CN106396158B - Reverse osmosis RO (reverse osmosis) water purifier system with no electric pump for optimizing net wastewater ratio and control method - Google Patents
Reverse osmosis RO (reverse osmosis) water purifier system with no electric pump for optimizing net wastewater ratio and control method Download PDFInfo
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- CN106396158B CN106396158B CN201611034861.7A CN201611034861A CN106396158B CN 106396158 B CN106396158 B CN 106396158B CN 201611034861 A CN201611034861 A CN 201611034861A CN 106396158 B CN106396158 B CN 106396158B
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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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
- 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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- 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 discloses a reverse osmosis RO water purifier system with an optimal clean wastewater ratio without an electric pump and a control method. The system comprises a pipeline combination, a water pressure sensing device and an automatic valve connected with the water pressure sensing device, and also comprises a water storage tank which is divided into two parts, wherein the two parts are separated by a diaphragm, and the two parts are connected with the pipeline combination through an interface. The pipeline combination and the water pressure sensing device control the output or the storage of purified water through the water pressure change generated when the purified water outlet valve is opened or closed. The system also includes a wastewater discharge system including a fixed restrictor valve and an adjustable restrictor valve. The size of the adjustable limiting valve is adjusted according to the water pressure and the water quality of raw water, so that the designed optimal pure water purity and the proportion of the wastewater discharge amount are achieved.
Description
Technical Field
The invention relates to a reverse osmosis RO water purifier system, in particular to a reverse osmosis RO water purifier system without an electric pump and capable of optimizing the ratio of purified water quality to wastewater discharge according to raw water quality and water pressure.
Background
The reverse osmosis RO water purifier is a device for extracting purified water by a reverse osmosis filtration principle, and the pure water is pressurized and filtered by a physical principle. Because the pore size of the reverse osmosis membrane is extremely small, almost all microorganisms, parasites, bacteria, even partial viruses and the like can be filtered, and therefore, the pure water filtered by the RO usually does not need to be disinfected by ultraviolet rays and can be directly drunk. Purified water which can be directly drunk and is produced by the existing RO water purifier is generally stored in a pressure barrel, and the water producing structure generally comprises a pre-treatment device connected with a tap water supply end, a water inlet electromagnetic valve connected with the output end of the pre-treatment device, a booster pump connected with the output end of the water inlet electromagnetic valve, and an RO membrane filter element connected with the output end of the booster pump. The waste water output end of the RO membrane filter element is connected with a raw water ratio and a flushing valve, then the waste water is output through a sewer pipe, the pure water output end of the RO membrane filter element is connected with a high-voltage switch, and the output end of the high-voltage switch is connected with a post-positioned activated carbon treatment device. The output end of the rear activated carbon treatment device is connected with a purified water outlet tap and a pressure barrel, and the pressure barrel is used for storing filtered purified water.
In the existing RO water purifier, a large amount of waste water is easy to generate in a water production structure, filtered waste water is directly discharged, a large amount of waste of water resources is caused, the existing RO water purifier generally discharges more than three times of waste water when producing one liter of purified water in a purified water filtering stage, and in the stage of storing the purified water into a water storage tank, the purified water always keeps higher water pressure, particularly in the last queue section of the water storage, the reverse water pressure is bigger and bigger, the forward pressure requirement on RO membrane filtration is higher, the RO water purifier needs electric pump pressurization, the quality of filtered water is reduced, and the generated waste water is increased.
In order to reduce the amount of discharged wastewater, there are several patents which propose to reduce or eliminate wastewater, but these proposed patent methods generally recycle the discharged wastewater by adding new equipment, etc. The method also brings other practical problems and disadvantages, such as the need of adding an electric pump, reducing the quality of filtered water, shortening the service life of RO membranes and the like, so that the method is not convenient for users at present and achieves applicable commercial water-saving RO water purifier products.
Because the water pressure of tap water supplied in each urban area in China has a large variation range from 0.2MPa to 0.4MPa, and meanwhile, the impurity and impurity ion contents in water quality are different, the conventional RO water purifier is mostly added with an electric pump, raw water is pressurized first in the earlier stage of filtration, the water pressure is increased to 0.4MPa or higher, filtration is started again, and the electric pump is used in the water purifier to bring inconvenience to the use of the water purifier. In addition, in order to achieve higher purity of purified water and prolong the service life of the RO membrane, a flow limiting valve at a wastewater outlet of the RO membrane is also arranged at a fixed and larger wastewater ratio, which also causes large wastewater quantity of most RO water purifiers and forms larger waste.
