Water purification equipment

Abstract

The utility model relates to the technical field of water purification, particularly provides water purification equipment, and aims to solve the problem of poor user experience caused by complex pipeline connection, high cost of a water purifier and poor cleaning effect of existing water purification equipment. The water purification equipment comprises a reverse osmosis membrane filter element, a front filter element and a first cleaning pipe, a storage cavity for storing a first cleaning agent is formed in the front filter element, the water outlet end of the front filter element is communicated with the water inlet end of the reverse osmosis membrane filter element, and the water inlet end of the first cleaning pipe is communicated with the wastewater end of the reverse osmosis membrane filter element; the water outlet end of the first cleaning pipe is communicated with the upstream end of the reverse osmosis membrane filter element; and the water purification equipment can drive liquid in the first cleaning loop to circularly flow. According to the water purification equipment, the cleaning agent can be arranged in the front filter element, and the cleaning agent storage component can be prevented from being connected to the water inlet main path through a pipeline and a valve, so that the use quantity of the pipeline and the valve is reduced, the pipeline connection of the water purification equipment is simplified, and the cleaning effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification technical field, and 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 purification machine, pipeline 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. If the reverse osmosis membrane filter element continues to be used for a long time, the water quality of the water purification equipment will be reduced. If the reverse osmosis membrane filter element is frequently replaced, the use cost of the water purification equipment will be higher due to the high cost of replacing the reverse osmosis membrane filter element.

[0004] In the prior art, cleaning the reverse osmosis membrane filter element with a cleaning agent can prolong the service life of the reverse osmosis membrane filter element. However, the existing water purification equipment usually has an external cleaning module, that is, the cleaning module is connected to the water inlet main road through a pipeline and a valve, which will result in complex pipeline connection and high cost of the water purification equipment. In addition, the cleaning effect of the reverse osmosis membrane filter element by soaking in the cleaning agent is poor, which affects the user's experience. UTILITY MODEL CONTENTS

[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 has complex pipeline connection, high cost of water purification machine and poor cleaning effect, 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 pre-filter element having a storage cavity therein, the storage cavity being used for storing a first cleaning agent, a water outlet end of the pre-filter element being communicated with a water inlet end of the reverse osmosis membrane filter element, so as to deliver the first cleaning agent into the reverse osmosis membrane filter element; and a first cleaning pipe, a water inlet end of the first cleaning pipe being communicated with a waste water end of the reverse osmosis membrane filter element, a water outlet end of the first cleaning pipe being communicated with an upstream end of the reverse osmosis membrane filter element and being capable of delivering liquid from the waste water end of the reverse osmosis membrane filter element to the water inlet end of the reverse osmosis membrane filter element, so that the water inlet end of the reverse osmosis membrane filter element, the waste water end of the reverse osmosis membrane filter element and the first cleaning pipe are sequentially communicated to form a first cleaning loop; wherein the water purification equipment is arranged to drive the liquid in the first cleaning loop to circulate.

[0007] In the preferred technical scheme of the water purification device, the water purification device further comprises a water inlet main path, a first end of the water inlet main path is communicated with a water outlet end of the pre-filter, a second end of the water inlet main path is communicated with a water inlet end of the reverse osmosis membrane filter, a water outlet end of the first cleaning pipe is communicated with the water inlet main path, the water inlet end of the reverse osmosis membrane filter, a waste water end in the reverse osmosis membrane filter, the first cleaning pipe and the water inlet main path are sequentially communicated to form the first cleaning loop; or, the water outlet end of the first cleaning pipe is communicated with an upstream end of the pre-filter, the water inlet end of the reverse osmosis membrane filter, the waste water end in the reverse osmosis membrane filter, the first cleaning pipe and the pre-filter are sequentially communicated to form the first cleaning loop, and the pre-filter can intercept dirt in the first cleaning loop to prevent the dirt from entering the reverse osmosis membrane filter.

[0008] In the preferred technical scheme of the water purification device, the pre-filter comprises a shell, a first filter material arranged in the shell and a second filter material arranged in the first filter material, a filter channel is formed between the shell and the first filter material, the storage cavity is formed in the second filter material, a water inlet of the pre-filter is communicated with the filter channel, and a water outlet of the pre-filter is communicated with the storage cavity, and the first filter material can intercept dirt in the first cleaning loop into the filter channel.

[0009] In the preferred technical scheme of the water purification device, the water purification device further comprises a waste water outlet pipe and a first cleaning valve, a water inlet end of the first cleaning pipe is communicated with the waste water outlet pipe, and the first cleaning valve is arranged on the first cleaning pipe and is used for controlling opening and closing of the first cleaning pipe; or, the water purification device further comprises a waste water outlet pipe and a reversing valve, a first interface of the reversing valve is communicated with a waste water end of the reverse osmosis membrane filter, a second interface of the reversing valve is communicated with the waste water outlet pipe, and a third interface of the reversing valve is communicated with a water inlet end of the first cleaning pipe, and the first interface can be selectively communicated with the second interface or the third interface.

[0010] In the preferred technical scheme of the water purification device, the water purification device further comprises a second cleaning pipe, a second cleaning valve and a second cleaning agent storage member, the second cleaning agent storage member is used for storing a second cleaning agent, the second cleaning pipe can deliver the second cleaning agent in the second cleaning agent storage member into the reverse osmosis membrane filter, and the second cleaning valve is arranged on the second cleaning pipe and is used for controlling opening and closing of the second cleaning pipe.

[0011] In the preferred technical scheme of the water purifying device, the water inlet end of the second cleaning pipe is communicated with the wastewater end of the reverse osmosis membrane filter core, the water outlet end of the second cleaning pipe is communicated with the upstream end of the reverse osmosis membrane filter core and can deliver the second cleaning liquid into the reverse osmosis membrane filter core, the water inlet end of the reverse osmosis membrane filter core, the wastewater end of the reverse osmosis membrane filter core and the second cleaning pipe are sequentially communicated to form a second cleaning loop, the second cleaning agent storage member is arranged on the second cleaning pipe, and the water purifying device is further arranged to be capable of driving the liquid in the second cleaning loop to circulate and flow.

[0012] In the preferred technical scheme of the water purifying device, the water purifying device further comprises a first check member arranged on the first cleaning pipe, the first check member is located at the downstream end of the first cleaning agent storage member and can prevent the water at the water outlet end of the first cleaning pipe from flowing reversely into the first cleaning agent storage member, and / or the water purifying device further comprises a second check member arranged on the second cleaning pipe, the second check member is located at the downstream end of the second cleaning agent storage member and can prevent the water at the water outlet end of the second cleaning pipe from flowing reversely into the second cleaning agent storage member.

[0013] In the preferred technical scheme of the water purifying device, the water purifying device comprises a booster pump, the booster pump can drive the liquid in the first cleaning loop and / or the second cleaning loop to circulate and flow, or the water purifying device further comprises a circulating pump, the circulating pump is arranged on the first cleaning loop and is used to drive the liquid in the first cleaning loop to circulate and flow.

