Water purification equipment

Abstract

The utility model relates to the technical field of water purification, in particular to water purification equipment, and aims to solve the problem that the use experience of a user is poor due to the risk that a membrane of a reverse osmosis membrane filter element is punctured when the reverse osmosis membrane filter element is cleaned by using a cleaning assembly in the conventional water purification equipment. The water purification equipment comprises a reverse osmosis membrane filter element, a cleaning assembly and a filtering component, the cleaning assembly is arranged to be capable of dissolving a cleaning agent so that cleaning liquid can be formed in a cleaning agent storage component, and a cleaning outlet can be communicated with the water inlet end of the reverse osmosis membrane filter element; the filtering component is arranged to be capable of allowing liquid in the cleaning agent storage component to enter the reverse osmosis membrane filter element and preventing solid in the cleaning agent storage component from entering the reverse osmosis membrane filter element. According to the reverse osmosis membrane filter element, the solid cleaning agent can be prevented from entering the reverse osmosis membrane filter element, the solid cleaning agent can be prevented from puncturing a membrane in the reverse osmosis membrane filter element, the service life of the reverse osmosis membrane filter element is prolonged, 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 and drinking integrated machine gradually becomes the necessary drinking water facilities in people's daily life.

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

[0004] When the cleaning assembly is used to clean the reverse osmosis membrane filter element, the solid cleaning agent stored in the cleaning assembly is usually dissolved to form a cleaning liquid, and then the cleaning liquid is delivered into the reverse osmosis membrane filter element to clean the reverse osmosis membrane filter element. However, since the dissolution speed of some solid cleaning agents is slow, there may be some undissolved solid cleaning agents or agglomerated cleaning agents. If the solid cleaning agent enters the reverse osmosis membrane filter element, there is a risk of piercing the membrane of the reverse osmosis filter element, resulting in poor user 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 of the existing water purification equipment that there is a risk of piercing the membrane of the reverse osmosis membrane filter element when the cleaning assembly is used to clean the reverse osmosis membrane filter element, resulting in poor user 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 agent storage member and a cleaning outlet, the cleaning agent storage member is used to store a cleaning agent, the cleaning assembly is arranged to be able to dissolve the cleaning agent to form a cleaning liquid in the cleaning agent storage member, the cleaning outlet is able to communicate with the water inlet end of the reverse osmosis membrane filter element to deliver the cleaning liquid into the reverse osmosis membrane filter element; and a filter member arranged between the cleaning agent storage member and the reverse osmosis membrane filter element, the filter member is arranged to be able to allow the liquid in the cleaning agent storage member to enter the reverse osmosis membrane filter element and prevent the solid in the cleaning agent storage member from entering the reverse osmosis membrane filter element.

[0007] In the preferred technical scheme of the water purifying device, the filtering component comprises a filtering box and a filtering element arranged in the filtering box, and the filtering element is arranged to allow liquid in the cleaning liquid to flow in the water flow direction and prevent solid in the cleaning liquid from passing in the water flow direction.

[0008] In the preferred technical scheme of the water purifying device, the filtering element is a filtering mesh plate or a filtering mesh bag.

[0009] In the preferred technical scheme of the water purifying device, the water purifying device further comprises a water inlet main path in communication with the water inlet end of the reverse osmosis membrane filter core, the cleaning outlet is in communication with the water inlet main path, the cleaning assembly has a cleaning pipeline, the cleaning agent storage component is arranged on the cleaning pipeline, and the filtering component is arranged on the cleaning pipeline and located at the downstream end of the cleaning agent storage component; or the filtering component is arranged on the water inlet main path and located between the cleaning outlet and the reverse osmosis membrane filter core.

[0010] In the preferred technical scheme of the water purifying device, the cleaning assembly further has a cleaning inlet in communication with the water inlet main path, so that water in the cleaning main path enters the cleaning agent storage component to dissolve the cleaning agent and form the cleaning liquid.

[0011] In the preferred technical scheme of the water purifying device, the water purifying device further comprises a pre-filter unit, the water outlet end of the pre-filter unit is in communication with the water inlet main path, and the cleaning inlet is located at the downstream end of the pre-filter unit.

[0012] In the preferred technical scheme of the water purifying device, the water purifying device further comprises a circulation pipeline, a first end of the circulation pipeline is in communication with the waste water end of the reverse osmosis membrane filter core, and a second end of the circulation pipeline is in communication with the cleaning assembly, so that the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core, and the waste water end of the reverse osmosis membrane filter core are sequentially communicated to form a cleaning loop, and the water purifying device is arranged to enable the cleaning liquid to circulate in the cleaning loop.

[0013] In the preferred technical scheme of the water purifying device, the water purifying device further comprises a circulation pump and a booster pump, the cleaning outlet is in communication with the water inlet main path, the booster pump is arranged on the water inlet main path and located at the upstream end of the cleaning outlet, and the circulation pump is arranged on the cleaning loop and can drive the cleaning liquid to circulate in the cleaning loop.

[0014] In the preferred technical scheme of the water purification device, the water purification device further comprises a waste water outlet pipe, wherein the waste water outlet pipe is in communication with a waste water end of the reverse osmosis membrane filter core, and a first end of the circulation pipe is in communication with the waste water outlet pipe; or the water purification device further comprises a waste water outlet pipe and a reversing valve, the waste water end of the reverse osmosis membrane filter core is in communication with a first interface of the reversing valve, the waste water outlet pipe is in communication with a second interface of the reversing valve, a first end of the circulation pipe is in communication with a third interface of the reversing valve, and the first interface of the reversing valve can selectively communicate with the second interface or the third interface.

