Waterway system and water purification apparatus

Abstract

The application discloses a waterway system and a water purification device, and relates to the technical field of water purification. The waterway system has an air inlet end, a water inlet end and a water outlet end, and comprises an air inlet valve, a jet device, a booster pump and a gas mixing tank. The air inlet end and the water inlet end are communicated with the jet device, the jet device is communicated with the booster pump, and the booster pump is communicated with the water outlet end. The booster pump comprises a base, a diaphragm assembly and a pump cover. The diaphragm assembly is arranged on the base. The pump cover is connected with the base, and the pump cover is provided with a water inlet and a water outlet. A low-pressure cavity and a high-pressure cavity are formed between the pump cover and the diaphragm assembly. The low-pressure cavity is communicated with the water inlet, the high-pressure cavity is communicated with the water outlet, the volume of the low-pressure cavity is V1, the volume of the high-pressure cavity is V2, and 1.5 <= V1 / V2 <= 3 is satisfied. The booster pump can improve the air pumping efficiency of the booster pump, so that the waterway system can continuously output micro-bubble water and the user experience is improved.

Description

Technical Field

[0001] This invention relates to the field of water purification technology, and in particular to a water system and water purification equipment. Background Technology

[0002] In related technologies, microbubble water systems include a booster pump, a mixing tank, and a water outlet module. The booster pump introduces water and air into the mixing tank, where they mix to form a gas-liquid mixture. This mixture then flows into the water outlet module to form micro-nano bubbles. However, existing booster pumps have an excessively large volume ratio between their low-pressure and high-pressure chambers, meaning the low-pressure chamber is too large. This makes pumping difficult, inefficient, and weak, resulting in discontinuous microbubble water output from the water outlet module and a poor user experience. Summary of the Invention

[0003] The main objective of this invention is to propose a water system and water purification equipment, which aims to improve the pumping efficiency of the booster pump, thereby ensuring continuous microbubble water output from the water system and improving the user experience.

[0004] To achieve the above objectives, the present invention proposes a water system having an air inlet, a water inlet, and a water outlet. The water system includes an air inlet valve, an ejector, a booster pump, a first one-way valve, and a mixing tank. The ejector has a first inlet, a second inlet, and a mixing outlet. One end of the air inlet valve is connected to the air inlet, and the other end is connected to the first inlet. The second inlet is connected to the water inlet. The booster pump includes a base, a diaphragm assembly, and a pump cover. The diaphragm assembly is disposed on the base, and the pump cover is connected to the base. The system is equipped with an inlet and an outlet. The inlet is connected to the mixing outlet, and the outlet is connected to the outlet. The mixing tank is located in the flow path between the booster pump and the outlet. The first one-way valve is located in the flow path between the jet injector and the air inlet valve. A low-pressure chamber and a high-pressure chamber are formed between the pump cover and the diaphragm assembly. The low-pressure chamber is connected to the inlet, and the high-pressure chamber is connected to the outlet. The volume of the low-pressure chamber is V1, and the volume of the high-pressure chamber is V2, satisfying 1.5 ≤ V1 / V2 ≤ 3.

[0005] In one embodiment, the water system further includes an aerator located downstream of the mixing tank and connected to the water outlet.

[0006] In one embodiment, the water system further includes a pressure regulating valve located upstream of the jet injector and connected to the second inlet.

[0007] In one embodiment, the water system further includes a filter assembly disposed upstream of the pressure regulating valve for filtering the liquid; and / or,

[0008] The water system also includes an air filter element, which is located upstream of the air inlet valve and is used to filter the gas.

[0009] In one embodiment, the pump cover has a first perimeter and a second perimeter spaced apart from each other. The second perimeter is located inside the first perimeter and forms a water outlet cavity communicating with the water outlet. A water inlet cavity communicating with the water inlet is formed between the first perimeter and the second perimeter. The water inlet cavity and the diaphragm assembly enclose the low-pressure cavity, and the water outlet cavity and the diaphragm assembly enclose the high-pressure cavity.

[0010] In one embodiment, the water inlet cavity has a first sidewall, a first bottom wall, and a transition wall connecting the first sidewall and the first bottom wall, wherein the transition wall is inclined in the direction from the first perimeter to the second perimeter.

[0011] In one embodiment, the diaphragm assembly includes a diaphragm and a piston cap, the diaphragm and the piston cap enclosing a pump chamber; the extension direction of the transition wall is consistent with the extension direction of at least a portion of the outer wall surface of the piston cap.

[0012] In one embodiment, the piston cover has a plurality of protrusions on the side facing the pump cover, and the protrusions are provided with a plurality of first water passage holes connecting the low-pressure chamber and the pump chamber, and a water trough is formed between any two adjacent protrusions.

[0013] In one embodiment, the piston cover has a protrusion on the side facing the pump cover. The protrusion includes a protruding sidewall and a protruding top wall connected together. The protruding top wall has a mounting hole for mounting the umbrella valve of the diaphragm assembly. The extension direction of the transition wall is consistent with the extension direction of the protruding sidewall.

[0014] In one embodiment, the distance between the protruding sidewall and the transition wall is M1, which satisfies 1mm≤M1≤2mm.

[0015] In one embodiment, the first bottom wall is provided with a clearance groove, which is used to avoid the valve stem portion of the umbrella valve of the diaphragm assembly.

