CN116102122A - Water purification system and flushing control method and device thereof - Google Patents
Water purification system and flushing control method and device thereof Download PDFInfo
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- CN116102122A CN116102122A CN202310033563.XA CN202310033563A CN116102122A CN 116102122 A CN116102122 A CN 116102122A CN 202310033563 A CN202310033563 A CN 202310033563A CN 116102122 A CN116102122 A CN 116102122A
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- water
- flushing
- membrane filter
- water purification
- purification system
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 520
- 238000000746 purification Methods 0.000 title claims abstract description 167
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 154
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000012528 membrane Substances 0.000 claims abstract description 179
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 117
- 239000002351 wastewater Substances 0.000 claims abstract description 72
- 230000001276 controlling effect Effects 0.000 claims description 43
- 239000002131 composite material Substances 0.000 claims description 39
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 2
- 230000037361 pathway Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000005406 washing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000008213 purified water Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000035622 drinking Effects 0.000 description 2
- 238000011403 purification operation Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention provides a water purification system and a flushing control method and device thereof. The flushing component is used for being in an opening state when the water purifying system executes flushing pretreatment so that water stored in the water purifying system circulates in the water purifying passage and the wastewater passage, and is in a closing state when the water purifying system executes flushing operation so as to block the water purifying passage. The invention utilizes the high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter core to reversely flow into the concentrated water port of the ultrafiltration membrane filter core so as to break up dirt in the ultrafiltration membrane filter core, is favorable for bringing out the dirt in the broken ultrafiltration membrane filter core when automatic flushing is carried out, has convenient cleaning operation, improves the flushing effect of the ultrafiltration membrane filter core, reduces flushing water consumption and further prolongs the service life of the water purification system.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a water purification system and a flushing control method and device thereof.
Background
At present, common water purifying equipment such as water purifiers on the market adopts manual disassembly to clean or uses tap water to automatically wash the ultrafiltration filter element for the cleaning of the pretreatment ultrafiltration filter element, and manual disassembly is difficult to clean and brings a plurality of inconveniences to consumers, and the automatic washing has the problems of poor washing effect, more washing water consumption and the like, and further influences the short service life of the filter element.
Disclosure of Invention
The invention provides a water purification system and a flushing control method and device thereof, which are used for solving the problems of inconvenient re-use of an ultrafiltration membrane filter core, poor flushing effect, high flushing water consumption and poor service life of the filter core of the existing water purification system.
In one aspect of the present invention, there is provided a water purification system,
comprises a water purifying passage and a wastewater passage which are composed of a raw water switch, an ultrafiltration membrane filter element, an RO membrane filter element and a wastewater switch, and a flushing assembly connected in series on the water purifying passage, wherein the water purifying passage and the wastewater passage are respectively connected with the ultrafiltration membrane filter element, the RO membrane filter element and the wastewater switch
The raw water switch is connected with the water inlet of the ultrafiltration membrane filter element, and the water producing port of the ultrafiltration membrane filter element is connected with the water inlet of the RO membrane filter element to form the water purifying passage;
the water concentration port of the RO membrane filter element and the water concentration port of the ultrafiltration membrane filter element are respectively connected with the wastewater switch to form the wastewater passage;
the flushing component is used for being started when the water purification system executes flushing pretreatment so that water stored in the water purification system circulates in the water purification passage and the wastewater passage, and high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter element reversely flows into the concentrated water port of the ultrafiltration membrane filter element so as to break up dirt in the ultrafiltration membrane filter element; when the water purification system performs flushing operation, the water purification system is closed to block the water purification passage, so that water entering the water inlet of the ultrafiltration membrane filter core from the raw water inlet discharges dirt in the broken ultrafiltration membrane filter core from the concentrated water inlet of the ultrafiltration membrane filter core, wherein when the water purification system performs flushing pretreatment, the raw water switch and the wastewater switch are simultaneously closed, and when the water purification system performs flushing operation, the raw water switch and the wastewater switch are simultaneously opened.
Further, the flushing assembly comprises a first switch and a steady pressure pump,
when the flushing assembly is started, the first switch and the pressure stabilizing pump are simultaneously started, and the circulation of water stored in the water purifying system is accelerated under the action of the pressure stabilizing pump, so that the water stored in the water purifying system circulates in the water purifying passage and the wastewater passage;
when the flushing assembly is closed, the first switch and the steady pump are simultaneously closed to block the water purifying passage.
