Liquid mixing device, foaming device and liquid output apparatus

Abstract

A liquid mixing device, comprising a body (1), a pressure source (2), and a control valve assembly (3). The body (1) is provided with a foaming liquid accommodating cavity (11), a mixing cavity (12), and a pressure cavity (13). The foaming liquid accommodating cavity (11) is in communication with the mixing cavity (12) by means of an openable and closable channel (17). The control valve assembly (3) can be actuated under the drive of a first pressure differential, so as to open the channel (17), enabling a foaming liquid in the foaming liquid accommodating cavity (11) to flow into the mixing cavity (12).

Description

Liquid mixing device, foaming device and liquid outlet equipment

[0001] The present application claims priority from the Chinese patent application No. 202421395252.4 filed on June 18, 2024 and entitled "A liquid mixing device, a foaming device and a liquid outlet equipment", the contents of which should be understood as incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to, but is not limited to, the technical field of bathroom equipment, in particular to a liquid mixing device, a foaming device and a liquid outlet equipment. BACKGROUND

[0003] Intelligent bathroom equipment is usually provided with a liquid mixing device and a foaming device. For example, an intelligent toilet is provided with a ceramic water seal foam splash-proof function. The main working principle is to mix and dilute the foaming liquid and water through the liquid mixing device, and then rely on the foaming stone or mixed gas injection to divide and generate foam. The foam flows to the ceramic water seal surface to form a certain thickness of foam layer. When an object falls onto the water surface, the splashing water can be covered by the foam, thereby achieving the splash-proof function.

[0004] The current liquid mixing device adopts two water pumps to extract water and foaming liquid respectively; or a plurality of fluid channels and valves with complex structure are designed in the body of the liquid mixing device, and the plurality of fluid channels and valves are respectively used for conveying water and foaming liquid. The current liquid mixing device has complex structure design, high failure rate and high manufacturing cost. SUMMARY

[0005] The following is a summary of the subject matter of the detailed description herein. This summary is not intended to limit the scope of the claims.

[0006] The embodiment of the present application provides a liquid mixing device, which comprises a body, a foaming liquid containing cavity, a mixing cavity, a pressure cavity, a water flow inlet and a first opening which are in communication with the mixing cavity, and a second opening which is in communication with the pressure cavity; the foaming liquid containing cavity and the mixing cavity are in communication through an openable and closable channel, and the mixing cavity and the pressure cavity are separated by a partition; the foaming liquid containing cavity is arranged to contain foaming liquid, and the water flow inlet is arranged to supply water to the mixing cavity; a pressure source is in communication with the first opening and the second opening, and is arranged to be able to adjust the pressure of the pressure cavity and the mixing cavity, so that a first pressure difference can be formed between the pressure cavity and the mixing cavity, and a second pressure difference can be formed between the foaming liquid containing cavity and the mixing cavity; and a control valve assembly is arranged in the body and is arranged to control the opening and closing of the channel; and the control valve assembly is arranged to be able to act under the drive of the first pressure difference to turn on the channel, so that the foaming liquid in the foaming liquid containing cavity can flow to the mixing cavity under the drive of the second pressure difference.

[0007] The application further provides a foaming device, comprising the liquid mixing device as described in the above embodiments, further comprising a water storage member and a foaming assembly, the water storage member is in communication with the water inlet of the body and is configured to provide water for the mixing cavity; the foaming assembly is in communication with the mixing cavity of the body, and the foaming assembly is configured to form foam from the mixed liquid of water and foaming liquid output from the mixing cavity.

[0008] The application further provides a liquid outlet device, comprising the foaming device as described in the above embodiments.

[0009] The technical effects of the liquid mixing device are as follows:

[0010] The liquid mixing device of the application is configured to communicate the pressure source with the first opening of the mixing cavity and the second opening of the pressure cavity, so that a first pressure difference is formed between the pressure cavity and the mixing cavity, a second pressure difference is formed between the foaming liquid containing cavity and the mixing cavity, and the control valve assembly is driven by the first pressure difference to open the channel between the foaming liquid containing cavity and the mixing cavity, so that the foaming liquid is driven by the second pressure difference to enter the mixing cavity through the opened channel, and the foaming liquid entering the mixing cavity is mixed with the water entering the mixing cavity from the water inlet to form foam. Thus, the liquid mixing device of the application can use one pressure source to deliver water and foaming liquid to the mixing cavity, without the need to set two water pumps to extract water and foaming liquid respectively, so that the structure design of the liquid mixing device of the application is simplified, and the manufacturing cost is reduced.

[0011] Further, the foaming liquid of the application enters the mixing cavity through the channel, and the water enters the mixing cavity through the water inlet of the mixing cavity, so that the liquid mixing device of the application only needs to set one channel in the body, and water and foaming liquid can be delivered into the mixing cavity, without the need to set a complex fluid channel in the body to deliver water and foaming liquid to the mixing cavity, so that the structure design and manufacturing process of the fluid channel in the body of the liquid mixing device of the application are simplified.

[0012] Further, the pressure source of the application is in communication with the first opening of the mixing cavity and the second opening of the pressure cavity, the fluid in the mixing cavity is water or a mixture of water and foaming liquid (the foaming liquid has been diluted), so that the pressure source does not directly contact the viscous foaming liquid, and the internal components of the pressure source are prevented from being stuck by the viscous foaming liquid and failing.

[0013] Other aspects can be apparent after reading and understanding the accompanying drawings and detailed description.

[0014] SUMMARY

[0015] The accompanying drawings are used to provide further understanding of the technical solutions of the present application and form a part of the specification, and are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not constitute limitations to the technical solutions of the present application.

