CN106830187A - With the water purifier for preventing reverse osmosis membrane secondary pollution function - Google Patents
With the water purifier for preventing reverse osmosis membrane secondary pollution function Download PDFInfo
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- CN106830187A CN106830187A CN201611237466.9A CN201611237466A CN106830187A CN 106830187 A CN106830187 A CN 106830187A CN 201611237466 A CN201611237466 A CN 201611237466A CN 106830187 A CN106830187 A CN 106830187A
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- water
- reverse osmosis
- osmosis membrane
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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
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- 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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to water purification field, disclose a kind of with the water purifier for preventing reverse osmosis membrane secondary pollution function, including the raw water water inlet pipe (101) being sequentially connected, pure water pipe (102) and water purification outlet pipe (103), also include standpipe (104) and backwash tube (105), pure water pipe (102), water purification outlet pipe (103), standpipe (104) and backwash tube (105) are connected by a four-way valve (12), backwash tube (105) is connected by a triple valve (16) with raw water water inlet pipe (101) and pure water pipe (102), and the second magnetic valve (11) and the first check valve (6) are provided with backwash tube (105), the water side of standpipe (104) is provided with storage tank (15) or pressure pot (13).The backwash tube that the present invention passes through the water outlet connection in reverse osmosis membrane filter element, the water purification in realization water storage device rinses reverse osmosis membrane, concentrate is substituted by water purification, effectively prevents penetrating fluid to be contaminated, it is to avoid reverse osmosis membrane secondary pollution.
Description
Technical field
It is the present invention relates to water purification field more particularly to a kind of with the water purification for preventing reverse osmosis membrane secondary pollution function
Device.
Background technology
Water resource pollution has been a wheezy people's livelihood topic, purifier as important solution
Increasingly accepted, and the good equipment of purifying water effect nearly all uses counter-infiltration filter core in the market, but go into seriously and have been found that, it is existing
Have water purification product has a common pain spot substantially：Equipment is equal without latter former seconds water TDS values out, bacterium colonies for a long time
It is not up to standard, if a people filled a cup of water every 1 hour daily, then and the water water quality that he drinks every time is in fact all problematic, conventional feelings
It is that the preceding water for flowing out for 8 seconds is directly outwelled under condition, that is to say, that have to first wait 8 seconds, this kind of way every time using water purification
Substantially not enough hommization.
Reverse osmosis membrane filter element principle is looked first at,, also known as reverse osmosis, one kind is separated with pressure differential as motive force from solution for it
Go out the UF membrane operation of solvent.Feed liquid to film side applies pressure, and when pressure exceedes its osmotic pressure, solvent can be against certainly
So inverse osmosis is made in the direction of infiltration.So as to the solvent passed through in the low-pressure side of film, i.e. penetrating fluid；High-pressure side is concentrated
Solution, i.e. concentrate.Reverse osmosis membrane can retain the material more than 0.0001 micron, be a kind of most fine UF membrane product,
TDS higher problem is primarily due to reverse osmosis membrane in not used time for a long time, although without compression pump pressurization, but water inlet end concentration
Liquid still can be slowly penetrated into penetrating fluid, and in the course of time, penetrating fluid TDS is raised, i.e., reverse osmosis membrane is secondary polluted.
The content of the invention
The problem that the present invention is secondary polluted for the reverse osmosis membrane that purifier of the prior art is present, there is provided one
Plant the water purifier for having and preventing reverse osmosis membrane secondary pollution function.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals：
With the water purifier for preventing reverse osmosis membrane secondary pollution function, including raw water water inlet pipe, the water outlet of raw water water inlet pipe
End is connected with pure water pipe and water purification outlet pipe in turn, and raw water water inlet pipe is provided with the first magnetic valve, the first solenoid valve control water purification
Water route is cut-off, and it is open circuit that it is only in water process processed, and off-state is in the case of other；Pure water pipe is provided with reverse osmosis membrane
Filter core, also including standpipe and backwash tube, the water side of pure water pipe, the water inlet end of water purification outlet pipe, the water inlet end of standpipe
And connected by a four-way valve between the water inlet end of backwash tube, the water side of backwash tube is entered by a triple valve and raw water
The water side of water pipe connects with the water inlet end of pure water pipe, and it is self counter flushing that the second magnetic valve and direction are provided with backwash tube
Water inlet tube end to water side the first check valve, the first check valve be mainly prevent water purification water route open when, at the beginning of preposition filter core
The water for walking purification directly enters water purification outlet pipe by backwash tube by the second magnetic valve, causes treated water contamination.Standpipe
Water side is provided with storage tank or pressure pot.