Further, the first switch and the pressure stabilizing pump are connected between the water producing port of the ultrafiltration membrane filter element and the water inlet of the RO membrane filter element.
Further, the wastewater path further comprises a first unidirectional conduction device connected between the water concentration port of the RO membrane filter element and the water concentration port of the ultrafiltration membrane filter element, and the first unidirectional conduction device enables the water concentration port of the RO membrane filter element to be unidirectional conducted to the water concentration port of the ultrafiltration membrane filter element.
Further, the water purification branch circuit further comprises a composite filter element, a water producing port of the ultrafiltration membrane filter element is connected with a front water inlet of the composite filter element, a front water outlet of the composite filter element is connected with a water inlet of the RO membrane filter element, and a water producing port of the RO membrane filter element is connected with a rear water inlet of the composite filter element so as to form the water purification passage.
Further, the water purifying passage further comprises a second one-way conduction device connected between the water producing port of the RO membrane filter element and the rear filter element of the composite filter element, and the second one-way conduction device enables the water producing port of the RO membrane filter element to flow to the rear water inlet of the composite filter element in a one-way conduction mode.
Further, the water purifying passage further comprises a water purifying branch and a pure water branch, the water purifying branch is connected with the water producing port of the ultrafiltration membrane filter element and used for flowing water and purifying water, and the pure water branch is connected with the water producing port of the RO membrane filter element or the rear water outlet of the composite filter element and used for flowing out pure water.
Further, the water purifying passage also comprises a first flow detecting device connected to the water purifying branch and a second flow detecting device connected to the front water inlet of the composite filter element.
In another aspect of the present invention, there is provided a flush control method using the above water purification system, the method comprising:
when a flushing control instruction is received, controlling the water purification system to execute a flushing pretreatment operation, wherein the controlling the water purification system to execute the flushing pretreatment operation comprises: controlling a raw water switch and a waste water switch of the water purification system to be closed, controlling the flushing assembly to be opened so that water stored in the water purification system circulates in the water purification passage and the waste water passage, and enabling high-pressure concentrated water flowing out of a concentrated water port of the RO membrane filter element to reversely flow into a concentrated water port of the ultrafiltration membrane filter element so as to break up dirt in the ultrafiltration membrane filter element;
when the duration of the flushing pretreatment reaches a preset first duration, controlling the water purification system to execute flushing operation, wherein the controlling the water purification system to execute the flushing operation comprises the following steps: controlling a raw water switch and a waste water switch of the water purifying system to be opened, and controlling the flushing assembly to be closed so as to block the water purifying passage, so that water entering a water inlet of the ultrafiltration membrane filter core from a raw water inlet discharges dirt in the broken ultrafiltration membrane filter core from a concentrated water inlet of the ultrafiltration membrane filter core;
and stopping executing the flushing operation when the duration of the flushing operation reaches a preset second duration.
Further, after stopping the execution of the flushing operation when the duration of the flushing operation reaches a preset second duration, the method further includes:
and controlling the water purification system to repeatedly execute the flushing pretreatment operation and the flushing operation until the repeated execution times reach a first preset times.
In another aspect of the present invention, there is provided a flush control device applied to the above water purification system, the device comprising:
the flushing pretreatment control module is used for controlling the water purification system to execute flushing pretreatment operation when a flushing control instruction is received, and controlling the water purification system to execute the flushing pretreatment operation comprises the following steps: controlling a raw water switch and a waste water switch of the water purification system to be closed, controlling the flushing assembly to be opened so that water stored in the water purification system circulates in the water purification passage and the waste water passage, and enabling high-pressure concentrated water flowing out of a concentrated water port of the RO membrane filter element to reversely flow into a concentrated water port of the ultrafiltration membrane filter element so as to break up dirt in the ultrafiltration membrane filter element;
the flushing control module is used for controlling the water purification system to execute flushing operation when the duration of the flushing pretreatment reaches a preset first duration, and controlling the water purification system to execute flushing operation comprises the following steps: controlling a raw water switch and a waste water switch of the water purifying system to be opened, and controlling the flushing assembly to be closed so as to block the water purifying passage, so that water entering a water inlet of the ultrafiltration membrane filter core from a raw water inlet discharges dirt in the broken ultrafiltration membrane filter core from a concentrated water inlet of the ultrafiltration membrane filter core;
and the circulation control module is used for stopping executing the flushing operation when the duration of the flushing operation reaches a preset second duration.
