Water purifying apparatus

Abstract

This invention relates to the field of water purification technology, specifically providing a water purification device aimed at solving the problem of cleaning agent residue in the main water purification pipeline after cleaning the reverse osmosis membrane filter element in existing water purification devices. The water purification device of this invention includes a main inlet pipeline, a reverse osmosis membrane filter element, and a pure water outlet pipe. The first end of the main inlet pipeline is connected to a water source, and the second end is connected to the inlet end of the reverse osmosis membrane filter element. The pure water outlet pipe is connected to the pure water end of the reverse osmosis membrane filter element. The cleaning component has a cleaning outlet and is capable of delivering cleaning liquid to the reverse osmosis membrane filter element. When the cleaning component cleans the reverse osmosis membrane filter element, the cleaning outlet is not connected to the main inlet pipeline and the pure water outlet pipe to prevent the cleaning liquid from flowing through them. This application enables the cleaning liquid to prevent it from flowing through the main inlet pipeline and the pure water outlet pipe, thereby avoiding contamination of these pipelines and preventing cleaning liquid residue in the water purification pipeline.

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 dispensers, 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 grime, extending its lifespan.

[0004] However, when existing water purification equipment uses cleaning agents to clean the reverse osmosis membrane filter cartridges, the cleaning agent solution is generally directly transported into the reverse osmosis membrane filter cartridge through the main water purification pipeline. This results in cleaning agent residue in the main water purification pipeline. As users' water demand gradually increases, the cleaning agent residue in the main water purification pipeline will affect the user experience. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems to at least a certain extent, that is, to solve the problem that the user experience is affected by the fact that the cleaning agent is easy to remain in the main water supply line after the reverse osmosis membrane filter element is cleaned by the cleaning agent in the existing water purification equipment.

[0006] In a first aspect, the present invention provides a water purification device, which includes a main water inlet, a reverse osmosis membrane filter element, and a pure water outlet pipe. A first end of the main water inlet is connected to a water source, a second end of the main water inlet is connected to the water inlet end of the reverse osmosis membrane filter element, and the pure water outlet pipe is connected to the pure water end of the reverse osmosis membrane filter element. The water purification device further includes a cleaning component, which has a cleaning outlet and is capable of delivering cleaning liquid to the reverse osmosis membrane filter element to clean it. The water purification device is configured such that when the cleaning component cleans the reverse osmosis membrane filter element, the cleaning outlet is not connected to the main water inlet and the pure water outlet pipe to prevent the cleaning liquid from flowing through the main water inlet and the pure water outlet pipe.

[0007] In the preferred embodiment of the above-mentioned water purification equipment, the reverse osmosis membrane filter element includes a housing and a reverse osmosis membrane assembly disposed within the housing. The housing is provided with a first water inlet, a second water inlet, and a pure water outlet. The second end of the main water inlet is connected to the first water inlet, the pure water outlet is connected to the pure water outlet, and the cleaning outlet is connected to the second water inlet. A check valve is provided at the first water inlet to prevent the cleaning liquid in the reverse osmosis membrane filter element from flowing back into the main water inlet. Alternatively, the water purification equipment includes a first reversing valve, the first port of which is connected to the second end of the main water inlet, and the second port of which is connected to... The cleaning outlet is connected, and the third port of the first reversing valve is connected to the inlet end of the reverse osmosis membrane filter element. The third port of the first reversing valve can selectively connect to the first port or the second port. Alternatively, the water purification equipment further includes a connecting member, which has a cavity and a first port, a second port, and a third port connected to the cavity. The second end of the main water inlet is connected to the first port, the cleaning outlet is connected to the second port, and the third port is connected to the inlet end of the reverse osmosis membrane filter element. The connecting member is configured to prevent liquid in the cavity from flowing back into the main water inlet through the first port.

[0008] In the preferred embodiment of the above-mentioned water purification equipment, the connecting member is configured such that when it is in the first working state, it allows liquid in the main water inlet to enter the cavity through the first port and prevents liquid in the cavity from flowing back into the cleaning component through the second port; the connecting member is configured such that when it is in the second working state, it allows liquid in the cleaning component to enter the cavity through the second port and prevents liquid in the cavity from flowing back into the main water inlet through the first port.

[0009] In the preferred embodiment of the above-mentioned water purification equipment, the connecting member further includes a backflow preventer, a first blocking structure, and a second blocking structure. The backflow preventer is pivotally connected to the inner wall of the cavity. The first blocking structure is disposed near the first pipe opening, and the second blocking structure is disposed near the second pipe opening. When the backflow preventer abuts against the first blocking structure, the connecting member allows liquid in the cleaning component to enter the cavity and prevents liquid in the cavity from flowing back through the first pipe opening into the main water inlet. When the backflow preventer abuts against the second blocking structure, the connecting member allows liquid in the main water inlet to enter the cavity and prevents liquid in the cavity from flowing back through the second pipe opening into the cleaning component.

[0010] In the preferred embodiment of the above-mentioned water purification equipment, the cleaning component has a cleaning agent storage component and a cleaning inlet. The cleaning agent storage component is used to store cleaning agent, and the cleaning inlet is connected to the main water inlet so that water in the main water inlet enters the cleaning agent storage component through the cleaning inlet, thereby dissolving the cleaning agent to form the cleaning liquid.

[0011] 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 to form the cleaning inlet, and 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, and the cleaning agent storage component on each of the cleaning pipelines is used to store different types of cleaning agents.

[0012] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a circulation pipe and a circulation pump. The first end of the circulation pipe is connected to the wastewater end of the reverse osmosis membrane filter element, and the second end of the circulation pipe is connected to the upstream end of the detergent storage component. The detergent storage component, the reverse osmosis membrane filter element, and the circulation pipe are sequentially connected to form a cleaning circuit. The circulation pump is installed on the cleaning circuit and is used to drive the liquid circulation flow in the cleaning circuit.

[0013] In the preferred embodiment of the above-mentioned water purification equipment, the detergent storage component has a cavity, and the detergent storage component is configured to store detergent 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; and / or, the circulation pump is provided on the cleaning pipeline or the manifold.

[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; and / or, the water purification equipment further includes a pre-filtration unit, the outlet of which is connected to the first end of the main water inlet, and the cleaning inlet of the cleaning component is located at the downstream end of the pre-filtration unit.

[0015] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a return pipe and a return valve. One end of the return pipe is connected to the pure water end of the reverse osmosis membrane filter element, and the other end of the return pipe is connected to the main water inlet. The return valve is installed on the return pipe and is used to control the opening and closing of the return pipe. Alternatively, the water purification equipment further includes a drain pipe and a drain valve. One end of the drain pipe is connected to the pure water outlet pipe, and the other end of the drain pipe is connected to the wastewater outlet pipe of the water purification equipment. The drain valve is installed on the drain pipe and is used to control the opening and closing of the drain pipe.