[0014] In the preferred technical scheme of the water purifying device, the booster pump at least comprises a first voltage gear and a second voltage gear, the booster pump has a gear adjusting module, the gear adjusting module is used to adjust the voltage gear of the booster pump to the second voltage gear when the water purifying device is in a cleaning mode, and the voltage value of the second voltage gear is lower than the voltage value of the first voltage gear.

[0015] In the preferred technical scheme of the water purifying device, the water purifying device further comprises a backflow pipe and a backflow valve arranged on the backflow pipe, one end of the backflow pipe is communicated with the pure water end of the reverse osmosis membrane filter core, the other end of the backflow pipe is communicated with the water inlet end of the reverse osmosis membrane filter core, and the backflow valve is arranged on the backflow pipe and is used to control the opening and closing of the backflow pipe, or the water purifying device further comprises a drain pipe and a drain valve arranged on the drain pipe, one end of the drain pipe is communicated with the pure water end of the reverse osmosis membrane filter core, the other end of the drain pipe is communicated with the wastewater outlet pipe of the water purifying device, and the drain valve is arranged on the drain pipe and is used to control the opening and closing of the drain pipe.

[0016] In the case of adopting the above preferred technical scheme, by setting the cleaning agent in the pre-filter element, the cleaning agent storage member can be connected to the water inlet end or the wastewater end of the reverse osmosis membrane filter element through the pipeline and the valve, thereby reducing the number of pipelines and valves used, simplifying the pipeline connection of the water purification equipment, reducing the use cost of the water purification equipment, and improving the user experience. In addition, by setting the cleaning agent in the pre-filter element, the installation space of the cleaning agent storage member can be reduced, thereby reducing the volume of the water purification equipment and saving the installation space of the water purification equipment, further improving the user experience. At the same time, by setting the first cleaning pipe, a first cleaning loop can be formed, so that the first cleaning agent circulates and flows in the first cleaning loop, which is more helpful to clean the dirt on the reverse osmosis membrane filter element and improve the cleaning effect of the reverse osmosis membrane filter element.

[0017] Further, by setting the water outlet end of the first cleaning pipe to communicate with the upstream end of the pre-filter element, a first cleaning loop can be formed between the water inlet end of the reverse osmosis membrane filter element, the wastewater end of the reverse osmosis membrane filter element, the first cleaning pipe and the pre-filter element. When the cleaning liquid flows through the pre-filter element, the pre-filter element can filter out the dirt in the cleaning liquid, thereby avoiding the dirt from entering the reverse osmosis membrane filter element again and avoiding secondary pollution to the reverse osmosis membrane filter element, thereby improving the cleaning effect of the reverse osmosis membrane filter element.

[0018] Further, by setting the second cleaning pipe and the second cleaning agent storage member, multiple cleaning agents can be used to clean the reverse osmosis membrane filter element, thereby making the cleaning of the reverse osmosis membrane filter element more thorough and further improving the user experience.

[0019] Further, compared with the mode that the water inlet end of the second cleaning pipe and the water outlet end of the second cleaning pipe both communicate with the water inlet main path, by setting the water inlet end of the second cleaning pipe to communicate with the wastewater end of the reverse osmosis membrane filter element and setting the water outlet end of the second cleaning pipe to communicate with the upstream end of the reverse osmosis membrane filter element, the second cleaning pipe can be directly connected to the water inlet end of the reverse osmosis membrane filter element and the wastewater end of the reverse osmosis membrane filter element in sequence to form a second cleaning loop, thereby forming the second cleaning loop without another pipeline, thereby improving the cleaning effect of the second cleaning agent on the reverse osmosis membrane filter element.

[0020] Further, by adopting the booster pump to drive the liquid in the first cleaning circuit and / or the second cleaning circuit to circulate, the circulation pump can be avoided, so that the cost of the water purification equipment can be further reduced, the pipeline connection in the water purification equipment is further simplified, and the volume of the water purification equipment is reduced; by setting the booster pump to include the first voltage gear and the second voltage gear, when the water purification equipment is in the cleaning mode, the booster pump can be operated at the lower voltage gear, so that the water pressure of the cleaning liquid in the circulation process is low, on the one hand, the cleaning liquid can be prevented from penetrating into the pure water end of the reverse osmosis membrane filter element, and the chemical residue is reduced, and on the other hand, the diaphragm in the booster pump is also prevented from being damaged by the cleaning liquid.

[0021] Further, by setting the circulation pump, when the cleaning agent is needed to clean the reverse osmosis membrane filter element, the liquid in the first cleaning circuit and / or the second cleaning circuit is driven to circulate by the circulation pump, so that the booster pump is avoided to be driven, so that the diaphragm in the cleaning liquid is avoided to be damaged, and the service life of the booster pump is prolonged; in addition, the liquid in the first cleaning circuit and / or the second cleaning circuit is driven to circulate by the circulation pump, the pressureless driving of the cleaning liquid circulation can be realized, the amount of the cleaning agent penetrating into the pure water end of the reverse osmosis membrane filter element is reduced, and the residue of the cleaning agent in the reverse osmosis membrane filter element is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] The preferred embodiments of the utility model will be described below in combination with the drawings, in which:

[0023] Figure 1 is the structural schematic view of the water purification equipment of the embodiment one of the utility model;

[0024] Figure 2 is the structural schematic view of the water purification equipment of the embodiment two of the utility model;

[0025] Figure 3 is the structural schematic view of the water purification equipment of the embodiment three of the utility model;

[0026] Figure 4 is the structural schematic view of the water purification equipment of the embodiment four of the utility model;

[0027] Figure 5 is the structural schematic view of the water purification equipment of the embodiment five of the utility model;

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

[0029] Figure 7 is the structural schematic view of the water purification equipment of the embodiment seven of the utility model;

[0030] Figure 8This is a schematic diagram of the structure of the pre-filter element of this utility model.

[0031] List of reference numerals in the attached diagram:

[0032] 1. Main water inlet pipe; 11. Inlet valve; 12. Booster pump; 2. Reverse osmosis membrane filter element; 21. Wastewater outlet pipe; 211. Wastewater valve; 22. Drain pipe; 221. Drain valve; 23. Return pipe; 231. Return valve; 311. First cleaning pipe; 312. First cleaning valve; 313. First check valve; 321. Second cleaning pipe; 322. Second cleaning valve; 323. Second cleaning agent storage component; 324. Second check valve; 4. Pre-filter element; 41. Housing; 42. First filter media; 43. Second filter media; 44. Filtration channel; 45. Storage chamber; 46. Inlet; 47. Outlet; 5. Pure water outlet pipe; 51. Pure water usage component; 6. Circulation pump; 7. Flow control component; 8. Reversing valve; 9. Dirt. Detailed Implementation

[0033] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0034] It should be noted that in the description of this utility model, terms such as "upper," "lower," "inner," and "outer," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] like Figures 1 to 7 As shown, the water purification device of this utility model includes a reverse osmosis membrane filter element 2, a pre-filter element 4, and a first cleaning pipe 311. The pre-filter element 4 has a storage chamber 45 for storing a first cleaning agent. The water outlet of the pre-filter element 4 is connected to the water inlet of the reverse osmosis membrane filter element 2 so as to deliver the first cleaning agent into the reverse osmosis membrane filter element 2.

