Water purification equipment

Abstract

The utility model relates to the technical field of water purification, in particular to water purification equipment, and aims to solve the problem that the use experience of a user is influenced due to the fact that a reverse osmosis membrane filter element cannot be sterilized or the sterilization effect is poor after the reverse osmosis membrane filter element is cleaned by the conventional water purification equipment. The water purification equipment comprises a reverse osmosis membrane filter element, a cleaning assembly and a circulating pipe, the cleaning assembly is provided with a cleaning outlet, a cleaning module and a sterilization module, the cleaning module is used for conveying a cleaning solution to the reverse osmosis membrane filter element, and the sterilization module is used for conveying a sterilization solution to the reverse osmosis membrane filter element; the cleaning module and / or the sterilizing module, the water inlet end of the reverse osmosis membrane filter element and the wastewater end of the reverse osmosis membrane filter element can be sequentially communicated through the circulating pipe to form a circulating loop, and the water purifying equipment can drive the cleaning liquid and / or the sterilizing liquid to circularly flow in the circulating loop. According to the reverse osmosis membrane filter element, the sterilization liquid can circularly flow in the circulation loop, the sterilization efficiency of the reverse osmosis membrane filter element can be improved, 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, water purification integrated machine gradually becomes the necessary drinking water facilities in people's daily life.

[0003] After a long time of use, the 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.

[0004] In the prior art, the reverse osmosis membrane filter element is cleaned by cleaning liquid, which can remove the dirt on the reverse osmosis membrane filter element and prolong the service life of the reverse osmosis membrane filter element. Although the dirt on the reverse osmosis membrane filter element can be cleaned after cleaning, since the dirt contains a large number of microorganisms, the existing water purification equipment cannot sterilize the reverse osmosis membrane filter element after cleaning. Some water purification equipment can sterilize the reverse osmosis membrane filter element by soaking, but the sterilization effect is poor and the sterilization efficiency is low, which affects the user's experience. SUMMARY

[0005] The utility model aims to at least solve the above technical problems to some extent, that is, to at least solve the problem that the existing water purification equipment cannot sterilize the reverse osmosis membrane filter element after cleaning or the sterilization effect is poor, affecting the user's experience.

[0006] In a first aspect, the utility model provides a water purification equipment, which comprises: a reverse osmosis membrane filter element; a cleaning assembly having a cleaning outlet, a cleaning module and a sterilization module connected in parallel, the cleaning outlet being in communication with the water inlet end of the reverse osmosis membrane filter element, the cleaning module being used for delivering cleaning liquid to the reverse osmosis membrane filter element, and the sterilization module being used for delivering sterilization liquid to the reverse osmosis membrane filter element; and a circulation pipe, the first end of which is in communication with the wastewater end of the reverse osmosis membrane filter element, and the second end of which is in communication with the cleaning module and / or the sterilization module, so that the cleaning module and / or the sterilization module, the water inlet end of the reverse osmosis membrane filter element and the wastewater end of the reverse osmosis membrane filter element are sequentially connected to form a circulation loop, wherein the water purification equipment is arranged to drive the cleaning liquid and / or the sterilization liquid to circulate in the circulation loop.

[0007] In the preferred technical scheme of the water purification device, the water purification device further comprises a water inlet main path in communication with the water inlet end of the reverse osmosis membrane filter element, wherein: the water purification device further comprises a booster pump arranged on the water inlet main path and located at the upstream end of the cleaning outlet, and a circulating pump arranged on the circulating loop and used to drive the cleaning liquid and / or the sterilizing liquid to circulate in the circulating loop; and / or, the cleaning assembly further has a cleaning inlet in communication with the water inlet main path, so that the water in the water inlet main path enters the cleaning module and / or the sterilizing module through the cleaning inlet.

[0008] In the preferred technical scheme of the water purification device, the cleaning assembly comprises a converging pipe, cleaning modules and sterilizing modules arranged in parallel, the cleaning module comprises a cleaning pipeline, a cleaning valve arranged on the cleaning pipeline, and a cleaning agent storage member, the sterilizing module comprises a sterilizing pipeline, a sterilizing valve arranged on the sterilizing pipeline, and a sterilizing agent storage member, wherein: the first end of the cleaning pipeline converges with the first end of the sterilizing pipeline and is in communication with the cleaning inlet, the second end of the cleaning pipeline converges with the second end of the sterilizing pipeline and is in communication with the converging pipe, the end of the converging pipe forms the cleaning outlet, and the circulating pump is arranged on the converging pipe.

[0009] In the preferred technical scheme of the water purification device, the number of cleaning pipelines is at least two, a plurality of cleaning pipelines are arranged in parallel, and the cleaning valve and the cleaning agent storage member are arranged one by one corresponding to the cleaning pipeline; and / or, the number of sterilizing pipelines is at least two, a plurality of sterilizing pipelines are arranged in parallel, and the sterilizing valve and the sterilizing agent storage member are arranged one by one corresponding to the sterilizing pipeline.

[0010] In the preferred technical scheme of the water purification device, the cleaning assembly further comprises a first one-way valve arranged on the cleaning pipeline and / or the sterilizing pipeline, the first one-way valve is arranged between the cleaning outlet and the cleaning agent storage member and / or the sterilizing agent storage member, and the first one-way valve is arranged to prevent the water in the water inlet main path from flowing backward to the cleaning agent storage member and / or the sterilizing agent storage member through the cleaning outlet.

[0011] In the preferred technical scheme of the water purification device, the cleaning assembly further comprises a second one-way valve arranged between the cleaning outlet and the circulating pump, and the second one-way valve is arranged to resist the water pressure in the water inlet main path.

[0012] In the preferred technical scheme of the water purification device, the water purification device further comprises a pure water outlet pipe and a pure water water-using member, the pure water end of the reverse osmosis membrane filter core is communicated with the pure water water-using member through the pure water outlet pipe, wherein the water purification device further comprises 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 upstream end of the booster pump, and the backflow valve is arranged on the backflow pipe and is used for controlling the opening and closing of the backflow pipe.

[0013] In the preferred technical scheme of the water purification device, the water purification device further comprises a pure water outlet pipe and a pure water water-using member, the pure water end of the reverse osmosis membrane filter core is communicated with the pure water water-using member through the pure water outlet pipe, wherein the water purification device further comprises 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 upstream end of the booster pump, and the backflow valve is arranged on the backflow pipe and is used for controlling the opening and closing of the backflow pipe.

[0014] In the preferred technical scheme of the water purification device, the cleaning agent storage member and / or the sterilizing agent storage member has a containing cavity, and the cleaning agent storage member and / or the sterilizing agent storage member is arranged to be capable of storing the cleaning agent and / or the sterilizing agent when it is in the first working state and capable of collecting the impurities in the circulating loop into the containing cavity when it is in the second working state.

[0015] In the preferred technical scheme of the water purification device, the water purification device further comprises an auxiliary cleaning member, and the auxiliary cleaning member is arranged to be capable of promoting the action of the cleaning liquid on the dirt on the reverse osmosis membrane filter core so as to make the dirt fall off from the reverse osmosis membrane filter core.

[0016] In the case of adopting the preferred technical scheme, the cleaning module and / or the sterilizing module, the water inlet end of the reverse osmosis membrane filter core and the wastewater end of the reverse osmosis membrane filter core are sequentially communicated to form a circulating loop, the sterilizing module and the water inlet end of the reverse osmosis membrane filter core and the wastewater end of the reverse osmosis membrane filter core are sequentially communicated to form a circulating loop, so that the sterilizing liquid can circulate in the circulating loop, and the sterilizing liquid can sterilize the reverse osmosis membrane filter core after cleaning, avoid affecting the drinking water health of the user due to the breeding of bacteria in the reverse osmosis membrane filter core, and greatly improve the use experience of the user.

[0017] Further, by arranging the booster pump at the upstream end of the cleaning outlet, the cleaning liquid or the sterilizing liquid can be prevented from flowing through the booster pump, thereby preventing the cleaning liquid or the sterilizing liquid from damaging the diaphragm in the booster pump, and avoiding affecting the service life of the booster pump. By arranging the circulating pump to drive the cleaning liquid or the sterilizing liquid to circulate in the circulating loop, the use of the booster pump to drive the cleaning liquid or the sterilizing liquid to circulate in the circulating loop can be avoided, thereby preventing the cleaning liquid or the sterilizing liquid from damaging the diaphragm in the booster pump, improving the service life of the booster pump, and further improving the user experience.

[0018] Further, by arranging the first ends of the cleaning pipeline and the sterilizing pipeline to converge and communicate with the cleaning inlet, and arranging the second ends of the cleaning pipeline and the sterilizing pipeline to converge and communicate with the manifold, the cleaning module and the sterilizing module can be respectively connected to the water inlet end of the reverse osmosis membrane filter cartridge and the wastewater end of the reverse osmosis membrane filter cartridge to form a circulating loop. On the one hand, when the cleaning module cleans the reverse osmosis membrane filter cartridge, the cleaning liquid can circulate in the circulating loop, thereby repeatedly flushing the reverse osmosis membrane filter cartridge and improving the cleaning effect on the reverse osmosis membrane filter cartridge. On the other hand, when the sterilizing module sterilizes the reverse osmosis membrane filter cartridge, the sterilizing liquid can circulate in the circulating loop, thereby repeatedly sterilizing the reverse osmosis membrane filter cartridge and improving the sterilizing effect on the reverse osmosis membrane filter cartridge, greatly improving the user experience.

