CN207748987U - A kind of water filtering system - Google Patents

A kind of water filtering system Download PDF

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Publication number
CN207748987U
CN207748987U CN201721907403.XU CN201721907403U CN207748987U CN 207748987 U CN207748987 U CN 207748987U CN 201721907403 U CN201721907403 U CN 201721907403U CN 207748987 U CN207748987 U CN 207748987U
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electric field
water
positive plate
filtering system
separation
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CN201721907403.XU
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陈建华
王行飞
刘红星
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Abstract

Include the preceding filter device positioned at front end the utility model is related to a kind of water filtering system, it is characterised in that:Further include the separation of heavy metal ions device being arranged at preceding filter device rear, which includes separating flow tract, attached collection electric field positive plate, attached collection electric field negative plate, separation electric field positive plate, separation electric field negative plate;The outlet of separating flow tract is equipped with N blocks and detaches the split-flow baffles of electric field positive plate parallel interval setting;The water of subexit outflow is shunted as the waste water of water filtering system using positioned at a most intermediate shunting subexit or positioned at any of most intermediate two shuntings subexit.Compared with prior art, the utility model has the advantage of:By the way that separation of heavy metal ions device is arranged, cation more different than lotus in water is subjected to separation shunting, further according to heavy metal ion than lotus, the water for containing heavy metal ion is forced to exclude as the waste water of water filtering system, can effectively cross the heavy metal ion in drainage.

Description

A kind of water filtering system
Technical field
The present invention relates to a kind of water filtering systems.
Background technology
The water process mode of water purifier is mainly to be handled by the form of film at present, and a kind of film relies on the mode of filtering Pollutant is retained, such as PP cottons, activated carbon, another film is shunted after filtering, such as reverse osmosis, ultrafiltration, a part of mistake Water after filter is discharged as purified water, and another part is just discharged with pollutant as waste water.Water purifier is typically all The process of entire Water warfare is completed by dividing multistage filtering.Main core filter membrane is divided into ultrafiltration, reverse osmosis currently on the market Both saturating films.Ultrafiltration membrane can retain the minerals in water but cannot cross the heavy metal ion in drainage, and reverse osmosis membrane can be with The ion of the overwhelming majority is filtered out, but does not have mineral ion, is become or close to pure water.There is part using nanofiltration, protects Certain mineral ion is stayed, but most of heavy metal ion can be filtered out.But either any film all has following several A common characteristic:
1, the effect filtered is fixed, i.e. the aperture of film determines the filter effect of film, and film is once molded, also just solid The aperture for having determined filtering, does not adapt to different occasions;
2, the filter effect of film becomes low with film usage time president, efficiency, and aperture becomes smaller, with usage time plus It is long, it can may also block, finally be also possible to that film is caused to fail, need replacing film;
3, film is by micro porous filtration, and micropore can form certain water resistance, and aperture is smaller, water resistance is bigger, it is however generally that, Reverse osmosis membrane can filter whole ions, form pure water, aperture is minimum, thus water resistance is also maximum, and reverse osmosis water purifier is general It is required for booster pump to be pressurized water inlet, just can guarantee certain water yield.
Invention content
The technical problem to be solved by the present invention is to provide a kind of huge sum of money that can will contain in water for the above-mentioned prior art Belong to ion and carries out the water filtering system for forcing separation to exclude.
Technical solution is used by the present invention solves above-mentioned technical problem:A kind of water filtering system, including it is located at front end Preceding filter device, it is characterised in that:Further include the separation of heavy metal ions device being arranged at preceding filter device rear, the huge sum of money Belonging to ion fractionation device includes
Separating flow tract, separating flow tract include entrance and exit;
Attached collection electric field positive plate is arranged in separating flow tract, close to the entrance of separating flow tract, with the first external stabilized power Anode electrical connection;
Attached collection electric field negative plate is arranged in separating flow tract, close to the entrance of separating flow tract, with the first external stabilized power Cathode electrical connection, and be arranged with attached collection electric field positive plate face and parallel interval, attached collection electric field positive plate and attached collection electric field are born The distance between pole piece is d;
Electric field positive plate is detached, is arranged in separating flow tract, close to the outlet of separating flow tract, is existed with attached collection electric field negative plate It on same straight line, is connect with the anode of the second external stabilized power, and there is D between the rear end of attached collection electric field negative plate Spacing, D are more than 0;First external stabilized power is pulsed voltage of voltage regulation.
