Water purification equipment

Abstract

The utility model relates to the technical field of water purification, particularly provides water purification equipment, and aims to solve the problem that the use experience of a user is influenced due to poor washing effect and waste of water resources when the conventional water purification equipment is used for washing a reverse osmosis membrane filter element. The water purification equipment comprises a reverse osmosis membrane filter element, a flushing pipeline and a dirt collection component, and the water inlet end and the water outlet end of the flushing pipeline are communicated with the wastewater end and the water inlet end of the reverse osmosis membrane filter element respectively, so that the flushing pipeline, the water inlet end of the reverse osmosis membrane filter element and the wastewater end of the reverse osmosis membrane filter element are sequentially communicated to form a flushing loop; the water purifying equipment can drive liquid in the flushing loop to flow circularly, and the dirt collecting component is arranged on the flushing loop and used for collecting dirt. According to the reverse osmosis membrane filter element washing device, a washing loop can be formed to circularly wash the reverse osmosis membrane filter element, washed dirt can be collected, secondary pollution to the reverse osmosis membrane filter element is prevented, the washing effect is improved, water resources are saved, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and specifically provides a water purification device. Background Technology

[0002] As people's living standards improve, their demand for drinking water is also increasing. Water systems such as water purifiers and water dispensers are gradually becoming essential drinking water facilities in people's daily lives.

[0003] During normal use of water purification equipment, it is usually necessary to flush the reverse osmosis membrane filter cartridge to wash off the contaminants attached to the membrane, thereby extending the service life of the reverse osmosis membrane filter cartridge.

[0004] However, existing water purification equipment typically flushes reverse osmosis membrane filter cartridges by directly letting water flow through the inside of the filter cartridge and then directly discharging the flushing water through the wastewater outlet pipe. This not only results in poor flushing performance but also leads to water waste and negatively impacts the user experience. Utility Model Content

[0005] The present invention aims to solve the above-mentioned technical problems to at least a certain extent, that is, to at least a certain extent solve the problem that the user experience is affected by the poor rinsing effect and water waste when rinsing the reverse osmosis membrane filter element in existing water purification equipment.

[0006] In a first aspect, the present invention provides a water purification device, comprising: a reverse osmosis membrane filter element; a flushing pipeline, wherein the inlet end of the flushing pipeline is connected to the wastewater end of the reverse osmosis membrane filter element, and the outlet end of the flushing pipeline is connected to the inlet end of the reverse osmosis membrane filter element, so that the flushing pipeline, the inlet end of the reverse osmosis membrane filter element, and the wastewater end of the reverse osmosis membrane filter element are sequentially connected to form a flushing circuit, and the water purification device is capable of driving the liquid circulation within the flushing circuit; and a dirt collection component, which is disposed on the flushing circuit and used to collect dirt within the flushing circuit.

[0007] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a wastewater outlet pipe, which is connected to the wastewater end of the reverse osmosis membrane filter element. The inlet end of the flushing pipe is connected to the wastewater outlet pipe. The water purification equipment further includes a flushing valve, which is disposed on the flushing pipe and used to control the on / off state of the flushing pipe. The dirt collection component is disposed on the wastewater outlet pipe and / or the flushing pipe. Alternatively, the water purification equipment further includes a wastewater outlet pipe and a reversing valve. The first port of the reversing valve is connected to the wastewater end of the reverse osmosis membrane filter element, the second port of the reversing valve is connected to the wastewater outlet pipe, and the third port of the reversing valve is connected to the inlet end of the flushing pipe. The first port can selectively connect to the second port or the third port, and the dirt collection component is disposed on the flushing pipe.

[0008] In the preferred technical solution for the water purification equipment described above, the water purification equipment further includes a main water inlet, which is connected to the inlet end of the reverse osmosis membrane filter element. The outlet end of the flushing pipe is connected to the main water inlet. The water purification equipment further includes a backflow preventer, which is disposed on the flushing pipe and can prevent water in the main water inlet from flowing back into the flushing pipe.

[0009] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment further includes a flow control component, which is disposed on the flushing circuit and is capable of adjusting the water flow rate from the wastewater end of the reverse osmosis membrane filter element to the water inlet end of the reverse osmosis membrane filter element.

[0010] In the preferred technical solution for the water purification equipment described above, the water purification equipment further includes a cleaning module, which is disposed on the flushing pipeline and is capable of delivering cleaning liquid to the inlet end of the reverse osmosis membrane filter element to clean the reverse osmosis membrane filter element; or, the dirt collection component has a feeding port and a storage chamber, the feeding port being connected to the storage chamber so that the user can add cleaning agent into the storage chamber through the feeding port.

[0011] In the preferred technical solution for the water purification equipment described above, the cleaning module is configured to allow water from the wastewater end of the reverse osmosis membrane filter element to flow to the inlet end of the reverse osmosis membrane filter element when it is in the first working state, and to deliver cleaning liquid to the reverse osmosis membrane filter element when it is in the second working state; and / or, the number of flushing pipes is two, and the number of cleaning modules is also two, and they are configured to correspond one-to-one with the flushing pipes.

