CN113156051A - Engineering geological exploration water quality analysis method - Google Patents
Engineering geological exploration water quality analysis method Download PDFInfo
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- CN113156051A CN113156051A CN202110379622.XA CN202110379622A CN113156051A CN 113156051 A CN113156051 A CN 113156051A CN 202110379622 A CN202110379622 A CN 202110379622A CN 113156051 A CN113156051 A CN 113156051A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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
- G01N31/18—Burettes specially adapted for titration
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Abstract
The invention belongs to the technical field of water quality analysis, and particularly relates to a water quality analysis method for engineering geological exploration; the titration device used in the method comprises an iron support, a liquid inlet pipe, a liquid storage tank, a titration pipe and a titration tank; the iron support comprises a base and an iron rod, and the iron rod is vertically arranged on the base; the liquid inlet pipe, the liquid storage tank and the burette are communicated with each other from top to bottom; a control valve is arranged on the burette; the outer side of the liquid storage tank is fixedly connected with a supporting rod; the supporting rod is fixedly connected with an iron clamp, and one end of the iron clamp, which is far away from the supporting plate, is clamped on the iron rod; an extrusion module is arranged above the liquid inlet pipe; the extrusion module comprises a bottom plate, a T-shaped rod, a first spring and a first piston; a bottom plate is arranged at the top of the liquid inlet pipe; the upper surface of the bottom plate is connected with a first spring; the first spring is sleeved on the T-shaped rod; the titration device is mainly used for solving the problems of complex operation and large experimental error of the titration device in the prior art.
Description
Technical Field
The invention belongs to the technical field of water quality analysis, and particularly relates to a water quality analysis method for engineering geological exploration.
Background
With the continuous progress of modern economy and scientific technology, the construction technology in the engineering and building field is continuously improved and perfected. At the present stage, the water quality analysis in engineering geological exploration plays an increasingly prominent role in engineering building construction. Engineering geological exploration water quality analysis mainly comprises the corrosion evaluation analysis of environmental water on building materials, the hydrological conditions of an engineering area are found out, the main ion content of sodium ions, potassium ions, calcium ions, magnesium ions, ammonia ions, chloride ions, sulfate radicals, bicarbonate radicals, carbonate radicals, nitrate radicals and the like in water, the pH value, free carbon dioxide, erosive carbon dioxide and the like are measured through reasonable and standardized water quality analysis, more scientific data support is provided for researching the mineralization degree and the pH value of the environmental water and the erosive property of substances in the water on the building materials in engineering geology, and existing engineering problems are analyzed and evaluated.
At present, the water quality analysis of engineering geological exploration mainly adopts a titration method or a colorimetric method, for example, chloride ions adopt silver nitrate solution titration, sulfate radicals adopt EDTA complexation and barium chloride solution titration, calcium ions and magnesium ions adopt EDTA solution titration, and the like.
In the titration process, a standard solution is required to be filled into a burette, a solution to be measured is filled into a conical flask, then the liquid to be measured in the conical flask is calibrated by operating the burette, and as the volume of the burette is fixed, when the concentration of the liquid to be measured in the conical flask is high, the standard solution is required to be added into the burette for carrying out titration for multiple times, so that the liquid in the burette is required to be read for multiple times, and an experimenter has large errors in the reading process, which can influence the accuracy of a titration experiment; meanwhile, in the titration experiment process, the bottle body is required to be continuously shaken by holding the bottle, the cock or the blocking bead of the burette is controlled by one hand, the outflow speed and the outflow quantity of the standard liquid are adjusted and mastered, so that the experimenter needs to concentrate highly in operation, and once the titration exceeds the terminal point, the experiment needs to be carried out again, and the workload of the experimenter is increased.
Some technical schemes about titration apparatus have also appeared among the prior art, chinese patent with application number CN2016102962113 discloses an automatic potentiometric titrator, including the controller, titrator and titration district, the surface of titrator is provided with electric connection line, the controller is installed on electric connection line, the rear end of titrator is provided with the dead lever, the fixed head is installed in the top of dead lever, the right-hand member of fixed head is connected with the solenoid valve, the buret is installed on the solenoid valve, the right-hand member of solenoid valve is connected with the electrode mount, the welding of the below of electrode mount has indicator electrode and reference electrode, the buret, indicator electrode and reference electrode set up in the top of titration district, the titration district sets up the upper surface at the titrator.
