CN105621644B - Water purification system and its cleaning method - Google Patents

Water purification system and its cleaning method Download PDF

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Publication number
CN105621644B
CN105621644B CN201410583785.XA CN201410583785A CN105621644B CN 105621644 B CN105621644 B CN 105621644B CN 201410583785 A CN201410583785 A CN 201410583785A CN 105621644 B CN105621644 B CN 105621644B
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China
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reverse osmosis
water
unit
filter core
solenoid valve
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CN105621644A (en
Inventor
张量
陈文彬
杨勇
陈静
陈黄锰
秦利利
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Abstract

The invention discloses a kind of water purification system and its cleaning methods, wherein system includes the pretreatment unit (100), reverse osmosis treatment unit (200) and water cell (300) for passing sequentially through placed in series, further includes circulation waterway unit (400);Wherein, reverse osmosis treatment unit (200) includes reverse osmosis filter core (210);Circulation waterway unit (400) is connect with reverse osmosis treatment unit (200) by pipeline, and a circulation loop is formed;The first solenoid valve (010) is provided in connecting pipe between reverse osmosis treatment unit (200) and the water cell (300).Water purification system provided by the invention and its cleaning method, it is big to the flushing strength of reverse osmosis filter core, the pollutant in reverse osmosis filter core can be effectively removed.Meanwhile, it is capable to significantly slow the pollution of reverse osmosis filter core, extend the service life of reverse osmosis filter core.

Description

Water purification system and its cleaning method
Technical field
The present invention relates to tap water purifying fields, more particularly to a kind of water purification system and its cleaning method.
Background technique
Reverse osmosis membrane (i.e. reverse osmosis filter core) is the core component in water purifier system, in use due to feed liquid In solute or particle film surface deposit, be easy to happen fouling membrane.Fouling membrane will result directly in the separating property of reverse osmosis membrane Decline causes adverse effect to the service life of producing water water quality, reverse osmosis membrane, increases operating cost so that operating pressure becomes larger.
Traditional reverse osmosis water purifier carrys out the shadow of decelerating membrane pollution usually using the method that raw water (tap water) rinses film surface It rings, extends the service life of reverse osmosis membrane.Due on the one hand needing the dosage in view of flushing water, usual washing time is very short, rinses The flow velocity of water is smaller, so that limited in the shearing force of film surface generation when rinsing;Dissolution of the another aspect tap water to various salt crust Ability is poor, so can not be effectively rinsed to reverse osmosis membrane using the method that traditional raw water rushes film surface.
Summary of the invention
Based on this, it is necessary to it is in view of the drawbacks of the prior art and insufficient, provide one kind can high-efficiency rinsing reverse osmosis membrane, have A kind of water purification system and its cleaning method that effect avoids fouling membrane, extends the reverse osmosis membrane service life.
Water purification system provided for achieving the object of the present invention, the pretreatment unit, anti-including passing sequentially through placed in series It permeates processing unit and water cell, the reverse osmosis treatment unit includes reverse osmosis filter core;It further include circulation waterway list Member;
The circulation waterway unit is connect with the reverse osmosis treatment unit by pipeline, and a circulation loop is formed;
The first solenoid valve is provided in connecting pipe between the reverse osmosis treatment unit and the water cell;Work as institute State the first solenoid valve it is in the open state when, the pure water that stores in the water cell can by the circulation waterway unit, The reverse osmosis filter core is rinsed into the reverse osmosis treatment unit, later from the draining of the reverse osmosis treatment unit Mouth is discharged or is again introduced into the circulation waterway unit and recycled.
Water purification system of the invention further includes post-processing unit in one of the embodiments,;
The post-processing unit is connect with the reverse osmosis treatment unit and the water cell by pipeline;
It is set in connecting pipe between the post-processing unit and the reverse osmosis treatment unit and the water cell It is equipped with second solenoid valve;When the second solenoid valve is in close state, and first solenoid valve is in the open state, institute Stating the pure water stored in water cell can be by the circulation waterway unit, into the reverse osmosis treatment unit to described anti- Infiltration filter core is rinsed, and is discharged or is again introduced into later the circulation waterway list from the discharge outlet of the reverse osmosis treatment unit Member is recycled.