[0016] In one embodiment, the distance between the protruding top wall and the first bottom wall is set as M2, and the distance between the bottom of the relief groove and the first bottom wall is set as M3, satisfying M2 < M3.

[0017] In one embodiment, the pump cover has an outer wall surface away from the diaphragm assembly, and the outlet chamber has a second bottom wall, the distance from the second bottom wall to the outer wall surface of the pump cover being less than the distance from the first bottom wall to the outer wall surface of the pump cover.

[0018] In one embodiment, a positioning wall is further provided between the transition wall and the first side wall, the positioning wall having a limiting step surface for abutting against the piston cover.

[0019] In one embodiment, the geometric centers of the first perimeter and the second perimeter coincide, the distance between the geometric center and the wall of the first perimeter is set as L1, and the distance between the geometric center and the wall of the second perimeter is set as L2, satisfying 1.5≤L1 / L2≤2.5.

[0020] In one embodiment, the booster pump further includes a balance wheel assembly disposed within the base and connected to the diaphragm; the balance wheel assembly is used to pump fluid from the low-pressure chamber to the pump chamber, and from the pump chamber to the high-pressure chamber.

[0021] This invention also proposes a water purification device, which includes the aforementioned water system. The water system has an air inlet, a water inlet, and a water outlet. The water system includes an air inlet valve, an ejector, a booster pump, a first one-way valve, and a mixing tank. The ejector has a first inlet, a second inlet, and a mixing outlet. One end of the air inlet valve is connected to the air inlet, and the other end is connected to the first inlet. The second inlet is connected to the water inlet. The booster pump includes a base, a diaphragm assembly, and a pump cover. The diaphragm assembly is disposed on the base, and the pump cover is connected to the base. The pump cover has a water inlet and a water outlet. The inlet is connected to the mixing outlet, and the outlet is connected to the outlet end; the mixing tank is disposed in the flow path between the booster pump and the outlet end, and the first one-way valve is disposed in the flow path between the jet injector and the air inlet valve; wherein, a low-pressure chamber and a high-pressure chamber are formed between the pump cover and the diaphragm assembly, the low-pressure chamber is connected to the inlet, the high-pressure chamber is connected to the outlet, the volume of the low-pressure chamber is V1, and the volume of the high-pressure chamber is V2, satisfying 1.5≤V1 / V2≤3.

[0022] The technical solution of this invention sets the volume of the low-pressure chamber formed between the pump cover and the diaphragm assembly as V1 and the volume of the high-pressure chamber as V2, and limits the ratio of the volume of the low-pressure chamber to the volume of the high-pressure chamber to a range of 1.5-3. Within this range, the booster pump has a high pumping capacity and high pumping efficiency, which can ensure the amount of gas in the water system, thereby continuously generating microbubble water, improving the preparation effect of microbubble water, and enhancing the user experience. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of an embodiment of the water system provided by the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of an embodiment of a booster pump for a water supply system;

[0026] Figure 3 for Figure 2 Cross-sectional view of the booster pump;

[0027] Figure 4 for Figure 3 Partial structural cross-sectional view of the medium-pressure booster pump;

[0028] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0029] Figure 6 for Figure 4 A magnified view of a section at point A in the middle;

[0030] Figure 7 for Figure 2 Exploded view of part of the structure of the booster pump;

[0031] Figure 8 for Figure 2 Schematic diagram of the structure of the pump cover;

[0032] Figure 9 for Figure 8 Cross-sectional view of the pump cover.

[0033] Explanation of icon numbers:

[0034] 1. Water system; 1a. Air inlet; 1b. Water inlet; 1c. Water outlet; 20. Air inlet valve; 30. Ejector; 31. First inlet; 32. Second inlet; 33. Mixing outlet; 40. Mixing tank; 50. Aerator; 60. Pressure regulating valve; 70. Filter assembly; 80. Air filter element; 91. First check valve; 92. Second check valve;

[0035] 10. Booster pump;

[0036] 100. Base;

[0037] 200. Diaphragm assembly; 210. Diaphragm sheet; 220. Piston cover; 221. Protrusion; 221a. Protrusion sidewall; 221b. Protrusion top wall; 221b1. Mounting hole; 222. First water passage hole; 223. Second water passage hole; 230. Pump chamber; 240. Umbrella valve; 241. Valve stem; 242. Stop; 250. Water tank;

[0038] 300. Balance wheel assembly;

[0039] 400, Pump cover; 400a, Inlet; 400b, Outlet; 400c, Outer wall; 410, First perimeter; 420, Second perimeter; 421, Annular boss; 430, Inlet cavity; 431, First side wall; 432, First bottom wall; 432a, Relief groove; 433, Transition wall; 434, Positioning wall; 434a, Limiting step surface; 440, Outlet cavity; 441, Second bottom wall; 442, Reinforcing rib; 450, Mounting groove; 451, First pressure relief hole; 452, Second pressure relief hole;

[0040] 510, Low-pressure chamber; 520, High-pressure chamber;

[0041] 600. Pressure relief assembly;

[0042] 700. Motor; 710. Housing;

[0043] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0046] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0047] In related technologies, microbubble water systems include a booster pump, a mixing tank, and a water outlet module. The booster pump introduces water and air into the mixing tank, where they mix to form a gas-liquid mixture. This mixture then flows into the water outlet module to form micro-nano bubbles. However, existing booster pumps have an excessively large volume ratio between their low-pressure and high-pressure chambers, meaning the low-pressure chamber is too large. This makes pumping difficult, inefficient, and weak, resulting in discontinuous microbubble water output from the water outlet module and a poor user experience.

