Automatic control device for solution preparation concentration

Abstract

The utility model relates to the technical field of solution preparation concentration control, and discloses a solution preparation concentration automatic control device, which comprises a device mechanical mechanism and a power and logic control mechanism, the device mechanical mechanism is connected with the power and logic control mechanism through a circuit, and the device mechanical mechanism comprises an automatic stirring device. One side of the automatic stirring device is fixedly connected with an automatic feeding device, the automatic feeding device adopts a spiral conveying structure, and a liquid level detection device is fixedly arranged on one side of the outer part of the automatic stirring device. According to the utility model, a core logic technology that a preparation automation control system firstly prepares a high-concentration mother solution and then dilutes the mother solution into a low-concentration mother solution is adopted, the required total amount of the solute is automatically calculated according to the target solution amount, the high-concentration solution is firstly prepared and then diluted to the target concentration, and the concentration change is monitored and the solute addition amount is adjusted in real time in the dilution process; the solution concentration is controlled to accurately reach the target concentration and the target volume.

Description

Technical Field

[0001] This utility model relates to the field of solution preparation concentration control technology, and in particular to an automatic control device for solution preparation concentration. Background Technology

[0002] Solid solute preparation refers to the process of dissolving a solid substance in a solvent to prepare a solution with a certain concentration. The solid substance is used as the solute, and an appropriate amount of solvent (usually water) is added. Through stirring and other operations, the solid substance is fully dissolved to obtain a solution of the required concentration. In many fields such as chemical experiments, industrial production, and daily life, it is often necessary to use solutions of a certain concentration to complete various operations. Solid solute preparation is an important means to achieve this purpose.

[0003] Existing patent (publication number: CN219964610U) discloses that "this utility model relates to the technical field of solid-liquid mixing devices, and in particular discloses an automatic laboratory solid solute solution preparation instrument, including a preparation tank and a receiving tank. The preparation tank is equipped with a motor, and a stirring shaft is installed inside the preparation tank. The output shaft of the motor is connected to the stirring shaft, and the stirring shaft is equipped with stirring teeth. An inlet pipe and an outlet pipe are connected to the preparation tank, with the end of the outlet pipe extending into the receiving tank. A first control valve is installed on the inlet pipe, and a second control valve is installed on the outlet pipe. It also includes an electrical control box, and all electrical components of the automatic preparation instrument are connected to the electrical control box. This utility model realizes the automatic preparation of solid solute solutions, enabling rapid and large-scale preparation of solid solute solutions in testing laboratories, improving work efficiency, ensuring the mixing accuracy of solid solute solutions, and thus ensuring the reliability of experimental data."

[0004] In the process of realizing this application, the inventors discovered the following problems in the prior art: when preparing a solution of a specified concentration from a large amount of solid solute, if the general direct preparation method is used, the solution concentration fluctuates greatly due to the long amount of solid filler and the long dissolution time, which makes it difficult to control the target concentration and takes a long time.

[0005] Therefore, those skilled in the art have provided an automatic control device for solution preparation concentration to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic control device for solution preparation concentration. To improve production efficiency, this invention employs the core logic technology of an automated preparation control system that first prepares a high-concentration mother liquor and then dilutes it to a low concentration. Based on the target solution volume, the system automatically calculates the total amount of solute required, first prepares a high-concentration solution, and then dilutes it to the target concentration. During the dilution process, the system also monitors the concentration change in real time, adjusts the amount of solute added, and controls the solution concentration to accurately reach the target concentration and volume.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An automatic control device for solution preparation concentration includes a mechanical mechanism and a power and logic control mechanism, wherein the mechanical mechanism and the power and logic control mechanism are connected by a circuit.

[0009] The mechanical structure of the device includes an automatic stirring device, and an automatic feeding device is fixedly connected to one side of the automatic stirring device. The automatic feeding device adopts a spiral conveying structure.