The embodiment of the invention provides a water purification system and a flushing control method and device thereof, wherein the water purification system comprises a water purification passage and a wastewater passage which are formed by a raw water switch, an ultrafiltration membrane filter element, an RO membrane filter element and a wastewater switch, and a flushing assembly connected in series on the water purification passage. When the water purification system executes flushing pretreatment operation, the raw water switch and the waste water switch are simultaneously closed and the flushing assembly is started, so that water stored in the water purification system circulates in the water purification passage and the waste water passage, and high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter element reversely flows into the concentrated water port of the ultrafiltration membrane filter element to break up dirt in the ultrafiltration membrane filter element; when the water purification system executes flushing operation, the raw water switch and the waste water switch are simultaneously opened and closed to flush the assembly, so that water entering the water inlet of the ultrafiltration membrane filter core from the raw water inlet discharges dirt in the broken ultrafiltration membrane filter core from the water concentration port of the ultrafiltration membrane filter core. The invention utilizes the high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter core to reversely flow into the concentrated water port of the ultrafiltration membrane filter core so as to break up dirt in the ultrafiltration membrane filter core, is favorable for bringing out the dirt in the broken ultrafiltration membrane filter core when automatic flushing is carried out, has convenient cleaning operation, improves the flushing effect of the ultrafiltration membrane filter core, reduces flushing water consumption and further prolongs the service life of the water purification system.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic structural diagram of a water purification system according to an embodiment of the present invention;
FIG. 2 is a flow chart of water when a water purification system according to an embodiment of the present invention performs a rinsing pretreatment operation;
FIG. 3 is a flow chart of water when a water purification system according to an embodiment of the present invention performs a washing operation;
fig. 4 is a timing chart of a flushing control method of a water purification system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a flush control device of a water purification system according to an embodiment of the present invention;
the figure indicates:
1. a raw water switch; 2. an ultrafiltration membrane filter element; 3. a composite filter element; 4. RO membrane filter core; 5. a waste water switch; 6. a flushing assembly; 6.1, a first switch; 6.2, a stabilized pump; 7. a first unidirectional conductive device; 8. a second unidirectional conduction device; 9. a water purification branch; 10. a pure water branch; 11. a first flowmeter; 12. a second flowmeter, 13, a second switch;
501. flushing the pretreatment control module; 502. a flush control module; 503. and a circulation control module.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The embodiment of the invention provides a water purification system, fig. 1 is a schematic structural diagram of the water purification system provided by the embodiment of the invention, and as can be seen from fig. 1, the water purification system provided by the embodiment of the invention comprises a raw water switch 1, an ultrafiltration membrane filter core 2, a composite filter core 3, an RO membrane filter core 4, a wastewater switch 5, a flushing component 6, a first switch 6.1, a steady pressure pump 6.2, a first unidirectional conduction device 7, a second unidirectional conduction device 8, a water purification branch 9, a pure water branch 10, a first flowmeter 11, a second flowmeter 12 and a second switch 13.
It should be noted that the water purification system according to another embodiment of the present invention may not include a composite filter element, that is, the water purification system includes a raw water switch 1, an ultrafiltration membrane filter core 2, an RO membrane filter core 4, a wastewater switch 5, a flushing component 6, a first switch 6.1, a steady pressure pump 6.2, a first unidirectional conduction device 7, a second unidirectional conduction device 8, a water purification branch 9, a pure water branch 10, a first flowmeter 11, a second flowmeter 12, and a second switch 13.
Wherein, raw water switch 1, milipore filter core 2, compound filter core 3 (optional filter core), RO membrane filter core 4 and waste water switch 5 constitute water purification passageway and waste water passageway for when carrying out the water purification operation, the pure water that satisfies the demand through the water purification passageway flows out, and the waste water after carrying out the water purification operation and the waste water of discharging when wasing milipore filter core 2 through the waste water passageway discharge, raw water switch 1 is connected in the raw water mouth and is used for inflow raw water, and waste water switch 5 is connected in the waste water mouth and is used for outflow waste water.