[0048] This invention proposes a water system that can improve the pumping efficiency of the booster pump, thereby ensuring continuous microbubble water output from the water system and improving the user experience.

[0049] Please see Figures 1 to 5In one embodiment of the present invention, the water system 1 has an air inlet 1a, a water inlet 1b, and a water outlet 1c. The water system 1 includes an air inlet valve 20, an ejector 30, a booster pump 10, and a mixing tank 40. The ejector 30 has a first inlet 31, a second inlet 32, and a mixing outlet 33. One end of the air inlet valve 20 is connected to the air inlet 1a, and the other end is connected to the first inlet 31. The second inlet 32 ​​is connected to the water inlet 1b. The booster pump 10 includes a base 100, a diaphragm assembly 200, and a pump cover 400. The diaphragm assembly 200 is disposed on the base 100, and the pump cover 400 is connected to the base 100. The pump cover 400 has a water inlet 400. Inlet 400a is connected to outlet 33, and outlet 400b is connected to outlet 1c. The mixing tank 40 is disposed in the flow path between the booster pump 10 and outlet 1c. A low-pressure chamber 510 and a high-pressure chamber 520 are formed between pump cover 400 and diaphragm assembly 200. The low-pressure chamber 510 is connected to inlet 400a, and the high-pressure chamber 520 is connected to outlet 400b. The volume of low-pressure chamber 510 is V1, and the volume of high-pressure chamber 520 is V2, satisfying 1.5≤V1 / V2≤3. The swing wheel assembly 300 is used to pump fluid from low-pressure chamber 510 to pump chamber 230, and from pump chamber 230 to high-pressure chamber 520.

[0050] Specifically, the air inlet valve 20 is used to control the introduction of air or other gases into the ejector 30 through the first inlet 31. The second inlet 32 ​​of the ejector 30 is connected to the water inlet 1b, that is, the second inlet 32 ​​is used to introduce water into the ejector 30. The mixing outlet 33 of the ejector 30 is connected to the water inlet 400a of the booster pump 10. In this way, the gas and liquid paths can be merged into one flow path through the ejector 30 and flow to the booster pump 10. The mixing tank 40 is set in the flow path between the booster pump 10 and the water outlet 1c. The mixing tank 40 is mainly used to mix the air and water pressurized by the booster pump 10 in the mixing tank 40 to form a gas-liquid mixture and then flow out. Finally, microbubble water with micro-nano bubbles flows out from the water outlet 1c for user use.

[0051] Furthermore, the jet ejector 30 may include: a throat section (not shown in the figure), a liquid inlet section (not shown in the figure), an air inlet section (not shown in the figure), and a liquid outlet section (not shown in the figure). The two ends of the throat section are respectively connected to the liquid inlet section and the liquid outlet section. The liquid inlet section is adapted to be connected to the water inlet end 1b. The liquid outlet section is connected to the booster pump 10. The air inlet section is disposed on the side wall of the throat section and is connected to the throat section. The air inlet section is also connected to the air inlet valve 20.

[0052] Specifically, for gas (e.g., air) to enter water system 1, negative pressure must be generated within the pipes of water system 1. Under atmospheric pressure, air is forced into water system 1. The ejector 30 and booster pump 10 in water system 1 work together to generate this negative pressure. The ejector 30 is a tee quick-connect with a Venturi structure. According to Bernoulli's principle, when water flows from the inlet pipe section through the throat section, negative pressure is generated. Under atmospheric pressure, air is drawn into water system 1 from the air inlet 1a. The drawn-in gas passes through the air inlet valve 20 and flows into the throat section through the air inlet pipe section. Gas and water merge into one flow path in the throat section and flow into booster pump 10 through the outlet pipe section. Through the coordination of the throat section, inlet pipe section, air inlet pipe section, and outlet pipe section, when water flows from the inlet pipe section through the throat section, gas can be drawn into water system 1, so that gas and water are delivered to booster pump 10.

[0053] Please see Figure 3 The booster pump 10 includes a base 100, and a diaphragm assembly 200 is disposed within the base 100. The diaphragm assembly 200 has a pump chamber 230 for boosting the fluid flowing into the booster pump 10. The pump cover 400 is provided with an inlet 400a and an outlet 400b. Fluid can flow into the booster pump 10 through the inlet 400a and flow out through the outlet 400b after being pressurized. It should be emphasized that the fluid referred to here is a mixture of gas and liquid. That is, gas and liquid simultaneously flow into the booster pump 10 through the inlet 400a and flow out through the outlet 400b after being boosted. The water ultimately flowing out of the water system is microbubble water. Microbubble water can significantly increase the dissolved oxygen content in ordinary tap water, and this high dissolved oxygen effect is long-lasting and stable. Increased dissolved oxygen helps self-purify water, rapidly inhibiting and eliminating infecting bacteria, viruses, fungi, and parasites without harming beneficial microorganisms. High-oxygen water also promotes the absorption of essential nutrients such as vitamins, minerals, amino acids, and proteins, benefiting health. Furthermore, microbubbly water more thoroughly cleans fruits and vegetables, effectively removing pesticide residues, bacteria, and viruses.

