Wireless control constant flow liquid inlet system

Abstract

The utility model discloses a wireless control constant-flow liquid inlet system, which belongs to the technical field of constant-flow liquid inlet control, and can accurately control the real-time liquid inlet amount of an easily crystallized solution through the coordination of a PID (Proportion Integration Differentiation) regulation control module, a servo clamping pipe type regulation device and an intelligent flow meter, thereby realizing the purpose of constant-flow liquid inlet. And the acidity of the manganese sulfate solution in the electrolytic bath is strictly controlled, so that manganese dioxide is easier to separate out. On the basis of ensuring convenient operation, the product quality is improved, and the constant-flow liquid inlet control system is simple in structure and high in automation degree. Besides, the constant-current liquid inlet control system can be applied to actual electrolysis and other similar production processes on a large scale, and unmanned management of the whole production workshop can be achieved through construction of the operation monitoring layer.

Description

Technical Field

[0001] The utility model relates to the technical field of constant flow liquid inlet control, and particularly relates to a wireless control constant flow liquid inlet system. Background Art

[0002] In the process of chemical production, to meet the technological requirements, it is usually necessary to strictly control the liquid inlet flow rate to keep it within a certain flow velocity range. In some specific environments, due to reasons such as crystallization, corrosion, and magnetic fields, wired transmission cannot solve problems such as corrosion, crystallization, and anti-interference.

[0003] Under the existing technical conditions, usually a metering pump or an artificial repeated pinch-type regulating device is used in the liquid supply pipeline to stabilize the flow rate. For the former, the flow rate adjustment of the pump is achieved by rotating the adjustment handwheel, driving the adjustment screw to rotate, thereby changing the distance between the bow-shaped connecting rods and changing the moving stroke of the plunger (piston) in the pump cavity to determine the flow rate. The scale of the adjustment handwheel determines the plunger stroke, with an accuracy of 95%, which is relatively low and not suitable for small-flow liquid inlets. Using an artificial pinch-type regulating device in the liquid supply pipeline to stabilize the flow rate requires judging the liquid volume according to experience, regularly detecting the acidity of the solution, and continuously adjusting the liquid inlet volume according to the detection results. This method is complex to operate and has a large amount of human interference.

[0004] Therefore, the utility model proposes a wireless control constant flow liquid inlet system. Content of the Utility Model

[0005] The purpose of the utility model is to provide a wireless control constant flow liquid inlet system to solve the problem of low adjustment accuracy of PID constant flow liquid supply regulation by ordinary metering pumps in the prior art; the pinch-type regulating mechanism adopted by this system belongs to a non-contact regulating mechanism, which only uses an external push rod structure to adjust the opening area of the high-elasticity hose, belonging to a precise area type control technology. At the same time, due to the repeated deformation of the pinch tube, the inner wall crystallization can be broken and washed away, effectively solving the problem of jamming caused by inner wall crystallization of ordinary pinch-type regulating devices.

[0006] The technical problem to be solved by the utility model can be realized through the following technical solutions:

[0007] A wireless control constant flow liquid inlet system includes a liquid inlet pipeline, and both ends of the liquid inlet pipeline are respectively connected to a first liquid storage tank and a second liquid storage tank; the liquid inlet pipeline is used to enable the liquid in the first liquid storage tank to flow into the second liquid storage tank;

[0008] A servo pinch-type regulating device and an intelligent flowmeter are sequentially arranged on the liquid inlet pipeline;

[0009] It further includes a PID adjustment control module, and the PID adjustment control module includes a PID controller and a wireless receiving and feedback unit;

[0010] The intelligent flowmeter is used to obtain the real-time flow rate and generate a real-time flow rate signal;

[0011] The intelligent flowmeter is wirelessly connected to the wireless receiving and feedback unit; the intelligent flowmeter sends the obtained real-time flow rate signal to the wireless receiving and feedback unit and then feeds it back to the PID controller;

[0012] The PID controller is wirelessly connected to the servo pinch-type regulating device.

[0013] Among them, the liquid inlet pipeline is a spring hose, further a high-elasticity PFA hose, and the servo pinch-type regulating device is a millisecond-level servo pinch-type regulating device.

[0014] Preferably, the liquid in the first liquid storage tank is a manganese sulfate solution, and the liquid in the second liquid storage tank is a manganese sulfate solution containing dilute sulfuric acid after electrolysis;

[0015] The intelligent flowmeter is used to obtain the real-time flow rate of the manganese sulfate solution and generate a real-time flow rate signal; the real-time flow rate signal therein is a 4-20 mA current signal.