[0015] In the preferred technical scheme of the water purification device, the cleaning assembly comprises a cleaning pipeline and a cleaning valve and a cleaning agent storage member arranged on the cleaning pipeline, two ends of the cleaning pipeline form the cleaning inlet and the cleaning outlet respectively, the cleaning agent storage member is located at a downstream end of the cleaning valve and is used for storing an acidic cleaning agent or an alkaline cleaning agent; or the cleaning assembly comprises at least two cleaning pipelines arranged in parallel, a cleaning valve and a cleaning agent storage member arranged on each of the cleaning pipelines, first ends of the cleaning pipelines converge and form the cleaning inlet, second ends of the cleaning pipelines converge and form the cleaning outlet, the cleaning agent storage member is located at a downstream end of the cleaning valve, and the cleaning agent storage member on each of the cleaning pipelines is used for storing a different type of cleaning agent.

[0016] In the case of adopting the preferred technical scheme, by arranging the filtering member, the undissolved solid cleaning agent or the caked solid cleaning agent in the cleaning agent storage member can be prevented from entering the reverse osmosis membrane filter core, so that only the cleaning liquid can enter the reverse osmosis membrane filter core, the solid cleaning agent can be effectively prevented from puncturing the membrane sheet in the reverse osmosis membrane filter core, the service life of the reverse osmosis membrane filter core is prolonged, and the user experience is improved.

[0017] Further, compared with the form of arranging the filtering member into a filter screen located in the cleaning pipeline or the water inlet main pipeline, arranging the filtering member into a filter box and a filter element can collect the undissolved cleaning agent into the collection cavity, so that the undissolved cleaning agent is prevented from excessively gathering in the cleaning pipeline or the water inlet main pipeline to cause blockage, normal cleaning of the reverse osmosis membrane filter core is ensured, and the user experience is further improved.

[0018] Further, compared with the form of arranging the filter component on the water inlet main path, arranging the filter component on the cleaning pipeline can avoid affecting the flow rate in the normal water production mode of the water purification equipment due to the arrangement of the filter component, and can also avoid the solid cleaning agent intercepted by the filter component from being dissolved by the water in the water inlet main path to enter the reverse osmosis membrane filter core when the water purification equipment is in the normal water production mode, thereby avoiding the problem of cleaning agent residue and further improving the user experience.

[0019] Further, by arranging the cleaning inlet at the downstream end of the pre-filter unit, the purified water filtered by the pre-filter unit can enter the cleaning agent storage component through the cleaning inlet, and the cleaning agent is dissolved by the purified water filtered by the pre-filter unit, thereby improving the solubility of the cleaning agent and the cleanliness of the cleaning liquid, so that the cleaning effect of the reverse osmosis membrane filter core can be effectively improved.

[0020] Further, by arranging the circulation pipe, the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core, and the wastewater end of the reverse osmosis membrane filter core are sequentially communicated to form a cleaning loop, and the cleaning liquid can flow in the cleaning loop, so that the reverse osmosis membrane filter core can be flushed multiple times, thereby effectively dissolving the dirt on the reverse osmosis membrane filter core into the cleaning liquid, which not only shortens the cleaning time of the reverse osmosis membrane filter core, but also effectively improves the cleaning effect of the reverse osmosis membrane filter core, further improving the user experience.

[0021] Further, compared with the form of driving the liquid in the cleaning loop to flow by the booster pump, the form of driving the liquid in the cleaning loop to flow by the circulation pump can avoid the damage of the diaphragm of the booster pump caused by the cleaning liquid entering the booster pump, thereby avoiding affecting the service life of the booster pump, and since the cost of the circulation pump is much lower than that of the booster pump, the cost of the water purification equipment can be greatly saved, further improving the user 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 the embodiment five of the water purification equipment of the utility model;

[0028] Figure 6 is a structural schematic view of the embodiment six of the water purification equipment of the utility model;

[0029] Figure 7 is a structural schematic view of the filter member of one of the embodiments of the utility model;

[0030] Figure 8 is a structural schematic view of the filter member of another embodiment of the utility model;

[0031] Figure 9 is a structural schematic view of the filter member of yet another embodiment of the utility model;

[0032] Figure 10 is a structural schematic view of the filter member of yet another embodiment of the utility model.

[0033] List of reference signs:

[0034] 1, water inlet main path; 11, water inlet valve; 12, booster pump; 2, reverse osmosis membrane filter core; 21, waste water outlet pipe; 211, waste water valve; 301, cleaning inlet; 302, cleaning outlet; 31, cleaning pipeline; 311, first cleaning pipe; 312, second cleaning pipe; 32, cleaning valve; 321, first cleaning valve; 322, second cleaning valve; 33, cleaning agent storage member; 331, first cleaning agent storage member; 332, second cleaning agent storage member; 34, one-way valve; 341, first one-way valve; 342, second one-way valve; 343, third one-way valve; 35, manifold; 4, pre-filter unit; 5, pure water outlet pipe; 51, pure water water member; 61, circulation pipe; 62, circulation pump; 7, reversing valve; 8, filter member; 81, filter box; 8201, first chamber; 8202, second chamber; 8203, cavity; 83, filter element. DETAILED DESCRIPTION

[0035] 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.

[0036] It should be noted that in the description of the utility model, the terms "upper", "lower", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a 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", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] 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.

[0038] Based on the problem that the user's use experience is poor due to the risk of piercing the membrane of the reverse osmosis membrane filter core when the existing water purification equipment in the background art uses the cleaning assembly to clean the reverse osmosis membrane filter core, the utility model provides a water purification equipment.

[0039] As shown in Figures 1 to 6 The water purification equipment of the utility model comprises a reverse osmosis membrane filter core 2, a cleaning assembly and a filtering member 8.

