A mixing device and method for a foaming liquid, a foaming system and a toilet

Abstract

The application discloses a foaming liquid mixing device and method, a foaming system and a closestool. The foaming liquid mixing device comprises a water inlet structure, a mixed liquid outlet, a mixing cavity, a foaming agent storage cavity and a liquid pumping pump, and further comprises a plurality of dilution cavities which are connected in sequence and constitute a multi-stage dilution structure. The water inlet structure is connected with the first-stage dilution cavity and the last-stage dilution cavity of the multi-stage dilution structure. The inlet of the liquid pumping pump is connected with the foaming agent outlet of the foaming agent storage cavity. The outlet of the liquid pumping pump is connected with the foaming agent inlet of the first-stage dilution cavity. The last-stage dilution cavity is connected with the mixing cavity, and the mixing cavity is connected with the mixed liquid outlet. The foaming agent can be diluted in multiple stages during mixing with water, so that the foaming frequency can be increased under the same foaming agent usage, waste can be avoided, and the foaming agent can be uniformly mixed with water, so that the foaming effect can be ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foaming, in particular to a foaming liquid mixing device and method, a foaming system and a toilet. BACKGROUND

[0002] In actual use, the liquid in the toilet is easily splashed by the falling excrement, causing the user's body to be contaminated. Meanwhile, the excrement is exposed before being flushed away, and the odor is easily emitted and difficult to remove, which brings inconvenience to the user. Therefore, a toilet with a foaming system appears on the market, which uses a large amount of foam generated by the foaming system to cover the water seal surface of the toilet, effectively solving the problems of splashing liquid by falling excrement and odor emission. The foaming system usually includes a foaming part and a liquid mixing part. The liquid mixing part is to mix the foaming agent into the mixing chamber with the water entering the mixing chamber to form a foaming liquid, and output the foaming liquid to the foaming part by the water thrust. The existing liquid mixing part uses a liquid pump to extract the foaming agent and directly mix it with water, and its control logic is to add foaming agent every time it is used. The single-use amount of the liquid pump is about 2-3ml, and the theoretical amount of foaming agent required for single use is about 0.1ml. The amount of 2-3ml is wasted for single use, which greatly shortens the number of uses of a bottle of foaming agent. If a liquid pump with 0.1ml precision is used, the manufacturing cost will increase. If a high-precision liquid pump is not used, the number of uses of a single bottle of foaming agent will decrease, and waste will be caused. SUMMARY

[0003] The present application provides a foaming liquid mixing device and method, a foaming system and a toilet, which can increase the number of foaming by diluting the foaming agent multiple times to avoid waste.

[0004] The technical scheme adopted by the present application to solve the technical problems is: a foaming liquid mixing device, comprising a water inlet structure, a mixed liquid outlet, a mixing chamber, a foaming agent storage chamber and a liquid pump, further comprising a plurality of dilution chambers, the plurality of dilution chambers are connected in sequence to form a multi-stage dilution structure, the water inlet structure is connected to the first-stage dilution chamber and the last-stage dilution chamber of the multi-stage dilution structure, the inlet of the liquid pump is connected to the foaming agent outlet of the foaming agent storage chamber, and the outlet of the liquid pump is connected to the foaming agent inlet of the first-stage dilution chamber; the last-stage dilution chamber is connected to the mixing chamber, and the mixing chamber is connected to the mixed liquid outlet.

[0005] Further, the flow rate of water from the water inlet structure into the last-stage dilution chamber is greater than the flow rate of water from the water inlet structure into the first-stage dilution chamber.

[0006] Further, the ratio of the volume of the first dilution chamber to the volume of the mixing chamber is greater than or equal to 2 / 1, and the ratio of the volume of the first dilution chamber to the volume of each of the remaining dilution chambers in the multi-stage dilution structure except the first dilution chamber is greater than or equal to 2 / 1.

[0007] Further, in the multi-stage dilution structure, each of the remaining dilution chambers except the first dilution chamber is connected to the dilution chamber above it through a first communication structure, and connected to the dilution chamber below it or the mixing chamber through a second communication structure; the water inlet structure is connected to the last dilution chamber through a third communication structure, and connected to the first dilution chamber through a fourth communication structure, and the first, second, third and fourth communication structures are respectively a communication port or a communication channel.

[0008] Further, in the same dilution chamber, the height of the part where the first communication structure is located is higher than the height of the part where the second communication structure is located; in the last dilution chamber, the height of the part where the third communication structure is located is higher than the height of the part where the first communication structure is located.

[0009] Further, the parts where the first and fourth communication structures are located in the first dilution chamber are respectively located on two adjacent or opposite walls of the first dilution chamber and are far away from each other; the parts where the first and second communication structures are located in the same dilution chamber are respectively located on two adjacent or opposite walls of the dilution chamber and are far away from each other; the parts where the second and third communication structures are located in the last dilution chamber are respectively located on two adjacent or opposite walls of the last dilution chamber and are far away from each other; the parts where the second communication structure and the mixed liquid outlet are located in the mixing chamber are respectively located on two adjacent or opposite walls of the mixing chamber and are far away from each other.

