Bladder chamber mechanism, diaphragm pump, foaming device and washing machine

Abstract

The embodiment of the present application relates to a kind of bathroom disinfection device, especially designed a kind of capsule cavity mechanism, diaphragm pump, foaming device and hand washing machine, capsule cavity mechanism, the medium pumping direction of this capsule cavity mechanism is perpendicular to medium suction direction, and same with the liquid outlet direction of diaphragm pump.Therefore, when applying, the liquid outlet direction of diaphragm pump can be set with transverse, and liquid storage container is placed vertically, and the height of diaphragm pump is reduced by about one half, so that the overall height and volume of diaphragm pump can be greatly reduced, so that the volume of diaphragm pump is smaller, so that when diaphragm pump is applied to hand washing machine and other medium output equipment, the structure of medium output equipment is more and more, and the placement of medium output equipment is facilitated.Compared with prior art, simultaneously, each capsule is used to be connected with driving device, and simultaneously compressed or simultaneously stretched under the driving force of driving device, compared with prior art, the liquid outlet nozzle or liquid outlet end of foaming mechanism can effectively avoid liquid hanging phenomenon.

Description

Technical Field

[0001] The embodiments of the present invention relate to a bathroom disinfection device, specifically designed with a bladder mechanism, a diaphragm pump, a foaming device, and a hand sanitizer. Background Technology

[0002] Hand sanitizer and shower gel are common washing and hygiene products used in daily life, usually placed in kitchens, bathrooms, and other similar locations. They are generally stored in containers, and the liquid is dispensed by pressing a pump located on the top of the container. When using them, the dispensed liquid is typically applied to the area to be washed.

[0003] Although there are some pumping or foaming devices that can produce foam in liquid media when pumping out liquid media, the inventors found that these pumping and foaming devices are generally large in size and require a large area to place. For kitchens and bathrooms, which are already small spaces, this makes the use of the space in the kitchen and bathroom even more cramped.

[0004] Furthermore, the inventors discovered that existing foaming devices often exhibit liquid residue buildup at the outlet or end after pumping out the liquid medium. This is because current foaming devices utilize diaphragm pumps to draw in and pump out gas and liquid media. During operation, the diaphragm pump generates a time difference between the intake and discharge of the gas and liquid media. Consequently, after the foaming device pumps out the liquid medium, one chamber of the diaphragm pump remains under positive pressure. This results in unpumped liquid medium overflowing from the outlet or end under positive pressure, causing liquid residue buildup. This not only affects the user experience but also causes the overflowing liquid medium to directly contact the external environment, leading to contamination of the outlet or end.

[0005] Finally, the inventors also discovered that current foaming devices may leak liquid during the pumping process, and the leaked liquid may drip onto other components of the equipment, causing corrosion to those components. Summary of the Invention

[0006] The purpose of this invention is to design a bladder mechanism, a diaphragm pump, a foaming device, and a hand sanitizer, which not only has a compact structure and small size, but also avoids liquid residue at the outlet or outlet end after the liquid medium is pumped out.

[0007] To achieve the above objectives, embodiments of the present invention provide a cavity mechanism applied to a diaphragm pump, wherein the pumping direction of the cavity mechanism is perpendicular to the pumping direction and the same as the liquid discharge direction of the diaphragm pump.

[0008] Additionally, the cavity mechanism includes: The media inlet / outlet support has an inlet side consisting of a plurality of media inlet ends and an outlet side consisting of a plurality of media outlet ends; wherein the number of media inlet ends and media outlet ends are the same and they are uniquely corresponding. A media extraction component is disposed on the media inlet / outlet support and includes a plurality of bladders; wherein the number of the bladders is the same as the number of the media suction end and the media pump outlet end, and is uniquely and correspondingly disposed. Each of the aforementioned capsules is also used to connect to a drive device of a diaphragm pump, and to be simultaneously stretched or simultaneously compressed under the drive of the drive device; When each of the capsules is stretched simultaneously, each capsule is used to simultaneously draw in liquid or gaseous media through the uniquely corresponding medium suction end; when each of the capsules is compressed simultaneously, each capsule is used to simultaneously pump out the drawn-in liquid or gaseous media through the uniquely corresponding medium discharge end.

[0009] In addition, embodiments of the present invention also provide a diaphragm pump, including: the cavity mechanism described above; A driving device, connected to each of the capsules of the medium extraction component, is used to drive each of the capsules to compress or stretch simultaneously.

[0010] In addition, embodiments of the present invention also provide a foaming mechanism, comprising: The diaphragm pump as described above; A mixing chamber has an inlet side consisting of several media inlet ends and a media outlet side disposed away from the inlet side; wherein the inlet side and the outlet side are detachably connected, the number of media inlet ends and the number of media outlet ends are the same and are uniquely corresponding, and each media inlet end is connected to the uniquely corresponding media outlet end. The mixing chamber is used to receive multiple media pumped from the pumping-out side of the diaphragm pump through the inlet side, and to mix the multiple media. The mixing chamber is also used to pump the mixed media out from the media discharge side.

[0011] In addition, embodiments of the present invention also provide a hand sanitizer, comprising: a foaming mechanism and a liquid storage container as described above; wherein at least one of the media suction ends is used to draw liquid media from the liquid storage container; The axial direction of the liquid storage container is perpendicular to the pumping direction of the medium on the pumping side.

[0012] Compared to the prior art, the embodiments of the present invention, because the media pumping direction of the bladder mechanism is perpendicular to the media suction direction and the same as the liquid discharge direction of the diaphragm pump, allow the diaphragm pump to be set laterally while the storage container is set vertically. This significantly reduces the overall height of the diaphragm pump, making it smaller in size. Consequently, when the diaphragm pump is used in media dispensing devices such as hand sanitizer dispensers, the structure of the media dispensing device becomes more compact, facilitating its placement. Furthermore, because the diaphragm pump's drive device can simultaneously compress or stretch each bladder of the media pumping component, the diaphragm pump does not generate negative pressure during liquid dispensing, effectively preventing liquid residue from clinging to the nozzles of the media dispensing device. Attached Figure Description