Electric field negative plate is detached, is arranged in separating flow tract, close to the outlet of separating flow tract, is existed with attached collection electric field positive plate It on same straight line, is connect with the cathode of the second external stabilized power, and there is D between the rear end of attached collection electric field positive plate Spacing, D are more than 0;
The outlet of separating flow tract is equipped with N blocks and detaches the split-flow baffles of electric field positive plate parallel interval setting, to divide Outlet from runner is divided into N+1 shunting subexit, and the value of N is the natural number more than or equal to 2;
It will be positioned at a most intermediate shunting subexit or positioned at any of most intermediate two shuntings subexit shunting Export waste water of the water of outflow as water filtering system;The water flowed out from remaining shunting subexit is mixed, as water mistake The normal water outlet of filter system.
The distance between N block split-flow baffles can be identical, i.e., the outlet of separating flow tract is divided into N+1 by N blocks split-flow baffles The identical shunting subexit of size.
The distance between N block split-flow baffles can also be different, preferably, the N=2, wherein first piece of split-flow baffles It is with the distance between electric field positive plate is detached:Wherein K is less than 1 more than 0 Constant, voltages of the U between the second external stabilized power positive and negative anodes, l are separation electric field positive plate or separation electric field negative plate Length, v are the water velocity that water flows through separating flow tract, and d is the distance between separation electric field positive plate and separation electric field negative plate;Ranging from 1/15~1/8;
Second piece of split-flow baffles be with the distance between electric field positive plate is detached: Ranging from 1/45~1/40;The shunting subexit that will be formed between first piece of split-flow baffles and second piece of split-flow baffles Waste water of the water of outflow as water filtering system;The water flowed out from other two shunting subexit is mixed, as water mistake The normal water outlet of filter system;In this way, if existing than lotus containing silver ion, cadmium ion, barium ions, mercury ion, lead ion etc. in water Metal cation between 1/15~1/8 to 1/45~1/40 will directly be forced to exclude as the waste water of water filtering system.
As another preferred embodiment, the N=3, wherein first piece of split-flow baffles with detach the distance between electric field positive plate For:Wherein K be less than 1 be more than 0 constant, U be the second external stabilized power just Voltage between cathode, l are the length for detaching electric field positive plate or detaching electric field negative plate, and v is the water that water flows through separating flow tract Flow velocity degree, d are the distance between separation electric field positive plate and separation electric field negative plate;Ranging from 1/15~1/8;Second Block split-flow baffles are with the distance between electric field positive plate is detached: Range It is 1/28~1/20;Third block split-flow baffles are with the distance between electric field positive plate is detached: Ranging from:1/45~1/40, the shunting subexit that will be formed between second piece of split-flow baffles and third block split-flow baffles Waste water of the water of outflow as water filtering system;The water flowed out from its excess-three shunting subexit is mixed, as water mistake The normal water outlet of filter system, in this way, the metal sun than lotus between 1/28~1/20 to 1/45~1/40 such as mercury ion, lead ion Ion will directly be forced to exclude as the waste water of water filtering system.
For effectively attached collection and it is released effectively ion, in the pulsed voltage of voltage regulation of first external stabilized power, is added The pressure time, which is less than, is not pressurized the time, i.e., the duty ratio of pulsed voltage of voltage regulation is less than 50%.
In view of attached collection electric field and detach electric field voltage it is excessive when, the electrolysis of water is easy to cause, in order not to as making water Electrolysis, for first external stabilized power in pressurization, the voltage between positive and negative anodes is less than or equal to 2V;Second external stabilized power Voltage between positive and negative anodes is less than or equal to 2V.
Preferably, separation electric field cathode leaf length it is identical as electric field anode leaf length is detached, D with detach electric field negative plate Length is identical.
It improves again, the entrance of the separating flow tract is arranged before attached collection electric field positive plate front end and attached collection electric field negative plate The entrance of the separating flow tract is formed between end or attached collection electric field positive plate front end and attached collection electric field negative plate front end; The outlet of the separating flow tract is formed between separation electric field positive plate rear end and separation electric field negative plate rear end.
