Device for measuring pH value of high-temperature corrosive solution

Abstract

The utility model provides a device for measuring the pH value of a high-temperature corrosive solution, and relates to the field of devices for measuring the pH value of the solution, the device comprises a solution storage tank and a telescopic measuring mechanism, the telescopic measuring mechanism is arranged on the upper side of the solution storage tank, and by arranging the telescopic measuring mechanism, the pH value of the high-temperature corrosive solution can be measured through the steps of measuring, washing and the like during use. According to the device, the actual pH value of the solution can be measured on line, the measurement accuracy is improved, the time of each step can be set, the actual measurement condition can be reflected, after one measurement cycle, the washing water pipeline can be used for washing the pH measurement electrode, the glass film of the pH electrode can be well protected until the measurement of the next cycle, and the measurement accuracy is improved. Therefore, the glass electrode of the pH meter is prevented from being soaked in a high-temperature corrosive solution for a long time, the accuracy of pH measurement is improved, the service life of the electrode is prolonged, the solution is thoroughly isolated from a human body in use, and the safety of operators is protected.

Description

Technical Field

[0001] The utility model relates to the field of devices for measuring the pH value of a solution, in particular to a device for measuring the pH value of a high-temperature corrosion solution. Background Art

[0002] The pH value is commonly used to indicate the acidity or alkalinity of a solution. Its application range is wide, and it is used in almost all production processes involving water, from industrial water use to final waste treatment, and includes a wide range of fields such as pulp and paper, metal processing, chemicals, petroleum, power plants, pharmaceuticals, and food processing.

[0003] A pH meter is an instrument for measuring the pH value of a solution. It measures the pH value of a solution through a pH-selective electrode (such as a glass electrode). The pH value can be accurate to two decimal places. In fertilizer production, the use of a pH meter can better control chemical reactions, thereby improving productivity, product quality, and ensuring safe production. Generally, pH electrodes are usually installed directly on pipelines or immersed in the solution being measured for a long time. This may cause the glass membrane of the electrode to be washed, clogged, or cracked, resulting in measurement abnormalities and affecting product quality. Production may even be interrupted when the electrode is replaced, and then some isolation and replacement measures may be taken, which is not conducive to the economic operation of the device production.

[0004] Therefore, we provide a device for measuring the pH value of high-temperature corrosion solution to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a device for measuring the pH value of a high-temperature corrosive solution, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for measuring the pH value of a high-temperature corrosive solution, comprising a solution storage tank, wherein a telescopic measuring mechanism is provided on the upper side of the solution storage tank;

[0007] The telescopic measuring mechanism includes a canned stirring assembly arranged on the upper side of the solution storage tank, an air source output assembly is provided on one side of the canned stirring assembly, a pipe on one side of the air source output assembly is connected to a control assembly, a pipe on one side of the control assembly is connected to a cylinder assembly, and a pH value measuring assembly is slidably connected to the inside of the cylinder assembly.

[0008] Preferably, the canned stirring assembly includes a fixed stirring port on the upper side of the solution storage tank, a stirring motor is provided on the upper side of the fixed stirring port, and a stirring fan is plugged into the lower side of the stirring motor.

[0009] Preferably, the gas source output component includes an air outlet device on one side of the stirring motor, a pipe on one side of the air outlet device is connected to an air source pipeline, and an inner pipe of the air source pipeline is connected to a filter pressure reducing valve.

[0010] Preferably, the control component includes a solenoid valve connected to a pipe on one side of the gas source pipeline, a pipe on one side of the solenoid valve is connected to a dual-control gas injection valve, both output ends of the dual-control gas injection valve are connected to gas injection pipes, and a throttling speed regulating valve is provided on the gas injection pipe.

[0011] Preferably, the cylinder assembly includes two throttling speed regulating valves respectively connected to the upper and lower parts of the cylinder by pipelines, and the lower side of the cylinder is fixedly connected to a lower protective shell.

[0012] Preferably, the pH value measuring assembly includes a fixed block fixedly connected to the bottom of the cylinder piston rod, and the upper and lower ends of one side of the fixed block are fixedly connected to the pH electrode mounting bracket.