The automatic potentiometric titrator in the scheme saves manpower and power resources, is ingenious in design, achieves simple structure and high cost, and cannot be popularized and used; therefore, the invention provides a water quality analysis method for engineering geological exploration, and the titration device used in the method has a simple structure and is convenient to operate, and experimental errors can be greatly reduced.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a water quality analysis method for engineering geological exploration, which is mainly used for solving the problems of complex operation and large experimental error of a titration device in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a water quality analysis method for engineering geological exploration comprises the following steps:
s1: firstly, adding a quantitative water sample to be detected into a titration cell, adding an indicator, uniformly mixing, and adding an indicator standard solution after the burette is subjected to leak detection;
s2: assembling the titration device, firstly fixing the position of the liquid inlet pipe, then plugging a piston into the liquid inlet pipe and pressing the T-shaped rod by hand to contract a spring, and then releasing the T-shaped rod to enable the T-shaped rod and the rotating wheel to be mutually abutted;
s3: starting a motor, controlling a first piston to descend in a liquid inlet pipe in a variable speed manner, so that a titration liquid is dripped into a titration tank to be mixed with a water sample to be tested, and judging a titration end point through color change in the titration tank;
s4: reading the consumption of the titration solution, and calculating various index values measured in the water sample so as to evaluate the water quality;
the titration device used in S1 comprises an iron support, a liquid inlet pipe, a liquid storage tank, a titration pipe and a titration tank; the iron support comprises a base and an iron rod, and the iron rod is vertically arranged on the base; the liquid inlet pipe, the liquid storage tank and the burette are communicated with each other from top to bottom; a control valve is arranged on the burette; the outer side of the liquid storage tank is fixedly connected with a supporting rod; the supporting rod is fixedly connected with an iron clamp, and one end of the iron clamp, which is far away from the supporting rod, is clamped on the iron rod; an extrusion module is arranged above the liquid inlet pipe;
the extrusion module comprises a bottom plate, a T-shaped rod, a first spring and a first piston; a bottom plate is arranged at the top of the liquid inlet pipe; the upper surface of the bottom plate is connected with a first spring; the first spring is sleeved on the T-shaped rod; the tail end of the T-shaped rod penetrates through the bottom plate and extends into the liquid inlet pipe; the tail end of the T-shaped rod is connected with a first piston, and the first piston is positioned in the liquid inlet pipe and is in sliding connection with the liquid inlet pipe; a rotating wheel is arranged above the T-shaped rod; a rotating rod is eccentrically arranged on the side surface of the rotating wheel; a motor is arranged at one end of the rotating rod, which is far away from the rotating wheel, and the motor is fixed on the iron rod through a motor support;
in the traditional technology, a titration device used in a titration experiment is simple in structure but complex in operation, and large in experimental error, when the titration device works, a control valve is closed firstly, a titration solution is added into a liquid storage tank from a liquid inlet pipe, then the titration device is assembled, an iron clamp is fixed on an iron rod firstly, so that the position of the liquid inlet pipe is relatively fixed, then a piston I is plugged into the liquid inlet pipe, a T-shaped rod is pressed by hand, a spring I contracts, and then the T-shaped rod is released, so that the T-shaped rod and a rotating wheel are abutted tightly; simultaneously adding the prepared water sample and indicator mixed solution into the titration cell, and placing the titration cell below a burette for detecting CO in the water sample2When the content is high, the standard solution adopts NaOH reagent, and the indicator adopts phenolphthalein; then opening a valve of the control valve and starting the motor to enable the motor to drive the rotating rod to rotate, wherein the rotating wheel also rotates along with the rotating rod, and the rotating radius of the rotating wheel is continuously increased in the rotating process due to the eccentric installation of the rotating wheel, so that pressure is applied to the T-shaped rod, and the first piston moves downwards in the liquid inlet pipe; setting the rotation speed of a motor in advance to ensure that the first piston descends in the liquid inlet pipe in a variable speed manner, dropping the titration liquid into a titration tank from the discharge end of the burette in a variable speed manner to be mixed with a water sample to be detected, shaking the titration tank by hands continuously at the moment and observing the color change in the titration tank, and turning off the motor when the titration end point is reached;
according to the invention, through the design of the extrusion module, the first piston is descended in the liquid inlet pipe in a variable speed manner, and compared with the control valve which is manually operated to control the dropping speed in the traditional laboratory during the titration, the invention can enable a laboratory worker to save more labor during the experiment, better concentrate on observing the titration end point, and reduce the influence of random errors on the experiment result.
