CN209791306U - Off-line cleaning device for nanofiltration membrane - Google Patents
Off-line cleaning device for nanofiltration membrane Download PDFInfo
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- CN209791306U CN209791306U CN201920076108.7U CN201920076108U CN209791306U CN 209791306 U CN209791306 U CN 209791306U CN 201920076108 U CN201920076108 U CN 201920076108U CN 209791306 U CN209791306 U CN 209791306U
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Abstract
The utility model discloses a nanofiltration membrane off-line cleaning device, which belongs to the field of cleaning devices and comprises a cleaning water tank, an acid and alkali resistant pump, a membrane cleaning cylinder, a float flowmeter, a pipeline assembly and a valve assembly; the cleaning water tank sequentially comprises a desalting water tank, an acid washing agent tank and an alkaline agent tank; the pipeline assembly comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline which are connected with each other; the acid and alkali resistant pump is connected with the lower ports of the desalting water tank, the pickling agent tank and the alkaline agent tank in sequence on the first pipeline; and the first pipeline is provided with an eighth valve for controlling the total water inlets of the desalting water tank, the pickling agent tank and the alkaline agent tank. The utility model discloses a receive filter membrane off-line belt cleaning device reduces the acid and alkali resistant pump maintenance time, and positive and negative washing can be realized simultaneously to reduce cost, and simple structure, low cost, and the maintenance is simple, and convenient operation is convenient and practical's membrane element off-line belt cleaning device.
Description
Technical Field
The utility model relates to a belt cleaning device field especially relates to a receive filter membrane off-line belt cleaning device.
background
in general industrial water or treatment technology, the treatment method of the nanofiltration membrane and the reverse osmosis membrane is widely applied. However, after the membrane element normally operates for a period of time, the membrane element is polluted by suspended matters, indissolvable substances and water treatment agents possibly existing in water supply, so that the water yield of a membrane treatment system is reduced, the conductivity is increased, and the normal operation of the device is influenced. Therefore, effective solutions to solve the above problems need to be proposed.
disclosure of Invention
in order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a nanofiltration membrane off-line cleaning device, wherein concentrated water and produced water passing through a membrane element return to a cleaning water tank after passing through a float flowmeter, a fifth pipeline and a sixth pipeline are arranged, the direction of cleaning liquid is controlled by adjusting a twelfth valve and a sixteenth valve component, so that positive and negative flushing is realized, and after cleaning is finished, the water permeability of the cleaned membrane can be detected, and the membrane is ensured to be cleaned; meanwhile, the maintenance time of the acid and alkali resistant pump is reduced, the cost is reduced, forward and reverse cleaning can be realized, the structure is simple, the cost is low, the maintenance is simple, the operation is convenient, and the membrane element off-line cleaning device is convenient and practical.
to achieve the purpose, the utility model adopts the following technical proposal:
The utility model provides a nanofiltration membrane off-line cleaning device, which comprises three cleaning water tanks, an acid and alkali resistant pump, a membrane cleaning cylinder, a float flowmeter, a pipeline assembly and a valve assembly which are arranged in parallel;
the cleaning water tank sequentially comprises a desalting water tank, an acid washing agent tank and an alkaline agent tank;
the pipeline assembly comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline which are connected with each other;
the acid and alkali resistant pump is connected with the desalting water tank, the acid washing agent tank and the lower port of the alkali agent tank in sequence on the first pipeline;
The first pipeline is provided with an eighth valve for controlling the total water inlets of the desalting water tank, the pickling agent tank and the alkaline agent tank;
the bottom ends of the desalting water tank, the pickling agent tank and the alkaline agent tank and the first pipeline are sequentially provided with a first valve, a fifth valve and a seventh valve in a bypass mode;
a ninth valve and a tenth valve for controlling a rear main water inlet of the acid and alkali resistant pump are arranged on the first pipeline and on one side of the outlet end of the acid and alkali resistant pump;
The first upper ports of the acid washing agent tank and the alkaline agent tank are connected with the first port of the membrane cleaning cylinder body through the second pipeline; second upper ports of the acid washing agent tank and the alkaline agent tank are connected with a second port of the membrane cleaning cylinder body through the third pipeline; a third port of the membrane cleaning cylinder is connected with a first pipeline at the outlet end of the acid-base resistant pump through a fourth pipeline;
The membrane cleaning cylinders are two in number and are arranged in parallel, an eleventh valve and a thirteenth valve are respectively arranged on the fourth pipeline, a fourteenth valve and a seventeenth valve are respectively arranged on the second pipeline corresponding to each first port, and a fifteenth valve and an eighteenth valve are respectively arranged on the third pipeline corresponding to each second port;
a third valve and a fourth valve which are communicated with the pickling agent tank and the alkaline agent tank are sequentially arranged on the first port of the membrane cleaning cylinder;
A second valve and a sixth valve which are communicated with the pickling agent tank and the alkaline agent tank are sequentially arranged on a second port of the membrane cleaning cylinder;
A twentieth valve and a twenty-first valve which are arranged in parallel are arranged on the second pipeline and at the outlet end of the fourteenth valve;
a nineteenth valve and a twelfth valve are arranged on the third pipeline and are positioned at the outlet end of the fifteenth valve in series;
one end of the fifth pipeline is connected with the outlet end of the tenth valve, and the other end of the fifth pipeline is connected with the outlet end of the nineteenth valve; a twelfth valve is arranged on the fifth pipeline;
One end of the sixth pipeline is connected with the outlet end of the ninth valve, and the other end of the sixth pipeline is connected with the inlet end of the nineteenth valve.
