CN108821462B - Fluid filtering device and water purifier - Google Patents
Fluid filtering device and water purifier Download PDFInfo
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- CN108821462B CN108821462B CN201810833436.7A CN201810833436A CN108821462B CN 108821462 B CN108821462 B CN 108821462B CN 201810833436 A CN201810833436 A CN 201810833436A CN 108821462 B CN108821462 B CN 108821462B
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- water purifier
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 202
- 239000012530 fluid Substances 0.000 title claims abstract description 96
- 238000001914 filtration Methods 0.000 title claims abstract description 61
- 239000008213 purified water Substances 0.000 claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 238000001223 reverse osmosis Methods 0.000 claims description 27
- 239000012528 membrane Substances 0.000 claims description 21
- 239000002351 wastewater Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 3
- 244000261422 Lysimachia clethroides Species 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000035622 drinking Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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
The invention provides a fluid filtering device and a water purifier comprising the same, relates to the technical field of water purifying equipment, and solves the technical problem that the TDS of the previous cups of water is high when the water is taken after the water purifier is stopped. The fluid filtering device comprises a TDS filtering device, a purified water supply pipeline and a pipeline switching device, wherein the inlet openings of the TDS filtering device and the purified water supply pipeline are connected in parallel and then connected with the fluid inlet of the fluid filtering device through the pipeline switching device, the outlet openings of the TDS filtering device and the purified water supply pipeline are connected in parallel and then connected with the fluid outlet of the fluid filtering device, and the pipeline switching device can select one inlet opening of the TDS filtering device and the purified water supply pipeline to be communicated with the fluid inlet of the fluid filtering device. The invention reduces the TDS height of the previous cups of water when the water is taken after the water purifier is stopped, and effectively prolongs the service life of the resin filter element.
Description
Technical Field
The invention relates to the technical field of water purifying equipment, in particular to a fluid filtering device and a water purifier comprising the same.
Background
For the reverse osmosis water purifier, the problem that the TDS content of the first cups of water is high when the water is taken after the water is stopped for a long time and then started is solved, and the main reason for the phenomenon is that the reverse osmosis membrane is permeated, so that inorganic salt ions cross the membrane and enter the reverse osmosis water. TDS (total dissolved solids), also known as total dissolved solids, indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved substances contained in the water. In order to solve the problem, there is a prior art that water with high TDS content caused by shutdown is replaced with pure water and a discharge treatment is performed, but the solution has a problem that the replaced water is directly discharged, resulting in waste of water resources; in the prior art, the resin filter core is added into the waterway system to serve as a TDS filter device to treat the TDS problem of the previous cups of water, and the resin filter core is positioned on the water producing waterway to exchange normal produced water, which is equivalent to doing idle work, and then is easy to cause resin damage under the continuous hydraulic impact to cause the life attenuation of physical resin. Aiming at the problems, the invention provides a technical scheme which can solve the problem that the TDS of the first cups of water is high when the water is taken after the shutdown, and can not waste water resources and prolong the service life of the resin filter element.
Disclosure of Invention
The invention aims to provide a fluid filtering device and a water purifier comprising the same, so as to solve the technical problem that the TDS of the previous cups of water is high when the water purifier is stopped and then taken.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a fluid filtering device, which comprises a TDS filtering device, a purified water supply pipeline and a pipeline switching device, wherein:
the TDS filter device is connected with the fluid inlet of the fluid filter device through the pipeline switching device after being connected in parallel with the inlet of the purified water supply pipeline, the TDS filter device is connected with the fluid outlet of the fluid filter device after being connected in parallel with the outlet of the purified water supply pipeline, and the pipeline switching device can select the inlet of one of the TDS filter device and the purified water supply pipeline to be communicated with the fluid inlet of the fluid filter device.
As a further improvement of the present invention, the pipeline switching device includes a first solenoid valve and a second solenoid valve respectively provided at the inlet of the TDS filter device and the inlet of the purified water supply pipeline. The switch states of the first electromagnetic valve and the second electromagnetic valve are opposite.
As a further improvement of the present invention, the pipeline switching device includes a three-way solenoid valve, and three connection ports of the three-way solenoid valve are respectively connected with the fluid inlet of the fluid filtering device, the TDS filtering device and the inlet of the purified water supply pipeline.
