CN114604938A - Anti-backpressure reverse osmosis water purification device - Google Patents
Anti-backpressure reverse osmosis water purification device Download PDFInfo
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- CN114604938A CN114604938A CN202210231850.7A CN202210231850A CN114604938A CN 114604938 A CN114604938 A CN 114604938A CN 202210231850 A CN202210231850 A CN 202210231850A CN 114604938 A CN114604938 A CN 114604938A
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- water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a back pressure prevention reverse osmosis water purification device which comprises a reverse osmosis device, an electric cabinet, a water inlet pipeline, a water production pipeline and a concentrated water pipeline, wherein a solenoid valve I is arranged on the water inlet pipeline, a check valve I is arranged on the water production pipeline, a flushing pipeline, a regulating valve and a concentrated water discharge port are arranged on the concentrated water pipeline, a water inlet of the flushing pipeline is positioned in front of the regulating valve, a water outlet of the flushing pipeline is positioned behind the regulating valve, a solenoid valve III is arranged on the flushing pipeline, a pressure relief pipeline is arranged between the water production pipeline and the concentrated water pipeline, a water inlet of the pressure relief pipeline is positioned in front of the check valve I of the water production pipeline, a water outlet of the pressure relief pipeline is positioned behind the regulating valve of the concentrated water pipeline, and a solenoid valve II and a check valve II are sequentially arranged on the pressure relief pipeline from the water inlet to the water outlet. Compared with the prior art, the reverse osmosis membrane water production device can effectively avoid the generation of back pressure in the reverse osmosis water production process and realize the forced flushing of the reverse osmosis membrane at any time.
Description
Technical Field
The invention belongs to water treatment equipment, and particularly relates to a back pressure prevention reverse osmosis water purification device.
Background
The reverse osmosis membrane is an artificial semipermeable membrane with certain characteristics and prepared by simulating a biological semipermeable membrane, and is a core component of a reverse osmosis water treatment technology. In the water treatment industry, a water pump is generally adopted to pressurize raw water and then inject the raw water into a filter cartridge filled with a filter membrane, under the action of pressure, part of the filtered raw water passes through the reverse osmosis membrane and is injected into a purification water tank through a water production pipe, and part of the filtered raw water is discharged through a concentrated water pipe.
Due to the special structure of the reverse osmosis membrane, the pressure of the water producing side cannot be greater than that of the water supply side during work. If the pressure of the water production side is greater than that of the water supply side, back pressure is formed, when the reverse osmosis membrane operates in a back pressure state, a bonding line inside the membrane is broken, so that the desalination rate of the membrane element is lost or obviously reduced until the membrane is damaged, and therefore, the reverse osmosis system cannot have back pressure.
At present, in the process of water purification, for the flushing of a reverse osmosis membrane, a traditional process flow mostly adopts the mode that a concentrated water pipeline is completely opened for a certain time when a machine is started, raw water is directly used for flushing a filter membrane at a large flow rate and then is discharged, but a water production pipe and the concentrated water pipe have relatively constant pressure in the operation of equipment, if an electromagnetic valve in the concentrated water pipe is suddenly opened for intensive flushing, the pressure of the concentrated water pipeline is extremely likely to drop, the pressure of the water production pipe is too high, and the back pressure of the filter membrane is damaged; for the pressure treatment of the water production pipe, the traditional process flow generally adopts the mode that the water production pipe is directly connected into a water storage tank communicated with the atmosphere so as to prevent the back pressure of the filter membrane, but the mode wastes the original water production pressure.
Disclosure of Invention
The invention aims to solve the problem of back pressure of the existing reverse osmosis water purification device and provides a reverse osmosis water purification device which can effectively improve the flushing strength of a reverse osmosis membrane and effectively prevent the generation of back pressure.
The technical scheme adopted by the invention for solving the technical problems is as follows: a reverse osmosis water purification device capable of preventing back pressure comprises a reverse osmosis device, an electric cabinet, a water inlet pipeline, a water production pipeline and a concentrated water pipeline, wherein the reverse osmosis device is provided with a raw water port, a purified water port and a concentrated water port;
the water inlet pipeline is provided with a solenoid valve I, the water production pipeline is provided with a check valve I, the concentrated water pipeline is provided with a flushing pipeline, a regulating valve and a concentrated water discharge port, the water inlet of the flushing pipeline is positioned in front of the regulating valve, the water outlet of the flushing pipeline is positioned behind the regulating valve, the flushing pipeline is provided with a solenoid valve III, a pressure relief pipeline is arranged between the water production pipeline and the concentrated water pipeline, the water inlet of the pressure relief pipeline is positioned in front of the check valve I of the water production pipeline, the water outlet of the pressure relief pipeline is positioned behind the regulating valve of the concentrated water pipeline, the pressure relief pipeline is sequentially provided with a solenoid valve II and a check valve II from the water inlet to the water outlet, and the solenoid valve II is a normally open solenoid valve;
the electromagnetic valve I, the electromagnetic valve II and the electromagnetic valve III are connected with the electric cabinet, and the electric cabinet controls the opening and closing of the electromagnetic valve I, the electromagnetic valve II and the electromagnetic valve III.