preferably, a pressure gauge is arranged on the first pipeline and between the acid-base resistant pump and the ninth valve.
Preferably, the desalting water tank, the pickling agent tank and the alkaline agent tank are provided with liquid level meters.
Preferably, the float flow meter is disposed in part at the outlet ends of the twentieth valve, the twenty-first valve, and the twenty-second valve.
Preferably, a thirteenth valve for controlling the discharge of the produced water is arranged on the second pipeline and at the outlet end of the float flowmeter; and a twenty-fourth valve for controlling the discharge of the concentrated water is arranged on the third pipeline and at the outlet end of the float flowmeter.
preferably, the ninth valve is a plate gate valve.
preferably, a twenty-fifth valve for discharging the collecting liquid in the desalting water tank, the pickling agent tank and the alkaline agent tank to the outside is arranged on the first pipeline in a bypass manner.
the utility model has the advantages that:
The utility model provides a receive filter membrane off-line belt cleaning device, the dense water through the membrane element with produce the water and get back to the washing water pitcher after through the float flowmeter, have the setting of fifth pipeline, sixth pipeline and control the washing liquid direction through adjusting twelfth valve and sixteenth valve member, realize positive and negative washing, after wasing, can carry out the water permeability to the membrane after washing and detect, ensure that the membrane has been washd totally; meanwhile, the maintenance time of the acid and alkali resistant pump is reduced, the cost is reduced, forward and reverse cleaning can be realized, the structure is simple, the cost is low, the maintenance is simple, the operation is convenient, and the membrane element off-line cleaning device is convenient and practical.
drawings
Fig. 1 is a schematic view of a nanofiltration membrane off-line cleaning device according to an embodiment of the present invention.
In the figure:
1. a first valve; 2. a second valve; 3. a third valve; 4. a fourth valve; 5. a fifth valve; 6. a sixth valve; 7. a seventh valve; 8. an eighth valve; 9. a ninth valve; 10. a tenth valve; 11. an eleventh valve; 12. a twelfth valve; 13. a thirteenth valve; 14. a fourteenth valve; 15. a fifteenth valve; 16. a sixteenth valve; 17. a seventeenth valve; 18. an eighteenth valve; 19. a nineteenth valve; 20. a twentieth valve; 21. a twenty-first valve; 22. a second twelve-valve; 23. a twenty-third valve; 24. a twenty-fourth valve; 25. a twenty-fifth valve; 26. cleaning the water tank; 27. a desalting water tank; 28. a pickling agent tank; 29. an alkaline agent tank; 30. an acid and alkali resistant pump; 31. a membrane cleaning cylinder; 32. a float flow meter; 33. a pressure gauge; 100. a tubing assembly; 101. a first pipeline; 102. a second pipeline; 103. a third pipeline; 104. a fourth pipeline; 105. a fifth pipeline; 106. a sixth pipeline; 311. a first port; 312. a second port; 313. a third port.