It improves again, the preceding filter device includes the by-pass filtration unit that filter core is PP cottons, and filter core is the two level of activated carbon Filter element and the three-stage filtration unit that filter core is ultrafiltration membrane;The water inlet of the entrance and water filtering system of by-pass filtration unit Mouth connection, the outlet of by-pass filtration unit are connected to the entrance of secondary filtration unit, outlet and the three-level mistake of secondary filtration unit The entrance connection of unit is filtered, the outlet of three-stage filtration unit is connected to the entrance of separating flow tract in separation of heavy metal ions device.
It improves, is equipped between the entrance of separating flow tract in the outlet of three-stage filtration unit and separation of heavy metal ions device again Flowmeter.
Compared with the prior art, the advantages of the present invention are as follows:By the way that separation of heavy metal ions device is arranged, lotus will be compared in water Different cations carries out separation shunting, and further according to heavy metal ion than lotus, the water for containing heavy metal ion is filtered as water The waste water of system is forced to exclude, and can effectively cross the heavy metal ion in drainage.
Description of the drawings
Fig. 1 is the schematic diagram of water filtering system in the embodiment of the present invention one.
Fig. 2 is the schematic diagram of separation of heavy metal ions device in the embodiment of the present invention one.
Fig. 3 is the schematic diagram of separation of heavy metal ions device in the embodiment of the present invention two.
Fig. 4 is the schematic diagram of separation of heavy metal ions device in the embodiment of the present invention three.
Specific implementation mode
Below in conjunction with attached drawing embodiment, present invention is further described in detail.
Water filtering system as shown in Figure 1 includes the preceding filter device positioned at front end, and is arranged at preceding filter device rear Separation of heavy metal ions device.The preceding filter device includes the by-pass filtration unit 7 that filter core is PP cottons, and filter core is activated carbon Secondary filtration unit 8 and filter core be ultrafiltration membrane three-stage filtration unit 9;The entrance of by-pass filtration unit and water filtering system The water inlet of system is connected to, and the outlet of by-pass filtration unit is connected to the entrance of secondary filtration unit, the outlet of secondary filtration unit It is connected to the entrance of three-stage filtration unit, the outlet of three-stage filtration unit enters with separating flow tract in separation of heavy metal ions device Mouth connection;Flowmeter is equipped in the outlet of three-stage filtration unit and separation of heavy metal ions device between the entrance of separating flow tract 10。
In the present embodiment, separation of heavy metal ions device includes, shown in Figure 2,
Separating flow tract 1, separating flow tract include entrance and exit;
Attached collection electric field positive plate 2 is arranged in separating flow tract, close to the entrance of separating flow tract, with the first outside voltage stabilizing electricity The anode electrical connection in source;
Attached collection electric field negative plate 3 is arranged in separating flow tract, close to the entrance of separating flow tract, with the first outside voltage stabilizing electricity The cathode in source is electrically connected, and with attached collection electric field positive plate face and parallel interval setting, attached collection electric field positive plate and attached collection electric field The distance between negative plate is d;First external stabilized power is pulsed voltage of voltage regulation;
Electric field positive plate 4 is detached, is arranged in separating flow tract, close to the outlet of separating flow tract, with attached collection electric field negative plate On the same line, it is connect with the anode of the second external stabilized power, and there is D between the rear end of attached collection electric field negative plate Spacing, D are more than 0;
Electric field negative plate 5 is detached, is arranged in separating flow tract, close to the outlet of separating flow tract, with attached collection electric field positive plate On the same line, it is connect with the cathode of the second external stabilized power, and there is D between the rear end of attached collection electric field positive plate Spacing, D are more than 0;
The outlet of separating flow tract is equipped with the split-flow baffles 6 of N blocks uniform intervals setting parallel with electric field negative plate 5 is detached, from And the outlet of separating flow tract is divided into the identical shunting subexit of N+1 amount of capacity, the value of N is the nature more than or equal to 2 Number;It will be positioned at a most intermediate shunting subexit or positioned at any of most intermediate two shuntings subexit shunting subexit stream Waste water of the water gone out as water filtering system;The water flowed out from remaining shunting subexit is mixed, as water filtering system Normal water outlet.
