Water purification equipment

Abstract

The utility model relates to the technical field of water purification, in particular to water purification equipment, and aims to solve the problem that the use experience of a user is poor due to the fact that an existing water purifier is relatively complex in pipeline connection or relatively high in cost. The water purification equipment comprises a reverse osmosis membrane filter element, a water inlet component and a cleaning assembly, the cleaning assembly comprises a first cleaning agent storage component, and the first cleaning agent storage component is arranged on the water inlet component; the first cleaning agent storage component is arranged to allow the water inlet component to supply water to the reverse osmosis membrane filter element when in the first working state and to convey cleaning liquid to the reverse osmosis membrane filter element when in the second working state, so that a first cleaning agent is adopted to clean the reverse osmosis membrane filter element. According to the water purification equipment, the first cleaning agent storage component can be directly arranged on the water inlet component, so that internal pipeline connection of the water purification equipment is greatly simplified, the use of pipelines and valves is reduced, and the cost of the water purification equipment is reduced.

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 purifiers, water purifier-drinking machines, and other water purification equipment are gradually becoming essential drinking water facilities in people's daily lives.

[0003] After prolonged use, dirt and grime in the water will adhere to the inside of the reverse osmosis membrane filter element, affecting the water production rate of the water purification equipment and thus the service life of the reverse osmosis membrane filter element. If the reverse osmosis membrane filter element continues to be used for a long time, the quality of the water produced by the water purification equipment will be reduced. If the reverse osmosis membrane filter element is replaced, it will need to be replaced frequently, and the high cost of replacing the reverse osmosis membrane filter element will lead to a high operating cost of the water purification equipment.

[0004] After a period of use, cleaning the reverse osmosis membrane filter cartridge with a cleaning agent can remove the dirt attached to the surface of the reverse osmosis membrane filter cartridge and extend its service life.

[0005] In existing technologies, cleaning components are usually installed in parallel on the main water inlet line, meaning that both the inlet and outlet ends of the cleaning components are connected to the main water inlet line. This results in a greater number of pipes and valves used in the water purification equipment, making the pipe connections of the water purification equipment more complex, increasing the cost of the water purification equipment, and affecting the user experience. Utility Model Content

[0006] The present invention aims to solve the above-mentioned technical problems to at least a certain extent, that is, to solve the problem that the user experience of existing water purification equipment is poor due to the complexity of pipe connection or high cost.

[0007] This utility model provides a water purification device, which includes: a reverse osmosis membrane filter element; a water inlet component located upstream of the reverse osmosis membrane filter element and communicating with the water inlet end of the reverse osmosis membrane filter element to supply water to the reverse osmosis membrane filter element; and a cleaning component, which includes a first cleaning agent storage component disposed on the water inlet component and used to store a first cleaning agent. The first cleaning agent storage component is configured to allow the water inlet component to supply water to the reverse osmosis membrane filter element when it is in a first working state and to deliver cleaning liquid to the reverse osmosis membrane filter element when it is in a second working state, so as to clean the reverse osmosis membrane filter element with the first cleaning agent.

[0008] In the preferred embodiment of the above-mentioned water purification equipment, the water inlet component includes a main water inlet channel, one end of which is connected to a water source, and the other end of which is connected to the water inlet end of the reverse osmosis membrane filter element. The first detergent storage component is disposed on the main water inlet channel; and / or, the water inlet component includes a pre-filter element and a main water inlet channel, one end of which is connected to the pre-filter element, and the other end of which is connected to the water inlet end of the reverse osmosis membrane filter element. The first detergent storage component is disposed inside the pre-filter element.

[0009] In the preferred embodiment of the above-mentioned water purification equipment, the cleaning component further includes a second cleaning module. The second cleaning module has a cleaning inlet and a cleaning outlet. The cleaning inlet is connected to the wastewater end of the reverse osmosis membrane filter element, and the cleaning outlet is connected to the main water inlet. 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 a cleaning loop. The water purification equipment includes a circulation pump, which is installed on the cleaning loop and can drive the liquid in the cleaning loop to circulate.

[0010] In the preferred technical solution of the above-mentioned water purification equipment, the second cleaning module includes a cleaning pipe, a cleaning valve disposed on the cleaning pipe, and a second cleaning agent storage component. The second cleaning agent storage component is used to store a second cleaning agent. The first end of the cleaning pipe forms the cleaning inlet, and the second end of the cleaning pipe forms the cleaning outlet. The cleaning valve is disposed between the cleaning inlet and the second cleaning agent storage component and can control the opening and closing of the cleaning pipe. And / or, the circulation pump is a booster pump (12) disposed on the main water inlet (1). The booster pump (12) is located downstream of the cleaning outlet (302) and can drive the liquid circulation flow in the cleaning circuit.

[0011] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a one-way valve, which is disposed on the cleaning pipe and located between the cleaning outlet and the second cleaning agent storage component; and / or, the water purification equipment further includes a flow control component, which is disposed on the cleaning pipe and is used to control the water flow rate from the cleaning inlet to the cleaning outlet; and / or, the water purification equipment further includes a dirt collection component, which is used to collect dirt in the cleaning circuit.

[0012] 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.

[0013] In the preferred embodiment of the above-mentioned water purification equipment, the first detergent storage component is disposed on the main water inlet; wherein, the first detergent storage component includes a shell, the shell has a cavity, and the shell is provided with a detergent dispensing port communicating with the cavity, so that detergent can be dispensed into the cavity through the dispensing port when the first detergent storage component is in the second working state; or, the first detergent storage component includes a shell and a sealing member, the shell has a water passage and a cavity, the cavity has an opening, and the sealing member is disposed at the opening and can open or close the opening.