[0016] Fig. 1 is a structural schematic diagram of a current liquid mixing device;

[0017] Fig. 2 is a structural schematic diagram of a part of a structure of a liquid mixing device of an embodiment of the present application installed in a smart toilet;

[0018] Fig. 3 is a structural schematic diagram of a liquid mixing device of an embodiment of the present application;

[0019] Fig. 4 is a sectional structural schematic diagram of a liquid mixing device of an embodiment of the present application without a pressure source;

[0020] Fig. 5 is an exploded structural schematic diagram of Fig. 4;

[0021] Fig. 6 is a sectional structural schematic diagram of a shell of an embodiment of the present application;

[0022] Fig. 7 is a perspective structural schematic diagram of the shell of Fig. 6 viewed from one angle;

[0023] Fig. 8 is a perspective structural schematic diagram of the shell of Fig. 6 viewed from another angle;

[0024] Fig. 9 is a perspective structural schematic diagram of a lower cover of an embodiment of the present application;

[0025] Fig. 10 is a structural schematic diagram of a push rod of an embodiment of the present application;

[0026] Fig. 11 is a sectional structural schematic diagram of a partition of an embodiment of the present application;

[0027] Fig. 12 is a sectional structural schematic diagram of a liquid mixing device of an embodiment of the present application when a water suction pump is not working;

[0028] Fig. 13 is a sectional structural schematic diagram of the liquid mixing device of Fig. 12 when the water suction pump starts working;

[0029] Fig. 14 is a sectional structural schematic diagram of the liquid mixing device of Fig. 12 when the water suction pump continues working for a period of time;

[0030] Fig. 15 is a sectional structural schematic diagram of the liquid mixing device of Fig. 12 at the moment when the water suction pump stops working;

[0031] Fig. 16 is a sectional structural schematic diagram of the liquid mixing device of Fig. 12 when the water suction pump stops working for a period of time;

[0032] Fig. 17 is a sectional structural schematic diagram of a liquid mixing device of another embodiment of the present application;

[0033] Fig. 18 is a perspective view of a mixing device according to another embodiment of the present application;

[0034] Fig. 19 is a perspective view of the mixing device of Fig. 18, viewed from another angle.

[0035] Reference signs: 100'- current mixing device; 100- mixing device, 1- body, 11- foam liquid containing cavity, 12- mixing cavity, 121- first cavity, 122- second cavity, 123- third cavity, 124- fourth cavity, 125- communication port, 1251- first communication port, 1252- second communication port, 1253- third communication port, 13- pressure cavity, 131- mixed liquid outlet, 14- water flow inlet, 15- first opening, 16- second opening, 17- channel, 171- first water stop, 172- second water stop, 18- upper cover, 19- shell, 1-10- lower cover, 2- pressure source, 21- water suction pump, 211- water suction port, 212- water injection port, 22- pipeline, 221- first pipeline, 222- second pipeline, 3- control valve assembly, 31- push rod, 311- water stop cover plate, 312- annular groove, 313- support portion, 32- elastic member, 33- water stop pad, 4- partition, 41- fixed portion, 42- deformable portion, 421- annular protrusion, 5- sealing member.

[0036] Detailed description

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0038] Please refer to the structural schematic diagram of the mixing device 100 according to the embodiments of the present application shown in Figs. 2 to 19. Fig. 2 is a structural schematic diagram of a part of the structure of a smart toilet installed with the mixing device 100. The mixing device 100 according to the embodiments of the present application can be installed in a smart toilet, a washbasin, a vegetable washing basin, and other kitchen and bathroom equipment that need a foam output device to output foam. The mixing device 100 is used to form a mixed liquid of water and foam liquid. The mixing device 100 works in cooperation with a foam assembly to make the water surface form a foam layer. For example, the mixing device 100 installed in a toilet can prevent objects falling onto the water surface inside the ceramic from splashing.

[0039] As shown in FIG. 1, the current mixing device 100' uses two water pumps 21 for extracting water and foaming liquid respectively. The use of two water pumps 21, and the low utilization rate of the water pump 21 for extracting foaming liquid, results in high manufacturing cost of the current mixing device 100'. Moreover, the direct extraction of foaming liquid by the water pump 21 may cause the foaming liquid to stick to the internal components of the water pump 21 for extracting foaming liquid due to the viscosity of the foaming liquid, resulting in failure of the water pump 21.

[0040] Some current mixing devices use one water pump to extract both water and foaming liquid, but need to set multiple fluid channels and multiple valves with complex structures in the body of the mixing device for the transportation of water and foaming liquid respectively, resulting in complex overall structure and high failure rate of the current mixing device.

[0041] The mixing device 100 provided by the embodiments of the present application, as shown in FIGS. 3 to 5, comprises a body 1, a pressure source 2, and a control valve assembly 3. The body 1 is provided with a foaming liquid containing cavity 11, a mixing cavity 12, a pressure cavity 13, a water flow inlet 14 and a first opening 15 which are in communication with the mixing cavity 12, and a second opening 16 which is in communication with the pressure cavity 13; the foaming liquid containing cavity 11 and the mixing cavity 12 are in communication through an openable and closable channel 17, and the mixing cavity 12 and the pressure cavity 13 are separated by a partition 4; the foaming liquid containing cavity 11 is arranged to contain foaming liquid, and the water flow inlet 14 is arranged to supply water to the mixing cavity 12; the pressure source 2 is in communication with the first opening 15 and the second opening 16, and the pressure source 2 is arranged to adjust the pressure of the pressure cavity 13 and the mixing cavity 12, so that a first pressure difference can be formed between the pressure cavity 13 and the mixing cavity 12, and a second pressure difference can be formed between the foaming liquid containing cavity 11 and the mixing cavity 12; the control valve assembly 3 is arranged in the body 1, and the control valve assembly 3 is arranged to control the opening and closing of the channel 17; and the control valve assembly 3 is arranged to be actuated by the first pressure difference to open the channel 17, so that the foaming liquid in the foaming liquid containing cavity 11 can flow to the mixing cavity 12 under the drive of the second pressure difference.