[0013] Figure 1 This is an exploded view of the medium inlet / outlet support and the first sealing assembly and the second sealing assembly, respectively, in some embodiments of the present invention; Figure 2 This is an exploded view of the medium inlet / outlet support and the medium extraction component in some embodiments of the present invention; Figure 3 This is a schematic diagram of the internal structure of the cavity mechanism in some embodiments of the present invention; Figure 4 for Figure 3 Sectional view at point BB; Figure 5 for Figure 4 Sectional view at point DD; Figure 6 This is an exploded view of the medium inlet / outlet support, medium extraction component, and drive device in some embodiments of the present invention. Figure 7 This is an exploded view of another medium entry / exit support, medium extraction component, and driving device in one embodiment of the present invention; Figure 8 This is an exploded view of the bladder swing arm and the fixing bracket in some embodiments of the present invention; Figure 9 This is a top view of the assembled pleural arm and the fixed bracket in one of the embodiments of the present invention; Figure 10 This is a schematic diagram of the assembly of a diaphragm pump in some embodiments of the present invention; Figure 11 This is a schematic diagram of the structure when the outlet of the medium pump is a liquid outlet hole in some embodiments of the present invention; Figure 12 This is a side view of the bottom of the foaming mechanism in some embodiments of the present invention; Figure 13This is a side view of the top of the foaming mechanism in one embodiment of the present invention; Figure 14 This is a schematic diagram of the assembly of the foaming mechanism and the bottom cover body in some embodiments of the present invention; Figure 15 This is an exploded view of the mixing chamber in one of the embodiments of the present invention; Figure 16 This is an exploded view of the pump bottom cover and the liquid storage container in some embodiments of the present invention; Figure 17 This is a schematic diagram of the assembly of the hand sanitizer in some embodiments of the present invention; Detailed Implementation To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of the present invention to facilitate a better understanding of this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0014] Example 1 The first embodiment of the present invention relates to a cavity mechanism, such as Figures 3 to 6 As shown, this cavity mechanism is applied to a diaphragm pump, and, combined with, as Figure 1 and Figure 2 As shown, the pumping direction of the bladder mechanism is perpendicular to the pumping direction and the same as the liquid discharge direction of the diaphragm pump. Therefore, in application, the liquid discharge direction of the diaphragm pump can be set horizontally, while the storage container is placed vertically. This reduces the height of the diaphragm pump from 98mm to 52mm, a reduction of nearly half, significantly reducing the overall height and volume of the diaphragm pump. This makes the diaphragm pump 1 smaller, thus enabling its application in media output devices such as hand sanitizer dispensers. Figure 6 As shown, this makes the structure of the media output device more compact and facilitates its placement.

[0015] Specifically, in this embodiment, such as Figure 2 As shown, the cavity mechanism includes: a media inlet / outlet support 1 and a media extraction component 2. Among them, combined with... Figure 1 As shown, the medium inlet / outlet support 1 has an inlet side 11 composed of a plurality of medium inlet ends 111 and an outlet side 12 composed of a plurality of medium outlet ends 121. Furthermore, the number of medium inlet ends 111 and medium outlet ends 121 are the same and they are uniquely and correspondingly arranged.

[0016] Secondly, such as Figure 2As shown, the medium extraction component 2 is disposed on the medium inlet / outlet bracket 1, and the medium extraction component 2 includes a plurality of capsules 21. Furthermore, the number of capsules 21 is the same as the number of medium suction end 111 and medium pump outlet end 121, and they are uniquely and correspondingly disposed.

[0017] In practical applications, combined with Figure 4 , Figure 5 and Figure 6 As shown, each capsule 21 is also used to connect to the drive device 3 of the diaphragm pump, and to be simultaneously stretched or compressed under the drive of the drive device 3. Furthermore, when each capsule 21 is stretched simultaneously, as... Figure 4 As shown, each capsule 21 can be used to simultaneously draw in liquid or gaseous media through a uniquely corresponding media suction end 111. When each capsule 21 is compressed simultaneously, as... Figure 5 As shown, each capsule 21 can be used to pump out the absorbed liquid or gas medium simultaneously through a uniquely corresponding medium pumping end 121.

[0018] It is not difficult to see that since each capsule 21 can be compressed and stretched simultaneously under the drive of the drive device 3, when the capsule mechanism completes the pumping, since each capsule 21 is in a compressed state at this time, positive pressure will not be generated in the foaming mechanism, thus effectively avoiding the phenomenon of liquid hanging on the nozzle 3 of the foaming mechanism.

[0019] Specifically, in this embodiment, combined with Figure 2 As shown, the medium inlet / outlet support 1 also has a medium inlet / outlet side 13 composed of a plurality of medium inlet / outlet ends 131, and the number of medium inlet / outlet ends 131 is the same as the number of medium suction ends 111, medium pumping ends 121 and bladder 21, and is uniquely and correspondingly set.

[0020] Each medium inlet / outlet end 131 is connected to a uniquely corresponding medium suction end 111 and medium pump outlet end 121, respectively. Simultaneously, in conjunction with… Figure 6 As shown, each capsule 21 has an opening 211 for the entry and exit of liquid or gaseous media, and each capsule 21's opening 211 is connected to a uniquely corresponding media inlet / outlet end 131. Through the media inlet / outlet end 131, each capsule 21 can draw in and pump out liquid or gaseous media when stretched or compressed. Furthermore, it should be noted that in this embodiment, as... Figure 2 As shown, the medium inlet / outlet end 131 is composed of a medium inlet hole 1311 and a medium outlet hole 1312. Through the medium inlet hole 1311, the medium can flow through the bladder 21 during stretching, such as... Figure 3 and Figure 4 As shown, a negative pressure is generated at the medium suction end 111 to complete the suction of liquid or gas medium, while the medium discharge hole 1312 can be used to discharge the medium when the capsule 21 is compressed. Figure 5 As shown, positive pressure can be provided to the medium outlet 121 to complete the pumping out of liquid or gas medium.

[0021] In addition, in order to ensure the sealing performance of each bladder 21 when drawing in and pumping out the medium, such as Figure 2 As shown, the media extraction component 2 further includes a flexible component 22, which is disposed on the media inlet / outlet support 1 and, in conjunction with... Figure 1 As shown, the flexible component 22 has a first sealing side 221 that fits against the medium inlet / outlet side 13 and a second sealing side 222 opposite to the first sealing side 221. Furthermore, each capsule 21 is formed by the flexible component 22 from the first sealing side 221 to the second sealing side 222, with a portion extruded away from the medium inlet / outlet side 13. After extrusion, the first sealing side 221 also forms an opening 211 for each capsule 21. It is evident that because each capsule 21 is integrally extruded from the flexible component 22 from the first sealing side 221 to the second sealing side 22, the entire flexible component 22 and each capsule 21 are integrated. Moreover, each capsule 21 can achieve surface contact with the medium inlet / outlet side 13 via the first sealing side 221 of the flexible component 22. This improves the sealing performance of each capsule 21 when drawing in or pumping out liquid or gaseous media, preventing leakage.

