Solution saturation detection control system and detection control method thereof

Abstract

The invention discloses a solution saturation detection control system and a detection control method thereof.The solution saturation detection control system comprises an acid liquid supply device, a neutralization liquid supply device, a reaction device and a control device; the reaction device comprises a reaction kettle and a detection device; the detection device is arranged on the reaction kettle; the acidic liquid supply device and the neutralizing liquid supply device are respectively used for supplying liquid to the reaction kettle; the control device is used for obtaining the saturation degree of the liquid in the reaction kettle based on the work of the detection device and controlling the liquid supply work of the acid liquid supply device and the neutralization liquid supply device according to the saturation degree of the liquid in the reaction kettle. According to the invention, liquid can be conveniently added, acid liquid and neutralizing liquid can be saved, the dissolving efficiency is improved, and the use safety is improved.

Description

Technical Field

[0001] This invention relates to the field of solution saturation detection and control systems, and more specifically to a solution saturation detection and control system and its detection and control method. Background Technology

[0002] In the testing of materials, it is often necessary to dissolve the material or component to be tested using concentrated alkali or acid. This step is a necessary pretreatment step in chemical testing. Concentrated acid or alkali is used to fully dissolve materials unrelated to the components being tested, thus obtaining the material to be tested, which can then be used for subsequent component and content analysis. This method is called the "dissolution method," and it is widely recognized as a highly reliable and cost-effective method.

[0003] The "dissolution method" generally involves two steps: sample dissolution and sample washing. Sample dissolution involves using a concentrated acid or alkali, appropriate to the chemical properties of the material to be tested, to dissolve the remaining components. Sample washing involves cleaning the remaining material after dissolution with a specified solvent until it meets the requirements for subsequent quantitative analysis.

[0004] The current sample dissolution and washing processes are complex, dangerous, and extremely unfriendly to human health. The specific steps are as follows:

[0005] The concentrated acid or alkali used for sample dissolution is manually added to each sample flask according to the standard-specified quantity and precision (taking the flask, cleaning the flask, opening the flask cap, quantitatively adding the liquid, then capping the flask, placing it in the equipment to heat to the required temperature, and then manually starting the equipment). The entire process is manual and involves many steps, with operators coming into contact with reagents at each step.

[0006] After the sample dissolution is complete, each flask is manually removed, the lid is opened, and then concentrated acid or alkali is poured out using a filter screen and tweezers. During this process, it is necessary to retain as much residual sample as possible in the flask (multiple filters are used to ensure that even tiny residues invisible to the naked eye are retained and returned to the flask). This process must be careful and slow. Therefore, operators inevitably need to be in contact with concentrated acid or alkali for extended periods.

[0007] After the reagents are basically drained, the sample is washed with liquid and water by vacuum extraction. Each step of this process requires manual intervention. Afterwards, the washed sample is transferred from the flask to the designated container using a filter screen and tweezers.

[0008] Furthermore, during this process, the dissolution (acidic liquid + sample) or washing (alkali + sample or pure water + sample) consumes reaction reagents (acidic liquid, alkaline solution, or pure water). Currently, operators manually replenish the reaction reagents by extending the reaction time or observing that the sample is not dissolved or not thoroughly washed. This is inconvenient for adding liquids, environmentally unfriendly, and cannot accurately achieve efficient dissolution. Moreover, the accuracy of liquid addition is difficult to control manually, resulting in excessive use of acidic or neutralizing liquids, which is wasteful and environmentally unfriendly. Over time, this can lead to significant waste and affect dissolution efficiency. At the same time, from sample dissolution to sample washing, operators are easily exposed to highly corrosive concentrated acids or alkalis, resulting in poor safety. This places high demands on operators and the testing environment and also has a certain impact on the health of operators, directly affecting the company's safe production and cost investment. Summary of the Invention

[0009] In order to overcome the shortcomings of the prior art, one of the objectives of the present invention is to provide a solution saturation detection and control system, which can facilitate the addition of liquid, save acidic liquid and neutralizing liquid, improve dissolution efficiency, and improve safety in use.

[0010] In order to overcome the shortcomings of the prior art, the second objective of this invention is to provide a solution saturation detection and control method for a solution saturation detection and control system, which can facilitate the addition of liquid, improve the dissolution efficiency, save acidic liquid and neutralizing liquid, and improve the safety of use.

[0011] One of the objectives of this invention is achieved through the following technical solution:

[0012] A solution saturation detection and control system includes an acidic liquid supply device, a neutralizing liquid supply device, a reaction device, and a control device. The reaction device includes a reaction vessel and a detection device. The detection device is mounted on the reaction vessel. The acidic liquid supply device and the neutralizing liquid supply device are used to supply liquid to the reaction vessel. The control device is used to obtain the saturation of the liquid in the reaction vessel based on the operation of the detection device, and to control the liquid supply operation of the acidic liquid supply device and the neutralizing liquid supply device according to the saturation of the liquid in the reaction vessel.

[0013] The detection device is mounted on the reactor; the detection device includes a housing; the housing is connected to the reactor, and a plurality of vertically and parallel electrodes are arranged inside the housing; after obtaining the discharge amount, permittivity, capacitance, resistivity, and resistance value of the liquid electrolyte in the reactor under the condition of applying different volts and different frequency voltages to the plurality of electrodes, the control device is used to obtain the saturation of the liquid in the reactor based on the discharge amount, permittivity, capacitance, resistivity, and resistance value.

[0014] The control device is used to obtain the saturation of the liquid in the reactor based on the discharge amount, permittivity, capacitance, resistivity, and resistance value. The saturation of the liquid in reactor (3-1) is obtained according to the following formula:

[0015]

[0016] Where S represents the liquid saturation, and α, β, γ, δ, k T All are calibration coefficients, C m (f1) represents the measured capacitance at frequency f1, C0 represents the air dielectric reference capacitance, and ε r (f1) represents the relative permittivity of the liquid at frequency f1, A represents the effective area of ​​the electrode, d represents the distance between the parallel electrodes, and Q dis (V, f2) represents the discharge quantity at voltage V and frequency f2, ρ0 represents the solvent reference resistivity, ρ m (V, f3) represents the liquid resistivity at voltage V and frequency f3, T represents the liquid temperature, and W represents the liquid volume coefficient.