[0054] The entire process of forming microbubble water is as follows: First, air or other gases and water flow together into the booster pump 10. The booster pump 10 pumps the air or other gases and water together to the lower end of the water path for mixing, forming a gas-water mixture solution. Then, by expanding and releasing pressure, the gas dissolved in the water suddenly aggregates to form tiny microbubbles, which are then ejected from the microbubble water nozzle to form microbubble water.

[0055] Please see Figure 5In this embodiment, a low-pressure chamber 510 and a high-pressure chamber 520 are formed between the pump cover 400 and the diaphragm assembly 200. Specifically, a low-pressure chamber 510 and a high-pressure chamber 520 are formed between the pump cover 400 and the piston cover 220. The low-pressure chamber 510 is connected to the inlet 400a, and the high-pressure chamber 520 is connected to the outlet 400b. The balance wheel assembly 300 is used to pump the fluid from the low-pressure chamber 510 to the pump chamber 230, and then from the pump chamber 230 to the high-pressure chamber 520. That is, the fluid flowing in from the inlet 400a first flows into the low-pressure chamber 510, is pumped to the high-pressure chamber 520 by the action of the pump chamber 230, and then flows out from the outlet 400b. The volume of the low-pressure chamber 510 is V1, and the volume of the high-pressure chamber 520 is V2, satisfying 1.5 ≤ V1 / V2 ≤ 3. Within this range, the booster pump 10 has a high pumping capacity and efficiency, ensuring a sufficient amount of gas in the water system, thereby continuously generating microbubble water and improving the preparation effect of microbubble water. Compared to a traditional booster pump 10, the low-pressure chamber 510 of the booster pump 10 of this invention has a smaller volume, facilitating the intake of gas from the smaller volume into the pump chamber 230. In other words, the low-pressure chamber 510 adopts a small-volume design, minimizing the gap between the piston cover 220 and the pump cover 400, ensuring that the air drawn in by the booster pump 10 is as close as possible to the inlet of the pump chamber 230, thus allowing the gas to be quickly drawn into the booster pump 10 and discharged from the pump chamber 230. When the volume of the low-pressure chamber 510 (V1) and the volume of the high-pressure chamber 520 (V2) satisfy the range of 1.5 ≤ V1 / V2 ≤ 3, within this range, the suction capacity of the booster pump 10 can still reach above 50 mL / min during normal tap water intake. This ensures continuous microbubble water output from the water system 1, improving the user experience. The ratio of the volume V1 of the low-pressure chamber 510 to the volume V2 of the high-pressure chamber 520 can, for example, be 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, or 3.0.

[0056] It should be noted that the low-pressure chamber 510 and the high-pressure chamber 520 are both formed by the pump cover 400 and the diaphragm assembly 200, not by the pump cover 400 itself. The volume V1 of the low-pressure chamber 510 refers to the flow volume of gas and water, that is, the maximum volume that the low-pressure chamber 510 can hold for gas and water; the volume V2 of the high-pressure chamber 520 refers to the flow volume of gas and water, that is, the maximum volume that the high-pressure chamber 520 can hold for gas and water.

[0057] Please see Figure 1In one embodiment, the water system 1 further includes an aerator 50, which is located downstream of the mixing tank 40 and connected to the water outlet 1c. Specifically, the aerator 50 is located downstream of the mixing tank 40 and is mainly used to aerate the gas-liquid mixture flowing into the aerator. That is, the air dissolved in the water is released after being depressurized by the aerator 50 to form bubble water, thereby realizing the aerator 50's aerating function. Preferably, the aerator 50 can be arranged close to the water outlet 1c, which can increase the bubble existence time, enhance the user experience, and also reduce the impact damage of the pipeline on the micro-nano bubbles during the outflow process and reduce the flow time in the pipeline.

[0058] Please see Figure 1 In one embodiment, the water system 1 further includes a pressure regulating valve 60, which is located upstream of the jet injector 30 and communicates with the second inlet 32.

[0059] Specifically, the water system 1 may also include a pressure regulating valve 60, which is connected to the ejector 30 and is used to connect the ejector 30 and the water inlet 1b. Further, the pressure regulating valve 60 is connected between the water inlet 1b and the ejector 30. The pressure regulating valve 60 is connected to the water inlet 1b through a pipeline and is connected to the liquid inlet pipe section of the ejector 30 through a pipeline. It should be noted that the key to the continuous and stable generation of micro-nano bubble water by the water system 1 is to ensure that the water system 1 can draw in enough air. The air intake capacity of the water system 1 is mainly determined by the booster pump 10. Once the specifications of the booster pump 101 are selected, the air intake capacity of the water system 1 is also determined. In order to ensure the microbubble concentration, the gas-liquid ratio needs to be ensured to be no less than a preset value, which can be 2%. This application takes the gas-liquid ratio of no less than 2% as an example. The gas-liquid ratio is the ratio of the air intake of the water system 1 to the water flow rate in the water system 1. The minimum gas-liquid ratio corresponds to the maximum water flow rate Q in the system. In order to meet the requirement that the gas-liquid ratio is no less than 2%, the water system 1 needs to be throttled so that the water flow rate in the water system 1 will not exceed Q under any water pressure. Tap water flowing in from the inlet 1b flows into the ejector 30 through the pressure regulating valve 60. As the tap water flows through the pressure regulating valve 60, the valve reduces the pressure and throttles the flow, lowering the water pressure to the maximum allowable pressure value of the water system 1. This maximum pressure value corresponds to the upper limit Q of the water flow rate within the water system 1. Therefore, by working together, the pressure regulating valve 60 and the ejector 30 ensure that the water flow rate in the water system 1 will not exceed Q under any water pressure. This guarantees a suitable gas-to-water ratio within the water system 1, ensuring the bubble concentration of the micro-nano bubble water. It also further prevents intermittent water flow and aerosol spraying from the water purification equipment, improving the user experience.

