pH detection system

Abstract

The utility model belongs to detection device technical field, concretely relates to a pH value detection system, including the reaction kettle, the reaction kettle middle part is connected with the buffer tank, is provided with the flow pump between the reaction kettle and buffer tank, is provided with the protective liquid entrance, pH probe and thermometer at the buffer tank top, the reaction kettle middle part is linked with buffer tank lower part, buffer tank upper part is linked with the reaction kettle upper part, is provided with the clamping sleeve outside buffer tank, is connected with the steam spray tank at buffer tank lower part, is provided with the circulating air pump at steam spray tank side part, is provided with the cleaning fluid entrance in buffer tank middle part, pH probe and thermometer electric connection have the controller. The utility model carries out the real -time control of reaction process through the controller, can realize the timing cleaning and the programmed operation, need not manual intervention, the degree of automation is high, has reduced the working strength and the security risk of maintenance personnel greatly.

Description

Technical Field

[0001] This utility model belongs to the field of detection device technology, and specifically relates to a pH value detection system. Background Technology

[0002] pH value is one of the most important process parameters in industries such as chemical engineering, pharmaceuticals, and environmental protection. Industrial online pH meters are widely used in reactors, wastewater treatment, food production, and other applications to monitor the acidity or alkalinity of media in real time.

[0003] In chemical production processes, some reactions require the addition of highly corrosive substances, making the media inside the reactor corrosive and accompanied by an irritating odor. The reaction temperature is high, and there is also a certain pressure. During the material reaction and heat preservation process, it is necessary to measure the pH value multiple times and adjust the process parameters in real time. If the pH is measured manually, it is not only dangerous, but also can damage the reaction system after changing the reaction temperature. This makes the measurement difficult and is also very labor-intensive.

[0004] However, the current pH detection process cannot fully meet the above requirements. The pH measurement method needs to be modified to achieve stable and accurate pH measurement. At the same time, it is also necessary to further realize the linkage control between the reaction vessel and the pH detection process and to automate the detection process. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a pH value detection system that can monitor the pH changes in the buffer tank in real time, so as to facilitate timely adjustment of the detection system.

[0006] The technical solution adopted by this utility model to solve its technical problem is: The pH detection system of this utility model includes a reaction vessel, a buffer tank connected to the middle of the reaction vessel, a flow pump installed between the reaction vessel and the buffer tank, a protective liquid inlet, a pH probe and a thermometer installed at the top of the buffer tank, the middle of the reaction vessel connected to the lower part of the buffer tank, the upper part of the buffer tank connected to the upper part of the reaction vessel, a jacket installed on the outside of the buffer tank, a steam spray tank connected to the lower part of the buffer tank, a circulating air pump installed on the side of the steam spray tank, a cleaning liquid inlet installed in the middle of the buffer tank, and a controller electrically connected to the pH probe and the thermometer.

[0007] A damper is installed between the flow pump and the buffer tank.

[0008] The damper is hollow inside and has a buffer sleeve on the outside.

[0009] The jacket has a hot water inlet at the top and a regulating valve at the inlet. The regulating valve is electrically connected to the controller. The jacket has a hot water outlet at the bottom.

[0010] The buffer tank is equipped with a waste liquid outlet at the bottom, and a control valve is installed on the waste liquid outlet. The control valve is electrically connected to the controller.

[0011] Control valve two and control valve three are respectively installed between the reaction vessel and the buffer tank, and control valve two and control valve three are electrically connected to the controller.

[0012] A control valve four is installed at the inlet of the cleaning fluid, and the control valve four is electrically connected to the controller.

[0013] The upper part of the steam spray tank is connected to the circulating air pump, and the bottom of the steam spray tank is also connected to the circulating air pump.

[0014] The steam spray tank is equipped with a steam inlet at the top.

[0015] The bottom plane of the pH probe is located in the middle of the buffer tank.

[0016] The beneficial effects of this utility model are: This invention features a jacket on the outside of a buffer tank, allowing for the introduction of a heat exchange medium and precise temperature control. It adapts to various working conditions and has wide applicability. When measuring the pH value inside a reaction vessel, the detection system forms a closed loop with the vessel, enabling continuous circulation of the reaction liquid. Multiple measurements further improve the accuracy of pH detection. This invention, used in conjunction with a reaction vessel, does not structurally damage the vessel, resulting in a more stable and accurate detection process. It is suitable for various reaction vessels, enabling real-time pH detection. After detection, the pH probe can be effectively cleaned. For long-term shutdowns, a protective solution can be added to protect the pH probe. The entire pH measurement process is automated and controlled by a control system, allowing for seamless integration with the production process.

[0017] This invention uses a controller to control the reaction process in real time, enabling timed cleaning and programmed operation without manual intervention. It is highly automated and significantly reduces the workload and safety risks for maintenance personnel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; In the diagram: 1. Reactor; 2. Buffer tank; 3. Steam spray tank; 4. Circulating air pump; 5. Damper; 6. Flow pump; 7. Hot water inlet; 8. Hot water outlet; 9. Jacket; 10. Protective liquid inlet; 11. Cleaning liquid inlet; 12. pH probe; 13. Thermometer; 14. Waste liquid outlet; 15. Controller; 301. Steam inlet; 501. Buffer sleeve. Detailed Implementation

[0019] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0020] Example 1 like Figure 1 As shown, the pH detection system includes a reaction vessel 1, a buffer tank 2 connected to the middle of the reaction vessel 1, a flow pump 6 between the reaction vessel 1 and the buffer tank 2, a protective liquid inlet 10, a pH probe 12 and a thermometer 13 at the top of the buffer tank 2, the middle of the reaction vessel 1 connected to the lower part of the buffer tank 2, the upper part of the buffer tank 2 connected to the upper part of the reaction vessel 1, a jacket 9 on the outside of the buffer tank 2, a steam spray tank 3 connected to the lower part of the buffer tank 2, a circulating air pump 4 on the side of the steam spray tank 3, a cleaning liquid inlet 11 in the middle of the buffer tank 2, and a controller 15 electrically connected to the pH probe 12 and the thermometer 13.