[0017] The reaction apparatus is connected to an acidic liquid supply device via an acidic liquid pipeline, and the reaction apparatus is connected to a neutralizing liquid supply device via a neutralizing liquid pipeline.

[0018] The neutralizing liquid supply device is provided with a neutralizing liquid containing chamber. The acidic liquid supply device is provided with an acidic liquid positive pressure generating device and an acidic liquid negative pressure generating device. The acidic liquid positive pressure generating device is used to increase the pressure in the acidic liquid containing chamber, and the acidic liquid negative pressure generating device is used to decrease the pressure in the acidic liquid containing chamber. The control device is used to control the operation of the acidic liquid positive pressure generating device and the acidic liquid negative pressure generating device of the acidic liquid supply device according to the saturation of the liquid in the reactor.

[0019] The neutralizing liquid supply device is provided with a neutralizing liquid containing chamber. The neutralizing liquid supply device is equipped with a neutralizing liquid positive pressure generating device and a neutralizing liquid negative pressure generating device. The neutralizing liquid positive pressure generating device is used to increase the pressure in the neutralizing liquid containing chamber, and the neutralizing liquid negative pressure generating device is used to decrease the pressure in the neutralizing liquid containing chamber. The control device is also used to control the operation of the neutralizing liquid positive pressure generating device and the neutralizing liquid negative pressure generating device of the neutralizing liquid supply device according to the saturation of the liquid in the reactor.

[0020] The acidic liquid pipeline is equipped with a first flow-pressure device for detecting the pressure and flow rate of the acidic liquid pipeline.

[0021] The neutralizing liquid pipeline is equipped with a second flow and pressure device for detecting the pressure and flow rate of the neutralizing liquid pipeline.

[0022] The reaction apparatus also includes a reaction water bath mechanism and a stirring device; the reaction vessel is located inside the reaction water bath mechanism, and the stirring device is used to cooperate with the reaction vessel.

[0023] The second objective of this invention is achieved by the following technical solution:

[0024] The detection and control method of the solution saturation detection and control system includes the following steps: after the detection device in the reaction vessel operates and obtains the discharge amount, capacitance, capacitance, resistivity and resistance value of the liquid electrolyte in the reaction vessel, the control device obtains the saturation of the liquid in the reaction vessel based on the discharge amount, capacitance, capacitance, resistivity and resistance value, and controls the liquid supply operation of the acidic liquid supply device and the neutralizing liquid supply device according to the saturation of the liquid in the reaction vessel.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] This invention combines an acidic liquid supply device, a neutralizing liquid supply device, a reaction device, and a control device. The control device obtains the saturation of the liquid in the reaction vessel based on a detection device, and controls the supply of the acidic liquid and neutralizing liquid based on the saturation of the liquid in the reaction vessel. This eliminates the need for manual liquid addition, improves the convenience of liquid addition, facilitates liquid addition, increases dissolution efficiency, and avoids the waste of acidic and neutralizing liquids caused by manual liquid addition. It saves acidic and neutralizing liquids, improves safety in use, reduces safety hazards and costs, and improves detection accuracy and efficiency. Attached Figure Description

[0027] Figure 1a This is a schematic diagram of the solution saturation detection and control system in an embodiment of the present invention.

[0028] Figure 1b This is one of the perspective views of the solution saturation detection and control system in this embodiment of the invention.

[0029] Figure 1c This is a schematic diagram of the solution saturation detection and control system in an embodiment of the present invention, omitting the outer casing.

[0030] Figure 2a This is a schematic diagram of the structure of the acidic liquid supply device in an embodiment of the present invention.

[0031] Figure 2b This is a perspective view of the acidic liquid supply device in an embodiment of the present invention.

[0032] Figure 3a This is a schematic diagram of the structure of the first flow pressure device in an embodiment of the present invention.

[0033] Figure 3bThis is a cross-sectional view of the first flow pressure device in an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the structure of the neutralizing liquid supply device in an embodiment of the present invention.

[0035] Figure 5 This is a schematic diagram of the reaction device in an embodiment of the present invention.

[0036] Figure 6a This is a schematic diagram of the lifting mechanism in an embodiment of the present invention.

[0037] Figure 6b This is a side view of the lifting mechanism in an embodiment of the present invention.

[0038] Figure 7a This is a schematic diagram of the control mechanism in an embodiment of the present invention.

[0039] Figure 7b This is a perspective view of the control mechanism in an embodiment of the present invention.

[0040] Figure 8 This is a schematic diagram of the gas purification device in an embodiment of the present invention.

[0041] Figure 9a This is one of the structural schematic diagrams of the outer shell in an embodiment of the present invention.

[0042] Figure 9b This is the second schematic diagram of the outer shell in an embodiment of the present invention.

[0043] Figure 9c This is a second perspective view of the outer casing in an embodiment of the present invention.

[0044] Figure 10 This is a schematic diagram of the structure of the second flow pressure device in an embodiment of the present invention.

[0045] Figure 11 This is a schematic diagram of the detection device in an embodiment of the present invention.