[0012] In the preferred technical solution for the water purification equipment described above, the cleaning module includes a housing with a cavity inside. The housing is provided with a cleaning agent dispensing port communicating with the cavity, allowing cleaning agent to be dispensed into the cavity via the dispensing port when the cleaning module is in its second working state. Alternatively, the cleaning module includes a housing and a sealing member. The housing has a water passage and a cavity inside. The housing is provided with an inlet and an outlet communicating with the water passage. The cavity has an opening, and the sealing member is disposed at the opening and can open or close the opening.

[0013] In the preferred embodiment of the above-mentioned water purification equipment, the water purification equipment includes a booster pump, the outlet end of the flushing pipeline is connected to the main water inlet and is located upstream of the booster pump, and the booster pump can drive the liquid circulation flow in the flushing circuit; or, the water purification equipment further includes a circulation pump, which is arranged on the flushing circuit and used to drive the liquid circulation flow in the flushing circuit.

[0014] In the preferred technical solution for the water purification equipment described above, the water purification equipment further includes a pre-filtration unit, which is connected to the main water inlet of the water purification equipment, and the outlet of the flushing pipe is located downstream of the pre-filtration unit; and / or, the water purification equipment further includes a pure water outlet pipe and a pure water user component, which is connected to the pure water end of the reverse osmosis membrane filter element through the pure water outlet pipe, and is used to output the water from the pure water end of the reverse osmosis membrane filter element for user drinking.

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

[0016] When the above-mentioned preferred technical solution is adopted, on the one hand, the reverse osmosis membrane filter element can be circulated and flushed through the flushing pipeline, and the reverse osmosis membrane filter element can be flushed multiple times to improve the flushing effect. During flushing, the dirt flushed off the reverse osmosis membrane filter element can also be collected to prevent the dirt from re-entering the reverse osmosis membrane filter element and causing secondary pollution, thus making the flushing effect better. On the other hand, when the water purification equipment is in normal water production mode, the wastewater generated after filtration can also be sent back to the inlet end of the reverse osmosis membrane filter element, thereby improving water utilization, saving water resources, and improving the user experience.

[0017] Furthermore, by setting up a flow control component, when the water purification equipment is in normal water production mode, the flow rate of water flowing from the wastewater end of the reverse osmosis membrane filter element to the inlet end of the reverse osmosis membrane filter element can be adjusted through the flow control component, thereby adjusting the wastewater return flow rate. On the one hand, this can avoid the waste of water resources due to the wastewater return flow rate being too low, and on the other hand, it can also avoid affecting the service life of the reverse osmosis membrane filter element due to the wastewater return flow rate being too high.

[0018] Furthermore, by using a booster pump to drive the liquid circulation in the flushing circuit, the need for a separate circulation pump is eliminated, further reducing the cost of the water purification equipment. Alternatively, by using a circulation pump to drive the liquid circulation in the cleaning circuit, the use of a booster pump to drive the cleaning solution circulation in the cleaning circuit can be avoided. On the one hand, this avoids damage to the diaphragm in the booster pump, thus extending the booster pump's service life. On the other hand, compared to using a booster pump to drive the cleaning solution circulation in the cleaning circuit, the absence of high pressure reduces the amount of cleaning solution permeating to the pure water end of the reverse osmosis membrane filter element, which not only reduces chemical residues but also reduces damage to the membrane of the reverse osmosis membrane filter element.

[0019] Furthermore, by setting up a cleaning module, cleaning fluid can be delivered to the reverse osmosis membrane filter element, thereby cleaning the reverse osmosis membrane filter element and extending its service life. In addition, by circulating the cleaning fluid in the flushing circuit, the reverse osmosis membrane filter element can be flushed multiple times, improving the cleaning effect.

[0020] Furthermore, compared to making the cleaning module detachable, configuring the cleaning module to allow water to flow from the wastewater end of the reverse osmosis membrane filter to the inlet end of the reverse osmosis membrane filter when it is in the first working state and to deliver cleaning fluid to the reverse osmosis membrane filter when it is in the second working state can eliminate the need for installation and further improve the user experience.

[0021] Furthermore, by setting up a return pipe and return valve, or by setting up a drain pipe and drain valve, on the one hand, it is possible to discharge the pure water containing a small amount of detergent from the pure water end of the reverse osmosis membrane filter after the cleaning module cleans the reverse osmosis membrane filter, which helps to achieve zero pollution and zero chemical addition. On the other hand, when the water purification equipment is not used for a long time, it can discharge the water with a high TDS from the pure water end of the reverse osmosis membrane filter, solving the problem of high TDS value in the "first cup of water". Attached Figure Description

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

[0023] Figure 1 This is a schematic diagram of the structure of a first embodiment of the water purification equipment of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of a second embodiment of the water purification equipment of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the water purification equipment of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of Embodiment 4 of the water purification equipment of this utility model;

[0027] Figure 5 This is a structural schematic diagram of Embodiment 5 of the water purification equipment of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of Embodiment Six of the water purification equipment of this utility model;

[0029] Figure 7 This is a schematic diagram of one embodiment of the cleaning module of this utility model;

[0030] Figure 8 This is a schematic diagram of another embodiment of the cleaning module of this utility model;

[0031] Figure 9 This is a schematic diagram of one embodiment of the dirt collection component of this utility model;

[0032] Figure 10 This is a schematic diagram of another embodiment of the dirt collection component of this utility model;

[0033] Figure 11 This is a schematic diagram of another embodiment of the dirt collection component of this utility model.