Disclosure of Invention
The present invention is to improve the disadvantages of most RO water purifiers, and provides a reverse osmosis RO water purifier system without electric pump for optimizing purified water quality and wastewater discharge ratio, which comprises: the case is internally provided with a first-stage front PP cotton filter device: second-stage front-end compressed activated carbon device: third stage reverse osmosis RO membrane filtration device, water storage tank device and wastewater discharge system: a fourth-stage rear active carbon filter device and a purified water outlet valve. The system is characterized by comprising a pipeline combination, a water pressure sensing device and an automatic valve connected with the water pressure sensing device, wherein raw water inlet water and/or RO wastewater is introduced into one part of the water storage tank through the water pressure change generated when the purified drinking water outlet valve is opened, purified water stored in the water storage tank is pressed out of the water storage tank through a diaphragm in the water storage tank, and the purified water is introduced into the purified water outlet valve: the pipeline combination and the water pressure sensing device can also automatically close raw water and/or RO wastewater entering the water storage tank through the change of water pressure when the purified drinking water outlet valve is closed so as to stop outputting purified water in the water storage tank. The waste water discharge system is characterized by comprising a fixed flow limiting valve and an adjustable flow limiting valve, and the waste water discharge system can be connected in series and/or in parallel to adjust the waste water ratio according to the quality of raw water and the pressure of the raw water so as to achieve the aim of optimizing the ratio of pure water purity to waste water discharge.
Preferably, the reverse osmosis RO water purifier system is characterized in that raw water enters the system and sequentially enters a first-stage PP cotton filter device, then enters a second-stage compressed activated carbon filter device, then enters a third-stage reverse osmosis RO membrane filter device, water entering the reverse osmosis RO membrane device becomes purified water after passing through a reverse osmosis membrane, purified water enters a fourth-stage rear activated carbon and then enters a purified water outlet valve, and meanwhile RO wastewater is split into RO wastewater in the third-stage reverse osmosis membrane filter device and is discharged from a wastewater outlet through a fixed flow limiting valve and an adjustable flow limiting valve.
Preferably, the water storage tank is divided into two parts, wherein the two parts are separated by a diaphragm, the two parts are connected with the pipeline combination through interfaces, one part is a part for storing purified water, and the other part is a part for storing raw water and/or RO wastewater.
Preferably, when the water pressure of the raw water and/or wastewater storage part of the water storage tank is greater than that of the purified water storage part, the entered raw water and/or wastewater presses the purified water out of the water storage tank to the fourth-stage post-positioned activated carbon filter device and the purified water outlet valve through the diaphragm device.
Preferably, the water entering the third-stage reverse osmosis RO membrane filter device is purified water after passing through the reverse osmosis membrane, and then can enter a part of the water storage tank for storing purified water.
Preferably, a portion of the water entering the third reverse osmosis RO membrane filter unit is discharged as wastewater through a fixed restrictor valve and an adjustable restrictor valve to a wastewater discharge. The size of the flow limiting valve with adjustable flow limiting capacity can be adjusted according to the water pressure and the water quality of raw water, so that the designed optimal pure water purity and the designed proportion of the wastewater discharge amount are achieved.
Preferably, the wastewater discharged from the third stage reverse osmosis RO membrane filtration device may also be combined through a pipe into a portion of the water storage tank where raw water and/or wastewater is stored.
Preferably, the water pressure sensing device comprises a pressure sensor and an automatic valve connected with the pressure sensor, when the water pressure is reduced after the purified water outlet valve is opened, the pressure sensor can automatically open the automatic valve connected with the water purifier system, and raw water enters the third-stage reverse osmosis RO membrane filtering device, so that the raw water enters the third-stage reverse osmosis RO membrane filtering device.
Preferably, the water pressure sensing device comprises a pressure sensor and an automatic valve connected with the pressure sensor, and when the pure water outlet valve is closed and the pure water fills all pure water storage spaces to increase the water pressure, the pressure sensor can automatically close the automatic valve of the water purifier system that the raw water enters the third-stage reverse osmosis RO membrane filtration device to stop the raw water from entering the third-stage reverse osmosis RO membrane filtration device.