[0010] Further, the foaming agent inlet is located between 1 / 2 and 1 / 3 of the first dilution chamber and is close to the part where the first communication structure is located in the first dilution chamber, or the foaming agent inlet is located at the diagonal end of the first communication structure between the first dilution chamber and the dilution chamber below it.

[0011] Further, the water inlet structure includes a water inlet chamber and a water inlet port connected to the water inlet chamber, and the water inlet chamber is connected to the first dilution chamber and the last dilution chamber of the multi-stage dilution structure, or the water inlet structure includes a water inlet pipe connected to the first dilution chamber and the last dilution chamber of the multi-stage dilution structure.

[0012] Further, it further comprises a mixing box, and the water inlet port, the mixed liquid outlet, the foaming agent inlet, the water inlet structure, the mixing chamber, the plurality of dilution chambers and the foaming agent storage chamber are respectively arranged in the mixing box.

[0013] Further, the mixing box comprises a cover and a box body, the cover is connected to the upper end of the box body, and the cover and the box body enclose the mixing cavity, the dilution cavity and the foaming agent storage cavity, the cover is provided with the mixed liquid outlet and the foaming agent inlet; the water inlet structure comprises a water inlet cavity and a water inlet port connected with the water inlet cavity, the water inlet cavity is enclosed by the cover and the box body and is connected with the first dilution cavity and the last dilution cavity of the multi-stage dilution structure, and the water inlet port is arranged on the cover; or the water inlet structure comprises a water inlet pipe connected with the cover and / or the box body and connected with the first dilution cavity and the last dilution cavity of the multi-stage dilution structure.

[0014] Further, the mixing box comprises a cover and a box body, the cover is connected to the upper end of the box body, and the cover and the box body enclose the mixing cavity, the dilution cavity and the foaming agent storage cavity, the cover is provided with the mixed liquid outlet and the foaming agent inlet; the water inlet structure comprises a water inlet cavity and a water inlet port connected with the water inlet cavity, the water inlet cavity is enclosed by the cover and the box body and is connected with the first dilution cavity and the last dilution cavity of the multi-stage dilution structure, and the water inlet port is arranged on the cover; or the water inlet structure comprises a water inlet pipe connected with the cover and / or the box body and connected with the first dilution cavity and the last dilution cavity of the multi-stage dilution structure.

[0015] The application further provides a mixing method of foaming liquid, a plurality of dilution cavities are connected in sequence to form a multi-stage dilution structure, foaming agent is added into the first dilution cavity of the multi-stage dilution structure, water is injected into the first dilution cavity and the last dilution cavity of the multi-stage dilution structure each time for foaming, so that the foaming agent is diluted in multiple stages during mixing with water to form mixed liquid, the mixed liquid is output from the last dilution cavity, and foaming agent is added into the first dilution cavity when the mixed liquid is insufficient for foaming.

[0016] Further, the mixing box comprises a cover and a box body, the cover is connected to the upper end of the box body, and the cover and the box body enclose the mixing cavity, the dilution cavity and the foaming agent storage cavity, the cover is provided with the mixed liquid outlet and the foaming agent inlet; the water inlet structure comprises a water inlet cavity and a water inlet port connected with the water inlet cavity, the water inlet cavity is enclosed by the cover and the box body and is connected with the first dilution cavity and the last dilution cavity of the multi-stage dilution structure, and the water inlet port is arranged on the cover; or the water inlet structure comprises a water inlet pipe connected with the cover and / or the box body and connected with the first dilution cavity and the last dilution cavity of the multi-stage dilution structure.

[0017] Further, a predetermined amount of foaming agent is extracted by the liquid pump into the first dilution cavity each time, foaming agent is added into the first dilution cavity, and it is determined that the mixed liquid is insufficient for foaming when a predetermined foaming number is reached.

[0018] Further, the predetermined foaming number is 1-10 times, and the amount of foaming agent added each time is 1-15 ml, and the water injection time is 15-150 s each time for foaming.

[0019] The application further provides a foaming system, which comprises a foaming device for foaming and outputting foam and a foaming liquid mixing device as described above, and the mixed liquid outlet of the foaming liquid mixing device is connected to the foaming liquid inlet of the foaming device.

[0020] The present invention also provides a toilet, including the foaming system described above.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Because this invention also includes several dilution chambers, which are interconnected to form a multi-stage dilution structure, it enables multi-stage dilution of the foaming agent during mixing with water. This allows for increased foaming times with the same amount of foaming agent used, avoiding waste. Simultaneously, this invention ensures uniform mixing of the foaming agent and water, thus guaranteeing the foaming effect. Furthermore, this invention reduces the volume of the foaming agent storage chamber for the same number of foaming times, making the foaming liquid mixing device more portable.