[0034] List of reference numerals in the attached diagram:

[0035] 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. Flushing pipe; 312. Flushing valve; 313. Cleaning module; 31301. Liquid inlet; 31302. Liquid outlet; 3131. Housing; 3132. Cavity; 3133. Dispensing port; 3134. Sealing component; 3135. Water passage; 3136. Opening; 3137 1. Cleaning agent; 3138. Grip part; 314. Check valve component; 4. Pre-filter unit; 5. Pure water outlet pipe; 51. Pure water supply component; 6. Circulation pump; 7. Flow control component; 8. Dirt collection component; 80. Housing; 801. First chamber; 802. Second chamber; 803. Inlet; 804. Outlet; 805. Liquid outlet pipe; 806. Liquid inlet pipe; 81. Feed port; 82. Filter screen; 83. Cleaning port; 9. Reversing valve; 91. First interface; 92. Second interface; 93. Third interface. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] like Figures 1 to 6 As shown, the water purification equipment of this utility model includes a reverse osmosis membrane filter element 2, a flushing pipeline 311, and a dirt collection component 8.

[0040] The inlet end of the flushing pipe 311 is connected to the wastewater end of the reverse osmosis membrane filter element 2, and the outlet end of the flushing pipe 311 is connected to the inlet end of the reverse osmosis membrane filter element 2, so that the flushing pipe 311, the inlet end of the reverse osmosis membrane filter element 2 and the wastewater end of the reverse osmosis membrane filter element 2 are connected in sequence to form a flushing circuit, and the water purification equipment can drive the liquid circulation flow in the flushing circuit.

[0041] The dirt collection component 8 is installed on the flushing circuit and is used to collect dirt in the flushing circuit.

[0042] With this setup, on the one hand, the reverse osmosis membrane filter element 2 can be circulated and flushed through the flushing pipe 311, allowing for multiple cyclic flushings to improve the flushing effect. During flushing, the dirt flushed off the reverse osmosis membrane filter element 2 can also be collected, preventing the dirt from re-entering the reverse osmosis membrane filter element 2 and causing secondary pollution, thus resulting in a better flushing effect. On the other hand, when the water purification equipment is in normal water production mode, the wastewater produced after filtration can also be sent back to the inlet of the reverse osmosis membrane filter element 2, thereby improving water utilization, saving water resources, and enhancing the user experience.

[0043] It should be noted that, in practical applications, those skilled in the art can configure the reverse osmosis membrane filter element 2 to have two wastewater outlets, with the inlet end of the flushing pipe 311 connected to one of the wastewater outlets and the wastewater outlet pipe 21 connected to the other wastewater outlet. Alternatively, the inlet end of the flushing pipe 311 can be configured to connect to the wastewater outlet pipe 21 of the water purification equipment. Furthermore, the wastewater end of the reverse osmosis membrane filter element 2 can be configured to selectively connect to either the wastewater outlet pipe 21 or the inlet end of the flushing pipe 311, and so on. Such adjustments and changes to the specific connection method between the inlet end of the flushing pipe 311 and the wastewater end of the reverse osmosis membrane filter element 2 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.

[0044] In one specific embodiment, such as Figure 1 and Figure 3 As shown, the water purification equipment also includes a wastewater outlet pipe 21, which is connected to the wastewater end of the reverse osmosis membrane filter element 2. The inlet end of the flushing pipe 311 is connected to the wastewater outlet pipe 21. A flushing valve 312 is provided on the flushing pipe 311 and is used to control the opening and closing of the flushing pipe 311. The dirt collection component 8 is provided on the wastewater outlet pipe 21 and / or the flushing pipe 311.

[0045] In another specific embodiment, such as Figure 2 and Figure 4As shown, the water purification equipment also includes a wastewater outlet pipe 21 and a reversing valve 9. The first port 91 of the reversing valve 9 is connected to the wastewater end of the reverse osmosis membrane filter element 2, the second port 92 of the reversing valve 9 is connected to the wastewater outlet pipe 21, and the third port 93 of the reversing valve 9 is connected to the inlet end of the flushing pipe 311. The first port 91 can be selectively connected to the second port 92 or the third port 93. The dirt collection component 8 is installed on the flushing pipe 311.

[0046] It should be noted that those skilled in the art do not limit the specific location of the dirt collection component 8 in the flushing circuit. For example, the dirt collection component 8 can be set on the flushing pipe 311, or it can be set on the wastewater outlet pipe 21, etc. Such adjustments and changes to the specific location of the dirt collection component 8 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0047] Preferably, the dirt collection component 8 is installed on the wastewater outlet pipe 21.