[0014] In the preferred embodiment of the above-mentioned water purification device, the first cleaning agent storage component further includes a grip portion, which is disposed outside the housing and connected to the sealing member, so that the user can drive the sealing member to open or close the opening by means of the grip portion.

[0015] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes an auxiliary cleaning component, which is configured to promote the interaction between the cleaning liquid and the dirt on the reverse osmosis membrane filter element, thereby removing the dirt from the reverse osmosis membrane filter element; and / or, the water purification equipment further includes a pure water outlet pipe and a pure water user component, wherein the pure water end of the reverse osmosis membrane filter element is connected to the pure water user component through the pure water outlet pipe.

[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. One end of the return pipe is connected to the pure water end of the reverse osmosis membrane filter element, and the other end of the return pipe is connected to the main water inlet. 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. One end of the drain pipe is connected to the pure water outlet pipe, and the other 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 the above-mentioned preferred technical solution is adopted, the present application can directly install the first cleaning agent storage component on the water inlet component, which can allow water to be supplied to the reverse osmosis membrane filter element when the water purification equipment is in normal water production mode, and can also deliver cleaning liquid to the reverse osmosis membrane filter element when the water purification equipment is in cleaning mode. Compared with the prior art in which the cleaning components are connected in parallel on the main water inlet, the internal pipeline connection of the water purification equipment can be simplified, the use of pipelines and valves can be reduced, and the cost of the water purification equipment can be greatly reduced.

[0018] Furthermore, by setting up a second cleaning module, different types of cleaning agents can be used to clean the reverse osmosis membrane filter element. This allows for the selection of appropriate cleaning agents based on the type of fouling on the reverse osmosis membrane filter element, improving the cleaning effect. Simultaneously, by forming a cleaning loop, when the cleaning agent stored in the second cleaning agent storage component is used to clean the reverse osmosis membrane filter element, the filter element can be repeatedly circulated and flushed, further enhancing the cleaning effect. In addition, by setting the cleaning inlet of the second cleaning module to connect to the wastewater end of the reverse osmosis membrane filter element and the cleaning outlet to connect to the main inlet water line, the second cleaning module can be directly connected to the inlet and wastewater ends of the reverse osmosis membrane filter element sequentially to form a cleaning loop. Compared to the existing technology where both the inlet and outlet ends of the cleaning module are connected to the main inlet water line, this eliminates the need for a separate circulation pipe, further simplifying the piping connections of the water purification equipment.

[0019] Furthermore, by using a booster pump to drive the liquid circulation within the cleaning circuit, a separate circulation pump can be avoided, thereby further simplifying the piping connections of the water purification equipment and reducing its cost. Moreover, by setting the booster pump to include at least 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 of the cleaning solution during circulation. On the one hand, this prevents the cleaning solution from seeping into the pure water end of the reverse osmosis membrane filter, reducing chemical residues; on the other hand, it also prevents the cleaning solution from damaging the diaphragm inside the booster pump.

[0020] Furthermore, after the cleaning agent in the second cleaning module has finished cleaning the reverse osmosis membrane filter element, the cleaning circuit can be used to circulate and rinse the reverse osmosis membrane filter element, thereby improving the rinsing effect. At the same time, by setting up a dirt collection component, dirt in the cleaning circuit can be collected during cleaning or circulating rinsing of 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

[0021] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of a first embodiment of the water purification equipment of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a second embodiment of the water purification equipment of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the water purification equipment of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of Embodiment 4 of the water purification equipment of this utility model;

[0026] Figure 5 This is a structural schematic diagram of Embodiment 5 of the water purification equipment of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of one embodiment of the first cleaning agent storage component of this utility model;

[0028] Figure 7 This is a schematic diagram of another embodiment of the first cleaning agent storage component of this utility model.

[0029] List of reference numerals in the attached diagram:

[0030] 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; 301. Cleaning inlet; 302. Cleaning outlet; 313. First cleaning agent storage component; 31301. Liquid inlet; 31302. Liquid outlet; 3131. Housing; 313 2. Chamber; 3133. Dispensing port; 3134. Sealing component; 3135. Water passage; 3136. Opening; 3137. Cleaning agent; 3138. Grip part; 321. Cleaning pipe; 322. Cleaning valve; 323. Second cleaning agent storage component; 33. One-way valve; 4. Pre-filter unit; 5. Pure water outlet pipe; 51. Pure water usage component; 6. Dirt collection component; 7. Flow control component. Detailed Implementation

[0031] 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.

[0032] 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 relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] 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.

[0034] like Figures 1 to 5 As shown, the water purification equipment of this utility model includes a reverse osmosis membrane filter element 2, a water inlet component, and a cleaning component. The water inlet component is located at the upstream end of the reverse osmosis membrane filter element 2 and is connected to the water inlet end of the reverse osmosis membrane filter element 2 so as to supply water to the reverse osmosis membrane filter element 2.

[0035] like Figures 1 to 5 As shown, the cleaning component includes a first cleaning agent storage component 313, which is disposed on the water inlet component and used to store a first cleaning agent. The first cleaning agent storage component 313 is configured to allow the water inlet component to supply water to the reverse osmosis membrane filter element 2 when it is in a first working state and to deliver cleaning liquid to the reverse osmosis membrane filter element 2 when it is in a second working state.