[0046] The components include: 1. Acidic liquid supply device; 1-1. Concentrated sulfuric acid tank; 1-2. Acidic liquid water bath mechanism; 1-3. Detection device; 1-4. Water bath heating wire assembly; 1-5. Acidic liquid level pipe; 1-6. Acidic liquid level detection device; 1-7. First flow and pressure device; 1-7-1. First pipeline flow sensor and pipeline pressure sensor; 1-7-2. First stepper motor; 1-7-3. First corrosion-resistant valve body; 1-7-4. First control PCB board; 1-8. Negative pressure generating device; 1-9. Acidic liquid positive pressure generating device; 1-10. Acidic liquid pipeline. 2. Neutralization liquid supply device; 2-1. Neutralization liquid tank; 2-2. Neutralization liquid level pipe; 2-3. Neutralization liquid level sensor; 2-4. Second flow and pressure device; 2-4-1. Second pipeline flow sensor and pipeline pressure sensor; 2-4-2. Second stepper motor; 2-4-3. Second corrosion-resistant valve body; 2-4-4. Second control PCB board; 2-5. Neutralization liquid pipeline; 2-6. Electro-proportional switching valve positive pressure generator; 2-7. Electro-proportional switching valve negative pressure generator; 3. Reaction device; 3-1. Reactor; 3-2. Reaction water bath mechanism; 3-3. Detection Device; 3-3-1, Housing; 3-3-2, Electrode; 3-4, Water Bath Circulation Pump Set; 3-5, Third Flow and Pressure Device; 3-6, Drainage Pipe; 4, Lifting Mechanism; 4-1, Synchronous Belt Corrosion-Resistant Z-Axis Lifting Robotic Arm; 4-2, Servo Motor; 4-3, Position Sensor; 4-4, Cable Chain; 4-5, Corrosion-Resistant Stirring Head; 4-6, Stirring Servo Motor; 4-7, Stirring Servo Motor Position Sensor; 4-8, All-Teflon Quick-Pull-Out Female Fixture; 4-9, All-Teflon Quick-Pull-Out Male Fixture; 5, Control Mechanism; 5-1, Touch Screen; 5-2, Control Device; 5- 3. Multi-axis motor control PCB board; 5-4. Corrosion-resistant chamber; 5-5. Air intake and exhaust device with neutralization filter; 5-6. Gas purification device; 5-6-1. Frame base; 5-6-2. Color-changing replaceable filter particles; 5-6-3. Variable speed axial flow fan; 6. Outer shell; 6-1. Cover; 6-2. Bar indicator light; 6-3. Base plate; 6-4. Support assembly for acidic liquid bottle; 6-5. Support assembly for neutralization liquid supply device; 6-6. Support assembly for reactor; 6-7. Left sealing plate; 6-8. Left observation glass; 6-9. Right sealing plate; 6-10. Right observation glass. Detailed Implementation

[0047] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0048] As shown in Figure 1-11, a solution saturation detection and control system includes an acidic liquid supply device (1), a neutralizing liquid supply device (2), a reaction device (3), and a control device (5). The reaction device (3) includes a reaction vessel (3-1) and a detection device (3-3). The detection device (3-3) is installed on the reaction vessel (3-1). The acidic liquid supply device (1) and the neutralizing liquid supply device (2) are used to supply liquid to the reaction vessel (3-1). The control device (5) is used to obtain the saturation of the liquid in the reaction vessel (3-1) based on the operation of the detection device (3-3), and to control the liquid supply operation of the acidic liquid supply device (1) and the neutralizing liquid supply device (2) according to the saturation of the liquid in the reaction vessel (3-1). The saturation of the solution refers to the degree to which the concentration of the solute in the liquid reaches a certain upper limit, and no more solute can be dissolved, thus achieving saturation.

[0049] When in use, the detection device works, and the control device (5) and the integrated detection device (3-3) obtain the saturation of the liquid in the reactor 3-1. Based on the saturation of the liquid in the reactor 3-1, the acid liquid supply device (1) and the neutral liquid supply device (2) are controlled to supply the liquid. For example, if the control device (5) and the integrated detection device (3-3) obtain that the saturation A of the liquid in the reactor 3-1 is lower than the predetermined saturation C, then the acid liquid supply device 1 is controlled to supply the acid liquid to the reactor 3, and the neutral liquid supply device 2 is controlled to supply the neutral liquid to the reactor 3, so as to realize the liquid supply. Therefore, the solution saturation detection and control system provided by the present invention combines an acidic liquid supply device, a neutralizing liquid supply device, a reaction device, and a control device. During the dissolution process (acidic liquid + sample) or the cleaning process (alkali + sample or pure water + sample), as the liquid in the reaction vessel 3-1 is gradually consumed, the control device obtains the saturation of the liquid in the reaction vessel based on the detection device, and controls the operation of the acidic liquid supply device and the neutralizing liquid supply device according to the saturation of the liquid in the reaction vessel. This allows the acidic liquid supply device 1 to supply acidic liquid to the reaction vessel 3, and the neutralizing liquid supply device 2 to supply neutralizing liquid to the reaction vessel 3, thus eliminating the need for manual liquid addition, improving the convenience of liquid addition, and making liquid addition easier. Moreover, the control device controls the liquid supply operation of the acidic liquid supply device and the neutralizing liquid supply device according to the saturation of the liquid in the reaction vessel, avoiding the waste of acidic liquid and neutralizing liquid caused by manual liquid addition, saving acidic liquid and neutralizing liquid, improving dissolution efficiency, improving safety in use, and reducing safety hazards and costs.

[0050] The detection device 3-3 includes a housing 3-3-1 and several electrodes 3-3-2; the housing 3-3-1 is connected to the reaction vessel 3-1, and several vertically and parallelly arranged electrodes 3-3-2 are arranged inside the housing 3-3-1; after obtaining the discharge amount, capacitance, capacitance, resistivity and resistance value of the liquid electrolyte in the reaction vessel 3-1 under the condition of applying different volts and different frequency voltages to the several electrodes 3-3-2, the control device 5 is used to obtain the saturation of the liquid in the reaction vessel 3-1 based on the discharge amount, capacitance, capacitance, resistivity and resistance value, and summarize the optimal and efficient solubility saturation and cleaning saturation for each sample.

[0051] The detection device 3-3 can be a liquid level sensor group, etc. By applying different volts and different frequency voltages to several electrodes 3-3-2, the liquid in the shell 3-3-1 is energized, and the discharge amount, permittivity, capacitance, resistivity and resistance value of the liquid electrolyte in the reaction vessel 3-1 can be detected.

