CN216584532U - Water purification system and water purifier - Google Patents
Water purification system and water purifier Download PDFInfo
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- CN216584532U CN216584532U CN202123243909.4U CN202123243909U CN216584532U CN 216584532 U CN216584532 U CN 216584532U CN 202123243909 U CN202123243909 U CN 202123243909U CN 216584532 U CN216584532 U CN 216584532U
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- water
- filter element
- purification system
- water purification
- electromagnetic valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 219
- 238000000746 purification Methods 0.000 title claims abstract description 55
- 239000012528 membrane Substances 0.000 claims abstract description 67
- 239000000523 sample Substances 0.000 claims abstract description 37
- 230000005764 inhibitory process Effects 0.000 claims abstract description 34
- 230000002401 inhibitory effect Effects 0.000 claims description 10
- 238000011045 prefiltration Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 description 17
- 238000011010 flushing procedure Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009285 membrane fouling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a water purification system, which comprises a membrane filter element, wherein a TDS (total dissolved solids) probe and a scale inhibition filter element are arranged on a water inlet pipeline of the membrane filter element, the TDS probe is used for detecting a TDS value, and when the TDS value reaches a set value, the scale inhibition filter element is controlled to be opened so as to carry out pretreatment on water. The utility model also discloses a water purifier, which comprises the water purifying system. According to the water purification system and the water purifier provided by the utility model, the water quality is judged through the TDS measurement value, so that excessive stains are effectively prevented from being accumulated on the surface of the membrane filter element, and the service life of the membrane filter element of the water purifier is prolonged.
Description
Technical Field
The utility model belongs to the technical field of water purification system equipment, and particularly relates to a water purification system and a water purifier.
Background
With the promotion of national water efficiency water-saving grade, the design of water purifiers on the market develops towards the technical direction of high recovery rate and high water conservation. However, water quality is diversified all over the country, and a high-recovery-rate water purifier can achieve high recovery rate and long service life in areas with good water quality; however, in regions with poor water quality, the design of high recovery rate easily causes RO membrane fouling and waste water valve fouling, the service life of the filter element/the whole machine is shortened, and the reduction of the recovery rate of the water purifier correspondingly reduces the water efficiency grade, thus not conforming to the development trend of energy conservation and emission reduction at present.
Therefore, it is urgently needed to design a water purification system and a water purifier, and the problem that the water purification system and the water purifier with the same design and high recovery rate cannot adapt to the water quality of different water quality areas, and a filter element and a valve are easy to block in a poor water quality area, so that the service life of the whole water purification system is influenced is solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that the service life of the whole machine is affected because the membrane filter element is plugged and needs to be frequently replaced in the background art, a water purification system and a water purifier are provided to solve the problem.
In order to achieve the purpose, the specific technical scheme of the water purification system and the water purifier is as follows:
the utility model provides a water purification system, includes the membrane filter core, is provided with the TDS probe on the water inlet pipe of membrane filter core and hinders dirty filter core, and the TDS probe is used for detecting the TDS value, and when the TDS value reached the setting value, the control was hindered dirty the filter core and is opened to carry out the preliminary treatment to water.
Further, the upstream of the scale inhibition filter element is provided with a first electromagnetic valve which is electrically connected with a controller, and the controller enables the scale inhibition filter element to be opened or closed by controlling the first electromagnetic valve.
And the controller controls the second electromagnetic valve to open or close the membrane filter element.
Further, a first electromagnetic valve and the scale inhibition filter core are arranged in series, and the first electromagnetic valve, the scale inhibition filter core and a second electromagnetic valve on the water inlet pipeline are arranged in parallel.
Further, still be provided with the inverter pump on the inlet line, the inverter pump is used for stabilizing the velocity of water flow.
Furthermore, still be provided with temperature probe on the water inlet pipe, temperature probe is used for the temperature of detection water, and when the value that temperature probe detected reached the setting value, the control inverter pump increased the pumping pressure to stabilize the velocity of water.
Further, the temperature probe is arranged at the upstream of the scale inhibition filter element, and the variable frequency pump is arranged at the downstream of the scale inhibition filter element.
Further, still include leading filter core, leading filter core sets up in the upper reaches of hindering dirty filter core, and leading filter core is used for carrying out the prefiltration to water.