[0016] When the above-mentioned preferred technical solution is adopted, the cleaning solution can prevent the cleaning solution from flowing through the main inlet water pipe and the pure water outlet pipe when the cleaning component cleans the reverse osmosis membrane filter element. This avoids the cleaning solution from contaminating the main inlet water pipe and the pure water outlet pipe of the water purification equipment, and thus avoids the cleaning solution remaining in the water production pipeline. Compared with the prior art in which the cleaning solution is transported to the reverse osmosis membrane filter element through the main inlet water pipe, this application can achieve zero pollution and zero chemical addition, which greatly improves the user experience.

[0017] Furthermore, by configuring the reverse osmosis membrane filter element with a first inlet and a second inlet, when the water purification equipment is in normal water production mode, the water in the main water inlet is delivered to the reverse osmosis membrane filter element through the first inlet. When the reverse osmosis membrane filter element needs to be cleaned, the cleaning solution is delivered to the reverse osmosis membrane filter element through the second inlet. This makes the water production pipeline and the cleaning pipeline completely independent of each other, avoiding the residue of cleaning agent in the water production pipeline.

[0018] Furthermore, by setting a first reversing valve, when the water purification equipment is in normal water production mode, the first port of the first reversing valve is connected to the third port, so that the water in the main water inlet enters the reverse osmosis membrane filter element. When it is necessary to clean the reverse osmosis membrane filter element, the second port of the first reversing valve is connected to the third port, so that the cleaning liquid in the cleaning component enters the reverse osmosis membrane filter element, making the water production pipeline and the cleaning pipeline independent of each other, and avoiding the residue of cleaning liquid in the water production pipeline.

[0019] Furthermore, by setting up a connecting component, when the reverse osmosis membrane filter needs to be cleaned, the cleaning solution can enter the cavity through the second port and prevent the cleaning solution in the cavity from flowing back into the main water inlet through the first port, thereby preventing the cleaning solution from contaminating the main water inlet. When the water purification equipment is in normal water production mode, the water in the main water inlet can enter the cavity through the first port and prevent the water in the cavity from flowing back into the cleaning component through the second port, avoiding premature dissolution of the cleaning agent in the cleaning component and further improving the user experience.

[0020] Furthermore, by setting up circulation pipes and circulation pumps, the cleaning solution can circulate within the cleaning circuit, thereby circulating and flushing the reverse osmosis membrane filter element, improving the cleaning efficiency and effect of the reverse osmosis membrane filter element, and further enhancing the user experience.

[0021] Furthermore, by configuring the cleaning agent storage component to store the cleaning agent in the cavity when it is in the first working state and to collect impurities in the cleaning circuit into the cavity when it is in the second working state, the cleaning agent can be stored in the cavity when the reverse osmosis membrane filter element does not need to be cleaned. When the cleaning component cleans the reverse osmosis membrane filter element, the stored cleaning agent is dissolved to form a cleaning liquid, which circulates in the cleaning circuit, thereby washing off the dirt on the surface of the reverse osmosis membrane filter element. As the dirt flows in the cleaning circuit with the cleaning liquid, the cleaning agent storage component can also collect the washed-off impurities into the cavity, preventing the washed-off impurities from re-entering the reverse osmosis membrane filter element during the circulation process and causing secondary pollution to the reverse osmosis membrane filter element, thus improving the cleaning effect of the cleaning component on the reverse osmosis membrane filter element. Attached Figure Description

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of one embodiment of the water purification device of the present invention;

[0024] Figure 2 This is a schematic diagram of another embodiment of the water purification device of the present invention;

[0025] Figure 3 This is a schematic diagram of one embodiment of the water purification device of the present invention;

[0026] Figure 4 This is a schematic diagram of another embodiment of the water purification device of the present invention;

[0027] Figure 5 This is a schematic diagram of one embodiment of the water purification device of the present invention;

[0028] Figure 6 This is a schematic diagram of another embodiment of the water purification device of the present invention;

[0029] Figure 7 yes Figure 1 A schematic diagram of another cleaning mode in China;

[0030] Figure 8 yes Figure 2 A schematic diagram of another cleaning mode in China;

[0031] Figure 9 yes Figure 3 A schematic diagram of another cleaning mode in China;

[0032] Figure 10 yes Figure 4 A schematic diagram of another cleaning mode in China;

[0033] Figure 11 yes Figure 5 A schematic diagram of another cleaning mode in China;

[0034] Figure 12 yes Figure 6 A schematic diagram of another cleaning mode in China;

[0035] Figure 13 This is a structural schematic diagram of one embodiment of the connecting member of the present invention. Figure 1 The diagram shows the positional relationship of each component when the connecting component is in its first working state.

[0036] Figure 14 This is a structural schematic diagram of one embodiment of the connecting member of the present invention. Figure 1 The diagram shows the positional relationship of each component when the connecting component is in the second working state.

[0037] Figure 15 This is a structural schematic diagram of another embodiment of the connecting member of the present invention. Figure 1 The diagram shows the positional relationship of each component when the connecting component is in its first working state.

[0038] Figure 16 This is a structural schematic diagram of another embodiment of the connecting member of the present invention. Figure 1 The diagram shows the positional relationship of each component when the connecting component is in the second working state.

[0039] Figure 17 This is a schematic diagram of the structure of one embodiment of the cleaning agent storage component of the present invention;

[0040] Figure 18 This is a schematic diagram of one embodiment of the cleaning agent storage component of the present invention;

[0041] Figure 19 This is a schematic diagram of another embodiment of the cleaning agent storage component of the present invention;

[0042] Figure 20 This is a structural schematic diagram of yet another embodiment of the cleaning agent storage component of the present invention.

[0043] List of reference numerals in the attached diagram:

[0044] 1. Main water inlet; 11. Inlet valve; 12. Booster pump; 2. Reverse osmosis membrane filter element; 201. First inlet; 202. Second inlet; 203. Pure water outlet; 21. Wastewater outlet pipe; 211. Wastewater valve; 22. Drain pipe; 221. Drain valve; 23. Return pipe; 231. Return valve; 301. Cleaning inlet; 302. Cleaning outlet; 31. Cleaning pipeline; 311. First cleaning pipe; 312. Second cleaning pipe; 32. Cleaning valve; 321. First cleaning valve; 322. Second cleaning valve; 33. Cleaning agent storage component; 3301. Storage box; 3302. Chamber; 33021. First chamber; 33022. Second chamber; 3303. Liquid inlet; 3304. Liquid outlet; 3305. Liquid inlet pipe 3306, Drain pipe; 3307, Filter component; 3308, Door; 3309, Dispensing port; 331, First detergent storage component; 332, Second detergent storage component; 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 user component; 61, Circulation pipe; 62, Circulation pump; 7, First reversing valve; 8, Connecting component; 801, First port; 802, Second port; 803, Third port; 81, Cavity; 821, First check plate; 822, First blocking structure; 831, Second check plate; 832, Second blocking structure; 84, Check element; 9, Second reversing valve. Detailed Implementation

[0045] 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.