[0042] Specifically, the mixing device 100 of the embodiments of the present application is arranged such that the pressure source 2 is in communication with the first opening 15 of the mixing cavity 12 and the second opening 16 of the pressure cavity 13 respectively, so that a first pressure difference (the first pressure difference is a positive pressure difference) can be formed between the pressure cavity 13 and the mixing cavity 12, and a second pressure difference (the second pressure difference is a positive pressure difference) can be formed between the foaming liquid containing cavity 11 and the mixing cavity 12. Moreover, the control valve assembly 3 is actuated by the first pressure difference to open the channel 17 between the foaming liquid containing cavity 11 and the mixing cavity 12, and the foaming liquid enters the mixing cavity 12 through the opened channel 17 under the drive of the second pressure difference. The foaming liquid entering the mixing cavity 12 mixes with the water entering the mixing cavity 12 from the water flow inlet 14, and the mixture of the foaming liquid and the water in the mixing cavity 12 is used to form foam.

[0043] Thus, the liquid mixing device 100 of the embodiment of the present application can deliver water and foaming liquid to the mixing chamber 12 by using one pressure source 2, without the need to set two water pumps for pumping water and foaming liquid respectively, so that the structure design of the liquid mixing device 100 of the embodiment of the present application is simplified, and the manufacturing cost is reduced. Moreover, the foaming liquid enters the mixing chamber 12 through the channel 17, and the water enters the mixing chamber 12 through the water inflow port 14 of the mixing chamber 12, so that the liquid mixing device 100 of the embodiment of the present application only needs to set one channel 17 inside the body 1, and can deliver water and foaming liquid into the mixing chamber 12, without the need to set multiple fluid channels with complex structure inside the body 1 for delivering water and foaming liquid to the mixing chamber 12, so that the structure design and manufacturing process of the fluid channels inside the body 1 of the liquid mixing device 100 for delivering water and foaming liquid are simplified.

[0044] In other words, the liquid mixing device 100 of the embodiment of the present application can realize the mixing function of both foaming liquid and water by setting one pressure source 2 and one channel 17 inside the body 1 of the liquid mixing device 100, so that the structure design of the liquid mixing device 100 of the embodiment of the present application is simplified, the manufacturing cost is reduced, and the failure rate is low.

[0045] Moreover, in the liquid mixing device 100 of the embodiment of the present application, the pressure source 2 is in communication with the first opening 15 of the mixing chamber 12 and the second opening 16 of the pressure chamber 13 respectively, and the fluid in the mixing chamber 12 is water or the mixture of water and foaming liquid (the foaming liquid has been diluted), so that the pressure source 2 does not directly contact the viscous foaming liquid, and the problem that the internal components of the pressure source 2 are stuck by the viscous foaming liquid and fail is avoided, and the service life of the pressure source 2 and the liquid mixing device 100 is improved. In an exemplary embodiment, as shown in FIGS. 4 and 6-8, one end of the channel 17 in communication with the foaming liquid containing chamber 11 is provided with a first water stop 171; the control valve assembly 3 includes a first control valve, which is arranged to at least one of displace and deform (i.e. only displace, or only deform, or displace and deform) under the drive of the first pressure difference, to open or close the first water stop 171.

[0046] One end of the channel 17 in communication with the mixing chamber 12 is provided with a second water stop 172; the control valve assembly 3 includes a second control valve, which includes a partition 4 arranged to at least one of displace and deform (i.e. only displace, or only deform, or displace and deform) under the drive of the first pressure difference, to open or close the second water stop 172.

[0047] Specifically, the mixing device 100 of the embodiment of the present application, by setting the first water stop 171 and the first control valve in the foaming liquid containing cavity 11, and setting the second water stop 172 and the second control valve in the mixing cavity 12, so that the channel 17 for conveying the foaming liquid is provided with two open-close valves, so that the mixing device 100 can accurately control the mixing process of the water and the foaming liquid, and the mixing device 100 can accurately control the process of extracting the mixed liquid for foaming, which is conducive to preventing the mixed liquid in the mixing cavity 12 from flowing back to the foaming liquid containing cavity 11.

[0048] It can be understood that the mixing device 100 of the embodiment of the present application can also be provided with only the first water stop 171 at one end of the channel 17 communicating with the foaming liquid containing cavity 11, so that the first control valve at least one of displacement and deformation (i.e. only displacement, or only deformation, or displacement and deformation) occurs under the driving of the first pressure difference, to open or close the first water stop 171, and also can realize the effect that the foaming liquid flows into the mixing cavity 12 under the joint action of the first pressure difference driving and the first control valve action. The first control valve can be provided with an elastic member, a deformable member structure, so as to open and close the first water stop 171.

[0049] In an exemplary embodiment, as shown in FIGS. 4 and 5, the first control valve includes a push rod 31 and an elastic member 32, the push rod 31 is provided in the channel 17, the push rod 31 protrudes from one end of the first water stop 171 and is provided with a water stop cover plate 311, and the elastic member 32 is arranged to abut against the water stop cover plate 311 and the body 1 respectively. The push rod 31 is arranged to be driven by the first pressure difference and the elastic member 32 to move the water stop cover plate 311, so as to open and close the first water stop 171.

[0050] The water stop cover plate 311 and the first water stop 171 are provided with a water stop pad 33.

[0051] Specifically, the first control valve is provided with a push rod 31 and an elastic member 32, which has a simple structure design and is easy to manufacture and adjust. The push rod 31 is provided in the channel 17, and the channel 17 has a guiding effect on the movement of the push rod 31 in addition to the flow of the foaming liquid.

