Water purifying apparatus

Abstract

This invention relates to the field of water purification technology, specifically providing a water purification device aimed at solving the problems of low cleaning efficiency, poor cleaning effect, and poor user experience caused by the residue of a small amount of cleaning agent in existing water purification devices. The water purification device of this application includes a reverse osmosis membrane filter element, a cleaning component, a circulation pipe, and a pure water component. The inlet and wastewater ends of the cleaning component and the reverse osmosis membrane filter element are sequentially connected to form a cleaning circuit. The water purification device can drive the cleaning liquid to circulate within the cleaning circuit and discharge the pure water end of the reverse osmosis membrane filter element to the outside of the filter element. By circulating the cleaning liquid within the cleaning circuit to repeatedly flush the reverse osmosis membrane filter element, the cleaning time is effectively shortened, the cleaning effect is improved, and the discharge of pure water containing a small amount of cleaning agent further contributes to achieving zero pollution and zero chemical addition, greatly enhancing the user experience.

Description

Technical Field

[0001] This invention 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 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 extend its lifespan.

[0004] In existing technologies, when cleaning reverse osmosis membrane filter cartridges using cleaning components, the cleaning agent is usually directly delivered into the reverse osmosis membrane filter cartridge for soaking to remove the dirt inside. However, this cleaning method not only has the problems of long soaking time and low cleaning efficiency, but also cannot completely remove the dirt from the reverse osmosis membrane filter cartridge, resulting in poor cleaning effect. Furthermore, after cleaning, a small amount of cleaning agent residue will remain on the pure water end of the reverse osmosis membrane filter cartridge. Although the cleaning agents currently used are harmless to the human body, as people's requirements for drinking water become increasingly stringent, the small amount of cleaning agent residue after cleaning will still affect the user experience. Summary of the Invention

[0005] The present invention aims to at least partially solve the above-mentioned technical problems, namely, to at least partially solve the problem that existing water purification equipment has low cleaning efficiency, poor cleaning effect and a small amount of cleaning agent residue after cleaning, which leads to a poor user experience.

[0006] In a first aspect, the present invention provides a water purification device, comprising: a reverse osmosis membrane filter element; a cleaning component having a cleaning agent storage member for storing cleaning agent, the cleaning component being connected to the inlet end of the reverse osmosis membrane filter element to deliver cleaning liquid to the reverse osmosis membrane filter element; a circulation pipe having a first end connected to the wastewater end of the reverse osmosis membrane filter element and a second end connected to the cleaning component, such that the cleaning component, the inlet end of the reverse osmosis membrane filter element, and the wastewater end are sequentially connected to form a cleaning loop, the water purification device being configured to drive the cleaning liquid to circulate within the cleaning loop; and a pure water consumption component; wherein the water purification device is configured to deliver water from the pure water end of the reverse osmosis membrane filter element to the pure water consumption component for user drinking, and the water purification device is further configured to discharge water from the pure water end of the reverse osmosis membrane filter element to the outside of the water purification device.

[0007] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a wastewater outlet pipe, which is connected to the wastewater end of the reverse osmosis membrane filter element. The pure water end of the reverse osmosis membrane filter element can be selectively connected to the pure water component or the wastewater outlet pipe.

[0008] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a pure water outlet pipe, a drain pipe, and a drain valve. 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. 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. The drain valve is installed on the drain pipe and is used to control the opening and closing of the drain pipe. Alternatively, the water purification equipment further includes a pure water outlet pipe, a drain pipe, and a first reversing valve. The first port of the first reversing valve is connected to the pure water end of the reverse osmosis membrane filter element, the second port of the first reversing valve is connected to the pure water outlet pipe, the third port of the first reversing valve is connected to the first end of the drain pipe, and the second end of the drain pipe is connected to the wastewater outlet pipe. The first port of the first reversing valve can selectively connect to the second port or the third port.

[0009] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a wastewater valve installed on the wastewater outlet pipe, the wastewater outlet pipe being connected to the wastewater end of the reverse osmosis membrane filter element, the first end of the circulation pipe being connected to the wastewater outlet pipe and located upstream of the wastewater valve; and / or, the wastewater end of the reverse osmosis membrane filter element can be selectively connected to the wastewater outlet pipe or the first end of the circulation pipe.

[0010] In the preferred embodiment of the above-mentioned water purification equipment, the cleaning component has a cleaning outlet, and the water purification equipment further includes a main water inlet, a circulation pump, and a booster pump disposed on the main water inlet. The main water inlet is connected to the water inlet end of the reverse osmosis membrane filter element, the cleaning outlet is connected to the main water inlet and is located downstream of the booster pump, and the circulation pump is disposed on the cleaning circuit and is used to drive the liquid circulation flow in the cleaning circuit.

[0011] In the preferred embodiment of the above-mentioned water purification equipment, the cleaning component further includes a cleaning pipeline, with a cleaning inlet and a cleaning outlet at both ends. The cleaning inlet is connected to the main water inlet so that water in the main water inlet enters the cleaning agent storage component to form a cleaning liquid. The cleaning outlet is connected to the main water inlet so that the cleaning liquid in the cleaning agent storage component enters the reverse osmosis membrane filter element through the main water inlet. The second end of the circulation pipe is connected to the cleaning pipeline.

[0012] In the preferred embodiment of the above-mentioned water purification equipment, the cleaning component includes a cleaning pipeline and a cleaning valve and a cleaning agent storage component disposed on the cleaning pipeline. The two ends of the cleaning pipeline respectively form the cleaning inlet and the cleaning outlet. The cleaning agent storage component is located downstream of the cleaning valve and is used to store acidic or alkaline cleaning agents. Alternatively, the cleaning component includes a manifold, at least two parallel cleaning pipelines, a cleaning valve and a cleaning agent storage component disposed on each of the cleaning pipelines. The first ends of the plurality of cleaning pipelines converge and communicate with the cleaning inlet. The second ends of the plurality of cleaning pipelines converge and communicate with the manifold. The end of the manifold forms the cleaning outlet. The cleaning agent storage component is located downstream of the cleaning valve. The cleaning agent storage component on each of the cleaning pipelines is used to store different types of cleaning agents.

[0013] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a first water quality detection component, which is used to detect the water quality information of the pure water end of the reverse osmosis membrane filter element; and / or, the water purification equipment further includes a second water quality detection component, which is used to detect the water quality information in the cleaning loop; and / or, the water purification equipment further includes a third water quality detection component, which is disposed on the wastewater outlet pipe and used to detect the water quality information in the wastewater outlet pipe.

[0014] 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.

[0015] In the preferred embodiment of the above-mentioned water purification equipment, the cleaning agent storage component has a cavity, and the cleaning agent storage component is configured to store cleaning agent in the cavity when it is in a first working state and to collect impurities in the cleaning circuit into the cavity when it is in a second working state.

[0016] When the above-mentioned preferred technical solution is adopted, by setting up a circulation pipe, the inlet end of the cleaning component, the wastewater end of the reverse osmosis membrane filter element, and the wastewater end of the reverse osmosis membrane filter element can be connected in sequence to form a cleaning circuit. When the cleaning component cleans the reverse osmosis membrane filter element, the cleaning solution circulates in the cleaning circuit, thereby repeatedly flushing the reverse osmosis membrane filter element and effectively improving the cleaning effect of the reverse osmosis membrane filter element. At the same time, when the water purification equipment is in normal water production mode, the water from the pure water end of the reverse osmosis membrane filter element is delivered to the pure water consumption component for users to drink. After the cleaning component has finished cleaning the reverse osmosis membrane filter element, the water purification equipment can also discharge the pure water containing cleaning agent that has permeated into the pure water end of the reverse osmosis membrane filter element to the outside of the water purification equipment, thereby helping to achieve zero additives and zero chemical pollution, and greatly improving the user experience.

[0017] Furthermore, by configuring the pure water end of the reverse osmosis membrane filter cartridge to selectively connect to either the pure water component or the wastewater outlet pipe, water containing a small amount of detergent residue flowing from the pure water end of the reverse osmosis membrane filter cartridge can be discharged into the wastewater outlet pipe and then discharged to the outside of the water purification equipment. After the water containing a small amount of detergent residue has been completely discharged, the pure water end of the reverse osmosis membrane filter cartridge can be connected to the pure water component, thereby completely discharging the detergent from the cleaning process. This helps to achieve zero pollution and zero chemical addition, further enhancing the user experience. In addition, discharging the water containing a small amount of detergent residue to the outside of the water purification equipment through the wastewater outlet pipe simplifies the internal piping connection of the water purification equipment, eliminating the need for additional piping to discharge the water containing a small amount of detergent from the pure water end of the reverse osmosis membrane filter cartridge.

