CN112305154B - Automatic analysis detector for bentonite blue absorption amount and detection method thereof - Google Patents
Automatic analysis detector for bentonite blue absorption amount and detection method thereof Download PDFInfo
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
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Abstract
The invention discloses an automatic analysis detector for bentonite blue absorption, which comprises a control system, a solution injection system, a titration cell system, a solution storage system, a detection system, a cleaning system, a waste collection system and the like, wherein the cleaning system can ensure that no medicine residue exists in each instrument, and can avoid the influence on subsequent experiments; in addition, waste such as waste liquid and waste residue generated in detection can be collected through the waste collection system, so that the influence of the waste such as the waste liquid and the waste residue on the environment is avoided.
Description
Technical Field
The invention relates to the technical field of detection of bentonite blue absorption amount, in particular to an automatic analysis detector and a detection method of the bentonite blue absorption amount.
Background
The bentonite is a main slurry preparation material in the water-based drilling fluid, has better rheological property and portability, can effectively lubricate the drilling well and prevent corrosion, and is an auxiliary agent for improving viscosity and cutting, so that the bentonite can be prepared into excellent oil-in-water cement slurry and a high-temperature resistant stuck remover, thereby greatly improving the drilling speed and reducing the occurrence of accidents.
The blue absorption amount of bentonite is the capability of bentonite dispersed in aqueous solution to absorb methylene blue, the absorption amount is called blue absorption amount, and the higher the montmorillonite content in bentonite is, the more the absorption amount is. Therefore, the bentonite cymbidium can be used as a main technical index for preliminarily estimating the relative content of the montmorillonite in the bentonite ore.
At present, the analysis and detection of the blue absorption amount of the bentonite mainly uses some simple detecting instruments to generate errors easily by manually operating titration amount, in addition, human eyes are insensitive to the green stimulation change of a system, the final titration analysis result is often not clear, the detected data result is inaccurate, the detection process is labor-consuming and labor-consuming, and the existing large, time-saving, labor-saving and standard detecting instrument is expensive.
In order to solve the technical problems, chinese patent CN101493451A discloses an automatic analysis detector for bentonite blue absorption amount and a detection method thereof, which can realize automatic detection of bentonite blue absorption amount, but in the process of driving the telescopic rod to operate by the motor, the liquid drops are likely to drop in advance under the action of gravity, so that the empty drop phenomenon occurs.
Disclosure of Invention
The invention aims to provide an automatic analysis detector for bentonite blue absorption, which has the advantages of simple structure, convenient operation, no residual medicine influence and accurate detection result.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention specifically comprises the following steps:
the automatic analysis detector for the blue absorption amount of the bentonite comprises a control system, a solution injection system, a titration cell system, a solution storage system, a detection system, a cleaning system and a waste collection system, wherein the solution storage system is used for storing a solution to be detected, the solution injection system is used for transferring the solution to be detected in the solution storage system to the titration cell system, the titration cell system is used for uniformly mixing a detection reagent and the solution to be detected to form a mixed solution and transferring the mixed solution to the detection system, the detection system is used for determining a titration end point, and the cleaning system is used for cleaning the detection system, the solution injection system and the titration cell system; the waste collection system is used for collecting the residual mixed liquid in the titration cell system and the detection system.
Preferably, the control system includes a body, a controller is disposed inside the body, an operation panel is disposed at the top of the body, and the operation panel, the solution injection system, the titration cell system, the solution storage system, the detection system, the cleaning system, and the waste collection system are all connected to the controller.
Preferably, the titration cell system comprises an ultrasonic pot 2 arranged at the top of the body, a temperature control heating sheet connected with the controller is arranged at the bottom of the ultrasonic pot 2, and a first titration bottle 3, a first fixing frame 5 for fixing the first titration bottle 3, a second titration bottle 4 and a second fixing frame 6 for fixing the second titration bottle 4 are arranged in the ultrasonic pot.
Preferably, the solution injection system includes a first injection assembly, a second injection assembly and a third injection assembly which are arranged on the body, the first injection assembly includes a first syringe 7 and a first motor 11 connected to the first syringe 7, and the first motor 11 drives the first syringe 7 to suck the solution to be detected in the solution storage system and transfer the sucked solution to be detected to the first titration bottle 3; the second injection assembly comprises a second injector 8 and a second motor 14 connected with the second injector 8, the second motor 14 drives the second injector 8 to suck the first detection reagent in the solution storage system and transfer the sucked first detection reagent to the first titration bottle 3; the third injection assembly comprises a third syringe 9 and a third motor 15 connected with the third syringe 9, the third motor 15 drives the third syringe 9 to suck a second detection reagent in the solution storage system and transfer the sucked second detection reagent to the first titration flask 3, and the first motor 11, the second motor 14 and the third motor 15 are all electrically connected with the controller.