Furthermore, a water flow sensor is arranged at a concentrated water discharge port of the concentrated water pipeline, an alarm lamp is arranged on the electric cabinet, the water flow inductive switch is connected with the electric cabinet, and the electric cabinet controls the alarm lamp to be started or stopped.
The invention has the following use modes and principles:
when the device is started, the electric cabinet simultaneously opens the electromagnetic valve I, the electromagnetic valve II and the electromagnetic valve III, the regulating valve is partially opened, raw water is acted by the reverse osmosis device to form concentrated water and purified water, the concentrated water flows out from a concentrated water outlet of the reverse osmosis device and enters a concentrated water pipeline, a part of the concentrated water is discharged from a concentrated water discharge outlet through the regulating valve on the concentrated water pipeline, a part of the concentrated water enters a flushing pipeline, returns to the concentrated water pipeline through the electromagnetic valve III on the flushing pipeline and is then discharged from the concentrated water discharge outlet, and in the process, high-flow running water can be formed to realize forced flushing of the reverse osmosis device; simultaneously, because solenoid valve II is normally opened, so there is not pressure in the reverse osmosis unit membrane, can not produce the water purification generally, even produce the water purification also because solenoid valve 2 is normally opened, the water purification converges into the pressure release pipeline, then gets into dense water pipeline through solenoid valve 2 and check valve II, discharges from the dense water discharge port of dense water pipeline. When the set starting-up flushing time is reached, the electromagnetic valve II and the electromagnetic valve III are closed, the internal pressure of the reverse osmosis membrane rises, and the device starts normal water production. In the process, on one hand, due to the opening of the electromagnetic valve II and the electromagnetic valve III, the water production pipeline is communicated with the concentrated water pipeline through the pressure relief pipeline, and the flushing pipeline bypasses the regulating valve of the concentrated water pipeline, so that the concentrated water pipeline and the water production pipeline which originally have pressure are simultaneously relieved, the flushing of the reverse osmosis device is completed, and the back pressure of the water production end of the reverse osmosis device is also prevented; on the other hand, due to the addition of the electromagnetic valve and the electric cabinet, the flushing time and the flushing frequency can be freely set, the flushing effect is enhanced, even if the device is forcibly flushed at any moment, the reverse osmosis membrane back pressure cannot be caused by sudden pressure drop of a concentrated water pipeline, and the check valve II can prevent the pressure of the concentrated water pipeline from flowing back into a water production pipeline through a pressure relief pipeline during flushing to cause the reverse osmosis membrane back pressure;
when the device produces water, the size of the concentrated water discharged during the water production of the device is controlled by adjusting the regulating valve, the larger the concentrated water is, the smaller the purified water is, the smaller the concentrated water is, the larger the purified water is, when the regulating valve is fully opened, the concentrated water is completely discharged, almost no pressure exists in the reverse osmosis membrane, and the water purifying port does not produce water any more; when the opening of the regulating valve is continuously closed, the pressure in the reverse osmosis membrane cavity is suppressed, and when sufficient pressure is generated, the water making operation is started;
when the device shut down, electric cabinet control solenoid valve II is opened, will store up the water pressure in the product pipeline and pass through the leading-in dense water pipeline of pressure release pipeline and discharge from dense water discharge port, keeps reverse osmosis unit product water end zero pressure, avoids the backpressure that produces in the twinkling of an eye when shutting down, simultaneously, because solenoid valve II adopts open-now type, can be when the device outage suddenly, makes reverse osmosis membrane product water end zero pressure, effectively prevents the backpressure.
When the device is shut down, the solenoid valve II is normally open to prevent the back pressure of the water production end of the reverse osmosis membrane, if the check valve I is damaged, water in the water production pipeline flows back to the pressure relief pipeline, flows into the concentrated water pipeline through the solenoid valve II and the check valve II of the pressure relief pipeline, is discharged from the concentrated water discharge port through the water flow sensor of the concentrated water pipeline, and prevents the back pressure of the water production end of the reverse osmosis membrane; if I trouble of solenoid valve can't close or close when not tight, the thick water of raw water through reverse osmosis unit product water and pure water assemble before the water flow sensor of thick water pipeline through thick water pipeline, product water pipeline and pressure release pipeline, then discharge from thick water discharge port through water flow sensor, and the water flow sensor monitors that there is rivers to flow the back this moment, switches on the alarm lamp, makes things convenient for maintainer discovery trouble in time to handle. Simultaneously, because check valve I and water flow sensor's effect makes the device can insert the water storage device who has pressure, the produced pressure of make water of make full use of, the energy saving.