[0046] 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.

[0047] 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.

[0048] Based on the existing water purification equipment mentioned in the background art, when cleaning the reverse osmosis membrane filter element with detergent, the detergent solution flows through the main water purification pipeline, resulting in detergent residue in the main water purification pipeline. The residual detergent will affect the user's drinking water safety, thus leading to a poor user experience. The present invention provides a water purification device.

[0049] like Figures 1 to 6 As shown, the water purification device of the present invention includes a main water inlet 1, a reverse osmosis membrane filter element 2, and a pure water outlet pipe 5. The first end of the main water inlet 1 is connected to a water source, the second end of the main water inlet 1 is connected to the water inlet end of the reverse osmosis membrane filter element 2, and the pure water outlet pipe 5 is connected to the pure water end of the reverse osmosis membrane filter element 2.

[0050] The water purification equipment also includes a cleaning component, which has a cleaning outlet 302 and is capable of delivering cleaning liquid to the reverse osmosis membrane filter element 2 to clean the reverse osmosis membrane filter element 2. The water purification equipment is configured such that when the cleaning component is cleaning the reverse osmosis membrane filter element 2, the cleaning outlet 302 is not connected to the main water inlet 1 and the pure water outlet pipe 5 to prevent the cleaning liquid from flowing through the main water inlet 1 and the pure water outlet pipe 5.

[0051] With this configuration, when the cleaning component cleans the reverse osmosis membrane filter element 2, the cleaning liquid does not flow through the main inlet water line 1 and the pure water outlet pipe 5, thereby preventing the cleaning liquid from contaminating the main inlet water line 1 and the pure water outlet pipe 5 of the water purification equipment, and thus preventing the cleaning liquid from remaining in the water production pipeline. Compared with the existing technology in which the cleaning liquid is transported to the reverse osmosis membrane filter element 2 through the main inlet water line 1, this application can achieve zero pollution and zero chemical addition, greatly improving the user experience.

[0052] It should be noted that the present invention does not limit the specific method of preventing the cleaning liquid from flowing through the main water inlet 1, as long as the cleaning component can deliver the cleaning liquid to the reverse osmosis membrane filter element 2 and prevent the cleaning liquid from flowing through the main water inlet 1 and the pure water outlet pipe 5.

[0053] The following three embodiments will be described in detail.

[0054] Example 1:

[0055] like Figure 1 and Figure 2 As shown, the reverse osmosis membrane filter element 2 includes a housing and a reverse osmosis membrane assembly disposed within the housing. The housing is provided with a first water inlet 201, a second water inlet 202 and a pure water outlet 203. The second end of the main water inlet 1 is connected to the first water inlet 201, the pure water outlet pipe 5 is connected to the pure water outlet 203, and the cleaning outlet 302 is connected to the second water inlet 202. A backflow preventer is provided at the first water inlet 201 to prevent the cleaning liquid in the reverse osmosis membrane filter element 2 from flowing back into the main water inlet 1.

[0056] By configuring the reverse osmosis membrane filter element 2 with a first inlet 201 and a second inlet 202, when the water purification equipment is in normal water production mode, the water in the main water inlet 1 is transported to the reverse osmosis membrane filter element 2 through the first inlet 201. When the reverse osmosis membrane filter element 2 needs to be cleaned, the cleaning solution is transported to the reverse osmosis membrane filter element 2 through the second inlet 202. This makes the water production pipeline and the cleaning pipeline 31 completely independent of each other, avoiding the residue of cleaning agent in the water production pipeline.

[0057] Example 2:

[0058] like Figure 3 and Figure 4 As shown, the water purification equipment includes a first reversing valve 7. The first port of the first reversing valve 7 is connected to the second end of the main water inlet 1, the second port of the first reversing valve 7 is connected to the clean outlet 302, and the third port of the first reversing valve 7 is connected to the water inlet of the reverse osmosis membrane filter element 2. The third port of the first reversing valve 7 can selectively connect to the first port or the second port.

[0059] By setting the first reversing valve 7, when the water purification equipment is in normal water production mode, the first port of the first reversing valve 7 is connected to the third port, so that the water in the main water inlet 1 enters the reverse osmosis membrane filter element 2. When the reverse osmosis membrane filter element 2 needs to be cleaned, the second port of the first reversing valve 7 is connected to the third port, so that the cleaning liquid in the cleaning component enters the reverse osmosis membrane filter element 2, making the water production pipeline and the cleaning pipeline 31 independent of each other, and avoiding the residue of cleaning liquid in the water production pipeline.

[0060] Example 3:

[0061] like Figure 5 and Figure 6 As shown, the water purification equipment also includes a connecting component 8, which has a cavity 81 and a first port 801, a second port 802 and a third port 803 connected to the cavity 81. The second end of the main water inlet 1 is connected to the first port 801, the cleaning outlet 302 is connected to the second port 802, and the third port 803 is connected to the water inlet end of the reverse osmosis membrane filter element 2. The connecting component 8 is configured to prevent the liquid in the cavity 81 from flowing back into the main water inlet 1 through the first port 801.

[0062] It should be noted that the connecting member 8 can be configured to prevent the liquid in the cavity 81 from flowing back into the main water inlet 1 through the first port 801. Alternatively, the connecting member 8 can be configured to allow the liquid in the main water inlet 1 to enter the cavity 81 through the first port 801 and prevent the liquid in the cavity 81 from flowing back into the cleaning component through the second port 802 when it is in the first working state. The connecting member 8 is also configured to allow the liquid in the cleaning component to enter the cavity 81 through the second port 802 and prevent the liquid in the cavity 81 from flowing back into the main water inlet 1 through the first port 801 when it is in the second working state.

[0063] Preferably, the connecting member 8 is configured to allow liquid in the main water inlet 1 to enter the cavity 81 through the first port 801 and prevent liquid in the cavity 81 from flowing back into the cleaning component through the second port 802 when it is in the first working state. The connecting member 8 is also configured to allow liquid in the cleaning component to enter the cavity 81 through the second port 802 and prevent liquid in the cavity 81 from flowing back into the main water inlet 1 through the first port 801 when it is in the second working state.

[0064] With this setup, when the reverse osmosis membrane filter element 2 needs cleaning, the cleaning solution can enter the cavity 81 through the second port 802, preventing the cleaning solution in the cavity 81 from flowing back into the main water inlet 1 through the first port 801. This prevents the cleaning solution from contaminating the main water inlet 1. When the water purification equipment is in normal water production mode, the water in the main water inlet 1 can enter the cavity 81 through the first port 801, preventing the water in the cavity 81 from flowing back into the cleaning component through the second port 802. This avoids the cleaning agent in the cleaning component dissolving prematurely, further improving the user experience.