Preferably, three groups of burettes with the same specification are connected below the liquid storage tank, and a flowmeter is mounted on each burette; when the device works, a water sample needs to be measured for multiple times in a laboratory, the accuracy of a detection result is improved by an averaging mode, and the titration liquid in the liquid storage tank can flow into three groups of burettes simultaneously, so that the aim of carrying out multiple parallel titration experiments simultaneously is fulfilled, the working efficiency is improved, errors of experimental data caused by multiple test operations are avoided, and the device is simple in structure and convenient to manufacture.
Preferably, the burette is sleeved with a conical sleeve, and the conical sleeve is close to the bottom of the burette; the conical sleeve is provided with a gas pipe which is communicated with the burette; a glass tube is arranged outside the conical sleeve and is communicated with a gas delivery pipe; one end of the glass tube, which is far away from the gas transmission pipe, is connected with an air bag; the during operation, because the titration speed of titrating the later stage is slower, lead to buret tip to store up liquid more, the titration liquid volume of measurationing out is big partially, influences the experimental result, extrudees the gasbag with the hand this moment for gas in the gasbag passes through the gas-supply pipe and gets into the buret discharge end, blows down the titration liquid that stores up in the discharge end and gets into the titration cell, thereby makes the testing result more accurate.
Preferably, a second piston is connected in the gas pipe in a sliding manner; one end of the second piston, which is far away from the burette, is connected with the inner wall of the gas pipe through a second spring; the during operation, the gasbag resumes to aerify the in-process and can suck partial titration liquid backward, inhales the gas-supply pipe with it in, the gasbag can promote No. two pistons at a plurality of extrusion processes and move in the gas-supply pipe, and No. two pistons can push back the liquid of adhesion at the gas-supply pipe inner wall in the buret on the one hand, and on the other hand can play and block the effect to reduce the loss of deposit liquid, make the experimental result more accurate.
Preferably, a magnetic stirrer is arranged below the titration cell, and a rotor is arranged in the titration cell; during operation, start magnetic stirrers, utilize the principle of the like charges repulsion characteristic of magnetic object to make the rotor rotate in the titration cell to stir liquid, do not need the manual mixing that rocks this moment, thereby saved the manpower and improved stirring efficiency.
Preferably, the rotor is an i-shaped rotor, and only the lower layer of the rotor has magnetism; during operation, traditional rotor simple structure, and can only stir the liquid of titration cell bottom, the rotor of I-shaped this moment can increase the stirring scope for liquid mixes more evenly, thereby makes experimenter quick more and accurate observation to titrate the terminal point, has improved the degree of accuracy of testing result.
The invention has the following beneficial effects:
1. the titration device used in the invention enables the first piston to descend in the liquid inlet pipe in a variable speed manner through the design of the extrusion module, and compared with the conventional laboratory in which a control valve is manually operated to control the dropping speed during titration, the titration device enables a laboratory worker to save more labor during experiments, better concentrate on observing the titration end point, and reduces the influence of random errors on the experimental results.
