Concentrated water backflow control method and device and purification system

Abstract

The invention discloses a concentrated water backflow method and device and a purification system, and relates to the field of purification, and the method comprises the following steps: in the purification process, obtaining current hardness data of tap water to be input into a reverse osmosis membrane filter element; a current operation gear corresponding to the current hardness data is determined, so that an electric ball valve operates according to the current operation gear, and the electric ball valve is used for controlling the flow of current backflow concentrated water; a liquid scale inhibitor with the target content matched with the flow of the current backflow concentrated water is obtained from a liquid scale inhibitor storage box through a jet device; and mixing the target content of the liquid scale inhibitor with the current reflux concentrated water through the jet device to obtain a first mixed liquid, and inputting the first mixed liquid into the reverse osmosis membrane filter element through the pressurization self-priming pump. The flow of the current backflow concentrated water and the content of the liquid scale inhibitor are controlled in real time, the utilization effect of concentrated water backflow is improved, and meanwhile the service life of the device is prolonged.

Description

Technical Field

[0001] The present application relates to the field of purification, and specifically relates to a method and device for controlling the return of concentrated water and a purification system. Background Art

[0002] Concentrated water is generated during the process of purifying water. Concentrated water refers to the wastewater, sewage, and liquid waste generated during industrial production, which contains industrial production materials, intermediate products, and products lost with the water, as well as pollutants generated during the production process. The reverse osmosis water purification system has a design for returning concentrated water. By returning the concentrated water, the purification effect is improved, and the pollution caused by directly discharging the concentrated water is reduced.

[0003] However, in the related art, the content of the returned concentrated water is constant, and its utilization efficiency still needs to be improved. Summary of the Invention

[0004] In order to improve the utilization efficiency of the return of concentrated water, the present application provides a method and device for controlling the return of concentrated water and a purification system. The technical solutions are as follows:

[0005] In a first aspect, the present application provides a method for controlling the return of concentrated water, the method comprising:

[0006] During the purification process, obtaining the current hardness data of the tap water to be input into the reverse osmosis membrane filter element;

[0007] Based on the corresponding relationship between the preset operating gear and the hardness data, determining the current operating gear corresponding to the current hardness data, so that the electric ball valve operates according to the current operating gear, the electric ball valve is used to control the flow rate of the currently returned concentrated water, and the currently returned concentrated water is part or all of the concentrated water discharged by the reverse osmosis membrane filter element;

[0008] Through a jet injector, obtaining a target content of liquid scale inhibitor that matches the flow rate of the currently returned concentrated water from the liquid scale inhibitor storage tank;

[0009] Through the jet injector, mixing the target content of liquid scale inhibitor with the currently returned concentrated water to obtain a first mixed liquid, and inputting the first mixed liquid into the reverse osmosis membrane filter element through a booster self-priming pump.

[0010] Optionally, before operating the electric ball valve, the method further comprises:

[0011] Determining the first liquid level height of the first liquid level float ball in the liquid scale inhibitor storage tank;

[0012] When the first liquid level height is lower than the first preset water level, liquid scale inhibitor is replenished into the liquid scale inhibitor storage tank until the first liquid level height reaches the second preset water level, and the first preset water level is lower than the second preset water level.

[0013] Optionally, the method further includes:

[0014] Mix the tap water to be input into the reverse osmosis membrane filter element with the first mixed liquid through the pressurized self-priming pump to obtain a second mixed liquid;

[0015] Pressurize the second mixed liquid through the pressurized self-priming pump to input it into the reverse osmosis membrane filter element.

[0016] Optionally, the determining the current operating gear corresponding to the current hardness data based on the corresponding relationship between the preset operating gear and the hardness data includes:

[0017] When the current hardness data is less than or equal to 100 mg / L, determine that the current operating gear is the first gear;

[0018] When the current hardness data is between 100 mg / L and 300 mg / L, determine that the current operating gear is the second gear;

[0019] When the current hardness data is greater than or equal to 300 mg / L, determine that the current operating gear is the third gear;

[0020] Wherein, the flow rate of the reflux concentrated water corresponding to the first gear is lower than the flow rate of the reflux concentrated water corresponding to the second gear, and the flow rate of the reflux concentrated water corresponding to the second gear is lower than the flow rate of the reflux concentrated water corresponding to the third gear.