Specifically, the raw water switch 1 is connected with the water inlet of the ultrafiltration membrane filter core 2, and the water outlet of the ultrafiltration membrane filter core 2 is connected with the water inlet of the RO membrane filter core 4 to form the water purifying passage.
Further, when the system comprises a composite filter element 3, the raw water switch 1 is connected with the water inlet of the ultrafiltration membrane filter element 2, the water outlet of the ultrafiltration membrane filter element 2 is connected with the front water inlet of the composite filter element 3, the front water outlet of the composite filter element 3 is connected with the water inlet of the RO membrane filter element 4, and the water outlet of the RO membrane filter element 4 is connected with the rear water inlet of the composite filter element 3 so as to form the water purifying passage.
Further, in the water purifying passage, the water purifying passage further comprises a water purifying branch 9 and a pure water branch 10, wherein the water purifying branch 9 is connected with the water producing port of the ultrafiltration membrane filter element 2 for flowing water and purifying water, and the pure water branch 10 is connected with the water producing port of the RO membrane filter element 4 or a rear water outlet of the composite filter element 3 for flowing out pure water. Specifically, when the water purification system comprises the composite filter element 3, the pure water branch 10 is connected to a rear water outlet of the composite filter element 3, and when the water purification system comprises the composite filter element 3, the pure water branch 10 is connected to a water outlet of the RO membrane filter element 4.
Further, the water purification branch 9 further comprises a water purification switch, not shown in fig. 1, and when the water purification switch is turned on, the purified water filtered through the ultrafiltration membrane cartridge 2 flows out. The pure water branch 10 further comprises a second switch 13, preferably said second switch 13 is a high voltage switch, and when the second switch 13 is opened, pure water filtered through the ultrafiltration membrane cartridge 2, the RO membrane cartridge 4 and the composite cartridge 3 (optional) flows out. Wherein, the purified water is filtered to remove impurities, suspended matters, bacteria, residual chlorine, pesticide smell, organic pollutants, heavy metals and other harmful substances, but retains minerals and microelements beneficial to human bodies. The purified water can not completely remove chemical pollutants in the water, and under the condition that the water quality is not good, direct drinking is not recommended. Pure water contains no beneficial trace elements except harmful substances in water and filtered microorganisms, bacteria, viruses and the like. The pure water is H2O molecules, and can reach the standard of direct drinking.
In addition, referring to fig. 1, it can be further known that when the water purification system produces water, raw water to be filtered flows into the water inlet of the ultrafiltration membrane filter element 2 from the raw water inlet through the raw water switch 1, flows out of the water producing port of the ultrafiltration membrane filter element 2 and flows into the front water inlet of the composite filter element 3 after being filtered through the ultrafiltration membrane filter element 2, flows out of the front water outlet of the composite filter element 3 and flows into the water inlet of the RO membrane filter element 4 after being filtered through the composite filter element 3, flows into the rear water inlet of the composite filter element 3 after being filtered through the RO membrane filter element 4, forms pure water after being filtered through the secondary filtration of the composite filter element 3, and flows out of the pure water branch 10 after being filtered when the second switch 13 on the pure water branch 10 is opened. The embodiment of the present invention only describes the direction of the flow of the purified water when the composite filter element 3 is included in the water purification system, and the direction of the flow of the purified water without the composite filter element is referred to the above embodiment.
Further, the water concentration port of the RO membrane filter core 4 and the water concentration port of the ultrafiltration membrane filter core 2 are respectively connected with the wastewater switch 5 to form the wastewater passage. When the RO membrane filter core 4 performs filtering operation, high-pressure concentrated water can be generated and flows out from a concentrated water port of the RO membrane filter core 4 through the waste water switch 5.
Further, the embodiment of the invention controls the circulation condition of the water flow passage in the water purifying system through the flushing assembly 6 so as to realize flushing pretreatment and flushing operation. The dirt in the ultrafiltration membrane filter core 2 is broken up by utilizing the high-pressure water generated by filtering of the RO membrane filter core 4 in the process of flushing pretreatment, and the dirt is washed away from the ultrafiltration membrane filter core 2 when the flushing operation is performed.
