EDI automatic constant-voltage constant-current system
Through the EDI automatic constant pressure and constant current system, the EDI module is controlled to operate under reasonable operating conditions by using components such as booster pumps, reverse osmosis membrane modules and electromagnetic reversing valves, which solves the control problems of the EDI module under different operating conditions and The problem of low water quality efficiency in the early stage of reverse osmosis membrane module has achieved more stable and efficient water quality treatment.
Patent Information
- Application Number
- CN202421098217.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing EDI modules are difficult to control the ion migration amount under different working conditions and are prone to damage under extreme conditions. The water quality of the reverse osmosis membrane module is efficient but has low efficiency in the early stage, which affects the working status of the EDI module.
The EDI automatic constant pressure and constant current system is designed, including a booster pump, reverse osmosis membrane module, water quality detector, flowmeter, electromagnetic reversing valve and variable power supply. By controlling the water flow rate and current voltage, the EDI module is ensured to be reasonable. Operate under working conditions to avoid damage under extreme conditions, and use wastewater flow rate control components and diverter pipes to optimize water quality treatment.
It realizes better control of the EDI module, ensures its stable operation under different working conditions, avoids damage, and improves water quality treatment efficiency by optimizing the reverse osmosis membrane module and extends the service life of the EDI module.
Smart Images
Figure CN222274222U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of EDI modules, and specifically discloses an EDI automatic constant voltage and constant current system. Background Art
[0002] EDI: A pure water manufacturing technology that combines ion exchange membrane technology with ion electromigration technology. It cleverly combines electrodialysis and ion exchange technology, uses high voltage at both ends of the electrodes to move charged ions in the water, and cooperates with ion exchange resins and selective resin membranes to accelerate ion movement and removal. In the EDI desalination process, ions are removed through the ion exchange membrane under the action of the electric field. At the same time, water molecules produce hydrogen ions and hydroxide ions under the action of the electric field, and these ions continuously regenerate the ion exchange resin to keep the ion exchange resin in the best condition;
[0003] EDI's automatic constant voltage and constant current refers to an automatic system that allows the EDI module to work at a constant voltage and current. In order to use the EDI module more efficiently, we must control the ion migration amount of the EDI module under different working conditions. We can increase or decrease the working current of the module by changing the output voltage of the module power supply to affect the ion migration amount, and limit the maximum output current to avoid damage to the EDI module under extreme working conditions;
[0004] In view of this, the inventor proposes an EDI automatic constant voltage and constant current system to better utilize the EDI module. Utility Model Content
[0005] The purpose of the utility model is to better control the EDI module, thereby making the work of the EDI module smoother.
[0006] In order to achieve the above object, the utility model provides the following basic solutions:
[0007] The ED I automatic constant pressure and constant flow system comprises a water inlet, a wastewater outlet and a water collection outlet, wherein a booster pump and a reverse osmosis membrane module are provided at the water inlet, an outlet on one side of the reverse osmosis membrane module is connected to the wastewater outlet, and a wastewater flow rate control component is provided between the reverse osmosis membrane module and the wastewater outlet;
[0008] The other side outlet of the reverse osmosis membrane module is provided with a first water quality detector and a first flow meter, the outlet of the first water quality detector is connected to an electromagnetic reversing valve, one side outlet of the electromagnetic reversing valve is connected to the outlet of the wastewater flow rate control component and then connected to the wastewater outlet;
[0009] The outlet on the other side of the electromagnetic reversing valve is connected to an EDI module, a small flow control module is provided between the EDI module and the electromagnetic reversing valve, a third flow meter is provided at the outlet end of the EDI module, the outlet of the third flow meter is connected to the water collection port, and a large flow control module is connected to the third flow meter.
[0010] The principles and effects of this basic solution are:
[0011] 1. Compared with the prior art, this device has a simple structure and ingenious design. This device can better control the EDI module, thereby making the EDI module work more smoothly. Mainly in the initial stage of water quality, the water quality at this time cannot pass the first water quality detector, so we set up an electromagnetic reversing valve so that the water will not pass through the EDI module. The water that does not pass through the EDI module flows directly into the wastewater outlet and is no longer used.
[0012] 2. Compared with the prior art, the present invention sets up a reverse osmosis membrane module to improve the water quality. However, the reverse osmosis membrane module has an efficiency problem, that is, there is very little good quality water at the beginning. If an EDI module is needed at this time, the working condition of the EDI module will become worse. Therefore, the design of this case does not need the water at this time. Therefore, a wastewater flow rate control component and a first flow meter are set up. The water flow that does not reach the threshold of the first flow meter is not needed. All water flows into the wastewater flow rate control component and finally reach the wastewater outlet for discharge. At the same time, improvements can be made to the wastewater flow rate control component to achieve full discharge and batch discharge. The specific design can depend on the actual usage.
[0013] 3. Compared with the prior art, similarly, when the threshold of the first flow meter is reached, the electromagnetic reversing valve will be reversed, that is, the water can enter the EDI module. However, since the flow at this time is still too small, the EDI module is not suitable for working under such extreme working conditions. Therefore, the EDI module is not started, and this section of water passes through the EDI module and flows through the wastewater outlet for discharge.