[0018] Furthermore, by setting the first end of the circulation pipe to be connected to the wastewater end of the reverse osmosis membrane filter element through the wastewater outlet pipe, not only can the cleaning component, the inlet end of the reverse osmosis membrane filter element, and the wastewater end of the reverse osmosis membrane filter element be connected in sequence to form a cleaning circuit, which facilitates the cleaning of the reverse osmosis membrane filter element, but also the cleaning liquid in the cleaning circuit can be discharged through the wastewater outlet pipe after cleaning is completed, thus eliminating the need to install an additional drainage pipe.

[0019] Furthermore, compared to the method of driving the liquid circulation flow in the cleaning circuit through a booster pump, the method of setting up a circulation pump to drive the liquid circulation flow in the cleaning circuit can prevent the cleaning liquid from entering the booster pump and damaging the diaphragm of the booster pump, thereby avoiding affecting the service life of the booster pump. Since the cost of the circulation pump is much lower than that of the booster pump, it can greatly save the cost of the water purification equipment and further improve the user experience.

[0020] Furthermore, compared to setting the cleaning component to have only a cleaning outlet, setting the cleaning component to have both a cleaning inlet and a cleaning outlet allows the cleaning component to fill water into the cleaning inlet to form cleaning fluid during cleaning. This avoids storing a large amount of cleaning fluid in the cleaning agent storage component, which would result in an excessively large cleaning component, and further improves the user experience.

[0021] Furthermore, by setting up a first water quality detection component, the water quality information of the pure water end of the reverse osmosis membrane filter element can be accurately detected. Based on this information, the pure water end of the reverse osmosis membrane filter element can be selectively connected to the pure water supply component or the wastewater outlet pipe. This not only thoroughly removes any remaining detergent residue from the reverse osmosis membrane filter element, helping to achieve zero additives and zero chemical pollution, but also saves water and further enhances the user experience. By setting up a second water quality detection component, the water quality information of the cleaning solution in the cleaning circuit can be detected. Based on this information, the cleaning of the reverse osmosis membrane filter element can be selectively terminated. This avoids both insufficient cleaning time leading to incomplete removal of dirt from the reverse osmosis membrane filter element and excessive cleaning time resulting in energy waste.

[0022] Furthermore, by setting up a third water quality detection component, when the wastewater generated from rinsing the reverse osmosis membrane filter element enters the wastewater outlet pipe, the water quality information in the wastewater outlet pipe can be detected. Thus, based on the detection data of the third water quality detection component, it can be determined whether the residual cleaning agent in the reverse osmosis membrane filter element has been rinsed clean, thereby saving water resources.

[0023] Furthermore, by configuring the cleaning agent storage component to store the cleaning agent in the chamber when it is in the first working state and to collect impurities in the cleaning circuit into the chamber when it is in the second working state, the cleaning agent can be stored in the chamber when the reverse osmosis membrane filter element does not need to be cleaned. When the cleaning component cleans the reverse osmosis membrane filter element, water in the main inlet channel enters the chamber and dissolves the cleaning agent to form a cleaning solution. Under the action of the circulation pump, the cleaning agent circulates in the cleaning circuit, thereby washing off the dirt on the surface of the reverse osmosis membrane filter element. When the dirt flows with the cleaning solution in the cleaning circuit and into the chamber, the washed-off impurities are collected in the chamber, avoiding secondary pollution of the reverse osmosis membrane filter element by the washed-off impurities, and further improving the cleaning effect of the cleaning component on the reverse osmosis membrane filter element. Attached Figure Description

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of a first embodiment of the water purification device of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of a second embodiment of the water purification device of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a third embodiment of the water purification device of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of Embodiment 4 of the water purification device of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of Embodiment 5 of the water purification device of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of Embodiment Six of the water purification device of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of a cleaning agent storage component according to one embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of a cleaning agent storage component according to another embodiment of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of a cleaning agent storage component according to another embodiment of the present invention.

[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; 212. Third water quality testing component; 22. Drain pipe; 221. Drain valve; 23. First directional valve; 301. Cleaning inlet; 302. Cleaning outlet; 31. Cleaning pipeline; 311. First cleaning pipe; 312. Second cleaning pipe; 32. Cleaning valve; 321. First cleaning valve; 322. Second cleaning valve; 33. Detergent storage component; 3301. Storage box; 3302. Chamber; 33021. First chamber; 33022. Second chamber 3303, Liquid inlet; 3304, Liquid outlet; 3305, Liquid inlet pipe; 3306, Liquid outlet pipe; 3307, Filter screen; 3308, Drain valve; 331, First cleaning agent storage component; 332, Second cleaning agent storage component; 34, Check valve; 341, First check valve; 342, Second check valve; 35, Manifold; 36, Diverter pipe; 361, Control valve; 4, Pre-filter unit; 5, Pure water outlet pipe; 51, Pure water usage component; 52, First water quality testing component; 61, Circulation pipe; 62, Circulation pump; 63, Second water quality testing component; 7, Second reversing valve. 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 invention, 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 invention. 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 invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly, for example, referring 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 invention according to the specific circumstances.

[0039] In view of the problems mentioned in the background art, existing water purification equipment suffers from low cleaning efficiency, poor cleaning effect, and detergent residue after cleaning, resulting in a poor user experience. Therefore, the present invention provides a water purification device.

[0040] like Figures 1 to 6 As shown, the water purification device of the present invention includes a reverse osmosis membrane filter element 2, a cleaning component, a circulation pipe 61, and a pure water component 51.

[0041] The cleaning component has a cleaning agent storage member 33 for storing cleaning agent. The cleaning component can be connected to the inlet end of the reverse osmosis membrane filter element 2 to deliver cleaning liquid to the reverse osmosis membrane filter element 2. The first end of the circulation pipe 61 is connected to the wastewater end of the reverse osmosis membrane filter element 2, and the second end of the circulation pipe 61 is connected to the cleaning component so that the cleaning component, the 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 cleaning circuit. The water purification equipment is configured to drive the cleaning liquid to circulate in the cleaning circuit.

[0042] The water purification equipment is configured to deliver water from the pure water end of the reverse osmosis membrane filter element 2 to the pure water consumption component 51 for users to drink. The water purification equipment is also configured to discharge water from the pure water end of the reverse osmosis membrane filter element 2 to the outside of the water purification equipment to prevent water flowing out from the pure water end of the reverse osmosis membrane filter element 2 from entering the pure water consumption component 51.

[0043] By setting up the circulation pipe 61, the cleaning component, the inlet end of the reverse osmosis membrane filter element 2, and the wastewater end of the reverse osmosis membrane filter element 2 can be connected in sequence to form a cleaning circuit. When the cleaning component cleans the reverse osmosis membrane filter element 2, the cleaning solution circulates in the cleaning circuit, effectively improving the cleaning effect of the reverse osmosis membrane filter element 2. At the same time, when the water purification equipment is in normal water production mode, the water from the pure water end of the reverse osmosis membrane filter element 2 is delivered to the pure water use component 51 for users to drink. After the cleaning component has finished cleaning the reverse osmosis membrane filter element 2, the water purification equipment can also discharge the pure water containing a small amount of cleaning agent that has permeated to the pure water end of the reverse osmosis membrane filter element 2 to the outside of the water purification equipment, thereby completely discharging the cleaning agent in the cleaning process, which helps to achieve zero pollution and zero chemical addition.

[0044] It should be noted that, in practical applications, the present invention does not limit the specific driving method for the water purification equipment to drive the cleaning liquid to circulate in the cleaning circuit. For example, a circulation pump 62 can be set on the cleaning circuit to drive the cleaning liquid to circulate in the cleaning circuit. Alternatively, the cleaning outlet 302 of the cleaning component can be set to be connected to the inlet end of the reverse osmosis membrane filter element 2 through the main water inlet 1 of the water purification equipment, and the cleaning liquid in the cleaning circuit can be driven to circulate through the booster pump 12 on the main water inlet 1, etc. Such flexible adjustments and changes do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0045] It should also be noted that, in practical applications, those skilled in the art can configure the reverse osmosis membrane filter element 2 to have two inlets, with the main inlet 1 and the cleaning outlet 302 respectively connected to the two inlets. Alternatively, the cleaning outlet 302 can be configured to be connected to the main inlet 1, with the cleaning component delivering the cleaning agent to the reverse osmosis membrane filter element 2 through the main inlet 1, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0046] Preferably, such as Figures 1 to 6 As shown, the cleaning component of the present invention has a cleaning outlet 302. The water purification equipment also includes a main water inlet 1, a circulation pump 62, and a booster pump 12 disposed on the main water inlet 1. The main water inlet 1 is connected to the water inlet end of the reverse osmosis membrane filter element 2. The cleaning outlet 302 is connected to the main water inlet 1 and is located at the downstream end of the booster pump 12. The circulation pump 62 is disposed on the cleaning circuit and is used to drive the liquid circulation flow in the cleaning circuit.

