Water purification equipment

Abstract

The utility model relates to the technical field of water purification, particularly provides water purification equipment, and aims to solve the problems that the existing water purification equipment is relatively high in cost, complex in pipeline connection or low in detergent dissolving speed, wastes a water source and the like, so that the use experience of a user is influenced. The water purification equipment comprises a reverse osmosis membrane filter element, a water inlet main path and a first cleaning module, a first connector of the first cleaning module is communicated with the water inlet main path, so that water in the water inlet main path enters a first containing cavity to dissolve a first cleaning agent, and a second connector is communicated with the wastewater end of the reverse osmosis membrane filter element. The first cleaning module, the water inlet end of the reverse osmosis membrane filter element and the wastewater end are communicated to form a first cleaning loop, and the water purification equipment can also drive liquid in the first cleaning loop to circularly flow. Water in the water inlet main path can directly enter the first containing cavity to dissolve the first cleaning agent, the dissolving speed is high, water sources are saved, pipeline connection is simplified, the size of the water purification equipment is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and specifically provides a water purification device. Background Technology

[0002] As people's living standards improve, their demand for drinking water is also increasing. Water systems such as water purifiers and water dispensers are gradually becoming essential drinking water facilities in people's daily lives.

[0003] After prolonged use, dirt and grime can accumulate inside the reverse osmosis membrane filter element, affecting the water production rate and thus the lifespan of the filter element. Cleaning the reverse osmosis membrane filter element with a detergent after a period of use can remove this dirt and grime, extending its lifespan.

[0004] Existing water purification equipment connects the cleaning modules in parallel on the main inlet line, meaning that both the inlet and outlet of the cleaning module are connected to the main inlet line. To improve the cleaning effect of the cleaning solution on the reverse osmosis membrane filter, a separate circulation pipe is usually installed to connect the inlet of the reverse osmosis membrane filter, the wastewater end of the reverse osmosis membrane filter, and the cleaning module in sequence to form a cleaning loop. This allows the cleaning solution to circulate and clean the reverse osmosis membrane filter, resulting in a large number of valves (devices with switching functions, such as solenoid valves and mechanical valves) and pipelines in the water purification equipment, leading to higher costs.

[0005] While setting the inlet of the cleaning module to connect to the wastewater end of the reverse osmosis membrane filter and the outlet of the cleaning module to the main inlet can create a cleaning loop for the cleaning solution to circulate, the solution is slow because the cleaning agent needs to be dissolved using water from the wastewater end of the reverse osmosis membrane filter. In addition, some water will flow out from the wastewater outlet of the water purification equipment, resulting in water waste. Utility Model Content

[0006] The present invention aims to solve the above-mentioned technical problems to at least a certain extent, namely, to solve the problems that affect the user experience due to the high cost of existing water purification equipment, complex pipeline connections, slow dissolution of cleaning agents, and water waste.

[0007] In a first aspect, the present invention provides a water purification device, comprising: a reverse osmosis membrane filter element; a main inlet channel connected to the inlet end of the reverse osmosis membrane filter element and used to supply water to the reverse osmosis membrane filter element; and a first cleaning module having a first cavity, a first interface, and a second interface, wherein the first cavity is used to store a first cleaning agent, the first interface is connected to the main inlet channel so that water in the main inlet channel enters the first cavity to dissolve the first cleaning agent to form a first cleaning liquid, and the second interface is connected to the wastewater end of the reverse osmosis membrane filter element so that the first cleaning module, the inlet end of the reverse osmosis membrane filter element, and the wastewater end of the reverse osmosis membrane filter element are sequentially connected to form a first cleaning loop; wherein the water purification device is configured to drive the liquid in the first cleaning loop to circulate.

[0008] In the preferred embodiment of the above-mentioned water purification equipment, the first cleaning module includes a first cleaning pipe, a first cleaning agent storage component disposed on the first cleaning pipe, and a first cleaning valve. The first end of the first cleaning pipe forms the first interface, the second end of the first cleaning pipe forms the second interface, the first cleaning agent storage component forms the first cavity, and the first cleaning valve is used to control the opening and closing of the first cleaning pipe; or, the first cleaning module includes a first cleaning pipe and a first cleaning agent storage component disposed on the first cleaning pipe. The first end of the first cleaning pipe forms the first interface, the second end of the first cleaning pipe forms the second interface, and the first cleaning agent storage component forms the first cavity.

[0009] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a second cleaning module. The second cleaning module has a second cavity for storing a second cleaning agent. The second cleaning module is configured to allow water in the main inlet channel to enter the second cavity to dissolve the second cleaning agent and form a second cleaning liquid. The second cleaning module is also configured to deliver the second cleaning liquid to the reverse osmosis membrane filter element.

[0010] In the preferred embodiment of the above-mentioned water purification equipment, the second cleaning module includes a second cleaning pipe, a second cleaning agent storage component disposed on the second cleaning pipe, and a second cleaning valve. The first end of the second cleaning pipe is connected to the main water inlet, so that water in the main water inlet enters the second cavity. The second end of the second cleaning pipe is connected to the wastewater end of the reverse osmosis membrane filter element, so that the second cleaning module, the water inlet end of the reverse osmosis membrane filter element, and the wastewater end of the reverse osmosis membrane filter element are sequentially connected to form the second cleaning circuit. The water purification equipment is also configured to drive the liquid circulation flow in the second cleaning circuit.

[0011] In the preferred embodiment of the above-mentioned water purification equipment, the second cleaning module includes a second cleaning agent storage component. The second cleaning agent storage component is disposed on the main water inlet and has a second cavity for storing a second cleaning agent. The second cleaning agent storage component is configured to allow the water inlet from the main water inlet to flow into the reverse osmosis membrane filter element when it is in a first working state and to deliver a second cleaning liquid to the reverse osmosis membrane filter element when it is in a second working state.

[0012] In the preferred embodiment of the above-mentioned water purification equipment, the second cleaning agent storage component includes a shell, the shell forming a second cavity, and the shell having a dispensing port communicating with the second cavity. When the first cleaning agent storage component is in a second working state, the second cleaning agent can be dispensed into the second cavity through the dispensing port. Alternatively, the second cleaning agent storage component includes a shell and a sealing member. The shell has a water passage and a second cavity, the second cavity having an opening. The water passage communicates with the second cavity through the opening, and the sealing member is disposed at the opening and can open or close the opening.

[0013] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a booster pump installed on the main water inlet line. The booster pump can drive the first cleaning liquid in the first chamber to be transported to the reverse osmosis membrane filter element through the first interface. The booster pump can also drive the liquid in the first cleaning circuit to circulate. Alternatively, the water purification equipment further includes a circulation pump installed on the first cleaning circuit. The circulation pump can drive the first cleaning liquid in the first chamber to be transported to the reverse osmosis membrane filter element through the first interface. The circulation pump can also drive the liquid in the first cleaning circuit to circulate.

[0014] In the preferred embodiment of the above-mentioned water purification equipment, the booster pump includes at least a first voltage level and a second voltage level. The booster pump has a level adjustment module, which is used to adjust the voltage level of the booster pump to the second voltage level when the water purification equipment is in the cleaning mode. The voltage value of the second voltage level is lower than the voltage value of the first voltage level.