2. In the titration device used in the invention, the titration liquid in the liquid storage tank can simultaneously flow into the three groups of the titration tubes, thereby realizing the purpose of simultaneously carrying out a plurality of parallel titration experiments, improving the working efficiency, avoiding the error of experimental data caused by a plurality of times of experimental operations, and having simple structure and convenient manufacture.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a diagram of the method steps of the present invention;
FIG. 2 is a perspective view of a titration apparatus for use in the present invention;
FIG. 3 is a block diagram of a squeezing module in a titration apparatus for use in the invention;
FIG. 4 is a view showing the internal structure of a burette in the titration apparatus used in the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
in the figure: the device comprises an iron support 1, a base 11, an iron rod 12, a liquid inlet pipe 2, a liquid storage tank 3, a support rod 31, an iron clamp 32, a burette 4, a control valve 41, a flowmeter 42, a conical sleeve 43, a gas pipe 431, a glass pipe 432, a gas bag 433, a second piston 434, a second spring 435, a titration cell 5, an extrusion module 6, a bottom plate 61, a T-shaped rod 62, a first spring 63, a first piston 64, a rotating wheel 65, a rotating rod 66, a motor 67, a magnetic stirrer 68 and a rotor 69.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, the method for analyzing water quality in engineering geological exploration according to the present invention comprises the following steps:
s1: firstly, adding a water sample to be measured in a fixed quantity into a titration cell 5, adding an indicator, uniformly mixing, and adding an indicator standard solution after the burette 4 is subjected to leak detection;
s2: assembling the titration apparatus, fixing the position of the liquid inlet pipe 2, then plugging the first piston 64 into the liquid inlet pipe 2 and pressing the T-shaped rod 62 with a hand to contract the first spring 63, and then releasing the T-shaped rod 62 to make the T-shaped rod 62 and the rotating wheel 65 abut against each other;
s3: starting a motor 67, controlling the first piston 64 to descend in the liquid inlet pipe 2 at variable speed, so that the titration liquid is dripped into the titration cell 5 to be mixed with a water sample to be tested, and judging a titration end point through color change in the titration cell 5;
s4: reading the consumption of the titration solution, and calculating various index values measured in the water sample so as to evaluate the water quality;
the titration device used in the step S1 comprises an iron support 1, a liquid inlet pipe 2, a liquid storage tank 3, a titration pipe 4 and a titration tank 5; the iron stand 1 comprises a base 11 and an iron rod 12, wherein the iron rod 12 is vertically arranged on the base 11; the liquid inlet pipe 2, the liquid storage tank 3 and the burette 4 are communicated with each other from top to bottom; a control valve 41 is arranged on the burette 4; the outer side of the liquid storage tank 3 is fixedly connected with a support rod 31; the supporting rod 31 is fixedly connected with an iron clamp 32, and one end of the iron clamp 32, which is far away from the supporting rod 31, is clamped on the iron rod 12; an extrusion module 6 is arranged above the liquid inlet pipe 2;
the extrusion module 6 comprises a bottom plate 61, a T-shaped rod 62, a first spring 63 and a first piston 64; the top of the liquid inlet pipe 2 is provided with a bottom plate 61; the upper surface of the bottom plate 61 is connected with a first spring 63; the first spring 63 is sleeved on the T-shaped rod 62; the tail end of the T-shaped rod 62 penetrates through the bottom plate 61 and extends into the liquid inlet pipe 2; the tail end of the T-shaped rod 62 is connected with a first piston 64, and the first piston 64 is positioned in the liquid inlet pipe 2 and is connected with the liquid inlet pipe 2 in a sliding manner; a rotating wheel 65 is arranged above the T-shaped rod 62; a rotating rod 66 is eccentrically arranged on the side surface of the rotating wheel 65; a motor 67 is arranged at one end of the rotating rod 66 far away from the rotating wheel 65, and the motor 67 is fixed on the iron rod 12 through a motor support;
in the traditional technology, the titration apparatus used in the titration experiment has simple structure but complex operation and large experimental error, and when the titration apparatus works, the control valve 41 is firstly closed, the titration liquid is added into the liquid storage tank 3 from the liquid inlet pipe 2, then the titration apparatus is assembled, the iron clamp 32 is firstly fixed on the iron rod 12, so that the position of the liquid inlet pipe 2 is relatively fixed, then the first piston 64 is plugged into the liquid inlet pipe 2 and the T-shaped rod 62 is pressed by hand, so that the first spring 63 contracts, and then the T-shaped rod 62 is released, so that the T-shaped rod 62 and the rotating wheel 65 are mutually abutted; simultaneously adding the prepared water sample and indicator mixed solution into the titration tank 5, and placing the titration tank below the burette 4, for example, detecting CO in the water sample2When the content is high, the standard solution adopts NaOH reagent, and the indicator adopts phenolphthalein; then the valve of the control valve 41 is opened and the motor 67 is started, so that the motor 67 drives the rotating rod 66 to rotate, at the moment, the rotating wheel 65 also rotates along with the rotating rod 66, and the rotating radius of the rotating wheel 65 is continuously increased in the rotating process due to the eccentric installation of the rotating wheel 65, so that pressure is applied to the T-shaped rod 62, and the first piston 64 moves downwards in the liquid inlet pipe 2; setting the rotating speed of the motor 67 in advance to ensure that the first piston 64 descends in the liquid inlet pipe 2 at a variable speed, dropping the titration liquid into the titration tank 5 from the discharge end of the burette 4 at a variable speed to be mixed with a water sample to be detected, shaking the titration tank 5 by hands continuously at the moment and observing the color change in the titration tank 5, and turning off the motor 67 when the titration end point is reached;
according to the invention, through the design of the extrusion module 6, the first piston 64 is descended in the liquid inlet pipe 2 in a variable speed manner, and compared with the conventional laboratory in which a laboratory worker controls the dropping speed by manually operating the control valve 41 during the titration, the invention can ensure that the laboratory worker saves more labor during the experiment, better concentrates on observing the titration end point, and reduces the influence of random errors on the experiment result.