[0037] The water inlet end of the first cleaning pipe 311 is communicated with the wastewater end of the reverse osmosis membrane filter core 2, the water outlet end of the first cleaning pipe 311 is communicated with the upstream end of the reverse osmosis membrane filter core 2 and can transport the liquid at the wastewater end of the reverse osmosis membrane filter core 2 to the water inlet end of the reverse osmosis membrane filter core 2, so that the water inlet end of the reverse osmosis membrane filter core 2, the wastewater end of the reverse osmosis membrane filter core 2 and the first cleaning pipe 311 are sequentially communicated to form a first cleaning loop, and the water purification equipment is arranged to be capable of driving the liquid in the first cleaning loop to circulate and flow.

[0038] By such an arrangement, that is, by arranging the cleaning agent in the pre-filter core 4, the cleaning agent storage member can be avoided to be connected to the water inlet end or the wastewater end of the reverse osmosis membrane filter core 2 through the pipes and valves, so that the number of pipes and valves used is reduced, the pipe connection of the water purification equipment is simplified, the use cost of the water purification equipment is reduced, and the user experience is improved. In addition, by arranging the cleaning agent in the pre-filter core 4, since the cleaning agent storage member is not needed to be arranged, the installation space of the cleaning agent storage member can be reduced, so that the volume of the water purification equipment is reduced, the installation space of the water purification equipment is saved, and the user experience is further improved. Meanwhile, the water inlet end of the reverse osmosis membrane filter core 2, the wastewater end of the reverse osmosis membrane filter core 2 and the first cleaning pipe 311 can be sequentially communicated to form the first cleaning loop through the first cleaning pipe 311, the cleaning liquid can be circulated and flowed in the first cleaning loop, and the dirt on the reverse osmosis membrane filter core 2 can be more easily cleaned, so that the cleaning effect of the reverse osmosis membrane filter core 2 is improved.

[0039] It should be noted that in actual application, the specific communication mode of the water outlet end of the first cleaning pipe 311 and the upstream end of the reverse osmosis membrane filter core 2 is not limited by those skilled in the art, as long as the cleaning liquid can be transported into the reverse osmosis membrane filter core 2.

[0040] In one specific embodiment, as shown in Figure 2 the water purification equipment further comprises a water inlet main path 1, the first end of the water inlet main path 1 is communicated with the water outlet end of the pre-filter core 4, the second end of the water inlet main path 1 is communicated with the water inlet end of the reverse osmosis membrane filter core 2, the water outlet end of the first cleaning pipe 311 is communicated with the water inlet main path 1, and the water inlet end of the reverse osmosis membrane filter core 2, the wastewater end of the reverse osmosis membrane filter core 2, the first cleaning pipe 311 and the water inlet main path 1 are sequentially communicated to form the first cleaning loop.

[0041] When the reverse osmosis membrane filter core 2 needs to be cleaned, after the water source enters the pre-filter core 4, the first cleaning agent in the pre-filter core 4 can be dissolved to form the first cleaning liquid, the first cleaning liquid can be transported into the reverse osmosis membrane filter core 2 through the water inlet main path 1, and the first cleaning liquid can be circulated and flowed in the first cleaning loop, so that the reverse osmosis membrane filter core 2 is cleaned.

[0042] In another specific embodiment, as shown in Figure 1As shown, the water outlet end of the first cleaning pipe 311 is communicated with the upstream end of the pre-filter 4, the water inlet end of the reverse osmosis membrane filter 2, the wastewater end of the reverse osmosis membrane filter 2, the first cleaning pipe 311 and the pre-filter 4 are sequentially communicated to form a first cleaning loop, and the pre-filter 4 can intercept the dirt 9 in the first cleaning loop to prevent the dirt 9 from entering the reverse osmosis membrane filter 2.

[0043] By setting the water outlet end of the first cleaning pipe 311 to be communicated with the upstream end of the pre-filter 4, the water inlet end of the reverse osmosis membrane filter 2, the wastewater end of the reverse osmosis membrane filter 2, the first cleaning pipe 311 and the pre-filter 4 can form a first cleaning loop, and when the cleaning liquid flows through the pre-filter 4, the pre-filter 4 can filter out the dirt 9 in the cleaning liquid, thereby avoiding the dirt 9 from entering the reverse osmosis membrane filter 2 again, avoiding secondary pollution to the reverse osmosis membrane filter 2, and improving the cleaning effect on the reverse osmosis membrane filter 2.

[0044] It should be noted that in actual application, the specific setting type of the pre-filter 4 is not limited by those skilled in the art, as long as it can intercept the dirt 9 in the first cleaning loop to prevent the dirt 9 from entering the reverse osmosis membrane filter 2.

[0045] In one specific embodiment, the pre-filter 4 includes a shell 41 and a first filter material 42 (not shown in the figure) arranged in the shell 41, a filtering channel 44 is formed between the shell 41 and the first filter material 42, a storage cavity 45 is formed on the inner side of the first filter material 42, a water inlet 46 of the pre-filter 4 is communicated with the filtering channel 44, and a water outlet 47 of the pre-filter 4 is communicated with the storage cavity 45. In the case that the first cleaning liquid circulates in the first cleaning loop, the first filter material 42 can intercept the dirt 9 in the first cleaning loop into the filtering channel 44.

[0046] In another specific embodiment, the pre-filter 4 includes a shell 41 and a first filter material 42 (not shown in the figure) arranged in the shell 41, a storage cavity 45 is formed between the shell 41 and the first filter material 42, a filtering channel 44 is formed on the inner side of the first filter material 42, a water inlet 46 of the pre-filter 4 is communicated with the filtering channel 44, and a water outlet 47 of the pre-filter 4 is communicated with the storage cavity 45. In the case that the first cleaning liquid circulates in the first cleaning loop, the first filter material 42 can intercept the dirt 9 in the first cleaning loop into the filtering channel 44.

[0047] In another possible embodiment, as Figure 8As shown, the pre-filter core 4 comprises a shell 41, a first filter material 42 arranged in the shell 41, and a second filter material 43 arranged inside the first filter material 42, a filter passage 44 is formed between the shell 41 and the first filter material 42, a storage cavity 45 is formed inside the second filter material 43, a water inlet 46 of the pre-filter core 4 is communicated with the filter passage 44, and a water outlet 47 of the pre-filter core 4 is communicated with the storage cavity 45, and the first filter material 42 can intercept the dirt 9 in the first cleaning circuit into the filter passage 44 under the condition that the first cleaning liquid circulates in the first cleaning circuit.