[0015] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a flow control component, which is used to adjust the water flow rate from the wastewater end of the reverse osmosis membrane filter element to the water inlet end of the reverse osmosis membrane filter element; and / or, the water purification equipment further includes a dirt collection component, which is used to collect dirt in the first cleaning circuit; and / or, the first cleaning agent storage component is configured to store cleaning agent when it is in a first working mode and to collect dirt in the first cleaning circuit when it is in a second working mode.

[0016] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a return pipe and a return valve. The first end of the return pipe is connected to the pure water outlet pipe of the water purification equipment, and the second end of the return pipe is connected to the inlet end of the reverse osmosis membrane filter element. The return valve is installed on the return pipe and is used to control the opening and closing of the return pipe. Alternatively, the water purification equipment further includes a drain pipe and a drain valve. The first end of the drain pipe is connected to the pure water outlet pipe of the water purification equipment, and the second end of the drain pipe is connected to the wastewater outlet pipe of the water purification equipment. The drain valve is installed on the drain pipe and is used to control the opening and closing of the drain pipe.

[0017] When adopting the above-mentioned preferred technical solution, by connecting the first interface of the first cleaning module to the main water inlet and the second interface to the wastewater end of the reverse osmosis membrane filter element, on the one hand, water in the main water inlet can directly enter the first chamber to dissolve the first cleaning agent and form the first cleaning liquid. Compared with using water flowing out from the wastewater end of the reverse osmosis membrane filter element to dissolve the first cleaning agent, this method saves more water and dissolves the first cleaning agent more quickly, improving cleaning efficiency. On the other hand, the first cleaning module, the inlet end of the reverse osmosis membrane filter element, and the wastewater end of the reverse osmosis membrane filter element can be connected sequentially to form the first cleaning loop. When cleaning the reverse osmosis membrane filter element, the cleaning liquid can circulate in the first cleaning loop, thereby effectively improving the cleaning effect on the reverse osmosis membrane filter element. Furthermore, there is no need to set up a separate pipeline to form the cleaning loop, which simplifies pipeline connection, reduces pipeline connection points, reduces the risk of leakage, and also reduces the size of the water purification equipment, saving installation space and improving the user experience.

[0018] Furthermore, by setting up a second cleaning module, not only can the first cleaning agent in the first cleaning module be used to clean the reverse osmosis membrane filter element, but the second cleaning agent in the second cleaning module can also be used to clean the reverse osmosis membrane filter element. This makes it easier to select a suitable cleaning agent based on the type of dirt on the reverse osmosis membrane filter element, thereby improving the cleaning effect.

[0019] Furthermore, by setting the water purification equipment to use a booster pump to drive the flow of cleaning solution, the built-in booster pump of the water purification equipment can be used to achieve the circulation of cleaning solution, eliminating the need for a separate circulation pump. This makes the water purification equipment smaller and less expensive, further improving the user experience. By setting the booster pump to have a first voltage level and a second voltage level, when the water purification equipment is in cleaning mode, the booster pump can operate at a lower voltage level, resulting in lower water pressure during the circulation of cleaning solution. On the one hand, this reduces the amount of cleaning solution that seeps into the pure water end of the reverse osmosis membrane filter, reducing chemical residue. On the other hand, it also reduces the damage caused by the cleaning solution to the diaphragm inside the booster pump.

[0020] Furthermore, by setting up a circulation pump, compared to using a booster pump to drive the liquid circulation within the first and / or second cleaning circuits, the use of a circulation pump to drive the liquid circulation within the first and / or second cleaning circuits can avoid using a booster pump to drive the cleaning fluid circulation within the cleaning circuits. On the one hand, this reduces damage to the diaphragm within the booster pump caused by the cleaning fluid, thereby extending the booster pump's service life. On the other hand, since there is no high pressure, it reduces the amount of cleaning fluid permeating to the pure water end of the reverse osmosis membrane filter element, which not only reduces chemical residues but also reduces damage to the membrane sheets of the reverse osmosis membrane filter element.

[0021] Furthermore, by setting up flow control components, the water flow rate from the wastewater end of the reverse osmosis membrane filter element to the inlet end of the reverse osmosis membrane filter element can be controlled. When the water purification equipment is in normal water production mode, the amount of wastewater that has been filtered by the reverse osmosis membrane filter element and flows back to the inlet end of the reverse osmosis membrane filter element can be adjusted to control the wastewater recovery rate. On the one hand, this can avoid the waste of water resources due to the low wastewater recovery rate, and on the other hand, it can also avoid the service life of the reverse osmosis membrane filter element due to the high wastewater recovery rate.

[0022] Furthermore, by setting up a dirt collection component, dirt in the cleaning circuit can be collected when cleaning or circulating the reverse osmosis membrane filter element, preventing the dirt removed during cleaning (or rinsing) from causing secondary pollution to the reverse osmosis membrane filter element. Attached Figure Description

[0023] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0025] Figure 2 This is a structural schematic diagram of Embodiment 2 of this utility model;

[0026] Figure 3 This is a structural schematic diagram of Embodiment 3 of this utility model;

[0027] Figure 4 This is a structural schematic diagram of Embodiment 4 of this utility model;

[0028] Figure 5 This is a structural schematic diagram of Embodiment 5 of this utility model;

[0029] Figure 6 This is a structural schematic diagram of Embodiment Six of this utility model;

[0030] Figure 7 This is a structural schematic diagram of Embodiment Seven of this utility model;

[0031] Figure 8 This is a structural schematic diagram of Embodiment 8 of this utility model;

[0032] Figure 9 This is a schematic diagram of one embodiment of the second cleaning agent storage component of this utility model;

[0033] Figure 10 This is a schematic diagram of another embodiment of the second cleaning agent storage component of this utility model.

[0034] List of reference numerals in the attached diagram:

[0035] 1. Main water inlet pipe; 11. Inlet valve; 12. Booster pump; 2. Reverse osmosis membrane filter element; 21. Wastewater outlet pipe; 211. Wastewater valve; 22. Drain pipe; 221. Drain valve; 23. Return pipe; 231. Return valve; 3101. First interface; 3102. Second interface; 311. First cleaning pipe; 312. First cleaning valve; 313. First cleaning agent storage component; 3130. First cavity; 321. Second cleaning pipe; 322. Second cleaning agent storage component. 323. Valve; 3230. Second cleaning agent storage component; 3231. Second cavity; 3232. Housing; 3233. Dispensing port; 3233. Sealing component; 3234. Water passage; 3235. Opening; 3236. Second cleaning agent; 3237. Grip part; 4. Pre-filter unit; 5. Pure water outlet pipe; 51. Pure water usage component; 6. Circulation pump; 7. Flow control component; 8. Dirt collection component; 91. First connecting pipe; 92. Second connecting pipe. Detailed Implementation

[0036] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0037] It should be noted that in the description of this utility model, terms such as "upper," "lower," "inner," and "outer," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] like Figures 1 to 8 As shown, the water purification equipment of this utility model includes a reverse osmosis membrane filter element 2, a main water inlet 1, and a first cleaning module. The main water inlet 1 is connected to the water inlet end of the reverse osmosis membrane filter element 2 and is used to supply water to the reverse osmosis membrane filter element 2.

[0040] The first cleaning module has a first cavity 3130, a first interface 3101, and a second interface 3102. The first cavity 3130 is used to store a first cleaning agent. The first interface 3101 is connected to the main water inlet 1 so that water in the main water inlet 1 enters the first cavity 3130 to dissolve the first cleaning agent and form a first cleaning liquid. The second interface 3102 is connected to the wastewater end of the reverse osmosis membrane filter element 2 so that the first cleaning module, the water inlet end of the reverse osmosis membrane filter element 2, and the wastewater end of the reverse osmosis membrane filter element 2 are connected in sequence to form a first cleaning circuit.