Detailed Description
the technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
as shown in fig. 1, an off-line cleaning device for nanofiltration membrane comprises three cleaning water tanks 26, an acid and alkali resistant pump 30, a membrane cleaning cylinder 31, a float flowmeter 32, a pipeline assembly 100 and a valve assembly, which are arranged in parallel; the cleaning water tank 26 includes a demineralized water tank 27, an acid washing agent tank 28, and an alkaline agent tank 29 in this order; the pipeline assembly 100 comprises a first pipeline 101, a second pipeline 102, a third pipeline 103, a fourth pipeline 104, a fifth pipeline 105 and a sixth pipeline 106 which are connected with each other; the first pipe 101 connects the acid and alkali resistant pump 30 to the lower ports of the demineralized water tank 27, the acid and alkali resistant tank 28, and the alkali resistant tank 29 in this order; the eighth valve 8 is arranged on the first pipeline 101 and is used for controlling the total water inlets of the desalting water tank 27, the pickling agent tank 28 and the alkaline agent tank 29; the bottom ends of the desalting water tank 27, the pickling agent tank 28 and the alkaline agent tank 29 and the first pipeline 101 are sequentially provided with a first valve 1, a fifth valve 5 and a seventh valve 7 in a bypass mode; a ninth valve 9 and a tenth valve 10 for controlling a rear main water inlet of the acid and alkali resistant pump 30 are arranged on the first pipeline 101 and at one side of the outlet end of the acid and alkali resistant pump 30; the first upper ports of the acid washing agent tank 28 and the alkaline agent tank 29 are connected with the first port 311 of the membrane cleaning cylinder 31 through the second pipeline 102; second upper ports of the acid washing agent tank 28 and the alkaline agent tank 29 are connected to a second port 312 of the membrane cleaning cylinder 31 through a third pipe 103; the third port 313 of the membrane cleaning cylinder 31 is connected with the first pipeline 101 at the outlet end of the acid-base resistant pump 30 through the fourth pipeline 104; the number of the membrane cleaning cylinders 31 is two, and the membrane cleaning cylinders are arranged in parallel, the fourth pipeline 104 is respectively provided with an eleventh valve 11 and a thirteenth valve 13, the second pipeline 102 corresponding to each first port 311 is respectively provided with a fourteenth valve 14 and a seventeenth valve 17, and the third pipeline 103 corresponding to each second port 312 is respectively provided with a fifteenth valve 15 and an eighteenth valve 18; the first port 311 of the membrane cleaning cylinder 31 is sequentially communicated with the third valve 3 and the fourth valve 4 on the pickling agent tank 28 and the alkaline agent tank 29; the second valve 2 and the sixth valve 6 are sequentially communicated with the acid washing agent tank 28 and the alkaline agent tank 29 on the second port 312 of the membrane cleaning cylinder 31; a twentieth valve 20 and a twenty-first valve 21 which are arranged in parallel are arranged on the second pipeline 102 and positioned at the outlet end of the fourteenth valve 14; a nineteenth valve 19 and a twentieth valve 22 are arranged on the third pipeline 103 and are positioned at the outlet end of the fifteenth valve 15 in series; one end of the fifth pipeline 105 is connected with the outlet end of the tenth valve 10, and the other end of the fifth pipeline 105 is connected with the outlet end of the nineteenth valve 19; a twelfth valve 12 is arranged on the fifth pipeline 105; one end of the sixth pipeline 106 is connected with the outlet end of the ninth valve 9, and the other end of the sixth pipeline 106 is connected with the inlet end of the nineteenth valve 19.