[0019] Further, by arranging the first one-way valve, when the water purification device is in a normal water production mode, the water in the water inlet main line can be prevented from flowing backward to the cleaning agent storage member and / or the sterilizing agent storage member through the cleaning outlet, thereby preventing the cleaning agent and the sterilizing agent from being dissolved too early. Meanwhile, when the cleaning module cleans the reverse osmosis membrane filter cartridge, the first one-way valve on the sterilizing pipeline can prevent the liquid in the manifold from flowing backward to the sterilizing agent storage member, thereby preventing the sterilizing agent from being dissolved too early. When the sterilizing module sterilizes the reverse osmosis membrane filter cartridge, the first one-way valve on the cleaning pipeline can prevent the liquid in the manifold from flowing backward to the cleaning agent storage member, thereby preventing the cleaning agent from being dissolved too early, which helps to improve the storage duration of the cleaning agent and the sterilizing agent, and avoids affecting the subsequent cleaning effect or sterilizing effect. By arranging the second one-way valve, the water pressure in the water inlet main line can be resisted, thereby preventing the circulating pump from leaking due to excessively high water pressure, and further improving the user experience.

[0020] Further, by arranging the cleaning agent storage member and / or the sterilizing agent storage member to have a containing cavity, when the reverse osmosis membrane filter core is not cleaned or sterilized, the cleaning agent can be stored in the cleaning agent storage member, and the sterilizing agent can be stored in the sterilizing agent storage member, when the reverse osmosis membrane filter core is cleaned or sterilized, the impurities in the circulating loop are collected into the containing cavity, thereby avoiding the dirt in the circulating loop from entering the reverse osmosis membrane filter core again to cause secondary pollution to the reverse osmosis membrane filter core, and meanwhile, the undissolved or caked cleaning agent or sterilizing agent can be avoided from entering the reverse osmosis membrane filter core, thereby avoiding the undissolved or caked cleaning agent or sterilizing agent from piercing the membrane sheet, and further improving the user's experience.

[0021] Further, by arranging the auxiliary cleaning member, the cleaning liquid can be more conducive to physical or chemical action with the dirt on the reverse osmosis membrane filter core, thereby being more conducive to removing the dirt from the reverse osmosis membrane filter core, further improving the cleaning efficiency and cleaning effect of the reverse osmosis membrane filter core, and further improving the user's experience. BRIEF DESCRIPTION OF DRAWINGS

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

[0023] Figure 1 is a structural schematic view of an embodiment one of the water purification equipment of the present application;

[0024] Figure 2 is a structural schematic view of an embodiment two of the water purification equipment of the present application;

[0025] Figure 3 is a structural schematic view of an embodiment three of the water purification equipment of the present application;

[0026] Figure 4 is a structural schematic view of an embodiment four of the water purification equipment of the present application;

[0027] Figure 5 is a structural schematic view of an embodiment five of the water purification equipment of the present application;

[0028] Figure 6 is a structural schematic view of an embodiment six of the water purification equipment of the present application;

[0029] Figure 7 is a structural schematic view of one of the cleaning agent storage members of the present application;

[0030] Figure 8 is a structural schematic view of one of the cleaning agent storage members of the present application;

[0031] Figure 9is another structure schematic view of another case of another embodiment of the cleaning agent storage component of the utility model;

[0032] Figure 10 is another structure schematic view of still another case of another embodiment of the cleaning agent storage component of the utility model;

[0033] Figure 11 is a flow chart of the control method for the water purification equipment of the utility model;

[0034] Figure 12 is a flow chart of the embodiment of the control method for the water purification equipment of the utility model.

[0035] List of reference signs:

[0036] 1, water inlet main road;11, water inlet valve;12, booster pump;2, reverse osmosis membrane filter core;21, waste water outlet pipe;211, waste water valve;22, drain pipe;221, drain valve;23, backflow pipe;231, backflow valve;301, cleaning inlet;302, cleaning outlet;311, first cleaning pipe;312, first cleaning valve;313, first cleaning agent storage component;314, first check valve;321, second cleaning pipe;322, second cleaning valve;323, second cleaning agent storage component;324, second check valve;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 component;3308, warehouse door;3309, drop port;331, sterilization pipeline;332, sterilization valve;333, sterilization agent storage component;35, confluence pipe;36, shunt pipe;361, shunt valve;4, pre-filter unit;5, pure water outlet pipe;51, pure water component;52, water quality detection component;61, circulation pipe;62, circulating pump;63, turbidity sensor. DETAILED DESCRIPTION

[0037] 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.

[0038] 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 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 specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In addition, it should be noted that in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection" 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.

[0040] As shown in Figures 1 to 6 The water purification equipment of the utility model includes a reverse osmosis membrane filter core 2, a cleaning assembly and a circulating pipe 61, the cleaning assembly has a cleaning outlet 302, a cleaning module and a sterilization module arranged in parallel, the cleaning outlet 302 is communicated with the water inlet end of the reverse osmosis membrane filter core 2, the cleaning module can deliver cleaning liquid to the reverse osmosis membrane filter core 2, and the sterilization module can deliver sterilization liquid into the reverse osmosis membrane filter core 2.

[0041] The first end of the circulating pipe 61 is communicated with the wastewater end of the reverse osmosis membrane filter core 2, and the second end of the circulating pipe 61 can be communicated with the cleaning module and / or the sterilization module, so that the cleaning module and / or the sterilization module, 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 sequentially communicated to form a circulating loop, and the water purification equipment is arranged to drive the cleaning liquid and / or the sterilization liquid to circulate in the circulating loop.

[0042] Through such an arrangement, that is, by sequentially communicating the cleaning module and / or the sterilization module, the water inlet end of the reverse osmosis membrane filter core 2 and the wastewater end of the reverse osmosis membrane filter core 2 to form a circulating loop, the sterilization liquid can be circulated in the circulating loop, so that the sterilization liquid sterilizes the reverse osmosis membrane filter core 2 after cleaning, avoids affecting the user's drinking water health due to bacterial growth in the reverse osmosis membrane filter core 2, and greatly improves the user's use experience.

[0043] It should be noted that in actual application, the utility model does not make any limitation on the specific communication mode of the second end of the circulating pipe 61 and the cleaning module and / or the sterilization module, as long as the cleaning module and / or the sterilization module can form a circulating loop with the water inlet end of the reverse osmosis membrane filter core 2 and the wastewater end of the reverse osmosis membrane filter core 2.

[0044] In one specific embodiment, the second end of the circulation pipe 61 can be communicated with only the sterilization module, so that the sterilization module, the water inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 are communicated to form a circulation loop. After the cleaning liquid cleans the reverse osmosis membrane filter element 2, the sterilization liquid is circulated in the circulation loop, so as to effectively sterilize the reverse osmosis membrane filter element 2.

[0045] In another specific embodiment, the second end of the circulation pipe 61 can be communicated with only the cleaning module, so that the cleaning module, the water inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 are communicated to form a circulation loop. The cleaning liquid is circulated in the cleaning loop to clean the reverse osmosis membrane filter element 2. After cleaning, the sterilization liquid is delivered into the reverse osmosis membrane filter element 2, and the sterilization liquid is circulated in the circulation loop to sterilize the reverse osmosis membrane filter element 2.

[0046] In another possible embodiment, the second end of the circulation pipe 61 is communicated with the cleaning module and the sterilization module, so that the cleaning module and the sterilization module can be communicated with the water inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 to form a circulation loop. On the one hand, when the cleaning module cleans the reverse osmosis membrane filter element 2, the cleaning liquid can be circulated in the circulation loop, so that the cleaning liquid can be repeatedly flushed to the reverse osmosis membrane filter element 2, thereby improving the cleaning effect of the reverse osmosis membrane filter element 2. On the other hand, when the sterilization module sterilizes the reverse osmosis membrane filter element 2, the sterilization liquid can be circulated in the circulation loop, so that the sterilization liquid can be repeatedly sterilized to the reverse osmosis membrane filter element 2, thereby effectively sterilizing the reverse osmosis membrane filter element 2, and greatly improving the user experience.

[0047] Preferably, the second end of the circulation pipe 61 is communicated with the cleaning module and the sterilization module, so that the cleaning module and the sterilization module can be communicated with the water inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 to form a circulation loop.