[0013] Preferably, a side pipe of the lower protective shell is connected to a flushing water pipeline.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By setting up the telescopic measuring mechanism, when in use, the actual pH value of the solution can be measured online through the steps of measurement and flushing, thereby improving the measurement accuracy. The device can also set the time for each step, and strive to reflect the actual measurement conditions. After a measurement cycle, the pH measuring electrode can be flushed with the flushing water pipeline, which can well protect the glass membrane of the pH electrode until the next cycle measurement, thereby avoiding the glass electrode of the pH meter from being immersed in high-temperature, corrosive solutions for a long time, improving the accuracy of pH measurement, extending the service life of the electrode, and completely isolating the solution from contact with the human body during use, protecting the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the overall pH measuring device of the present invention;

[0018] Figure 3 This is a schematic cross-sectional view of the overall pH value measuring device of the present invention;

[0019] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure at point A;

[0020] Numbers in the figure: 1. Solution storage tank; 2. Telescopic measuring mechanism; 21. Canned stirring assembly; 211. Fixed stirring port; 212. Stirring motor; 22. Air source output assembly; 221. Air outlet device; 222. Air source pipeline; 223. Filter pressure reducing valve; 23. Control assembly; 231. Solenoid valve; 232. Dual-control air injection valve; 233. Air injection pipeline; 234. Throttle speed regulating valve; 24. Cylinder assembly; 241. Cylinder; 242. Lower protective shell; 25. pH value measuring assembly; 251. Fixed block; 252. pH electrode mounting bracket; 26. Flushing water pipeline. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 As shown, the utility model provides a technical solution: a device for measuring the pH value of a high-temperature corrosive solution, comprising a solution storage tank 1, characterized in that a telescopic measuring mechanism 2 is provided on the upper side of the solution storage tank 1;

[0023] The telescopic measuring mechanism 2 includes a canned stirring assembly 21 arranged on the upper side of the solution storage tank 1, and an air source output assembly 22 is provided on one side of the canned stirring assembly 21. A pipe on one side of the air source output assembly 22 is connected to a control assembly 23, and a pipe on one side of the control assembly 23 is connected to a cylinder assembly 24. A pH value measuring assembly 25 is slidably connected to the inside of the cylinder assembly 24.

[0024] Furthermore, the canned stirring assembly 21 includes a fixed stirring port 211 on the upper side of the solution storage tank 1, a stirring motor 212 is provided on the upper side of the fixed stirring port 211, and a stirring fan is plugged under the stirring motor 212 to facilitate stirring the solution to be tested.

[0025] Furthermore, the gas source output component 22 includes an air outlet device 221 on one side of the stirring motor 212 , a pipe on one side of the air outlet device 221 is connected to an air source pipeline 222 , and an inner pipe of the air source pipeline 222 is connected to a filter pressure reducing valve 223 .

[0026] Furthermore, the control component 23 includes a solenoid valve 231 connected to a pipe on one side of the gas source pipeline 222, and a double-control gas injection valve 232 is connected to a pipe on one side of the solenoid valve 231. Both output ends of the double-control gas injection valve 232 are connected to a gas injection pipeline 233, and a throttling speed regulating valve 234 is provided on the gas injection pipeline 233. The solenoid valve 231 is a double-control two-position five-way type, and a manual switching knob is provided on the valve body. The solenoid valve 231 can be switched in the event of an electrical failure or an on-site emergency to connect or disconnect the gas circuit of the solenoid valve 231.

[0027] Furthermore, the cylinder assembly 24 includes two throttling control valves 234 respectively connected to the upper and lower parts of the cylinder 241 by pipes. The lower side of the cylinder 241 is fixedly connected to a lower protective shell 242. The cylinder assembly 24 controls the dual-control air injection valve 232 through the solenoid valve 231 to inject air into the upper or lower part of the cylinder 241, so that the driving piston rod slides up and down inside the cylinder 241 and extends and retracts.