[0022] Furthermore, it is worth noting that, such as Figure 1 As shown, the bladder mechanism of this embodiment further includes: a first sealing assembly 4 and a second sealing assembly 5. The first sealing assembly 4 is disposed on the suction side 11 of the medium inlet / outlet support 1, and, when each bladder 21 is simultaneously stretched, it combines with... Figure 3 and Figure 4 As shown, the first sealing assembly 4 can open each medium suction end 111, and when each bladder 21 is compressed at the same time, the first sealing assembly 4 can close each medium suction end 111.

[0023] Furthermore, in order to enable the first sealing assembly 4 to open or close each medium suction end 111 under the stretched and compressed state of each bladder 21, each first valve plate assembly 4 can adopt the following structure, such as... Figure 1 As shown, the first sealing assembly 4 includes: a first flexible seal 42 and a first valve element 43. The first flexible seal 42 is disposed on the suction side 11 and has a plurality of first through holes 421. The number of first through holes 421 is the same as the number of media suction ends 111, and they are uniquely and correspondingly arranged. Additionally, as... Figure 1As shown, the first valve element 43 is disposed on the side of the first flexible seal 42 away from the suction side 11, and the first valve element 43 has a plurality of first spring bodies 431. The number of first spring bodies 431 is the same as the number of medium suction end 111 and first through hole 421, and is uniquely and correspondingly disposed. Each first spring body 431 can also be deflected into the uniquely corresponding first through hole 421.

[0024] In practical applications, when any medium suction end 111 is stretched within the uniquely corresponding capsule 21, such as Figure 3 and Figure 4 As shown, the suction end 111 generates negative pressure and drives the uniquely corresponding first spring body 431 to deflect into the uniquely corresponding first through hole 421. Furthermore, when the first spring body 431 deflects into the uniquely corresponding first through hole 421, it combines... Figure 1 As shown, the first spring body 431 opens the uniquely corresponding medium intake end 111. Conversely, when any medium intake end 111 is compressed by the uniquely corresponding capsule 21, as... Figure 5 As shown, the medium suction end 111 generates positive pressure and drives the uniquely corresponding first spring body 431 to return to its original position. When the first spring body 431 returns to its initial state, it can also close the uniquely corresponding medium suction end 111. Furthermore, it should be noted that, as... Figure 4 and Figure 5 As shown, the first flexible seal 42 and the first valve element 43 can be integrally formed. Of course, in some embodiments, the first flexible seal 42 and the first valve element 43 can also be connected by a snap-fit ​​mechanism. However, in this embodiment, the structure of the first flexible seal 42 and the first valve element 43 is not specifically limited. In order to close the uniquely corresponding medium suction end 111 when each first spring body 431 returns to its initial state, i.e., when it deflects away from the uniquely corresponding medium suction end 111, in some embodiments, such as... Figure 1 As shown, the medium suction end 111 is a conical orifice, meaning the diameter of the conical orifice gradually increases from the suction side 11 towards the direction away from the suction side 11. In other words, the diameter of the conical orifice on the suction side 11 should be larger than the diameter of other parts. Simultaneously, it is necessary to ensure that the diameter of the conical orifice on the suction side 11 is approximately the same as the diameter of the first spring body 431. This allows the first spring body 431 to deflect into the conical orifice when negative pressure is generated in the capsule 21, thus opening the liquid inlet side of the conical orifice. Conversely, when positive pressure is generated in the capsule 21, combined with… Figure 1 As shown, the first spring body 431 can deflect outwards from the conical hole, thereby sealing the liquid inlet side of the conical hole and preventing the medium that has been sucked in by each capsule 21 from forming a backflow through each medium suction end 111.

[0025] Similarly, the second sealing assembly 5 can adopt the same structure as the first sealing assembly 4. Specifically, as follows: Figure 1 As shown, the second sealing assembly 5 can be disposed on the pump outlet side 12 of the medium inlet / outlet bracket 1, and when each bladder 21 is compressed simultaneously, it combines... Figure 5 As shown, the second sealing assembly 5 can open each medium pump outlet 121, and when each bladder 21 extends and retracts simultaneously, it combines... Figure 3 and Figure 4 As shown, the second sealing assembly 5 can close each medium pump outlet 121.

[0026] And, as Figure 1 As shown, the second sealing assembly 5 includes: a second flexible seal 52 and a second valve element 53. The second flexible seal 52 is disposed on the pump outlet side 12, and the second flexible seal 52 has a plurality of second through holes 521. The number of second through holes 521 is the same as the number of media pump outlet ends 121, and they are uniquely and correspondingly arranged. Additionally, as... Figure 6 As shown, the second valve element 53 is disposed on the side of the second flexible seal 52 away from the pump outlet side 12. The second valve element 53 has a plurality of second spring bodies 531, and the number of second spring bodies 531 is the same as the number of the medium pump outlet 121 and the number of the second through hole 521, and is uniquely and correspondingly disposed. Each second spring body 531 can also be deflected into the uniquely corresponding second through hole 521.

[0027] In practical applications, when any medium is compressed at the pump outlet 121 within the uniquely corresponding bladder 21, combined with... Figure 1 and Figure 5 As shown, the media pump outlet 121 generates positive pressure and drives the uniquely corresponding second spring body 531 to deflect into the uniquely corresponding second through hole 521. Furthermore, when each second spring body 531 deflects into the uniquely corresponding second through hole 521, each second spring body 531 opens the uniquely corresponding media pump outlet 121. Conversely, when any media pump outlet 121 is stretched within the uniquely corresponding bladder 21, it combines... Figure 2 and Figure 3 As shown, the medium pump outlet 121 generates negative pressure and drives the uniquely corresponding second spring body 531 to return to its original position. When the second spring body 531 returns to its initial state, it combines with... Figure 1As shown, the second spring body 531 can also close the uniquely corresponding medium pump outlet 121. Furthermore, it should be noted that the second flexible seal 52 and the second valve element 53 can be integrally formed. Of course, in some embodiments, the second flexible seal 52 and the second valve element 53 can also be connected by a snap-fit ​​mechanism. However, in this embodiment, the structure of the second flexible seal 52 and the second valve element 53 is not specifically limited.

[0028] In addition, in this embodiment, such as Figure 1 and Figure 7 As shown, the suction direction of the medium inlet / outlet support 11 and the discharge direction of the medium outlet 12 form an angle. Therefore, in this embodiment, the suction side 11 and the discharge side 12 are not on the same axis, thereby reducing the overall height of the diaphragm pump. However, as a preferred embodiment, the suction direction of the medium inlet 11 and the discharge direction of the medium outlet 12 should be kept as perpendicular as possible, that is, the directions of the suction side 11 and the discharge side 12 of the medium inlet / outlet support 1 are consistent with the liquid inlet and liquid outlet directions of the diaphragm pump, respectively. This allows the bladder 21 to be arranged laterally, which can reduce the overall height of the diaphragm pump while also reducing the resistance of the liquid and gaseous media during flow.

