CN105366768B - Cleaning method of water purifying equipment - Google Patents
Cleaning method of water purifying equipment Download PDFInfo
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- CN105366768B CN105366768B CN201410386356.3A CN201410386356A CN105366768B CN 105366768 B CN105366768 B CN 105366768B CN 201410386356 A CN201410386356 A CN 201410386356A CN 105366768 B CN105366768 B CN 105366768B
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- Prior art keywords
- raw water
- ultra
- filtration element
- interface
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 360
- 238000004140 cleaning Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 124
- 238000000746 purification Methods 0.000 claims abstract description 13
- 239000008213 purified water Substances 0.000 claims description 24
- 230000002000 scavenging effect Effects 0.000 claims description 18
- 238000009736 wetting Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 239000011258 core-shell material Substances 0.000 description 8
- 238000005452 bending Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000020680 filtered tap water Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a cleaning method of water purification equipment, which comprises the following steps: the first raw water interface is used as a water inlet end, the second raw water interface is used as a water outlet end, and raw water is controlled to enter the ultrafiltration filter element from the first raw water interface for cleaning; and after the preset first switching time, switching the first raw water interface to be a water outlet end and the second raw water interface to be a water inlet end, and controlling the raw water to enter the ultrafiltration filter element from the second raw water interface for cleaning. In the process of cleaning the ultrafiltration filter element, the two raw water interfaces are switched between the water inlet end and the water outlet end, and the ultrafiltration filter element is cleaned by adopting two methods alternately, so that the problem that the pipe wire of the ultrafiltration filter element is broken due to the impact of water flow can be avoided as the raw water enters from one water inlet end for a long time, and the ultrafiltration filter element can be cleaned effectively and the service life of the ultrafiltration filter element is prolonged.
Description
Technical field
The present invention relates to technical field of water purification more particularly to the cleaning methods of purifier.
Background technology
Existing purifier, the ultra-filtration element for being used to be filtered tap water in the ultrafilter for generating purified water,
Ultra-filtration element pipe silk, filter core head and filter-core shell are generally included, and is arranged at filter core head and two raw waters of filter-core shell bottom
Interface.At present when cleaning ultra-filtration element, need periodically to carry out special cleaning, cannot often clean, and cleaning when
Wait is typically using the raw water interface being arranged at filter core head as water inlet end, the raw water interface in filter-core shell bottom is arranged as water outlet
End, in cleaning, tap water enters from water inlet end, is cleaned to ultra-filtration element pipe silk, the tap water after cleaning is arranged by water outlet
Go out, this cleaning method is since the flow of water is constant, and water inlet end is fixed with water outlet, so that ultrafiltration is filtered
The cleaning performance of core is poor, and can reduce the service life of ultra-filtration element.
The above is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that the above is existing skill
Art.
Invention content
Effectively ultra-filtration element is cleaned it is a primary object of the present invention to realize, and ultra-filtration element can be extended
Service life.
To achieve the above object, the present invention provides a kind of cleaning method of purifier, the cleaning side of the purifier
Method includes the following steps：
Using the first raw water interface as water inlet end, for the second raw water interface as water outlet, control raw water is former by described first
Water interface, which enters in ultra-filtration element, to be cleaned；
After preset first switching time, it is water outlet, the second raw water interface to switch the first raw water interface
For water inlet end, control raw water, which is entered by the second raw water interface in ultra-filtration element, is cleaned.
Preferably, the control raw water enters the step of being rinsed in ultra-filtration element by the first raw water interface and wraps
It includes：
Control raw water is entered by the first raw water interface in ultra-filtration element；
The ultra-filtration element is cleaned in the first scavenging period, the raw water after cleaning is connect by second raw water
Mouth discharge.
Preferably, described before the control raw water enters the step in ultra-filtration element by the first raw water interface
The cleaning method of purifier further includes step：
The first flow velocity that raw water enters the first raw water interface is set.
