Sulfate content detection device

Abstract

The utility model provides a sulfate content detection device which comprises a cabinet body, a liquid storage tank is arranged at one end of the top of the cabinet body, a stirring tank and a control panel are arranged at the other end of the top of the cabinet body, a pipe frame is vertically arranged on the cabinet body between the liquid storage tank and the stirring tank, the liquid storage tank is a flat circular ring embedded into the cabinet body, and a liquid storage cup is placed in the liquid storage tank. The stirring tank is a disc tank processed on the cabinet body, a reaction cup is placed in the stirring tank, and a magnetic stirrer is arranged below the stirring tank. By means of automatic titration of the peristaltic pump, the number of operators is greatly reduced, and the operators can easily achieve the functions of rapid processing of experimental data, storage of historical data, effective management of files and the like through the interface. Meanwhile, the interface also has the capability of actively eliminating data filtering, accurate and rapid data management is realized in a simple, convenient and rapid operation mode, data can be rapidly backtracked when a fault occurs, the root of the problem can be accurately positioned, and powerful support is provided for smooth proceeding of an experiment and subsequent optimization and improvement.

Description

Technical Field

[0001] This utility model relates to a sulfate content detection device. Background Technology

[0002] Existing wet-process phosphoric acid production all uses the sulfuric acid process. During the production process, several methods are employed to detect the sulfate content, including inductively coupled plasma atomic emission spectrometry (ICP-OES), thermal titration, and visual colorimetric analysis using barium roseate.

[0003] While ICP-OES offers high accuracy and reliability, it also has drawbacks such as high equipment costs, limitations on the range of sample concentrations that can be analyzed, and the requirement for a fixed location. This necessitates manual sample transport for frequent sulfate determinations, significantly increasing labor and time costs. As for the barium roseate visual colorimetric method, although relatively simple to operate, it relies solely on the operator's visual experience, allowing for only semi-quantitative analysis and failing to meet the demands for precise measurement.

[0004] Therefore, existing detection methods each have their own shortcomings, not only causing a significant waste of human and material resources, but also leading to large fluctuations in measurement results, making it impossible to ensure the rigor and scientific nature of quality control, and failing to meet the needs of enterprises for efficient and precise production. For example, CN117647618A describes an analytical device for rapidly measuring the equivalent concentration of carbon dioxide and its usage method. This device uses a self-control unit to provide feedback via pressure difference signals inside and outside the system. The controller drives a motor to move a slider to automatically adjust the liquid level and height of the collection bottle, achieving automatic control and measurement during the detection process. However, it does not provide a direct display of the titration process, making the detection of the reaction process unintuitive. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a sulfate content detection device.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a sulfate content detection device, including a cabinet; one end of the top of the cabinet is provided with a liquid storage tank, and the other end is provided with a stirring tank and a control panel. A pipe rack is erected on the cabinet between the liquid storage tank and the stirring tank. The liquid storage tank is a flat circular ring embedded in the cabinet, and a liquid storage cup is placed in the liquid storage tank. The stirring tank is a circular groove machined on the cabinet, and a reaction cup is placed in the stirring tank. A magnetic stirrer is provided below the stirring tank. The cabinet also includes a power supply, a peristaltic pump, a data transmission connector, and a power connector. The power supply is connected to an external power source through the power connector. The microcontroller is connected to the data transmission connector and the control panel respectively. The peristaltic pump extends out of the cabinet through a conduit and is connected to the reaction cup and the liquid storage cup respectively.

[0008] The cabinet is divided into two spaces by a supporting partition in the middle. The microcontroller and magnetic stirrer are installed in one space, and the power supply, peristaltic pump, data transmission connector, and power connector are installed in the other space. The data transmission connector and power connector are fixed to the side wall of the cabinet, and the power supply is fixed to the supporting partition by a power supply bracket.

[0009] The magnetic stirrer includes a magnet, with two cylindrical magnets fixed at both ends of a support plate. The middle of the support plate is mounted on the shaft of a motor. The motor is hung upside down in the center of a motor bracket, and both ends of the motor bracket are fixed to the bottom of the cabinet by the support plate.