[0040] The cleaning assembly has a cleaning agent storage member 33 and a cleaning outlet 302, the cleaning agent storage member 33 is used for storing cleaning agent, the cleaning assembly is arranged to be capable of dissolving the cleaning agent to form a cleaning liquid in the cleaning agent storage member 33, the cleaning outlet 302 is capable of communicating with the water inlet end of the reverse osmosis membrane filter core 2 to deliver the cleaning liquid into the reverse osmosis membrane filter core 2, the filtering member 8 is arranged between the cleaning agent storage member 33 and the reverse osmosis membrane filter core 2, and the filtering member 8 is arranged to be capable of allowing the liquid in the cleaning agent storage member 33 to enter the reverse osmosis membrane filter core 2 and preventing the solid in the cleaning agent storage member 33 from entering the reverse osmosis membrane filter core 2.

[0041] By arranging the filtering member 8, the undissolved solid cleaning agent or the caked cleaning agent in the cleaning agent storage member 33 can be prevented from entering the reverse osmosis membrane filter core 2, so that only the cleaning liquid can enter the reverse osmosis membrane filter core 2, the solid cleaning agent is effectively prevented from piercing the membrane of the reverse osmosis membrane filter core 2, and the service life of the reverse osmosis membrane filter core 2 is prolonged, and the use experience of the user is improved.

[0042] It should be noted that in actual application, the utility model is not limited to the specific communication mode of the cleaning outlet 302 and the water inlet end of the reverse osmosis membrane filter core 2, as long as the cleaning liquid in the cleaning agent storage member 33 can be delivered into the reverse osmosis membrane filter core 2. For example, the reverse osmosis membrane filter core 2 can be provided with two water inlets, the cleaning outlet 302 and the water inlet main line 1 are communicated with the two water inlets respectively, or the cleaning outlet 302 can be communicated with the water inlet main line 1, the cleaning liquid in the cleaning agent storage member 33 is delivered into the reverse osmosis membrane filter core 2 through the water inlet main line 1, and the like, and the 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.

[0043] Preferably, as shown in the drawings, the water purification equipment further comprises a water inlet main line 1, the water inlet main line 1 is communicated with the reverse osmosis membrane filter core 2, and the cleaning outlet 302 is communicated with the water inlet main line 1. Figures 1 to 6

[0044] It should be noted that in actual application, the utility model is not limited to the specific setting position of the filter member 8, as long as the liquid in the cleaning agent storage member 33 can enter into the reverse osmosis membrane filter core 2 and the solid in the cleaning agent storage member 33 can be prevented from entering into the reverse osmosis membrane filter core 2.

[0045] In one specific embodiment, the cleaning assembly has a cleaning pipeline 31, and the cleaning agent storage member 33 is arranged on the cleaning pipeline 31 and located at the downstream end of the cleaning agent storage member 33.

[0046] In another specific embodiment, the filter member 8 is arranged on the water inlet main line 1 and located between the cleaning outlet 302 and the reverse osmosis membrane filter core 2.

[0047] It should be noted that although the above two embodiments can allow the liquid in the cleaning agent storage member 33 to enter into the reverse osmosis membrane filter core 2 and prevent the solid in the cleaning agent storage member 33 from entering into the reverse osmosis membrane filter core 2, compared with the form of arranging the filter member 8 on the water inlet main line 1, arranging the filter member 8 on the cleaning pipeline 31 can avoid affecting the flow rate in the normal water production mode of the water purification equipment due to the arrangement of the filter member 8, and can also avoid that the solid cleaning agent intercepted by the filter member 8 is dissolved by the water in the water inlet main line 1 and enters into the reverse osmosis membrane filter core 2 when the water purification equipment is in the normal water production mode, thereby causing the problem of cleaning agent residue and further improving the user experience.

[0048] ​It should be noted that in actual application, the specific setting type of the filtering member 8 is not limited, for example, the filtering member 8 can be set as a filter screen located in the cleaning pipeline 31 or the water inlet main pipeline 1, or the filtering member 8 can be set as a filter box and a filtering element arranged in the filter box, the filtering element is arranged to allow liquid in the cleaning liquid to flow in the water flow direction and prevent solid in the cleaning liquid from passing in the water flow direction, and the like, and the adjustment and change of the specific setting type of the filtering member 8 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] Preferably, as shown in the figure, the filtering member 8 comprises a filter box 81 and a filtering element 83, the filtering element 83 is arranged to allow liquid in the cleaning liquid to flow in the water flow direction and prevent solid in the cleaning liquid from passing in the water flow direction, the filter box 81 has a collection cavity, and the filtering element 83 is located at the downstream end of the collection cavity to collect the solid in the cleaning liquid into the collection cavity. Figures 7 to 10

[0050] Through such setting, compared with the form that the filtering member 8 is set as a filter screen located in the cleaning pipeline 31 or the water inlet main pipeline 1, the form that the filtering member 8 is set as the filter box 81 and the filtering element 83 can collect the undissolved cleaning agent into the collection cavity, thereby avoiding that the undissolved cleaning agent excessively gathers in the cleaning pipeline 31 or the water inlet main pipeline 1 to cause blockage, ensuring the normal cleaning of the reverse osmosis membrane filter core 2, and further improving the use experience of the user.

[0051] It should be noted that in actual application, the filtering element 83 can be set as a filter screen plate, or the filtering element 83 can be set as a filter screen pocket, or the filtering element 83 can be set as any other possible form, and the like, and the adjustment and change of the specific setting type of the filtering element 83 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0052] Preferably, the filtering element 83 is a filter screen plate or a filter screen pocket.

[0053] It should be noted that the filtering element 83 is located at the downstream end of the collection cavity, that is, the filtering element 83 is located at the downstream end of the collection cavity in the flow direction of the cleaning liquid, that is, the cleaning liquid first flows through the collection cavity and then flows through the filtering element 83.