Specifically, the flushing component 6 is used for being opened when the water purification system performs flushing pretreatment so as to enable the water stored in the water purification system to circulate in the water purification passage and the wastewater passage, so that the high-pressure concentrated water flowing out of the concentrated water inlet of the RO membrane filter core 4 reversely flows into the concentrated water inlet of the ultrafiltration membrane filter core 2, and dirt in the ultrafiltration membrane filter core 2 is broken up; when the water purifying system executes flushing operation, the water purifying system is closed to block the water purifying passage, so that water entering the water inlet of the ultrafiltration membrane filter core 2 from the raw water inlet discharges dirt in the broken ultrafiltration membrane filter core 2 from the water concentrating inlet of the ultrafiltration membrane filter core 2.
Further, when the water purification system performs the washing pretreatment, the raw water switch 1 and the waste water switch 5 are simultaneously closed, and when the water purification system performs the washing operation, the raw water switch 1 and the waste water switch 5 are simultaneously opened.
Specifically, the flushing assembly 6 of the embodiment of the present invention includes a first switch 6.1 and a steady-pressure pump 6.2, where when the flushing assembly 6 is in an on state, the first switch 6.1 and the steady-pressure pump 6.2 are turned on simultaneously, and circulation of water stored in the water purification system is enabled under the action of the steady-pressure pump 6.2, so that water stored in the water purification system circulates in the water purification channel and the wastewater channel; when the flushing assembly 6 is closed, the first switch 6.1 and the regulated pump 6.2 are simultaneously closed to block the water purification passage.
Further, the first switch 6.1 and the pressure stabilizing pump 6.2 of the embodiment of the invention are connected between the water producing port of the ultrafiltration membrane filter core 2 and the water inlet of the RO membrane filter core 4.
It should be noted that, the first switch 6.1 and the stabilizing pump 6.2 in the embodiment of the present invention may be separately installed at any position between the water producing port of the ultrafiltration membrane filter core 2 and the water inlet of the RO membrane filter core 4.
Preferably, the first switch 6.1 and the pressure stabilizing pump 6.2 are connected in series and then connected in series between a front water outlet of the composite filter element 3 and a water inlet of the RO membrane filter element 4.
Fig. 2 schematically illustrates a water flow chart of a water purification system provided by the embodiment of the invention when a flushing pretreatment operation is performed, and referring to fig. 2, it can be known that when the water purification system performs the water purification pretreatment operation, a raw water port and a waste water port are closed at the same time, and a corresponding water purification port and a pure water port are also closed, and a pressure stabilizing pump 6.2 in the water purification assembly enables a water flow passage to circulate in the water purification system, and at the moment, high-pressure water flowing out of a water concentration port of an RO membrane filter core 4 cannot flow out of the waste water port and reversely flows into the water concentration port of an ultrafiltration membrane filter core 2 so as to break up dirt in the ultrafiltration membrane filter core 2.
Fig. 3 schematically illustrates a water flow path diagram of a water purification system provided by the embodiment of the present invention when a flushing operation is performed, and referring to fig. 3, it can be known that when the flushing operation is performed by the water purification system, a pressure stabilizing pump 6.2 and a first switch 6.1 in the water purification assembly are closed, a raw water port and a waste water port are simultaneously opened, and a corresponding water purification port and a pure water port are closed, at this time, because the first switch 6.1 is closed, water entering the ultrafiltration membrane filter element 2 cannot pass through the water purification path and can only flow out through a concentrated water port of the ultrafiltration membrane filter element 2, and at this time, raw water takes away dirt in the scattered ultrafiltration membrane filter element 2.
Further, the wastewater path of the embodiment of the invention further comprises a first unidirectional conduction device 7 connected between the water concentration port of the RO membrane filter element 4 and the water concentration port of the ultrafiltration membrane filter element 2, and the first unidirectional conduction device 7 enables the water concentration port of the RO membrane filter element 4 to be unidirectional conducted to the water concentration port of the ultrafiltration membrane filter element 2. By arranging the first one-way conduction device, water flowing out of the concentrated water port of the ultrafiltration membrane filter core 2 is prevented from reversely flowing into the concentrated water port of the RO membrane filter core 4.
Further, the water purifying passage of the embodiment of the invention further comprises a second unidirectional conduction device 8 connected between the water producing port of the RO membrane filter element 4 and the rear filter element of the composite filter element 3, and the second unidirectional conduction device 8 enables the water producing port of the RO membrane filter element 4 to flow to the rear water inlet of the composite filter element 3 in a unidirectional conduction manner.
Further, the water purifying passage according to the embodiment of the invention further comprises a first flow detecting device connected to the water purifying branch 9 and a second flow detecting device connected to the front water inlet of the composite filter element 3. The device is used for detecting the flow rate of water in water of the water purifying system.
Further, the water purification system according to the embodiment of the present invention further includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements steps in the following embodiments of the flushing control method of each water purification system when executing the computer program, such as S1 to S3 shown in fig. 4. Alternatively, the processor, when executing the computer program, performs the functions of the modules/units in the embodiments of the flushing control device of the water purification systems described below, such as the flushing pretreatment control module 501, the flushing control module 502, and the circulation control module 503 shown in fig. 5.
Fig. 4 is a flowchart of a method for controlling flushing of a water purification system according to an embodiment of the present invention, and the method for controlling flushing of a water purification system according to the present invention is described below with reference to fig. 4. The water purification system provided by the embodiment of the invention is the water purification system provided by the embodiment, and the flushing control method of the water purification system comprises the following steps:
s1, when a flushing control instruction is received, controlling the water purification system to execute a flushing pretreatment operation, wherein the controlling the water purification system to execute the flushing pretreatment operation comprises the following steps: the raw water switch 1 and the waste water switch 5 of the water purification system are controlled to be closed, the flushing assembly 6 is controlled to be opened so that water stored in the water purification system circulates in the water purification passage and the waste water passage, and high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter core 4 reversely flows into the concentrated water port of the ultrafiltration membrane filter core 2 so as to break up dirt in the ultrafiltration membrane filter core 2;
s2, when the duration of the flushing pretreatment reaches a preset first duration, controlling the water purification system to execute flushing operation, wherein the controlling the water purification system to execute the flushing operation comprises the following steps: the raw water switch 1 and the waste water switch 5 of the water purifying system are controlled to be opened, the flushing component 6 is controlled to be closed to block the water purifying passage, so that water entering the water inlet of the ultrafiltration membrane filter core 2 from the raw water inlet discharges dirt in the ultrafiltration membrane filter core 2 subjected to scattering treatment from the concentrated water inlet of the ultrafiltration membrane filter core 2;
and S3, stopping executing the flushing operation when the duration of the flushing operation reaches a preset second duration.
Further, in an embodiment of the present invention, after stopping the execution of the flushing operation when the duration of the flushing operation reaches a preset second duration, the method further includes: and controlling the water purification system to repeatedly execute the flushing pretreatment operation and the flushing operation until the repeated execution times reach a first preset times. The first preset times are set by the system and the user requirement, and the invention is not particularly limited.
For the purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated by one of ordinary skill in the art that the methodologies are not limited by the order of acts, as some acts may, in accordance with the methodologies, take place in other order or concurrently. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts are not necessarily required by the embodiments of the invention.
Fig. 5 is a schematic structural diagram of a flushing control device of a water purification system according to an embodiment of the present invention, and the flushing control device of the water purification system according to the present invention is described below with reference to fig. 5. The water purification system according to the embodiment of the present invention is the water purification system provided in the above embodiment, and the flushing control device of the water purification system of the present invention includes a flushing pretreatment control module 501, a flushing control module 502 and a circulation control module 503, wherein,
a flush pretreatment control module 501, configured to control the water purification system to perform a flush pretreatment operation when receiving a flush control instruction, where controlling the water purification system to perform a flush pretreatment operation includes: the raw water switch 1 and the waste water switch 5 of the water purification system are controlled to be closed, the flushing assembly 6 is controlled to be opened so that water stored in the water purification system circulates in the water purification passage and the waste water passage, and high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter core 4 reversely flows into the concentrated water port of the ultrafiltration membrane filter core 2 so as to break up dirt in the ultrafiltration membrane filter core 2;
the flushing control module 502 is configured to control the water purification system to perform a flushing operation when the duration of the flushing pretreatment reaches a preset first duration, where the controlling the water purification system to perform the flushing operation includes: the raw water switch 1 and the waste water switch 5 of the water purifying system are controlled to be opened, the flushing component 6 is controlled to be closed to break the water purifying passage, so that water entering the water inlet of the ultrafiltration membrane filter core 2 from the raw water inlet discharges dirt in the broken ultrafiltration membrane filter core 2 from the concentrated water inlet of the ultrafiltration membrane filter core 2;
and a circulation control module 503, configured to stop executing the flushing operation when the duration of the flushing operation reaches a preset second duration.
