Control method, device, equipment, storage medium and program product of water production system

Abstract

This application relates to a control method, apparatus, equipment, storage medium, and program product for a water purification system. The method includes: setting the starting liquid level values ​​of a first reverse osmosis device and a second reverse osmosis device to a first water level value and a second water level value, respectively; the first water level value is greater than the second water level value; when the liquid level in the pure water tank is detected to drop to the first water level value, the first reverse osmosis device is started, producing pure water and delivering it to the pure water tank; when the liquid level in the pure water tank rises to a preset high water level value, the starting liquid level values ​​of the first and second reverse osmosis devices are exchanged, so that the second reverse osmosis device is started the next time the liquid level in the pure water tank drops. This effectively balances the workload of each reverse osmosis device, extending the service life of the water purification system. Furthermore, it reduces the amount of cleaning wastewater generated per cycle, lowers the risk of cleaning wastewater overflow, and improves the utilization rate of cleaning wastewater.

Description

Technical Field

[0001] This application relates to the field of water purification technology, and in particular to a control method, apparatus, equipment, storage medium, and program product for a water purification system. Background Technology

[0002] Reverse osmosis (RO) equipment is a commonly used water treatment system that produces pure water using RO technology. Because RO equipment is easy to operate, reliable, and has low operating costs, it is widely used in the tobacco processing industry to produce pure water.

[0003] Currently, tobacco processing workshops typically use multiple reverse osmosis (RO) units to produce pure water. During this process, the RO units generate wastewater for self-cleaning, which can be recycled and reused, for example, for routine floor cleaning. However, the simultaneous use of multiple RO units often results in a large amount of wastewater, exceeding the capacity of the wastewater recycling equipment and causing overflow, thus reducing the utilization rate of the wastewater. Summary of the Invention

[0004] Therefore, it is necessary to provide a control method, device, equipment, storage medium, and program product for a water purification system to address the aforementioned technical problems.

[0005] In a first aspect, this application provides a control method for a water purification system, the water purification system including a first reverse osmosis device and a second reverse osmosis device, the method comprising: setting the respective start-up liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device to a first water level value and a second water level value, respectively; the first water level value being greater than the second water level value; when the liquid level of the pure water tank is detected to drop to the first water level value, starting the first reverse osmosis device, so that the first reverse osmosis device produces pure water and delivers the pure water to the pure water tank; when the liquid level of the pure water tank rises to a preset high water level value, exchanging the start-up liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device, so that the second reverse osmosis device is started the next time the liquid level of the pure water tank drops.

[0006] In an optional embodiment, the first reverse osmosis device includes a filter, a high-pressure pump, and a reverse osmosis membrane assembly connected in sequence; the step of starting the first reverse osmosis device when the liquid level in the pure water tank drops to the first water level value, so that the first reverse osmosis device produces pure water and delivers the pure water to the pure water tank, includes: when the liquid level in the pure water tank drops to the first water level value, starting the first reverse osmosis device, so that the first reverse osmosis device filters out particulate matter in the raw water through the filter and delivers it to the high-pressure pump, pressurizes the filtered raw water through the high-pressure pump and delivers it to the reverse osmosis membrane assembly, and performs reverse osmosis separation on the pressurized raw water through the reverse osmosis membrane assembly, and delivers the obtained pure water to the pure water tank.

[0007] In an optional embodiment, the method further includes: when the liquid level in the pure water tank rises to a preset high water level value, cleaning the reverse osmosis membrane module in the first reverse osmosis device and conveying the cleaned wastewater to a wastewater recycling device.

[0008] In an optional embodiment, the method further includes: during the process of producing pure water using the first reverse osmosis device, if an abnormality is detected in the first reverse osmosis device, when the liquid level in the pure water tank is detected to drop to the second water level value, the second reverse osmosis device is started, so that the second reverse osmosis device produces pure water and delivers the pure water to the pure water tank.

