CN109336305B - Time-delay stop type household water purifying device and household water purifier - Google Patents
Time-delay stop type household water purifying device and household water purifier Download PDFInfo
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- CN109336305B CN109336305B CN201811462688.XA CN201811462688A CN109336305B CN 109336305 B CN109336305 B CN 109336305B CN 201811462688 A CN201811462688 A CN 201811462688A CN 109336305 B CN109336305 B CN 109336305B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 307
- 239000012528 membrane Substances 0.000 claims abstract description 55
- 238000011033 desalting Methods 0.000 claims abstract description 49
- 238000010612 desalination reaction Methods 0.000 claims abstract description 44
- 239000012141 concentrate Substances 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 34
- 238000000746 purification Methods 0.000 claims description 22
- 238000001223 reverse osmosis Methods 0.000 claims description 10
- 238000000909 electrodialysis Methods 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000001728 nano-filtration Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 9
- 230000000630 rising effect Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000008399 tap water Substances 0.000 description 5
- 235000020679 tap water Nutrition 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000035622 drinking Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- -1 salt ions Chemical class 0.000 description 2
- 208000034817 Waterborne disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- 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
- C02F2103/04—Non-contaminated water, e.g. for industrial water supply for obtaining ultra-pure water
-
- 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
- C02F2209/40—Liquid flow rate
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A time-delay stop type household water purifying device relates to the field of water treatment, and a first concentrated water outlet of a membrane desalination unit is communicated with a second water inlet of an electric desalination unit. After membrane desalination, the produced concentrated water is transported to an electric desalination unit for further treatment, and the water in the concentrated water is recovered. The time-delay stop type household water purifying device is reasonable in arrangement, simple to operate, and capable of improving the water utilization rate to more than 90%, and achieving the purpose of saving water resources. In addition, the time delay stop type household water purifying device comprises a time delay controller, and can control the booster pump and the electric desalting unit to continue to run for a period of time after the membrane desalting unit is closed, so that the salt concentration of the membrane desalting unit on the concentrate side is reduced, and the initial water concentration increase caused by salt permeation to the water producing side is avoided. The household water purifier has simple equipment, convenient operation, high water utilization rate and capacity of saving water resource. Meanwhile, the problem of rising of the initial water salt concentration is well solved, and a better water purifying effect is achieved.
Description
Technical Field
The invention relates to the field of water treatment, in particular to a time-delay stop type household water purifying device and a household water purifier.
Background
Along with the improvement of society, the living standard of people is improved, and people attach more and more importance to the sanitation of self-drinking water. At present, tap water is treated by a chlorination method, so that water-borne diseases can be effectively prevented, but the tap water contains salt, impurities, residual chlorine and the like, does not have the condition of direct drinking, and needs to be subjected to purification treatment before drinking.
In the prior art, a reverse osmosis membrane is often adopted to purify tap water so as to prepare pure water which can be directly drunk. The reverse osmosis membrane can effectively prevent substances such as bacteria, viruses, scale, salt ions and the like from passing through only water molecules, so that the safety of water is ensured. In the treatment process, bacteria, viruses, scale, salt ions and other substances which do not pass through the reverse osmosis membrane form concentrated water to be discharged. The volume ratio of the concentrated water to the pure water generated during purification of the common reverse osmosis membrane at present is about 1:3, namely 1/4 of the water is wasted as the concentrated water, and the water utilization rate is not high. Meanwhile, when the reverse osmosis water purifying device in the prior art stops running, salt accumulated on the concentrated water side slowly permeates through the permeable membrane and permeates to the water producing side, so that the salt concentration of the initial water produced on the water producing side is higher when the reverse osmosis water purifying device is started next time.
Disclosure of Invention
The invention aims to provide a time-delay stop type household water purifying device which can further treat concentrated water, recover water in the concentrated water, improve the utilization rate of the water and achieve the aim of saving resources. Meanwhile, the problem of rising of the initial water salt concentration is well solved, and a better water purifying effect is achieved.
The invention further aims to provide the household water purifier which comprises the delay stop type household water purifier, has a good water purifying effect, is high in water utilization rate, and can effectively save water resources. Meanwhile, the problem of rising of the initial water salt concentration is well solved, and a better water purifying effect is achieved.