[0048] Preferably, as Figure 8 As shown, the pre-filter core 4 comprises a shell 41, a first filter material 42 arranged in the shell 41, and a second filter material 43 arranged inside the first filter material 42, a filter passage 44 is formed between the shell 41 and the first filter material 42, a storage cavity 45 is formed inside the second filter material 43, a water inlet 46 of the pre-filter core 4 is communicated with the filter passage 44, and a water outlet 47 of the pre-filter core 4 is communicated with the storage cavity 45, and the first filter material 42 can intercept the dirt 9 in the first cleaning circuit into the filter passage 44 under the condition that the first cleaning liquid circulates in the first cleaning circuit.

[0049] Through the arrangement, when the reverse osmosis membrane filter core 2 needs to be cleaned, the water source enters the pre-filter core 4, the first cleaning agent in the storage cavity 45 is dissolved to form the first cleaning liquid, the first cleaning liquid flows out of the pre-filter core 4 and enters the reverse osmosis membrane filter core 2, the first cleaning liquid cleans the dirt 9 attached to the reverse osmosis membrane filter core 2, the dirt 9 flows from the waste water end of the reverse osmosis membrane filter core 2 to the pre-filter core 4 again, enters the filter passage 44 through the water inlet 46 of the pre-filter core 4, the first filter material 42 intercepts the dirt 9, the dirt 9 stays in the filter passage 44, the cleaning liquid flows to the storage cavity 45 through the first filter material 42 and is then transported to the reverse osmosis membrane filter core 2, so that the dirt 9 is prevented from entering the reverse osmosis membrane filter core 2 again to cause secondary pollution to the reverse osmosis membrane filter core 2, and the reverse osmosis membrane filter core 2 is effectively cleaned through multiple cycles.

[0050] It should be noted that the specific setting type of the first filter material 42 is not limited in the utility model, for example, the first filter material 42 can be PP cotton, or the first filter material 42 can be activated carbon, or the first filter material 42 can be any other possible filter material, and the like, and adjustment and change of the specific setting type of the first filter material 42 do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0051] It should be further noted that the specific setting type of the second filter material 43 is not limited in the utility model, for example, the second filter material 43 can be a carbon rod, or the second filter material 43 can be a ceramic, or the second filter material 43 can also be any other possible filter material, and the like, and the adjustment and change of the specific setting type of the second filter material 43 do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0052] Preferably, the first filter material 42 is PP cotton, and the second filter material 43 is a carbon rod.

[0053] It should be noted that in actual application, the specific communication mode of the water inlet end of the first cleaning pipe 311 and the wastewater end of the reverse osmosis membrane filter core 2 is not limited in the utility model, as long as the water inlet end of the first cleaning pipe 311 and the wastewater end of the reverse osmosis membrane filter core 2 can be communicated.

[0054] In one specific embodiment, as shown in Figure 1 and Figure 2 , the water purification equipment further comprises a wastewater outlet pipe 21 and a first cleaning valve 312, the water inlet end of the first cleaning pipe 311 is communicated with the wastewater outlet pipe 21, and the first cleaning valve 312 is arranged on the first cleaning pipe 311 and is used for controlling the on-off of the first cleaning pipe 311.

[0055] In another specific embodiment, as shown in Figure 3 , the water purification equipment further comprises a wastewater outlet pipe 21 and a reversing valve 8, a first interface of the reversing valve 8 is communicated with the wastewater end of the reverse osmosis membrane filter core 2, a second interface of the reversing valve 8 is communicated with the wastewater outlet pipe 21, and a third interface of the reversing valve 8 is communicated with the water inlet end of the first cleaning pipe 311, wherein the first interface can be selectively communicated with the second interface or the third interface.

[0056] Preferably, as shown in Figure 1 and Figure 2 , the water purification equipment further comprises a wastewater outlet pipe 21 and a first cleaning valve 312, the water inlet end of the first cleaning pipe 311 is communicated with the wastewater outlet pipe 21, and the first cleaning valve 312 is arranged on the first cleaning pipe 311 and is used for controlling the on-off of the first cleaning pipe 311.

[0057] Through such a setting, compared with the form of setting the reversing valve 8, by setting the first cleaning valve 312 on the first cleaning pipe 311, the cost of the water purification equipment can be further reduced.

[0058] Preferably, as shown in Figures 4 to 6As shown, the water purification equipment further comprises a second cleaning pipe 321, a second cleaning valve 322 and a second cleaning agent storage member 323, the second cleaning agent storage member 323 is used for storing a second cleaning agent, the second cleaning valve 322 is arranged on the second cleaning pipe 321 and is used for controlling the on-off of the second cleaning pipe 321, and the second cleaning pipe 321 can transport the second cleaning liquid in the second cleaning agent storage member 323 into the reverse osmosis membrane filter core 2, so that the reverse osmosis membrane filter core 2 is cleaned by using the second cleaning agent.

[0059] Through the arrangement of the second cleaning pipe 321 and the second cleaning agent storage member 323, the reverse osmosis membrane filter core 2 can be cleaned by using multiple cleaning agents, so that the cleaning of the reverse osmosis membrane filter core 2 is more thorough, and the use experience of the user is further improved.

[0060] It should be noted that the specific arrangement type of the second cleaning pipe 321 is not limited in the utility model, as long as the second cleaning liquid in the second cleaning agent storage member 323 can be transported into the reverse osmosis membrane filter core 2.

[0061] In one specific embodiment, the water inlet end of the second cleaning pipe 321 is arranged in communication with the second cleaning agent storage member 323 (not shown in the figure), the water outlet end of the second cleaning pipe 321 is arranged in communication with the upstream end of the reverse osmosis membrane filter core 2, the second cleaning liquid in the second cleaning agent storage member 323 is directly transported into the reverse osmosis membrane filter core 2, and then the second cleaning liquid is circulated and flowed in the first cleaning loop to clean the reverse osmosis membrane filter core 2.

[0062] In another specific embodiment, as shown in Figure 4 and Figure 5 the water inlet end of the second cleaning pipe 321 is arranged in communication with the wastewater end of the reverse osmosis membrane filter core 2, the water outlet end of the second cleaning pipe 321 is in communication with the upstream end of the reverse osmosis membrane filter core 2 and can transport the second cleaning liquid into the reverse osmosis membrane filter core 2, the water inlet end of the reverse osmosis membrane filter core 2, the wastewater end of the reverse osmosis membrane filter core 2 and the second cleaning pipe 321 are sequentially communicated to form a second cleaning loop, the second cleaning agent storage member 323 is arranged on the second cleaning pipe 321, and the water purification equipment is arranged to be capable of driving the liquid in the second cleaning loop to circulate and flow.

