CN216191510U - Water treatment system for preventing membrane scaling - Google Patents
Water treatment system for preventing membrane scaling Download PDFInfo
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- CN216191510U CN216191510U CN202122940685.6U CN202122940685U CN216191510U CN 216191510 U CN216191510 U CN 216191510U CN 202122940685 U CN202122940685 U CN 202122940685U CN 216191510 U CN216191510 U CN 216191510U
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Abstract
The utility model provides a water treatment system for preventing membrane scaling, which comprises a security filter, a first electromagnetic valve, a high-pressure pump, an RO (reverse osmosis) device, a pure water tank, a second electromagnetic valve, a cleaning pump, a normally closed electromagnetic relay, a normally open electromagnetic relay and a PLC (programmable logic controller), wherein the security filter, the high-pressure pump, the RO device, the pure water tank and the cleaning pump are sequentially connected through a pipeline, a water outlet of the cleaning pump is connected with a water inlet of the high-pressure pump through a pipeline, the first electromagnetic valve is arranged on the pipeline between the security filter and the high-pressure pump, the second electromagnetic valve is arranged on the pipeline communicating the water outlet of the cleaning pump and the water inlet of the high-pressure pump, a concentrated water outlet of the RO device is connected with a water outlet pipe, and the water outlet pipe is provided with a drain valve. Due to the adoption of the technical scheme, the utility model can prevent the scale on the membrane surface of the reverse osmosis membrane.
Description
Technical Field
The utility model belongs to the technical field of water treatment, and particularly relates to a water treatment system for preventing membrane scaling.
Background
In a conventional reverse osmosis pure water plant design, in order to prevent scaling of reverse osmosis membranes, a scale inhibitor is generally added to raw water in a pretreatment stage to prevent formation of inorganic scale substances on reverse osmosis membrane surfaces. However, the process of adding the scale inhibitor to raw water is not suitable for the food and beverage industry or the medical industry.
SUMMERY OF THE UTILITY MODEL
In view of the above technical problems of the prior art, the present invention provides a water treatment system for preventing membrane fouling.
The utility model aims to realize the purpose by the technical scheme, which comprises a security filter, a first electromagnetic valve, a high-pressure pump, an RO reverse osmosis device, a pure water tank, a second electromagnetic valve, a cleaning pump, a normally closed electromagnetic relay, a normally open electromagnetic relay and a PLC (programmable logic controller), wherein the water outlet of the security filter is connected with the water inlet of the high-pressure pump through a first pipeline, the water outlet of the high-pressure pump is connected with the water inlet of the RO reverse osmosis device through a second pipeline, the pure water outlet of the RO reverse osmosis device is connected with the water inlet of the pure water tank through a third pipeline, the water outlet of the pure water tank is connected with the water inlet of the cleaning pump through a fourth pipeline, the water outlet of the cleaning pump is communicated with the water inlet of the high-pressure pump through a fifth pipeline, the first electromagnetic valve is arranged on the first pipeline, the second electromagnetic valve is arranged on the fifth pipeline, and the concentrated water outlet of the RO reverse osmosis device is connected with a water outlet pipe, the water outlet pipe is provided with a drain valve, the first electromagnetic valve, the second electromagnetic valve, the normally closed electromagnetic relay and the normally open electromagnetic relay are electrically connected with the PLC, the high-pressure pump is electrically connected with the normally closed electromagnetic relay, and the cleaning pump is electrically connected with the normally open electromagnetic relay.
Furthermore, the outlet pipe is connected with a branch pipe, one end of the branch pipe is connected to the part of the outlet pipe, which is located between the concentrated water outlet of the RO reverse osmosis device and the drain valve, the branch pipe is provided with a third electromagnetic valve, and the third electromagnetic valve is electrically connected with the PLC.
Furthermore, a first slow-closing check valve is arranged on the second pipeline, and water supplied by the first slow-closing check valve flows to the RO reverse osmosis device from the high-pressure pump.
Furthermore, a second slow-closing check valve is arranged on the fifth pipeline, and water supplied by the second slow-closing check valve flows from the cleaning pump to the high-pressure pump.