And the water purifier further comprises a rear filter element, the rear filter element is arranged on the water outlet pipeline of the membrane filter element, and the rear filter element is used for filtering water again.
A water purifier comprises the water purification system.
The water purification system and the water purifier have the following advantages:
the water quality is judged through the TDS measured value, and in areas with better water quality, the scale inhibition filter element is not opened during normal water production; in areas with poor water quality, the scale inhibition filter element is opened, raw water passes through the scale inhibition filter element, dirt is not easy to form under the action of a scale inhibitor, excessive dirt accumulated on the surface of the membrane filter element is effectively prevented, and the service life of the membrane filter element of the water purification system is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a water purification system of the present invention.
The notation in the figure is:
1. a membrane cartridge; 2. a water inlet pipeline; 21. a main branch; 22. a branch circuit; 3. a water outlet pipeline; 4. a waste water line; 5. a TDS probe; 6. a temperature probe; 7. a scale inhibition filter element; 8. a second solenoid valve; 9. a first solenoid valve; 10. a third electromagnetic valve; 11. a front filter element; 12. a post-positioned filter element; 13. a WiFi module; 14. a fourth solenoid valve; 15. a variable frequency pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical features mentioned in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.
The following describes a water purification system and a water purifier according to the present invention with reference to fig. 1.
The water purification system mainly has a water production mode and a flushing mode. Be provided with membrane filter core 1 on water purification system, membrane filter core 1 connects water inlet, delivery port and waste water mouth, and membrane filter core 1 and water inlet pass through inlet channel 2 and connect, and membrane filter core 1 and delivery port pass through outlet pipe way 3 and connect, and membrane filter core 1 and waste water mouth pass through waste water pipeline 4 and connect. Be provided with leading filter core 11 on water intake pipe 2, be provided with rearmounted filter core 12 on outlet pipe way 3, membrane filter core 1 is arranged in between leading filter core 11 and rearmounted filter core 12, and the raw water passes through the water inlet and gets into, and earlier behind leading filter core 11, through membrane filter core 1 and rearmounted filter core 12, through delivery port discharge confession user's use, wherein when passing through membrane filter core 1, a part waste water that produces passes through waste water pipeline 4, from the waste water mouth discharge. In this embodiment, the front filter element 11 is a first-stage water treatment device of the water purification system, and includes but is not limited to a PP cotton filter element, a carbon rod, an ultrafiltration membrane filter element and a ceramic filter element, and is used for filtering large particulate matters in water, removing residual chlorine, etc., and the rear filter element 12 includes but is not limited to a rear carbon rod, an ultrafiltration membrane, etc., and is used for filtering impurities remaining after the water is discharged from the membrane filter element 1, and improving the taste.
The water inlet is provided with a third electromagnetic valve 10, the third electromagnetic valve 10 is used for controlling water inlet in the water inlet pipeline 2, the waste water inlet is provided with a fourth electromagnetic valve 14, the fourth electromagnetic valve 14 is a waste water electromagnetic valve, the flow of the waste water valve is adjusted by controlling the opening and closing of the valve core, the valve core is closed when the water purification system is in a water production state, the electromagnetic valve controls the pure waste water ratio by limiting the flow of small holes, when the water purification system is in a flushing mode, the valve core of the fourth electromagnetic valve 14 is opened, the flow channel is enlarged at the moment, and the flushed waste water is conveniently and rapidly discharged.
When the water purification system carries out the water production mode and the flushing mode under the conditions, the same water purification system has high yield and long service life in areas with good water quality due to the difference of regional water quality and the difference of temperature; in areas with poor water quality, the water purification system is easy to generate membrane fouling and electromagnetic valve fouling, so that the service life of the membrane filter element 1 is shortened. In addition, seasonal changes can lead to temperature changes, and in some regions, the membrane flux of the membrane filter element 1 can be reduced under the condition of low winter temperature, so that the speed of water produced by the water purification system is different, and the user experience is influenced.
