CN116807274A

CN116807274A - Bag chamber mechanism, diaphragm pump, foaming device and hand washer

Info

Publication number: CN116807274A
Application number: CN202310251914.4A
Authority: CN
Inventors: 刘尊峰; 薛际
Original assignee: Xiaowei Shanghai Precision Mould Co ltd
Current assignee: Xiaowei Shanghai Precision Mould Co ltd
Priority date: 2022-03-26
Filing date: 2023-03-15
Publication date: 2023-09-29
Also published as: CN220069582U

Abstract

The embodiment of the invention relates to a bathroom disinfection device, in particular to a capsule cavity mechanism, a diaphragm pump, a foaming device and a hand washing machine. Therefore, when the liquid outlet direction of the diaphragm pump is transversely arranged, the liquid storage container is vertically arranged, the height of the diaphragm pump is reduced by about one half, the overall height and the volume of the diaphragm pump are greatly reduced, the volume of the diaphragm pump is smaller, and when the diaphragm pump is applied to medium output equipment such as a liquid soap machine, the structure of the medium output equipment is more compact, and the medium output equipment is convenient to place. Meanwhile, each bag body is used for being connected with the driving device and simultaneously compressed or simultaneously stretched under the driving force of the driving device, and compared with the prior art, the liquid hanging phenomenon of a liquid outlet nozzle or a liquid outlet end of the foaming mechanism can be effectively avoided.

Description

Bag chamber mechanism, diaphragm pump, foaming device and hand washer

Technical Field

The embodiment of the invention relates to a bathroom disinfection device, in particular to a capsule cavity mechanism, a diaphragm pump, a foaming device and a hand washing machine.

Background

The hand cleanser and the bath lotion are washing and bathroom products which are frequently used in daily life of people and are usually placed in a kitchen, a toilet and the like. Hand sanitizers and body washes are typically stored in containers from which a liquid medium is pressed by pressing a pressing device disposed at the top of the container. In use, the pressed liquid medium is typically applied to the site to be washed.

Although some liquid pumping devices or foaming devices are currently used for foaming a liquid medium when the liquid medium is pumped out, the inventor finds that the liquid pumping devices and the foaming devices are generally large in size and need to occupy a large area to put the liquid pumping devices and the foaming devices, and the space for using a kitchen and a toilet is more limited for a kitchen and a toilet with small space.

In addition, the inventor also found that the liquid hanging phenomenon is often formed at the liquid outlet nozzle or the liquid outlet end after the liquid medium is pumped out by the existing foaming device, because the existing foaming device adopts the diaphragm pump to realize the suction and pumping of the gas and the liquid medium, and when the diaphragm pump works, a certain time difference is generated between the suction and the pumping of the gas and the liquid medium, so that the foaming device always has a cavity in a positive pressure state after the liquid medium is pumped out by the diaphragm pump, and the liquid medium which is not pumped out by the foaming device after the liquid pumping is finished overflows from the liquid outlet nozzle or the liquid outlet end under the pressure of positive pressure, so that the liquid hanging phenomenon is caused, not only the use feeling of a user is influenced, but also the liquid medium overflowed from the liquid outlet nozzle or the liquid outlet end is directly contacted with the external environment, so that the liquid outlet nozzle or the liquid outlet end is polluted.

Finally, the inventor also found that the current foaming device may leak liquid in the liquid pumping process, and the leaked liquid may drop onto other components of the device, so that other components may be corroded.

Disclosure of Invention

The invention aims to design a capsule cavity mechanism, a diaphragm pump, a foaming device and a hand washing machine, which not only have compact structure and smaller size, but also can avoid the phenomenon of hanging liquid at a liquid outlet or a liquid outlet end after pumping out liquid medium.

In order to achieve the above object, an embodiment of the present invention provides a capsule mechanism applied to a diaphragm pump, in which a medium pumping direction of the capsule mechanism is perpendicular to a medium suction direction and the same as a liquid outlet direction of the diaphragm pump.

In addition, the capsule mechanism includes:

a medium inlet and outlet bracket having a suction side formed by a plurality of medium suction ends and a pump side formed by a plurality of medium pump outlet ends; the medium suction end and the medium pump outlet are the same in number and are arranged in a unique corresponding mode, and the medium suction end and the medium pump outlet are the same in number and are arranged in a unique corresponding mode;

the medium extraction component is arranged on the medium inlet and outlet bracket and comprises a plurality of bag bodies; the number of the capsules is the same as that of the medium suction end and the medium pump outlet, and the capsules are arranged in a unique corresponding mode;

Each bag body is also used for being connected with a driving device of the diaphragm pump and used for simultaneously stretching or simultaneously compressing under the driving of the driving device;

when the capsules are stretched simultaneously, the capsules are respectively used for sucking liquid or gas media simultaneously through the media suction ends which are arranged uniquely and correspondingly; when the capsules are compressed simultaneously, the capsules are respectively used for pumping the sucked liquid or gas medium out of the medium pump outlet which is arranged correspondingly only.

In addition, an embodiment of the present invention also provides a diaphragm pump including: a capsule mechanism as described above;

and the driving device is connected with each capsule body of the medium extraction component and is used for driving each capsule body to be compressed or stretched simultaneously.

In addition, an embodiment of the present invention also provides a foaming mechanism, including:

a diaphragm pump as described above;

a mixing chamber having an entry side comprising a plurality of media entry ends, a media exit side disposed away from the entry side; the medium inlet ends are communicated with the medium pump outlets which are arranged uniquely and correspondingly respectively;

Wherein, the mixing bin is used for receiving the multipath medium pumped out from the pump-out side of the diaphragm pump through the inlet side and is used for mixing the multipath medium, and the mixing bin is also used for pumping out the mixed medium from the medium discharge side.

In addition, the embodiment of the invention also provides a hand washer, which comprises: a foaming mechanism as described above, a reservoir; wherein, at least one medium suction end is used for sucking the liquid medium in the liquid storage container.

Compared with the prior art, the embodiment of the invention has the advantages that the medium pumping direction of the capsule cavity mechanism is perpendicular to the medium sucking direction and is the same as the liquid outlet direction of the diaphragm pump, so that the liquid outlet direction of the diaphragm pump can be transversely arranged and the liquid storage container is vertically arranged in application, the whole height of the diaphragm pump can be greatly reduced, the volume of the diaphragm pump is smaller, and when the diaphragm pump is applied to medium output equipment such as a hand sanitizer machine, the structure of the medium output equipment is more compact, and the placement of the medium output equipment is facilitated. In addition, as the driving device of the diaphragm pump can simultaneously compress or stretch each bag body of the medium pumping component, the diaphragm pump can not generate negative pressure when the medium output device is discharged, and thus the phenomenon of hanging liquid when the nozzle of the medium output device is discharged can be effectively avoided.