[0041] The water purification equipment is configured to drive the liquid circulation flow within the first cleaning circuit.

[0042] With this configuration, by connecting the first interface 3101 of the first cleaning module to the main water inlet 1 and the second interface 3102 to the wastewater end of the reverse osmosis membrane filter element 2, water from the main water inlet 1 can directly enter the first chamber 3130 to dissolve the first cleaning agent and form the first cleaning solution. Compared to using water flowing out from the wastewater end of the reverse osmosis membrane filter element 2 to dissolve the first cleaning agent, this method saves water and dissolves the first cleaning agent more quickly, improving cleaning efficiency. Furthermore, it allows the first cleaning module, the inlet end of the reverse osmosis membrane filter element 2, and the wastewater end of the reverse osmosis membrane filter element 2 to form a first cleaning loop. When cleaning the reverse osmosis membrane filter element 2, the cleaning solution circulates within the first cleaning loop, effectively improving the cleaning effect. This eliminates the need for additional piping to form the cleaning loop, simplifying pipe connections, reducing connection points, lowering the risk of leakage, reducing the size of the water purification equipment, saving installation space, and enhancing the user experience.

[0043] Preferably, such as Figures 1 to 8 As shown, the water purification equipment also includes an inlet valve 11 installed on the main water inlet line 1, and the first interface 3101 of the first cleaning module is connected to the downstream end of the inlet valve 11.

[0044] By setting the inlet valve 11, when the water purification equipment is in normal water production mode, the main water inlet 1 can be controlled to open or close, thus facilitating convenient switching between water production and water production stoppage. When the water purification equipment is in cleaning mode, the inlet valve 11 can be opened to allow water to enter the first chamber 3130 or the second chamber 3230, dissolving the cleaning agent to form a cleaning solution.

[0045] It should be noted that, in practical applications, those skilled in the art can configure the first cleaning module as an integral structure, which has a first cavity 3130, with a first interface 3101 and a second interface 3102 formed at both ends of the first cavity 3130, or the first cleaning module can be configured to include a first cleaning tube 311 and a first cleaning agent storage component 313 disposed on the first cleaning tube 311, with the first cavity 3130 formed inside the first cleaning agent storage component 313, the first end of the first cleaning tube 311 forming the first interface 3101, the second end of the first cleaning tube 311 forming the second interface 3102, and so on. Such adjustments and changes to the specific configuration of the first cleaning module do not deviate from the principle and scope of this utility model and should all be included within the protection scope of this utility model.

[0046] The following describes specific embodiments of the first cleaning module of this utility model in the context of several scenarios.

[0047] Scenario 1:

[0048] like Figures 1 to 3 , Figures 5 to 8 As shown, the first cleaning module includes a first cleaning tube 311, a first cleaning agent storage component 313 and a first cleaning valve 312 disposed on the first cleaning tube 311. A first cavity 3130 is formed in the first cleaning agent storage component 313. A first interface 3101 is formed at the first end of the first cleaning tube 311, and a second interface 3102 is formed at the second end of the first cleaning tube 311. The first cleaning valve 312 is used to control the opening and closing of the first cleaning tube 311.

[0049] It should be noted that this utility model does not limit the specific placement of the first cleaning agent storage component 313 and the first cleaning valve 312 on the first cleaning pipe 311. For example, the first cleaning valve 312 can be placed between the first cleaning agent storage component 313 and the first interface 3101, or the first cleaning valve 312 can be placed between the first cleaning agent storage component 313 and the second interface 3102, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0050] Preferably, the first cleaning valve 312 is disposed between the first cleaning agent storage component 313 and the second interface 3102.

[0051] It should be noted that the first cleaning agent can be left unstored in the first chamber 3130. When the water purification equipment is in normal water production mode, the inlet valve 11 is opened, and the water in the main inlet 1 enters the reverse osmosis membrane filter element 2 to facilitate water filtration. This will not cause the first cleaning agent to dissolve prematurely. When the water purification equipment is in cleaning mode and the first cleaning module is cleaning the reverse osmosis membrane filter element 2, the first cleaning valve 312 is opened, and the first cleaning agent is added into the first chamber 3130. The inlet valve 11 is then opened, allowing the water in the inlet valve 11 to enter the first chamber 3130, thereby dissolving the first cleaning agent to form the first cleaning liquid.

[0052] Alternatively, the first cleaning agent can be stored in the first cavity 3130. When the water purifier is in normal water production mode, the first cleaning valve 312 remains closed. Since some air is sealed in the first cleaning pipe 311, water in the main inlet 1 generally will not enter the first cavity 3130. Also, since the first cleaning pipe 311 is disconnected, even if a small amount of water enters the first cavity 3130 from the main inlet 1 and dissolves some of the first cleaning agent, the first cleaning liquid will not flow back to the main inlet 1, thus not affecting the normal water production of the water purifier. When the water purifier is in cleaning mode and the first cleaning module cleans the reverse osmosis membrane filter 2, the first cleaning valve 312 is opened, and water in the main inlet 1 enters the first cavity 3130 to dissolve the first cleaning agent and form the first cleaning liquid.

[0053] This eliminates the need for a one-way valve on the first cleaning pipe 311, further reducing the cost and size of the water purification equipment.

[0054] Scenario 2:

[0055] like Figure 4 As shown, the first cleaning module includes a first cleaning pipe 311 and a first cleaning agent storage component 313 disposed on the first cleaning pipe 311. A first cavity 3130 is formed in the first cleaning agent storage component 313. A first interface 3101 is formed at the first end of the first cleaning pipe 311, and a second interface 3102 is formed at the second end of the first cleaning pipe 311. The first interface 3101 is connected to the main water inlet 1, and the second interface 3102 is connected to the wastewater end of the reverse osmosis membrane filter element 2.

[0056] When the water purification equipment is in normal water production mode, no cleaning agent is stored in the first cleaning agent storage component 313. When the water purification equipment is in cleaning mode and the first cleaning module cleans the reverse osmosis membrane filter element 2, the user adds the first cleaning agent into the first chamber 3130. Alternatively, the first cleaning agent storage component 313 is configured to add the first cleaning agent into the first chamber 3130. Water enters the first chamber 3130 through the main water inlet 1 to dissolve the first cleaning agent and form the first cleaning liquid.

[0057] By configuring the first cleaning module to include only the first cleaning pipe 311 and the first cleaning agent storage component 313 disposed on the first cleaning pipe 311, the cost of the water purification equipment can be further reduced, the size of the water purification equipment can be further reduced, and the user experience can be improved, since there is no need to set the one-way valve 324 and the control valve on the first cleaning pipe 311.

[0058] It should be noted that although the present invention describes the specific structure of the first cleaning module in the above two scenarios, this is not restrictive. Any other possible forms do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0059] Preferably, such as Figures 2 to 8 As shown, the water purification device of this utility model also includes a second cleaning module. The second cleaning module has a second cavity 3230 for storing a second cleaning agent. The second cleaning module is configured to allow water in the main water inlet 1 to enter the second cavity 3230 to dissolve the second cleaning agent and form a second cleaning liquid. The second cleaning module is also configured to deliver the second cleaning liquid to the reverse osmosis membrane filter element 2.