[0047] With this configuration, compared to the method of driving the liquid circulation flow in the cleaning circuit by the booster pump 12, the method of driving the liquid circulation flow in the cleaning circuit by setting the circulation pump 62 can prevent the cleaning liquid from entering the booster pump 12 and damaging the diaphragm of the booster pump 12, thereby avoiding affecting the service life of the booster pump 12. Furthermore, by setting the cleaning outlet 302 to be located at the downstream end of the booster pump 12, the cleaning liquid can be prevented from flowing through the booster pump 12 and damaging the diaphragm of the booster pump 12. Since the cost of the circulation pump 62 is much lower than that of the booster pump 12, the cost of the water purification equipment can be greatly reduced, further improving the user experience.

[0048] It should be noted that, in practical applications, those skilled in the art do not impose any limitations on the specific configuration type of the pure water component 51, as long as it can output pure water from the reverse osmosis membrane filter 2 for user consumption. For example, the pure water component 51 can be configured as a pure water tank, with pure water filtered by the reverse osmosis membrane filter 2 directly delivered to the pure water tank for user consumption. Alternatively, the pure water component 51 can be configured as a post-filter, with pure water filtered by the reverse osmosis membrane filter 2 delivered to the post-filter to improve taste before being delivered to the user. Or, the pure water component 51 can be configured as a water outlet component (water spout or faucet), with pure water filtered by the reverse osmosis membrane filter 2 flowing directly from the water outlet component (water spout or faucet), etc. Such adjustments and changes to the specific configuration type of the pure water component 51 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0049] Preferably, such as Figures 1 to 6As shown, the pure water component 51 includes a post-filter cartridge. Pure water filtered by the reverse osmosis membrane cartridge 2 is delivered to the post-filter cartridge to improve the taste before being supplied to the user for drinking.

[0050] It should be noted that, in practical applications, the present invention does not limit the specific configuration type of the cleaning component. For example, the cleaning component can be configured to have only a cleaning outlet 302, that is, a large amount of cleaning liquid can be directly stored in the cleaning agent storage component 33. When the reverse osmosis membrane filter element 2 needs to be cleaned, the cleaning agent stored in the cleaning agent storage component 33 flows out from the cleaning outlet 302 and is transported to the reverse osmosis membrane filter element 2. Alternatively, the cleaning component can be configured to include a cleaning pipeline 31 and a cleaning agent storage component 33 disposed on the cleaning pipeline 31. The two ends of the cleaning pipeline 31 form a cleaning inlet 301 and a cleaning outlet 302, respectively. Water is injected into the cleaning inlet 301 to form cleaning liquid in the cleaning agent storage component 33, etc. Such adjustments and changes to the specific configuration type of the cleaning component do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0051] Preferably, such as Figures 1 to 6 As shown, the cleaning assembly also includes a cleaning pipeline 31, with a cleaning inlet 301 and a cleaning outlet 302 formed at both ends of the cleaning pipeline 31. The cleaning inlet 301 is connected to the main water inlet 1 so that water in the main water inlet 1 enters the cleaning agent storage component 33 through the cleaning inlet 301 to form cleaning liquid. The cleaning outlet 302 is connected to the main water inlet 1 so that the cleaning liquid is transported to the reverse osmosis membrane filter element 2 through the cleaning outlet 302. The second end of the circulation pipe 61 is connected to the cleaning pipeline 31, and the circulation pump 62 is installed on the cleaning pipeline 31.

[0052] With this configuration, compared to setting the cleaning component to have only a cleaning outlet 302, setting the cleaning component to have both a cleaning inlet 301 and a cleaning outlet 302 allows the cleaning component to inject water into the cleaning inlet 301 to form cleaning fluid during cleaning. This avoids storing a large amount of cleaning fluid in the cleaning agent storage component 33, which would result in an excessively large cleaning component and further improves the user experience.

[0053] It should be noted that in practical applications, the circulation pump 62 is not limited to being installed on the cleaning pipeline 31. For example, the circulation pump 62 can also be installed on the circulation pipe 61, or on the main inlet pipeline 1 between the cleaning outlet 302 and the reverse osmosis membrane filter element 2, or on any other possible location in the cleaning circuit, etc. Such adjustments and changes to the specific location of the circulation pump 62 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0054] Preferably, the circulation pump 62 is installed on the cleaning pipeline 31.

[0055] It should be noted that, in practical applications, this application does not impose any restrictions on the specific structural form of the cleaning component, as long as it has a cleaning pipe 31 and a cleaning agent storage component 33, and the two ends of the cleaning pipe form a cleaning inlet 301 and a cleaning outlet 302.

[0056] The cleaning component of the present invention will be described below with reference to the following two embodiments.

[0057] Example 1:

[0058] like Figure 1 , Figure 3 and Figure 5 As shown, the cleaning assembly includes a cleaning pipeline 31 and a cleaning valve 32 and a cleaning agent storage component 33 arranged sequentially on the cleaning pipeline 31. The cleaning agent storage component 33 is located downstream of the cleaning valve 32 and is used to store acidic or alkaline cleaning agents. A circulation pump 62 is arranged on the cleaning pipeline 31.

[0059] When the cleaning unit cleans the reverse osmosis membrane filter element 2, the cleaning valve 32 is opened, and the water in the main inlet 1 enters the cleaning agent storage component 33 through the cleaning inlet 301, dissolving the cleaning agent stored in the cleaning agent storage component 33 to form a cleaning solution. The cleaning solution is then discharged through the cleaning outlet 302 and transported to the reverse osmosis membrane filter element 2. The reverse osmosis membrane filter element 2 is then soaked in the cleaning solution. After that, the cleaning valve 32 is closed, and the circulation pump 62 is started. The cleaning solution in the reverse osmosis membrane filter element 2 circulates in the cleaning circuit, rinsing the reverse osmosis membrane filter element 2 multiple times to remove the dirt on the reverse osmosis membrane filter element 2.

[0060] It should be noted that the installation of the circulation pump 62 is not limited to the cleaning pipeline 31. For example, the circulation pump 62 can also be installed on the circulation pipe 61, or on the main inlet water line between the cleaning component and the reverse osmosis membrane filter element 2, etc. Such adjustments and changes to the specific location of the circulation pump 62 in the cleaning circuit do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention. Of course, preferably, the circulation pump 62 is installed on the cleaning pipeline 31.

[0061] It should also be noted that the present invention does not limit the specific location of the circulation pump 62 and the detergent storage component 33. For example, the circulation pump 62 can be located upstream of the detergent storage component 33, or it can be located downstream of the detergent storage component 33, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0062] For example, the circulation pump 62 is located at the upstream end of the detergent storage component 33.

[0063] It should be noted that, in practical applications, those skilled in the art can store cleaning agents in the cleaning agent storage component 33 according to actual application needs. For example, acidic cleaning agents can be stored in the cleaning agent storage component 33, or alkaline cleaning agents can be stored in the cleaning agent storage component 33, etc. Such adjustments and changes to the type of cleaning agent in the cleaning agent storage component 33 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0064] It should also be noted that, in practical applications, those skilled in the art can configure the second end of the circulation pipe 61 to be connected to the upstream end of the cleaning valve 32, or the second end of the circulation pipe 61 to be connected to the downstream end of the cleaning valve 32, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0065] Preferably, the second end of the circulation pipe 61 is configured to communicate with the downstream end of the cleaning valve 32.

[0066] With this setup, when the circulation pump 62 is started, the cleaning valve 32 can be closed to prevent the cleaning fluid in the cleaning circuit from flowing back into the main water inlet 1 and thus contaminating the main water inlet 1.

[0067] Example 2:

[0068] like Figure 2 , Figure 4 and Figure 6 As shown, the cleaning assembly includes a manifold 35, at least two parallel cleaning lines 31, a cleaning valve 32 disposed on each cleaning line 31, and a cleaning agent storage component 33. The first ends of the multiple cleaning lines 31 converge to form a cleaning inlet 301, and the second ends of the multiple cleaning lines 31 converge and communicate with the manifold 35. The end of the manifold 35 forms a cleaning outlet 302. The cleaning agent storage component 33 is located downstream of the cleaning valve 32. The cleaning agent storage component 33 on each cleaning line 31 is used to store different types of cleaning agents. A circulation pump 62 is disposed on the manifold 35.

