Water purification equipment

Abstract

The utility model relates to the technical field of water purification, particularly provides water purification equipment, and aims to solve the problem that the use experience of a user is poor due to low cleaning efficiency, poor cleaning effect and residual cleaning agent after cleaning when an existing water purifier is cleaned by using a cleaning assembly. The water purification equipment comprises a reverse osmosis membrane filter element, a cleaning assembly, a circulating pipe and a pure water component, the cleaning assembly is communicated with the water inlet end of the reverse osmosis membrane filter element, and the cleaning assembly, the water inlet end of the reverse osmosis membrane filter element and a wastewater end can be sequentially communicated through the circulating pipe to form a cleaning loop; the water purification equipment is arranged to be capable of driving the cleaning liquid to circularly flow in the cleaning loop, and the pure water end of the reverse osmosis membrane filter element can be selectively communicated with the pure water component or the water inlet end of the reverse osmosis membrane filter element. After the reverse osmosis membrane filter element is cleaned, the water containing the cleaning agent at the pure water end of the reverse osmosis membrane filter element can be discharged to the water inlet main path, so that zero pollution and zero chemical addition are realized, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification technical field, specifically provide a water purification equipment. BACKGROUND

[0002] With the improvement of people's living standards, people's demand for drinking water is also getting higher and higher. Water purification equipment such as water purifier, net drinking integrated machine gradually becomes the necessary drinking water facilities in people's daily life.

[0003] After a long time of use of the water purification equipment, dirt in the water will adhere to the reverse osmosis membrane filter element, affecting the water production rate of the water purification equipment, thereby affecting the service life of the reverse osmosis membrane filter element. After a period of use of the water purification equipment, cleaning the reverse osmosis membrane filter element with a cleaning agent can remove the dirt adhering to the surface of the reverse osmosis membrane filter element, prolonging the service life of the reverse osmosis membrane filter element.

[0004] In the prior art, when cleaning the reverse osmosis membrane filter element with the cleaning assembly, the cleaning agent is usually directly delivered into the reverse osmosis membrane filter element for soaking, and the dirt in the reverse osmosis membrane filter element is cleaned down. However, this cleaning method not only has the problems of long soaking time and low cleaning efficiency, but also cannot completely clean the dirt on the reverse osmosis membrane filter element, resulting in poor cleaning effect. In addition, after cleaning, there will be a small amount of cleaning agent remaining in the pure water end of the reverse osmosis membrane filter element. Although the cleaning agent used at present is harmless to the human body, with people's increasing demand for drinking water, the small amount of cleaning agent remaining after cleaning will still affect the user's experience. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to at least solve the above technical problems to some extent, that is, at least to some extent, solve the problem that the existing water purification equipment has low cleaning efficiency, poor cleaning effect and a small amount of cleaning agent remaining after cleaning, resulting in poor user experience.

[0006] In a first aspect, the utility model provides a kind of water purification equipment, which comprises: reverse osmosis membrane filter element;Cleaning assembly has cleaning agent storage component, the cleaning agent storage component is used to store cleaning agent, the cleaning assembly can be communicated with the water inlet end of the reverse osmosis membrane filter element, to send cleaning fluid to the reverse osmosis membrane filter element;Circulation pipe, the first end of the circulation pipe is communicated with the wastewater end of the reverse osmosis membrane filter element, the second end of the circulation pipe is communicated with the cleaning assembly, so that the cleaning assembly, the water inlet end and wastewater end of the reverse osmosis membrane filter element are sequentially communicated to form cleaning circuit;And pure water water component is used to output the water of the pure water end of the reverse osmosis membrane filter element for user drinking;Wherein, the water purification equipment is arranged to be able to drive the cleaning fluid to circulate in the cleaning circuit, and the pure water end of the reverse osmosis membrane filter element can be selectively communicated with the pure water water component or the water inlet end of the reverse osmosis membrane filter element.

[0007] In the preferred technical solutions of the above water purification equipment, the cleaning assembly has a cleaning outlet, and the water purification equipment further comprises a water inlet main line, a circulating pump and a booster pump arranged on the water inlet main line, the water inlet main line is communicated with the water inlet end of the reverse osmosis membrane filter element, the cleaning outlet is communicated with the water inlet main line and located at the downstream end of the booster pump, the circulating pump is arranged on the cleaning circuit and used to drive the cleaning fluid to circulate in the cleaning circuit, and the pure water end of the reverse osmosis membrane filter element can be selectively communicated with the pure water water component or the water inlet main line.

[0008] In the preferred technical solutions of the above water purification equipment, the water purification equipment further comprises a pure water outlet pipe, a backflow pipe and a backflow valve, the first end of the backflow pipe is communicated with the pure water outlet pipe, the second end of the backflow pipe is communicated with the water inlet main line, and the backflow valve is arranged on the backflow pipe and used to control the opening and closing of the backflow pipe;Or, the water purification equipment further comprises a pure water outlet pipe, a backflow pipe and a first reversing valve, the first interface of the first reversing valve is communicated with the pure water end of the reverse osmosis membrane filter element, the second interface of the first reversing valve is communicated with the pure water outlet pipe, the third interface of the first reversing valve is communicated with the first end of the backflow pipe, the second end of the backflow pipe is communicated with the water inlet main line, and the first interface of the first reversing valve can be selectively communicated with the second interface or the third interface.

[0009] In the preferred technical scheme of the water purifying device, the cleaning assembly further comprises a cleaning pipeline, two ends of the cleaning pipeline form a cleaning inlet and a cleaning outlet respectively, the cleaning inlet is communicated with the water inlet main pipeline, so that the water in the water inlet main pipeline enters the cleaning agent storage member to form a cleaning liquid, the cleaning outlet is communicated with the water inlet main pipeline, so that the cleaning liquid in the cleaning agent storage member enters the reverse osmosis membrane filter core through the water inlet main pipeline, and the second end of the circulating pipeline is communicated with the cleaning pipeline.

[0010] In the preferred technical scheme of the water purifying device, the cleaning assembly comprises a cleaning pipeline, a cleaning valve and a cleaning agent storage member arranged on the cleaning pipeline, two ends of the cleaning pipeline form the cleaning inlet and the cleaning outlet respectively, the cleaning agent storage member is located at the downstream end of the cleaning valve and is used for storing an acidic cleaning agent or an alkaline cleaning agent, and the circulating pump is arranged on the cleaning pipeline; or the cleaning assembly comprises a collecting pipeline, at least two cleaning pipelines arranged in parallel, a cleaning valve and a cleaning agent storage member arranged on each cleaning pipeline, first ends of the cleaning pipelines are connected and communicated with the cleaning inlet, second ends of the cleaning pipelines are connected and communicated with the collecting pipeline, an end of the collecting pipeline forms the cleaning outlet, the cleaning agent storage member is located at the downstream end of the cleaning valve, the cleaning agent storage member on each cleaning pipeline is used for storing a different type of cleaning agent, and the circulating pump is arranged on the collecting pipeline.

[0011] In the preferred technical scheme of the water purifying device, the water purifying device further comprises a protection member arranged between the circulating pump and the cleaning outlet, the protection member is arranged to prevent the water in the water inlet main pipeline from flowing back to the cleaning agent storage member through the cleaning outlet, and the protection member is further arranged to resist the water pressure in the water inlet main pipeline when the water purifying device is in a water production mode.

[0012] In the preferred technical scheme of the water purifying device, the protection member comprises at least one of a check valve, a pressure reducing valve or a control valve.

[0013] In the preferred technical scheme of the water purifying device, the water purifying device further comprises a wastewater outlet pipeline and a wastewater valve arranged on the wastewater outlet pipeline, the wastewater outlet pipeline is communicated with a wastewater end of the reverse osmosis membrane filter core, the first end of the circulating pipeline is communicated with the wastewater outlet pipeline and located at the upstream end of the wastewater valve, and / or the wastewater end of the reverse osmosis membrane filter core is selectively communicated with the wastewater outlet pipeline or the first end of the circulating pipeline.

[0014] In the preferred technical scheme of the water purification equipment, the water purification equipment further comprises a first water quality detection component for detecting water quality information of the pure water end of the reverse osmosis membrane filter core; and / or the water purification equipment further comprises a second water quality detection component for detecting water quality information in the cleaning circuit; and / or the water purification equipment further comprises a third water quality detection component arranged on the wastewater outlet pipe and used for detecting water quality information in the wastewater outlet pipe.

[0015] In the preferred technical scheme of the water purification equipment, the cleaning agent storage component has a cavity, and is arranged to store cleaning agent in the cavity when the cleaning agent storage component is in the first working state and to collect impurities in the cleaning circuit into the cavity when the cleaning agent storage component is in the second working state.