As a further improvement of the invention, a one-way valve is arranged between the outflow opening of the TDS filter device and the fluid outlet of the fluid filter device, which one-way valve allows fluid to flow from the outflow opening of the TDS filter device to the fluid outlet of the fluid filter device
As a further improvement of the invention, the TDS filtration device is a mixed bed resin filter element.
As a further improvement of the invention, the device also comprises a pretreatment system, a booster pump and a reverse osmosis membrane filter element which are connected, wherein a purified water outlet of the reverse osmosis membrane filter element is connected with a fluid inlet of the fluid filtering device, and the pretreatment system is connected with a raw water inlet of the reverse osmosis membrane filter element through the booster pump.
As a further improvement of the invention, the waste water outlet of the reverse osmosis membrane filter element is connected with a drainage pipeline provided with a concentrated water electromagnetic valve, and a waste water ratio electromagnetic valve is connected beside the concentrated water electromagnetic valve in parallel.
As a further improvement of the invention, the filter further comprises a post-filter element, wherein the liquid inlet of the post-filter element is connected with the fluid outlet of the fluid filtering device, and the liquid outlet of the post-filter element is connected with downstream water equipment. The water-using device is a gooseneck tap.
The water purifier provided by the invention comprises the fluid filtering device and the controller, wherein the controller can control the pipeline switching device to act so as to realize the selection of a fluid conduction passage in the fluid filtering device.
As a further improvement of the invention, the water purifier has three operation modes, namely a continuous water taking mode, an intermittent water taking mode and a stop restarting mode.
As a further improvement of the invention, the continuous water taking mode is an operation mode with water taking time intervals of less than 30 minutes; the intermittent water taking mode is an operation mode that the water taking interval is more than 30 minutes; the shutdown restarting mode is a mode of restarting water taking operation after power failure. The controller is defined as a discontinuous water taking mode when the power is turned on again after power is cut off.
As a further improvement of the invention, the water purifier is a reverse osmosis water purifier.
The invention also provides a method for reducing the TDS of the effluent by using the fluid filtering device, which comprises the following steps:
step A: starting the fluid filtering device, and controlling the fluid to enter the TDS filtering device by the pipeline switching device for filtering and then conveying when the entering fluid TDS is high in requirement for filtering;
and (B) step (B): when the TDS of the fluid entering the fluid inlet of the fluid filtering device reaches the standard after the step A is operated for a set time, the pipeline switching device switches and controls the fluid to enter the purified water supply pipeline for conveying;
step C: when the TDS of the entering fluid reaches the standard and filtration is not needed, the pipeline switching device controls the fluid to enter the purified water supply pipeline for conveying.
The invention also provides a method for reducing the TDS of the water purifier outlet water, which comprises the following steps:
step A: control signals corresponding to three operation modes of the water purifier are preset in the controller;
and (B) step (B): starting the water purifier to start water purifying operation;
step C: the controller judges the running mode of the water purifier: the controller is used for receiving the working state signal of the booster pump to judge the running mode; when the booster pump stops working, a signal is fed back to the controller, the controller starts timing, when the booster pump is started next time and water is taken again, the controller judges the running mode of the water purifier according to the interval time, controls the pipeline switching device to act according to different preset control signals corresponding to different running modes to realize waterway change, and simultaneously the timing in the controller is cleared, and the timing is restarted when waiting for the next time the booster pump stops;
step D: when the running mode of the water purifier is a continuous water taking mode: the water purifier is used for normally producing water, the controller controls the second electromagnetic valve to be closed, and the first electromagnetic valve is opened; at the moment, water flow sequentially passes through a pretreatment system, a booster pump, a reverse osmosis membrane filter element, a first electromagnetic valve, a rear filter element and a gooseneck faucet;
when the running mode of the water purifier is a discontinuous water taking mode or a stop restarting mode: the water purifier water outlet is purified by a TDS filter device, and the two steps of operation are divided into:
the first step: the controller controls the first electromagnetic valve to be closed and the second electromagnetic valve to be opened, and the trend of the water flow is a pretreatment system, a booster pump, a reverse osmosis membrane filter element, the second electromagnetic valve, a TDS filter device, a one-way valve, a rear filter element and a gooseneck faucet;
and a second step of: when the first step is operated for 30 seconds, the controller controls the first electromagnetic valve to be opened, the second electromagnetic valve is closed, and the water flow direction is the same as the water flow direction when the water purifier is in normal water production.