[0014] 4. Compared with the prior art, which is the core of this case, as the reverse osmosis membrane module continues to work, the amount of water passing through the EDI module increases and reaches the threshold designed by the third flow meter. At this time, the single-chip microcomputer controller and the current-voltage variable power supply work. When the flow is large, the working current should be increased to increase the amount of ion migration. The signal of the single-chip microcomputer is fed back by the third flow meter to control the current and voltage in the current-voltage variable power supply, so that the EDI module is in a reasonable and correct working condition for a long time.
[0015] Furthermore, the wastewater flow rate control component includes a main pipe, a first shunt pipe and a second shunt pipe arranged on the output end of the main pipe, the first shunt pipe is provided with a solenoid valve, and the second shunt pipe is provided with a second flow meter and a regulating valve.
[0016] Furthermore, the electromagnetic reversing valve is connected to a first water quality detector. After the water quality detected by the first water quality detector meets the standard, the electromagnetic reversing valve is reversed, and the water flow no longer flows from the wastewater flow rate control component to the wastewater outlet.
[0017] Furthermore, the small flow control module includes a switch valve and a fourth flow meter, and the fourth flow meter is electrically connected to the electromagnetic reversing valve and then electrically connected to the large flow control module.
[0018] Furthermore, the large flow control module is electrically connected to the electromagnetic reversing valve, and the large flow control module includes a single-chip microcomputer controller and a current-voltage variable power supply. After the single-chip microcomputer controller and the current-voltage variable power supply are electrically connected, the current-voltage variable power supply is connected to the EDI module to supply power to the EDI module. After the EDI module is powered, the switch valve is closed.
[0019] Furthermore, a second water quality detector is provided between the outlet of the third flow meter and the water collection outlet, and the second water quality detector is used to detect the water quality in the water collection outlet. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 The schematic diagram of the principle process of the EDI automatic constant voltage and constant current system proposed in the embodiment of the present application is shown. DETAILED DESCRIPTION
[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.
[0023] The figure marks in the drawings of the specification include: wastewater outlet 1, water collection outlet 2, water inlet 3, booster pump 4, pressure detection module 5, reverse osmosis membrane module 6, main pipe 7, solenoid valve 8, second flow meter 9, regulating valve 10, first flow meter 11, first water quality detector 12, solenoid reversing valve 13, switch valve 14, fourth flow meter 15, EDI module 16, third flow meter 17, second water quality detector 18, single chip controller 19, current and voltage variable power supply 20.
[0024] Implementation example Figure 1 As shown:
[0025] The EDI automatic constant pressure and constant flow system comprises a water inlet 3, a wastewater outlet 1 and a water collection outlet 2, wherein a booster pump 4 and a reverse osmosis membrane module 6 are provided at the water inlet 3, a side outlet of the reverse osmosis membrane module 6 is connected to the wastewater outlet 1, and a wastewater flow rate control component is provided between the reverse osmosis membrane module 6 and the wastewater outlet 1;
[0026] The other side outlet of the reverse osmosis membrane module 6 is provided with a first water quality detector 12 and a first flow meter 11, the outlet of the first water quality detector 12 is connected to an electromagnetic reversing valve 13, one side outlet of the electromagnetic reversing valve 13 is connected to the outlet of the wastewater flow rate control component and then connected to the wastewater outlet 1;
[0027] The other side outlet of the electromagnetic reversing valve 13 is connected to an EDI module 16, a small flow control module is provided between the EDI module 16 and the electromagnetic reversing valve 13, a third flow meter 17 is provided at the outlet end of the EDI module 16, the outlet of the third flow meter 17 is connected to the water collection port 2, and a large flow control module is connected to the third flow meter 17.
[0028] Specifically: the wastewater flow rate control component includes a main pipe 7, a first shunt pipe and a second shunt pipe arranged on the output end of the main pipe 7, the first shunt pipe is provided with a solenoid valve 8, the second shunt pipe is provided with a second flow meter 9 and a regulating valve 10, the solenoid reversing valve 13 is connected to the first water quality detector 12, and after the water quality detection of the first water quality detector 12 meets the standard, the solenoid reversing valve 13 is reversed, and the water flow no longer flows from the wastewater flow rate control component to the wastewater outlet 1.
[0029] The small flow control module includes a switch valve 14 and a fourth flow meter 15. The fourth flow meter 15 is electrically connected to the electromagnetic reversing valve 13 and then electrically connected to the large flow control module. The large flow control module is electrically connected to the electromagnetic reversing valve 13. The large flow control module includes a single-chip microcomputer controller 19 and a current-voltage variable power supply 20. After the single-chip microcomputer controller 19 and the current-voltage variable power supply 20 are electrically connected, the current-voltage variable power supply 20 is connected to the EDI module 16 to supply power to the EDI module 16. After the EDI module 16 is powered, the switch valve 14 is closed, and a second water quality detector 18 is provided between the outlet of the third flow meter 17 and the water collection port 2. The second water quality detector 18 is used to detect the water quality in the water collection port 2.