The reverse osmosis treatment unit further includes stabilized pressure pump and the first check valve in one of the embodiments,;
The stabilized pressure pump is arranged on the water inlet line of the reverse osmosis filter core;
First check valve setting the reverse osmosis filter core and the circulation waterway unit, the water cell, with And in the connecting pipe between the post-processing unit;
Water in the pretreatment unit or the circulation waterway unit enters the reverse osmosis diafiltration by the stabilized pressure pump Core, the production water after the reverse osmosis filter element filtering enter the circulation waterway unit, the storage by first check valve Water unit or the post-processing unit.
The reverse osmosis treatment unit further includes flowmeter in one of the embodiments,;
The flowmeter is arranged in the connecting pipe between the reverse osmosis filter core and the stabilized pressure pump.
The reverse osmosis treatment unit further includes drainage pipeline in one of the embodiments,;
The drainage pipeline is connect with the reverse osmosis filter core, and third solenoid valve is provided on the drainage pipeline.
The circulation waterway unit includes the 4th solenoid valve and second being arranged on pipeline in one of the embodiments, Check valve;
When the 4th solenoid valve is opened, the production water energy of the reverse osmosis treatment unit is enough single followed by described first To valve, the second one-way valve enters the pure water stored in the stabilized pressure pump or the water cell can flow through described second Check valve enters the stabilized pressure pump.
In one of the embodiments, in the connecting pipe between the pretreatment unit and the reverse osmosis treatment unit It is provided with the 5th solenoid valve;
When the second solenoid valve and the 5th solenoid valve are in close state, and it is first solenoid valve, described When third solenoid valve and the 4th solenoid valve are in open state, the pure water stored in the water cell can lead to The circulation waterway unit is crossed, the reverse osmosis filter core is rinsed into the reverse osmosis treatment unit, later from described The discharge outlet of reverse osmosis treatment unit is discharged;
When the second solenoid valve, the third solenoid valve and the 5th solenoid valve are in close state, described When one solenoid valve and the 4th solenoid valve are in open state, the pure water stored in the water cell can be by described Circulation waterway unit is rinsed the reverse osmosis filter core into the reverse osmosis treatment unit, is again introduced into later described Circulation waterway unit is recycled.
The pretreatment unit includes PP cotton filter element and active carbon filter core in one of the embodiments,;
The PP cotton filter element and the active carbon filter core pass through placed in series.
The water cell includes pressure pot and the first high-voltage switch gear in one of the embodiments,;
The pressure pot is connect with the reverse osmosis treatment unit and the post-processing unit respectively by pipeline, for storing up Deposit pure water;
First high-voltage switch gear is arranged in the pressure pot and the reverse osmosis treatment unit and the post-processing unit Between connecting pipe on.
The post-processing unit includes composite filter element and the second high-voltage switch gear in one of the embodiments,;
The composite filter element is connect with the reverse osmosis treatment unit and the water cell respectively by pipeline;
Second high-voltage switch gear is arranged on the outlet conduit of the composite filter element.
Correspondingly, the present invention also provides a kind of cleaning methods of water purification system, comprising the following steps:
S100 controls one stored in water cell when water purification system stops water conservancy project work processed or needs to be rinsed Divide pure water to enter reverse osmosis treatment unit by circulation waterway unit, the reverse osmosis treatment unit will be entered by stabilized pressure pump Pure water is pressed into reverse osmosis filter core, and the mixing water of remaining raw water and concentrated water in the reverse osmosis filter core is discharged;
S200 after draining is completed, controls a part of pure water stored in the water cell and passes through circulation waterway unit Into the reverse osmosis treatment unit, make the portion of pure water in the circulation waterway unit and the reverse osmosis by the stabilized pressure pump It is recycled in the circulation loop of saturating processing unit composition, circulation flushing is carried out to the reverse osmosis filter core;Circulation flushing preset time After stop, flushing water is discharged, the water cell is finally controlled and supplements pure water to the circulation waterway unit again, make described Remaining water is pure water in circulation loop and the reverse osmosis filter core, and flushing finishes.