[0065] It should be noted that, in practical applications, the present invention does not impose any limitations on the specific configuration type of the connecting member 8, as long as it can allow the liquid in the main water inlet 1 to enter the cavity 81 through the first port 801 and prevent the liquid in the cavity 81 from flowing back into the cleaning component through the second port 802 when it is in the first working state, and allow the liquid in the cleaning component to enter the cavity 81 through the second port 802 and prevent the liquid in the cavity 81 from flowing back into the main water inlet 1 when it is in the second working state.

[0066] In one specific embodiment, such as Figure 13 and Figure 14As shown, the connecting component 8 also includes a first check plate 821, a second check plate 831, a first blocking structure 822, and a second blocking structure 832. The first check plate 821 and the first blocking structure 822 are located at the first pipe opening 801, while the second check plate 831 and the second blocking structure 832 are located at the second pipe opening 802. When the first check plate 821 detaches from the first blocking structure 822, the first check plate 821 allows liquid from the main water inlet 1 to enter the cavity through the first pipe opening 801. Inside 81, when the second check plate 831 abuts against the second blocking structure 832, it can prevent the liquid in the cavity 81 from flowing back into the cleaning assembly through the second port 802. When the second check plate 831 is detached from the second blocking structure 832, the second check plate 831 can allow the liquid in the cleaning assembly to enter the cavity 81 through the second port 802. When the first check plate 821 abuts against the first blocking structure 822, it can prevent the liquid in the cavity 81 from flowing back into the main water inlet 1 through the first port 801.

[0067] In another specific implementation, such as Figure 15 and Figure 16 As shown, the connecting member 8 also includes a check element 84, a first blocking structure 822, and a second blocking structure 832 disposed within the cavity 81. The check element 84 is pivotally connected to the inner wall of the cavity 81. The first blocking structure 822 is disposed near the first port 801, and the second blocking structure 832 is disposed near the second port 802. When the check element abuts against the first blocking structure 822, the connecting member 8 allows liquid in the cleaning assembly to enter the cavity 81 and prevents liquid in the cavity 81 from flowing back through the first port 801 to the main water inlet 1. When the check element 84 abuts against the second blocking structure 832, the connecting member 8 allows liquid in the main water inlet 1 to enter the cavity 81 and prevents liquid in the cavity 81 from flowing back through the second port 802 to the cleaning assembly.

[0068] It should be noted that, in practical applications, those skilled in the art can configure the check element 84 as a check valve plate, or as a check valve ball, etc. Such adjustments and changes to the specific structural form of the check element 84 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0069] Preferably, the check element 84 is the check valve plate.

[0070] It should be noted that the present invention does not limit the specific structural form of the first blocking structure 822 and the second blocking structure 832. For example, the first blocking structure 822 and the second blocking structure 832 can be configured as a block, or they can be configured as a blocking groove formed in the cavity 81. Alternatively, one of the first blocking structure 822 and the second blocking structure 832 can be configured as a block, and the other as a blocking groove, etc. Such adjustments and changes to the specific structural form of the first blocking structure 822 and the second blocking structure 832 do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0071] Preferably, both the first blocking structure 822 and the second blocking structure 832 are stop blocks.

[0072] Preferably, the connecting member 8 further includes a sealing gasket, which is disposed on the check valve plate to improve the sealing performance of the check valve plate.

[0073] Preferably, the connecting member 8 of the present invention further includes a magnetic attracting element disposed on the anti-reverse element 84, a first magnetic attracting member disposed on the first blocking structure 822, and a second magnetic attracting member disposed on the second blocking structure 832 (not shown in the figure). When the magnetic attracting element is attracted to the first magnetic attracting member, the anti-reverse element 84 can be abutted against the first blocking structure 822. When the magnetic attracting element is attracted to the second magnetic attracting member, the anti-reverse element 84 can be abutted against the second blocking structure 832.

[0074] With this configuration, when the connecting member 8 is in the first working state, the anti-reverse element 84 can more stably abut against the first blocking structure 822 to prevent the cleaning liquid in the cavity 81 from flowing back into the main water inlet 1 through the gap between the anti-reverse element 84 and the cavity 81. When the connecting member 8 is in the second working state, the anti-reverse element 84 can more stably abut against the second blocking structure 832 to prevent the water in the cavity 81 from flowing back into the cleaning agent storage member 33 through the gap between the anti-reverse element 84 and the cavity 81, further improving the user experience.

[0075] It should be noted that all three embodiments described above can prevent the cleaning solution from flowing through the main water inlet 1. At the same time, the cleaning solution flowing into the reverse osmosis membrane filter element 2 will not flow out from the pure water outlet pipe 5. Therefore, the cleaning solution will not flow through the pure water outlet pipe 5.

[0076] It should be noted that, in practical applications, those skilled in the art can configure the cleaning component to have a cleaning agent storage component 33 and a cleaning outlet 302, directly storing the cleaning solution in the cleaning agent storage component 33. When the reverse osmosis membrane filter element 2 needs cleaning, the cleaning solution is then transported to the reverse osmosis membrane filter element 2 through the cleaning outlet 302. Alternatively, the cleaning component can be configured to have a cleaning agent storage component 33, a cleaning inlet 301, and a cleaning outlet 302. An external water source is transported to the cleaning agent storage component 33 through the cleaning inlet 301 to dissolve the cleaning agent in the cleaning agent storage component 33 to form a cleaning solution. When the reverse osmosis membrane filter element 2 needs cleaning, the cleaning solution is then transported to the reverse osmosis membrane filter element 2 through the cleaning outlet 302, and so on. 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.

[0077] Preferably, such as Figures 1 to 6 As shown, the cleaning assembly has a cleaning agent storage component 33 and a cleaning inlet 301. The cleaning agent storage component 33 is used to store cleaning agent, and 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, thereby dissolving the cleaning agent to form a cleaning solution.

[0078] By configuring the cleaning component in this way, compared to configuring the cleaning component in the form of only having a cleaning agent storage component 33 and a cleaning outlet 302, it is possible to avoid storing a large amount of cleaning liquid in the cleaning agent storage component 33, reduce the volume of the cleaning component, help save installation space for the water purification equipment, and further improve the user experience.

[0079] It should be noted that the cleaning inlet 301 is not limited to being connected to the main water inlet 1. For example, the user can add water to the cleaning inlet 301 on the detergent storage component 33 to dissolve the detergent, or the cleaning inlet 301 can be connected to an external water source to add water to the detergent storage component 33 to dissolve the detergent, 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. Of course, it is preferable that the cleaning inlet 301 is connected to the main water inlet 1.

[0080] Preferably, the specific structure of the cleaning component of the present invention will be described below in conjunction with the following two scenarios.