[0016] In the case of using the preferred technical scheme, the circulation pipe is arranged to sequentially connect the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core and the wastewater end of the reverse osmosis membrane filter core to form a cleaning circuit, so that the cleaning liquid circulates in the cleaning circuit when the cleaning assembly cleans the reverse osmosis membrane filter core, and the reverse osmosis membrane filter core is flushed multiple times, thereby effectively improving the cleaning effect on the reverse osmosis membrane filter core. Meanwhile, when the water purification equipment is in a normal water production mode, water at the pure water end of the reverse osmosis membrane filter core is delivered to the pure water water component for the user to drink. After the cleaning assembly completes cleaning of the reverse osmosis membrane filter core, the water purification equipment can also deliver the pure water containing cleaning agent that permeates to the pure water end of the reverse osmosis membrane filter core to the water inlet end of the reverse osmosis membrane filter core, and then the residual small amount of cleaning agent is completely discharged after multiple filtrations by the reverse osmosis membrane filter core, which helps to realize zero addition and zero chemical pollution, and greatly improves the user experience.

[0017] Further, compared with the form of driving the liquid in the cleaning circuit to circulate by the booster pump, the form of driving the liquid in the cleaning circuit to circulate by the circulation pump can avoid the cleaning liquid entering the booster pump to damage the diaphragm of the booster pump, thereby avoiding affecting the service life of the booster pump. In addition, the cleaning outlet is arranged at the downstream end of the booster pump, which can avoid the cleaning liquid flowing through the booster pump, thereby avoiding the cleaning liquid damaging the diaphragm in the booster pump. Since the cost of the circulation pump is much lower than that of the booster pump, the cost of the water purification equipment can be greatly saved, and the user experience is further improved.

[0018] Further, by enabling the pure water end of the reverse osmosis membrane filter core to selectively communicate with the pure water outlet member or the water inlet main line, on the one hand, after the reverse osmosis membrane filter core is cleaned, the water containing a small amount of cleaning agent residue permeated to the pure water end of the reverse osmosis membrane filter core can be transported to the water inlet main line through the backflow pipe, and then enter the water inlet end of the reverse osmosis membrane filter core through the water inlet main line, thereby helping to discharge the pure water containing a small amount of cleaning agent, on the other hand, when the reverse osmosis membrane filter core is in the normal water production mode, the water with a high TDS value at the pure water end of the reverse osmosis membrane filter core can also be transported to the water inlet main line and then to the water inlet end of the reverse osmosis membrane filter core, solving the problem of "high TDS value of the first cup of water".

[0019] Further, compared with the form in which the cleaning assembly is provided with only a cleaning outlet, the form in which the cleaning assembly is provided with a cleaning inlet and a cleaning outlet can enable the cleaning assembly to form cleaning liquid by injecting water into the cleaning inlet during cleaning, avoiding the storage of a large amount of cleaning liquid in the cleaning agent storage member, thereby further improving the user's experience.

[0020] Further, by providing the cleaning assembly to include a plurality of parallelly arranged cleaning pipelines and a cleaning valve and a cleaning agent storage member arranged on each cleaning pipeline, a plurality of types of cleaning agents can be stored, facilitating the use of different types of cleaning agents for cleaning according to the dirt type of the reverse osmosis membrane filter core, and further improving the cleaning effect of the reverse osmosis membrane filter core.

[0021] Further, by arranging the circulating pump on the cleaning pipeline or the backflow pipe and arranging the protection member between the circulating pump and the cleaning outlet, on the one hand, the water in the water inlet main line can be prevented from flowing backward to the cleaning agent storage member through the cleaning outlet, and the cleaning agent can be prevented from dissolving too early, on the other hand, when the water purification equipment is in the water production mode, the protection member can also resist the water pressure in the water inlet main line, thereby preventing the circulating pump from leaking due to excessive water pressure.

[0022] Further, by arranging the first water quality detection member, the water quality information of the pure water end of the reverse osmosis membrane filter core can be accurately detected, and then the pure water end of the reverse osmosis membrane filter core can be selectively communicated with the pure water outlet member or the water inlet end of the reverse osmosis membrane filter core according to the water quality information of the pure water end of the reverse osmosis membrane filter core, not only helping to completely discharge the water containing cleaning agent residue, but also helping to save water sources, thereby further improving the user's experience.

[0023] Further, by arranging the second water quality detection component, the water quality information of the cleaning liquid in the cleaning circuit can be detected, and when the water quality in the cleaning circuit no longer changes, it indicates that the dirt on the reverse osmosis membrane filter element no longer enters the cleaning liquid, that is, the reverse osmosis membrane filter element is cleaned, so that the cleaning of the reverse osmosis membrane filter element can be accurately ended according to the water quality information in the cleaning circuit. On the one hand, it can avoid that the cleaning time is too short to completely remove the dirt on the reverse osmosis membrane filter element, and on the other hand, it can also avoid the problem of energy waste caused by too long cleaning time.

[0024] Further, by arranging the third water quality detection component, when the waste water generated by flushing the reverse osmosis membrane filter element enters the waste water outlet pipe, the water quality information in the waste water outlet pipe can be detected, so that whether the residual small amount of cleaning agent in the reverse osmosis membrane filter element has been flushed clean can be judged according to the detection data of the third water quality detection component, and water source can be saved.

[0025] Further, by arranging the cleaning agent storage component to store the cleaning agent in the cavity when it is in the first working state and to collect the impurities in the cleaning circuit into the cavity when it is in the second working state, when the reverse osmosis membrane filter element does not need to be cleaned, the cleaning agent can be stored in the cavity, when the cleaning assembly cleans the reverse osmosis membrane filter element, the water in the water inlet main circuit enters the cavity to dissolve the cleaning agent to form a cleaning liquid, and the cleaning agent circulates in the cleaning circuit under the action of the circulating pump, so that the dirt on the surface of the reverse osmosis membrane filter element is washed off, and when the dirt flows in the cleaning circuit with the cleaning liquid and flows into the cavity, the washed impurities are collected into the cavity, avoiding that the washed impurities cause secondary pollution to the reverse osmosis membrane filter element, and further improving the cleaning effect of the cleaning assembly on the reverse osmosis membrane filter element. BRIEF DESCRIPTION OF DRAWINGS

[0026] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0027] Figure 1 is a structural schematic view of an embodiment one of the water purification equipment of the present application;

[0028] Figure 2 is a structural schematic view of an embodiment two of the water purification equipment of the present application;

[0029] Figure 3 is a structural schematic view of an embodiment three of the water purification equipment of the present application;

[0030] Figure 4 is a structural schematic view of an embodiment four of the water purification equipment of the present application;

[0031] Figure 5is a structural schematic view of the embodiment five of the water purification equipment of the utility model;

[0032] Figure 6 is a structural schematic view of the embodiment six of the water purification equipment of the utility model;

[0033] Figure 7 is a structural schematic view of the cleaning agent storage component of one of the embodiments of the utility model;

[0034] Figure 8 is a structural schematic view of the cleaning agent storage component of another embodiment of the utility model;

[0035] Figure 9 is a structural schematic view of the cleaning agent storage component of still another embodiment of the utility model.

[0036] List of reference signs:

[0037] 1, water inlet main path; 11, water inlet valve; 12, booster pump; 2, reverse osmosis membrane filter core; 21, waste water outlet pipe; 211, waste water valve; 212, third water quality detection component; 22, backflow pipe; 221, backflow valve; 23, first reversing 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, cavity; 33021, first chamber; 33022, second chamber; 3303, liquid inlet; 3304, liquid outlet; 3305, liquid inlet pipe; 3306, liquid outlet pipe; 3307, filter screen; 3308, blowdown valve; 331, first cleaning agent storage component; 332, second cleaning agent storage component; 341, first one-way valve; 342, second one-way valve; 35, confluence pipe; 36, shunt pipe; 361, control valve; 4, pre-filter unit; 5, pure water outlet pipe; 51, pure water water component; 52, first water quality detection component; 61, circulation pipe; 62, circulation pump; 63, second water quality detection component; 7, second reversing valve. DETAILED DESCRIPTION

[0038] The preferred embodiments of the utility model are described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the utility model, and are not intended to limit the protection scope of the utility model.

[0039] It should be noted that in the description of the utility model, the terms "upper", "lower", "inner", "outer" and the like indicate the direction or positional relationship of the terms based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In addition, it should be noted that in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] Based on the problems that the existing water purification equipment mentioned in the background art has low cleaning efficiency, poor cleaning effect and a small amount of cleaning agent residue after cleaning, resulting in poor user experience, the utility model provides a water purification equipment.

[0042] As Figures 1 to 6 shown, the water purification equipment of the utility model includes a reverse osmosis membrane filter core 2, a cleaning assembly, a circulating pipe 61 and a pure water water member 51.