Drawings

FIG. 1 is an exploded view of a media access rack and a first seal assembly and a second seal assembly, respectively, in accordance with some embodiments of the present invention;

FIG. 2 is an exploded view of a media access rack and media extraction component in accordance with some embodiments of the present invention;

FIG. 3 is a schematic view showing the internal structure of a capsule mechanism according to some embodiments of the present invention;

FIG. 4 is a cross-sectional view at B-B in FIG. 3;

FIG. 5 is a cross-sectional view taken at D-D of FIG. 4;

FIG. 6 is an exploded view of a medium access rack, a medium extraction member, and a drive device according to some embodiments of the invention;

FIG. 7 is a schematic view of an explosion between a media access rack, a media extraction assembly, and a drive device, in accordance with some embodiments of the present invention;

FIG. 8 is an exploded view of a swing arm and a fixed bracket of a capsule in some embodiments of the invention;

FIG. 9 is a schematic top view of a balloon swing arm assembled with a fixed bracket according to some embodiments of the present invention;

FIG. 10 is a schematic diagram of an assembly of a diaphragm pump in accordance with some embodiments of the present invention;

FIG. 11 is a schematic diagram of a structure of a medium pump with a liquid outlet in some embodiments of the present invention;

FIG. 12 is an isometric view of the bottom of the foaming mechanism in some embodiments of the invention;

FIG. 13 is an isometric view of the top of the foaming mechanism in some embodiments of the application;

FIG. 14 is a schematic view showing the assembly of the foaming mechanism and the bottom cover body in some embodiments of the application;

FIG. 15 is an exploded view of a mixing chamber in accordance with some embodiments of the present application;

FIG. 16 is an exploded view of a bottom cover and a reservoir of a pump according to some embodiments of the present application;

fig. 17 is a schematic view of an assembly of a hand washer in accordance with some embodiments of the present application;

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the claimed application may be practiced without these specific details and with various changes and modifications based on the following embodiments.

Example 1

The first embodiment of the present application relates to a capsule mechanism which is applied to a diaphragm pump as shown in fig. 3 to 6, and whose medium pumping direction is perpendicular to the medium suction direction and the same as the liquid discharging direction of the diaphragm pump as shown in fig. 1 and 2 in combination. Therefore, when the liquid outlet direction of the diaphragm pump is transversely arranged, the liquid storage container is vertically arranged, the height of the diaphragm pump can be reduced from 98mm to 52mm, and the height is reduced by nearly one half, so that the overall height and the volume of the diaphragm pump can be greatly reduced, the volume of the diaphragm pump 1 is smaller, when the diaphragm pump is applied to medium output equipment such as a liquid soap machine, the structure of the medium output equipment is more compact and the medium output equipment is convenient to place by combining with the structure shown in fig. 6.

Specifically, in the present embodiment, as shown in fig. 2, the capsule mechanism includes: medium in and out of the bracket 1 and medium extracting part 2. Therein, as shown in connection with fig. 1, the medium inlet and outlet bracket 1 has a suction side 11 formed by a number of medium suction ends 111, and a pump-out side 12 formed by a number of medium pump-out ends 121. Also, the medium suction port 111 and the medium pump outlet port 121 are the same in number and are provided uniquely corresponding to each other.

Next, as shown in fig. 2, a medium extracting member 2 is provided to the medium inlet and outlet bracket 1, and the medium extracting member 2 includes: a plurality of capsules 21. And, the number of the capsules 21 is the same as the number of the medium suction ends 111 and the medium pump outlets 121, respectively, and is uniquely provided correspondingly.

In practical use, as shown in fig. 4, 5 and 6, each of the capsules 21 is further adapted to be connected to the driving device 3 of the diaphragm pump and to be simultaneously stretched or simultaneously compressed under the driving of the driving device 3, and when each of the capsules 21 is simultaneously stretched, as shown in fig. 4, each of the capsules 21 may be respectively adapted to simultaneously suck a liquid or gaseous medium through the uniquely corresponding set medium suction port 111, and when each of the capsules 21 is simultaneously compressed, as shown in fig. 5, each of the capsules 21 may be respectively adapted to simultaneously pump the sucked liquid or gaseous medium through the uniquely corresponding set medium pump outlet 121.

It is thus clear that, because each of the capsules 21 can be compressed and stretched simultaneously under the drive of the driving device 3, when the capsule cavity mechanism is in a compressed state after the liquid pumping is completed, positive pressure is not generated in the foaming mechanism, and thus the liquid hanging phenomenon of the nozzle 3 of the foaming mechanism can be effectively avoided.

Specifically, in the present embodiment, as shown in fig. 2, the medium inlet/outlet holder 1 further includes: the medium inlet and outlet side 13 is formed by a plurality of medium inlet and outlet ends 131, and the number of the medium inlet and outlet ends 131 is the same as the number of the medium suction ends 111, the medium pump outlet ends 121 and the capsules 21 respectively, and is uniquely and correspondingly arranged.

Meanwhile, as shown in fig. 6, each of the capsules 21 has an opening 211 for allowing liquid or gas medium to pass in and out, and the opening 211 of each of the capsules 21 is respectively communicated with the only corresponding medium inlet and outlet 131, so that the capsules 21 can suck and pump the liquid or gas medium when being stretched or compressed by the medium inlet and outlet 131. In the present embodiment, as shown in fig. 2, the medium inlet/outlet port 131 is constituted by a medium inlet port 1311 and a medium outlet port 1312. Suction of the liquid or gaseous medium is accomplished by creating a negative pressure at the medium suction end 111 when the bladder 21 is stretched through the medium inlet port 1311 as shown in fig. 3 and 4, while pumping of the liquid or gaseous medium is accomplished by providing a positive pressure at the medium pump outlet 121 through the medium outlet port 1312 when the bladder 21 is compressed, as shown in fig. 5.

In order to ensure the sealing performance of each bag 21 when sucking and pumping out the medium, the medium extracting member 2 further includes, as shown in fig. 2: the flexible member 22, and the flexible member 22 is provided on the medium inlet and outlet bracket 1, and at the same time, as shown in fig. 1, the flexible member 22 has a first sealing side 221 attached to the medium inlet and outlet side 13, and a second sealing side 222 opposite to the first sealing side 221. Each of the capsules 21 is formed by extruding a portion of the flexible member 22 from the first sealing side 221 to the second sealing side 222 in a direction away from the medium inlet and outlet side 13, and the first sealing side 221 is formed with openings 211 of each of the capsules 21 after extrusion. It can be seen from this that, since each of the capsules 21 is integrally extruded from the flexible member 22 in the direction from the first sealing side 221 to the second sealing side 22, the whole flexible member 22 is integral with each of the capsules 21, and each of the capsules 21 can be brought into surface contact with the medium inlet and outlet side 13 by means of the first sealing side 221 of the flexible member 22, so that the sealing performance of each of the capsules 21 can be improved and leakage phenomenon can be avoided when sucking and pumping liquid or gaseous medium.