Beneficial effects of the present invention: water purification system provided by the invention and its cleaning method, by reverse osmosis treatment list A circulation waterway unit in parallel at the pipeline of member, forms a circulation loop with the reverse osmosis treatment unit, and at reverse osmosis place The first solenoid valve is set in connecting pipe between reason unit and water cell, so that the pure water energy stored in water cell Enough pass through circulation waterway unit, into reverse osmosis treatment unit, from the row of reverse osmosis treatment unit after reverse osmosis filter element filtering The mouth of a river is discharged or is again introduced into circulation waterway unit and recycled, and is rinsed to reverse osmosis filter core.Water purification provided by the invention System and its cleaning method, it is big to the flushing strength of reverse osmosis filter core, the pollutant in reverse osmosis filter core can be effectively removed.Together When, the pollution of reverse osmosis filter core can be significantly slowed, the service life of reverse osmosis filter core is extended.
Detailed description of the invention
In order to which the objects, technical solutions and advantages of water purification system and its cleaning method of the invention are more clearly understood, Below in conjunction with specific drawings and the specific embodiments, water purification system of the invention and its cleaning method are carried out further specifically It is bright.
Fig. 1 is the structural schematic diagram of one embodiment of water purification system of the invention;
Fig. 2 is the structural schematic diagram of another embodiment of water purification system of the invention.
Specific embodiment
Below in conjunction with embodiment, the present invention will be described in detail.It should be noted that in the absence of conflict, the application In embodiment and embodiment in feature can be combined with each other.
As shown in Figure 1, the water purification system that one embodiment of the invention provides, including pretreatment unit 100, reverse osmosis treatment list Member 200, water cell 300 and circulation waterway unit 400.Reverse osmosis treatment unit 200 includes reverse osmosis filter core 210, is used for The water for flowing through reverse osmosis treatment unit 200 is filtered.
Wherein, pretreatment unit 100, reverse osmosis treatment unit 200, water cell 300 pass sequentially through placed in series.Water processed When, raw water (tap water) flows through the reverse osmosis filter core 210 in reverse osmosis treatment unit 200 after the processing of pretreatment unit 100 It is filtered, the production water (being equivalent to pure water) of reverse osmosis treatment unit 200 enters in water cell 300 to be stored as pure water, is supplied User uses.Reverse osmosis treatment unit 200 has discharge outlet, through the filtered concentrated water of reverse osmosis filter core 210 from reverse osmosis treatment The discharge outlet of unit 200 is discharged.
Circulation waterway unit 400 is in parallel by pipeline with reverse osmosis treatment unit 200, forms a circulation loop.Reverse osmosis The first solenoid valve 010 is provided with (such as Fig. 1 and Fig. 2 institute in connecting pipe between saturating processing unit 200 and water cell 300 Show), when the first solenoid valve 010 is in the open state, the pure water stored in water cell 300 can pass through circulation waterway unit 400, into reverse osmosis treatment unit 200, arranged after being rinsed to reverse osmosis filter core 210 from the discharge outlet of reverse osmosis treatment unit 200 Out or it is again introduced into circulation waterway unit 400 and is recycled.
Since reverse osmosis treatment unit 200 and water cell 300 are by placed in series, thus circulation waterway unit 400 with It is also to be connected to by above-mentioned pipeline between water cell 300, so the first solenoid valve 010 also is located at circulation waterway unit simultaneously In connecting pipe between 400 and water cell 300.
Above-mentioned one cycle flushing process may include two movements, flushing movement one and flushing movement two.