[0021] In a second aspect, the present application provides a concentrated water reflux control device, and the device includes:

[0022] A current hardness data acquisition module, configured to acquire the current hardness data of the tap water to be input into the reverse osmosis membrane filter element during the purification process;

[0023] A current operating gear determination module, configured to determine the current operating gear corresponding to the current hardness data based on the corresponding relationship between the preset operating gear and the hardness data, so that the electric ball valve operates according to the current operating gear, and the electric ball valve is used to control the flow rate of the current reflux concentrated water, and the current reflux concentrated water is part or all of the concentrated water discharged by the reverse osmosis membrane filter element;

[0024] A liquid scale inhibitor acquisition module, configured to acquire a target content of liquid scale inhibitor matching the flow rate of the current reflux concentrated water from the liquid scale inhibitor storage tank through a jet injector;

[0025] A first mixing module, configured to mix the liquid scale inhibitor with the target content and the current concentrated water in reflux through the ejector to obtain a first mixed liquid, so that a pressurized self-priming pump inputs the first mixed liquid into the reverse osmosis membrane filter element.

[0026] In a third aspect, the present application provides a purification system, which includes a concentrated water reflux circuit and a liquid scale inhibitor storage tank. The concentrated water reflux circuit includes a pressurized self-priming pump, a reverse osmosis membrane filter element, an electric ball valve, and an ejector.

[0027] The water outlet of the pressurized self-priming pump is connected to the water inlet of the reverse osmosis membrane filter element.

[0028] The concentrated water outlet of the reverse osmosis membrane filter element is connected to the water inlet of the electric ball valve. The electric ball valve is used to control the flow rate of the current concentrated water in reflux, and the operating gear of the electric ball valve is associated with the hardness data of the tap water to be input into the reverse osmosis membrane filter element.

[0029] The water outlet of the electric ball valve is connected to the water inlet of the ejector.

[0030] The suction port of the ejector is connected to the liquid outlet of the liquid scale inhibitor storage tank. The ejector is configured to suck a liquid scale inhibitor with a target content into the concentrated water reflux circuit according to the flow rate of the current concentrated water in reflux, and mix the liquid scale inhibitor with the current concentrated water in reflux.

[0031] The water outlet of the ejector is connected to the water inlet of the pressurized self-priming pump.

[0032] Optionally, the purification system further includes a waste water solenoid valve. The water inlet of the waste water solenoid valve is connected to the waste water outlet of the reverse osmosis membrane filter element, and the waste water solenoid valve is used to discharge the concentrated water that has not passed through the concentrated water reflux circuit.

[0033] Optionally, the purification system further includes a flow meter. The flow meter is located between the electric ball valve and the ejector. The water inlet of the flow meter is connected to the water outlet of the electric ball valve, and the water outlet of the flow meter is connected to the water inlet of the ejector. The flow meter is used to measure the flow rate of the current concentrated water in reflux.

[0034] Optionally, the liquid scale inhibitor storage tank is provided with a first exhaust hole and a first liquid level float ball, and the first liquid level float ball is used to detect the liquid level height in the liquid scale inhibitor storage tank.

[0035] Optionally, the purification system may further include a hardness detector, and the hardness detector is used to detect the hardness data of the tap water to be input into the reverse osmosis membrane filter element.

[0036] Fourthly, the present application provides a computer-readable storage medium, in which at least one instruction or at least one program segment is stored, and the at least one instruction or at least one program segment is loaded and executed by a processor to implement a concentrated water reflux control method as described in the first aspect.

[0037] Fifthly, the present application provides a computer device, which includes a processor and a memory. At least one instruction or at least one program segment is stored in the memory, and the at least one instruction or at least one program segment is loaded and executed by the processor to implement a concentrated water reflux control method as described in the first aspect.

[0038] Sixthly, the present application provides a computer program product, which includes computer instructions. When the computer instructions are executed by a processor, a concentrated water reflux control method as described in the first aspect is implemented.