[0081] Example 1:

[0082] like Figure 1 , Figure 3 and Figure 5As shown, the cleaning assembly includes a cleaning pipeline 31 and a cleaning valve 32 and a cleaning agent storage component 33 sequentially arranged on the cleaning pipeline 31. The two ends of the cleaning pipeline 31 form a cleaning inlet 301 and a cleaning outlet 302, respectively. The cleaning agent storage component 33 is located downstream of the cleaning valve 32 and is used to store acidic or alkaline cleaning agents.

[0083] When the cleaning component cleans the reverse osmosis membrane filter element 2, the cleaning valve 32 is opened, and the water in the main water inlet 1 enters the cleaning agent storage component 33 through the cleaning inlet 301 and dissolves 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, and the reverse osmosis membrane filter element 2 is then soaked in the cleaning solution.

[0084] 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 or alkaline cleaning agents can be stored in the cleaning agent storage component 33.

[0085] Example 2:

[0086] 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, and the cleaning agent storage component 33 on each cleaning line 31 is used to store different types of cleaning agents.

[0087] 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.

[0088] The following description uses two parallel cleaning pipelines 31 as an example.

[0089] 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 connected 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.

[0090] 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 solutions, and those skilled in the art can make adjustments according to actual needs.

[0091] 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.

[0092] 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 solutions, and those skilled in the art can make adjustments according to actual needs.

[0093] Specifically, when cleaning the reverse osmosis membrane filter element 2, the first cleaning valve 321 (or the second cleaning valve 322) is opened, so that the water in the main water inlet 1 enters the cleaning agent storage component 33 through the cleaning inlet 301, and is then transported to the reverse osmosis membrane filter element 2 through the cleaning outlet 302 to soak the reverse osmosis membrane filter element 2 for cleaning.

[0094] It should be noted that the method of cleaning the reverse osmosis membrane filter element 2 is not limited to soaking it in a cleaning solution. For example, the water purification equipment can be configured to circulate the cleaning solution in the cleaning loop to clean the reverse osmosis membrane filter element 2. Such adjustments and changes to the specific cleaning method of the cleaning solution for the reverse osmosis membrane filter element 2 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0095] Preferably, such as Figures 7 to 12 As shown, the water purification device of the present invention also includes a circulation pipe 61 and a circulation pump 62. 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 upstream end of the detergent storage component 33. The detergent storage component 33, the reverse osmosis membrane filter element 2 and the circulation pipe 61 are connected in sequence to form a cleaning circuit. The circulation pump 62 is installed on the cleaning circuit and is used to drive the liquid circulation flow in the cleaning circuit.

[0096] By setting up circulation pipe 61 and circulation pump 62, the cleaning solution can circulate within the cleaning circuit, thereby circulating and flushing the reverse osmosis membrane filter element 2, improving the cleaning efficiency and effect of the reverse osmosis membrane filter element 2, and further enhancing the user experience.

[0097] It should be noted that the present invention does not limit the specific location of the circulation pump 62 in the cleaning circuit. For example, the circulation pump 62 can be set on the circulation pipe 61, or it can be set on the cleaning pipe 31, or it can be set on the manifold 35, etc. Such adjustments and changes to the specific location of the circulation pump 62 in the cleaning circuit do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0098] Preferably, the circulation pump 62 is installed on the cleaning line 31 or the manifold 35.

[0099] This configuration avoids placing the circulation pump 62 on the circulation pipe 61, thus preventing excessive water pressure in the circulation pipe 61 due to excessive water pressure at the wastewater end of the reverse osmosis membrane filter 2 when the water purifier is in normal water production mode. This also prevents leakage of the circulation pump 62 due to excessive water pressure, further improving the user experience.

[0100] Preferably, such as Figures 1 to 2 , Figures 4 to 8 , Figures 10 to 12 As shown, the cleaning assembly of the present invention also includes a first one-way valve 341 disposed on the cleaning pipeline 31. The first one-way valve 341 can prevent water at the downstream end of the cleaning agent storage component 33 from flowing back into the cleaning agent storage component 33.

[0101] By setting the first one-way valve 341, when the water purification equipment is in normal water production mode, it can prevent the water in the reverse osmosis membrane filter element 2 from flowing back into the detergent storage component 33, thereby preventing the detergent in the detergent storage component 33 from dissolving prematurely and further improving the user experience.

[0102] Preferably, such as Figure 7 and Figure 8 As shown, for the case where the reverse osmosis membrane filter element has a first inlet 201 and a second inlet 202, the water purification equipment also includes a second one-way valve 342, which is located between the clean outlet 302 and the circulation pump 62 and can withstand the high pressure inside the reverse osmosis membrane filter element 2.

[0103] With this setup, when the water purifier is in normal water production mode, the high water pressure inside the reverse osmosis membrane filter element 2 allows the second one-way valve 342 to resist the high pressure inside the reverse osmosis membrane filter element 2, preventing the circulation pump 62 from leaking due to excessive water pressure, thus further improving the user experience.

[0104] Preferably, such as Figure 8 , Figure 10 and Figure 12 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 communicate with 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 provided on the diversion pipe 36 and is used to control the opening and closing of the diversion pipe 36.

[0105] 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 further prevent the cleaning liquid in the cleaning circuit from flowing back into the main water inlet 1 and contaminating the main water inlet 1.

[0106] 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.

[0107] 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.

[0108] like Figure 8 , Figure 10 and Figure 12 As 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 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 drained 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, which is then 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.

[0109] It should be noted that when cleaning the reverse osmosis membrane filter element 2, the circulation pump 62 can be started directly to circulate the cleaning solution in the cleaning circuit to flush the reverse osmosis membrane filter element 2. Alternatively, the reverse osmosis membrane filter element 2 can be soaked in the cleaning solution for a certain period of time before the circulation pump 62 is started to circulate the cleaning solution in the cleaning circuit to flush the reverse osmosis membrane filter element 2. Such adjustments and changes to the specific cleaning method of the reverse osmosis membrane filter element 2 do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0110] It should be noted that the present invention does not impose any restrictions 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, as long as the first end of the circulation pipe 61 can be connected to the wastewater end of the reverse osmosis membrane filter element 2.

[0111] The following two scenarios will be discussed in detail.

[0112] Scenario 1:

[0113] like Figures 6 to 12As shown, the water purification device of the present invention also includes a wastewater outlet pipe 21 and a wastewater valve 211 installed on the wastewater outlet pipe 21, and the first end of the circulation pipe 61 is connected to the wastewater outlet pipe 21.

[0114] By setting up wastewater outlet pipe 21 and wastewater valve 211, when the water purification equipment is in normal water production mode, the wastewater produced by filtration is discharged through wastewater outlet pipe 21. When the water purification equipment cleans the reverse osmosis membrane filter element 2, the wastewater produced by cleaning can also be discharged through wastewater outlet pipe 21, eliminating the need for a separate wastewater pipe to discharge cleaning waste liquid, further improving the user experience.