[0029] Furthermore, it is worth mentioning that, in order to facilitate the installation of the first sealing assembly 4 and the second sealing assembly 5 on the medium inlet / outlet bracket 1, such as... Figure 12 As shown, a first mounting groove 113 for mounting the first sealing assembly 4 can be provided on the suction side 11, and at the same time, as Figure 1 As shown, a second mounting groove 123 for mounting the second sealing assembly 5 can be provided on the pump outlet side 12, and foolproof structures can be provided between the first sealing assembly 4 and the first mounting groove, and between the second sealing assembly 5 and the second mounting groove 123. For example, taking the second sealing assembly 5 as an example, as... Figure 1 As shown, the foolproof structure may include: a positioning protrusion 54 provided on the second flexible seal 52 and a positioning groove 124 provided on the groove wall of the second mounting groove 123. The positioning protrusion 54 may be formed by a partial protrusion of the second flexible seal 52 of the second sealing assembly 5. Thus, when the second flexible seal 52 is placed in the positioning groove 124, the positioning protrusion 54 and the positioning groove 124 cooperate with each other to ensure the accuracy of the installation position of the second sealing assembly 5.

[0030] Furthermore, due to some embodiments, such as Figure 1 , Figure 3 and Figure 5As shown, both the pump outlet end 121 on the pumping side 12 and the suction end 111 on the suction side 11 can have multiple media outlets. Therefore, in application, at least one media outlet end 121 can be used as an air outlet, and at least one media outlet end 121 can be used as a liquid outlet. Additionally, corresponding to the air outlet and liquid outlet, at least one media suction end 111 can be used as an air intake port, and at least one media intake end 111 can be used as a liquid intake port, thereby enabling the diaphragm pump 1 to simultaneously draw in and pump out fluid and gaseous media, thus laying the foundation for the media output device to pump out foam media. Of course, in practical applications, each media outlet end 121 on the pumping side 12 can also be used as a liquid outlet, and each media suction end 111 on the suction side 11 can be used as a liquid intake port. Alternatively, each media outlet end 121 on the pumping side 12 can be used as an air outlet, and each media suction end 111 on the suction side 11 can be used as an air intake port. In this embodiment, the media drawn in and pumped out by each media suction end 111 and each media pumping end 121 are not specifically limited.

[0031] Furthermore, when at least one of the media pump outlets 121 is a liquid outlet, after the diaphragm pump 1 completes pumping out the liquid medium, some residual liquid medium will inevitably remain between the second spring body 531 of the second valve element 53 and the pumping side 12 of the media inlet / outlet support 1. This residual liquid medium will gradually solidify over time, causing adhesion between the second spring body 531 and the media inlet / outlet support 1. Once adhesion occurs, the second spring body 531 of the second valve element 53 may be unable to open the media pump outlet 121 under positive pressure, thus causing blockage of the media pump outlet 121. To prevent this phenomenon, as a preferred embodiment, in some embodiments, when the media pump outlet 121 is used as a liquid outlet, such as... Figure 10 As shown, the liquid outlet includes an inlet side 1211 and an outlet side 1212, and the outlet side 1212 of the liquid outlet is used to be opened or closed by the second spring body 531 of the second valve element 53.

[0032] Among them, such as Figure 11As shown, the liquid outlet side 1212 to the liquid inlet side 1211 of the liquid outlet hole partially expands radially along the liquid outlet hole 11, forming an inlet cavity 1213 connected to the inlet side 1211 and an outlet cavity 1214 connected to the liquid outlet side 1212. In this embodiment, the inner diameter of the outlet cavity 1214 is larger than the inner diameter of the inlet cavity 1213. With this arrangement, the contact area between the second spring body 531 and the pumping side 12 of the medium inlet / outlet support 1 can be reduced while controlling the flow rate of the liquid outlet hole. This ensures that when the second spring body 531 is subjected to negative pressure, most of the second spring body 531 cannot completely adhere to the pumping side 12, thereby effectively preventing adhesion between the second spring body 531 and the medium inlet / outlet support 1 and reducing the possibility of blockage of the liquid outlet hole.

[0033] Example 2 The second embodiment of the present invention relates to a diaphragm pump, such as Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, it includes: a driving device 3, which is connected to each capsule 21 of the medium extraction component, and the driving device 3 is used to drive each capsule 21 to compress or stretch simultaneously.

[0034] Furthermore, in this embodiment, in order to enable the drive device 3 to simultaneously stretch or compress each capsule 21, such as Figure 9 , Figure 6 As shown, the drive device 3 includes a motor bracket 31, a pull rod 32, and a drive assembly 33. The motor bracket 31 includes a first mounting plate 311 opposite to the medium inlet / outlet side 13 and a second mounting plate 312 perpendicular to the first mounting plate 311. The first mounting plate 311 has several locking holes 3111. Figure 6 As shown, the number of slots 3111 is the same as the number of capsules 21, and they are uniquely matched. Each capsule 21 has a portion that is inserted into the uniquely matched slot 3111.

[0035] In addition, such as Figure 6 As shown, the pull rod 32 is disposed on the second mounting plate 312 and connected to each bladder 21. The pull rod 32 is slidable relative to the first mounting plate 311. Furthermore, a drive assembly 33 is connected to the pull rod 32 and can be used to drive the pull rod 32 to slide relative to the first mounting plate 311. In practical applications, when the pull rod 32 slides towards the first mounting plate 311, it combines... Figure 5 As shown, the pull rod 32 can compress each bladder 21 simultaneously, and when the pull rod 32 slides away from the first mounting plate 311, the pull rod 32 can stretch each bladder 21 simultaneously.