[0063] It should be noted that in the prior art, the mode that the water inlet end of the second cleaning pipe 321 and the water outlet end of the second cleaning pipe 321 are both communicated with the water inlet main line 1 cannot form a cleaning loop, that is, the second cleaning agent cannot circulate and flow, resulting in poor cleaning effect of the second cleaning agent on the reverse osmosis membrane filter core 2. In order to improve the cleaning effect of the second cleaning agent on the reverse osmosis membrane filter core 2, a circulating pipe needs to be additionally arranged to form a cleaning loop for the circulation of the second cleaning agent, resulting in complex pipe connection. Therefore, compared with the mode that the water inlet end of the second cleaning pipe 321 and the water outlet end of the second cleaning pipe 321 are both communicated with the water inlet main line 1, the water inlet end of the second cleaning pipe 321 is arranged to be communicated with the wastewater end of the reverse osmosis membrane filter core 2, and the water outlet end of the second cleaning pipe 321 is arranged to be communicated with the upstream end of the reverse osmosis membrane filter core 2, so that the second cleaning pipe 321 can be directly communicated with the water inlet end of the reverse osmosis membrane filter core 2 and the water outlet end of the reverse osmosis membrane filter core 2 in sequence to form a second cleaning loop, thereby forming the second cleaning loop without additionally arranging a pipe line, and improving the cleaning effect of the second cleaning agent on the reverse osmosis membrane filter core 2.

[0064] It should be noted that in actual application, the water inlet end of the second cleaning pipe 321 can be directly communicated with the wastewater end of the reverse osmosis membrane filter core 2, or the water inlet end of the second cleaning pipe 321 can be arranged to be communicated with the wastewater outlet pipe 21 so that the water inlet end of the second cleaning pipe 321 is communicated with the wastewater end of the reverse osmosis membrane filter core 2, or the water inlet end of the second cleaning pipe 321 can be arranged to be communicated with the first cleaning pipe 311 so that the water inlet end of the second cleaning pipe 321 is communicated with the wastewater end of the reverse osmosis membrane filter core 2, and the like. The adjustment and change of the specific communication mode of the water inlet end of the second cleaning pipe 321 and the wastewater end of the reverse osmosis membrane filter core 2 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] Preferably, as shown in FIG. 1, Figure 4 the water inlet end of the second cleaning pipe 321 is communicated with the water inlet end of the first cleaning pipe 311.

[0066] It should be noted that in actual application, the outlet end of the second cleaning pipe 321 can be directly communicated with the inlet end of the reverse osmosis membrane filter core 2, or the outlet end of the second cleaning pipe 321 can be communicated with the inlet main line 1, so that the outlet end of the second cleaning pipe 321 is communicated with the inlet end of the reverse osmosis membrane filter core 2, or the outlet end of the second cleaning pipe 321 can be communicated with the upstream end of the pre-filter core 4, so that the outlet end of the second cleaning pipe 321 is communicated with the inlet end of the reverse osmosis membrane filter core 2, and the like. The adjustment and change of the specific communication mode of the outlet end of the second cleaning pipe 321 and the inlet end of the reverse osmosis membrane filter core 2 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0067] Preferably, as shown in the figure, the outlet end of the second cleaning pipe 321 is communicated with the upstream end of the pre-filter core 4. Figure 6

[0068] Through such a setting, when the second cleaning agent is used to clean the reverse osmosis membrane filter core 2, the pre-filter core 4 can intercept the dirt 9 cleaned down, avoid the dirt 9 from entering the reverse osmosis membrane filter core 2 again to cause secondary pollution to the reverse osmosis membrane filter core 2, and improve the cleaning effect.

[0069] It should be noted that in actual application, the specific setting type of the first cleaning agent is not limited by those skilled in the art, for example, the first cleaning agent can be set as an acidic cleaning agent, or the first cleaning agent can be set as an alkaline cleaning agent, or the first cleaning agent can be set as an oxidizing cleaning agent, and the like. The adjustment and change of the specific setting type of the first cleaning agent do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0070] It should be further noted that in actual application, the specific setting type of the second cleaning agent is not limited by those skilled in the art, for example, the second cleaning agent can be set as an acidic cleaning agent, or the second cleaning agent can be set as an alkaline cleaning agent, or the second cleaning agent can be set as an oxidizing cleaning agent, and the like. The adjustment and change of the specific setting type of the second cleaning agent do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0071] Preferably, the first cleaning agent is an acidic cleaning agent, and the second cleaning agent is an alkaline cleaning agent.

[0072] ​It should be noted that the first cleaning agent is not limited to be set as an acidic cleaning agent, and the second cleaning agent is not limited to be set as an alkaline cleaning agent. For example, the first cleaning agent can be set as an alkaline cleaning agent, and the second cleaning agent can be set as an acidic cleaning agent. 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. Of course, preferably, the first cleaning agent is an acidic cleaning agent, and the second cleaning agent is an alkaline cleaning agent.

[0073] It should be noted that in actual application, a person skilled in the art can first use the first cleaning agent to clean the reverse osmosis membrane filter element 2, then use the second cleaning agent to clean the reverse osmosis membrane filter element 2, or can first use the second cleaning agent to clean the reverse osmosis membrane filter element 2, then use the first cleaning agent to clean the reverse osmosis membrane filter element 2, or can only use the first cleaning agent or the second cleaning agent to clean the reverse osmosis membrane filter element 2, etc. Such adjustment and change of the cleaning sequence of the reverse osmosis membrane filter element 2 do not deviate from the principles and scope of the present application and should be included in the protection scope of the present application.

[0074] Preferably, the first cleaning agent is used to clean the reverse osmosis membrane filter element 2 first, and then the second cleaning agent is used to clean the reverse osmosis membrane filter element 2.

[0075] Preferably, as shown in Figures 1 to 7 The water purification device further comprises a first reverse prevention member 313 arranged on the first cleaning pipe 311, and the first reverse prevention member 313 can prevent water at the upstream end of the reverse osmosis membrane filter element 2 from flowing reversely into the first cleaning pipe 311.

[0076] By arranging the first reverse prevention member 313, water at the upstream end of the reverse osmosis membrane filter element 2 can be prevented from flowing reversely into the first cleaning pipe 311, and when the water purification device is in a normal water production mode or a flushing mode, water in the water inlet main line 1 can be prevented from flowing to the wastewater end of the reverse osmosis membrane filter element 2 through the first cleaning pipe 311.

[0077] Preferably, as shown in Figures 4 to 7 The water purification device further comprises a second reverse prevention member 324 arranged on the second cleaning pipe 321, and the second reverse prevention member 324 is located at the downstream end of the second cleaning agent storage member 323 and can prevent water at the upstream end of the reverse osmosis membrane filter element 2 (such as water in the water inlet main line 1) from flowing reversely into the second cleaning agent storage member 323.

