Self-cleaning water purification system and water purifier

Abstract

The utility model discloses a self-cleaning water purification system and a water purifier wherein the self-cleaning water purification system comprises: a filter module, the filter module comprises a first filter element, the first filter element is used for filtering a water source to be filtered; the cleaning module comprises a first cavity and a second cavity which are mutually independent, the first cavity is used for storing an acidic cleaning agent, and the second cavity is used for storing an alkaline cleaning agent; the switch module comprises a plurality of switches, and at least one switch of the switch module is arranged at the water inlet of the cleaning module; and the control module is used for controlling the switch module so as to carry out alkaline cleaning on the first filter element by utilizing an alkaline cleaning agent and carry out acidic cleaning on the first filter element by utilizing an acidic cleaning agent. Therefore, by cleaning the first filter element, the effluent quality and flow of the self-cleaning water purification system can be improved, so that the service life of the filter element is prolonged, the replacement cost of the filter element is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a self-cleaning water purification system and a water purifier. Background Art

[0002] As people's quality of life improves, water purifiers are widely used in daily life. At present, the main selling model in the water purification market is the reverse osmosis water purifier, among which the core filtration unit of the reverse osmosis water purifier is the reverse osmosis filter element, which can filter out organic matter, grease, bacteria and ionic substances in the water. These filtered substances will be deposited on the membrane surface at the concentrated water end of the reverse osmosis membrane. Long-term deposition and precipitation will affect the water flow rate and water quality of the water purifier. In the related technology, household water purifiers usually directly replace the reverse osmosis filter element, which makes the replacement cost of the filter element high. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art to at least a certain extent. To this end, the first purpose of the utility model is to provide a self-cleaning water purification system, which can improve the water quality and flow rate of the self-cleaning water purification system by cleaning the first filter element, thereby increasing the service life of the filter element and reducing the replacement cost of the filter element, thereby improving the user experience.

[0004] The second purpose of the utility model is to provide a water purifier.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the utility model proposes a self-cleaning water purification system, wherein the system includes: a filter module, the filter module includes a first filter element, and the first filter element is used to filter the water source to be filtered; a cleaning module, the cleaning module includes a first cavity and a second cavity that are independent of each other, the first cavity is used to store an acidic cleaning agent, the second cavity is used to store an alkaline cleaning agent, and the water outlet of the first cavity is connected to the water inlet or water outlet of the second cavity, and the water outlet of the second cavity is connected to the water inlet of the first filter element; a switch module, the switch module includes a plurality of switches, at least one switch of the switch module is arranged at the water inlet of the cleaning module; a control module, the control module is used to control the switch module so as to perform alkaline cleaning on the first filter element using the alkaline cleaning agent and perform acid cleaning on the first filter element using the acidic cleaning agent.

[0006] According to the self-cleaning water purification system proposed in the example of the utility model, by cleaning the first filter element, the water quality and flow rate of the self-cleaning water purification system can be improved, thereby increasing the service life of the filter element and reducing the replacement cost of the filter element, thereby improving the user experience.

[0007] In addition, the self-cleaning water purification system according to the utility model may also include the following additional technical features:

[0008] In some examples, the first filter element includes a filtered water outlet and a wastewater outlet, the switch module includes a first switch, a second switch, and a third switch, the first switch is arranged at the water inlet of the first cavity, the second switch is arranged at the water inlet of the second cavity, and the third switch is arranged at the wastewater outlet of the first filter element.

[0009] In some examples, the filtration module also includes a second filter element, a first water inlet of the second filter element is connected to the water outlet of the water source to be filtered, a first water outlet of the second filter element is connected to the water inlet of the second cavity through the second switch, a second water inlet of the second filter element is connected to the filtered water outlet of the first filter element, and a second water outlet of the second filter element is connected to the water inlet of the first cavity through the first switch.

[0010] In some examples, the control module is specifically used to: control the second switch and the third switch to be turned on and the first switch to be turned off, so as to perform alkaline cleaning on the first filter element using the alkaline cleaning agent; when the alkaline cleaning is completed, control the first switch to be turned on, so as to perform acid cleaning on the first filter element using the acid cleaning agent.

[0011] In some examples, the system also includes a boost pump, which is arranged between the water outlet of the second cavity and the water inlet of the first filter element, and the control module is also used to: obtain the time length that the first filter element is in the alkaline cleaning stage; when the time length is greater than or equal to a first preset time length, control the boost pump to turn on, and when the boost pump is turned on for a time length greater than or equal to a second preset time length, complete the alkaline cleaning of the first filter element.