[0016] Preferably, the PID controller is used to send a deviation signal to control the servo pinch-type regulating device, and the servo pinch-type regulating device adjusts the opening degree of the regulating device body according to the deviation signal;

[0017] A calibrated flow rate signal is set inside the PID controller;

[0018] The PID controller performs a comparison operation based on the set calibrated flow rate signal and the real-time flow rate signal, and obtains a deviation signal after the operation, and transmits the deviation signal to the servo pinch-type regulating device.

[0019] Preferably, the calibrated flow rate signal is set based on the experimental results before production.

[0020] Preferably, the wireless connections are all implemented based on the LORA wireless transmission technology.

[0021] The beneficial effects of the present utility model:

[0022] In this application, the wireless controlled constant-flow liquid inlet system can precisely control the real-time liquid inlet volume of acidic liquid through the coordinated operation of the PID regulation control module, the servo pinch-type regulation device, and the intelligent flowmeter, achieving the purpose of constant-flow liquid inlet, strictly controlling the acidity of the manganese sulfate solution in the electrolytic cell, and thus making it easier to precipitate manganese dioxide. On the basis of ensuring convenient operation, the product quality is improved. The constant-flow liquid inlet control system has a simple structure and a high degree of automation. In addition, the constant-flow liquid inlet control system of this application can be widely applied to actual electrolysis and other similar production processes. Through the construction of the operation monitoring layer, unmanned management of the entire production workshop can be achieved. When facing a complex production environment, such as crystallization, the pipeline can be flushed and cleaned regularly through a program. For different solution types, different pipelines, flowmeters, and servo control devices can be selected to avoid problems such as pipeline and valve corrosion, blockage, or large measurement deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following further describes the present utility model with reference to the drawings.

[0024] Figure 1 It is a schematic structural diagram of the wireless controlled constant-flow liquid inlet system of the present utility model.

[0025] In the figure: 1. First liquid storage tank; 2. Second liquid storage tank; 3. Liquid inlet pipeline; 4. Intelligent flowmeter; 5. Servo pinch-type regulation device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, some well-known technical features are not described to avoid confusion with the present utility model.

[0027] To thoroughly understand the present utility model, detailed steps and structures will be presented in the following description to explain the technical solution of the present utility model. The preferred embodiments of the present utility model are described in detail below. However, in addition to these detailed descriptions, the present utility model can also have other embodiments.

[0028] As Figure 1 shown, a wireless controlled constant-flow liquid inlet system includes a liquid inlet pipeline 3; both ends of the liquid inlet pipeline 3 are respectively connected to a first liquid storage tank 1 and a second liquid storage tank 2; the liquid inlet pipeline 3 is used to enable the liquid in the first liquid storage tank 1 to flow into the second liquid storage tank 2;

[0029] In some specific embodiments, the liquid inlet pipeline 3 is a high-elasticity PFA hose, and the liquid therein is a manganese sulfate solution;

[0030] The liquid inlet pipeline 3 is used to enable the manganese sulfate solution to flow into the electrolytic cell. The electrolytic cell contains the manganese sulfate solution. After electrolysis of the manganese sulfate solution, manganese dioxide is obtained, thus completing the preparation of manganese dioxide, and dilute sulfuric acid is generated at the same time.

[0031] That is, the first liquid storage tank 1 contains the manganese sulfate solution, and the second liquid storage tank 2 is the electrolytic cell.

[0032] Among them, a servo pinch tube type regulating device 5 and an intelligent flowmeter 4 are sequentially arranged on the liquid inlet pipeline 3.

[0033] It should be noted that the servo pinch tube type regulating device 5 is a millisecond-level servo pinch tube type regulating device; that is to say, the accuracy of the servo pinch tube type regulating device 5 is millimeter-level.

[0034] In the specific electrolysis process, the manganese sulfate solution flows by gravity through the spring hose into the servo pinch tube type regulating device 5, and then flows by gravity into the intelligent flowmeter 4 and then into the interior of the electrolytic cell.

[0035] It should be noted that the wireless control constant current liquid inlet system of the present application further includes a PID regulation control module, and the PID regulation control module includes a PID controller and a wireless receiving and feedback unit.

[0036] The intelligent flowmeter 4 is used to obtain the real-time flow rate of the manganese sulfate solution and generate a real-time flow rate signal; the real-time flow rate signal is generally a current signal of 4-20 mA.

[0037] The intelligent flowmeter 4 is wirelessly connected to the wireless receiving and feedback unit; the intelligent flowmeter 4 sends the obtained real-time flow rate signal to the wireless receiving and feedback unit and then feeds it back to the PID controller.