[0054] It should be further noted that the present application does not limit the specific setting position of the filtering element 83, as long as the filtering element 83 is located at the downstream end of the collection cavity. For example, the filtering element can be arranged in the box body 81 (such as Figure 7 、 Figure 9 and​Figure 10 The filter element 83 can be arranged at the central position of the box body 81, or arranged at the position close to the water outlet pipe, etc. The adjustment and change of the specific arrangement position of the filter element 83 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0055] In one embodiment, as shown in FIG. 1, the filter element 83 is arranged at the central position of the box body 81, and divides the internal space of the box body 81 into the first chamber 8201 and the second chamber 8202 arranged in sequence along the horizontal direction. The water inlet pipe and the water outlet pipe of the box body 81 are arranged at the two sides of the filter element 83 respectively, and the water inlet pipe is communicated with the first chamber 8201, and the water outlet pipe is communicated with the second chamber 8202. The collecting cavity is formed in the first chamber 8201. Figure 7 In another embodiment, as shown in FIG. 2, the filter element 83 is arranged at the position close to the water outlet pipe of the box body 81, and the box body 81 has a cavity 8203. The collecting cavity is formed in the cavity 8203.

[0056] Figure 8 In another embodiment, as shown in FIG. 3, the filter element 83 is arranged at the position close to the water outlet pipe of the box body 81, and the box body 81 has a cavity 8203. The collecting cavity is formed in the cavity 8203.

[0057] In another embodiment, as shown in FIG. 4, the filter element 83 is arranged in the box body 81, and divides the internal space of the box body 81 into the first chamber 8201 and the second chamber 8202 arranged in sequence along the vertical direction. The water inlet pipe extends into the first chamber 8201, and the water outlet pipe is arranged above the filter element 83 and communicated with the second chamber 8202. The collecting cavity is formed in the first chamber 8201. Figure 9 In another embodiment, as shown in FIG. 5, the filter element 83 is arranged in the box body 81, and divides the internal space of the box body 81 into the first chamber 8201 and the second chamber 8202 arranged in sequence along the vertical direction. The water inlet pipe is arranged above the filter element 83 and communicated with the second chamber 8202, and the water outlet pipe extends into the first chamber 8201. The collecting cavity is formed in the second chamber 8202.

[0058] Figure 10 In another embodiment, as shown in FIG. 5, the filter element 83 is arranged in the box body 81, and divides the internal space of the box body 81 into the first chamber 8201 and the second chamber 8202 arranged in sequence along the vertical direction. The water inlet pipe is arranged above the filter element 83 and communicated with the second chamber 8202, and the water outlet pipe extends into the first chamber 8201. The collecting cavity is formed in the second chamber 8202.

[0059] ​​It should be noted that, in practical applications, those skilled in the art do not impose any limitations on the specific manner in which the cleaning component can dissolve the cleaning agent to form a cleaning liquid within the cleaning agent storage component 33. For example, the cleaning inlet 301 of the cleaning component can be configured to connect with the main water inlet 1 so that water in the main water inlet 1 enters the cleaning agent storage component 33 to dissolve the cleaning agent and form a cleaning liquid. Alternatively, the cleaning agent storage component 33 can be configured to have a first chamber and a second chamber that are independent of each other. The first chamber and the second chamber are used to store the cleaning agent and the solvent, respectively. When the reverse osmosis membrane filter element 2 needs to be cleaned, the first chamber and the second chamber are connected to dissolve the cleaning agent, etc. 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.

[0060] Preferably, such as Figures 1 to 6 As shown, the cleaning component also has a cleaning inlet 301, which is connected to the main water inlet 1 so that water in the main water inlet 1 enters the cleaning agent storage component 33 to dissolve the cleaning agent and form a cleaning solution.

[0061] With this setup, when the reverse osmosis membrane filter element 2 needs to be cleaned, the water in the main inlet channel 1 can be directly transported to the cleaning agent storage component 33, eliminating the need to store solvent in the cleaning agent storage component 33. This reduces the space required for the cleaning agent storage component 33 and further enhances the user experience.

[0062] Preferably, such as Figures 1 to 6 As shown, the water purification equipment of this utility model also includes a pre-filter unit 4. The outlet end of the pre-filter unit 4 is connected to the main water inlet 1, and the cleaning inlet 301 is located at the downstream end of the pre-filter unit 4.

[0063] With this configuration, by placing the cleaning inlet 301 downstream of the pre-filter unit 4, the purified water filtered by the pre-filter unit 4 can enter the cleaning agent storage component 33 through the cleaning inlet 301. The purified water filtered by the pre-filter unit 4 can be used to dissolve the cleaning agent, thereby improving the solubility of the cleaning agent and the cleanliness of the cleaning solution, thus effectively improving the cleaning effect of the reverse osmosis membrane filter element 2.

[0064] It should be noted that, in practical applications, those skilled in the art can set the pre-filter unit 4 as a pre-filter cartridge, or they can set the pre-filter unit 4 as a composite cartridge including a pre-filter cartridge and a post-filter cartridge, etc. Such adjustments and changes to the specific type of the pre-filter unit 4 do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0065] Preferably, the pre-filter unit 4 is a pre-filter cartridge.

[0066] Preferably, such as Figures 4 to 6 As shown, the water purification equipment of this utility model also includes a circulation pipe 61. The first end of the circulation pipe 61 is connected to the wastewater end of the reverse osmosis membrane filter element 2, and the second end of the circulation pipe 61 is connected to the cleaning component, so that the cleaning component, the inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 are connected in sequence to form a cleaning circuit. The water purification equipment is configured to enable the cleaning liquid to circulate in the cleaning circuit.

[0067] By setting up the circulation pipe 61, the cleaning component, the inlet end of the reverse osmosis membrane filter element 2, and the wastewater end of the reverse osmosis membrane filter element 2 can be connected in sequence to form a cleaning circuit. The cleaning liquid can circulate in the cleaning circuit, thereby flushing the reverse osmosis membrane filter element 2 multiple times. This effectively dissolves the dirt on the reverse osmosis membrane filter element 2 and puts it into the cleaning liquid. This not only shortens the cleaning time of the reverse osmosis membrane filter element 2, but also effectively improves the cleaning effect of the reverse osmosis membrane filter element 2, further enhancing the user experience.