As an embodiment of the present invention, three sets of burettes 4 with the same specification are connected below the liquid storage tank 3, and a flow meter 42 is installed on each burette 4; when the device works, a water sample needs to be measured for multiple times in a laboratory, the accuracy of a detection result is improved by an averaging mode, and the titration liquid in the liquid storage tank 3 can flow into the three groups of burettes 4 simultaneously, so that the purpose of carrying out multiple parallel titration experiments simultaneously is realized, the working efficiency is improved, errors of experimental data caused by multiple test operations are avoided, and the device is simple in structure and convenient to manufacture.
As an embodiment of the present invention, a tapered sleeve 43 is sleeved on the burette 4, and the tapered sleeve 43 is close to the bottom of the burette 4; a gas pipe 431 is arranged in the conical sleeve 43, and the gas pipe 431 is communicated with the burette 4; a glass tube 432 is arranged on the outer side of the conical sleeve 43, and the glass tube 432 is communicated with the gas pipe 431; one end of the glass tube 432, which is far away from the gas conveying pipe 431, is connected with a gas bag 433; the during operation, because the titration speed of titrating the later stage is slower, it is more to lead to 4 tip of buret to store up liquid, and the titration liquid volume of metering out is big on the large side, influences the experimental result, extrudees gasbag 433 with the hand this moment for gas in the gasbag 433 gets into 4 discharge ends of buret through gas-supply pipe 431, blows off the titration liquid that stores up in the discharge end and gets into titration cell 5, thereby makes the testing result more accurate.
As an embodiment of the present invention, a second piston 434 is slidably connected in the gas pipe 431; one end of the second piston 434, which is far away from the burette 4, is connected with the inner wall of the gas pipe 431 through a second spring 435; during operation, gasbag 433 can suck back some titration liquid at the recovery inflation in-process, with its inhale the gas-supply pipe 431 in, gasbag 433 can promote No. two pistons 434 at the gas-supply pipe 431 internal motion at many times extrusion in-process, and No. two pistons 434 can push back the adhesion in the liquid of gas-supply pipe 431 inner wall buret 4 on the one hand, and on the other hand can play and block the effect to reduce the loss of deposit liquid, make the experimental result more accurate.
As an embodiment of the present invention, a magnetic stirrer 68 is arranged below the titration tank 5, and a rotor 69 is arranged in the titration tank 5; during operation, the magnetic stirrer 68 is started, the rotor 69 rotates in the titration cell 5 by utilizing the principle of like-pole repulsion characteristic of magnetic objects, so that liquid is stirred, and at the moment, uniform mixing is not needed to be shaken manually, so that manpower is saved, and the stirring efficiency is improved.
As an embodiment of the present invention, the rotor 69 is an i-shaped rotor 69, and only the lower layer of the rotor 69 has magnetism; during operation, traditional rotor 69 simple structure, and can only stir the liquid of titration cell 5 bottoms, the rotor 69 of I-shaped this moment can increase the stirring scope for liquid mixes more evenly, thereby makes the experimenter more quick and accurate observation to titrate the terminal point, has improved the degree of accuracy of testing result.