[0036] Furthermore, it should be noted that in order to achieve the connection between the pull rod 32 and each bladder body 21, combined with Figure 2 and Figure 6 As shown, each capsule 21 has a portion protruding away from the opening 211 on one side, forming a connecting portion 212. Simultaneously, the pull rod 32 connects to the connecting portion 212 of each capsule 21, for example, by combining... Figure 6 As shown, the pull rod 32 is provided with a connecting hole 323 for each bladder 21, and the number of connecting holes 323 is the same as the number of bladders 21, and they correspond uniquely. Figure 2 and Figure 4 As shown, the connecting portion 212 of each capsule 21 has an outwardly protruding flange structure 213. During assembly, it is combined... Figure 4 and Figure 6 As shown, the connecting portion 212 of each bladder 21 can be squeezed into the unique corresponding connecting hole 323, so that the flange structure 213 of each connecting portion 212 can be engaged with the pull rod. Therefore, when the pull rod 32 moves directionally relative to the first mounting plate 311, the pull rod 32 can compress or stretch each bladder 21. (Millions, Xing Ze, Law) In addition, it is worth mentioning that, such as Figure 6 As shown, the drive assembly 33 includes: a motor 331, an eccentric wheel 332 connected to the main shaft 3311 of the motor 331, and a cavity 321 on the pull rod 32. The eccentric wheel 332 is disposed within the cavity 321 and is also connected to the main shaft of the motor 331. In practical applications, as shown in Figure 6, the motor 331 can drive the eccentric wheel 332 to rotate, and when the eccentric wheel 332 rotates, it can drive the pull rod 32 to reciprocate relative to the first mounting plate 311. This allows the pull rod 32 to slide and stretch or compress each bladder 21 on the second mounting plate 312, enabling each bladder 21 to complete the suction and pumping of liquid or gas media. Furthermore, to achieve the mounting and fixing of the motor 331 to the motor bracket 31, such as... Figure 6 As shown, the motor 331 is located on the side of the second mounting plate 312 away from the pull rod 32. At the same time, the second mounting plate 312 is provided with a shaft hole 3121 through which the main shaft of the motor 331 can pass. The main shaft of the motor 331 can pass smoothly through the shaft hole 3121 and connect with the eccentric wheel 332.

[0037] Furthermore, as a preferred embodiment, in some implementations, such as Figure 7As shown, the drive assembly 33 also includes a bearing 333, wherein the bearing 333 is disposed in the cavity 321 of the tie rod 32, and the inner ring of the bearing 333 is connected to the eccentric wheel 332, while the outer ring of the bearing 333 can be connected to the tie rod 32, so that when the motor 331 drives the eccentric wheel 332 to rotate around the axis of the main shaft 3311, as Figure 10 As shown, by relying on the characteristic that the inner and outer rings of the bearing 333 rotate relative to each other, the eccentric wheel 332 can be prevented from directly impacting the tie rod 32 during rotation without affecting its rotation. Therefore, the friction between the eccentric wheel 332 and the tie rod 32 can be reduced, thereby reducing the noise generated by the drive assembly 33 during operation and making the diaphragm pump 1 have better quietness during operation.

[0038] Furthermore, since the pull rod 32 moves relative to the first mounting plate 311 only by means of the driving force of the eccentric wheel 332 during rotation, the pull rod 32 will swing significantly left and right when compressing or stretching each bladder 21. Therefore, when the medium pumping component 11 includes multiple bladders 21, the force exerted on each bladder 21 by the pull rod 32 will be uneven, resulting in differences in the compression or stretching of each bladder 21. In order to ensure that the compression or stretching of each bladder 21 is completely synchronized and that the force exerted on each bladder 21 is completely consistent when the pull rod 32 moves relative to the first mounting plate 311, in some embodiments, the pull rod 32 is also slidably connected to the second mounting plate 312 along the direction relative to the first mounting plate 311. And, to achieve the slidable connection between the two, for example, Figure 8 and Figure 9 As shown, the second mounting plate 312 is provided with a limiting groove 3121, which extends in a direction perpendicular to the first mounting plate 311. The pull rod 32 has a limiting protrusion 322 on one side relative to the second mounting plate 312, which can be embedded in the limiting groove 3121. The limiting protrusion 322 is slidable along the length of the limiting groove 3121. It is evident that when the pull rod 32 moves relative to the first mounting plate 311, the sliding engagement between the limiting protrusion 322 and the limiting groove 3121 guides and limits the pull rod 32, preventing large-amplitude swaying during movement. This ensures the synchronicity of each bladder 21 during compression or stretching, avoiding asynchronous gas-liquid output.

[0039] Example 3 The third embodiment of the present invention relates to a foaming mechanism, such as... Figure 14 As shown, it includes: a diaphragm pump as described in the second embodiment, and a mixing chamber 6. Furthermore, in conjunction with... Figure 13 and Figure 15As shown, the mixing chamber 6 has an inlet side 61 composed of several medium inlet ends 611 and a medium outlet side 62 disposed away from the inlet side 61. The inlet side 61 is detachably connected to the pump outlet side 12 of the diaphragm pump, and the number of medium inlet ends 611 and medium pump outlet ends 62 are the same and uniquely corresponding, with each medium inlet end 611 communicating with its uniquely corresponding medium pump outlet end 62.

[0040] In practical applications, the mixing chamber 6 is used to receive multiple media pumped from the pumping side 12 of the diaphragm pump through the inlet side 61 and to mix the multiple media. At the same time, the mixing chamber 6 is also used to pump the mixed media out from the media discharge side 62.

[0041] Specifically, in this embodiment, such as Figure 13 and Figure 15 As shown, the mixing chamber 6 includes: a mixing chamber body 63, an upper sealing member 64, and a lower sealing member 65. Wherein, as... Figure 15 As shown, the mixing chamber body 63 has an upper opening 631 on its top side and a lower opening 632 on its bottom side. An upper sealing element 64 is disposed on the top side of the mixing chamber body 63, directly sealing the upper opening 631. A lower sealing element 65 is disposed on the bottom side of the mixing chamber body 63. It should be noted that in some embodiments, the upper sealing element 64 and the lower sealing element 65 can be thin-film sealing elements, and are connected to the mixing chamber body 63 via a heat-sealing process. That is, the upper sealing element 64 and the lower sealing element 65 are heat-sealed to the mixing chamber body 63. This heat-sealing process ensures that the upper sealing element 64 and the lower sealing element 65 are connected to the mixing chamber body 63 without gaps at the connection points, thus guaranteeing the sealing performance of the mixing chamber 63 and preventing leakage.

[0042] In addition, such as Figure 10 and Figure 12 As shown, the foaming mechanism of this embodiment further includes a nozzle 9, and the nozzle 9 is detachably connected to the medium discharge side 62 of the mixing chamber 63, forming a seal between the nozzle 9 and the medium discharge side 62. This ensures that when multiple media are discharged to the nozzle 9, no leakage will occur at the connection between the nozzle 9 and the medium discharge side 62.

[0043] Specifically, such as Figure 13 As shown, a mounting hole 68 is provided on the medium discharge side 62, and, combined with Figure 10 As shown, the mounting hole 68 is partially inserted into the nozzle 9 to achieve an interference fit. In some embodiments, such as... Figure 13 As shown, mounting hole 68 is a circular hole, and as... Figure 13As shown, the part of the nozzle 9 inserted into the mounting hole 68 is shaped to match and correspond to the mounting hole 68. When the nozzle 9 is inserted into the mounting hole 68, the insertion part of the nozzle 9 and the mounting hole 68 are interference-fitted, 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 component 2 can be tightly pressed together to achieve a seal, thereby effectively avoiding leakage. It should be noted that the mounting hole 68 in this embodiment is only described as a circular hole. In actual applications, the mounting hole 68 can also adopt other shapes. However, in this embodiment, the shape of the mounting hole 68 is not specifically limited.