The parallel waterway is arranged behind the reverse osmosis membrane filter element, the waterway trend during normal water making and water taking after stopping is controlled through the electromagnetic valve, the problems that the interval water taking time of the reverse osmosis water purifier is long or the TDS of the first cups of water is high during water taking after stopping are effectively solved, and the method is helpful for improving the water quality of the first cups of water.
The beneficial effects of the invention are as follows:
1) According to the invention, the resin filter element is added in the reverse osmosis waterway system, so that the high TDS in the previous cups of water can be removed, and the quality of the discharged water is improved;
2) According to the invention, the electromagnetic valve arranged behind the reverse osmosis membrane can control the switching of the waterway according to the shutdown and startup states of the water purifier, so that the service life of the resin filter element can be effectively prolonged while the TDS of the previous cups of water is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system flow diagram of a first embodiment of a filtration system of a water purifier of the present invention;
fig. 2 is a system flow diagram of a second embodiment of a filtration system of a water purifier according to the present invention.
In the figure 1, a pretreatment system; 2. a booster pump; 3. a reverse osmosis membrane filter element; 4. a waste water ratio electromagnetic valve; 5. a concentrated water electromagnetic valve; 6. a first electromagnetic valve; 7. a second electromagnetic valve; 8. a mixed bed resin filter element; 9. a one-way valve; 10. a rear filter element; 11. a gooseneck tap; 12. a three-way electromagnetic valve; 13. a purified water supply line; 14. a feed port; 15. a fluid inlet; 16. a flow outlet; 17. a fluid outlet; 18. a purified water outlet; 19. a raw water inlet; 20. a waste water outlet; 21. a liquid inlet; 22. and a liquid outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
As shown in fig. 1, the present invention provides a fluid filtering device, which includes a TDS filtering device, a purified water supply pipeline 13, and a pipeline switching device, wherein the TDS filtering device is connected with a fluid inlet 15 of the fluid filtering device through the pipeline switching device after being connected in parallel with inlet openings 14 of the two purified water supply pipelines 13, the TDS filtering device is connected with a fluid outlet 17 of the fluid filtering device after being connected in parallel with outlet openings 16 of the two purified water supply pipelines 13, and the pipeline switching device can select the inlet opening 14 of one of the two TDS filtering device and the purified water supply pipeline 13 to be communicated with the fluid inlet 15 of the fluid filtering device. In the invention, the TDS filter device is a mixed bed resin filter element 8.
A one-way valve 9 is arranged between the outlet 16 of the mixed bed resin cartridge 8 and the fluid outlet 17 of the fluid filtration device, the one-way valve 9 allowing fluid to flow from the outlet 16 of the mixed bed resin cartridge 8 to the fluid outlet 17 of the fluid filtration device.
The pretreatment system 1 is connected with a raw water inlet 19 of the reverse osmosis membrane filter element 3 through the booster pump 2. The waste water outlet 20 of the reverse osmosis membrane filter element 3 is connected with a drainage pipeline of a concentrated water electromagnetic valve 5, and a waste water ratio electromagnetic valve 4 is connected beside the concentrated water electromagnetic valve 5 in parallel. The filter further comprises a rear filter element (10) arranged at the downstream of the fluid filtering device, a liquid inlet 21 of the rear filter element 10 is connected with a fluid outlet 17 of the fluid filtering device, and a liquid outlet 22 of the rear filter element 10 is connected with downstream water equipment. In the present invention, the water-consuming device is a gooseneck faucet 11.
Example 1:
as shown in fig. 1, the pipeline switching device comprises a first electromagnetic valve 6 and a second electromagnetic valve 7, wherein the first electromagnetic valve 6 is arranged at the inlet 14 of the purified water supply pipeline 13, and the second electromagnetic valve 7 is arranged at the inlet 14 of the mixed bed resin filter element 8. When the TDS treatment is needed for the previous cups of water, the first electromagnetic valve 6 is closed, and the second electromagnetic valve 7 is opened, so that the polluted water from the purified water outlet 18 of the reverse osmosis membrane filter element 3 reaches the gooseneck faucet 11 for drinking after being treated by the mixed bed resin filter element 8. When the TDS of the water discharged from the reverse osmosis membrane filter element 3 after being treated for a period of time is qualified, the first electromagnetic valve 6 is opened, and the second electromagnetic valve 7 is closed, so that purified water directly reaches the gooseneck faucet 11 for drinking through the purified water supply pipeline 13; the structure design can solve the problem that the TDS of the previous cups of water is high when water is taken after the machine is stopped, so that water resources are not wasted; meanwhile, the mixed bed resin filter element 8 can be stopped when auxiliary purification is not needed, and all the water reaching the standard is not needed to flow into the resin filter element for secondary filtration, so that the service life of the resin filter element is prolonged.