Preferably, the control raw water enters the step of being cleaned in ultra-filtration element by the second raw water interface and wraps
It includes：
Control raw water is entered by the second raw water interface in ultra-filtration element；
The ultra-filtration element is cleaned in the second scavenging period, the raw water after cleaning is connect by first raw water
Mouth discharge.
Preferably, described before the control raw water enters the step in ultra-filtration element by the second raw water interface
The cleaning method of purifier further includes step：
The second flow speed that raw water enters the second raw water interface is set.
Preferably, the second flow speed is less than or equal to first flow velocity.
Preferably, first scavenging period is more than second scavenging period.
Preferably, the cleaning method of the purifier further includes step：
When the first raw water interface is water inlet end, the second raw water interface is when closing, and raw water is connect by first raw water
Mouth enters in the ultra-filtration element, is filtered generation purified water by the ultra-filtration element, and by the purified water by water purification
Outlet is discharged；Alternatively,
When the second raw water interface is water inlet end, the first raw water interface is when closing, and raw water is connect by second raw water
Mouth enters in the ultra-filtration element, is filtered generation purified water by the ultra-filtration element, and by the purified water by water purification
Outlet is discharged.
Preferably, described after preset first switching time, it is water outlet to switch the first raw water interface, described the
Two raw water interfaces be water inlet end, control raw water by the second raw water interface enter the step of being cleaned in ultra-filtration element it
Afterwards, the cleaning method of the purifier further includes step：
After preset second switching time, it is water inlet end, the second raw water interface to switch the first raw water interface
As water outlet, control raw water, which is entered by the first raw water interface in ultra-filtration element, is cleaned, and is switched repeatedly.
The present invention is when the ultra-filtration element to purifier cleans, first using the first raw water interface as water inlet end,
As water outlet, control raw water is entered by the first raw water interface in ultra-filtration element is cleaned two raw water interfaces；It is cut preset
After changing the time, the first raw water interface of switching is water outlet, and the second raw water interface is water inlet end, and control raw water is by the second raw water interface
Into being cleaned in ultra-filtration element.During cleaning ultra-filtration element, two raw water interfaces are subjected to water inlet end and water outlet
The switching at end, and using two methods alternately ultra-filtration element is cleaned, due to avoid for a long time by raw water by one into
The problem of water end (W.E.) enters, and the impact to can avoid flow causes ultra-filtration element pipe silk to be broken, in this way, can be effectively to ultrafiltration
Filter core is cleaned, and extends the service life of ultra-filtration element.
Description of the drawings
Fig. 1 is the flow diagram of the cleaning method first embodiment of purifier of the present invention；
Fig. 2 is the refinement stream that control raw water is entered the step of being rinsed in ultra-filtration element by the first raw water interface in Fig. 1
Journey schematic diagram；
Fig. 3 is the flow diagram of the cleaning method second embodiment of purifier of the present invention；
Fig. 4 is the refinement stream that control raw water is entered the step of being rinsed in ultra-filtration element by the second raw water interface in Fig. 1
Journey schematic diagram；
Fig. 5 is the flow diagram of the cleaning method 3rd embodiment of purifier of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of cleaning method of purifier.
Purifier of the present invention, ultra-filtration element include ultra-filtration element pipe silk, filter core head and filter-core shell, and
Multiple raw water interfaces.Wherein, ultra-filtration element pipe silk is for being filtered to generate purified water tap water, the ultra-filtration element pipe silk
Structure be side wall can be permeable slender pipeline；Filter core head is connected with the pipeline tapping end of ultra-filtration element pipe silk；Filter-core shell
For placing ultra-filtration element pipe silk, and for accommodating raw water to be clean；Raw water interface can be used as water inlet end and also can be used as out
Water end (W.E.), the raw water interface in the present embodiment could be provided as two, and, close at filter core head, another setting exists for one of them
Near the bottom of filter-core shell, two raw water interfaces can also be arranged on the side wall of filter-core shell.
Referring to Fig.1, Fig. 1 is the flow diagram of the cleaning method first embodiment of purifier of the present invention.