[0010] The liquid storage tank and the stirring tank are respectively located on the liquid storage platform and the stirring platform. The height of the liquid storage platform is higher than that of the stirring platform, and the control panel forms an obtuse angle with the stirring platform.

[0011] A high-precision temperature sensor is installed on the tube rack, and the detection end of the high-precision temperature sensor extends into the reaction vessel.

[0012] The beneficial effects of this invention are as follows: Automatic titration via a peristaltic pump significantly reduces the number of operators required. Operators can easily perform functions such as rapid processing of experimental data, storage of historical data, and effective file management through this interface. Simultaneously, the interface also possesses the ability to actively eliminate data filtering. With its simple and quick operation, it achieves accurate and rapid data management. In the event of a malfunction, it can quickly trace back data and accurately pinpoint the root cause of the problem, providing strong support for the smooth progress of experiments and subsequent optimization and improvement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the support structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 4 This is a top view of the internal structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the internal device structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the reaction principle of this utility model;

[0019] Figure 7 A schematic diagram of the operation interface before the experiment of the microcontroller system.

[0020] Figure 8 This is a schematic diagram of the operation interface during the experiment of this microcontroller system.

[0021] In the diagram: 1-Cabinet, 11-Liquid storage platform, 12-Stirring platform, 13-Supporting partition, 14-Base plate, 2-Liquid storage tank, 21-Liquid storage cup, 3-Stirring tank, 31-Magnet, 32-Supporting plate, 33-Motor, 34-Motor bracket, 35-Reaction cup rack, 36-Reaction cup, 4-Pipe rack, 41-Temperature sensor, 5-Control panel, 51-Display, 52-Host computer, 6-Power supply, 61-Power supply bracket, 7-Peristaltic pump, 8-Data transmission connector, 9-Power connector, 10-Microcontroller. Detailed Implementation

[0022] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0023] This invention organically integrates the reaction device, detection function, control module, and host computer program into one unit. The host computer plays a crucial role in the entire detection process. It not only controls the entire experimental process in real time and precisely adjusts various parameters to ensure the experiment runs stably according to the preset program, but also has a powerful data recording function, capable of real-time and accurate acquisition and storage of various data generated during the experiment. Simultaneously, the host computer can quickly and efficiently process and analyze the acquired data. By real-time acquisition of the exothermic situation generated by the chemical reaction during the experiment, and utilizing advanced algorithms and models, it achieves real-time and accurate monitoring of sulfur trioxide concentration. The monitoring error can be controlled within an extremely small range, only ±0.002 g / ml. This accuracy is significantly improved compared to traditional detection methods, providing more accurate and reliable data support for the production process of wet-process phosphoric acid. This powerfully promotes technological progress and quality improvement in the wet-process phosphoric acid production industry, and has broad market application prospects and significant practical value.

[0024] A sulfate content detection device includes a cabinet 1; one end of the top of the cabinet 1 is provided with a storage tank 2, and the other end is provided with a stirring tank 3 and a control panel 5. A pipe rack 4 is erected on the cabinet 1 between the storage tank 2 and the stirring tank 3. The storage tank 2 is a flat circular ring embedded in the cabinet 1, and a storage cup 21 is placed in the storage tank 2. The stirring tank 3 is a disc groove machined on the cabinet 1, and a reaction cup 36 is placed in the stirring tank 3. A magnetic stirrer is provided below the stirring tank 3. The cabinet 1 is also provided with a power supply 6, a peristaltic pump 7, a data transmission connector 8, and a power connector 9. The power supply 6 is connected to an external power source through the power connector 9. The microcontroller 10 is connected to the data transmission connector 8 and the control panel 5 respectively. The peristaltic pump 7 extends out of the cabinet 1 through a conduit and is connected to the reaction cup 36 and the storage cup 21 respectively.