Flushing movement one: being first shut off pretreatment unit 100, and raw water is prevented to enter;The first solenoid valve 010 is opened, makes to store up A part of pure water stored in water unit 300 passes through circulation waterway unit 400, into reverse osmosis treatment unit 200, is full of reverse osmosis Diafiltration core 210, make in reverse osmosis filter core 210 after water processed remaining raw water and concentrated water and circulation waterway unit 400 with it is reverse osmosis Remaining water is discharged from the discharge outlet of reverse osmosis treatment unit 200 in circulation waterway between processing unit 200, closes the first electricity Magnet valve 010;
Flushing movement two: after flushing movement one, closing the discharge outlet of reverse osmosis treatment unit 200, opens the first electricity Magnet valve 010 is turned off after a certain period of time, and a part of pure water stored in water cell 300 is made to again pass by circulation waterway unit 400 enter reverse osmosis treatment units 200, to reverse osmosis filter core 210 carry out circulation flushing, rinse after a certain period of time by flushing water from The discharge outlet of reverse osmosis treatment unit 200 is discharged.It is then shut off the discharge outlet of reverse osmosis treatment unit 200, is again turned on first Solenoid valve 010 is turned off after a certain period of time, and pure water is supplemented in circulation waterway unit 400 and reverse osmosis treatment unit again In 200 circuits formed, complete to rinse.
Above-mentioned flushing movement one and movement two can recycle progress, circulation waterway unit 400 after entire flushing process With in reverse osmosis treatment unit 200 and its connecting pipe it is remaining be pure water.
Traditional water purification system rinses film surface (reverse osmosis filter core 210 i.e. of the invention) usually using tap water to slow down film Pollution, since flushing strength is small and tap water is poor to the solvability of various salt crust, so causing cleaning efficiency low, effect is not It is good.The present invention is recycled back to its formation one in parallel with reverse osmosis treatment unit 200 by setting circulation waterway unit 400 Road, and the first solenoid valve 010 is set in the connecting pipe between reverse osmosis treatment unit 200 and water cell 300, by water storage The pure water stored in unit 300 is introduced into the circulation loop, is realized using the pure water stored in water cell 300 to reverse osmosis diafiltration Core 210 carries out circulation flushing.
Water purification system provided in this embodiment, in circulation flushing, pure water Rapid Circulation in the water route of closure flows, shape The polluter of reverse osmosis filter core 210 is washed away at big shearing force.Since the water ph value that goes out of reverse osmosis filter core 210 is generally less than 7 is weakly acidic, so, pure water has stronger solvability to the salt crust on reverse osmosis filter core 210.Further, circulating flushing After washing journey, remaining water is pure water in reverse osmosis filter core 210, and reverse osmosis filter core 210, which is immersed in pure water, both to be reduced The precipitation precipitating tendency of salinity, impregnates the pollutant on reverse osmosis 210 its surface of filter core of energy again for a long time in concentrated water.The present embodiment mentions The water purification system of confession, it is good to the flush efficiency height of reverse osmosis filter core 210, effect, and can effectively avoid reverse osmosis filter core 210 Pollution, extends the service life of reverse osmosis filter core 210.
Referring to Fig. 1, another embodiment of the present invention provides water purification system further include post-processing unit 500, post-processing unit 500 are connect with reverse osmosis treatment unit 200 and water cell 300 by pipeline.Post-processing unit 500 is used for reverse osmosis place It manages the pure water stored in the production water and water cell 300 of unit 200 and does further filtration treatment, then supply user and use.
The production water of reverse osmosis treatment unit 200 can enter in water cell 300 to be stored as pure water, after can also entering Processing unit 500 does further filtration treatment later for users to use.Meanwhile the pure water stored in water cell 300 can also be with User is supplied by post-processing unit 500 to use.
It is provided in connecting pipe between post-processing unit 500 and reverse osmosis treatment unit 200 and water cell 300 Second solenoid valve 020 (referring to Fig. 1 and Fig. 2);When second solenoid valve 020 is in close state, and the first solenoid valve 010 is in and opens When opening state, the pure water stored in water cell 300 can be by circulation waterway unit 400, into reverse osmosis treatment unit 200 Reverse osmosis filter core 210 is rinsed, is discharged or is again introduced into later circulation waterway from the discharge outlet of reverse osmosis treatment unit 200 Unit 400 is recycled.
Another embodiment of the present invention provides water purification system, as shown in Fig. 2, reverse osmosis treatment unit 200 include it is reverse osmosis Filter core 210, stabilized pressure pump 220 and the first check valve 230, stabilized pressure pump 220 are arranged on the water inlet line of reverse osmosis filter core 210.
The setting of first check valve 230 is in reverse osmosis filter core 210 and circulation waterway unit 400, water cell 300, Yi Jihou In connecting pipe between processing unit 500.
