CN115124155A - Water purification unit with membrane filter core monitoring function - Google Patents
Water purification unit with membrane filter core monitoring function Download PDFInfo
- Publication number
- CN115124155A CN115124155A CN202110323744.7A CN202110323744A CN115124155A CN 115124155 A CN115124155 A CN 115124155A CN 202110323744 A CN202110323744 A CN 202110323744A CN 115124155 A CN115124155 A CN 115124155A
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- Prior art keywords
- water
- membrane filter
- valve
- pressure sensor
- 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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- 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
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- 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
- B01D61/12—Controlling or regulating
-
- 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
-
- 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
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
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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
-
- 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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- 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)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses water purifying equipment with a membrane filter element monitoring function, wherein a first pressure sensor and a second pressure sensor are respectively arranged at a water inlet and a purified water outlet of a reverse osmosis membrane filter, the pressure sensors transmit detection signals to a differential pressure sensor, and the differential pressure sensor transmits differential pressure data to a PLC (programmable logic controller). When the PLC detects that the differential pressure increase rate is more than 15%, the raw water electromagnetic valve, the raw water booster pump, the high-pressure pump, the one-way check valve, the purified water booster pump and the purified water electromagnetic valve are controlled to be closed, the cleaning one-way valve is opened, and the reverse osmosis membrane filter element is cleaned; if the increase rate of the pressure difference is lower than 15% after one hour of cleaning, the PLC controller controls the raw water electromagnetic valve, the raw water booster pump, the high-pressure pump, the one-way check valve, the water purification booster pump and the water purification electromagnetic valve to be opened, the cleaning one-way valve is closed, the equipment recovers normal operation, and if the increase rate of the pressure difference is still larger than 15%, the PLC controller starts the audible and visual alarm to give an alarm to remind of replacing the reverse osmosis membrane filter element.
Description
Technical Field
The invention relates to the field of water treatment equipment, in particular to water purification equipment with a membrane filter element monitoring function.
Background
With the rapid development of society and economy, various water purifiers are gradually appearing on the market, and the water quality requirements of people for drinking water are gradually increased. The filter core is the core component of water purifier, can effectively intercept the harmful substance in aquatic, and when the filter core reached saturated condition, the pollutant attached to the surface blocking hole of filter core, leads to the water yield little, influences the filtration of quality of water, causes the "pure" degree of water to reduce. Drinking water which is not completely filtered may absorb some harmful impurities into the body and slowly accumulate in the human body, so that the filter element of the water purifier needs to be replaced regularly in the using process. Although the filter element can be replaced regularly to avoid the failure of the filter element function to a certain extent, the time for replacing the filter element is fixed time, so that the real-time water quality problem cannot be accurately judged, the cost waste caused by replacing the filter element in advance can be caused, the poor water quality caused by replacing the filter element can be delayed, the water quality of actual water of a user is poor, and the health is influenced, therefore, the water purifying equipment with the membrane filter element monitoring function is very necessary.
Disclosure of Invention
The invention provides water purification equipment with a membrane filter element monitoring function aiming at the problems in the prior art, wherein a pressure sensor and a differential pressure sensor are added at a water inlet and a purified water outlet of a reverse osmosis membrane filter of the original water purification equipment, the differential pressure value at two sides of the reverse osmosis membrane filter is monitored in real time, and when the increase rate of the monitored differential pressure reaches more than 15%, the reverse osmosis membrane filter element is cleaned; after cleaning for one hour, if the differential pressure increase rate is reduced to below 15%, the cleaning of the reverse osmosis membrane filter element is stopped, the water purifying equipment recovers to normal operation, and if the differential pressure increase rate is still above 15%, an alarm device for replacing the membrane filter element is started.
In order to realize the purpose, the invention provides the following technical scheme:
the utility model provides a water purification unit with membrane filter element monitoring function, its characterized in that, includes the raw water inlet, raw water solenoid valve, raw water tank, raw water booster pump, the cotton filter of PP, granule activated carbon filter, compression activated carbon filter, high-pressure pump, reverse osmosis membrane filter, one-way check valve, rearmounted activated carbon filter, water purification case, water purification booster pump, water purification solenoid valve, water purification delivery port that connect in order, still includes the water purification storage water tank, washs check valve, blowoff valve, dense water pond, differential pressure sensor, audible-visual annunciator, PLC controller. The water purification device is characterized in that a water purification outlet of the reverse osmosis membrane filter is connected with the one-way check valve, a concentrated water outlet is connected with the concentrated water tank, a drain valve is arranged in the middle of the water purification outlet, a water outlet of the water purification water storage tank is connected with a water inlet of the reverse osmosis membrane filter, and a cleaning one-way valve is arranged in the middle of the water purification outlet.
Furthermore, the raw water electromagnetic valve, the raw water booster pump, the high-pressure pump, the one-way check valve, the water purification booster pump, the water purification electromagnetic valve, the cleaning one-way valve, the blow-down valve and the audible and visual alarm are electrically connected with the PLC.
