Water treatment equipment capable of preventing film from scaling
By adopting backwashing principle and PLC-controlled solenoid valve management in the water treatment equipment, the membrane scale problem is solved, efficient cleaning without shutdown is achieved, and the operation efficiency of the water treatment equipment is improved.
Patent Information
- Application Number
- CN202420852564.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-23
AI Technical Summary
During use, the filter membranes of existing water treatment equipment are prone to membrane fouling, resulting in a decrease in filtration efficiency. The existing methods to prevent membrane fouling require shutdown for front cleaning, which has a long cleaning time and low efficiency.
A water treatment equipment for anti-film scaling was designed, and the solenoid valve and PLC controller were managed by the backwashing principle to achieve reverse cleaning without shutdown, improve cleaning efficiency, and through parallel settings and multiple reverse osmosis membrane devices Select one to turn off to ensure the equipment is operating normally.
It effectively prevents membrane scaling, improves cleaning efficiency, and achieves efficient membrane cleaning without shutdown, reducing cleaning time and water flow requirements.
Smart Images
Figure CN222151560U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of water treatment equipment, in particular to water treatment equipment capable of preventing membrane scaling. Background Art
[0002] Water treatment methods include physical treatment and chemical treatment. Humans have been treating water for many years. Physical methods include using filter materials with different pore sizes to remove impurities from the water by adsorption or barrier methods. The most important adsorption method is adsorption with activated carbon. The barrier method is to pass water through the filter material to prevent larger impurities from passing through, thereby obtaining cleaner water.
[0003] During the treatment of aqueous solutions, a filter membrane is required to filter out impurities in the aqueous solution. However, during the use of the filter membrane used in current aqueous solution treatment equipment, impurities will adhere to the surface of the filter membrane. Long-term use of the filter membrane will easily lead to membrane scaling, resulting in low filtration efficiency of the filter membrane, affecting the use of water treatment equipment.
[0004] The patent document with application number 202122940685.6 discloses a water treatment system for preventing membrane scaling. The first solenoid valve, the second solenoid valve, the normally closed electromagnetic relay and the normally open electromagnetic relay are repeatedly controlled by the PLC controller to be powered on and off. The water treatment system for preventing membrane scaling described in the utility model can repeatedly cycle between the pure water production state and the pure water flushing and replacement state. After each time of producing pure water for a certain period of time, the concentrated water in the RO reverse osmosis device can be flushed and replaced, which can prevent the formation of dense inorganic scale on the membrane surface of the reverse osmosis membrane of the RO reverse osmosis device, and can effectively prevent membrane scaling. Although the device can clean the membrane, the cleaning requires the shutdown of the equipment. At the same time, the structure adopts front cleaning, the cleaning time is long and the cleaning water flow rate requirement is large, and the cleaning efficiency is relatively low. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a water treatment device which has high cleaning efficiency and prevents membrane scaling without stopping.
[0006] The utility model adopts the following technical scheme to solve the technical problem: the water treatment equipment for preventing membrane scaling comprises a water inlet main pipe, two or more water inlet branches connected to the water outlet end of the water inlet main pipe, a reverse osmosis membrane device arranged on each water inlet branch pipe, a first solenoid valve connected to the water inlet branch pipe and located on one side of the water inlet end of the reverse osmosis membrane device, a water outlet branch pipe arranged at the water outlet end of the reverse osmosis membrane device, a water storage tank arranged at the end of the water outlet branch pipe, a second solenoid valve arranged on each water outlet branch pipe, a return branch pipe connecting the water storage tank and each reverse osmosis membrane device, and a third solenoid valve and a water pump arranged on each return branch pipe.
[0007] Furthermore, the water outlet end of the return water branch pipe is connected between the water inlet end of the water outlet branch pipe and the second solenoid valve.
[0008] Furthermore, drainage pipes are respectively arranged below the reverse osmosis membrane devices, and the drainage pipes are connected to drainage valves.
[0009] Furthermore, it also includes a wastewater tank, and the drainage pipe is connected to the wastewater tank.
[0010] Furthermore, the reverse osmosis membrane device comprises an RO reverse osmosis membrane, the reverse osmosis membrane device is arranged on one side of the RO reverse osmosis membrane, and the water blowing end is arranged on the other side.