[0009] In an optional implementation, the method further includes: if an abnormality is detected in the first reverse osmosis device during the process of producing pure water, an alarm is triggered.

[0010] In an optional implementation, the method further includes: when a water usage instruction is received, drawing pure water from the pure water tank, controlling the sterilization device to sterilize the drawn pure water, and delivering the sterilized pure water to the water-using equipment.

[0011] Secondly, this application also provides a control device for a water purification system, the water purification system including a first reverse osmosis device and a second reverse osmosis device, the device including: a setting module, used to set the starting liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device to a first water level value and a second water level value respectively; the first water level value is greater than the second water level value; a water purification module, used to start the first reverse osmosis device when the liquid level of the pure water tank is detected to drop to the first water level value, so that the first reverse osmosis device produces pure water and delivers the pure water to the pure water tank; when the liquid level of the pure water tank rises to a preset high water level value, the starting liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device are exchanged, so that the second reverse osmosis device is started the next time the liquid level of the pure water tank drops.

[0012] Thirdly, this application provides a computer device including a processor and a memory, wherein the memory stores a computer program, and when the processor executes the computer program, it implements the steps of the method described in any of the foregoing embodiments.

[0013] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any of the foregoing embodiments.

[0014] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method described in any of the foregoing embodiments.

[0015] The control method, apparatus, equipment, storage medium, and program product for a water purification system provided in this application embodiment include: setting the starting liquid level values ​​of a first reverse osmosis device and a second reverse osmosis device to a first water level value and a second water level value, respectively; the first water level value is greater than the second water level value; when the liquid level in the pure water tank is detected to drop to the first water level value, the first reverse osmosis device is started, causing the first reverse osmosis device to produce pure water and transport the pure water to the pure water tank; when the liquid level in the pure water tank rises to a preset high water level value, the starting liquid level values ​​of the first and second reverse osmosis devices are exchanged, so that the second reverse osmosis device is started the next time the liquid level in the pure water tank drops. By setting the starting liquid level values ​​of different reverse osmosis devices to different water level values, and starting a single reverse osmosis device to produce pure water when the liquid level in the pure water tank drops to the maximum starting liquid level value, and exchanging the starting liquid level values ​​of the reverse osmosis devices when the liquid level in the pure water tank rises to the high water level value, the reverse osmosis devices are started alternately. This effectively balances the workload of each reverse osmosis device and extends the service life of the water purification system. It can also reduce the amount of cleaning wastewater generated per cycle, reduce the risk of cleaning wastewater overflow, and improve the utilization rate of cleaning wastewater. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 The illustration shows an application scenario provided by an embodiment of this application;

[0018] Figure 2A schematic flowchart of a water purification system control method provided in an embodiment of this application is shown;

[0019] Figure 3 An example diagram of a water purification system provided in an embodiment of this application is shown;

[0020] Figure 4 This application provides a functional block diagram of a control device for a water purification system according to an embodiment of the present application.

[0021] Figure 5 A schematic diagram of the internal structure of a computer device provided in an embodiment of this application is shown. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0024] The water purification system control method provided in this application embodiment can be applied to, for example... Figure 1 The application environment shown includes control equipment and a water purification system. The water purification system comprises multiple reverse osmosis (RO) units, and the control equipment is communicatively connected to each RO unit. The control equipment can be a controller or a terminal. For example, the controller can be a PLC (Programmable Logic Controller). The terminal can be, but is not limited to, various personal computers, laptops, smartphones, tablets, etc.

[0025] The following section will use a control device as the executing entity to describe the various steps in the methods provided in the embodiments of this application, as well as the corresponding technical effects. Please refer to... Figure 2 This is a flowchart illustrating a control method for a water purification system provided in an embodiment of this application, including steps 210 to 230.

[0026] Step 210: Set the starting liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device to the first water level value and the second water level value, respectively.

[0027] The water treatment system can include two reverse osmosis (RO) units, namely the first RO unit and the second RO unit, or it can include three or more RO units. RO equipment refers to water treatment equipment that uses RO technology to produce pure water.