Furthermore, a first pressure sensor and a second pressure sensor are respectively installed at the water inlet and the purified water outlet of the reverse osmosis membrane filter, the first pressure sensor and the second pressure sensor are respectively electrically connected with a differential pressure sensor, and the differential pressure sensor is electrically connected with the PLC.
The invention has the beneficial effects that:
according to the water purifying equipment with the membrane filter element monitoring function, the first pressure sensor and the second pressure sensor are arranged at the water inlet and the purified water outlet of the reverse osmosis membrane filter, the first pressure sensor and the second pressure sensor transmit detected pressure data to the differential pressure sensor, the differential pressure sensor transmits calculated pressure difference data to the PLC, namely, the PLC monitors the pressure difference value of two sides in real time, when the increase rate of the monitored pressure difference exceeds 15%, the PLC can control the raw water electromagnetic valve, the raw water booster pump, the high-pressure pump, the one-way check valve, the purified water booster pump and the purified water electromagnetic valve to be closed, the cleaning one-way valve is opened, and the reverse osmosis membrane filter element is cleaned; if the increase rate of the pressure difference is lower than 15% after one hour of cleaning, the PLC controller controls the raw water electromagnetic valve, the raw water booster pump, the high-pressure pump, the one-way check valve, the water purification booster pump and the water purification electromagnetic valve to be opened, the cleaning one-way valve is closed, cleaning is stopped, the water purification equipment recovers to normal operation, and if the increase rate of the pressure difference is still larger than 15%, the PLC controller starts the audible and visual alarm to give an alarm, closes the cleaning one-way valve and reminds the replacement of the reverse osmosis membrane filter element. The invention can improve the accuracy of filter element condition judgment, reduce the filter element replacement cost, prolong the service life and further ensure the freshness and safety of effluent quality.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings required for describing the embodiments will be briefly described as follows:
fig. 1 is a schematic flow diagram of a water purification apparatus with a membrane cartridge monitoring function according to the present invention.
Fig. 2 is a control process block diagram of a water purification apparatus with a membrane cartridge monitoring function according to the present invention.
In FIGS. 1 to 2: 1. a raw water inlet; 2. a raw water solenoid valve; 3. a raw water tank; 4. a raw water booster pump; 5. a PP cotton filter; 6. a granular activated carbon filter; 7. compressing the activated carbon filter; 8. a high pressure pump; 9. a reverse osmosis membrane filter; 10. a one-way check valve; 11. a rear activated carbon filter; 12. a water purifying tank; 13. a purified water booster pump; 14. a water purification solenoid valve; 15. a purified water outlet; 16. a first pressure sensor; 17. a second pressure sensor; 18. a differential pressure sensor; 19. a purified water storage tank; 20. cleaning the one-way valve; 21. a blowdown valve; 22. a concentrated water tank; a PLC controller; 24. an audible and visual alarm.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Example 1
As shown in fig. 1 and 2, a water purifying apparatus with a membrane filter element monitoring function comprises a raw water inlet 1, a raw water electromagnetic valve 2, a raw water tank 3, a raw water booster pump 4, a PP cotton filter 5, a granular activated carbon filter 6, a compressed activated carbon filter 7, a high-pressure pump 8, a reverse osmosis membrane filter 9, a one-way check valve 10, a rear activated carbon filter 11, a purified water tank 12, a purified water booster pump 13, a purified water electromagnetic valve 14, a purified water outlet 15, a purified water storage tank 19, a cleaning one-way valve 20, a blow-down valve 21, a concentrated water tank 22, a differential pressure sensor 18, an audible and visual alarm 24 and a PLC controller 23 which are connected in sequence. The water purification outlet of the reverse osmosis membrane filter 9 is connected with the one-way check valve 10, the concentrated water outlet is connected with the concentrated water pool 22, the middle part is provided with a blow-down valve 21, the water outlet of the water purification water storage tank 19 is connected with the water inlet of the reverse osmosis membrane filter 9, and the middle part is provided with a cleaning one-way valve 20.
The raw water electromagnetic valve 2, the raw water booster pump 4, the high-pressure pump 8, the one-way check valve 10, the water purification booster pump 13, the water purification electromagnetic valve 14, the cleaning one-way valve 20, the blow-off valve 21 and the audible and visual alarm 24 are electrically connected with the PLC 23.
The water inlet and the purified water outlet of the reverse osmosis membrane filter 9 are respectively provided with a first pressure sensor 16 and a second pressure sensor 17, the first pressure sensor 16 and the second pressure sensor 17 are respectively electrically connected with a differential pressure sensor 18, and the differential pressure sensor 18 is electrically connected with a PLC (programmable logic controller) 23.