In one embodiment, the cleaning method of the purifier includes：
Step S10, using the first raw water interface as water inlet end, the second raw water interface is as water outlet, and control raw water is by the
One raw water interface, which enters in ultra-filtration element, to be cleaned；
In the present embodiment, the raw water interface being arranged close at filter core head is the first raw water interface, is arranged in filter-core shell
Raw water interface near bottom is the second raw water interface.When needing to clean ultra-filtration element, by the first raw water interface
As water inlet end, the second raw water interface is entered by the first raw water interface in ultra-filtration element as water outlet, control raw water, and cleaning is super
Filter core is filtered, and the raw water after cleaning is discharged by the second raw water interface.
Step S20, after preset first switching time, the first raw water interface of switching is water outlet, the second raw water interface
For water inlet end, control raw water, which is entered by the second raw water interface in ultra-filtration element, is cleaned.
Before cleaning ultra-filtration element, pre-set for one first switching time, for being cut in water inlet end and water outlet
It changes, i.e., is interchangeable water inlet end and water outlet after switching time, can realize water inlet end by time control valve and go out
The switching of water end (W.E.).After preset switching time, the first raw water interface of switching be water outlet, and switch the second raw water interface be into
Water end (W.E.), control raw water are entered by the second raw water interface in ultra-filtration element, clean ultra-filtration element, and the raw water after cleaning is by the first original
Water interface is discharged.In the present embodiment, also default one second switching time is executing step S20 and is reaching second switching time
Afterwards, switch the first raw water interface again as water inlet end, the second raw water interface controls raw water by the first original as water outlet
Water interface, which enters in ultra-filtration element, to be cleaned；After cleaning reached for the first switching time, switching the first raw water interface again is
Water outlet, the second raw water interface are water inlet end, switch repeatedly, are cleaned to the ultra-filtration element of purifier.
The present embodiment is when the ultra-filtration element to purifier cleans, first using the first raw water interface as water inlet end,
As water outlet, control raw water is entered by the first raw water interface in ultra-filtration element is cleaned second raw water interface；Preset
After switching time, the first raw water interface of switching is water outlet, and the second raw water interface is water inlet end, and control raw water is connect by the second raw water
Mouth, which enters in ultra-filtration element, to be cleaned.During cleaning ultra-filtration element, two raw water interfaces are subjected to water inlet end and are gone out
The switching of water end (W.E.), and alternately ultra-filtration element is cleaned using two methods, due to avoiding raw water for a long time by one
The problem of water inlet end enters, and the impact to can avoid flow causes ultra-filtration element pipe silk to be broken, in this way, can be effectively to super
Filter filter core is cleaned, and extends the service life of ultra-filtration element.
With reference to Fig. 2, Fig. 2 is that control raw water enters the step of being rinsed in ultra-filtration element by the first raw water interface in Fig. 1
Refinement flow diagram.
In the above-described embodiments, step S10 further comprises：
Step S11, control raw water are entered by the first raw water interface in ultra-filtration element；
Step S12 cleans ultra-filtration element in the first scavenging period, by the raw water after cleaning by the second raw water mouth
Discharge.
Using the first raw water interface as water inlet end, after the second raw water interface is as water outlet, control raw water is by the first raw water
Interface enters in ultra-filtration element, is cleaned to ultra-filtration element in the first scavenging period, and by the raw water after cleaning by second
Raw water interface is discharged.Raw water is entered by the first raw water interface in ultra-filtration element, since the direction of flow relatively meets ultra-filtration element pipe
The bending tendency stress of silk is not easy that ultra-filtration element pipe silk is caused to be broken because of the impact of flow during cleaning.First is clear
Washing the time can be by user according to the self-defined setting of actual conditions.
With further reference to Fig. 4, Fig. 4 is entered by the second raw water interface in ultra-filtration element for control raw water in Fig. 1 to be rinsed
The step of refinement flow diagram.