[0025] The cabinet 1 is provided with a support partition 13 in the middle to divide the cabinet 1 into two spaces. The microcontroller 10 and the magnetic stirrer are installed in one space, and the power supply 6, peristaltic pump 7, data transmission connector 8 and power connector 9 are installed in the other space. The data transmission connector 8 and power connector 9 are fixed on the side wall of the cabinet 1, and the power supply 6 is fixed on the support partition 13 by the power bracket 61.

[0026] The magnetic stirrer includes magnets 31, two cylindrical magnets 31 are fixed at both ends of a support plate 32, the middle of the support plate 32 is mounted on the shaft of a motor 33, the motor 33 is hung upside down in the center of a motor bracket 34, and the two ends of the motor bracket 34 are fixed to the bottom of the cabinet 1 by a support plate.

[0027] The liquid storage tank 2 and the stirring tank 3 are respectively installed on the liquid storage platform 11 and the stirring platform 12. The height of the liquid storage platform 11 is higher than that of the stirring platform 12. The control panel 5 forms an obtuse angle with the stirring platform 12.

[0028] A high-precision temperature sensor is installed on the tube rack 4, and the detection end of the high-precision temperature sensor extends into the reaction cup 36.

[0029] Example: Figure 6 As shown, in actual operation, it is first necessary to remove the SO4-containing... 2 - 3 ml of the phosphate extract and 17 ml of deionized solution were poured into an insulated reaction vessel. At this point, the host computer started running a LabVIEW program, which automatically sent a series of control commands to the STM32F103 microcontroller chip. Upon receiving the commands, the chip immediately activated the magnetic stirrer motor, causing it to continuously and stably stir the solution in the reaction vessel. Simultaneously, the instrument screen displayed the current operating status, including the stirrer speed and solution temperature, and also showed the temperature change over time as a clear curve, allowing the operator to easily monitor the experiment's progress.

[0030] Once preparations are complete, the LabVIEW program on the host computer will send the "Start Experiment" command again. Upon receiving this command, the stepper motor peristaltic pump will precisely deliver the barium chloride solution, prepared beforehand in the solution storage bottle, into the insulated reaction vessel, initiating the formal chemical reaction process. Throughout the reaction, the LabVIEW program on the host computer will collect data transmitted from the temperature sensor in real time and display this data on the graphical interface, forming an intuitive temperature change curve. By deeply analyzing and processing the collected temperature data, the host computer uses advanced algorithms to monitor the temperature difference changes caused by the chemical reaction, and then accurately determines the sulfate concentration in the test solution based on these temperature difference data, achieving efficient and accurate detection of sulfate content in wet-process phosphoric acid.

[0031] Before conducting the experiment, first open the LabVIEW software on the host computer. Then, locate and click the run arrow in the upper left corner. The software will automatically begin the process of recognizing the instrument's serial port. When the corresponding indicator light on the instrument turns green, it means that a communication connection has been successfully established between the host computer and the instrument, laying the foundation for subsequent experimental operations.

[0032] Next, as Figure 7 As shown, locate and click the "Speed ​​Adjustment" option in the software interface. By dragging this arrow, you can precisely set the speed of the magnetic stirrer according to the experimental requirements, ensuring that the reaction solution is fully mixed at a suitable stirring speed, thus guaranteeing the stability and accuracy of the experiment. After setting the speed, click the "Start Acquisition" button. At this point, the graph on the left side of the software interface will display the real-time temperature data change curve collected by the temperature sensor. However, during the initial stirring process, because the solution is not completely mixed, the temperature curve may be unstable and exhibit significant fluctuations, which may interfere with subsequent experimental data reading and analysis. In such cases, click the "Clear Image" button to clear the previously plotted image curve, allowing you to obtain a clearer and more stable temperature curve, thus providing a reliable basis for accurate analysis of the experimental data.