Preferably, the water pressure sensing device comprises a pressure sensor and an automatic valve connected with the pressure sensor, and when the pure water outlet valve is closed and the pure water is filled in all pure water storage spaces to cause the increase of water pressure, the pressure sensor can automatically close the automatic valve of the water purifier system, wherein raw water enters the third-stage reverse osmosis RO membrane filtering device, so that the raw water stops entering the third-stage reverse osmosis RO membrane filtering device.
Preferably, the water pressure sensing device comprises a pressure sensor and an automatic valve connected with the pressure sensor, when the water pressure is increased after the purified water outlet valve is closed, the pressure sensor can automatically close the automatic valve connected with the raw water and/or RO wastewater storage part in the water storage tank to stop the raw water and/or RO wastewater from entering the raw water and/or wastewater storage part of the water storage tank.
As an improvement, the reverse osmosis RO water purifier system is characterized in that raw water enters the system and sequentially enters a first-stage compressed activated carbon filter device, then enters a second-stage PP cotton filter device, then enters a third-stage reverse osmosis RO membrane filter device, water entering the reverse osmosis RO membrane device becomes purified water after passing through a reverse osmosis membrane, the purified water enters a fourth-stage rear activated carbon and then enters a purified water outlet valve, and meanwhile, RO wastewater is split into RO wastewater in the third-stage reverse osmosis membrane filter device and is discharged from a wastewater outlet through a fixed flow limiting valve and an adjustable flow limiting valve.
The invention uses the pipeline combination and the water pressure sensing device which are designed in an optimized engineering way and the design structure of the storage tank to ensure that the purified water pressure of the reverse osmosis RO water purifier system is kept within the designed water pressure in the purified water storage process and does not increase along with the increase of the purified water storage quantity. Compared with the traditional reverse osmosis RO water purifier, the pure water pressure in the pure water storage process is continuously increased along with the increase of the pure water storage capacity, the pure water storage efficiency is greatly improved, and particularly, the pure water storage efficiency is improved in the stage that the storage tank is close to full. The adjustable flow limiting valve can optimize the purified water quality filtered by the reverse osmosis membrane and the RO wastewater discharge according to the specific raw water quality and water pressure, so that the purified water quality and the wastewater discharge are reasonable and optimal. Compared with the traditional reverse osmosis RO water purifier using a fixed flow limiting valve, the invention also improves the efficiency of the water purifier and reduces unnecessary wastewater discharge.
Drawings
FIG. 1 is a schematic diagram of a reverse osmosis RO water purifier system with an electroless pump for optimizing the quality of purified water and the wastewater discharge rate in accordance with an embodiment of the present invention.
FIG. 2 is another schematic diagram of a reverse osmosis RO water purifier system with an electroless pump to optimize the quality of purified water and the wastewater discharge rate in accordance with an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The reverse osmosis RO water purifier of the present invention as illustrated in FIG. 1 comprises:
a first-stage front PP cotton filter device 1; a second-stage front-end compressed activated carbon filter device 2; a water pressure sensing device at the purified water outlet and a water inlet automatic valve 3 connected with the water pressure sensing device for controlling raw water to enter the reverse osmosis membrane RO filtering device; a reverse osmosis membrane RO filtration device 4; a one-way valve 5 leading to a fourth-stage post-compression activated carbon filter device; a fourth stage post-compression activated carbon filter device 6; a switch valve (purified water tap) 7 for controlling the discharge of purified water; the rear end of the wastewater outlet of the RO membrane device is fixed with a flow limiting valve 8, and the rear end of the wastewater outlet of the RO membrane device is provided with an adjustable flow limiting valve 9; an inlet 10 for storing purified water in the purified water storage tank; a portion 11 storing purified water in the purified water storage tank; an inlet 12 for storing raw water and/or waste water in the purified water storage tank; a portion 13 for storing raw water and/or waste water in the purified water storage tank; a fixed restrictor valve 14 at the rear end of the raw water and/or waste water outlet in the water storage tank; a water pressure regulating valve 15 connected to the raw water inlet port; a water pressure sensing device at the purified water outlet and an automatic valve 16 connected with the water pressure sensing device for controlling the raw water and/or wastewater entering the water storage tank; a one-way valve 17 for controlling the flow of raw water into the water storage tank.
