Full-automatic liquid preparation device, liquid preparation method and computer readable storage medium

Abstract

The invention provides a full-automatic liquid preparation device, a liquid preparation method and a computer readable storage medium, and belongs to the technical field of chemical liquid preparation. The device comprises a main rack and an operation surface system integrated on the main rack, wherein a solution storage unit, a solution mixing unit, a conveying unit, a detection unit, a valve unit, a control unit and a pipeline system are integrated on the operation surface system; the solution storage unit comprises a standard barrel for storing a solution; the liquid mixing unit comprises a liquid mixing box, and a magnetic pump for stirring mixed liquid is arranged in the liquid mixing box; the conveying unit comprises a diaphragm pump for extracting the high-concentration stock solution, and the diaphragm pump is connected with the standard barrel and the liquid mixing box through a pipeline system; the detection unit comprises a pulse type liquid level sensor and a PH meter; the valve unit comprises a water inlet valve and a drain valve; the control unit is used for inputting liquid preparation parameters and controlling all the components to work cooperatively. The full-process liquid preparation is automatic, manual intervention is not needed, the safety risk of manual liquid preparation is avoided, and meanwhile the liquid preparation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of chemical solution preparation technology, and in particular to a fully automated solution preparation device, solution preparation method, and computer-readable storage medium. Background Technology

[0002] In the process of preparing and diluting chemical liquids, traditional operations often rely on manual pouring and mixing, which not only poses operational safety risks but also results in uneven mixing and low preparation accuracy. Manual preparation makes it difficult to precisely control the ratio of the stock solution to the diluent, and the preparation process has poor repeatability, leading to potential concentration deviations between different batches. Furthermore, manual operation cannot monitor key parameters such as liquid level and pH value in real time, resulting in unstable preparation quality and failing to meet the demands of high-precision production. In addition, traditional preparation methods cannot easily continue mixing operations if residual solution remains after preparation, resulting in poor flexibility.

[0003] Therefore, there is an urgent need for a safe, reliable, and efficient solution preparation method that ensures high accuracy, stability, and efficiency in solution preparation, in order to solve the problems of low safety, poor accuracy, and cumbersome operation associated with manual solution preparation. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a fully automatic liquid preparation device, liquid preparation method and computer-readable storage medium, which aims to solve the problems of poor safety, inability to ensure liquid preparation accuracy and low stability and efficiency of existing liquid preparation schemes.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A first aspect of the present invention provides a fully automated liquid preparation device, comprising: The main frame and the operating surface system integrated on the main frame, wherein the operating surface system integrates a solution storage unit, a mixing unit, a conveying unit, a detection unit, a valve unit and a control unit; The solution storage unit includes a high-concentration solution standard container for storing high-concentration stock solution and a low-concentration solution standard container for receiving prepared solution. The mixing unit includes a mixing tank, and the mixing tank is equipped with a magnetic pump for stirring the mixture. The delivery unit includes a diaphragm pump for extracting high-concentration stock solution, and the diaphragm pump is connected to a high-concentration solution standard tank and a mixing tank via a pipeline. The detection unit includes a pulse-type liquid level sensor and a pH meter. The pulse-type liquid level sensor is installed inside the mixing tank to monitor the liquid level height inside the mixing tank, and the pH meter is used to detect the pH value of the mixture inside the mixing tank. The valve unit includes an inlet valve and a drain valve. The inlet valve is connected to an external water source and a mixing tank via a pipe, and the drain valve is connected to the mixing tank and a low-concentration solution standard container via a pipe. The control unit includes a PLC controller and a touch screen. The touch screen is electrically connected to the PLC controller and is used to input liquid preparation parameters and display the equipment operating status. The PLC controller is electrically connected to the diaphragm pump, magnetic pump, pulse level sensor, pH meter, inlet valve, and outlet valve respectively, and controls the coordinated operation of each component.

[0006] In some embodiments, the system further includes a frame and a complete housing. The frame includes a chassis, component supports, and a door panel. The door panel isolates the entire machine from the outside environment. The frame is provided with an exhaust port. The operation surface system is integrated into a touch screen. The touch screen has modules for liquid preparation operation, liquid preparation parameter setting, operation monitoring, alarm query, I / O query, and operation prompts.

