CN210544422U - Reverse osmosis cleaning system - Google Patents
Reverse osmosis cleaning system Download PDFInfo
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- CN210544422U CN210544422U CN201920891367.5U CN201920891367U CN210544422U CN 210544422 U CN210544422 U CN 210544422U CN 201920891367 U CN201920891367 U CN 201920891367U CN 210544422 U CN210544422 U CN 210544422U
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- cleaning
- reverse osmosis
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- 238000004140 cleaning Methods 0.000 title claims abstract description 85
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000012528 membrane Substances 0.000 claims description 38
- 239000008213 purified water Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000003223 protective agent Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000002000 scavenging effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a reverse osmosis cleaning system, including wasing water tank, safety filter ware, manometer, low pressure scavenging pump, washing liquid collection water tank, pH meter, conductivity meter and washing valve. The cleaning of each level of the multistage reverse osmosis system is selectively controlled by changing the direction of the electromagnetic valve, so that the problems of waste of cleaning liquid and accumulation of pollutants at the rear end when the multistage reverse osmosis system is cleaned in sequence are avoided. The low-pressure cleaning pump is connected in parallel on the high-pressure pump pipeline, so that the problem that the resistance of the high-pressure pump needs to be overcome when the system is flushed at low pressure is solved, and the performance of the high-pressure pump is protected. The cleaning system can increase the operation stability of the multistage reverse osmosis, reduce the number of off-line cleaning and be beneficial to improving the operation stability of the whole equipment.
Description
Technical Field
The invention belongs to the field of water treatment, and particularly relates to a reverse osmosis cleaning system applying a membrane separation technology in tap water treatment and sewage treatment.
Background
At present, the membrane technology is widely applied to the field of water treatment, reverse osmosis is generally adopted as a desalting device, and a layer of pollutants can be deposited on the surface of a reverse osmosis membrane after the reverse osmosis membrane is used for a period of time, if the reverse osmosis membrane cannot be cleaned in time, the pollution and the blockage are caused, so that the performance of the reverse osmosis membrane is reduced, and the service life of the reverse osmosis membrane is influenced. The cleaning mode of the reverse osmosis membrane is divided into an online cleaning mode and an offline cleaning mode, because a large reverse osmosis system generally has a plurality of reverse osmosis membrane shells connected in series, the pollution degree of reverse osmosis is gradually increased from the front end to the rear end, the online cleaning mainly uses purified water or cleaning liquid to clean the reverse osmosis membrane sequentially from the front end to the rear end, and the impurities cleaned at the front end are gradually deposited at the rear end, so that the pollution of the reverse osmosis membrane at the rear end is more serious; and off-line cleaning needs to be carried out by detaching the reverse osmosis membrane step by step, so that the cleaning period is long, and the operation of equipment is influenced.
Before the reverse osmosis system is shut down or stopped, if the reverse osmosis system is not cleaned and protected, irreversible damage can be caused to the reverse osmosis system, and even the reverse osmosis membrane can not be reused by serious people.
Disclosure of Invention
The invention provides a reverse osmosis cleaning system which is used for overcoming the technical defects.
The reverse osmosis cleaning system comprises a cleaning water tank 6, a security filter 7, an electromagnetic switching valve 8, a pressure gauge 9, a low-pressure cleaning pump 10, a conductivity meter 11, a pH meter 12 and a cleaning liquid collecting box 13, and is characterized in that the cleaning system and a water supply system can alternately operate through the arrangement of a pipeline and the electromagnetic switching valve 8, and each stage of the multistage reverse osmosis system can be independently cleaned. A group of pressure gauges 9 and a low-pressure cleaning pump 10 are connected in parallel on the first group of high-pressure pumps 21, so that the high-pressure pumps are protected when reverse osmosis is cleaned.
The reverse osmosis cleaning system comprises a water supply system, and the water supply system consists of a water supply pipeline 1, a first group of high-pressure pumps 21, a second group of high-pressure pumps 22, a reverse osmosis membrane system 3, a total solubility solid detector 4 and a purified water tank 5.
According to the reverse osmosis cleaning system, the electromagnetic switching valve 8 automatically switches the water flow direction according to the reverse osmosis membrane differential pressure value, the differential pressure reaches a set value, and the cleaning mode is automatically started.