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1, in the process of preparing purified water, raw water enters a pipeline system and firstly enters a first-stage pre-PP cotton filter device 1, impurities with larger volume such as impurity particles in the raw water are filtered, then enters a second-stage pre-compressed activated carbon filter device 2, main chlorine and part of impurity ions in the raw water are removed through compressed activated carbon, then enters a water inlet automatic valve 3 connected with a water pressure sensing device at a purified water outlet, when the automatic valve 3 is opened by a pressure sensor connected with the automatic valve 3, the raw water enters a reverse osmosis membrane RO filter device 4 to filter the raw water, wherein main impurity ions, other volatile organic matters, microorganisms, bacteria, part of viruses and other impurities in the raw water are filtered to form purified water, and finally residues are removed through a one-way valve 5 and a fourth-stage post-compressed activated carbon filter device 6 to improve water taste. And simultaneously, the wastewater passes through a fixed restrictor valve 8 at the rear end of the wastewater outlet of the RO membrane device, and an adjustable restrictor valve 9 at the rear end of the wastewater outlet of the RO membrane device enters a wastewater port.
(0023) When the purified water outlet valve 7 is closed, purified water enters the purified water storage tank 11 through the purified water storage inlet 10 until the purified water storage tank 11 is filled with purified water. When the pure water fills all the storage spaces, the water pressure is increased, and the water pressure sensing device at the pure water outlet and the water inlet automatic valve 3 connected with the pure water outlet are automatically closed.
When the purified water outlet valve 7 is opened to take drinking water, the pressure sensors 3 and 16 will open the automatic valves 3 and 16 connected thereto due to the corresponding decrease in water pressure. After the water pressure sensing device at the purified water outlet and the water inlet automatic valve 3 connected with the water pressure sensing device are opened, raw water can reenter the water purifier system. The water pressure sensing device at the purified water outlet and the automatic valve 16 connected with the water pressure sensing device for controlling the raw water and/or the waste water entering the water storage tank are opened to enable the raw water to enter the water storage tank, so that the purified water in the water storage tank is extruded to a switch valve (purified water tap) 7 for controlling the purified water to be discharged through a diaphragm.
In the use process, a user can adjust the adjustable flow limiting valve 9 according to the water pressure and the water quality of raw water, so that the water quality of filtered purified water and the wastewater discharge amount reach the optimal proportion.
The invention may in turn operate in the manner illustrated in figure 2.
The reverse osmosis RO water purifier of the present invention as shown in FIG. 2 comprises:
a first stage front PP cotton filter device 21; a second stage front-end compressed activated carbon filter device 22; a water pressure sensing device at the purified water outlet and a water inlet automatic valve 23 connected with the water pressure sensing device for controlling raw water to enter the reverse osmosis membrane RO filtering device; a reverse osmosis membrane RO filtration device 24; a check valve 25 leading to the fourth stage post-compression activated carbon filter; a fourth stage post-compression activated carbon filter device 26; a switch valve (purified water tap) 27 for controlling the discharge of purified water; a flow limiting valve 28 is fixed at the rear end of the wastewater outlet of the RO membrane device, and an adjustable flow limiting valve 29 is arranged at the rear end of the wastewater outlet of the RO membrane device; an inlet 30 for storing purified water in the purified water storage tank; a portion 31 storing purified water in the purified water storage tank; an inlet 32 for storing raw water and/or waste water in the purified water storage tank; a portion 33 for storing raw water and/or waste water in the purified water storage tank; a fixed restrictor valve 34 at the rear end of the raw water and/or waste water outlet in the water storage tank; a water pressure regulating valve 35 connected to the RO wastewater outlet; a water pressure sensing device at the purified water outlet and an automatic valve 36 connected to control the raw water and/or waste water entering the water storage tank; a one-way valve 37 for controlling the flow of RO wastewater into the water reservoir.
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 2, in the process of preparing purified water, raw water enters a pipeline system, firstly enters a first-stage pre-PP cotton filter 21, filters out impurities with larger volume such as impurity particles in the raw water, then enters a second-stage pre-compressed activated carbon filter 22, removes main chlorine and part of impurity ions in the raw water through compressed activated carbon, then enters a water inlet automatic valve 23 connected with a water pressure sensing device at a purified water outlet, and when the automatic valve 23 is opened by a pressure sensor connected with the automatic valve 23, the raw water enters a reverse osmosis membrane RO filter 24 to filter the raw water, wherein main impurity ions, other volatile organic matters, microorganisms, bacteria, part of viruses and other impurities in the raw water are filtered out to form purified water, and finally residues are removed through a one-way valve 25 and enter a fourth-stage post-compressed activated carbon filter 26 to improve water taste. While at the same time the wastewater will pass through a fixed restrictor valve 28 at the rear end of the RO membrane unit wastewater outlet, an adjustable restrictor valve 29 at the rear end of the RO membrane unit wastewater outlet into the wastewater port.