In the present embodiment, N=3 will extremely detach the split-flow baffles between electric field positive plate from separation electric field negative plate successively First piece of split-flow baffles, second piece of split-flow baffles, third block split-flow baffles are denoted as, it will be from second piece of split-flow baffles and third block point Waste water of the water of the shunting subexit outflow formed between stream partition board as water filtering system, forces to exclude;It will be from remaining shunting The water of subexit outflow is mixed, the normal water outlet as water filtering system.
The operation principle of separation of heavy metal ions device is:
Water enters from the entrance of separating flow tract, and under the action of attached collection electric field, the attached collection of cation in water is in attached collection electric field Near negative plate, the attached collection of anion in water is near attached collection electric field positive plate;Attached collection electric field uses impulse type voltage, making alive When, attached collection is carried out to the ion in water, allows attached collection in the attached negative and positive collected near electric field positive/negative plate (when power-off) when being not added with voltage Enter the separation electric field of subsequent ion after plasma diffusing W,Mo;As long as the intensity of attached collection electric field, burst length, the spacing of pole piece, flow Speed is matched, and the attached collection of separation of progress zwitterion that can be effective reaches the initial position one of all charged ions It causes (cation is near negative plate);Since different ions has different charges and different atomic weight, in normal water Most of main cation is calcium (Ca2+ atomic weight be 20), magnesium (Mg2+ ion atoms amount be 20), sodium (Na+ atomic weight For 11), also some other micro cation;But in the water of some pollutions, especially in the water of heavy metal pollution, wrapping A large amount of heavy metal ion is contained, such as lead (Pb2+ atomic weight be 82), mercury (Hg2+ atomic weight be 80), silver (Ag2+ atomic weight For 47), barium (Ba2+ atomic weight be 56), cadmium (Cd2+ atomic weight 48) etc. be.Different ions has different ratio lotuses, such as calcium Ion ratio lotus is 2/20, cadmium ion 2/48, lead ion 2/82, therefore the ratio lotus of heavy metal ion is relatively small, especially Lead, mercury etc., and cationic such as calcium and magnesium sodium common in general water compare than lotus it is larger.In identical separation electric field, phase In the case of initial velocity, the distance relation of the ion of not year-on-year lotus movement and the distance than proportional relationship, that is, moved than lotus and Q/m is related, and under phase same electric field, the ion movement speed smaller than lotus is slow, as long as ensuring the heavy metal cation smaller than lotus attached collection Near pole piece, it is ensured that bigger than lotus as calcium ions and magnesium ions also completely attached collection achieve the effect that complete attached collection on positive plate; Consider effectively attached collection and is released effectively the factor of ion, the time (the attached collection of making alive) of the attached collection of pulsed power supplies<Release time is (no Making alive);Consider that too high voltages are easy to cause the electrolysis of water, therefore pays the utmost attention to the attached collection voltage of electric field and separation electric field of input Voltage cannot be excessive, should be typically lower than 2V or less.
Identical electric field is different different Ion transfer abilities, is mainly determined according to different charged ratios, Under identical uniform electric field, ion enters separation electric field under the drive of flow, due to the effect of attached collection electric field before so that Cation is all near attached collection electric field negative plate so that cationic primary condition is consistent, under the action of detaching electric field, in water Different ions can be migrated under the action of detaching electric field, anion is moved to separation electric field positive plate, and cation can be to The movement of electric field negative plate is detached, but due to different ratio lotuses, the offset distance of different ions also differs.Calcium ions and magnesium ions exist in water It being reached near ion isolation electric field negative plate when near water outlet, for heavy metal ion due to smaller than lotus, movement speed is slow, because This heavy metal ion has also been in elsewhere, by the diversion channel of water outlet, is shunted to water, so as to in water not Same zwitterion is detached, by going out shunting formed between second piece of split-flow baffles and third block split-flow baffles The water of mouth outflow is as water filtering system waste water;The water flowed out from its excess-three shunting subexit is mixed, as water mistake The normal water outlet of filter system, so that it may to exclude most of heavy metal ion.Attached collection electric field is to ion isolation electric field in order to prevent Influence, 2 electric fields need a certain distance, that is, detach the front end of the electric field positive plate not rear end with attached collection electric field negative plate Between have D spacing, D be more than 0, separation electric field cathode leaf length it is identical as electric field anode leaf length is detached, D preferably with detach electricity Field cathode leaf length is identical.