[0043] The cleaning assembly has a cleaning agent storage member 33 for storing cleaning agent, and the cleaning assembly can be in communication with the water inlet end of the reverse osmosis membrane filter core 2 to deliver cleaning liquid to the reverse osmosis membrane filter core 2. The first end of the circulating pipe 61 is in communication with the wastewater end of the reverse osmosis membrane filter core 2, and the second end of the circulating pipe 61 is in communication with the cleaning assembly, so that the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core 2 and the wastewater end of the reverse osmosis membrane filter core 2 are in communication in sequence to form a cleaning loop (as shown by the arrow in Figure 1 The water purification equipment is arranged to drive the cleaning liquid to circulate in the cleaning loop, and the pure water water member 51 is used to output the water at the pure water end of the reverse osmosis membrane filter core for the user to drink.

[0044] Among them, the pure water end of the reverse osmosis membrane filter core 2 can be selectively in communication with the pure water water member 51 or the water inlet end of the reverse osmosis membrane filter core 2.

[0045] 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, flushing the reverse osmosis membrane filter element 2 multiple times, 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 cleaning agent that has permeated to the pure water end of the reverse osmosis membrane filter element 2 to the inlet end of the reverse osmosis membrane filter element 2, thereby facilitating the discharge of water with cleaning agent residue from the pure water end of the reverse osmosis membrane filter element 2 and improving the user experience.

[0046] It should be noted that, in practical applications, this utility model 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 in the cleaning circuit through the booster pump 12 on the main water inlet 1 (not shown in the figure), etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0047] 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 water 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 water inlet 1, with the cleaning component delivering the cleaning agent to the reverse osmosis membrane filter element 2 through the main water inlet 1, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of this utility model and should all be included within the protection scope of this utility model.

[0048] Preferably, such as Figures 1 to 6 As shown, the cleaning component of this utility model 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 installed 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 downstream of the booster pump 12. The circulation pump 62 is installed on the cleaning circuit and is used to drive the liquid circulation flow in the cleaning circuit. The pure water end in the reverse osmosis membrane filter element 2 can be selectively connected to the pure water use component 51 or the main water inlet 1.

[0049] Through such an arrangement, compared with the form of driving the liquid in the cleaning circuit to circulate by the booster pump 12, the form of driving the liquid in the cleaning circuit to circulate by the circulation pump 62 can avoid the cleaning liquid from entering the booster pump 12 to damage the diaphragm of the booster pump 12, thereby avoiding affecting the service life of the booster pump 12, and at the same time, arranging the cleaning outlet 302 at the downstream end of the booster pump 12 can avoid the cleaning liquid from flowing through the booster pump to damage the diaphragm of the booster pump 12, and further, since the cost of the circulation pump 62 is much lower than that of the booster pump 12, the cost of the water purification device can be greatly saved, and the user experience is further improved.

[0050] It should be noted that the water inlet end in the reverse osmosis membrane filter core 2 is not limited to be selectively communicated with the pure water water member 51 or the water inlet main line 1, for example, a backwater outlet can be additionally arranged on the reverse osmosis membrane filter core 2, and the pure water end of the reverse osmosis membrane filter core 2 is selectively communicated with the pure water water member 51 or the backwater outlet (not shown in the figure), and the like, and such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, preferably, the pure water end in the reverse osmosis membrane filter core 2 is selectively communicated with the pure water water member 51 or the water inlet main line 1.

[0051] It should be further noted that in actual application, the specific arrangement type of the pure water water member 51 is not limited by those skilled in the art, as long as the water output of the pure water end of the reverse osmosis membrane filter core 2 can be used for the user to drink, for example, the pure water water member 51 can be arranged as a pure water tank, and the pure water filtered by the reverse osmosis membrane filter core 2 is directly delivered to the pure water tank for the user to drink, or the pure water water member 51 can be arranged as a post-filter, and the pure water filtered by the reverse osmosis membrane filter core 2 is delivered to the post-filter to improve the taste before being drunk by the user, or the pure water water member 51 can be arranged as a water outlet member (water outlet nozzle or faucet), and the pure water filtered by the reverse osmosis membrane filter core 2 is directly delivered from the water outlet member (water outlet nozzle or faucet), and the like, and such adjustment and change of the specific arrangement type of the pure water water member 51 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0052] Preferably, as shown in Figures 1 to 6 the pure water water member 51 includes a post-filter, and the pure water filtered by the reverse osmosis membrane filter core 2 is delivered to the post-filter to improve the taste before being drunk by the user.

[0053] It should be noted that in actual application, the specific setting type of the cleaning assembly is not limited, for example, the cleaning assembly can be set to have only the cleaning outlet 302, that is, a large amount of cleaning liquid is directly stored in the cleaning agent storage member 33, when the reverse osmosis membrane filter core 2 needs to be cleaned, the cleaning liquid stored in the cleaning agent storage member 33 flows out from the cleaning outlet 302 and is transported into the reverse osmosis membrane filter core 2, or the cleaning assembly can also be set to include the cleaning pipeline 31 and the cleaning agent storage member 33 arranged on the cleaning pipeline 31, the two ends of the cleaning pipeline 31 form the cleaning inlet 301 and the cleaning outlet 302 respectively, water is injected into the cleaning inlet 301 so as to form the cleaning liquid in the cleaning agent storage member 33, and the like, the adjustment and change of the specific setting type of the cleaning assembly do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0054] Preferably, as shown in Figures 1 to 6 , the cleaning assembly further has the cleaning pipeline 31, the two ends of the cleaning pipeline 31 form the cleaning inlet 301 and the cleaning outlet 302 respectively, the cleaning inlet 301 is in communication with the water inlet main pipeline 1, so that the water in the water inlet main pipeline 1 enters the cleaning agent storage member 33 through the cleaning inlet 301 to form the cleaning liquid, the cleaning outlet 302 is in communication with the water inlet main pipeline 1, so that the cleaning liquid is transported into the reverse osmosis membrane filter core 2 through the cleaning outlet 302, the second end of the circulating pipeline 61 is in communication with the cleaning pipeline 31, and the circulating pump 62 is arranged on the cleaning pipeline 31.

[0055] Through such a setting, compared with the form that the cleaning assembly is set to have only the cleaning outlet 302, the form that the cleaning assembly is set to have the cleaning inlet 301 and the cleaning outlet 302 can make the cleaning assembly form the cleaning liquid by injecting water into the cleaning inlet 301 during cleaning, avoid storing a large amount of cleaning liquid in the cleaning agent storage member 33 to cause the cleaning assembly to be too large in size, and further improve the use experience of the user.

[0056] It should be noted that in actual application, the specific structure form of the cleaning assembly is not limited, as long as the cleaning pipeline 31 and the cleaning agent storage member 33 are provided, and the two ends of the cleaning pipeline form the cleaning inlet 301 and the cleaning outlet 302.

[0057] The cleaning assembly of the present application will be introduced below with the following two embodiments.

[0058] Embodiment 1:

[0059] As shown in Figure 1 , Figure 3 and Figure 5As shown, the cleaning assembly comprises a cleaning pipeline 31, and a cleaning valve 32 and a cleaning agent storage member 33 arranged in sequence on the cleaning pipeline 31, the cleaning agent storage member 33 is located at the downstream end of the cleaning valve 32 and is used to store acidic cleaning agent or alkaline cleaning agent, and a circulating pump 62 is arranged on the cleaning pipeline 31.

[0060] When the cleaning assembly cleans the reverse osmosis membrane filter core 2, the cleaning valve 32 is opened, the water in the water inlet main pipeline 1 enters the cleaning agent storage member 33 through the cleaning inlet 301, and the cleaning agent stored in the cleaning agent storage member 33 is dissolved to form a cleaning liquid, the cleaning liquid is then discharged through the cleaning outlet 302 and transported into the reverse osmosis membrane filter core 2, and then the reverse osmosis membrane filter core 2 is soaked with the cleaning liquid, after that, the cleaning valve 32 is closed, and the circulating pump 62 is started, the cleaning liquid in the reverse osmosis membrane filter core 2 flows in the cleaning loop, and the reverse osmosis membrane filter core 2 is flushed multiple times to remove dirt on the reverse osmosis membrane filter core 2.

[0061] It should be noted that in actual application, the person skilled in the art can store cleaning agent in the cleaning agent storage member 33 according to actual application requirements, for example, acidic cleaning agent can be stored in the cleaning agent storage member 33, or alkaline cleaning agent can also be stored in the cleaning agent storage member 33, etc., such adjustment and change of the type of cleaning agent in the cleaning agent storage member 33 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0062] It should be further noted that in actual application, the person skilled in the art can set the second end of the circulating pipeline 61 to communicate with the upstream end of the cleaning valve 32, or can set the second end of the circulating pipeline 61 to communicate with the downstream end of the cleaning valve 32, etc., such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0063] Preferably, the second end of the circulating pipeline 61 is set to communicate with the downstream end of the cleaning valve 32.