[0060] Please see Figure 1In one embodiment, the water system 1 further includes a filter assembly 70, which is disposed upstream of the pressure regulating valve 60 for filtering liquid; and / or, the water system 1 further includes an air filter element 80, which is disposed upstream of the air inlet valve 20 for filtering gas.

[0061] Specifically, the water system 1 may further include a filter assembly 70, which can be configured as a filter. The filter assembly 70 is connected to the pressure regulating valve 60 and serves to connect the pressure regulating valve 60 and the inlet 1b. Further, the filter assembly 70 can be connected to the pressure regulating valve 60 via a pipeline, and also to the inlet 1b via a pipeline. After tap water flows in from the inlet 1b, it passes through the filter assembly 70 and flows into the pressure regulating valve 60. As the tap water flows through the filter assembly 70, it filters out impurities such as sediment, rust, and residual chlorine, making the tap water cleaner.

[0062] Please see Figure 1 Furthermore, the water system 1 may also include an air filter element 80, which is connected to the air inlet valve 20 and serves to connect the air inlet valve 20 and the air inlet end 1a. The air filter element 80 can be connected to the air inlet end 1a via a pipe, and it can also be connected to the air inlet valve 20 via a pipe. The air filter element 80 can also be configured as other air filter components that filter gas. When gas flows through the air filter element 80, it filters the inhaled gas, preventing impurities in the air from clogging the air passage components and improving the cleanliness of the micro-nano bubble water.

[0063] Please see Figure 1 In one embodiment, the water system 1 further includes a first one-way valve 91, which is disposed in the flow path between the ejector 30 and the air inlet valve 20 to prevent the backflow of gas flowing into the ejector 30. Further, the water system 1 also includes a second one-way valve 92, which is disposed in the flow path between the booster pump 10 and the mixing tank 40 to prevent the backflow of the gas-liquid mixture flowing out of the booster pump 10.

[0064] Please see Figure 5 and Figure 8 In one embodiment, the pump cover 400 is provided with a first perimeter 410 and a second perimeter 420 spaced apart. The second perimeter 420 is located inside the first perimeter 410 and forms an outlet cavity 440 communicating with the outlet 400b. An inlet cavity 430 communicating with the inlet 400a is formed between the first perimeter 410 and the second perimeter 420. The inlet cavity 430 and the diaphragm assembly 200 enclose a low-pressure cavity 510, and the outlet cavity 440 and the diaphragm assembly 200 enclose a high-pressure cavity 520.

[0065] Specifically, the pump cover 400 is typically an injection-molded part, and the first perimeter 410 and the second perimeter 420 on the pump cover 400 are integrally injection-molded with the pump cover 400. The second perimeter 420 is located inside the first perimeter 410, and a water outlet cavity 440 communicating with the water outlet 400b is formed inside the second perimeter 420. The second perimeter 420 is preferably annular in shape and located at the center of the pump cover 400 for convenient water discharge. The shape of the first perimeter 410 is adapted to the number of chambers 230 or other related structures of the booster pump 10. The first perimeter 410 and the second perimeter 420 are spaced apart, and a water inlet cavity 430 is formed between the first perimeter 410 and the second perimeter 420. Furthermore, the inlet chamber 430 and the diaphragm assembly 200 enclose a low-pressure chamber 510, and the outlet chamber 440 and the diaphragm assembly 200 enclose a high-pressure chamber 520. That is, both the low-pressure chamber 510 and the high-pressure chamber 520 are enclosed by the pump cover 400 and the diaphragm assembly 200.

[0066] Please see Figure 5 and Figure 9 In one embodiment, the water inlet chamber 430 has a first side wall 431, a first bottom wall 432, and a transition wall 433 connecting the first side wall 431 and the first bottom wall 432. The transition wall 433 is inclined in the direction from the first perimeter 410 to the second perimeter 420. Specifically, the water inlet chamber 430 of the pump cover 400 has a first side wall 431, a first bottom wall 432, and a transition wall 433 connecting the first side wall 431 and the first bottom wall 432. In order to further reduce the volume of the low-pressure chamber 510 and ensure that the diaphragm assembly 200 is close enough to the wall of the water inlet chamber 430 and the gap is as small as possible, so as to ensure that the air sucked in by the booster pump 10 is as close as possible to the inlet of the pump chamber 230, thereby improving the pumping efficiency and suction capacity of the booster pump 10, the transition wall 433 is inclined in the direction from the first perimeter 410 to the second perimeter 420.