Embodiment two
What is different from the first embodiment is that three pieces of split-flow baffles are not evenly spaced on, it is shown in Figure 3, wherein
First piece of split-flow baffles be with the distance between electric field positive plate is detached:Its Middle K be less than 1 be more than 0 constant, voltages of the U for the second external stabilized power positive and negative anodes between, l be detach electric field positive plate or The length of electric field negative plate is detached, v is the water velocity that water flows through separating flow tract, and d is separation electric field positive plate and separation electric field The distance between negative plate;Ranging from 1/15~1/8;In this way, calcium ion, sodium ion etc. than lotus 0 to 1/15~1/8 Between metal cation can be formed between first piece of split-flow baffles and separating flow tract inner wall shunting subexit outflow;
Second piece of split-flow baffles be with the distance between electric field positive plate is detached: Ranging from 1/28~1/2;In this way, the metal sun than lotus between 1/15~1/8 to 1/28~1/20 such as silver ion, cadmium ion The shunting subexit outflow that ion can be formed between first piece of split-flow baffles and second piece of split-flow baffles;
Third block split-flow baffles are with the distance between electric field positive plate is detached: Ranging from:1/45~1/40;In this way, barium ions, lead ion, mercury ion etc. than lotus 1/28~1/20 to 1/45~1/40 it Between metal cation can be formed between second piece of split-flow baffles and third block split-flow baffles shunting subexit outflow.
At this point, the water of the shunting subexit outflow formed between second piece of split-flow baffles and third block split-flow baffles is made It, can be more accurate so effective that exclude the heavy metal ion contained in water for the waste water of water filtering system.
Embodiment three
Unlike embodiment two, split-flow baffles are shown in Figure 4 equipped with two pieces, wherein:
First piece of split-flow baffles be with the distance between electric field positive plate is detached:Its Middle K be less than 1 be more than 0 constant, voltages of the U for the second external stabilized power positive and negative anodes between, l be detach electric field positive plate or The length of electric field negative plate is detached, v is the water velocity that water flows through separating flow tract, and d is separation electric field positive plate and separation electric field The distance between negative plate;Ranging from 1/15~1/8;
Second piece of split-flow baffles be with the distance between electric field positive plate is detached: Ranging from 1/45~1/40.
At this point, by the water mistake of the shunting subexit outflow formed between first piece of split-flow baffles and second piece of split-flow baffles The waste water of filter system, also can be more accurate so effective that exclude the heavy metal ion contained in water.

Claims (9)

1. a kind of water filtering system includes the preceding filter device positioned at front end, it is characterised in that:Further include that setting is filled in preceding filtering The separation of heavy metal ions device for the side of postponing, the separation of heavy metal ions device include
Separating flow tract, separating flow tract include entrance and exit;
Attached collection electric field positive plate is arranged in separating flow tract, close to the entrance of separating flow tract, just with the first external stabilized power Pole is electrically connected;
Attached collection electric field negative plate is arranged in separating flow tract, negative with the first external stabilized power close to the entrance of separating flow tract Pole is electrically connected, and with attached collection electric field positive plate face and parallel interval setting, attached collection electric field positive plate and attached collection electric field negative plate The distance between be d;
Electric field positive plate is detached, is arranged in separating flow tract, close to the outlet of separating flow tract, with attached collection electric field negative plate same It on straight line, is connect with the anode of the second external stabilized power, and there is D spacing, D between the rear end of attached collection electric field negative plate More than 0;First external stabilized power is pulsed voltage of voltage regulation;
Electric field negative plate is detached, is arranged in separating flow tract, close to the outlet of separating flow tract, with attached collection electric field positive plate same It on straight line, is connect with the cathode of the second external stabilized power, and there is D spacing, D between the rear end of attached collection electric field positive plate More than 0;
The outlet of separating flow tract is equipped with N blocks and detaches the split-flow baffles of electric field positive plate parallel interval setting, to detach stream The outlet in road is divided into N+1 shunting subexit, and the value of N is the natural number more than or equal to 2;
It will be positioned at a most intermediate shunting subexit or positioned at any of most intermediate two shuntings subexit shunting subexit Waste water of the water of outflow as water filtering system;The water flowed out from remaining shunting subexit is mixed, system is filtered as water The normal water outlet of system.