Compared with the prior art, the invention has the beneficial effects that: the invention can effectively avoid the generation of back pressure in the reverse osmosis water production process and realize the forced flushing of the reverse osmosis membrane at any time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a table of parameter data summarises under normal operating condition start-up conditions of the experimental group;
FIG. 3 is a table of parameter data summary under normal operating condition startup of a control group;
FIG. 4 is a table summarizing parameter data under a forced flushing condition in an experimental group water production process;
FIG. 5 is a table summarizing parameter data under the condition of forced flushing in the process of water production of a control group;
FIG. 6 is a table summarizing parameter data for an emergency outage situation in an experimental group;
FIG. 7 is a table summarizing parameter data for a control group in the event of a sudden power failure;
FIG. 8 is a table summarizing parameter data for a water leak condition in a check valve of an experimental group;
FIG. 9 is a table showing parameter data in case of water leakage in check valves of the control group.
Detailed Description
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
The following experiment compares the parameter changes of the water inlet pipeline pressure, the water production pipeline pressure and the concentrated water pipeline pressure of the device formed by the technical scheme in the embodiment 1 with the traditional reverse osmosis device in each running state;
the device is an experimental group, the traditional reverse osmosis device is a control group, the experiment records the pressure change of each pipeline under the conditions of starting of the experimental group and the control group under normal working conditions, forced flushing in the water production process, sudden power failure and water leakage of a check valve, the recording time is 2 days, and 3 times are recorded every day to verify the effect of preventing the reverse osmosis membrane from generating the back pressure, the recorded data is shown in figures 2-9, the experimental data can show that the reverse osmosis membrane does not generate the back pressure in each running state of the experimental group, and the reverse osmosis membrane has the risk of generating the back pressure in each running state of the control group, so the technical scheme of the invention can completely achieve the aim required to be realized by the invention.
Claims (2)
1. The utility model provides a prevent reverse osmosis purifier of backpressure, includes reverse osmosis unit (3), electric cabinet (15), water intake pipe (1), produces water pipe (13) and dense water pipeline (4), is equipped with former mouth of a river, the clean mouth of a river and dense mouth of a river on the reverse osmosis unit, its characterized in that: the raw water port of the reverse osmosis device is communicated with the water inlet pipeline, the clean water port of the reverse osmosis device is communicated with the water production pipeline, and the concentrated water port of the reverse osmosis device is communicated with the concentrated water pipeline;
the water inlet pipeline is provided with a solenoid valve I (2), the water production pipeline is provided with a check valve I (14), the concentrated water pipeline is provided with a flushing pipeline (6), a regulating valve (5) and a concentrated water discharge port (12), a water inlet of the flushing pipeline is positioned in front of the regulating valve, a water outlet of the flushing pipeline is positioned behind the regulating valve, the flushing pipeline is provided with a solenoid valve III (7), a pressure relief pipeline (10) is arranged between the water production pipeline and the concentrated water pipeline, a water inlet of the pressure relief pipeline is positioned in front of the check valve I of the water production pipeline, a water outlet of the pressure relief pipeline is positioned behind the regulating valve of the concentrated water pipeline, a solenoid valve II (8) and a check valve II (9) are sequentially arranged on the pressure relief pipeline from the water inlet to the water outlet, and the solenoid valve II is a normally open type solenoid valve;
the electromagnetic valve I, the electromagnetic valve II and the electromagnetic valve III are connected with the electric cabinet, and the electric cabinet controls the opening and closing of the electromagnetic valve I, the electromagnetic valve II and the electromagnetic valve III.
2. A back pressure resistant reverse osmosis water purification unit as claimed in claim 1, wherein: the concentrated water discharge port department of concentrated water pipeline is equipped with water flow sensor (11), is equipped with alarm lamp (16) on the electric cabinet, and rivers inductive switch is connected with the electric cabinet, and the electric cabinet control alarm lamp opens and stops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231850.7A CN114604938A (en) | 2022-03-10 | 2022-03-10 | Anti-backpressure reverse osmosis water purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231850.7A CN114604938A (en) | 2022-03-10 | 2022-03-10 | Anti-backpressure reverse osmosis water purification device |
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| Publication Number | Publication Date |
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| CN114604938A true CN114604938A (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210231850.7A Pending CN114604938A (en) | 2022-03-10 | 2022-03-10 | Anti-backpressure reverse osmosis water purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115212726A (en) * | 2022-07-22 | 2022-10-21 | 山东鲁东环保科技有限公司 | System and method for automatically analyzing and detecting internal leakage of valve of reverse osmosis system |
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2022
- 2022-03-10 CN CN202210231850.7A patent/CN114604938A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115212726A (en) * | 2022-07-22 | 2022-10-21 | 山东鲁东环保科技有限公司 | System and method for automatically analyzing and detecting internal leakage of valve of reverse osmosis system |
| CN115212726B (en) * | 2022-07-22 | 2024-04-16 | 山东鲁东环保科技有限公司 | System and method for automatically analyzing and detecting internal leakage of valve of reverse osmosis system |
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