[0012] In some examples, when the alkaline cleaning is completed, the control module is also used to: control the third switch to close, and when the closing time of the third switch is greater than or equal to the third preset time, control the third switch to remain open for a fourth preset time to complete the acid cleaning of the first filter element.

[0013] In some examples, at the end of the acid cleaning stage, consumption of the cleaning agent in the cleaning module is completed.

[0014] In some examples, the system also includes a drinking water outlet and a pipeline machine interface, the switch module also includes a fourth switch and a high-pressure switch, the fourth switch is arranged between the drinking water outlet and the high-pressure switch, the high-pressure switch is also connected to the second water outlet of the second filter element, and the pipeline machine interface is connected to the second water outlet of the second filter element, and the control module is also used to: control the second switch, the fourth switch and the high-pressure switch to be turned on, and the first switch and the third switch to be turned off, so as to use the first filter element and the second filter element to filter the water source to be filtered, and then discharge water through the drinking water outlet or the pipeline machine.

[0015] In some examples, the system also includes a purified water outlet, the switch module also includes a fifth switch, the fifth switch is arranged between the purified water outlet and the first outlet of the second filter element, and the control module is also used to: control the fifth switch to be turned on, and the first switch, the second switch and the third switch to be turned off, so as to use the second filter element to filter the water source to be filtered and then discharge water through the purified water outlet.

[0016] In some examples, the system also includes a first one-way valve and a second one-way valve, wherein the water inlet of the first one-way valve is connected to the second water outlet of the second filter element, and the water outlet of the first one-way valve is connected to one end of the first switch; the water inlet of the second one-way valve is connected to the other end of the first switch, and the water outlet of the second one-way valve is connected to the water inlet of the first cavity.

[0017] In order to achieve the above-mentioned purpose, a second embodiment of the present invention provides a water purifier, including the self-cleaning water purification system of the aforementioned embodiment of the present invention.

[0018] According to the water purifier of the embodiment of the utility model, by adopting the self-cleaning water purification system of the above embodiment of the utility model to clean the first filter element, the water quality and flow rate of the self-cleaning water purification system can be improved, thereby increasing the service life of the filter element and reducing the replacement cost of the filter element, thereby improving the user experience.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a block diagram of a self-cleaning water purification system according to an embodiment of the utility model;

[0021] Figure 2 It is a waterway structure diagram of a self-cleaning system according to a specific embodiment of the utility model;

[0022] Figure 3 It is a block diagram of a water purifier according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] The first filter element 11, the first cavity 12, the second cavity 13, the first switch 14, the second switch 15, the third switch 16, the second filter element 17, the booster pump 18, the fourth switch 19, the fifth switch 21, the first one-way valve 22, the second one-way valve 23, and the high-pressure switch 24. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The self-cleaning water purification system and water purifier according to the embodiment of the utility model will be described below with reference to the accompanying drawings.

[0027] Figure 1 It is a block diagram of a self-cleaning water purification system according to an embodiment of the utility model.

[0028] Specifically, in some embodiments of the present invention, Figure 1 As shown, the self-cleaning water purification system 100 includes a filter module 10 , a cleaning module 20 , a switch module 30 and a control module 40 .

[0029] The filter module 10 includes a first filter element, which is used to filter the water source to be filtered; the cleaning module 20 includes a first cavity and a second cavity which are independent of each other, the first cavity is used to store an acidic cleaning agent, the second cavity is used to store an alkaline cleaning agent, and the water outlet of the first cavity is connected to the water inlet or outlet of the second cavity, and the water outlet of the second cavity is connected to the water inlet of the first filter element; the switch module 30 includes a plurality of switches, at least one switch of the switch module is arranged at the water inlet of the cleaning module; the control module 40 is used to control the switch module to perform alkaline cleaning on the first filter element using an alkaline cleaning agent and acid cleaning on the first filter element using an acidic cleaning agent. The water source to be filtered can be tap water, and the plurality of switches can be one switch, two switches or five switches. The present invention may not specifically limit the number of the plurality of switches, that is, the plurality of switches are at least one switch.