When normal water processed, pretreatment unit 100, in water enter reverse osmosis filter core 210 by stabilized pressure pump 220, by anti- Permeate the filtered production water of filter core 210 by the first check valve 230 enter circulation waterway unit 400 or water cell 300, Or post-processing unit 500.
When flushing, a part of pure water stored in water cell 300 enters reverse osmosis treatment by circulation waterway unit 400 Unit 200;Stabilized pressure pump 220 is opened, the pure water fast ram compression of reverse osmosis treatment unit 200 will be entered under the action of stabilized pressure pump 220 Enter in reverse osmosis filter core 210, it is rinsed.Pure water quickly flows in the water route of closure, itself has extremely strong flushing Ability.Stabilized pressure pump 220 is arranged on the water inlet line of reverse osmosis filter core 210, further increases the speed and strength of flushing.
Reverse osmosis treatment unit 200 further includes flowmeter 240, and flowmeter 240 is arranged in reverse osmosis filter core 210 and stabilized pressure pump In connecting pipe between 220.Flowmeter 240 for recording water flow total amount, thus to the service life of each water purification unit into Row monitoring.
Reverse osmosis treatment unit 200 further includes drainage pipeline, and drainage pipeline is connect with reverse osmosis filter core 210, drainage pipeline On be provided with third solenoid valve 030, control the on-off of drainage pipeline.
As depicted in figs. 1 and 2, the circulation waterway unit 400 in above-described embodiment includes the 4th electricity being arranged on pipeline Magnet valve 040 and second one-way valve 410.Referring to fig. 2, when second solenoid valve 410 is opened, the production water of reverse osmosis treatment unit 200 Enter stabilized pressure pump 220 followed by the first check valve 230, second one-way valve 410;When second solenoid valve 410 is opened, water storage list The pure water stored in member 300 can also flow through second one-way valve 410 and enter stabilized pressure pump 220.
Further, referring to Fig. 1, it is arranged in the connecting pipe between pretreatment unit 100 and reverse osmosis treatment unit 200 There is the 5th solenoid valve 050.
When second solenoid valve 020 and the 5th solenoid valve 050 are in close state, and the first solenoid valve 010, third electromagnetism When valve 030 and the 4th solenoid valve 040 are in open state, the pure water stored in water cell 300 can pass through recirculated water Road unit 400 is rinsed reverse osmosis filter core 210 into reverse osmosis treatment unit 200, later from reverse osmosis treatment unit 200 discharge outlet discharge.
When second solenoid valve 020, third solenoid valve 030 and the 5th solenoid valve 050 are in close state, the first electromagnetism When valve 010 and the 4th solenoid valve 040 are in open state, the pure water stored in water cell 300 can pass through circulation waterway Unit 400 is rinsed reverse osmosis filter core 210 into reverse osmosis treatment unit 200, is again introduced into circulation waterway unit later 400 are recycled.
Further, referring to fig. 2, pretreatment unit 100 includes PP cotton filter element 110, active carbon filter core 120, PP cotton filter element 110 and active carbon filter core 120 pass through placed in series.Tap water passes through 120 primary filtration of PP cotton filter element 110 and active carbon filter core Afterwards, reverse osmosis treatment unit 200 just can enter by the 5th solenoid valve 050 and carries out further filtration treatment.5th solenoid valve 050 is generally in normally off, and when water processed just opens.
Water cell 300 in above-described embodiment includes pressure pot 310 and the first high-voltage switch gear 320.Pressure pot 310 passes through Pipeline is connect with reverse osmosis treatment unit 200 and post-processing unit 500 respectively, for storing pure water.First high-voltage switch gear 320 is set It sets in the connecting pipe between pressure pot 310 and reverse osmosis treatment unit 200 and post-processing unit 500.
Post-processing unit 500 in above-described embodiment includes composite filter element 510 and the second high-voltage switch gear 520.Composite filter element 510 are connect with reverse osmosis treatment unit 200 and water cell 300 respectively by pipeline.Composite filter element 510 mainly comprising carbon rod and Ultrafiltration film filtering material is pure after storing a period of time in the production water and pressure pot 310 of reverse osmosis filter core 210 for further processing Water is finally reached the effects of removing bacterium, peculiar smell.