[0028] The starting liquid level value refers to the liquid level value that triggers the start-up of the reverse osmosis equipment. For example, the starting liquid level value of the first reverse osmosis equipment is a first water level value, and the starting liquid level value of the second reverse osmosis equipment is a second water level value, and the first water level value is greater than the second water level value, for example, the first water level value is 1 cm greater than the second water level value. It is understood that the specific values ​​or difference between the first and second water level values ​​can be set according to the actual situation, and this application embodiment does not limit it.

[0029] In some embodiments, the control device can set the starting liquid level values ​​of each of the multiple reverse osmosis units in the water purification system to different water level values. For example, in the case where the water purification system includes two reverse osmosis units, the control device sets the starting liquid level value of the first reverse osmosis unit to a first water level value and sets the starting liquid level value of the second reverse osmosis unit to a second water level value, wherein the first water level value is greater than the second water level value.

[0030] It is understandable that by setting different starting liquid level values ​​for different reverse osmosis devices, multiple reverse osmosis devices can be started alternately. That is, as the liquid level in the pure water tank drops, the liquid level in the pure water tank will first pass through the first higher water level value, thus only triggering the reverse osmosis device with the starting liquid level value of the first water level value. In other words, only one reverse osmosis device will be started each time water is produced.

[0031] Step 220: When the liquid level in the pure water tank drops to the first water level value, the first reverse osmosis device is started, so that the first reverse osmosis device produces pure water and delivers the pure water to the pure water tank.

[0032] Pure water refers to water obtained after undergoing a complete reverse osmosis treatment process. A pure water tank is a water tank used to store pure water. It is connected to each reverse osmosis unit in the water production system through pipelines, and the pure water in the pure water tank is used to transport water to the water-using equipment in the workshop.

[0033] In some embodiments, the purified water in the pure water tank is delivered to water-using equipment in the workshop for industrial production, meaning the liquid level in the pure water tank will change. The control device can detect the liquid level in the pure water tank using an ultrasonic level sensor. When the liquid level in the pure water tank drops to a first water level value, since the first water level value is the start-up water level value for the first reverse osmosis unit, the first reverse osmosis unit is started. For example, the control device sends a start-up command to the first reverse osmosis unit. Upon receiving the start-up command, the first reverse osmosis unit begins producing pure water and delivers the produced pure water to the pure water tank through pipelines.

[0034] Step 230: When the liquid level in the pure water tank rises to the preset high water level value, the start-up liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device are exchanged, so that the second reverse osmosis device will start when the liquid level in the pure water tank drops next time.

[0035] The high water level can be understood as a pre-set water level indicating sufficient pure water in the pure water tank, and the high water level is always greater than the starting liquid level of each reverse osmosis unit. For example, the high water level is greater than the first water level and the second water level.

[0036] In some embodiments, as the first reverse osmosis unit begins producing pure water and delivering it to the pure water tank, the liquid level in the pure water tank gradually rises. That is, during the water production process of the first reverse osmosis unit, the liquid level in the pure water tank changes from a downward trend to an upward trend and continues to rise. The control device continuously monitors the liquid level in the pure water tank using an ultrasonic level sensor. When the liquid level in the pure water tank is detected to have risen to a preset high water level value, the control device stops producing pure water and performs an operation to exchange the starting liquid level values ​​of the first and second reverse osmosis units. Specifically, the control device changes the starting liquid level value of the first reverse osmosis unit from its original first water level value to a second water level value, and changes the starting liquid level value of the second reverse osmosis unit from its original second water level value to a first water level value.

