Explosion-proof type reaction kettle on-line pH value analyzer

Abstract

The utility model discloses a flame-proof type reaction kettle on-line pH analyzer, which relates to the technical field of pH detection, and comprises an explosion-proof cabinet, a measuring storage tank and a diaphragm pump are fixedly connected in the explosion-proof cabinet, one side of the measuring storage tank is provided with an electrode interface penetrating to the outer side of the explosion-proof cabinet, the electrode interface is fixedly connected with a pH electrode, and the other side of the measuring storage tank is provided with a pressure sensor. A liquid inlet of the measuring storage tank is connected with a liquid outlet of the diaphragm pump; a liquid inlet of the diaphragm pump is connected with a liquid inlet pipe, a soaking liquid pipe and a flushing liquid pipe, a liquid outlet of the measuring storage tank is connected with a backflow pipe and a liquid discharging pipe, the backflow pipe is connected with a closed sampling valve in series, and the closed sampling valve is arranged on the outer side of the anti-explosion cabinet. And liquid valves are arranged on the liquid inlet pipe, the soaking liquid pipe, the flushing liquid pipe, the return pipe and the liquid discharge pipe. According to the on-line pH value analyzer for the flame-proof reaction kettle, the layout cost is low; the pH electrode is convenient to disassemble, and the explosion-proof effect is good; and automatic detection can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pH detection, specifically to an on-line acid-base degree analyzer for an explosion-proof reaction kettle. BACKGROUND

[0002] In the operation process of the reaction kettle, it is crucial to accurately grasp the state of the internal reaction and to monitor the pH value at each depth in real time. Currently, the external pH sensor needs to extract the original liquid in the reaction kettle for detection. This process not only requires multiple flushing of the sensor to eliminate the residual influence of the previous detection point, but sometimes also requires immersion in a specific soaking liquid to ensure accuracy and stability. Multiple liquid pumps are required to achieve this, increasing the complexity and maintenance cost of the system.

[0003] In addition, in terms of ensuring explosion-proof performance, although electrical components are placed in explosion-proof cabinets to reduce safety risks, the regular disassembly and calibration of pH electrodes have become a hidden danger to explosion-proof safety. Whenever the explosion-proof cabinet is opened for these operations, flammable and explosive substances in the environment may take the opportunity to invade the interior of the cabinet, resulting in a significant reduction in explosion-proof effect and thus a safety hazard.

[0004] Therefore, it is necessary to provide an on-line acid-base degree analyzer for an explosion-proof reaction kettle to solve the above problems. SUMMARY

[0005] (I) Technical problems solved

[0006] The utility model aims to provide an on-line acid-base degree analyzer for an explosion-proof reaction kettle to solve the problems raised in the background.

[0007] (II) Technical solutions

[0008] To achieve the above purpose, the utility model is implemented by the following technical solutions: an on-line acid-base degree analyzer for an explosion-proof reaction kettle, comprising an explosion-proof cabinet, a measuring tank and a diaphragm pump fixedly connected inside the explosion-proof cabinet, an electrode interface penetrating to the outside of the explosion-proof cabinet provided on one side of the measuring tank, a pH electrode fixedly connected on the electrode interface, and a liquid inlet of the measuring tank connected with a liquid outlet of the diaphragm pump.

[0009] A liquid inlet of the diaphragm pump is connected with a liquid inlet pipe, a soaking liquid pipe and a flushing liquid pipe, a liquid outlet of the measuring tank is connected with a backflow pipe and a liquid discharge pipe, a closed sampling valve is connected in series on the backflow pipe, the closed sampling valve is arranged outside the explosion-proof cabinet, and liquid valves are arranged on the liquid inlet pipe, the soaking liquid pipe, the flushing liquid pipe, the backflow pipe and the liquid discharge pipe.

[0010] Preferably, the explosion-proof cabinet is equipped with a sewage storage tank, a soaking solution storage tank, and a rinsing solution storage tank on its outer side. The sewage storage tank is connected to the measuring storage tank through a drain pipe, and the soaking solution storage tank and the rinsing solution storage tank are respectively connected to the diaphragm pump through soaking solution pipe and rinsing solution pipe.

[0011] Preferably, a sealing ring is fitted onto the outside of the electrode interface, and the electrode interface is sealed to the explosion-proof cabinet through the sealing ring.

[0012] Preferably, the inner side of the electrode interface is provided with an internal thread, the outer side of the pH electrode is provided with an external thread, and the pH electrode is threadedly connected to the electrode interface.

[0013] Preferably, the liquid valve is a solenoid valve, and the solenoid valve is located inside the explosion-proof cabinet.

[0014] Preferably, a touch screen is sealed and fixedly connected to one side of the explosion-proof cabinet, and the liquid valve, pH electrode, diaphragm pump and touch screen are all electrically connected to the controller.