Preferably, being provided with preposition filter core on raw water water inlet pipe, preposition filter core includes the polypropylene melt-blown being sequentially connected
Filter core, granular activated carbon filter core and Carbon rod filter element.Wherein described granular activated carbon filter core can be replaced by Carbon rod filter element, carbon rod
Filter core can be replaced by ultrafiltration membrane filter element, and preposition filter core can also be one, two, four filter core compositions when actually used.
Preferably, be additionally provided with pure water pipe the booster pump being connected with reverse osmosis membrane filter element water inlet and with counter-infiltration membrane filtration
Second check valve of core delivery port connection.The Main Function of booster pump is to be used cooperatively with reverse osmosis membrane filter element, persistently provides pressure
Power, when water processed is needed, then opens booster pump；Second check valve is only opened when rinsing, and remaining time is required to close.
Preferably, being connected with the wastewater effluent being connected with reverse osmosis membrane filter element wastewater effluent mouth on reverse osmosis membrane filter element
Pipe, waste water outlet pipe is provided with waste water magnetic valve.
Preferably, also including the control being all connected with the first magnetic valve, the second magnetic valve, waste water magnetic valve and booster pump
Device processed, controller is provided with time control module, the magnetic valve of time control first that controller sets according to time control module,
The keying of the second magnetic valve, waste water magnetic valve and booster pump.
Preferably, water purification outlet pipe is provided with rearmounted filter core.
Preferably, the water side of standpipe is provided with storage tank, the water level being connected with controller is provided with storage tank and is passed
Sensor, level sensor detects the water level information in storage tank and the water level information that will be detected is sent to controller, controller
The keying of the first magnetic valve and booster pump is controlled according to the water level information for receiving.Level sensing device, only when water level is not reached
Preset value, just may require that water purification water route starts and adds water.
Preferably, the water side of standpipe is provided with pressure pot, the water inlet of pressure pot is connected with and connects with controller
The high-voltage switch gear for connecing, high-voltage switch gear detects the pressure information in pressure pot and the pressure information that will be detected is sent to controller,
Controller controls the keying of the first magnetic valve and booster pump according to the pressure information for receiving.Pressure is detected by high-voltage switch gear
Whether pressure in bucket, so as to judge the water position status in pressure pot, then controls whole purifier water processed, works as pressure pot
After interior pressure reaches high-voltage switch gear setting value, equipment stops water processed, and after pressure is reduced to high-voltage switch gear setting value, equipment starts
Water processed, so circulation.
The present invention as a result of above technical scheme, with significant technique effect：
The present invention connects a recoil for connection reverse osmosis membrane filter element import by the water outlet of reverse osmosis membrane filter element
Pipe is washed, the water purification in realization water storage device rinses reverse osmosis membrane, concentrate is substituted by water purification, effectively prevents penetrating fluid dirty
Dye, it is to avoid reverse osmosis membrane secondary pollution.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the embodiment of the present invention 2.
The toponym that each number designation is referred in accompanying drawing is as follows：101-raw water water inlet pipe, 102-pure water pipe,
103-water purification outlet pipe, 104-standpipe, 105-backwash tube, 106-waste water outlet pipe, 4-preposition filter core, 5-the first
Magnetic valve, the 6-the first check valve, 7-booster pump, 8-reverse osmosis membrane filter element, 9-waste water magnetic valve, the 10-the second check valve,
11-the second magnetic valve, 12-four-way valve, 13-pressure pot, 14-rearmounted filter core, 15-storage tank, 16-triple valve, 17-
High-voltage switch gear, 401-polypropylene melt blown filter, 402-granular activated carbon filter core, 403-Carbon rod filter element.
Specific embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
With the water purifier for preventing reverse osmosis membrane secondary pollution function, as shown in figure 1, including raw water water inlet pipe 101, raw water
Water inlet pipe 101 is provided with the first magnetic valve 5 and preposition filter core 4, and preposition filter core 4 includes the polypropylene melt blown filter being sequentially connected
401st, granular activated carbon filter core 402 and Carbon rod filter element 403.The water side of raw water water inlet pipe 101 is connected with the He of pure water pipe 102 in turn
Water purification outlet pipe 103, water purification outlet pipe 103 is provided with rearmounted filter core 14, and pure water pipe 102 is provided with reverse osmosis membrane filter element 8, also sets
There are the booster pump 7 being connected with the water inlet of reverse osmosis membrane filter element 8 and the second check valve being connected with the delivery port of reverse osmosis membrane filter element 8
10.The waste water outlet pipe 106 being connected with the wastewater effluent of reverse osmosis membrane filter element 8 mouth, wastewater effluent are connected with reverse osmosis membrane filter element 8
Pipe 106 is provided with waste water magnetic valve 9.