[0069] It should be noted that, in practical applications, the present invention does not limit the specific number of parallel cleaning pipelines 31. For example, two parallel cleaning pipelines 31 can be provided, each equipped with a cleaning valve 32 and a cleaning agent storage component 33. Alternatively, three parallel cleaning pipelines 31 can be provided, each equipped with a cleaning valve 32 and a cleaning agent storage component 33. Furthermore, multiple parallel cleaning pipelines 31 can be provided, each equipped with a cleaning valve 32 and a cleaning agent storage component 33. Such adjustments and changes to the specific number of parallel cleaning pipelines 31 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0070] The following description uses two parallel cleaning pipelines 31 as an example.

[0071] Specifically, such as Figure 2 , Figure 4 and Figure 6 As shown, the cleaning assembly includes a manifold 35, a first cleaning pipe 311 and a second cleaning pipe 312 arranged in parallel. The first cleaning pipe 311 is provided with a first cleaning valve 321 and a first cleaning agent storage component 331. The second cleaning pipe 312 is provided with a second cleaning valve 322 and a second cleaning agent storage component 332. The first end of the first cleaning pipe 311 and the first end of the second cleaning pipe 312 meet to form a cleaning inlet 301. The second end of the first cleaning pipe 311 and the second end of the second cleaning pipe 312 meet and communicate with the manifold 35. The end of the manifold 35 forms a cleaning outlet 302. The first cleaning agent storage component 331 is located downstream of the first cleaning valve 321 and is used to store acidic cleaning agent. The second cleaning agent storage component 332 is located downstream of the second cleaning valve 322 and is used to store alkaline cleaning agent. A circulation pump 62 is provided on the manifold 35.

[0072] It should be noted that the installation of the circulation pump 62 is not limited to the manifold 35. For example, the circulation pump 62 can also be installed on the circulation pipe 61, or on the main inlet water line between the cleaning component and the reverse osmosis membrane filter element 2, etc. Such adjustments and changes to the specific location of the circulation pump 62 in the cleaning circuit do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention. Of course, preferably, the circulation pump 62 is installed on the manifold 35.

[0073] It should be noted that, in practical applications, those skilled in the art can configure the second end of the circulation tube 61 to communicate with the upstream end of the first cleaning agent storage component 331 and the second cleaning agent storage component 332, or the second end of the circulation tube 61 can be configured to communicate with the downstream end of the first cleaning agent storage component 331 and the second cleaning agent storage component 332, etc. Such adjustments and changes to the specific connection positions of the second end of the circulation tube 61 with the first cleaning tube 311 and the second cleaning tube 312 do not deviate from the principles and scope of the present invention, and should all be included within the protection scope of the present invention.

[0074] Preferably, such as Figure 2 ,like Figure 4 and Figure 6 As shown, the cleaning assembly also includes a diversion pipe 36 and a control valve 361. The first end of the diversion pipe 36 forms a cleaning inlet 301. The first end of the first cleaning pipe 311 and the second end of the second cleaning pipe 312 meet and are connected to the second end of the diversion pipe 36. The second end of the circulation pipe 61 is connected to the second end of the diversion pipe 36. The control valve 361 is disposed on the diversion pipe 36 and is used to control the opening and closing of the diversion pipe 36.

[0075] With this configuration, the second end of the circulation pipe 61 can be connected to the upstream end of the first cleaning agent storage component 331 and the second cleaning agent storage component 332, thereby allowing the cleaning agent in the first cleaning agent storage component 331 and the second cleaning agent storage component 332 to be completely delivered to the reverse osmosis membrane filter element 2, improving the cleaning effect of the reverse osmosis membrane filter element 2. At the same time, the control valve 361 installed on the diversion pipe 36 can also prevent the cleaning liquid in the cleaning circuit from flowing back into the main water inlet 1 and contaminating the main water inlet 1.

[0076] It should be noted that when cleaning the reverse osmosis membrane filter element 2, an acidic cleaning agent can be used first, followed by an alkaline cleaning agent. Alternatively, an alkaline cleaning agent can be used first, followed by an acidic cleaning agent, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of this invention and should be included within the protection scope of this invention.

[0077] The following example illustrates the cleaning process of reverse osmosis membrane filter element 2, which involves first cleaning it with an acidic cleaning agent and then with an alkaline cleaning agent.

[0078] like Figure 2 , Figure 4 and Figure 6As shown, the first cleaning valve 321 is opened while the second cleaning valve 322 remains closed, allowing water from the main inlet 1 to enter the first cleaning pipe 311 and form a first cleaning solution (i.e., an acidic solution) in the first cleaning agent storage component 331. This solution is then discharged through the cleaning outlet 302 and transported to the reverse osmosis membrane filter element 2. At this point, the first cleaning pipe 311, 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 circuit. The circulation pump 62 is started to circulate the first cleaning solution within the cleaning circuit, soaking and rinsing the reverse osmosis membrane filter element 2 to remove inorganic dirt. After cleaning, the reverse osmosis membrane is removed from the filter element. The liquid inside filter element 2 is discharged and rinsed. Then, the first cleaning valve 321 is closed and the second cleaning valve 322 is opened, allowing water from the main inlet 1 to enter the second cleaning pipe 312 and form a second cleaning liquid (i.e., an alkaline solution) in the second cleaning agent storage component 332. At this time, the second cleaning pipe 312, the 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 cleaning circuit. The cleaning liquid is then discharged through the cleaning outlet 302 and transported to the reverse osmosis membrane filter element 2. The circulation pump 62 is started to make the second cleaning agent circulate in the cleaning circuit, soaking and rinsing the reverse osmosis membrane filter element 2 to remove organic dirt from it.

[0079] It should be noted that the present invention 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 substances, and those skilled in the art can make adjustments according to actual needs.

[0080] 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.

[0081] It should also be noted that the present invention 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 second cleaning liquid can also be other types of alkaline substances, and those skilled in the art can make adjustments according to actual needs.

[0082] It should also be noted that the present invention does not limit the form of the cleaning agent in the first cleaning agent storage component 331 and the second cleaning agent storage component 332. For example, the cleaning agent in both the first cleaning agent storage component 331 and the second cleaning agent storage component 332 can be in solid form, or the cleaning agent in both the first cleaning agent storage component 331 and the second cleaning agent storage component 332 can be in liquid form, or one of the first cleaning agent storage component 331 and the second cleaning agent storage component 332 can be in solid form and the other in liquid form, etc. Such adjustments and changes to the specific form of the cleaning agent stored in the first cleaning agent storage component 331 and the second cleaning agent storage component 332 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0083] Preferably, the cleaning agents stored in the first cleaning agent storage component 331 and the second cleaning agent storage component 332 are both in solid form.

[0084] More preferably, in order to accelerate the dissolution of the cleaning agent, the cleaning agent is in granular or powder form.

[0085] It should be noted that although the present invention uses the above two embodiments as examples to describe the specific form of the cleaning component, it is not restrictive. For example, the cleaning component may also include multiple cleaning pipes 31 and multiple cleaning agent storage components 33 disposed on the cleaning pipes, etc. Such adjustments and changes to the specific configuration of the cleaning component do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0086] Preferably, the cleaning assembly of the present invention further includes a first check valve 341, which is disposed between the cleaning outlet 302 and the circulation pump 62 and is used to resist the water pressure in the main water inlet 1.

[0087] Since the circulating pump 62 is not resistant to high pressure, when the water purification equipment is in normal water production mode, the water pressure in the main water inlet 1 is relatively high. By setting the first one-way valve 341, it can resist the high pressure in the main water inlet 1, avoid the phenomenon of water leakage caused by excessive water pressure, and further improve the user experience.

[0088] Preferably, the cleaning assembly of the present invention further includes a second one-way valve 342, which is disposed on at least a portion of the cleaning line 31 and is used to prevent liquid in the manifold 35 from flowing back into the cleaning agent storage member 33.

[0089] With this setup, when the cleaning agent in the cleaning agent storage component 33 on one of the cleaning pipelines 31 is used to clean the reverse osmosis membrane filter element 2, the second one-way valve 342 can prevent the liquid in the manifold 35 from flowing back into the cleaning agent storage component 33, thus avoiding premature dissolution of the cleaning agent and further improving the user experience.

[0090] It should be noted that the second check valve 342 can be installed on some of the cleaning pipelines 31, or on all of the cleaning pipelines 31.

[0091] Preferably, such as Figure 6 As shown, a second check valve 342 is installed on part of the cleaning pipeline 31, which can reduce the cost of the water purification equipment.