[0039] A concentrated water reflux control method, device and a purification system provided by the present application have the following technical effects:

[0040] In the purification process of the technical solution provided by the present application, according to the current hardness data of the tap water to be input into the reverse osmosis membrane filter element, the corresponding current operation gear is determined, so that the electric ball valve operates according to the current operation gear to implement the control of the current reflux concentrated water flow; at the same time, through the ejector, a target content of liquid scale inhibitor is obtained from the liquid scale inhibitor storage tank, which matches the flow rate of the current reflux concentrated water, and then the target content of liquid scale inhibitor is mixed with the current reflux concentrated water to obtain a first mixed liquid, and then the first mixed liquid is input into the reverse osmosis membrane filter element through a booster self-priming pump. By controlling the flow rate of the current reflux concentrated water in real time, the present application improves the utilization effect of the concentrated water reflux, and further improves the purification effect. At the same time, the content of the liquid scale inhibitor is also controlled in real time, which can effectively protect the membrane element and extend the service life of the device.

[0041] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0042] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0043] Figure 1It is a schematic diagram of the composition of a purification system provided by an embodiment of the present application;

[0044] Figure 2 It is a schematic flow diagram of a concentrated water reflux control method provided by an embodiment of the present application;

[0045] Figure 3 It is a schematic diagram of a concentrated water reflux control device provided by an embodiment of the present application;

[0046] Figure 4 Schematic diagram of the hardware structure of the device for implementing a concentrated water reflux control method provided by an embodiment of the present application;

[0047] Among them, the corresponding reference numerals are: 1 - Liquid scale inhibitor storage tank; 2 - Boosting self-priming pump; 3 - Reverse osmosis membrane filter element; 4 - Electric ball valve; 5 - Ejector; 6 - Waste water solenoid valve; 7 - Exhaust hole; 8 - Liquid level float; 9 - Hardness detector; 10 - Pretreatment filter element; 11 - Solenoid valve; 12 - Check valve; 13 - Post-treatment filter element; 14 - Solenoid valve; 15 - Clean water tank; 16 - Exhaust hole; 17 - Liquid level float; 18 - Solenoid valve; 19 - Solenoid valve. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or server including a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0050] The following will detail various exemplary embodiments, features and aspects of the present application with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0051] As used herein, the term "exemplary" means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" herein need not be construed as superior or better than other embodiments.

[0052] As used herein, the term "and / or" is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, both A and B exist simultaneously, and B exists alone. Additionally, the term "at least one" as used herein means any one of a plurality or any combination of at least two of a plurality. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0053] In addition, for a better illustration of the present application, numerous specific details are given in the following detailed implementation manners. Those skilled in the art should understand that the present application can still be implemented without certain specific details. In some instances, methods, means, elements, and circuits well-known to those skilled in the art are not described in detail to highlight the gist of the present application.

[0054] Please refer to Figure 1 , Figure 1 which is a schematic diagram of the composition of a purification system provided by an embodiment of the present application. As Figure 1 shown, the purification system includes a concentrated water return loop and a liquid scale inhibitor storage tank 1. The concentrated water return loop includes a booster self-priming pump 2, a reverse osmosis membrane filter element 3, an electric ball valve 4, and a jet pump 5;

[0055] The water outlet of the booster self-priming pump 2 is connected to the water inlet of the reverse osmosis membrane filter element 3;

[0056] The concentrated water outlet of the reverse osmosis membrane filter element 3 is connected to the water inlet of the electric ball valve 4. The electric ball valve 4 is used to control the flow rate of the currently returned concentrated water, and the operating gear of the electric ball valve 4 is associated with the hardness data of the tap water to be input to the reverse osmosis membrane filter element 3;

[0057] The water outlet of the electric ball valve 4 is connected to the water inlet of the jet pump 5;

[0058] The suction port of the jet pump 5 is connected to the liquid outlet of the liquid scale inhibitor storage tank 1. The jet pump 5 is used to suck a target content of liquid scale inhibitor into the concentrated water return loop according to the flow rate of the currently returned concentrated water and mix the target content of liquid scale inhibitor with the currently returned concentrated water;

[0059] The water outlet of the jet pump 5 is connected to the water inlet of the booster self-priming pump 2.

[0060] Further, the purification system further includes a waste water solenoid valve 6. The water inlet of the waste water solenoid valve 6 is connected to the waste water outlet of the reverse osmosis membrane filter element 3. The waste water solenoid valve 6 is used to discharge the concentrated water that does not pass through the concentrated water return circuit.

[0061] Further, the purification system further includes a flow meter. The flow meter is located between the electric ball valve 4 and the ejector 5. The water inlet of the flow meter is connected to the water outlet of the electric ball valve 4, and the water outlet of the flow meter is connected to the water inlet of the ejector 5. The flow meter is used to measure the flow rate of the currently returned concentrated water. The flow meter is not shown in the figure.

[0062] Further, the liquid scale inhibitor storage tank 1 is provided with an exhaust hole 7 and a liquid level float 8. The liquid level float 8 is used to detect the liquid level height in the liquid scale inhibitor storage tank 1.

[0063] Further, the purification system may further include a hardness detector 9. The hardness detector 9 is used to detect the hardness data of the tap water to be input into the reverse osmosis membrane filter element 3.

[0064] Further, as Figure 1 shown, the purification system may further include a pretreatment filter element 10, a solenoid valve 11, a check valve 12, a post-treatment filter element 13, a solenoid valve 14, a water purification tank 15 (including an exhaust hole 16 and a liquid level float 17), a solenoid valve 18, and a solenoid valve 19.

[0065] Among them, the pretreatment filter element 10 may be a polypropylene melt-blown filter element, or a filter element composed of a polypropylene melt-blown filter element and a carbon rod, or a hollow fiber membrane filter element, or a composite filter element of a hollow fiber membrane and a carbon rod. The booster self-priming pump 2 has both a boosting function and a self-priming function. The post-treatment filter element 13 may be a carbon rod, or granular activated carbon, or a composite filter element of a carbon rod and an ultrafiltration membrane. The water inlet of the check valve 12 is connected in parallel with the water inlet of the booster self-priming pump 2. The waste water (i.e., concentrated water) of the reverse osmosis membrane filter element 3 is divided into two paths. One path is connected to the water inlet of the waste water solenoid valve 6, and the other path is connected to the water inlet of the electric ball valve 4. The liquid level float 8 can send two signals of high water level and low water level. The water outlet of the post-treatment filter element 13 is divided into two paths. One path is directly connected to the water inlet of the solenoid valve 19, and the other path is connected to the water outlet of the solenoid valve 14. The water inlet of the solenoid valve 14 is connected to the water outlet of the water purification tank 15. The water purification tank 15 has an exhaust hole 16 and a liquid level float 17. The liquid level float 17 can send two signals of high water level and low water level.

[0066] Before the purification system makes water, it needs to perform the following actions first: first, detect the water level of the purified water in the water purification tank 15. If the liquid level float 17 in the water purification tank 15 detects that the water level is less than or equal to the low water level, then first open the solenoid valve 11, the booster self-priming pump 2, and the solenoid valve 14 until the liquid level float 17 detects the high water level. At this time, if water making is required, then open the solenoid valve 11, the booster self-priming pump 2, and the solenoid valve 19 at this time.

[0067] The purification system can also implement the function of purifying and washing the membrane under two preset conditions. The first is when the purification system continuously produces water for more than 6 hours. At this time, the purification system detects whether the water level in the pure water tank 15 is greater than the low water level. The preset height of the low water level is much higher than the water outlet of the high-level pure water tank 15. If the water in the pure water tank 15 is lower than the preset height of the low water level, then open the solenoid valve 14, solenoid valve 11, and booster self-priming pump 2, and close the solenoid valve 19 until the liquid level float ball 17 in the pure water tank 15 detects the high water level. At this time, open the solenoid valve 18, booster self-priming pump 2, and waste water solenoid valve 6 for 60 seconds to wash the reverse osmosis membrane filter element 3. After the washing is completed, if it is necessary to continue producing water, it can enter the water production mode. If it is not necessary to produce water, the above components can be turned off. The second is when the water production mode stops, the system needs to run the above process to wash the reverse osmosis membrane filter element 3.

[0068] The above purification system is a system composition shown according to an embodiment of the present application, and does not limit the application scope of a method for concentrating water reflux provided by the present application.

[0069] Please refer to Figure 2 , Figure 2 which is a flowchart of a method for controlling concentrated water reflux provided by an embodiment of the present application. The present application provides the method operation steps as described in the embodiment or flowchart, but based on routine or non-creative labor, it may include more or fewer operation steps. The step sequence listed in the embodiment is only one way among the execution sequences of many steps and does not represent the only execution sequence. When the actual system or server product executes, it can be executed in the order shown in the embodiment or the drawing or executed in parallel (for example, in an environment of parallel processors or multi-threaded processing). As Figure 2 shown, a method for controlling concentrated water reflux provided by an embodiment of the present application can be applied to a purification system as shown in Figure 1 Specifically, it may include the following steps:

[0070] S210: During the purification process, obtain the current hardness data of the tap water to be input to the reverse osmosis membrane filter element.