For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
The embodiment of the invention provides a water purification system and a flushing control method and a flushing control device thereof, which comprise a water purification passage and a wastewater passage which are composed of a raw water switch 1, an ultrafiltration membrane filter core 2, an RO membrane filter core 4 and a wastewater switch 5, and a flushing assembly 6 connected in series on the water purification passage. When the water purification system executes flushing pretreatment operation, the raw water switch 1 and the waste water switch 5 are simultaneously closed and the flushing component 6 is started, so that water stored in the water purification system circulates in the water purification passage and the waste water passage, and high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter core 4 reversely flows into the concentrated water port of the ultrafiltration membrane filter core 2, so that dirt in the ultrafiltration membrane filter core 2 is broken up; when the water purification system executes flushing operation, the raw water switch 1 and the waste water switch 5 are simultaneously opened and closed the flushing assembly 6, so that water entering the water inlet of the ultrafiltration membrane filter core 2 from the raw water inlet discharges dirt in the broken ultrafiltration membrane filter core 2 from the concentrated water inlet of the ultrafiltration membrane filter core 2. The invention utilizes the high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter core 4 to reversely flow into the concentrated water port of the ultrafiltration membrane filter core 2 so as to break up dirt in the ultrafiltration membrane filter core 2, is favorable for bringing out the dirt in the broken ultrafiltration membrane filter core 2 when automatic flushing is carried out, has convenient cleaning operation, improves the flushing effect of the ultrafiltration membrane filter core 2, reduces flushing water consumption, and further improves the service life of a water purification system.
Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, any of the embodiments claimed herein may be used in any combination.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A water purification system is characterized by comprising a water purification passage and a wastewater passage which are composed of a raw water switch, an ultrafiltration membrane filter element, an RO membrane filter element and a wastewater switch, and a flushing assembly connected in series on the water purification passage, wherein the water purification passage and the wastewater passage are respectively connected with a water inlet of a water purifier, a water outlet of a water purifier and a water inlet of a water purifier, wherein the water purifier is connected with the water purifier, and the flushing assembly is connected with the water purifier in series on the water
The raw water switch is connected with the water inlet of the ultrafiltration membrane filter element, and the water producing port of the ultrafiltration membrane filter element is connected with the water inlet of the RO membrane filter element to form the water purifying passage;
the water concentration port of the RO membrane filter element and the water concentration port of the ultrafiltration membrane filter element are respectively connected with the wastewater switch to form the wastewater passage;
the flushing component is used for being started when the water purification system executes flushing pretreatment so that water stored in the water purification system circulates in the water purification passage and the wastewater passage, and high-pressure concentrated water flowing out of the concentrated water port of the RO membrane filter element reversely flows into the concentrated water port of the ultrafiltration membrane filter element so as to break up dirt in the ultrafiltration membrane filter element; when the water purification system performs flushing operation, the water purification system is closed to block the water purification passage, so that water entering the water inlet of the ultrafiltration membrane filter core from the raw water inlet discharges dirt in the broken ultrafiltration membrane filter core from the concentrated water inlet of the ultrafiltration membrane filter core, wherein when the water purification system performs flushing pretreatment, the raw water switch and the wastewater switch are simultaneously closed, and when the water purification system performs flushing operation, the raw water switch and the wastewater switch are simultaneously opened.
2. The water purification system of claim 1, wherein the flush assembly comprises a first switch and a regulated pump,
when the flushing assembly is started, the first switch and the pressure stabilizing pump are simultaneously started, and the circulation of water stored in the water purifying system is accelerated under the action of the pressure stabilizing pump, so that the water stored in the water purifying system circulates in the water purifying passage and the wastewater passage;
when the flushing assembly is closed, the first switch and the steady pump are simultaneously closed to block the water purifying passage.
3. The water purification system of claim 2, wherein the first switch and the regulated pump are connected between a water producing port of the ultrafiltration membrane cartridge to a water inlet of the RO membrane cartridge.