Due to the adoption of the technical scheme, the utility model has the beneficial effects that:
the PLC controller repeatedly controls the first electromagnetic valve, the second electromagnetic valve, the normally closed electromagnetic relay and the normally open electromagnetic relay to be powered on and off, the water treatment system for preventing the membrane from scaling can repeatedly and alternately circulate between a pure water making state and a pure water flushing and replacing state, after pure water is made for a certain time, concentrated water in the RO reverse osmosis device can be flushed and replaced, compact inorganic scale can be prevented from being formed on the membrane surface of the reverse osmosis membrane of the RO reverse osmosis device, and the membrane can be effectively prevented from scaling. When the water treatment system for preventing the membrane from scaling is adopted to prepare pure water, a scale inhibitor is not required to be added into raw water, and the system is very suitable for being used in the food and beverage industry or the medical industry.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of a water treatment system for preventing fouling of membranes according to the present invention;
FIG. 2 is a schematic diagram of another preferred embodiment of a system for water treatment to prevent fouling of membranes according to the present invention.
In the figure, 1, a cartridge filter; 2. a first solenoid valve; 3. a high pressure pump; 4. an RO reverse osmosis unit; 5. a pure water tank; 6. a second solenoid valve; 7. cleaning the pump; 8. a first conduit; 9. a second conduit; 10. a third pipeline; 11. a fourth conduit; 12. a fifth pipeline; 13. a water outlet pipe; 14. a drain valve; 15. a branch pipe; 16. a third electromagnetic valve; 17. a first slow-closing check valve; 18. a second slow-closing check valve.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained below by combining the specific drawings.
As shown in FIG. 1, the present invention comprises a security filter 1, a first electromagnetic valve 2, a high pressure pump 3, an RO reverse osmosis device 4, a pure water tank 5, a second electromagnetic valve 6, a cleaning pump 7, a normally closed electromagnetic relay, a normally open electromagnetic relay and a PLC controller, wherein the water outlet of the security filter 1 is connected with the water inlet of the high pressure pump 3 through a first pipeline 8, the water outlet of the high pressure pump 3 is connected with the water inlet of the RO reverse osmosis device 4 through a second pipeline 9, the pure water outlet of the RO reverse osmosis device 4 is connected with the water inlet of the pure water tank 5 through a third pipeline 10, the water outlet of the pure water tank 5 is connected with the water inlet of the cleaning pump 7 through a fourth pipeline 11, the water outlet of the cleaning pump 7 is connected with the water inlet of the high pressure pump 3 through a fifth pipeline 12, that is, the fifth pipeline 12 is connected with the first pipeline 8, the first pipeline 8 is provided with a three-way joint, the fifth pipeline 12 is connected with the first pipeline 8 through a three-way joint, so that the water outlet of the cleaning pump 7 is communicated with the water inlet of the high-pressure pump 3. The first solenoid valve 2 is provided on the line between the canister filter 1 and the high-pressure pump 3, i.e., the first solenoid valve 2 is provided on the first line 8, and the first solenoid valve 2 is located between the connection point of the fifth line 12 and the first line 8 and the canister filter 1. The second electromagnetic valve 6 is arranged on a pipeline communicating the water outlet of the cleaning pump 7 and the water inlet of the high-pressure pump 3, namely the second electromagnetic valve 6 is arranged on a fifth pipeline 12. Be connected with outlet pipe 13 on RO reverse osmosis unit 4's the dense water export, be equipped with drain valve 14 on the outlet pipe 13, first solenoid valve 2, second solenoid valve 6, normal close formula electromagnetic relay and normally open formula electromagnetic relay all are connected with the PLC controller electricity, high-pressure pump 3 is connected with the normal close formula electromagnetic relay electricity, scavenging pump 7 is connected with the normally open formula electromagnetic relay electricity.