[0011] Furthermore, the number of the reverse osmosis membrane devices is two, and the water inlet main pipe is also connected to a filter.
[0012] Furthermore, the first solenoid valve, the second solenoid valve and the third solenoid valve are electrically connected to a PLC controller respectively.
[0013] The water treatment equipment for preventing membrane scaling is used normally in daily use. The first solenoid valve and the second solenoid valve are opened, and the third solenoid valve is closed. At this time, the reverse osmosis membrane device connected in parallel through the water inlet branch pipe, and the treated water flows into the water storage tank after passing through the water outlet branch pipe; when cleaning is required, the first battery valve and the second solenoid valve on a certain water inlet branch pipe are closed, the third solenoid valve on the return branch pipe corresponding to the reverse osmosis membrane device is opened, and the water pump is turned on. At this time, the water in the water storage tank flows into the reverse osmosis membrane device through the return branch pipe for backwashing, and the waste water after backwashing is discharged through the drain pipe. The present invention uses the backwashing principle to clean the reverse osmosis membrane device, effectively preventing scaling, and the backwashing greatly improves the flushing efficiency, and one of the multiple reverse osmosis membrane devices is closed for cleaning, and the remaining ones work normally, so as to achieve the purpose of completing cleaning without stopping. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:
[0015] Figure 1 It is a schematic structural diagram of a water treatment device for preventing membrane scaling according to an embodiment of the utility model.
[0016] Description of reference numerals:
[0017] 1. Water inlet main pipe; 2. Water inlet branch pipe; 3. Reverse osmosis membrane device; 4. First solenoid valve; 5. Water outlet branch pipe; 6. Water storage tank; 7. Second solenoid valve; 8. Return water branch pipe; 9. Third solenoid valve; 10. Water pump; 11. Wastewater tank; 12. Filter. DETAILED DESCRIPTION
[0018] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.
[0019] like Figure 1 As shown, the water treatment equipment for preventing membrane scaling comprises a water inlet main pipe 1, two or more water inlet branches 2 connected to the water outlet end of the water inlet main pipe 1, a reverse osmosis membrane device 3 arranged on each water inlet branch pipe 2, a first solenoid valve 4 connected to the water inlet branch pipe 2 and located on the water inlet side of the reverse osmosis membrane device 3, a water outlet branch pipe 5 arranged at the water outlet end of the reverse osmosis membrane device 3, a water storage tank 6 arranged at the end of the water outlet branch pipe 5, a second solenoid valve 7 arranged on each water outlet branch pipe 5, a return branch pipe 8 connecting the water storage tank 6 and each reverse osmosis membrane device 3, and a third solenoid valve 9 and a water pump 10 arranged on each return branch pipe 8.
[0020] In normal daily use, the first solenoid valve 4 and the second solenoid valve 7 are opened, and the third solenoid valve 9 is closed. At this time, the reverse osmosis membrane device 3 connected in parallel through the water inlet branch pipe 2, the treated water flows through the water outlet branch pipe 5 and enters the water storage tank 6; when cleaning is required, the first battery valve and the second solenoid valve 7 on a certain water inlet branch pipe 2 are closed, the third solenoid valve 9 on the return branch pipe 8 corresponding to the reverse osmosis membrane device 3 is opened, and the water pump 10 is turned on. At this time, the water in the water storage tank 6 flows through the return branch pipe 8 into the reverse osmosis membrane device 3 for backwashing, and the waste water after backwashing is discharged through the drain pipe. The present invention uses the backwashing principle to clean the reverse osmosis membrane device 3, effectively preventing scaling, and the backwashing greatly improves the flushing efficiency, and one of the multiple reverse osmosis membrane devices 3 is closed for cleaning, and the remaining ones work normally, so as to achieve the purpose of completing cleaning without stopping.
[0021] Drain pipes are provided below the reverse osmosis membrane device 3, and drain valves are connected to the drain pipes. In this embodiment, a wastewater tank 11 is provided to store wastewater after cleaning the membrane, and the drain pipes are connected to the wastewater tank 11. The water entering the reverse osmosis membrane device 3 through the return branch pipe 8 is used to reversely flush the membrane, and the flushed water enters the wastewater tank 11 through the drain pipe.