[0071] In an embodiment of the present application, during the water production process of the purification system, the current hardness data of the tap water to be input to the reverse osmosis membrane filter element is determined by a hardness detector in the purification system.

[0072] S220: Based on the corresponding relationship between the preset operation gear and the hardness data, determine the current operation gear corresponding to the current hardness data, so that the electric ball valve operates according to the current operation gear. The electric ball valve is used to control the flow rate of the current reflux concentrated water.

[0073] In the embodiments of the present application, whether to trigger the recirculation of the concentrated water is determined by the magnitude of the current hardness data. Among them, the currently recirculated concentrated water is the concentrated water discharged by some or all of the reverse osmosis membrane filters. The concentrated water discharged by the reverse osmosis membrane filters can also be directly discharged.

[0074] In an exemplary embodiment, the correspondence between the preset operating gears and the hardness data can be expressed as:

[0075] When the current hardness data is less than or equal to 100 mg / L, it is determined that the current operating gear is the first gear;

[0076] When the current hardness data is between 100 mg / L and 300 mg / L, it is determined that the current operating gear is the second gear;

[0077] When the current hardness data is greater than or equal to 300 mg / L, it is determined that the current operating gear is the third gear;

[0078] Among them, the flow rate of the recirculated concentrated water corresponding to the first gear is lower than the flow rate of the recirculated concentrated water corresponding to the second gear, and the flow rate of the recirculated concentrated water corresponding to the second gear is lower than the flow rate of the recirculated concentrated water corresponding to the third gear.

[0079] In the above embodiments, the specific hardness data, the number of gears, and the flow rate of the recirculated concentrated water corresponding to each gear can be set according to the actual operation effect of the purification system. This is only an example here.

[0080] In an embodiment of the present application, before operating the electric ball valve, the method further includes:

[0081] Determine the first liquid level height of the first liquid level float ball in the liquid scale inhibitor storage tank;

[0082] When the first liquid level height is lower than the first preset water level, replenish the liquid scale inhibitor into the liquid scale inhibitor storage tank until the first liquid level height reaches the second preset water level, where the first preset water level is lower than the second preset water level.

[0083] Among them, the first preset water level can correspond to the low water level height in the preset liquid scale inhibitor storage tank, and the second preset water level can correspond to the high water level height in the preset liquid scale inhibitor storage tank.

[0084] In the above embodiments, the first liquid level height being lower than the first preset water level, that is, indicating that the amount of the liquid scale inhibitor stored in the liquid scale inhibitor storage tank is relatively insufficient. Timely replenishing the liquid scale inhibitor into the liquid scale inhibitor storage tank can meet the subsequent requirement of replenishing the scale inhibitor into the recirculated concentrated water, and effectively delay the calcification and fouling of the membrane elements.

[0085] S230: Obtain the liquid scale inhibitor with a target content that matches the flow rate of the current concentrated water in reflux from the liquid scale inhibitor storage tank through a jet ejector.

[0086] A jet ejector, also known as a water ejector, is a device used to generate the vacuum required for operation and to generate a solution. According to the flow rate of the current concentrated water in reflux and the preset content ratio of the liquid scale inhibitor, the target content of the liquid scale inhibitor to be aspirated currently can be determined.

[0087] Furthermore, the content of the liquid scale inhibitor can be increased as the pressure in front of the membrane increases and the flow rate of the concentrated water in reflux increases, which can delay the calcification and fouling of the membrane element and effectively protect the membrane element.

[0088] S240: Mix the liquid scale inhibitor with the target content with the current concentrated water in reflux through a jet ejector to obtain a first mixed liquid, and input the first mixed liquid into the reverse osmosis membrane filter element through a booster self-priming pump.

[0089] Specifically, mix the liquid scale inhibitor and the current concentrated water in reflux in the chamber of the jet ejector to obtain a first mixed liquid.

[0090] In an embodiment of the present application, the method further includes:

[0091] Mix the tap water to be input into the reverse osmosis membrane filter element with the first mixed liquid through a booster self-priming pump to obtain a second mixed liquid;

[0092] Pressurize the second mixed liquid through a booster self-priming pump to input it into the reverse osmosis membrane filter element.