The water outlet pipe 13 is connected with a branch pipe 15, one end of the branch pipe 15 is connected with a part of the water outlet pipe 13, which is located between a concentrated water outlet of the RO reverse osmosis device 4 and the drain valve 14, through a three-way joint, the branch pipe 15 is provided with a third electromagnetic valve 16, the third electromagnetic valve 16 is electrically connected with the PLC, and the third electromagnetic valve 16 is a normally closed electromagnetic valve. In other embodiments, both ends of the branch pipe 15 can be connected to the water outlet pipe 13 through a three-way joint, so that the drain valve 14 is located between the connection positions of both ends of the branch pipe 15 and the water outlet pipe 13 (see fig. 2).
Be equipped with first slow closed check valve 17 on the pipeline between high-pressure pump 3 and the RO reverse osmosis unit 4, be also equipped with first slow closed check valve 17 on the second pipeline 9, first slow closed check valve 17 supplies water and flows to RO reverse osmosis unit 4 from high-pressure pump 3, and when high-pressure pump 3 shut down, first slow closed check valve 17 can prevent that high-pressure pump 3 from reversing under the impact of flowing water, and first slow closed check valve 17 can also play the effect of waterproof hammer.
The pipeline that communicates the delivery port of scavenging pump 7 and the water inlet of high-pressure pump 3 is equipped with second slowly closing check valve 18, is also equipped with second slowly closing check valve 18 on the fifth pipeline 12 promptly, second slowly closing check valve 18 supplies water and flows to high-pressure pump 3 from scavenging pump 7, and when scavenging pump 7 stopped, second slowly closing check valve 18 can prevent that scavenging pump 7 from reversing under the impact of flowing back, and second slowly closing check valve 18 can also play the effect of waterproof hammer.
The use principle is as follows: when the water treatment system for preventing membrane scaling is used for preparing pure water, raw water is filtered by the security filter 1 and then enters the RO reverse osmosis filtering device after being pressurized by the high-pressure pump 3, reverse osmosis pure water enters the pure water tank 5 from a pure water outlet of the RO reverse osmosis device 4, reverse osmosis concentrated water is discharged from a concentrated water outlet of the RO reverse osmosis device 4 through the water outlet pipe 13, and the discharge speed of the concentrated water is controlled by the water discharge valve 14. Can predetermine first solenoid valve 2, second solenoid valve 6, third solenoid valve 16, normally closed type electromagnetic relay and normally open type electromagnetic relay's outage time and on-time through the PLC controller, first solenoid valve 2, second solenoid valve 6, third solenoid valve 16, normally closed type electromagnetic relay and normally open type electromagnetic relay are the outage simultaneously of circular telegram. After the time for making pure water reaches the preset power-off time, the PLC controls the first electromagnetic valve 2, the second electromagnetic valve 6, the third electromagnetic valve 16, the normally closed electromagnetic relay and the normally open electromagnetic relay to be electrified, at the moment, the contacts of the normally closed electromagnetic relay are separated, the high-pressure pump 3 is powered off and stopped, the first electromagnetic valve 2 is closed, and raw water cannot flow to the high-pressure pump 3; the second electromagnetic valve 6 is opened, the contact of the normally open electromagnetic relay is closed, the cleaning pump 7 is started and pumps the pure water in the pure water tank 5 to the high-pressure pump 3, the pure water flows through the high-pressure pump 3 and the second pipeline 9 and enters the concentrated water cavity of the RO reverse osmosis device 4, and the pure water washes and replaces the concentrated water in the concentrated water cavity; the third electromagnetic valve 16 is opened, and the branch pipe 15 starts auxiliary drainage, so that the speed of discharging the concentrated water from the concentrated water outlet of the RO reverse osmosis device 4 can be increased, and the speed of flushing and replacing the concentrated water in the RO reverse osmosis device 4 can be increased. At first solenoid valve 2, second solenoid valve 6, third solenoid valve 16, after the on-time of normally closed type electromagnetic relay and normally open type electromagnetic relay reached the preset time, PLC controller control first solenoid valve 2, second solenoid valve 6, third solenoid valve 16, normally closed type electromagnetic relay and normally open type electromagnetic relay outage, at this moment, normally closed type electromagnetic relay's contact is closed, high-pressure pump 3 starts, first solenoid valve 2 opens, second solenoid valve 6 closes, third solenoid valve 16 closes, washing pump 7 shut down, preparation pure water that this moment can be normal again. The PLC controller repeatedly controls the first electromagnetic valve 2, the second electromagnetic valve 6, the third electromagnetic valve 16, the normally closed electromagnetic relay and the normally open electromagnetic relay to be powered on and off, the water treatment system for preventing the membrane from scaling can repeatedly and alternately circulate between a pure water making state and a pure water flushing and replacing state, after pure water is made for a certain time, concentrated water in the RO reverse osmosis device 4 can be flushed and replaced, dense inorganic scale can be prevented from being formed on the membrane surface of the reverse osmosis membrane, and the membrane can be effectively prevented from scaling. When the water treatment system for preventing the membrane from scaling is adopted to prepare pure water, a scale inhibitor is not required to be added into raw water, and the system is very suitable for being used in the food and beverage industry or the medical industry.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are within the scope of the present invention.
