CN112858425A - Acidity analyzer - Google Patents
Acidity analyzer Download PDFInfo
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- CN112858425A CN112858425A CN202110061113.2A CN202110061113A CN112858425A CN 112858425 A CN112858425 A CN 112858425A CN 202110061113 A CN202110061113 A CN 202110061113A CN 112858425 A CN112858425 A CN 112858425A
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- reaction tank
- control valve
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003513 alkali Substances 0.000 claims abstract description 19
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000002699 waste material Substances 0.000 claims abstract description 9
- -1 polypropylene Polymers 0.000 claims description 28
- 239000002585 base Substances 0.000 claims description 18
- 239000004698 Polyethylene Substances 0.000 claims description 15
- 229920000573 polyethylene Polymers 0.000 claims description 15
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 239000004793 Polystyrene Substances 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 229920002223 polystyrene Polymers 0.000 claims description 9
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 9
- 239000004800 polyvinyl chloride Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 229910052594 sapphire Inorganic materials 0.000 claims description 3
- 239000010980 sapphire Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000009616 inductively coupled plasma Methods 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000010669 acid-base reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/302—Electrodes, e.g. test electrodes; Half-cells pH sensitive, e.g. quinhydron, antimony or hydrogen electrodes
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
The invention discloses an acidity analyzer, which comprises a shell, a fixed support and a CPU mainboard, wherein the fixed support is arranged in the shell; the device also comprises an overflow pool, a reaction pool, a PH meter, an injection pump and a peristaltic pump which are arranged on the fixed bracket; six openings are arranged on the injection pump, and six control valves are correspondingly arranged at the openings; the six openings are respectively communicated with a waste liquid pipe, an air pipe, a pure water tank, an alkaline liquid tank, a reaction tank and a sample liquid tank; the overflow tank is communicated with the reaction tank through a first communicating pipe, and a control valve is arranged on the first communicating pipe; a PH electrode is arranged in the reaction tank and is electrically connected with a PH meter; the reaction tank is provided with a water outlet pipe and a second communicating pipe which are communicated with the inside of the reaction tank, the water outlet pipe is provided with a control valve, and one end of the second communicating pipe, which is far away from the reaction tank, is communicated with the peristaltic pump. The invention can reduce the labor intensity of the test and improve the efficiency; the raw material consumption and the production cost are reduced; the method makes up a big gap of the traditional chemical plant for automatically monitoring the acid and the alkali of the solution.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to an acidity analyzer.
Background
At present, there are many methods for measuring acid-base concentration at home and abroad, such as a refraction method, a conductivity method, a specific gravity method, an analytical spectrometry method, ICP (inductively coupled plasma) and the like, but a chemical mode of neutralization titration is generally adopted in domestic industry.
The measuring environment of acid and alkali has great influence on principle applicability, substances to be measured rarely exist independently in industrial acid and alkali liquor, metal and nonmetal impurities are dissolved in the substances, and the metal impurities can interfere the measuring process and even generate larger process deviation. E.g. Cu in an electrolyte2+、Ca2+、As3+Can be folded in halfLight, electric conductivity, specific gravity are interfered, and NO is3-、CL-Interference can occur in the analysis spectrum, and ICP, which is highly accurate and is free of elemental interference, is expensive.
Disclosure of Invention
The invention aims to solve the problems that: the acidity analyzer is provided, so that the labor intensity of the assay can be reduced, and the efficiency can be improved; the raw material consumption and the production cost are reduced; the method makes up a big gap of the traditional chemical plant for automatically monitoring the acid and the alkali of the solution.
The technical scheme provided by the invention for solving the problems is as follows: an acidity analyzer comprises a shell, a fixed bracket and a CPU mainboard, wherein the fixed bracket is arranged in the shell; the device also comprises an overflow pool, a reaction pool, a PH meter, an injection pump and a peristaltic pump which are arranged on the fixed bracket; six openings are formed in the injection pump, and six control valves are correspondingly arranged at the openings; the six openings are respectively communicated with a waste liquid pipe, an air pipe, a pure water tank, an acid-base liquid tank, a reaction tank and a sample liquid tank; the overflow tank is communicated with the reaction tank through a first communicating pipe, and a control valve is arranged on the first communicating pipe; a PH electrode is arranged in the reaction tank and is electrically connected with the PH meter; the reaction tank is provided with a water outlet pipe and a second communicating pipe which are communicated with the inside of the reaction tank, the water outlet pipe is provided with a control valve, and one end of the second communicating pipe, which is far away from the reaction tank, is communicated with the peristaltic pump.