[0036] With this configuration, the first cleaning agent storage component 313 can be directly installed on the water inlet component. This allows the water inlet component to supply water to the reverse osmosis membrane filter element 2 when the water purification equipment is in normal water production mode, and also allows the water purification equipment to deliver cleaning liquid to the reverse osmosis membrane filter element 2 when it is in cleaning mode. Compared with the existing technology where the cleaning components are connected in parallel on the main water inlet, this configuration greatly simplifies the internal piping connection of the water purification equipment, reduces the use of pipes and valves, and lowers the cost of the water purification equipment.

[0037] It should be noted that in practical applications, this utility model does not impose any limitations on the water inlet component, as long as it can supply water to the reverse osmosis membrane filter element 2.

[0038] The following two examples illustrate this concept.

[0039] Example 1:

[0040] like Figures 1 to 4As shown, the water inlet component includes a main water inlet 1, the first end of which is connected to a water source, and the second end of which is connected to the water inlet of the reverse osmosis membrane filter element 2. A first detergent storage component 313 is disposed on the main water inlet 1.

[0041] It should be noted that this utility model does not limit the specific connection method of the first end of the main water inlet 1 to the water source. For example, the first end of the main water inlet 1 can be directly connected to a tap water pipe, and the water from the tap water pipe can be directly supplied to the reverse osmosis membrane filter element 2 through the main water inlet 1. Alternatively, the first end of the main water inlet 1 can be connected to a pre-filter unit, and the water filtered by the pre-filter unit flows into the main water inlet 1 to supply water to the reverse osmosis membrane filter element 2. Or, the first end of the main water inlet 1 can be connected to a water storage tank, and the water in the water storage tank can be supplied to the reverse osmosis membrane filter element 2 through the main water inlet 1. Such adjustments and changes to the specific connection method of the first end of the main water inlet 1 to the water source do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0042] Preferably, such as Figures 1 to 4 As shown, the first end of the main water inlet 1 is connected to the pre-filter unit. Water filtered by the pre-filter unit flows into the main water inlet 1 to supply water to the reverse osmosis membrane filter element 2.

[0043] 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.

[0044] Preferably, the pre-filter unit 4 is a pre-filter cartridge.

[0045] Example 2:

[0046] like Figure 5 As shown, the water inlet component includes a pre-filter 4 and a main water inlet 1. One end of the main water inlet 1 is connected to the pre-filter 4, and the other end of the main water inlet 1 is connected to the water inlet of the reverse osmosis membrane filter 2. The first detergent storage component 313 is disposed inside the pre-filter 4.

[0047] It should be noted that a dispensing port can be directly provided on the pre-filter cartridge 4. When the reverse osmosis membrane cartridge 2 needs to be cleaned, the user can dispense the first cleaning agent through the dispensing port. Alternatively, the first cleaning agent storage component 313 can be equipped with a cleaning filter cartridge containing the cleaning agent. The cleaning filter cartridge can be installed inside the pre-filter cartridge 4 and can also be removed from the pre-filter cartridge 4. Such adjustments and changes to the storage method of the first cleaning agent in the pre-filter cartridge 4 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0048] Preferably, the first cleaning agent storage component 313 is provided with a cleaning filter element containing cleaning agent, wherein the cleaning filter element can be installed into the pre-filter element 4 and can also be removed from the pre-filter element 4.

[0049] The water purification equipment of this utility model will be described below using Example 1 as an example.

[0050] It should be noted that, in practical applications, this utility model does not impose any restrictions on the specific location of the first cleaning agent storage component 313 on the main water inlet 1, as long as it can allow water in the main water inlet 1 to enter the reverse osmosis membrane filter element 2 when it is in the first working state and can deliver cleaning liquid to the reverse osmosis membrane filter element 2 when it is in the second working state.

[0051] In one specific embodiment, such as Figure 1 and Figure 2 As shown, the first cleaning agent storage component 313 is located at the downstream end of the booster pump 12.

[0052] By placing the first cleaning agent storage component 313 at the downstream end of the booster pump 12, when the cleaning agent in the first cleaning agent storage component 313 is used to clean the reverse osmosis membrane filter element 2, the cleaning liquid in the first cleaning agent storage component 313 can be prevented from flowing through the booster pump 12, thereby preventing the cleaning agent from corroding the diaphragm in the booster pump 12 and thus extending the service life of the booster pump 12.

[0053] In another specific embodiment, such as Figure 3 and Figure 4 As shown, the first cleaning agent storage component 313 is located at the upstream end of the booster pump 12.

[0054] By placing the first detergent storage component 313 upstream of the booster pump 12, when the water purification equipment is in normal water production mode, the first detergent storage component 313 can be prevented from being subjected to high pressure, thereby preventing water in the main water inlet 1 from seeping into the first detergent storage component 313 under high water pressure, and preventing the detergent in the first detergent storage component 313 from dissolving and caking prematurely.

[0055] Preferably, such as Figures 1 to 4 As shown, the cleaning assembly also includes a second cleaning module, which has a cleaning inlet 301 and a cleaning outlet 302. The cleaning inlet 301 is connected to the wastewater end of the reverse osmosis membrane filter element 2, and the cleaning outlet 302 is connected to the main water inlet 1. 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 cleaning loop. The water purification equipment includes a circulation pump, which is installed on the cleaning loop and can drive the liquid in the cleaning loop to circulate.

[0056] By setting up a second cleaning module, different types of cleaning agents can be used to clean the reverse osmosis membrane filter element 2. This allows for the selection of appropriate cleaning agents based on the type of fouling on the reverse osmosis membrane filter element 2, thereby improving the cleaning effect. At the same time, by forming a cleaning loop, when the cleaning agent in the second cleaning agent storage component 323 is used to clean the reverse osmosis membrane filter element 2, the cleaning solution can be circulated and flushed multiple times, further improving the cleaning effect of the reverse osmosis membrane filter element 2.