[0064] Through such setting, when the circulating pump 62 is started, the cleaning valve 32 can be closed to avoid the cleaning liquid in the cleaning loop from flowing back to the water inlet main pipeline 1 to pollute the water inlet main pipeline 1.

[0065] Embodiment 2:

[0066] As Figure 2 , Figure 4 and Figure 6As shown, the cleaning assembly comprises a converging pipe 35, at least two cleaning pipes 31 arranged in parallel, a cleaning valve 32 and a cleaning agent storage member 33 arranged on each cleaning pipe 31, the first ends of the plurality of cleaning pipes 31 converge and form a cleaning inlet 301, the second ends of the plurality of cleaning pipes 31 converge and communicate with the converging pipe 35, the end of the converging pipe 35 forms a cleaning outlet 302, the cleaning agent storage member 33 is located at the downstream end of the cleaning valve 32, the cleaning agent storage member 33 on each cleaning pipe 31 is used to store different types of cleaning agents, and a circulating pump 62 is arranged on the converging pipe 35.

[0067] It should be noted that in actual application, the circulating pump 62 is not limited to being arranged on the cleaning pipe 31 or the converging pipe 35, for example, the circulating pump 62 can also be arranged on the circulating pipe 61, or the circulating pump 62 can also be arranged on the water inlet main line 1 between the cleaning outlet 302 and the reverse osmosis membrane filter element 2, or the circulating pump 62 can also be arranged at any other possible position on the cleaning circuit, and the like. Adjustment and change of the specific arrangement position of the circulating pump 62 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, preferably, the circulating pump 62 is arranged on the cleaning pipe 31 or the converging pipe 35.

[0068] It should be noted that in actual application, the present application does not make any limitation on the specific number of the cleaning pipes 31 arranged in parallel, for example, two cleaning pipes 31 arranged in parallel can be arranged, the cleaning valve 32 and the cleaning agent storage member 33 are arranged on the two cleaning pipes 31 respectively, or three cleaning pipes 31 arranged in parallel can be arranged, the cleaning valve 32 and the cleaning agent storage member 33 are arranged on the three cleaning pipes 31 respectively, or a plurality of cleaning pipes 31 arranged in parallel can be arranged, the cleaning valve 32 and the cleaning agent storage member 33 are arranged on the plurality of cleaning pipes 31 respectively, and the like. Adjustment and change of the specific arrangement number of the cleaning pipes 31 arranged in parallel do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0069] Hereinafter, taking the arrangement of two cleaning pipes 31 arranged in parallel as an example for introduction.

[0070] Specifically, as shown in FIG. 1, Figure 2 , Figure 4 and Figure 6As shown, the cleaning assembly comprises a converging pipe 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 member 331, the second cleaning pipe 312 is provided with a second cleaning valve 322 and a second cleaning agent storage member 332, the first end of the first cleaning pipe 311 and the first end of the second cleaning pipe 312 converge and form a cleaning inlet 301, the second end of the first cleaning pipe 311 and the second end of the second cleaning pipe 312 converge and communicate with the converging pipe 35, the end of the converging pipe 35 forms a cleaning outlet 302, the first cleaning agent storage member 331 is located at the downstream end of the first cleaning valve 321 and is used to store an acidic cleaning agent, the second cleaning agent storage member 332 is located at the downstream end of the second cleaning valve 322 and is used to store an alkaline cleaning agent, and a circulating pump 62 is arranged on the converging pipe 35.

[0071] It should be noted that in actual application, the second end of the circulating pipe 61 can be arranged to communicate with the upstream end of the first cleaning agent storage member 331 and the second cleaning agent storage member 332, or the second end of the circulating pipe 61 can be arranged to communicate with the downstream end of the first cleaning agent storage member 331 and the second cleaning agent storage member 332, and the like, and such adjustment and change of the specific connection position of the second end of the circulating pipe 61 with the first cleaning pipe 311 and the second cleaning pipe 312 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0072] Preferably, as shown in Figure 2 , as shown in Figure 4 and Figure 6 , the cleaning assembly further comprises a shunt pipe 36 and a control valve 361, the first end of the shunt pipe 36 forms the cleaning inlet 301, the first end of the first cleaning pipe 311 and the second end of the second cleaning pipe 312 converge and communicate with the second end of the shunt pipe 36, the second end of the circulating pipe 61 communicates with the second end of the shunt pipe 36, and the control valve 361 is arranged on the shunt pipe 36 and is used to control the on-off of the shunt pipe 36.

[0073] Through such arrangement, the second end of the circulating pipe 61 can communicate with the upstream end of the first cleaning agent storage member 331 and the second cleaning agent storage member 332, so that the cleaning agent in the first cleaning agent storage member 331 or the second cleaning agent storage member 332 is completely delivered into the reverse osmosis membrane filter element 2, thereby improving the cleaning effect of the reverse osmosis membrane filter element 2, and at the same time, the control valve 361 arranged on the shunt pipe 36 can also prevent the cleaning liquid in the cleaning circuit from flowing back to the water inlet main circuit 1 and polluting the water inlet main circuit 1.

[0074] 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 utility model and should be included within the protection scope of this utility model.

[0075] 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.

[0076] like Figure 2 , Figure 4 and Figure 6 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 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.

[0077] It should be noted that this utility model does not limit the specific type of acidic cleaning agent. For example, the acidic cleaning agent can be at least one of malic acid, citric acid, hydrochloric acid, and phosphoric acid. Of course, the acidic cleaning agent can also be other types of acidic substances, and those skilled in the art can make adjustments according to actual needs.

[0078] 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.

[0079] It needs to be further explained that the specific type of the alkaline cleaning agent is not limited in the utility model, for example, the alkaline cleaning agent can be set as at least one of dishwashing powder, soda, baking soda, sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, sodium citrate, ethylenediaminetetraacetic acid tetrasodium, sodium dodecyl sulfate, sodium disulfite and sodium bisulfite, of course, the alkaline cleaning agent can also be other types of alkaline substances, and the person skilled in the art can adjust according to actual needs.

[0080] It needs to be further explained that the form of the cleaning agent in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 is not limited in the utility model, for example, the cleaning agent in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 can all be set as solid, or the cleaning agent in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 can all be set as liquid cleaning agent, or one of the first cleaning agent storage member 331 and the second cleaning agent storage member 332 can be set as solid cleaning agent, and the other can be set as liquid cleaning agent, and the like, the adjustment and change of the specific form of the cleaning agent stored in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0081] Preferably, the cleaning agent stored in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 is solid.

[0082] Further preferably, in order to accelerate the dissolution of the cleaning agent, the cleaning agent is granular or powdery.

[0083] It needs to be explained that although the specific form of the cleaning assembly is introduced by taking the above two embodiments as examples in the utility model, this is not restrictive, for example, the cleaning assembly can also include a plurality of cleaning pipelines 31 and a plurality of cleaning agent storage members 33 arranged on the cleaning pipe, and the like, the adjustment and change of the specific setting form of the cleaning assembly do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0084] Preferably, the water purification equipment of the utility model further includes a protection member, the protection member is arranged between the circulating pump 62 and the cleaning outlet 302, the protection member is arranged to prevent the water in the water inlet main line 1 from flowing back to the cleaning agent storage member 33 through the cleaning outlet 302, and the protection member is also arranged to resist the water pressure in the water inlet main line 1 when the water purification equipment is in the water making mode.

[0085] By setting the protection member, on the one hand, the water in the water inlet main path 1 can be prevented from flowing back to the cleaning agent storage member 33 through the cleaning outlet 302, so that the cleaning agent can be prevented from being damp and caked or even dissolved in advance, and on the other hand, since the circulating pump 62 is not resistant to high pressure, when the water purification equipment is in a normal water production mode, the protection member can also resist the water pressure in the water inlet main path 1, so as to avoid the problem that the circulating pump 62 leaks due to excessive water pressure in the water inlet main path 1.

[0086] It should be noted that in actual application, the protection member can be set as a one-way valve, or the protection member can be set as a pressure reducing valve, or the protection member can be set as a control valve such as a ball valve or a solenoid valve, or the protection member can be set as any other possible form, etc. Such adjustment and change of the specific setting type of the protection member does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0087] Preferably, the protection member is a first one-way valve 341.

[0088] It should be noted that in order to more effectively prevent the water in the water inlet main path 1 from penetrating into the cleaning agent storage member 33, a second one-way valve 342 can also be provided on the first cleaning pipeline 311 and / or the second cleaning pipeline 312.