[0052] The water stop pad 33 between the water stop cover plate 311 and the first water stop 171 has the effect of sealing the first water stop 171, so that the liquid in the mixing cavity 12 and the channel 17 can be prevented from flowing back to the foaming liquid containing cavity 11, affecting the liquid output effect of the mixing device 100.

[0053] When the first pressure difference is greater than the elastic member 32 pushing force on the water stop cover plate 311, the push rod 31 will move to the foam liquid containing cavity 11 direction, the first water stop 171 is opened, so that the foam liquid in the foam liquid containing cavity 11 can enter the first water stop 171 into the channel 17 inside; when the first pressure difference is less than the elastic member 32 pushing force on the water stop cover plate 311, the push rod 31 will move to the mixing cavity 12 direction, until the water stop cover plate 311 or the water stop pad 33 closes the first water stop 171, at this time the first water stop 171 is closed, the foam liquid in the foam liquid containing cavity 11 stops flowing into the channel 17 inside.

[0054] In an exemplary embodiment, as shown in FIGS. 4, 5 and 10, the end of the push rod 31 penetrating out of the first water stop 171 is provided with an annular groove 312, the annular groove 312 is arranged on the side of the water stop cover plate 311 facing the first water stop 171, and the water stop pad 33 is installed in the annular groove 312.

[0055] Specifically, the annular groove 312 is used to accommodate and limit the water stop cover plate 311, so that the connection between the water stop cover plate 311 and the push rod 31 is firm and stable. In an exemplary embodiment, the water stop pad 33 installed in the annular groove 312 is arranged in interference fit with the push rod 31.

[0056] In an exemplary embodiment, as shown in FIGS. 4, 5 and 10, the side of the water stop cover plate 311 away from the first water stop 171 is provided with a support portion 313, and the elastic member 32 is a spring, one end of the spring is sleeved outside the support portion 313 and abuts against the water stop cover plate 311.

[0057] Specifically, the elastic member 32 is arranged as a spring, the spring structure is simple in design and adjustment, and the manufacturing cost is low. One end of the spring is sleeved outside the support portion 313, so that the support portion 313 has a guiding and limiting effect on the spring.

[0058] In an exemplary embodiment, as shown in FIG. 10, the push rod 31 is provided with circumferentially distributed ribs, the ribs extend along the axial direction of the push rod 31, and flow guide grooves are formed between the ribs.

[0059] Specifically, the flow guide grooves have the effect of guiding and accelerating the fluid flow into the channel 17. The circumferentially distributed ribs can guide the movement of the push rod 31 inside the channel 17, and prevent the push rod 31 from being deflected when moving along the axial direction of the push rod 31.

[0060] In an exemplary embodiment, as shown in FIG. 4, FIG. 5 and FIG. 11, the partition 4 comprises a fixed portion 41 and a deformable portion 42, the deformable portion 42 being a deformable diaphragm having a ring-shaped protrusion 421 at the edge, and the fixed portion 41 being connected to the radially outer end of the ring-shaped protrusion 421 and being arranged to be fixedly connected to the body 1.

[0061] The deformable portion 42 is arranged to be capable of being deformed under the driving of the first pressure difference and the pushing force of the push rod 31 protruding from one end of the second water stop 172, so as to open and close the second water stop 172.

[0062] Specifically, in addition to having the function of separating the mixing chamber 12 and the pressure chamber 13, the partition 4 also has the function of opening and closing the second water stop 172. The partition 4 is arranged to comprise a deformable diaphragm having a ring-shaped protrusion 421 at the edge, and the ring-shaped protrusion 421 is capable of increasing the deformation amount of the partition 4.

[0063] The push rod 31 is provided with an elastic member 32 at the end close to the foaming liquid containing chamber 11, so that the push rod 31 is subjected to the elastic deformation of the elastic member 32, and the push rod 31 has a tendency to move towards the pressure chamber 13. When the pushing force of the first pressure difference on the deformable portion 42 is greater than the pushing force of the push rod 31 on the deformable portion 42, the deformable portion 42 will produce a bending deformation of deflection towards the mixing chamber 12 side, and the push rod 31 will move towards the foaming liquid containing chamber 11 under the pushing of the deformable portion 42, until the deformable portion 42 seals and closes the second water stop 172, at which time the liquid in the channel 17 cannot flow into the mixing chamber 12. When the pushing force of the first pressure difference on the deformable portion 42 is less than the pushing force of the push rod 31 on the deformable portion 42, the deformable portion 42 will produce a bending deformation of deflection towards the pressure chamber 13 side, and the push rod 31 will move towards the pressure chamber 11, and the deformable portion 42 opens the second water stop 172, at which time the liquid in the channel 17 flows into the mixing chamber 12.

[0064] In the switching process from closing and sealing the second water stop 172 to opening the second water stop 172, the deformable portion 42 will produce a bending deformation of deflection towards the pressure chamber 13 side, so that the volume of the mixing chamber 12 increases, and the mixing chamber 12 forms a negative pressure, and the negative pressure condition of the mixing chamber 12 is conducive to the flow of the liquid in the channel 17 towards the mixing chamber 12.

[0065] In an exemplary embodiment, as shown in FIG. 3, the pressure source 2 comprises a water pump 21 and a pipeline 22, the water pump 21 comprises a water suction port 211 and a water injection port 212, and the pipeline 22 comprises a first pipeline 221 and a second pipeline 222, the water suction port 211 is communicated with the first opening 15 through the first pipeline 221, and the water injection port 212 is communicated with the second opening 16 through the second pipeline 222.