During working, in the traditional technology, the titration apparatus used in the titration experiment is simple in structure but complex in operation, and large in experimental error, while the titration apparatus works, the control valve 41 is closed firstly, the titration liquid is added into the liquid storage tank 3 from the liquid inlet pipe 2, then the titration apparatus is assembled, the iron clamp 32 is fixed on the iron rod 12 firstly, so that the position of the liquid inlet pipe 2 is relatively fixed, then the first piston 64 is plugged into the liquid inlet pipe 2, the T-shaped rod 62 is pressed by hand, so that the first spring 63 is contracted, and then the T-shaped rod 62 is released, so that the T-shaped rod 62 and the rotating wheel 65 are abutted against each other; simultaneously adding the prepared water sample and indicator mixed solution into the titration tank 5, and placing the titration tank below the burette 4, for example, detecting CO in the water sample2When the content is high, the standard solution adopts NaOH reagent, and the indicator adopts phenolphthalein; then the valve of the control valve 41 is opened and the motor 67 is started, so that the motor 67 drives the rotating rod 66 to rotate, at the moment, the rotating wheel 65 also rotates along with the rotating rod 66, and the rotating radius of the rotating wheel 65 is continuously increased in the rotating process due to the eccentric installation of the rotating wheel 65, so that pressure is applied to the T-shaped rod 62, and the first piston 64 moves downwards in the liquid inlet pipe 2; the rotating speed of the motor 67 is set in advance, so that the motor can work in the first placeThe plug 64 descends in the liquid inlet pipe 2 at a variable speed, and the titration liquid is dripped into the titration cell 5 from the discharge end of the burette 4 at a variable speed to be mixed with a water sample to be detected, at the moment, hands shake the titration cell 5 continuously and observe the color change in the titration cell 5, and the motor 67 can be turned off when the titration end point is reached; according to the invention, through the design of the extrusion module 6, the first piston 64 is lowered in the liquid inlet pipe 2 in a variable speed manner, and compared with the control valve 41 manually operated and controlled to control the dropping speed in the traditional laboratory during the titration, the invention has the advantages that the labor is saved for a laboratory during the experiment, the titration end point is observed in a better concentrated manner, and the influence of random errors on the experiment result is reduced;
because a water sample needs to be measured for multiple times in a laboratory and the accuracy of a detection result is improved by means of averaging, the titration liquid in the liquid storage tank 3 can flow into the three groups of burettes 4 simultaneously, so that the aim of carrying out multiple parallel titration experiments simultaneously is fulfilled, the working efficiency is improved, errors of experimental data caused by multiple test operations are avoided, and the device is simple in structure and convenient to manufacture;
at the later stage of titration, more liquid is accumulated at the end part of the burette 4 due to the slow titration speed, the volume of the metered titration liquid is larger, and the experimental result is influenced, at the moment, the air bag 433 is squeezed by hands, so that the gas in the air bag 433 enters the discharge end of the burette 4 through the gas pipe 431, the titration liquid accumulated in the discharge end is blown down and enters the titration cell 5, and the detection result is more accurate;
meanwhile, the air bag 433 can suck part of the titration liquid backwards in the process of restoring the inflation and suck the titration liquid into the air conveying pipe 431, the air bag 433 can push the second piston 434 to move in the air conveying pipe 431 in the process of extruding for many times, on one hand, the second piston 434 can push the liquid adhered to the inner wall of the air conveying pipe 431 back into the titration pipe 4, on the other hand, the blocking effect can be achieved, so that the loss of accumulated liquid is reduced, and the experimental result is more accurate;
the magnetic stirrer 68 is started, the rotor 69 rotates in the titration cell 5 by utilizing the principle that like poles of magnetic objects repel each other, so that the liquid is stirred, and at the moment, the liquid does not need to be shaken and mixed evenly manually, so that the manpower is saved and the stirring efficiency is improved; traditional rotor 69 simple structure, and can only stir the liquid of titration cell 5 bottom, the rotor 69 of I-shaped this moment can increase the stirring scope for liquid mixes more evenly, thereby makes the experimenter more quick and accurate observation to titrate the terminal point, has improved the degree of accuracy of testing result.