Preferably, an overflow pipe is arranged on the overflow tank, and an overflow port is arranged at one end of the overflow pipe, which is far away from the overflow tank.
Preferably, all control, signal acquisition and signal transmission of the system are completed by a CPU mainboard.
Preferably, an alkali liquor or an acid liquor is stored in the acid-acid alkali liquor tank, wherein the alkali liquor is a sodium hydroxide standard liquor, and the acid liquor is a dilute sulfuric acid standard liquor.
Preferably, the reaction tank is cylindrical and conical, and is made of one of polypropylene, polyvinyl chloride, polyethylene and polystyrene.
Preferably, the overflow tank is cylindrical and conical, and is made of one of polypropylene, polyvinyl chloride, polyethylene and polystyrene.
Preferably, the waste liquid pipe, the first communicating pipe, the second communicating pipe, the air pipe and the water outlet pipe are round pipes and are made of one of polytetrafluoroethylene, polypropylene, polyvinyl chloride, polyethylene and polystyrene.
Preferably, the material of the injection pump is one of polyethylene, silica glass, sapphire and tetrafluoro.
Preferably, the control valve is a two-position two-way normally closed electromagnetic valve, and the valve body is made of one of brass, polyethylene, polytetrafluoroethylene and PTEF.
Preferably, whether the PH value in the reaction tank reaches the neutral judgment detection end point is collected through an accurate PH analyzer, the amount of liquid to be injected into the reaction tank is controlled through a 12000-step high-precision stepping motor, and the acid-base concentration of the sample liquid is calculated according to the amount of injected standard liquid when the detection end point is reached.
Compared with the prior art, the invention has the advantages that: the method is applied to monitoring the pH value of the industrial solution, and provides accurate data reference for the process; the labor intensity of the assay is reduced, and the efficiency is improved; the raw material consumption and the production cost are reduced; the method makes up a big gap of the traditional chemical plant for automatically monitoring the acid and the alkali of the solution.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a flow chart of the operation of the present invention;
FIG. 3 is a schematic diagram of a CPU circuit board of the present invention;
the attached drawings are marked as follows: 1. the device comprises a shell, 2, a control valve IV, 3, a PH meter, 4, an overflow tank, 5, an overflow pipe, 6, an overflow port, 7, a first communicating pipe, 8, a control valve VII, 9, a control valve V, 10, a control valve VI, 11, a peristaltic pump, 12, a second communicating pipe, 13, a reaction tank, 14, a PH electrode, 15, a control valve VI, 16, a water outlet pipe, 17, an injection pump, 18, a control valve I, 19, a control valve II, 20 and a control valve III.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings and examples, so that how to implement the embodiments of the present invention by using technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.