[0023] 2. The flow rate of water entering the final dilution chamber from the water inlet structure is greater than the flow rate of water entering the first dilution chamber from the water inlet structure. This allows the first dilution chamber to dilute at a slow rate, preventing the rapid discharge of highly concentrated liquid from the first dilution chamber and thus further saving the amount of foaming agent used each time.

[0024] 3. The ratio of the volume of the first-stage dilution chamber to the volume of the mixing chamber is greater than or equal to 2 / 1, and the ratio of the volume of the first-stage dilution chamber to the volumes of all other dilution chambers in the multi-stage dilution structure is greater than or equal to 2 / 1. This ensures that the amount of liquid in the first-stage dilution chamber diffuses to other chambers in a static state, thus avoiding a decrease in the liquid concentration in the first-stage dilution chamber and resulting in waste.

[0025] 4. In the multi-stage dilution structure, all dilution chambers except the first-stage dilution chamber are connected to their preceding dilution chamber via a first connecting structure, and to their following dilution chamber or mixing chamber via a second connecting structure. The water inlet structure is connected to the final-stage dilution chamber via a third connecting structure, making the overall structure compact and small in size. Specifically, within the same dilution chamber, the height of the first connecting structure is higher than the height of the second connecting structure, preventing liquid in the higher-concentration dilution chamber from easily diffusing to the lower-concentration dilution chamber in a static state, thus avoiding a decrease in liquid concentration in the higher-concentration dilution chamber and resulting in waste. In the final-stage dilution chamber, the height of the third connecting structure is higher than the height of the first connecting structure, which improves the mixing degree of the liquid in the final-stage dilution chamber, facilitating more uniform mixing.

[0026] 5. The first and fourth connecting structures are located on adjacent or opposite walls of the first-stage dilution chamber, respectively, and are far apart from each other; the first and second connecting structures are located on adjacent or opposite walls of the same dilution chamber, respectively, and are far apart from each other; the second and third connecting structures are located on adjacent or opposite walls of the final-stage dilution chamber, respectively, and are far apart from each other; the second connecting structure and the mixture outlet are located on adjacent or opposite walls of the mixing chamber, respectively, and are far apart from each other, so that the flow path of the liquid in each dilution chamber or mixing chamber is longer, and the mixing is more uniform.

[0027] 6. The water inlet structure, the mixed liquid outlet, the foaming agent inlet, the mixing chamber, several dilution chambers, and the foaming agent storage chamber are respectively arranged in the mixing box, making the overall structure of the invention compact and convenient for installation and transportation.

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the foaming liquid mixing device and method, foaming system and toilet of the present invention are not limited to the embodiments. Attached Figure Description

[0029] Figure 1 This is an exploded view of the foaming liquid mixing device of the present invention in Embodiment 1;

[0030] Figure 2 This is a top view (perspective) of the housing of the present invention in Embodiment 1;

[0031] Figure 3 This is a cross-sectional view of the housing of the present invention, as described in Embodiment 1.

[0032] Figure 4 This is a schematic diagram of the structure of the upper cover of the present invention in Embodiment 1;

[0033] Figure 5 This is a three-dimensional structural schematic diagram of the foaming liquid mixing device of the present invention in Embodiment 1;

[0034] Figure 6 This is a schematic diagram of the operation of the foaming liquid mixing device of the present invention in Embodiment 1. Figure 1 (Cross-section);

[0035] Figure 7 This is a schematic diagram of the operation of the foaming liquid mixing device of the present invention in Embodiment 1. Figure 2 (Cross-section);

[0036] Figure 8 This is a schematic diagram of the operation of the foaming liquid mixing device of the present invention in Embodiment 1. Figure 3 (View from above);

[0037] Figure 9 This is a schematic diagram of the operation of the foaming liquid mixing device of the present invention in Embodiment 1. Figure 4 (Cross-section);

[0038] Figure 10 This is a schematic diagram of the operation of the foaming liquid mixing device of the present invention in Embodiment 1. Figure 5 (Cross-section);

[0039] Figure 11 This is a schematic diagram (top view) of the operation of the foaming liquid mixing device of the present invention in Embodiment 2;

[0040] Figure 12 This is a three-dimensional structural diagram of the box body of the present invention in Embodiment 3;

[0041] Figure 13 This is a schematic diagram of the operation of the foaming liquid mixing device of the present invention in Embodiment 4;

[0042] Among them, 1. Liquid pump, 2. Mixing tank, 21. Tank body, 211. Foaming agent storage chamber, 212. Mixing chamber, 213. Water inlet chamber, 214. First dilution chamber, 215. Final dilution chamber, 216. First connecting port, 217. Second connecting port, 218. Third connecting port, 219. First opening, 2110. Second opening, 2111. Foaming agent outlet, 2112. Internal pipeline, 22. Top cover, 221. Water inlet, 222. Foaming agent inlet, 223. Mixed liquid outlet, 224. Foaming agent addition port, 225. Atmosphere port, 3. Liquid inlet connector, 4. Liquid inlet pipe, 5. Liquid outlet pipe, 6. External pipeline, 7. Water inlet pipe. Detailed Implementation