[0044] In other embodiments, as an alternative, such as Figure 13 As shown, the medium discharge side 62 is also provided with a protruding connecting part 621, at which time the mounting hole 68 can extend to the connecting part 621. In actual use, combined with Figure 10 As shown, the nozzle 9 can be tightly connected to the connection part 621 through the interference fit with the mounting hole 68, thereby ensuring the sealing performance of the connection between the nozzle 9 and the medium discharge side 62.

[0045] Furthermore, as a preferred embodiment, in some implementations, such as Figure 13 As shown, a sealing cavity 67 is also provided on the medium discharge side 62, and the sealing cavity 67 is used to surround the mounting hole 68. Specifically, in order to form the sealing cavity 67 on the medium discharge side 62, as follows: Figure 13 As shown, a chamber 69 with a sealing cavity 67 can be provided on the medium discharge side 62. The chamber 69 can directly surround the mounting hole 68 or the connecting part 621 with the mounting hole 68. When a part of the nozzle 9 is inserted into the mounting hole 68, glue can be applied into the chamber 69 until the glue completely fills the entire sealing cavity 67, thereby completely sealing the connection between the nozzle 9 and the medium discharge side 62 and ensuring the sealing performance of the connection between the nozzle 9 and the medium discharge side 62.

[0046] Furthermore, in this embodiment, since at least one medium suction end 111 can be used to draw liquid medium and at least one medium suction end 111 can be used to draw gaseous medium, the liquid medium and gaseous medium pumped from the pump outlet side 12 of the diaphragm pump can be mixed by the mixing chamber 6 after entering the mixing chamber 6, and foam can be generated. This allows the foaming mechanism in this embodiment to be applied to the liquid dispensing equipment of a hand sanitizer.

[0047] In addition, as a preferred embodiment, such as Figure 14 and Figure 16 As shown, the foaming mechanism of this embodiment further includes: a pump bottom cover 7, and, combined with Figure 16As shown, the pump base cover 7 includes, along a predetermined axis, a base cover body 71 and a media suction component 72 disposed within the base cover body 71. The base cover body 71 has a first mounting side 713 detachably connected to the media inlet / outlet bracket 1 and a second mounting side 714 detachably connected to the liquid storage container 8, along the predetermined axis. The first mounting side 713 and the second mounting side 714 are arranged opposite to each other along the predetermined axis. Furthermore, in practical applications, such as... Figure 14 and Figure 16 As shown, at least one medium suction end 111 in the medium inlet / outlet support 1 is used to draw liquid medium from the liquid storage container 8 through the medium suction component 72 when each of the bladders 21 is stretched simultaneously.

[0048] Specifically, in this embodiment, such as Figure 14 and Figure 16 As shown, the bottom cover body 71 includes an inner cover 711 and an outer cover 712, and the inner cover 711 and the outer cover 712 are coaxially arranged along a predetermined axis, while the suction component 72 is disposed on the inner cover 711 along the predetermined axis. (The last sentence appears to be incomplete and possibly refers to a different part of the design.) Figure 14 As shown, the inner cover 711 is detachably connected to the medium inlet / outlet bracket 1, while the outer cover 712 is detachably connected to the liquid storage container 8. It is evident that by providing the pump bottom cover 7, the liquid storage container 8 and the diaphragm pump can be effectively connected, resulting in a more compact structure and smaller volume and size for the entire foaming device.

[0049] In addition, it is worth mentioning that, such as Figure 16 and Figure 17 As shown, the inner cover 711 includes a top plate 7111 and an inner wall 7112. The top plate 7111 has a suction component 72 disposed along a predetermined axis. The inner wall 7112 is circumferentially arranged around the top plate 7111, and forms a locking area 7113 on the top plate for locking the liquid storage container 8. Furthermore, in this embodiment, as... Figure 17 As shown, the outer cover 712 includes an outer wall 7121 and a bottom plate 7122. The outer wall 7121 is disposed opposite to the inner wall 7112 around a predetermined axis. The bottom plate 7122 is connected to both the outer wall 7121 and the inner wall 7112, and is combined with... Figure 16 and Figure 17 As shown, a connector 73 for connecting the medium inlet / outlet bracket 1 is also provided on the base plate 7122. For example, the connector 73 can be a stud with a threaded hole, which can be connected to the medium inlet / outlet bracket 1 by means of a bolt. Of course, in actual applications, other components can also be used for the connector 73, and the structure of the connector 73 is not specifically limited in actual applications.

[0050] In addition, such as Figure 16 and Figure 17As shown, the side of the outer wall 7121 away from the inner wall 7112 is used to insert the liquid storage container 8, which is connected to the inner cover 711, into the pump head of the pumping device. Specifically, as... Figure 17 As shown, a plurality of first annular protrusions 7123 are formed on the side of the outer wall 7121 away from the inner wall 7112 along a predetermined axis. Each first annular protrusion 7123 has a first lower engaging surface 71231 and a first upper engaging surface 71232 opposite to the first lower engaging surface 7123 along the predetermined axis. Simultaneously, at least a portion of the first upper engaging surface 71232 extends obliquely towards the base plate 7122 from the side connected to the outer wall 7121 to the other side. It is clear from the above that the plurality of first annular protrusions 7123 on the outer wall 7121 effectively hold the liquid storage container 8 into the pump head of the pumping device. Therefore, even if leakage occurs, it can prevent liquid media from dripping onto other components of the equipment, thus avoiding corrosion and damage to other parts. At the same time, the first annular protrusions 7123 also increase the sealing performance between the outer wall 7121 of the outer cover 712 and the pump head after the liquid storage container is inserted into the pump head.

[0051] In addition, in order to allow each capsule 21 to simultaneously stretch, draw in both liquid and gaseous media through the media suction component 72, such as Figure 16 and Figure 17 As shown, the medium suction component 72 includes: a first upper suction channel 721, a second upper suction channel 722, and a first lower suction channel 723. The first upper suction channel 721 and the second upper suction channel 722 are each formed by a portion of the upper surface of the top plate 7111 protruding away from the bottom plate 7122. The first lower suction channel 723 is formed by a portion of the lower surface of the top plate 7111 protruding towards the bottom plate 7122 and communicates with the first upper suction channel 721.

