CN108107169A - A kind of agitating device and method of accessible sampling sample introduction - Google Patents
A kind of agitating device and method of accessible sampling sample introduction Download PDFInfo
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- CN108107169A CN108107169A CN201711220366.XA CN201711220366A CN108107169A CN 108107169 A CN108107169 A CN 108107169A CN 201711220366 A CN201711220366 A CN 201711220366A CN 108107169 A CN108107169 A CN 108107169A
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- 238000005070 sampling Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 96
- 239000000243 solution Substances 0.000 claims abstract description 73
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 239000011259 mixed solution Substances 0.000 claims abstract description 21
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 16
- 230000037361 pathway Effects 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000004458 analytical method Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 abstract description 6
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- 238000003149 assay kit Methods 0.000 description 23
- 239000012452 mother liquor Substances 0.000 description 14
- 238000009434 installation Methods 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
Abstract
The invention discloses a kind of agitating devices and method of accessible sampling sample introduction, including solution mixing pit (1), peristaltic pump (6) and magnetic stirrer (7), the mixed solution pond (1) is included with open major trough body (11), capping (12), the capping (12) is used to cover the opening in major trough body (11), closing major trough body (11)；Major trough body (11) bottom is provided with feed pathway (111), detection liquid flow pass (112) and apocenosis passage (113).The present invention carries out mixing pit using solution from bottom of pond portion, while top is capped, this structure can reduce the influence of the evaporation of solution, mixing pool wall solution wall built-up phenomenon to precision preparation.Therefore the present invention need not stop stirring when sampling sample introduction.
Description
Technical field
The present invention relates to the stirrings in a kind of agitating device design method more particularly to a kind of Water Test Kits calibrating installation
The design of device.
Background technology
In environment water monitoring system, generally water body parameter is detected using online water analysis instrument, online water
Whether the accuracy of detection of matter analyzer meets national verification regulatory requirements, general using manually to the meter of online water analysis instrument
Amount performance is calibrated, and long time period when small (generally require 36) of artificial detection in-line analyzer.And how water is set
Agitating device in matter analyzer calibrating installation is to influence the big factor that calibrating installation solution is prepared.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, it is same that the present invention provides a kind of accessible sampling sample introduction
When configure solution it is with high accuracy it is accessible sampling sample introduction agitating device and method.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：
A kind of agitating device of accessible sampling sample introduction, including solution mixing pit (1), peristaltic pump (6) and electromagnetic agitation
Device (7), wherein：
The mixed solution pond (1) is included with open major trough body (11), capping (12), and the capping (12) is used to cover
In the opening of major trough body (11), major trough body (11) is closed.Major trough body (11) bottom is provided with feed pathway (111), inspection
Survey liquid flow pass (112) and apocenosis passage (113).
The magnetic stirrer (7) includes electromagnet fixed seat (71), electromagnet (72), stirrer (73), the electromagnetism
Ferropexy seat (71) is used to electromagnet (72) being fixed on the bottom of major trough body (11), and the stirrer (73) is arranged at master
Groove body (11) interior intracavitary.
Fixed block hole (711) is provided on the electromagnet fixed seat (71).Drain pipe passes through fixed block hole (711)
It is connected with apocenosis passage (113), peristaltic pump (6) is provided on the drain pipe.
Preferably：Star-like handle nut (121) is provided on the capping (12).
Preferably：The capping (12) is provided with sealing ring with the place that the opening of major trough body (11) is in contact.
Preferably：The shape of the inner cavity of the major trough body (11) is infundibulate.
Preferably：The inlet of the apocenosis passage (113) is located at the bottom of major trough body (11) inner cavity, and the feed liquor leads to
The inlet in road (111) is higher than the inlet of detection liquid flow pass (112), while the inlet of the apocenosis passage (113)
Less than the inlet of detection liquid flow pass (112), the detection liquid flow pass (112) is used to connect inspection by sampling equipment.
A kind of stirring means of the agitating device of accessible sampling sample introduction, comprise the following steps：
Step 1, solution to be mixed is injected to major trough body (11) inner cavity by feed pathway (111).
Step 2, magnetic stirrer (7) is started, stirrer is by the agitation of major trough body (11) inner cavity.
Step 3, when solution is stirred, the solution being stirred is introduced into analysis by detecting liquid flow pass (112)
It is analyzed in instrument.
Step 4, after analysis is good, by the effect of peristaltic pump (6), solution is discharged from apocenosis passage (113).
The present invention compared with prior art, has the advantages that：
The present invention is arranged at the bottom of inner cavity using feed pathway (111) so that dilution and standard mother liquor are molten from mixing
Liquid pool (1) bottom enters mixed solution pond (1), when so preventing that stirrer 73 from rotating, dilution and standard mother liquor is beaten and is flown
On mixed solution pond (1) inner wall, the mixed-precision of solution is influenced.In addition, when having solution in mixed solution pond (1), stirrer
Work is begun to mix test solution, accelerates mixing velocity.The present invention carries out mixing pit, while top using solution from bottom of pond portion
Capping, this structure can reduce the influence of the evaporation of solution, mixing pool wall solution wall built-up phenomenon to precision preparation.Therefore the present invention
When sampling sample introduction, need not stop stirring.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the stereoscopic schematic diagram of solution mixing pit.