Example 2:
as shown in fig. 2, embodiment 2 differs from embodiment 1 only in that the line switching device includes a three-way solenoid valve 12, and three connection ports of the three-way solenoid valve 12 are connected to a fluid inlet 15 of the fluid filtering device, the TDS filtering device, and an inflow port 14 of the purified water supply line, respectively. Through the structural design, two electromagnetic valves are changed into a three-way electromagnetic valve, so that the number of equipment is reduced, and the system structure is simplified.
The invention also provides a water purifier which comprises a fluid filtering device and a controller, wherein the controller can control the action of the pipeline switching device so as to realize the selection of a fluid conduction passage in the fluid filtering device. The water purifier is a reverse osmosis water purifier. The water purifier has three operation modes, namely a continuous water taking mode, an intermittent water taking mode and a shutdown restarting mode. The controller presets control signals corresponding to the three operation modes according to the water taking interval time, and controls the switching of the opening and closing states of the first electromagnetic valve 6 and the second electromagnetic valve 7 according to the control signals.
In the invention, the continuous water taking mode is an operation mode that the water taking time interval is less than 30 minutes; the intermittent water taking mode is an operation mode that the water taking interval is more than 30 minutes; the shutdown restarting mode is a mode of restarting to take water after power failure. The controller can switch the water purification waterway according to different operation modes, so that the service life of the resin filter element is effectively prolonged while the TDS of the previous cups of water is improved.
The invention also provides a method for reducing the TDS of the effluent by using the fluid filtering device, which comprises the following steps:
step A: starting the fluid filtering device, and controlling the fluid to enter the TDS filtering device by the pipeline switching device for filtering and then conveying when the entering fluid TDS is high in requirement for filtering;
and (B) step (B): when the TDS of the fluid entering the fluid inlet 15 of the fluid filtering device reaches the standard after the step A is operated for a set time, the pipeline switching device switches and controls the fluid to enter the purified water supply pipeline 13 for conveying;
step C: when the TDS of the entering fluid reaches the standard and filtration is not needed, the pipeline switching device controls the fluid to enter the purified water supply pipeline 13 for conveying.
The invention also provides a method for reducing the TDS of the water purifier outlet water, which comprises the following steps:
step A: the controller is preset with control signals corresponding to three operation modes of the water purifier;
and (B) step (B): starting the water purifier to perform water purification operation;
step C: the controller judges the running mode of the water purifier: the controller is used for receiving the working state signal of the booster pump 2 to judge the running mode; when the booster pump 2 stops working, signals are fed back to the controller, the controller starts timing, when the booster pump 2 is started next time and water is taken again, the controller judges the running mode of the water purifier according to the interval time, controls the pipeline switching device to act according to different preset control signals corresponding to different running modes to realize waterway change, and meanwhile the timing in the controller is cleared, and the timing is started again when the booster pump 2 stops next time;
step D: when the water purifier row mode is a continuous water taking mode: the water purifier produces water normally, the controller controls the second electromagnetic valve 7 to be closed, and the first electromagnetic valve 6 to be opened; at the moment, water flow sequentially passes through a pretreatment system 1-a booster pump 2-a reverse osmosis membrane filter element 3-a first electromagnetic valve 6-a rear filter element 10-a gooseneck faucet 11;
when the running mode of the water purifier is a discontinuous water taking mode or a stop restarting mode: the water purifier water outlet is purified by a TDS filter device, and the two steps of operation are divided into:
the first step: the controller controls the first electromagnetic valve 6 to be closed, the second electromagnetic valve 7 to be opened, and the water flow direction is the pretreatment system 1-the booster pump 2-the reverse osmosis membrane filter element 3-the second electromagnetic valve 7-the TDS filter device-the one-way valve 9-the rear filter element 10-the gooseneck faucet 11;
and a second step of: when the first step is operated for 30 seconds, the controller controls the first electromagnetic valve 6 to be opened, the second electromagnetic valve 7 to be closed, and the water flow direction is the same as the water flow direction when the water purifier is in normal water production.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A water purifier, characterized in that: the device comprises a fluid filtering device and a controller, wherein the controller can control the action of a pipeline switching device so as to realize the selection of a fluid conduction passage in the fluid filtering device;
the fluid filter device comprises a TDS filter device, a purified water supply pipeline (13) and a pipeline switching device, wherein: the TDS filter device is connected with a fluid inlet (15) of the fluid filter device through the pipeline switching device after being connected with inlet openings (14) of the purified water supply pipeline (13) in parallel, the TDS filter device is connected with a fluid outlet (17) of the fluid filter device after being connected with outlet openings (16) of the purified water supply pipeline (13) in parallel, and the pipeline switching device can select one inlet opening (14) of the TDS filter device and the purified water supply pipeline (13) to be communicated with the fluid inlet (15) of the fluid filter device; the TDS filter device is a mixed bed resin filter element (8);
the water purifier is provided with three operation modes, namely a continuous water taking mode, an intermittent water taking mode and a shutdown restarting mode, and the controller can judge the operation mode of the water purifier according to the interval time and control the pipeline switching device to act according to different preset control signals corresponding to different operation modes so as to realize waterway change;
when the running mode of the water purifier is a discontinuous water taking mode or a stop restarting mode, the water discharged by the water purifier is required to be purified by the TDS filter device;
when the water purifier running mode is a continuous water taking mode, the water purifier outlet water passes through a purified water supply pipeline (13).