[0048] It should be noted that in actual application, the reverse osmosis membrane filter element 2 can be first cleaned by the cleaning module, and after the dirt attached to the reverse osmosis membrane filter element 2 is removed, the reverse osmosis membrane filter element 2 can be sterilized by the sterilization module, so that the reverse osmosis membrane filter element 2 after cleaning can be completely sterilized, which is helpful for the regeneration of the reverse osmosis membrane filter element 2. Alternatively, the reverse osmosis membrane filter element 2 can be sterilized by the sterilization module at regular intervals, and the like. Such flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0049] It also needs to be explained that in actual application, the specific driving mode of the utility model for driving the cleaning liquid and / or the sterilization liquid to circulate in the circulation loop is not limited in any way, for example, a circulating pump 62 can be arranged on the circulation loop to drive the cleaning liquid to circulate in the circulation loop, or a booster pump 12 on the water inlet main line 1 between the cleaning agent storage member and the reverse osmosis membrane filter core 2 can also be used to drive the cleaning liquid and the sterilization liquid to circulate in the cleaning loop, or one of the cleaning liquid and the sterilization liquid can be arranged to be driven by the circulating pump 62 arranged on the circulation loop, and the other of the cleaning liquid and the sterilization liquid can be arranged to be driven by the booster pump 12 between the cleaning agent storage member and the reverse osmosis membrane filter core 2, and the like. Such adjustment and change of the specific driving mode of the utility model for driving the cleaning liquid to circulate in the circulation loop does not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0050] Preferably, as shown in Figures 1 to 6 The water purification equipment further comprises a water inlet main line 1 in communication with the water inlet end of the reverse osmosis membrane filter core 2, the cleaning assembly has a cleaning outlet 302, and the water purification equipment further comprises a booster pump 12 and a circulating pump 62. The booster pump 12 is arranged on the water inlet main line 1 and located at the upstream end of the cleaning outlet 302, and the circulating pump 62 is arranged on the circulation loop and used to drive the cleaning liquid and / or the sterilization liquid to circulate in the circulation loop.

[0051] By arranging the booster pump 12 at the upstream end of the cleaning outlet 302, the cleaning liquid or the sterilization liquid can be prevented from flowing through the booster pump 12, the cleaning liquid or the sterilization liquid can be prevented from damaging the diaphragm in the booster pump 12, and the service life of the booster pump 12 can be prevented from being affected. By arranging the circulating pump 62 to drive the cleaning liquid or the sterilization liquid to circulate in the circulation loop, the booster pump 12 can be prevented from being used to drive the cleaning liquid or the sterilization liquid to circulate in the circulation loop, the cleaning liquid or the sterilization liquid can be prevented from damaging the diaphragm in the booster pump 12, the service life of the booster pump 12 can be improved, and the user experience can be further improved.

[0052] It should be noted that, in practical applications, those skilled in the art can configure the cleaning module with a cleaning agent storage component and the sterilization module with a sterilization agent storage component 333. The cleaning component also has a cleaning outlet 302, directly storing a large amount of cleaning solution in the cleaning agent storage component and a large amount of sterilization solution in the sterilization agent storage component 333. During cleaning or sterilization, the cleaning solution or sterilization solution flows into the reverse osmosis membrane filter element 2 through the cleaning outlet 302. Alternatively, the cleaning module can be configured with a cleaning agent storage component and the sterilization module can be configured with a sterilization agent storage component 333, with the cleaning agent and sterilization solution stored in the cleaning agent storage component and the sterilization solution stored in the sterilization agent storage component 333. The cleaning component has a cleaning inlet 301 and a cleaning outlet 302. The cleaning inlet 301 is connected to the main water inlet 1, and the water in the main water inlet 1 enters the cleaning agent storage component through the cleaning inlet 301 to dissolve the cleaning solution. The cleaning module dissolves the cleaning agent in the disinfectant storage component 333 through the cleaning inlet 301 to form a cleaning solution. During cleaning or sterilization, the cleaning solution or disinfectant flows into the reverse osmosis membrane filter element 2 through the cleaning outlet 302. Alternatively, the cleaning module can be configured with a cleaning agent storage component, and the sterilization module can be configured with a disinfectant storage component 333. The cleaning agent and disinfectant are stored in the cleaning agent storage component 333. The cleaning component has a cleaning inlet 301 and a cleaning outlet 302. The user directly injects water into the cleaning inlet 301 to dissolve the cleaning agent or disinfectant to form a cleaning solution or disinfectant. During cleaning or sterilization, the cleaning solution or disinfectant flows into the reverse osmosis membrane filter element 2 through the cleaning outlet 302, 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.

[0053] Preferably, such as Figures 1 to 6 As shown, the water purification device of this utility model also includes a cleaning inlet 301, which is connected to the main water inlet 1 so that water in the main water inlet 1 can enter the cleaning agent storage component and / or the bactericide storage component 333 through the cleaning inlet 301.

[0054] With this configuration, compared to setting the cleaning component to have only a cleaning outlet 302, setting the cleaning component to have both a cleaning inlet 301 and a cleaning outlet 302 avoids storing large amounts of cleaning or disinfecting liquid in the cleaning agent storage component or disinfecting agent storage component 333. This results in a smaller size for the cleaning agent storage component and disinfecting agent storage component 333, thereby saving installation space for the water purification equipment and further improving the user experience.

[0055] It should be noted that in actual application, the specific communication position of the cleaning inlet 301 and the water inlet main path 1 is not limited in the utility model, as long as the water in the water inlet main path 1 can enter into the cleaning agent storage member and the bactericide storage member 333 through the cleaning inlet 301.

[0056] Preferably, as shown in the drawings, 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 in communication with the water inlet main path 1, and the cleaning inlet 301 is located at the downstream end of the pre-filtering unit 4. Figures 1 to 6

[0057] Through such a setting, that is, by setting the cleaning inlet 301 to be located at the downstream end of the pre-filtering unit 4, the purified water filtered through the pre-filtering unit 4 can enter into the cleaning agent storage member 33 through the cleaning inlet 301, and the cleaning agent and / or the bactericide are dissolved by the purified water filtered through the pre-filtering unit 4, so that the solubility and the cleanliness of the cleaning agent and / or the bactericide are improved, thereby effectively improving the cleaning effect and the sterilization effect of the reverse osmosis membrane filter core 2.

[0058] It should be noted that in actual application, the pre-filtering unit 4 can be set as a pre-filtering filter core by those skilled in the art, or the pre-filtering unit 4 can also be set as a composite filter core comprising a pre-filtering filter core and a post-filtering filter core, and the like, and such adjustment and change of the specific type of the pre-filtering unit 4 does not deviate from the principles and ranges of the utility model, and should be included in the protection range of the utility model.

[0059] Preferably, the pre-filtering unit 4 is a pre-filtering filter core.

[0060] It should be noted that in actual application, the circulation pump 62 can be arranged on the circulation pipe 61 by those skilled in the art, or the circulation pump 62 can also be arranged on the water inlet main path 1 between the cleaning outlet 302 and the reverse osmosis membrane filter core 2, or the circulation pump 62 can also be arranged on the cleaning pipe and the bactericide pipe 331, and the like, and such adjustment and change of the specific arrangement position of the circulation pump 62 does not deviate from the principles and ranges of the utility model, and should be included in the protection range of the utility model.

[0061] Preferably, as shown in the drawings, 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 in communication with the water inlet main path 1, and the cleaning inlet 301 is located at the downstream end of the pre-filtering unit 4. Figures 1 to 6 ​As shown, the cleaning assembly comprises a confluence pipe 35, a cleaning module and a sterilization module arranged in parallel, the cleaning module comprises a cleaning pipeline, a cleaning valve and a cleaning agent storage member arranged on the cleaning pipeline, the sterilization module comprises a sterilization pipeline 331, a sterilization valve and a sterilization agent storage member 333 arranged on the sterilization pipeline 331, the first end of the cleaning pipeline and the first end of the sterilization pipeline 331 are confluenced and communicated with the cleaning inlet 301, the second end of the cleaning pipeline and the second end of the sterilization pipeline 331 are confluenced and communicated with the confluence pipe 35, the end of the confluence pipe 35 forms the cleaning outlet 302, and the circulating pump 62 is arranged on the confluence pipe 35.

[0062] The cleaning agent storage member, 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 sequentially communicated to form a cleaning loop, the sterilization agent storage member 333, 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 sequentially communicated to form a sterilization loop, and the circulating pump 62 can drive the cleaning liquid to circulate in the cleaning loop and can drive the sterilization liquid to circulate in the sterilization loop.

[0063] Through such an arrangement, the circulating pump 62 can be arranged on the confluence pipe 35 to drive the cleaning liquid to circulate in the cleaning loop to clean the reverse osmosis membrane filter core 2 and to drive the sterilization liquid to circulate in the sterilization loop to sterilize the reverse osmosis membrane filter core 2, compared with the form of arranging the circulating pump 62 on the cleaning pipeline or the sterilization pipeline 331, the number of circulating pumps 62 can be saved by arranging the circulating pump 62 on the confluence pipe 35, and the cost of the water purification equipment is further reduced.

[0064] It should be noted that in actual application, the number of cleaning pipelines can be set to one, or the number of cleaning pipelines can also be set to two, the two cleaning pipelines are arranged in parallel, the cleaning valve and the cleaning agent storage member are arranged one by one corresponding to the cleaning pipeline, or the number of cleaning pipelines can also be set to multiple, the multiple cleaning pipelines are arranged in parallel, the cleaning valve and the cleaning agent storage member are arranged one by one corresponding to the cleaning pipeline, and the like, and the adjustment and change of the specific number of cleaning pipelines do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0065] Exemplarily, as shown in Figure 1 , Figure 3 and Figure 5 , the cleaning pipeline only comprises a first cleaning pipeline 311, and the first cleaning pipeline 311 is provided with a first cleaning valve 312 and a first cleaning agent storage member 313.