Also include standpipe 104 and backwash tube 105, the water side of pure water pipe 102, the water inlet end of water purification outlet pipe 103,
Connected by a four-way valve 12 between the water inlet end of standpipe 104 and the water inlet end of backwash tube 105, backwash tube 105
Water side is connected by a triple valve 16 with the water side of raw water water inlet pipe 101 and the water inlet end of pure water pipe 102, and backwash tube
It is first check valve 6 of the water inlet end of self counter flushing pipe 105 to water side that the second magnetic valve 11 and direction are provided with 105.
Also include the control being all connected with the first magnetic valve 5, the second magnetic valve 11, waste water magnetic valve 9 and booster pump 7
Device, controller is provided with time control module, the first magnetic valve of time control 5 that controller sets according to time control module,
The keying of the second magnetic valve 11, waste water magnetic valve 9 and booster pump 7.
The water side of standpipe 104 is provided with pressure pot 13, and the water inlet of pressure pot 13 is connected with and is connected with controller
High-voltage switch gear 17, pressure information in the detection pressure pot 13 of the high-voltage switch gear 17 and pressure information that will detect is sent to control
Device, controller controls the keying of the first magnetic valve 5 and booster pump 7 according to the pressure information for receiving.
Water cleaning systems process is as described below：
Raw water is entered by the water inlet of raw water water inlet pipe 101, is pressurizeed by booster pump 7 after the preliminary purification of preposition filter core 4
Into reverse osmosis membrane filter element 8, water purification is so just obtained, eventually pass rearmounted filter core 14 and further adsorb, improve mouthfeel, as most
The water purification drunk eventually, while the condensed water after being processed through reverse osmosis membrane filter element 8 enters waste water outlet pipe 106, by wastewater effluent
The control discharge of waste water magnetic valve 9 on pipe 106.
This example is the primary flux purifier with pressure pot 13 and high-voltage switch gear 17, when pressure is arrived in pressure pot 13
Up to after the setting value of high-voltage switch gear 17, equipment stops water processed, and after pressure is reduced to 17 setting value of high-voltage switch gear, equipment starts system
Water, so circulation.It is general, user using it is preceding be all that pressure pot 13 is first made into full water purification, then when the quilt in pressure pot 13
After a certain amount of, after high-voltage switch gear 17 detects decline of pressure lower limit, water purification water route is just restarted, by the note of pressure pot 13
Full, such one is to prevent equipment frequent starting, and two is to ensure that water purification supply is sufficient all the time.
Purging system process is as described below：
After user has used water purification, according to the time that time control module in controller sets, controller opens second
Magnetic valve 11 and booster pump 7, close the first magnetic valve 5, and water purification in pressure pot 13 is introduced reverse osmosis membrane filter element 8 by system, to it
The concentrate that the TDS values of internal residual are larger is rinsed, and waste water is washed away by waste water magnetic valve 9, and water purification is then passed sequentially through
Second check valve 10, the second magnetic valve 11 and the first check valve 6 are back to reverse osmosis membrane filter element 8, reach the flushing of setting
System enters standby after time, and the specific time is according to Comprehensive Assessments such as size, pressure, the materials of reverse osmosis membrane filter element 8.
Before the instruction of cleaning water route is performed, first detect whether pressure pot 13 is filled with water, water purification is first carried out if water is discontented
System so that the first magnetic valve 5, booster pump 7 open water processed, waits after water is full in pressure pot 13 and just performs purging system.Such as holding
When row cleaning water route instructs, user needs to use water purification, and system still carries out the instruction of cleaning water route, supplied water by pressure pot 13.
Embodiment 2
As shown in Fig. 2 with embodiment 1, except that the water side of standpipe 104 is provided with storage tank 15, storage tank
The level sensor being connected with controller is provided with 15, the water level information in level sensor detection storage tank 15 will simultaneously be detected
Water level information be sent to controller, controller controls opening for the first magnetic valve 5 and booster pump 7 according to the water level information for receiving
Close.