Therefore, in order to satisfy the requirements of high recovery rate and long service life of the water purification system under the water quality conditions of different regions and ensure the membrane flux of the membrane filter element 1 of the water purification system at different temperatures, the water purification system needs to be further designed and modified. Design TDS probe 5 and temperature probe 6 on water purification system, be used for detecting the change of TDS value change and the change of temperature respectively to the information transmission who will collect through wiFi module 13 reaches the database of high in the clouds, through the analysis to this place quality of water data, opening or closing of antisludging filter core 7 of control setting on water purification system, further filter the raw water, prevent effectively that membrane filter core 1 from being blockked, guarantee high rate of recovery and long life-span of water purification system. In this embodiment, the scale inhibition filter element 7 is used for preventing calcium and magnesium ions in water from forming crystals to cause the pollution blockage of the membrane, and the membrane filter element 1 can filter most of impurities in the water.
As shown in fig. 1, in the water purification system and the water purifier of the present invention, a TDS probe 5 and a temperature probe 6 are provided in the water purification system, and are respectively used for detecting changes in TDS value and changes in water temperature, the value measured by the TDS probe 5 is transmitted to a cloud database through a WiFi module 13, the database judges whether to start a scale inhibition filter element 7 provided in the water purification system or not by combining the local water quality condition of the year, in an area with poor water quality, the scale inhibition filter element 7 is started, raw water is changed into water which is not easy to crystallize after passing through the scale inhibition filter element 7, excessive stain accumulation on the surface of the membrane filter element 1 is prevented, and the service life of the whole filter element is prolonged. In areas with good water quality, the scale inhibition filter element 7 is not opened during normal water production, and the scale inhibition filter element 7 is only opened in a flushing mode. Open under the washing mode and hinder dirty filter core 7, guarantee that the water of the dense water side of membrane filter core 1 is soft water, make membrane filter core 1 difficult by the plug of dirt, prolong water purification system membrane filter core 1's life.
The WiFi module 13 is fed back to the value that temperature probe 6 measured, transmits the high in the clouds database through WiFi module 13, and the controller is given back to the information in the database, and the controller combines frequency conversion pump 15 that sets up on water purification system, and under different temperatures, the controller is through adjusting frequency conversion pump 15's rotation power, reaches under the different temperatures, the stable effect of water purification system play water speed. In this embodiment, the variable frequency pump 15 is located before the membrane filter core 1 and is used for pressurizing the membrane filter core 1 to realize the filtering function, and the variable frequency pump 15 can change the operating power according to the system control, reaches different pump pressures, realizes different operation demands.
Further, as shown in fig. 1, a TDS probe 5 and a temperature probe 6 are arranged on the water inlet pipeline 2, the TDS probe 5 and the temperature probe 6 are both arranged between a third electromagnetic valve 10 and a pre-filter element 11, the TDS probe 5 is used for measuring a TDS value in water quality, the temperature probe 6 is used for measuring water temperature, a scale inhibiting filter element 7 is further arranged on the water inlet pipeline 2, specifically, the water inlet pipeline 2 comprises a main branch 21 and a branch 22, the branch 22 is arranged between the pre-filter element 11 and the membrane filter element 1, the scale inhibiting filter element 7 is arranged on the branch 22, a first electromagnetic valve 9 is further arranged on the branch 22, the first electromagnetic valve 9 is used for opening or closing the scale inhibiting filter element 7, a second electromagnetic valve 8 is arranged on the main branch 21 which is connected with the first electromagnetic valve 9 and the scale inhibiting filter element 7 in parallel, the second electromagnetic valve 8 is used for controlling the on-off of water between the pre-filter element 11 and the membrane filter element 1, a variable frequency pump 15 is further arranged on the main branch 21, variable frequency pump 15 is arranged in between second solenoid valve 8 and membrane filter core 1, and variable frequency pump 15 surveys information according to TDS probe 5 and temperature probe 6, and the running power of adjustable pump realizes different system demands.
Specifically, when the water purification system is in a water production mode, the second electromagnetic valve 8, the third electromagnetic valve 10 and the fourth electromagnetic valve 14 are opened, the first electromagnetic valve 9 is closed, the raw water passes through the front filter element 11, the membrane filter element 1 and the rear filter element 12 to obtain pure water, and the pure water is discharged from the water outlet. TDS probe 5 and temperature probe 6 begin to collect data information, and data information who will collect sends WIFI module 13 to, WiFi module 13 is mutual with the database, specifically be according to the time, the place and the quality of water condition in this place of the past year, like annual average TDS value, turbidity and hardness isoparametric, classify the quality of water condition in this area, divide into the relatively poor area of quality of water, the better area of common area and quality of water, and then judge whether open anti-scaling filter core 7, through transmitting the quality of water condition to the controller, open or close anti-scaling filter core 7 through opening or closing of controller control solenoid valve.