[0066] Preferably, the number of cleaning pipelines is at least two, and the multiple cleaning pipelines are arranged in parallel, and the cleaning valve and the cleaning agent storage member are arranged one by one corresponding to the cleaning pipeline.

[0067] Through the arrangement, the cleaning assembly can clean the reverse osmosis membrane filter core 2 by using different types of cleaning agents, so that the appropriate cleaning agent can be selected according to the type of dirt on the reverse osmosis membrane filter core 2, and the cleaning effect of the reverse osmosis membrane filter core 2 is improved.

[0068] Exemplarily, as shown in Figure 2 , Figure 4 and Figure 6 , the cleaning module comprises a first cleaning pipe 311, a second cleaning pipe 321, a first cleaning valve 312 and a first cleaning agent storage member 313 arranged on the first cleaning pipe 311, and a second cleaning valve 322 and a second cleaning agent storage member 323 arranged on the second cleaning pipe 321, wherein the first cleaning agent storage member 313 is used for storing an acidic cleaning agent, and the second cleaning agent storage member 323 is used for storing an alkaline cleaning agent.

[0069] It should be noted that the specific type of the acidic cleaning agent is not limited in the utility model, 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 solution, and a person skilled in the art can adjust it according to actual needs.

[0070] Preferably, the acidic cleaning agent is malic acid or citric acid, which has good disinfection and bacteriostasis effect while cleaning dirt, and can disinfect and bacteriostasis the reverse osmosis membrane filter core 2.

[0071] It should be noted that the specific type of the alkaline cleaning agent is not limited in the utility model, for example, the alkaline cleaning agent can be 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 second cleaning liquid can also be other types of alkaline solution, and a person skilled in the art can adjust it according to actual needs.

[0072] Specifically, when the reverse osmosis membrane filter core 2 is cleaned, the first cleaning valve 312 (or the second cleaning valve 322) is opened, water in the water inlet main circuit 1 enters the cleaning agent storage member 33 through the cleaning inlet 301, the cleaning agent in the first cleaning agent storage member 313 (or the second cleaning agent storage member 323) is dissolved to form a cleaning liquid, and then the cleaning liquid is delivered to the reverse osmosis membrane filter core 2 through the cleaning outlet 302, so that the reverse osmosis membrane filter core 2 is soaked to make the cleaning liquid act on the dirt on the reverse osmosis membrane filter core 2, and then the circulating pump 62 drives the cleaning liquid to flow in the cleaning circuit, so that the reverse osmosis membrane filter core 2 is cleaned by multiple times of circulation flushing, and the dirt on the reverse osmosis membrane filter core 2 is cleaned.

[0073] 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.

[0074] It should also be noted that, in practical applications, those skilled in the art can set the number of sterilization pipelines 331 to one, or the number of sterilization pipelines 331 to two, with the two sterilization pipelines 331 connected in parallel, and the sterilization valve and the bactericide storage component 333 each corresponding to one sterilization pipeline 331. Alternatively, the number of sterilization pipelines 331 can be set to multiple, with multiple sterilization pipelines 331 connected in parallel, and the sterilization valve and the bactericide storage component 333 each corresponding to one sterilization pipeline 331, etc. Such adjustments and changes to the specific number of sterilization pipelines 331 do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0075] Preferably, there are at least two sterilization pipelines 331, and multiple sterilization pipelines 331 are arranged in parallel. The sterilization valve and the sterilizing agent storage component 333 are arranged in a one-to-one correspondence with the sterilization pipelines 331.

[0076] This setup allows the sterilization component to use different types of sterilizing agents to clean the reverse osmosis membrane filter element 2, thereby improving the sterilization effect on the reverse osmosis membrane filter element 2.

[0077] It should be noted that this utility model does not limit the specific type of bactericide. For example, the bactericide can be at least one of hydrogen peroxide, peracetic acid, copper sulfate, formaldehyde, sodium bisulfite, and sodium hypochlorite, etc. Such adjustments and changes to the specific type of bactericide do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0078] Preferably, the bactericide includes at least one of hydrogen peroxide, peracetic acid, copper sulfate, formaldehyde, sodium bisulfite, and sodium hypochlorite.

[0079] Preferably, such as Figures 1 to 6 As shown, the cleaning assembly also includes a first check valve 314 disposed on the cleaning line and / or sterilization line 331. The first check valve 314 is disposed between the cleaning outlet 302 and the cleaning agent storage component and / or sterilization agent storage component 333 and can prevent water downstream of the cleaning agent storage component and / or sterilization agent storage component 333 from flowing back into the cleaning agent storage component and / or sterilization agent storage component 333.

[0080] By setting the first one-way valve 314, when the water purification equipment is in the normal water production mode, the water in the water inlet main line 1 can be prevented from flowing back to the cleaning agent storage member and / or the bactericide storage member 333 through the cleaning outlet 302, so as to prevent the cleaning agent and the bactericide from being dissolved too early. At the same time, when the cleaning module cleans the reverse osmosis membrane filter core 2, the first one-way valve 314 on the bactericide pipeline 331 can also prevent the liquid in the manifold 35 from flowing back to the bactericide storage member 333, so as to prevent the bactericide from being dissolved too early. When the bactericide module sterilizes the reverse osmosis membrane filter core 2, the first one-way valve 314 on the cleaning pipeline can also prevent the liquid in the manifold 35 from flowing back to the cleaning agent storage member, so as to prevent the cleaning agent from being dissolved too early. This helps to prolong the storage time of the cleaning agent and the bactericide, and avoids affecting the subsequent cleaning effect or sterilization effect.

[0081] It should be noted that it is not limited to setting the first one-way valve 314 to prevent the water at the downstream end of the cleaning agent storage member and / or the bactericide storage member 333 from flowing back to the cleaning agent storage member and / or the bactericide storage member 333. For example, the cleaning agent storage member and / or the bactericide storage member 333 can also be provided with a non-return structure to prevent the water at the downstream end of the cleaning agent storage member and / or the bactericide storage member 333 from flowing back to the cleaning agent storage member and / or the bactericide storage member 333. 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. Of course, preferably, the first one-way valve 314 is set to prevent the water at the downstream end of the cleaning agent storage member and / or the bactericide storage member 333 from flowing back to the cleaning agent storage member and / or the bactericide storage member 333.

[0082] Preferably, as shown in Figures 1 to 6 The cleaning assembly of the present application further comprises a second one-way valve 324, which is arranged between the cleaning outlet 302 and the circulating pump 62, and is arranged to be able to resist the water pressure in the water inlet main line 1.

[0083] By such an arrangement, in order to reduce costs and increase efficiency, a circulating pump 62 with lower cost is usually selected, and the circulating pump 62 with lower cost is usually not resistant to high pressure. When the water purification equipment is in the normal water production mode, the water pressure in the water inlet main line 1 is high. By arranging the second one-way valve 324, the water pressure in the water inlet main line 1 can be resisted, and the problem of water leakage of the circulating pump 62 caused by too high water pressure can be avoided, thereby further improving the user experience.

[0084] Preferably, the water purification device further comprises a shunt pipe 36, a first end of the shunt pipe 36 forms the cleaning inlet 301, one end of the cleaning pipe and the sterilization pipe 331 meet and communicate with a second end of the shunt pipe 36, and a shunt valve 361 is arranged on the shunt pipe 36, so that when the cleaning liquid or the sterilization liquid circulates in the circulation loop, the cleaning liquid or the sterilization liquid can be prevented from flowing back to the water inlet main pipe 1 through the cleaning inlet 301.

[0085] Preferably, as shown in the drawings, the water purification device further comprises a pure water outlet pipe 5 and a pure water water member 51, and the pure water end of the reverse osmosis membrane filter core 2 communicates with the pure water water member 51 through the pure water outlet pipe 5. Figures 1 to 6

[0086] It should be noted that in actual application, the pure water water member 51 can be directly arranged as a water outlet member (such as a faucet or a water outlet nozzle), the filtered pure water flows out of the faucet or the water outlet nozzle for use by the user, or the pure water water member 51 can be arranged as a post-filter core, the filtered pure water flows into the post-filter core to improve the taste for use by the user, or the pure water water member 51 can be arranged as a pure water tank, the filtered pure water after the reverse osmosis membrane filter core 2 flows into the pure water tank for storage for use by the user, and the like, and adjustment and change of the specific arrangement type of the pure water water member 51 do 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 pure water water member 51 is a post-filter core.

[0088] Preferably, the cleaning agent storage member and / or the sterilization agent storage member 333 has a cavity, and is arranged to store the cleaning agent and / or the sterilization agent when it is in the first working state and to collect the impurities in the circulation loop into the cavity when it is in the second working state.