In addition, as shown in fig. 1, the capsule mechanism of the present embodiment further includes: a first seal assembly 4 and a second seal assembly 5. Wherein the first sealing member 4 is disposed at the suction side 11 of the medium inlet and outlet bracket 1, and the first sealing member 4 can open each medium suction end 111 when each balloon 21 is simultaneously stretched, as shown in connection with fig. 3 and 4, and can close each medium suction end 111 when each balloon 21 is simultaneously compressed.

Also, in order that the first sealing members 4 may open or close the respective medium suction ends 111 in the stretched and compressed state of the respective capsules 21, the respective first valve sheet members 4 may have the following structure, as shown in fig. 1, the first sealing members 4 include: a first flexible seal 42, a first valve plate element 43. The first flexible sealing member 42 is disposed on the suction side 11, and the first flexible sealing member 42 has a plurality of first through holes 421, and meanwhile, the number of the first through holes 421 is the same as the number of the medium suction ends 111, and is disposed only correspondingly. In addition, as shown in fig. 1, the first valve element 43 is disposed on a side of the first flexible sealing member 42 facing away from the suction side 11, and the first valve element 43 has a plurality of first elastic sheet bodies 431, and the number of the first elastic sheet bodies 431 is the same as that of the medium suction ends 111 and the first through holes 421 respectively, and is disposed in a unique corresponding manner, and each first elastic sheet body 431 is also deflectable into the corresponding first through hole 421 respectively.

In practical application, when any medium suction end 111 stretches in the bag 21 which is only arranged correspondingly, as shown in fig. 3 and fig. 4, the suction end 111 generates negative pressure and drives the first elastic piece body 431 which is only arranged correspondingly to deflect towards the first through hole 421 which is only arranged correspondingly. When the first elastic body 431 deflects toward the first through hole 421, as shown in fig. 1, the first elastic body 431 opens the medium suction end 111. On the contrary, when any medium suction end 111 compresses in the bag 21 that is uniquely and correspondingly disposed, as shown in fig. 5, the medium suction end 111 generates positive pressure and drives the uniquely and correspondingly disposed first elastic piece body 431 to return to the original state, and when the first elastic piece body 431 returns to the original state, the first elastic piece body 431 can close the uniquely and correspondingly disposed medium suction end 111. Note that, as shown in fig. 4 and 5, the first flexible seal member 42 and the first valve plate element 43 may be integrally formed, but in some embodiments, the first flexible seal member 42 and the first valve plate element 43 may be connected by a snap-fit connection, and in the present embodiment, the structure of the first flexible seal member 42 and the first valve plate element 43 is not specifically limited. In order to enable each of the first elastic sheet bodies 431 to close each of the corresponding one of the medium suction ends 111 when returning to the initial state, i.e., when deflecting in a direction away from each of the corresponding one of the medium suction ends 111, in some embodiments, as shown in fig. 1, the medium suction ends 111 are tapered holes, i.e., the diameter of the tapered holes gradually increases from the suction side 11 toward a direction away from the suction side 11, that is, the diameter of the tapered holes on the suction side 11 side should be larger than the diameter of other portions, and at the same time, it is also necessary to ensure that the diameter of the tapered holes on the suction side 11 side should be substantially the same as the diameter of the first elastic sheet bodies 431, so that when a negative pressure is generated in the capsule 21, the first elastic sheet bodies 431 can deflect into the tapered holes, thereby opening the liquid inlet sides of the tapered holes, and when a positive pressure is generated in the capsule 21, the first elastic sheet bodies 431 can deflect out of the tapered holes, as shown in fig. 1, thereby avoiding that the medium that has been sucked into each of the capsules 21 from flowing back through each of the medium suction ends 111.

Likewise, the second sealing assembly 5 may adopt the same structure as the first sealing assembly 4. Specifically, as shown in fig. 1, the second sealing assembly 5 may be disposed on the pump-out side 12 of the medium inlet and outlet bracket 1, and when the respective capsules 21 are simultaneously compressed, the second sealing assembly 5 may open the respective medium pump-out ends 121 as shown in fig. 5, and when the respective capsules 21 are simultaneously expanded and contracted, the second sealing assembly 5 may close the respective medium pump-out ends 121 as shown in fig. 3 and 4.

Also, as shown in fig. 1, the second seal assembly 5 includes: a second flexible seal 52, a second valve plate element 53. The second flexible sealing element 52 is disposed on the pump-out side 12, and the second flexible sealing element 52 has a plurality of second through holes 521, and at the same time, the number of second through holes 521 is the same as the number of medium pump-out ends 121, and is disposed only correspondingly. In addition, as shown in fig. 6, the second valve plate element 53 is disposed on a side of the second flexible sealing element 52 facing away from the pump-out side 12, where the second valve plate element 53 has a plurality of second elastic sheet bodies 531, and the number of the second elastic sheet bodies 531 is the same as that of the medium pump-out ports 121 and the second through holes 521 respectively, and is disposed in a unique corresponding manner, and each second elastic sheet body 531 is deflectable into the corresponding second through hole 521 respectively.

In practical application, when any of the medium pump outlets 121 compresses in the bag 21 that is only disposed correspondingly, as shown in fig. 1 and 5, the medium pump outlet 121 generates positive pressure and drives the second elastic sheet body 531 that is only disposed correspondingly to deflect toward the second through hole 521 that is only disposed correspondingly. And, when each second elastic piece body 531 deflects toward the inside of the second through hole 521 uniquely corresponding to the arrangement, each second elastic piece body 531 opens the medium pump outlet 121 uniquely corresponding to the arrangement. On the contrary, when any of the media pump outlets 121 stretches in the bag 21 that is only and correspondingly arranged, as shown in fig. 2 and 3, the media pump outlet 121 generates negative pressure and drives the second elastic piece body 531 that is only and correspondingly arranged to return to the original state, and when the second elastic piece body 531 returns to the original state, as shown in fig. 1, the second elastic piece body 531 can close the media pump outlet 121 that is only and correspondingly arranged again. Note that, the second flexible seal 52 and the second valve plate element 53 may be integrally formed, and of course, in some embodiments, the second flexible seal 52 and the second valve plate element 53 may be connected by a snap-fit connection, but in the present embodiment, the structures of the second flexible seal 52 and the second valve plate element 53 are not specifically limited.