In the above-described embodiments, step S20 further comprises：
Step S21, control raw water are entered by the second raw water interface in ultra-filtration element；
Step S22 cleans ultra-filtration element in the second scavenging period, by the raw water after cleaning by the first raw water mouth
Discharge.
Using the second raw water interface as water inlet end, after the first raw water interface is as water outlet, control raw water is by the second raw water
Interface enters in ultra-filtration element, is cleaned to ultra-filtration element in the second scavenging period, and by the raw water after cleaning by first
Raw water interface is discharged.Raw water is entered by the second raw water interface in ultra-filtration element, since the direction of flow is directed towards ultra-filtration element pipe
The bending direction of silk such as uses this cleaning method, the impact of flow to most likely result in the change of ultra-filtration element pipe silk for a long time
Shape is even broken.Therefore, it in the present embodiment when the second scavenging period is arranged, is set to be less than the first scavenging period, with
Ensure while fully cleaning ultra-filtration element, and ultra-filtration element pipe silk will not be impacted.
Using the first raw water interface as water inlet end, after the second raw water interface is as water outlet, control raw water is by the first raw water
Interface enters in ultra-filtration element, is cleaned to ultra-filtration element in the first scavenging period, and by the raw water after cleaning by second
Raw water interface is discharged；Using the second raw water interface as water inlet end, after the first raw water interface is as water outlet, control raw water is by the
Two raw water interfaces enter in ultra-filtration element, are cleaned to ultra-filtration element in the second scavenging period, and by the raw water after cleaning
It is discharged by the first raw water interface.Different scavenging periods is respectively set to two kinds of cleaning ways, it is clear in corresponding scavenging period
Ultra-filtration element is washed, further avoids and for a long time enters raw water by a water inlet end, the impact for further avoiding flow is led
The problem of causing the fracture of ultra-filtration element pipe silk.
It is the flow diagram of the cleaning method second embodiment of purifier of the present invention with reference to Fig. 3, Fig. 3.
On the basis of the cleaning method first embodiment of purifier of the present invention, before step S11, step S10 is also
Including：
Step S13, setting raw water enter the first flow velocity of the first raw water interface.
Before control raw water is entered by the first raw water interface in ultra-filtration element, the first flow velocity that setting raw water enters makes
Raw water is entered with first flow velocity in the first raw water interface, first flow velocity can by user according to the self-defined setting of actual conditions,
Ensure that the raw water entered in the first raw water interface with the first flow velocity size can fully clean ultra-filtration element, and not too large, with
It avoids impacting ultra-filtration element pipe silk.
With further reference to Fig. 5, Fig. 5 is the flow diagram of the cleaning method 3rd embodiment of purifier of the present invention.
On the basis of the cleaning method first embodiment of purifier of the present invention, before step S21, step S20 is also
Including：
Step S23, setting raw water enter the second flow speed of the second raw water interface.
Before control raw water is entered by the second raw water interface in ultra-filtration element, the second flow speed that setting raw water enters makes
Raw water is entered with the second flow speed in the second raw water interface, the second flow speed can by user according to the self-defined setting of actual conditions,
When being entered in ultra-filtration element by the second raw water interface due to raw water, since the direction of flow is directed towards the bending of ultra-filtration element pipe silk
Direction, therefore the flow of raw water should not be set as excessive when in this way, in the present embodiment, set second flow speed to
Less than or equal to the first flow velocity, to ensure that the raw water entered in the second raw water interface can fully clean ultra-filtration element, flow is again
It is not too large, to avoid ultra-filtration element pipe silk is impacted；In addition, in the present embodiment the first flow velocity and second flow speed flow velocity size
It is unstable, you can, can also random transformation flow velocity size to convert flow velocity size according to default rule.
Control raw water entered in ultra-filtration element by water inlet end before, be arranged in varied situations corresponding first flow velocity and
Second flow speed, and entered in ultra-filtration element with the first flow velocity and second flow speed of setting control raw water, it is adjusted according to actual conditions
The flow that raw water enters, further ensure that can avoid the problem that the impact of flow causes ultra-filtration element pipe silk to be broken.