[0068] It should be noted that, in practical applications, this utility model does not limit the specific driving method for the water purification equipment to drive the cleaning liquid to circulate in the cleaning circuit. For example, a circulation pump 62 can be set on the cleaning circuit to drive the cleaning liquid to circulate in the cleaning circuit. Alternatively, the cleaning outlet 302 of the cleaning component can be set to be connected to the inlet end of the reverse osmosis membrane filter element 2 through the main water inlet 1 of the water purification equipment, and the cleaning liquid in the cleaning circuit can be driven to circulate through the booster pump 12 on the main water inlet 1, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0069] Preferably, such as Figures 4 to 6 As shown, the water purification equipment of this utility model also includes a booster pump 12 and a circulation pump 62. The booster pump 12 is installed on the main water inlet 1 and located upstream of the cleaning outlet 302. The circulation pump 62 is installed on the cleaning circuit and is used to drive the liquid circulation flow in the cleaning circuit.

[0070] With this setup, compared to the method of driving the liquid circulation flow in the cleaning circuit by the booster pump 12, the method of driving the liquid circulation flow in the cleaning circuit by setting the circulation pump 62 can prevent the cleaning liquid from entering the booster pump 12 and damaging the diaphragm of the booster pump 12, thereby avoiding affecting the service life of the booster pump 12. Furthermore, since the cost of the circulation pump 62 is much lower than that of the booster pump 12, it can greatly save the cost of the water purification equipment and further improve the user experience.

[0071] It should be noted that in actual application, the specific setting position of the circulating pump 62 on the cleaning circuit is not limited in the utility model, for example, the circulating pump 62 can be arranged on the circulating pipe 61, or the circulating pump 62 can be arranged on the cleaning pipe, or the circulating pump 62 can be arranged on the water inlet main line 1 between the cleaning outlet 302 and the reverse osmosis membrane filter core 2, and the like, and the adjustment and change of the specific setting position of the circulating pump 62 on the cleaning circuit do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0072] Preferably, the circulating pump 62 is arranged on the circulating pipe 61.

[0073] Through the arrangement, the circulating pump 62 can be arranged on the cleaning pipe and the water inlet main line 1, so that the problem of water leakage of the circulating pump 62 caused by the large water pressure on the water inlet main line and the cleaning pipe downstream of the booster pump 12 when the water purification equipment is in the normal water production mode can be avoided, and the use experience of the user is further improved.

[0074] It should be noted that in actual application, the specific communication mode of the first end of the circulating pipe 61 and the waste water end of the reverse osmosis membrane filter core 2 is not limited in the utility model, as long as the water flowing out of the waste water end of the reverse osmosis membrane filter core 2 can enter the circulating pipe 61.

[0075] In one specific embodiment, as shown in Figure 4 and Figure 5 The water purification equipment further comprises a waste water outlet pipe 21, the waste water end of the reverse osmosis membrane filter core 2 is in communication with the waste water outlet pipe 21, and the first end of the circulating pipe 61 is in communication with the waste water outlet pipe 21.

[0076] In another specific embodiment, as shown in Figure 6 The water purification equipment further comprises a waste water outlet pipe 21 and a reversing valve 7, the waste water end of the reverse osmosis membrane filter core 2 is in communication with a first interface of the reversing valve 7, the waste water outlet pipe 21 is in communication with a second interface of the reversing valve 7, the first end of the circulating pipe 61 is in communication with a third interface of the reversing valve 7, and the first interface of the reversing valve 7 can selectively communicate with the second interface or the third interface.

[0077] Preferably, as shown in Figures 1 to 6 The waste water outlet pipe 21 further comprises a waste water valve 211.

[0078] It should be noted that in actual application, the specific structure of the cleaning assembly is not limited in the present application, for example, the cleaning assembly can be provided with only one cleaning agent storage member 33, or the cleaning assembly can be provided with a plurality of cleaning agent storage members 33 arranged in parallel, etc., and such adjustment and change of the specific structure of the cleaning assembly does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0079] The following will be introduced in combination with the following two embodiments.

[0080] Embodiment one:

[0081] As shown in Figure 1 and Figure 4 , the cleaning assembly comprises a cleaning pipeline 31, a cleaning valve 32 and a cleaning agent storage member 33 arranged in sequence on the cleaning pipeline 31, and the cleaning agent storage member 33 is located at the downstream end of the cleaning valve 32 and is used for storing acidic cleaning agent or alkaline cleaning agent.

[0082] In one specific embodiment, as shown in Figure 1 , when the cleaning assembly cleans the reverse osmosis membrane filter element 2, the cleaning valve 32 is opened, the water in the water inlet main pipeline 1 enters the cleaning agent storage member 33 through the cleaning inlet 301, and the cleaning agent stored in the cleaning agent storage member 33 is dissolved to form a cleaning liquid, which is then discharged through the cleaning outlet 302 and delivered to the reverse osmosis membrane filter element 2, and then the reverse osmosis membrane filter element 2 is soaked with the cleaning liquid to remove the dirt on the reverse osmosis membrane filter element 2.

[0083] In another specific embodiment, as shown in Figure 4 , the cleaning assembly further comprises a circulating pipeline 61, the first end of the circulating pipeline 61 is in communication with the wastewater end of the reverse osmosis membrane filter element 2, and the second end of the circulating pipeline 61 is in communication with the cleaning pipeline 31, so that the cleaning assembly, the water inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 are sequentially communicated to form a cleaning loop, when the cleaning assembly cleans the reverse osmosis membrane filter element 2, the cleaning valve 32 is opened, the water in the water inlet main pipeline 1 enters the cleaning agent storage member 33 through the cleaning inlet 301, and the cleaning agent stored in the cleaning agent storage member 33 is dissolved to form a cleaning liquid, which is then discharged through the cleaning outlet 302 and delivered to the reverse osmosis membrane filter element 2, the cleaning valve 32 is closed, and the circulating pump 62 is started to make the cleaning liquid circulate in the cleaning loop, and the reverse osmosis membrane filter element 2 is subjected to circulating flushing to remove the dirt on the reverse osmosis membrane filter element 2.