[0043] Example 1

[0044] Please see Figures 1-10As shown, a foaming liquid mixing device of the present invention includes a structure, a mixture outlet 223, a mixing chamber 212, a foaming agent storage chamber 211, and a pump 2. It also includes several dilution chambers, which are interconnected to form a multi-stage dilution structure. The inlet structure connects to the first-stage dilution chamber 214 and the last-stage dilution chamber 215 of the multi-stage dilution structure. The inlet of the pump 2 connects to the foaming agent outlet 2111 of the foaming agent storage chamber 211, and the outlet of the pump 2 connects to the foaming agent inlet 222 of the first-stage dilution chamber 214. The mixing chamber 212 is connected to the last-stage dilution chamber 215, and the mixing chamber 212 is connected to the mixture outlet 223. The first-stage dilution chamber 214 refers to the dilution chamber in which the first stage of dilution is performed in the multi-stage dilution structure, and the last-stage dilution chamber 215 refers to the dilution chamber in which the last stage of dilution is performed in the multi-stage dilution structure. The foaming agent entering the first-stage dilution chamber 214 is gradually diluted in multiple stages under the drive of water, and finally output from the mixing chamber 212. Since the water inlet structure is also connected to the final-stage dilution chamber 215, the dilution flow rate of the mixture before the final-stage dilution chamber 215 can be relatively small, so as to effectively control the concentration and the number of foaming times. At the same time, the water entering the final-stage dilution chamber 214 ensures that the final output flow rate of the mixture is relatively large, so as to facilitate subsequent foaming. The design of the mixing chamber 212 can further improve the mixing effect of the mixture, make the liquid mix more uniform, and ensure better foaming effect.

[0045] In this embodiment, the water inlet structure includes a water inlet cavity 213 and a water inlet 221 connected to the water inlet cavity 213. The water inlet cavity 213 is connected to the first-stage dilution cavity 214 and the last-stage dilution cavity 215 of the multi-stage dilution structure.

[0046] In this embodiment, the flow rate of water entering the final dilution chamber 215 from the water inlet structure (i.e., water inlet chamber 213) is greater than the flow rate of water entering the first-stage dilution chamber 214 from the water inlet structure (i.e., water inlet chamber 213). This allows the first-stage dilution chamber 214 to dilute at a slow rate, preventing the rapid discharge of highly concentrated liquid from the first-stage dilution chamber 214, thereby further saving the amount of foaming agent used each time.

[0047] In this embodiment, the volume of the first-stage dilution chamber 214 is much larger than the volume of the mixing chamber 212, and the volume of the first-stage dilution chamber 214 is much larger than the volumes of all other dilution chambers in the multi-stage dilution structure except for the first-stage dilution chamber 214. Specifically, the ratio of the volume of the first-stage dilution chamber 214 to the volume of the mixing chamber 212 is greater than or equal to 2 / 1, and the ratio of the volume of the first-stage dilution chamber 214 to the volumes of all other dilution chambers in the multi-stage dilution structure except for the first-stage dilution chamber is greater than or equal to 2 / 1. Since there are two dilution chambers, the remaining dilution chambers are only the final-stage dilution chamber 214. This results in less liquid diffusing into other chambers in the first-stage dilution chamber 214 in a static state, avoiding waste caused by a decrease in the liquid concentration in the first-stage dilution chamber 214. The volume of the water inlet chamber 213 is also much smaller than the volume of the first-stage dilution chamber 214.

[0048] In this embodiment, in the multi-stage dilution structure, the dilution chambers other than the first-stage dilution chamber 214 are connected to their previous-stage dilution chambers via a first connecting structure, and to their next-stage dilution chambers or mixing chambers 212 via a second connecting structure; the water inlet chamber 213 is connected to the final-stage dilution chamber 215 via a third connecting structure, and the water inlet chamber 213 is connected to the first-stage dilution chamber 214 via a fourth connecting structure. The first, second, third, and fourth connecting structures are respectively connecting ports or connecting channels. Specifically, the first, second, and third connecting structures are respectively connecting ports, and for ease of distinction, they are named first connecting port 216, second connecting port 217, and third connecting port 218. The fourth connecting structure is a connecting channel, which includes a first opening 219 leading to the first-stage dilution chamber 214, a second opening 2110 leading to the water inlet chamber 213, and an external pipe 6 connecting the first opening 219 and the second opening 2110.

[0049] In this embodiment, within the same dilution chamber, the height of the first connecting structure (i.e., the first connecting port 216) is higher than the height of the second connecting structure (i.e., the second connecting port 217). This prevents liquid in the higher concentration dilution chamber from easily diffusing into the lower concentration dilution chamber in a static state, thus avoiding a decrease in liquid concentration in the higher concentration dilution chamber and resulting waste. In the final dilution chamber, the height of the third connecting structure (i.e., the third connecting port 218) is higher than the height of the first connecting structure (i.e., the first connecting port 216). The height of the mixed liquid outlet 223 is higher than the height of the second connecting structure (i.e., the second connecting port 217).