In areas with poor water quality, the scale inhibition filter element 7 of the water purifier is normally open in the process of water production, when the scale inhibition filter element 7 is opened, the second electromagnetic valve 8 is closed, the first electromagnetic valve 9, the third electromagnetic valve 10 and the fourth electromagnetic valve 14 are opened, raw water sequentially passes through the preposed filter element 11, the scale inhibition filter element 7, the membrane filter element 1 and the postposition filter element 12 to prepare pure water, and the pure water is discharged from a water outlet. When the TDS probe 5 is connected and tested for a period of time, collected data are more than three times, if the measured TDS value is less than a first set value, the water quality condition in the area can be judged to be improved, the scale inhibition filter element 7 can be closed, the first electromagnetic valve 9 is closed, the second electromagnetic valve 8, the third electromagnetic valve 10 and the fourth electromagnetic valve 14 are opened, and raw water passes through the preposed filter element 11, the membrane filter element 1 and the postposition filter element 12 to obtain pure water which is discharged from a water outlet; if the measured TDS value is larger than or equal to the first set value, the water quality condition of the area can be judged to be poor, the scale inhibition filter element 7 is kept to be normally open, the first electromagnetic valve 9, the third electromagnetic valve 10 and the fourth electromagnetic valve 14 are opened, the second electromagnetic valve 8 is closed, the raw water sequentially passes through the preposed filter element 11, the scale inhibition filter element 7, the membrane filter element 1 and the postposition filter element 12 to prepare pure water, and the pure water is discharged from a water outlet.
In the ordinary areas and the areas with better water quality, the scale inhibition filter element 7 is normally closed, the second electromagnetic valve 8, the third electromagnetic valve 10 and the fourth electromagnetic valve 14 are opened, the first electromagnetic valve 9 is closed, the raw water passes through the preposed filter element 11, the membrane filter element 1 and the postposition filter element 12 to produce pure water, and the pure water is discharged from the water outlet. When the TDS probe 5 is tested for a period of time continuously and collected data is more than three times, if the measured TDS value is less than a second set value, the water quality condition in the area can be judged to be still good, the scale inhibition filter element 7 is continuously closed at the moment, the first electromagnetic valve 9 is closed, the second electromagnetic valve 8, the third electromagnetic valve 10 and the fourth electromagnetic valve 14 are opened, and raw water passes through the preposed filter element 11, the membrane filter element 1 and the postposition filter element 12 to obtain pure water which is discharged from a water outlet; if the measured TDS value is larger than or equal to a second set value, the water quality condition in the area can be judged to be poor, the scale inhibition filter element 7 is kept normally open at the moment, the first electromagnetic valve 9 is opened, the second electromagnetic valve 8 is closed, the raw water sequentially passes through the preposed filter element 11, the scale inhibition filter element 7, the membrane filter element 1 and the postposition filter element 12 to prepare pure water, and the pure water is discharged from a water outlet.
In the water-making mode of the water purification system, if the scale-inhibiting filter element 7 is not started to make water, after the water-making of the water purification system is finished each time, the water purification system automatically enters a low-frequency flushing mode, the variable-frequency pump 15 is switched to the low-frequency mode for continuous operation for 15 seconds after a user finishes taking water, and at the moment, the first electromagnetic valve 9 and the third electromagnetic valve 10 are opened, the second electromagnetic valve 8 and the fourth electromagnetic valve 14 are closed, raw water enters from the water inlet, sequentially passes through the preposed filter element 11 and the scale inhibition filter element 7 to reach the concentrated water side of the membrane filter element 1, the concentrated water at the concentrated water side of the membrane filter element 1 is slowly discharged from the small hole of the fourth electromagnetic valve 14, because the fourth electromagnetic valve 14 is not opened, the variable frequency pump 15 runs at low frequency, and the low-frequency flushing flow is very small at the moment, raw water passes through the scale inhibition filter element 7 to replace concentrated water on the concentrated water side of the membrane filter element 1, so that the water on the concentrated water side is not easy to crystallize to cause the blockage of the membrane filter element 1.