Embodiments of the present invention are implemented as follows:
a time-lapse shutdown-type home water purification apparatus, comprising:
the input end of the booster pump is communicated with a raw water source through a normal pressure water delivery pipe;
a membrane desalination unit having a first water inlet, a first concentrate outlet, and a first produced water outlet; the first water inlet is communicated with the output end of the booster pump through a high-pressure water delivery pipe, and the first water outlet is communicated with a water terminal through a water outlet pipe; a first electromagnetic valve for controlling the opening and closing of the first water outlet is arranged at the first water outlet;
the electric desalting unit is provided with a second water inlet, a second concentrated water outlet and a second produced water outlet; the second water inlet is communicated with a first concentrated water outlet of the membrane desalination unit, and the second produced water outlet is communicated with the normal pressure water delivery pipe through a return pipeline; the second concentrated water outlet is communicated with a concentrated water discharge pipe; a second electromagnetic valve for controlling the opening and closing of the second concentrated water outlet is arranged at the second concentrated water outlet;
and the delay controller is respectively and electrically connected with the booster pump, the electric desalting unit, the first electromagnetic valve and the second electromagnetic valve and used for controlling the delay closing of the booster pump and the electric desalting unit and the opening and closing of the first electromagnetic valve and the second electromagnetic valve.
Further, in other preferred embodiments of the present invention, the membrane desalination unit comprises any one of a nanofiltration membrane device and a reverse osmosis membrane device.
Further, in other preferred embodiments of the present invention, the electric desalting unit comprises any one of an electrodialysis device and a capacitor desalting device; preferably, the electrodialysis device comprises a reversed pole electrodialysis device.
Further, in other preferred embodiments of the present invention, a PP cotton filter device and a first activated carbon filter device are disposed before the booster pump, and the normal pressure water pipe sequentially passes through the PP cotton filter device and the first activated carbon filter device and is communicated with the input end of the booster pump.
Further, in other preferred embodiments of the present invention, a pure water storage tank is disposed between the first water-producing outlet and the water-using terminal, the first water-producing outlet is connected to the input end of the pure water storage tank, and the output end of the pure water storage tank is connected to the water-using terminal.
Further, in other preferred embodiments of the present invention, a second activated carbon filter device is disposed between the first water outlet and the pure water tank, and the water outlet pipe sequentially passes through the second activated carbon filter device and the pure water tank from the first water outlet and is communicated with the water terminal.
Further, in other preferred embodiments of the present invention, the second concentrate outlet communicates with the inlet end of the concentrate storage tank through a concentrate discharge pipe.
Further, in other preferred embodiments of the present invention, the first concentrate outlet communicates with the concentrate storage tank at the inlet end thereof via a bypass conduit bypassing the electrical desalination unit.
Further, in other preferred embodiments of the present invention, a three-way valve is provided at the first concentrate outlet, and the three-way valve is respectively in communication with the bypass conduit and the electro-desalting unit.
A household water purifier comprises the time-delay stop type household water purifier.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a time-delay stop type household water purifying device which comprises a booster pump, a membrane desalting unit and an electric desalting unit, wherein a first concentrated water outlet of the membrane desalting unit is communicated with a second water inlet of the electric desalting unit. After membrane desalination, the produced concentrated water is transported to an electric desalination unit for further treatment, and the water in the concentrated water is recovered. The recovered water is conveyed back to the normal pressure water conveying pipe and then conveyed to the membrane desalination unit for treatment through the booster pump. The time-delay stop type household water purifying device is reasonable in arrangement and simple to operate, and the utilization rate of the whole time-delay stop type household water purifying device to water is improved to more than 90% by additionally arranging an electric desalting step, so that the purpose of saving water resources is achieved. In addition, the time delay stop type household water purifying device comprises a time delay controller, and can control the booster pump and the electric desalting unit to continue to run for a period of time after the membrane desalting unit is closed, so that the salt concentration of the membrane desalting unit on the concentrate side is reduced, and the initial water concentration increase caused by salt permeation to the water producing side is avoided.
Another object of the present invention is to provide a domestic water purifier comprising the above-mentioned delay-stop type domestic water purifier. The device is simple, convenient to operate, good in water purifying effect, high in water utilization rate and capable of effectively saving water resources. Meanwhile, the problem of rising of the initial water salt concentration is well solved, and a better water purifying effect is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a delay-stop type household water purifying device according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a delay-stop type household water purifying device according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a delay-stop type household water purifying device according to a third embodiment of the present invention;
fig. 4 is a schematic diagram of a time delay stop type household water purifying device according to a fourth embodiment of the present invention.