[0089] As shown in Figure 2 , Figure 4 , Figure 6 The water purification equipment of the present application also includes a second one-way valve 342 provided on the first cleaning pipeline 311 or the second cleaning pipeline 312.

[0090] It should be noted that it is not limited to preventing the water in the water inlet main path 1 from flowing back to the cleaning agent storage member 33 by setting the protection member, for example, a backflow prevention structure can also be provided in the cleaning agent storage member 33 to prevent the water in the water inlet main path 1 from entering the cleaning agent storage member 33 through the cleaning outlet 302, etc. Such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0091] It should be noted that in actual application, the present application does not make any limitation on the specific communication mode of the pure water end of the reverse osmosis membrane filter core selectively communicating with the pure water water member 51 or the water inlet main path 1, as long as the pure water end of the reverse osmosis membrane filter core can selectively communicate with the pure water water member 51 or the water inlet main path 1.

[0092] In one specific embodiment, as shown in Figure 1 and Figure 2As shown, the water purification device further comprises a pure water outlet pipe 5, a backflow pipe 22 and a backflow valve 221, the first end of the backflow pipe 22 is communicated with the pure water outlet pipe, the second end of the backflow pipe 22 is communicated with the water inlet main path 1, and the backflow valve 221 is arranged on the backflow pipe 22 and is used for controlling the opening and closing of the backflow pipe 22.

[0093] When the cleaning assembly cleans the reverse osmosis membrane filter core 2, the backflow valve 221 is first opened, so that the water containing cleaning agent residues in the pure water end of the reverse osmosis membrane filter core 2 is transported into the water inlet main path 1 through the backflow valve 221, thereby avoiding the water in the pure water end of the reverse osmosis membrane filter core 2 from flowing into the pure water water member 51, and when the water in the pure water end of the reverse osmosis membrane filter core 2 does not contain cleaning agent, the backflow valve 221 is closed, so that the pure water end of the reverse osmosis membrane filter core 2 is communicated with the pure water water member 51, and the water purification device returns to normal water production.

[0094] In another specific embodiment, as shown in Figure 3 and Figure 4 As shown, the water purification device further comprises a pure water outlet pipe 5, a backflow pipe 22 and a first reversing valve 23, the first interface of the first reversing valve 23 is communicated with the pure water end of the reverse osmosis membrane filter core 2, the second interface of the first reversing valve 23 is communicated with the pure water outlet pipe, the third interface of the first reversing valve 23 is communicated with the first end of the backflow pipe 22, the second end of the backflow pipe 22 is communicated with the water inlet main path 1, and the first interface of the first reversing valve 23 can be selectively communicated with the second interface or the third interface.

[0095] When the cleaning assembly cleans the reverse osmosis membrane filter core 2, the first interface of the first reversing valve 23 is first communicated with the third interface, so that the water containing cleaning agent residues in the pure water end of the reverse osmosis membrane filter core 2 is transported into the water inlet main path 1 through the backflow valve 221, thereby avoiding the water in the pure water end of the reverse osmosis membrane filter core 2 from flowing into the pure water water member 51, and when the water in the pure water end of the reverse osmosis membrane filter core 2 does not contain cleaning agent, the first interface of the first reversing valve 23 is communicated with the second interface, so that the pure water end of the reverse osmosis membrane filter core 2 is communicated with the pure water water member 51, and the water purification device returns to normal water production.

[0096] It should be noted that, in actual application, when the water containing cleaning agent residues in the pure water end of the reverse osmosis membrane filter core 2 is transported into the water inlet main path 1, whether the water containing cleaning agent residues is transported to the outside of the water purification device can be determined according to experience, or the water quality information of the pure water flowing out of the pure water end of the reverse osmosis membrane filter core 2 can be detected to determine whether the water containing cleaning agent residues is transported to the outside of the water purification device, and the like, and such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0097] Preferably, as shown in Figures 1 to 6As shown, the water purification equipment further comprises a first water quality detection component 52, and the first water quality detection component 52 is used for detecting water quality information of the pure water end of the reverse osmosis membrane filter core 2.

[0098] By arranging the first water quality detection component 52, the water quality information of the pure water end of the reverse osmosis membrane filter core 2 can be accurately detected, and then the pure water end of the reverse osmosis membrane filter core 2 can be selectively communicated with the pure water component 51 or the water inlet main line 1 according to the water quality information of the pure water end of the reverse osmosis membrane filter core 2, which not only helps to completely discharge the water containing detergent residues, but also saves water sources and further improves the use experience of users.

[0099] It should be noted that the specific arrangement type of the first water quality detection component 52 is not limited in the utility model, for example, the first water quality detection component 52 can be arranged as a pH sensor, or the first water quality detection component 52 can be arranged as a TDS sensor, or the first water quality detection component 52 can be arranged as a pH sensor and a TDS sensor, and the like, and the adjustment and change of the specific arrangement type of the first water quality detection component 52 do not deviate from the principles and ranges of the utility model, and should be included in the protection range of the utility model.

[0100] Preferably, the first water quality detection component 52 comprises at least one of a pH sensor or a TDS sensor.

[0101] It should be noted that in actual application, the first water quality detection component 52 can be arranged on the pure water outlet pipe 5, or the first water quality detection component 52 can be arranged on the backflow pipe 22, or the first water quality detection component 52 can be arranged between the reverse osmosis membrane filter core 2 and the first reversing valve 23, and the like, and the adjustment and change of the specific arrangement position of the first water quality detection component 52 do not deviate from the principles and ranges of the utility model, and should be included in the protection range of the utility model.

[0102] Exemplarily, as shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 , the first water quality detection component 52 is arranged on the pure water outlet pipe 5.

[0103] Exemplarily, as shown in Figure 3 and Figure 4 , the first water quality detection component 52 is arranged between the reverse osmosis membrane filter core 2 and the first reversing valve 23.

[0104] Preferably, the first water quality detection component 52 is in communication connection with the backflow valve 221 or the first reversing valve 23.

[0105] Through such a setting, the pure water end of the reverse osmosis membrane filter core 2 can be selectively communicated with the pure water water member 51 or the water inlet main path 1 according to the detection result of the first water quality detection member 52 and by adjusting the backflow valve 221 or the reversing valve 23, so that the water purification equipment is more intelligent, and the user's use experience is further improved.

[0106] It should be noted that in actual application, the first water quality detection member 52 and the backflow valve 221 (or the first reversing valve 23) can be arranged to be in communication connection with the controller of the water purification equipment, or the first water quality detection member 52 and the backflow valve 221 (or the first reversing valve 23) can be arranged to be in communication connection with the mobile device (tablet computer or mobile phone) of the user, and the like. Such adjustment and change of the specific connection mode of the communication connection between the first water quality detection member 52 and the backflow valve 221 or the first reversing valve 23 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0107] Preferably, the first water quality detection member 52 and the backflow valve 221 (or the first reversing valve 23) are in communication connection with the controller of the water purification equipment.

[0108] It should be noted that in actual application, the present application does not make any limitation on the specific connection mode of the first end of the circulation pipe 61 and the waste water end of the reverse osmosis membrane filter core 2, for example, the first end of the circulation pipe 61 can be arranged to be directly communicated with the waste water outlet pipe 21, or the first end of the circulation pipe 61 can be arranged to be communicated with the waste water end of the reverse osmosis membrane filter core 2 through the waste water outlet pipe 21, and the like. Such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0109] Preferably, the first end of the circulation pipe 61 is communicated with the waste water end of the reverse osmosis membrane filter core 2 through the waste water outlet pipe 21, and the liquid in the cleaning loop can also be discharged through the waste water outlet pipe 21.

[0110] Through such a setting, not only the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core 2 and the waste water end of the reverse osmosis membrane filter core 2 can be sequentially communicated to form a cleaning loop, which is convenient for cleaning the reverse osmosis membrane filter core 2, but also the cleaning liquid in the cleaning loop can be discharged through the waste water outlet pipe 21 after cleaning, so that an additional drainage pipeline is not needed.

[0111] The specific mode of the first end of the circulation pipe 61 being communicated with the waste water end of the reverse osmosis membrane filter core 2 through the waste water outlet pipe 21 will be introduced below in combination with the following two cases.

[0112] Case 1:

[0113] For example, Figures 1 to 4As shown, the wastewater outlet pipe 21 is in communication with the wastewater end of the reverse osmosis membrane filter core 2, and the first end of the circulation pipe 61 is in communication with the wastewater outlet pipe 21.