[0115] It should be noted that the present invention does not limit the specific location of the circulation pipe 61 and the wastewater valve 211 on the wastewater outlet pipe 21. For example, the wastewater valve 211 can be located at the upstream end of the circulation pipe 61, or at the downstream end of the circulation pipe 61, etc. Such adjustments and changes to the specific location of the circulation pipe 61 and the wastewater valve 211 do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0116] Preferably, such as Figures 6 to 12 As shown, the first end of the circulation pipe 61 is located upstream of the wastewater valve 211.

[0117] Scenario 2:

[0118] like Figure 8 , Figure 10 and Figure 12 As shown, the water purification equipment also includes a second reversing valve 9 and a wastewater outlet pipe 21. The first port of the second reversing valve 9 is connected to the wastewater end of the reverse osmosis membrane filter element 2, the second port of the second reversing valve 9 is connected to the wastewater outlet pipe 21, and the third port of the second reversing valve 9 is connected to the first end of the circulation pipe 61. The first port of the second reversing valve 9 can be selectively connected to the second port or the third port.

[0119] Preferably, the cleaning agent storage member 33 has a cavity 3302, and the cleaning agent storage member 33 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 3302 when it is in a second working state.

[0120] 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. When the cleaning component cleans the reverse osmosis membrane filter element 2, the stored cleaning agent is dissolved to form a cleaning solution, which circulates in the cleaning circuit, thereby washing away the dirt on the surface of the reverse osmosis membrane filter element 2. As the dirt flows in the cleaning circuit with the cleaning solution, the cleaning agent storage component 33 can also collect the washed-off impurities into the chamber 3302, preventing the washed-off impurities from re-entering the reverse osmosis membrane filter element 2 during the circulation process and causing secondary pollution to the reverse osmosis membrane filter element 2, thus improving the cleaning effect of the cleaning component on the reverse osmosis membrane filter element 2.

[0121] It should be noted that the first working state is the working state in which the reverse osmosis membrane filter element 2 is not cleaned, for example, it can be the normal water production mode, sterilization mode or flushing mode. The second working state is the working state in which the reverse osmosis membrane filter element 2 is cleaned. The cleaning agent storage component 33 of the present invention can store the cleaning agent in the cleaning agent storage component 33 when the reverse osmosis membrane filter element 2 is not cleaned. When the reverse osmosis membrane filter element 2 needs to be cleaned, the cleaning agent stored in the cleaning agent storage component 33 is dissolved, thereby utilizing the space originally used to store the cleaning agent to collect impurities. This can make full use of the space of the cleaning agent storage component 33, which helps to reduce the size of the water purification equipment and greatly improves the user experience.

[0122] The cleaning agent storage component of the present invention will be described below with reference to the following two embodiments.

[0123] Example 1:

[0124] like Figure 17 As shown, the cleaning agent storage component 33 of the present invention includes a storage box 3301 and a filter component 3307. The storage box 3301 has a liquid inlet 3303 and a liquid outlet 3304. The filter component 3307 is disposed at the liquid outlet 3304. A cavity 3302 is formed inside the storage box 3301. When the cleaning agent storage component 33 is in a first working state, the cleaning agent can be stored in the cavity 3302. When the cleaning agent storage component 33 is in a second working state, the filter component 3307 can collect solids in the cleaning circuit into the cavity 3302.

[0125] Preferably, the storage box 3301 is provided with a drain outlet, which is connected to the cavity 3302. The cleaning agent storage component 33 also includes a door 3308, which is located at the drain outlet and can open or close the drain outlet.

[0126] By setting up a drain outlet and a chamber door 3308, after cleaning the reverse osmosis membrane filter element 2, it is easy to open the chamber door 3308 and clean out the dirt collected in the second chamber 33022 through the drain outlet, avoiding the growth of bacteria and further improving the user experience.

[0127] Preferably, the storage box 3301 is also provided with a dispensing port 3309, which is connected to the cavity 3302 so that the user can dispense cleaning agent into the cavity 3302 through the dispensing port 3309.

[0128] By setting up the dispensing port 3309, users can easily add cleaning agent into the cavity 3302 through the dispensing port 3309 when the cleaning agent is insufficient, thus avoiding the cleaning of the reverse osmosis membrane filter element 2 due to insufficient cleaning agent and further improving the user experience.

[0129] Example 2:

[0130] like Figures 18 to 20 As shown, the cleaning agent storage component 33 of the present invention includes a storage box 3301 and a filter component 3307. A cavity 3302 is formed in the storage box 3301. The filter component 3307 is disposed in the storage box 3301 and divides the cavity 3302 into a first chamber 33021 and a second chamber 33022. When the cleaning agent storage component 33 is in a first working state, the cleaning agent can be stored in the first chamber 33021 and / or the second chamber 33022. When the cleaning agent storage component 33 is in a second working state, the filter component 3307 can collect solids in the cleaning circuit into the second chamber 33022.

[0131] It should be noted that although both of the above embodiments can both store cleaning agent and collect impurities in the cleaning circuit, compared with the form in which the filter element 3307 is placed at the liquid outlet 3304, the form in which the filter element 3307 is placed in the storage box 3301 and the cavity 3302 is divided into a first chamber 33021 and a second chamber 33022 has the following advantages: First, it allows the filter element 3307 to have a larger area, improving filtration efficiency and avoiding clogging due to the small area of ​​the filter element 3307. Second, it can collect impurities in the cleaning circuit only into the second chamber 33022, thereby avoiding the collection of impurities into the entire cavity 3302, which is more conducive to cleaning impurities from the cleaning agent storage component 33 and further improving the user experience.

[0132] It should be noted that although the present invention is described with reference to the above two embodiments, the cleaning agent storage component 33 is not limiting. The cleaning agent storage component 33 can be configured in any other possible form, etc. Such adjustments and changes to the specific configuration of the cleaning agent storage component 33 do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0133] The following example uses Embodiment 2 and combines it with... Figures 18 to 20 The cleaning agent storage component 33 of the present invention will be described.

[0134] It should be noted that, in practical applications, the present invention does not impose any limitations on the specific location and orientation of the filter component 3307 within the cleaning agent storage component 33, as long as it can collect the solids in the cleaning circuit into the second chamber 3302.

[0135] In one specific embodiment, such as Figure 18 As shown, the storage box 3301 has a liquid inlet 3303 and a liquid outlet 3304. The liquid inlet 3303 and the liquid outlet 3304 are located on both sides of the filter component 3307, respectively. The liquid inlet 3303 is connected to the second chamber 3302, and the liquid outlet 3304 is connected to the first chamber 3302.

[0136] When the cleaned dirt enters the second chamber 33022 through the inlet 3303 along with the cleaning liquid, the cleaning liquid can flow into the first chamber 33021 through the filter element 3307 and flow out through the outlet 3304. The dirt (impurities) are intercepted by the filter element 3307 and collected in the second chamber 33022.