[0007] In some embodiments, the piping system includes a raw material delivery pipe connecting a high-concentration solution standard tank and a diaphragm pump, an inlet pipe connecting an inlet valve and a mixing tank, an outlet pipe connecting the mixing tank and a drain valve, and a wastewater pipe for discharging wastewater.

[0008] In some embodiments, the control unit further includes an interlock protection module, the interlock protection module comprising: When the liquid level in the mixing tank is lower than the preset lower limit, the magnetic pump is prohibited from starting and an alarm is triggered. When the liquid level in the mixing tank is higher than the preset maximum value, the inlet valve and diaphragm pump will stop working and an alarm will be triggered. When a diaphragm pump or magnetic pump is overloaded, an audible and visual alarm will be activated and the power supply to the corresponding pump will be cut off.

[0009] In some embodiments, the maximum capacity of the mixing tank is 290L, the detection accuracy of the pulse level sensor is not less than 0.01mm, and the detection response time of the pH meter does not exceed a preset pH meter detection time threshold.

[0010] This application also provides a fully automated solution preparation method, applied to any of the fully automated solution preparation devices described above, comprising the following steps: Step S1: Parameter setting; input and set the solution preparation parameters via the touch screen; the PLC controller calculates the required amount of high-concentration stock solution and dilution water based on the input and set solution preparation parameters; Step S2: Extraction of raw solution; The PLC controller controls the diaphragm pump to start, extracting the high-concentration raw solution from the high-concentration solution standard tank to the mixing tank. The pulse level sensor monitors the amount of raw solution extracted in real time. When the amount of raw solution used reaches the calculated value, the PLC controller controls the diaphragm pump to stop working. Step S3: Pure water injection; The PLC controller controls the water inlet valve to open, injecting pure water into the mixing tank. The pulse level sensor monitors the water injection volume in real time. When the water injection volume reaches the calculated value, the PLC controller controls the water inlet valve to close. Step S4: Mixing and stirring; The PLC controller controls the magnetic pump to start, which circulates and stirs the raw liquid and pure water in the mixing tank. After the stirring time reaches the set mixing time, the magnetic pump remains in standby mode. Step S5: pH detection and calibration; The pH meter detects the pH value of the mixture according to the set detection time. If the detected value is consistent with the target pH value, proceed to step S6. If the detected value is inconsistent with the target pH value, the PLC controller controls the inlet valve to add pure water or controls the diaphragm pump to add high-concentration stock solution according to the direction of the deviation. Then, it returns to step S4 to stir again until the pH value meets the set requirements. Step S6: Drainage and storage; The PLC controller controls the drain valve to open, and delivers the prepared mixture to the low-concentration solution standard tank. When the drainage volume reaches the set drainage volume per tank, a tank change prompt is triggered. After the tank change is completed, manual confirmation is required, and the system continues to drain until the total volume of the prepared solution is discharged.

[0011] In one embodiment, the setting of the solution preparation parameters includes configuring the target solution concentration, total solution volume, mixed solution circulation time, single tank discharge volume, and pH meter detection time; the PLC controller calculates the required amount of high-concentration stock solution and dilution water based on the target solution concentration and total solution volume.

[0012] In one embodiment, the liquid preparation parameters further include an analog quantity lower limit and an analog quantity conversion value. The PLC controller calculates the actual liquid volume based on the detection signal from the pulse-type liquid level sensor and the analog quantity conversion value.

[0013] In one embodiment, the method further includes: during the mixing process in step S4, the PLC controller displays the working status of the magnetic pump in real time through the operation monitoring module. If an overload alarm occurs, the mixing process is restarted by pressing the "automatic recovery" button on the operation panel system after troubleshooting.

[0014] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the fully automated liquid preparation method as described in any of the preceding claims.