[0084] Embodiment two:

[0085] As shown in Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the cleaning assembly comprises at least two cleaning pipes 31 arranged in parallel, cleaning valves 32 arranged on each of the cleaning pipes 31, and cleaning agent storage members 33, first ends of the plurality of cleaning pipes 31 are connected and form a cleaning inlet 301, second ends of the plurality of cleaning pipes 31 are connected and form a cleaning outlet 302, the cleaning agent storage members 33 are located at downstream ends of the cleaning valves 32, and the cleaning agent storage members 33 on each of the cleaning pipes 31 are used to store different types of cleaning agents.

[0086] In one specific embodiment, as shown in Figure 2 and Figure 3 When the cleaning assembly cleans the reverse osmosis membrane filter element 2, one of the cleaning valves 32 is opened, water in the water inlet main line 1 enters one of the cleaning agent storage members 33 through the cleaning inlet 301 and dissolves the cleaning agent stored in the cleaning agent storage member 33 to form a cleaning solution, the cleaning solution is discharged through the cleaning outlet 302 and transported into the reverse osmosis membrane filter element 2, and the reverse osmosis membrane filter element 2 is soaked with the cleaning solution to remove dirt on the reverse osmosis membrane filter element 2.

[0087] In another specific embodiment, as shown in Figure 5 and Figure 6 The cleaning assembly further comprises a circulation pipe 61, a first end of the circulation pipe 61 is in communication with the wastewater end of the reverse osmosis membrane filter element 2, and a second end of the circulation pipe 61 is in communication with the cleaning pipe 31, so that the cleaning assembly, the water inlet end of the reverse osmosis membrane filter element 2, and the wastewater end of the reverse osmosis membrane filter element 2 are sequentially connected to form a cleaning loop, when the cleaning assembly cleans the reverse osmosis membrane filter element 2, one of the cleaning valves 32 is opened, water in the water inlet main line 1 enters one of the cleaning agent storage members 33 through the cleaning inlet 301 and dissolves the cleaning agent stored in the cleaning agent storage member 33 to form a cleaning solution, the cleaning solution is discharged through the cleaning outlet 302 and transported into the reverse osmosis membrane filter element 2, the cleaning valve 32 is closed, and the circulation pump 62 is started to make the cleaning solution circulate in the cleaning loop, the reverse osmosis membrane filter element 2 is circularly flushed to remove dirt on the reverse osmosis membrane filter element 2.

[0088] It should be noted that in actual application, the specific number of the cleaning pipelines 31 arranged in parallel is not limited in the utility model, for example, two cleaning pipelines 31 arranged in parallel can be arranged, the cleaning valve 32 and the cleaning agent storage member 33 are arranged on the two cleaning pipelines 31 respectively, or three cleaning pipelines 31 arranged in parallel can be arranged, the cleaning valve 32 and the cleaning agent storage member 33 are arranged on the three cleaning pipelines 31 respectively, or a plurality of cleaning pipelines 31 arranged in parallel can be arranged, the cleaning valve 32 and the cleaning agent storage member 33 are arranged on the plurality of cleaning pipelines respectively, and the like, the adjustment and change of the specific arrangement number of the cleaning pipelines 31 arranged in parallel do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0089] Specifically, as shown in Figure 2 、 Figure 3 、 Figure 5 and Figure 6 , the cleaning assembly comprises the first cleaning pipeline 311 and the second cleaning pipeline 312 arranged in parallel, the first cleaning valve 321 and the first cleaning agent storage member 331 are arranged on the first cleaning pipeline 311, the second cleaning valve 322 and the second cleaning agent storage member 332 are arranged on the second cleaning pipeline 312, the first end of the first cleaning pipeline 311 and the first end of the second cleaning pipeline 312 meet and form the cleaning inlet 301, the second end of the first cleaning pipeline 311 and the second end of the second cleaning pipeline 312 meet and form the cleaning outlet 302, the first cleaning agent storage member 331 is located at the downstream end of the first cleaning valve 321 and is used for storing the acidic cleaning agent, and the second cleaning agent storage member 332 is located at the downstream end of the second cleaning valve 322 and is used for storing the alkaline cleaning agent.

[0090] It should be noted that when the reverse osmosis membrane filter core 2 is cleaned, the reverse osmosis membrane filter core 2 can be first cleaned by using the acidic cleaning agent, then cleaned by using the alkaline cleaning agent, or the reverse osmosis membrane filter core 2 can be first cleaned by using the alkaline cleaning agent, then cleaned by using the acidic cleaning agent, and the like, the 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.

[0091] The cleaning process of the reverse osmosis membrane filter core 2 will be introduced below by taking the example that the reverse osmosis membrane filter core 2 is first cleaned by using the acidic cleaning agent, then cleaned by using the alkaline cleaning agent.