The technical problems solved by the invention, the technical solutions adopted by the invention and the technical effects achieved by the invention are clearer, and the technical solutions of the embodiments of the invention are described in further detail below, and it is obvious that the described embodiments are only a part of the embodiments of the invention, and the liquid volume value, the time second number, the control valve number, the action sequence and the like, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected", "drawn", "injected" and "secured" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, positional features shown in the drawings, such as a first feature "on" or "under" a second feature, may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not in direct contact, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
An acidity analyzer comprises a shell, a fixed support 1 and a CPU mainboard, wherein the fixed support is arranged in the shell; the method is characterized in that: the device also comprises an overflow pool 4, a reaction pool 13, a PH meter 3, an injection pump 17 and a peristaltic pump 11 which are arranged on the fixed bracket 1; six openings (here, the six openings are clockwise marked as openings 1-6 in the figure) are formed in the injection pump 17, and six control valves (namely, a control valve I, a control valve II, a control valve III, a control valve IV, a control valve V and a control valve VI) are correspondingly arranged at the openings; the six openings are respectively communicated with a waste liquid pipe, an air pipe, a pure water pool, an acid-base liquid pool, a reaction pool 13 and a sample liquid pool (namely, the opening one corresponds to the waste liquid pipe, the opening two corresponds to the air pipe, the opening three corresponds to the pure water pool, the opening four corresponds to the acid-base liquid pool, the opening five corresponds to the reaction pool 13 and the opening six corresponds to the sample liquid pool); the overflow tank 4 is communicated with the reaction tank 13 through a first communicating pipe 7, and a control valve is arranged on the first communicating pipe 7; a PH electrode 14 is arranged in the reaction tank 13, and the PH electrode 14 is electrically connected with the PH meter 3; the reaction tank 13 is provided with a water outlet pipe 16 and a second communicating pipe 12 which are communicated with the inside of the reaction tank 13, the water outlet pipe 16 is provided with a control valve, and one end of the second communicating pipe 12 far away from the reaction tank 13 is communicated with the peristaltic pump 11.
Furthermore, an overflow pipe 5 is arranged on the overflow tank 4, and an overflow port 6 is arranged at one end, far away from the overflow tank 4, of the overflow pipe 5.
Furthermore, all control, signal acquisition and signal transmission of the system are completed by the CPU mainboard.
Further, an alkali liquor or an acid liquor is stored in the acid-acid alkali liquor tank, wherein the alkali liquor is a sodium hydroxide standard liquor, and the acid liquor is a dilute sulfuric acid standard liquor.
Furthermore, the reaction tank is cylindrical and conical, and is made of one of polypropylene, polyvinyl chloride, polyethylene and polystyrene.
Furthermore, the overflow tank is cylindrical and conical, and is made of one of polypropylene, polyvinyl chloride, polyethylene and polystyrene.
Furthermore, the waste liquid pipe, the first communicating pipe, the second communicating pipe, the air pipe and the water outlet pipe are round pipes and are made of one of tetrafluoro, polypropylene, polyvinyl chloride, polyethylene and polystyrene.
Furthermore, the material of the injection pump is one of polyethylene, silica glass, sapphire and tetrafluoro.
Furthermore, the control valve is a two-position two-way normally closed electromagnetic valve, and the valve body is made of one of brass, polyethylene, polytetrafluoroethylene and PTEF.
Further, whether the PH value in the reaction tank reaches a neutral state or not is collected through an accurate PH analyzer, the detection end point is judged, the amount of liquid to be injected into the reaction tank is controlled through a 12000-step high-precision stepping motor, and when the detection end point is reached, the acid-base concentration of the sample liquid is calculated through the injected standard liquid amount.
Operation sequence of each device of acidity analyzer
Starting reset cleaning stage
1. Starting up and resetting, wherein all the electromagnetic valves close the normally closed electromagnetic valves;
2. after 2 seconds, the control valve 5 is opened, and water in the water pipe enters the overflow tank;
3. after 10 seconds, the control valve 7 is opened, the peristaltic pump is opened, the control valve 5 is closed, and after timing 70 seconds, the control valve 7 is closed;
4. turning to the injection pump No. 3, opening the control valve 3 to pump 20 ml of water, and closing the control valve 3;
5. turning to the injection pump No. 6, and opening a backwashing liquid pumping pipeline for draining 20 ml of water by the control valve 4;