[0048] With this configuration, by placing the dirt collection component 8 on the wastewater outlet pipe 21, on the one hand, when the reverse osmosis membrane filter element 2 needs to be rinsed, the dirt washed off the reverse osmosis membrane filter element 2 can be collected to prevent secondary pollution of the reverse osmosis membrane filter element 2. On the other hand, when the water purification equipment is in normal water production mode, it can also prevent the concentrated water produced by filtration from clogging the wastewater valve 211, further improving the user experience.

[0049] It should be noted that, in practical applications, those skilled in the art can configure the reverse osmosis membrane filter element 2 to have two inlets, with the main water inlet 1 connected to one of the inlets and the flushing pipe 311 connected to the other inlet. Alternatively, the main water inlet 1 can be connected to the inlet end of the reverse osmosis membrane filter element 2, and the flushing pipe 311 can be connected to the main water inlet 1, etc. Such adjustments and changes to the specific connection method of connecting the outlet end of the flushing pipe 311 to the inlet end of the reverse osmosis membrane filter element 2 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.

[0050] Preferably, such as Figures 1 to 6 As shown, the water purification equipment also includes a main water inlet 1, which is connected to the inlet end of the reverse osmosis membrane filter element 2. The outlet end of the flushing pipe 311 is connected to the main water inlet 1. The water purification equipment also includes a backflow preventer 314, which is installed on the flushing pipe 311 and can prevent water in the main water inlet 1 from flowing back into the flushing pipe 311.

[0051] It should be noted that, in practical applications, those skilled in the art can configure the check valve 314 as a check valve, or as a control valve, etc. Such adjustments and changes to the specific configuration of the check valve 314 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0052] Preferably, the check valve 314 is a check valve.

[0053] Preferably, such as Figures 1 to 6 As shown, the water purification equipment also includes a flow control component 7, which is installed on the flushing circuit and can adjust the water flow rate from the wastewater end of the reverse osmosis membrane filter element 2 to the inlet end of the reverse osmosis membrane filter element 2.

[0054] By setting the flow control component 7, when the water purification equipment is in normal water production mode, the flow rate of water flowing from the wastewater end of the reverse osmosis membrane filter element 2 to the inlet end of the reverse osmosis membrane filter element 2 can be adjusted through the flow control component 7, thereby adjusting the wastewater return flow rate. On the one hand, it can avoid the waste of water resources due to the wastewater return flow rate being too low, and on the other hand, it can also avoid the service life of the reverse osmosis membrane filter element 2 being affected by the wastewater return flow rate being too high.

[0055] It should be noted that the flow control component 7 can be set to a wastewater ratio, or it can be set to a proportional valve, or it can be set to a water-blocking block with a water passage hole, etc. Such adjustments and changes to the specific setting type of the flow regulating component 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.

[0056] Preferably, the flow control component 7 is the wastewater ratio.

[0057] It should be noted that, in practical applications, those skilled in the art can set the flow control component 7 on the flushing pipe 311, or they can set the flow control component 7 on the wastewater outlet pipe 21, etc. Such adjustments and changes to the specific setting position of the flow control component 7 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.

[0058] Preferably, such as Figures 1 to 6 As shown, the flow control component 7 is installed on the flushing pipe 311.

[0059] It should be noted that when the reverse osmosis membrane filter element 2 is used for a long time, dirt will form inside the reverse osmosis membrane filter element 2, which will affect the water production rate and water production efficiency of the reverse osmosis membrane filter element 2. Cleaning solution can also be supplied to the reverse osmosis membrane filter element 2 to clean it.

[0060] Preferably, such as Figures 3 to 6 As shown, the water purification equipment also includes a cleaning module 313, which is installed on the flushing pipe 311 and can deliver cleaning liquid to the inlet of the reverse osmosis membrane filter element 2 in order to clean the reverse osmosis membrane filter element 2.

[0061] By setting up the cleaning module 313, cleaning fluid can also be delivered to the reverse osmosis membrane filter element 2, thereby cleaning the reverse osmosis membrane filter element 2 and extending its service life. Furthermore, by circulating the cleaning fluid in the flushing circuit, the reverse osmosis membrane filter element 2 can be flushed multiple times, improving the cleaning effect of the reverse osmosis membrane filter element 2.

[0062] It should be noted that, in practical applications, those skilled in the art do not impose any limitations on the specific connection method of the cleaning module 313 in the rinsing pipeline 311. For example, the cleaning module can be configured to have only a cleaning outlet, which is connected to the rinsing pipeline 311, and the cleaning liquid stored in the cleaning module can be directly transported to the rinsing pipeline 311 through the cleaning outlet. Alternatively, the cleaning module can be configured to be connected in parallel to the rinsing pipeline 311, that is, both the cleaning inlet and the cleaning outlet of the cleaning module are connected to the rinsing pipeline 311. Or, the cleaning module 313 can be configured to be connected in series to the rinsing pipeline 311, and so on. Such adjustments and changes to the specific connection method of the cleaning module 313 in the rinsing pipeline 311 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0063] Preferably, the cleaning module 313 is connected in series with the flushing pipe 311.

[0064] It should be noted that, in practical applications, those skilled in the art can configure the cleaning module 313 as detachable. When the cleaning module 313 is not required to clean the reverse osmosis membrane filter element 2, it can be removed from the flushing pipe 311. When the cleaning module 313 is required to clean the reverse osmosis membrane filter element 2, it can be installed on the cleaning pipe. Alternatively, the cleaning module 313 can be configured to allow water from the wastewater end of the reverse osmosis membrane filter element 2 to flow to the inlet end of the reverse osmosis membrane filter element 2 when it is in the first working state, and to deliver cleaning liquid to the reverse osmosis membrane filter element 2 when it is in the second working state, etc. Such adjustments and changes to the specific configuration of the cleaning module 313 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0065] Preferably, the cleaning module 313 is configured to allow water from the wastewater end of the reverse osmosis membrane filter element 2 to flow to the inlet end of the reverse osmosis membrane filter element 2 when it is in the first working state, and to deliver cleaning liquid to the reverse osmosis membrane filter element 2 when it is in the second working state.

[0066] With this configuration, compared to making the cleaning module 313 detachable, the cleaning module 313 is configured to allow water from the wastewater end of the reverse osmosis membrane filter element 2 to flow to the inlet end of the reverse osmosis membrane filter element 2 when it is in the first working state, and to deliver cleaning fluid to the reverse osmosis membrane filter element 2 when it is in the second working state. This eliminates the need for installation for the user and further enhances the user experience.

[0067] The cleaning module 313 will be described in detail below, taking into account the following two scenarios.

[0068] Scenario 1:

[0069] like Figure 7 As shown, the cleaning module 313 includes a housing 3131, which has a cavity 3132. The housing 3131 is provided with a cleaning agent inlet 3133 that communicates with the cavity 3132. When the cleaning module 313 is in the second working state, cleaning agent can be added into the cavity 3132 through the inlet 3133.

[0070] When the cleaning module 313 does not need to clean the reverse osmosis membrane filter element 2, no cleaning agent is added to the cavity 3132. At this time, the cleaning module 313 is equivalent to a passage that allows water from the wastewater end of the reverse osmosis membrane filter element 2 to flow to the inlet end of the reverse osmosis membrane filter element 2. When the cleaning module 313 needs to clean the reverse osmosis membrane filter element 2, the user adds cleaning agent to the cavity 3132 through the inlet 3133. After the water from the wastewater end of the reverse osmosis membrane filter element 2 enters the cavity 3132 through the inlet 31301, it dissolves the cleaning agent to form a cleaning solution. The cleaning solution is then delivered to the reverse osmosis membrane filter element 2 through the outlet 31302 to clean the reverse osmosis membrane filter element 2.

[0071] Scenario 2:

[0072] like Figure 8 As shown, the cleaning module 313 includes a housing 3131 and a sealing member 3134. The housing 3131 has a water passage 3135 and a cavity 3132. The cavity 3132 has an opening 3136. The sealing member 3134 is disposed at the opening 3136 and can open or close the opening 3136.

[0073] With this setup, cleaning agent can be pre-stored in the cleaning module 313. When the cleaning module 313 is not required to clean the reverse osmosis membrane filter element 2, the sealing member 3134 closes the opening 3136, preventing the water passage 3135 from connecting with the cavity 3132. At this time, water in the main inlet 1 can enter the inlet end of the reverse osmosis membrane filter element 2 through the water passage 3135. When the first cleaning module 313 is required to clean the reverse osmosis membrane filter element 2, the sealing member 3134 opens the opening 3136, connecting the water passage 3135 with the cavity 3132. Water in the main inlet 1 enters the water passage 3135 through the liquid inlet 31301 and enters the cavity 3132 through the opening 3136 to dissolve the cleaning agent stored in the cavity 3132, forming a cleaning solution. The solution then flows out through the liquid outlet 31302 and is transported to the reverse osmosis membrane filter element 2 to clean it.

[0074] Preferably, such as Figure 8 As shown, the cleaning module 313 also includes a grip 3138 located outside the housing 3131 and connected to the sealing member 3134, so as to open or close the opening 3136 by means of the grip 3138.

[0075] It should be noted that the number of flushing pipes 311 can be set to one, and correspondingly, the number of cleaning modules 313 can be set to only one; or the number of flushing pipes 311 can be set to two, and correspondingly, the number of cleaning modules 313 can be set to two; or the number of flushing pipes 311 can be set to multiple, and correspondingly, the number of cleaning modules 313 can be set to multiple, and so on. Such adjustments and changes to the specific number of flushing pipes 311 and cleaning modules 313 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.

[0076] Preferably, such as Figure 5 and Figure 6 As shown, there are two flushing pipes 311 connected in parallel, and there are also two cleaning modules 313, which correspond one-to-one with the flushing pipes 311.

