CN2578311Y - Negative backwash device for desalination pretreatment - Google Patents
Negative backwash device for desalination pretreatment Download PDFInfo
- Publication number
- CN2578311Y CN2578311Y CN02261469U CN02261469U CN2578311Y CN 2578311 Y CN2578311 Y CN 2578311Y CN 02261469 U CN02261469 U CN 02261469U CN 02261469 U CN02261469 U CN 02261469U CN 2578311 Y CN2578311 Y CN 2578311Y
- Authority
- CN
- China
- Prior art keywords
- pipeline
- sea water
- filter
- super
- negative 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a negative pressure backwash device for sea water desalination pretreatment, which relates to the field of a sea water desalting device. The utility model is a sea water desalting device aiming at that the existing sea water desalting device is not provided with a negative pressure backwash device. The utility model is characterized in that a pipeline on the upper part of a multiple-media filter is connected with a dirt discharge valve, a pipeline at the middle part is connected with two one-way valves, a pipeline on the lower part is connected with a throttle valve, and the three valves are all connected with a container; an outlet part of the container is connected with an air filter, the pipeline connected with the lower part of the multiple-media filter is communicated with a super filter, a flow ejector and a high pressure pump are arranged at the front of the super filter, and the flow ejector and the high pressure pump are connected with the super filter via the pipelines. The negative pressure backwash device can realize the negative pressure backwash under the condition that dynamic force is not added, and the output of fresh water is improved.
Description
Affiliated technical field
The utility model relates to the sea water desalting equipment field.
Background technology
At present, one of the key part of known sea water desalting equipment membrane module, because of being subjected to the influence of different flushing pressures, different waters seawater quality quality aspects factor, cause the membrane module maintenance rate higher, directly influence the effluent quality and the aquifer yield of membrane module work-ing life and qualified fresh water.
Summary of the invention
The purpose of this utility model is, provides a kind of sea water desaltination pretreated negative pressure back-purge system to this area, is subjected to the influence of unfavorable factor to solve membrane module, causes the problem that work-ing life is on the low side, maintenance workload is bigger.Design is that membrane module water outlet place and high-pressure pump stop the recoil hydraulic pressure of moment and come the surface contaminants of flushing membrane assembly when utilizing the sea water desaltination pre-treatment, and the pressure difference between using this moment opens the check valve of rated pressure automatically, carries out step blowdown.Now in conjunction with the accompanying drawings, its feature is described as follows: pretreated negative pressure back-purge system of a kind of sea water desaltination and back-flushing method, this device comprises primer pump, pipeline, check valve, more medium filter, wash water valve, super strainer, integrator, membrane module, high-pressure pump, throttling valve, ejector etc., seawater introduces by the road 2 through primer pump 1, check valve 3 enters more medium filter 4, it is characterized in that on the pipeline on more medium filter 4 tops, being connected with wash water valve 5, on the pipeline at middle part, be connected with two check valves, on the pipeline of its underpart, be connected with throttling valve 14, these three valves all are connected with container 15, be connected with air filter 16 in outlet of container portion, the pipeline that connects in the bottom of more medium filter communicates with super strainer 6, the place ahead of super strainer is provided with ejector 12 and high-pressure pump 10, is connected by pipeline.
This pretreated internal kinetic energy of sea water desaltination that utilizes had both reached the purpose of membrane module decontamination, saved the energy again, and the device compact in design, and was easy to implement, and certain application value is arranged.
Description of drawings
Fig. 1 is a topology layout synoptic diagram of the present utility model.
Sequence number among the figure and title: 1, primer pump, 2, pipeline, 3, check valve, 4, more medium filter, 5, wash water valve, 6, super strainer, 7, check valve, 8, integrator, 9, membrane module, 10, high-pressure pump, 11, throttling valve, 12, ejector, 13, pressure regulator valve, 14, throttling valve, 15, container, 16, air filter.