[0092] It should also be noted that the method is not limited to preventing liquid backflow into the detergent storage component 33 by setting a second one-way valve 342. For example, a check valve structure can also be set in the detergent storage component 33 to prevent water in the main water inlet 1 from entering the detergent storage component 33 through the cleaning outlet 302. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0093] When cleaning the reverse osmosis membrane filter element 2, after the cleaning solution is delivered into the reverse osmosis membrane filter element 2, the circulation pump 62 can be started directly to make the cleaning solution circulate in the cleaning circuit. Alternatively, the reverse osmosis membrane filter element 2 can be soaked with the cleaning solution first, and then the circulation pump 62 can be started to make the cleaning solution circulate in the cleaning circuit. Alternatively, the circulation pump 62 can be started intermittently. Such adjustments and changes to the cleaning method when cleaning the reverse osmosis membrane filter element 2 do not deviate from the principle and scope of the present invention, and should all be included within the protection scope of the present invention.

[0094] Preferably, a control valve (not shown in the figure) is also provided on the circulation pipe 61. When the water purification equipment is in normal water production mode, the control valve can prevent water in the wastewater outlet pipe 21 from flowing into the detergent storage component 33 through the circulation pipe 61.

[0095] Preferably, a third check valve (not shown in the figure) is also provided on the circulation pipe 61. The third check valve is configured to prevent water in the cleaning circuit from flowing back from the first end of the circulation pipe 61 to the second end of the circulation pipe 61.

[0096] It should be noted that, in practical applications, after the cleaning component has finished cleaning the reverse osmosis membrane filter element 2, the water from the pure water end of the reverse osmosis membrane filter element 2 can be directly discharged into the wastewater outlet pipe 21 of the water purification equipment, and then discharged to the outside of the water purification equipment through the wastewater outlet pipe 21. Alternatively, the water from the pure water end of the reverse osmosis membrane filter element 2 can be discharged into the wastewater outlet of the water purification equipment, thereby discharging the pure water containing cleaning agent to the outside of the water purification equipment. Or, the water from the pure water end of the reverse osmosis membrane filter element 2 can be directly discharged into the sewer in the user's usage scenario, thereby discharging the pure water containing cleaning agent to the outside of the water purification equipment, and so on. Such adjustments and changes to the specific discharge method of discharging the water from the pure water end of the reverse osmosis membrane filter element 2 to the outside of the water purification equipment do not deviate from the principles and scope of the present invention, and should all be included within the protection scope of the present invention.

[0097] Preferably, such as Figures 1 to 6 As shown, the water purification equipment also includes a wastewater outlet pipe 21, which is connected to the wastewater end of the reverse osmosis membrane filter element 2. The pure water end of the reverse osmosis membrane filter element 2 can be selectively connected to the pure water component 51 or the wastewater outlet pipe 21.

[0098] With this setup, after the cleaning component completes cleaning the reverse osmosis membrane filter element 2, the pure water end of the reverse osmosis membrane filter element 2 is first connected to the wastewater outlet pipe 21. This allows water containing a small amount of detergent residue flowing from the pure water end of the reverse osmosis membrane filter element 2 to be discharged into the wastewater outlet pipe 21, and then discharged to the outside of the water purification equipment. After the water containing a small amount of detergent residue is completely discharged, the pure water end of the reverse osmosis membrane filter element 2 is then connected to the pure water component 51. This allows the detergent from the cleaning process to be completely discharged, which helps to achieve zero pollution and zero chemical addition, further improving the user experience. In addition, by setting the pure water end of the reverse osmosis membrane filter element 2 to selectively connect to the pure water component 51 or the wastewater outlet pipe 21, the internal piping connection of the water purification equipment can be simplified, and the water from the pure water end of the reverse osmosis membrane filter element 2 can be discharged without the need for additional piping.

[0099] It should be noted that, in practical applications, the present invention does not impose any restrictions on the specific connection method of selectively connecting the pure water end of the reverse osmosis membrane filter element 2 to the pure water consumption component 51 or the wastewater outlet pipe 21, as long as it enables the pure water end of the reverse osmosis membrane filter element 2 to selectively connect to the pure water outlet pipe 5 or the wastewater outlet pipe 21.

[0100] In one specific embodiment, such as Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the water purification equipment also includes a pure water outlet pipe 5, a drain pipe 22, and a drain valve 221. 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. 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. 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.

[0101] In another specific embodiment, such as Figure 3 and Figure 4 As shown, the water purification equipment also includes a pure water outlet pipe 5, a drain pipe 22, and a first reversing valve 23. The first port of the first reversing valve 23 is connected to the pure water end of the reverse osmosis membrane filter element 2, the second port of the first reversing valve 23 is connected to the pure water outlet pipe 5, the third port of the first reversing valve 23 is connected to the first end of the drain pipe 22, the second end of the drain pipe 22 is connected to the wastewater outlet pipe 21, and the first port of the first reversing valve 23 can selectively connect to the second port or the third port.

[0102] It should be noted that in practical applications, when water containing a small amount of detergent residue from the pure water end of the reverse osmosis membrane filter element 2 is transported to the outside of the water purification equipment, it can be determined based on experience whether to transport water containing a small amount of detergent residue to the outside of the water purification equipment. Alternatively, the water quality information of the pure water flowing out from the pure water end of the reverse osmosis membrane filter element 2 can be detected to determine whether to transport water containing a small amount of detergent residue to the outside of the water purification equipment, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0103] Preferably, such as Figures 1 to 6 As shown, the water purification device of the present invention also includes a first water quality detection component 52, which is used to detect the water quality information of the pure water end of the reverse osmosis membrane filter element 2.

[0104] By setting the first water quality detection component 52, the water quality information of the pure water end of the reverse osmosis membrane filter element 2 can be accurately detected. Then, based on the water quality information of the pure water end of the reverse osmosis membrane filter element 2, the pure water end of the reverse osmosis membrane filter element 2 can be selectively connected to the pure water use component 51 or the wastewater outlet pipe 21. This not only thoroughly removes the cleaning agent in the reverse osmosis membrane filter element 2, but also saves water and further improves the user experience.

[0105] It should be noted that the first water quality detection component 52 can also determine whether the reverse osmosis membrane filter element 2 needs cleaning by detecting the pure water quality information of the pure water end of the reverse osmosis membrane filter element 2. When the reverse osmosis membrane filter element 2 needs cleaning, the cleaning component will be automatically activated or the user will be notified to manually activate the cleaning component to clean the reverse osmosis membrane filter element 2.

[0106] It should also be noted that the present invention does not limit the specific configuration type of the first water quality detection component 52. For example, the first water quality detection component 52 can be configured as a pH sensor, or it can be configured as a TDS sensor, or it can be configured as both a pH sensor and a TDS sensor, etc. Such adjustments and changes to the specific configuration type of the first water quality detection component 52 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0107] Preferably, the first water quality detection component 52 includes at least one of a pH sensor or a TDS sensor.

[0108] It should be noted that, in practical applications, those skilled in the art can place the first water quality detection component 52 on the pure water outlet pipe 5, or on the drain pipe 22, or between the reverse osmosis membrane filter element 2 and the first reversing valve 23, etc. Such adjustments and changes to the specific placement of the first water quality detection component 52 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0109] For example, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the first water quality detection component 52 is installed on the pure water outlet pipe 5.

[0110] For example, such as Figure 3 and Figure 4 As shown, the first water quality detection component 52 is disposed between the reverse osmosis membrane filter element 2 and the first reversing valve 23.

[0111] Preferably, the first water quality detection component 52 is communicatively connected to the drain valve 221 or the first reversing valve 23.

[0112] With this setup, the pure water end of the reverse osmosis membrane filter element 2 can be selectively connected to the pure water use component 51 or the wastewater outlet pipe 21 by adjusting the drain valve 221 or the reversing valve 23 based on the detection results of the first water quality detection component 52, making the water purification equipment more intelligent and further improving the user experience.

[0113] It should be noted that, in practical applications, those skilled in the art can configure the first water quality detection component 52 and the drain valve 221 (or the first reversing valve 23) to communicate with the controller of the water purification equipment, or they can configure the first water quality detection component 52 and the drain valve 221 (or the first reversing valve 23) to communicate with the user's mobile device (tablet or mobile phone), etc. Such adjustments and changes to the specific connection method of the first water quality detection component 52 and the drain valve 221 or the first reversing valve 23 do not deviate from the principles and scope of the present invention, and should all be included within the protection scope of the present invention.

[0114] Preferably, the first water quality detection component 52 and the drain valve 221 (or the first reversing valve 23) are both connected to the controller of the water purification equipment.

[0115] It should be noted that, in practical applications, the present invention does not impose any limitations on the specific connection method between the first end of the circulation pipe 61 and the wastewater end of the reverse osmosis membrane filter element 2. For example, the first end of the circulation pipe 61 can be set to be directly connected to the wastewater outlet pipe 21, or the first end of the circulation pipe 61 can be set to be connected to the wastewater end of the reverse osmosis membrane filter element 2 through the wastewater outlet pipe 21, etc. Such flexible adjustments and changes do not deviate from the principle and scope of the present invention and should all be included within the protection scope of the present invention.