2. water filtering system according to claim 1, it is characterised in that:The N=2, wherein first piece of split-flow baffles with Detaching the distance between electric field positive plate is:Wherein K is normal more than 0 less than 1 Number, voltages of the U between the second external stabilized power positive and negative anodes, l are the length for detaching electric field positive plate or detaching electric field negative plate Degree, v are the water velocity that water flows through separating flow tract, and d is the distance between separation electric field positive plate and separation electric field negative plate; Ranging from 1/15~1/8;Second piece of split-flow baffles be with the distance between electric field positive plate is detached:Ranging from 1/45~1/40;It will be from first piece of split-flow baffles and second Waste water of the water of the shunting subexit outflow formed between block split-flow baffles as water filtering system;Son will be shunted from other two The water of outlet outflow is mixed, the normal water outlet as water filtering system.
3. water filtering system according to claim 1, it is characterised in that:The N=3, wherein wherein first piece shunting every Plate is with the distance between electric field positive plate is detached:Wherein K is to be more than 0 less than 1 Constant, voltages of the U between the second external stabilized power positive and negative anodes, l be separation electric field positive plate or separation electric field negative plate Length, v is that water flows through the water velocity of separating flow tract, d be detach between electric field positive plate and separation electric field negative plate away from From;Ranging from 1/15~1/8;Second piece of split-flow baffles be with the distance between electric field positive plate is detached:Ranging from 1/28~1/20;Third block split-flow baffles with detach electric field The distance between positive plate is:Ranging from:1/45~1/40, it will be from Waste water of the water of the shunting subexit outflow formed between two pieces of split-flow baffles and third block split-flow baffles as water filtering system; The water flowed out from its excess-three shunting subexit is mixed, the normal water outlet as water filtering system.
4. water filtering system according to claim 1, it is characterised in that:The pulsed of first external stabilized power is steady In piezoelectricity pressure, pressing time, which is less than, is not pressurized the time, i.e., the duty ratio of pulsed voltage of voltage regulation is less than 50%.
5. water filtering system according to claim 1, it is characterised in that:First external stabilized power pressurization when, Voltage between positive and negative anodes is less than or equal to 2V;Voltage between second external stabilized power positive and negative anodes is less than or equal to 2V.
6. water filtering system according to claim 1, it is characterised in that:It detaches electric field cathode leaf length and is detaching electric field just Pole piece length is identical, and D is identical as electric field cathode leaf length is detached.
7. water filtering system according to claim 1, it is characterised in that:The entrance of the separating flow tract is arranged in attached current collection Between field positive plate front end and attached collection electric field negative plate front end or attached collection electric field positive plate front end and attached collection electric field cathode The entrance of the separating flow tract is formed between piece front end;Detach electric field positive plate rear end and separation electric field negative plate rear end it Between form the outlet of the separating flow tract.
8. according to the water filtering system described in any one of claim 1~7 claim, it is characterised in that:The preceding mistake Filter device includes the by-pass filtration unit that filter core is PP cottons, and filter core is the secondary filtration unit of activated carbon and filter core is ultrafiltration The three-stage filtration unit of film;The entrance of by-pass filtration unit is connected to the water inlet of water filtering system, and by-pass filtration unit goes out Mouth is connected to the entrance of secondary filtration unit, and the outlet of secondary filtration unit is connected to the entrance of three-stage filtration unit, three-level mistake The outlet of filter unit is connected to the entrance of separating flow tract in separation of heavy metal ions device.
9. water filtering system according to claim 8, it is characterised in that:The outlet of three-stage filtration unit and heavy metal ion Flowmeter is equipped in separator between the entrance of separating flow tract.
CN201721907403.XU 2017-12-29 2017-12-29 A kind of water filtering system Active CN207748987U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111252959A (en) * 2018-11-30 2020-06-09 宁波方太厨具有限公司 Water purifying device capable of adjusting water quality

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111252959A (en) * 2018-11-30 2020-06-09 宁波方太厨具有限公司 Water purifying device capable of adjusting water quality
CN111252959B (en) * 2018-11-30 2021-12-17 宁波方太厨具有限公司 Water purifying device capable of adjusting water quality

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