Water cleaning systems process is as described below in the present embodiment：
Raw water is pressurizeed after the water inlet of raw water water inlet pipe 101 enters the preliminary purification of preposition filter core 4 by booster pump 7, is entered
Enter reverse osmosis membrane filter element 8, so just obtain water purification, eventually pass rearmounted filter core 14 and further adsorb, improve mouthfeel, as final
The water purification drunk, while the condensed water after being processed through reverse osmosis membrane filter element 8 enters waste water outlet pipe 106, by waste water outlet pipe
The control discharge of waste water magnetic valve 9 on 106.
Storage tank 15 is additionally provided with the present embodiment between reverse osmosis membrane filter element 8 and rearmounted filter core 14, is performed every time net
Storage tank 15 is filled with when water system is instructed.
Purging system process is as described below：
After user has used water purification, according to the time that time control module in controller sets, the second magnetic valve is opened
11 and booster pump 7, the first magnetic valve 5 is closed, water purification in pressure pot 13 is introduced reverse osmosis membrane filter element 8 by system, residual to its inside
The larger concentrate of the TDS values stayed is rinsed, and waste water is washed away by waste water magnetic valve 9, and water purification then passes through the first check valve
6th, the second magnetic valve 11 is back to reverse osmosis membrane filter element 8, and system enters standby, the specific time after the washing time for reaching setting
It is required that the Comprehensive Assessment such as size, pressure, material according to reverse osmosis membrane filter element 8.
This example is the big flux purifier with storage tank 15, and the volume of storage tank 15 is main according to flushing water route water
Depending on total amount, before storage tank 15 requires cleaning every time because being provided with condensate tank of dehumidifier, in theory, it is filled with storage tank 15 net
Water, if detecting storage tank 15 does not fill water before the instruction of cleaning water route is performed, then first carries out the instruction of water purification water route, by water storage
Case 15 is filled, and the instruction of cleaning water route is then performed again.
Embodiment 3
With embodiment 2, except that the expanding function that storage tank 15 has, separately water purification water outlet is set on storage tank 15
Mouthful so that storage tank 15 provides the user water purification as the device for storing larger water purification together with water purification water route.
In a word, presently preferred embodiments of the present invention, all equalizations made according to scope of the present invention patent be the foregoing is only
Change and modification, should all belong to the covering scope of patent of the present invention.
Claims (7)
1. having prevents the water purifier of reverse osmosis membrane secondary pollution function, including raw water water inlet pipe (101), raw water water inlet pipe
(101) water side is connected with pure water pipe (102) and water purification outlet pipe (103) in turn, and raw water water inlet pipe (101) is provided with first
Magnetic valve (5), pure water pipe (102) is provided with reverse osmosis membrane filter element (8), it is characterised in that：Also include standpipe (104) and recoil
Wash pipe (105), the water side of pure water pipe (102), the water inlet end of water purification outlet pipe (103), the water inlet end of standpipe (104) and
Connected by a four-way valve (12) between the water inlet end of backwash tube (105), the water side of backwash tube (105) passes through a threeway
Valve (16) is connected with the water side of raw water water inlet pipe (101) and the water inlet end of pure water pipe (102), and is set on backwash tube (105)
It is first check valve (6) of self counter flushing pipe (105) water inlet end to water side, standpipe to be equipped with the second magnetic valve (11) and direction
(104) water side is provided with storage tank (15) or pressure pot (13).
2. according to claim 1 with the water purifier for preventing reverse osmosis membrane secondary pollution function, it is characterised in that：Raw water
Be provided with preposition filter core (4) on water inlet pipe (101), preposition filter core (4) including be sequentially connected polypropylene melt blown filter (401),
Granular activated carbon filter core (402) and Carbon rod filter element (403).
3. according to claim 1 with the water purifier for preventing reverse osmosis membrane secondary pollution function, it is characterised in that：Water purification
Be additionally provided with pipe (102) booster pump (7) that is connected with reverse osmosis membrane filter element (8) water inlet and with reverse osmosis membrane filter element (8) water outlet
Second check valve (10) of mouth connection.
4. according to claim 3 with the water purifier for preventing reverse osmosis membrane secondary pollution function, it is characterised in that：Reverse osmosis
The waste water outlet pipe (106) being connected with reverse osmosis membrane filter element (8) wastewater effluent mouth, wastewater effluent are connected with permeable membrane filter core (8)
Pipe (106) is provided with waste water magnetic valve (9).