In addition, in the present embodiment, as shown in fig. 1 and 7, an included angle is formed between the medium suction direction of the suction side 11 and the medium pumping direction of the pumping side 12 of the medium inlet and outlet bracket 1, and thus, in the present embodiment, the suction side 11 and the pumping side 12 are not on the same axis, so that the overall height of the diaphragm pump can be reduced. However, as a preferred solution, the direction of the suction side 11 of the medium and the direction of the pumping side 12 of the medium should be kept as perpendicular as possible, i.e. the directions of the suction side 11 and the pumping side 12 of the medium entering and exiting the bracket 1 are respectively consistent with the directions of the liquid inlet and the liquid outlet of the diaphragm pump, so that the capsule 21 can be arranged transversely, which can reduce the overall height of the diaphragm pump and simultaneously reduce the resistance of the liquid medium and the gas medium in flowing.

Furthermore, it should be noted that, in order to facilitate the installation of the first seal assembly 4 and the second seal assembly 5 on the medium inlet and outlet bracket 1, as shown in fig. 12, a first installation groove 113 for installing the first seal assembly 4 may be provided at the suction side 11, while, as shown in fig. 1, a second installation groove 123 for installing the second seal assembly 5 may be provided at the pump side 12, and foolproof structures may be provided between the first seal assembly 4 and the first installation groove, and between the second seal assembly 5 and the second installation groove 123. For example, taking the second sealing assembly 5 as shown in fig. 1, the fool-proof structure may include: the positioning protrusion 54 provided on the second flexible sealing member 52, the positioning groove 124 provided on the groove wall of the second mounting groove 123, and the positioning protrusion 54 may be formed by partially protruding the second flexible sealing member 52 of the second sealing assembly 5, so that when the second flexible sealing member 52 is placed in the positioning groove 124, the accuracy of the mounting position of the second sealing assembly 5 can be ensured by the cooperation of the positioning protrusion 54 and the positioning groove 124.

Furthermore, since in some embodiments, as shown in fig. 1, 3 and 5, the medium pump outlet 121 of the pump-out side 12 and the medium suction end 111 of the suction side 11 may each be provided with a plurality, at least one of the medium pump-out ends 121 may be used as an air outlet hole and at least one of the medium pump-out ends 121 may be used as an air outlet hole when applied. In addition, at least one medium suction end 111 is used as a suction hole corresponding to the air outlet hole and the liquid outlet hole, and at least one medium suction end 111 is used as a liquid suction hole, so that the diaphragm pump 1 can suck and pump out fluid medium and gas medium at the same time, thereby laying a foundation for the medium output equipment to pump out foam medium. Naturally, in practical application, each of the medium pump outlet 121 of the pump side 12 may be used as a liquid outlet, and each of the medium suction end 111 of the suction side 11 may be used as a liquid suction hole. Alternatively, each of the medium pump-out ends 121 of the pump-out side 12 may be used as an air outlet, and each of the medium suction ends 111 of the suction side 11 may be used as an air suction hole. In the present embodiment, the medium sucked and pumped by each medium suction port 111 and each medium pump outlet 121 is not particularly limited.

In addition, when at least one of the media pump outlets 121 is a liquid outlet, each time the diaphragm pump 1 completes pumping out the liquid media, a part of residual liquid media will necessarily remain between the second elastic sheet body 531 of the second valve sheet element 53 and the pump outlet side 12 of the media inlet and outlet bracket 1, and the part of liquid media will gradually solidify over time, so that a blocking phenomenon will occur between the second elastic sheet body 531 and the media inlet and outlet bracket 1, and once the blocking is likely to result, the second elastic sheet body 531 of the second valve sheet element 53 cannot open the media pump outlet 121 under positive pressure, thereby causing blocking of the media pump outlet 121. In order to prevent this, in some embodiments, when the medium pump outlet 121 is used as a drain hole, as shown in fig. 10, the drain hole includes: a liquid inlet side 1211 and a liquid outlet side 1212, and the liquid outlet side 1212 of the liquid outlet hole is configured to be opened or closed by the second elastic sheet body 531 of the second valve sheet element 53.

As shown in fig. 11, a portion of the liquid outlet side 1212 to the liquid inlet side 1211 of the liquid outlet hole expands in the radial direction of the liquid outlet hole 11, so that the liquid outlet hole forms a liquid inlet cavity 1213 connected to the liquid inlet side 1211 and a liquid outlet cavity 1214 connected to the liquid outlet side 1212, and in this embodiment, the inner diameter of the liquid outlet cavity 1214 is larger than the inner diameter of the liquid inlet cavity 1213. Through this kind of setting method, can also reduce the area of contact between second shell fragment body 531 and the pump out side 12 of medium business turn over support 1 when controlling the play liquid hole flow for second shell fragment body 531 when receiving the negative pressure, the most unable laminating with pump out side 12 of second shell fragment body 531, thereby can prevent effectively that second shell fragment body 531 and medium business turn over from appearing the phenomenon of adhesion between the support 1, reduced the possibility that the jam appears in the liquid hole.

Example two

A second embodiment of the present invention relates to a diaphragm pump, as shown in fig. 6, 7, 8 and 9, including: and a driving device 3, wherein the driving device 3 is connected with each bag body 21 of the medium extraction component, and the driving device 3 is used for driving each bag body 21 to simultaneously compress or simultaneously stretch.

In the present embodiment, in order to enable the driving device 3 to simultaneously stretch or compress each bladder 21, as shown in fig. 9 and 6, the driving device 3 includes: motor bracket 31, pull rod 32 and drive assembly 33. Wherein the motor bracket 31 includes: the first mounting plate 311 opposite to the medium inlet and outlet side 13, the second mounting plate 312 perpendicular to the first mounting plate 311, and a plurality of clamping holes 3111 are formed in the first mounting plate 311, meanwhile, as shown in fig. 6, the number of the clamping holes 3111 is the same as that of the capsules 21, and the capsules 21 are uniquely and correspondingly formed, and each capsule 21 has a portion that is respectively clamped into the uniquely and correspondingly formed clamping hole 3111.