6. the control valve 4 is closed;
7. turning to the injection pump No. 2, and pumping 10 milliliters of air;
8. the injection pump is rotated for No. 6, the control valve 4 is opened, and 10 ml of air is used for back flushing the liquid pumping pipe;
9. the control valve 4 is closed;
10. turning to the injection pump No. 3, opening the control valve 3 to pump 20 ml of water, and closing the control valve 3;
11. the injection pump 5 is rotated to back wash the liquid injection pipeline to the reaction tank for 30 seconds;
12. the control valve 6 is opened to discharge the cleaning wastewater;
13. after 70 seconds, the control valve 6 is closed;
14. peristaltic pump shut-off
15. After 2 seconds, repeating the steps 2 and 3;
16. opening the control valve 6 to clear the wastewater;
17. the peristaltic pump is closed;
fluid extraction phase
1. The control valve 5 is opened, after 10 seconds, the control valve 5 is closed, and the control valve 7 is opened;
2. after 70 seconds, the control valve 7 is closed;
3. turning to the injection pump No. 6, opening the control valve 4 to pump 15 ml of the measuring solution;
4. the control valve 4 is closed, and 12 milliliters of the measuring solution is discharged by turning to the injection pump No. 1;
5. 2 ml of the measuring solution is injected by turning an injection pump No. 5;
6. starting a peristaltic pump;
7. the control valve 5 is opened, after 5 seconds, the control valve 5 is closed, the injection pump No. 3 is turned on, the control valve 3 is opened to pump 20 milliliters of water, and the control valve 3 is closed;
8. turning to the injection pump No. 6, opening the injection water 20 ml cleaning liquid pumping pipeline by the control valve 4, and closing the control valve 4 after injection;
9. turning to the injection pump No. 2, and pumping 10 milliliters of air;
10. turning to the injection pump No. 6, opening the control valve 4, reversely blowing 10 ml of air to the liquid pumping pipe, and closing the control valve 4 after reverse blowing;
11. turning to an injection pump No. 4, opening the control valve 2 to pump 20 ml of alkali liquor, and closing the control valve 2;
measuring phase
1. Rotating the injection pump No. 5, and starting to inject alkali liquor at different speeds;
2. when the pH value is between 1 and 3, injecting 10 milliliters of the solution, and waiting for 1 minute;
3. 1 ml was injected every 1 minute when the pH was between 3 and 4;
4. when the pH value is more than 5, 0.1 ml is injected every 1 minute;
5. when the pH value is equal to 7, stopping the injection pump, waiting for 2 minutes until the pH value is stable, reading the position of the injection pump, obtaining the injection amount, and calculating the acidity;
6. the peristaltic pump is closed;
end of cleaning phase
1. Rotating the injection pump No. 1 to discharge the residual alkali liquor;
2. the control valve 5 is opened, and is closed after 10 seconds, the injection pump 3 is turned, and the control valve 3 is opened to pump 10 milliliters of water;
3. the control valve 3 is closed;
4. rotating the injection pump No. 5, and cleaning the injection pipeline with water;
5. opening the control valve 6, discharging waste liquid, and closing the control valve 6 after 70 seconds;
6. when the control valve 6 is closed, the control valve 5 is opened, the control valve 5 is closed 10 seconds after the control valve 5 is opened, the rear control valve 7 is opened, the peristaltic pump is opened, the control valve 7 is closed 70 seconds later, and the peristaltic pump is closed 90 seconds later;
7. when the peristaltic pump is closed, the control valve 6 is opened;
8. after 70 seconds, the control valve 6 is closed;
end up
The principle of the invention is as follows: according to the principle of strong acid and strong base neutralization reaction, equal parts of OH-ions consume equal parts of H + ions, a known amount of industrial liquid to be detected is taken into a reaction tank, strong alkali liquid is titrated by a precise injection pump after dilution, and when a chemical end point is detected by a precise PH meter, the acidity of the liquid to be detected can be calculated by the alkali liquid consumed by the injection pump.
H2SO4+2NAOH＝H2O+NA2SO4
1 : 2
In the solution, various reactions which are multiple or weak or quick may exist, which have influence on the essence of the solution, but the interference-free detection of acid-base reaction can be ensured based on the mechanism of preferential reaction of strong acid and strong base in chemistry.
The injection pump adopts 12000 steps 25ML stepping motor to control sampling and injecting sample, thereby ensuring the sampling precision and ensuring the accuracy of the measuring result.
The neutralization reaction has reaction top priority in solution, and also has one-to-one correspondence in the order of magnitude of the reaction substance, 1MOL H+Is provided with and onlyCan be mixed with 1MOL OH-Reaction, which in principle directly determines the high accuracy of the measurement.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.