[0089] Through such an arrangement, when the reverse osmosis membrane filter core 2 is not cleaned or sterilized, the cleaning agent can be stored in the cleaning agent storage member and the sterilization agent can be stored in the sterilization agent storage member 333, when the reverse osmosis membrane filter core 2 is cleaned or sterilized, the impurities in the circulation loop are collected into the cavity, so that the dirt in the circulation loop can be prevented from entering the reverse osmosis membrane filter core 2 again to cause secondary pollution to the reverse osmosis membrane filter core 2, and at the same time, the undissolved or caked cleaning agent or sterilization agent can be prevented from entering the reverse osmosis membrane filter core 2, so that the undissolved or caked cleaning agent or sterilization agent can be prevented from piercing the membrane, and the user's use experience can be further improved.

[0090] ​It should be noted that the first working state is the working state in which the reverse osmosis membrane filter element 2 is not cleaned, for example, it can be the normal water production mode or the flushing mode. The second working state is the working state in which the reverse osmosis membrane filter element 2 is cleaned or sterilized.

[0091] The following is an example of a cleaning agent storage component.

[0092] The cleaning agent storage component of this invention can store cleaning agent in the cleaning agent storage component when the reverse osmosis membrane filter element 2 is not cleaned. When the reverse osmosis membrane filter element 2 needs to be cleaned, the cleaning agent stored in the cleaning agent storage component dissolves, thereby using the space originally used to store cleaning agent to collect impurities. This makes full use of the space of the cleaning agent storage component, helps to reduce the size of the water purification equipment, and greatly improves the user experience.

[0093] The cleaning agent storage component of this utility model is described below with reference to the following two embodiments.

[0094] Example 1:

[0095] like Figure 7 As shown, the cleaning agent storage component 33 of this utility model includes a storage box 3301 and a filter component 3307. The storage box 3301 has a liquid inlet 3303 and a liquid outlet 3304. The filter component 3307 is disposed at the liquid outlet 3304. A cavity 3302 is formed inside the storage box 3301. When the cleaning agent storage component 33 is in the first working state, the cleaning agent can be stored in the cavity 3302. When the cleaning agent storage component 33 is in the second working state, the filter component 3307 can collect solids in the cleaning circuit into the cavity 3302.

[0096] Preferably, the storage box 3301 is provided with a drain outlet, which is connected to the cavity 3302. The cleaning agent storage component 33 also includes a door 3308, which is located at the drain outlet and can open or close the drain outlet.

[0097] By setting up a drain outlet and a chamber door 3308, after cleaning the reverse osmosis membrane filter element 2, it is easy to open the chamber door 3308 and clean out the dirt collected in the second chamber 33022 through the drain outlet, avoiding the growth of bacteria and further improving the user experience.

[0098] Preferably, the storage box 3301 is also provided with a dispensing port 3309, which is connected to the cavity 3302 so that the user can dispense cleaning agent into the cavity 3302 through the dispensing port 3309.

[0099] By setting the pouring port 3309, when the cleaning agent is insufficient, the user can pour the cleaning agent into the cavity 3302 through the pouring port 3309, avoiding the influence of the cleaning of the reverse osmosis membrane filter element 2 due to insufficient cleaning agent, and further improving the user's experience.

[0100] Embodiment 2:

[0101] As Figures 8 to 10 shown, the cleaning agent storage member 33 includes a storage box 3301 and a filter member 3307, and a cavity 3302 is formed in the storage box 3301, wherein the filter member 3307 is arranged in the storage box 3301 and separates the cavity 3302 into a first chamber 33021 and a second chamber 33022, when the cleaning agent storage member 33 is in a first working state, the cleaning agent can be stored in the first chamber 33021 and / or the second chamber 33022, and when the cleaning agent storage member 33 is in a second working state, the filter member 3307 can collect solids in the cleaning circuit into the second chamber 33022.

[0102] It should be noted that although the above two embodiments can both store cleaning agents and collect impurities in the cleaning circuit, compared with the form of arranging the filter member 3307 at the liquid outlet 3304, arranging the filter member 3307 in the storage box 3301 and separating the cavity 3302 into the first chamber 33021 and the second chamber 33022, on the one hand, the area of the filter member 3307 can be larger, improving the filtering efficiency and avoiding blockage due to the small area of the filter member 3307, on the other hand, the impurities in the cleaning circuit can be collected only in the second chamber 33022, thereby avoiding collecting the impurities in the entire cavity 3302, and further helping to clean the impurities from the cleaning agent storage member 33, and further improving the user's experience.

[0103] It should be noted that although the above two embodiments are used to introduce the cleaning agent storage member 33 of the utility model, this is not limiting, and the cleaning agent storage member 33 can be arranged in any other possible form, etc., and the adjustment and change of the specific arrangement form of the cleaning agent storage member 33 do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0104] The following will take Embodiment 2 as an example and introduce the cleaning agent storage member 33 of the utility model in combination with Figures 8 to 10

[0105] ​It should be noted that in actual application, the specific setting position and setting direction of the filter member 3307 in the cleaning agent storage member 33 are not limited in the utility model, as long as the solid in the cleaning circuit can be collected into the second chamber 3302.

[0106] In one embodiment, as shown in FIG. 1, the storage box 3301 has a liquid inlet 3303 and a liquid outlet 3304, the liquid inlet 3303 and the liquid outlet 3304 are respectively located at two sides of the filter member 3307, the liquid inlet 3303 is in communication with the second chamber 3302, and the liquid outlet 3304 is in communication with the first chamber 3301. Figure 8

[0107] When the dirt washed off enters the second chamber 3302 along with the cleaning liquid through the liquid inlet 3303, the cleaning liquid can flow into the first chamber 3301 through the filter member 3307 and flow out from the liquid outlet 3304, and the dirt (impurities) is intercepted by the filter member 3307 and collected into the second chamber 3302.

[0108] In another embodiment, as shown in FIG. 2, the storage box 3301 has a liquid inlet pipe 3305 and a liquid outlet 3304, the end of the liquid inlet pipe 3305 forms the liquid inlet 3303, the liquid inlet 3303 is located at the side of the filter member 3307 close to the liquid outlet 3304, the liquid inlet pipe 3305 extends into the second chamber 3302, and the liquid outlet 3304 is in communication with the first chamber 3301. Figure 9 When the dirt washed off enters the second chamber 3302 along with the cleaning liquid through the liquid inlet pipe 3305, the cleaning liquid can flow into the first chamber 3301 through the filter member 3307 and flow out from the liquid outlet 3304, and the dirt (impurities) is intercepted by the filter member 3307 and collected into the second chamber 3302.

[0109] In another embodiment, as shown in FIG. 3, the storage box 3301 has a liquid inlet 3303 and a liquid outlet pipe 3306, the liquid inlet 3303 is in communication with the second chamber 3302, the end of the liquid outlet pipe 3306 forms the liquid outlet 3304, the liquid outlet 3304 is located at the side of the filter member 3307 close to the liquid inlet 3303, and the liquid outlet pipe 3306 extends into the first chamber 3301.

[0110] Figure 10 When the dirt washed off enters the second chamber 3302 along with the cleaning liquid through the liquid inlet 3303, the cleaning liquid can flow into the first chamber 3301 through the filter member 3307 and flow out through the liquid outlet pipe 3306, and the dirt (impurities) is intercepted by the filter member 3307 and collected into the second chamber 3302.

[0111]

[0112] ​​​It should be noted that in actual application, when the cleaning agent storage member 33 is in the first working state, the cleaning agent can be stored only in the first chamber 33021, or the cleaning agent can be stored in the second chamber 33022, or the cleaning agent can be stored in the first chamber 33021 and the second chamber 33022. Such flexible adjustment and change do not deviate from the principles and scope of the present application and should be included in the protection scope of the present application.

[0113] Preferably, the cleaning agent is stored in the first chamber 33021 and the second chamber 33022.

[0114] By such a setting, compared with the form of storing the cleaning agent storage member 33 only in the first chamber 33021 or the second chamber 33022, storing the cleaning agent storage member 33 in the first chamber 33021 and the second chamber 33022 can more fully utilize the space in the cleaning agent storage member 33, so that the volume of the cleaning agent storage member 33 can be smaller, and the user's use experience is better.

[0115] Preferably, as shown in Figures 8 to 10 The storage box 3301 is provided with a sewage outlet, the sewage outlet is communicated with the second chamber 33022, and the cleaning agent storage member 33 further comprises a door 3308, which is arranged at the sewage outlet and can open or close the sewage outlet.

[0116] By setting the sewage outlet and the door 3308, after cleaning the reverse osmosis membrane filter core 2, the door 3308 can be easily opened, and the dirt collected in the second chamber 33022 can be cleaned out through the sewage outlet, so that bacteria are avoided, and the user's use experience is further improved.

[0117] It should be noted that although the present application is introduced by taking the cleaning agent storage member as an example, this is not limiting, and the structure of the cleaning agent storage member is also applicable to the bactericide storage member 333.

[0118] Preferably, the water purification equipment of the present application further comprises an auxiliary cleaning member (not shown in the figure), which is arranged to promote the action of the cleaning liquid on the dirt on the reverse osmosis membrane filter core 2 so as to remove the dirt from the reverse osmosis membrane filter core 2.