2. The water purifier of claim 1, wherein: the pipeline switching device comprises a first electromagnetic valve (6) and a second electromagnetic valve (7) which are respectively arranged at the inlet (14) of the TDS filtering device and the inlet (14) of the purified water supply pipeline (13).
3. The water purifier of claim 1, wherein: the pipeline switching device comprises a three-way electromagnetic valve (12), and three connecting ports of the three-way electromagnetic valve (12) are respectively connected with a fluid inlet (15) of the fluid filtering device, the TDS filtering device and a flow inlet (14) of the purified water supply pipeline (13).
4. The water purifier of claim 2, wherein: a one-way valve (9) is arranged between the outflow opening (16) of the TDS filter device and the fluid outlet (17) of the fluid filter device, the one-way valve (9) allowing fluid to flow from the outflow opening (16) of the TDS filter device to the fluid outlet (17) of the fluid filter device.
5. The water purifier of claim 2, wherein: still including pretreatment systems (1), booster pump (2) and reverse osmosis membrane filter core (3) of connecting, the water purification export (18) of reverse osmosis membrane filter core (3) link to each other with fluid filter device's fluid inlet (15), pretreatment systems (1) pass through booster pump (2) with raw water entry (19) of reverse osmosis membrane filter core (3).
6. The water purifier of claim 5, wherein: the waste water outlet (20) of the reverse osmosis membrane filter element (3) is connected with a drainage pipeline provided with a concentrated water electromagnetic valve (5), and a waste water ratio electromagnetic valve (4) is connected beside the concentrated water electromagnetic valve (5).
7. The water purifier of claim 1, wherein: the filter further comprises a rear filter element (10), a liquid inlet (21) of the rear filter element (10) is connected with a fluid outlet (17) of the fluid filtering device, and a liquid outlet (22) of the rear filter element (10) is connected with downstream water equipment.
8. The water purifier of claim 1, wherein: the water purifier has three operation modes, namely a continuous water taking mode, an intermittent water taking mode and a shutdown restarting mode.
9. The water purifier of claim 8, wherein: the continuous water taking mode is an operation mode that the water taking time interval is less than 30 minutes; the intermittent water taking mode is an operation mode that the water taking interval is more than 30 minutes; the shutdown restarting mode is a mode of restarting water taking operation after power failure.
10. The water purifier of claim 1, wherein: the water purifier is a reverse osmosis water purifier.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833436.7A CN108821462B (en) | 2018-07-25 | 2018-07-25 | Fluid filtering device and water purifier |
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| CN201810833436.7A CN108821462B (en) | 2018-07-25 | 2018-07-25 | Fluid filtering device and water purifier |
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| CN205294919U (en) * | 2016-01-12 | 2016-06-08 | 江苏沁尔康环境电器有限公司 | Water purifier |
| CN206204052U (en) * | 2016-11-07 | 2017-05-31 | 深圳市安吉尔实业有限公司 | A kind of filter assemblies and ultrafiltration water softening device |
| CN106830201A (en) * | 2017-04-13 | 2017-06-13 | 莱克电气绿能科技(苏州)有限公司 | A kind of water purifier concentrated water automatic discharge system and water purifier |
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| CN108821462A (en) | 2018-11-16 |
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