[0050] In this embodiment, the first connecting structure (i.e., the first connecting port 216) and the fourth connecting structure (i.e., the first opening 219) are located on adjacent or opposite walls of the first-stage dilution chamber, respectively, and are far apart from each other. The first connecting structure (i.e., the first connecting port 216) and the second connecting structure (i.e., the second connecting port 217) are located on adjacent or opposite walls of the same dilution chamber (any dilution chamber other than the first-stage and final-stage dilution chambers), respectively, and are far apart from each other. The second connecting structure (i.e., the second connecting port 217) and the third connecting structure (i.e., the third connecting port 218) are located on adjacent or opposite walls of the final-stage dilution chamber, respectively, and are far apart from each other. The second connecting structure (i.e., the second connecting port 217) and the mixture outlet 223 are located on adjacent or opposite walls of the mixing chamber, respectively, and are far apart from each other. This results in a longer flow path for the liquid in each dilution chamber or mixing chamber 212, leading to more uniform mixing.

[0051] In this embodiment, the number of dilution chambers is specifically two, including the first-stage dilution chamber 214 and the last-stage dilution chamber 215, but it is not limited to this. In other embodiments, the number of dilution chambers is at least three. The first connecting structure (i.e., the first connecting port 216) and the fourth connecting structure are respectively located on two adjacent cavity walls of the first-stage dilution chamber. Specifically, the fourth connecting structure (i.e., the first opening 219) is located on the bottom wall of the first-stage dilution chamber 214, and the first connecting port 216 is located on the side wall of the first-stage dilution chamber 214. The foaming agent inlet 222 is located between 1 / 2 and 1 / 3 of the first-stage dilution chamber 214, and is close to the first connecting structure (i.e., the first connecting port 21) in the first-stage dilution chamber 214, so that the first-stage dilution chamber 214 has a better dilution effect on the foaming agent. In other embodiments, the foaming agent inlet is located at the diagonal end of the first connecting structure between the first-stage dilution chamber and its next-stage dilution chamber. The foaming agent inlet 222 is located on a different cavity wall from the first opening 219 and the first connecting port 216 in the first-stage dilution chamber 214. Specifically, the foaming agent inlet 222 is located on the top wall of the first-stage dilution chamber 214. The second connecting port 217 and the third connecting port 218 of the final-stage dilution chamber 215 are specifically located on opposite side walls of the final-stage dilution chamber 215. The first connecting port 216 of the final-stage dilution chamber 215 and the first connecting port 217 and the third connecting port 218 of the first-stage dilution chamber 214 are located on a different cavity wall from the final-stage dilution chamber 215. Specifically, the first connecting port 216 of the final-stage dilution chamber 215 and the first-stage dilution chamber 214 is located on the side wall between the second connecting port 217 and the third connecting port 218. The mixture outlet 223 is located at the top of the mixing chamber 212. Specifically, the mixture outlet 223 is located on the top wall of the mixing chamber 212. Because the flow rate of water from the inlet chamber 213 into the final dilution chamber 215 is greater than the flow rate of water from the inlet chamber 213 into the first dilution chamber 214, the third connecting port 218 is larger than the first opening 219. The portion of the fourth connecting structure in the inlet chamber (i.e., the second opening 2110) is located on the bottom wall of the inlet chamber 213.

[0052] In this embodiment, the present invention also includes a mixing tank 2, wherein the water inlet 221, the mixed liquid outlet 223, the foaming agent inlet 222, the water inlet chamber 213, the mixing chamber 212, several dilution chambers, and the foaming agent storage chamber 211 are respectively disposed in the mixing tank 2, but not limited thereto. In other embodiments, the water inlet chamber, the dilution chamber, and the foaming agent storage chamber are carried by at least two separate containers.

[0053] In this embodiment, the mixing tank 2 includes an upper cover 22 and a tank body 21. The upper cover 22 is attached to the upper end of the tank body 21, and the upper cover 22 is provided with the water inlet 221, the mixed liquid outlet 223, and the foaming agent inlet 222. The tank body 21 is provided with the water inlet chamber 213, the mixing chamber 212, the dilution chamber, and the foaming agent storage chamber 211, which are open at the upper end. The water inlet chamber 213, the mixing chamber 212, the dilution chamber, and the foaming agent storage chamber 211 are respectively sealed by the upper cover 22.

[0054] In this embodiment, the invention includes an atmospheric vent 225 communicating with the foaming agent storage chamber 211, which is located on the upper cover 22. The invention also includes a foaming agent inlet 224 communicating with the foaming agent storage chamber 211, located on the upper cover 22 and connected to a liquid inlet connector 3. The liquid pump 2 is mounted outside the mixing tank 2; specifically, the liquid pump 2 is located at the bottom of the tank body 21. The inlet of the liquid pump 2 is connected to the foaming agent outlet 2111 located at the bottom of the foaming agent storage chamber 211 via an inlet pipe 4, and the outlet of the liquid pump 2 is connected to the foaming agent inlet 222 of the primary dilution chamber 214 via an outlet pipe 5.