[0057] Meanwhile, by setting the cleaning inlet 301 of the second cleaning module to be connected to the wastewater end of the reverse osmosis membrane filter element 2 and setting the cleaning outlet to be connected to the main water inlet 1, the second cleaning module can be directly connected to the water inlet and wastewater ends of the reverse osmosis membrane filter element 2 in sequence to form a cleaning loop. Compared with the prior art in which both the water inlet and outlet ends of the cleaning module are connected to the main water inlet 1, there is no need to set up a circulation pipe to connect the second cleaning module to the water inlet and wastewater ends of the reverse osmosis membrane filter element 2 in sequence to form a cleaning loop, which further simplifies the pipeline connection of the water purification equipment.

[0058] It should be noted that this utility model does not limit the specific type of the circulation pump, as long as it can drive the liquid circulation flow in the cleaning circuit. For example, the circulation pump can be a booster pump 12 installed on the main water inlet 1, which drives the liquid circulation flow in the cleaning circuit. Alternatively, the circulation pump can also be a water pump installed on the cleaning circuit, etc. Such adjustments and changes to the specific type of circulation pump do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0059] Preferably, the circulation pump is a booster pump 12 installed on the main water inlet 1. The booster pump is located downstream of the cleaning outlet 302 and can drive the liquid circulation flow in the cleaning circuit.

[0060] With this setup, the booster pump 12 of the water purifier can be used to drive the liquid circulation in the cleaning circuit, eliminating the need for a separate water pump. This further simplifies the piping connection of the water purifier and reduces its cost.

[0061] It should be noted that those skilled in the art do not impose any restrictions on the specific configuration type of the second cleaning module, as long as the second cleaning module has a cleaning inlet 301 and a cleaning outlet 302, and the cleaning inlet 301 is connected to the wastewater end of the reverse osmosis membrane filter element 2, and the cleaning outlet 302 is connected to the main water inlet 1.

[0062] In one specific embodiment, such as Figures 1 to 4 As shown, the second cleaning module includes a cleaning pipe 321, a cleaning valve 322 disposed on the cleaning pipe 321, and a second cleaning agent storage component 323. The second cleaning agent storage component 323 is used to store a second cleaning agent. The first end of the cleaning pipe 321 forms a cleaning inlet 301, and the second end of the cleaning pipe 321 forms a cleaning outlet 302. The cleaning valve 322 is disposed between the cleaning inlet 301 and the second cleaning agent storage component 323 and can control the opening and closing of the cleaning pipe 321.

[0063] In another specific embodiment, the second cleaning module includes a cleaning tube and a dispensing component (not shown in the figure) disposed on the cleaning tube. The dispensing component has a dispensing port that communicates with the cleaning tube. When the second cleaning module needs to clean the reverse osmosis membrane filter element 2, it can open the dispensing port and dispense the second cleaning agent into the cleaning tube 321 so that the reverse osmosis membrane filter element 2 can be cleaned with the second cleaning agent.

[0064] In another possible embodiment, the second cleaning module includes only a cleaning pipe and a cleaning valve (not shown in the figure). When the second cleaning module is needed to clean the reverse osmosis membrane filter element 2, the second cleaning agent is added through the first cleaning agent storage component so that the reverse osmosis membrane filter element 2 can be cleaned with the second cleaning agent.

[0065] Preferably, such as Figures 1 to 4 As shown, the second cleaning module includes a cleaning pipe 321, a cleaning valve 322 disposed on the cleaning pipe 321, and a second cleaning agent storage component 323. The second cleaning agent storage component 323 is used to store a second cleaning agent. The first end of the cleaning pipe 321 forms a cleaning inlet 301, and the second end of the cleaning pipe 321 forms a cleaning outlet 302. The cleaning valve 322 is disposed between the cleaning inlet 301 and the second cleaning agent storage component 323 and can control the opening and closing of the cleaning pipe 321.

[0066] It should be noted that, in practical applications, those skilled in the art can install a check valve in the second cleaning agent storage component 323 to prevent water in the main water inlet 1 from entering the second cleaning agent storage component 323, or a one-way valve can be installed at the downstream end of the second cleaning agent storage component 323 to prevent water in the main water inlet 1 from entering the second cleaning agent storage component 323, 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.

[0067] Preferably, such as Figures 1 to 4 As shown, the water purification device of this utility model also includes a one-way valve 33. The one-way valve 33 is disposed on the cleaning pipe 321 and located between the cleaning outlet 302 and the second cleaning agent storage component 323. The one-way valve 33 is configured to prevent water in the main water inlet 1 from flowing back into the second cleaning agent storage component 323.

[0068] By setting a one-way valve, water in the main water inlet 1 can be prevented from entering the second cleaning agent storage component 323 through the cleaning outlet 302, thereby preventing the cleaning agent in the second cleaning agent storage component 323 from dissolving prematurely and further improving the user experience.

[0069] 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.

[0070] 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 during the circulation of the cleaning solution. On the one hand, this prevents the cleaning solution from seeping into the pure water end of the reverse osmosis membrane filter element 2, reducing chemical residues. On the other hand, it also prevents the cleaning solution from damaging the diaphragm inside the booster pump 12.

[0071] 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.

[0072] 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.