[0116] Preferably, the first end of the circulation pipe 61 is connected to the wastewater end of the reverse osmosis membrane filter element 2 through the wastewater outlet pipe 21, and the liquid in the cleaning circuit can also be discharged through the wastewater outlet pipe 21.

[0117] With this setup, the cleaning components, the inlet of the reverse osmosis membrane filter element 2, and the wastewater outlet of the reverse osmosis membrane filter element 2 can be connected in sequence to form a cleaning circuit, which facilitates the cleaning of the reverse osmosis membrane filter element 2. After cleaning is completed, the cleaning liquid in the cleaning circuit can be discharged through the wastewater outlet pipe 21, thus eliminating the need for additional drainage pipes.

[0118] The following describes the specific ways in which the first end of the circulation pipe 61 is connected to the wastewater end of the reverse osmosis membrane filter element 2 through the wastewater outlet pipe 21, using the following two scenarios as examples.

[0119] Scenario 1:

[0120] like Figures 1 to 4 As shown, the wastewater outlet pipe 21 is connected to the wastewater end of the reverse osmosis membrane filter element 2, and the first end of the circulation pipe 61 is connected to the wastewater outlet pipe 21.

[0121] By setting up a wastewater outlet pipe 21, during normal water production, the wastewater produced by the reverse osmosis membrane filter element 2 flows out through the wastewater outlet pipe 21. When the reverse osmosis membrane filter element 2 is cleaned, the cleaning wastewater can also flow out through the wastewater outlet pipe 21. The cleaning wastewater in the reverse osmosis membrane filter element 2 can be discharged without adding additional drainage components to the water purification equipment, thus reducing the cost of the water purification equipment. Setting the circulation pipe 61 to be connected to the wastewater outlet pipe 21 can simplify the pipeline connection of the water purification equipment.

[0122] It should be noted that, in practical applications, those skilled in the art can set the first end of the circulation pipe 61 to be located upstream of the wastewater valve 211, or they can set the first end of the circulation pipe 61 to be located downstream of the wastewater valve 211, etc. Such adjustments and changes to the specific setting positions of the first end of the circulation pipe 61 and the wastewater valve 211 do not deviate from the principles and scope of the present invention, and should all be included within the protection scope of the present invention.

[0123] Preferably, such as Figures 1 to 4 As shown, the water purification equipment also includes a wastewater valve 211 installed on the wastewater outlet pipe 21, and the first end of the circulation pipe 61 is located at the upstream end of the wastewater valve 211.

[0124] With this configuration, when the cleaning component cleans the reverse osmosis membrane filter element 2, it can prevent the dirt removed from the cleaning component from entering the wastewater valve 211 and causing the wastewater valve 211 to become clogged, thereby extending the service life of the wastewater valve 211.

[0125] It should be noted that, in practical applications, those skilled in the art can configure the wastewater valve 211 to have a shut-off function. When the reverse osmosis membrane filter element 2 needs to be cleaned, the flow of the wastewater outlet pipe 21 can be controlled by adjusting the wastewater valve 211 to prevent water in the reverse osmosis membrane filter element 2 from flowing out through the wastewater outlet pipe 21. Alternatively, a shut-off valve can be installed on the wastewater outlet pipe 21. When the reverse osmosis membrane filter element 2 needs to be cleaned, the shut-off valve can be closed to prevent water in the reverse osmosis membrane filter element 2 from flowing out through the wastewater outlet pipe 21. Such adjustments and changes to the specific configuration of the wastewater valve 211 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0126] Preferably, the water purification equipment also includes a shut-off valve (not shown in the figure), which is installed on the wastewater outlet pipe 21 and is used to control the opening and closing of the wastewater outlet pipe 21.

[0127] Scenario 2:

[0128] like Figure 5 and Figure 6 As shown, the wastewater end of the reverse osmosis membrane filter element 2 can be selectively connected to the first end of the wastewater outlet pipe 21 or the circulation pipe 61.

[0129] With this setup, when the water purifier is in normal water production mode, the wastewater end of the reverse osmosis membrane filter element 2 is connected to the wastewater outlet pipe 21, and the filtered wastewater flows out through the wastewater outlet pipe 21. When the water purifier is in cleaning mode, the wastewater end of the reverse osmosis membrane filter element 2 is connected to the first end of the circulation pipe 61, so that the cleaning component, the 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 cleaning loop, thereby enabling convenient switching between water production mode and cleaning mode, and further improving the user experience.

[0130] It should be noted that, in practical applications, this invention does not impose any limitations on the specific connection method by which the wastewater end of the reverse osmosis membrane filter element 2 can selectively connect to the first end of the wastewater outlet pipe 21 or the circulation pipe 61. For example, a second reversing valve 7 can be provided, wherein the first port of the second reversing valve 7 is connected to the wastewater end of the reverse osmosis membrane filter element 2, the second port of the second reversing valve 7 is connected to the wastewater outlet pipe 21, and the third port of the second reversing valve 7 is connected to the first end of the circulation pipe 61. Alternatively, a three-way pipe can be provided, with the first end of the three-way pipe connected to the wastewater end of the reverse osmosis membrane filter element 2, and the second and third ends of the three-way pipe respectively connected to the first end of the wastewater outlet pipe 21 or the circulation pipe 61. A first valve and a second valve are respectively provided on the wastewater outlet pipe 21 and the circulation pipe 61, so that the wastewater end of the reverse osmosis membrane filter element 2 can selectively connect to the first end of the wastewater outlet pipe 21 or the circulation pipe 61, etc. Such flexible adjustments and changes do not deviate from the principles and scope of this invention and should be included within the protection scope of this invention.

[0131] Preferably, such as Figure 5 and Figure 6 As shown, the water purification equipment also includes a second reversing valve 7, wherein the first port of the second reversing valve 7 is connected to the wastewater end of the reverse osmosis membrane filter element 2, the second port of the second reversing valve 7 is connected to the wastewater outlet pipe 21, the third port of the second reversing valve 7 is connected to the first end of the circulation pipe 61, and the first port of the second reversing valve 7 can selectively connect to the second port or the third port.

[0132] This setup simplifies pipe connections and enhances the simplicity of the water purification equipment.

[0133] Preferably, such as Figures 1 to 6 As shown, the water purification device of the present invention further includes a second water quality detection component 63, which is disposed on the cleaning circuit and used to detect water quality information in the cleaning circuit.

[0134] With this setup, when the cleaning component cleans the reverse osmosis membrane filter element 2, the cleaning solution circulates within the cleaning circuit and repeatedly flushes the reverse osmosis membrane filter element 2. The dirt on the reverse osmosis membrane filter element 2 is broken down and enters the cleaning solution, circulating within the cleaning circuit with it. Since the degree of contamination of the reverse osmosis membrane filter element 2 differs depending on whether the water purification equipment is used in an area with good water quality or an area with poor water quality, the cleaning time also varies. By setting up a second water quality detection component 63, the water quality information of the cleaning solution within the cleaning circuit can be detected. When the water quality within the cleaning circuit no longer changes, it indicates that the dirt on the reverse osmosis membrane filter element 2 no longer enters the cleaning solution, signifying that the cleaning of the reverse osmosis membrane filter element 2 is complete. This allows for accurate termination of the cleaning process based on the degree of contamination of the reverse osmosis membrane filter element 2. On the one hand, it avoids insufficient cleaning time, which would prevent the complete removal of dirt from the reverse osmosis membrane filter element 2; on the other hand, it avoids excessive cleaning time, which would lead to energy waste.

[0135] It should be noted that, in practical applications, those skilled in the art can configure the second water quality detection component 63 as a TDS sensor, or as a turbidity sensor, or as any other possible detection device, etc. Such adjustments and changes to the specific configuration of the second water quality detection component 63 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0136] Preferably, the second water quality detection component 63 is a turbidity sensor.

[0137] It should be noted that, in practical applications, the present invention does not impose any limitations on the specific placement of the second water quality detection component 63 in the cleaning circuit, as long as it can detect water quality information within the cleaning circuit. For example, the second water quality detection component 63 can be placed on the circulation pipe 61, or on the cleaning pipeline 31, or on the main inlet pipeline 1 between the cleaning outlet 302 and the inlet end of the reverse osmosis membrane filter element 2, etc. Such adjustments and changes to the specific placement of the second water quality detection component 63 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0138] For example, such as Figures 1 to 6 As shown, the second water quality detection component 63 is installed on the circulation pipe 61.