[0093] In the above embodiment, the tap water to be input into the reverse osmosis membrane filter element can be, as Figure 1 shown, the water filtered by the pretreatment filter element.

[0094] As can be seen from the above embodiment, in the purification process of the solution provided by the present application, according to the current hardness data of the tap water to be input into the reverse osmosis membrane filter element, the corresponding current operation gear is determined, so that the electric ball valve operates according to the current operation gear to effectively control the flow rate of the current concentrated water in reflux; at the same time, through a jet ejector, obtain the liquid scale inhibitor with a target content that matches the flow rate of the current concentrated water in reflux from the liquid scale inhibitor storage tank, and then mix the liquid scale inhibitor with the target content with the current concentrated water in reflux to obtain a first mixed liquid, and then input the first mixed liquid into the reverse osmosis membrane filter element through a booster self-priming pump. The present application effectively controls the flow rate of the current concentrated water in reflux in real time, improves the utilization effect of the concentrated water reflux, and further improves the purification effect. At the same time, it also controls the content of the liquid scale inhibitor in real time, which can effectively protect the membrane element and extend the service life of the device.

[0095] The embodiment of the present application also provides a concentrated water reflux control device, as Figure 3 shown. The device may include:

[0096] A current hardness data acquisition module 310, configured to acquire current hardness data of tap water to be input to a reverse osmosis membrane filter element during the purification process;

[0097] A current operating gear determination module 320, configured to determine a current operating gear corresponding to the current hardness data based on a correspondence between a preset operating gear and hardness data, so that an electric ball valve operates according to the current operating gear. The electric ball valve is used to control the flow rate of current reflux concentrated water, and the current reflux concentrated water is concentrated water discharged from part or all of the reverse osmosis membrane filter elements;

[0098] A liquid scale inhibitor acquisition module 330, configured to acquire a target content of liquid scale inhibitor matching the flow rate of the current reflux concentrated water from a liquid scale inhibitor storage tank through a jet injector;

[0099] A first mixing module 340, configured to mix the target content of liquid scale inhibitor with the current reflux concentrated water through the jet injector to obtain a first mixed liquid, so that a booster self-priming pump inputs the first mixed liquid into the reverse osmosis membrane filter element.

[0100] In an embodiment of the present application, the device further includes:

[0101] A first liquid level height determination module, configured to determine a first liquid level height at which a first liquid level float in the liquid scale inhibitor storage tank is located;

[0102] A liquid scale inhibitor replenishment module, configured to replenish liquid scale inhibitor into the liquid scale inhibitor storage tank until the first liquid level height reaches a second preset water level when the first liquid level height is lower than a first preset water level, and the first preset water level is lower than the second preset water level.

[0103] In an embodiment of the present application, the device further includes:

[0104] A second mixing module, configured to mix the tap water to be input to the reverse osmosis membrane filter element with the first mixed liquid through the booster self-priming pump to obtain a second mixed liquid;

[0105] A boosting module, configured to pressurize the second mixed liquid through the booster self-priming pump to input it into the reverse osmosis membrane filter element.

[0106] In an embodiment of the present application, the current operating gear determination module 320 includes:

[0107] A first determination unit, configured to determine that the current operation gear is the first gear when the current hardness data is less than or equal to 100 mg / L;

[0108] A second determination unit, configured to determine that the current operation gear is the second gear when the current hardness data is between 100 mg / L and 300 mg / L;

[0109] A third determination unit, configured to determine that the current operation gear is the third gear when the current hardness data is greater than or equal to 300 mg / L;

[0110] Wherein, the flow rate of the reflux concentrated water corresponding to the first gear is lower than the flow rate of the reflux concentrated water corresponding to the second gear, and the flow rate of the reflux concentrated water corresponding to the second gear is lower than the flow rate of the reflux concentrated water corresponding to the third gear.

[0111] It should be noted that, for the device provided in the above embodiment, when realizing its functions, only the division of the above function modules is used for illustration. In actual applications, the above functions can be allocated to different function modules according to needs, that is, the internal structure of the device is divided into different function modules to complete all or part of the functions described above. In addition, the device provided in the above embodiment and the method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0112] An embodiment of the present application provides a computer device, which includes a processor and a memory. At least one instruction or at least one program segment is stored in the memory, and the at least one instruction or the at least one program segment is loaded and executed by the processor to implement a concentrated water reflux control method as provided in the above method embodiment.