[0073] It should be noted that, in practical applications, this utility model does not impose any limitations on the specific structural form of the first cleaning agent storage component 313, as long as the first cleaning agent storage component 313 is configured to allow water in the main water inlet 1 to enter the reverse osmosis membrane filter element 2 when it is in the first working state and to deliver cleaning liquid to the reverse osmosis membrane filter element 2 when it is in the second working state.

[0074] In one specific embodiment, such as Figure 6 As shown, the first cleaning agent storage component 313 includes a housing 3131, a cavity 3132 inside the housing 3131, and a cleaning agent dispensing port 3133 on the housing 3131 that communicates with the cavity 3132. When the first cleaning agent storage component 313 is in the second working state, cleaning agent can be dispensed into the cavity 3132 through the dispensing port 3133.

[0075] When the first cleaning module is not required to clean the reverse osmosis membrane filter element 2, no cleaning agent is added to the cavity 3132. At this time, the first cleaning agent storage component 313 is equivalent to a passage that allows water in the main inlet 1 to enter the inlet end of the reverse osmosis membrane filter element 2. When the first cleaning module is required to clean the reverse osmosis membrane filter element 2, the user adds cleaning agent to the cavity 3132 through the inlet 3133. Water in the main inlet 1 enters the cavity 3132 through the liquid inlet 31301 and dissolves the cleaning agent to form a cleaning solution. The cleaning solution is then transported to the reverse osmosis membrane filter element 2 through the liquid outlet 31302 to clean the reverse osmosis membrane filter element 2.

[0076] It should be noted that cleaning solution can also be directly added into the cavity 3132 through the inlet 3133, so that the cleaning solution is delivered into the reverse osmosis membrane filter element 2 to clean the reverse osmosis membrane filter element 2.

[0077] In another specific embodiment, such as Figure 7 As shown, the first cleaning agent storage component 313 includes a housing 3131 and a sealing member 3134. The housing 3131 has a water passage 3135 and a cavity 3132. The cavity 3132 has an opening 3136. The sealing member 3134 is disposed at the opening 3136 and can open or close the opening 3136.

[0078] With this setup, the cleaning agent can be pre-stored in the first cleaning agent storage component 313. When the first cleaning module does not need to clean the reverse osmosis membrane filter element 2, the sealing component 3134 closes the opening 3136, preventing the water passage 3135 from connecting with the cavity 3132. 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 3135. When the first cleaning module needs to clean the reverse osmosis membrane filter element 2, the sealing component 3134 opens the opening 3136, connecting the water passage 3135 with the cavity 3132. The water in the main inlet 1 enters the water passage 3135 through the liquid inlet 31301 and enters the cavity 3132 through the opening 3136 to dissolve the cleaning agent stored in the cavity 3132, forming a cleaning solution. The solution then flows out through the liquid outlet 31302 and is transported to the reverse osmosis membrane filter element 2 to clean it.

[0079] Preferably, such as Figure 7 As shown, the first cleaning agent storage component also includes a grip portion 3138, which is located outside the housing 3131 and connected to the sealing member 3134, so as to open or close the opening 3136 by means of the grip portion 3138.

[0080] 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.

[0081] For example, the first cleaning agent storage member 313 is used to store acidic cleaning agents, and the second cleaning agent storage member 323 is used to store alkaline cleaning agents.

[0082] 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 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 acidic cleaning agents, and those skilled in the art can make adjustments according to actual needs.

[0083] 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.

[0084] 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 alkaline cleaning agents, and those skilled in the art can make adjustments according to actual needs.

[0085] It should be noted that the storage method is not limited to storing acidic cleaning agents in the first cleaning agent storage component 313 and alkaline cleaning agents in the second cleaning agent storage component 323. For example, alkaline cleaning agents can also be stored in the first cleaning agent storage component 313 and acidic cleaning agents can be stored in the second cleaning agent storage component 323.

[0086] It should also be noted that the reverse osmosis membrane filter element 2 can be cleaned first with the first cleaning agent and then with the second cleaning agent, or the reverse osmosis membrane filter element 2 can be cleaned first with the second cleaning agent and then with the first cleaning agent, and so on. Such adjustments and changes to the cleaning order of the first and second cleaning agents for cleaning the reverse osmosis membrane filter element 2 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.

[0087] For example, the reverse osmosis membrane filter element 2 can be cleaned first with a first cleaning agent and then cleaned with a second cleaning agent.

[0088] It should also be noted that this utility model does not limit the form of the cleaning agent in the first cleaning agent storage component 313 and the second cleaning agent storage component 323. For example, the cleaning agent in the first cleaning agent storage component 313 and the second cleaning agent storage component 323 can be set as a solid or liquid cleaning agent, etc. Such adjustments and changes to the specific form of the cleaning agent stored in the first cleaning agent storage component 313 and the second cleaning agent storage component 323 do not deviate from the principle and scope of this utility model, and should be included within the protection scope of this utility model.

[0089] Preferably, the cleaning agents stored in the first cleaning agent storage component 313 and the second cleaning agent storage component 323 are both in solid form.

[0090] More preferably, in order to accelerate the dissolution of the cleaning agent, the cleaning agent is in granular or powder form.

[0091] It should be noted that the water purification equipment of this utility model can also periodically flush the reverse osmosis membrane filter element 2 by means of a cleaning circuit. That is, the water in the main inlet channel 1 flows in through the inlet end of the reverse osmosis membrane filter element 2, then flows out through the wastewater end of the reverse osmosis membrane filter element 2, and finally is transported to the inlet end of the reverse osmosis membrane filter element 2 through the cleaning circuit to achieve cyclic flushing, which greatly improves the flushing effect of the reverse osmosis membrane filter element 2.