The more detailed explanation is:
the water purifying equipment starts to operate, municipal tap water enters a raw water tank 3 through a raw water inlet 1 and a raw water electromagnetic valve 2, then enters a PP cotton filter 5, a granular activated carbon filter 6 and a compressed activated carbon filter 7 through a raw water booster pump 4, can filter residual chlorine, peculiar smell and a part of impurity ions in water, then enters a reverse osmosis membrane filter 9 through a high-pressure pump 8, harmful substance such as bacterium, virus, heavy metal and organic matter in can filtering aquatic, dense water after reverse osmosis membrane filter 9 filters gets into dense pond 22 through blowoff valve 21, and the water purification after the filtration gets into rearmounted activated carbon filter 11 through one-way check valve 10, gets rid of the peculiar smell of aquatic and the microorganism that the later stage bred, and the filterable water of rearmounted activated carbon filter 11 gets into water purification case 12, finally reachs water purification delivery port 15 through water purification solenoid valve 14, provides the drinking water for the user.
A first pressure sensor 16 and a second pressure sensor 17 are respectively installed at a water inlet and a purified water outlet of the reverse osmosis membrane filter 9, the first pressure sensor 16 and the second pressure sensor 17 transmit detected pressure data to a differential pressure sensor 18, and the differential pressure sensor 18 transmits a calculated differential pressure value to a PLC (programmable logic controller) 23; when the PLC 23 monitors that the differential pressure increase rate exceeds 15%, the PLC 23 controls the raw water electromagnetic valve 2, the raw water booster pump 4, the high-pressure pump 8, the one-way check valve 10, the water purification booster pump 13 and the water purification electromagnetic valve 14 to be closed, and the cleaning one-way valve 20 is opened, namely, the reverse osmosis membrane filter element is cleaned; after one hour of cleaning, if the PLC controller 23 monitors that the differential pressure increase rate is lower than 15%, the PLC controller 23 controls the raw water electromagnetic valve 2, the raw water booster pump 4, the high-pressure pump 8, the one-way check valve 10, the water purification booster pump 13 and the water purification electromagnetic valve 14 to be opened, the cleaning one-way valve 20 is closed, the water purification equipment recovers to normal operation, if the PLC controller 23 monitors that the differential pressure increase rate is still higher than 15%, the PLC controller 23 starts the audible and visual alarm 24 to give an alarm, closes the cleaning one-way valve 20, and reminds the replacement of the reverse osmosis membrane filter element. The invention can recover the membrane flux of the reverse osmosis membrane in time, prolong the service life, prolong the replacement time of the membrane filter element, further ensure the safety and freshness of water quality and improve the user experience.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. A water purifying device with a membrane filter element monitoring function is characterized by comprising a raw water inlet, a raw water electromagnetic valve, a raw water tank, a raw water booster pump, a PP cotton filter, a granular activated carbon filter, a compressed activated carbon filter, a high-pressure pump, a reverse osmosis membrane filter, a one-way check valve, a rear activated carbon filter, a purified water tank, a purified water booster pump, a purified water electromagnetic valve and a purified water outlet which are sequentially connected, and further comprising a purified water storage tank, a cleaning one-way valve, a blow-down valve, a concentrated water tank, a differential pressure sensor, an audible and visual alarm and a PLC (programmable logic controller); the water purification device is characterized in that a water purification outlet of the reverse osmosis membrane filter is connected with the one-way check valve, a concentrated water outlet is connected with the concentrated water tank, a drain valve is arranged in the middle of the water purification outlet, a water outlet of the water purification water storage tank is connected with a water inlet of the reverse osmosis membrane filter, and a cleaning one-way valve is arranged in the middle of the water purification outlet.
2. The water purification device with the membrane filter element monitoring function as claimed in claim 1, wherein the raw water solenoid valve, the raw water booster pump, the high-pressure pump, the one-way check valve, the purified water booster pump, the purified water solenoid valve, the cleaning one-way valve, the blowdown valve, and the audible and visual alarm are electrically connected with the PLC.
3. The water purification device with the membrane filter element monitoring function as claimed in claim 1, wherein a first pressure sensor and a second pressure sensor are respectively installed at the water inlet and the purified water outlet of the reverse osmosis membrane filter, the first pressure sensor and the second pressure sensor are respectively and electrically connected with a differential pressure sensor, and the differential pressure sensor is electrically connected with a PLC (programmable logic controller).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110323744.7A CN115124155A (en) | 2021-03-26 | 2021-03-26 | Water purification unit with membrane filter core monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110323744.7A CN115124155A (en) | 2021-03-26 | 2021-03-26 | Water purification unit with membrane filter core monitoring function |
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| Publication Number | Publication Date |
|---|---|
| CN115124155A true CN115124155A (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110323744.7A Pending CN115124155A (en) | 2021-03-26 | 2021-03-26 | Water purification unit with membrane filter core monitoring function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282497A (en) * | 2023-01-05 | 2023-06-23 | 广州澄然环境科技有限公司 | Medical wastewater treatment system and treatment method |
-
2021
- 2021-03-26 CN CN202110323744.7A patent/CN115124155A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282497A (en) * | 2023-01-05 | 2023-06-23 | 广州澄然环境科技有限公司 | Medical wastewater treatment system and treatment method |
| CN116282497B (en) * | 2023-01-05 | 2023-09-15 | 广州澄然环境科技有限公司 | Medical wastewater treatment system and treatment method |
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