Embodiment
Is example with seawater in the whole process of this negative pressure back-purge system.Primer pump starts, and seawater is transported to check valve 3 by the road, enters more medium filter 4.Seawater is handled by multi-medium filtering, enters next technical process from the water outlet of bottom and handles, and enters in the container 15 by throttling valve 14 simultaneously, through certain integral action, the pressure in the container and water outlet pressure equilibrium.When device command high-pressure pump 10 is out of service, last terminal pressure in super strainer 6, the more medium filter 4 is decompression immediately, and water outlet pressure, container inner pressure moment is constant and traffic direction is changed, cause the multimedium upper end pressure superposition of more medium filter, dirt flows into container 15 with the throttling valve of more medium filter bottom, enter two check valves on the top of more medium filter again, finally drain into the device outside through wash water valve 5.Enter super strainer 6, ejector 12 through the effusive seawater in more medium filter bottom, input to integrator 8 through high-pressure pump 10, enter membrane module 9 again, the most qualified domestic fresh water is delivered to the user.Discharged through check valve 7 by the seawater that discharge at super strainer 6 tops, the defective fresh water of discharging through membrane module 9 bottoms is discharged through throttling valve 11, and the dense water of discharging through ejector 12 converges to pipeline discharges through throttling valve 11.The sea water desaltination pre-treatment of a new round is again to finish in the former process of high-pressure pump 10, and following one flow process of going round and beginning again.Not to the utmost the seawater resources to get are for the people of island, the ship of going out improve qualified domestic fresh water.
Claims (1)
1. pretreated negative pressure back-purge system of sea water desaltination, this device comprises primer pump, pipeline, check valve, more medium filter, wash water valve, super strainer, integrator, membrane module, high-pressure pump, throttling valve, ejector etc., seawater is introduced (2) by the road through primer pump (1), check valve (3) enters more medium filter (4), it is characterized in that on the pipeline on more medium filter (4) top, being connected with wash water valve (5), on the pipeline at middle part, be connected with two check valves, on the pipeline of its underpart, be connected with throttling valve (14), these three valves all are connected with container (15), be connected with air filter (16) in outlet of container portion, the pipeline that connects in the bottom of more medium filter communicates with super strainer (6), the place ahead of super strainer is provided with ejector (12) and high-pressure pump (10), is connected by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02261469U CN2578311Y (en) | 2002-11-08 | 2002-11-08 | Negative backwash device for desalination pretreatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02261469U CN2578311Y (en) | 2002-11-08 | 2002-11-08 | Negative backwash device for desalination pretreatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578311Y true CN2578311Y (en) | 2003-10-08 |
Family
ID=33728253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02261469U Expired - Fee Related CN2578311Y (en) | 2002-11-08 | 2002-11-08 | Negative backwash device for desalination pretreatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578311Y (en) |
-
2002
- 2002-11-08 CN CN02261469U patent/CN2578311Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201161955Y (en) | Mobile sea water desalting apparatus | |
| CN201010600Y (en) | Household water-saving anti-osmosis water purifier | |
| CN102774930B (en) | Portable movable ultrafiltration water purifier | |
| CN101301584B (en) | Tube-type sewage water micro-filter processing equipment | |
| CN110255737A (en) | A kind of water purifier and method with pure water displacement concentrated water | |
| CN2578311Y (en) | Negative backwash device for desalination pretreatment | |
| CN106139905B (en) | A kind of portable water purifier using low pressure nanofiltration membrane | |
| CN211141695U (en) | Little effluent disposal system of water bag machine | |
| CN210001679U (en) | Full-film micro-concentrated water nanofiltration machine | |
| CN106315767A (en) | Water purifier with function of reducing TDS (Total Dissolved Solids) value of re-yielded water | |
| CN103172190A (en) | No-pump energy-saving pure water system | |
| CN101406808A (en) | Immersion type hyperfiltration membrane technique operated in the same diaphragm cell and various membrane units | |
| CN1443713A (en) | Negative pressure back-flushing equipment for pretreatment of seawater desalination and its back-flushing method | |
| CN207243593U (en) | Water purifier | |
| CN105776621B (en) | A kind of omnipotent pure machine of filtering | |
| CN211595249U (en) | Water treatment reclaimed water recycling equipment | |
| CN104747545B (en) | Reverse osmosis system pressurizing and energy recycling device and pressurizing and energy recycling method | |
| CN210163221U (en) | Ecological environment-friendly wastewater-free water purifier | |
| CN201470154U (en) | On-line automatic backwash oil-water separation device | |
| CN106315900A (en) | Multistage filtering type water purifying equipment | |
| CN207748936U (en) | A kind of four-part form nanofiltration film condensing device | |
| CN215975087U (en) | Raw water treatment system | |
| CN203159355U (en) | Pump-free energy-saving water purification system | |
| CN201223773Y (en) | Tube-type sewage water micro-filter processing equipment | |
| CN206562358U (en) | Filter water system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |