CN108479147A - Interaction cleaning seawater filtering device based on pressure differential detection - Google Patents
Interaction cleaning seawater filtering device based on pressure differential detection Download PDFInfo
- Publication number
- CN108479147A CN108479147A CN201810170370.8A CN201810170370A CN108479147A CN 108479147 A CN108479147 A CN 108479147A CN 201810170370 A CN201810170370 A CN 201810170370A CN 108479147 A CN108479147 A CN 108479147A
- Authority
- CN
- China
- Prior art keywords
- filter
- valve
- water inlet
- cleaning
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 40
- 239000013535 sea water Substances 0.000 title claims abstract description 37
- 238000001914 filtration Methods 0.000 title claims abstract description 22
- 230000003993 interaction Effects 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000010865 sewage Substances 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 13
- 239000013618 particulate matter Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
- B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
- B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The present invention relates to a kind of, and seawater filtering device is cleaned in the interaction based on pressure differential detection.Water inlet, water outlet, upper sewage draining exit, down blow mouth, upper water inlet line, upper inlet valve, scum valve, upper pressure detector, upper filter, flange partition board, lower filter, outlet valve, shell, lower water inlet line, lower inlet valve, down blow valve and lower pressure detector, basic principle are：Using double filter cartridge constructions, two pressure detectors of setting detect pressure difference inside two filter cores and external respectively, determine whether two filter cores interact cleaning according to the pressure difference of detection.When pressure difference is greater than or equal to the threshold value of setting, the cleaning of corresponding filter core is carried out；Conversely, only carrying out the filtering of seawater.It can avoid relatively frequently interacting cleaning in this way, achieve the purpose that save electric energy, realize blowdown automatically, need not manually clean, extend strainer service life.
Description
Technical field
The invention belongs to marine survey technology fields, and in particular to a kind of interaction cleaning sea water filter based on pressure differential detection
Device can be detected filter core inside and external pressure difference, to determine whether to be rinsed filter core, avoid frequently rinsing institute
The electric energy of consumption realizes energy-efficient purpose.
Background technology
Seawater filtering device is an indispensable key equipment for ensureing marine exploration equipment normal work, can will be extra large
The large-volume particulates objects such as impurity, silt, planktonic organism in water filter out.Interaction cleaning can remove the attached of interior and surface
Object, ensures that the long-time of filter device uses.But if the pressure difference of filter core inside and outside cannot be detected whether to judge filter core
Block, then need continually to interact flushing, the consumption of the energy can be caused, this to self-tolerant marine exploration equipment particularly not
Profit.The present invention determines whether to start interaction cleaning operating mode according to pressure difference, to realize by the pressure difference of detection strainer inside and outside
The purpose saved electric energy, extend detecting devices usage time.
Invention content
The purpose of the present invention is to provide a kind of, and seawater filtering device is cleaned in the interaction based on pressure differential detection.The device can be with
Whether marine exploration coordinative composition of equipments uses, blocked with to judge filter core by detecting the pressure difference of filter core inside and outside and chocking-up degree, into
And determine whether to interact cleaning to strainer, achieve the purpose that save electric energy.
Interaction cleaning seawater filtering device proposed by the present invention based on pressure differential detection, including water inlet, water outlet, upper row
Dirty mouth, down blow mouth, upper water inlet line 1, scum valve 3, upper pressure detector 4, upper filter 5, flange partition board 6, lower filter 7,
Outlet valve 8, shell 9, lower water inlet line 10, lower inlet valve 11, down blow valve 12 and lower pressure detector 13, wherein：Upper filter 5
It is cylinder-shaped with lower filter 7, upper filter 5 and lower filter 7 is set in shell 9, flange is set between upper filter 5 and lower filter 7
Partition board 6,9 middle part of shell connect water outlet by outlet valve 8；Water inlet is divided into two-way, connects upper water inlet line 1 all the way, another
The lower water inlet line 10 of road connection, upper water inlet line 1 pass sequentially through inlet valve 2 and connect upper filter with scum valve 3 and pipeline
5, lower water inlet line 10 passes sequentially through lower inlet valve 11 and connects lower filter 7, upper pressure detector 4 with down blow valve 12 and pipeline
One end connects 5 top of upper filter, and the other end connects the channel between 5 outside of upper filter and 9 inner wall of shell；Lower pressure detector 13
One end connects 7 bottom of lower filter, and the other end connects the channel between 7 outside of lower filter and 9 inner wall of shell；Filter device is using double
Filter cartridge construction, seawater enters upper filter 5 and lower filter 7 simultaneously from both direction, and when normal work, two filter cores filter sea simultaneously
Water also increases filtration yield；When blowdown, a filter core normal work is to provide the filtering sea successively flowed, to another
Filter core carries out back flush.