[0030] It should be noted that if Figure 2As shown, the cleaning module includes a first cavity 12 and a second cavity 13, the first cavity 12 is used to store an acidic cleaning agent, the second cavity 13 is used to store an alkaline cleaning agent, the water outlet of the first cavity 12 is connected to the water inlet of the second cavity 13, and the water outlet of the second cavity 13 is connected to the water inlet of the first filter element 11. Among them, the first filter element 11 is a reverse osmosis filter element. When cleaning, alkaline cleaning is performed first, and the water source is mixed with the alkaline cleaning agent in the second cavity 13 through the water inlet of the second cavity 13 to generate alkaline cleaning water, and flows into the first filter element 11 through the water outlet of the second cavity 13, thereby performing alkaline cleaning on the first filter element 11. After the alkaline cleaning is completed, the water source is mixed with the acidic cleaning agent in the first cavity 12 through the water inlet of the first cavity 12 to generate acidic cleaning water, and flows into the water inlet of the second cavity 13 through the water outlet of the first cavity 12, and then flows out through the water outlet of the second cavity 13 to perform acidic cleaning on the first filter element 11.

[0031] Optionally, in some embodiments, the water outlet of the first cavity 12 is connected to the water outlet of the second cavity 13. When cleaning, alkaline cleaning is performed first. The water source is mixed with the alkaline cleaning agent in the second cavity 13 through the water inlet of the second cavity 13 to generate alkaline cleaning water, and flows into the first filter element 11 through the water outlet of the second cavity 13, thereby performing alkaline cleaning on the first filter element 11. After the alkaline cleaning is completed, the water source is mixed with the acidic cleaning agent in the first cavity 12 through the water inlet of the first cavity 12 to generate acidic cleaning water, and flows into the first filter element 11 through the water outlet of the first cavity 12, thereby performing acidic cleaning on the first filter element 11.

[0032] Further, in some embodiments of the present invention, Figure 2 As shown, the first filter element 11 includes a filtered water outlet and a wastewater outlet, the switch module includes a first switch 14, a second switch 15 and a third switch 16, the first switch 14 is arranged at the water inlet of the first cavity 12, the second switch 15 is arranged at the water inlet of the second cavity 13, and the third switch 16 is arranged at the wastewater outlet of the first filter element 11.

[0033] Specifically, in this embodiment, in the cleaning mode, alkaline cleaning is first performed, the second switch 15 and the third switch 16 are controlled to be turned on, and the first switch 14 is turned off, and the water source to be filtered flows through the second switch 15 and flows into the water inlet of the second cavity 13, and mixes with the alkaline cleaning agent in the second cavity 13 to generate alkaline cleaning water, and then the alkaline cleaning water flows into the first filter element 11 through the water outlet of the second cavity 13 to perform alkaline cleaning on the first filter element 11, and pollutants such as organic matter, colloids, and bacterial debris deposited on the membrane surface of the first filter element 11 can be stripped from the membrane surface, and the generated wastewater flows through the wastewater outlet of the first filter element 11 to the third switch 16 and then is discharged. Among them, the wastewater can be concentrated water.

[0034] After the alkaline cleaning is completed, the acid cleaning is performed, the first switch 14 and the second switch 15 are controlled to be turned on, and the third switch 16 is closed, the filtered water flows through the second switch 15 and flows into the water inlet of the second cavity 13, and flows from the water outlet of the second cavity 13 to the water inlet of the first filter element 11, and then flows out from the filtered water outlet of the first filter element 11, and flows to the water inlet of the first cavity 12 through the first switch 14, thereby mixing with the acidic cleaning agent in the first cavity 12 to generate acidic cleaning water, and then flows to the water inlet of the second cavity 13 through the water outlet of the first cavity 12, and The water flows into the first filter element 11 through the water outlet of the second cavity 13 to clean the first filter element 11 with acidic water, which can dissolve the scale deposited on the membrane surface and membrane pores of the first filter element 11. In addition, the filtered water filtered by the first filter element 11 flows out from the filtered water outlet, and the acidic cleaning water generated after the above cycle flows into the first filter element 11 from the water inlet of the first filter element 11 again, and the first filter element 11 is continuously cleaned with acidic water. After multiple cycles, the third switch 16 is opened to allow the generated wastewater to flow to the third switch 16 through the wastewater outlet of the first filter element 11 and then be discharged.

[0035] Furthermore, in some embodiments of the present invention, the filtration module also includes a second filter element 17, a first water inlet of the second filter element 17 is connected to a water outlet of the water source to be filtered, a first water outlet of the second filter element 17 is connected to a water inlet of the second cavity 13 via a second switch 15, a second water inlet of the second filter element 17 is connected to a filtered water outlet of the first filter element 11, and a second water outlet of the second filter element 17 is connected to a water inlet of the first cavity 12 via a first switch 14.

[0036] Specifically, in the cleaning mode of this embodiment, alkaline cleaning is first performed, the second switch 15 and the third switch 16 are controlled to be turned on, and the first switch 14 is turned off, the water source to be filtered flows into the second filter element 17 through the first water inlet of the second filter element 17, and purified water is obtained after being filtered by the second filter element 17, the purified water flows out through the water outlet of the second filter element 17, and flows into the water inlet of the second cavity 13 through the second switch 15, and then mixes with the alkaline cleaning agent in the second cavity 13 to generate alkaline cleaning water, and the alkaline cleaning water flows into the first filter element 11 through the water outlet of the second cavity 13 to perform alkaline cleaning on the first filter element 11, and pollutants such as organic matter, colloids, and bacterial debris deposited on the membrane surface of the first filter element 11 can be stripped from the membrane surface, and the generated wastewater flows to the third switch 16 through the wastewater outlet of the first filter element 11 and then discharged. Among them, the second filter element 17 can preferably be a front and rear composite filter element.

[0037] After the alkaline cleaning is completed, the acid cleaning is performed, the first switch 14 and the second switch 15 are controlled to be turned on, and the third switch 16 is closed, the water source to be filtered flows into the second filter element 17 through the first water inlet of the second filter element 17, and is filtered by the second filter element 17 to obtain purified water, which flows out through the water outlet of the second filter element 17, and flows into the water inlet of the second cavity 13 through the second switch 15, and flows from the water outlet of the second cavity 13 to the water inlet of the first filter element 11, and then flows out through the filtered water outlet of the first filter element 11, flows into the second water inlet of the second filter element 17, and then flows out from the second water outlet of the second filter element 17, thereby flowing to the water inlet of the first cavity 12 through the first switch 14, and is connected with the first cavity 12. The acidic cleaning agents in 12 are mixed to generate acidic cleaning water, which then flows through the water outlet of the first cavity 12 to the water inlet of the second cavity 13, and flows into the first filter element 11 through the water outlet of the second cavity 13, so as to clean the inlet water of the first filter element with acidic water, and the scale deposited on the membrane surface and the membrane pores of the first filter element 11 can be dissolved. In addition, the filtered water filtered by the first filter element 11 flows out from the filtered water outlet, and the acidic cleaning water generated after the above cycle flows into the first filter element 11 from the water inlet of the first filter element 11 again, and the first filter element 11 is continuously cleaned with acidic water. After multiple cycles, the third switch 16 is opened to allow the generated wastewater to flow through the wastewater outlet of the first filter element 11 to the third switch 16 and then be discharged.

[0038] Furthermore, in some embodiments of the present invention, the control module is specifically used to: control the second switch 15 and the third switch 16 to be turned on and the first switch 14 to be turned off, so as to utilize an alkaline cleaning agent to generate alkaline cleaning water to perform alkaline cleaning on the first filter element 11; when the alkaline cleaning is completed, control the first switch 14 to be turned on, so as to utilize an acidic cleaning agent to generate acidic cleaning water to perform acidic cleaning on the first filter element 11.

[0039] Specifically, in this embodiment, in the cleaning mode, the second switch 15 and the third switch 16 are controlled to be turned on and the first switch 14 is turned off. The water source to be filtered flows through the second switch 15 and flows into the water inlet of the second cavity 13, and is mixed with the alkaline cleaning agent in the second cavity 13 to generate alkaline cleaning water. Then, the alkaline cleaning water flows into the first filter element 11 through the water outlet of the second cavity 13 to perform alkaline cleaning on the first filter element 11. After the alkaline cleaning is completed, the first switch 14 is controlled to be turned on, and the water source to be filtered flows through the second switch 15 and then flows into the water inlet of the second cavity 13, and flows from the water outlet of the second cavity 13 to the water inlet of the first filter element 11, and then flows out from the filtered water outlet of the first filter element 11, and flows to the water inlet of the first cavity 12 through the first switch 14, thereby mixing with the acidic cleaning agent in the first cavity 12 to generate acidic cleaning water, and then flows through the water outlet of the first cavity 12 to the water inlet of the second cavity 13, and flows into the first filter element 11 through the water outlet of the second cavity 13, so as to perform acidic water cleaning on the first filter element 11.

[0040] Furthermore, in some embodiments of the present invention, the system also includes a boost pump 18, which is arranged between the water outlet of the second cavity 13 and the water inlet of the first filter element 11, and the control module is also used to: obtain the duration of the first filter element 11 in the alkaline cleaning stage; when the duration is greater than or equal to the first preset duration, control the boost pump 18 to turn on, and when the boost pump 18 is turned on for a duration greater than or equal to the second preset time, complete the alkaline cleaning of the first filter element 11.

[0041] Specifically, in this embodiment, a timer can be installed to obtain the duration that the first filter element 11 is in the alkaline cleaning stage through the timer recording. When the duration is greater than or equal to the first preset duration, the boost pump 18 is controlled to be turned on to increase the water flow into the first filter element 11, and ensure that the cleaning agent in the second cavity 13 is consumed. At the same time, the flushing force on the filter membrane surface of the first filter element 11 is also increased to improve the cleaning effect. The duration that the boost pump 18 is turned on is recorded by the timer, and the alkaline cleaning of the first filter element 11 is completed when the duration that the boost pump 18 is turned on is greater than or equal to the second preset duration.

[0042] It should be noted that the first preset time length may preferably range from 10 minutes to 15 minutes, and the second preset time length may preferably range from 5 minutes to 10 minutes. In addition, the present invention may not specifically limit the first preset time length and the value range of the first preset time length.

[0043] Furthermore, in some embodiments of the present invention, when alkaline cleaning is completed, the control module is also used to: control the third switch 16 to close, and when the closing time of the third switch 16 is greater than or equal to the third preset time, control the third switch 16 to continue to open for a fourth preset time to complete the acid cleaning of the first filter element 11.

[0044] Specifically, in this implementation, a timer can be installed. When the alkaline cleaning is completed, the first switch 14 and the second switch 15 are controlled to be turned on, and the third switch 16, the fourth switch 19 and the fifth switch 21 are closed. The water source flowing into the first cavity 12 is mixed with the cleaning agent in the first cavity 12. The cleaning water flows into the second cavity 13 after merging with the water flow flowing out of the first water outlet of the second filter element 17 through the water outlet of the first cavity 12. Under the boosting action of the booster pump 18, the water flows into the first filter element 11 to clean the first filter element 11. Washing, in addition, the filtered water filtered by the first filter element 11 flows out from the filtered water outlet, and flows into the second filter element 17 through the second water inlet of the second filter element 17, and then flows out through the second water outlet of the second filter element 17, and flows into the first cavity 12 through the first switch 14, and the cycle is repeated. The closing time of the third switch 16 is obtained by the timer, and when the closing time of the third switch 16 is greater than or equal to the third preset time, the third switch 16 is controlled to be continuously opened for the fourth preset time to complete the acid cleaning of the first filter element 11.

[0045] It should be noted that the value range of the third preset time length can preferably be 20 minutes to 25 minutes, and the value range of the fourth preset time length can preferably be 5 minutes to 10 minutes. In addition, the utility model may not specifically limit the value range of the third preset time length and the fourth preset time length.

[0046] Furthermore, in some embodiments of the present invention, at the end of the acid cleaning stage, the consumption of the cleaning agent in the cleaning module is completed.

[0047] Furthermore, in some embodiments of the present invention, the system also includes a drinking water outlet and a pipeline machine interface, the switch module also includes a fourth switch 19 and a high-pressure switch 24, the fourth switch 19 is arranged between the drinking water outlet and the high-pressure switch 24, the high-pressure switch 24 is also connected to the second water outlet of the second filter element 17, and the pipeline machine interface is connected to the second water outlet of the second filter element 17, and the control module is also used to: control the second switch 15, the fourth switch 19 and the high-pressure switch 24 to be turned on, and the first switch 14 and the third switch 16 to be turned off, so as to use the first filter element 11 and the second filter element 17 to filter the water source to be filtered, and then discharge water through the drinking water outlet or the pipeline machine.

[0048] Specifically, in this embodiment, the high-pressure switch 24 is used to power on the self-cleaning water purification system. After the cleaning agent in the cleaning module is exhausted, the second switch 15 and the fourth switch 19 are controlled to be opened, and the first switch 14 and the third switch 16 are closed. The water to be filtered flows into the second filter element 17 through the first water inlet of the second filter element 17, flows out from the second water outlet of the second filter element 17 after being filtered by the pre-filter element in the second filter element 17, flows into the water inlet of the first filter element 11 through the second cavity 13 of the cleaning module and the booster pump 18, flows out from the filtered water outlet of the first filter element 11 after being filtered by the first filter element 11, flows into the second filter element 17 through the second water inlet of the second filter element 17, flows out from the second water outlet of the second filter element 17 after being filtered by the post-filter element in the second filter element 17, flows into the pipeline machine, and flows to the drinking water outlet through the fourth switch 19.

[0049] Furthermore, in some embodiments of the present invention, the system also includes a purified water outlet, the switch module also includes a fifth switch 21, the fifth switch 21 is arranged between the purified water outlet and the first water outlet of the second filter element 17, and the control module is also used to: control the fifth switch 21 to be turned on, and the first switch 14, the second switch 15 and the third switch 16 to be turned off, so as to use the second filter element 17 to filter the water source to be filtered and then discharge water through the purified water outlet.

[0050] Specifically, in this embodiment, after the cleaning agent in the cleaning module is in a depleted state, the fifth switch 21 is controlled to be turned on, and the first switch 14, the second switch 15, the third switch 16 and the fourth switch 19 are turned off, and the water to be filtered flows into the second filter element 17 through the first water inlet of the second filter element 17, is filtered by the pre-filter element in the second filter element 17, flows out from the second water outlet of the second filter element 17, and flows to the purified water outlet after passing through the fifth switch 21.

[0051] Furthermore, in some embodiments of the present invention, the system also includes a first one-way valve 22 and a second one-way valve, the water inlet of the first one-way valve 22 is connected to the second water outlet of the second filter element 17, and the water outlet of the first one-way valve 22 is connected to one end of the first switch 14; the water inlet of the second one-way valve is connected to the other end of the first switch 14, and the water outlet of the second one-way valve is connected to the water inlet of the first cavity 12.

[0052] Specifically, in this embodiment, the first one-way valve 22 and the second one-way valve are provided to ensure the flow direction of the water flow, that is, the water flow can only flow from the water outlet of the second filter element 17 into the water inlet of the first one-way valve 22, and flow out from the water outlet of the first one-way valve 22, flow through the first switch 14 and flow into the water inlet of the second one-way valve, and flow from the water outlet of the second one-way valve into the water inlet of the first cavity 12. In addition, a high-pressure switch 24 is provided between the first one-way valve 22 and the fourth switch 19, which is used to power on the self-cleaning water purification system.

[0053] In summary, in a specific embodiment of the utility model, in the cleaning mode, alkaline cleaning is first performed, the second switch 15 and the third switch 16 are controlled to be turned on, and the first switch 14, the fourth switch 19 and the fifth switch 21 are turned off, and the filtered water flows through the second switch 15 and flows into the water inlet of the second cavity 13, and is mixed with the alkaline cleaning agent in the second cavity 13 to generate alkaline cleaning water, and then the alkaline cleaning water flows into the first filter element 11 through the water outlet of the second cavity 13 to perform alkaline cleaning on the first filter element 11, and when the cleaning time reaches the first preset time, the first filter element 11 is cleaned. When the booster pump 18 is turned on, the water flow rate into the first filter element 11 is increased, and the cleaning agent in the second cavity 13 is consumed. At the same time, the flushing force on the filter membrane surface of the first filter element 11 is increased to improve the cleaning effect. When the booster pump 18 is turned on for a time greater than or equal to the second preset time, the alkaline cleaning of the first filter element 11 is completed, and then the organic matter, colloid, bacterial debris and other pollutants deposited on the membrane surface of the first filter element 11 can be stripped off from the membrane surface, and the generated wastewater flows through the wastewater outlet of the first filter element 11 to the third switch 16 and then discharged. Among them, the first preset time can be preferably in the range of 10 minutes to 15 minutes, and the second preset time can be preferably in the range of 5 minutes to 10 minutes. In addition, the utility model may not specifically limit the first preset time and the value range of the first preset time.