[0077] With this setup, two cleaning agents can be used to clean the reverse osmosis membrane filter element 2, resulting in a more thorough cleaning and further improving the cleaning effect.

[0078] It should be noted that, in practical applications, those skilled in the art can set an acidic cleaning agent in the cleaning module 313, or they can set an alkaline cleaning agent in the cleaning module 313, etc. Such adjustments and changes to the type of cleaning agent in the cleaning module 313 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.

[0079] Preferably, the two cleaning modules 313 are used to store acidic cleaning agents and alkaline cleaning agents, respectively.

[0080] It should be noted that this utility model does not limit the specific type of acidic cleaning agent. For example, the acidic cleaning agent can be at least one of malic acid, citric acid, hydrochloric acid, and phosphoric acid. Of course, the acidic cleaning agent can also be other types of acidic cleaning agents, and those skilled in the art can make adjustments according to actual needs.

[0081] Preferably, the acidic cleaning agent is malic acid or citric acid, which not only cleans dirt but also has a good disinfection and antibacterial effect, and can disinfect and inhibit bacteria on the reverse osmosis membrane filter element 2.

[0082] It should also be noted that this utility model does not limit the specific type of alkaline cleaning agent. For example, the alkaline cleaning agent can be set to at least one of dishwashing powder, baking soda, sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, sodium citrate, tetrasodium ethylenediaminetetraacetate, sodium dodecyl sulfate, sodium disulfite, and sodium bisulfite. Of course, the alkaline cleaning agent can also be other types of alkaline cleaning agents, and those skilled in the art can make adjustments according to actual needs.

[0083] It should be noted that the cleaning method is not limited to setting a cleaning module 313 on the flushing pipe 311 to clean the reverse osmosis membrane filter element 2. For example, a feed port 81 and a storage chamber can be set directly on the dirt collection component 8, and the user can directly add cleaning agent into the storage chamber through the feed port 81, etc. Such adjustments and changes to the specific cleaning method of delivering cleaning agent to the reverse osmosis membrane filter element 2 and cleaning the reverse osmosis membrane filter element 2 do not deviate from the principle and scope of this utility model, and should be included within the protection scope of this utility model.

[0084] Preferably, such as Figure 9 As shown, the dirt collection component 8 is provided with a feeding port 81 and a storage cavity. The feeding port 81 is connected to the storage cavity so that the user can directly add cleaning agent into the storage cavity through the feeding port 81.

[0085] Specifically, such as Figures 9 to 11As shown, the dirt collection component 8 includes a housing 80 and a filter screen 82 disposed within the housing 80. The filter screen 82 divides the space within the housing 80 into a first chamber 801 and a second chamber 802, and a storage cavity is formed within the first chamber 801 and / or the second chamber 802.

[0086] like Figure 9 As shown, the housing 80 is provided with an inlet 803 and an outlet 804. The filter screen 82 divides the space inside the housing 80 into a first chamber 801 and a second chamber 802. The inlet 803 is connected to the first chamber 801, the outlet 804 is connected to the second chamber 802, and the feed port 81 is connected to the first chamber 801 and / or the second chamber 802. Dirt can be intercepted in the second chamber 802.

[0087] like Figure 10 As shown, the housing 80 is provided with an inlet 803 and an outlet pipe 805. The inlet 803 is connected to the second chamber 802, and one end of the outlet pipe 805 extends into the first chamber 801. The feed port 81 is connected to the first chamber 801 and / or the second chamber 802, and dirt can be intercepted in the second chamber 802.

[0088] like Figure 11 As shown, the housing 80 is provided with an inlet pipe 806 and an outlet 804. The filter screen 82 divides the space inside the housing 80 into a first chamber 801 and a second chamber 802. One end of the inlet pipe 806 extends into the second chamber 802. The outlet 804 is connected to the first chamber 801. The feed port 81 is connected to the first chamber 801 and / or the second chamber 802. Dirt can be intercepted in the second chamber 802.

[0089] Preferably, the impurity collection component 8 is further provided with a cleaning port 83, which is connected to the second chamber 802 so as to clean out the collected dirt.

[0090] It should be noted that, in practical applications, those skilled in the art can use a booster pump 12 to drive the liquid circulation in the flushing circuit, or a circulation pump 6 can be set up to drive the liquid circulation in the flushing circuit, 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.

[0091] In one specific embodiment, such as Figures 1 to 3 , Figure 5 As shown, the water purification equipment includes a booster pump 12. The outlet of the flushing pipeline 311 is connected to the main water inlet pipeline 1 and is located upstream of the booster pump 12. The booster pump 12 can drive the liquid circulation flow in the flushing circuit.

[0092] With this setup, the liquid circulation in the flushing circuit can be driven by the booster pump 12, thus eliminating the need for a separate circulation pump 6 and further reducing the cost of the water purification equipment.

[0093] In another specific embodiment, such as Figure 4 and Figure 6 As shown, the water purification equipment also includes a circulation pump 6, which is installed on the flushing circuit and is used to drive the liquid circulation flow in the flushing circuit.