Above implementation, specifically, at first for easy installation, transportation, above-mentioned washing water tank 26, acid and alkali resistant pump 30, membrane wash barrel 31, float flowmeter 32, pipeline subassembly 100 and valve subassembly are installed on the frame of aluminum alloy system, and the whole skid-mounted form that adopts of device to realized being convenient for install, the migration of being convenient for: the production and the assembly of the skid-mounted equipment are finished in a factory, the field installation workload is less, and the operation can be realized only by finishing the connection of the interface pipeline and external electrical connection; the functional components are integrated on the whole base, so that the functional components can be conveniently and integrally moved; the skid-mounted type design is compact, and the occupied area is small: the skid-mounted equipment has a compact structure, occupies less land for installation compared with the traditional installation mode, and is integrally fixed on the hardened ground through expansion screws; in addition, the acid and alkali resistant pump 30 is connected with the lower ends of the desalting water tank 27, the acid washing agent tank 28 and the alkali agent tank 29 through DN50 stainless steel pipelines; the specific valve functions are described in sequence as follows: the purpose of the first valve 1 is to control the inlet of the demineralization water tank 27; the purpose of the second valve 2 is to control the produced water to return to the water return port of the acidic medicament tank 28; the purpose of the third valve 3 is to control the water return opening of the concentrated water acid-returning medicament tank 28; the purpose of the fourth valve 4 is to control the concentrated water to return to the water return port of the alkaline medicament tank 29; the purpose of the fifth valve 5 is to control the inlet of the alkaline agent tank 29; the purpose of the sixth valve 6 is to control the produced water to return to the water return port of the alkaline medicament tank 29; the purpose of the seventh valve 7 is to control the inlet of the alkaline agent tank 29; the purpose of the eighth valve 8 is to control the front main water inlet of the acid and alkali resistant pump 30; the purpose of the ninth valve 9 is to control the rear main water inlet of the acid and alkali resistant pump 30; the purpose of the tenth valve 10, the twelfth valve 12, the sixteenth valve 16 and the nineteenth valve 19 is to control the forward and reverse wash switching; the eleventh valve 11, the thirteenth valve 13, the fifteenth valve 15 and the eighteenth valve 18 are used for controlling the opening and closing of the medicament of the membrane cleaning cylinder 31 and the inlet and the outlet of the demineralized water tank 27; the purpose of the fourteenth valve 14 and the seventeenth valve 17 is to control the water outlet of the membrane cleaning cylinder 31; the purpose of the twentieth valve 20 is to control the on-off of a small flow meter of produced water behind the valve; the twenty-first valve 21 aims at controlling the switch of the water producing mass flow meter behind the valve; the purpose of the twentieth valve 22 is to control the opening and closing of the concentrate mass flow meter behind the valve.
Description of specific work: taking alkaline agent cleaning and post-cleaning water flushing as an example, firstly, the normal cleaning is flushed by the demineralized water, and the tenth valve 10, the eleventh valve 11, the thirteenth valve 13, the fourteenth valve 14, the fifteenth valve 15, the seventeenth valve 17, the eighteenth valve 18, the nineteenth valve 19, the twenty-first valve 21, the twenty-second valve 22, the twenty-third valve 23 and the twenty-fourth valve 24 are opened; and then, completely opening the first valve 1 and the eighth valve 8, simultaneously opening the acid and alkali resistant pump 30, slowly opening the ninth valve 9, controlling the water flushing pressure by adjusting the opening degree of the ninth valve 9, flushing the produced water by the desalted water through the membrane cleaning cylinder 31, discharging the produced water and the concentrated water through the twenty-third valve 23 and the twenty-fourth valve 24, controlling the concentrated water flow through the twenty-first valve 21, monitoring the flow of the concentrated water or the produced water through the float flowmeter 32, and sampling and monitoring the water production conductance through the twenty-third valve 23.
Alkaline agent washing: opening valves tenth, eleventh, thirteenth, fourteenth, fifteenth, seventeenth, eighteenth, nineteenth, twenty-first, twenty-second, twenty-third, 23, and twenty-fourth valves 10, 11, 13, 14, 15, 17; and then, fully opening a seventh valve 7, an eighth valve 8, a fourth valve 4 and a sixth valve 6, starting an acid and alkali resistant pump 30, slowly opening a ninth valve 9, controlling the alkaline washing pressure by adjusting the opening degree of the ninth valve 9, monitoring the flow of alkaline washing produced water and concentrated water through a float flowmeter 32, controlling the flow of concentrated water through a twenty-first valve 21, and monitoring the flow of concentrated water produced water through the float flowmeter 32.
backwashing switching: the twelfth valve 12 and the sixteenth valve 16 are fully opened in the first step, the tenth valve 10 and the nineteenth valve 19 are fully closed in the second step, cleaning liquid is filled into the membrane cleaning cylinder 31 through the acid and alkali resistant pump 30, dirt and impurities in the membrane elements are dissolved and carried out through chemical action in the membrane cleaning cylinder 31 after cleaning is finished, the twenty-fifth valve 25 at the lowest point of the desalting water tank 27, the pickling agent tank 28 and the alkaline agent tank 29 is opened, and cleaning waste liquid is discharged.
It should be noted that, due to the corrosive effect of the acidic cleaning agent and the alkaline cleaning agent on the equipment, all the parts involved are made of stainless steel in order to ensure the long, stable, full and excellent operation of the equipment.