As shown in fig. 6, the tie rod 32 is provided on the second mounting plate 312 and connected to each of the capsules 21, the tie rod 32 is provided on the second mounting plate 312, the tie rod 32 is slidable in the direction relative to the first mounting plate 311, and a driving unit 33 is connected to the tie rod 32, and the driving unit 33 is operable to drive the tie rod 32 to slide relative to the first mounting plate 311. In addition, in practical use, when the pull rod 32 slides in a direction approaching the first mounting plate 311, as shown in fig. 5, the pull rod 32 can simultaneously compress each of the capsules 21, and when the pull rod 32 slides in a direction separating from the first mounting plate 311, the pull rod 32 can simultaneously stretch each of the capsules 21.

In order to connect the tie bars 32 to the respective capsules 21, as shown in fig. 2 and 6, each of the capsules 21 has a portion protruding away from the opening 211 to form a connection portion 212. Meanwhile, the tie rod 32 is connected to the connection portion 212 of each of the capsules 21, for example, as shown in fig. 6, the tie rod 32 is provided with connection holes 323 corresponding to each of the capsules 21, and the number of the connection holes 323 is the same as and uniquely corresponds to the number of the capsules 21, and as shown in fig. 2 and 4, the connection portion 212 of each of the capsules 21 has a convex flange structure 213. During assembly, as shown in fig. 4 and 6, the connection portions 212 of each bag 21 can be respectively extruded into the corresponding connection holes 323, so that the flange structure 213 of each connection portion 212 can be clamped with the pull rod. Accordingly, when the tie rod 32 is moved in a directional manner with respect to the first mounting plate 311, the tie rod 32 can achieve compression or extension of each bladder 21. Millions of, the law,

in addition, as shown in fig. 6, it is worth mentioning that the driving assembly 33 includes: the motor 331, the eccentric 332 that is connected with the main shaft 3311 of motor 331, simultaneously still set up cavity 321 on the pull rod 32, the eccentric 332 sets up in cavity 321, simultaneously, this eccentric 332 still is connected with the main shaft of motor 331. In practice, as shown in fig. 6, the eccentric 332 may be driven to rotate by the motor 331, and the eccentric 332 may drive the pull rod 32 to slide reciprocally relative to the first mounting plate 311 during rotation. So that the tie rod 32 can draw or compress each of the capsules 21 by sliding on the second mounting plate 312 so that each of the capsules 21 can complete the suction and pumping of the liquid or gaseous medium. In addition, in order to fix the motor bracket 31 to the motor 331, as shown in fig. 6, the motor 331 is disposed on a side of the second mounting plate 312 away from the pull rod 32, and at the same time, the second mounting plate 312 is provided with a shaft hole 3121 through which a main shaft of the motor 331 can pass, and the main shaft of the motor 331 can smoothly pass through the shaft hole 3121 and be connected with the eccentric wheel 332.

Further, in some embodiments, as shown in fig. 7, the driving assembly 33 further includes: the bearing 333, wherein the bearing 333 is disposed in the cavity 321 of the pull rod 32, and an inner ring body of the bearing 333 is connected with the eccentric wheel 332, and an outer ring body of the bearing 333 is connected with the pull rod 32, so that when the motor 331 is driving the eccentric wheel 332 to rotate around the axis of the main shaft 3311, as shown in fig. 10, by means of the characteristic that the inner ring body and the outer ring body of the bearing 333 rotate relatively to each other, the rotation of the eccentric wheel 332 is not affected, and meanwhile, the eccentric wheel 332 can be prevented from directly striking the pull rod 32 during rotation, so that the friction force between the eccentric wheel 332 and the pull rod 32 can be reduced, and the noise generated by the driving assembly 33 during operation is reduced, so that the diaphragm pump 1 has better silence during operation.

Moreover, since the pull rod 32 can move relative to the first mounting plate 311 by means of the driving force of the eccentric wheel 332 during rotation, when the pull rod 32 compresses or stretches each of the capsules 21, the pull rod 32 swings left and right to a greater extent, when the medium pumping component 11 includes a plurality of capsules 21, the capsules 21 are unevenly acted by the pull rod 32, so that the compression or stretching of each of the capsules 21 is different, in order to ensure that the compression or stretching of each of the capsules 21 can be completely synchronous, the acting forces received by each of the capsules 21 are completely consistent when the pull rod 32 moves relative to the first mounting plate 311, in some embodiments, the pull rod 32 is also slidingly connected with the second mounting plate 312 along the direction relative to the first mounting plate 311, and in order to realize the sliding connection of the two, for example, as shown in fig. 8 and 9, the second mounting plate 312 is provided with a limit slot 3121, and the limit slot 3121 can extend in the direction perpendicular to the first mounting plate 311, and the pull rod 32 is provided with a limit slot 3121 which can be embedded in the limit slot 322, and the limit slot 322 can slide along the limit slot 322 in the limit slot 322 direction. Therefore, it is easy to see that when the pull rod 32 moves relative to the first mounting plate 311, the pull rod 32 can be guided and limited by the sliding fit of the limiting protrusion 322 and the limiting groove 3121, so that the pull rod 32 is prevented from swinging greatly in the moving process, the synchronism of each bag body 21 in compression or stretching is ensured, and the phenomenon of gas-liquid asynchronism generated in medium output is avoided.

Example III

A third embodiment of the present invention relates to a foaming mechanism, as shown in fig. 14, comprising: a diaphragm pump, mixing chamber 6 according to the second embodiment. Further, as shown in fig. 13 and 15, the mixing chamber 6 has an inlet side 61 including a plurality of medium inlet ends 611 and a medium outlet side 62 disposed away from the inlet side 61. Wherein the inlet side 61 is detachably connected to the pump-out side 12 of the diaphragm pump, and the number of medium inlet ends 611 and the number of medium pump-out ends 62 are the same and are uniquely arranged, and each medium inlet end 611 is respectively communicated with the uniquely arranged medium pump-out end 62.

In practice, the mixing chamber 6 is arranged to receive the multiple medium pumped from the pump-out side 12 of the diaphragm pump via the inlet side 61 and to mix the multiple medium, while the mixing chamber 6 is also arranged to pump the mixed medium from the medium outlet side 62.

Specifically, in the present embodiment, as shown in fig. 13 and 15, the mixing chamber 6 includes: a mixing chamber body 63, an upper seal 64 and a lower seal 65. As shown in fig. 15, the top side of the mixing chamber body 63 has an upper opening 631, while the bottom side of the mixing chamber body 63 has a lower opening 632, and at the same time, the upper sealing member 64 is disposed on the top side of the mixing chamber body 63, the upper opening 631 can be directly closed by the upper sealing member 64, and the lower sealing member 65 is disposed on the bottom side of the mixing chamber body 63. In addition, it should be noted that, in some embodiments, the upper sealing member 64 and the lower sealing member 65 may be thin film sealing members, and are respectively connected with the mixing chamber body 63 through a scalding process, that is, the upper sealing member 64 and the lower sealing member 65 are respectively connected with the mixing chamber body 63 through a scalding process, and the connection positions of the upper sealing member 64 and the lower sealing member 65 and the mixing chamber body 63 can not be gaps while the connection between the upper sealing member 64 and the lower sealing member 65 and the mixing chamber body 63 is realized through the scalding process, so that the sealing performance of the mixing chamber 6 is ensured, and the leakage phenomenon is avoided.