[0114] Through such an arrangement, during normal water production, the wastewater filtered by the reverse osmosis membrane filter core 2 can flow out through the wastewater outlet pipe 21, and when the cleaning of the reverse osmosis membrane filter core 2 is completed, the cleaning wastewater can also flow out through the wastewater outlet pipe 21, without the need to additionally increase a drainage member for the water purification device, so as to realize the drainage of the cleaning wastewater in the reverse osmosis membrane filter core 2 and reduce the cost of the water purification device; the circulation pipe 61 is arranged in communication with the wastewater outlet pipe 21, so as to facilitate the simplification of the pipeline connection of the water purification device.

[0115] It should be noted that, in actual application, the first end of the circulation pipe 61 can be arranged at the upstream end of the wastewater valve 211, or the first end of the circulation pipe 61 can be arranged at the downstream end of the wastewater valve 211, and the like, and such adjustment and change of the specific arrangement position of the first end of the circulation pipe 61 and the wastewater valve 211 do not deviate from the principles and ranges of the present application, and should be included in the protection scope of the present application.

[0116] Preferably, as shown, Figures 1 to 4 The water purification device further comprises a wastewater valve 211 arranged 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.

[0117] Through such an arrangement, when the cleaning assembly cleans the reverse osmosis membrane filter core 2, the dirt cleaned can be prevented from entering the wastewater valve 211 to cause the pollution and blockage of the wastewater valve 211, and the service life of the wastewater valve 211 can be prolonged.

[0118] It should be noted that, in actual application, the wastewater valve 211 can be arranged in a type having a shut-off function, when it is necessary to clean the reverse osmosis membrane filter core 2, the opening and closing of the wastewater outlet pipe 21 is controlled by adjusting the wastewater valve 211, so as to prevent the water in the reverse osmosis membrane filter core 2 from flowing out through the wastewater outlet pipe 21, or a shut-off valve can be arranged on the wastewater outlet pipe 21, when it is necessary to clean the reverse osmosis membrane filter core 2, the water in the reverse osmosis membrane filter core 2 is prevented from flowing out through the wastewater outlet pipe 21 by closing the shut-off valve, and the like, and such adjustment and change of the specific arrangement type of the wastewater valve 211 do not deviate from the principles and ranges of the present application, and should be included in the protection scope of the present application.

[0119] Preferably, the water purification device further comprises a shut-off valve (not shown in the figure), which is arranged on the wastewater outlet pipe 21 and is used to control the opening and closing of the wastewater outlet pipe 21.

[0120] Case 2:

[0121] AsFigure 5 and Figure 6 As shown in FIG. 1 and FIG. 2, the waste water end of the reverse osmosis membrane filter core 2 can selectively communicate with the first end of the waste water outlet pipe 21 or the circulation pipe 61.

[0122] Through such a setting, when the water purification equipment is in a normal water production mode, the waste water end of the reverse osmosis membrane filter core 2 is communicated with the waste water outlet pipe 21, and the filtered waste water flows out through the waste water outlet pipe 21; when the water purification equipment is in a cleaning mode, the waste water end of the reverse osmosis membrane filter core 2 is communicated with the first end of the circulation pipe 61, so that the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core 2 and the waste water end of the reverse osmosis membrane filter core 2 are sequentially communicated to form a cleaning loop, thereby achieving convenient switching between the water production mode and the cleaning mode, and further improving the user experience.

[0123] It should be noted that in actual application, the specific communication mode of the water purification equipment for selectively communicating the waste water end of the reverse osmosis membrane filter core 2 with the first end of the waste water outlet pipe 21 or the circulation pipe 61 is not limited in any way, for example, a second reversing valve 7 can be provided, wherein the first interface of the second reversing valve 7 is communicated with the waste water end of the reverse osmosis membrane filter core 2, the second interface of the second reversing valve 7 is communicated with the waste water outlet pipe 21, and the third interface of the second reversing valve 7 is communicated with the first end of the circulation pipe 61, or a three-way pipe can be provided, the first end of the three-way pipe is communicated with the waste water end of the reverse osmosis membrane filter core 2, the second end and the third end of the three-way pipe are respectively communicated with the first end of the waste water outlet pipe 21 or the circulation pipe 61, and the waste water outlet pipe 21 and the circulation pipe 61 are respectively provided with a first valve and a second valve to enable the waste water end of the reverse osmosis membrane filter core 2 to selectively communicate with the first end of the waste water outlet pipe 21 or the circulation pipe 61, and the like. Such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0124] Preferably, as shown in FIG. 1 and FIG. 2, the water purification equipment further comprises a second reversing valve 7, wherein the first interface of the second reversing valve 7 is communicated with the waste water end of the reverse osmosis membrane filter core 2, the second interface of the second reversing valve 7 is communicated with the waste water outlet pipe 21, and the third interface of the second reversing valve 7 is communicated with the first end of the circulation pipe 61, and the first interface of the second reversing valve 7 can selectively communicate with the second interface or the third interface. Figure 5 Figure 6 Through such a setting, the pipeline connection can be further simplified, and the simplicity of the water purification equipment is improved.

[0125] Preferably, as shown in FIG. 1 and FIG. 2, the water purification equipment further comprises a second reversing valve 7, wherein the first interface of the second reversing valve 7 is communicated with the waste water end of the reverse osmosis membrane filter core 2, the second interface of the second reversing valve 7 is communicated with the waste water outlet pipe 21, and the third interface of the second reversing valve 7 is communicated with the first end of the circulation pipe 61, and the first interface of the second reversing valve 7 can selectively communicate with the second interface or the third interface.

[0126] Preferably, as shown in FIG. 1 and FIG. 2, the water purification equipment further comprises a second water quality detection member 63, which is arranged on the cleaning loop and is used to detect the water quality information in the cleaning loop. Figures 1 to 6 Preferably, as shown in FIG. 1 and FIG. 2, the water purification equipment further comprises a second water quality detection member 63, which is arranged on the cleaning loop and is used to detect the water quality information in the cleaning loop.​

[0127] Through the arrangement, when the cleaning assembly cleans the reverse osmosis membrane filter core 2, the cleaning liquid circulates in the cleaning loop and repeatedly flushes the reverse osmosis membrane filter core 2, and the dirt on the reverse osmosis membrane filter core 2 is broken into the cleaning liquid and circulates in the cleaning loop with the cleaning liquid. Since the water purification equipment is used in areas with good water quality and areas with poor water quality, the pollution degree of the reverse osmosis membrane filter core 2 is different, and the cleaning time is also different. By arranging the second water quality detection member 63, the water quality information of the cleaning liquid in the cleaning loop can be detected, and when the water quality in the cleaning loop no longer changes, it means that the dirt on the reverse osmosis membrane filter core 2 no longer enters the cleaning liquid, that is, the reverse osmosis membrane filter core 2 is cleaned. Therefore, the cleaning of the reverse osmosis membrane filter core 2 can be accurately completed according to the pollution degree of the reverse osmosis membrane filter core 2. On the one hand, it can avoid the problem that the cleaning time is too short to completely remove the dirt on the reverse osmosis membrane filter core 2, and on the other hand, it can also avoid the problem of energy waste caused by too long cleaning time.

[0128] It should be noted that in actual application, the second water quality detection member 63 can be arranged as a TDS sensor, or the second water quality detection member 63 can be arranged as a turbidity sensor, or the second water quality detection member 63 can be arranged as any other possible detection device, etc. Such adjustment and change of the specific arrangement type of the second water quality detection member 63 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0129] Preferably, the second water quality detection member 63 is a turbidity sensor.

[0130] It should be noted that in actual application, the present application does not make any limitation on the specific arrangement position of the second water quality detection member 63 on the cleaning loop, as long as the water quality information in the cleaning loop can be detected. For example, the second water quality detection member 63 can be arranged on the circulating pipe 61, or the second water quality detection member 63 can be arranged on the cleaning pipe 31, or the second water quality detection member 63 can be arranged on the water inlet main line 1 between the cleaning outlet 302 and the water inlet end of the reverse osmosis membrane filter core 2, etc. Such adjustment and change of the specific arrangement position of the second water quality detection member 63 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0131] Exemplarily, as shown in Figures 1 to 6 The second water quality detection member 63 is arranged on the circulating pipe 61.

[0132] Preferably, the second water quality detecting member 63 is arranged on the waste water outlet pipe 21 and located at the upstream end of the circulation pipe 61, so that the second water quality detecting member 63 can detect the water quality information in the cleaning circuit and the water quality information in the waste water outlet pipe 21, thereby saving the number of water quality detecting members and reducing the cost of the water purification device.

[0133] It should be noted that after the cleaning assembly finishes cleaning the reverse osmosis membrane filter core 2, the cleaning liquid in the cleaning circuit can flow out through the waste water outlet pipe 21, and after the cleaning liquid in the cleaning circuit is emptied, the water in the water inlet main circuit 1 enters the reverse osmosis membrane filter core 2 to flush the reverse osmosis membrane filter core 2, so as to flush out the residual cleaning agent in the reverse osmosis membrane filter core 2, and the flushing waste water also flows out through the waste water outlet pipe 21.