In summary, the concentrate and produced water passing through the membrane elements are returned to the wash water tank 26 after passing through the float flow meter 32,
the device is provided with a fifth pipeline 105 and a sixth pipeline 106, the direction of cleaning liquid is controlled by adjusting the twelfth valve 12 and the sixteenth valve 16 component, so that positive and negative flushing is realized, and after cleaning is finished, the water permeability of the cleaned membrane can be detected, so that the membrane is ensured to be cleaned; meanwhile, the maintenance time of the acid and alkali resistant pump 30 is reduced, the cost is reduced, forward and reverse cleaning can be realized, the structure is simple, the cost is low, the maintenance is simple, the operation is convenient, and the membrane element off-line cleaning device is convenient and practical.
Further, a pressure gauge 33 is disposed on the first pipeline 101 and between the acid and alkali resistant pump 30 and the ninth valve 9, so as to facilitate visual monitoring of the cleaning condition on the pipeline.
furthermore, level gauges are arranged on the demineralized water tank 27, the pickling agent tank 28 and the alkaline agent tank 29, so that the liquid level heights in the demineralized water tank 27, the pickling agent tank 28 and the alkaline agent tank 29 can be conveniently monitored.
further, the float flowmeter 32 is disposed at the outlet ends of the twentieth valve 20, the twenty-first valve 21 and the twentieth valve 22, and is capable of visually indicating the flow rate value on the pipeline.
Further, a twenty-third valve 23 for controlling the discharge of the produced water is arranged on the second pipeline 102 and at the outlet end of the float flowmeter 32; a twenty-fourth valve 24 for controlling the discharge of the concentrated water is arranged on the third pipeline 103 and at the outlet end of the float flowmeter 32, the twenty-third valve 23 is used for discharging the produced water at the first port 311 in the membrane cleaning cylinder 31 after being opened, and the twenty-fourth valve 24 is used for discharging the concentrated water at the second port in the membrane cleaning cylinder 31 by controlling the twenty-fourth valve 24 to be opened.
further, the ninth valve 9 is a flat gate valve, specifically, the ninth valve 9 controls a total water inlet behind the acid and alkali resistant pump 30, and adopts a flat gate valve, which has high bearing capacity, a straight-through channel, is similar to a straight pipe as a guide hole of the flat gate valve is communicated with the guide hole when being fully opened, the flow resistance is very small, and the valve rod adopts composite packing and multiple sealing, so that the sealing is reliable and the friction force is small.
Furthermore, the twenty-fifth valve 25 for discharging the collected liquids in the desalting water tank 27, the pickling agent tank 28 and the alkaline agent tank 29 is disposed by-passing the first pipeline 101, so that the collected liquids in the desalting water tank 27, the pickling agent tank 28 and the alkaline agent tank 29 can be collectively discharged through the twenty-fifth valve 25.
while the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (7)
1. the utility model provides a receive filter membrane off-line belt cleaning device which characterized in that:
Comprises three cleaning water tanks (26), an acid and alkali resistant pump (30), a membrane cleaning cylinder body (31), a float flowmeter (32), a pipeline assembly (100) and a valve assembly which are arranged in parallel;
The cleaning water tank (26) sequentially comprises a desalting water tank (27), an acid washing agent tank (28) and an alkaline agent tank (29);
the pipeline assembly (100) comprises a first pipeline (101), a second pipeline (102), a third pipeline (103), a fourth pipeline (104), a fifth pipeline (105) and a sixth pipeline (106) which are connected with each other;
the first pipeline (101) is connected with the acid and alkali resistant pump (30) in sequence to the lower ports of the desalting water tank (27), the acid washing agent tank (28) and the alkali agent tank (29);
The first pipeline (101) is provided with an eighth valve (8) for controlling the total water inlets of the desalting water tank (27), the pickling agent tank (28) and the alkaline agent tank (29);
the bottom ends of the desalting water tank (27), the pickling agent tank (28) and the alkaline agent tank (29) and the first pipeline (101) are sequentially provided with a first valve (1), a fifth valve (5) and a seventh valve (7) in a bypass mode;
A ninth valve (9) and a tenth valve (10) which are arranged on the first pipeline (101) and are positioned at one side of the outlet end of the acid-base resistant pump (30) and are used for controlling a rear main water inlet of the acid-base resistant pump (30);