[0054] After the alkaline cleaning is completed, the acid cleaning is performed, the first switch 14 and the second switch 15 are controlled to be turned on, and the third switch 16, the fourth switch 19 and the fifth switch 21 are closed, the filtered water flows through the second switch 15 and flows into the water inlet of the second cavity 13, and flows from the water outlet of the second cavity 13 to the water inlet of the first filter element 11, and then flows from the filtered water outlet of the first filter element 11 into the second water inlet of the second filter element 17, and flows out from the second water outlet of the second filter element 17, flows to the water inlet of the first cavity 12 through the first switch 14, thereby mixing with the acidic cleaning agent in the first cavity 12 to generate acidic cleaning water, and then flows through the water outlet of the first cavity 12 and the first outlet of the first filter element 11. The water flows out of the water outlet merge and flow into the water inlet of the second cavity 13, and then flow into the first filter element 11 through the water outlet of the second cavity 13, so as to clean the first filter element 11 with acidic water, and the scale deposited on the membrane surface and the membrane pores of the first filter element 11 can be dissolved. In addition, the filtered water filtered by the first filter element 11 flows out from the filtered water outlet, and in this cycle, the closing time of the third switch 16 is obtained by the timer, and when the closing time of the third switch 16 is greater than or equal to the third preset time, the third switch 16 is controlled to be continuously opened for a fourth preset time to complete the acid cleaning of the first filter element 11, so that the generated wastewater flows to the third switch 16 through the wastewater outlet of the first filter element 11 and is discharged. Among them, the value range of the third preset time can be preferably 20 minutes to 25 minutes, and the value range of the fourth preset time can be preferably 5 minutes to 10 minutes. In addition, the utility model may not specifically limit the value range of the third preset time and the fourth preset time.

[0055] At the end of the secondary cleaning stage, the consumption of the cleaning agent in the cleaning module is completed, and the second switch 15 and the fourth switch 19 can be controlled to be opened, and the first switch 14, the third switch 16 and the fifth switch 21 can be controlled to be closed, and the water to be filtered flows into the second filter element 17 through the first water inlet of the second filter element 17, flows out from the second water outlet of the second filter element 17 after being filtered by the pre-filter element in the second filter element 17, and flows into the water inlet of the first filter element 11 through the second cavity 13 of the cleaning module and the booster pump 18, flows out from the filtered water outlet of the first filter element 11 after being filtered by the first filter element 11, and flows into the second filter element 17 through the second water inlet of the second filter element 17, flows out from the second water outlet of the second filter element 17 after being filtered by the post-filter element in the second filter element 17, thereby flowing into the pipeline machine, and flows to the drinking water outlet through the fourth switch 19. The fifth switch 21 can be controlled to be turned on, and the first switch 14, the second switch 15, the third switch 16 and the fourth switch 19 can be controlled to be turned off. The water source to be filtered flows into the second filter element 17 through the first water inlet of the second filter element 17, is filtered by the pre-filter element in the second filter element 17, flows out from the second water outlet of the second filter element 17, and flows to the purified water outlet after passing through the fifth switch 21.

[0056] It should be noted that the first switch 14, the second switch 15, the third switch 16, the fourth switch 19 and the fifth switch 21 can preferably be solenoid valves. In addition, the utility model may not specifically limit the selection of the first switch 14, the second switch 15, the third switch 16, the fourth switch 19 and the fifth switch 21.

[0057] In summary, according to the self-cleaning water purification system of the embodiment of the utility model, by cleaning the first filter element, the water quality and flow rate of the self-cleaning water purification system can be improved, thereby increasing the service life of the filter element and reducing the replacement cost of the filter element, thereby improving the user experience.

[0058] Figure 3 It is a block diagram of a water purifier according to an embodiment of the utility model.

[0059] Specifically, Figure 3 As shown, the water purifier 1000 includes the self-cleaning water purification system 100 of the above embodiment of the utility model.

[0060] According to the water purifier of the embodiment of the utility model, by adopting the self-cleaning water purification system of the above embodiment of the utility model to clean the first filter element, the water quality and flow rate of the self-cleaning water purification system can be improved, thereby increasing the service life of the filter element and reducing the replacement cost of the filter element, thereby improving the user experience.