[0037] Understandably, after exchanging the starting liquid level values, the starting liquid level of the first reverse osmosis unit becomes the lower second water level value, while the starting liquid level of the second reverse osmosis unit becomes the higher first water level value. Therefore, when the pure water tank level drops again due to subsequent water usage, the tank level will first drop to the higher first water level value, at which point the second reverse osmosis unit will start, not the first. Thus, by exchanging the starting liquid level values ​​of the two reverse osmosis units at high water levels, the alternating start-up of the first and second reverse osmosis units in different water production cycles is achieved. Furthermore, in practical applications, because the first water level value is greater than the second water level value, the first water level value is reached first when the water level drops. Therefore, the unit with the starting liquid level value set to the first water level will be started first, while the unit with the starting liquid level value set to the second water level will be used for subsequent supplementary or backup startup.

[0038] In this embodiment, different reverse osmosis (RO) units are set with different starting liquid levels. When the pure water tank level drops to the maximum starting liquid level, a single RO unit is activated to produce pure water. When the pure water tank level rises to a high level, the starting liquid level of the RO units is switched, allowing the RO units to start alternately. This effectively balances the workload of each RO unit, extending the lifespan of the water purification system. Furthermore, it reduces the amount of cleaning wastewater generated per cycle, lowers the risk of cleaning wastewater overflow, and improves the utilization rate of cleaning wastewater.

[0039] Optionally, for step 220, this application embodiment provides a possible implementation method, namely: when the liquid level of the pure water tank is detected to drop to the first water level value, the first reverse osmosis device is started, so that the first reverse osmosis device filters out particulate matter in the raw water through the filter and delivers it to the high-pressure pump, and pressurizes the filtered raw water through the high-pressure pump and delivers it to the reverse osmosis membrane module, and performs reverse osmosis separation on the pressurized raw water through the reverse osmosis membrane module, and delivers the obtained pure water to the pure water tank.

[0040] The reverse osmosis equipment includes an inlet valve, a filter, a high-pressure pump, a reverse osmosis membrane module, and a flushing valve connected in sequence. For ease of understanding, an example diagram of a water purification system is provided in this application embodiment. Please refer to... Figure 3 This includes a first reverse osmosis unit, a second reverse osmosis unit, a pure water tank, a sterilization device, and a water supply device. The first and second reverse osmosis units each include an inlet valve, a filter, a high-pressure pump, a reverse osmosis membrane module, and a flushing valve connected in sequence. The reverse osmosis membrane modules of each unit are connected to the pure water tank via pipelines. The pure water tank is also connected to the sterilization device via pipelines, and the sterilization device is also connected to the water supply device. The following will describe... Figure 3 The process of producing pure water will be explained using the first reverse osmosis unit as an example.

[0041] First, after the first reverse osmosis unit starts up, it opens its inlet valve to allow raw water to enter the filter. Then, the filter pre-treats the raw water by passing it through a multi-media filtration unit and a security filtration unit to remove suspended solids, colloids, organic matter, and particles larger than 5 micrometers, meeting the feed water requirements of the reverse osmosis membrane. The filtered raw water is then transported from the filter outlet to the inlet of the high-pressure pump. Next, the high-pressure pump pressurizes the filtered raw water, for example, increasing the pressure to 0.8~1.2 MPa, raising it to the working pressure required for reverse osmosis separation, and then transports the pressurized raw water to the inlet of the reverse osmosis membrane module. Immediately afterwards, the reverse osmosis membrane module utilizes the selective permeation characteristics of the reverse osmosis membrane to perform reverse osmosis separation on the pressurized raw water. During the reverse osmosis separation process, water molecules in the raw water permeate through the reverse osmosis membrane under pressure, forming pure water, while dissolved salts, organic matter, bacteria, and other impurities in the raw water are retained by the reverse osmosis membrane and discharged with the concentrate. Under pressure, water molecules pass through a spiral-wound semi-permeable membrane to become pure water, while dissolved solids, bacteria, and other impurities in the water are trapped by the membrane and discharged with the concentrated water. The reverse osmosis membrane module then transports the separated pure water from the pure water outlet to the pure water tank, causing the liquid level in the tank to gradually rise.