When the purified water outlet valve 27 is closed, purified water enters the purified water storage tank portion 31 through the purified water storage tank inlet 30 until the purified water storage tank portion 31 is filled with purified water. When the purified water fills all the storage spaces, the water pressure increases, and the water pressure sensing device at the purified water outlet and the water inlet automatic valve 23 connected with the water pressure sensing device are automatically closed.
When the purified water outlet valve 27 is opened to take drinking water, the pressure sensors 23 and 36 will open the automatic valves 23 and 36 connected thereto due to the corresponding decrease in water pressure. After the water pressure sensing device at the purified water outlet and the water inlet automatic valve 23 connected with the water pressure sensing device are opened, raw water enters the water purifier system again. The water pressure sensing device at the purified water outlet and the automatic valve 36 connected with the water pressure sensing device for controlling the raw water and/or waste water entering the water storage tank are opened to enable RO waste water to enter the water storage tank, so that purified water in the water storage tank is extruded to a switch valve (purified water tap) 27 for controlling the purified water to be discharged through a diaphragm.
In the use process, a user can adjust the adjustable limiting valve 29 according to the water pressure and the water quality of raw water so as to lead the water quality of filtered purified water and the wastewater discharge amount to reach the optimal proportion.
Claims (10)
1. A reverse osmosis RO water purifier system without an electric pump to optimize the net wastewater ratio, comprising: the system comprises a pipeline combination and a water pressure sensing device, an automatic valve connected with the water pressure sensing device, a water pressure sensing device at a pure water outlet, a water inlet automatic valve connected with the water pressure sensing device and used for controlling raw water to enter the reverse osmosis membrane RO filter device, a one-way valve connected with the water pressure sensing device at the pure water outlet, a switch valve used for controlling pure water to be discharged, a fixed limiting valve at the rear end of a waste water outlet of the RO membrane device, an adjustable limiting valve at the rear end of the waste water outlet of the RO membrane device, an inlet for storing pure water in the pure water storage tank, a part for storing pure water in the pure water storage tank, an inlet for storing raw water and/or waste water in the pure water storage tank, a part for storing raw water and/or waste water in the pure water storage tank, a fixed limiting valve at the rear end of the raw water outlet, a water pressure regulating valve connected with the raw water pressure sensing device at the pure water outlet, a water inlet and a valve connected with the automatic control inlet and/or a part for controlling raw water to flow into the pure water storage tank, and a one-way valve connected with the automatic control inlet and/or the waste water storage tank; the waste water discharge system comprises a fixed flow limiting valve and an adjustable flow limiting valve which are connected in series and/or parallel; the water storage tank is divided into two parts, wherein the two parts are separated by a diaphragm, the two parts are connected with the pipeline combination through interfaces, one part is a part for storing purified water, and the other part is a part for storing raw water and/or RO wastewater.
2. A control method of a reverse osmosis RO water purifier system with no electric pump for optimizing the water purification and waste water ratio, characterized in that the reverse osmosis RO water purifier system in claim 1 is used, raw water is introduced into water and/or RO waste water is introduced into one part of the above water storage tank through a pipeline combination and a water pressure sensing device by means of water pressure change generated when a purified drinking water outlet valve is opened, purified water stored in the water storage tank is pressed out of the water storage tank through a diaphragm in the water storage tank, and the purified water is introduced into a purified water outlet valve; or the pipeline combination and the water pressure sensing device automatically close raw water and/or RO wastewater entering the water storage tank through the change of water pressure when the purified drinking water outlet valve is closed so as to stop outputting purified water in the water storage tank; when the water pressure of the raw water and/or wastewater storage part of the water storage tank is larger than that of the purified water storage part, the entered raw water and/or wastewater is pressed out of the water storage tank to a fourth-stage post-positioned activated carbon filter device and a purified water outlet valve through a diaphragm device.