[0092] Preferably, such as Figures 1 to 5 As shown, the water purification device of this utility model also includes a flow control component 7, wherein the flow control component 7 is disposed on the cleaning circuit and is used to control the water flow from the cleaning inlet 301 to the cleaning outlet 302.

[0093] 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 inlet end of the reverse osmosis membrane filter element 2 can be controlled, thereby facilitating the adjustment of the wastewater return flow rate of the reverse osmosis membrane filter element 2. On the one hand, it can avoid the problem of water waste caused by the wastewater return flow rate being too low, and on the other hand, it can also avoid the problem of affecting the service life of the reverse osmosis membrane filter element 2 due to the wastewater return flow rate being too high.

[0094] It should be noted that the flow control component 7 can be set to a wastewater ratio, or it can be set to a proportional valve, or it can be set to a water-blocking block with a water passage hole, etc. Such adjustments and changes to the specific setting type of the flow regulating component 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.

[0095] Preferably, the flow control component 7 is the wastewater ratio.

[0096] It should be noted that, in practical applications, this utility model does not impose any limitations on the specific placement of the flow control component 7 on the cleaning pipe 321. For example, the flow control component 7 can be placed upstream of the second cleaning agent storage component 323, or downstream of the second cleaning agent storage component 323, etc. Such adjustments and changes to the specific placement of the flow control component 7 on the cleaning pipe 321 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0097] For example, the flow control component 7 is disposed upstream of the second cleaning agent storage component 323.

[0098] Preferably, such as Figures 1 to 4 As shown, the water purification device of this utility model also includes a dirt collection component 6, which is used to collect dirt in the cleaning circuit.

[0099] By setting up the dirt collection component 6, 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 cleaning circuit can be collected by the dirt collection component 6, preventing the dirt that is cleaned (or rinsed) from causing secondary pollution to the reverse osmosis membrane filter element 2.

[0100] It should be noted that in practical applications, the method is not limited to setting up a dirt collection component 6 to collect dirt in the cleaning circuit. 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 state and to collect dirt in the cleaning circuit when they are in the second working state, 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.

[0101] In another possible embodiment, the first cleaning agent storage member 313 and / or the second cleaning agent storage member 323 are configured to store cleaning agent when in a first operating state and to collect dirt in the cleaning circuit when in a second operating state.

[0102] With this setup, dirt can be collected by the first detergent storage component 313 and / or the second detergent storage component 323, eliminating the need for an additional impurity collection component 8 and further reducing the cost of the water purification equipment.

[0103] Specifically, the first cleaning agent storage component 313 and / or the second cleaning agent storage component 323 have a cavity and a filter screen. When cleaning of the reverse osmosis membrane filter element 2 is not required, the cleaning agent is stored in the cavity. When cleaning of the reverse osmosis membrane filter element 2 is required, the filter screen intercepts dirt in the cavity.

[0104] Preferably, the water purification device of this utility model further includes an auxiliary cleaning component (not shown in the figure), which is configured to promote the interaction between the cleaning liquid and the dirt on the reverse osmosis membrane filter element 2, thereby removing the dirt from the reverse osmosis membrane filter element 2.

[0105] By setting up auxiliary cleaning components, it is easier for the cleaning solution to react physically or chemically with the dirt on the reverse osmosis membrane filter element 2, thereby making it easier to remove the dirt from the reverse osmosis membrane filter element 2, further improving the cleaning efficiency and cleaning effect of the reverse osmosis membrane filter element 2, and further enhancing the user experience.

[0106] It should be noted that, in practical applications, this utility model does not impose any restrictions on the specific type of auxiliary cleaning components, as long as they can promote the interaction between the cleaning liquid and the dirt on the reverse osmosis membrane filter element 2, thereby removing the dirt from the reverse osmosis membrane filter element 2.

[0107] In one specific embodiment, the auxiliary cleaning component includes a heating module, wherein the heating module is disposed on the cleaning circuit.

[0108] This setup allows hot cleaning fluid to be delivered into the reverse osmosis membrane filter element 2, promoting the interaction between the cleaning fluid and the dirt on the reverse osmosis membrane filter element 2, thereby aiding in the removal of dirt. In addition, the heating module also helps dissolve the cleaning agent, thereby increasing the dissolution rate and solubility of the cleaning agent, further enhancing the user experience.

[0109] It should be noted that this utility model does not limit the specific location of the heating module in the cleaning circuit. For example, the heating module can be set on the cleaning pipeline, or on the circulation pipe, or it can be set outside the cleaning agent storage component, etc. Such adjustments and changes to the specific location of the heating module do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0110] In another specific embodiment, the auxiliary cleaning component includes an ultrasonic module, wherein the ultrasonic module is disposed outside the reverse osmosis membrane filter element 2 and is capable of causing the reverse osmosis membrane filter element 2 to vibrate at high frequency and low amplitude, which helps to remove dirt from the reverse osmosis membrane filter element 2.

[0111] In another specific embodiment, the auxiliary cleaning component includes a bubble generator, which is capable of generating bubbles that promote the interaction of the cleaning fluid with the dirt on the reverse osmosis membrane filter element 2, thereby aiding in the removal of dirt.

[0112] Preferably, such as Figures 1 to 4 As shown, the water purification equipment also includes a pure water outlet pipe 5 and a pure water user component 51. The pure water user component 51 is connected to the pure water end of the reverse osmosis membrane filter element 2 through the pure water outlet pipe 5. The pure water user component 51 is used to output the water from the pure water end of the reverse osmosis membrane filter element 2 for users to drink.