[0139] Preferably, the second water quality detection component 63 is installed on the wastewater outlet pipe 21 and located at the upstream end of the circulation pipe 61. In this way, the second water quality detection component 63 can detect the water quality information in both the cleaning loop and the wastewater outlet pipe 21, saving the number of water quality detection components used and reducing the cost of the water purification equipment.

[0140] It should be noted that after the cleaning component has finished cleaning the reverse osmosis membrane filter element 2, the cleaning liquid in the cleaning circuit can flow out through the wastewater outlet pipe 21. After the cleaning liquid in the cleaning circuit is drained, the water in the main inlet pipe 1 is then allowed to enter the reverse osmosis membrane filter element 2 to rinse the reverse osmosis membrane filter element 2, thereby rinsing out the residual cleaning agent in the reverse osmosis membrane filter element 2. The rinsing wastewater also flows out through the wastewater outlet pipe 21.

[0141] Preferably, such as Figures 1 to 6 As shown, the water purification equipment also includes a third water quality detection component 212, which is installed on the wastewater outlet pipe 21 and is used to detect the water quality information in the wastewater outlet pipe 21.

[0142] By setting a third water quality detection component 212, when the wastewater generated from rinsing the reverse osmosis membrane filter element 2 enters the wastewater outlet pipe 21, the water quality information in the wastewater outlet pipe 21 can be detected. Thus, based on the detection data of the third water quality detection component 212, it can be determined whether the residual cleaning agent in the reverse osmosis membrane filter element 2 has been rinsed clean, thereby saving water resources.

[0143] It should be noted that, in practical applications, those skilled in the art can configure the third water quality detection component 212 as a TDS sensor, or as a pH sensor, or as any other possible detection device, etc. Such adjustments and changes to the specific configuration of the third water quality detection component 212 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0144] For example, the third water quality detection component 212 is a TDS sensor.

[0145] It should be noted that, in practical applications, the present invention does not impose any limitations on the specific location of the third water quality detection component 212 on the wastewater outlet pipe 21. For example, the third water quality detection component 212 can be located upstream of the wastewater valve 211, or it can be located downstream of the wastewater valve 211, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0146] For example, such as Figures 1 to 6As shown, the third water quality detection component 212 is located at the upstream end of the wastewater valve 211.

[0147] Preferably, the water purification device of the present invention 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 2, thereby removing the dirt from the reverse osmosis membrane filter element 2.

[0148] 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.

[0149] It should be noted that, in practical applications, the present invention does not limit 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.

[0150] In one specific embodiment, the auxiliary cleaning component includes a heating module, wherein the heating module is disposed on the cleaning circuit.

[0151] 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.

[0152] It should be noted that the present invention 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 33, etc. Such adjustments and changes to the specific location of the heating module do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0153] 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.

[0154] 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.

[0155] It should be noted that, in practical applications, the present invention does not impose any limitations on the specific structural form of the cleaning agent storage component 33, as long as it can store the cleaning agent. For example, the cleaning agent storage component 33 can be configured to have only a cavity 3302, in which the cleaning agent is stored. Alternatively, the cleaning agent storage component 33 can be configured to have a cavity 3302, and when it is in the first working state, it can store the cleaning agent in the cavity 3302, and when it is in the second working state, it can collect impurities in the cleaning circuit into the cavity 3302, etc. Such adjustments and changes to the specific configuration type of the cleaning agent storage component 33 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0156] Preferably, such as Figures 7 to 9 As shown, the cleaning agent storage member 33 of the present invention has a cavity 3302. The cleaning agent storage member 33 is configured to store cleaning agent in the cavity 3302 when it is in a first working state and to collect impurities in the cleaning circuit into the cavity 3302 when it is in a second working state.

[0157] With this setup, when cleaning of the reverse osmosis membrane filter element 2 is not required, the cleaning agent can be stored in the chamber 3302. When the cleaning component cleans the reverse osmosis membrane filter element 2, water from the main inlet channel 1 enters the chamber 3302, dissolving the cleaning agent to form a cleaning solution. Under the action of the circulation pump 62, the cleaning solution circulates within the cleaning circuit, thereby washing away the dirt on the surface of the reverse osmosis membrane filter element 2. When the dirt flows with the cleaning solution within the cleaning circuit and into the chamber 3302, the washed-off impurities are collected in the chamber 3302, preventing secondary contamination of the reverse osmosis membrane filter element 2 by the washed-off impurities, and further improving the cleaning effect of the cleaning component on the reverse osmosis membrane filter element 2.

[0158] It should be noted that, in practical applications, those skilled in the art can configure the cleaning agent storage component 33 to include a storage box 3301 and a filter screen 3307 disposed within the storage box 3301, with a cavity 3302 formed within the storage box 3301, and the filter screen 3307 allowing the cleaning liquid to flow out from the cavity 3302 while preventing impurities from flowing out from the cavity 3302. Alternatively, the cleaning agent storage component 33 can be configured simply as a storage box 3301, with a cavity 3302 formed within the storage box 3301, and multiple through holes for the cleaning liquid to pass through on one side of the storage box 3301, etc. Such adjustments and changes to the specific structural form of the cleaning agent storage component 33 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0159] Preferably, such as Figures 7 to 9As shown, the cleaning agent storage component 33 of the present invention includes a storage box 3301 and a filter screen 3307. A cavity 3302 is formed in the storage box 3301. The filter screen 3307 allows the cleaning liquid to flow out from the cavity 3302 and prevents impurities from flowing out from the cavity 3302.

[0160] It should be noted that filter 3307 can also prevent undissolved or clumped cleaning agents from passing through, thereby preventing lumpy cleaning agents from entering the reverse osmosis membrane filter element 2 and puncturing the filter membrane of the reverse osmosis membrane filter element 2, further improving the user experience.

[0161] It should be noted that, in practical applications, the present invention does not impose any limitations on the specific placement of the filter screen 3307, as long as it allows the cleaning liquid to flow out of the cavity 3302 and prevents impurities from flowing out of the cavity 3302. For example, the filter screen 3307 can be configured to divide the cavity 3302 into a first chamber 33021 and a second chamber 33022 that are sequentially distributed along the water flow direction.

[0162] The following is combined Figures 7 to 9 The specific location of filter 3307 is described in detail.

[0163] Scenario 1:

[0164] like Figure 7 As shown, the storage box 3301 has a liquid inlet 3303 and a liquid outlet 3304. The filter screen 3307 is disposed in the storage box 3301 and divides the cavity 3302 into a first chamber 33021 and a second chamber 33022 that are spaced apart in the horizontal direction. The first chamber 33021 is connected to the liquid inlet 3303, and the second chamber 33022 is connected to the liquid outlet 3304.

[0165] When the cleaned dirt enters the first chamber 33021 through the inlet 3303 along with the cleaning liquid, the cleaning liquid can flow into the second chamber 33022 through the filter screen 3307 and flow out through the outlet 3304. The dirt (impurities) are intercepted by the filter screen 3307 and collected in the first chamber 33021.

[0166] Of course, filter 3307 can also be placed near the liquid outlet 3304.

[0167] Scenario 2:

[0168] like Figure 8As shown, the filter screen 3307 is disposed in the storage box 3301 and divides the cavity 3302 into a first chamber 33021 and a second chamber 33022 distributed in a vertical direction. The storage box 3301 also includes a liquid inlet 3303 and a liquid outlet pipe 3306. The liquid inlet 3303 is connected to the first chamber 33021, and the liquid outlet pipe 3306 extends into the second chamber 33022 and is connected to the second chamber 33022.

[0169] When the cleaned dirt enters the first chamber 33021 through the inlet 3303 along with the cleaning liquid, the cleaning liquid can flow into the second chamber 33022 through the filter screen 3307 and flow out through the outlet pipe 3306. The dirt (impurities) are intercepted by the filter screen 3307 and collected in the first chamber 33021.

[0170] Scenario 3:

[0171] like Figure 9 As shown, the filter screen 3307 is disposed in the storage box 3301 and divides the cavity 3302 into a first chamber 33021 and a second chamber 33022 arranged in sequence along the vertical direction. The storage box 3301 also includes an inlet pipe 3305 and an outlet 3304. The inlet pipe 3305 extends into the second chamber 33022 and communicates with the second chamber 33022. The outlet 3304 communicates with the first chamber 33021.

[0172] When the cleaned dirt enters the second chamber 33022 along with the cleaning fluid through the inlet pipe 3305, the cleaning fluid can flow into the first chamber 33021 through the filter screen 3307 and flow out through the outlet 3304, while the dirt is intercepted by the filter screen 3307 and collected in the second chamber 33022.