[0137] In another embodiment, such as Figure 19 As shown, the storage box 3301 has an inlet pipe 3305 and an outlet 3304. The end of the inlet pipe 3305 forms an inlet 3303, which is located on the side of the filter member 3307 near the outlet 3304. The inlet pipe 3305 extends into the second chamber 33022, and the outlet 3304 communicates with the first chamber 33021.

[0138] When the cleaned dirt enters the second chamber 33022 along with the cleaning liquid through the inlet pipe 3305, the cleaning liquid can flow into the first chamber 33021 through the filter component 3307 and flow out from the outlet 3304. The dirt (impurities) are intercepted by the filter component 3307 and collected in the second chamber 33022.

[0139] In another specific embodiment, such as Figure 20As shown, the storage box 3301 has a liquid inlet 3303 and a liquid outlet 3306. The liquid inlet 3303 is connected to the second chamber 33022. The end of the liquid outlet 3306 forms a liquid outlet 3304. The liquid outlet 3304 is located on the side of the filter member 3307 near the liquid inlet 3303. The liquid outlet 3306 extends into the first chamber 33021.

[0140] When the dirt removed by the cleaning fluid enters the second chamber 33022 through the inlet 3303, the cleaning fluid can flow into the first chamber 33021 through the filter element 3307 and flow out through the outlet pipe 3306. The dirt (impurities) are intercepted by the filter element 3307 and collected in the second chamber 33022.

[0141] It should be noted that in practical applications, when the cleaning agent storage component 33 is in the first working state, the cleaning agent can be stored only in the first chamber 33021, or the cleaning agent can be stored in the second chamber 33022, or the cleaning agent can be stored in both the first chamber 33021 and the second chamber 33022. 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.

[0142] Preferably, the cleaning agent is stored in the first chamber 33021 and the second chamber 33022.

[0143] With this configuration, compared to storing the detergent storage component 33 only in the first chamber 33021 or the second chamber 33022, storing the detergent storage component 33 in the first chamber 33021 and the second chamber 33022 can make fuller use of the space within the detergent storage component 33, thereby making the detergent storage component 33 smaller and providing a better user experience.

[0144] Preferably, such as Figures 18 to 20 As shown, the storage box 3301 is provided with a drain outlet, which is connected to the second chamber 33022. The cleaning agent storage component 33 also includes a door 3308, which is located at the drain outlet and can open or close the drain outlet.

[0145] By setting up a drain outlet and a chamber door 3308, after cleaning the reverse osmosis membrane filter element 2, it is easy to open the chamber door 3308 and clean out the dirt collected in the second chamber 33022 through the drain outlet, avoiding the growth of bacteria and further improving the user experience.

[0146] It should be noted that the present invention does not limit the specific connection method of the first end of the main water inlet 1 to the water source. For example, the first end of the main water inlet 1 can be set to be directly connected to the tap water pipe, or the first end of the main water inlet 1 can be set to be connected to the pre-filter unit, or the first end of the main water inlet 1 can be set to be connected to the water storage tank, 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.

[0147] Preferably, such as Figures 1 to 12 As shown, the water purification device of the present invention also includes a pre-filter unit 4, the outlet end of the pre-filter unit 4 is connected to the first end of the main water inlet 1, and the cleaning inlet 301 is located at the downstream end of the pre-filter unit 4.

[0148] 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.

[0149] It should be noted that, in practical applications, those skilled in the art can set the pre-filter unit 4 as a pre-filter cartridge, or they can set the pre-filter unit 4 as a composite cartridge including a pre-filter cartridge and a post-filter cartridge, etc. Such adjustments and changes to the specific type of the pre-filter unit 4 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0150] Preferably, the pre-filter unit 4 is a pre-filter cartridge.

[0151] Preferably, such as Figures 1 to 12 As shown, the water purification device of the present invention also includes a pure water outlet pipe 5 and a pure water user component 51. The pure water end of the reverse osmosis membrane filter element 2 is connected to the pure water user component 51 through the pure water outlet pipe 5.

[0152] It should be noted that, in practical applications, those skilled in the art can directly configure the pure water component 51 as a water outlet component (such as a faucet or spout), with the filtered pure water flowing out from the faucet or spout for user use. Alternatively, the pure water component 51 can be configured as a post-filter, with the filtered pure water flowing into the post-filter to improve the taste for user use. Or, the pure water component 51 can be configured as a pure water tank, with the pure water filtered by the reverse osmosis membrane filter 2 flowing into the pure water tank for storage for user use, and so on. Such adjustments and changes to the specific configuration of the pure water component 51 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0153] Preferably, the pure water component 51 is a post-filter.

[0154] It should be noted that when cleaning the reverse osmosis membrane filter element 2, a small amount of cleaning agent will permeate through the membrane of the reverse osmosis membrane filter element 2 to the pure water end. Therefore, after cleaning, there will be a small amount of cleaning agent residue on the pure water end of the reverse osmosis membrane filter element 2. The residual cleaning agent needs to be discharged before it is used by the user.

[0155] The following two scenarios will be discussed in detail.

[0156] Scenario 1:

[0157] like Figure 2 , Figure 4 , Figure 6 , Figure 8 , Figure 10 and Figure 12 As shown, the water purification equipment also includes a return pipe 23 and a return valve 231. One end of the return pipe 23 is connected to the pure water outlet pipe 5, and the other end of the return pipe 23 is connected to the upstream end of the booster pump 12. The return valve 231 is installed on the return pipe 23 and is used to control the opening and closing of the return pipe 23.

[0158] With this setup, on the one hand, after cleaning the reverse osmosis membrane filter 2, the pure water containing detergent from the pure water end of the reverse osmosis membrane filter 2 can be discharged to the upstream end of the booster pump 12 for further filtration through the reverse osmosis membrane filter 2, thus removing any remaining small amount of detergent from the water purification equipment. This helps achieve zero additives and zero chemical pollution. On the other hand, when the water purification equipment is in normal water production mode and does not produce water for a long time, the reverse osmosis membrane filter 2 may experience an increase in the TDS value of the first cup of water. The "first cup of water" can also be returned to the upstream end of the booster pump 12 through the return pipe 23 to prevent users from drinking water with a high TDS value.

[0159] Scenario 2:

[0160] like Figure 1 , Figure 3 , Figure 5 , Figure 7 , Figure 9 and Figure 11 As shown, the water purification equipment also includes a drain pipe 22 and a drain valve 221. One end of the drain pipe 22 is connected to the pure water outlet pipe 5, and the other end is connected to the wastewater outlet pipe 21. The drain valve 221 is installed on the drain pipe 22 and is used to control the opening and closing of the drain pipe 22.