Preferably, the solution storage system comprises an electromagnetic valve 1 arranged at the top of the body, a plurality of first liquid storage pipes for storing the solution to be detected, at least one second liquid storage pipe for storing a first detection reagent and at least one third liquid storage pipe for storing a second detection reagent are arranged in the electromagnetic valve 1, and the outlet end of the first liquid storage pipe is communicated with the inlet end of the first syringe 7 through a pipeline; the outlet end of the second liquid storage pipe is communicated with the inlet end of the second injector 8 through a pipeline; the outlet end of the third liquid storage pipe is communicated with the inlet end of the third injector 9 through a pipeline.
Preferably, the detection system comprises a color recognition detector and a plurality of glass capillary tubes 13 arranged on the body, at least one gas cylinder for storing air is further arranged inside the solenoid valve 1, and the first motor 11 is further configured to drive the first syringe 7 to suck the air in the gas cylinder and inject the sucked air into the first titration flask 3 to press the liquid in the first titration flask 3 to flow through the second titration flask 6 and then enter the glass capillary tubes 13; the color recognition detector comprises a light source 10 for illuminating the glass capillary tube, a color recognizer connected with the controller and a fourth motor 16, wherein the fourth motor 16 is used for driving the color recognizer to be close to or far away from the glass capillary tube.
Preferably, the waste collection system comprises a liquid collection bottle arranged on the body, and the liquid collection bottle is respectively communicated with the liquid outlet of the glass capillary tube, the first titration bottle and the second titration bottle through pipelines.
Preferably, the cleaning system further comprises at least one fourth liquid storage pipe arranged inside the electromagnetic valve, the fourth liquid storage pipe is used for storing cleaning agent, and an outlet end of the fourth liquid storage pipe is communicated with inlet ends of the first injector, the second injector and the third injector through pipelines respectively.
A method for detecting the blue absorption amount of bentonite comprises the following steps:
treating the solution to be detected: injecting the solution to be detected in the solution storage system into a titration cell system by using a solution injection system, and then pretreating the solution to be detected in the titration cell system;
titration: respectively injecting a first detection reagent and a second detection reagent which are positioned in a solution storage system into a titration flask system by using a solution injection system to form a mixed solution;
a detection step: and determining the titration end point of the detection reagent by using a detection system, and determining the blue absorption amount of the bentonite according to the titration amount of the detection reagent.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses an automatic analysis detector for bentonite blue absorption, which comprises a control system, a solution injection system, a titration cell system, a solution storage system, a detection system, a cleaning system, a waste collection system and the like, wherein the cleaning system can ensure that no medicine residue exists in each instrument, and can avoid the influence on subsequent experiments; in addition, waste such as waste liquid and waste residue generated in detection can be collected through the waste collection system, so that the influence of the waste such as the waste liquid and the waste residue on the environment is avoided.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of an automatic analyzer according to the present invention;
wherein the reference numerals in fig. 1 are:
1. an electromagnetic valve; 2. an ultrasonic pan; 3. a first titration flask; 4. a second titration flask; 5. a first fixing frame; 6. a second fixing frame; 7. a first syringe; 8. a second syringe; 9. a third syringe; 10. a light source; 11. a first motor; 12. a liquid collecting bottle; 13. a glass capillary tube; 14. a second motor; 15. a third motor; 16. a fourth motor.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments is as follows:
example one
The embodiment provides an automatic analysis detector for bentonite blue absorption amount, as shown in fig. 1, the automatic analysis detector comprises a control system, a solution injection system, a titration cell system, a solution storage system, a detection system, a cleaning system and a waste collection system, wherein the solution storage system is used for storing a solution to be detected, the solution injection system is used for transferring the solution to be detected in the solution storage system to the titration cell system, the titration cell system is used for uniformly mixing a detection reagent and the solution to be detected to form a mixed solution and transferring the mixed solution to the detection system, the detection system is used for determining a titration end point, and the cleaning system is used for cleaning the detection system, the solution injection system and the titration cell system; the waste collection system is used for collecting the residual mixed liquid in the titration cell system and the detection system, and the cleaning system can ensure that no medicine residue exists in each instrument, so that the influence on the subsequent experiment can be avoided; in addition, waste such as waste liquid and waste residue generated in detection can be collected through the waste collection system, so that the influence of the waste such as the waste liquid and the waste residue on the environment is avoided.