Claims (4)
1. A water treatment system for preventing membrane fouling, comprising: comprises a security filter, a first electromagnetic valve, a high-pressure pump, an RO reverse osmosis device, a pure water tank, a second electromagnetic valve, a cleaning pump, a normally closed electromagnetic relay, a normally open electromagnetic relay and a PLC controller, wherein the water outlet of the security filter is connected with the water inlet of the high-pressure pump through a first pipeline, the water outlet of the high-pressure pump is connected with the water inlet of the RO reverse osmosis device through a second pipeline, the pure water outlet of the RO reverse osmosis device is connected with the water inlet of the pure water tank through a third pipeline, the water outlet of the pure water tank is connected with the water inlet of the cleaning pump through a fourth pipeline, the water outlet of the cleaning pump is communicated with the water inlet of the high-pressure pump through a fifth pipeline, the first electromagnetic valve is arranged on the first pipeline, the second electromagnetic valve is arranged on the fifth pipeline, the concentrated water outlet of the RO reverse osmosis device is connected with a water outlet pipe, and the water outlet pipe is provided with a drain valve, the cleaning device comprises a cleaning pump, a PLC controller, a first electromagnetic valve, a second electromagnetic valve, a normally closed electromagnetic relay and a normally open electromagnetic relay, wherein the first electromagnetic valve, the second electromagnetic valve, the normally closed electromagnetic relay and the normally open electromagnetic relay are all electrically connected with the PLC controller, the high-pressure pump is electrically connected with the normally closed electromagnetic relay, and the cleaning pump is electrically connected with the normally open electromagnetic relay.
2. A water treatment system for preventing fouling of a membrane as defined in claim 1, wherein: the water outlet pipe is connected with a branch pipe, one end of the branch pipe is connected to the part of the water outlet pipe, which is located between the concentrated water outlet of the RO reverse osmosis device and the drain valve, the branch pipe is provided with a third electromagnetic valve, and the third electromagnetic valve is electrically connected with the PLC.
3. A water treatment system for preventing fouling of a membrane as defined in claim 1, wherein: and a first slow-closing check valve is arranged on the second pipeline, and water is supplied to the RO reverse osmosis device from the high-pressure pump through the first slow-closing check valve.
4. A water treatment system for preventing fouling of a membrane as defined in claim 1, wherein: and a second slow-closing check valve is arranged on the fifth pipeline, and water is supplied to the high-pressure pump from the cleaning pump through the second slow-closing check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122940685.6U CN216191510U (en) | 2021-11-24 | 2021-11-24 | Water treatment system for preventing membrane scaling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122940685.6U CN216191510U (en) | 2021-11-24 | 2021-11-24 | Water treatment system for preventing membrane scaling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216191510U true CN216191510U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122940685.6U Active CN216191510U (en) | 2021-11-24 | 2021-11-24 | Water treatment system for preventing membrane scaling |
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| CN (1) | CN216191510U (en) |
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2021
- 2021-11-24 CN CN202122940685.6U patent/CN216191510U/en active Active
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