[0067] Furthermore, the extension direction of the transition wall 433 is consistent with the extension direction of at least a portion of the outer wall surface 400c of the piston cover 220. In this way, the inlet of the pump chamber 230 (i.e., the first water passage 222) can be closer to the cavity wall of the low-pressure chamber 510, thereby drawing gas into the pump chamber 230 in a larger volume, ensuring the suction capacity and suction efficiency of the booster pump 10.

[0068] Please see Figure 7 In one embodiment, the piston cover 220 has a plurality of protrusions 221 on the side facing the pump cover 400. The protrusions 221 are provided with a plurality of first water passage holes 222 that connect the low pressure chamber 510 and the pump chamber 230. A water trough 250 is formed between any two adjacent protrusions 221.

[0069] Specifically, the first water passage 222 is formed on the protrusion 221. The protrusion 221 allows the inlet of the pump chamber 230 (i.e., the first water passage 222) to be closer to the wall of the low-pressure chamber 510, thereby allowing for a larger volume of gas to be drawn into the pump chamber 230, ensuring the suction capacity and efficiency of the booster pump 10. Furthermore, a water trough 250 is formed between any two adjacent protrusions 221. The size and depth of the water trough 250 adjust the volume V1 of the entire low-pressure chamber 510, thereby ensuring that the volume ratio of the low-pressure chamber 510 to the high-pressure chamber 520 is maintained within 1.5-3, improving the suction capacity and pumping efficiency of the booster pump 10.

[0070] Please see Figure 5 and Figure 7 In another embodiment, the piston cover 220 has a protrusion 221 on the side facing the pump cover 400. The protrusion 221 includes a protruding sidewall 221a and a protruding top wall 221b connected to each other. The protruding top wall 221b has a mounting hole 221b1 for mounting the umbrella valve 240 of the diaphragm assembly 200. The extension direction of the transition wall 433 is consistent with the extension direction of the protruding sidewall 221a.

[0071] Specifically, the protrusion 221 allows the inlet (i.e., the first water passage 222) of the pump chamber 230 to be closer to the wall of the low-pressure chamber 510, thereby increasing the volume of gas drawn into the pump chamber 230 and ensuring the suction capacity and efficiency of the booster pump 10. The protrusion 221 includes a protruding side wall 221a and a protruding top wall 221b connected to each other. The protruding top wall 221b has a mounting hole 221b1 for installing the umbrella valve 240 of the diaphragm assembly 200. The protruding side wall 221a has multiple first water passages 222. The umbrella valve 240 is used to open or close the multiple first water passages 222 to draw gas and liquid from the low-pressure chamber 510 into the pump chamber 230 and pump them to the high-pressure chamber 520, from which they flow out through the outlet 400b. The extension direction of the transition wall 433 is consistent with the extension direction of the protruding sidewall 221a, which can ensure that gas and liquid are more easily drawn into the pump chamber 230 through the action of the swing wheel assembly 300 in the low-pressure chamber 510, thereby ensuring the suction capacity of the booster pump 10.

[0072] Please see Figure 6In one embodiment, the distance between the protruding sidewall 221a and the transition wall 433 is M1, satisfying 1mm ≤ M1 ≤ 2mm. Specifically, the distance between the protruding sidewall 221a and the transition wall 433 can be limited to between 1mm and 2mm, so that the distance between the first water passage 222 and the cavity wall of the low-pressure chamber 510 is close enough to ensure the suction capacity and pumping efficiency of the booster pump 10. The specific value of M1 can be, for example, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2.0mm.

[0073] Please see Figure 5 or Figure 6 In one embodiment, the first bottom wall 432 is provided with a clearance groove 432a, which is used to avoid the valve stem portion 241 of the umbrella valve 240 of the diaphragm assembly 200. Specifically, the umbrella valve 240 of the diaphragm assembly 200 is installed in the mounting hole 221b1. The umbrella valve 240 includes a valve stem portion 241 and a stop portion 242 connected to each other. The valve stem portion 241 passes through the mounting hole 221b1 on the piston cover 220. The stop portion 242 is plate-shaped and located on the side of the piston cover 220 away from the low-pressure chamber 510. The stop portion 242 is used to open or close a plurality of first water passage holes 222 to pump water and gas in the low-pressure chamber 510 into the pump chamber 230. Since the valve stem portion 241 at least partially abuts against the surface of the piston cover 220 to ensure the stability of the umbrella valve 240 installation, i.e., the valve stem at least partially protrudes from the surface of the piston cover 220, a clearance groove 432a is provided on the first bottom wall 432 to further reduce the distance between the first bottom wall 432 and the diaphragm assembly 200, so as to avoid the valve stem portion 241. At the same time, the distance between the piston cover 220 and the cavity wall of the low-pressure chamber 510 can be further shortened to ensure the pumping efficiency of the booster pump 10.

[0074] Please see Figure 6 In one embodiment, the distance between the raised top wall 221b and the first bottom wall 432 is set as M2, and the distance between the bottom of the relief groove 432a and the first bottom wall 432 is set as M3, satisfying M2 < M3. M3 can be understood as the depth of the relief groove 432a. M3 > M2, meaning the depth of the relief groove 432a is greater than the distance between the raised top wall 221b and the first bottom wall 432. Thus, by setting the depth of the relief groove 432a to be deeper, the distance between the piston cover 220 and the first bottom wall 432 can be further shortened, ensuring that the volume of the low-pressure chamber 510 is sufficiently small, and that the two are close together, which is beneficial for improving pumping efficiency and pumping capacity.