Preferably, the control system comprises a body, a controller is arranged in the body, an operating panel is arranged at the top of the body, and the operating panel, the solution injection system, the titration cell system, the solution storage system, the detection system, the cleaning system and the waste collection system are all connected with the controller, so that the operation panel can control the operation of the solution injection system, the titration cell system, the solution storage system, the detection system, the cleaning system and the waste collection system to realize the automatic detection of the blue absorption amount of bentonite, the cleaning of the automatic analysis detector and the collection of waste mixed liquid.
Specifically, the operation panel includes a stop key, a pause key, a start key, a program selection key, and a zero-return key, and the stop key, the pause key, the start key, the program selection key, and the zero-return key are all connected to the controller, the stop key is used to control the controller to stop working, the pause key is used to control the controller to stop working, the start key is used to control the controller to start working, the program selection key is used for an experimenter to select an experimental program for analysis by the automatic analysis detector, and the zero-return key is used to perform zero-return processing on the automatic analysis detector.
In the present invention, the experimental program includes a blank sample program, a parallel sample program, and the like, and may be a program pre-stored in the controller or a program set by an external device (e.g., a computer).
Preferably, the titration cell system comprises an ultrasonic pot 2 arranged at the top of the body, a temperature control heating sheet connected with the controller is arranged at the bottom of the ultrasonic pot 2, a first titration bottle 3, a first fixing frame 5 for fixing the first titration bottle 3, a second titration bottle 4 and a second fixing frame 6 for fixing the second titration bottle 4 are arranged in the ultrasonic pot 2, specifically, the temperature control heating sheet comprises a heating strip and a constant temperature strip, so that the ultrasonic pot 2 can be heated by the heating strip, and the temperature of the ultrasonic pot 2 can be kept constant by the constant temperature strip.
Preferably, the solution injection system comprises a first injection assembly, a second injection assembly and a third injection assembly which are arranged on the body, the first injection assembly comprises a first syringe 7 and a first motor 11 connected with the first syringe 7, and the first motor 11 drives the first syringe 7 to suck the solution to be detected in the solution storage system and transfer the sucked solution to be detected to the first titration bottle 3; the second injection assembly comprises a second injector 8 and a second motor 14 connected with the second injector 8, the second motor 14 drives the second injector 8 to suck the first detection reagent in the solution storage system and transfer the sucked first detection reagent to the first titration bottle 3; the third injection assembly comprises a third syringe 9 and a third motor 15 connected with the third syringe 9, the third motor 15 drives the third syringe 9 to suck the second detection reagent in the solution storage system and transfer the sucked second detection reagent to the first titration bottle 3, and the first motor 11, the second motor 14 and the third motor 15 are all electrically connected with the controller.
Specifically, the first detection reagent is a methylene blue solution, and the second detection reagent is a flocculant.
Preferably, the solution storage system comprises an electromagnetic valve 1 arranged at the top of the body, a plurality of first liquid storage pipes for storing the solution to be detected, at least one second liquid storage pipe for storing a first detection reagent and at least one third liquid storage pipe for storing a second detection reagent are arranged in the electromagnetic valve 1, and the outlet end of the first liquid storage pipe is communicated with the inlet end of the first injector 7 through a pipeline; the outlet end of the second liquid storage pipe is communicated with the inlet end of the second injector 8 through a pipeline; the outlet end of the third liquid storage pipe is communicated with the inlet end of the third injector 9 through a pipeline.
Preferably, the detection system comprises a color recognition detector and a plurality of glass capillary tubes 13 arranged on the body, at least one gas cylinder for storing air is further arranged inside the solenoid valve 1, and the first motor 11 is further configured to drive the first syringe 7 to suck the air in the gas cylinder and inject the sucked air into the first titration flask 3 to press the liquid in the first titration flask 3 to flow through the second titration flask 4 and then enter the glass capillary tubes 13; the color recognition detector comprises a light source 10 for illuminating the glass capillary 13, a color recognizer connected with the controller, and a fourth motor 16, wherein the fourth motor 16 is used for driving the color recognizer to be close to or far away from the glass capillary 13.