[0015] By implementing the fully automatic liquid preparation device and method provided in this embodiment of the invention, the entire process of "raw solution extraction - pure water injection - circulation stirring - pH detection - liquid discharge and storage" is automatically completed through the coordinated control of diaphragm pump, magnetic pump, inlet valve and drain valve, which greatly reduces the intensity of manual operation; the entire liquid preparation process is automated, without the need for manual intervention, avoiding the safety risks of manual liquid preparation, and improving the efficiency of liquid preparation. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of a fully automated liquid preparation device according to the present invention; Figure 2 This is a perspective view of a fully automated liquid preparation device according to the present invention; Figure 3 This is a front view of a fully automated liquid preparation device according to the present invention; Figure 4 This is a schematic diagram of one side of a fully automatic liquid dispensing device with the outer cover of the frame removed, according to the present invention. Figure 5 This is a schematic diagram of the other side of a fully automatic liquid dispensing device with the outer cover of the frame removed, as per the present invention. Figure 6 This is a flowchart of a first embodiment of a fully automated solution preparation method according to the present invention; Figure 7 This is a flowchart of a second embodiment of a fully automated liquid preparation method according to the present invention. Detailed Implementation

[0017] To make the technical problems, solutions, and beneficial effects of this invention clearer and more understandable, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0019] Example 1:

[0020] This application invention provides a fully automatic liquid preparation device; please refer to [link / reference]. Figure 1The fully automatic liquid preparation device includes: a main frame 10, and an operating surface system 20 integrated into the main frame 10. The operating surface system 20 integrates a solution storage unit 30, a mixing unit 40, a conveying unit 50, a detection unit 60, a valve unit 70, a control unit 80, and a piping system 90. The solution storage unit 30, the mixing unit 40, the conveying unit 50, and the valve unit 70 are connected through the piping system 90.

[0021] The solution storage unit 20 includes a high-concentration solution standard container 21 and a low-concentration solution standard container 22, which are used to store high-concentration stock solution and receive prepared solution, respectively.

[0022] In one embodiment of this application, the high-concentration solution standard container 21 in the solution storage unit 30 also integrates a stock solution quality analysis module, which includes an electrochemical impedance spectroscopy sensor and a microcontroller. This module is used to perform non-invasive real-time component and concentration analysis of the high-concentration stock solution before or during extraction by the diaphragm pump 51. The microcontroller of the stock solution quality analysis module is communicatively connected to the PLC controller 14. When the analysis result exceeds a preset stock solution quality threshold range, the PLC controller 14 triggers an alarm and suspends the solution preparation process, or dynamically adjusts the required stock solution dosage and dilution strategy based on the analysis result. The above embodiment, by introducing electrochemical impedance spectroscopy technology, enables real-time monitoring of key parameters of the stock solution (e.g., effective component concentration, impurity content) without sampling, achieving a leap from passive storage to active quality control. Therefore, Figure 1 The example fully automated liquid preparation device can automatically adjust the formula or trigger an alarm based on the quality of the incoming materials, ensuring high quality and consistency at the source of liquid preparation, thereby improving the reliability and intelligence of the system and solving the risk of unqualified final products caused by batch differences in raw materials.

[0023] The mixing unit 40 includes a mixing tank 41. In this embodiment, the mixing tank 41 has a maximum capacity of 290L and is equipped with a magnetic pump 42 inside, which is used to circulate and stir the original liquid and pure water to ensure uniform mixing.

[0024] The conveying unit 50 is a diaphragm pump 51, which connects the high-concentration solution standard container 21 and the mixing tank 41 through a PP material raw liquid conveying pipe to realize the extraction and conveying of the raw liquid.

[0025] The detection unit 60 includes a pulse level sensor 61 and a pH meter 62. The pulse level sensor 61 is installed inside the mixing tank 41. In this embodiment, the detection accuracy of the pulse level sensor 61 is 0.01 mm, which is used to monitor the liquid level height in the tank in real time and then convert it into liquid volume. The detection response time of the pH meter 62 does not exceed a set threshold, which is used to accurately detect the pH value of the mixture.

[0026] The valve unit 70 includes an inlet valve 71 and a drain valve 72. The inlet valve 71 is connected to an external water source and a mixing tank 41 via a PP inlet pipe to control the injection of pure water. The drain valve 72 is connected to the mixing tank 41 and a low-concentration solution standard tank 22 via a PP outlet pipe to control the discharge of the prepared solution.

[0027] The control unit 80 includes a PLC controller 14 and an operation control component. The operation control component can be a physical button or a touch screen. In this embodiment, the operation surface component is a touch screen. The touch screen is electrically connected to the PLC controller 14 and has functional modules for liquid preparation operation, liquid preparation parameter setting, operation monitoring, alarm query, I / O query, and operation prompts. To ensure the controllability of the operation, the operator needs to enter a preset password (such as 2907) when entering the liquid preparation parameter setting module. The PLC controller 14 is electrically connected to the diaphragm pump 51, magnetic pump 42, pulse level sensor 61, pH meter 62, inlet valve 71, and drain valve 72 respectively, controlling the coordinated operation of each component.

[0028] The pipeline system 90 includes the inlet pipe, the outlet pipe, and the wastewater pipe (made of PP material) for discharging wastewater.

[0029] The fully automatic liquid dispensing device described in this application further includes a frame cover 13, which consists of a chassis 131, a component support 132, and a door panel 133. The door panel 133 isolates the entire machine from the outside environment. The frame cover 13 is equipped with an exhaust port to improve the operating environment. The main frame 10 is equipped with an emergency stop button 12, which is electrically connected to the PLC controller 14. Pressing the emergency stop button 12 can stop the equipment operation immediately. To release the emergency stop, the emergency stop button 12 needs to be turned clockwise to unlock and the power supply restarted.

[0030] This application isolates the equipment from the outside world through the frame cover 13 and the door panel 133 to prevent liquid splashing and impurities from entering, thereby improving the operating environment; the equipment must not be near open flames or exposed to direct sunlight, and must not be moved when the tank is full of liquid, thus avoiding safety risks from the perspective of usage scenarios.

[0031] The control unit 80 is also equipped with an interlock protection module (not shown in the figure). When the liquid level in the mixing tank 41 is lower than the preset lower limit, the magnetic pump 42 is prohibited from starting and an alarm is triggered. When the liquid level in the mixing tank 41 is higher than the preset maximum value (the liquid level height corresponding to 290L), the inlet valve 71 and the diaphragm pump 51 are stopped and an alarm is triggered. When the diaphragm pump 51 or the magnetic pump 42 is overloaded, an audible and visual alarm is activated and the power supply to the corresponding pump is cut off. This application avoids dangerous situations such as dry running and overflow of the equipment through multiple interlock logic. The emergency stop button design can quickly cut off the operation of the equipment in an emergency. After unlocking, it needs to be manually restarted to further ensure operational safety.

[0032] This application integrates alarm query and I / O query functions through a touch screen, allowing real-time viewing of equipment operating status and historical alarm information, facilitating rapid location of fault causes. The operating interface system 20 clearly identifies the models of vulnerable parts, and the regular maintenance schedule clearly specifies the cycles and methods for tank cleaning, pipeline cleaning, and control cabinet maintenance, reducing sudden failures, extending equipment lifespan, and ensuring long-term stable operation of the equipment.

[0033] In this embodiment, the touchscreen employs a tiered access control design. Setting liquid preparation parameters requires a preset password to prevent unauthorized personnel from misoperating. The main screen integrates modules for liquid preparation operation, operation monitoring, and alarm deactivation, with clear and concise operation prompts (e.g., manual mode involves jogging, and manual confirmation is required after changing containers), reducing the learning curve for operators. The touchscreen displays the current liquid level, liquid volume, and valve operating status in real time. Three-color indicator lights provide intuitive feedback on the equipment's operating status (green for normal, yellow for warning, and red for fault). Historical alarm records are traceable, facilitating equipment troubleshooting and maintenance management, and improving the ease of use and controllability of the equipment.

[0034] This application embodiment uses a pulse-type liquid level sensor (with a detection accuracy of not less than 0.01mm) to monitor the liquid level of the stock solution, pure water, and mixed solution in the mixing tank in real time. Combined with the analog quantity conversion function of the PLC controller, it realizes accurate calculation of liquid volume. With the addition of a pH meter to detect the acidity and alkalinity of the mixed solution in real time, a closed-loop control of "metering-stirring-detection-calibration" is formed. When the pH value deviates from the set value, the system automatically adds stock solution or pure water until the target concentration is reached, which solves the problems of large deviation in proportion and poor batch consistency in traditional manual liquid preparation.

[0035] Using the fully automated solution preparation device described in this application, the solution preparation process eliminates the need for manual pouring and mixing. Through the coordinated control of a diaphragm pump, magnetic pump, inlet valve, and outlet valve, the entire process of "stock solution extraction - pure water injection - circulation stirring - pH detection - discharge and storage" is automatically completed, significantly reducing the intensity of manual operation. It supports continuous mixing, allowing for the resetting of parameters for secondary solution preparation in the mixing tank, avoiding solution waste and improving operational flexibility. The device allows for flexible setting of different concentration formulas, total solution volume, and discharge capacity per tank via a touchscreen, adapting to different solution preparation needs. The pH meter detection time is customizable, allowing adjustment of the detection frequency for solutions with different characteristics to ensure solution preparation quality. The inclusion of a wastewater discharge pipeline facilitates equipment cleaning and wastewater treatment after solution preparation, further expanding the device's application scenarios.

[0036] The fully automatic liquid preparation device of this application achieves full automation of the entire process of raw liquid extraction, pure water injection, mixing and stirring, pH detection, and liquid discharge and storage through the coordinated control of the control unit 80, detection unit 60, conveying unit 50 and valve unit 70. No manual intervention is required, avoiding the safety risks of manual liquid preparation, and improving the efficiency of liquid preparation.

[0037] In another embodiment of this application, the control unit 80 further includes a digital twin optimization module, which constructs a virtual image that runs synchronously with the physical device on the cloud or local server based on the physical model of the device and real-time operating data. It should be noted that the digital twin optimization module has a built-in machine learning algorithm to analyze historical liquid preparation data, the current and vibration signals of the magnetic pump 42, and the fluid simulation data in the mixing tank 41, so as to dynamically optimize and output the optimal stirring power curve and cycle time of the magnetic pump for the current liquid preparation parameters, and send them to the PLC controller (14) for execution. Since the above embodiment deeply integrates digital twin and machine learning into the fully automatic liquid preparation device, it not only monitors the operating status, but also performs simulation, prediction and optimization through virtual models. Machine learning algorithms can learn the complex nonlinear relationship between material characteristics, ambient temperature and optimal mixing effect from massive data, thereby providing a customized, non-fixed program stirring scheme for each liquid preparation, significantly improving mixing efficiency and uniformity, reducing energy consumption, and enabling predictive maintenance, which is a key feature for the device to move from automation to intelligence.

[0038] Example 2:

[0039] This application further provides a fully automated solution preparation method, applied to the fully automated solution preparation device described in Embodiment 1, the fully automated solution preparation method comprising the following steps: Step S1: Parameter setting; input and set the solution preparation parameters via the touch screen; the PLC controller calculates the required amount of high-concentration stock solution and dilution water based on the input and set solution preparation parameters; Specifically, in one embodiment, the setting of the solution preparation parameters includes configuring the target solution concentration, total solution volume, mixed solution circulation time, single-tank discharge volume, and pH meter detection time; the PLC controller calculates the required amount of high-concentration stock solution and dilution water based on the target solution concentration and total solution volume.

[0040] In another embodiment, the liquid preparation parameters further include an analog quantity lower limit and an analog quantity conversion value. The PLC controller calculates the actual liquid volume based on the detection signal from the pulse level sensor and the analog quantity conversion value.

[0041] To add a data-driven intelligent decision-making support step before traditional manual parameter input, a formula intelligent recommendation scheme is included before parameter setting in step S1. Specifically, this includes: the PLC controller 14 or its connected host computer system accessing a stored historical solution database; based on the user-input target solution concentration and total solution volume, using a pre-trained machine learning model to analyze environmental temperature and humidity, batch characteristics of the stock solution, and final pH stability data from historical successful solution preparation records; recommending one or more optimized combinations of initial mixture circulation time and pH meter detection time parameters to the user; and predicting the expected mixing efficiency and quality stability scores for each combination. This scheme no longer relies on operator experience to set fixed parameters, but instead uses a machine learning model to uncover hidden patterns in historical data, recommending "verified" efficient and stable parameter combinations for the current task. This lowers the operational threshold, increases the first-piece success rate, and allows the solution preparation process parameters to continuously self-optimize with data accumulation, demonstrating the method's adaptive and learning evolution capabilities.

[0042] Step S2: Extraction of raw solution; The PLC controller controls the diaphragm pump to start, extracting the high-concentration raw solution from the high-concentration solution standard tank to the mixing tank. The pulse level sensor monitors the amount of raw solution extracted in real time. When the amount of raw solution used reaches the calculated value, the PLC controller controls the diaphragm pump to stop working. Step S3: Pure water injection; The PLC controller controls the water inlet valve to open, injecting pure water into the mixing tank. The pulse level sensor monitors the water injection volume in real time. When the water injection volume reaches the calculated value, the PLC controller controls the water inlet valve to close. Step S4: Mixing and stirring; The PLC controller controls the magnetic pump to start, which circulates and stirs the raw liquid and pure water in the mixing tank. After the stirring time reaches the set mixing time, the magnetic pump remains in standby mode. During the mixing process, the touch screen displays the working status of the magnetic pump 42 in real time. If an overload alarm occurs, the mixing process must be restarted by pressing the "Auto Recover" button on the touch screen after troubleshooting.

[0043] Step S5: pH detection and calibration; The pH meter detects the pH value of the mixture according to the set detection time. If the detected pH value is consistent with the target pH value, proceed to step S6. If the detected value is inconsistent with the target pH value, the PLC controller controls the inlet valve to add pure water or controls the diaphragm pump to add high-concentration stock solution according to the direction of the deviation. Then, it returns to step S4 to stir again until the pH value meets the set requirements. Specifically, if the detected pH value is too high (excessive stock solution), the PLC controller 14 controls the water inlet valve 71 to add an appropriate amount of pure water. If the detected pH value is too low (excessive pure water), the diaphragm pump 51 controls the addition of an appropriate amount of high-concentration stock solution. Then, the process returns to step S4 to stir again until the pH value meets the set requirements.

[0044] In another embodiment of this application, the pH detection and calibration process in step S5 can employ a reinforcement learning optimization strategy. Specifically, the system models the pH calibration process as a Markov decision process, using the deviation between the current pH detection value and the target value, the cumulative amount of liquid already added, and the remaining calibration time as the state, and the micro-flow pulse action of adding pure water or concentrate as the action, with the reward function being to achieve rapid convergence to the target pH value and minimize the total amount added. The PLC controller 14 has a built-in or access to a reinforcement learning agent trained offline. Each time there is a pH calibration deviation, the reinforcement learning agent decides the optimal sequence of addition actions based on the current state, thereby dynamically replacing the preset fixed addition logic. Unlike traditional "trial and error" addition based on fixed rules (e.g., deviation direction), the reinforcement learning agent introduced in the above embodiment can learn the optimal control strategy in complex, nonlinear chemical systems, achieving faster and more accurate pH convergence, while minimizing the excessive use of concentrate or pure water, thus improving economy while ensuring quality.

[0045] Step S6: Drainage and storage; The PLC controller controls the drain valve to open, and delivers the prepared mixture to the low-concentration solution standard tank. When the drainage volume reaches the set drainage volume per tank, a tank change prompt is triggered. After the tank change is completed, manual confirmation is required, and the system continues to drain until the total volume of the prepared solution is discharged.

[0046] In this embodiment, the PLC controller 14 controls the opening of the drain valve 72 to deliver the prepared mixture to the low-concentration solution standard tank. The touch screen displays the current liquid level and drain volume in real time. When the drain volume reaches the set drain volume per tank (e.g., 50L), the tank replacement indicator light flashes. After the tank replacement is completed, the system continues to drain by manually pressing the confirmation button (e.g., setting it to be valid for 0.2 seconds). The total amount of prepared solution (200L) is then drained.