[0055] In this embodiment, the apertures of the first opening 219 and the first connecting port 216 are 1.5 to 3 mm, respectively, to control the dilution rate of the primary dilution chamber 214, thereby controlling the number of foaming cycles.

[0056] In this embodiment, the water inlet chamber 213, the final dilution chamber 215, and the mixing chamber 212 are arranged in parallel, and the final dilution chamber 215 is located between the water inlet chamber 213 and the mixing chamber 212.

[0057] The working principle of the foaming liquid mixing device of the present invention is as follows:

[0058] In the first step, the pump 2 draws an appropriate amount of foaming agent from the foaming agent storage chamber 211 into the primary dilution chamber 214. The foaming agent diffuses freely within the primary dilution chamber 214, completing the first stage of dilution (before adding the foaming agent, the primary dilution chamber 214 contains water or a diluted mixture), resulting in a primary mixture, such as... Figure 6 , Figure 7 As shown;

[0059] The second step involves adding the foaming agent. During foaming, water is injected. The water in the inlet chamber 213 splits into two streams: one flows to the primary dilution chamber 214, and the other flows to the final dilution chamber 215. The mixture in the primary dilution chamber 214 is propelled by the water from the inlet chamber 213 and flows towards the final dilution chamber 215. Figure 7 , Figure 8As shown; water enters the final dilution chamber 215 from the higher third connecting port 218 and flows downwards, while the primary mixture enters the final dilution chamber 215 from the lower first connecting port 216, where it meets and mixes with the water to form a secondary mixture, as shown. Figure 9 As shown; the secondary mixture, propelled by water, flows into the mixing chamber 212 from the lower-positioned second connecting port 217, and after further mixing within the mixing chamber 212, is discharged through the top mixing outlet 223, as... Figure 10 As shown. This ensures the foaming agent is mixed evenly. During this process, the mixture in the first-stage dilution chamber 214 is diluted at a slow rate. After water is injected at least once (e.g., 1-9 times), when the mixture in the final-stage dilution chamber 215 is insufficient for further foaming, the foaming agent is injected again, and this cycle is repeated.

[0060] Therefore, the present invention allows for multiple uses by adding a foaming agent once, which is equivalent to adding a foaming agent once for multiple foaming processes, thereby increasing the number of times the foaming agent can be used.

[0061] Example 2

[0062] Please see Figure 11 As shown, the foaming liquid mixing device of the present invention differs from the above embodiment 1 in that: the fourth connecting structure between the water inlet chamber 213 and the first-stage dilution chamber 214 is a connecting channel, and the connecting channel is specifically a built-in pipe 2112 disposed in the mixing tank 2.

[0063] The working principle of the foaming liquid mixing device of the present invention is as described above, and will not be repeated here.

[0064] Example 3

[0065] Please see Figure 12 As shown, the foaming liquid mixing device of the present invention differs from the above embodiment 1 in that the layout of the water inlet chamber 213, the first-stage dilution chamber 214, the last-stage dilution chamber 215, and the mixing chamber 212 is different. Specifically, the water inlet chamber 213 is located between the first-stage dilution chamber 214 and the last-stage dilution chamber 215, and the layout of the water inlet chamber 213, the last-stage dilution chamber 215, and the mixing chamber 212 roughly forms an L-shape.

[0066] The working principle of the foaming liquid mixing device of the present invention is as described above, and will not be repeated here.

[0067] Example 4

[0068] Please see Figure 13As shown, the foaming liquid mixing device of the present invention differs from the above embodiments in that: the water inlet structure includes a water inlet pipe 7, which connects the first-stage dilution chamber 214 and the last-stage dilution chamber 215 of the multi-stage dilution structure. Specifically, the water inlet pipe 7 is a three-way connector, with one end serving as a water inlet for connecting to a water source, and one of the other two ends connected to the last-stage dilution chamber 215 via a third connecting structure, and the other connected to the first-stage dilution chamber 214 via a fourth connecting structure. The third and fourth connecting structures are specifically provided as connecting ports on the top cover or the housing, thus the other two ends of the water inlet pipe 7 are respectively connected to the top cover or the housing. In other embodiments, there are two water inlet pipes, with one end connected to the first-stage dilution chamber and the last-stage dilution chamber, and the other end of each pipe serving as a water inlet.

[0069] The working principle of the foaming liquid mixing device of the present invention is as described above, and will not be repeated here.

[0070] This invention discloses a method for mixing a foaming liquid, providing a plurality of dilution chambers connected sequentially to form a multi-stage dilution structure. A foaming agent is added to the first-stage dilution chamber of this multi-stage dilution structure. During each foaming process, water is injected into both the first-stage and the final-stage dilution chamber, allowing the foaming agent to undergo multi-stage dilution during mixing with water, forming a mixture. This mixture is output from the final-stage dilution chamber. When the mixture is insufficient for foaming, foaming agent is added to the first-stage dilution chamber. Specifically, after adding foaming agent to the first-stage dilution chamber, a preset number of foaming cycles is reached, at which point the mixture is deemed insufficient for foaming. The number of foaming cycles corresponds to the number of water injection cycles; simultaneously injecting water into both the first-stage and final-stage dilution chambers counts as one water injection cycle.