[0066] Specifically, the water suction port 211 of the water suction pump 21 is communicated with the first opening 15 of the mixing chamber 12 through the first pipeline 221, and the water injection port 212 of the water suction pump 21 is communicated with the second opening 16 of the pressure chamber 13 through the second pipeline 222, so that the water suction pump 21 extracts the fluid from the mixing chamber 12 and delivers the fluid to the pressure chamber 13, thereby forming a positive pressure difference between the pressure chamber 13 and the mixing chamber 12. The number of the first pipeline 221 and the second pipeline 222 is not limited to one, and can be multiple.

[0067] It can be understood that the pressure source 2 can be a water suction pump 21, and can also be an air pump. By means of the air pump, air is extracted from the mixing chamber 12 and delivered to the pressure chamber 13, so that a positive pressure difference is formed between the pressure chamber 13 and the mixing chamber 12, and a positive pressure difference is formed between the foaming liquid containing chamber 11 and the mixing chamber 12.

[0068] In an exemplary embodiment, as shown in FIGS. 3 and 18, the pressure chamber 13 is provided with a mixed liquid outlet 131 for outputting the mixed liquid of water and foaming liquid from the body 1.

[0069] Specifically, the water suction pump 21 is communicated with both the mixing chamber 12 and the pressure chamber 13, the mixed liquid of water and foaming liquid extracted from the mixing chamber 12 by the water suction pump 21 is delivered into the pressure chamber 13, and then is discharged to the outside of the body 1 through the mixed liquid outlet 131 for forming foam. It can be understood that the mixed liquid outlet 131 can also be arranged on the wall surface of the mixing chamber 12, and the mixed liquid of water and foaming liquid can also be outputted. In the embodiment shown in FIG. 18, since the pressure chamber 13 is located on one side of the body 1, the mixed liquid outlet 131 is arranged on the wall surface of the pressure chamber 13, which is convenient for pipeline arrangement.

[0070] FIGS. 12 to 16 sequentially show the working process of the mixing device 100 according to an embodiment of the present application. FIG. 12 is a sectional view of the mixing device 100 according to an embodiment of the present application when the water suction pump 21 is not working, FIG. 13 is a sectional view of the mixing device 100 when the water suction pump 21 starts working, FIG. 14 is a sectional view of the mixing device 100 when the water suction pump 21 continues to work for a period of time, FIG. 15 is a sectional view of the mixing device 100 at the moment when the water suction pump 21 stops working, and FIG. 16 is a sectional view of the mixing device 100 when the water suction pump 21 stops working for a period of time. In FIGS. 12 to 16, represents foaming liquid, represents water, represents mixed liquid of foaming liquid and water. The working process of the mixing device 100 according to the embodiment of the present application is described in detail below.

[0071] As shown in FIG. 12, when the water pump 21 is not working, the mixing device 100 is in a reset state, the elastic member 32 is in a compressed state, the elastic restoring force of the elastic member 32 acts on the water stop cover plate 311 of the push rod 31, the push rod 31 drives the water stop pad 33 to move to one side of the pressure chamber 13, the water stop pad 33 presses on the first water stop port 171, and the water stop pad 33 blocks the first water stop port 171. At this time, the first water stop port 171 is closed, the foaming liquid containing cavity 11 and the mixing cavity 12 are not communicated, the foaming liquid containing cavity 11 stores foaming liquid, the partition piece 4 is in a free state, the partition piece 4 is in contact or not in contact with the push rod 31, and there is no thrust force between the partition piece 4 and the push rod 31.

[0072] As shown in FIG. 13, when the water pump 21 starts to work, the water suction port 211 of the water pump 21 sucks water in the mixing cavity 12 through the first opening 15 of the mixing cavity 12, so that the external water storage member (such as a water tank) inputs water into the mixing cavity 12 through the water inlet 14 of the mixing cavity 12, the water jet port 212 of the water pump 21 inputs water into the pressure chamber 13 through the second opening 16 of the pressure chamber 13, and a first positive pressure difference is formed between the pressure chamber 13 and the mixing cavity 12.

[0073] The fixed part 41 of the partition piece 4 is fixedly connected to the body 1, the middle region of the deformable part 42 of the partition piece 4 is bent and deformed to one side of the mixing cavity 12 under the drive of the first pressure difference, and the middle region of the deformable part 42 abuts against one end of the push rod 31 protruding from the second water stop port 172. The deformable part 42 pushes the push rod 31 to move to one side of the foaming liquid containing cavity 11 against the elastic force of the elastic member 32, the water stop cover plate 311 and the water stop pad 33 are separated from the first water stop port 171, so that the first water stop port 171 is opened. At this time, the deformable part 42 does not abut against the end face of the second water stop port 172, and the second water stop port 172 is in an open state, so that the foaming liquid containing cavity 11 and the mixing cavity 12 are communicated through the channel 17.

[0074] The water pump 21 sucks water in the mixing cavity 12, so that a second positive pressure difference is formed between the foaming liquid containing cavity 11 and the mixing cavity 12, so that the foaming liquid in the foaming liquid containing cavity 11 can enter the first water stop port 171 and flow into the channel 17. At this time, the second water stop port 172 is in an open state, and the foaming liquid continues to enter the mixing cavity 12. The foaming liquid entering the mixing cavity 12 is mixed with the water entering from the water inlet 14, and the water pump 21 can suck the mixed liquid of water and foaming liquid for subsequent formation of foam.

[0075] The foaming liquid in the mixed liquid drawn by the water pump 21 is diluted by water, so the internal components of the water pump 21 will not be stuck by the viscous foaming liquid and fail.