Claims (10)
1. An acidity analyzer comprises a shell, a fixed support (1) and a CPU mainboard, wherein the fixed support is arranged in the shell; the method is characterized in that: the device also comprises an overflow pool (4), a reaction pool (13), a PH meter (3), an injection pump (17) and a peristaltic pump (11) which are arranged on the fixed bracket (1); six openings are formed in the injection pump (17), and six control valves are correspondingly arranged at the openings; the six openings are respectively communicated with a waste liquid pipe, an air pipe, a pure water tank, an acid-base liquid tank, a reaction tank (13) and a sample liquid tank; the overflow tank (4) is communicated with the reaction tank (13) through a first communicating pipe (7), and a control valve is arranged on the first communicating pipe (7); a PH electrode (14) is arranged in the reaction tank (13), and the PH electrode (14) is electrically connected with the PH meter (3); the reaction tank (13) is provided with a water outlet pipe (16) communicated with the inside of the reaction tank (13) and a second communicating pipe (12), the water outlet pipe (16) is provided with a control valve, and one end of the second communicating pipe (12) far away from the reaction tank (13) is communicated with the peristaltic pump (11).
2. An acidity analyzer according to claim 1, wherein: an overflow pipe (5) is arranged on the overflow tank (4), and an overflow port (6) is arranged at one end, far away from the overflow tank (4), of the overflow pipe (5).
3. The acid-base concentration analyzer according to claim 1, wherein: all control, signal acquisition and transmission of the system are completed by the CPU mainboard.
4. The acid-base concentration analyzer according to claim 1, wherein: and an alkali liquor or an acid liquor is stored in the acid-acid alkali liquor tank, wherein the alkali liquor is a sodium hydroxide standard liquor, and the acid liquor is a dilute sulfuric acid standard liquor.
5. The acid-base concentration analyzer according to claim 1, wherein: the reaction tank (13) is in a cylindrical conical shape and is made of one of polypropylene, polyvinyl chloride, polyethylene and polystyrene.
6. The acid-base concentration analyzer according to claim 1, wherein: the overflow tank (4) is in a cylindrical conical shape and is made of one of polypropylene, polyvinyl chloride, polyethylene and polystyrene.
7. The acid-base concentration analyzer according to claim 1, wherein: the waste liquid pipe, the first communicating pipe (7), the second communicating pipe (12), the air pipe and the water outlet pipe (16) are all round pipes and are made of one of tetrafluoro, polypropylene, polyvinyl chloride, polyethylene and polystyrene.
8. The acid-base concentration analyzer according to claim 1, wherein: the material of the injection pump (17) is one of polyethylene, silica glass, sapphire and tetrafluoro.
9. The acid-base concentration analyzer according to claim 1, wherein: the control valve is a two-position two-way normally closed electromagnetic valve, and the valve body is made of one of brass, polyethylene, polytetrafluoroethylene and PTEF.
10. The acid-base concentration analyzer according to claim 1, wherein: whether the PH value in the reaction tank reaches the neutral judgment detection end point is collected through an accurate PH analyzer, the amount of liquid to be injected into the reaction tank is controlled through a 12000-step high-precision stepping motor, and the acid-base concentration of the sample liquid is calculated according to the amount of injected standard liquid when the detection end point is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110061113.2A CN112858425A (en) | 2021-01-18 | 2021-01-18 | Acidity analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110061113.2A CN112858425A (en) | 2021-01-18 | 2021-01-18 | Acidity analyzer |
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| CN112858425A true CN112858425A (en) | 2021-05-28 |
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| CN202110061113.2A Pending CN112858425A (en) | 2021-01-18 | 2021-01-18 | Acidity analyzer |
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2021
- 2021-01-18 CN CN202110061113.2A patent/CN112858425A/en active Pending
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|---|---|---|---|---|
| JPH03152445A (en) * | 1989-11-08 | 1991-06-28 | Nippon Shokubai Kagaku Kogyo Co Ltd | Method and apparatus for chemical emission quantification of ammonia |
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Application publication date: 20210528 |