[0119] By setting the auxiliary cleaning member, the physical or chemical action of the cleaning liquid on the dirt on the reverse osmosis membrane filter core 2 can be more facilitated, so that the dirt on the reverse osmosis membrane filter core 2 can be more facilitated to be removed, the cleaning efficiency and cleaning effect of the reverse osmosis membrane filter core 2 are further improved, and the user's use experience is further improved.

[0120] It should be noted that in actual application, the specific setting type of the auxiliary cleaning member is not limited in the utility model, as long as the cleaning liquid can promote the action of the dirt on the reverse osmosis membrane filter element 2 to remove the dirt from the reverse osmosis membrane filter element 2.

[0121] In one specific embodiment, the auxiliary cleaning member comprises a heating module, wherein the heating module is used for heating the cleaning liquid.

[0122] Through such a setting, the hot cleaning liquid is delivered into the reverse osmosis membrane filter element 2, which can promote the action of the cleaning liquid and the dirt on the reverse osmosis membrane filter element 2 to facilitate the removal of the dirt; in addition, by setting the heating module, the dissolution of the cleaning agent can also be facilitated, thereby improving the dissolution speed and solubility of the cleaning agent and further improving the user's experience.

[0123] It should be noted that the specific setting position of the heating module is not limited in the utility model, for example, the heating module can be arranged on the cleaning pipeline 31, or the heating module can also be arranged on the circulating pipeline 61, or the heating module can also be arranged outside the cleaning agent storage member 33, and the like, and such flexible adjustment and change do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0124] In another specific embodiment, the auxiliary cleaning member comprises an ultrasonic module, wherein the ultrasonic module is arranged outside the reverse osmosis membrane filter element 2 and can cause high-frequency low-amplitude vibration of the reverse osmosis membrane filter element 2, which facilitates the removal of the dirt on the reverse osmosis membrane filter element 2.

[0125] In another specific embodiment, the auxiliary cleaning member comprises a bubble generator, wherein the bubble generator can generate bubbles, and the bubbles can promote the action of the cleaning liquid and the dirt on the reverse osmosis membrane filter element 2 to facilitate the removal of the dirt.

[0126] Preferably, as shown in Figures 1 to 6 The water purification equipment further comprises a water inlet valve 11 arranged on the water inlet main line 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.

[0127] Through such a setting, when the reverse osmosis membrane filter element 2 needs to be cleaned, the water in the water inlet main line 1 can be prevented from directly entering the reverse osmosis membrane filter element 2 by operating the water inlet valve 11, thereby avoiding diluting the cleaning liquid entering the reverse osmosis membrane filter element 2.

[0128] It should be noted that in actual application, the cleaning inlet 301 is not limited to be arranged at the upstream end of the water inlet valve 11, and the cleaning outlet 302 is not limited to be arranged at the downstream end of the water inlet valve 11. For example, the cleaning inlet 301 and the cleaning outlet 302 can both be arranged at the upstream end of the water inlet valve 11, or the cleaning inlet 301 and the cleaning outlet 302 can both be arranged at the downstream end of the water inlet valve 11. Such adjustment and change of the relative positions of the cleaning assembly and the water inlet valve 11 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 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.

[0129] It should be further noted that in actual application, the booster pump 12 can be arranged at the upstream end of the water inlet valve 11, or the booster pump 12 can be arranged at the downstream end of the water inlet valve 11. Such adjustment and change of the specific arrangement positions of the booster pump 12 and the water inlet valve 11 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0130] Preferably, as shown in FIG. 1, the booster pump 12 is arranged at the upstream end of the water inlet valve 11, and the cleaning inlet 301 is arranged between the booster pump 12 and the water inlet valve 11. Figures 1 to 6

[0131] By arranging the booster pump 12 at the upstream end of the water inlet valve 11 and arranging the cleaning inlet 301 between the booster pump 12 and the water inlet valve 11, the cleaning inlet 301 can be arranged 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 to the reverse osmosis membrane filter element 2 through the booster pump 12, thereby improving the cleaning efficiency and cleaning effect.

[0132] In a second aspect, the present application further provides a control method for a water purification device, wherein the water purification device is any one of the water purification devices described above.

[0133] As shown in FIG. 2, the control method of the present application comprises the following steps: Figure 11

[0134] S1: making the cleaning module deliver cleaning liquid to the reverse osmosis membrane filter element 2;

[0135] S2: making the cleaning liquid circulate in the circulation loop to clean the reverse osmosis membrane filter element 2;

[0136] S3: making the sterilization module deliver sterilization liquid to the reverse osmosis membrane filter element 2;

[0137] S4: making the sterilization liquid circulate in the circulation loop to sterilize the reverse osmosis membrane filter element 2.​​

[0138] Through the arrangement, the cleaning module can be used to clean the reverse osmosis membrane filter element 2 first, so that dirt falls off the reverse osmosis membrane filter element 2, and since the dirt contains a large amount of microorganisms, the sterilization module can be used to deliver sterilization liquid to the reverse osmosis membrane filter element 2 after the cleaning of the reverse osmosis membrane filter element 2 is completed, so that the reverse osmosis membrane filter element 2 after cleaning can be sterilized, bacteria breeding is avoided, and the cleanliness of the reverse osmosis membrane filter element 2 is greatly improved.

[0139] Preferably, before the cleaning liquid is circulated in the circulation loop, the control method of the utility model further comprises the following steps:

[0140] Obtaining an operating parameter of the water purification equipment;

[0141] According to the operating parameter, determining a circulation time length of the circulation of the cleaning liquid in the circulation loop;

[0142] The operating parameter comprises at least one of the water inlet quality of the reverse osmosis membrane filter element 2, the total water production of the reverse osmosis membrane filter element 2, the cumulative operating time length of the water purification equipment, the continuous time length during which the pure water flow rate of the reverse osmosis membrane filter element 2 is higher than a set pure water flow rate, the continuous water production time length after the service life of the prefilter element of the reverse osmosis membrane filter element 2 is reached, the pure water flow rate of the reverse osmosis membrane filter element 2, and the pressure difference before and after the membrane of the reverse osmosis membrane filter element 2.

[0143] Through the arrangement, the circulation time length of the cleaning liquid in the circulation loop is determined according to the operating parameter of the water purification equipment, the dirtiness degree of the reverse osmosis membrane filter element 2 can be evaluated according to the operating parameter, and then the circulation time length of the cleaning liquid in the circulation loop is determined according to the dirtiness degree, which can avoid the problem that the cleaning is not complete due to the too short circulation time caused by the high dirtiness degree of the reverse osmosis membrane filter element 2, and can avoid the problem of energy waste caused by the too long circulation time due to the low dirtiness degree of the reverse osmosis membrane filter element 2.

[0144] It should be noted that in actual application, a person skilled in the art can determine the circulation time length of the cleaning liquid in the circulation loop according to only one of the above-mentioned operating parameters, or can determine the circulation time length of the cleaning liquid in the circulation loop according to part of the above-mentioned operating parameters, and the like, and such flexible adjustment and change do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0145] Preferably, the step of “determining the circulation time length of the cleaning liquid in the circulation loop according to the operating parameter” specifically comprises:

[0146] According to the first operating parameter, predicting the pollution degree A of the reverse osmosis membrane filter element 2;

[0147] According to the second operation parameter, the degree of fouling B of the reverse osmosis membrane filter element 2 is determined;

[0148] According to the pollution degree A and the fouling degree B, the circulation time length of the cleaning liquid in the circulation loop is determined.

[0149] Specifically, the step of "determining the circulation time length of the cleaning liquid in the circulation loop according to the pollution degree A and the fouling degree B" specifically comprises:

[0150] The pollution degree A is compared with a preset pollution degree A1;

[0151] The fouling degree B is compared with a preset fouling degree B1;

[0152] If A < A1 and B < B1, the circulation time length of the cleaning liquid in the circulation loop is T1;

[0153] If A < A1 and B > B1, or A > A1 and B < B1, the circulation time length of the cleaning liquid in the circulation loop is T2;

[0154] If A > A1 and B > B1, the circulation time length of the cleaning liquid in the circulation loop is T3;

[0155] Wherein, T1 < T2 < T3.

[0156] Through the first operation parameter, the pollution degree that the reverse osmosis membrane filter element 2 can be contaminated can be predicted, through the second operation parameter, the degree that the reverse osmosis membrane filter element 2 is fouled can be reflected, according to the pollution degree and the fouling degree, the time length that the cleaning liquid soaks the reverse osmosis membrane filter element 2 can be accurately determined, ensure that the reverse osmosis membrane filter element 2 can be cleaned thoroughly.

[0157] Preferably, before the sterilization liquid is circulated in the circulation loop, the control method of the utility model further comprises the following steps:

[0158] Obtaining the water quality information of the cleaning liquid in the circulation loop in step S2;

[0159] According to the water quality information, the circulation time length of the sterilization liquid in the circulation loop in step S4 is determined;

[0160] Wherein, the water quality information comprises at least one of TDS value or turbidity.