As shown in fig. 10 and 12, the foaming mechanism of the present embodiment further includes: the nozzle 9, and the nozzle 9 is detachably connected to the medium discharge side 62 of the mixing chamber 63 and forms a seal with the medium discharge side 62. Thereby ensuring that the various media will not leak out of the junction of the nozzle 9 and the media discharge side 62 as they are discharged to the nozzle 9.

Specifically, as shown in fig. 13, a mounting hole 68 is provided in the medium discharge side 62, and, as shown in fig. 10, the mounting hole 68 is partially inserted by the nozzle 9, achieving an interference fit. In some embodiments, as shown in fig. 13, the mounting hole 68 is a circular hole, and as shown in fig. 13, a part of the nozzle 9 inserted into the mounting hole 68 is correspondingly provided in a shape matching with the mounting hole 68, and when the nozzle 9 is inserted into the mounting hole 68, an interference fit is adopted between the inserted part of the nozzle 9 and the mounting hole 68, so that after the part of the nozzle 9 is inserted into the mounting hole 68, the outer surface of the nozzle 9 and the medium mixing assembly 2 can be mutually adhered tightly, sealing is realized, and thus, the defect of liquid leakage is effectively avoided. In addition, the mounting hole 68 in the present embodiment is described by taking a circular hole as an example, but in practical application, the mounting hole 68 may take other shapes, and in the present embodiment, the shape of the mounting hole 68 is not particularly limited.

In other embodiments, as shown in fig. 13, the medium discharging side 62 is further provided with a convex connecting portion 621, and the mounting hole 68 may extend to the connecting portion 621. In actual use, as shown in fig. 10, the nozzle 9 can be tightly connected to the connection portion 621 by interference fit with the mounting hole 68, so that the sealing performance of the connection portion of the nozzle 9 and the medium discharge side 62 can be ensured as well.

Also, in some embodiments, as shown in fig. 13, the medium discharge side 62 is further provided with a seal chamber 67, and the seal chamber 67 is used to surround the mounting hole 68. Specifically, in order to form the seal chamber 67 on the medium discharge side 62, as shown in fig. 13, a housing 69 with the seal chamber 67 may be provided on the medium discharge side 62, and the mounting hole 68 may be directly enclosed or the connection portion 621 provided with the mounting hole 68 may be enclosed by the housing 69, and when a part of the nozzle 9 is inserted into the mounting hole 68, the glue may be dispensed into the housing 69 until the whole seal chamber 67 is completely filled with the glue, thereby completely sealing the connection portion between the nozzle 9 and the medium discharge side 62 and ensuring the sealing performance of the connection portion between the nozzle 9 and the medium discharge side 62.

In addition, in the present embodiment, since at least one medium suction end 111 can be used to suck a liquid medium, at least one medium suction end 111 can be used to suck a gaseous medium. So that after the liquid medium and the gaseous medium pumped out from the pump-out side 12 of the diaphragm pump are in the mixing chamber 6, the gaseous medium and the liquid medium can be mixed by the mixing chamber 6 and foam is generated, so that the foaming mechanism in the embodiment can be applied to the liquid outlet device of the hand washing machine.

In addition, as shown in fig. 14 and 16, the foaming mechanism of the present embodiment preferably further includes: the pump bottom cover 7, and, as shown in conjunction with fig. 16, the pump bottom cover 7 includes, in a preset axis direction: a bottom cover body 71, and a medium suction member 72 provided in the bottom cover body 71. Wherein the bottom cover body 71 has a first mounting side 713 detachably connected to the medium inlet and outlet bracket 1 in a preset axis direction, a second mounting side 714 for detachably connecting to the liquid storage container 8, and the first mounting side 713 and the second mounting side 714 are disposed opposite to each other in the preset axis direction. In actual use, as shown in fig. 14 and 16, at least one medium suction end 111 of the medium inlet/outlet holder 1 is used to suck the liquid medium in the liquid storage container 8 through the medium suction member 72 when the respective capsules 21 are simultaneously stretched.

Specifically, in the present embodiment, as shown in fig. 14 and 16, the bottom cover body 71 includes: the inner cover body 711 and the outer cover body 712, and the inner cover body 711 and the outer cover body 712 are coaxially disposed along a preset axis direction, and the suction member 72 is disposed at the inner cover body 711 along the preset axis direction. Wherein, as shown in connection with fig. 14, the inner cover 711 is detachably connected to the medium inlet and outlet bracket 1, and the outer cover 712 is detachably connected to the liquid storage container 8. Therefore, the butt joint of the liquid storage container 8 and the diaphragm pump can be effectively realized by arranging the bottom cover 7 of the pump, so that the whole foaming device has a compact structure and small volume and size.

In addition, as shown in fig. 16 and 17, the inner lid body 711 includes: a top plate 7111 and an inner wall 7112. Wherein the top plate 7111 is provided with the suction member 72 in a preset axis direction. At the same time, the inner wall 7112 is disposed circumferentially around the top plate 7111, and the inner wall 7112 encloses a clamping region 7113 on the top plate for clamping the liquid storage container 8. In the present embodiment, as shown in fig. 17, the outer cover 712 includes: an outer wall 7121 and a bottom plate 7122, wherein the outer wall 7121 is disposed opposite to the inner wall 7112 about a preset axis direction, and the bottom plate 7122 is connected to the outer wall 7121 and the inner wall 7112, and, as shown in connection with fig. 16 and 17, a connection member 73 for connecting a medium to enter and exit the bracket 1 is further disposed on the bottom plate 7122. For example, the connection 73 may be a threaded stud, by means of which a connection to the medium inlet and outlet carrier 1 can be achieved. Of course, other components may be used for the connecting member 73 in practical use, and the structure of the connecting member 73 is not particularly limited in practical use.