On the basis of the cleaning method first embodiment of purifier of the present invention, the cleaning of purifier of the present invention is proposed
Method fourth embodiment, in the embodiment, the cleaning method of purifier further includes：
When the first raw water interface is water inlet end, the second raw water interface is when closing, and raw water is by the first raw water interface into the excess of imports
It filters in filter core, generation purified water is filtered by ultra-filtration element, and purified water is discharged by water purification outlet；Alternatively,
When the second raw water interface is water inlet end, the first raw water interface is when closing, and raw water is by the second raw water interface into the excess of imports
It filters in filter core, generation purified water is filtered by ultra-filtration element, and purified water is discharged by water purification outlet.
In the present embodiment, if one in two raw water interfaces is water inlet end, when another is closes, then at this time by super
The filtering that filter core carries out purified water is filtered, control raw water is entered by open raw water interface in ultra-filtration element, and ultra-filtration element is passed through
It is filtered generation purified water, and purified water is discharged by water purification outlet.Wherein, when the first raw water interface be open, second
Raw water interface is when closing, and control raw water is entered by the first raw water interface in ultra-filtration element, and production is filtered by ultra-filtration element
Raw purified water, and purified water is discharged by water purification outlet；When the second raw water interface is water inlet end, the first raw water interface is to close
When, raw water is entered by the second raw water interface in ultra-filtration element, and generation purified water is filtered by ultra-filtration element, and by purified water
It is discharged by water purification outlet.
One in raw water interface is water inlet end, and when another is closes, the mistake of purified water is carried out by ultra-filtration element
Filter, control raw water are entered by open raw water interface in ultra-filtration element, and generation purified water is filtered by ultra-filtration element, and
Purified water is discharged by water purification outlet.When not cleaning ultra-filtration element, normal water purification process is carried out by ultra-filtration element, from
And it is convenient for users to use.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of cleaning method of purifier, which is characterized in that the purifier is ultra-filtration element purifier, described net
The cleaning method of wetting system includes the following steps：
Using the first raw water interface as water inlet end, the second raw water interface is connect as water outlet, control raw water by first raw water
Mouth enters in ultra-filtration element；
The ultra-filtration element is cleaned in the first scavenging period, the raw water after cleaning is arranged by the second raw water interface
Go out；
After preset first switching time, it is water outlet to switch the first raw water interface, the second raw water interface be into
Water end (W.E.), control raw water are entered by the second raw water interface in ultra-filtration element；
The ultra-filtration element is cleaned in the second scavenging period, the raw water after cleaning is arranged by the first raw water interface
Go out.
2. the cleaning method of purifier as described in claim 1, which is characterized in that in the control raw water by described first
Raw water interface enters before the step in ultra-filtration element, and the cleaning method of the purifier further includes step：
The first flow velocity that raw water enters the first raw water interface is set.
3. the cleaning method of purifier as claimed in claim 2, which is characterized in that in the control raw water by described second
Raw water interface enters before the step in ultra-filtration element, and the cleaning method of the purifier further includes step：
The second flow speed that raw water enters the second raw water interface is set.
4. the cleaning method of purifier as claimed in claim 3, which is characterized in that the second flow speed is less than or equal to described
First flow velocity.
5. the cleaning method of purifier as described in claim 1, which is characterized in that first scavenging period is more than described
Second scavenging period.
6. the cleaning method of purifier as described in claim 1, which is characterized in that the cleaning method of the purifier is also
Including step：
When the first raw water interface be water inlet end, the second raw water interface be close when, raw water by the first raw water interface into
Enter in the ultra-filtration element, generation purified water is filtered by the ultra-filtration element, and the purified water is discharged by water purification
Mouth discharge；Alternatively,
When the second raw water interface be water inlet end, the first raw water interface be close when, raw water by the second raw water interface into
Enter in the ultra-filtration element, generation purified water is filtered by the ultra-filtration element, and the purified water is discharged by water purification
Mouth discharge.