Specifically, when detection is required, the light source 10 is used to irradiate the glass capillary 13, then the tristimulus value and chromaticity coordinates of the glass capillary 13 irradiated by the light source 10 are detected, and then the color difference of the compared colors in the glass capillary 13 is calculated by using a color difference formula, so that the glass capillary 13 is detected until the color difference value meets a preset condition, namely the reaction end point is reached.
As a further preferable scheme, the waste collection system comprises a liquid collecting bottle 12 arranged on the body, the liquid collecting bottle 12 is respectively communicated with the liquid outlet of the glass capillary tube 13, the first titration bottle 3 and the second titration bottle 4 through pipelines, when in operation, the first motor 11 drives the first injector 7 to suck air in the gas storage bottle and inject the sucked air into the first titration bottle 3, because the first titration bottle 3 and the second titration bottle 4 are sealed, when air enters the first titration bottle 3, part of residual liquid in the first titration bottle 3 is squeezed to flow through the second titration bottle 4 and the glass capillary tube 13 in sequence and then enter the liquid collecting bottle 12, and part of residual liquid directly enters the liquid collecting bottle 12; after the air enters the second titration bottle 4, part of residual liquid in the second titration bottle 4 is squeezed to flow through the glass capillary 13 and then enter the liquid collecting bottle 12, and part of residual liquid directly enters the liquid collecting bottle 12, so that no residual liquid exists in the first titration bottle 3, the second titration bottle 4 and the glass capillary 13, and the influence of the residual liquid on the analysis result is avoided.
Preferably, the cleaning system further includes at least one fourth liquid storage tube disposed inside the electromagnetic valve 1, the fourth liquid storage tube is used for storing a cleaning agent, and an outlet end of the fourth liquid storage tube is respectively communicated with inlet ends of the first syringe 7, the second syringe 8 and the third syringe 9 through a pipeline, so that the cleaning agent in the fourth liquid storage tube can flow through the first syringe 7, the second syringe 8, the third syringe 9, the first titration flask 3, the second titration flask 4 and the glass capillary tube 13, thereby completing cleaning of the first syringe 7, the second syringe 8, the third syringe 9, the first titration flask 3, the second titration flask 4 and the glass capillary tube 13.
Example two
The embodiment provides a method for detecting the blue absorption amount of bentonite, which comprises the following steps:
treating the solution to be detected: injecting the solution to be detected in the solution storage system into a titration cell system by using a solution injection system, and then pretreating the solution to be detected in the titration cell system;
titration: respectively injecting a first detection reagent and a second detection reagent which are positioned in a solution storage system into a titration flask system by using a solution injection system to form a mixed solution;
a detection step: and determining the titration end point of the detection reagent by using the detection system, and determining the blue absorption amount of the sprayed bentonite according to the titration amount of the detection reagent.
In order to illustrate the detection effect of the method for detecting the blue absorption amount of bentonite in this example, specific examples are given below.
1.5 solutions to be detected are prepared, and the specific preparation method is as follows:
1) special bentonite-based slurry for fresh water OCMA (epoxy-acrylate-maleic anhydride) drilling fluid
20g of sodium bentonite for the test is dried in a drying oven with constant temperature (the temperature is 105 ℃ plus or minus 5 ℃) for 4 hours, then 400g of distilled water and 0.8g of anhydrous sodium carbonate are added and stirred at high speed for 20 minutes, at least two times are stopped during the process to scrape off the adhesive adhered to the wall of the container, and the mixture is kept still in a closed container for 24 hours under the condition of room temperature.
2) Saturated saline base slurry
Drying 20g of test sodium bentonite in a drying oven at a constant temperature (105 +/-5 ℃) for 4 hours, adding 400g of distilled water and 0.8g of anhydrous sodium carbonate, stirring at a high speed for 20 minutes, stopping at least twice during the process to scrape off the adhered substances adhered to the wall of the container, adding 2.8g of high-viscosity sodium carboxymethyl cellulose until the addition amount (g/L) of the high-viscosity sodium carboxymethyl cellulose is 30mpa.s, taking the prepared base slurry, adding 120g of analytical pure NaCl, stirring at a high speed for 20 minutes, stopping at least twice during the process to scrape off the adhered substances adhered to the wall of the container, and standing and maintaining for 24 hours in a closed container at room temperature.