[0113] 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.

[0114] Preferably, the pure water component 51 is a post-filter.

[0115] 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.

[0116] The following two scenarios will be discussed in detail.

[0117] Scenario 1:

[0118] like Figure 1 , Figure 3 and Figure 5 As shown, the water purification equipment also includes a return pipe 23 and a return valve 231. One end of the return pipe 23 is connected to the pure water outlet pipe 5, and the other end of the return pipe 23 is connected to the upstream end of the booster pump 12. 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.

[0119] With this setup, on the one hand, after cleaning the reverse osmosis membrane filter 2, the pure water containing detergent from the pure water end of the reverse osmosis membrane filter 2 can be discharged to the upstream end of the booster pump 12 for further filtration through the reverse osmosis membrane filter 2, thus removing any remaining small amount of detergent from the water purification equipment. This helps 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.

[0120] Scenario 2:

[0121] like Figure 2 and Figure 4 As shown, the water purification equipment also includes a drain pipe 22 and a drain valve 221. One end of the drain pipe 22 is connected to the pure water outlet pipe 5, and the other end is connected to the wastewater outlet pipe 21. 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.

[0122] 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.

[0123] Preferably, such as Figures 1 to 5 As shown, the water purification equipment also includes a wastewater valve 211 installed on the wastewater outlet pipe 21, which controls the pure waste ratio of the water purification equipment.

[0124] It should also 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.

[0125] Preferably, such as Figures 1 to 5 As shown, the water purification equipment of this utility model also includes an inlet valve 11 installed on the main inlet water line 1, which is used to control the opening and closing of the main inlet water line 1.

[0126] By setting the inlet valve 11, when the water purification equipment is in water production mode, the inlet valve 11 can be opened, allowing water filtered by the pre-filter to enter the reverse osmosis membrane filter element 2 through the main inlet channel 1 for filtration. When the water purification equipment is in cleaning mode, the inlet valve 11 can be opened, allowing water filtered by the pre-filter to enter the reverse osmosis membrane filter element 2 through the main inlet channel 1, flow into the wastewater end of the reverse osmosis membrane filter element 2, and then enter the first cleaning agent storage component 313 or the second cleaning agent storage component 323, facilitating the cleaning of the reverse osmosis membrane filter element 2.

[0127] It should 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.

[0128] For example, the water purification device is a water purifier.

[0129] The working process of this utility model is described in detail below with reference to the following situations:

[0130] Scenario 1:

[0131] When the water purification equipment is in normal water production mode: the cleaning valve 322 is closed, and the first cleaning agent storage component 313 is switched to the first working state, that is, the first cleaning agent storage component 313 allows the water inlet component to feed water into the reverse osmosis membrane filter element 2. The water delivered to the reverse osmosis membrane filter element 2 by the water inlet component is filtered by the reverse osmosis membrane filter element 2 and then flows out from the pure water outlet pipe 5 for user convenience. The wastewater generated by filtration flows out through the wastewater outlet pipe 21.

[0132] Scenario 2:

[0133] The reverse osmosis membrane filter element 2 is cleaned using the cleaning agent stored in the first cleaning agent storage component 313: the cleaning valve 322 is closed, and the first cleaning agent storage component 313 is switched to the second working state, that is, the first cleaning agent storage component 313 can deliver the first cleaning liquid to the reverse osmosis membrane filter element 2. After the first cleaning liquid is delivered to the reverse osmosis membrane filter element 2, the first cleaning liquid soaks the reverse osmosis membrane filter element 2, thereby cleaning off the dirt on the reverse osmosis membrane filter element 2. After cleaning is completed, the dirt flows out from the wastewater outlet pipe 21 along with the first cleaning liquid.

[0134] Scenario 3:

[0135] The reverse osmosis membrane filter element 2 is cleaned using the cleaning agent stored in the second cleaning agent storage component 323: the cleaning valve 322 is opened, and the first cleaning agent storage component 313 is switched to the first working state. Water in the main inlet water channel 1 flows into the reverse osmosis membrane filter element 2. At this time, the booster pump 12 operates under low voltage, so that the water at the inlet end of the reverse osmosis membrane filter element 2 flows directly into the wastewater end of the reverse osmosis membrane filter element 2 without filtration (the water flowing out from the wastewater end of the reverse osmosis membrane filter element 2 at this time is not the wastewater produced by filtration). Then, it is transported to the second cleaning agent storage component 323 through the cleaning pipe 321 and the second cleaning agent is dissolved to form the second cleaning liquid. Then, the second cleaning liquid flows through the outlet end of the cleaning pipe 321 and through the main inlet water channel 1 to the inlet end of the reverse osmosis membrane filter element 2, thereby transporting the second cleaning liquid into the reverse osmosis membrane filter element 2 and making the second cleaning liquid circulate in the cleaning circuit to clean the reverse osmosis membrane filter element 2 in a cyclical manner, effectively cleaning the dirt on the reverse osmosis membrane filter element 2.

[0136] Scenario 4:

[0137] Flushing mode: After cleaning the reverse osmosis membrane filter element 2 with the first or second cleaning agent, water is introduced into the reverse osmosis membrane filter element 2 through the inlet component to flush the reverse osmosis membrane filter element. The flushing wastewater flows out through the wastewater outlet pipe 21.

[0138] Scenario 5:

[0139] Discharge residual detergent: When cleaning the reverse osmosis membrane filter element 2, a small amount of detergent will seep into the pure water end of the reverse osmosis membrane filter element 2. After cleaning the reverse osmosis membrane filter element 2 with the first or second detergent and starting the water purification equipment in water production mode, open the reflux valve 231 or drain valve 221 to discharge the pure water containing a small amount of detergent from the pure water end of the reverse osmosis membrane filter element 2. This helps to achieve zero pollution and zero chemical addition.