[0076] As shown in Fig. 14, when the water pump 21 continues to work for a period of time, the deformable portion 42 of the partition 4 continues to bend and deform towards the mixing chamber 12 until the deformable portion 42 abuts against the end face of the second water stop 172 and blocks the second water stop 172. At this time, the second water stop 172 is closed, and the foaming liquid containing chamber 11 and the mixing chamber 12 are not connected, so the foaming liquid in the foaming liquid containing chamber 11 cannot be affected by the negative pressure generated by the water pump 21 drawing water in the mixing chamber 12, and the flow of the foaming liquid stops.

[0077] As shown in Fig. 15, when the water pump 21 stops working, the fluid flow in the mixing chamber 12 and the pressure chamber 13 loses the power source, and the first pressure difference between the mixing chamber 12 and the pressure chamber 13 gradually disappears. There is no pressure difference on both sides of the deformable portion 42 of the partition 4, and the deformable portion 42 rebounds under the action of its own deformation restoring force, and the second water stop 172 opens. The end of the push rod 31 inserted into the mixing chamber 12 loses the pushing force of the deformable portion 42, and the push rod 31 moves to the side of the pressure chamber 13 under the elastic force of the elastic member 32. The water stop cover plate 311 and the water stop pad 33 have not abutted against the end face of the first water stop 171, and the first water stop 171 is in an open state. In this way, the foaming liquid containing chamber 11 and the mixing chamber 12 are connected.

[0078] Under the influence of the rebound of the deformable portion 42, the volume of the mixing chamber 12 increases, and the mixing chamber 12 forms a negative pressure, which will suck the foaming liquid in the foaming liquid containing chamber 11, and the mixing chamber 12 will also suck water in the external water storage member through the water inlet 14, and the mixing chamber 12 will form a mixed liquid of water and foaming liquid. At this time, the amount of foaming liquid drawn by the mixing chamber 12 is much less than that when the water pump 21 is working.

[0079] As shown in Fig. 16, after the water pump 21 stops working for a few seconds, the deformable portion 42 completely restores to the original state, and the elastic member 32 pushes the push rod 31 to move to the side of the pressure chamber 13 until the water stop cover plate 311 and the water stop pad 33 completely block the first water stop 171, and the first water stop 171 is closed, and the foaming liquid containing chamber 11 and the mixing chamber 12 are not connected.

[0080] It can be seen that the liquid mixing device 100 of the embodiment of the application can control the liquid mixing working process of the liquid mixing device 100 through the interaction of the first water stop 171, the second water stop 172, the push rod 31, the elastic member 32 and the partition 4, and the suction action of the water pump 21. After the water pump 21 stops working, the first water stop 171 can be sealed by the water stop pad 33, so that the liquid can be prevented from flowing back to the foaming liquid containing cavity 11, and the normal output of the mixed liquid of the liquid mixing device 100 is ensured. At the moment when the water pump 21 stops working, the deformable part 42 rebounds, the second water stop 172 is switched from the sealing state to the open state, the first water stop 171 is in the open state, and the mixed cavity 12 can also suck a part of the foaming liquid, so that the amount of the foaming liquid sucked by the mixed cavity 12 is increased.

[0081] In an exemplary embodiment, as shown in FIG. 17, the mixed cavity 12 includes a first cavity 121, a second cavity 122, a third cavity 123 and a fourth cavity 124. The first cavity 121 is communicated with the foaming liquid containing cavity 11 through the channel 17, and the first cavity 121 and the pressure cavity 13 are separated by the partition 4. The second cavity 122 is communicated with the first cavity 121, and the second cavity 122, the third cavity 123 and the fourth cavity 124 are communicated with each other through the communication ports 125. The water inlet 14 is communicated with the third cavity 123, and the first opening 15 is communicated with the fourth cavity 124.

[0082] Specifically, as shown in FIG. 17, the mixed cavity 12 is provided with multiple chambers, so that the capacity of the mixed cavity 12 can be increased. In the embodiment of the liquid mixing device 100 shown in FIG. 17, the volume of the foaming liquid containing cavity 11 is larger than that of the pressure cavity 13. Thus, in the process of one action cycle of the push rod 31 and the partition 4 caused by the working of the water pump 21, more mixed liquid of water and foaming liquid can be formed in the mixed cavity 12.

[0083] The mixed cavity 12 is provided with multiple chambers including the first cavity 121, the second cavity 122, the third cavity 123 and the fourth cavity 124, and the communication ports 125 with different flow areas are arranged between the multiple chambers, so that the volume ratio range of the mixture of water and foaming liquid is increased, and mixed liquid with different concentrations of foaming liquid is obtained.

[0084] In the embodiment shown in FIG. 17, the mixed cavity 12 is provided with four chambers. In other exemplary embodiments, the number of chambers of the mixed cavity 12 is two, three, five or more.

[0085] In an exemplary embodiment, as shown in FIG. 17, multiple communication ports 125 are arranged between the second cavity 122 and the fourth cavity 124, and the flow areas of the multiple communication ports 125 are different. The flow area of the communication port 125 between the third cavity 123 and the fourth cavity 124 is different from that of the communication port 125 between the third cavity 123 and the second cavity 122.

[0086] In other words, the communication ports 125 include first communication ports 1251, second communication ports 1252, and third communication ports 1253. The second cavity 122 and the fourth cavity 124 are communicated through the first communication ports 1251, the number of the first communication ports 1251 is multiple, and the flow areas of the multiple first communication ports 1251 are different. The third cavity 123 and the fourth cavity 124 are communicated through the second communication ports 1252, and the third cavity 123 and the second cavity 122 are communicated through the third communication ports 1253. The flow areas of the second communication ports 1252 and the third communication ports 1253 are different.

[0087] Specifically, in the embodiment shown in FIG. 17, two first communication ports 1251 are provided between the second cavity 122 and the fourth cavity 124. In other exemplary embodiments, the number of the first communication ports 1251 between the second cavity 122 and the fourth cavity 124 is set to three, four, or more.