[0075] Please continue reading. Figure 6In one embodiment, the connection between the relief groove 432a and the first bottom wall 432 is smoothly transitioned. This arrangement prevents damage to the movable valve stem portion 241 caused by the connection between the relief groove 432a and the first bottom wall 432 when the umbrella valve 240 is in motion.

[0076] Please see Figure 9 In one embodiment, the pump cover 400 has an outer wall surface 400c away from the diaphragm assembly 200, and the outlet chamber 440 has a second bottom wall 441. The distance from the second bottom wall 441 to the outer wall surface 400c of the pump cover 400 is less than the distance from the first bottom wall 432 to the outer wall surface 400c of the pump cover 400. Specifically, the second bottom wall 441 is the bottom wall of the outlet chamber 440, which can also be understood as the bottom wall of the high-pressure chamber 520. Since the high-pressure chamber 520 is located in the middle of the pump cover 400, in order to ensure that the volume V2 of the high-pressure chamber 520 is not too small and to ensure the overall pumping efficiency of the booster pump 10, the bottom of the high-pressure chamber 520 is deeper than the bottom of the low-pressure chamber 510.

[0077] Please continue reading. Figure 9 In one embodiment, an annular boss 421 is provided at the connection between the second perimeter 420 and the first bottom wall 432. Specifically, an annular boss 421 is also provided at the connection between the second perimeter 420 and the first bottom wall 432, which can enhance the structural strength of the connection between the second perimeter 420 and the first bottom wall 432, and facilitate the demolding of the pump cover 400 during production.

[0078] Please see Figure 5 and Figure 8 In one embodiment, a positioning wall 434 is further provided between the transition wall 433 and the first side wall 431. The positioning wall 434 has a limiting step surface 434a for abutting against the piston cover 220. Specifically, when the pump cover 400 is assembled with the diaphragm assembly 200, the limiting step surface 434a presses against the piston cover 220 to press the diaphragm assembly 200 onto the base 100, and also ensures the sealing between the piston cover 220 and the diaphragm 210 to prevent water leakage.

[0079] Please see Figure 8In one embodiment, the geometric centers of the first perimeter 410 and the second perimeter 420 coincide. Further, the distance from the geometric center to the wall surface of the first perimeter 410 is set as L1, and the distance from the geometric center to the wall surface of the second perimeter 420 is set as L2, satisfying 1.5 ≤ L1 / L2 ≤ 2.5. Specifically, L1 refers to the distance from the geometric center to the inner wall surface of the first perimeter 410, and L2 refers to the distance from the geometric center to the inner wall surface of the second perimeter 420. If the shape of the first perimeter 410 or the second perimeter 420 is irregular, then L1 is the average of the maximum and minimum values ​​from the geometric center to the inner wall surface of the first perimeter 410; similarly, L2 is the average of the maximum and minimum values ​​from the geometric center to the inner wall surface of the second perimeter 420. By limiting the distance between the geometric center and the inner wall surfaces of the first perimeter 410 and the second perimeter 420, the volumes of the inlet chamber 430 and the outlet chamber 440 can be defined, thereby ensuring that the ratio between the volume V1 of the low-pressure chamber 510 and the volume V2 of the high-pressure chamber 520 is within the range of 1.5-3, thus improving the pumping capacity and efficiency of the booster pump 10.

[0080] Please continue reading. Figure 8 In one embodiment, the bottom wall of the high-pressure chamber 520 is provided with reinforcing ribs 442. Specifically, when the booster pump 10 is in use, the high-pressure chamber 520 is always under high pressure. In order to prevent the high-pressure fluid from deforming the pump cover 400, reinforcing ribs 442 are also provided on the bottom wall of the high-pressure chamber 520 to improve the structural strength of the bottom of the high-pressure chamber 520.

[0081] Please see Figure 5 and Figure 8 In one embodiment, the pump cover 400 is provided with a mounting groove 450, and the booster pump 10 also includes a pressure relief component 600 disposed in the mounting groove 450. The bottom of the mounting groove 450 is provided with a first pressure relief hole 451 and a second pressure relief hole 452. The first pressure relief hole 451 is connected to the low pressure chamber 510, and the second pressure relief hole 452 is connected to the high pressure chamber 520. The first pressure relief hole 451 and the second pressure relief hole 452 can be connected through the pressure relief component 600.

[0082] Please see Figure 2 and Figure 3 In one embodiment, the booster pump 10 further includes a motor 700, the housing 710 of which is connected to the base 100, and the motor shaft of which is connected to the balance wheel assembly 300, for driving the balance wheel assembly 300 to move and drive the diaphragm assembly 200 to pump fluid from the low-pressure chamber 510 to the pump chamber 230, and from the pump chamber 230 to the high-pressure chamber 520.

[0083] The technical solution of the present invention sets the volume of the low-pressure chamber 510 formed between the pump cover 400 and the diaphragm assembly 200 as V1 and the volume of the high-pressure chamber 520 as V2, and limits the ratio of the volume of the low-pressure chamber 510 to the volume of the high-pressure chamber 520 to the range of 1.5-3. Within this range, the booster pump 10 has a high pumping capacity and high pumping efficiency, which can ensure the amount of gas in the water system 1, thereby continuously generating microbubble water, improving the preparation effect of microbubble water, and improving the user experience.