[0042] In this embodiment, the filter serves as a pretreatment unit, pre-treating the raw water to remove particulate matter. This prevents particulate matter from entering the high-pressure pump and reverse osmosis membrane module, causing equipment wear or membrane fouling, thus ensuring the normal operation of the subsequent high-pressure pump and reverse osmosis membrane module. The high-pressure pump, as the power unit, provides the necessary operating pressure for the reverse osmosis separation process, ensuring that the raw water can overcome osmotic pressure and smoothly pass through the reverse osmosis membrane. The reverse osmosis membrane module, as the core separation unit, effectively separates pure water from impurities. Therefore, this water production process not only achieves stable pure water production but also protects the high-pressure pump and reverse osmosis membrane module through pre-filtration, reducing equipment failure rate and maintenance costs, and extending the service life of the reverse osmosis membrane.

[0043] Optionally, after step 220, this application embodiment provides a possible implementation method, namely: when the liquid level in the pure water tank rises to a preset high water level value, the reverse osmosis membrane module in the first reverse osmosis device is cleaned, and the cleaned wastewater is transported to the wastewater recycling device.

[0044] Understandably, when the liquid level in the pure water tank is detected to rise to the preset high water level, it indicates that the first reverse osmosis unit has just completed the water production process of raising the liquid level in the pure water tank from the first water level to the high water level, meaning that the first reverse osmosis unit is in the stage of preparing to enter standby mode. At this time, in addition to exchanging the start-up liquid level values ​​of the first and second reverse osmosis units, a cleaning process for the reverse osmosis membrane module in the first reverse osmosis unit will also be initiated.

[0045] In some embodiments, the cleaning process is as follows: The flushing valve of the first reverse osmosis unit is opened to allow cleaning water to flow over the membrane surface of the reverse osmosis membrane module, flushing away contaminants attached to the membrane surface to remove scale, colloidal contaminants, and microorganisms accumulated during the water production process. A cleaning time can be set, such as 1 minute. After the cleaning time is reached, the flushing valve is closed, ending the cleaning process. After cleaning, the cleaning wastewater carrying contaminants is discharged from the wastewater discharge port of the reverse osmosis membrane module and transported to a wastewater recovery device. Simultaneously, the first reverse osmosis unit enters standby mode.

[0046] In this embodiment, the reverse osmosis membrane module of the first reverse osmosis unit, which has just completed water production, is cleaned at a high water level. This utilizes the idle period after the water production task is completed, eliminating the need for additional shutdowns or interruptions to the normal water production process. The cleaning timing naturally aligns with the equipment's operating cycle. Furthermore, the cleaning wastewater is transported to a wastewater recycling device instead of being directly discarded, enabling centralized collection and subsequent treatment of the wastewater generated during the cleaning process, reducing water waste. Moreover, in practical applications, reverse osmosis membrane modules gradually accumulate contaminants during water production. If cleaning is not performed for a long time, membrane flux will decrease, affecting both water production efficiency and product water quality. By cleaning the reverse osmosis membrane module promptly after each water production task, membrane flux can be effectively restored, maintaining the separation performance and operating efficiency of the reverse osmosis membrane module.

[0047] This can be understood as follows: by adding cleaning operations, not only is regular maintenance of the reverse osmosis membrane module achieved by utilizing the natural gaps in the equipment's operating cycle, but also centralized treatment of clean wastewater is achieved through the installation of wastewater recycling equipment. This ensures the long-term stable operation of the reverse osmosis membrane module while also taking into account the recycling of water resources and environmental protection.

[0048] Optionally, after step 220, this application embodiment provides a possible implementation method, namely: during the process of producing pure water in the first reverse osmosis device, if an abnormality is detected in the first reverse osmosis device, when the liquid level in the pure water tank is detected to drop to the second water level value, the second reverse osmosis device is started, so that the second reverse osmosis device produces pure water and delivers the pure water to the pure water tank.