[0060] By setting up a second cleaning module, not only can the first cleaning agent in the first cleaning module be used to clean the reverse osmosis membrane filter element 2, but the second cleaning agent in the second cleaning module can also be used to clean the reverse osmosis membrane filter element 2. This makes it easier to select a suitable cleaning agent according to the type of dirt on the reverse osmosis membrane filter element 2, thereby improving the cleaning effect.

[0061] It should be noted that, in practical applications, those skilled in the art do not impose any restrictions on the specific configuration type of the second cleaning module.

[0062] The second cleaning module of this utility model will be described below with reference to the following two embodiments.

[0063] Example 1:

[0064] like Figures 2 to 4 , Figure 8 As shown, the second cleaning module includes a second cleaning pipe 321, a second cleaning agent storage component 323 disposed on the second cleaning pipe 321, and a second cleaning valve 322. The first end of the second cleaning pipe 321 is connected to the main water inlet 1 so that water in the main water inlet 1 enters the second cavity 3230. The second end of the second cleaning pipe 321 is connected to the wastewater end of the reverse osmosis membrane filter element 2 so that the second cleaning module, the water inlet end of the reverse osmosis membrane filter element 2, and the wastewater end of the reverse osmosis membrane filter element 2 are sequentially connected to form a second cleaning circuit. The water purification equipment is also configured to drive the liquid circulation flow in the second cleaning circuit.

[0065] It should be noted that the second cleaning agent can be left unstored in the second chamber 3230. When the water purifier is in normal water production mode, the inlet valve 11 is opened, and the water in the main inlet 1 enters the reverse osmosis membrane filter element 2 for filtration, which will not cause the second cleaning agent to dissolve prematurely. When the water purifier is in cleaning mode and the second cleaning module is cleaning the reverse osmosis membrane filter element 2, the second cleaning valve 322 is opened, and the second cleaning agent is added into the second chamber 3230. The inlet valve 11 is then opened, allowing the water in the inlet valve 11 to enter the second chamber 3230, thereby dissolving the second cleaning agent to form the second cleaning liquid.

[0066] Alternatively, the second cleaning agent can be stored in the second chamber 3230. When the water purifier is in normal water production mode, the second cleaning valve 322 remains closed. Since some air is sealed in the second cleaning pipe 321, water in the main inlet pipe 1 generally will not enter the second chamber 3230. Also, since the second cleaning pipe 321 is disconnected, even if a small amount of water enters the second chamber 3230 from the main inlet pipe 1 and dissolves some of the second cleaning agent, the second cleaning liquid will not flow back to the main inlet pipe 1, thus not affecting the normal water production of the water purifier. When the water purifier is in cleaning mode and the second cleaning module cleans the reverse osmosis membrane filter 2, the second cleaning valve 322 is opened, and water in the main inlet pipe 1 enters the second chamber 3230 to dissolve the second cleaning agent and form the second cleaning liquid.

[0067] It should be noted that this utility model does not limit the specific placement of the second cleaning agent storage component 323 and the second cleaning valve 322 on the second cleaning pipe 321. For example, the second cleaning valve 322 can be placed between the second cleaning agent storage component 323 and the wastewater end of the reverse osmosis membrane filter element 2, or the second cleaning valve 322 can be placed between the second cleaning agent storage component 323 and the main inlet water line 1, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0068] Preferably, the second cleaning valve 322 is disposed between the second cleaning agent storage component 323 and the wastewater end of the reverse osmosis membrane filter element 2.

[0069] It should be noted that, in practical applications, those skilled in the art can configure the first end of the first cleaning pipe 311 and the first end of the second cleaning pipe 321 to be connected to the main water inlet 1 respectively, or the first end of the first cleaning pipe 311 can be configured to intersect with the first end of the second cleaning pipe 321 and be connected to the main water inlet 1 through the first connecting pipe 91, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0070] Preferably, such as Figures 2 to 4 , Figure 8 As shown, the first end of the first cleaning pipe 311 intersects with the first end of the second cleaning pipe 321 and is connected to the main water inlet 1 through the first connecting pipe 91.

[0071] It should be noted that, in practical applications, those skilled in the art can configure the second end of the first cleaning tube 311 and the second end of the second cleaning tube 321 to be connected to the wastewater end of the reverse osmosis membrane filter element 2, or the second end of the first cleaning tube 311 can be configured to intersect with the second end of the second cleaning tube 321 and be connected to the wastewater end of the reverse osmosis membrane filter element 2, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0072] Preferably, such as Figures 2 to 4 , Figure 8 As shown, the second end of the first cleaning pipe 311 intersects with the second end of the second cleaning pipe 321 and is connected to the wastewater end of the reverse osmosis membrane filter element 2 through the second connecting pipe 92.

[0073] It should be noted that this utility model does not impose any limitations on the specific driving method for driving the liquid circulation flow in the first cleaning circuit and the second cleaning circuit, as long as it can drive the liquid circulation flow in the first cleaning circuit and / or the second cleaning circuit.

[0074] In one specific embodiment, such as Figures 1 to 7 As shown, the water purification equipment also includes a booster pump 12 installed on the main water inlet 1. The booster pump 12 can drive the cleaning liquid in the first chamber 3130 and / or the second chamber 3230 to be transported to the reverse osmosis membrane filter element 2 through the first interface 3101. The booster pump 12 can also drive the liquid circulation in the first cleaning circuit and / or the second cleaning circuit.

[0075] With this setup, the built-in booster pump 12 of the water purifier can be used to circulate the cleaning solution, eliminating the need for a separate circulation pump 6. This makes the water purifier smaller and cheaper, further enhancing the user experience.

[0076] It should be noted that, in practical applications, those skilled in the art can configure the booster pump 12 to have only one voltage level, or the booster pump 12 can be configured to have at least two voltage levels, and the booster pump 12 has a level adjustment module. The level adjustment module is used to adjust the voltage level of the booster pump 12 to the second voltage level when the water purification equipment is in the cleaning mode, wherein the voltage value of the second voltage level is lower than the voltage value of the first voltage level, etc. Such adjustments and changes to the specific configuration type of the booster pump 12 do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0077] Preferably, the booster pump 12 includes at least a first voltage level and a second voltage level. The booster pump 12 has a level adjustment module, which is used to adjust the voltage level of the booster pump 12 to the second voltage level when the water purification equipment is in the cleaning mode. The voltage value of the second voltage level is lower than the voltage value of the first voltage level.

[0078] With this setting, when the water purifier is in cleaning mode, the booster pump 12 can operate at a lower voltage level, resulting in lower water pressure of the cleaning solution during circulation. On the one hand, this reduces the amount of cleaning solution that seeps into the pure water end of the reverse osmosis membrane filter element 2, thus reducing chemical residues. On the other hand, it also reduces the damage caused by the cleaning solution to the diaphragm inside the booster pump 12.

[0079] It should be noted that the gear adjustment module can be installed on the outer casing of the water purifier. When the water purifier is in cleaning mode, the user can adjust the gear of the booster pump 12 by operating the gear adjustment module. Alternatively, the gear adjustment module can be connected to the controller of the water purifier to realize the automatic adjustment of the voltage level of the booster pump 12, etc. Such flexible adjustment and change do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0080] For example, the speed adjustment module is connected to the controller of the water purification equipment to realize the automatic adjustment of the voltage speed of the booster pump 12.