[0071] In this embodiment, the foaming liquid mixing method of the present invention also provides a mixing chamber, so that the mixed liquid output from the final dilution chamber enters the mixing chamber for further mixing before being output, so as to make the liquid mixing more uniform and ensure better foaming effect.

[0072] In this embodiment, the flow rate of water entering the final dilution chamber is greater than the flow rate of water entering the first dilution chamber. This allows for slow dilution in the first dilution chamber, preventing the rapid discharge of highly concentrated liquid and further reducing the amount of foaming agent used each time.

[0073] In this embodiment, a pre-set amount of foaming agent is drawn into the primary dilution chamber each time using a pump, so as to accurately control the amount of foaming agent added each time. The prerequisite for adding the foaming agent to the primary dilution chamber is that the primary dilution chamber contains water or a mixture.

[0074] In this embodiment, the preset number of foaming times is 1 to 10 times, the amount of foaming agent added each time is 1 to 15 ml, and the water injection time is 15 to 150 seconds each time foaming is performed.

[0075] The detailed workflow of the foaming liquid mixing method of the present invention is as follows:

[0076] 1) If there is water or a mixture in the primary dilution chamber, use a pump to extract a preset amount of foaming agent from the foaming agent storage chamber into the primary dilution chamber.

[0077] 2) During foaming, water is injected and divided into two streams: one stream flows to the first-stage dilution chamber and the other stream flows to the final-stage dilution chamber. This allows the foaming agent to undergo multi-stage dilution during mixing with water and then enters the mixing chamber for further mixing before being output for foaming.

[0078] 3) Repeat step 2) at least once, then return to step 1).

[0079] In this embodiment, step 3) is repeated 1-9 times. When the mixture in the final dilution chamber is insufficient for foaming, foaming agent is added to the first dilution chamber, thus returning to step 1).

[0080] The foaming liquid mixing method of the present invention can be implemented by the foaming liquid mixing device of the present invention described in the above embodiments.

[0081] A foaming system according to the present invention includes a foaming device for foaming and outputting foam, and a mixing device for foaming liquid as described in any of the above embodiments, wherein the mixing liquid outlet of the foaming liquid mixing device is connected to the foaming liquid inlet of the foaming device.

[0082] The structure, construction, and working principle of the foaming system and the mixing device for the foaming liquid of this invention are described in the preceding section and will not be repeated here.

[0083] The present invention provides a toilet comprising the foaming system described above, wherein the foaming system generates a large amount of foam that covers the water surface of the toilet, effectively solving the problems of excrement splashing liquid and odor emission.

[0084] The present invention provides a foaming liquid mixing device and method, a foaming system, and a toilet. The parts not described herein are the same as or can be implemented using existing technologies.

[0085] The above embodiments are only used to further illustrate a foaming liquid mixing device and method, foaming system and toilet of the present invention. However, the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A mixing device for foaming liquid, comprising a mixing tank, a water inlet structure, a mixed liquid outlet, and a pump, characterized in that: The mixing chamber's inner cavity is divided into at least a foaming agent storage chamber, several dilution chambers, and a mixing chamber. The several dilution chambers are interconnected to form a multi-stage dilution structure. The water inlet structure connects the first-stage dilution chamber and the last-stage dilution chamber of the multi-stage dilution structure. The inlet of the pump connects to the foaming agent outlet of the foaming agent storage chamber, and the outlet of the pump connects to the foaming agent inlet of the first-stage dilution chamber. The last-stage dilution chamber connects to the mixing chamber, allowing the mixture output from the last-stage dilution chamber to enter the mixing chamber for further mixing before being output through the mixture outlet. In the multi-stage dilution structure, all dilution chambers except the first-stage dilution chamber are connected to their previous-stage dilution chamber via a first connecting structure, and to their next-stage dilution chamber or mixing chamber via a second connecting structure. The water inlet structure is connected to the last-stage dilution chamber via a third connecting structure, and to the first-stage dilution chamber via a fourth connecting structure. Within the same dilution chamber, the height of the portion containing the first connecting structure is higher than the height of the portion containing the second connecting structure.

2. The mixing device for foaming liquid according to claim 1, characterized in that: The flow rate of water entering the final dilution chamber from the inlet structure is greater than the flow rate of water entering the first dilution chamber from the inlet structure.

3. The mixing device for foaming liquid according to claim 1, characterized in that: The ratio of the volume of the primary dilution chamber to the volume of the mixing chamber is greater than or equal to 2 / 1, and the ratio of the volume of the primary dilution chamber to the volumes of all other dilution chambers in the multi-stage dilution structure, excluding the primary dilution chamber, is greater than or equal to 2 / 1.