[0030] Specific implementation process: water enters the water inlet 3, is pressurized by the booster pump 4 and reaches the pressure detection module 5, detects the water pressure, and then enters the reverse osmosis membrane module 6 to purify the water quality. In this process, since the water coming out does not meet the requirements of the first water quality detector 12 and the first flow meter 11, the water in the reverse osmosis membrane module 6 at this time can only flow to the wastewater flow rate control component. The first diversion pipe in the wastewater flow rate control component is used to quickly discharge water to the wastewater port 1. The second diversion pipe is provided with a second flow meter 9 and a regulating valve 10, which can control the flow rate of discharged water to the wastewater port 1 in batches.
[0031] In the first step, as the reverse osmosis membrane module 6 purifies the water quality so that the water quality meets the flow requirement of the first flow meter 11, the solenoid valve 8 is closed, and all the water flows to the solenoid reversing valve 13, but does not meet the requirement of the first water quality detector 12. The solenoid reversing valve 13 will not reverse, and the water will still flow to the wastewater outlet 1 and will not enter the EDI module 16.
[0032] In the second step, when the water quality reaches the flow requirement of the first flow meter 11 and the requirement of the first water quality detector 12, the electromagnetic reversing valve 13 is switched and opened. However, at this time, the water flow passing through the EDI module 16 is a small flow, and the EDI module 16 does not use a small flow. Therefore, the switch valve 14 and the fourth flow meter 15 are designed. When the fourth flow meter 15 does not reach the threshold, the switch valve 14 is opened to prevent all these small flows from passing through the EDI module 16 and being directly discharged to the wastewater outlet 1.
[0033] In the third step, as the flow rate increases, when the fourth flowmeter 15 does not reach the threshold, the switch valve 14 is closed, and the electromagnetic reversing valve 13 is reversed, allowing all water to flow through the EDI module 16. At this time, the third flowmeter 17 obtains the flow rate, and then triggers the relevant electrical signal to the single-chip controller 19. The single-chip controller 19 controls the current and voltage variable power supply 20 to provide relevant energy to the EDI module 16, thereby controlling the working condition of the EDI module 16. The output of the EDI module 16 is further controlled by the third flowmeter 17, so that the EDI module 16 can be kept in a suitable working condition for a long time and reasonably.
[0034] The purpose of this structure is to better control the EDI module 16, thereby making the work of the EDI module 16 smoother.
[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. EDI automatic constant voltage and constant current system, characterized by: It includes a water inlet, a wastewater outlet and a water collection outlet, wherein a booster pump and a reverse osmosis membrane module are arranged at the water inlet, an outlet on one side of the reverse osmosis membrane module is connected to the wastewater outlet, and a wastewater flow rate control component is arranged between the reverse osmosis membrane module and the wastewater outlet; The other side outlet of the reverse osmosis membrane module is provided with a first water quality detector and a first flow meter, the outlet of the first water quality detector is connected to an electromagnetic reversing valve, one side outlet of the electromagnetic reversing valve is connected to the outlet of the wastewater flow rate control component and then connected to the wastewater outlet; The outlet on the other side of the electromagnetic reversing valve is connected to an EDI module, a small flow control module is provided between the EDI module and the electromagnetic reversing valve, a third flow meter is provided at the outlet end of the EDI module, the outlet of the third flow meter is connected to the water collection port, and a large flow control module is connected to the third flow meter.
2. The EDI automatic constant voltage and constant current system according to claim 1 is characterized in that: The wastewater flow rate control component includes a main pipe, a first shunt pipe and a second shunt pipe arranged on the output end of the main pipe, the first shunt pipe is provided with a solenoid valve, and the second shunt pipe is provided with a second flow meter and a regulating valve.
3. The EDI automatic constant voltage and constant current system according to claim 2 is characterized in that: The electromagnetic reversing valve is connected to the first water quality detector. After the water quality detected by the first water quality detector meets the standard, the electromagnetic reversing valve is reversed, and the water flow no longer flows from the wastewater flow rate control component to the wastewater outlet.
4. The EDI automatic constant voltage and constant current system according to claim 3 is characterized in that: The small flow control module includes a switch valve and a fourth flow meter. The fourth flow meter is electrically connected to the electromagnetic reversing valve and then electrically connected to the large flow control module.
5. The EDI automatic constant voltage and constant current system according to claim 4 is characterized in that: The large flow control module is electrically connected to the electromagnetic reversing valve, and the large flow control module includes a single-chip microcomputer controller and a current-voltage variable power supply. After the single-chip microcomputer controller and the current-voltage variable power supply are electrically connected, the current-voltage variable power supply is connected to the EDI module to supply power to the EDI module. After the EDI module is powered, the switch valve is closed.
6. The EDI automatic constant voltage and constant current system according to claim 1 is characterized in that: A second water quality detector is provided between the outlet of the third flow meter and the water collection port, and the second water quality detector is used to detect the water quality in the water collection port.