According to the reverse osmosis cleaning system, the cleaning water tank 6 can be filled with clean water and chemical cleaning agents to clean the reverse osmosis membrane.
The reverse osmosis cleaning system is characterized in that a security filter 7 is arranged behind a cleaning water tank 6, and a 1-micron PP cotton filter element is arranged in the security filter.
The reverse osmosis cleaning system is characterized in that a conductivity meter 11 and a pH meter 12 are arranged at a water outlet of the reverse osmosis cleaning system, and a TDS detector 4 is arranged at a pure water outlet of a water supply system.
The reverse osmosis cleaning system has the beneficial effects that the cleaning pump is the low-pressure pump, the low-pressure pump is arranged, the problem of resistance of the high-pressure pump which needs to be overcome during low-pressure cleaning of the reverse osmosis system is solved, and the performance of the high-pressure pump is maintained. Through the design of the electromagnetic switching valve, reverse osmosis can be cleaned in sections, the problems of incomplete rear-end cleaning and dilution of cleaning liquid caused by cleaning different reverse osmosis stages in sequence are avoided, and the safety and the stability of system operation are improved.
Drawings
FIG. 1 is a schematic structural diagram of a reverse osmosis cleaning system according to the present invention.
Fig. 2 is a schematic view illustrating the direction of the electromagnetic switching valve 8 according to the present invention.
Detailed Description
A reverse osmosis cleaning system comprises a cleaning water tank 6, a security filter 7, an electromagnetic switching valve 8, a pressure gauge 9, a low-pressure cleaning pump 10, a conductivity meter 11, a pH meter 12 and a cleaning liquid collecting box 13, and is characterized in that the cleaning system and a water supply system can alternately run through the conversion of a pipeline and the electromagnetic switching valve 8, the water supply time and the running time interval of the cleaning system can be set, and the multistage sectional cleaning of reverse osmosis membranes is realized. A group of pressure gauges 9 and a low-pressure cleaning pump 10 are connected in parallel on the high-pressure pump 21, so that the high-pressure pump is protected when the reverse osmosis is cleaned.
The invention comprises a water supply system: raw water enters a purified water supply pipeline 1 in sequence after being pretreated, water is purified through a first group of high-pressure pumps 21, a reverse osmosis membrane group 31, a second group of high-pressure pumps 22 and a reverse osmosis membrane group 32, the produced purified water is detected by a dissolubility total solid detector 4 and then stored in a purified water tank 5, in the water supply process, a three-way electromagnetic switching valve 81 is communicated with an AB direction, an electromagnetic two-way valve 86 is opened, water is normally produced, and other valves are closed.
The on-line sectional cleaning and water supply system of the invention is switched and operated by controlling the electromagnetic switching valve 8 and the pipeline: the electromagnetic valve 85 is opened during cleaning and closed during normal water production; the solenoid valve 86 is closed during cleaning and opened during normal water production; the specific implementation process of cleaning the reverse osmosis membrane system is as follows: when the reverse osmosis membrane group 31 needs to be cleaned, the direction of the AC of the three-way electromagnetic switching valve 81 is communicated, cleaning liquid of the cleaning water tank 6 passes through the cartridge filter 7, sequentially passes through the pressure gauge 9 and the low-pressure cleaning pump 10 and is communicated with the direction of the AC of the three-way electromagnetic switching valve 82, the cleaning liquid cleans the reverse osmosis membrane group 31 and is communicated with the direction of the BC of the three-way electromagnetic switching valve 83 and the direction of the AB of the 84, and the cleaning liquid is discharged into the cleaning liquid collecting tank 13 after being detected by the conductivity meter 11; when the cleaning liquid is used to clean the reverse osmosis membrane module 32, the AC direction of the three-way electromagnetic switching valve 81, the AB direction of the three-way electromagnetic switching valves 82 and 83, and the AC direction of the three-way electromagnetic switching valve 84 are communicated to clean the reverse osmosis membrane module 32.
After cleaning, if the equipment is shut down for a long time, the membrane protective agent needs to be added to communicate the AC direction of the electromagnetic three-way switching valve 81 and the AC directions of the AC direction of the three-way electromagnetic switching valve 82 and the BC direction of the 83 and the AC direction of the 84, membrane protection is injected into the reverse osmosis membrane groups 31 and 32, the electromagnetic valve 85 is opened, and redundant membrane protective agent is discharged to the cleaning liquid collecting tank 13, so that the stability of the reverse osmosis membrane is ensured.