[0015] Preferably, the bottom of the sewage storage tank is provided with a drain port, and the top of the soaking solution storage tank and the rinsing solution storage tank are both provided with inlets.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an online acid-base analyzer for explosion-proof reactors, which has the following beneficial effects:

[0018] 1. This explosion-proof reactor online pH analyzer can deliver raw solution, rinsing solution and soaking solution with a single diaphragm pump, reducing the number of pumps and lowering deployment costs.

[0019] 2. This explosion-proof reactor online pH analyzer has an electrode interface that extends to the outside of the explosion-proof cabinet on one side of the measuring tank, allowing the pH electrode to be disassembled without opening the explosion-proof cabinet. This facilitates the disassembly and calibration of the pH electrode without affecting the sealing effect of the explosion-proof cabinet.

[0020] 3. This explosion-proof reactor online pH analyzer can achieve automated online measurement by controlling the start and stop of multiple solenoid valves and diaphragm pumps at set time intervals through a controller. Attached Figure Description

[0021] Fig. 1 This is a flowchart illustrating the present invention.

[0022] Fig. 2 This is a three-dimensional schematic diagram of the structure of this utility model;

[0023] Fig. 3 This is a cross-sectional schematic diagram of the measuring tank of this utility model.

[0024] In the figure: 1, pH electrode; 2, measuring tank; 3, closed sampling valve; 4, sewage valve; 5, sewage tank; 6, soaking liquid tank; 7, flushing liquid tank; 8, flushing valve; 9, soaking valve; 10, diaphragm pump; 11, feeding valve; 12, discharging valve; 13, touch screen; 14, explosion-proof cabinet; 15, sealing sleeve; 16, sealing ring; 17, electrode interface. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0026] Please refer to Figs. 1-3 As shown in the figure, an explosion-proof type reaction kettle on-line pH value analyzer, including explosion-proof cabinet 14, explosion-proof cabinet 14 is fixedly connected with measuring tank 2 and diaphragm pump 10, one side of measuring tank 2 is equipped with electrode interface 17 that penetrates to the outside of explosion-proof cabinet 14, electrode interface 17 is fixedly connected with pH electrode 1, the liquid inlet of measuring tank 2 is connected with the liquid outlet of diaphragm pump 10;The liquid inlet of diaphragm pump 10 is connected with liquid inlet pipe, soaking liquid pipe and flushing liquid pipe, the liquid outlet of measuring tank 2 is connected with backflow pipe and liquid discharge pipe, backflow pipe is connected with closed sampling valve 3 in series, closed sampling valve 3 is arranged on the outside of explosion-proof cabinet 14, and liquid valve is arranged on liquid inlet pipe, soaking liquid pipe, flushing liquid pipe, backflow pipe and liquid discharge pipe.

[0027] When using, liquid inlet pipe and backflow pipe are connected with the liquid outlet and liquid inlet of the reaction kettle, sewage tank 5 is connected with measuring tank 2 through liquid discharge pipe, soaking liquid tank 6 and flushing liquid tank 7 are connected with diaphragm pump 10 through soaking liquid pipe and flushing liquid pipe respectively.

[0028] Flushing: before measuring, sewage valve 4, flushing valve 8 and diaphragm pump 10 are opened, and other liquid valves are closed, the probe of pH electrode 1 is flushed by flushing liquid, after flushing and emptying, sewage valve 4, flushing valve 8 and diaphragm pump 10 are closed.

[0029] Measuring: feeding valve 11, discharging valve 12 and diaphragm pump 10 are opened to start conveying measuring original liquid, when measuring original liquid fills measuring tank 2, the measuring data gradually stabilizes, that is, the pH value of the original liquid is measured.

[0030] Soaking: before soaking, the flushing step is repeated to flush, after flushing, soaking valve 9 and diaphragm pump 10 are opened, the soaking liquid is filled in measuring tank 2, and the probe of pH electrode 1 is completely immersed in the soaking liquid. The analyzer can realize the conveying of the original liquid, flushing liquid and soaking liquid through a diaphragm pump 10, so that the number of liquid pumps is reduced, and the layout cost is reduced.

[0031] In order to avoid the safety hidden danger caused by the liquid with corrosive, flammable and explosive and toxic, the closed sampling function can be realized by installing the closed sampling valve 3 on the reflux pipe, and the danger can be avoided when the manual sampling is carried out.

[0032] For the liquid, gas, powder and solid articles with flammable and explosive in the use environment, the safety operation of these equipments in these special environment can be ensured by arranging the diaphragm pump 10 in the inside of the explosion-proof cabinet 14, so as to improve the reliability of the equipment.

[0033] The flushing liquid needs to use the solution of the same solvent as in the reaction kettle. Avoiding the pollution of the original liquid caused by the residual flushing liquid.

[0034] In order to facilitate the disassembly and calibration of the pH electrode 1, the electrode interface 17 is provided on one side of the measuring tank 2 and penetrates to the outside of the explosion-proof cabinet 14, so that the disassembly of the pH electrode 1 can be completed without opening the explosion-proof cabinet 14. Specifically, the outside of the electrode interface 17 is sleeved with a sealing ring 16, and the electrode interface 17 is sealingly connected with the explosion-proof cabinet 14 through the sealing ring 16. The gap between the electrode interface 17 and the explosion-proof cabinet 14 is sealed by the sealing ring 16, which improves the sealing effect.