[0049] In some embodiments, during the period when the first reverse osmosis unit is in operation and producing pure water, the control device monitors the operating status of the first reverse osmosis unit. If an abnormality is detected in the first reverse osmosis unit, such as equipment failure, exceeding operating parameter limits, or a decrease in water production capacity, it indicates that the first reverse osmosis unit may not be able to continue producing pure water normally. In this case, due to the abnormality of the first reverse osmosis unit leading to insufficient pure water replenishment, and as the water-using equipment consumes pure water, the liquid level in the pure water tank will drop. When the liquid level in the pure water tank is detected to drop to a second water level value, since the second water level value is the current start-up liquid level value of the second reverse osmosis unit, the second reverse osmosis unit is started. After the second reverse osmosis unit starts, it begins to produce pure water and continuously delivers the produced pure water to the pure water tank, thereby taking over the pure water production and supply tasks from the malfunctioning first reverse osmosis unit.

[0050] This can be understood as follows: During a normal water production cycle, when the water level in the pure water tank drops to the first water level value, the first reverse osmosis unit is activated, and the water produced by the first reverse osmosis unit causes the water level to rise. If the first reverse osmosis unit malfunctions before the water level rises to the preset high water level value, the water level will stop rising and resume its downward trend. When the water level drops and crosses the second water level value, the second reverse osmosis unit is activated.

[0051] In this embodiment, by setting the second water level as a backup start-up trigger point in case of abnormal conditions, the second reverse osmosis unit can be put into operation in a timely manner when the first reverse osmosis unit malfunctions and the pure water tank level drops back to the second water level, ensuring the continuity of pure water supply. This achieves fault-tolerant operation and seamless switching of the water purification system, ensuring the stability of the pure water tank level and the continuous water supply to water-using equipment, and avoiding the risk of system downtime due to the failure of a single unit.

[0052] Optionally, after step 220, this application embodiment provides a possible implementation method, namely: if an abnormality is detected in the first reverse osmosis device during the production of pure water by the first reverse osmosis device, an alarm is triggered.

[0053] In some embodiments, when an abnormality is detected in the first reverse osmosis unit, such as equipment failure, exceeding operating parameter limits, decreased water production capacity, component damage, or pipeline leakage, the control equipment triggers an alarm. For example, the control equipment activates an alarm device to send an alarm signal to system operators or an external monitoring platform. This alarm signal can be in the form of an audible and visual alarm, a remote communication alarm, or a combination of multiple alarm forms to ensure that abnormal information is transmitted in a timely and effective manner.

[0054] This can be understood as follows: alarm triggering is directly related to the abnormal monitoring results of the first reverse osmosis unit. Abnormal monitoring is a prerequisite for alarm triggering, while the alarm is the specific response action to the abnormal monitoring results. In practical applications, this alarm mechanism can operate in conjunction with the aforementioned backup startup mechanism for starting the second reverse osmosis unit. When the first reverse osmosis unit malfunctions, on the one hand, the liquid level in the pure water tank drops to the second water level value, and the second reverse osmosis unit is started to connect to the water supply control task; on the other hand, an alarm is triggered simultaneously to notify the operators.

[0055] In this embodiment, the alarm mechanism ensures that operators are promptly aware of any abnormal system conditions. Upon receiving an alarm signal, operators can manually intervene in the malfunctioning first reverse osmosis unit, including checking the cause of the fault, performing equipment repairs, or adjusting system operating parameters. In other words, by issuing an alarm signal immediately when the first reverse osmosis unit malfunctions, the alarm mechanism effectively improves the safety and maintainability of the water treatment system. It allows external parties to be aware of abnormal system conditions as soon as possible, thereby shortening the fault response cycle and reducing further damage or water supply risks that may result from continued abnormal equipment operation.

[0056] Optionally, after step 230, this application embodiment provides a possible implementation method, namely: when a water usage instruction is received, pure water is drawn from the pure water tank, and the sterilization device is controlled to sterilize the drawn pure water, and the sterilized pure water is delivered to the water usage equipment.