3) Saturated saline water well slurry
The well number is 3 inclined-22 wells, the well depth is 2280 m, the salt content is 308339.53mg/L, the well temperature is 63 ℃, and the pH value is 8.5.
The specific configuration method comprises the following steps: 1.5-3% of sodium soil, 0.2-2% of caustic soda, 1-3.0% of CMS, 0.5-2% of HV-CMC, 0.5-1.5% of flocculant and 30% of NaCl.
4) Polysulfonate drilling fluid system well slurry
Taking a well number SH9-P15, the well depth is 3746 m, the salt content is 31878.63mg/L, the well temperature is 51 ℃, the pH value is 9-11, and the specific preparation method comprises the following steps: 1-5% of sodium soil, 1-5.0% of KCl, 1-3% of K-1, 1-4% of SMP-2, 1-4% of SPNH, 0.1-3% of PAC-MV, 1.0-3.0% of polyalcohol, 2.0-3.0% of lubricant and 0.1-0.2% of NaOH.
5) Polyamine drilling fluid system well slurry
Taking 6 wells of well number grain, well depth of 2936 meters, salt content of 26565.53mg/L, well temperature of 54 ℃, pH of 9-10,
the specific configuration method comprises the following steps: 1-2% of sodium soil powder, 0.1-0.5% of NaOH, 2% of CMS, 0.5-2.5% of LV-CMC, 0.5-1.5% of binary additive, 1-3% of KCL and 1-3% of polyamine.
In the invention, 6 base slurries to be detected are prepared, and the preparation method comprises the following steps:
2. the method for detecting the blue absorption amount of bentonite provided in this embodiment is used to determine the blue absorption amount of the 5 solutions to be detected, and specifically includes:
(1) sucking 2mL of a solution to be detected stored in a solution storage system, 0.5mL of 1.25moL/L dilute sulfuric acid and 15mL of 3% H2O2 by using a solution injection system, and then injecting the three solutions into a titration cell system to form a mixed solution;
(2) heating, boiling and fixing the volume of the mixed solution in a titration cell system to make the total volume of the mixed solution be 50 mL;
(3) under the constant temperature condition of 25 ℃, the solution injection system sucks methylene blue from the solution storage system and injects and introduces methylene blue solution according to the speed of 0.1mL/10 s.
(4) And determining the titration end point of the methylene blue solution by using a detection system, and determining the blue absorption amount of the intercalated soil according to the titration amount of the detection reagent.
3. The method for detecting the content of the bentonite in the comparative example comprises the following steps:
aiming at the 5 solutions to be detected, detecting the content of blue absorption of the bentonite by using the following method, and taking the detection result as a comparative example 1 to a comparative example 5, wherein the specific steps are as follows:
(1) 2ml of drilling fluid is taken to be put into a conical flask, a small amount of water is added for dilution, a certain amount of 15ml of 3 percent hydrogen peroxide and 0.5ml of 2.5mol/L H are added 2 SO 4 ；
(2) Boiling the above solution to remove organic substances, and diluting with water to 50 ml;
(3) titration with methylene blue was performed, methylene blue was added to the flask in an amount of 0.5ml each time and shaken vigorously for 30s, a drop of liquid was taken with a stir bar onto the filter paper, and when the dye developed a blue ring around the stained solid, it was shaken vigorously for an additional 2 minutes, and a drop was taken onto the filter paper, and if a blue ring was still evident, the titration endpoint was reached.