The seawater flowed into from water inlet is divided into upper and lower two-way, is flowed into respectively by upper water inlet line 1 and lower water inlet line 10
Upper filter 5 and lower filter 7；According to water inlet flow direction, inlet valve 2 and scum valve 3 are set gradually in upper water inlet line 1,
Lower inlet valve 11 and down blow valve 12 are set gradually in lower water inlet line 10；Upper inlet valve 2 and lower inlet valve 11, scum valve 3
It is automatically controlled bi-bit bi-pass shut-off valve or automatically controlled two-position three way shut-off valve with down blow valve 12, is powered and opens, power-off is closed；Upper row
After dirty valve 3 obtains electric-opening, sewage draining exit in connection makes water inlet line 1 be connected with upper sewage draining exit；Down blow valve 12 obtains electric-opening
Afterwards, down blow mouth is connected, lower water inlet line 10 is made to be connected with down blow mouth；
Flange partition board 6 separates the inner cavity of upper filter 5 and lower filter 7, forms two filtering vessels, also increases filtering energy
Power；Filtered seawater is along the channel outside strainer, i.e., between shell 9 and upper filter 5 and between shell 9 and lower filter 7
Channel, the two channels connection, by outlet valve 8 interflow after flow to water outlet；The material of flange partition board 6 is seawater corrosion resistance
Metal or nonmetallic materials；The material of shell 9 is also the metal or nonmetallic materials of seawater corrosion resistance.
When normal work, upper inlet valve 2 and lower inlet valve 11 electric-opening so that water inlet respectively with upper filter 5 and under
7 inside connection of filter core；Scum valve 3 and 12 dead electricity of down blow valve are closed, sewage draining exit and down blow mouth in cut-out；Outlet valve simultaneously
8 dead electricity are opened, and water outlet is connected；Seawater passes through upper filter 5 respectively and lower filter 7 filters simultaneously, and particulate matter is trapped within strainer
It is internal；Filtered seawater, flows out to outside strainer, after outlet valve 8, is flowed out from water outlet；Outlet valve 8 is automatically controlled two
Two-way shut-off valve or automatically controlled two-position three way shut-off valve, dead electricity are opened, and obtain electrically disconnected, and when power-off connects water outlet.
Interaction cleaning is divided into two operating modes：Upper filter cleans and lower filter cleaning.According to the detection of pressure detector
Value determines whether to clean filter core, when detected value is greater than or equal to the threshold value of setting, is cleaned.Upper filter clean and under
Filter element cleaning operating mode alternately, it can be achieved that the cleaning of upper filter 5 and lower filter 7, reach automatic and realize blowdown, without artificial
The purpose of cleaning；
The detected value of upper pressure detector 4 and lower pressure detector 13 be both greater than or equal to setting threshold value, the big filter of detected value
Core is first cleaned, and small rear of detected value is cleaned；If two detected values are equal, the cleaning of upper filter 5 is first carried out, after
Carry out the cleaning of lower filter 7.
Upper filter cleaning pattern is：It is enterprising when the detected value of upper pressure detector 4 is greater than or equal to the threshold value of setting
2 dead electricity of water valve disconnects, water inlet line 1 in cut-out；Scum valve 3 electric-opening, sewage draining exit in connection；Outlet valve 8 must be electrically disconnected,
Close water outlet；7 filtered seawater of lower filter can only be along the channel outside strainer（I.e. between shell 9 and upper filter 5 and
Channel between shell 9 and lower filter 7）Flowing, realization is rinsed the inside of upper filter 5 and strainer inner surface, by particle
Object is discharged.
Lower filter cleaning pattern is：When the detected value of lower pressure detector 13 is greater than or equal to the threshold value of setting, under
11 dead electricity of inlet valve disconnects, and cuts off lower water inlet line 10；Down blow valve 12 obtains electric-opening, connects down blow mouth；Outlet valve 8 obtains electric
It disconnects, closes water outlet；5 filtered seawater of upper filter can only be along the channel outside strainer（I.e. shell 9 and upper filter 5 it
Between and the channel between shell 9 and lower filter 7）Flowing, realization are rinsed the inside of lower filter 7 and strainer inner surface,
Particulate matter is discharged.