[0084] The present invention also proposes a water purification device, which includes the aforementioned booster pump 10. The specific structure of the booster pump 10 is as described in the above embodiments. Since the present water purification device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0085] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A waterway system having an air inlet end, a water inlet end and a water outlet end, characterised in that, The waterway system comprises: an air inlet valve, a fluidic device, a booster pump, a first check valve and a mixing tank, the fluidic device having a first inlet, a second inlet and a mixing outlet; one end of the air inlet valve is communicated with the air inlet end, the other end is communicated with the first inlet, and the second inlet is communicated with the water inlet end; the booster pump comprises a base, a diaphragm assembly and a pump cover, the diaphragm assembly is arranged on the base, the pump cover is connected with the base, the pump cover is provided with a water inlet and a water outlet, the water inlet is communicated with the mixing outlet, and the water outlet is communicated with the water outlet end; the mixing tank is arranged on a flow path between the booster pump and the water outlet end, and the first check valve is arranged on a flow path between the fluidic device and the air inlet valve; wherein the pump cover and the diaphragm assembly form a low-pressure cavity and a high-pressure cavity which are spaced apart, the low-pressure cavity is communicated with the water inlet, the high-pressure cavity is communicated with the water outlet, the volume of the low-pressure cavity is V1, the volume of the high-pressure cavity is V2, and 1.5≤V1 / V2≤3 is satisfied.

2. The waterway system of claim 1, wherein, The waterway system further comprises a bubbler which is arranged downstream of the mixing tank and is communicated with the water outlet end.

3. The waterway system of claim 2, wherein, The waterway system further comprises a pressure regulating valve which is arranged upstream of the fluidic device and is communicated with the second inlet.

4. The waterway system of claim 3, wherein, The waterway system further comprises a filter assembly which is arranged upstream of the pressure regulating valve and is used for filtering liquid; and / or, The waterway system further comprises a gas filter element which is arranged upstream of the air inlet valve and is used for filtering gas.

5. The waterway system of claim 1, wherein, The pump cover is provided with a first surrounding edge and a second surrounding edge which are spaced apart, the second surrounding edge is located on the inner side of the first surrounding edge, the second surrounding edge forms a water outlet cavity which is communicated with the water outlet, and the first surrounding edge and the second surrounding edge form a water inlet cavity which is communicated with the water inlet, wherein the water inlet cavity and the diaphragm assembly enclose the low-pressure cavity, and the water outlet cavity and the diaphragm assembly enclose the high-pressure cavity.

6. The waterway system of claim 5, wherein, The water inlet cavity has a first side wall, a first bottom wall and a transition wall which connects the first side wall and the first bottom wall, and the transition wall is arranged in an inclined manner in the direction from the first surrounding edge to the second surrounding edge.

7. The waterway system of claim 6, wherein The diaphragm assembly comprises a diaphragm and a piston cover, and the diaphragm and the piston cover enclose a pump cavity; the extension direction of the transition wall is consistent with the extension direction of at least part of the outer wall surface of the piston cover.

8. The waterway system of claim 7, wherein, A plurality of protruding portions are formed on the side of the piston cover which faces the pump cover, the protruding portions are provided with a plurality of first water passing holes which are communicated with the low-pressure cavity and the pump cavity, and a water containing groove is formed between any two adjacent protruding portions.

9. The waterway system of claim 7, wherein, The protruding portion formed on the side of the piston cover which faces the pump cover comprises a protruding side wall and a protruding top wall which are connected, the protruding top wall is provided with a mounting hole for mounting an umbrella valve of the diaphragm assembly, and the extension direction of the protruding side wall is consistent with the extension direction of the transition wall.

10. The waterway system of claim 9, wherein, The distance between the protruding side wall and the transition wall is M1, and 1 mm≤M1≤2 mm is satisfied.

11. The waterway system of claim 9, wherein, The first bottom wall is provided with a clearance groove which is used for avoiding the valve rod portion of the umbrella valve of the diaphragm assembly.

12. The water routing system of claim 11, wherein, The distance between the convex top wall and the first bottom wall is M2, and the distance between the groove bottom of the accommodation groove and the first bottom wall is M3, satisfying M2 13. The waterway system of claim 7, wherein, The pump cover has an outer wall surface away from the diaphragm assembly, and the water outlet cavity has a second bottom wall, the distance between the second bottom wall and the outer wall surface of the pump cover being smaller than the distance between the first bottom wall and the outer wall surface of the pump cover.

14. The waterway system of claim 7, wherein, The transition wall and the first side wall are further provided with a positioning wall, the positioning wall having a limiting step surface for abutting against the piston cover.

15. The waterway system of any one of claims 5 to 14, wherein, The geometric centers of the first and second surrounding edges coincide, the distance between the geometric center and the wall surface of the first surrounding edge being L1, and the distance between the geometric center and the wall surface of the second surrounding edge being L2, satisfying 1.5≤L1 / L2≤2.

5.

16. The waterway system of any one of claims 7 to 14, wherein, The booster pump further comprises a balance wheel assembly arranged in the base and connected with the diaphragm, the balance wheel assembly being used to pump fluid from the low-pressure cavity to the pump cavity and from the pump cavity to the high-pressure cavity.

17. A water purification apparatus, characterized by The waterway system comprises the waterway system according to any one of claims 1 to 16.

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