[0010] Furthermore, a liquid level detection device is fixedly installed on one side of the outside of the automatic stirring device, and the liquid level detection device is composed of a liquid level gauge.

[0011] Furthermore, a concentration detection device is fixedly installed on the other side of the external part of the automatic stirring device, and the concentration detection device is composed of a concentration meter.

[0012] Furthermore, a water supply electric valve is fixedly connected to one side of the upper end of the automatic stirring device.

[0013] Furthermore, the automatic stirring device includes a stirring tank, a motor is connected to the upper end of the stirring tank, and stirring blades are connected to the output end of the motor.

[0014] Furthermore, the power and logic control mechanism includes a power control system and a PLC logic control system, which are bidirectionally connected.

[0015] Furthermore, the power control system consists of a pre-configuration module, a dynamic dilution module, and a closed-loop feedback system.

[0016] Furthermore, the PLC logic control system is composed of a PLC controller.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model proposes an automatic control device for solution preparation concentration. By employing the core logic of "high-concentration mother liquor pre-preparation + dynamic dilution," it possesses a highly automated solution preparation logic control structure. For production environments such as factories, enterprises, and mines, it significantly improves solution preparation efficiency, reduces manual labor intensity and intervention in the preparation process, enhances solution concentration accuracy and rapid solute dissolution, achieving a homogeneous solution that meets production needs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the mechanical mechanism of the device of this utility model;

[0021] Figure 3 This is a schematic diagram of the power and logic control mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the workflow of this utility model.

[0023] Legend:

[0024] 1. Mechanical structure of the device; 2. Power and logic control mechanism; 101. Automatic feeding device; 102. Liquid level detection device; 103. Automatic stirring device; 104. Concentration detection device; 105. Electric water supply valve; 201. Power control system; 202. PLC logic control system. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 One embodiment provided by this utility model:

[0027] An automatic control device for solution preparation concentration includes a mechanical mechanism 1 and a power and logic control mechanism 2, which are connected by an electrical circuit.

[0028] The mechanical mechanism 1 of the device includes an automatic stirring device 103. An automatic feeding device 101 is fixedly connected to one side of the automatic stirring device 103. The automatic feeding device 101 adopts a screw conveyor structure. A liquid level detection device 102 is fixedly installed on one side of the automatic stirring device 103. The liquid level detection device 102 is composed of a liquid level gauge. A concentration detection device 104 is fixedly installed on the other side of the automatic stirring device 103. The concentration detection device 104 is composed of a concentration gauge. A water replenishment electric valve 105 is fixedly connected to one side of the upper end of the automatic stirring device 103. The automatic stirring device 103 includes a stirring tank. A motor is connected to the upper end of the stirring tank. A stirring blade is connected to the output end of the motor.

[0029] Specifically, the automatic feeding device 101 can automatically feed the solute into the mixing tank. The feeding device adopts a spiral conveyor structure and accurately controls the quality of the solute being fed according to the control command, reducing labor intensity and accurately controlling the material usage, thus improving feeding efficiency. The automatic stirring device 103 consists of a stirring tank, stirring blades, and a motor, and is used to stir the solution to accelerate the dissolution of solid solutes. It can greatly accelerate the dissolution rate of solid solutes in the solvent. The stirring tank is used for preparing and storing solutions. The automatic feeding device 101 adds a quantitative amount of solute to the stirring tank according to the calculation results of the PLC logic control system. The liquid level detection device 102 is used to measure the change in the solution volume in the stirring tank in real time, and the concentration detection device 104 monitors the change in the concentration of the solution in real time.

[0030] The power and logic control mechanism 2 includes a power control system 201 and a PLC logic control system 202. The power control system 201 and the PLC logic control system 202 are bidirectionally connected. The power control system 201 consists of a pre-configuration module, a dynamic dilution module and a closed-loop feedback system. The PLC logic control system 202 consists of a PLC controller.