[0140] Scenario 6:

[0141] Wastewater recirculation mode: After the reverse osmosis membrane filter element 2 is cleaned with the second cleaning agent, the cleaning pipe 321 can be used as a wastewater recirculation pipe. That is, when the water purification equipment is in normal water production mode, the flow rate of water flowing from the wastewater end to the inlet end of the reverse osmosis membrane filter element 2 can be adjusted by adjusting the flow control component 7, so that some wastewater flows back to the inlet end of the reverse osmosis membrane filter element 2 through the cleaning pipe 321, which helps to improve the water recovery rate and reduce water waste.

[0142] 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); An inlet component, located upstream of the reverse osmosis membrane filter element (2) and connected to the inlet end of the reverse osmosis membrane filter element (2), is provided to supply water to the reverse osmosis membrane filter element (2); and The cleaning component includes a first cleaning agent storage member (313) disposed on the water inlet member and used to store a first cleaning agent. The first cleaning agent storage member (313) is configured to allow the water inlet member to supply water to the reverse osmosis membrane filter element (2) when it is in a first operating state and to deliver cleaning liquid to the reverse osmosis membrane filter element (2) when it is in a second operating state, so as to clean the reverse osmosis membrane filter element (2) with the first cleaning agent.

2. The water purification equipment according to claim 1, characterized in that, The water inlet component includes a main water inlet (1), one end of which is connected to a water source, and the other end of which is connected to the water inlet of the reverse osmosis membrane filter element (2). The first detergent storage component (313) is disposed on the main water inlet (1). And / or, the water inlet component includes a pre-filter (4) and a main water inlet path, one end of the main water inlet path is connected to the pre-filter (4), the other end of the main water inlet path (1) is connected to the water inlet end of the reverse osmosis membrane filter (2), and the first detergent storage component (313) is disposed inside the pre-filter (4).

3. The water purification equipment according to claim 2, characterized in that, The cleaning assembly further includes a second cleaning module, which has a cleaning inlet (301) and a cleaning outlet (302). The cleaning inlet (301) is connected to the wastewater end of the reverse osmosis membrane filter element (2), and the cleaning outlet (302) is connected to the main inlet water channel (1). The second 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) are sequentially connected to form a cleaning loop. The water purification equipment includes a circulation pump, which is installed on the cleaning circuit and can drive the liquid circulation within the cleaning circuit.

4. The water purification equipment according to claim 3, characterized in that, The second cleaning module includes a cleaning tube (321), a cleaning valve (322) disposed on the cleaning tube (321), and a second cleaning agent storage component (323). The second cleaning agent storage component (323) is used to store a second cleaning agent. The first end of the cleaning tube (321) forms the cleaning inlet (301), and the second end of the cleaning tube (321) forms the cleaning outlet (302). The cleaning valve (322) is disposed between the cleaning inlet (301) and the second cleaning agent storage component (323) and can control the opening and closing of the cleaning tube (321). And / or, the circulation pump is a booster pump (12) installed on the main water inlet (1), the booster pump (12) being located downstream of the cleaning outlet (302) and capable of driving the liquid circulation flow within the cleaning circuit.

5. The water purification equipment according to claim 4, characterized in that, The water purification equipment also includes a one-way valve (33), which is disposed on the cleaning pipe (321) and located between the cleaning outlet (302) and the second cleaning agent storage component (323); And / or, the water purification device further includes a flow control component (7) disposed on the cleaning pipe (321), the flow control component (7) being used to control the water flow rate from the cleaning inlet (301) to the cleaning outlet (302); And / or, the water purification device further includes a dirt collection component (6) for collecting dirt in the cleaning circuit.

6. The water purification equipment according to claim 4, 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.

7. The water purification equipment according to claim 2, characterized in that, The first cleaning agent storage component (313) is disposed on the main water inlet (1); The first cleaning agent storage component (313) includes a housing (3131), the housing (3131) has a cavity (3132) inside, and the housing (3131) is provided with a cleaning agent dispensing port (3133) communicating with the cavity (3132). When the first cleaning agent storage component (313) is in the second working state, cleaning agent can be dispensed into the cavity (3132) through the dispensing port (3133). Alternatively, the first cleaning agent storage component (313) includes a housing (3131) and a sealing member (3134), wherein the housing (3131) has a water passage (3135) and a cavity (3132), the cavity (3132) has an opening (3136), and the sealing member (3134) is disposed at the opening (3136) and is capable of opening or closing the opening (3136).

8. The water purification equipment according to claim 7, characterized in that, The first cleaning agent storage component (313) also includes a grip (3138) which is disposed outside the housing (3131) and connected to the sealing member (3134) so ​​that the user can use the grip (3138) to drive the sealing member (3134) to open or close the opening (3136).

9. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes an auxiliary cleaning component, which is configured to promote the interaction between the cleaning liquid and the dirt on the reverse osmosis membrane filter element (2) to remove the dirt from the reverse osmosis membrane filter element (2); And / or, the water purification equipment further includes a pure water outlet pipe (5) and a pure water user component (51), and 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).

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). One end of the return pipe (23) is connected to the pure water end of the reverse osmosis membrane filter element (2), and the other end of the return pipe (23) is connected to the main water inlet (1). 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). One end of the drain pipe (22) is connected to the pure water outlet pipe (5), and the other 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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