[0047] In one embodiment, it further includes: Step S7: Continue mixing; If there is any undischarged mixture remaining in the mixing tank, the mixing parameters can be reset through the operating panel system, and steps S1-S6 can be repeated to achieve continuous mixing operation.

[0048] Using the fully automated solution preparation method described in this application, the solution preparation process eliminates the need for manual pouring and mixing. Through the coordinated control of a diaphragm pump, magnetic pump, inlet valve, and outlet valve, the entire process of "stock solution extraction - pure water injection - circulation stirring - pH detection - discharge and storage" is automatically completed, significantly reducing the intensity of manual operation. It supports continuous mixing, allowing for the direct reset of parameters for secondary solution preparation in the mixing tank, avoiding solution waste and improving operational flexibility. This application allows for flexible setting of different concentration formulas, total solution volume, and discharge capacity per tank via a touchscreen, adapting to different solution preparation needs. The pH meter detection time is customizable, allowing adjustment of the detection frequency for solutions with different characteristics to ensure solution preparation quality. The inclusion of a wastewater discharge pipeline facilitates equipment cleaning and wastewater treatment after solution preparation, further expanding the equipment's application scenarios.

[0049] The fully automated solution preparation method described in this application embodiment is fully automated throughout the solution preparation process, requiring no manual intervention, thus avoiding the safety risks of manual solution preparation and improving solution preparation efficiency.

[0050] Example 3:

[0051] One embodiment of the present invention also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it implements the steps in the fully automated liquid preparation method described in Embodiment 2 above. The specific steps are as described in Embodiment 2 and will not be repeated here.

[0052] The memory in this embodiment can be used to store software programs and various data. The memory may primarily include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function, etc.; the data storage area may store data created based on the use of the mobile phone, etc. Furthermore, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0053] According to one example of this embodiment, all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium. For example, in this embodiment, the program can be stored in the storage medium of a computer system and executed by at least one processor in the computer system to implement the processes of the embodiments of the methods described above. The storage medium includes, but is not limited to, magnetic disks, USB flash drives, optical disks, read-only memory (ROM), etc.

[0054] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0055] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0056] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0057] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A fully automatic liquid preparation device, characterized in that, include: The main frame and the operating surface system integrated on the main frame, wherein the operating surface system integrates a solution storage unit, a mixing unit, a conveying unit, a detection unit, a valve unit, a control unit, and a piping system; The solution storage unit includes a high-concentration solution standard container for storing high-concentration stock solution and a low-concentration solution standard container for receiving prepared solution. The mixing unit includes a mixing tank, and the mixing tank is equipped with a magnetic pump for stirring the mixture. The delivery unit includes a diaphragm pump for extracting high-concentration stock solution, and the diaphragm pump is connected to a high-concentration solution standard tank and a mixing tank through a pipeline system. The detection unit includes a pulse-type liquid level sensor and a pH meter. The pulse-type liquid level sensor is installed inside the mixing tank to monitor the liquid level height inside the mixing tank, and the pH meter is used to detect the pH value of the mixture inside the mixing tank. The valve unit includes an inlet valve and a drain valve. The inlet valve is connected to an external water source and a mixing tank via a pipe, and the drain valve is connected to the mixing tank and a low-concentration solution standard container via a pipe. The control unit includes a PLC controller and a touch screen. The touch screen is electrically connected to the PLC controller and is used to input liquid preparation parameters and display the equipment operating status. The PLC controller is electrically connected to the diaphragm pump, magnetic pump, pulse level sensor, pH meter, inlet valve, and outlet valve respectively, and controls the coordinated operation of each component.

2. The fully automatic liquid preparation device according to claim 1, characterized in that, It also includes a frame and a complete machine cover. The frame includes a chassis, component supports and a door panel. The door panel isolates the entire machine from the outside world. The frame is equipped with an exhaust port. The operation surface system is integrated into a touch screen. The touch screen has modules for liquid preparation operation, liquid preparation parameter setting, operation monitoring, alarm query, I / O query and operation prompts.