The cleaning water tank can be filled with clean water to physically flush the reverse osmosis membrane, and also can be added with chemical cleaning liquid such as acidic or alkaline cleaning agent, and the change of the numerical values of the cleaning liquid and the liquid in the cleaning water tank is detected by the conductivity meter 11 and the pH meter 12, so as to ensure the cleaning effect of the reverse osmosis membrane.
The arrows in the figure indicate the direction of the water flow.
The reverse osmosis cleaning system is simple in structure, convenient to adjust and remarkable in cleaning effect. The reverse osmosis membrane can be cleaned on line in a grading way, and the service life of the reverse osmosis membrane is prolonged.
The reverse osmosis cleaning system of the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can derive other embodiments according to the technical solution of the present invention, which also falls within the technical innovation scope of the present invention.
Claims (5)
1. A reverse osmosis cleaning system comprises a cleaning water tank (6), a security filter (7), an electromagnetic switching valve (8), a pressure gauge (9), a low-pressure cleaning pump (10), a conductivity meter (11), a pH meter (12) and a cleaning liquid collecting box (13), and is characterized in that the cleaning system and a water supply system can alternately operate by changing a pipeline and the electromagnetic switching valve (8), and the cleaning of each stage of multi-stage reverse osmosis can be selectively controlled; a group of pressure gauges (9) and a low-pressure cleaning pump (10) are connected in parallel on the first group of high-pressure pumps (21), so that the first group of high-pressure pumps (21) and the second group of high-pressure pumps (22) are protected during reverse osmosis cleaning; the water supply system comprises a water supply pipeline (1), a first group of high-pressure pumps (21), a second group of high-pressure pumps (22), a reverse osmosis membrane system (3), a total solubility solid detector (4) and a water purification tank (5).
2. A reverse osmosis cleaning system according to claim 1 wherein the electromagnetic switch valve (8) is automatically switched to change the direction of water flow based on the pressure differential across the reverse osmosis membrane, and the pressure differential reaches a set value to automatically enter the cleaning mode.
3. A reverse osmosis cleaning system according to claim 1 wherein the cleaning tank (6) is filled with clean water and chemical cleaning agents to clean the reverse osmosis membrane and is filled with membrane protective agents to protect the performance of the reverse osmosis membrane when the water supply system is shut down for an extended period of time.
4. A reverse osmosis cleaning system according to claim 1, wherein a cartridge filter (7) is installed after the cleaning water tank (6), and a 1 μm PP cotton filter element is installed in the cartridge filter.
5. A reverse osmosis cleaning system according to claim 1, wherein a conductivity meter (11) and a pH meter (12) are arranged at the water outlet of the reverse osmosis cleaning system to detect the cleaning effect, and a dissolubility total solid detector (4) is arranged at the water outlet of the water supply system to comprehensively evaluate the quality of the purified water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920891367.5U CN210544422U (en) | 2019-06-14 | 2019-06-14 | Reverse osmosis cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920891367.5U CN210544422U (en) | 2019-06-14 | 2019-06-14 | Reverse osmosis cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210544422U true CN210544422U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920891367.5U Active CN210544422U (en) | 2019-06-14 | 2019-06-14 | Reverse osmosis cleaning system |
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| Country | Link |
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| CN (1) | CN210544422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470589A (en) * | 2020-05-28 | 2020-07-31 | 佛山市顺德区美的饮水机制造有限公司 | Water purifying device and cleaning method thereof |
-
2019
- 2019-06-14 CN CN201920891367.5U patent/CN210544422U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470589A (en) * | 2020-05-28 | 2020-07-31 | 佛山市顺德区美的饮水机制造有限公司 | Water purifying device and cleaning method thereof |
| CN111470589B (en) * | 2020-05-28 | 2024-01-16 | 佛山市顺德区美的饮水机制造有限公司 | Water purifying device and cleaning method of water purifying device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A reverse osmosis cleaning system Effective date of registration: 20220801 Granted publication date: 20200519 Pledgee: Bank of China Limited Xilinhot branch Pledgor: Inner Mongolia Shengqing Technology Co.,Ltd. Registration number: Y2022150000080 |