the first upper ports of the acid washing agent tank (28) and the alkaline agent tank (29) are connected with the first port (311) of the membrane cleaning cylinder (31) through the second pipeline (102); second upper ports of the acid washing agent tank (28) and the alkaline agent tank (29) are connected with a second port (312) of the membrane cleaning cylinder (31) through the third pipeline (103); the third port (313) of the membrane cleaning cylinder (31) is connected with the first pipeline (101) at the outlet end of the acid-base resistant pump (30) through a fourth pipeline (104);
The number of the membrane cleaning cylinder bodies (31) is two, the membrane cleaning cylinder bodies are arranged in parallel, an eleventh valve (11) and a thirteenth valve (13) are respectively arranged on the fourth pipeline (104), a fourteenth valve (14) and a seventeenth valve (17) are respectively arranged on the second pipeline (102) corresponding to each first port (311), and a fifteenth valve (15) and an eighteenth valve (18) are respectively arranged on the third pipeline (103) corresponding to each second port (312);
a third valve (3) and a fourth valve (4) which are communicated with the pickling agent tank (28) and the alkaline agent tank (29) in sequence are arranged on a first port (311) of the membrane cleaning cylinder body (31);
A second valve (2) and a sixth valve (6) which are communicated with the pickling agent tank (28) and the alkaline agent tank (29) in sequence are arranged on a second port (312) of the membrane cleaning cylinder body (31);
A twentieth valve (20) and a twenty-first valve (21) which are arranged in parallel are arranged on the second pipeline (102) and are positioned at the outlet end of the fourteenth valve (14);
a nineteenth valve (19) and a twelfth valve (22) are arranged on the third pipeline (103) in series at the outlet end of the fifteenth valve (15);
One end of the fifth pipeline (105) is connected with the outlet end of the tenth valve (10), and the other end of the fifth pipeline (105) is connected with the outlet end of the nineteenth valve (19); a twelfth valve (12) is arranged on the fifth pipeline (105);
One end of the sixth pipeline (106) is connected with the outlet end of the ninth valve (9), and the other end of the sixth pipeline (106) is connected with the inlet end of the nineteenth valve (19).
2. the nanofiltration membrane off-line cleaning device of claim 1, wherein:
And a pressure gauge (33) is arranged on the first pipeline (101) and between the acid-base resistant pump (30) and the ninth valve (9).
3. the nanofiltration membrane off-line cleaning device of claim 1, wherein:
The desalting water tank (27), the pickling agent tank (28) and the alkaline agent tank (29) are provided with liquid level meters.
4. The nanofiltration membrane off-line cleaning device of claim 1, wherein:
the float flowmeter (32) is distributed at the outlet ends of the twentieth valve (20), the twenty-first valve (21) and the twenty-second valve (22).
5. The nanofiltration membrane off-line cleaning device of claim 1, wherein:
A thirteenth and twenty-third valve (23) for controlling the discharge of produced water is arranged on the second pipeline (102) and at the outlet end of the float flowmeter (32);
and a twenty-fourth valve (24) for controlling the discharge of concentrated water is arranged on the third pipeline (103) and at the outlet end of the float flowmeter (32).
6. The nanofiltration membrane off-line cleaning device of claim 1, wherein:
and the ninth valve (9) is a flat gate valve.
7. The nanofiltration membrane off-line cleaning device of claim 1, wherein:
and a twenty-fifth valve (25) for discharging the collected liquid in the desalting water tank (27), the pickling agent tank (28) and the alkaline agent tank (29) outwards is arranged on the first pipeline (101) in a bypass mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920076108.7U CN209791306U (en) | 2019-01-17 | 2019-01-17 | Off-line cleaning device for nanofiltration membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920076108.7U CN209791306U (en) | 2019-01-17 | 2019-01-17 | Off-line cleaning device for nanofiltration membrane |
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| CN201920076108.7U Active CN209791306U (en) | 2019-01-17 | 2019-01-17 | Off-line cleaning device for nanofiltration membrane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429029A (en) * | 2021-08-09 | 2021-09-24 | 安徽普朗膜技术有限公司 | Intelligent continuous high-efficiency hard-removing and silicon-removing reactor treatment system |
| CN114749026A (en) * | 2021-01-08 | 2022-07-15 | 国家能源投资集团有限责任公司 | Offline cleaning system and offline cleaning method for water treatment membrane |
-
2019
- 2019-01-17 CN CN201920076108.7U patent/CN209791306U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749026A (en) * | 2021-01-08 | 2022-07-15 | 国家能源投资集团有限责任公司 | Offline cleaning system and offline cleaning method for water treatment membrane |
| CN113429029A (en) * | 2021-08-09 | 2021-09-24 | 安徽普朗膜技术有限公司 | Intelligent continuous high-efficiency hard-removing and silicon-removing reactor treatment system |
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