[0081] In another specific embodiment, such as Figure 8 As shown, the water purification equipment also includes a circulation pump 6 installed in the first cleaning circuit and / or the second cleaning circuit. The circulation pump 6 can drive the cleaning liquid in the first cavity 3130 and / or the second cavity 3230 to be transported to the reverse osmosis membrane filter element 2 through the first interface 3101. The circulation pump 6 can also drive the liquid circulation flow in the first cleaning circuit and / or the second cleaning circuit.

[0082] With this configuration, compared to driving the liquid circulation flow in the first and / or second cleaning circuits via a booster pump 12, using a circulation pump 6 to drive the liquid circulation flow in the first and / or second cleaning circuits avoids the need for a booster pump 12 to drive the cleaning fluid circulation within the cleaning circuits. On one hand, this reduces damage to the diaphragm within the booster pump 12 caused by the cleaning fluid, thereby extending the service life of the booster pump 12. On the other hand, since there is no high pressure, it reduces the amount of cleaning fluid permeating to the pure water end of the reverse osmosis membrane filter element 2, which not only reduces chemical residues but also reduces damage to the membrane of the reverse osmosis membrane filter element 2.

[0083] It should be noted that this utility model does not limit the specific location of the circulation pump 6. For example, the circulation pump 6 can be set on the main water inlet 1, or it can be set on the first cleaning pipe 311 or the second cleaning pipe 321, or it can be set on the first connecting pipe 91 or the second connecting pipe 92, etc. Such adjustments and changes to the specific location of the circulation pump 6 do not deviate from the protection scope of this utility model.

[0084] Preferably, such as Figure 8 As shown, the circulating pump 6 is installed on the first connecting pipe 91.

[0085] It should be noted that after the first cleaning module and / or the second cleaning module finish cleaning the reverse osmosis membrane filter element 2, the water from the wastewater end of the reverse osmosis membrane filter element 2 can flow to the inlet end of the reverse osmosis membrane filter element 2 through the first cleaning module and / or the second cleaning module. In this way, when the water purification equipment is in the flushing mode, the reverse osmosis membrane filter element 2 can be circulated and flushed, thereby improving the flushing effect.

[0086] Preferably, such as Figures 1 to 8 As shown, the water purification equipment of this utility model also includes a flow control component 7, wherein the flow control component 7 is used to adjust the water flow rate from the wastewater end of the reverse osmosis membrane filter element 2 to the main water inlet 1.

[0087] By setting the flow control component 7, the water flow rate from the wastewater end of the reverse osmosis membrane filter element 2 to the water inlet end of the reverse osmosis membrane filter element 2 can be controlled. When the water purification equipment is in normal water production mode, the amount of wastewater that has been filtered by the reverse osmosis membrane filter element 2 and flows back to the water inlet end of the reverse osmosis membrane filter element 2 can be adjusted to control the wastewater recovery rate. On the one hand, this can avoid the waste of water resources due to the low wastewater recovery rate, and on the other hand, it can also avoid the service life of the reverse osmosis membrane filter element 2 due to the high wastewater recovery rate.

[0088] It should be noted that the flow control component 7 can be set as a wastewater ratio, or it can be set as a proportional valve, or it can be set as a water-blocking block with water passage holes, etc. Such adjustments and changes to the specific setting type of the flow control component 7 do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0089] Preferably, the flow control component 7 is the wastewater ratio.

[0090] It should be noted that the flow control component 7 can be set on the first cleaning pipe 311 or the second cleaning pipe 321, or it can be set on the first connecting pipe 91 or the second connecting pipe 92, etc. Such adjustments and changes to the specific setting position of the flow control component 7 do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0091] For example, such as Figures 2 to 4 , Figure 8 As shown, the flow control component 7 is disposed on the first connecting pipe 91.

[0092] For example, such as Figure 1 , Figures 5 to 7 As shown, the flow control component 7 is disposed on the first cleaning pipe 311.

[0093] Preferably, such as Figures 1 to 8 As shown, the water purification device of this utility model also includes a dirt collection component 8, which is used to collect dirt in the first cleaning circuit and / or the second cleaning circuit.

[0094] By setting up the dirt collection component 8, when cleaning the reverse osmosis membrane filter element 2 or when circulating and rinsing the reverse osmosis membrane filter element 2, the dirt in the first cleaning circuit and / or the second cleaning circuit can be collected by the dirt collection component 8, so as to prevent the dirt cleaned (or rinsed) from causing secondary pollution to the reverse osmosis membrane filter element 2.

[0095] It should be noted that the method is not limited to collecting dirt in the cleaning circuit by setting up a dirt collection component 8. For example, the first cleaning agent storage component 313 and / or the second cleaning agent storage component 323 can be configured to store cleaning agent when they are in the first working mode and collect dirt in the cleaning circuit when they are in the second working mode. Alternatively, a filter screen can be set on the cleaning circuit to collect dirt in the cleaning circuit, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0096] Preferably, the first cleaning module and / or the second cleaning module are configured to store cleaning agent when in a first operating mode and to collect dirt in the cleaning circuit when in a second operating mode.

[0097] With this setup, dirt can be collected through the first cleaning module and / or the second cleaning module, eliminating the need for additional impurity collection components and further reducing the cost of the water purification equipment.

[0098] For example, the first cleaning module is in a first working mode where it does not clean the reverse osmosis membrane filter element, and in a second working mode where it cleans the reverse osmosis membrane filter element.

[0099] For example, the second cleaning module is in the first working mode of not using the second cleaning module to clean the reverse osmosis membrane filter element, and the second cleaning module is in the second working mode of using the second cleaning module to clean the reverse osmosis membrane filter element.

[0100] Specifically, a filter screen can be provided in the first detergent storage component 313 and / or the second detergent storage component 323, and the filter screen can intercept dirt and collect it into the first cavity 3130 and / or the second cavity 3230.

[0101] Example 2:

[0102] like Figures 5 to 7 As shown, the second cleaning module includes a second cleaning agent storage component 323, which is disposed on the main water inlet 1 and has a second cavity 3230 for storing the second cleaning agent. The second cleaning agent storage component 323 is configured to allow the water inlet 1 to flow into the reverse osmosis membrane filter element 2 when it is in a first working state and to deliver the second cleaning liquid to the reverse osmosis membrane filter element 2 when it is in a second working state.

[0103] By setting the second cleaning module to include only the second cleaning agent storage component 323, the structure of the second cleaning module can be made simpler, further reducing the size of the water purification equipment, saving installation space, and thus further improving the user experience.

[0104] It should be noted that, in practical applications, those skilled in the art do not impose any restrictions on the specific configuration type of the second cleaning agent storage component 323, as long as it can allow the water inlet main channel 1 to flow into the reverse osmosis membrane filter element 2 when it is in the first working state and can deliver the second cleaning liquid to the reverse osmosis membrane filter element 2 when it is in the second working state.

[0105] In one specific embodiment, such as Figure 9 As shown, the second cleaning agent storage component 323 includes a housing 3231, a second cavity 3230 is formed inside the housing 3231, the second cleaning agent 3236 is stored in the second cavity 3230, and a dispensing port 3232 communicating with the second cavity 3230 is provided on the housing 3231. When the second cleaning agent storage component 323 is in the second working state, the second cleaning agent can be dispensed into the second cavity 3230 through the dispensing port 3232.

[0106] With this setup, when the second cleaning agent is not needed to clean the reverse osmosis membrane filter element 2, it is not added to the second chamber 3230. The second chamber 3230 then acts as a passageway, allowing water from the main inlet 1 to enter the reverse osmosis membrane filter element 2, thus avoiding affecting the normal water production of the water purification equipment. When the second cleaning agent is needed to clean the reverse osmosis membrane filter element 2, it is added to the second chamber 3230 through the inlet 3232. When water from the main inlet 1 enters the second chamber 3230, it dissolves the second cleaning agent to form a second cleaning solution, which is then transported to the reverse osmosis membrane filter element 2.

[0107] In another specific embodiment, such as Figure 10 As shown, the second cleaning agent storage component 323 includes a housing 3231 and a sealing member 3233. The housing 3231 has a water passage 3234 and a second cavity 3230. The second cavity 3230 has an opening 3235. The water passage 3234 communicates with the second cavity 3230 through the opening 3235. The sealing member 3233 is disposed at the opening 3235 and can open or close the opening 3235.

[0108] With this setup, the second cleaning agent can be pre-stored in the second cleaning agent storage component 323. When the second cleaning module is not required to clean the reverse osmosis membrane filter element 2, the sealing component 3233 closes the opening 3235, preventing the water passage 3234 from connecting with the second cavity 3230. At this time, the water in the main inlet 1 can enter the inlet end of the reverse osmosis membrane filter element 2 through the water passage 3234. When the second cleaning module is required to clean the reverse osmosis membrane filter element 2, the sealing component 3233 opens the opening 3235, connecting the water passage 3234 with the second cavity 3230. The water in the main inlet 1 enters the water passage 3234 through the liquid inlet and enters the second cavity 3230 through the opening 3235, dissolving the second cleaning agent stored in the second cavity 3230 to form the second cleaning liquid, which then flows out through the liquid outlet and is transported to the reverse osmosis membrane filter element 2 to clean it.

[0109] Preferably, such as Figure 10As shown, the second cleaning agent storage component 323 also includes a grip portion 3237, which is located outside the housing 3231 and connected to the sealing member 3233, so as to open or close the opening 3235 by means of the grip portion 3237.

[0110] It should be noted that, in practical applications, this utility model does not impose any limitations on the type of cleaning agent in the first cleaning agent storage component 313 and the second cleaning agent storage component 323. For example, the cleaning agent can be set to an acidic cleaning agent, or it can be set to an alkaline cleaning agent, or it can be set to an oxidizing cleaning agent, etc. Such adjustments and changes to the type of cleaning agent do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0111] Preferably, the first cleaning agent storage component 313 is used to store acidic cleaning agents, and the second cleaning agent storage component 323 is used to store alkaline cleaning agents.

[0112] It should be noted that this utility model does not limit the specific type of acidic cleaning agent. For example, the acidic cleaning agent can be set to at least one of malic acid, citric acid, hydrochloric acid, and phosphoric acid. Of course, the acidic cleaning agent can also be other types of cleaning agents, and those skilled in the art can make adjustments according to actual needs.

[0113] Preferably, the acidic cleaning agent is malic acid or citric acid, which not only cleans dirt but also has a good disinfection and antibacterial effect, and can disinfect and inhibit bacteria on the reverse osmosis membrane filter element 2.

[0114] It should also be noted that this utility model does not limit the specific type of alkaline cleaning agent. For example, the alkaline cleaning agent can be set to at least one of dishwashing powder, baking soda, sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, sodium citrate, tetrasodium ethylenediaminetetraacetate, sodium dodecyl sulfate, sodium disulfite, and sodium bisulfite. Of course, the alkaline cleaning agent can also be other types of cleaning agents, and those skilled in the art can make adjustments according to actual needs.

[0115] Preferably, such as Figures 1 to 8 As shown, the water purification device of this utility model also includes a pre-filter unit 4. The outlet end of the pre-filter unit 4 is connected to the main water inlet 1, and the first interface 3101 of the first cleaning module is located at the downstream end of the pre-filter unit 4.

[0116] With this configuration, that is, by setting the first interface 3101 of the first cleaning module to be located downstream of the pre-filter unit 4, the cleaning agent can be dissolved using the purified water filtered by the pre-filter unit 4, thereby improving the solubility of the cleaning agent and the cleanliness of the cleaning solution, and thus effectively improving the cleaning effect of the reverse osmosis membrane filter element 2.

[0117] It should be noted that, in practical applications, those skilled in the art can set the pre-filter unit 4 as a pre-filter cartridge, or they can set the pre-filter unit 4 as a composite cartridge including a pre-filter cartridge and a post-filter cartridge, etc. Such adjustments and changes to the specific type of the pre-filter unit 4 do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0118] Preferably, the pre-filter unit 4 is a pre-filter cartridge.

[0119] Preferably, such as Figures 1 to 8 As shown, the water purification equipment of this utility model also includes a pure water outlet pipe 5 and a pure water user component 51. The pure water end of the reverse osmosis membrane filter element 2 is connected to the pure water user component 51 through the pure water outlet pipe 5.

[0120] It should be noted that, in practical applications, those skilled in the art can directly configure the pure water component 51 as a water outlet component (such as a faucet or spout), with the filtered pure water flowing out from the faucet or spout for user use. Alternatively, the pure water component 51 can be configured as a post-filter, with the filtered pure water flowing into the post-filter to improve the taste for user use. Or, the pure water component 51 can be configured as a pure water tank, with the pure water filtered by the reverse osmosis membrane filter 2 flowing into the pure water tank for storage for user use, and so on. Such adjustments and changes to the specific configuration of the pure water component 51 do not deviate from the principle and scope of this utility model and should all be included within the protection scope of this utility model.

[0121] Preferably, the pure water component 51 is a post-filter.

[0122] It should be noted that when cleaning the reverse osmosis membrane filter element 2, a small amount of cleaning agent will permeate through the membrane of the reverse osmosis membrane filter element 2 to the pure water end. Therefore, after cleaning, there will be a small amount of cleaning agent residue on the pure water end of the reverse osmosis membrane filter element 2. The residual cleaning agent needs to be discharged before it is used by the user.

[0123] The following two scenarios will be discussed in detail.

[0124] Scenario 1:

[0125] like Figures 1 to 2 , Figures 4 to 8 As shown, the water purification equipment also includes a return pipe 23 and a return valve 231. The first end of the return pipe 23 is connected to the pure water outlet pipe 5, and the second end of the return pipe 23 is connected to the inlet end of the reverse osmosis membrane filter element 2. The return valve 231 is installed on the return pipe 23 and is used to control the opening and closing of the return pipe 23.

[0126] With this setup, on the one hand, after cleaning the reverse osmosis membrane filter 2, the pure water containing a small amount of detergent at the pure water end of the reverse osmosis membrane filter 2 can be discharged into the main water inlet 1 for further filtration through the reverse osmosis membrane filter 2, thus removing the remaining small amount of detergent from the water purification equipment. This helps to achieve zero additives and zero chemical pollution. On the other hand, when the water purification equipment is in normal water production mode and does not produce water for a long time, the reverse osmosis membrane filter 2 may experience an increase in the TDS value of the first cup of water. The "first cup of water" can also be returned to the upstream end of the booster pump 12 through the return pipe 23 to prevent users from drinking water with a high TDS value.

[0127] It should be noted that the second end of the return pipe 23 can be directly connected to the inlet of the reverse osmosis membrane filter element 2, or the second end of the return pipe 23 can be set to be connected to the main water inlet 1 and located upstream of the booster pump 12, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0128] Preferably, the second end of the return pipe 23 is connected to the main water inlet 1 and is located upstream of the booster pump 12.

[0129] Scenario 2:

[0130] like Figure 3 As shown, the water purification equipment also includes a drain pipe 22 and a drain valve 221. The first end of the drain pipe 22 is connected to the pure water outlet pipe 5, and the second end of the drain pipe 22 is connected to the wastewater outlet pipe 21 of the water purification equipment. The drain valve 221 is installed on the drain pipe 22 and is used to control the opening and closing of the drain pipe 22.

[0131] With this setup, after cleaning the reverse osmosis membrane filter element 2, first open the drain valve 221 to allow the water from the pure water end of the reverse osmosis membrane filter element 2 to flow into the wastewater outlet pipe 21 through the drain pipe 22. After the pure water containing the cleaning agent is completely discharged, close the drain valve 221 to allow the water from the pure water end of the reverse osmosis membrane filter element 2 to flow into the pure water water component 51 through the pure water outlet pipe 5. This allows residual cleaning agent to be discharged from the water purification equipment, helping to achieve zero additives and zero chemical pollution, and further improving the user experience.

[0132] It should be noted that although this utility model is described in the above two cases, it is not restrictive. For example, the other end of the drain pipe 22 can be directly connected to the drain pipe or the wastewater outlet of the water purification equipment, and the pure water containing detergent can be directly discharged to the drain pipe or the wastewater outlet of the water purification equipment.

[0133] It should also be noted that, in practical applications, those skilled in the art can configure the water purification equipment as a water purifier, or as an integrated water purifier and drinking water machine, or as any other possible type, etc. Such adjustments and changes to the specific configuration type of the water purification equipment do not deviate from the principles and scope of this utility model and should all be included within the protection scope of this utility model.

[0134] For example, the water purification device is a water purifier.

[0135] The working process of water purification equipment is described in detail below, taking into account the following scenarios.

[0136] Scenario 1:

[0137] The water purification equipment is in normal water production mode:

[0138] like Figures 2 to 3 , Figure 8 As shown, the first cleaning valve 312 and the second cleaning valve 322 are closed, and the inlet valve 11, the booster pump 12 and the wastewater valve 211 are opened. The water in the main inlet 1 is transported to the reverse osmosis membrane filter element 2 under the action of the booster pump 12. The pure water filtered by the reverse osmosis membrane filter element 2 flows to the pure water use component 51 through the pure water outlet pipe 5 for users to drink. The wastewater generated by filtration is discharged through the wastewater outlet pipe 21.

[0139] like Figure 1 , Figures 5 to 7 As shown, the first cleaning valve 312 is closed, and the second cleaning agent storage component 323 is adjusted to the first working state. The water in the main water inlet 1 is transported to the reverse osmosis membrane filter element 2 under the action of the booster pump 12. The pure water filtered by the reverse osmosis membrane filter element 2 flows to the pure water use component 51 through the pure water outlet pipe 5 for users to drink. The wastewater generated by filtration is discharged through the wastewater outlet pipe 21.

[0140] Scenario 2:

[0141] The water purification equipment is in cleaning mode and the first cleaning module is cleaning the reverse osmosis membrane filter element 2:

[0142] like Figures 2 to 4 , Figure 8As shown, the second cleaning valve 322 is closed, and the inlet valve 11 is opened. Water in the main inlet 1 flows through the first interface 3101 into the first cavity 3130, dissolving the first cleaning agent in the first cavity 3130 to form the first cleaning liquid. The inlet valve 11 is then closed, and the first cleaning valve 312 is opened. The booster pump 12 (or the circulation pump 6) is started, and the booster pump 12 is switched to the second voltage level. The booster pump 12 (or the circulation pump 6) drives the first cleaning liquid in the first cavity 3130 through the first interface 3101. The first cleaning solution flows into the main inlet pipe 1 and then into the reverse osmosis membrane filter element 2, causing the first cleaning solution to circulate in the first cleaning circuit. This allows the first cleaning solution to remove the dirt from the reverse osmosis membrane filter element 2. During the cleaning process, the first cleaning agent storage component 313 or the dirt collection component 8 collects the dirt in the first cleaning circuit to prevent the dirt from causing secondary pollution to the reverse osmosis membrane filter element 2. After cleaning is completed, the wastewater valve 211 is opened to discharge the cleaning wastewater from the reverse osmosis membrane filter element 2 through the wastewater outlet pipe 21.

[0143] Scenario 3:

[0144] The water purification equipment is in cleaning mode and the second cleaning module is cleaning the reverse osmosis membrane filter element 2:

[0145] like Figures 2 to 4 , Figure 8 As shown, the first cleaning valve 312 is closed, and the inlet valve 11 and the second cleaning valve 322 are opened. The water in the main inlet 1 enters the second cavity 3230 through the first end of the second cleaning pipe 321, dissolving the second cleaning agent in the second cavity 3230 to form the second cleaning liquid. The booster pump 12 (or the circulation pump) is started. Under the action of the booster pump 12 (or the circulation pump 6), the second cleaning liquid is transported to the inlet end of the reverse osmosis membrane filter element 2 through the second end of the second cleaning pipe 321, and the second cleaning liquid circulates in the second cleaning circuit, so that the second cleaning liquid cleans the dirt in the reverse osmosis membrane filter element 2.

[0146] like Figures 5 to 7 As shown, close the first cleaning valve 312, adjust the second cleaning agent storage component 323 to the second working state, open the water inlet valve 11, and the water in the main water inlet 1 enters the second chamber 3230 to dissolve the second cleaning agent and form the second cleaning liquid. Start the booster pump 12 (or start the circulation pump 6), and under the action of the booster pump 12 (or circulation pump 6), deliver the second cleaning liquid to the water inlet end of the reverse osmosis membrane filter element 2, and let the second cleaning liquid soak the reverse osmosis membrane filter element 2 to clean the dirt in the reverse osmosis membrane filter element 2. After cleaning is completed, open the wastewater valve 211 to discharge the cleaning wastewater in the reverse osmosis membrane filter element 2 from the wastewater outlet pipe 21.

[0147] Scenario 4:

[0148] After cleaning is complete, remove any remaining small amount of cleaning agent:

[0149] like Figures 1 to 2 , Figures 4 to 8 As shown, opening the inlet valve 11 and the booster pump 12 allows the reverse osmosis membrane filter element 2 to resume normal water production. Water in the main inlet pipe 1 enters the reverse osmosis membrane filter element 2. The wastewater produced by filtration is discharged through the wastewater outlet pipe 21, and the pure water produced by filtration flows to the inlet end of the reverse osmosis membrane filter element 2 through the return pipe 23. After multiple filtrations, the small amount of detergent remaining at the pure water end of the reverse osmosis membrane filter element 2 is discharged, which helps to achieve zero pollution and zero chemical addition.

[0150] Of course, any remaining small amount of cleaning agent can also be drained through drain pipe 22, such as... Figure 3 As shown, opening the inlet valve 11 and the booster pump 12 allows the reverse osmosis membrane filter element 2 to produce water normally. Water in the main inlet channel 1 enters the reverse osmosis membrane filter element 2, and the wastewater produced by filtration flows through the drain pipe 22 to the wastewater outlet pipe 21, thereby discharging the small amount of detergent remaining at the pure water end of the reverse osmosis membrane filter element 2, which helps to achieve zero pollution and zero chemical addition.