[0088] The working process of the mixing cavity 12 of the embodiment shown in FIG. 17 is described below.

[0089] When the water pump 21 starts to work, the mixing cavity 12 forms a negative pressure, and the foaming liquid in the foaming liquid containing cavity 11 enters the first cavity 121 through the channel 17. The foaming liquid enters the second cavity 122 from the first cavity 121, and the second cavity 122 occupies most of the space of the mixing cavity 12. After the foaming liquid is sucked into the first cavity 121, it is quickly dissolved, and the solution in the second cavity 122 is gradually and uniformly dissolved. In the second cavity 122, the third cavity 123, and the fourth cavity 124, the concentration of the foaming liquid in the second cavity 122 is higher.

[0090] Under the action of the negative pressure of the mixing cavity 12 caused by the water pump 21, the water in the external water storage member is sucked into the third cavity 123 from the water inlet 14. The second communication ports 1252 are provided between the third cavity 123 and the fourth cavity 124, and the third communication ports 1253 are provided between the third cavity 123 and the second cavity 122. The flow areas of the second communication ports 1252 and the third communication ports 1253 are different. In an embodiment of the present application, the flow area of the second communication ports 1252 is larger than that of the third communication ports 1253. The water in the third cavity 123 is divided into two flow paths and flows into the second cavity 122 and the fourth cavity 124, respectively. Most of the liquid in the third cavity 123 flows into the fourth cavity 124 through the second communication ports 1252. The concentration of the foaming liquid in the third cavity 123 is low.

[0091] Two first communication ports 1251 are provided between the fourth chamber 124 and the second chamber 122, and the flow areas of the two first communication ports 1251 are different. The liquid in the second chamber 122 contains high-concentration foaming liquid, and the liquid in the second chamber 122 flows into the fourth chamber 124 from the two first communication ports 1251 respectively. The fourth chamber 124 is connected to three flows through the first communication port 1251, the second communication port 1252 and the third communication port 1253 respectively.

[0092] Specifically, the flow of the liquid flowing into the fourth chamber 124 from the third chamber 123 through the second communication port 1252 is large, and the liquid contains low-concentration foaming liquid; the flow of the liquid flowing into the fourth chamber 124 from the second chamber 122 through the first communication port 1251 with a larger flow area is moderate, and the liquid contains high-concentration foaming liquid; the flow of the liquid flowing into the fourth chamber 124 from the second chamber 122 through the other first communication port 1251 is small, and the liquid contains high-concentration foaming liquid. The three flows rotate and mix in the fourth chamber 124, and are finally pumped away from the pumping port 211 by the water pump 21 through the first opening 15.

[0093] After the water pump 21 operates for a period of time, the flow of the three flows in the fourth chamber 124 tends to be stable. At the position of the third communication port 1253 between the second chamber 122 and the third chamber 123, the concentration of the foaming liquid decreases rapidly, and the liquid flowing into the fourth chamber 124 from the second chamber 122 through both the third communication port 1253 and the second communication port 1252 contains low-concentration foaming liquid. At the position of the first communication port 1251 with a larger flow area between the second chamber 122 and the fourth chamber 124, the concentration of the foaming liquid also decreases rapidly. At the position of the first communication port 1251 with a smaller flow area between the second chamber 122 and the fourth chamber 124, the flow is low, the foaming liquid is diluted slowly, the concentration of the foaming liquid at this position changes little, and the concentration of the foaming liquid in the fourth chamber 124 still meets the requirements of the user, thereby ensuring the foaming quality.

[0094] It can be seen that the concentration of the foaming liquid at the position of the first communication port 1251 with a smaller flow area between the second chamber 122 and the fourth chamber 124 is stable, which is beneficial to ensure that the concentration of the foaming liquid meets the requirements of the user when the liquid mixing device 100 works for a long time.

[0095] In an exemplary embodiment, as shown in FIGS. 4 and 5, the body 1 includes an upper cover 18, a shell 19 and a lower cover 1-10 connected in sequence, the channel 17 is arranged in the shell 19, the partition 4 is arranged between the shell 19 and the lower cover 1-10, the partition 4 and the lower cover 1-10 enclose the pressure chamber 13, the upper cover 18 is connected to the shell 19 away from the lower cover 1-10, and the upper cover 18 and the shell 19 enclose the foaming liquid containing chamber 11.

[0096] The first opening 15 and the water inlet 14 are arranged on the shell 19, and the second opening 16 is arranged on the lower cover 1-10.

[0097] Specifically, the body 1 is arranged in a split structure, which facilitates the processing and manufacturing of the body 1 and facilitates the operator to assemble the push rod 31, the elastic member 32 and the partition 4 into the body 1.

[0098] In an exemplary embodiment, as shown in FIG. 4, a sealing member 5 is arranged at the connection between the upper cover 18 and the shell 19.

[0099] Specifically, the sealing member 5 is arranged between the upper cover 18 and the shell 19, which can prevent the foaming liquid in the foaming liquid containing cavity 11 from leaking to the outside of the body 1.

[0100] The embodiment of the present application provides a foaming device, as shown in FIGS. 18 and 19, which comprises the liquid mixing device 100 according to any one of the above exemplary embodiments, further comprises a water storage member (not shown in the figure) and a foaming assembly (not shown in the figure), the water storage member is in communication with the water inlet 14 of the body 1 and is arranged to provide water for the mixing cavity 12; the foaming assembly is in communication with the mixing cavity 12 of the body 1 and is arranged to form foam from the mixed liquid of water and foaming liquid output from the mixing cavity 12.

[0101] Specifically, the foaming device provided by the embodiment of the present application comprises the liquid mixing device 100 according to any one of the above exemplary embodiments, and thus has the structural features and advantages of the liquid mixing device 100 according to any one of the above exemplary embodiments, which will not be described herein.