The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A water quality analysis method for engineering geological exploration is characterized by comprising the following steps:
s1: adding a water sample to be measured in a fixed quantity into the titration cell (5), adding an indicator, uniformly mixing, and adding a standard indicator after the burette (4) is subjected to leak detection;
s2: assembling the titration apparatus, firstly fixing the position of the liquid inlet pipe (2), then plugging a first piston (64) into the liquid inlet pipe (2) and pressing a T-shaped rod (62) by hand to contract a first spring (63), and then releasing the T-shaped rod (62) to enable the T-shaped rod (62) and a rotating wheel (65) to be mutually abutted;
s3: starting a motor (67), controlling a first piston (64) to descend in the liquid inlet pipe (2) at a variable speed, dropping a titration solution into the titration tank (5) to be mixed with a water sample to be tested, and judging a titration end point through color change in the titration tank (5);
s4: reading the consumption of the titration solution, and calculating various index values measured in the water sample so as to evaluate the water quality;
the titration device used in S1 comprises an iron stand (1), a liquid inlet pipe (2), a liquid storage tank (3), a titration pipe (4) and a titration tank (5); the iron stand platform (1) comprises a base (11) and an iron rod (12), wherein the iron rod (12) is vertically arranged on the base (11); the liquid inlet pipe (2), the liquid storage tank (3) and the burette (4) are communicated with each other from top to bottom; a control valve (41) is arranged on the burette (4); the outer side of the liquid storage tank (3) is fixedly connected with a support rod (31); the supporting rod (31) is fixedly connected with an iron clamp (32), and one end of the iron clamp (32) far away from the supporting plate is clamped on the iron rod (12); an extrusion module (6) is arranged above the liquid inlet pipe (2);
the extrusion module (6) comprises a bottom plate (61), a T-shaped rod (62), a first spring (63) and a first piston (64); a bottom plate (61) is arranged at the top of the liquid inlet pipe (2); the upper surface of the bottom plate (61) is connected with a first spring (63); the first spring (63) is sleeved on the T-shaped rod (62); the tail end of the T-shaped rod (62) penetrates through the bottom plate (61) and extends into the liquid inlet pipe (2); the tail end of the T-shaped rod (62) is connected with a first piston (64), and the first piston (64) is positioned in the liquid inlet pipe (2) and is in sliding connection with the liquid inlet pipe (2); a rotating wheel (65) is arranged above the T-shaped rod (62); a rotating rod (66) is eccentrically arranged on the side surface of the rotating wheel (65); rotating rod (66) are kept away from runner (65) one end and are installed motor (67), and motor (67) pass through the motor support and fix on the iron stand.
2. The method for analyzing water quality in engineering geological exploration according to claim 1, which is characterized in that: and three groups of burettes (4) with the same specification are connected below the liquid storage tank (3), and a flowmeter (42) is installed on each burette (4).
3. The method for analyzing water quality in engineering geological exploration, according to claim 2, is characterized in that: the burette (4) is sleeved with a conical sleeve (43), and the conical sleeve (43) is close to the bottom of the burette (4); a gas pipe (431) is arranged in the conical sleeve (43), and the gas pipe (431) is communicated with the burette (4); a glass tube (432) is arranged on the outer side of the conical sleeve (43), and the glass tube (432) is communicated with the gas conveying pipe (431); one end of the glass tube (432) far away from the gas transmission tube (431) is connected with a gas bag (433).
4. The method for analyzing water quality in engineering geological exploration according to claim 3, wherein the method comprises the following steps: a second piston (434) is connected in the air pipe (431) in a sliding way; one end of the second piston (434), which is far away from the burette (4), is connected with the inner wall of the gas transmission pipe (431) through a second spring (435).
5. The method for analyzing water quality in engineering geological exploration according to claim 4, wherein the method comprises the following steps: a magnetic stirrer (68) is arranged below the titration cell (5), and a rotor (69) is arranged in the titration cell (5).
6. The method for analyzing water quality in engineering geological exploration according to claim 5, wherein the method comprises the following steps: the rotor (69) is an I-shaped rotor (69), and only the lower layer of the rotor (69) has magnetism.
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| CN202110379622.XA CN113156051A (en) | 2021-04-08 | 2021-04-08 | Engineering geological exploration water quality analysis method |
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Cited By (1)
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| CN114545015A (en) * | 2022-04-27 | 2022-05-27 | 潍坊市检验检测中心 | Liquid transfer device for food detection |
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| CN114545015B (en) * | 2022-04-27 | 2022-07-05 | 潍坊市检验检测中心 | Liquid transfer device for food detection |
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