[0028] Furthermore, the pH value measuring assembly 25 includes a fixed block 251 fixedly connected to the bottom of the piston rod of the cylinder 241. The upper and lower ends of one side of the fixed block 251 are fixedly connected to the pH electrode mounting bracket 252. During the extension and retraction of the cylinder assembly 24, the lower electrode mounting bracket 252 can be extended into the solution to be tested inside the solution storage tank 1, and the pH is detected by the pH electrode mounted inside the pH electrode mounting bracket 252. When the detection is completed, the pH electrode can be moved out of the solution again through the control assembly 23 to protect the pH electrode.

[0029] Furthermore, a flushing water pipeline 26 is connected to a pipe on one side of the lower protective shell 242. The pH electrode is flushed through the flushing water pipeline 26, which can well protect the glass membrane of the pH electrode.

[0030] Working principle: First, a device for measuring the pH value of a high-temperature corrosive solution is installed at the designated location. When in use, the solenoid valve 231 is a double-control two-position five-way type, and the valve body is provided with a manual switching knob. The solenoid valve 231 can be switched in the event of an electrical failure or on-site emergency, so that the air circuit of the solenoid valve 231 is connected or disconnected, driving the piston rod in the cylinder 241 to move. The cylinder assembly 24 controls the double-control air injection valve 232 through the solenoid valve 231 to inject air into the cylinder 241, so that the piston rod inside the driving cylinder 241 slides up and down and retracts. During the retraction process, the pH is detected by the pH electrode clamped on the inner side of the pH electrode mounting bracket 252. After the detection is completed, the pH electrode is flushed through the flushing water pipe 26, which can well protect the glass membrane of the pH electrode. In this way, the use process of a device for measuring the pH value of a high-temperature corrosive solution is completed.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the pH value of a high-temperature corrosive solution, comprising a solution storage tank (1), characterized in that: A telescopic measuring mechanism (2) is provided on the upper side of the solution storage tank (1); The telescopic measuring mechanism (2) comprises a canned stirring assembly (21) arranged on the upper side of the solution storage tank (1); a gas source output assembly (22) is provided on one side of the canned stirring assembly (21); a control assembly (23) is connected to a pipe on one side of the gas source output assembly (22); a cylinder assembly (24) is connected to a pipe on one side of the control assembly (23); and a pH value measuring assembly (25) is slidably connected to the inner side of the cylinder assembly (24).

2. The device for measuring pH value of high temperature corrosion solution according to claim 1, characterized in that: The canned stirring assembly (21) comprises a fixed stirring port (211) opened on the upper side of the solution storage tank (1), a stirring motor (212) is provided on the upper side of the fixed stirring port (211), and a stirring fan is plugged into the lower side of the stirring motor (212).

3. The device for measuring pH value of high temperature corrosion solution according to claim 2, characterized in that: The gas source output assembly (22) comprises a gas outlet device (221) on one side of the stirring motor (212), a pipeline on one side of the gas outlet device (221) is connected to a gas source pipeline (222), and a filter pressure reducing valve (223) is connected to an inner pipeline of the gas source pipeline (222).

4. The device for measuring pH value of high temperature corrosion solution according to claim 3, characterized in that: The control component (23) comprises a solenoid valve (231) connected to a pipeline on one side of the gas source pipeline (222); a pipeline on one side of the solenoid valve (231) is connected to a dual-control gas injection valve (232); both output ends of the dual-control gas injection valve (232) are connected to a gas injection pipeline (233); and a throttling speed regulating valve (234) is provided on the gas injection pipeline (233).

5. The device for measuring pH value of high temperature corrosion solution according to claim 4, characterized in that: The cylinder assembly (24) includes two throttling speed regulating valves (234) respectively connected to the upper and lower parts of the cylinder (241) through pipelines. The lower side of the cylinder (241) is fixedly connected to a lower protective shell (242).

6. The device for measuring pH value of high temperature corrosion solution according to claim 5, characterized in that: The pH value measuring assembly (25) comprises a fixed block (251) fixedly connected to the bottom of the piston rod of the cylinder (241), and the upper and lower ends of one side of the fixed block (251) are fixedly connected to the pH electrode mounting bracket (252).

7. The device for measuring pH value of high temperature corrosion solution according to claim 5, characterized in that: A flushing water pipeline (26) is connected to a pipe on one side of the lower protective shell (242).

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