As shown in fig. 16 and 17, the side of the outer wall 7121 away from the inner wall 7112 is used to lock the liquid reservoir 8 connected to the inner lid body 711 into the head of the liquid pumping apparatus. Specifically, as shown in fig. 17, a side of the outer wall 7121 away from the inner wall 7112 forms a plurality of first annular convex portions 7123 in a preset axis direction. Each of the first annular protruding portions 7123 has a first lower engagement surface 71231 and a first upper engagement surface 71232 facing the first lower engagement surface 7123 in the predetermined axial direction, and the first upper engagement surface 71232 is formed to extend obliquely in the direction of the bottom plate 7122 from one side to the other side connected to the outer wall 7121 at least in part. As can be seen from the above, the liquid storage container 8 can be effectively clamped into the head of the liquid pumping device by the plurality of first annular protruding portions 7123 on the outer wall 7121, so that even if a leakage phenomenon occurs, the liquid medium can be prevented from dripping onto other components of the device, and corrosion and damage to other components can be avoided. Meanwhile, through the first annular protruding part 7123, the sealing performance between the outer wall 7121 of the outer cover 712 and the machine head can be improved after the liquid storage container is clamped into the machine head.

In order to suck the liquid medium and the gas medium by the medium suction member 72 when the respective cells 21 are simultaneously stretched, the medium suction member 72 includes, as shown in fig. 16 and 17: a first upper suction passage 721, a second upper suction passage 722, and a first lower suction passage 723. Wherein the first upper suction passage 721 and the second upper suction passage 722 are respectively formed by a portion of the upper surface of the top plate 7111 protruding in a direction away from the bottom plate 7122, and the first lower suction passage 723 is formed by a portion of the lower surface of the top plate 7111 protruding in a direction toward the bottom plate 7122 and communicates with the first upper suction passage 721.

During assembly, as shown in fig. 17, the first lower suction channel 723 may be used to interface with the liquid outlet end 81 of the liquid reservoir 8, while the first upper suction channel 721 interfaces with one of the medium suction ends 111 such that the first upper suction channel 721 may draw liquid medium within the liquid reservoir 8 through the first lower suction channel 723. In addition, the second upper suction passage 722 may be butted with another medium suction end 111 thereof, and the second upper suction passage 722 may further have a suction port (not shown) exposed to the lower surface of the top plate 7111, the second upper suction passage 722 being for sucking the gaseous medium through the suction port.

Further, in order to achieve the butt joint of the first lower suction channel 723 with the liquid outlet end 81 of the liquid reservoir 8, as shown in fig. 17, the first lower suction channel 723 is partially inserted directly into the liquid outlet end 81 of the liquid reservoir 8, while, as shown in fig. 17, the outer surface of the first lower suction channel 723 forms a second annular projection 7231. The second annular projection 7231 has a second lower engagement surface 72311 and a second upper engagement surface 72312 facing the second lower engagement surface 72311 in the predetermined axial direction, and the second upper engagement surface 72312 is formed by extending obliquely away from the top plate 7111 from at least a portion of the side connected to the outer surface of the first lower suction passage 723. It can be seen from this that, by the second annular projection 7231, the sealing performance between the first lower suction channel 723 and the liquid outlet end 81 can be improved when the first lower suction channel 723 is inserted into the liquid outlet end 81 of the liquid storage container 8.

Example IV

A fourth embodiment of the present invention relates to a hand washer, as shown in fig. 17, comprising: the foaming mechanism and the liquid reservoir 8 according to the third embodiment. Wherein at least one medium suction end 11 is used for sucking the liquid medium in the liquid storage container 8.

In addition, in the present embodiment, since the suction direction of the medium on the suction side 11 and the pumping direction of the medium on the pumping side 12 of the diaphragm pump in the foaming mechanism used in the present embodiment are perpendicular to each other, when the liquid storage container 8 and the foaming mechanism are installed, the axial direction of the liquid storage container 8 and the suction direction of the medium on the suction side 11 can be kept consistent, that is, the axial direction of the whole liquid storage container 8 is perpendicular to the pumping direction of the medium on the pumping side 12, so that the whole liquid storage container 8 is vertically placed, and each bag 21 is horizontally placed, therefore, the height and the volume of the whole hand washer head can be greatly reduced, the height can be reduced from 98mm to 52mm originally, and the height can be reduced by nearly one half, so that the whole hand washer has a more compact structure. Meanwhile, by means of medium entering and exiting the bracket 1, the suction and pumping of the gas or liquid medium can be realized at the same time, so that the parts of the hand cleaner head can be greatly reduced, the diameter size of the head can be reduced from 72mm to 65mm, and the structure of the whole hand cleaner head is more compact. In addition, the liquid storage container 8 and the diaphragm pump are in butt joint through the machine pump bottom cover 7, so that the whole foaming device is compact in structure, and the size and the volume of the whole machine are further reduced.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments in which the invention is practiced and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. The capsule mechanism is applied to the diaphragm pump and is characterized in that the pumping direction of a medium of the capsule mechanism is perpendicular to the sucking direction of the medium and is the same as the liquid outlet direction of the diaphragm pump.

2. The capsule mechanism of claim 1, wherein the capsule mechanism comprises:

3. The capsule apparatus of claim 2, wherein the medium inlet direction to the suction side and the medium outlet direction from the pump-out side of the stent form an angle therebetween.

4. The capsule mechanism of claim 2, wherein the medium access stent further has: the medium inlet and outlet sides are formed by a plurality of medium inlet and outlet ends, the number of the medium inlet and outlet ends is the same as that of the medium suction end, the medium pump outlet and the capsule body, and the medium inlet and outlet ends are arranged in a unique corresponding mode;

wherein, each medium inlet and outlet end is respectively communicated with the medium suction end and the medium pump outlet which are respectively and correspondingly arranged; each bag body is provided with an opening capable of leading in and out liquid or gas medium, and the opening of each bag body is respectively communicated with the medium inlet and outlet end which is arranged uniquely and correspondingly.

5. The capsule mechanism of claim 4, wherein the media extraction component further comprises:

the flexible component is arranged on the medium inlet and outlet bracket; the flexible member has a first sealing side conforming to the media access side, a second sealing side opposite the first sealing side;

wherein each of the capsules is formed by extruding a part of the flexible part from the first sealing side to the second sealing side in a direction away from the medium inlet and outlet side, and the first sealing side is further formed with the opening of each capsule after extrusion.

6. The capsule mechanism of claim 4, further comprising:

a first seal assembly disposed on a suction side of the media access support;

the first sealing component is used for opening the medium suction ends when the capsules are simultaneously stretched; the first sealing assembly is also used for simultaneously compressing each bag body and closing each medium suction end.