[0151] Scenario 5:

[0152] The water purification equipment is in flushing mode:

[0153] like Figures 1 to 8 As shown, after the first cleaning module (or the second cleaning module) finishes cleaning the reverse osmosis membrane filter element 2, the first cleaning valve 312 (or the second cleaning valve 322) and the inlet valve 11 are opened. Under the action of the booster pump 12 (or the circulation pump 6), the water from the wastewater end of the reverse osmosis membrane filter element 2 is transported to the inlet end of the reverse osmosis membrane filter element 2 through the first cleaning pipe 311 (or the second cleaning pipe 321) to achieve circulating flushing.

[0154] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A water purification device, characterized in that, The water purification equipment includes: Reverse osmosis membrane filter element (2); The main inlet water line (1) is connected to the inlet end of the reverse osmosis membrane filter element (2) and is used to supply water to the reverse osmosis membrane filter element (2); and The first cleaning module has a first cavity (3130), a first interface (3101), and a second interface (3102). The first cavity (3130) is used to store a first cleaning agent. The first interface (3101) is connected to the main water inlet (1) so that water in the main water inlet (1) enters the first cavity (3130) to dissolve the first cleaning agent and form a first cleaning liquid. The second interface (3102) is connected to the wastewater end of the reverse osmosis membrane filter element (2) so that the first cleaning module, the water inlet end of the reverse osmosis membrane filter element (2), and the wastewater end of the reverse osmosis membrane filter element (2) are connected in sequence to form a first cleaning circuit. The water purification device is configured to drive the liquid circulation within the first cleaning circuit.

2. The water purification equipment according to claim 1, characterized in that, The first cleaning module includes a first cleaning tube (311), a first cleaning agent storage component (313) disposed on the first cleaning tube (311), and a first cleaning valve (312). The first end of the first cleaning tube (311) forms the first interface (3101), the second end of the first cleaning tube (311) forms the second interface (3102), the first cleaning agent storage component (313) forms the first cavity (3130), and the first cleaning valve (312) is used to control the opening and closing of the first cleaning tube (311). Alternatively, the first cleaning module includes a first cleaning tube (311) and a first cleaning agent storage component (313) disposed on the first cleaning tube (311), the first end of the first cleaning tube (311) forms the first interface (3101), the second end of the first cleaning tube (311) forms the second interface (3102), and the first cavity (3130) is formed in the first cleaning agent storage component (313).

3. The water purification equipment according to claim 2, characterized in that, The water purification device further includes a second cleaning module, which has a second cavity (3230) for storing a second cleaning agent. The second cleaning module is configured to allow water in the main inlet channel (1) to enter the second cavity (3230) to dissolve the second cleaning agent and form a second cleaning liquid. The second cleaning module is also configured to deliver the second cleaning liquid to the reverse osmosis membrane filter element (2).

4. The water purification equipment according to claim 3, characterized in that, The second cleaning module includes a second cleaning pipe (321), a second cleaning agent storage component (323) disposed on the second cleaning pipe (321), and a second cleaning valve (322). The first end of the second cleaning pipe (321) is connected to the main water inlet (1) so that water in the main water inlet (1) enters the second cavity (3230). The second end of the second cleaning pipe (321) is connected to the wastewater end of the reverse osmosis membrane filter element (2) so that the second cleaning module, the water inlet end of the reverse osmosis membrane filter element (2), and the wastewater end of the reverse osmosis membrane filter element (2) are sequentially connected to form a second cleaning circuit. Alternatively, the second cleaning module includes a second cleaning pipe (321) and a second cleaning agent storage component (323) disposed on the second cleaning pipe (321). The first end of the second cleaning pipe (321) is connected to the main water inlet (1) so that water in the main water inlet (1) enters the second cavity (3230). The second end of the second cleaning pipe (321) is connected to the wastewater end of the reverse osmosis membrane filter element (2) so that the second cleaning module, the water inlet end of the reverse osmosis membrane filter element (2), and the wastewater end of the reverse osmosis membrane filter element (2) are sequentially connected to form a second cleaning circuit. The water purification device is also configured to drive the liquid circulation within the second cleaning circuit.

5. The water purification equipment according to claim 3, characterized in that, The second cleaning module includes a second cleaning agent storage component (323), which is disposed on the main water inlet (1) and has a second cavity (3230) for storing a second cleaning agent. The second cleaning agent storage component (323) is configured to allow the water inlet (1) to flow into the reverse osmosis membrane filter element (2) when it is in a first working state and to deliver the second cleaning liquid to the reverse osmosis membrane filter element (2) when it is in a second working state.

6. The water purification equipment according to claim 5, characterized in that, The second cleaning agent storage component (323) includes a housing (3231), in which a second cavity (3230) is formed. The housing (3231) is provided with a dispensing port (3232) communicating with the second cavity (3230). When the first cleaning agent storage component (313) is in the second working state, the second cleaning agent can be dispensed into the second cavity (3230) through the dispensing port (3232). Alternatively, the second cleaning agent storage component (323) includes a housing (3231) and a sealing member (3233). The housing (3231) has a water passage (3234) and a second cavity (3230). The second cavity (3230) has an opening (3235). The water passage (3234) communicates with the second cavity (3230) through the opening (3235). The sealing member (3233) is disposed at the opening (3235) and can open or close the opening (3235).

7. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes a booster pump (12) installed on the main water inlet (1). The booster pump (12) can drive the first cleaning liquid in the first chamber (3130) to be transported to the reverse osmosis membrane filter element (2) through the first interface (3101). The booster pump (12) can also drive the liquid in the first cleaning circuit to circulate. Alternatively, the water purification device may also include a circulation pump (6) installed on the first cleaning circuit. The circulation pump (6) can drive the first cleaning liquid in the first cavity (3130) to be transported to the reverse osmosis membrane filter element (2) through the first interface (3101). The circulation pump (6) can also drive the liquid in the first cleaning circuit to circulate.

8. The water purification equipment according to claim 7, characterized in that, The booster pump (12) includes at least a first voltage level and a second voltage level. The booster pump (12) has a level adjustment module. The level adjustment module is used to adjust the voltage level of the booster pump (12) to the second voltage level when the water purification equipment is in the cleaning mode. The voltage value of the second voltage level is lower than the voltage value of the first voltage level.

9. The water purification equipment according to claim 2, characterized in that, The water purification equipment also includes a flow control component (7), which is used to adjust the water flow rate from the wastewater end of the reverse osmosis membrane filter element (2) to the water inlet end of the reverse osmosis membrane filter element (2); And / or, the water purification device further includes a dirt collection component (8) for collecting dirt in the first cleaning circuit; And / or, the first cleaning agent storage member (313) is configured to store cleaning agent when it is in a first operating mode and to collect dirt in the first cleaning circuit when it is in a second operating mode.

10. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes a return pipe (23) and a return valve (231). The first end of the return pipe (23) is connected to the pure water outlet pipe (5) of the water purification equipment, and the second end of the return pipe (23) is connected to the inlet end of the reverse osmosis membrane filter element (2). The return valve (231) is installed on the return pipe (23) and is used to control the opening and closing of the return pipe (23). Alternatively, the water purification equipment may also include a drain pipe (22) and a drain valve (221). The first end of the drain pipe (22) is connected to the pure water outlet pipe (5) of the water purification equipment, and the second end of the drain pipe (22) is connected to the wastewater outlet pipe (21) of the water purification equipment. The drain valve (221) is installed on the drain pipe (22) and is used to control the opening and closing of the drain pipe (22).

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