4. The water purification system of claim 1, wherein the wastewater path further comprises a first unidirectional flow device connected between the concentrate of the RO membrane cartridge and the concentrate of the ultrafiltration membrane cartridge, the first unidirectional flow device unidirectional flow the concentrate of the RO membrane cartridge to the concentrate of the ultrafiltration membrane cartridge.
5. The water purification system of claim 1, wherein the water purification branch further comprises a composite filter element, wherein a water producing port of the ultrafiltration membrane filter element is connected to a front water inlet of the composite filter element, a front water outlet of the composite filter element is connected to a water inlet of the RO membrane filter element, and a water producing port of the RO membrane filter element is connected to a rear water inlet of the composite filter element to form the water purification passage.
6. The water purification system of claim 5, wherein the water purification pathway further comprises a second unidirectional flow device connected between the water producing port of the RO membrane cartridge and the post-cartridge of the composite cartridge, the second unidirectional flow device unidirectional flow the water producing port of the RO membrane cartridge to the post-cartridge of the composite cartridge.
7. The water purification system of claim 5, wherein the water purification passage further comprises a water purification branch and a pure water branch, the water purification branch is connected to the water producing port of the ultrafiltration membrane filter element for running water purification, and the pure water branch is connected to the water producing port of the RO membrane filter element or the rear water outlet of the composite filter element for flowing out pure water.
8. The water purification system of claim 7, wherein the water purification pathway further comprises a first flow detection device coupled to the water purification branch and a second flow detection device coupled to the pre-water inlet of the composite filter cartridge.
9. A flush control method applied to the water purification system as claimed in any one of claims 1 to 8, the method comprising:
when a flushing control instruction is received, controlling the water purification system to execute a flushing pretreatment operation, wherein the controlling the water purification system to execute the flushing pretreatment operation comprises: controlling a raw water switch and a waste water switch of the water purification system to be closed, controlling the flushing assembly to be opened so that water stored in the water purification system circulates in the water purification passage and the waste water passage, and enabling high-pressure concentrated water flowing out of a concentrated water port of the RO membrane filter element to reversely flow into a concentrated water port of the ultrafiltration membrane filter element so as to break up dirt in the ultrafiltration membrane filter element;
when the duration of the flushing pretreatment reaches a preset first duration, controlling the water purification system to execute flushing operation, wherein the controlling the water purification system to execute the flushing operation comprises the following steps: controlling a raw water switch and a waste water switch of the water purifying system to be opened, and controlling the flushing assembly to be closed so as to block the water purifying passage, so that water entering a water inlet of the ultrafiltration membrane filter core from a raw water inlet discharges dirt in the broken ultrafiltration membrane filter core from a concentrated water inlet of the ultrafiltration membrane filter core;
and stopping executing the flushing operation when the duration of the flushing operation reaches a preset second duration.
10. The method of claim 9, wherein after stopping performing the flushing operation when the duration of the flushing operation reaches a preset second duration, the method further comprises:
and controlling the water purification system to repeatedly execute the flushing pretreatment operation and the flushing operation until the repeated execution times reach a first preset times.
11. A flush control device for use in a water purification system as claimed in any one of claims 1 to 8, said device comprising:
the flushing pretreatment control module is used for controlling the water purification system to execute flushing pretreatment operation when a flushing control instruction is received, and controlling the water purification system to execute the flushing pretreatment operation comprises the following steps: controlling a raw water switch and a waste water switch of the water purification system to be closed, controlling the flushing assembly to be opened so that water stored in the water purification system circulates in the water purification passage and the waste water passage, and enabling high-pressure concentrated water flowing out of a concentrated water port of the RO membrane filter element to reversely flow into a concentrated water port of the ultrafiltration membrane filter element so as to break up dirt in the ultrafiltration membrane filter element;
the flushing control module is used for controlling the water purification system to execute flushing operation when the duration of the flushing pretreatment reaches a preset first duration, and controlling the water purification system to execute flushing operation comprises the following steps: controlling a raw water switch and a waste water switch of the water purifying system to be opened, and controlling the flushing assembly to be closed so as to block the water purifying passage, so that water entering a water inlet of the ultrafiltration membrane filter core from a raw water inlet discharges dirt in the broken ultrafiltration membrane filter core from a concentrated water inlet of the ultrafiltration membrane filter core;
and the circulation control module is used for stopping executing the flushing operation when the duration of the flushing operation reaches a preset second duration.
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Cited By (1)
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