[0061] In addition, other structures and functions of the water purifier of the embodiment of the utility model are known to those skilled in the art and will not be described in detail here to reduce redundancy.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A self-cleaning water purification system, characterized in that: The system comprises: A filter module, the filter module comprising a first filter element, the first filter element is used to filter the water source to be filtered; A cleaning module, the cleaning module comprising a first cavity and a second cavity which are independent of each other, the first cavity is used to store an acidic cleaning agent, the second cavity is used to store an alkaline cleaning agent, and the water outlet of the first cavity is connected to the water inlet or the water outlet of the second cavity, and the water outlet of the second cavity is connected to the water inlet of the first filter element; A switch module, the switch module comprising a plurality of switches, at least one switch of the switch module being arranged at the water inlet of the cleaning module; A control module is used to control the switch module so as to perform alkaline cleaning on the first filter element using the alkaline cleaning agent and perform acid cleaning on the first filter element using the acid cleaning agent.

2. The self-cleaning water purification system according to claim 1, characterized in that: The first filter element includes a filtered water outlet and a wastewater outlet, the switch module includes a first switch, a second switch and a third switch, the first switch is arranged at the water inlet of the first cavity, the second switch is arranged at the water inlet of the second cavity, and the third switch is arranged at the wastewater outlet of the first filter element.

3. The self-cleaning water purification system according to claim 2, characterized in that: The filtration module also includes a second filter element, a first water inlet of the second filter element is connected to the water outlet of the water source to be filtered, a first water outlet of the second filter element is connected to the water inlet of the second cavity through the second switch, a second water inlet of the second filter element is connected to the filtered water outlet of the first filter element, and a second water outlet of the second filter element is connected to the water inlet of the first cavity through the first switch.

4. The self-cleaning water purification system according to claim 3, characterized in that: The control module is specifically used for: Controlling the second switch and the third switch to be turned on and the first switch to be turned off, so as to perform alkaline cleaning on the first filter element using the alkaline cleaning agent; When the alkaline cleaning is completed, the first switch is controlled to be turned on to perform acid cleaning on the first filter element using the acid cleaning agent.

5. The self-cleaning water purification system according to claim 4, characterized in that: The system further includes a booster pump, which is disposed between the water outlet of the second cavity and the water inlet of the first filter element. The control module is further used for: Obtaining the duration of the first filter element being in the alkaline cleaning stage; When the duration is greater than or equal to a first preset duration, the boost pump is controlled to be turned on, and when the boost pump is turned on for a duration greater than or equal to a second preset duration, the alkaline cleaning of the first filter element is completed.

6. The self-cleaning water purification system according to claim 4, characterized in that: When the alkaline cleaning is completed, the control module is further used to: The third switch is controlled to be closed, and when the closing time of the third switch is greater than or equal to the third preset time, the third switch is controlled to be continuously opened for a fourth preset time to complete the acid cleaning of the first filter element.

7. The self-cleaning water purification system according to claim 6, characterized in that: At the end of the acid cleaning stage, the consumption of the cleaning agent in the cleaning module is completed.

8. The self-cleaning water purification system according to claim 7, characterized in that: The system further includes a drinking water outlet and a pipeline machine interface, the switch module further includes a fourth switch and a high-pressure switch, the fourth switch is arranged between the drinking water outlet and the high-pressure switch, the high-pressure switch is also connected to the second water outlet of the second filter element, the pipeline machine interface is connected to the second water outlet of the second filter element, and the control module is also used for: The second switch, the fourth switch and the high-pressure switch are controlled to be turned on, and the first switch and the third switch are controlled to be turned off, so that the first filter element and the second filter element are used to filter the water source to be filtered, and then the water is discharged through the drinking water outlet or pipeline machine.

9. The self-cleaning water purification system according to claim 7, characterized in that: The system further includes a purified water outlet, the switch module further includes a fifth switch, the fifth switch is arranged between the purified water outlet and the first water outlet of the second filter element, and the control module is further used for: The fifth switch is controlled to be turned on, and the first switch, the second switch and the third switch are controlled to be turned off, so that the water source to be filtered is filtered by the second filter element and then the water is discharged through the purified water outlet.

10. The self-cleaning water purification system according to any one of claims 3 to 9, characterized in that: The system also includes a first one-way valve and a second one-way valve, wherein the water inlet of the first one-way valve is connected to the second water outlet of the second filter element, and the water outlet of the first one-way valve is connected to one end of the first switch; the water inlet of the second one-way valve is connected to the other end of the first switch, and the water outlet of the second one-way valve is connected to the water inlet of the first cavity.

11. A water purifier, characterized in that: A self-cleaning water purification system comprising any one of claims 1-10.

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