[0134] Preferably, as shown in Figures 1 to 6 The water purification device further comprises a third water quality detecting member 212 arranged on the waste water outlet pipe 21 and used for detecting the water quality information in the waste water outlet pipe 21.

[0135] By arranging the third water quality detecting member 212, when the waste water generated by flushing the reverse osmosis membrane filter core 2 enters the waste water outlet pipe 21, the water quality information in the waste water outlet pipe 21 can be detected, so that whether the residual cleaning agent in the reverse osmosis membrane filter core 2 has been completely flushed out can be determined according to the detection data of the third water quality detecting member 212, and then the water source can be saved.

[0136] It should be noted that in actual application, the third water quality detecting member 212 can be arranged as a TDS sensor, or can be arranged as a PH sensor, or can be arranged as any other possible detecting device, and the like, and such adjustment and change of the specific arrangement type of the third water quality detecting member 212 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0137] Exemplarily, the third water quality detecting member 212 is a TDS sensor.

[0138] It should be noted that in actual application, the present application does not make any limitation on the specific arrangement position of the third water quality detecting member 212 on the waste water outlet pipe 21. For example, the third water quality detecting member 212 can be arranged at the upstream end of the waste water valve 211, or can be arranged at the downstream end of the waste water valve 211, and the like, and such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0139] Exemplarily, as shown inFigures 1 to 6 As shown, the third water quality detection member 212 is arranged at the upstream end of the wastewater valve 211.

[0140] It should be noted that in actual application, the specific structure of the cleaning agent storage member 33 is not limited, as long as it can store cleaning agent, for example, the cleaning agent storage member 33 can be arranged to have only a cavity 3302, and the cleaning agent is stored in the cavity 3302, or the cleaning agent storage member 33 can be arranged to have a cavity 3302, and when it is in the first working state, the cleaning agent can be stored in the cavity 3302, and when it is in the second working state, the impurities in the cleaning circuit can be collected into the cavity 3302, and the like. The adjustment and change of the specific setting type of the cleaning agent storage member 33 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0141] Preferably, as shown, the cleaning agent storage member 33 of the present application has a cavity 3302, and the cleaning agent storage member 33 is arranged to store cleaning agent in the cavity 3302 when it is in the first working state, and to collect impurities in the cleaning circuit into the cavity 3302 when it is in the second working state. Figures 7 to 9

[0142] Through such arrangement, when the reverse osmosis membrane filter core 2 does not need to be cleaned, the cleaning agent can be stored in the cavity 3302, when the cleaning assembly cleans the reverse osmosis membrane filter core 2, the water in the water inlet main circuit 1 enters the cavity 3302 to dissolve the cleaning agent to form cleaning liquid, and under the action of the circulating pump 62, the cleaning agent circulates in the cleaning circuit, thereby washing the dirt on the surface of the reverse osmosis membrane filter core 2, when the dirt flows in the cleaning circuit with the cleaning liquid and flows into the cavity 3302, the collected impurities are collected into the cavity 3302, avoiding secondary pollution of the reverse osmosis membrane filter core 2 by the washed impurities, and further improving the cleaning effect of the cleaning assembly on the reverse osmosis membrane filter core 2.

[0143] ​It should be noted that in actual application, the cleaning agent storage member 33 can be provided with the storage box 3301 and the filter screen 3307 arranged in the storage box 3301, the storage box 3301 is formed with the cavity 3302, and the filter screen 3307 can allow the cleaning liquid to flow out of the cavity 3302 and prevent impurities from flowing out of the cavity 3302, or the cleaning agent storage member 33 can be provided with only the storage box 3301, the storage box 3301 is formed with the cavity 3302, a plurality of through holes for the cleaning liquid to pass through are arranged on one side of the storage box 3301, and the like, and the adjustment and change of the specific structure of the cleaning agent storage member 33 do not deviate from the principles and ranges of the present application, and should be included in the protection scope of the present application.

[0144] Preferably, as shown in the drawings, Figures 7 to 9 The cleaning agent storage member 33 of the present application comprises the storage box 3301 and the filter screen 3307, the storage box 3301 is formed with the cavity 3302, and the filter screen 3307 can allow the cleaning liquid to flow out of the cavity 3302 and prevent impurities from flowing out of the cavity 3302.

[0145] It should be noted that the filter screen 3307 can also prevent undissolved or lumped cleaning agents from passing through, thereby avoiding the block-shaped cleaning agent from entering the reverse osmosis membrane filter core 2 to pierce the filter membrane of the reverse osmosis membrane filter core 2, and further improving the user experience.

[0146] It should be noted that in actual application, the present application does not make any limitation on the specific arrangement position of the filter screen 3307, as long as the cleaning liquid can flow out of the cavity 3302 and the impurities can be prevented from flowing out of the cavity 3302, for example, the filter screen 3307 can be arranged to separate the cavity 3302 into the first chamber 33021 and the second chamber 33022 which are sequentially distributed along the water flow direction.

[0147] The specific arrangement position of the filter screen 3307 will be described in detail below. Figures 7 to 9

[0148] Case 1:

[0149] As shown in the drawings, Figure 7 The storage box 3301 has the liquid inlet 3303 and the liquid outlet 3304, the filter screen 3307 is arranged in the storage box 3301 and separates the cavity 3302 into the first chamber 33021 and the second chamber 33022 which are spaced apart along the horizontal direction, wherein the first chamber 33021 is in communication with the liquid inlet 3303, and the second chamber 33022 is in communication with the liquid outlet 3304.

[0150] ​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.

[0151] Of course, filter 3307 can also be placed near the liquid outlet 3304.

[0152] Scenario 2:

[0153] like Figure 8 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 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.

[0154] 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.

[0155] Scenario 3:

[0156] 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.

[0157] 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.

[0158] 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 deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0159] Preferably, the storage box is further provided with a sewage outlet, and the cleaning agent storage member 33 further comprises a sewage valve 3308 arranged at the sewage outlet, so as to open or close the sewage outlet.

[0160] By arranging the sewage valve 3308, when the cleaning of the reverse osmosis membrane filter core 2 is completed, the sewage outlet can be conveniently opened, so that the collected impurities in the cavity can be discharged through the sewage outlet, bacteria breeding is avoided, and the use experience of the user is further improved.

[0161] Preferably, the storage box is further provided with a feeding port, and the cleaning agent storage member 33 further comprises a cover arranged at the feeding port, so as to open the feeding port for the user to put the cleaning agent.

[0162] Preferably, the water purification equipment of the utility model further comprises a heating member (not shown in the figure), which is arranged to heat the cleaning liquid in the cleaning circuit.

[0163] By arranging the heating member, the cleaning liquid in the cleaning circuit can be heated, on the one hand, the solubility of the cleaning agent can be improved, so that the concentration of the cleaning agent in the cleaning liquid is not affected due to the existence of unsolved cleaning agent, on the other hand, the dirt on the reverse osmosis membrane filter core can also be dissolved, so that the cleaning speed and cleaning efficiency of the reverse osmosis membrane filter core are improved.

[0164] It should be noted that the utility model does not make any limitation on the specific arrangement position of the heating member on the cleaning circuit, for example, the heating member can be arranged on the cleaning pipeline, or the heating member can also be arranged on the circulating pipe, or the heating member can also be arranged outside the cleaning agent storage member 33, etc., the adjustment and change of the specific arrangement position of the heating member do not deviate from the principle and range of the utility model, and should be included in the protection range of the utility model.

[0165] In one specific embodiment, the heating member is arranged on the cleaning pipeline.

[0166] For example, the heating member can be arranged at the upstream end of the cleaning agent storage member 33, or the heating member can also be arranged at the downstream end of the cleaning agent storage member 33.

[0167] In another specific embodiment, the heating member is arranged outside the cleaning agent storage member 33.

[0168] Preferably, as shown in Figures 1 to 4 The water purification equipment of the utility model further comprises a pre-filtering unit 4, the water outlet end of the pre-filtering unit 4 is communicated with the water inlet main circuit 1, and the cleaning inlet 301 is located at the downstream end of the pre-filtering unit 4.

[0169] By such an arrangement, i.e. by arranging the cleaning inlet 301 to be located at the downstream end of the pre-filter unit 4, the clean water filtered by the pre-filter unit 4 can be made to enter the cleaning agent storage member 33 through the cleaning inlet 301, and the cleaning agent is dissolved by the clean water filtered by the pre-filter unit 4, so that the solubility of the cleaning agent and the cleanliness of the cleaning liquid are improved, thereby effectively improving the cleaning effect of the reverse osmosis membrane filter core 2.