Icon: 100-time-delay stop type household water purifying device; 110-a booster pump; 120-membrane desalination unit; 130-an electro-desalting unit; 141-normal pressure water delivery pipe; 142-high pressure water delivery pipe; 143-a water outlet pipe; 144-return line; 145-a concentrate discharge pipe; 146-a first solenoid valve; 147-a second solenoid valve; 200-time delay stop type household water purifying device; 210-PP cotton filter device; 220-a first activated carbon filtration device; 230-a second activated carbon filtration device; 300-time delay stop type household water purifying device; 310-pure water storage tank; 400-time-delay stop type household water purifying device; 410-a concentrated water storage tank; 420-bypass pipe.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
First embodiment
The present embodiment provides a time-lapse shutdown type home water purification apparatus 100, which is shown with reference to fig. 1, including a booster pump 110, a membrane desalination unit 120, an electric desalination unit 130, and a time-lapse controller (not shown).
Wherein, the input end of the booster pump 110 is communicated with the raw water source through the normal pressure water pipe 141. Typically, the raw water source is municipal tap water, but is not limited to municipal tap water, and may be other sources of water. The booster pump 110 is used to boost raw water and deliver the raw water to the membrane desalination unit 120.
Further, the membrane desalination unit 120 includes any one of a nanofiltration membrane device and a reverse osmosis membrane device. Specifically, the membrane desalination unit 120 has a first water inlet, a first concentrate outlet, and a first produced water outlet. The first water inlet is communicated with the output end of the booster pump 110 through a high-pressure water delivery pipe 142, and the first water outlet is communicated with a water terminal through a water outlet pipe 143. The pressurized water enters the membrane desalination unit 120 through the first water inlet by the high-pressure water pipe 142, pure water and concentrated water are obtained after membrane desalination treatment, and the pure water is conveyed to a water terminal of a user, such as a tap, through the water outlet pipe 143 by the first water outlet. The produced concentrate is sent from the first concentrate outlet to the electro-desalting unit 130 for further treatment.
Alternatively, the electric desalting unit 130 includes any one of an electrodialysis device and a capacitor desalting device; preferably, the electrodialysis device comprises a reversed pole electrodialysis device. Specifically, the electro-desalting unit 130 has a second water inlet, a second concentrate outlet, and a second produced water outlet. The second water inlet is communicated with the first concentrated water outlet of the membrane desalination unit 120, and the second produced water outlet is communicated with the normal pressure water delivery pipe 141 through a return pipeline 144. The second concentrate outlet communicates with a concentrate discharge pipe 145. The concentrated water discharged from the first concentrated water outlet enters the electro-desalting unit 130 through the second water inlet, and is subjected to electro-desalting treatment to generate recyclable water with low salt content and ultra-concentrated water with high salt content. The recyclable water is discharged from the second water outlet, flows back to the normal pressure water pipe 141 through the return pipe 144 to be mixed with the raw water, and is transported to the membrane desalination unit 120 again through the booster pump 110 to be subjected to membrane desalination treatment.
In the present embodiment, a first solenoid valve 146 for controlling the opening and closing of the first produced water outlet is provided at the first produced water outlet; a second solenoid valve 147 for controlling the second concentrated water outlet to be opened and closed is arranged at the second concentrated water outlet. The delay controller is electrically connected to the booster pump 110, the electric desalting unit 130, the first electromagnetic valve 146 and the second electromagnetic valve 147, respectively, and is used for controlling the delay closing of the booster pump 110 and the electric desalting unit 130, and the opening and closing of the first electromagnetic valve 146 and the second electromagnetic valve 147. After the membrane desalination unit 120 stops operating, the time delay controller controls the first solenoid valve 146 to close, i.e., stops the water flow on the water producing side of the membrane desalination unit 120. Meanwhile, the normal operation of the booster pump 110 and the electric desalting unit 130 is maintained, and the water in the whole time-delay stop type household water purifying device 100 forms a circulation loop among the booster pump 110, the membrane desalting unit 120 and the electric desalting unit 130, so that the concentrated water on the concentrated water side of the membrane desalting unit 120 can continue to operate into the electric desalting unit 130 for electric desalting until the salt concentration of the concentrated water side and the salt concentration of the produced water side of the membrane desalting unit 120 are equivalent. Note that, in performing the above-described cyclic desalination process, the second electromagnetic valve 147 may be kept in an opened state to maintain the concentrated water discharge of the electric desalination unit 130, and at this time, the raw water may be replenished by the normal pressure water pipe 141 in order to maintain the water quantity in the cyclic circuit. In addition, the second electromagnetic valve 147 may be closed, that is, the electric desalting unit 130 is not discharged with the concentrated water, and at this time, salt is accumulated only on the concentrated water side of the electric desalting unit 130, and the water amount in the circulation circuit is not reduced, and additional raw water is not required to be supplemented. The former is suitable for the case where the salt concentration on the concentrate side of the membrane desalination unit 120 is high, and the latter is relatively suitable for the case where the salt concentration on the concentrate side of the membrane desalination unit 120 is low.