[0092] As shown in Figure 2 、 Figure 3 、 Figure 5 and Figure 6As shown, the first cleaning valve 321 is opened, the second cleaning valve 322 remains closed, the water in the water inlet main line 1 enters the first cleaning pipe 311, and the first cleaning liquid (i.e. the acidic solution) is formed in the first cleaning agent storage member 331, and then is discharged through the cleaning outlet 302 and delivered into the reverse osmosis membrane filter element 2, at this time, the first cleaning pipe 311, the water inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 are sequentially communicated to form a cleaning loop, the reverse osmosis membrane filter element 2 is soaked or circularly washed to remove the inorganic dirt on the reverse osmosis membrane filter element 2, after the cleaning is completed, the liquid in the reverse osmosis membrane filter element 2 is discharged and washed, then the first cleaning valve 321 is closed and the second cleaning valve 322 is opened, the water in the water inlet main line 1 enters the second cleaning pipe 312, and the second cleaning liquid (i.e. the alkaline solution) is formed in the second cleaning agent storage member 332, at this time, the second cleaning pipe 312, the water inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 are sequentially communicated to form a cleaning loop, and then are discharged through the cleaning outlet 302 and delivered into the reverse osmosis membrane filter element 2, the reverse osmosis membrane filter element 2 is soaked or circularly washed to remove the organic dirt on the reverse osmosis membrane filter element 2.

[0093] It should be noted that the specific type of the acidic cleaning liquid is not limited in the utility model, for example, the acidic cleaning liquid can be at least one of malic acid, citric acid, hydrochloric acid and phosphoric acid, of course, the acidic cleaning liquid can also be other types of acidic solution, and the person skilled in the art can adjust according to actual needs.

[0094] Preferably, the acidic cleaning liquid is malic acid or citric acid, which has good disinfection and bacteriostasis effect while cleaning dirt, and can disinfect and sterilize the reverse osmosis membrane filter element 2.

[0095] It should be noted that the specific type of the alkaline cleaning liquid is not limited in the utility model, for example, the alkaline cleaning liquid 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 alkaline cleaning liquid can also be other types of alkaline solution, and the person skilled in the art can adjust according to actual needs.

[0096] It should be further explained that the present application does not make any limitation on the form of the cleaning agent in the first cleaning agent storage member 331 and the second cleaning agent storage member 332, for example, the cleaning agent in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 can be both in powder form, or the cleaning agent in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 can be both in granular form, etc., and such adjustment and change of the specific form of the cleaning agent stored in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0097] Preferably, the cleaning agent stored in the first cleaning agent storage member 331 and the second cleaning agent storage member 332 is in powder form.

[0098] It should be noted that in actual application, the skilled in the art can set a check structure in the cleaning agent storage member 33 to prevent the water in the water inlet main line 1 from entering the cleaning agent storage member 33 through the cleaning outlet 302, or a one-way valve 34 can be set on the cleaning pipeline 31 to prevent the water in the water inlet main line 1 from entering the cleaning agent storage member 33 through the cleaning outlet 302, or a control valve can also be set on the cleaning pipeline 31 to prevent the water in the water inlet main line 1 from entering the cleaning agent storage member 33 through the cleaning outlet 302, etc., and 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.

[0099] Preferably, as shown in Figures 1 to 6 , a one-way valve 34 is arranged on the cleaning pipeline 31, and the one-way valve 34 is located at the downstream end of the cleaning agent storage member 33 and can prevent the water in the water inlet main line 1 from entering the cleaning agent storage member 33 through the cleaning outlet 302.

[0100] By setting the one-way valve 34, 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 33, so as to avoid that the cleaning agent is dissolved and enters the reverse osmosis membrane filter core 2 in the normal water production mode, and at the same time, since the cost of the one-way valve 34 is obviously lower than that of the control valve, compared with the form of setting the control valve on the cleaning pipeline 31, by setting the one-way valve 34 to prevent the water in the water inlet main line 1 from entering the cleaning agent storage member 33 through the cleaning outlet 302, the cost of the water purification equipment can be further saved.

[0101] Specifically, as shown in Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the first cleaning pipe 311 is provided with a first one-way valve 341, and the second cleaning pipe 312 is provided with a second one-way valve 342.

[0102] Preferably, the water purification device further comprises a third one-way valve 343, which is arranged between the cleaning outlet 302 and the circulating pump 62 and can resist the water pressure in the water inlet main line 1.

[0103] When the water purification device is in the normal water production mode, the water pressure in the water inlet main line 1 is high. By arranging the third one-way valve 343, 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 high water pressure can be avoided.

[0104] Preferably, as shown, Figures 1 to 6 The water purification device 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.

[0105] By such an arrangement, when the reverse osmosis membrane filter core 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 core 2 by controlling the water inlet valve 11, so as to avoid diluting the cleaning liquid entering the reverse osmosis membrane filter core 2.

[0106] It should be noted that in actual application, the cleaning inlet 301 is not limited to being arranged at the upstream end of the water inlet valve 11, and the cleaning outlet 302 is not limited to being arranged at the downstream end of the water inlet valve 11. For example, the cleaning inlet 301 and the cleaning outlet 302 can 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 ranges 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.

[0107] 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 ranges of the present application, and should be included in the protection scope of the present application.

[0108] Preferably, as shown, Figures 1 to 6 The booster pump 12 is located at the upstream end of the water inlet valve 11, and the cleaning inlet 301 is located between the booster pump 12 and the water inlet valve 11.

[0109] By setting the booster pump 12 at the upstream end of the water inlet valve 11, setting the cleaning inlet 301 between the booster pump 12 and the water inlet valve 11, the cleaning inlet 301 can be located at the downstream end of the booster pump 12, so that the water in the water inlet main line 1 can be pumped into the cleaning assembly and delivered into the reverse osmosis membrane filter element 2 through the booster pump 12, improving the cleaning efficiency and cleaning effect.