[0161] With this setup, after cleaning the reverse osmosis membrane filter element 2, first open the drain valve 221 to allow the water from the pure water end of the reverse osmosis membrane filter element 2 to flow into the wastewater outlet pipe 21 through the drain pipe 22. After the pure water containing the cleaning agent is completely discharged, close the drain valve 221 to allow the water from the pure water end of the reverse osmosis membrane filter element 2 to flow into the pure water water component 51 through the pure water outlet pipe 5. This allows residual cleaning agent to be discharged from the water purification equipment, helping to achieve zero additives and zero chemical pollution, and further improving the user experience.

[0162] It should also be noted that although the present invention is described in the above two cases, it is not restrictive. For example, the other end of the drain pipe 22 can be directly connected to the drain pipe or the wastewater outlet of the water purification equipment, and pure water containing detergent can be directly discharged to the drain pipe or the wastewater outlet of the water purification equipment.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] In one specific embodiment, the auxiliary cleaning component includes a heating module, wherein the heating module is used to heat the cleaning fluid.

[0167] 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.

[0168] It should be noted that the present invention does not limit the specific location of the heating module. For example, the heating module can be set on the cleaning pipe 31, or on the circulation pipe 61, or it can be set outside the cleaning agent storage component 33, 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.

[0169] 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.

[0170] 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.

[0171] Preferably, such as Figures 1 to 12 As shown, the water purification equipment of the present invention also includes a booster pump 12 and an inlet valve 11 installed on the main water inlet 1. The inlet valve 11 is used to control the opening and closing of the main water inlet 1.

[0172] It should be noted that the present invention does not limit the specific location of the booster pump 12 and the inlet valve 11. For example, the booster pump 12 can be located upstream of the inlet valve 11, or it can be located downstream of the inlet valve 11, etc. Such adjustments and changes to the specific location of the booster pump 12 and the inlet valve 11 do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0173] Preferably, the booster pump 12 is located upstream of the inlet valve 11.

[0174] 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.

[0175] For example, the water purification device is a water purifier.

[0176] 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 a main inlet water line, a reverse osmosis membrane filter element, and a pure water outlet pipe. The first end of the main inlet water line is connected to a water source, the second end of the main inlet water line is connected to the inlet end of the reverse osmosis membrane filter element, and the pure water outlet pipe is connected to the pure water end of the reverse osmosis membrane filter element. The water purification equipment also includes a cleaning component, which has a cleaning outlet and is capable of delivering cleaning solution to the reverse osmosis membrane filter element to clean it. The water purification equipment is configured such that when the cleaning component cleans the reverse osmosis membrane filter element, the cleaning outlet is not connected to the main water inlet or the pure water outlet pipe, so as to prevent the cleaning liquid from flowing through the main water inlet and the pure water outlet pipe.

2. The water purification equipment according to claim 1, characterized in that, The reverse osmosis membrane filter element includes a housing and a reverse osmosis membrane assembly disposed within the housing. The housing is provided with a first water inlet, a second water inlet, and a pure water outlet. The second end of the main water inlet is connected to the first water inlet. The pure water outlet pipe is connected to the pure water outlet. The cleaning outlet is connected to the second water inlet. A backflow preventer is provided at the first water inlet to prevent the cleaning liquid in the reverse osmosis membrane filter element from flowing back into the main water inlet. Alternatively, the water purification device includes a first reversing valve, the first port of the first reversing valve being connected to the second end of the main water inlet, the second port of the first reversing valve being connected to the clean outlet, and the third port of the first reversing valve being connected to the water inlet of the reverse osmosis membrane filter element, wherein the third port of the first reversing valve can selectively connect to the first port or the second port. Alternatively, the water purification device may further include a connecting component, the connecting component having a cavity and a first port, a second port and a third port communicating with the cavity, the second end of the main water inlet communicating with the first port, the cleaning outlet communicating with the second port, and the third port communicating with the water inlet end of the reverse osmosis membrane filter element, the connecting component being configured to prevent liquid in the cavity from flowing back into the main water inlet through the first port.

3. The water purification equipment according to claim 2, characterized in that, The connecting member is configured such that when it is in the first working state, it allows liquid in the main water inlet to enter the cavity through the first port and prevents liquid in the cavity from flowing back into the cleaning component through the second port. The connecting member is configured to allow liquid in the cleaning assembly to enter the cavity through the second port when it is in the second working state, and to prevent liquid in the cavity from flowing back into the main water inlet through the first port.

4. The water purification equipment according to claim 3, characterized in that, The connecting component further includes a check valve element, a first blocking structure, and a second blocking structure. The check valve element is pivotally connected to the inner wall of the cavity. The first blocking structure is disposed near the first pipe opening, and the second blocking structure is disposed near the second pipe opening. When the anti-reverse element abuts against the first blocking structure, the connecting member allows liquid from the cleaning assembly to enter the cavity and prevents liquid from flowing back into the main water inlet through the first port. When the anti-reverse element abuts against the second blocking structure, the connecting member allows liquid in the main water inlet to enter the cavity and prevents liquid in the cavity from flowing back into the cleaning assembly through the second port.

5. The water purification equipment according to any one of claims 1 to 4, characterized in that, The cleaning component has a cleaning agent storage component and a cleaning inlet. The cleaning agent storage component is used to store cleaning agent, and the cleaning inlet is connected to the main water inlet so that water in the main water inlet enters the cleaning agent storage component through the cleaning inlet, thereby dissolving the cleaning agent to form the cleaning liquid.

6. The water purification equipment according to claim 5, 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 to form 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.

7. The water purification equipment according to claim 6, characterized in that, The water purification equipment also includes a circulation pipe and a circulation pump. The first end of the circulation pipe is connected to the wastewater end of the reverse osmosis membrane filter element, and the second end of the circulation pipe is connected to the upstream end of the detergent storage component. The detergent storage component, the reverse osmosis membrane filter element, and the circulation pipe are connected in sequence to form a cleaning circuit. The circulation pump is installed on the cleaning circuit and is used to drive the liquid circulation flow in the cleaning circuit.

8. The water purification equipment according to claim 7, 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. And / or, the circulation pump is installed on the cleaning line or the manifold.

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; And / or, the water purification equipment further includes a pre-filter unit, the outlet of which is connected to the first end of the main water inlet, and the cleaning inlet of the cleaning component is located at the downstream end of the pre-filter unit.

10. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes a return pipe and a return valve. One end of the return pipe is connected to the pure water end of the reverse osmosis membrane filter element, and the other end of the return pipe is connected to the main water inlet. The return valve is installed on the return pipe and is used to control the opening and closing of the return pipe. Alternatively, the water purification equipment may further include a drain pipe and a drain valve, one end of the drain pipe being connected to the pure water outlet pipe and the other end of the drain pipe being connected to the wastewater outlet pipe of the water purification equipment, and the drain valve being installed on the drain pipe and used to control the opening and closing of the drain pipe.

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