Second embodiment
The present embodiment provides a time-lapse shutdown-type home water purification apparatus 200, which includes a booster pump 110, a membrane desalination unit 120, an electric desalination unit 130, and a time-lapse controller (not shown), as shown with reference to fig. 2, which is a further improvement on the time-lapse shutdown-type home water purification apparatus 100 provided in the first embodiment.
In this embodiment, the booster pump 110 is provided with a PP cotton filter device 210 and a first activated carbon filter device 220 before, and the normal pressure water pipe 141 sequentially passes through the PP cotton filter device 210 and the first activated carbon filter device 220 and is connected to the input end of the booster pump 110. Before the raw water is pressurized by the booster pump 110, the raw water is filtered by the PP cotton filter device 210 and the first activated carbon filter device 220, and substances such as particle impurities, residual chlorine and the like possibly contained in the raw water are removed, so that on one hand, the effect of water purification can be improved, and on the other hand, better protection can be formed on the booster pump 110 and the reverse osmosis membrane.
Meanwhile, a second active carbon filter 230 is arranged between the first water outlet and the water terminal, and the second active carbon filter 230 further filters the water before the produced pure water reaches the water terminal, so that impurities such as scale and the like possibly introduced in the water treatment process are prevented from entering the water terminal.
Third embodiment
The present embodiment provides a time-lapse shutdown-type home water purification apparatus 300, which includes a booster pump 110, a membrane desalination unit 120, an electric desalination unit 130, and a time-lapse controller (not shown), as shown with reference to fig. 3, which is a further improvement on the time-lapse shutdown-type home water purification apparatus 200 provided by the second embodiment.
In this embodiment, a pure water storage tank 310 is disposed between the first water-producing outlet and the water-using terminal, the first water-producing outlet is connected to the input end of the pure water storage tank 310, and the output end of the pure water storage tank 310 is connected to the water-using terminal. The pure water tank 310 stores a large amount of pure water during one start-up of the booster pump 110, and provides a user with a long time of use. Thereby avoiding frequent start-up and shut-down of the booster pump 110, resulting in equipment loss.
Further, a second activated carbon filter 230 is disposed between the first water outlet and the pure water storage tank 310, and the water outlet pipe 143 sequentially passes through the second activated carbon filter 230 and the pure water storage tank 310 from the first water outlet and is communicated with a water terminal. The second activated carbon filter apparatus 230 further filters the water before the produced pure water reaches the pure water storage tank 310, preventing impurities such as scale, which may be introduced during the water treatment process, from entering the pure water storage tank 310.
Fourth embodiment
The present embodiment provides a time-lapse, stop-type home water purification apparatus 400, which includes a booster pump 110, a membrane desalination unit 120, an electric desalination unit 130, and a time-lapse controller (not shown), as shown with reference to fig. 4, which is a further improvement on the time-lapse, stop-type home water purification apparatus 300 provided by the third embodiment.
In the present embodiment, the second concentrate outlet communicates with the water inlet end of the concentrate storage tank 410 through the concentrate discharge pipe 145. Concentrated water contains more salt and other impurities, is not suitable for direct drinking, but can be applied to other scenes with low water requirements, such as flushing a toilet, wiping a floor, and the like. In the prior art, the concentrated water is often directly discharged, so that the waste of water resources is caused. The concentrated water can be stored by adding the concentrated water storage tank 410 and can be used elsewhere.
Preferably, the first concentrate outlet communicates with the water inlet end of the concentrate storage tank 410 by a bypass conduit 420 bypassing the electro-desalting unit 130. Specifically, a three-way valve is provided at the first concentrate outlet, and the three-way valve is respectively communicated with the bypass pipe 420 and the electric desalting unit 130. For some specific situations, when the demand of the user for the concentrated water is large, the opening state of the three-way valve can be adjusted, and the concentrated water treated by the membrane desalination unit 120 is directly conveyed to the concentrated water storage tank 410 through the bypass pipeline 420 for use, so as to meet the use of the concentrated water by the user.