[0102] The embodiment of the present application provides a liquid outlet device, which comprises the foaming device according to the above exemplary embodiments.

[0103] Specifically, the liquid outlet device provided by the embodiment of the present application comprises the foaming device according to the above exemplary embodiments, and thus has the structural features and advantages of the foaming device and the liquid mixing device 100 according to the above exemplary embodiments, which will not be described herein.

[0104] In some exemplary embodiments, the liquid outlet device can be arranged as a smart toilet, a vegetable washing basin, a bathtub, a washbasin or the like kitchen and bathroom equipment.

[0105] In the description of the embodiments of the present application, the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "periphery" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the structure referred to has a particular orientation, is constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0106] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0107] Although the embodiments disclosed in the present application are as described above, the content described is only the implementation adopted to facilitate the understanding of the embodiments of the present application, and is not intended to limit the embodiments of the present application. Any person skilled in the art can make any modification and change in the form and details without departing from the spirit and scope of the embodiments disclosed in the present application, but the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A mixing apparatus, comprising: The body has a foaming liquid containing cavity, a mixing cavity, a pressure cavity, a water inlet and a first opening communicating with the mixing cavity, and a second opening communicating with the pressure cavity; the foaming liquid containing cavity and the mixing cavity are connected through an openable and closable channel, and the mixing cavity and the pressure cavity are separated by a partition; The foaming liquid receiving cavity is configured to receive foaming liquid, and the water inlet is configured to supply water to the mixing cavity; A pressure source is connected to the first opening and the second opening. The pressure source is configured to adjust the pressure of the pressure chamber and the mixing chamber so that a first pressure difference can be formed between the pressure chamber and the mixing chamber, and a second pressure difference can be formed between the foaming liquid containing chamber and the mixing chamber. and A control valve assembly is disposed within the main body and configured to control the opening and closing of the channel; and the control valve assembly is configured to operate under the drive of the first pressure difference to open the channel, so that the foaming liquid in the foaming liquid receiving cavity can flow to the mixing cavity under the drive of the second pressure difference.

2. The mixing apparatus according to claim 1, wherein, The channel is provided with a first water stop at one end that connects to the foaming liquid receiving cavity; the control valve assembly includes a first control valve, which is configured to be able to undergo at least one of displacement and deformation under the drive of the first pressure difference, so as to open or close the first water stop. The channel is provided with a second water stop at one end of the mixing chamber; the control valve assembly includes a second control valve, the second control valve includes the separator, the separator is configured to be able to undergo at least one of displacement and deformation under the drive of the first pressure difference, so as to open or close the second water stop.

3. The mixing apparatus according to claim 2, wherein, The first control valve includes a push rod and an elastic element. The push rod passes through the channel, and a water-stop cover plate is provided at one end of the push rod that protrudes from the first water-stop port. The elastic element is configured to abut against the water-stop cover plate and the body respectively. The push rod is configured to drive the water-stop cover plate to move under the first pressure difference and the drive of the elastic element, so as to open and close the first water-stop port. A water-stop pad is provided between the water-stop cover plate and the first water-stop outlet.

4. The mixing apparatus according to claim 3, wherein, The separator includes a fixed part and a deformable part. The deformable part is a deformable diaphragm with an annular protrusion on its edge. The radial inner end of the fixed part is connected to the radial outer end of the annular protrusion, and the fixed part is configured to be fixedly connected to the body. The deformable part is configured to deform under the drive of the first pressure difference and the thrust of the push rod protruding from the end of the second water stop, so as to open and close the second water stop.

5. The mixing apparatus according to any one of claims 1 to 4, wherein, The pressure source includes a water pump and a pipeline. The water pump includes a pumping port and a spraying port. The pipeline includes a first pipeline and a second pipeline. The pumping port is connected to the first opening through the first pipeline, and the spraying port is connected to the second opening through the second pipeline.

6. The mixing apparatus according to claim 5, wherein, The pressure chamber is provided with a mixture outlet, which is used to output a mixture of water and foaming liquid from the body.

7. The mixing apparatus according to any one of claims 1 to 4, wherein, The mixing chamber includes a first chamber, a second chamber, a third chamber, and a fourth chamber. The first chamber is connected to the foaming liquid containing chamber through the channel, and the first chamber and the pressure chamber are separated by the partition. The second cavity is connected to the first cavity, and the second cavity, the third cavity, and the fourth cavity are connected to each other through a communication port; the water inlet is connected to the third cavity, and the first opening is connected to the fourth cavity.

8. The mixing apparatus according to claim 7, wherein, A plurality of communication ports are provided between the second cavity and the fourth cavity, and the flow area of ​​the plurality of communication ports is different; the flow area of ​​the communication port between the third cavity and the fourth cavity is different from that of the communication port between the third cavity and the second cavity.

9. The mixing apparatus according to any one of claims 1 to 4, wherein, The main body includes an upper cover, a housing, and a lower cover connected in sequence. The channel is disposed in the housing. The partition is disposed between the housing and the lower cover. The partition and the lower cover enclose the pressure chamber. The upper cover is connected to the end of the housing away from the lower cover. The upper cover and the housing enclose the foaming liquid receiving chamber. Both the first opening and the water inlet are located in the housing, and the second opening is located in the lower cover.

10. A foaming device, comprising a mixing device as described in any one of claims 1 to 9, further comprising a water storage component and a foaming component, the water storage component being connected to a water inlet of the body and configured to supply water to the mixing chamber; the foaming component being connected to the mixing chamber of the body and configured to form foam from a mixture of water and foaming liquid output from the mixing chamber.

11. A liquid dispensing device, comprising the foaming device as described in claim 10.

Images