[0057] Water usage instructions can come from direct requests from water-using devices or from a pre-set timed water supply plan in the water treatment system. Sterilization devices can employ methods such as ultraviolet sterilization, ozone sterilization, or high-temperature sterilization.

[0058] In some embodiments, upon receiving a water usage command, the control device draws stored purified water from a purified water tank. The drawing operation can be achieved using a pump located at the outlet of the purified water tank. After being drawn out, the purified water is not directly delivered to the water-using device, but is first treated by a sterilization device. For example, the control device controls the sterilization device to sterilize the drawn purified water, aiming to kill or remove harmful substances such as microorganisms, bacteria, or viruses that may have grown in the purified water during storage. After sterilization, the purified water's microbiological safety is further improved. Subsequently, the control device controls the water supply device to deliver the sterilized purified water to the water-using device.

[0059] This can be understood as follows: the pure water tank serves as a storage and transfer link for pure water, and the pure water stored inside may be at risk of microbial growth due to long-term storage; the sterilization device, as a treatment link in the water supply path, undertakes the function of terminal disinfection of the pure water to be output; and the water-using equipment, as the final receiving end, obtains safe pure water that has undergone sterilization treatment.

[0060] In this embodiment, by incorporating sterilization treatment at the final stage of water use, the hygiene and safety of the pure water delivered to the water-using equipment are effectively ensured, preventing secondary contamination during storage and transportation from affecting the quality of the final water use. Simultaneously, this water supply process is independent yet organically connected to the aforementioned water production and equipment control processes, together forming a complete closed-loop control system from raw water production to pure water storage and final supply, ensuring that the pure water obtained by the water-using equipment at any time has excellent water quality safety.

[0061] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0062] To perform the corresponding steps in the above embodiments and various possible methods, an implementation of a control device for a water purification system is given below. Please refer to... Figure 4 This is a functional block diagram of the control device for the water purification system provided in this embodiment. It should be noted that the basic principle and technical effects of the control device 300 for the water purification system provided in this embodiment are the same as those in the above embodiments. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above embodiments. The control device 300 for the water purification system includes:

[0063] The setting module 310 is used to set the start-up liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device to the first water level value and the second water level value, respectively; the first water level value is greater than the second water level value.

[0064] The water production module 320 is used to start the first reverse osmosis device when the liquid level of the pure water tank drops to the first water level value, so that the first reverse osmosis device produces pure water and delivers the pure water to the pure water tank; when the liquid level of the pure water tank rises to the preset high water level value, the starting liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device are exchanged, so that the second reverse osmosis device is started when the liquid level of the pure water tank drops again.

[0065] Optionally, the water production module 320 is specifically used to: when the liquid level in the pure water tank drops to a first water level value, start the first reverse osmosis device, so that the first reverse osmosis device filters out particulate matter in the raw water through a filter and delivers it to a high-pressure pump, pressurizes the filtered raw water through the high-pressure pump and delivers it to the reverse osmosis membrane module, and performs reverse osmosis separation on the pressurized raw water through the reverse osmosis membrane module, and delivers the obtained pure water to the pure water tank.

[0066] Optionally, the water production module 320 is also used to: clean the reverse osmosis membrane module in the first reverse osmosis device and transport the cleaned wastewater to the wastewater recycling device when the liquid level in the pure water tank rises to a preset high water level value.

[0067] Optionally, the water production module 320 is also used to: if an abnormality is detected in the first reverse osmosis device during the process of producing pure water in the first reverse osmosis device, then when the liquid level in the pure water tank drops to the second water level value, start the second reverse osmosis device so that the second reverse osmosis device produces pure water and delivers the pure water to the pure water tank.

[0068] Optionally, the water production module 320 is also used to trigger an alarm if an abnormality is detected in the first reverse osmosis device during the process of producing pure water.