[0078] By setting the second check member 324, the water at the water outlet end of the second cleaning pipe 321 can be prevented from flowing back to the second cleaning agent storage member 323, and when the water purification device is in a normal water production mode or a flushing mode, the first check member 313 can also prevent the water in the water inlet main path 1 from flowing back to the second cleaning agent storage member 323, thereby avoiding that the second cleaning agent is dissolved too early, prolonging the storage time of the second cleaning agent, and further improving the user experience.

[0079] It should be noted that in actual application, the specific setting type of the first check member 313 and the second check member 324 is not limited, for example, the first check member 313 and the second check member 324 can be both set as a one-way valve, or the first check member 313 and the second check member 324 can be both set as a control valve, or one of the first check member 313 and the second check member 324 can be set as a one-way valve and the other can be set as a control valve, 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.

[0080] Preferably, the first check member 313 and the second check member 324 are one-way valves.

[0081] It should be noted that it is not limited to setting the second check member 324 to prevent the cleaning agent from being dissolved too early, for example, a check structure can also be provided on the second cleaning agent storage member 323 to prevent the cleaning agent from being dissolved too early, and the like, and such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, it is preferred to set the second check member 324 to prevent the cleaning agent from being dissolved too early.

[0082] It should be further noted that the present application does not limit the specific driving mode of driving the liquid circulation flow in the first cleaning circuit, for example, the water outlet end of the first cleaning pipe 311 can be set to be located at the upstream end of the booster pump 12, the liquid circulation flow in the first cleaning circuit and / or the second cleaning circuit is driven by the booster pump 12, or a circulating pump 6 can be provided to drive the liquid circulation flow in the first cleaning circuit and / or the second cleaning circuit, or one of the first cleaning circuit and the second cleaning circuit can be driven by the booster pump 12, and the other can be driven by the circulating pump 6, 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.

[0083] The following two embodiments will be introduced.

[0084] Example 1:

[0085] like Figures 1 to 6 As shown, the outlet end of the first cleaning pipe 311 is connected to the upstream end of the booster pump 12, and the booster pump 12 can drive the liquid circulation flow in the first cleaning circuit and / or the second cleaning circuit.

[0086] By using a booster pump 12 to drive the liquid circulation in the first and / or second cleaning circuits, it is possible to avoid the need for a separate circulation pump 6, thereby further reducing the cost of the water purification equipment, further simplifying the piping connections within the water purification equipment, and also reducing the size of the water purification equipment.

[0087] Preferably, the booster pump 12 includes at least a first voltage level and a second voltage level. The booster pump 12 has a level adjustment module, which is used to adjust the voltage level of the booster pump 12 to the second voltage level when the water purification equipment is in the cleaning mode. The voltage value of the second voltage level is lower than the voltage value of the first voltage level.

[0088] With this setting, when the water purifier is in cleaning mode, the booster pump 12 can operate at a lower voltage level, resulting in lower water pressure during the circulation of the cleaning solution. On the one hand, this prevents the cleaning solution from seeping into the pure water end of the reverse osmosis membrane filter element 2, reducing chemical residues. On the other hand, it also prevents the cleaning solution from damaging the diaphragm inside the booster pump 12.

[0089] It should be noted that the gear adjustment module can be installed on the outer casing of the water purifier. When the water purifier is in cleaning mode, the user can adjust the gear of the booster pump 12 by operating the gear adjustment module. Alternatively, the gear adjustment module can be connected to the controller of the water purifier to realize the automatic adjustment of the voltage level of the booster pump 12, etc. Such flexible adjustment and change do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0090] For example, the speed adjustment module is connected to the controller of the water purification equipment to realize the automatic adjustment of the voltage speed of the booster pump 12.

[0091] Example 2:

[0092] like Figure 7 As shown, the water purification equipment also includes a circulation pump 6, which is installed on the first cleaning circuit and / or the second cleaning circuit and is used to drive the liquid circulation flow within the first cleaning circuit and / or the second cleaning circuit.

[0093] When it is necessary to clean the reverse osmosis membrane filter core 2 with the cleaning agent, the liquid in the first cleaning circuit and / or the second cleaning circuit is driven to circulate by the circulating pump 6, so that the booster pump 12 is avoided to be driven, thereby avoiding the damage of the diaphragm in the booster pump 12 in the cleaning liquid, prolonging the service life of the booster pump 12; in addition, the liquid in the first cleaning circuit and / or the second cleaning circuit is driven to circulate by the circulating pump 6, so that the pressureless driving of the cleaning liquid circulation is realized, the amount of the cleaning agent permeating to the pure water end of the reverse osmosis membrane filter core 2 is reduced, thereby reducing the residual cleaning agent in the reverse osmosis membrane filter core 2.

[0094] Preferably, as shown in Figures 1 to 7 The water purification equipment further comprises a flow control member 7, which is arranged on the first cleaning circuit and / or the second cleaning circuit and is used to adjust the water amount flowing from the wastewater end of the reverse osmosis membrane filter core 2 to the water inlet end of the reverse osmosis membrane filter core 2.

[0095] When the water purification equipment is in the normal water production mode, the wastewater backflow can also be realized by means of the first cleaning pipe 311 or the second cleaning pipe 321, thereby helping to reduce the water source waste; by arranging the flow control member 7, the backflow amount from the wastewater end of the reverse osmosis membrane filter core 2 to the water inlet end of the reverse osmosis membrane filter core 2 can be adjusted, on the one hand, the problem of water source waste caused by too little backflow amount can be avoided, on the other hand, the service life of the reverse osmosis membrane filter core 2 affected by too high backflow amount can also be avoided.

[0096] Preferably, as shown in Figure 1 、 Figure 2 、 Figures 4 to 7 The water purification equipment 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 to control the opening and closing of the backflow pipe 23.

[0097] By such an arrangement, on the one hand, the pure water containing the cleaning agent at the pure water end of the reverse osmosis membrane filter core 2 can be discharged to the upstream end of the booster pump 12 after the cleaning of the reverse osmosis membrane filter core 2 is completed, and the residual small amount of cleaning agent is further filtered by the reverse osmosis membrane filter core 2, thereby being discharged from the water purification equipment, which helps to realize zero addition and zero chemical pollution; on the other hand, when the water purification equipment 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 situation that the TDS value of the first cup of water is increased, and the first cup of water can also be backflowed to the upstream end of the booster pump 12 through the backflow pipe 23, thereby preventing the user from drinking the water with high TDS value.

[0098] It should be noted that although the utility model is in the form of setting backflow pipe 23 and backflow valve 231 to reduce the residual cleaning agent and solve the problem of high TDS value of the first cup of water, but this is not restrictive, for example, it can also be solved by setting drain pipe 22 and drain valve 221.