[0033] Once the temperature curve gradually stabilizes, click the "Start Experiment" button. When this button is triggered, the stepper motor peristaltic pump will immediately start, precisely pumping the pre-prepared barium chloride solution into the reaction vessel. During the reaction, the temperature curve gradually rises with the addition of barium chloride solution. When the temperature curve stabilizes again, this indicates that the chemical reaction is complete. At this point, place the green and blue vernier curves at the start and end points of the experiment, respectively. The host computer will select the data for calculation based on these two vernier curves. Finally, click the "Calculate Results" button. The software will automatically and quickly calculate the sulfate content in the analyte based on the collected temperature data and the pre-set calculation model, thus completing the entire experimental detection process and providing accurate and reliable experimental data results for the experimenter.

[0034] Enter the corresponding data for the standard solution concentration and coordinate temperature difference, and click the "Save Coordinate Temperature Difference" button. The host computer program will automatically save the corresponding data to Excel. After the program runs, the fitted linear equation and correlation coefficient of the data will be displayed in the results section. If there is an error in the entered data, you can click the "Delete Coordinate Data" button to delete the previous data and reset the coordinates.

[0035] In the dedicated data input fields, accurately fill in the corresponding data information for the "Solution Concentration" and "Coordinate Temperature Difference" fields. After completing the data input, click the "Save Coordinate Temperature Difference" button. The host computer program will then automatically start the data storage process, saving the entered data completely to an Excel spreadsheet. In the "Fitting Panel" area, you can obtain the linear equation fitted to the data after program calculation and processing, along with related coefficients and other corresponding data results. If you find errors in the previously entered data during the data input process, simply click the "Delete Coordinate Data" button to delete all previously entered incorrect data. Then, accurately re-enter the correct data in the corresponding positions and repeat the data saving and program running operations.

Claims

1. A sulfate content detection device, comprising a cabinet (1), characterized in that: The cabinet (1) has a liquid storage tank (2) at one end of its top and a stirring tank (3) and a control panel (5) at the other end. A pipe rack (4) is erected on the cabinet (1) between the liquid storage tank (2) and the stirring tank (3). The liquid storage tank (2) is a flat ring embedded in the cabinet (1). A liquid storage cup (21) is placed in the liquid storage tank (2). The stirring tank (3) is a disc groove machined on the cabinet (1). A reaction cup (36) is placed in the stirring tank (3). A magnetic stirrer is provided below the stirring tank (3). The cabinet (1) is also equipped with a power supply (6), a peristaltic pump (7), a data transmission connector (8), and a power connector (9). The power supply (6) is connected to an external power source through the power connector (9). The data transmission connector (8) and the control panel (5) are both connected to a microcontroller (10). The peristaltic pump (7) extends out of the cabinet (1) through a conduit and is connected to the reaction cup (36) and the liquid storage cup (21) respectively.

2. The sulfate content detection device as described in claim 1, characterized in that: The cabinet (1) is provided with a support partition (13) in the middle to divide the cabinet (1) into two spaces. The microcontroller (10) and the magnetic stirrer are installed in one space. The power supply (6), peristaltic pump (7), data transmission connector (8), and power connector (9) are installed in the other space. The data transmission connector (8) and power connector (9) are fixed on the side wall of the cabinet (1). The power supply (6) is fixed on the support partition (13) by the power bracket (61).

3. The sulfate content detection device as described in claim 1, characterized in that: The magnetic stirrer includes a magnet (31), two cylindrical magnets (31) are fixed at both ends of a support plate (32), the middle part of the support plate (32) is mounted on the shaft of a motor (33), the motor (33) is hung upside down in the center of a motor bracket (34), and the two ends of the motor bracket (34) are fixed to the bottom of the cabinet (1) by the support plate.

4. The sulfate content detection device as described in claim 1, characterized in that: The liquid storage tank (2) and the stirring tank (3) are respectively installed on the liquid storage platform (11) and the stirring platform (12). The height of the liquid storage platform (11) is higher than that of the stirring platform (12). The control panel (5) forms an obtuse angle with the stirring platform (12).

5. The sulfate content detection device as described in claim 1, characterized in that: A high-precision temperature sensor is installed on the tube rack (4), and the detection end of the high-precision temperature sensor extends into the reaction cup (36).

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