[0052] The control device 5 is used to obtain the saturation of the liquid in reactor 3-1 based on the discharge amount, permittivity, capacitance, resistivity, and resistance value, and the saturation of the liquid in reactor 3-1 is obtained according to the following formula:

[0053]

[0054] Where S represents the liquid saturation, and α, β, γ, δ, k T All are calibration coefficients, C m (f1) represents the measured capacitance at frequency f1, C0 represents the air dielectric reference capacitance, and ε r (f1) represents the relative permittivity of the liquid at frequency f1, A represents the effective area of ​​the electrode, d represents the distance between the parallel electrodes, and Q dis (V, f2) represents the discharge quantity at voltage V and frequency f2, ρ0 represents the solvent reference resistivity, ρ m (V,f3) represents the liquid resistivity at voltage V and frequency f3, T represents the liquid temperature, and W represents the liquid volume coefficient.

[0055] The framework formula for the relationship between dielectric constant and capacitance in the parallel plate model is as follows:

[0056]

[0057] Where ε0 represents the vacuum permittivity (8.854 × 10⁻⁶). -12 F / m);

[0058] The formula relating resistivity and resistance is as follows:

[0059]

[0060] Among them, R m The measured resistance (Ω) is represented by L, and the electrode immersion depth (m) is represented by L.

[0061] The formula relating discharge capacity to ion concentration is as follows:

[0062]

[0063] Among them, c ion It represents the ion concentration (mol / L) and is positively correlated with the solubility of the solute;

[0064] The formula for the temperature compensation model is as follows:

[0065] ε r (T)=ε r0 ·[1+k ε (T-T0)]

[0066] ρ m (T)=ρ m0 ·[1+k ρ (T-T0)]

[0067] Where, k ε k ρ Temperature coefficients (°C) representing dielectric constant and resistivity, respectively. -1 ).

[0068] The calibration coefficients α, β, γ, δ, k T It can be adjusted or set according to actual needs or through multiple experiments.

[0069] Of course, the control device 5 can also obtain the saturation of the liquid in the reaction vessel 3-1 in other ways, but obtaining the saturation of the liquid in the reaction vessel 3-1 in the above way is the optimal embodiment of the present invention, which can improve the detection accuracy.

[0070] The acidic liquid supply device 1 is connected to the reaction device 3 through acidic liquid pipeline 1-10; the neutralizing liquid supply device 2 is connected to the reaction device 3 through neutralizing liquid pipeline 2-5.

[0071] The acidic liquid supply device 1 is equipped with an acidic liquid containing chamber. It also includes an acidic liquid positive pressure generator 1-9 and an acidic liquid negative pressure generator 1-8. The positive pressure generator 1-9 increases the pressure within the acidic liquid containing chamber, while the negative pressure generator 1-8 decreases the pressure. The control device 5 controls the operation of the acidic liquid positive pressure generator 1-9 and the acidic liquid negative pressure generator 1-8 based on the saturation level of the liquid in the reaction vessel 3-1. During operation, the control device 5 controls the operation of the acidic liquid negative pressure generator 1-8 and the acidic liquid positive pressure generator 1-9 based on the saturation level of the liquid in the reaction vessel 3-1. The operation of the positive pressure generator 1-9 increases the pressure within the acidic liquid containing chamber, causing the acidic liquid to flow under pressure through the acidic liquid pipeline 1-10 to the reaction vessel 3, thus supplying acidic liquid to the reaction vessel 3. By operating the acidic liquid negative pressure generating device 1-8, the pressure inside the acidic liquid receiving chamber can be reduced, creating a negative pressure inside the acidic liquid receiving chamber, thereby prompting the external acidic liquid supply source to flow into the acidic liquid receiving chamber and supplying acidic liquid to the acidic liquid receiving chamber.

[0072] The acidic liquid negative pressure generating devices 1-8 are electro-proportional switching valve negative pressure generators, and the acidic liquid positive pressure generating devices 1-9 are electro-proportional switching valve positive pressure generators. This allows for precise liquid addition without requiring any motor structure to directly contact the acidic liquid, reducing the risk of failure and cost, and greatly improving the stability and safety of the equipment.

[0073] The neutralizing liquid supply device 2 is equipped with a neutralizing liquid containing chamber. A positive pressure generating device 2-6 and a negative pressure generating device 2-7 are mounted on the neutralizing liquid supply device 2. The positive pressure generating device 2-6 increases the pressure within the neutralizing liquid containing chamber, and the negative pressure generating device 2-7 decreases the pressure within the neutralizing liquid containing chamber. The control device 5 is also used to control the operation of the positive pressure generating device 2-6 and the negative pressure generating device 2-7 of the neutralizing liquid supply device 2 based on the saturation level of the liquid in the reaction vessel 3-1. In use, the control device 5 controls the operation of the negative pressure generating device 2-7 and the positive pressure generating device 2-6 based on the saturation level of the liquid in the reaction vessel 3-1. The operation of the positive pressure generating device 2-6 increases the pressure within the neutralizing liquid containing chamber, causing the neutralizing liquid in the containing chamber to flow through the neutralizing liquid pipeline 2-5 to the reaction device 3 under pressure, thus supplying neutralizing liquid to the reaction device 3. By operating the neutral liquid negative pressure generating device 2-7, the pressure inside the neutral liquid containment chamber can be reduced, creating a negative pressure inside the neutral liquid containment chamber. This causes the external neutral liquid supply source to flow into the neutral liquid containment chamber, supplying neutral liquid to the neutral liquid containment chamber. For example, if the control device (5) and the comprehensive detection device (3-3) obtain that the saturation A of the liquid in the reactor 3-1 is lower than the predetermined saturation C, then the control device (5) controls the operation of the acid liquid positive pressure generating device 1-9 to increase the pressure inside the acid liquid containment chamber, and the control device (5) controls the operation of the neutral liquid positive pressure generating device 2-6 to increase the pressure inside the neutral liquid containment chamber. This causes the acid liquid inside the acid liquid containment chamber to flow through the acid liquid pipeline 1-10 to the reactor 3 under pressure, and the neutral liquid inside the neutral liquid containment chamber to flow through the neutral liquid pipeline 2-5 to the reactor 3 under pressure, thus supplying acid liquid and neutral liquid to the reactor 3.