[0052] During the assembly process, such as Figure 17 As shown, the first lower suction channel 723 can be connected to the liquid outlet 81 of the liquid storage container 8, and the first upper suction channel 721 can be connected to one of the medium suction ends 111, so that the first upper suction channel 721 can draw liquid medium from the liquid storage container 8 through the first lower suction channel 723. In addition, the second upper suction channel 722 can be connected to the other medium suction end 111, and the second upper suction channel 722 also has a suction port (not shown in the figure) exposed on the lower surface of the top plate 7111. The second upper suction channel 722 is used to draw gaseous medium through the suction port.

[0053] Furthermore, in order to achieve the connection between the first lower suction channel 723 and the liquid outlet 81 of the liquid storage container 8, such as Figure 17 As shown, the first lower suction channel 723 is partially inserted directly into the liquid outlet 81 of the liquid storage container 8. Meanwhile, as... Figure 17 As shown, a second annular protrusion 7231 is formed on the outer surface of the first lower suction channel 723. Furthermore, the second annular protrusion 7231 has a second lower engaging surface 72311 and a second upper engaging surface 72312 opposite to the second lower engaging surface 72311 along a predetermined axial direction. The second upper engaging surface 72312 extends obliquely away from the top plate 7111 from at least one side connected to the outer surface of the first lower suction channel 723. It is thus evident that the second annular protrusion 7231 improves the sealing performance between the first lower suction channel 723 and the liquid outlet 81 when the first lower suction channel 723 is inserted into the liquid outlet 81 of the liquid storage container 8.

[0054] Example 4 The fourth embodiment of the present invention relates to a hand sanitizer, such as... Figure 17 As shown, it includes: a foaming mechanism as described in the third embodiment, and a liquid storage container 8. At least one medium suction end 11 is used to draw liquid medium from the liquid storage container 8.

[0055] Furthermore, in this embodiment, since the medium intake direction of the diaphragm pump on the suction side 11 and the medium discharge direction on the discharge side 12 of the diaphragm pump in the foaming mechanism are perpendicular to each other, after the liquid storage container 8 and the foaming mechanism are installed, the axial direction of the liquid storage container 8 can be consistent with the medium intake direction of the suction side 11. That is, the axial direction of the entire liquid storage container 8 is perpendicular to the medium discharge direction of the discharge side 12, making the entire liquid storage container 8 vertically placed, while each capsule 21 is horizontally placed. Therefore, the height and volume of the entire handwashing machine head can be greatly reduced, from the original 98mm to 52mm, a reduction of nearly half, making the structure of the entire handwashing machine more compact. At the same time, with the help of the medium inlet / outlet bracket 1, the intake and pumping of gaseous or liquid media can be realized simultaneously, thereby greatly reducing the number of parts in the handwashing machine head, reducing the diameter of the head from 72mm to 65mm, making the structure of the entire head more compact. In addition, by setting the pump bottom cover 7 to connect the liquid storage container 8 and the diaphragm pump, the structure of the entire foaming device can be made more compact, further reducing the volume and size of the whole machine.

[0056] Those skilled in the art will understand that the above embodiments are specific implementations of the present invention, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A cavity mechanism applied to a diaphragm pump, characterized in that, The media outlet direction of the bladder mechanism is perpendicular to the media inlet direction and the same as the liquid outlet direction of the diaphragm pump; the bladder mechanism includes: A medium inlet / outlet support has an inlet side consisting of a plurality of medium inlet ends and an outlet side consisting of a plurality of medium outlet ends; wherein the number of medium inlet ends and the number of medium outlet ends are the same and they are uniquely corresponding. Wherein, the medium suction direction on the suction side of the medium inlet / outlet bracket is perpendicular to the medium pumping direction on the pumping side; The medium inlet / outlet support is provided with a plurality of bladders, each of which is also used to connect to the drive device of the diaphragm pump and to be simultaneously stretched or compressed under the drive of the drive device. When each of the capsules is stretched simultaneously, each capsule is used to simultaneously draw in liquid or gaseous media through the uniquely corresponding medium suction end; when each of the capsules is compressed simultaneously, each capsule is used to simultaneously pump out the drawn-in liquid or gaseous media through the uniquely corresponding medium discharge end.

2. The cavity mechanism according to claim 1, characterized in that, The cavity mechanism also includes: A media extraction component is disposed on the media inlet / outlet support and includes a plurality of the aforementioned capsules; wherein the number of the capsules is the same as the number of the media suction end and the media pump outlet end, and is uniquely and correspondingly provided.

3. The cavity mechanism according to claim 2, characterized in that, The media inlet / outlet support also has: a media inlet / outlet side composed of a plurality of media inlet / outlet ends, wherein the number of media inlet / outlet ends is the same as the number of media suction ends, media pumping ends and the bladder, and is uniquely and correspondingly set; Each of the aforementioned medium inlet / outlet ends is connected to a uniquely corresponding medium suction end and a medium pump outlet end; each of the aforementioned bladders has an opening for liquid or gas medium to enter or exit, and the opening of each of the aforementioned bladders is connected to a uniquely corresponding medium inlet / outlet end.

4. The cavity mechanism according to claim 3, characterized in that, The medium extraction component further includes: A flexible component is disposed on the medium inlet / outlet support; the flexible component has a first sealing side that fits against the medium inlet / outlet side and a second sealing side that is opposite to the first sealing side. Each of the capsules is formed by the flexible component from the first sealing side to the second sealing side, with a portion of each capsule being extruded away from the medium inlet / outlet side, and after extrusion, the opening of each capsule is formed on the first sealing side.

5. The cavity mechanism according to claim 3, characterized in that, The cavity mechanism also includes: The first sealing assembly is disposed on the suction side of the medium inlet / outlet bracket; The first sealing assembly is used to open each of the media intake ends when each of the bladders is stretched simultaneously; the first sealing assembly is also used to close each of the media intake ends when each of the bladders is compressed simultaneously.

6. The cavity mechanism according to claim 5, characterized in that, The first sealing assembly includes: A first flexible seal is disposed on the suction side and has a plurality of first through holes; the number of the first through holes is the same as the number of the medium suction end and is uniquely and correspondingly disposed. The first valve element is disposed on the side of the first flexible seal opposite to the suction side; the first valve element has a plurality of first spring bodies, the number of the first spring bodies being the same as the number of the medium suction end and the number of the first through hole, and uniquely corresponding to each other, and each first spring body can be deflected into the uniquely corresponding first through hole. Each of the first spring bodies is used to close the medium suction end that is uniquely and correspondingly provided when it is in the initial position, and each of the first spring bodies is also used to open the medium suction end that is uniquely and correspondingly provided when it is deflected toward the first through hole that is uniquely and correspondingly provided. When the capsule at any of the media suction ends is stretched, it generates negative pressure and drives the first elastic body, which is uniquely corresponding to the first through hole, to deflect into the first through hole. When the capsule, which is uniquely positioned at any of the media intake ends, is compressed, it generates positive pressure and drives the uniquely positioned first spring body to return to its original position.