[0094] By setting up the circulation pump 6, when the reverse osmosis membrane filter element 2 needs to be cleaned by the cleaning module 313, the cleaning liquid is driven to circulate in the flushing circuit by the circulation pump 6, which can avoid the use of the booster pump 12 to drive it, thereby avoiding damage to the diaphragm in the booster pump 12 by the cleaning liquid, and thus extending the service life of the booster pump 12.

[0095] Preferably, such as Figure 1 , Figures 3 to 5 As shown, the water purification equipment also includes a return pipe 23 and a return valve 231. One end of the return pipe 23 is connected to the pure water outlet pipe 5, and the other end of the return pipe 23 is connected to the upstream end of the booster pump 12. The return valve 231 is installed on the return pipe 23 and is used to control the opening and closing of the return pipe 23.

[0096] With this setup, on the one hand, after cleaning the reverse osmosis membrane filter 2, the pure water containing detergent from the pure water end of the reverse osmosis membrane filter 2 can be discharged to the upstream end of the booster pump 12 for further filtration through the reverse osmosis membrane filter 2, thus removing any remaining small amount of detergent from the water purification equipment. This helps achieve zero additives and zero chemical pollution. On the other hand, when the water purification equipment is in normal water production mode and does not produce water for a long time, the reverse osmosis membrane filter 2 may experience an increase in the TDS value of the first cup of water. The "first cup of water" can also be returned to the upstream end of the booster pump 12 through the return pipe 23 to prevent users from drinking water with a high TDS value.

[0097] It should be noted that although this utility model reduces detergent residue and solves the problem of high TDS value of the first cup of water by setting up a return pipe 23 and a return valve 231, this is not a limitation. For example, it can also be solved by setting up a drain pipe and a drain valve.

[0098] Specifically, such as Figure 2 and Figure 6 As shown, the water purification equipment also includes a drain pipe 22 and a drain valve 221. One end of the drain pipe 22 is connected to the pure water outlet pipe 5, and the other end is connected to the wastewater outlet pipe 21. The drain valve 221 is installed on the drain pipe 22 and is used to control the opening and closing of the drain pipe 22.

[0099] With this setup, after cleaning the reverse osmosis membrane filter element 2, the drain valve is opened first, allowing the water from the pure water end of the reverse osmosis membrane filter element 2 to flow into the wastewater outlet pipe 21 through the drain pipe 22. After the pure water containing the cleaning agent is completely discharged, the drain valve 221 is closed, allowing the water from the pure water end of the reverse osmosis membrane filter element 2 to flow into the pure water water component 51 through the pure water outlet pipe 5. This allows residual cleaning agent to be discharged from the water purification equipment, helping to achieve zero additives and zero chemical pollution, further enhancing the user experience.

[0100] It should also be noted that the connection is not limited to connecting the other end of the drain pipe 22 to the wastewater outlet pipe 21. For example, the other end of the drain pipe 22 can be directly connected to the sewer pipe or the wastewater outlet of the water purification equipment, and pure water containing detergent or pure water with a high TDS value can be directly discharged to the sewer pipe or the wastewater outlet of the water purification equipment, 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.

[0101] 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 water outlet of the pre-filter unit 4 is connected to the main water inlet 1, and the water outlet of the flushing pipe 311 is located at the downstream end of the pre-filter unit 4.

[0102] 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.

[0103] Preferably, the pre-filter unit 4 is a pre-filter cartridge.

[0104] Preferably, such as Figures 1 to 6 As shown, the water purification equipment also includes a pure water outlet pipe 5 and a pure water user component 51. The pure water user component 51 is connected to the pure water end of the reverse osmosis membrane filter element 2 through the pure water outlet pipe 5. The pure water user component 51 is used to output the water from the pure water end of the reverse osmosis membrane filter element 2 for users to drink.

[0105] 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.

[0106] Preferably, the pure water component 51 is a post-filter.

[0107] Preferably, such as Figures 1 to 6 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.

[0108] 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.

[0109] For example, the water purification device is a water purifier.

[0110] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A water purification apparatus, characterized by comprising: The water purifying device comprises: a reverse osmosis membrane filter core (2); a flushing pipeline (311), a water inlet end of the flushing pipeline (311) being communicated with a waste water end of the reverse osmosis membrane filter core (2), and a water outlet end of the flushing pipeline (311) being communicated with a water inlet end of the reverse osmosis membrane filter core (2), so that the flushing pipeline (311), the water inlet end of the reverse osmosis membrane filter core (2) and the waste water end of the reverse osmosis membrane filter core (2) are sequentially communicated to form a flushing loop, and the water purifying device is capable of driving liquid in the flushing loop to circulate and flow; a dirt collecting member (8) arranged on the flushing loop and used for collecting dirt in the flushing loop.