[0074] The neutral liquid negative pressure generating device 2-7 is an electro-proportional switching valve negative pressure generator, and the neutral liquid positive pressure generating device 2-6 is an electro-proportional switching valve positive pressure generator. This allows for precise liquid addition without requiring any motor structure to directly contact the neutral liquid, reducing the risk of failure and cost, and greatly improving the stability and safety of the equipment.

[0075] The acidic liquid pipeline 1-10 is equipped with a first flow and pressure device 1-7 for detecting the pressure and flow rate of the acidic liquid pipeline 1-10; the neutralizing liquid pipeline 2-5 is equipped with a second flow and pressure device 2-4 for detecting the pressure and flow rate of the neutralizing liquid pipeline 2-5.

[0076] The first flow and pressure device 1-7 includes a first pipeline flow sensor and a pipeline pressure sensor 1-7-1 and a first corrosion-resistant valve body 1-7-3. The first corrosion-resistant valve body 1-7-3 is connected to the acidic liquid pipeline 1-10. The first pipeline flow sensor and the pipeline pressure sensor 1-7-1 are used to detect the pressure and liquid flow of the first corrosion-resistant valve body 1-7-3.

[0077] The first pipeline flow sensor and pipeline pressure sensor 1-7-1 detect the flow rate of the acidic liquid in the acidic liquid pipeline 1-10. Based on this flow rate, the control device 5 obtains the initial acidic liquid addition amount per unit time. By detecting continuous pressure changes in the acidic liquid pipeline 1-10, the control device 5 obtains an adjustment value for the acidic liquid addition amount per unit time. Finally, based on the initial and adjustment values, the control device 5 determines the total acidic liquid addition amount per unit time. During operation, the control device 5 uses the values ​​detected by the first pipeline flow sensor and pipeline pressure sensor 1-7-1 to determine the total acidic liquid addition amount per unit time, and then controls the acidic liquid supply device 1 to supply the acidic liquid to the reaction device 3 based on this combined amount. In this embodiment, the flow sensor in the first pipeline flow sensor and the pipeline pressure sensor 1-7-1 can be used to obtain the value before the decimal point of the acid liquid addition amount, and the pressure sensor in the first pipeline flow sensor and the pipeline pressure sensor 1-7-1 can continuously output the value after the decimal point of the acid liquid addition amount. By adding the two values ​​together, the accurate value of the concentrated acid added per unit time can be obtained.

[0078] In this embodiment, the first flow pressure device 1-7 may also employ a first micro-stepping motor 1-7-2 and a first control PCB board 1-7-4.

[0079] The second flow and pressure device 2-4 includes a second pipeline flow sensor and a pipeline pressure sensor 2-7-1, and a second corrosion-resistant valve body 2-7-3. The second corrosion-resistant valve body 2-7-3 is connected to the neutralized liquid pipeline 2-5. The second pipeline flow sensor and the pipeline pressure sensor 2-7-1 are used to detect the pressure and liquid flow of the second corrosion-resistant valve body 2-7-3.

[0080] The second flow and pressure device 2-4 includes a second pipeline flow sensor and a pipeline pressure sensor 2-4-1. By detecting the flow rate of the neutralizing liquid in the neutralizing liquid pipeline 2-5, the control device 5 calculates the initial amount of neutralizing liquid added per unit time based on the flow rate. It also calculates an adjustment value for the amount of neutralizing liquid added per unit time by detecting continuous pressure changes in the neutralizing liquid pipeline 2-5. Finally, based on the initial and adjusted values, the control device 5 calculates the total amount of neutralizing liquid added per unit time. During operation, the control device 5 calculates the amount of neutralizing liquid added per unit time based on the values ​​detected by the second pipeline flow sensor and the pipeline pressure sensor 2-4-1, and controls the neutralizing liquid supply device 2 to supply the neutralizing liquid to the reaction device 3 according to this amount. In this embodiment, the flow sensor in the second pipeline flow sensor and the pipeline pressure sensor 2-4-1 can be used to obtain the decimal value of the neutral liquid addition amount per unit time, and the pressure sensor in the second pipeline flow sensor and the pipeline pressure sensor 2-4-1 can continuously output the decimal value of the neutral liquid addition amount per unit time. By adding the two values ​​together, the accurate value of the neutral liquid addition amount per unit time can be obtained.

[0081] In this embodiment, the second flow pressure device 2-4 may also employ a second stepper motor 2-7-2 and a second control PCB board 2-7-4.

[0082] The solution saturation detection and control system also includes an acidic liquid level detection device 1-6, which is used to detect the liquid level in the acidic liquid container. The control device 5 is used to control the operation of the acidic liquid positive pressure generator 1-9 and the acidic liquid negative pressure generator 1-8 of the acidic liquid supply device 1 based on the saturation of the liquid in the reaction vessel 3-1, the detection value of the first flow pressure device 1-7, and the detection value of the acidic liquid level detection device 1-6. During operation, the control device 5 controls the acidic liquid supply device 1 to supply acidic liquid to the reaction device 3 based on the liquid saturation feedback from the reaction device 3. This automatically adds a fixed amount of acidic liquid during the dissolution process, greatly improving the dissolution efficiency. A precise real-time acidic liquid supply system is formed by the acidic liquid positive pressure generator 1-9, the acidic liquid negative pressure generator 1-8, the first flow and pressure device 1-7, and the acidic liquid level detection device 1-6. The control device 5 can... The system obtains the rate at which the acidic liquid supply device 1 supplies acidic liquid to the reaction device 3, accurately acquiring the amount of neutralizing liquid added per unit time. The control device 5 controls the operation of the acidic liquid positive pressure generating devices 1-9 and the coordination of the acidic liquid negative pressure generating devices 1-8 and the acidic liquid level detection device 1-6 for liquid addition. The system also controls the operating time of the acidic liquid positive pressure generating devices 1-9, thereby achieving real-time and more precise liquid addition. This ensures the required concentration of the reaction reagents in the reaction device 3, allowing for more precise control of the pH of the reaction reagents in the reaction device 3, improving the efficiency of the reaction or cleaning process, and reducing reagent consumption. In this embodiment, the acidic liquid level detection device 1-6 is a concentrated sulfuric acid level sensor.