7. the cleaning method of purifier as described in claim 1, which is characterized in that described in preset first switching time
Afterwards, it is water outlet to switch the first raw water interface, and the second raw water interface is water inlet end, and control raw water is former by described second
Water interface enters after the step of being cleaned in ultra-filtration element, and the cleaning method of the purifier further includes step：
After preset second switching time, it is water inlet end, the second raw water interface conduct to switch the first raw water interface
Water outlet, control raw water, which is entered by the first raw water interface in ultra-filtration element, is cleaned, and is switched repeatedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410386356.3A CN105366768B (en) | 2014-08-07 | 2014-08-07 | Cleaning method of water purifying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410386356.3A CN105366768B (en) | 2014-08-07 | 2014-08-07 | Cleaning method of water purifying equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105366768A CN105366768A (en) | 2016-03-02 |
| CN105366768B true CN105366768B (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410386356.3A Expired - Fee Related CN105366768B (en) | 2014-08-07 | 2014-08-07 | Cleaning method of water purifying equipment |
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|---|---|---|---|---|
| WO2000074826A1 (en) * | 1996-07-11 | 2000-12-14 | Zenon Environmental, Inc. | Apparatus and method for membrane filtration with enhanced net flux |
| CN1695776A (en) * | 2005-03-28 | 2005-11-16 | 天津大学 | Method for rinsing membrane-filtering unit of hollow fiber |
| CN101869893A (en) * | 2009-04-22 | 2010-10-27 | 云南能工环境资源股份有限公司 | Pulsating cleaning method |
| CN103084069A (en) * | 2013-02-07 | 2013-05-08 | 深圳市诚德来实业有限公司 | Internal-pressure type ultrafiltration membrane flusher and flushing method |
| CN103084070A (en) * | 2013-02-22 | 2013-05-08 | 浙江开创环保科技有限公司 | Method for preventing whole-house separate purifying device film from being polluted |
| CN203002222U (en) * | 2012-12-30 | 2013-06-19 | 昆明金泽实业有限公司 | Efficient water treatment device easy for back washing and regeneration |
| CN103272415A (en) * | 2013-05-14 | 2013-09-04 | 吴龙海 | Filtering system and filtering method |
| CN203269685U (en) * | 2013-06-04 | 2013-11-06 | 浙江沁园水处理科技有限公司 | Positive and negative flushing type water purifier |
-
2014
- 2014-08-07 CN CN201410386356.3A patent/CN105366768B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000074826A1 (en) * | 1996-07-11 | 2000-12-14 | Zenon Environmental, Inc. | Apparatus and method for membrane filtration with enhanced net flux |
| CN1695776A (en) * | 2005-03-28 | 2005-11-16 | 天津大学 | Method for rinsing membrane-filtering unit of hollow fiber |
| CN101869893A (en) * | 2009-04-22 | 2010-10-27 | 云南能工环境资源股份有限公司 | Pulsating cleaning method |
| CN203002222U (en) * | 2012-12-30 | 2013-06-19 | 昆明金泽实业有限公司 | Efficient water treatment device easy for back washing and regeneration |
| CN103084069A (en) * | 2013-02-07 | 2013-05-08 | 深圳市诚德来实业有限公司 | Internal-pressure type ultrafiltration membrane flusher and flushing method |
| CN103084070A (en) * | 2013-02-22 | 2013-05-08 | 浙江开创环保科技有限公司 | Method for preventing whole-house separate purifying device film from being polluted |
| CN103272415A (en) * | 2013-05-14 | 2013-09-04 | 吴龙海 | Filtering system and filtering method |
| CN203269685U (en) * | 2013-06-04 | 2013-11-06 | 浙江沁园水处理科技有限公司 | Positive and negative flushing type water purifier |
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| Publication number | Publication date |
|---|---|
| CN105366768A (en) | 2016-03-02 |
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