[0069] Optionally, the control device 300 of the water purification system also includes a water supply module 330, which is used to draw pure water from the pure water tank when a water usage instruction is received, control the sterilization device to sterilize the drawn pure water, and deliver the sterilized pure water to the water-using equipment.

[0070] Each module in the control device of the aforementioned water purification system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0071] This application also provides a computer device, which may be a terminal, and its internal structure diagram may be as follows: Figure 5As shown, the computer device includes a processor, memory, input / output interfaces, and a communication interface. The processor, memory, and input / output interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the input / output interfaces. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The input / output interfaces are used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When the computer program is executed by the processor, it implements a control method for a water purification system.

[0072] Those skilled in the art will understand that Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0073] This application also provides a computer device, including a processor and a memory. The memory stores a computer program, and when the processor executes the computer program, it implements the control method of the water purification system disclosed in this application.

[0074] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the control method of the water purification system disclosed in this application.

[0075] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the water purification system control method disclosed in this application.

[0076] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A control method for a water purification system, characterized in that, The water purification system includes a first reverse osmosis unit and a second reverse osmosis unit, and the method includes: The starting liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device are respectively set to a first water level value and a second water level value; the first water level value is greater than the second water level value; When the liquid level in the pure water tank drops to the first water level value, the first reverse osmosis device is started, so that the first reverse osmosis device produces pure water and delivers the pure water to the pure water tank. When the liquid level in the pure water tank rises to a preset high water level, the starting liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device are exchanged, so that the second reverse osmosis device will be started the next time the liquid level in the pure water tank drops.

2. The method according to claim 1, characterized in that, The first reverse osmosis device includes a filter, a high-pressure pump, and a reverse osmosis membrane assembly connected in sequence; the step of starting the first reverse osmosis device when the liquid level in the pure water tank drops to the first water level value, so that the first reverse osmosis device produces pure water and delivers the pure water to the pure water tank, includes: When the liquid level in the pure water tank drops to the first water level value, the first reverse osmosis device is started, so that the first reverse osmosis device filters out particulate matter in the raw water through the filter and delivers it to the high-pressure pump, and pressurizes the filtered raw water through the high-pressure pump and delivers it to the reverse osmosis membrane module, and performs reverse osmosis separation on the pressurized raw water through the reverse osmosis membrane module, and delivers the obtained pure water to the pure water tank.

3. The method according to claim 1, characterized in that, The method further includes: When the liquid level in the pure water tank rises to the preset high water level value, the reverse osmosis membrane module in the first reverse osmosis device is cleaned, and the cleaned wastewater is transported to the wastewater recycling device.

4. The method according to claim 1, characterized in that, The method further includes: If an abnormality is detected in the first reverse osmosis device during the process of producing pure water, the second reverse osmosis device will be started when the liquid level in the pure water tank drops to the second water level value, so that the second reverse osmosis device produces pure water and delivers the pure water to the pure water tank.

5. The method according to claim 1, characterized in that, The method further includes: If an abnormality is detected in the first reverse osmosis device during the process of producing pure water, an alarm will be triggered.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: When a water usage instruction is received, pure water is drawn from the pure water tank, and the sterilization device is controlled to sterilize the drawn pure water, and the sterilized pure water is delivered to the water-using equipment.

7. A control device for a water purification system, characterized in that, The water purification system includes a first reverse osmosis unit and a second reverse osmosis unit, and the device includes: The setting module is used to set the start-up liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device to a first water level value and a second water level value, respectively; the first water level value is greater than the second water level value. The water production module is used to start the first reverse osmosis device when the liquid level in the pure water tank drops to the first water level value, so that the first reverse osmosis device produces pure water and delivers the pure water to the pure water tank; when the liquid level in the pure water tank rises to the preset high water level value, the starting liquid level values ​​of the first reverse osmosis device and the second reverse osmosis device are exchanged, so that the second reverse osmosis device is started the next time the liquid level in the pure water tank drops.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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