[0099] Specifically, as shown in Figure 3 The water purification equipment further comprises a drain pipe 22 and a drain valve 221, one end of the drain pipe 22 is in communication with the pure water outlet pipe 5, the other end is in communication with the waste water 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.

[0100] Through such a setting, after the cleaning of the reverse osmosis membrane filter core 2 is completed, the drain valve 221 is opened first, so that the 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 cleaning agent-containing pure water is completely discharged, the drain valve 221 is closed again, so that the 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 the residual cleaning agent can be discharged from the water purification equipment, which helps to realize zero addition and zero chemical pollution, and further improves the user's experience.

[0101] It should be further noted that the other end of the drain pipe 22 is not limited to be in communication with the waste water outlet pipe 21, 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 equipment, and the cleaning agent-containing pure water or the pure water with high TDS value is directly discharged to the sewer pipe or the waste water outlet of the water purification equipment, and the like, and such flexible adjustment and change does not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0102] Preferably, the water purification equipment further comprises a waste water valve 211 arranged on the waste water outlet pipe 21, so as to adjust the pure waste ratio through the waste water valve 211.

[0103] Preferably, as shown in Figures 1 to 7 The water purification equipment further comprises a pure water outlet pipe 5 and a pure water water member 51, the pure water water member 51 is in communication with the pure water end of the reverse osmosis membrane filter core 2 through the pure water outlet pipe 5, and the pure water water member 51 is used to output the water at the pure water end of the reverse osmosis membrane filter core 2 for the user to drink.

[0104] It should be noted that, in practical applications, those skilled in the art can directly configure the pure water component 51 as a water outlet component (such as a faucet or spout), with the filtered pure water flowing out from the faucet or spout for user use. Alternatively, the pure water component 51 can be configured as a post-filter, with the filtered pure water flowing into the post-filter to improve the taste for user use. Or, the pure water component 51 can be configured as a pure water tank, with the pure water filtered by the reverse osmosis membrane filter 2 flowing into the pure water tank for storage for user use, and so on. Such adjustments and changes to the specific configuration of the pure water component 51 do not deviate from the principle and scope of this utility model and should all be included within the protection scope of this utility model.

[0105] Preferably, the pure water component 51 is a post-filter.

[0106] Preferably, such as Figures 1 to 7 As shown, the water purification equipment of this utility model also includes an inlet valve 11 installed on the main inlet water line 1, which is used to control the opening and closing of the main inlet water line 1.

[0107] It should be noted that, in practical applications, those skilled in the art can configure the water purification equipment as a water purifier, or as an integrated water purifier and drinking water machine, or as any other possible type, etc. Such adjustments and changes to the specific configuration type of the water purification equipment do not deviate from the principles and scope of this utility model and should all be included within the protection scope of this utility model.

[0108] For example, the water purification device is a water purifier.

[0109] The working process of the water purification equipment of this utility model is described in detail below with reference to the following situations.

[0110] Scenario 1:

[0111] Normal water production mode: Open the inlet valve 11, close the first cleaning valve 312 and the second cleaning valve 322. The water source is filtered by the pre-filter 4 and then transported to the reverse osmosis membrane filter 2 through the main inlet pipe 1. The pure water filtered by the reverse osmosis membrane filter 2 flows to the pure water use component 51 through the pure water outlet pipe 5 for user use. The wastewater generated by filtration is discharged through the wastewater outlet pipe 21.

[0112] In addition, some of the wastewater generated by filtration can be returned to the inlet of the reverse osmosis membrane filter element 2 through the first cleaning pipe 311 (or the second cleaning pipe 321) to realize wastewater return. At the same time, the wastewater return flow can be adjusted through the flow control component 7 to improve the utilization rate of water source and the service life of reverse osmosis membrane filter element 2.

[0113] Scenario 2:

[0114] The first cleaning agent cleaning mode of the reverse osmosis membrane filter core 2: the water inlet valve 11 and the first cleaning valve 312 are opened, the second cleaning valve 322 is closed, the first cleaning agent is put into the pre-filter core 4 (or the pre-filter core 4 with the first cleaning agent is replaced), the water source enters the pre-filter core 4 to dissolve the first cleaning agent to form the first cleaning liquid, the first cleaning liquid is transported to the reverse osmosis membrane filter core 2 through the water inlet main line 1, and the dirt 9 on the reverse osmosis membrane filter core 2 is cleaned, the cleaned dirt 9 is transported to the water inlet end of the reverse osmosis membrane filter core 2 again through the first cleaning pipe 311 along with the first cleaning liquid, and is washed through multiple cycles to clean the reverse osmosis membrane filter core 2.

[0115] The dirt 9 cleaned from the reverse osmosis membrane filter core 2 enters the pre-filter core 4 through the water inlet 46 along with the first cleaning liquid, the dirt 9 is intercepted into the filtering channel 44 by the first filter material 42, the first cleaning liquid passes through the first filter material 42 to enter the storage cavity 45, and then enters the reverse osmosis membrane filter core 2 through the water outlet 47, so that the dirt 9 can be prevented from entering the reverse osmosis membrane filter core 2 to cause secondary pollution to the reverse osmosis membrane filter core 2.

[0116] Case 3:

[0117] The second cleaning agent cleaning mode of the reverse osmosis membrane filter core 2: the water inlet valve 11 and the second cleaning valve 322 are opened, the first cleaning valve 312 is closed, the water flow filtered through the pre-filter core 4 flows into the reverse osmosis membrane filter core 2, flows out from the wastewater end of the reverse osmosis membrane filter core 2, and then flows into the second cleaning pipe 321 to dissolve the second cleaning agent in the second cleaning agent storage member 323 to form the second cleaning liquid, the second cleaning liquid is transported to the reverse osmosis membrane filter core 2 to clean the reverse osmosis membrane filter core 2, then the cleaned dirt 9 flows to the water inlet end of the reverse osmosis membrane filter core 2 along with the second cleaning liquid through the wastewater end of the reverse osmosis membrane filter core 2 and the second cleaning pipe 321, the reverse osmosis membrane filter core 2 is washed through multiple cycles, and after the cleaning is completed, the second cleaning liquid flows out from the wastewater outlet pipe 21.

[0118] Case 4:

[0119] The pure water backflow mode: after the first cleaning agent or the second cleaning agent is used to clean the reverse osmosis membrane filter core 2, a small amount of cleaning agent penetrates into the pure water end of the reverse osmosis membrane filter core 2, the backflow valve 231 is opened, the water at the pure water end of the reverse osmosis membrane filter core 2 is transported to the water inlet end of the reverse osmosis membrane filter core 2, and the pure water containing a small amount of cleaning agent is discharged through multiple filtrations.

[0120] The pure water discharge mode: after the first cleaning agent or the second cleaning agent is used to clean the reverse osmosis membrane filter core 2, the drain valve 221 is opened, the water at the pure water end of the reverse osmosis membrane filter core 2 is transported to the wastewater outlet pipe 21 through the drain pipe 22, and the pure water containing a small amount of cleaning agent is discharged.