Fig. 3 is electromagnetism fixed seat structure schematic diagram.
Fig. 4 is capping structure diagram.
Fig. 5 is the principle schematic of water quality online analyzer self-checking device.
Fig. 6 is the workflow schematic diagram of water quality online analyzer self-checking device.
Fig. 7 is the structure diagram of water quality online analyzer self-checking device.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these examples are merely to illustrate this
It invents rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are various to the present invention's
The modification of equivalent form falls within the application scope as defined in the appended claims.
It is a kind of it is accessible sampling sample introduction agitating device, as shown in Figs 1-4, including solution mixing pit 1, peristaltic pump 6 and
Magnetic stirrer 7, wherein：
The mixed solution pond 1 is included with open major trough body 11, capping 12, and the capping 12 is used to cover in major trough body
In 11 opening, major trough body 11 is closed.Star-like handle nut 121 is provided in the capping 12.The capping 12 and major trough body
The place that 11 opening is in contact is provided with sealing ring.The shape of the inner cavity of the major trough body 11 is infundibulate.The major trough body
11 bottoms are provided with feed pathway 111, detection liquid flow pass 112 and apocenosis passage 113.The apocenosis passage 113 into
Liquid mouth is located at the bottom of 11 inner cavity of major trough body, and the inlet of the feed pathway 111 is higher than detection liquid flow pass 112
Inlet, while the inlet of the apocenosis passage 113 is less than the inlet of detection liquid flow pass 112, the detection liquid stream
Go out passage 112 for connecting inspection by sampling equipment.
The magnetic stirrer 7 includes electromagnet fixed seat 71, electromagnet 72, stirrer 73, the electromagnet fixed seat
71 for electromagnet 72 to be fixed on to the bottom of major trough body 11, and the stirrer 73 is arranged at intracavitary in major trough body 11.
Fixed block hole 711 is provided in the electromagnet fixed seat 71.Drain pipe passes through fixed block hole 711 and drain
Passage 113 connects, and peristaltic pump 6 is provided on the drain pipe.
A kind of stirring means of the agitating device of accessible sampling sample introduction, comprise the following steps：
Step 1, solution to be mixed is injected to 11 inner cavity of major trough body by feed pathway 111.
Step 2, magnetic stirrer 7 is started, stirrer is by the agitation of 11 inner cavity of major trough body.
Step 3, when solution is stirred, the solution being stirred is introduced into analyzer by detecting liquid flow pass 112
In analyzed.
Step 4, after analysis is good, by the effect of peristaltic pump 6, solution is discharged from apocenosis passage 113.
As illustrated in figs. 5-7, by the present invention for the configuration of solution in water quality online analyzer self-checking device, the water
Matter in-line analyzer self-checking device includes host computer, the first control module A, the second control module B, the 3rd control module
C, circuit control panel, mixing pit inlet tube 2, Y-type three way type 3, the first syringe pump 4, the second syringe pump 5, detection liquid pipe and without barrier
Hinder the agitating device of sampling sample introduction, wherein：
The Y-type three way type 3 for two import one outlets pipe fitting, be respectively the first inlet tube, the second inlet tube and
First outlet pipe.Described 2 one end of mixing pit inlet tube is connected with first outlet pipe, and the other end is connected with mixing pit.Described first
One end of outlet tube 42, first go out 44 and first inlet tube of liquid check valve and are sequentially connected, and first outlet tube 42 is another
One end is connected with the port of export of standard mother liquid multi-cavity bottle.One end of second outlet tube 52, second go out liquid check valve 54 and second
Inlet tube is sequentially connected, and the other end of second outlet tube 52 is connected with the port of export of dilution bottle.
First goes out there are two the purposes of the setting of liquid check valve 44, and first is to prevent liquid from flowing back from Y-type three way type 3, another
It is to go out liquid check valve 44 and close mouth to go out liquid check valve 44 less than 4 times first to the distance L that the first inlet tube exports and go out when first
During mouth end pipe footpath r, first, which goes out 44 and first inlet tube of liquid check valve, exports to form turbulence structure, when the first liquid stops to mixed
When closing the inflow of pond inlet tube 2, go out first between the closing mouth of liquid check valve 44 is exported to the first inlet tube and have the first liquid,
It is flowed into when second liquid continues through Y-type three way type 3 in mixing pit inlet tube 2, due between the first inlet tube, the second inlet tube
There are angles so that from the second inlet tube flow out second liquid rush at the first inlet tube outlet, with the first inlet tube export into
Row collision, second liquid after collision form turbulent flow, within and around the outlet of the first inlet tube of agitation, first go out liquid check valve
Solution in 44, and then enter first and go out in liquid check valve 44, when turbulent flow to first, which goes out liquid check valve 44, closes mouth, by
In the stop of closing mouth, turbulent flow returns, and the return of turbulent flow takes the solution that first goes out in liquid check valve 44 out of, and then realizes the
One goes out the exchange of the solution in liquid check valve 44, i.e., going out liquid check valve 44 by first closes mouth between the outlet of the first inlet tube
The first liquid having gradually is diluted by the effect of turbulent flow to be taken out of, the influence that Liquid Residue is avoided to prepare solution, and then is improved
The configuration precision of solution.Similarly understand the second setting purpose for going out liquid check valve 54.