The beneficial effects of the present invention are：The present invention can determine whether the journey that filter core blocks by the way that two pressure detectors are arranged
Degree, it is determined whether start filter core pays up mold cleaning formula, to realize the purpose for saving electric energy.
Description of the drawings
Fig. 1 is the principle of the present invention structural schematic diagram.
Figure label：1 is upper water inlet line, and 2 be upper inlet valve, and 3 be scum valve, and 4 be upper pressure detector, and 5 be upper
Filter core, 6 be flange partition board, and 7 be lower filter, and 8 be outlet valve, and 9 be shell, and 10 be lower water inlet line, and 11 be lower inlet valve, and 12 are
Down blow valve, 13 be lower pressure detector.
Specific implementation mode
It is further illustrated the present invention below by embodiment combination attached drawing.
Embodiment 1：Double filter core normal seawater filterings
As shown in Figure 1, interaction cleaning seawater filtering device, using double filter cartridge constructions, seawater enters upper filter simultaneously from both direction
5 and lower filter 7, when normal work, two filter cores filtering sea simultaneously also increases filtration yield；Interaction based on pressure differential detection
Cleaning seawater filtering device, including water inlet, water outlet, upper sewage draining exit, down blow mouth, upper water inlet line 1, upper inlet valve 2, on
Blowdown valve 3, upper pressure detector 4, upper filter 5, flange partition board 6, lower filter 7, outlet valve 8, shell 9, lower water inlet line 10, under
Inlet valve 11, down blow valve 12, lower pressure detector 13.
The seawater flowed into from water inlet is divided into upper and lower two-way, is flowed into respectively by upper water inlet line 1 and lower water inlet line 10
Upper filter 5 and lower filter 7；According to water inlet flow direction, inlet valve 2 and scum valve 3 are set gradually in upper water inlet line 1,
Lower inlet valve 11 and down blow valve 12 are set gradually in lower water inlet line 10；Upper inlet valve 2 and lower inlet valve 11, scum valve 3
It is automatically controlled bi-bit bi-pass shut-off valve or automatically controlled two-position three way shut-off valve with down blow valve 12, is powered and opens, dead electricity disconnects；Upper row
After dirty valve 3 obtains electric-opening, sewage draining exit in connection makes water inlet line 1 be connected with upper sewage draining exit；Down blow valve 12 obtains electric-opening
Afterwards, down blow mouth is connected, lower water inlet line 10 is made to be connected with down blow mouth.
Flange partition board 6 separates the inner cavity of upper filter 5 and lower filter 7, forms two filtering vessels, also increases filtering
Ability；Filtered seawater along the channel outside strainer, i.e., between shell 9 and upper filter 5 and shell 9 and lower filter 7 it
Between channel, the two channels connection, by outlet valve 8 interflow after flow to water outlet；The material of flange partition board 6 is that sea water resistance is rotten
The metal or nonmetallic materials of erosion；The material of shell 9 is also the metal or nonmetallic materials of seawater corrosion resistance.
When normal work, upper inlet valve 2 and lower inlet valve 11 electric-opening so that water inlet respectively with upper filter 5 and under
7 inside connection of filter core；Scum valve 3 and 12 dead electricity of down blow valve are closed, sewage draining exit and down blow mouth in cut-out；Outlet valve simultaneously
8 dead electricity are opened, and water outlet is connected；Seawater passes through upper filter 5 respectively and lower filter 7 filters simultaneously, and particulate matter is trapped within strainer
It is internal；Filtered seawater, flows out to outside strainer, after outlet valve 8, is flowed out from water outlet；Outlet valve 8 is automatically controlled two
Two-way shut-off valve or automatically controlled two-position three way shut-off valve, dead electricity are opened, are obtained electrically disconnected.
Embodiment 2：Interaction cleaning pattern
As shown in Figure 1, interaction cleaning is divided into two operating modes：Upper filter cleans and lower filter cleaning.According to pressure detector
Detected value determine whether to clean filter core, detected value be greater than or equal to setting threshold value when, cleaned.Upper filter is clear
It washes with lower filter cleaning operating mode alternately, it can be achieved that the cleaning of upper filter 5 and lower filter 7, reaches automatic and realize blowdown, nothing
The purpose that must manually clean；
The detected value of upper pressure detector 4 and lower pressure detector 13 be both greater than or equal to setting threshold value, the big filter of detected value
Core is first cleaned, and small rear of detected value is cleaned；If two detected values are equal, the cleaning of upper filter 5 is first carried out, after
Carry out the cleaning of lower filter 7；
Upper filter cleaning pattern is：When the detected value of upper pressure detector 4 is greater than or equal to the threshold value of setting, upper inlet valve
2 dead electricity disconnect, water inlet line 1 in cut-out；Scum valve 3 electric-opening, sewage draining exit in connection；Outlet valve 8 obtains electrically disconnected, closing
Water outlet；7 filtered seawater of lower filter can only be along the channel outside strainer（I.e. between shell 9 and upper filter 5 and shell
Channel between 9 and lower filter 7）Flowing, realization are rinsed the inside of upper filter 5 and strainer inner surface, particulate matter are arranged
Go out；
Lower filter cleaning pattern is：When the detected value of lower pressure detector 13 is greater than or equal to the threshold value of setting, lower water inlet
11 dead electricity of valve disconnects, and cuts off lower water inlet line 10；Down blow valve 12 obtains electric-opening, connects down blow mouth；Outlet valve 8 obtains electric disconnected
It opens, closes water outlet；5 filtered seawater of upper filter can only be along the channel outside strainer（I.e. between shell 9 and upper filter 5
And the channel between shell 9 and lower filter 7）Flowing, realization are rinsed the inside of lower filter 7 and strainer inner surface, will
Particulate matter is discharged.
Claims (4)
1. a kind of interaction cleaning seawater filtering device based on pressure differential detection, including water inlet, water outlet, upper sewage draining exit, lower row
Dirty mouth, upper water inlet line（1）, upper inlet valve（2）, scum valve（3）, upper pressure detector（4）, upper filter（5）, flange partition board
（6）, lower filter（7）, outlet valve（8）, shell（9）, lower water inlet line（10）, lower inlet valve（11）, down blow valve（12）With under
Pressure detector（13）, it is characterised in that：Upper filter（5）And lower filter（7）It is cylinder-shaped, shell（9）Interior setting upper filter
（5）And lower filter（7）, upper filter（5）And lower filter（7）Between be arranged flange partition board（6）, shell（9）Middle part passes through outlet valve
（8）Connect water outlet；Water inlet is divided into two-way, connects upper water inlet line all the way（1）, the lower water inlet line of another way connection（10）,
Upper water inlet line（1）Pass sequentially through inlet valve（2）And scum valve（3）And pipeline connects upper filter（5）, lower water inlet line
（10）Pass sequentially through lower inlet valve（11）With down blow valve（12）And pipeline connects lower filter（7）, upper pressure detector（4）One
End connection upper filter（5）Top, the other end connect upper filter（5）External and shell（9）Channel between inner wall；Lower pressure differential detection
Device（13）One end connects lower filter（7）Bottom, the other end connect lower filter（7）External and shell（9）Channel between inner wall；It crosses
Device is filtered using double filter cartridge constructions, seawater enters upper filter simultaneously from both direction（5）And lower filter（7）；Upper pressure detector
（4）Detect upper filter（5）The internal pressure difference with outside；Lower pressure detector（13）Detect lower filter（7）The internal pressure with outside
Difference.
2. the interaction cleaning seawater filtering device according to claim 1 based on pressure differential detection, it is characterised in that：According to upper
Pressure detector（4）With lower pressure detector（13）The pressure difference of detection determines upper filter（5）And lower filter（7）Whether handed over
Mutually cleaning carries out the cleaning of corresponding filter core when pressure difference is greater than or equal to the threshold value of setting；Conversely, only carrying out the mistake of seawater
Filter.
3. the interaction cleaning seawater filtering device according to claim 1 based on pressure differential detection, it is characterised in that upper pressure difference
Detector（4）Detected value be greater than or equal to setting threshold value when, upper inlet valve（2）Dead electricity, water inlet line in closing（1）, on
Blowdown valve（3）It obtains electric-opening and connects upper sewage draining exit, by lower filter（7）Filtered seawater is to upper filter（5）Inside and strainer
Inner surface is rinsed, and particulate matter is discharged；Lower pressure detector（13）Detected value be greater than or equal to setting threshold value when, under
Inlet valve（11）Dead electricity closes lower water inlet line（10）, down blow valve（12）It obtains electric-opening and connects down blow mouth, by upper filter（5）
Filtered seawater is to lower filter（7）Inside and strainer inner surface be rinsed, particulate matter is discharged.
4. the interaction cleaning seawater filtering device according to claim 1 based on pressure differential detection, it is characterised in that upper pressure difference
Detector（4）With lower pressure detector（13）Detected value be both greater than or equal to setting threshold value, the big filter core of detected value is advanced
Row cleaning, small rear of detected value are cleaned；If two detected values are equal, upper filter is first carried out（5）Cleaning, it is rear to carry out
Lower filter（7）Cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170370.8A CN108479147A (en) | 2018-03-01 | 2018-03-01 | Interaction cleaning seawater filtering device based on pressure differential detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170370.8A CN108479147A (en) | 2018-03-01 | 2018-03-01 | Interaction cleaning seawater filtering device based on pressure differential detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108479147A true CN108479147A (en) | 2018-09-04 |
Family
ID=63340940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810170370.8A Pending CN108479147A (en) | 2018-03-01 | 2018-03-01 | Interaction cleaning seawater filtering device based on pressure differential detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108479147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841113A (en) * | 2020-08-05 | 2020-10-30 | 庞磊 | Filter equipment for food inspection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068274A (en) * | 1991-07-06 | 1993-01-27 | 赵万富 | Filter |
| CN201221877Y (en) * | 2008-05-23 | 2009-04-15 | 天津美意空调设备销售有限公司 | Native sewage water heat pump air conditioning system |
| CN105324339A (en) * | 2014-03-11 | 2016-02-10 | 基础株式会社 | Water purifier |
-
2018
- 2018-03-01 CN CN201810170370.8A patent/CN108479147A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068274A (en) * | 1991-07-06 | 1993-01-27 | 赵万富 | Filter |
| CN201221877Y (en) * | 2008-05-23 | 2009-04-15 | 天津美意空调设备销售有限公司 | Native sewage water heat pump air conditioning system |
| CN105324339A (en) * | 2014-03-11 | 2016-02-10 | 基础株式会社 | Water purifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841113A (en) * | 2020-08-05 | 2020-10-30 | 庞磊 | Filter equipment for food inspection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108379909A (en) | A kind of sewage-treatment plant | |
| CN208389509U (en) | A kind of environmental protecting device handling sewage | |
| CN208793140U (en) | A kind of fuel filter and engine | |
| CN108483520A (en) | Interaction cleaning seawater filtering device | |
| CN101496970A (en) | On-line bidirectional automatic backwashing type filtering equipment | |
| CN108295529A (en) | Seawater filtering device is cleaned in energy storage | |
| CN108479147A (en) | Interaction cleaning seawater filtering device based on pressure differential detection | |
| CN107583328B (en) | For in sewage disinfection treatment into water filtering mechanism | |
| CN201304291Y (en) | Automatic back-washing filtering device | |
| CN211445418U (en) | Food wastewater treatment system | |
| CN203436889U (en) | Checking, guiding and filtering device | |
| CN110038341B (en) | Intelligent river water filtering equipment and method for high-pressure flushing | |
| CN201399286Y (en) | Online completely-automatic back-washing filter system | |
| CN208406297U (en) | A kind of recoil fore filter with multi-filtering function | |
| CN208043160U (en) | Intellectual water meter | |
| CN207243502U (en) | A kind of water process mechanism | |
| CN207342318U (en) | Anti-leakage type intelligence backwash filter | |
| CN217028286U (en) | Swimming pool clean system | |
| CN206045506U (en) | Auto-flushing defecator | |
| CN108273317A (en) | A kind of recoil fore filter with multi-filtering function | |
| CN210108814U (en) | Hierarchical formula water sample preprocessing device | |
| CN107376480A (en) | Filter element filtering device for dense salt waste water | |
| CN202105480U (en) | Full-automatic unpowered pressure differential filter | |
| CN203736947U (en) | Integral cartridge type healthy water device | |
| CN207413164U (en) | Double filter core forward direction drainages, back flush system for water purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180904 |