[0022] The reverse osmosis membrane device 3 includes an RO reverse osmosis membrane, which is arranged on one side of the RO reverse osmosis membrane and the water outlet is arranged on the other side. In this embodiment, there are two reverse osmosis membrane devices 3, and a filter 12 is also connected to the water inlet main pipe 1.
[0023] The water outlet end of the return branch pipe 8 is connected between the water inlet end of the water outlet branch pipe 5 and the second solenoid valve 7. The first solenoid valve 4, the second solenoid valve 7 and the third solenoid valve 9 are electrically connected to the PLC controller respectively.
[0024] The working principle of this device is as follows: Figure 1, in normal daily use, open the solenoid valves a, b, c, d, e, and f, and close the solenoid valves g, h, and i. At this time, the water flows through the reverse osmosis membrane device 3 connected in parallel with the water inlet branch pipe 2, and the treated water flows through the water outlet branch pipe 5 and enters the water storage tank 6 to complete the water treatment. When cleaning is required, for example, to clean the top reverse osmosis membrane device 3, close the battery valve a and the solenoid valve d, open the solenoid valve g on the return branch pipe 8 corresponding to the reverse osmosis membrane device 3, and start the water pump 10. At this time, the water in the water storage tank 6 flows through the return branch pipe 8 into the reverse osmosis membrane device 3 for backwashing. The wastewater after backwashing is discharged through the drain pipe and flows into the wastewater tank 11. Of course, in order to prevent the reverse osmosis membrane device from being damaged by excessive backwashing pressure, the backwashing pressure should not exceed 0.1MPa. The pressure monitoring instrument (not shown) is installed to realize the pressure monitoring. The pressure monitoring and common equipment are conventional equipment and the installation method is mature, which will not be repeated here.
[0025] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0026] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A water treatment device to prevent membrane scaling, It is characterized in that The invention comprises a water inlet main pipe (1), two or more water inlet branch pipes (2) connected to the water outlet end of the water inlet main pipe (1), a reverse osmosis membrane device (3) arranged on each water inlet branch pipe (2), a first solenoid valve (4) connected to the water inlet branch pipe (2) and located on the water inlet side of the reverse osmosis membrane device (3), a water outlet branch pipe (5) arranged at the water outlet end of the reverse osmosis membrane device (3), a water storage tank (6) arranged at the end of the water outlet branch pipe (5), a second solenoid valve (7) arranged on each water outlet branch pipe (5), a return branch pipe (8) connecting the water storage tank (6) and each reverse osmosis membrane device (3), and a third solenoid valve (9) and a water pump (10) arranged on each return branch pipe (8).
2. The water treatment equipment for preventing membrane scaling according to claim 1, It is characterized in that The water outlet end of the return water branch pipe (8) is connected between the water inlet end of the water outlet branch pipe (5) and the second solenoid valve (7).
3. The water treatment equipment for preventing membrane scaling according to claim 1, It is characterized in that Drainage pipes are respectively arranged below the reverse osmosis membrane devices (3), and the drainage pipes are connected to drainage valves.
4. The water treatment equipment for preventing membrane scaling according to claim 3, It is characterized in that It also includes a wastewater tank (11), and the drainage pipe is connected to the wastewater tank (11).
5. The water treatment equipment for preventing membrane scaling according to claim 1, It is characterized in that The reverse osmosis membrane device (3) comprises an RO reverse osmosis membrane. The reverse osmosis membrane device (3) is arranged on one side of the RO reverse osmosis membrane, and the water blowing end is arranged on the other side.
6. The water treatment equipment for preventing membrane scaling according to claim 5, It is characterized in that The number of the reverse osmosis membrane devices (3) is two, and the water inlet main pipe (1) is also connected to a filter (12).
7. The water treatment equipment for preventing membrane scaling according to any one of claims 1 to 6, It is characterized in that The first solenoid valve (4), the second solenoid valve (7) and the third solenoid valve (9) are respectively electrically connected to a PLC controller.