[0021] A damper 5 is installed between the flow pump 6 and the buffer tank 2.

[0022] The damper 5 is hollow inside, and a buffer sleeve 501 is provided on the outside of the damper 5.

[0023] The jacket 9 is provided with a hot water inlet 7 at the upper part, and a regulating valve is provided at the hot water inlet 7. The regulating valve is electrically connected to the controller 15. The jacket 9 is provided with a hot water outlet 8 at the lower part.

[0024] The bottom of the buffer tank 2 is provided with a waste liquid outlet 14, and a control valve is provided on the waste liquid outlet 14. The control valve is electrically connected to the controller 15.

[0025] Control valve 2 and control valve 3 are respectively installed between reactor 1 and buffer tank 2, and control valve 2 and control valve 3 are electrically connected to controller 15.

[0026] A control valve four is installed at the cleaning fluid inlet 11, and the control valve four is electrically connected to the controller 15.

[0027] The upper part of the steam spray tank 3 is connected to the circulating air pump 4, and the bottom of the steam spray tank 3 is connected to the circulating air pump 4.

[0028] The top of the steam spray tank 3 is equipped with a steam inlet 301.

[0029] The bottom plane of pH probe 12 is located in the middle of buffer tank 2.

[0030] Working principle and process: When testing is required, the system sends a start signal for pH measurement via controller 15, opens the regulating valve of the hot water inlet 7, switches the heat exchanger, sets the temperature control target to 50℃, and waits until the temperature inside the buffer tank 2 exceeds 45℃. Then, it opens the cleaning liquid inlet 11 and the waste liquid outlet 14, flushes for 30 seconds, closes the cleaning liquid inlet 11 and the waste liquid outlet 14, and then starts the flow pump 6. It opens control valves 2 and 3 to pump the reaction liquid in the reactor 1 into the buffer tank 2 for circulation back to the reactor 1. The damper 5 ensures a stable delivery of the reaction liquid into the buffer tank 2, and the buffer sleeve 501 stabilizes the gas inside the damper 5. After 60 seconds of pressure and circulation, the controller 15 begins to read the real-time data transmitted back from the pH probe 12, reading once every 5 seconds, repeating 10 times. After reading is completed, the flow pump 6 is turned off and the regulating valve is closed, and this pH measurement ends. Then, steam containing bubbles is delivered to the buffer tank 2 through the steam spray tank 3 and the circulating air pump 4 for cleaning, and then cleaning liquid or pure water is delivered through the cleaning liquid inlet 11 for cleaning again. After cleaning, it is discharged through the waste liquid outlet 14. Then, protective liquid is delivered to the buffer tank 2 to protect the pH probe 12. Finally, the controller 15 is waited for the start signal of the next pH measurement.

Claims

1. A pH value detection system, comprising a reaction vessel (1), characterized in that, A buffer tank (2) is connected to the middle of the reactor (1). A flow pump (6) is installed between the reactor (1) and the buffer tank (2). A protective liquid inlet (10), a pH probe (12) and a thermometer (13) are installed on the top of the buffer tank (2). The middle of the reactor (1) is connected to the lower part of the buffer tank (2). The upper part of the buffer tank (2) is connected to the upper part of the reactor (1). A jacket (9) is installed on the outside of the buffer tank (2). A steam spray tank (3) is connected to the lower part of the buffer tank (2). A circulating air pump (4) is installed on the side of the steam spray tank (3). A cleaning liquid inlet (11) is installed in the middle of the buffer tank (2). The pH probe (12) and the thermometer (13) are electrically connected to a controller (15).

2. The pH detection system according to claim 1, characterized in that, A damper (5) is provided between the flow pump (6) and the buffer tank (2).

3. The pH detection system according to claim 2, characterized in that, The damper (5) is hollow inside and has a buffer sleeve (501) on the outside.

4. The pH detection system according to claim 1, characterized in that, A hot water inlet (7) is provided at the upper part of the jacket (9), and a regulating valve is provided at the hot water inlet (7). The regulating valve is electrically connected to the controller (15). A hot water outlet (8) is provided at the lower part of the jacket (9).

5. The pH detection system according to claim 1, characterized in that, The bottom of the buffer tank (2) is provided with a waste liquid outlet (14), and a control valve is provided on the waste liquid outlet (14). The control valve is electrically connected to the controller (15).

6. The pH detection system according to claim 1, characterized in that, Control valve 2 and control valve 3 are respectively installed between the reactor (1) and the buffer tank (2), and control valve 2 and control valve 3 are electrically connected to the controller (15).

7. The pH detection system according to claim 1, characterized in that, A control valve four is installed at the cleaning fluid inlet (11), and the control valve four is electrically connected to the controller (15).

8. The pH detection system according to claim 1, characterized in that, The upper part of the steam spray tank (3) is connected to the circulating air pump (4), and the bottom of the steam spray tank (3) is connected to the circulating air pump (4).

9. The pH detection system according to claim 1, characterized in that, The top of the steam spray tank (3) is provided with a steam inlet (301).

10. The pH detection system according to claim 1, characterized in that, The bottom plane of the pH probe (12) is located in the middle of the buffer tank (2).

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