[0161] Through the arrangement, since the dirt cleaned from the reverse osmosis membrane filter element 2 in the step S2 enters the cleaning liquid in the circulating loop, by obtaining the water quality information in the circulating loop in the step S2, the pollution degree of the reverse osmosis membrane filter element 2 can be determined, so that the sterilization time of the subsequent sterilization module for sterilizing the reverse osmosis membrane filter element 2 is determined according to the pollution degree of the reverse osmosis membrane filter element 2. On the one hand, it can avoid that the sterilization time is too short due to the high pollution degree, so that the reverse osmosis membrane filter element 2 cannot be effectively sterilized. On the other hand, it can avoid that the sterilization time is too long due to the low pollution degree of the reverse osmosis membrane filter element 2, so that the energy is wasted and the normal use of the water purification equipment is affected.

[0162] It should be noted that the water quality information can be set as a TDS value, or the water quality information can be set as turbidity, or the water quality information can be set as including a TDS value and turbidity, and the like. The adjustment and change of the specific setting type of the water quality information do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0163] Preferably, the water quality information includes a turbidity value, and the step of "obtaining the water quality information in the circulating loop in the step S2" specifically includes:

[0164] obtaining the turbidity value of the cleaning liquid in the circulating loop in the step S2;

[0165] determining the circulation time length of the sterilization liquid circulating in the circulating loop according to the turbidity value.

[0166] It should be noted that, as shown in Figures 1 to 6 a turbidity sensor 63 is arranged on the circulating loop, and the turbidity value of the cleaning liquid in the circulating loop is detected by the turbidity sensor 63.

[0167] It should be noted that, in actual application, the turbidity value can be compared with the preset turbidity, and the circulation time length of the sterilization liquid circulating in the circulating loop is determined according to the comparison result, or the difference value between the turbidity value and the preset turbidity can be calculated first, and then the difference value is compared with the preset value, and the circulation time length of the sterilization liquid circulating in the circulating loop is determined according to the comparison result, or the ratio between the turbidity value and the preset turbidity can be calculated first, and then the ratio is compared with the preset value, and the circulation time length of the sterilization liquid circulating in the circulating loop is determined according to the comparison result, and the like. The flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0168] Preferably, the step of "determining the circulation time length of the sterilization liquid circulating in the circulating loop according to the turbidity value" specifically includes:

[0169] calculating the difference value Δ=F-F0;

[0170] comparing the difference △ with the first preset value A1 and the second preset value A2 respectively;

[0171] determining a circulation time length of the sterilization liquid circulating in the circulation loop according to the comparison result;

[0172] wherein 0

[0173] Preferably, the step of "determining a circulation time length of the sterilization liquid circulating in the circulation loop according to the comparison result" specifically comprises:

[0174] if △

[0175] if A1≤△≤A2, the circulation time length of the sterilization liquid circulating in the circulation loop is t2;

[0176] if △>A2, the circulation time length of the sterilization liquid circulating in the circulation loop is t3;

[0177] wherein t1

[0178] By such a setting, when △

[0179] Preferably, as shown in Figure 12 after the sterilization module finishes sterilizing the reverse osmosis membrane filter element 2, and the reverse osmosis membrane filter element 2 resumes the water production mode, the control method of the utility model further comprises the following steps:

[0180] S5: obtaining a current water quality parameter of the pure water end of the reverse osmosis membrane filter element 2;

[0181] S6: selectively making the pure water end of the reverse osmosis membrane filter element 2 communicate with the pure water water member 51 according to the current water quality parameter.

[0182] With this setup, when cleaning the reverse osmosis membrane filter element 2, a small amount of cleaning agent will permeate to the pure water end of the reverse osmosis membrane filter element 2; when sterilizing the reverse osmosis membrane filter element 2, a small amount of disinfectant will permeate to the pure water end of the reverse osmosis membrane filter element 2. By acquiring the current water quality parameters of the pure water end of the reverse osmosis membrane filter element 2 and determining the water quality information of the pure water end of the reverse osmosis membrane filter element 2 based on the current water quality parameters, the pure water end of the reverse osmosis membrane filter element 2 can be selectively connected to the pure water component 51. On the one hand, when the current water quality is poor, the pure water end of the reverse osmosis membrane filter element 2 is not connected to the pure water component 51, which helps to discharge water containing a small amount of detergent and / or bactericide from the pure water end of the reverse osmosis membrane filter element 2, thereby helping to achieve zero additives and zero chemical pollution. On the other hand, when the current water quality is detected to be good, the pure water end of the reverse osmosis membrane filter element 2 is connected to the pure water component 51 in a timely manner, which can reduce the waste of water resources and further improve the user experience.

[0183] It should be noted that, in practical applications, those skilled in the art can obtain the current water quality parameters by setting up a water quality detection component and obtaining the detection value of the water quality detection component, or by taking water from the pure water outlet pipe 5 and detecting its water quality, etc. Such adjustments and changes to the specific method of obtaining the current water quality parameters do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0184] Preferably, such as Figures 1 to 6 As shown, this utility model also includes a water quality detection component 52, which is used to detect the current water quality parameters in the pure water outlet pipe 5.

[0185] It should be noted that, in practical applications, those skilled in the art can set the current water quality parameter to the current TDS value, or the current pH value, or any other possible form, etc. Such adjustments and changes to the specific setting type of the current water quality parameter do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0186] Preferably, such as Figure 12 As shown, the current water quality parameters include the current TDS value. The specific steps of "selectively connecting the pure water end of the reverse osmosis membrane filter element 2 to the pure water use component 51 according to the current water quality parameters" include:

[0187] Compare the current TDS value with the preset TDS value;

[0188] Based on the comparison results, the pure water end of the reverse osmosis membrane filter element 2 is selectively connected to the pure water use component 51.

[0189] Through such a setting, whether the small amount of cleaning agent and bactericide remaining in the reverse osmosis membrane filter core 2 is completely discharged can be more directly judged according to the current TDS value and the preset TDS value, so that whether the pure water end of the reverse osmosis membrane filter core 2 is communicated with the pure water water member 51 can be more accurately judged, and the user's use experience is further improved.

[0190] It should be noted that in actual application, it is not limited to comparing the current TDS value with the preset TDS value, and selectively communicating the pure water end of the reverse osmosis membrane filter core 2 with the pure water water member 51 according to the comparison result, for example, the difference between the current TDS value and the preset TDS value can be calculated first, and the difference is compared with the preset value, and the pure water end of the reverse osmosis membrane filter core 2 is selectively communicated with the pure water water member 51 according to the comparison result, or the ratio between the current TDS value and the preset TDS value can be calculated first, and the ratio is compared with the preset value, and the pure water end of the reverse osmosis membrane filter core 2 is selectively communicated with the pure water water member 51 according to the comparison result, 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. Of course, preferably, the current TDS value is compared with the preset TDS value, and the pure water end of the reverse osmosis membrane filter core 2 is selectively communicated with the pure water water member 51 according to the comparison result.

[0191] It should be noted that in actual application, the preset TDS value can be obtained by the user inputting information on the control panel of the water purification equipment, or the preset water quality parameter can be implanted on the controller of the water purification equipment in advance, and the preset TDS value is obtained through the information implanted on the controller. And the like. Such adjustment and change of the specific acquisition method of the preset TDS value does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0192] Preferably, the preset TDS value is implanted on the controller of the water purification equipment in advance, and the preset TDS value is obtained through the information implanted on the controller.

[0193] Preferably, as shown in Figure 12 The step of "selectively communicating the pure water end of the reverse osmosis membrane filter core 2 with the pure water water member 51 according to the comparison result" specifically includes:

[0194] If the current TDS value is greater than the preset TDS value, the pure water end of the reverse osmosis membrane filter core 2 is not communicated with the pure water water member 51;

[0195] If the current TDS value is less than or equal to the preset TDS value, the pure water end of the reverse osmosis membrane filter core 2 is communicated with the pure water water member 51.

[0196] Through such an arrangement, in the case of the current TDS value > the preset TDS value, it indicates that the TDS value of the pure water end of the reverse osmosis membrane filter core 2 is still high, that is, there is still a small amount of cleaning agent or bactericide at the pure water end of the reverse osmosis membrane filter core 2, at this time, the pure water end of the reverse osmosis membrane filter core 2 is not communicated with the pure water water member 51, which can more conveniently discharge the small amount of cleaning agent or bactericide remaining at the pure water end of the reverse osmosis membrane filter core 2, thereby more helping to achieve zero chemical addition, greatly improving the user's experience; when the current TDS value ≤ the preset TDS value, it indicates that the TDS value of the pure water end of the reverse osmosis membrane filter core 2 is not greater than the preset water quality parameter, at this time, the pure water end of the reverse osmosis membrane filter core 2 is communicated with the pure water water member 51, on the one hand, it can avoid waste of water resources, and at the same time, it helps to prolong the service life of the reverse osmosis membrane filter core 2; on the other hand, it can also avoid affecting the normal use of the water purification equipment.