Table 1 shows the blue absorption amounts of comparative examples 1 to 5 and examples 1 to 5, specifically:
TABLE 1 blue absorption of comparative and examples
The results show that: the blue absorption amount of the bentonite in the detection methods of the bentonite in the comparative examples 1 to 5 is higher than that in the examples 1 to 5, which shows that the detection method adopted in the comparative examples is more sensitive.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Claims (1)
1. A method for detecting the blue absorption amount of bentonite is characterized by comprising the following steps: the adopted automatic analysis detector comprises a control system, a solution injection system, a titration cell system, a solution storage system, a detection system, a cleaning system and a waste collection system, wherein the solution storage system is used for storing a solution to be detected, the solution injection system is used for transferring the solution to be detected in the solution storage system to the titration cell system, the titration cell system is used for uniformly mixing a detection reagent and the solution to be detected to form a mixed solution and transferring the mixed solution to the detection system, the detection system is used for determining a titration end point, and the cleaning system is used for cleaning the detection system, the solution injection system and the titration cell system; the waste collection system is used for collecting the residual mixed liquid in the titration cell system and the detection system;
the control system comprises a body, a controller is arranged in the body, an operation panel is arranged at the top of the body, and the operation panel, the solution injection system, the titration cell system, the solution storage system, the detection system, the cleaning system and the waste collection system are all connected with the controller;
the titration cell system comprises an ultrasonic pot arranged at the top of the body, a temperature control heating sheet connected with the controller is arranged at the bottom of the ultrasonic pot, and a first titration bottle, a first fixing frame for fixing the first titration bottle, a second titration bottle and a second fixing frame for fixing the second titration bottle are arranged in the ultrasonic pot;
the solution injection system comprises a first injection assembly, a second injection assembly and a third injection assembly which are arranged on the body, the first injection assembly comprises a first injector and a first motor connected with the first injector, and the first motor drives the first injector to suck the solution to be detected in the solution storage system and transfer the sucked solution to be detected to the first titration bottle; the second injection assembly comprises a second injector and a second motor connected with the second injector, and the second motor drives the second injector to suck the first detection reagent in the solution storage system and transfer the sucked first detection reagent to the first titration bottle; the third injection assembly comprises a third syringe and a third motor connected with the third syringe, the third motor drives the third syringe to suck a second detection reagent in the solution storage system and transfer the sucked second detection reagent into the first titration flask, and the first motor, the second motor and the third motor are all electrically connected with the controller;
the solution storage system comprises an electromagnetic valve arranged at the top of the body, a plurality of first liquid storage pipes for storing the solution to be detected, at least one second liquid storage pipe for storing a first detection reagent and at least one third liquid storage pipe for storing a second detection reagent are arranged in the electromagnetic valve, and the outlet end of the first liquid storage pipe is communicated with the inlet end of the first injector through a pipeline; the outlet end of the second liquid storage pipe is communicated with the inlet end of the second injector through a pipeline; the outlet end of the third liquid storage pipe is communicated with the inlet end of the third injector through a pipeline;
the detection system comprises a color recognition detector and a plurality of glass capillary tubes which are arranged on the body, at least one air storage bottle for storing air is arranged in the electromagnetic valve, the first motor is also used for driving the first injector to suck the air in the air storage bottle and injecting the sucked air into the first titration bottle so as to press the liquid in the first titration bottle to flow through the second titration bottle and then enter the glass capillary tubes; the color recognition detector comprises a light source for irradiating the glass capillary tube, a color recognizer connected with the controller and a fourth motor, and the fourth motor is used for driving the color recognizer to be close to or far away from the glass capillary tube;
the waste collection system comprises a liquid collection bottle arranged on the body, and the liquid collection bottle is respectively communicated with a liquid outlet of the glass capillary tube, the first titration bottle and the second titration bottle through pipelines; the cleaning system also comprises at least one fourth liquid storage pipe arranged inside the electromagnetic valve, the fourth liquid storage pipe is used for storing cleaning agent, and the outlet end of the fourth liquid storage pipe is respectively communicated with the inlet ends of the first injector, the second injector and the third injector through pipelines;
the detection comprises the following steps:
treating the solution to be detected: injecting the solution to be detected in the solution storage system into a titration cell system by using a solution injection system, and then pretreating the solution to be detected in the titration cell system;
titration: respectively injecting a first detection reagent and a second detection reagent which are positioned in a solution storage system into a titration cell system by using a solution injection system to form a mixed solution;
a detection step: determining a titration end point of the detection reagent by using a detection system, and determining the blue absorption amount of the sprayed bentonite according to the titration amount of the detection reagent;
the method for detecting the blue absorption amount of the bentonite comprises the following steps:
(1) sucking 2mL of the solution to be detected stored in the solution storage system, 0.5mL of 1.25moL/L dilute sulfuric acid and 15mL of 3% H by using a solution injection system 2 O 2 Then injecting the three solutions into a titration cell system to form a mixed solution;
(2) heating, boiling and fixing the volume of the mixed solution in a titration cell system to make the total volume of the mixed solution be 50 mL;
(3) under the constant temperature condition of 25 ℃, the solution injection system sucks methylene blue from the solution storage system and injects and introduces methylene blue solution according to the speed of 0.1mL/10 s;
(4) and determining the titration end point of the methylene blue solution by using a detection system, and determining the blue absorption amount of the sprayed soil according to the titration amount of the detection reagent.
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