Second high-voltage switch gear 520 is mainly used for detecting the water pressures on the water route when water processed, and controls the 5th solenoid valve 050.When water processed, when branch hydraulic pressure decline, the 5th solenoid valve 050 is opened, and stabilized pressure pump 220 operates, system water.When the branch The 5th solenoid valve 050 is closed when road hydraulic pressure increases, and stabilized pressure pump 220 shuts down, and system stops water processed.
Referring to fig. 2, working condition of the water purification system provided by the above embodiment in circulation flushing is as follows:
Flushing movement one: when water processed is completed or needs to carry out circulation flushing, second solenoid valve 020, the 5th solenoid valve 050 closes, and the first solenoid valve 010, third solenoid valve 030, the 4th solenoid valve 040 are opened, and the first high-voltage switch gear 320 is opened.This When pressure pot 310 in suitable pure water flow out through the first solenoid valve 010, the first high-voltage switch gear 320 enter circulation waterway part; First check valve 230 prevents pure water into the production water side of reverse osmosis filter core 210, and pure water continues through the 4th after entering circulation waterway Solenoid valve 040 and second one-way valve 410, stabilized pressure pump 220 brings into operation at this time, pure water is quickly pressed into reverse osmosis filter core 210, Full of reverse osmosis filter core 210, remaining raw water after water processed in reverse osmosis filter core 210 and concentrated water are passed through into 030 row of third solenoid valve Out.The pure least amount of water being discharged in pressure pot 310 during this is greater than the volume and stabilized pressure pump of entire circulation waterway pipeline 220, the sum of the volume of reverse osmosis filter core 210, but consider that its water-saving value can not be too big.
Flushing movement two: after circulation flushing movement one, closing third solenoid valve 030, open the first solenoid valve 010, Pure water in pressure pot 310 is supplemented in again after circulation waterway and closes the first solenoid valve 010,220 continuous running of stabilized pressure pump makes Pure water flow at high speed in circulation waterway, pure water generates big shearing force to reverse osmosis filter core 210 during flow at high speed will Pollutant in reverse osmosis filter core 210 washes out.Pure water in pressure pot 310 adjusts PH without composite filter element 510, is in weak acid Property, there is good dissolubility to the sediment of reverse osmosis filter core 210.After reaching the circulation flushing time of setting, third electromagnetism Valve 030 is opened, flushing water discharge;The first solenoid valve 010 is opened later, and the pure water in pressure pot 310 is made to supplement pure water into circulation Water route.After the completion of circulation flushing, pollutant is precipitated full of faintly acid pure water continued dissolution film surface in reverse osmosis filter core 210, thus Prevent precipitating of the residual concentrated water on reverse osmosis filter core 210 may.
Correspondingly, based on the same inventive concept, the embodiment of the present invention also provides a kind of cleaning method of water purification system, the party The water purification system that the implementation of method can provide through the foregoing embodiment realizes that repeating part is no longer redundant later, specifically includes the following steps:
S100 controls one stored in water cell when water purification system stops water conservancy project work processed or needs to be rinsed Divide pure water to enter reverse osmosis treatment unit by circulation waterway unit, the reverse osmosis treatment unit will be entered by stabilized pressure pump Pure water is pressed into reverse osmosis filter core, and the mixing water of remaining raw water and concentrated water in the reverse osmosis filter core is discharged;
S200 after draining is completed, controls a part of pure water stored in the water cell and passes through circulation waterway unit Into the reverse osmosis treatment unit, make the portion of pure water in the circulation waterway unit and the reverse osmosis by the stabilized pressure pump It is recycled in the circulation loop of saturating processing unit composition, circulation flushing is carried out to the reverse osmosis filter core;Circulation flushing preset time After stop, flushing water is discharged, the water cell is finally controlled and supplements pure water to the circulation waterway unit again, make described Remaining water is pure water in circulation loop and the reverse osmosis filter core, and flushing finishes.
Above-mentioned circulation flushing process can be two step of step S100 and step S200, be also possible to their multiple circulation, And the circulation flushing time in step S200 can be set as needed.