4. The mixing device for foaming liquid according to claim 1, characterized in that: The first connecting structure, the second connecting structure, the third connecting structure, and the fourth connecting structure are respectively connecting ports or connecting channels.

5. The mixing device for foaming liquid according to claim 4, characterized in that: In the final dilution chamber, the height of the portion containing the third connecting structure is higher than the height of the portion containing the first connecting structure.

6. The mixing device for foaming liquid according to claim 4, characterized in that: The first and fourth connecting structures are located in the first-stage dilution chamber at locations on adjacent or opposite chamber walls, respectively, and are far apart from each other. The first and second connecting structures are located in the same dilution chamber at locations on adjacent or opposite chamber walls, respectively, and are far apart from each other. The second and third connecting structures are located in the final-stage dilution chamber at locations on adjacent or opposite chamber walls, respectively, and are far apart from each other. The second connecting structure and the mixture outlet are located in the mixing chamber at locations on adjacent or opposite chamber walls, respectively, and are far apart from each other.

7. The mixing device for foaming liquid according to claim 4, characterized in that: The foaming agent inlet is located between 1 / 2 and 1 / 3 of the position of the primary dilution chamber, and close to the part of the first connecting structure in the primary dilution chamber, or the foaming agent inlet is located at the diagonal end of the first connecting structure between the primary dilution chamber and its next-level dilution chamber.

8. The mixing device for foaming liquid according to claim 7, characterized in that: The water inlet structure includes a water inlet chamber and a water inlet connected to the water inlet chamber. The water inlet chamber is connected to the first-stage dilution chamber and the last-stage dilution chamber of the multi-stage dilution structure. Alternatively, the water inlet structure includes a water inlet pipe that is connected to the first-stage dilution chamber and the last-stage dilution chamber of the multi-stage dilution structure.

9. The mixing device for foaming liquid according to claim 1, characterized in that: The mixing tank includes a top cover and a body. The top cover is attached to the upper end of the body, and the two together form the mixing chamber, dilution chamber, and foaming agent storage chamber. The top cover has a mixture outlet and a foaming agent inlet. The water inlet structure includes a water inlet chamber and a water inlet connected to the water inlet chamber. The water inlet chamber is formed by the top cover and the body, and connects to the first-stage dilution chamber and the last-stage dilution chamber of the multi-stage dilution structure. The water inlet is located on the top cover. Alternatively, the water inlet structure includes a water inlet pipe connected to the top cover and / or the body, and connects to the first-stage dilution chamber and the last-stage dilution chamber of the multi-stage dilution structure.

10. The mixing apparatus for the foaming liquid according to claim 9, characterized in that: It also includes an vent for connecting the foaming agent storage chamber, which is located on the upper cover; it also includes a foaming agent addition port for connecting the foaming agent storage chamber, which is located on the upper cover; the liquid pump is installed outside the mixing tank, the inlet of the liquid pump is connected to the foaming agent storage chamber through an inlet pipe, and the outlet of the liquid pump is connected to the primary dilution chamber through an outlet pipe.

11. A method for mixing a foaming liquid, based on the mixing apparatus for a foaming liquid as described in any one of claims 1-10, characterized in that: A plurality of dilution chambers are provided and connected one by one to form a multi-stage dilution structure. A foaming agent is added to the first-stage dilution chamber of the multi-stage dilution structure. Each time foaming is performed, water is injected into the first-stage dilution chamber and the last-stage dilution chamber of the multi-stage dilution structure, so that the foaming agent is diluted in multiple stages during the mixing process with water to form a mixture. The mixture is output from the last-stage dilution chamber. When the mixture is insufficient for foaming, foaming agent is added to the first-stage dilution chamber.

12. The method for mixing the foaming liquid according to claim 11, characterized in that: A mixing chamber is also provided, into which the mixture output from the final dilution chamber is further mixed before being output; and the flow rate of water entering the final dilution chamber is greater than the flow rate of water entering the first dilution chamber.

13. The method for mixing the foaming liquid according to claim 11 or 12, characterized in that: A preset amount of foaming agent is drawn into the primary dilution chamber each time using a pump. After adding the foaming agent into the primary dilution chamber, when the preset number of foaming times is reached, it is determined that the mixture is insufficient for foaming. The premise for adding the foaming agent into the primary dilution chamber is that there is water or a mixture in the primary dilution chamber.

14. The method for mixing the foaming liquid according to claim 13, characterized in that: The preset number of foaming cycles is 1 to 10, the amount of foaming agent added each time is 1 to 15 ml, and the water injection time is 15 to 150 seconds each time foaming is performed.

15. A foaming system, comprising a foaming device for foaming and discharging foam, characterized in that: It also includes a mixing device for the foaming liquid as described in any one of claims 1-10, wherein the mixing outlet of the mixing device is connected to the foaming liquid inlet of the foaming device.

16. A toilet, characterized in that: Includes the foaming system as described in claim 15.

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