[0113] Figure 4 A hardware structure diagram of a device for implementing a concentrated water reflux control method provided in an embodiment of the present application is shown. The device may participate in forming or include the device or system provided in the embodiment of the present application. As Figure 4 shown, the device 10 may include one or more (shown as 1002a, 1002b,..., 1002n in the figure) processors 1002 (the processor 1002 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 1004 for storing data, and a transmission device 1006 for communication functions. In addition, it may further include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply, and / or a camera. Those of ordinary skill in the art can understand, Figure 4The structure shown is only illustrative and does not limit the structure of the above electronic device. For example, device 10 may also include more or fewer components than those shown in Figure 4 or have a different configuration from that shown in Figure 4 .

[0114] It should be noted that one or more of the above processors 1002 and / or other data processing circuits may generally be referred to as "data processing circuits" herein. The data processing circuit may be embodied in whole or in part as software, hardware, firmware, or any combination thereof. In addition, the data processing circuit may be a single independent processing module, or may be incorporated in whole or in part into any one of the other elements in device 10 (or a mobile device). As involved in the embodiments of the present application, the data processing circuit is a processor control (such as the selection of a variable resistance terminal path connected to an interface).

[0115] The memory 1004 can be used to store software programs and modules of application software, such as the program instructions / data storage devices corresponding to the methods described in the embodiments of the present application. The processor 1002 executes various functional applications and data processing by running the software programs and modules stored in the memory 1004, that is, to implement the above-described method for controlling the return of concentrated water. The memory 1004 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some instances, the memory 1004 may further include a memory remotely disposed relative to the processor 1002, and these remote memories may be connected to device 10 through a network. Examples of the above networks include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0116] The transmission device 1006 is used to receive or send data via a network. Specific examples of the above network may include a wireless network provided by a communication provider of device 10. In one instance, the transmission device 1006 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station and thus can communicate with the Internet. In one instance, the transmission device 1006 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0117] The display may be, for example, a touch-screen liquid crystal display (LCD), which enables a user to interact with the user interface of device 10 (or a mobile device).

[0118] The embodiment of the present application further provides a computer-readable storage medium, which can be disposed in a server to store at least one instruction or at least one segment of program related to a concentrated water reflux control method in the method embodiment. The at least one instruction or the at least one segment of program is loaded and executed by the processor to implement the concentrated water reflux control method provided in the above method embodiment.

[0119] Optionally, in this embodiment, the above storage medium may be located in at least one of multiple network servers in a computer network. Optionally, in this embodiment, the above storage medium may include, but is not limited to: various media that can store program codes such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs.

[0120] The embodiment of the present invention further provides a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes a concentrated water reflux control method provided in the above various optional embodiments.

[0121] It should be noted that: the above sequence of the embodiments of the present application is only for description and does not represent the superiority or inferiority of the embodiments. And the above specific embodiments of the present application have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims may be executed in a different order from that in the embodiments and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0122] Each embodiment in the present application is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments of the device, equipment, and storage medium, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiments.

[0123] Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium, and the above-mentioned storage medium can be a read-only memory, a magnetic disk, or an optical disc, etc.

[0124] The foregoing are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A concentrated water reflux control method, characterized in that, The method includes: During the purification process, obtaining the current hardness data of the tap water to be input into the reverse osmosis membrane filter element; Based on the corresponding relationship between the preset operating gear and the hardness data, determining the current operating gear corresponding to the current hardness data, so that the electric ball valve operates according to the current operating gear. The electric ball valve is used to control the flow rate of the current returned concentrated water, and the current returned concentrated water is the concentrated water discharged from part or all of the reverse osmosis membrane filter elements; Through the ejector, obtaining a target content of liquid scale inhibitor from the liquid scale inhibitor storage tank that matches the flow rate of the current returned concentrated water; Through the ejector, mixing the target content of liquid scale inhibitor with the current returned concentrated water to obtain a first mixed liquid, so as to input the first mixed liquid into the reverse osmosis membrane filter element through a booster self-priming pump.

2. The method according to claim 1, characterized in that Before operating the electric ball valve, the method further includes: Determining the first liquid level height at which the first liquid level float ball in the liquid scale inhibitor storage tank is located; When the first liquid level height is lower than the first preset water level, supplementing liquid scale inhibitor into the liquid scale inhibitor storage tank until the first liquid level height reaches the second preset water level, where the first preset water level is lower than the second preset water level.