[0173] It should be noted that although the present invention describes the specific structure of the cleaning agent storage component 33 using the above three embodiments, this is not restrictive. Any other form that allows the cleaning liquid to flow out of the cavity 3302 and prevents impurities from flowing out of the cavity 3302 does not depart from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0174] Preferably, the storage box is also provided with a drain outlet, and the cleaning agent storage component 33 also includes a drain valve 3308 provided at the drain outlet so as to open or close the drain outlet.

[0175] By setting the drain valve 3308, the drain port can be easily opened after the reverse osmosis membrane filter element 2 has been cleaned, so that the impurities collected in the chamber can be discharged through the drain port, avoiding the growth of bacteria and further improving the user experience.

[0176] Preferably, the storage box is also provided with a feeding port, and the cleaning agent storage component 33 also includes a cover placed on the feeding port so that the user can open the feeding port to add cleaning agent.

[0177] Preferably, such as Figures 1 to 4 As shown, the water purification device of the present invention also includes a pre-filter unit 4, the outlet of the pre-filter unit 4 is connected to the main water inlet 1, and the cleaning inlet 301 is located at the downstream end of the pre-filter unit 4.

[0178] With this configuration, by placing the cleaning inlet 301 downstream of the pre-filter unit 4, the purified water filtered by the pre-filter unit 4 can enter the cleaning agent storage component 33 through the cleaning inlet 301. The purified water filtered by the pre-filter unit 4 can be used to dissolve the cleaning agent, thereby improving the solubility of the cleaning agent and the cleanliness of the cleaning solution, thus effectively improving the cleaning effect of the reverse osmosis membrane filter element 2.

[0179] 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 flexible adjustments and changes do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0180] Preferably, the pre-filter unit 4 is a pre-filter cartridge.

[0181] Preferably, such as Figures 1 to 4 As shown, the water purification equipment also includes an inlet valve 11 installed on the main inlet water line 1, with a cleaning inlet 301 located at the upstream end of the inlet valve 11 and a cleaning outlet 302 located at the downstream end of the inlet valve 11.

[0182] With this setup, when the reverse osmosis membrane filter element 2 needs to be cleaned, the water in the main water inlet 1 can be prevented from directly entering the reverse osmosis membrane filter element 2 by controlling the water inlet valve 11, thereby avoiding dilution of the cleaning solution entering the reverse osmosis membrane filter element 2.

[0183] It should be noted that in practical applications, the arrangement is not limited to placing the cleaning inlet 301 upstream of the inlet valve 11 and the cleaning outlet 302 downstream of the inlet valve 11. For example, both the cleaning inlet 301 and the cleaning outlet 302 can be placed upstream of the inlet valve 11, or both can be placed downstream of the inlet valve 11, and so on. Such adjustments and changes to the relative positions of the cleaning components and the inlet valve 11 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention. Preferably, the cleaning inlet 301 is placed upstream of the inlet valve 11, and the cleaning outlet 302 is placed downstream of the inlet valve 11.

[0184] It should also be noted that, in practical applications, those skilled in the art can place the booster pump 12 upstream of the inlet valve 11, or they can place the booster pump 12 downstream of the inlet valve 11, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0185] Preferably, such as Figures 1 to 4 As shown, the booster pump 12 is located upstream of the inlet valve 11, and the cleaning inlet 301 is located between the booster pump 12 and the inlet valve 11.

[0186] By placing the booster pump 12 upstream of the inlet valve 11 and placing the cleaning inlet 301 between the booster pump 12 and the inlet valve 11, the cleaning inlet 301 can be located downstream of the booster pump 12. This facilitates the pumping of water from the main inlet channel 1 into the cleaning assembly and then into the reverse osmosis membrane filter element 2 via the booster pump 12, thereby improving cleaning efficiency and cleaning effect.

[0187] It should be noted that, in practical applications, those skilled in the art can configure the water purification device 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 device do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0188] For example, the water purification device is a water purifier.

[0189] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A water purification device, characterized in that, The water purification equipment includes: Reverse osmosis membrane filter cartridge; A cleaning component having a cleaning agent storage member for storing cleaning agent, the cleaning component being able to communicate with the inlet end of the reverse osmosis membrane filter element to deliver cleaning solution to the reverse osmosis membrane filter element; A circulation pipe, the first end of which is connected to the wastewater end of the reverse osmosis membrane filter element, and the second end of which is connected to the cleaning component, so that the cleaning component, the inlet end of the reverse osmosis membrane filter element, and the wastewater end are sequentially connected to form a cleaning loop; the water purification equipment is configured to drive the cleaning liquid to circulate within the cleaning loop; and Pure water supply components; The water purification device is configured to deliver water from the pure water end of the reverse osmosis membrane filter element to the pure water consumption component for user drinking, and the water purification device is also configured to discharge water from the pure water end of the reverse osmosis membrane filter element to the outside of the water purification device.

2. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes a wastewater outlet pipe, which is connected to the wastewater end of the reverse osmosis membrane filter element. The pure water end of the reverse osmosis membrane filter element can be selectively connected to the pure water component or the wastewater outlet pipe.

3. The water purification equipment according to claim 2, characterized in that, The water purification equipment also includes a pure water outlet pipe, a drain pipe, and a drain valve. 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. 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. The drain valve is installed on the drain pipe and is used to control the opening and closing of the drain pipe. Alternatively, the water purification equipment may further include a pure water outlet pipe, a drain pipe, and a first reversing valve. The first port of the first reversing valve is connected to the pure water end of the reverse osmosis membrane filter element, the second port of the first reversing valve is connected to the pure water outlet pipe, the third port of the first reversing valve is connected to the first end of the drain pipe, the second end of the drain pipe is connected to the wastewater outlet pipe, and the first port of the first reversing valve can selectively connect to the second port or the third port.

4. The water purification equipment according to claim 2, characterized in that, The water purification equipment also includes a wastewater valve installed on the wastewater outlet pipe. The wastewater outlet pipe is connected to the wastewater end of the reverse osmosis membrane filter element. The first end of the circulation pipe is connected to the wastewater outlet pipe and is located upstream of the wastewater valve. And / or, the wastewater end of the reverse osmosis membrane filter element can be selectively connected to the wastewater outlet pipe or the first end of the circulation pipe.

5. The water purification equipment according to claim 1, characterized in that, The cleaning component has a cleaning outlet, and the water purification equipment also includes a main water inlet, a circulation pump, and a booster pump installed on the main water inlet. The main water inlet is connected to the water inlet end of the reverse osmosis membrane filter element. The cleaning outlet is connected to the main water inlet and is located downstream of the booster pump. The circulation pump is installed on the cleaning circuit and is used to drive the liquid circulation flow within the cleaning circuit.

6. The water purification equipment according to claim 5, characterized in that, The cleaning assembly also includes a cleaning pipeline with a cleaning inlet and a cleaning outlet at its two ends. The cleaning inlet is connected to the main water inlet so that water in the main water inlet can enter the cleaning agent storage component to form a cleaning solution. The cleaning outlet is connected to the main water inlet so that the cleaning solution in the cleaning agent storage component can enter the reverse osmosis membrane filter element through the main water inlet. The second end of the circulation pipe is connected to the cleaning pipeline.

7. The water purification equipment according to claim 6, characterized in that, The cleaning assembly includes a cleaning pipeline and a cleaning valve and a cleaning agent storage component disposed on the cleaning pipeline. The two ends of the cleaning pipeline form the cleaning inlet and the cleaning outlet, respectively. The cleaning agent storage component is located downstream of the cleaning valve and is used to store acidic or alkaline cleaning agents. Alternatively, the cleaning assembly includes a manifold, at least two parallel cleaning lines, a cleaning valve and a cleaning agent storage component on each of the cleaning lines, with the first ends of the plurality of cleaning lines converging and communicating with the cleaning inlet, the second ends of the plurality of cleaning lines converging and communicating with the manifold, the end of the manifold forming the cleaning outlet, and the cleaning agent storage component located downstream of the cleaning valve, with the cleaning agent storage component on each of the cleaning lines used to store different types of cleaning agents.

8. The water purification equipment according to claim 2, characterized in that, The water purification equipment also includes a first water quality detection component, which is used to detect the water quality information of the pure water end of the reverse osmosis membrane filter element; And / or, the water purification device further includes a second water quality detection component, which is used to detect water quality information within the cleaning circuit; And / or, the water purification equipment further includes a third water quality detection component, which is disposed on the wastewater outlet pipe and used to detect the water quality information in the wastewater outlet pipe.

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, thereby removing the dirt from the reverse osmosis membrane filter element.

10. The water purification equipment according to any one of claims 1 to 9, characterized in that, The cleaning agent storage component has a cavity, and the cleaning agent storage component is configured to store cleaning agent in the cavity when it is in a first working state and to collect impurities in the cleaning circuit into the cavity when it is in a second working state.

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