[0197] It should be noted that in the case that the pure water end of the reverse osmosis membrane filter core 2 is not communicated with the pure water water member 51, the pure water end of the reverse osmosis membrane filter core 2 can be arranged to be communicated with the wastewater outlet pipe 21, so that the water containing a small amount of cleaning agent or bactericide remaining at the pure water end of the reverse osmosis membrane filter core 2 is discharged to the outside of the water purification equipment through the wastewater outlet pipe 21, or the pure water end of the reverse osmosis membrane filter core 2 can also be arranged to be communicated with the sewer pipe in the user's use scene, so that the water containing a small amount of cleaning agent or bactericide remaining at the pure water end of the reverse osmosis membrane filter core 2 is directly discharged into the sewer pipe, or the pure water end of the reverse osmosis membrane filter core 2 can also be arranged to be communicated with the upstream end of the booster pump, so that the water containing a small amount of cleaning agent or bactericide remaining at the pure water end of the reverse osmosis membrane filter core 2 is delivered to the water inlet end of the reverse osmosis membrane filter core 2 through the booster pump, and the cleaning agent or bactericide at the pure water end of the reverse osmosis membrane filter core 2 is discharged after multiple filtrations, and the like. Such flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0198] The following two embodiments will be introduced.

[0199] The following two embodiments will be introduced. Figures 3 to 6 The following two embodiments will be introduced.

[0200] Case 1:

[0201] As shown in Figure 3 and Figure 4 , the water purification equipment further comprises a drain pipe 22 and a drain valve 221, one end of the drain pipe 22 is communicated with the pure water outlet pipe 5, the other end is communicated with the wastewater outlet pipe 21, and the drain valve 221 is arranged on the drain pipe 22 and is used to control the on-off of the drain pipe 22.

[0202] Through the arrangement, after the cleaning of the reverse osmosis membrane filter core 2 is completed, the drain valve 221 is opened first, so that the pure water at the pure water end of the reverse osmosis membrane filter core 2 flows into the waste water outlet pipe 21 through the drain pipe 22, and when the pure water containing the cleaning agent is completely drained, the drain valve 221 is closed, so that the pure water at the pure water end of the reverse osmosis membrane filter core 2 flows into the pure water water member 51 through the pure water outlet pipe 5, thereby avoiding the pure water containing the cleaning agent from entering the pure water water member 51.

[0203] The waste water valve 211 is further arranged on the waste water outlet pipe 21, and when the reverse osmosis membrane filter core 2 needs to be cleaned or sterilized, the waste water valve 211 can prevent the cleaning liquid or the sterilizing liquid in the reverse osmosis membrane filter core 2 from flowing out through the waste water outlet pipe 21.

[0204] Case 2:

[0205] As shown in Figure 5 and Figure 6 The water purification device further comprises a backflow pipe 23 and a backflow valve 231, one end of the backflow pipe 23 is communicated with the pure water outlet pipe 5, the other end of the backflow pipe 23 is communicated with the upstream end of the booster pump 12, and the backflow valve 231 is arranged on the backflow pipe 23 and is used for controlling the opening and closing of the backflow pipe 23.

[0206] Through the arrangement, on the one hand, after the cleaning of the reverse osmosis membrane filter core 2 is completed, the pure water containing the cleaning agent at the pure water end of the reverse osmosis membrane filter core 2 can be drained to the upstream end of the booster pump 12 and further filtered through the reverse osmosis membrane filter core 2, which is helpful for draining the pure water containing the cleaning agent, and on the other hand, when the water purification device is in the normal water production mode and does not produce water for a long time, the reverse osmosis membrane filter core 2 will have the case that the TDS value of the first cup of water is increased, and the first cup of water can also flow back to the upstream end of the booster pump 12 through the backflow pipe 23, so as to prevent the user from drinking the water with a high TDS value.

[0207] It should be noted that the pure water containing the cleaning agent or the sterilizing agent which permeates to the pure water end of the reverse osmosis membrane filter core 2 will not affect the diaphragm in the booster pump 12 due to the low concentration.

[0208] It should be further noted that although the utility model is introduced in the above two cases, this is not restrictive, for example, the other end of the drain pipe 22 can be directly communicated with a sewer pipe or a waste water outlet of the water purification device, and the pure water containing the cleaning agent can be directly drained to the sewer pipe or the waste water outlet of the water purification device.

[0209] 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 water and 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 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0210] Exemplarily, the water purification device is a water purifier.

[0211] So far, the technical solution 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 solutions 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 outlet, a cleaning module and a sterilization module arranged in parallel, the cleaning outlet being in communication with a water inlet end of the reverse osmosis membrane filter core, the cleaning module being used for delivering cleaning liquid to the reverse osmosis membrane filter core, and the sterilization module being used for delivering sterilization liquid to the reverse osmosis membrane filter core; and a circulation pipe having a first end in communication with a wastewater end of the reverse osmosis membrane filter core and a second end in communication with the cleaning module and / or the sterilization module, so that the cleaning module and / or the sterilization module, the water inlet end of the reverse osmosis membrane filter core and the wastewater end of the reverse osmosis membrane filter core are sequentially communicated to form a circulation loop, wherein the water purification device is arranged to drive the cleaning liquid and / or the sterilization liquid to circulate in the circulation loop.

2. The water purification apparatus according to claim 1, characterized by The water purification device further comprises a water inlet main line in communication with the water inlet end of the reverse osmosis membrane filter core, wherein: the water purification device further comprises a booster pump arranged on the water inlet main line and located at an upstream end of the cleaning outlet, and a circulation pump arranged on the circulation loop and used for driving the cleaning liquid and / or the sterilization liquid to circulate in the circulation loop; and / or the cleaning assembly further has a cleaning inlet in communication with the water inlet main line, so that water in the water inlet main line enters the cleaning module and / or the sterilization module through the cleaning inlet.

3. The water purification apparatus according to claim 2, characterized by The cleaning assembly comprises a converging pipe, a cleaning module and a sterilization module arranged in parallel, the cleaning module comprises a cleaning pipeline, a cleaning valve arranged on the cleaning pipeline and a cleaning agent storage member, and the sterilization module comprises a sterilization pipeline, a sterilization valve arranged on the sterilization pipeline and a sterilization agent storage member, wherein a first end of the cleaning pipeline converges with a first end of the sterilization pipeline and is in communication with the cleaning inlet, a second end of the cleaning pipeline converges with a second end of the sterilization pipeline and is in communication with the converging pipe, a terminal end of the converging pipe forms the cleaning outlet, and the circulation pump is arranged on the converging pipe.

4. The water purification apparatus according to claim 3, characterized by The number of the cleaning pipelines is at least two, and a plurality of the cleaning pipelines are arranged in parallel, the cleaning valve and the cleaning agent storage member are arranged in one-to-one correspondence with the cleaning pipeline; and / or the number of the sterilization pipelines is at least two, and a plurality of the sterilization pipelines are arranged in parallel, the sterilization valve and the sterilization agent storage member are arranged in one-to-one correspondence with the sterilization pipeline.

5. The water purification apparatus according to claim 3, characterized by The cleaning assembly further comprises a first one-way valve arranged on the cleaning pipeline and / or the sterilization pipeline, the first one-way valve is arranged between the cleaning outlet and the cleaning agent storage member and / or the sterilization agent storage member, and the first one-way valve is arranged to prevent water in the water inlet main line from flowing reversely to the cleaning agent storage member and / or the sterilization agent storage member through the cleaning outlet.

6. The water purification apparatus according to claim 3, characterized by The cleaning assembly further comprises a second one-way valve arranged between the cleaning outlet and the circulation pump, and the second one-way valve is arranged to resist water pressure in the water inlet main line.

7. The water purification apparatus according to claim 2, wherein The water purification device further comprises a pure water outlet pipe and a pure water water-using member, the pure water end of the reverse osmosis membrane filter core is communicated with the pure water water-using member through the pure water outlet pipe, The water purification device further comprises 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 upstream end of the booster pump, and the backflow valve is arranged on the backflow pipe and is used for controlling the opening and closing of the backflow pipe.

8. The water purification apparatus according to claim 2, characterized by The water purification device further comprises a pure water outlet pipe and a pure water water-using member, the pure water end of the reverse osmosis membrane filter core is communicated with the pure water water-using member through the pure water outlet pipe, The water purification device further comprises 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 upstream end of the booster pump, and the backflow valve is arranged on the backflow pipe and is used for controlling the opening and closing of the backflow pipe.

9. The water purification apparatus according to claim 3, characterized by The cleaning agent storage member and / or the sterilizing agent storage member has a cavity, the cleaning agent storage member and / or the sterilizing agent storage member is arranged to be capable of storing cleaning agent and / or sterilizing agent when it is in a first working state and capable of collecting impurities in the circulating loop into the cavity when it is in a second working state.

10. The water purification apparatus of claim 1, wherein The water purification device further comprises an auxiliary cleaning member, the auxiliary cleaning member is arranged to be capable of promoting the action of the cleaning liquid on the dirt on the reverse osmosis membrane filter core so as to make the dirt fall off from the reverse osmosis membrane filter core. The water purification device further comprises an auxiliary cleaning member, the auxiliary cleaning member is arranged to be capable of promoting the action of the cleaning liquid on the dirt on the reverse osmosis membrane filter core so as to make the dirt fall off from the reverse osmosis membrane filter core.

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