7. The capsule mechanism of claim 6, wherein the first seal assembly comprises:

a first flexible seal member disposed on the suction side and having a plurality of first through holes; the number of the first through holes is the same as that of the medium suction ends, and the first through holes are arranged in a unique corresponding mode;

The first valve plate element is arranged on one side of the first flexible sealing element, which is away from the suction side; the first valve plate element is provided with a plurality of first elastic plate bodies, the number of the first elastic plate bodies is the same as that of the medium suction end and the first through holes respectively, the first elastic plate bodies are arranged in a unique corresponding mode, and each first elastic plate body can deflect towards the corresponding first through hole respectively;

each first elastic piece body is used for closing the medium suction end which is uniquely and correspondingly arranged when being positioned at the initial position, and is also used for opening the medium suction end which is uniquely and correspondingly arranged when being deflected towards the first through hole which is uniquely and correspondingly arranged;

when the bag body which is arranged uniquely and correspondingly is stretched, the medium suction end generates negative pressure and drives the uniquely and correspondingly arranged first elastic piece body to deflect towards the uniquely and correspondingly arranged first through hole;

and any medium suction end is used for generating positive pressure and driving the first elastic sheet body which is uniquely and correspondingly arranged to return when the bag body which is uniquely and correspondingly arranged is compressed.

8. The capsule mechanism of claim 7, wherein the first flexible seal is snap-fit with the first valve plate member.

9. The capsule mechanism of claim 4, further comprising:

the second sealing component is arranged on the suction side of the medium inlet and outlet bracket;

the second sealing component is used for closing the outlet of each medium pump when each bag body stretches simultaneously; the second sealing assembly is also used for simultaneously compressing each capsule body and opening each medium pump outlet.

10. The capsule mechanism of claim 9, wherein the second seal assembly comprises:

a second flexible seal disposed on the pump-out side and having a plurality of second through holes; the number of the second through holes is the same as that of the medium pump outlets, and the second through holes are arranged in a unique corresponding mode;

a second valve sheet member provided at a side of the second flexible seal member toward the pump-out side; the second valve plate element is provided with a plurality of second elastic plate bodies, the number of the second elastic plate bodies is the same as that of the medium pump outlet and the second through holes respectively, the second elastic plate elements are arranged in a unique corresponding mode, and each second elastic plate body can deflect towards the corresponding second through hole respectively;

each second elastic piece body is used for closing the only corresponding arranged medium pump outlet when being positioned at the initial position, and is also used for opening the only corresponding arranged medium pump outlet when deflecting towards the inside of the second through hole;

The medium pump outlet is used for generating positive pressure and driving the second elastic sheet body which is arranged in a unique corresponding way to deflect towards the second through hole which is arranged in the unique corresponding way when the bag body which is arranged in the unique corresponding way is compressed;

and any medium pump outlet is used for generating negative pressure and driving the second elastic sheet body which is uniquely and correspondingly arranged when the bag body is stretched.

11. The capsule apparatus of any of claims 2-10, wherein at least one of the media pump outlets is a liquid outlet and at least one of the media suction outlets is a liquid suction aperture corresponding to the liquid outlet;

at least one of the medium pump outlets is an air outlet, and at least one of the medium suction ends is an air inlet corresponding to the air outlet.

12. The capsule apparatus of claim 11, wherein the exit port has an entry side, an exit side opposite the entry side;

the liquid outlet side is partially expanded along the radial direction of the liquid outlet hole, so that the liquid outlet hole forms a liquid inlet cavity connected with the liquid inlet side and a liquid outlet cavity connected with the liquid outlet side, and the inner diameter of the liquid inlet cavity is smaller than that of the liquid outlet cavity.

13. A diaphragm pump, comprising:

the capsule mechanism as in any one of claims 2-12;

14. A diaphragm pump according to claim 13, wherein the drive means comprises:

a motor bracket; the motor bracket includes: a first mounting plate arranged opposite to the medium inlet and outlet side and a second mounting plate perpendicular to the first mounting plate; the first mounting plate is provided with a plurality of clamping holes, the number of the clamping holes is the same as that of the capsules, the capsules are arranged in a unique corresponding mode, and parts of the capsules are respectively clamped into the clamping holes arranged in the unique corresponding mode;

the pull rods are arranged on the second mounting plate and connected with the bag bodies; the pull rod is slidable relative to the direction of the first mounting plate; wherein the pull rod is used for simultaneously compressing each bag body when sliding towards the direction approaching to the first mounting plate; the pull rod is also used for simultaneously stretching each bag body when sliding in a direction away from the first mounting plate;

And the driving assembly is connected with the pull rod and used for driving the pull rod to slide relative to the first mounting plate.

15. The diaphragm pump of claim 14 wherein the drive assembly comprises: the eccentric wheel is connected with the main shaft of the motor; wherein the pull rod is further provided with a cavity capable of accommodating the eccentric wheel;

the motor is used for driving the eccentric wheel to rotate, and the eccentric wheel is used for driving the pull rod to slide back and forth relative to the first mounting plate when rotating.

16. The diaphragm pump of claim 15 wherein the drive assembly further comprises: the bearing is arranged in the cavity of the connecting sleeve, the inner ring body of the bearing is connected with the eccentric wheel, and the outer ring body of the bearing is connected with the pull rod.

17. The diaphragm pump of claim 15, wherein the pull rod is further slidably connected to the second mounting plate along a direction opposite to the first mounting plate, the second mounting plate is provided with a limiting groove, the limiting groove is formed by extending in a direction perpendicular to the first mounting plate, a limiting protrusion capable of being embedded in the limiting groove is disposed on one side of the pull rod opposite to the second mounting plate, and the limiting protrusion is slidable along a length direction of the limiting groove.

18. The diaphragm pump of claim 15 wherein the motor is disposed on a side of a second mounting plate facing away from the tie rod, the second mounting plate being disposed with an axial bore through which the spindle of the motor passes.

19. A foaming mechanism comprising:

a diaphragm pump according to any one of claims 13 to 18;

20. The foaming mechanism of claim 19 further comprising:

and the nozzle is detachably connected with the medium discharge side of the mixing bin and forms a seal with the medium discharge side.

21. The foaming mechanism of claim 20, wherein the medium discharging side is provided with a mounting hole into which the nozzle portion is inserted, or wherein the medium discharging side is provided with a convex connecting portion provided with a mounting hole into which the nozzle portion is inserted; the mounting hole is in interference fit with the nozzle;

the medium discharge side is further provided with a seal chamber for surrounding the mounting hole.

22. A hand washer, comprising: a foaming mechanism, reservoir as claimed in any one of claims 19 to 21; wherein, at least one medium suction end is used for sucking the liquid medium in the liquid storage container;

the axial direction of the liquid storage container is perpendicular to the suction direction of the medium suction side.