Water purification system provided by the invention and its cleaning method, it is big to the flushing strength of reverse osmosis filter core, it can effectively go Except the pollutant in reverse osmosis filter core.Meanwhile, it is capable to significantly slow the pollution of reverse osmosis filter core, extend the use of reverse osmosis filter core Service life.
Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that for those of ordinary skill in the art, Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection model of the invention It encloses.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (11)

1. a kind of water purification system, including pass sequentially through the pretreatment unit (100) of placed in series, reverse osmosis treatment unit (200), And water cell (300), the reverse osmosis treatment unit (200) include reverse osmosis filter core (210) and stabilized pressure pump (220);Its It is characterized in that, further includes circulation waterway unit (400);
The circulation waterway unit (400) is connect with the reverse osmosis treatment unit (200) by pipeline, is formed one and is recycled back to Road;
The first electromagnetism is provided in connecting pipe between the reverse osmosis treatment unit (200) and the water cell (300) Valve (010);When first solenoid valve (010) is in the open state, the pure water stored in the water cell (300) can By the circulation waterway unit (400), into the reverse osmosis treatment unit (200) to the reverse osmosis filter core (210) into Row rinses, and is again introduced into the circulation waterway unit (400) later and is recycled.
2. water purification system according to claim 1, which is characterized in that further include post-processing unit (500);
The post-processing unit (500) and the reverse osmosis treatment unit (200) and the water cell (300) pass through pipeline Connection;
Company between the post-processing unit (500) and the reverse osmosis treatment unit (200) and the water cell (300) Second solenoid valve (020) is provided on adapter tube road;When the second solenoid valve (020) is in close state, and first electricity When magnet valve (010) is in the open state, the pure water stored in the water cell (300) can pass through the circulation waterway unit (400), the reverse osmosis filter core (210) is rinsed into the reverse osmosis treatment unit (200), is again introduced into institute later Circulation waterway unit (400) is stated to be recycled.
3. water purification system according to claim 2, which is characterized in that the reverse osmosis treatment unit (200) further includes One check valve (230);
The stabilized pressure pump (220) is arranged on the water inlet line of the reverse osmosis filter core (210);
First check valve (230) setting is in the reverse osmosis filter core (210) and the circulation waterway unit (400), described In connecting pipe between water cell (300) and the post-processing unit (500);
Water in the pretreatment unit (100) or the circulation waterway unit (400) enters institute by the stabilized pressure pump (220) State reverse osmosis filter core (210), through the reverse osmosis filtered production water of filter core (210) by first check valve (230) into Enter the circulation waterway unit (400), the water cell (300) or the post-processing unit (500).
4. water purification system according to claim 3, which is characterized in that the reverse osmosis treatment unit (200) further includes stream Meter (240);
The connecting pipe that the flowmeter (240) is arranged between the reverse osmosis filter core (210) and the stabilized pressure pump (220) On.
5. water purification system according to claim 3, which is characterized in that the reverse osmosis treatment unit (200) further includes row Waterpipe;
The drainage pipeline is connect with the reverse osmosis filter core (210), and third solenoid valve is provided on the drainage pipeline (030)。
6. water purification system according to claim 5, which is characterized in that the circulation waterway unit (400) includes that setting exists The 4th solenoid valve (040) and second one-way valve (410) on pipeline;
When the 4th solenoid valve (040) is opened, the production water energy of the reverse osmosis treatment unit (200) is enough followed by described First check valve (230), the second one-way valve (410) enter in the stabilized pressure pump (220) or the water cell (300) The pure water of storage can flow through the second one-way valve (410) and enter the stabilized pressure pump (220).