[0170] It should be noted that in actual applications, the pre-filter unit 4 can be arranged as a pre-filter core, or the pre-filter unit 4 can also be arranged as a composite filter core including a pre-filter core and a post-filter core, etc., and such adjustment and change of the specific type of the pre-filter unit 4 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0171] Preferably, the pre-filter unit 4 is a pre-filter core.

[0172] Preferably, as shown in Figures 1 to 4 The water purification device further includes a water inlet valve 11 arranged on the water inlet main path 1, the cleaning inlet 301 is located at the upstream end of the water inlet valve 11, and the cleaning outlet 302 is located at the downstream end of the water inlet valve 11.

[0173] By such an arrangement, when the reverse osmosis membrane filter core 2 needs to be cleaned, the water in the water inlet main path 1 can be prevented from directly entering the reverse osmosis membrane filter core 2 by controlling the water inlet valve 11, thereby avoiding diluting the cleaning liquid entering the reverse osmosis membrane filter core 2.

[0174] It should be noted that in actual applications, the cleaning inlet 301 is not limited to being arranged at the upstream end of the water inlet valve 11, and the cleaning outlet 302 is not limited to being arranged at the downstream end of the water inlet valve 11, for example, the cleaning inlet 301 and the cleaning outlet 302 can also be arranged at the upstream end of the water inlet valve 11, or the cleaning inlet 301 and the cleaning outlet 302 can also be arranged at the downstream end of the water inlet valve 11, etc., and such adjustment and change of the relative positions of the cleaning assembly and the water inlet valve 11 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, preferably, the cleaning inlet 301 is arranged at the upstream end of the water inlet valve 11, and the cleaning outlet 302 is arranged at the downstream end of the water inlet valve 11.

[0175] It should be further noted that in actual applications, the booster pump 12 can be arranged at the upstream end of the water inlet valve 11, or the booster pump 12 can also be arranged at the downstream end of the water inlet valve 11, etc., and such adjustment and change of the specific arrangement positions of the booster pump 12 and the water inlet valve 11 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0176] Preferably, as shown in the drawings, the booster pump 12 is located at the upstream end of the water inlet valve 11, and the cleaning inlet 301 is located between the booster pump 12 and the water inlet valve 11. Figures 1 to 4

[0177] By setting the booster pump 12 at the upstream end of the water inlet valve 11 and setting the cleaning inlet 301 between the booster pump 12 and the water inlet valve 11, the cleaning inlet 301 can be located at the downstream end of the booster pump 12, so that the water in the water inlet main line 1 can be pumped into the cleaning assembly and delivered into the reverse osmosis membrane filter element 2 through the booster pump 12, thereby improving the cleaning efficiency and cleaning effect.

[0178] It should be noted that in actual application, the water purification device can be set as a water purifier, or can also be set as a net-drink integrated machine, or can also be set as any other possible type, etc., and such adjustment and change of the specific setting type of the water purification device do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0179] Exemplarily, the water purification device is a water purifier.

[0180] So far, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the present application, and the technical scheme after such changes or replacements will fall within the protection scope of the present application.​

Claims

1. A water purification apparatus, characterized by comprising: The water purification device comprises: a reverse osmosis membrane filter core; a cleaning assembly having a cleaning agent storage member for storing a cleaning agent, the cleaning assembly being capable of communicating with a water inlet end of the reverse osmosis membrane filter core so as to deliver the cleaning liquid to the reverse osmosis membrane filter core; a circulation pipe, a first end of the circulation pipe communicating with a wastewater end of the reverse osmosis membrane filter core, a second end of the circulation pipe communicating with the cleaning assembly, so that the cleaning assembly, the water inlet end and the wastewater end of the reverse osmosis membrane filter core are sequentially communicated to form a cleaning loop; and a pure water water member for outputting water at a pure water end of the reverse osmosis membrane filter core for a user to drink; wherein the water purification device is configured to drive the cleaning liquid to circulate in the cleaning loop, and the pure water end of the reverse osmosis membrane filter core is capable of being selectively communicated with the pure water water member or the water inlet end of the reverse osmosis membrane filter core.

2. The water purification apparatus according to claim 1, characterized by The cleaning assembly has a cleaning outlet, and the water purification device further comprises a water inlet main line, a circulating pump, and a booster pump arranged on the water inlet main line, the water inlet main line communicating with the water inlet end of the reverse osmosis membrane filter core, the cleaning outlet communicating with the water inlet main line and being located at a downstream end of the booster pump, the circulating pump being arranged on the cleaning loop and being used to drive the cleaning liquid to circulate in the cleaning loop, wherein the pure water end of the reverse osmosis membrane filter core is capable of being selectively communicated with the pure water water member or the water inlet main line.

3. The water purification apparatus according to claim 2, characterized by The water purification device further comprises a pure water outlet pipe, a backflow pipe, and a backflow valve, a first end of the backflow pipe communicating with the pure water outlet pipe, a second end of the backflow pipe communicating with the water inlet main line, the backflow valve being arranged on the backflow pipe and being used to control the opening and closing of the backflow pipe; Alternatively, the water purification device further comprises a pure water outlet pipe, a backflow pipe, and a first reversing valve, a first interface of the first reversing valve communicating with the pure water end of the reverse osmosis membrane filter core, a second interface of the first reversing valve communicating with the pure water outlet pipe, a third interface of the first reversing valve communicating with a first end of the backflow pipe, a second end of the backflow pipe communicating with the water inlet main line, the first interface of the first reversing valve being capable of being selectively communicated with the second interface or the third interface.

4. The water purification apparatus according to claim 2, characterized by The cleaning assembly further has a cleaning pipeline, two ends of the cleaning pipeline forming a cleaning inlet and a cleaning outlet respectively, the cleaning inlet communicating with the water inlet main line so that water in the water inlet main line enters the cleaning agent storage member to form the cleaning liquid, the cleaning outlet communicating with the water inlet main line so that the cleaning liquid in the cleaning agent storage member enters the reverse osmosis membrane filter core through the water inlet main line, wherein the second end of the circulation pipe communicates with the cleaning pipeline.

5. The water purification apparatus according to claim 4, characterized by The cleaning assembly comprises a cleaning pipeline, and a cleaning valve and a cleaning agent storage member arranged on the cleaning pipeline, two ends of the cleaning pipeline forming the cleaning inlet and the cleaning outlet respectively, the cleaning agent storage member being located at a downstream end of the cleaning valve and being used to store an acidic cleaning agent or an alkaline cleaning agent, the circulating pump being arranged on the cleaning pipeline; Alternatively, the cleaning assembly comprises a collecting pipe, at least two cleaning pipes arranged in parallel, cleaning valves arranged on each of the cleaning pipes, and a cleaning agent storage member, first ends of the cleaning pipes are connected and communicated with the cleaning inlet, second ends of the cleaning pipes are connected and communicated with the collecting pipe, an end of the collecting pipe forms the cleaning outlet, the cleaning agent storage member is arranged at a downstream end of the cleaning valve, the cleaning agent storage member on each of the cleaning pipes is used for storing different types of cleaning agents, and the circulating pump is arranged on the collecting pipe.

6. The water purification apparatus according to claim 5, characterized by The water purification device further comprises a protection member arranged between the circulating pump and the cleaning outlet, the protection member is arranged to prevent water in the main water inlet from flowing back to the cleaning agent storage member through the cleaning outlet, and the protection member is further arranged to resist water pressure in the main water inlet when the water purification device is in a water production mode.

7. The water purification apparatus according to claim 6, characterized by The protection member comprises at least one of a one-way valve, a pressure reducing valve, or a control valve.

8. The water purification apparatus of claim 1, wherein The water purification device further comprises a waste water outlet pipe and a waste water valve arranged on the waste water outlet pipe, wherein the waste water outlet pipe is communicated with a waste water end of the reverse osmosis membrane filter core, and a first end of the circulating pipe is communicated with the waste water outlet pipe and located at an upstream end of the waste water valve; and / or, the waste water end of the reverse osmosis membrane filter core is selectively communicated with the waste water outlet pipe or the first end of the circulating pipe.

9. The water purification apparatus of claim 8, wherein The water purification device further comprises a first water quality detection member for detecting water quality information of a pure water end of the reverse osmosis membrane filter core; and / or, the water purification device further comprises a second water quality detection member for detecting water quality information in the cleaning circuit; and / or, the water purification device further comprises a third water quality detection member arranged on the waste water outlet pipe and used for detecting water quality information in the waste water outlet pipe.

10. The water purification apparatus according to any one of claims 1 to 9, characterized by The cleaning agent storage member has a cavity, and is arranged to store cleaning agents 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.

Images