[0083] An acidic liquid level pipe 1-5 is connected to the acidic liquid pipeline 1-10, and an acidic liquid level detection device 1-6 is installed on the acidic liquid level pipe 1-5. Specifically, the acidic liquid level pipe 1-5 is connected to and communicates with the acidic liquid pipeline 1-10.

[0084] The acidic liquid supply device 1 includes a concentrated sulfuric acid tank 1-1 and an acidic liquid water bath mechanism 1-2. The concentrated sulfuric acid tank 1-1 is disposed within the acidic liquid water bath mechanism 1-2, and the acidic liquid receiving cavity is formed on the concentrated sulfuric acid tank 1-1. More preferably, the acidic liquid supply device 1 further includes a detection device 1-3 and a water bath heating wire assembly 1-4. Both the detection device 1-3 and the water bath heating wire assembly 1-4 are disposed on the acidic liquid water bath mechanism 1-2. In use, the liquid level in the acidic liquid water bath mechanism 1-2 can be detected by the detection device 1-3, and the liquid in the acidic liquid water bath mechanism 1-2 can be heated by the water bath heating wire assembly 1-4, so that the heated liquid can transfer heat to the acidic liquid in the acidic liquid receiving cavity. Based on the linkage between the water bath heating wire assembly 1-4 and the detection device 1-3, the temperature control of the acidic liquid in the concentrated sulfuric acid tank 1-1 is achieved through heating by the acidic liquid water bath mechanism 1-2, and the signal is transmitted to the control device 5.

[0085] The solution saturation detection and control system also includes a neutral liquid level detection device 2-3, which is used to detect the liquid level in the neutral liquid container. The control device 5 is used to control the operation of the neutral liquid positive pressure generator 2-6 and the neutral liquid negative pressure generator 2-7 of the neutral liquid supply device 2 based on the saturation of the liquid in the reactor 3-1, the detection value of the first flow pressure device 2-7, and the detection value of the neutral liquid level detection device 2-6. During operation, the control device 5 controls the neutralizing liquid supply device 2 based on the liquid saturation feedback from the reaction device 3, causing the neutralizing liquid supply device 2 to supply neutralizing liquid to the reaction device 3. This automatically adds a fixed amount of neutralizing liquid during the dissolution process, greatly improving the dissolution efficiency. A precise real-time neutralizing liquid addition system is formed by the neutralizing liquid positive pressure generator 2-6, the neutralizing liquid negative pressure generator 2-7, the second flow and pressure device 2-4, and the neutralizing liquid level detection device 2-3. The control device 5 can... The system obtains the rate at which the neutralizing liquid supply device 2 supplies neutralizing liquid to the reaction device 3, accurately acquiring the amount of neutralizing liquid added per unit time. The control device 5 controls the operation of the neutralizing liquid positive pressure generator 2-6 and the neutralizing liquid negative pressure generator 2-7 in conjunction with the neutralizing liquid level detection device 2-6 for liquid addition. The system also controls the operating time of the neutralizing liquid positive pressure generator 2-6, thereby achieving real-time and more precise liquid addition. This ensures the required concentration of the reaction reagents in the reaction device 3, allowing for more precise control of the pH of the reaction reagents in the reaction device 3, improving reaction or cleaning efficiency, and reducing reagent consumption. In this embodiment, the neutralizing liquid level detection device 2-3 is a neutralizing liquid level sensor 2-3.

[0086] The neutralizing liquid pipeline 2-5 is connected to a neutralizing liquid level pipe 2-2, and the neutralizing liquid level detection device 2-3 is installed on the neutralizing liquid level pipe 2-2. Specifically, the neutralizing liquid level pipe 2-2 is connected to and communicates with the neutralizing liquid pipeline 2-5.

[0087] The neutralizing liquid supply device 2 includes a neutralizing liquid tank 2-1, and the neutralizing liquid receiving cavity is formed on the neutralizing liquid tank 2-1.

[0088] The reaction supply device includes a reaction vessel 3-1 and a reaction water bath mechanism 3-2, with the reaction vessel 3-1 housed within the reaction water bath mechanism 3-2. According to the control device 5, the reaction vessel 3-1 can be supplied with acidic liquid from the acidic liquid supply device 1, or with neutralizing liquid such as concentrated alkali or pure water from the neutralizing liquid supply device 2.

[0089] The reaction apparatus 3 further includes a detection device 3-3 and a stirring device; the stirring device is used to cooperate with the reaction vessel 3-1, and the detection device 3-3 is installed on the reaction vessel 3-1; a drain pipe 3-6 is connected to the reaction vessel 3-1; a third flow and pressure device 3-5 is installed on the drain pipe 3-6 for detecting the pressure and liquid flow of the drain pipe 3-6.

[0090] The third flow and pressure device 3-5 includes a third pipeline flow sensor, a pipeline pressure sensor, and a third corrosion-resistant valve body. The third corrosion-resistant valve body is connected to the drain pipe 3-6. The third pipeline flow sensor and the pipeline pressure sensor are used to detect the pressure and liquid flow of the third corrosion-resistant valve body to accurately obtain the discharge volume of the drain pipe 3-6.

[0091] In this embodiment, the third flow pressure device 3-5 may also employ a third stepper motor and a third control PCB board.

[0092] The bath detection device 3-3, in conjunction with the pressure detection of the third flow and pressure device 3-5, can realize intelligent saturation control closed loop. Through the linkage of this closed-loop intelligent saturation control system, acidic liquid supply device 1, and neutralizing liquid supply device 2, efficiency and reagent savings can be greatly improved.

[0093] The dissolution process (acidic liquid + sample) or the cleaning process (alkali + sample or pure water + sample) consumes the efficiency of the liquid (acidic liquid, alkaline liquid, or pure water) in the reaction vessel 3-1. Traditional methods do not consider this efficiency and simply rely on extending the reaction time or adding reaction reagents when incomplete dissolution or cleaning is observed to achieve sufficient dissolution or cleaning. This invention uses a simple detection device 3-3, in conjunction with an acidic liquid supply device 1 and a neutralizing liquid supply device 2, to form a linked system. By maintaining the saturation of the reaction reagent (i.e., the liquid in the reaction vessel 3-1) at a certain value (precisely determined by six electrodes), the efficiency of the reaction reagent is kept at an optimal level with less reagent, thereby achieving substantial efficiency improvement and environmentally friendly, energy-saving, and reagent-saving effects.

