciprocate, and the reciprocating motion of the diaphragm is generally realized by adopting an eccentric cam mechanism. However, when the pump is operated for a long period of time, wear of the eccentric cam mechanism is inevitable, which tends to shorten the reciprocating stroke of the diaphragm, reduce the flow rate, and lower the reliability of the pump.

Disclosure of Invention

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

The diaphragm pump comprises a pump body mechanism, a diaphragm mechanism, a motor mechanism and an eccentric mechanism, wherein the diaphragm mechanism, the motor mechanism and the eccentric mechanism are arranged on the pump body mechanism;

when the motor works, the motor shaft of the motor drives the driving piece to move, so that the driving piece is in reciprocating butt joint with the auxiliary piece, and the support moves along with the auxiliary piece, so that the support drives the diaphragm to do reciprocating motion.

In the diaphragm pump, the abrasion problem of the eccentric mechanism is solved by adding the auxiliary piece, when the diaphragm pump operates, the auxiliary piece is abraded, the driving piece and the bracket cannot be damaged or are reduced to be damaged, and the service life and the reliability of the diaphragm pump are improved.

In some embodiments, the bracket defines a mounting through-hole, the driving member is at least partially disposed in the mounting through-hole, and the auxiliary member is disposed between the driving member and a sidewall of the mounting through-hole.

In some embodiments, the auxiliary element is mounted to the bracket by a snap-fit arrangement.

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

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 certain embodiments, wherein the diaphragm is attached to the frame by screws.

In some embodiments, 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 an end of the motor shaft remote from the motor body is mounted with the support bearing.

In certain embodiments, a motor shaft of the motor includes an eccentric shaft portion on which the drive member is mounted such that the drive member reciprocally abuts the auxiliary member;

or the driving piece is sleeved on the motor shaft and provided with an eccentric bulge, so that the driving piece is in reciprocating abutting joint with the auxiliary piece.

In some embodiments, the diaphragm mechanism is formed with a diaphragm chamber, and the motor is configured to drive the motor shaft to reciprocate the diaphragm through the eccentric mechanism to increase or decrease a 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 certain embodiments, the pump includes a plug mechanism coupled to the motor mechanism.

In some embodiments, the diaphragm pump includes a one-way valve mechanism mounted to the pump body mechanism, the diaphragm mechanism includes a pump cover connected to the diaphragm, the one-way valve mechanism includes a one-way valve mounted to the pump body mechanism and a valve cover mounted to the pump body mechanism and covering the diaphragm and the valve cover.

In some embodiments, the pump cover is provided with a first cavity, a second cavity and a flow passage communicating the first cavity with the second cavity, the valve cover is provided with a valve cover cavity, the valve cover cavity and the second cavity are correspondingly connected to form a flow cavity, the diaphragm seals the first cavity to form a diaphragm cavity, and when the diaphragm reciprocates, the volume of the diaphragm cavity is increased or decreased.

In some embodiments, a single pump cover is provided with a single flow passage.

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.

The agricultural unmanned aerial vehicle comprises a machine body, a liquid storage tank for storing liquid medicine, a spraying assembly and the diaphragm pump, 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, solve eccentric mechanism's wearing and tearing problem through the method that increases the auxiliary member, when the diaphragm pump operation, wear and tear the auxiliary member, and can not damage or reduce and damage driving piece and support, improved the life and the reliability of diaphragm pump.

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 liquid inlet 116, the liquid outlet 117, 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 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 present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the 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 present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. 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.

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 according to the embodiment of the present invention, 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, an agricultural drone 1000 according to an embodiment of the present invention includes a body 200, a tank 300 for storing a 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 200. 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 present embodiment, 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 directly 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 of the motor shaft 412 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 412 may not have the eccentric shaft portion 413, and the driving member 512 may be directly fitted over the motor shaft 412, and an eccentric protrusion may be formed on the driving member 512, so that the driving member 512 is reciprocally abutted against the auxiliary member 52. For example, the driving member 512 can be an eccentric bearing disposed on the motor shaft 412, and the eccentric bearing performs an eccentric motion when the motor shaft 412 rotates, so as to drive the bracket assembly 51 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 diaphragm mechanism 30, a motor mechanism 40 and an eccentric mechanism 50, the diaphragm mechanism 30, the motor mechanism 40 and the eccentric mechanism 50 are mounted on the pump body mechanism 10, the motor mechanism 40 includes a motor 41, the diaphragm mechanism 30 includes a diaphragm 32, the eccentric mechanism 50 includes a bracket assembly 51 and an auxiliary member 52, the bracket assembly 51 includes a bracket 511 and a driving member 512, the bracket 511 is connected to the diaphragm 32, the auxiliary member 52 is mounted on the bracket 511, the driving member 512 is mounted on a motor shaft 412 of the motor 41, and the auxiliary member 52 is disposed corresponding to the driving member 512 and is used for contacting with the driving member 512. When the motor 41 is operated, the motor shaft 412 of the motor 41 drives the driving member 512 to move, so that the driving member 512 is in contact with the auxiliary member 52 in a reciprocating manner, and the bracket 511 moves along with the auxiliary member 52, so that the bracket 511 drives the diaphragm 32 to move in a reciprocating manner.

In the diaphragm pump 100 described above, 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 with less damage to the driving member 512 and the bracket 511, thereby improving the life span and reliability of the diaphragm pump 100.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above examples provide many different embodiments or examples for implementing different features of the invention. In order to simplify the invention, specific example components and arrangements are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself 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.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present 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.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.