2. The water purification apparatus according to claim 1, characterized by The water purifying device further comprises a waste water outlet pipeline (21) communicated with the waste water end of the reverse osmosis membrane filter core (2), the water inlet end of the flushing pipeline (311) is communicated with the waste water outlet pipeline (21), the water purifying device further comprises a flushing valve (312) arranged on the flushing pipeline (311) and used for controlling opening and closing of the flushing pipeline (311), and the dirt collecting member (8) is arranged on the waste water outlet pipeline (21) and / or the flushing pipeline (311); Alternatively, the water purifying device further comprises a waste water outlet pipeline (21) and a reversing valve (9), a first interface (91) of the reversing valve (9) is communicated with the waste water end of the reverse osmosis membrane filter core (2), a second interface (92) of the reversing valve (9) is communicated with the waste water outlet pipeline (21), and a third interface (93) of the reversing valve (9) is communicated with the water inlet end of the flushing pipeline (311), wherein the first interface (91) is selectively communicated with the second interface (92) or the third interface (93), and the dirt collecting member (8) is arranged on the flushing pipeline (311).

3. The water purification apparatus according to claim 1, characterized by The water purifying device further comprises a water inlet main pipeline (1) communicated with the water inlet end of the reverse osmosis membrane filter core (2), the water outlet end of the flushing pipeline (311) is communicated with the water inlet main pipeline (1), and the water purifying device further comprises a check member (314) arranged on the flushing pipeline (311) and capable of preventing water in the water inlet main pipeline (1) from flowing reversely into the flushing pipeline (311).

4. The water purification apparatus according to claim 1, characterized by The water purifying device further comprises a flow control member (7) arranged on the flushing loop and capable of adjusting water flow from the waste water end of the reverse osmosis membrane filter core (2) to the water inlet end of the reverse osmosis membrane filter core (2).

5. The water purification apparatus according to claim 1, characterized by The water purifying device further comprises a cleaning module (313) arranged on the flushing pipeline (311) and capable of delivering cleaning liquid to the water inlet end of the reverse osmosis membrane filter core (2) to clean the reverse osmosis membrane filter core (2); Alternatively, the dirt collecting member (8) has a feeding opening (81) and a storage cavity, the feeding opening (81) is communicated with the storage cavity, so that a user can put cleaning agent into the storage cavity through the feeding opening (81).

6. The water purification apparatus according to claim 5, characterized by The cleaning module (313) is arranged to allow water flow from the waste water end of the reverse osmosis membrane filter core (2) to the water inlet end of the reverse osmosis membrane filter core (2) when it is in the first working state, and to deliver cleaning liquid to the reverse osmosis membrane filter core (2) when it is in the second working state. And / or, the number of the flushing pipelines (311) is two, and the number of the cleaning modules (313) is also two and arranged one-to-one corresponding to the flushing pipelines (311).

7. The water purification apparatus according to claim 6, characterized by The cleaning module (313) comprises a shell (3131) with a containing cavity (3132) therein, and a cleaning agent (3137) feeding opening (3133) is arranged on the shell (3131) and communicates with the containing cavity (3132), and the cleaning agent (3137) can be fed into the containing cavity (3132) through the feeding opening (3133) when the cleaning module (313) is in the second working state. Alternatively, the cleaning module (313) comprises a shell (3131) with a water passing channel (3135) and a containing cavity (3132) therein, and a liquid inlet (31301) and a liquid outlet (31302) are arranged on the shell (3131) and communicate with the water passing channel (3135), and the containing cavity (3132) has an opening (3136), and a blocking member (3134) is arranged at the opening (3136) and can open or close the opening (3136).

8. The water purification apparatus according to claim 3, characterized by The water purification device comprises a booster pump (12), and the water outlet end of the flushing pipeline (311) communicates with the water inlet main pipeline (1) and is located at the upstream end of the booster pump (12), and the booster pump (12) can drive the liquid in the flushing circuit to circulate. Alternatively, the water purification device further comprises a circulating pump (6) arranged on the flushing circuit and used to drive the liquid in the flushing circuit to circulate.

9. The water purification apparatus according to any one of claims 1 to 8, characterized by, The water purification device further comprises a pre-filter unit (4) communicating with the water inlet main pipeline (1) of the water purification device, and the water outlet end of the flushing pipeline (311) is located at the downstream end of the pre-filter unit (4). And / or, the water purification device further comprises a pure water outlet pipe (5) and a pure water water member (51), the pure water water member (51) communicates 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.

10. The water purification apparatus according to claim 9, characterized by The water purification device further comprises a backflow pipe (23) and a backflow valve (231) arranged on the backflow pipe, one end of the backflow pipe (23) communicates with the pure water end of the reverse osmosis membrane filter core (2), the other end of the backflow pipe (23) communicates with the water inlet end of the reverse osmosis membrane filter core (2), 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). Alternatively, the water purification device further comprises a drain pipe (22) and a drain valve (221) arranged on the drain pipe (22), one end of the drain pipe (22) is communicated with the pure water end of the reverse osmosis membrane filter core (2), the other end of the drain pipe (22) is communicated with the wastewater outlet pipe (21) of the water purification device, and the drain valve (221) is arranged on the drain pipe (22) and used for controlling the on-off of the drain pipe (22).

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