[0031] Specifically, the power and logic control mechanism 2 performs automated batching logic control. The PLC logic control system 202 uses feedback values ​​from the liquid level (volume) and concentration sensors in the mixing tank to predict the amount of solute required to achieve the target concentration and volume through real-time regression calculation. Then, the power control system 201 sends feedback commands to the device mechanical mechanism 1 and each valve to precisely control the amount of solute and solvent added. At the same time, it controls the automatic stirring device 103 to drive the blades for efficient stirring. The PLC logic control system 202 controls the entire liquid preparation process in real time. The pre-mixing module can calculate the total amount of solute based on the target concentration and volume, and first prepare a high-concentration mother liquor. The dynamic dilution module controls the water replenishment amount until the target concentration is reached by monitoring the concentration and liquid level in real time. The closed-loop feedback system PLC dynamically adjusts the feed rate and water replenishment amount based on the data from the concentration meter and liquid level meter.

[0032] Working principle: When in use, the volume and concentration of the solution to be prepared are input into the PLC logic control system 202. The controller calculates the total amount of solute required to prepare the target solution based on the target volume and concentration values, as well as the concentration and volume of the remaining solution in the mixing tank. The PLC logic control system 202 issues a control command to add water to reach at least 60% of the target volume. At the same time, it calculates the target concentration value at the high concentration at that liquid level. The PLC logic control system 202 starts the automatic feeding device 101 to start feeding according to the predicted feeding amount. At the same time, the automatic stirring device 103 is started to accelerate dissolution. Meanwhile, the concentration value is monitored and the predicted feeding amount is corrected in real time. When the solution reaches the high concentration target value, feeding stops, water replenishment is started, and stirring is initiated. When the water replenishment reaches the target concentration, water replenishment stops and the solution preparation is completed.

[0033] Therefore, the solution preparation device implements a scheme that uses precise mathematical calculations in a dual-mode approach of "prediction + real-time correction" to predict the solution mass in advance, dissolve high-concentration solutions in advance, avoid concentration overshoot caused by dissolution delays in traditional methods, accelerate the solution preparation process, save time, more effectively control and improve the accuracy of solution concentration, avoid repeated preparation processes, improve solution preparation efficiency, and achieve full automation of solution concentration control. This scheme has significant advantages in production.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for automatic control of solution preparation concentration, comprising a device mechanical mechanism (1) and a power and logic control mechanism (2), characterized in that: The mechanical mechanism (1) and the power and logic control mechanism (2) of the device are connected by a circuit; The mechanical mechanism (1) of the device includes an automatic stirring device (103), and an automatic feeding device (101) is fixedly connected to one side of the automatic stirring device (103). The automatic feeding device (101) adopts a spiral conveying structure.

2. The automatic control device for solution preparation concentration according to claim 1, characterized in that: A liquid level detection device (102) is fixedly installed on one side of the outside of the automatic stirring device (103), and the liquid level detection device (102) is composed of a liquid level gauge.

3. The automatic control device for solution preparation concentration according to claim 1, characterized in that: A concentration detection device (104) is fixedly installed on the other side of the automatic stirring device (103), and the concentration detection device (104) is composed of a concentration meter.

4. The automatic control device for solution preparation concentration according to claim 1, characterized in that: An electric water supply valve (105) is fixedly connected to one side of the upper end of the automatic stirring device (103).

5. The automatic control device for solution preparation concentration according to claim 1, characterized in that: The automatic stirring device (103) includes a stirring tank, a motor is connected to the upper end of the stirring tank, and stirring blades are connected to the output end of the motor.

6. The automatic control device for solution preparation concentration according to claim 1, characterized in that: The power and logic control mechanism (2) includes a power control system (201) and a PLC logic control system (202), which are bidirectionally connected.

7. The automatic control device for solution preparation concentration according to claim 6, characterized in that: The power control system (201) consists of a pre-configuration module, a dynamic dilution module, and a closed-loop feedback system.

8. The automatic control device for solution preparation concentration according to claim 6, characterized in that: The PLC logic control system (202) is composed of a PLC controller.

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