3. The control method of a reverse osmosis RO water purifier system according to claim 2, wherein raw water enters the system and sequentially enters a first-stage PP cotton filter device, then enters a second-stage compressed activated carbon filter device, then enters a third-stage reverse osmosis RO membrane filter device, water entering the reverse osmosis RO membrane device passes through a reverse osmosis membrane and becomes purified water, purified water enters a fourth-stage post-activated carbon and then enters a purified water outlet valve, and at the same time, a split-flow RO wastewater in the third-stage reverse osmosis membrane filter device is discharged from a wastewater outlet through a fixed flow limiting valve and an adjustable flow limiting valve; the water entering the third-stage reverse osmosis RO membrane filter device can also enter a part of the water storage tank for storing purified water after passing through the reverse osmosis membrane to become purified water.
4. The method of controlling a reverse osmosis RO water purifier system according to claim 2 wherein a portion of the water entering the third reverse osmosis RO membrane filtration device is discharged as wastewater through a fixed restrictor valve and an adjustable restrictor valve to a wastewater discharge port; the size of the flow limiting valve with adjustable flow limiting capacity can be adjusted according to the water pressure and the water quality of raw water, so that the designed optimal pure water purity and the designed proportion of the wastewater discharge amount are achieved.
5. A control method of a reverse osmosis RO water purifier system according to claim 3, characterized in that the wastewater discharged from the third stage reverse osmosis RO membrane filtration device can also be combined through a pipe into the portion of the water storage tank where raw water and/or wastewater is stored.
6. The method according to claim 2, wherein the water pressure sensor comprises a pressure sensor and an automatic valve connected to the pressure sensor, and when the purified water outlet valve is opened to reduce the water pressure, the pressure sensor automatically opens the automatic valve connected to the water purifier system to allow the raw water to enter the third stage reverse osmosis RO membrane filter device.
7. The control method of the reverse osmosis RO water purifier system according to claim 2, wherein the water pressure sensing means comprises a pressure sensor and an automatic valve connected to the pressure sensor, and the pressure sensor automatically opens the automatic valve connected to the raw water and/or RO wastewater storage part of the water storage tank to allow the raw water and/or RO wastewater to enter the raw water and/or wastewater storage part of the water storage tank when the water pressure is reduced after the purified water outlet valve is opened.
8. The method according to claim 2, wherein the water pressure sensor comprises a pressure sensor and an automatic valve connected to the pressure sensor, and when the purified water outlet valve is closed and the purified water fills all the purified water storage spaces to increase the water pressure, the pressure sensor automatically closes the automatic valve of the water purifier system for the raw water to enter the third stage reverse osmosis membrane filter device to stop the raw water from entering the third stage reverse osmosis membrane filter device.
9. The control method of the reverse osmosis RO water purifier system according to claim 2, wherein the water pressure sensor comprises a pressure sensor and an automatic valve connected to the pressure sensor, and the pressure sensor automatically closes the automatic valve connected to the raw water and/or RO wastewater storage part of the water storage tank to stop the raw water and/or RO wastewater from entering the raw water and/or wastewater storage part of the water storage tank when the water pressure increases after the purified water outlet valve is closed.
10. The method according to claim 2, wherein raw water enters the system and sequentially enters the first-stage compressed activated carbon filter PP cotton filter, then enters the second-stage PP cotton filter, then enters the third-stage reverse osmosis RO membrane filter, water entering the reverse osmosis RO membrane is purified water after passing through the reverse osmosis membrane, purified water enters the fourth-stage post-activated carbon and then enters the purified water outlet valve, and at the same time, a split-flow RO wastewater in the third-stage reverse osmosis membrane filter is discharged from the wastewater outlet through a fixed flow limiting valve and an adjustable flow limiting valve.
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| CN201611034861.7A CN106396158B (en) | 2016-11-23 | 2016-11-23 | Reverse osmosis RO (reverse osmosis) water purifier system with no electric pump for optimizing net wastewater ratio and control method |
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| CN201611034861.7A CN106396158B (en) | 2016-11-23 | 2016-11-23 | Reverse osmosis RO (reverse osmosis) water purifier system with no electric pump for optimizing net wastewater ratio and control method |
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| CN107032513A (en) * | 2017-06-02 | 2017-08-11 | 上海洁臣水处理设备有限公司 | A kind of low waste water process for purifying water of energy-conserving and environment-protective |
| CN109293021B (en) * | 2017-07-24 | 2021-12-03 | 芜湖美的厨卫电器制造有限公司 | Control method and device of water purifier and computer readable storage medium |
| CN109293020B (en) * | 2017-07-24 | 2021-12-03 | 芜湖美的厨卫电器制造有限公司 | Control method and device of water purifier and computer readable storage medium |
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