[0035] Specifically, the inside of the electrode interface 17 is provided with an internal thread, and the outside of the pH electrode 1 is provided with an external thread. The pH electrode 1 is threadedly connected with the electrode interface 17. The threaded connection is sealed by sleeving rubber gasket or applying sealant, so as to avoid liquid leakage. Preferably, in order to facilitate the connection of the pipeline located in the explosion-proof cabinet 14 with the external equipment and ensure the sealing of the explosion-proof cabinet 14, a plurality of sealing sleeves 15 are arranged on the explosion-proof cabinet 14 to fill the gap between the pipeline and the explosion-proof cabinet 14.

[0036] In order to realize automatic control, the liquid valve is an electromagnetic valve, which is located in the inside of the explosion-proof cabinet 14. One side of the explosion-proof cabinet 14 is sealingly and fixedly connected with a touch screen 13. The liquid valve, the pH electrode 1, the diaphragm pump 10 and the touch screen 13 are electrically connected with a controller. The electrical connection interfaces all adopt explosion-proof connectors.

[0037] The flushing time, the measuring time and the soaking time, and the pH measurement interval are set through the touch screen 13. The controller controls the start and stop of the plurality of electromagnetic valves and the diaphragm pump 10 according to the set time interval, so as to realize automatic online measurement.

[0038] In order to facilitate the emptying of the waste liquid in the sewage tank 5, the bottom end of the sewage tank 5 is provided with a liquid outlet. In order to facilitate the addition of the flushing liquid and the soaking liquid into the soaking liquid tank 6 and the flushing liquid tank 7, the top ends of the soaking liquid tank 6 and the flushing liquid tank 7 are provided with liquid inlets. Preferably, the sewage tank 5, the soaking liquid tank 6 and the flushing liquid tank 7 all adopt semi-transparent or transparent materials, so as to facilitate the observation of the liquid quantity in the tank.

[0039] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An on-line pH / ORP analyzer for an explosion-proof reaction kettle, comprising an explosion-proof cabinet (14), characterized in that: The explosion-proof cabinet (14) is fixedly connected with a measuring tank (2) and a diaphragm pump (10), one side of the measuring tank (2) is provided with an electrode interface (17) penetrating to the outside of the explosion-proof cabinet (14), the electrode interface (17) is fixedly connected with a pH electrode (1), and the liquid inlet of the measuring tank (2) is connected with the liquid outlet of the diaphragm pump (10). The liquid inlet of the diaphragm pump (10) is connected with a liquid inlet pipe, an immersion liquid pipe and a flushing liquid pipe, the liquid outlet of the measuring tank (2) is connected with a backflow pipe and a liquid discharge pipe, the backflow pipe is connected with a sealed sampling valve (3) in series, the sealed sampling valve (3) is arranged on the outside of the explosion-proof cabinet (14), and the liquid inlet pipe, the immersion liquid pipe, the flushing liquid pipe, the backflow pipe and the liquid discharge pipe are all provided with liquid valves.

2. The on-line pH / ORP analyzer for an explosion-proof reaction kettle according to claim 1, characterized in that: The outside of the explosion-proof cabinet (14) is provided with a sewage tank (5), an immersion liquid tank (6) and a flushing liquid tank (7), the sewage tank (5) is connected with the measuring tank (2) through the liquid discharge pipe, and the immersion liquid tank (6) and the flushing liquid tank (7) are connected with the diaphragm pump (10) through the immersion liquid pipe and the flushing liquid pipe respectively.

3. The on-line pH / ORP analyzer for an explosion-proof reaction kettle according to claim 1, characterized in that: The electrode interface (17) is sleeved with a sealing ring (16) on the outside, and the electrode interface (17) is sealingly connected with the explosion-proof cabinet (14) through the sealing ring (16).

4. The on-line pH / ORP analyzer for an explosion-proof reaction vessel according to claim 1, characterized in that: The inside of the electrode interface (17) is provided with an internal thread, the outside of the pH electrode (1) is provided with an external thread, and the pH electrode (1) is threadedly connected with the electrode interface (17).

5. The on-line pH / ORP analyzer for an explosion-proof reaction vessel according to claim 1, characterized in that: The liquid valve is an electromagnetic valve, and the electromagnetic valve is located on the inside of the explosion-proof cabinet (14).

6. The on-line pH / ORP analyzer for an explosion-proof reaction vessel according to claim 5, characterized in that: One side of the explosion-proof cabinet (14) is sealingly and fixedly connected with a touch screen (13), and the liquid valve, the pH electrode (1), the diaphragm pump (10) and the touch screen (13) are electrically connected with a controller.

7. The on-line pH / ORP analyzer for an explosion-proof reaction vessel according to claim 2, characterized in that: The bottom end of the sewage tank (5) is provided with a liquid discharge port, and the top end of the immersion liquid tank (6) and the flushing liquid tank (7) is provided with a liquid inlet.

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