[0094] The reaction water bath mechanism 3-2 is connected to a water bath circulation pump group 3-4, which is mainly used for temperature control through the temperature-controlled reaction chamber composed of the reaction vessel 3-1, the reaction water bath mechanism 3-2, and the water bath circulation pump group 3-4.

[0095] The reaction apparatus 3 includes a lifting device 4, which is used to move the stirring device into or out of the reaction vessel 3-1. Specifically, the stirring device includes a Z-axis lifting robotic arm 4-1, a corrosion-resistant stirring head 4-5, a stirring servo motor 4-6, a stirring servo motor position sensor 4-7, a Teflon quick-connect female fixture 4-8, and a Teflon quick-connect male fixture 4-9. The stirring servo motor 4-6 is mounted on the lifting end of the Z-axis lifting robotic arm 4-1 and is used to drive the corrosion-resistant stirring head 4-5 to rotate. The Teflon quick-connect female fixture 4-8 is mounted on the corrosion-resistant stirring head 4-5, and the Teflon quick-connect male fixture 4-9 cooperates with the Teflon quick-connect female fixture 4-8. During the testing process, the Teflon quick-connect male fixture 4-9 and the Teflon quick-connect female fixture 4-8 cooperate to achieve one-time sample loading, completely avoiding sample loss due to repeated sample transfer. In use, the lifting device 4 drives the Z-axis lifting robotic arm 4-1 to extend the corrosion-resistant stirring head 4-5 into the reactor 3-1, and under the drive of the stirring servo motor 4-6, the corrosion-resistant stirring head 4-5 stirs in the reactor 3-1.

[0096] The lifting device 4 can be a servo motor 4-2 and a transmission device. The transmission device can be a lead screw drive or a synchronous belt drive, as long as it can drive the stirring device to lift. The reaction device 3 may also include a stirring servo motor position sensor 4-7, a position sensor 4-3, and a drag chain 4-4. The position sensor 4-3 is used to detect the position of the lifting end.

[0097] like Figure 7a , Figure 7bAs shown, the solution saturation detection and control system also includes a housing 6, a touch screen 5-1, a central PLC 5-2, a multi-axis motor control PCB board 5-3, a stainless steel (double Teflon coating) corrosion-resistant box 5-4, an air intake and exhaust device with neutralization filtration 5-5, and an air purification device 5-6. The touch screen 5-1 is configured to work in conjunction with the housing 6. The housing 6 is equipped with indicator lights 6-2. The acidic liquid supply device 1, the neutralization liquid supply device 2, and the reaction device 3 are disposed inside the housing 6. An observation glass is provided on the side of the housing 6.

[0098] like Figure 8 As shown, the gas purification device 5-6 includes color-changing replaceable filter particles 5-6-2 and a variable-speed axial flow fan 5-6-3. The variable-speed axial flow fan 5-6-3 is used to direct airflow through the color-changing replaceable filter particles 5-6-2, so that the airflow inside the outer casing 6 can be filtered by the variable-speed axial flow fan 5-6-3, thereby achieving corrosion protection of the equipment. The color-changing replaceable filter particles 5-6-2 are made of reusable acid and alkali filter media. The gas purification device 5-6 also includes a frame base 5-6-1, on which the variable-speed axial flow fan 5-6-3 is mounted, and the frame base 5-6-1 is mounted on the outer casing 6.

[0099] like Figures 9a to 9c As shown, the outer casing 6 includes an outer cover 6-1, a bar-shaped indicator light 6-2, a base plate 6-3, a support group for the acidic liquid bottle 6-4, a support group for the neutralizing liquid supply device 6-5, a support group for the reaction vessel 6-6, a left sealing plate 6-7, a left observation glass 6-8, a right sealing plate 6-9, and a right observation glass 6-10.

[0100] Of course, the structure of the outer shell 6 is not limited to this and can be set according to actual needs.

[0101] This solution saturation detection and control system integrates the sample dissolution and washing functions of the dissolution method. During operation, the operator only needs to follow the device prompts to load the sample, add concentrated acidic liquid or neutralizing liquid, and start the device with one button. The equipment has a high degree of automation. After completion, the device prompts for sample removal, and the operator can simply take out the sample that has been dissolved and washed. This greatly reduces the workload of the operator, improves the safety of the test, and greatly ensures the consistency of each test and the accuracy of liquid addition. At the same time, it uses Teflon quick-release female fixture 4-8 and Teflon quick-release male fixture 4-9 in cooperation, so the entire test process only requires one sample loading, completely avoiding sample loss caused by repeated sample transfer. In addition, this solution saturation detection and control system can be set in various ways according to actual needs, such as: temperature, amount of acidic liquid or concentrated alkali, amount of neutralizing liquid added, amount of pure water or tap water added, number of cycles of acidic liquid or concentrated alkali, number of cycles of adding neutralizing liquid, and number of cycles of adding pure water or tap water, making it more flexible to use.

[0102] Preferably, the present invention can also connect the various functional parts of the equipment as a whole using Teflon dissolving tubes. Each functional part is made of quartz or corrosion-resistant stainless steel (double Teflon coating). The key acidic liquid highly corrosive part uses a combination of full quartz and Teflon, sealing the highly corrosive acid inside the pipes. This minimizes the harm of harmful corrosive acidic liquids and concentrated alkali reagents to operators and the environment, greatly ensuring the safety of testing personnel. At the same time, since the reaction process is all sealed inside the equipment, compared with the open testing process, it can greatly reduce the company's costs and safety maintenance costs, and extend the service life.