5. according to claim 4 with the water purifier for preventing reverse osmosis membrane secondary pollution function, it is characterised in that：Also wrap
The controller being all connected with the first magnetic valve (5), the second magnetic valve (11), waste water magnetic valve (9) and booster pump (7) is included, is controlled
Device processed is provided with time control module, the magnetic valve of time control first (5), second that controller sets according to time control module
The keying of magnetic valve (11), waste water magnetic valve (9) and booster pump (7).
6. according to claim 1 with the water purifier for preventing reverse osmosis membrane secondary pollution function, it is characterised in that：Water storage
The water side for managing (104) is provided with storage tank (15), and storage tank (15) is interior to be provided with the level sensor being connected with controller, water level
Sensor detects the water level information in storage tank (15) and the water level information that will be detected is sent to controller, and controller is according to connecing
The water level information for receiving controls the keying of the first magnetic valve (5) and booster pump (7).
7. according to claim 1 with the water purifier for preventing reverse osmosis membrane secondary pollution function, it is characterised in that：Water storage
The water side for managing (104) is provided with pressure pot (13), and the water inlet of pressure pot (13) is connected with the high pressure being connected with controller
Switch (17), high-voltage switch gear (17) detects the pressure information in pressure pot (13) and the pressure information that will be detected is sent to control
Device, controller controls the keying of the first magnetic valve (5) and booster pump (7) according to the pressure information for receiving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237466.9A CN106830187A (en) | 2016-12-28 | 2016-12-28 | With the water purifier for preventing reverse osmosis membrane secondary pollution function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611237466.9A CN106830187A (en) | 2016-12-28 | 2016-12-28 | With the water purifier for preventing reverse osmosis membrane secondary pollution function |
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| CN106830187A true CN106830187A (en) | 2017-06-13 |
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| CN201611237466.9A Pending CN106830187A (en) | 2016-12-28 | 2016-12-28 | With the water purifier for preventing reverse osmosis membrane secondary pollution function |
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Cited By (9)
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| CN107308817A (en) * | 2017-07-19 | 2017-11-03 | 安徽三品技术服务有限公司 | Water purifier reverse-osmosis-prevention device and its water purifier |
| CN108483579A (en) * | 2018-05-30 | 2018-09-04 | 郑州跃龙电子科技有限公司 | The water purifier of reverse osmosis membrane is rinsed in a kind of water purification suitable for different water sources |
| CN109205897A (en) * | 2017-06-30 | 2019-01-15 | 佛山市顺德区美的饮水机制造有限公司 | Purifier |
| CN109298727A (en) * | 2017-07-24 | 2019-02-01 | 芜湖美的厨卫电器制造有限公司 | Control method, device and the computer readable storage medium of water purifier |
| CN109607688A (en) * | 2019-01-30 | 2019-04-12 | 四川悠服科技有限公司 | The shutdown pure water guard method of the reverse osmosis membrane filter element of water purification machine and water purification machine |
| CN110615545A (en) * | 2019-09-04 | 2019-12-27 | 深圳安吉尔饮水产业集团有限公司 | All-purpose water purifier for kitchen |
| CN110790405A (en) * | 2018-08-01 | 2020-02-14 | 宁波方太厨具有限公司 | Backwashing water purification device and control method thereof |
| CN111924991A (en) * | 2020-08-14 | 2020-11-13 | 曹伟达 | Non-pressure non-wastewater high-quality reverse osmosis water purifier for water production |
| CN111960504A (en) * | 2020-08-18 | 2020-11-20 | 深圳市龙浩科技有限公司 | Automatic blowdown filter core of water pressure control |
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| CN109205897A (en) * | 2017-06-30 | 2019-01-15 | 佛山市顺德区美的饮水机制造有限公司 | Purifier |
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| CN108483579A (en) * | 2018-05-30 | 2018-09-04 | 郑州跃龙电子科技有限公司 | The water purifier of reverse osmosis membrane is rinsed in a kind of water purification suitable for different water sources |
| CN110790405A (en) * | 2018-08-01 | 2020-02-14 | 宁波方太厨具有限公司 | Backwashing water purification device and control method thereof |
| CN109607688A (en) * | 2019-01-30 | 2019-04-12 | 四川悠服科技有限公司 | The shutdown pure water guard method of the reverse osmosis membrane filter element of water purification machine and water purification machine |
| CN110615545A (en) * | 2019-09-04 | 2019-12-27 | 深圳安吉尔饮水产业集团有限公司 | All-purpose water purifier for kitchen |
| CN111924991A (en) * | 2020-08-14 | 2020-11-13 | 曹伟达 | Non-pressure non-wastewater high-quality reverse osmosis water purifier for water production |
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