7. The cavity mechanism according to claim 6, characterized in that, The first flexible seal is snapped into connection with the first valve plate element.

8. The cavity mechanism according to claim 3, characterized in that, The cavity mechanism also includes: The second sealing assembly is disposed on the suction side of the medium inlet / outlet bracket; The second sealing assembly is used to close each of the media pump outlets when each of the bladders is stretched simultaneously; the second sealing assembly is also used to open each of the media pump outlets when each of the bladders is compressed simultaneously.

9. The cavity mechanism according to claim 8, characterized in that, The second sealing assembly includes: A second flexible seal is disposed on the pump outlet side and has a plurality of second through holes; the number of the second through holes is the same as the number of the medium pump outlet end, and they are uniquely and correspondingly disposed. The second valve element is disposed on the side of the second flexible seal facing the pump outlet side; the second valve element has a plurality of second spring bodies, the number of the second spring bodies being the same as the number of the medium pump outlet end and the number of the second through holes, and uniquely corresponding to each other, and each second spring body can be deflected into the uniquely corresponding second through hole; Each of the second spring bodies is used to close the media pump outlet end that is uniquely provided when it is in the initial position, and each of the second spring bodies is also used to open the media pump outlet end that is uniquely provided when it is deflected toward the second through hole that is uniquely provided. When the bladder, which is uniquely configured at the outlet end of any of the media pumps, is compressed, it generates positive pressure and drives the uniquely configured second spring sheet body to deflect into the uniquely configured second through hole. When the bladder, which is uniquely positioned at the outlet of any of the media pumps, is stretched, it generates negative pressure and drives the uniquely positioned second spring sheet body back into place.

10. The cavity mechanism according to any one of claims 2-9, characterized in that, At least one of the media pump outlets is a liquid outlet hole, and at least one of the media suction ends is a liquid suction hole corresponding to the liquid outlet hole; At least one of the media pump outlets is an air outlet, and at least one of the media suction ends is an air inlet corresponding to the air outlet.

11. The cavity mechanism according to claim 10, characterized in that, The liquid outlet has an inlet side and an outlet side opposite to the inlet side; Wherein, a portion of the liquid outlet side expands radially along the direction from the liquid inlet side to the liquid outlet side, so that the liquid outlet side forms an inlet cavity connected to the liquid inlet side and an outlet cavity connected to the liquid outlet side, wherein the inner diameter of the inlet cavity is smaller than the inner diameter of the outlet cavity.

12. A diaphragm pump, characterized in that, include: The cavity mechanism as described in any one of claims 2-11; A driving device, connected to each of the capsules of the medium extraction component, is used to drive each of the capsules to compress or stretch simultaneously.

13. The diaphragm pump according to claim 12, characterized in that, The driving device includes: Motor bracket; the motor bracket includes: a first mounting plate disposed opposite to the medium inlet / outlet side, and a second mounting plate perpendicular to the first mounting plate; wherein, the first mounting plate is provided with a plurality of locking holes, the number of locking holes being the same as the number of the capsules, and uniquely corresponding to each other, and each capsule having a portion that is respectively locked into the uniquely corresponding locking hole; A pull rod is disposed on the second mounting plate and connected to each of the bladders; the pull rod is slidable relative to the first mounting plate; wherein, the pull rod is used to compress each of the bladders when sliding towards the first mounting plate; the pull rod is also used to stretch each of the bladders when sliding away from the first mounting plate; A drive assembly, connected to the pull rod, is used to drive the pull rod to slide relative to the first mounting plate.

14. The diaphragm pump according to claim 13, characterized in that, The drive assembly includes: a motor and an eccentric wheel connected to the main shaft of the motor; wherein the pull rod is further provided with a cavity for accommodating the eccentric wheel; The motor is used to drive the eccentric wheel to rotate, and the eccentric wheel is used to drive the pull rod to slide back and forth relative to the first mounting plate when rotating.

15. The diaphragm pump according to claim 14, characterized in that, The drive assembly further includes: a bearing disposed in the cavity of the connecting sleeve, the inner ring of the bearing being connected to the eccentric wheel, and the outer ring of the bearing being connected to the pull rod.

16. The diaphragm pump according to claim 14, characterized in that, The pull rod is also slidably connected to the second mounting plate in the direction relative to the first mounting plate. The second mounting plate is provided with a limiting groove, which extends in a direction perpendicular to the first mounting plate. The pull rod is provided with a limiting protrusion on one side of the second mounting plate that can be embedded in the limiting groove. The limiting protrusion is slidable along the length direction of the limiting groove.

17. The diaphragm pump according to claim 14, characterized in that, The motor is disposed on the side of the second mounting plate opposite to the pull rod, and the second mounting plate is provided with a shaft hole through which the main shaft of the motor can pass.

18. A foaming mechanism, characterized in that, include: The diaphragm pump as described in any one of claims 12-17; A mixing chamber has an inlet side consisting of several media inlet ends and a media outlet side disposed away from the inlet side; wherein the inlet side and the outlet side are detachably connected, the number of media inlet ends and the number of media outlet ends are the same and are uniquely corresponding, and each media inlet end is connected to the uniquely corresponding media outlet end. The mixing chamber is used to receive multiple media pumped from the pumping-out side of the diaphragm pump through the inlet side, and to mix the multiple media. The mixing chamber is also used to pump the mixed media out from the media discharge side.

19. The foaming mechanism according to claim 18, characterized in that, The foaming mechanism also includes: The nozzle is detachably connected to the media discharge side of the mixing chamber and forms a seal with the media discharge side.

20. The foaming mechanism according to claim 19, characterized in that, The medium discharge side is provided with a mounting hole into which the nozzle portion can be inserted; or, the medium discharge side is provided with a protruding connecting portion, and the connecting portion is provided with a mounting hole into which the nozzle portion can be inserted; the mounting hole is interference-fitted with the nozzle. A sealing cavity is also provided on the medium discharge side, which is used to surround the mounting hole.

21. A hand sanitizer dispenser, characterized in that, include: The foaming mechanism and liquid storage container as described in any one of claims 18-20; wherein at least one of the media suction ends is used to draw liquid media from the liquid storage container; The axial direction of the liquid storage container is perpendicular to the pumping direction of the medium on the pumping side.

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