7. water purification system according to claim 6, which is characterized in that the pretreatment unit (100) with it is described reverse osmosis The 5th solenoid valve (050) is provided in connecting pipe between processing unit (200);
When the second solenoid valve (020) and the 5th solenoid valve (050) are in close state, and first solenoid valve (010), when the third solenoid valve (030) and the 4th solenoid valve (040) are in open state, the water storage list The pure water stored in first (300) can be by the circulation waterway unit (400), into the reverse osmosis treatment unit (200) The reverse osmosis filter core (210) is rinsed, is discharged later from the discharge outlet of the reverse osmosis treatment unit (200);
It is closed when the second solenoid valve (020), the third solenoid valve (030) and the 5th solenoid valve (050) are in State, when first solenoid valve (010) and the 4th solenoid valve (040) are in open state, the water cell (300) pure water stored in can be right into the reverse osmosis treatment unit (200) by the circulation waterway unit (400) The reverse osmosis filter core (210) is rinsed, and is again introduced into the circulation waterway unit (400) later and is recycled.
8. water purification system according to any one of claims 1 to 7, which is characterized in that the pretreatment unit (100) includes PP cotton filter element (110) and active carbon filter core (120);
The PP cotton filter element (110) and the active carbon filter core (120) pass through placed in series.
9. water purification system according to any one of claims 1 to 7, which is characterized in that the water cell (300) includes pressure Power bucket (310) and the first high-voltage switch gear (320);
The pressure pot (310) by pipeline respectively with the reverse osmosis treatment unit (200) and the post-processing unit (500) Connection, for storing pure water;
First high-voltage switch gear (320) setting is in the pressure pot (310) and the reverse osmosis treatment unit (200) and described In connecting pipe between post-processing unit (500).
10. according to the described in any item water purification systems of claim 2 to 7, which is characterized in that post-processing unit (500) packet Include composite filter element (510) and the second high-voltage switch gear (520);
The composite filter element (510) by pipeline respectively with the reverse osmosis treatment unit (200) and the water cell (300) Connection;
Second high-voltage switch gear (520) is arranged on the outlet conduit of the composite filter element (510).
11. a kind of cleaning method of water purification system, which comprises the following steps:
S100 is stored a part of pure when water purification system stops water conservancy project work processed or needs to be rinsed in control water cell Water enters reverse osmosis treatment unit by circulation waterway unit, and the pure water of the reverse osmosis treatment unit will be entered by stabilized pressure pump It is pressed into reverse osmosis filter core, the mixing water of remaining raw water and concentrated water in the reverse osmosis filter core is discharged;
S200 controls a part of pure water stored in the water cell and is entered by circulation waterway unit after draining is completed The reverse osmosis treatment unit makes the portion of pure water in the circulation waterway unit and the reverse osmosis place by the stabilized pressure pump It is recycled in the circulation loop of reason unit composition, circulation flushing is carried out to the reverse osmosis filter core;Stop after circulation flushing preset time Only, flushing water is discharged, finally controls the water cell and supplement pure water to the circulation waterway unit again, makes the circulation Remaining water is pure water in circuit and the reverse osmosis filter core, and flushing finishes.
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CN105858812B (en) * 2016-06-08 2019-04-12 北京四季沐歌太阳能技术集团有限公司 A kind of reverse osmosis water manufacturing system of energy-saving and water-saving
CN106693709A (en) * 2017-02-10 2017-05-24 珠海格力电器股份有限公司 Water purification system and control method thereof and water purifier
CN107244714B (en) * 2017-08-15 2021-09-24 淮北醴恒净水科技有限公司 Water purifier device
CN107244713B (en) * 2017-08-15 2021-09-24 淮北醴恒净水科技有限公司 Household water purifier
CN108097053A (en) * 2017-12-29 2018-06-01 科勒(中国)投资有限公司 Flushing mechanism, water purifier and purging method
CN108773920B (en) * 2018-05-25 2023-07-28 珠海格力电器股份有限公司 Water purification system, water purification method and device
CN109485187B (en) * 2018-12-19 2020-03-27 珠海格力电器股份有限公司 Water treatment system, control method thereof and water purification equipment
CN109824158A (en) * 2019-03-08 2019-05-31 宁波福特恩净水设备有限公司 A kind of self-cleaning reverse osmosis membrane and water dispenser
CN110694336B (en) * 2019-11-12 2023-09-05 珠海格力电器股份有限公司 Filter element cleaning assembly, water purifier and filter element cleaning method
CN111470589A (en) * 2020-05-28 2020-07-31 佛山市顺德区美的饮水机制造有限公司 Water purifying device and cleaning method thereof
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