After the water purification system uses a period of time, the water purification system enters a normal flushing mode, the purpose of entering the flushing mode is to flush out the concentrated water of the membrane filter element 1, the concentrated water of the membrane filter element 1 is replaced by the water which is not easy to scale, therefore, when in the flushing mode, in order to prevent the membrane filter element 1 from being blocked by the dirt, the scale inhibiting filter element 7 also needs to be opened, the flushing water is filtered, at the moment, the first electromagnetic valve 9, the third electromagnetic valve 10 and the fourth electromagnetic valve 14 are opened, the second electromagnetic valve 8 is closed, the flushing water enters from the water inlet, the flushing water sequentially passes through the preposed filter element 11 and the scale inhibiting filter element 7 and then reaches the concentrated water side of the membrane filter element 1, the concentrated water on the concentrated water side of the membrane filter element 1 is flushed out, the concentrated water of the membrane filter element 1 is replaced by the water which is not easy to scale, and the membrane filter element 1 is prevented from being blocked. The fourth electromagnetic valve 14 is opened to change the waste water pipeline 4 into a large-hole conduction, and the flushed waste water is discharged from the waste water port through the waste water pipeline 4.
Influenced by the temperature, winter under the lower condition of temperature, the membrane flux of membrane filter core 1 can reduce, and temperature probe 6 is used for detecting the temperature, adjusts variable frequency pump 15's transport power under the temperature of difference, can be again under the temperature of difference, and membrane filter core 1 reaches the velocity of flow of stable play water. When the temperature value measured by the temperature probe 6 is less than a third set value, the variable frequency pump 15 is switched to a high power mode, and the pump pressure is increased to stabilize the water yield of the membrane filter element 1 at a low temperature; when the temperature value measured by the temperature probe 6 is larger than or equal to the third set value, the variable frequency pump 15 operates at normal power.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The utility model provides a water purification system, its characterized in that, includes the membrane filter core, is provided with the TDS probe on the water inlet pipe of membrane filter core and hinders dirty filter core, and the TDS probe is used for detecting the TDS value, and when the TDS value reached the setting value, the control was hindered dirty the filter core and is opened to carry out the preliminary treatment to water.
2. The water purification system of claim 1, wherein a first electromagnetic valve is arranged upstream of the scale inhibition filter element, the first electromagnetic valve is electrically connected with a controller, and the controller controls the first electromagnetic valve to open or close the scale inhibition filter element.
3. The water purification system of claim 2, further comprising a second solenoid valve disposed upstream of the membrane cartridge, the second solenoid valve being electrically connected to the controller, the controller causing the membrane cartridge to open or close by controlling the second solenoid valve.
4. The water purification system of claim 3, wherein the first solenoid valve is connected in series with the scale inhibiting filter element, and the first solenoid valve, the scale inhibiting filter element and the second solenoid valve on the water inlet pipeline are connected in parallel.
5. The water purification system of claim 1, wherein a variable frequency pump is further disposed on the water inlet pipeline, and the variable frequency pump is used for stabilizing the water flow speed.
6. The water purification system of claim 1, wherein a temperature probe is further disposed on the water inlet pipeline, the temperature probe is used for detecting the temperature of the water, and when the value detected by the temperature probe reaches a set value, the variable frequency pump is controlled to increase the pump pressure so as to stabilize the water flow speed.
7. The water purification system of claim 6, wherein the temperature probe is disposed upstream of the scale inhibition filter element and the variable frequency pump is disposed downstream of the scale inhibition filter element.
8. The water purification system of claim 1, further comprising a pre-filter element disposed upstream of the scale inhibiting filter element, the pre-filter element being configured to perform a preliminary filtration of water.
9. The water purification system of claim 1, further comprising a post-filter element disposed on the water outlet pipeline of the membrane filter element, the post-filter element being configured to re-filter the water.
10. A water purification machine comprising a water purification system as claimed in any one of claims 1 to 9.
Priority Applications (1)
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CN202123243909.4U CN216584532U (en) | 2021-12-22 | 2021-12-22 | Water purification system and water purifier |
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CN202123243909.4U CN216584532U (en) | 2021-12-22 | 2021-12-22 | Water purification system and water purifier |
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