[0103] The present invention also discloses a detection and control method for the above-mentioned solution saturation detection and control system, comprising the following steps: after the detection device 3-3 in the reaction vessel 3-1 operates to obtain the discharge amount, capacitance, capacitance, resistivity and resistance value of the liquid electrolyte in the reaction vessel 3-1, the control device 5 obtains the saturation of the liquid in the reaction vessel 3-1 according to the discharge amount, capacitance, capacitance, resistivity and resistance value, and controls the liquid supply of the acidic liquid supply device 1 and the neutralizing liquid supply device 2 according to the saturation of the liquid in the reaction vessel 3-1.

[0104] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A solution saturation detection and control system, characterized in that: The apparatus includes an acidic liquid supply device (1), a neutralizing liquid supply device (2), a reaction device (3), and a control device (5). The reaction device (3) includes a reaction vessel (3-1) and a detection device (3-3). The detection device (3-3) is installed on the reaction vessel (3-1). The acidic liquid supply device (1) and the neutralizing liquid supply device (2) are used to supply liquid to the reaction vessel (3-1). The control device (5) is used to obtain the saturation of the liquid in the reaction vessel (3-1) based on the operation of the detection device (3-3), and to control the liquid supply operation of the acidic liquid supply device (1) and the neutralizing liquid supply device (2) according to the saturation of the liquid in the reaction vessel (3-1).

2. The solution saturation detection and control system as described in claim 1, characterized in that: The detection device (3-3) is installed on the reactor (3-1); the detection device (3-3) includes a housing (3-3-1); the housing (3-3-1) is connected to the reactor (3-1), and a plurality of vertically and parallelly arranged electrodes (3-3-2) are arranged inside the housing (3-3-1); after obtaining the discharge amount, capacitance, capacitance, resistivity and resistance value of the liquid electrolyte in the reactor (3-1) under the condition of applying different volts and different frequency voltages to the plurality of electrodes (3-3-2), the control device (5) is used to obtain the saturation of the liquid in the reactor (3-1) according to the discharge amount, capacitance, capacitance, resistivity and resistance value.

3. The solution saturation detection and control system as described in claim 2, characterized in that: The control device (5) is used to obtain the saturation of the liquid in the reactor (3-1) based on the discharge amount, capacitance, capacitance, resistivity, and resistance value, and the saturation of the liquid in the reactor (3-1) is obtained according to the following formula: Where S represents the liquid saturation, and α, β, γ, δ, k T All are calibration coefficients, C m (f1) represents the measured capacitance at frequency f1, C0 represents the air dielectric reference capacitance, and ε r (f1) represents the relative permittivity of the liquid at frequency f1, A represents the effective area of ​​the electrode, d represents the distance between the parallel electrodes, and Q dis (V,f2) represents the discharge quantity at voltage V and frequency f2, ρ0 represents the solvent reference resistivity, and ρ m (V,f3) represents the liquid resistivity at voltage V and frequency f3, T represents the liquid temperature, and W represents the liquid volume coefficient.

4. The solution saturation detection and control system as described in claim 1, characterized in that: The reaction device (3) is connected to the acidic liquid supply device (1) through the acidic liquid pipeline (1-10), and the reaction device (3) is connected to the neutralizing liquid supply device (2) through the neutralizing liquid pipeline (2-5).

5. The solution saturation detection and control system as described in claim 4, characterized in that: The neutralizing liquid supply device (2) is provided with a neutralizing liquid containing chamber. The acidic liquid supply device (1) is provided with an acidic liquid positive pressure generating device (1-9) and an acidic liquid negative pressure generating device (1-8). The acidic liquid positive pressure generating device (1-9) is used to increase the pressure in the acidic liquid containing chamber, and the acidic liquid negative pressure generating device (1-8) is used to decrease the pressure in the acidic liquid containing chamber. The control device (5) is used to control the operation of the acidic liquid positive pressure generating device (1-9) and the acidic liquid negative pressure generating device (1-8) of the acidic liquid supply device (1) according to the saturation of the liquid in the reaction vessel 3-1.

6. The solution saturation detection and control system as described in claim 4, characterized in that: The neutralizing liquid supply device (2) is provided with a neutralizing liquid containing chamber. The neutralizing liquid supply device (2) is equipped with a neutralizing liquid positive pressure generating device (2-6) and a neutralizing liquid negative pressure generating device (2-7). The neutralizing liquid positive pressure generating device (2-6) is used to increase the pressure inside the neutralizing liquid containing chamber, and the neutralizing liquid negative pressure generating device (2-7) is used to decrease the pressure inside the neutralizing liquid containing chamber. The control device (5) is also used to control the operation of the neutralizing liquid positive pressure generating device (2-6) and the neutralizing liquid negative pressure generating device (2-7) of the neutralizing liquid supply device (2) according to the saturation of the liquid in the reaction vessel 3-1.

7. The solution saturation detection and control system as described in claim 4, characterized in that: The acidic liquid pipeline (1-10) is equipped with a first flow and pressure device (1-7) for detecting the pressure and flow rate of the acidic liquid pipeline (1-10).

8. The solution saturation detection and control system as described in claim 4, characterized in that: The neutralizing liquid pipeline (2-5) is equipped with a second flow and pressure device (2-4) for detecting the pressure and flow rate of the neutralizing liquid pipeline (2-5).

9. The solution saturation detection and control system as described in claim 1, characterized in that: The reaction apparatus (3) further includes a reaction water bath mechanism (3-2) and a stirring device; the reaction vessel (3-1) is located inside the reaction water bath mechanism (3-2), and the stirring device is used to cooperate with the reaction vessel (3-1).

10. The detection and control method of the solution saturation detection and control system as described in claim 1, characterized in that: Includes the following steps: After the detection device (3-3) in the reactor (3-1) operates and obtains the discharge amount, capacitance, capacitance, resistivity and resistance value of the liquid electrolyte in the reactor (3-1), the control device 5 obtains the saturation of the liquid in the reactor (3-1) based on the discharge amount, capacitance, capacitance, resistivity and resistance value, and controls the liquid supply operation of the acidic liquid supply device (1) and the neutralizing liquid supply device (2) according to the saturation of the liquid in the reactor (3-1).

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