[0110] Preferably, as shown in the drawings, the water purification equipment further comprises a pure water component 51, and the pure water end of the reverse osmosis membrane filter element 2 is communicated with the pure water component 51 through a pure water outlet pipe 5. Figures 1 to 6

[0111] It should be noted that in actual application, the specific setting type of the pure water component 51 is not limited by those skilled in the art, as long as the water at the pure water end of the reverse osmosis membrane filter element 2 can be output for users to drink, for example, the pure water component 51 can be set as a pure water tank, the pure water filtered by the reverse osmosis membrane filter element 2 is directly delivered into the pure water tank for users to drink, or the pure water component 51 can be set as a post-filter, the pure water filtered by the reverse osmosis membrane filter element 2 is delivered into the post-filter to improve the taste before being drunk by users, or the pure water component 51 can be set as a water outlet component (water outlet nozzle or faucet), the pure water filtered by the reverse osmosis membrane filter element 2 is directly delivered from the water outlet component (water outlet nozzle or faucet), and the like, and such adjustment and change of the specific setting type of the pure water component 51 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0112] Preferably, as shown in the drawings, the water purification equipment further comprises a pure water component 51, and the pure water end of the reverse osmosis membrane filter element 2 is communicated with the pure water component 51 through a pure water outlet pipe 5. Figures 1 to 6

[0113] It should be noted that when the water purification equipment cleans the reverse osmosis membrane filter element 2, the cleaning liquid in the reverse osmosis membrane filter element 2 cannot be discharged to the wastewater outlet of the water purification equipment through the wastewater outlet pipe 21, for example, the wastewater valve 211 can be set to have a shut-off function, or a valve can be arranged on the reverse osmosis membrane filter element 2, and the valve is closed to prevent the cleaning liquid in the reverse osmosis membrane filter element 2 from being discharged through the wastewater outlet pipe 21, and the like, and such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0114] ​​It should be further explained that, in practical 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.

[0115] Exemplarily, the water purification device is a water purifier.

[0116] 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 agent storage member for storing a cleaning agent and a cleaning outlet, the cleaning assembly being configured to dissolve the cleaning agent to form a cleaning liquid in the cleaning agent storage member, the cleaning outlet being configured to communicate with a water inlet end of the reverse osmosis membrane filter core to deliver the cleaning liquid into the reverse osmosis membrane filter core; and a filter member disposed between the cleaning agent storage member and the reverse osmosis membrane filter core, the filter member being configured to allow liquid in the cleaning agent storage member to enter into the reverse osmosis membrane filter core and prevent solid in the cleaning agent storage member from entering into the reverse osmosis membrane filter core.

2. The water purification apparatus according to claim 1, characterized by The filter member comprises a filter box and a filter element disposed in the filter box, the filter element being configured to allow liquid in the cleaning liquid to flow in a water flow direction and prevent solid in the cleaning liquid from passing in the water flow direction.

3. The water purification apparatus according to claim 2, characterized by The filter element is a filter screen plate or a filter screen bag.

4. The water purification apparatus according to claim 1, characterized by The water purification device further comprises a water inlet main line, the water inlet main line being in communication with the water inlet end of the reverse osmosis membrane filter core, the cleaning outlet being in communication with the water inlet main line, the cleaning assembly having a cleaning pipeline, the cleaning agent storage member being disposed on the cleaning pipeline, wherein the filter member is disposed on the cleaning pipeline and located at a downstream end of the cleaning agent storage member; or the filter member is disposed on the water inlet main line and located between the cleaning outlet and the reverse osmosis membrane filter core. The cleaning assembly further has a cleaning inlet, the cleaning inlet being in communication with the water inlet main line to allow water in the cleaning main line to enter into the cleaning agent storage member to dissolve the cleaning agent and form the cleaning liquid.

5. The water purification apparatus according to claim 4, characterized by The water purification device further comprises a pre-filter unit, a water outlet end of the pre-filter unit being in communication with the water inlet main line, the cleaning inlet being located at a downstream end of the pre-filter unit.

6. The water purification apparatus according to claim 5, characterized by The water purification device further comprises a circulation pipeline, a first end of the circulation pipeline being in communication with a waste water end of the reverse osmosis membrane filter core, a second end of the circulation pipeline being in communication with the cleaning assembly to form a cleaning loop in which the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core and the waste water end of the reverse osmosis membrane filter core are sequentially communicated, the water purification device being configured to make the cleaning liquid circulate in the cleaning loop.

7. The water purification apparatus of claim 1, wherein The water purification device further comprises a circulation pump and a booster pump, the cleaning outlet being in communication with the water inlet main line, the booster pump being disposed on the water inlet main line and located at an upstream end of the cleaning outlet, the circulation pump being disposed on the cleaning loop and configured to drive the cleaning liquid to circulate in the cleaning loop.

8. The water purification apparatus according to claim 7, characterized by The water purification device further comprises a waste water outlet pipeline, wherein the waste water outlet pipeline is in communication with the waste water end of the reverse osmosis membrane filter core, the first end of the circulation pipeline is in communication with the waste water outlet pipeline.

9. The water purification apparatus according to claim 7, characterized by ​ Alternatively, the water purification device further comprises a waste water outlet pipe and a reversing valve, a waste water end of the reverse osmosis membrane filter core is in communication with a first interface of the reversing valve, the waste water outlet pipe is in communication with a second interface of the reversing valve, a first end of the circulation pipe is in communication with a third interface of the reversing valve, and the first interface of the reversing valve is selectively in communication with the second interface or the third interface.

10. The water purification apparatus according to any one of claims 1 to 9, characterized by The cleaning assembly comprises a cleaning pipeline, a cleaning valve and a cleaning agent storage member arranged on the cleaning pipeline, two ends of the cleaning pipeline form the cleaning inlet and the cleaning outlet respectively, and the cleaning agent storage member is located at a downstream end of the cleaning valve and is used for storing an acidic cleaning agent or an alkaline cleaning agent. Alternatively, the cleaning assembly comprises at least two cleaning pipelines arranged in parallel, a cleaning valve and a cleaning agent storage member arranged on each of the cleaning pipelines, first ends of the cleaning pipelines are merged and form the cleaning inlet, second ends of the cleaning pipelines are merged and form the cleaning outlet, the cleaning agent storage members are located at downstream ends of the cleaning valves, and the cleaning agent storage members on each of the cleaning pipelines are used for storing different types of cleaning agents.

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