3. The method according to claim 1, characterized in that The method further includes: Through the booster self-priming pump, mixing the tap water to be input into the reverse osmosis membrane filter element with the first mixed liquid to obtain a second mixed liquid; Through the booster self-priming pump, pressurizing the second mixed liquid to input it into the reverse osmosis membrane filter element.

4. The method according to claim 1, wherein The determining the current operating gear corresponding to the current hardness data based on the corresponding relationship between the preset operating gear and the hardness data includes: When the current hardness data is less than or equal to 100 mg / L, determining the current operating gear as the first gear; When the current hardness data is between 100 mg / L and 300 mg / L, determining the current operating gear as the second gear; When the current hardness data is greater than or equal to 300 mg / L, determining the current operating gear as the third gear; Wherein, the flow rate of the returned concentrated water corresponding to the first gear is lower than the flow rate of the returned concentrated water corresponding to the second gear, and the flow rate of the returned concentrated water corresponding to the second gear is lower than the flow rate of the returned concentrated water corresponding to the third gear.

5. A concentrated water reflux control device, characterized in that, The device includes: A current hardness data acquisition module, which is used to obtain the current hardness data of the tap water to be input into the reverse osmosis membrane filter element during the purification process; A current operating gear determination module, which is used to determine the current operating gear corresponding to the current hardness data based on the corresponding relationship between the preset operating gear and the hardness data, so that the electric ball valve operates according to the current operating gear. The electric ball valve is used to control the flow rate of the current returned concentrated water, and the current returned concentrated water is the concentrated water discharged from part or all of the reverse osmosis membrane filter elements; A liquid scale inhibitor acquisition module, which is used to obtain a target content of liquid scale inhibitor from the liquid scale inhibitor storage tank that matches the flow rate of the current returned concentrated water through an ejector; A first mixing module, configured to mix the liquid scale inhibitor with the target content and the current return concentrated water through the ejector to obtain a first mixed liquid, so that the booster self-priming pump inputs the first mixed liquid into the reverse osmosis membrane filter element.

6. A purification system, characterized in that, The purification system includes a concentrated water return circuit and a liquid scale inhibitor storage tank. The concentrated water return circuit includes a booster self-priming pump, a reverse osmosis membrane filter element, an electric ball valve, and an ejector. The water outlet of the booster self-priming pump is connected to the water inlet of the reverse osmosis membrane filter element. The concentrated water outlet of the reverse osmosis membrane filter element is connected to the water inlet of the electric ball valve. The electric ball valve is used to control the flow rate of the current return concentrated water, and the operating gear of the electric ball valve is associated with the hardness data of the tap water to be input into the reverse osmosis membrane filter element. The water outlet of the electric ball valve is connected to the water inlet of the ejector. The suction port of the ejector is connected to the liquid outlet of the liquid scale inhibitor storage tank. The ejector is configured to suck the liquid scale inhibitor with the target content into the concentrated water return circuit according to the flow rate of the current return concentrated water, and mix the liquid scale inhibitor with the target content and the current return concentrated water. The water outlet of the ejector is connected to the water inlet of the booster self-priming pump.

7. The purification system according to claim 6, characterized in that, The purification system further includes a waste water solenoid valve. The water inlet of the waste water solenoid valve is connected to the waste water outlet of the reverse osmosis membrane filter element. The waste water solenoid valve is used to discharge the concentrated water that has not passed through the concentrated water return circuit.

8. The purification system according to claim 6, characterized in that, The purification system further includes a flow meter. The flow meter is located between the electric ball valve and the ejector. The water inlet of the flow meter is connected to the water outlet of the electric ball valve, and the water outlet of the flow meter is connected to the water inlet of the ejector. The flow meter is used to measure the flow rate of the current return concentrated water.

9. The purification system according to claim 6, wherein The liquid scale inhibitor storage tank is provided with a first exhaust hole and a first liquid level float ball. The first liquid level float ball is used to detect the liquid level height in the liquid scale inhibitor storage tank.

10. The purification system according to claim 6, characterized in that, The purification system may further include a hardness detector, which is used to detect the hardness data of the tap water to be input into the reverse osmosis membrane filter element.

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