[0038] All wireless connections in the present application are realized based on the LORA wireless transmission technology.

[0039] It should be noted that the PID controller is wirelessly connected to the servo pinch tube type regulating device 5. The PID controller is used to send a deviation signal to control the servo pinch tube type regulating device 5, and the servo pinch tube type regulating device 5 adjusts the opening degree of the pinch tube type regulating device body according to the deviation signal; and a calibrated flow rate signal is set inside the PID controller.

[0040] The PID controller performs a comparison operation based on the set calibrated flow rate signal and the real-time flow rate signal, and obtains a deviation signal after the operation, and transmits the deviation signal to the servo pinch tube type regulating device 5.

[0041] In a specific embodiment, the calibrated flow signal is set based on the experimental results before production, and the experimental results therein are the instantaneous flow values corresponding to the acidity requirements of the electrolyte inside the electrolytic cell that meet the process requirements.

[0042] The PID controller is set with an allowable error, generally manifested as within ±0.2 L per minute.

[0043] In the present application, the wireless control constant-current liquid inlet system can accurately control the real-time liquid inlet volume of the acidic liquid through the coordinated operation of the PID adjustment control module, the servo pinch-tube adjustment device 5, and the intelligent flowmeter 4, achieving the purpose of constant-current liquid inlet, strictly controlling the acidity of the manganese sulfate solution in the electrolytic cell, and thus making it easier to precipitate manganese dioxide. On the basis of ensuring convenient operation, the product quality is improved. The constant-current liquid inlet control system of the present invention has a simple structure and a high degree of automation. In addition, the constant-current liquid inlet control system of the present application can be widely applied to actual electrolysis and other similar production processes. Through the construction of the operation monitoring layer, unmanned management of the entire production workshop can be realized. When facing a complex production environment, such as crystallization, the pipeline can be flushed and cleaned regularly through the program. For different solution types, different pipelines, flowmeters, and servo control devices can be selected to avoid problems such as corrosion, blockage of pipelines and valves, or large measurement deviations.

[0044] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and the equipment and structures not described in detail therein should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the protection of the technical solution of the present invention.

Claims

1. A wireless controlled constant flow liquid inlet system, comprising a liquid inlet pipeline (3), wherein two ends of the liquid inlet pipeline (3) are respectively connected to a first liquid storage tank (1) and a second liquid storage tank (2); the liquid inlet pipeline (3) is used to enable the liquid in the first liquid storage tank (1) to flow into the second liquid storage tank (2); It is characterized in that The liquid inlet pipeline (3) is provided with a servo clamp-type regulating device (5) and an intelligent flow meter (4) in sequence; It also includes a PID adjustment control module, which includes a PID controller and a wireless receiving feedback unit; The intelligent flow meter (4) is used to obtain real-time flow and generate a real-time flow signal; The intelligent flow meter (4) is wirelessly connected to the wireless receiving feedback unit; the intelligent flow meter (4) sends the acquired real-time flow signal to the wireless receiving feedback unit and then feeds back to the PID controller; The PID controller is wirelessly connected to the servo clamp-tube regulating device (5).

2. A wireless controlled constant flow liquid inlet system according to claim 1, characterized in that: The liquid inlet pipeline (3) is a spring hose, and the servo clamp-tube regulating device (5) is a millisecond-level servo clamp-tube regulating device.

3. A wireless controlled constant flow liquid inlet system according to claim 1, characterized in that: The liquid in the first liquid holding tank (1) is a manganese sulfate solution, and the liquid in the second liquid holding tank (2) is a manganese sulfate solution containing dilute sulfuric acid after electrolysis; The intelligent flow meter (4) is used to obtain the real-time flow of the manganese sulfate solution and generate a real-time flow signal; wherein the real-time flow signal is a current signal of 4 to 20 mA.

4. A wireless controlled constant flow liquid inlet system according to claim 3, characterized in that: The PID controller is used to send a deviation signal to control the servo clamp-tube regulating device (5), and the servo clamp-tube regulating device (5) controls the opening of the clamp-tube regulating device body according to the deviation signal; The PID controller is internally provided with a calibrated flow signal; The PID controller performs a comparison operation based on a set calibration flow signal and a real-time flow signal, obtains a deviation signal after the operation, and transmits the deviation signal to a servo clamp-type regulating device (5).

5. A wireless controlled constant flow liquid inlet system according to claim 4, characterized in that: The calibration flow signal is set based on pre-production experimental results.

6. A wireless controlled constant flow liquid inlet system according to any one of claims 1 to 5, characterized in that: Wireless connections are all based on LORA wireless transmission technology.

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