3. The fully automatic liquid preparation device according to claim 1, characterized in that, The piping system includes a raw material delivery pipe connecting a high-concentration solution standard container and a diaphragm pump, an inlet pipe connecting an inlet valve and a mixing tank, an outlet pipe connecting the mixing tank and a drain valve, and a wastewater pipe for discharging wastewater.

4. The fully automatic liquid preparation device according to claim 3, characterized in that, The control unit is further provided with an interlock protection module, which includes: When the liquid level in the mixing tank is lower than the preset lower limit, the magnetic pump is prohibited from starting and an alarm is triggered. When the liquid level in the mixing tank is higher than the preset maximum value, the inlet valve and diaphragm pump will stop working and an alarm will be triggered. When a diaphragm pump or magnetic pump is overloaded, an audible and visual alarm will be activated and the power supply to the corresponding pump will be cut off.

5. The fully automatic liquid preparation device according to claim 1, characterized in that, The maximum capacity of the mixing tank is 290L, the detection accuracy of the pulse level sensor is not less than 0.01mm, and the detection response time of the pH meter does not exceed the preset pH meter detection time threshold.

6. A fully automated solution preparation method, applied to the fully automated solution preparation device as described in any one of claims 1-6, characterized in that, Includes the following steps: Step S1: Parameter setting; input and set the solution preparation parameters via the touch screen; the PLC controller calculates the required amount of high-concentration stock solution and dilution water based on the input and set solution preparation parameters; Step S2: Extraction of the original solution; The PLC controller starts the diaphragm pump to extract the high-concentration stock solution from the high-concentration solution standard tank to the mixing tank. The pulse level sensor monitors the amount of stock solution extracted in real time. When the amount of stock solution used reaches the calculated value, the PLC controller controls the diaphragm pump to stop working. Step S3: Pure water injection; The PLC controller controls the water inlet valve to open, injecting pure water into the mixing tank. The pulse level sensor monitors the water injection volume in real time. When the water injection volume reaches the calculated value, the PLC controller controls the water inlet valve to close. Step S4: Mix and stir; The PLC controller starts the magnetic pump to circulate and stir the stock solution and pure water in the mixing tank. After the stirring time reaches the set mixing time, the magnetic pump stays in standby mode. Step S5: pH detection and calibration; The pH meter measures the pH value of the mixture according to the set detection time. If the detected value is consistent with the target pH value, proceed to step S6. If the detected value is inconsistent with the target pH value, the PLC controller controls the inlet valve to add pure water or controls the diaphragm pump to add high-concentration stock solution according to the direction of the deviation. Then, it returns to step S4 to stir again until the pH value meets the set requirements. Step S6: Drainage and storage; The PLC controller controls the drain valve to open, and delivers the prepared mixture to the low-concentration solution standard tank. When the drainage volume reaches the set drainage volume per tank, a tank change prompt is triggered. After the tank change is completed, manual confirmation is required, and the system continues to drain until the total volume of the prepared solution is discharged.

7. The fully automated dispensing method according to claim 6, characterized in that, The parameters for setting the solution preparation include setting the target solution concentration, total solution volume, mixed solution circulation time, single tank discharge volume, and pH meter detection time; the PLC controller calculates the required amount of high-concentration stock solution and dilution water based on the target solution concentration and total solution volume.

8. The fully automated solution preparation method according to claim 6, characterized in that, The liquid preparation parameters also include analog quantity lower limit and analog quantity conversion value. The PLC controller calculates the actual liquid volume based on the detection signal of the pulse liquid level sensor and the analog quantity conversion value.

9. The fully automated solution preparation method according to claim 6, characterized in that, In step S4, during the mixing process, the PLC controller displays the working status of the magnetic pump in real time through the operation monitoring module. If an overload alarm occurs, the mixing process must be restarted by pressing the "automatic recovery" button on the operation panel after troubleshooting.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the fully automated liquid preparation method as described in any one of claims 6 to 9.

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