In summary, the embodiment of the invention provides a time-lapse stop type household water purification device, which comprises a booster pump, a membrane desalination unit and an electric desalination unit, wherein a first concentrated water outlet of the membrane desalination unit is communicated with a second water inlet of the electric desalination unit. After membrane desalination, the produced concentrated water is transported to an electric desalination unit for further treatment, and the water in the concentrated water is recovered. The recovered water is conveyed back to the normal pressure water conveying pipe and then conveyed to the membrane desalination unit for treatment through the booster pump. The time-delay stop type household water purifying device is reasonable in arrangement and simple to operate, and the utilization rate of the whole time-delay stop type household water purifying device to water is improved to more than 90% by additionally arranging an electric desalting step, so that the purpose of saving water resources is achieved. In addition, the time delay stop type household water purifying device comprises a time delay controller, and can control the booster pump and the electric desalting unit to continue to run for a period of time after the membrane desalting unit is closed, so that the salt concentration of the membrane desalting unit on the concentrate side is reduced, and the initial water concentration increase caused by salt permeation to the water producing side is avoided.
Another object of the present invention is to provide a domestic water purifier comprising the above-mentioned delay-stop type domestic water purifier. The device is simple, convenient to operate, good in water purifying effect, high in water utilization rate and capable of effectively saving water resources. Meanwhile, the problem of rising of the initial water salt concentration is well solved, and a better water purifying effect is achieved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A time delay shutdown type household water purification device, which is characterized by comprising:
the input end of the booster pump is communicated with a raw water source through a normal pressure water delivery pipe;
a membrane desalination unit having a first water inlet, a first concentrate outlet, and a first produced water outlet; the first water inlet is communicated with the output end of the booster pump through a high-pressure water delivery pipe, and the first water outlet is communicated with a water terminal through a water outlet pipe; a first electromagnetic valve for controlling the opening and closing of the first water outlet is arranged at the first water outlet;
an electro-desalting unit having a second water inlet, a second concentrate outlet, and a second produced water outlet; the second water inlet is communicated with the first concentrated water outlet of the membrane desalination unit, and the second produced water outlet is communicated with the normal pressure water delivery pipe through a backflow pipeline; the second concentrated water outlet is communicated with a concentrated water discharge pipe; a second electromagnetic valve for controlling the second concentrated water outlet to be opened and closed is arranged at the second concentrated water outlet;
the delay controller is respectively and electrically connected with the booster pump, the electric desalting unit, the first electromagnetic valve and the second electromagnetic valve and used for controlling the delay closing of the booster pump and the electric desalting unit and the opening and closing of the first electromagnetic valve and the second electromagnetic valve;
the membrane desalting unit comprises any one of a nanofiltration membrane device and a reverse osmosis membrane device; the electric desalting unit comprises any one of an electrodialysis device and a capacitor desalting device.
2. The time-lapse shutdown-type household water purification device of claim 1, wherein the electrodialysis device comprises a reverse pole electrodialysis device.
3. The time-lapse shutdown type household water purification device according to claim 1, wherein a PP cotton filtration device and a first activated carbon filtration device are arranged in front of the booster pump, and the normal pressure water pipe sequentially passes through the PP cotton filtration device and the first activated carbon filtration device and is communicated with the input end of the booster pump.
4. The time-lapse shutdown type household water purification device as claimed in claim 1, wherein a pure water storage tank is provided between the first water outlet and the water terminal, the first water outlet is communicated with the input end of the pure water storage tank, and the output end of the pure water storage tank is communicated with the water terminal.
5. The time-lapse and stop type household water purification device according to claim 4, wherein a second activated carbon filter is disposed between the first water outlet and the pure water storage tank, and the water outlet pipe is connected to the water terminal through the second activated carbon filter and the pure water storage tank in order from the first water outlet.
6. The time-lapse shutdown-type household water purification device as claimed in claim 1, wherein the second concentrated water outlet is communicated with the water inlet end of the concentrated water storage tank through the concentrated water discharge pipe.
7. The time-lapse shutdown type household water purification device as claimed in claim 6, wherein the first concentrated water outlet is communicated with the water inlet end of the concentrated water storage tank by a bypass pipe bypassing the electric desalting unit.
8. The time-lapse shutdown type home water purification apparatus of claim 7, wherein the first concentrated water outlet is provided with a three-way valve, which is respectively communicated with the bypass pipe and the electric desalting unit.
9. A domestic water purification machine comprising a time delay shut-off type domestic water purification device as claimed in any one of claims 1 to 8.
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| CN109879492A (en) * | 2019-03-13 | 2019-06-14 | 佛山市云米电器科技有限公司 | A pure water machine membrane filtration system with desalination device |
| CN112645513B (en) * | 2019-10-11 | 2024-10-25 | 佛山市云米电器科技有限公司 | Water treatment method and system |
| CN114682095A (en) * | 2020-12-31 | 2022-07-01 | 厦门绿邦膜技术有限公司 | Low-energy-consumption membrane filtration system for online recovery of concentrated water energy |
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