[0121] Thus, the technical scheme of the utility model 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 utility model 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 departing from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A water purification device, characterized in that, The water purification equipment includes: Reverse osmosis membrane filter element (2); A pre-filter (4) having a storage chamber (45) for storing a first cleaning agent, the outlet of the pre-filter (4) being connected to the inlet of the reverse osmosis membrane filter (2) to deliver the first cleaning agent into the reverse osmosis membrane filter (2); and The first cleaning pipe (311) has its inlet end connected to the wastewater end of the reverse osmosis membrane filter element (2) and its outlet end connected to the upstream end of the reverse osmosis membrane filter element (2), and can transport the liquid from the wastewater end of the reverse osmosis membrane filter element (2) to the inlet end of the reverse osmosis membrane filter element (2), so that the inlet end of the reverse osmosis membrane filter element (2), the wastewater end of the reverse osmosis membrane filter element (2) and the first cleaning pipe (311) are connected in sequence to form a first cleaning circuit; The water purification device is configured to drive the liquid circulation within the first cleaning circuit.

2. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes a main water inlet (1), the first end of which is connected to the outlet of the pre-filter (4), the second end of which is connected to the inlet of the reverse osmosis membrane filter (2), the outlet of the first cleaning pipe (311) is connected to the main water inlet (1), and the inlet of the reverse osmosis membrane filter (2), the wastewater end of the reverse osmosis membrane filter (2), the first cleaning pipe (311) and the main water inlet (1) are connected in sequence to form the first cleaning circuit; Alternatively, the outlet end of the first cleaning pipe (311) is connected to the upstream end of the pre-filter (4), and the inlet end of the reverse osmosis membrane filter (2), the wastewater end inside the reverse osmosis membrane filter (2), the first cleaning pipe (311) and the pre-filter (4) are sequentially connected to form the first cleaning circuit. The pre-filter (4) can intercept dirt (9) in the first cleaning circuit to prevent dirt (9) from entering the reverse osmosis membrane filter (2).

3. The water purification equipment according to claim 2, characterized in that, The pre-filter (4) includes a housing (41), a first filter material (42) disposed in the housing (41), and a second filter material (43) disposed inside the first filter material (42). A filtration channel (44) is formed between the housing (41) and the first filter material (42). A storage cavity (45) is formed inside the second filter material (43). The inlet (46) of the pre-filter (4) is connected to the filtration channel (44), and the outlet (47) of the pre-filter (4) is connected to the storage cavity (45). The first filter material (42) can intercept dirt (9) in the first cleaning circuit into the filtration channel (44).

4. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes a wastewater outlet pipe (21) and a first cleaning valve (312). The inlet end of the first cleaning pipe (311) is connected to the wastewater outlet pipe (21). The first cleaning valve (312) is installed on the first cleaning pipe (311) and is used to control the opening and closing of the first cleaning pipe (311). Alternatively, the water purification equipment may further include a wastewater outlet pipe (21) and a reversing valve (8), wherein the first port of the reversing valve (8) is connected to the wastewater end of the reverse osmosis membrane filter element (2), the second port of the reversing valve (8) is connected to the wastewater outlet pipe (21), and the third port of the reversing valve (8) is connected to the inlet end of the first cleaning pipe (311), wherein the first port can selectively connect to the second port or the third port.

5. The water purification equipment according to claim 1, characterized in that, The water purification equipment also includes a second cleaning pipe (321), a second cleaning valve (322), and a second cleaning agent storage component (323). The second cleaning agent storage component (323) is used to store a second cleaning agent. The second cleaning pipe (321) can transport the second cleaning liquid in the second cleaning agent storage component (323) to the reverse osmosis membrane filter element (2). The second cleaning valve (322) is installed on the second cleaning pipe (321) and is used to control the opening and closing of the second cleaning pipe (321).

6. The water purification equipment according to claim 5, characterized in that, The inlet end of the second cleaning pipe (321) is connected to the wastewater end of the reverse osmosis membrane filter element (2), and the outlet end of the second cleaning pipe (321) is connected to the upstream end of the reverse osmosis membrane filter element (2) and can transport the second cleaning liquid into the reverse osmosis membrane filter element (2). The inlet end of the reverse osmosis membrane filter element (2), the wastewater end of the reverse osmosis membrane filter element (2) and the second cleaning pipe (321) are connected in sequence to form a second cleaning circuit. The second cleaning agent storage component (323) is arranged on the second cleaning pipe (321). The water purification equipment is also configured to drive the liquid in the second cleaning circuit to circulate.

7. The water purification equipment according to claim 6, characterized in that, The water purification equipment also includes a first check valve component (313) disposed on the first cleaning pipe (311), the first check valve component (313) being able to prevent water at the upstream end of the reverse osmosis membrane filter element (2) from flowing back into the first cleaning pipe (311); And / or, the water purification device further includes a second check valve (324) disposed on the second cleaning pipe (321), the second check valve (324) being located downstream of the second cleaning agent storage component (323) and capable of preventing water from the upstream end of the reverse osmosis membrane filter element (2) from flowing back into the second cleaning agent storage component (323).

8. The water purification equipment according to claim 6, characterized in that, The water purification equipment includes a booster pump (12), which is capable of driving the liquid circulation flow in the first cleaning circuit and / or the second cleaning circuit; Alternatively, the water purification device may further include a circulation pump (6), which is disposed on the first cleaning circuit and is used to drive the liquid circulation flow within the first cleaning circuit.

9. The water purification equipment according to claim 8, characterized in that, The booster pump (12) includes at least a first voltage level and a second voltage level. The booster pump (12) has a level adjustment module. The level adjustment module is used to adjust the voltage level of the booster pump (12) to the second voltage level when the water purification equipment is in the cleaning mode. The voltage value of the second voltage level is lower than the voltage value of the first voltage level.

10. The water purification equipment according to any one of claims 1 to 9, characterized in that, The water purification equipment also includes a return pipe (23) and a return valve (231) installed on the return pipe (23). One end of the return pipe (23) is connected to the pure water end of the reverse osmosis membrane filter element (2), and the other end of the return pipe (23) is connected to the water inlet end of the reverse osmosis membrane filter element (2). The return valve (231) is installed on the return pipe (23) and is used to control the opening and closing of the return pipe (23). Alternatively, the water purification equipment may also include a drain pipe (22) and a drain valve (221) disposed on the drain pipe (22). One end of the drain pipe (22) is connected to the pure water end of the reverse osmosis membrane filter element (2), and the other end of the drain pipe (22) is connected to the wastewater outlet pipe (21) of the water purification equipment. The drain valve (221) is disposed on the drain pipe (22) and is used to control the opening and closing of the drain pipe (22).

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