Described first, which goes out liquid check valve 44, closes mouth to the distance L that the first inlet tube exports to go out liquid less than 4 times first unidirectional
44 port of export caliber r of valve, described second, which goes out liquid check valve 54, closes mouth to the distance L that the second inlet tube exports less than 4 times second
Go out 54 port of export caliber r of liquid check valve.First goes out the distance that liquid check valve 44 closes the distance L that mouth is exported to the first inlet tube
It is more short better, distance it is shorter, turbulent flow is bigger, can preferably contradict second go out liquid check valve 54 close mouth at solution.
To be as long as there are angles, best angle between first inlet tube of the guarantee of Y-type three way type 3, the second inlet tube
45 °, using PTEF materials, the Y-type three way type of special angle makes that the connecting line in calibrating installation is as short as possible, dead volume to the greatest extent may be used
It can be small.
The liquid feeding end of first syringe pump 4 by the first inlet tube 41 with standard mother liquid multi-cavity bottle for being connected, and outlet end
It is connected by the first outlet tube 42 with the first inlet tube of Y-type three way type 3, the liquid feeding end of second syringe pump 5 is used for by the
Two inlet tubes 51 are connected with dilution bottle, and outlet end is connected by the second outlet tube 52 with the second inlet tube of Y-type three way type 3.
Check valve use PTEF materials, diaphragm material be fluorubber, latus rectum 2mm, pressure-resistant 0.8mpa.Due to being provided with first
Feed liquor check valve 43, first go out liquid check valve 44, the second feed liquor check valve 53, second go out liquid check valve 54 so that the first injection
The 4, second syringe pump 5 is pumped when extracting test solution, push pipe test solution will not flow back.Simultaneously when the first syringe pump 4 stops injecting,
Second syringe pump 5 is also in injection, due to, there are angle, entering between the first inlet tube, the second inlet tube from the second inlet tube
Dilution can rinse the water export of the first inlet tube under the effect of the pressure, form turbulent flow so that in the first inlet tube
Standard mother liquor in dead volume flows out under the turbulent flow of dilution, avoids first from going out 44 outlet port of liquid check valve
Dead volume is influenced with liquid precision.
The first outlet pipe is connected by mixing pit inlet tube 2 with the feed pathway 11 in mixed solution pond 1.The mixing
Solution pool 1 is included with open major trough body 11, capping 12, and the capping 12 is used to cover the opening in major trough body 11, closing
Major trough body 11 is provided with star-like handle nut 121, the capping 12 and the open place setting being in contact in the capping 12
There is sealing ring.The shape of the hollow groove of the major trough body 11 is infundibulate, be provided on the major trough body 11 feed pathway 111,
Detection liquid flow pass 112 and apocenosis passage 113, the inlet of the apocenosis passage 113 are located at the bottom of hollow groove, and
The inlet of the feed pathway 111 higher than detection liquid flow pass 112 inlet, while the apocenosis passage 113 into
Liquid mouth is less than the inlet of detection liquid flow pass 112, and the detection liquid flow pass 112 is for by detecting liquid pipe and water quality
Analyzer inlet connects.
The present invention is arranged at the bottom of hollow groove using feed pathway 111 so that dilution and standard mother liquor are molten from mixing
1 bottom of liquid pool enters mixed solution pond 1, when so preventing that stirrer 73 from rotating, dilution and standard mother liquor is beaten and fly mixing
On 1 inner wall of solution pool, the mixed-precision of solution is influenced, therefore during the rotation of stirrer 73, liquid and standard mother liquor can be diluted
Injection and the outflow of mixed solution, without influencing mixed-precision.In addition, when having solution in mixed solution pond 1, stirrer
Work is begun to mix test solution, accelerates mixing velocity.The present invention carries out mixing pit, while top using solution from bottom of pond portion
Capping, this structure can reduce the influence of the evaporation of solution, mixing pool wall solution wall built-up phenomenon to precision preparation.
The detection liquid flow pass 112 of the present invention is similarly provided at the bottom of hollow groove, and pipeline is sealed simultaneously in a manner of pressure ring
Connection, this structure can improve solution utilization rate and the stability of pipeline.In addition this structure can also work in stirrer 73
When, it can be sampled from mixed solution pond 1, when avoiding stirrer 73 and being stopped, mixed solution generates depositional phenomenon, influences
To the analysis of Water Test Kits.In addition, from during the detection sampling of liquid flow pass 112, to remove the waste sample of front half section, prevent from examining
The dead volume for survey liquid flow pass 112, detecting in liquid pipe remains, and influences the analysis of Water Test Kits.
The inlet of apocenosis passage 113 is arranged at the bottom of hollow groove, it can be ensured that the abundant discharge of waste liquid.
The magnetic stirrer 7 includes electromagnet fixed seat 71, electromagnet 72, stirrer 73, the electromagnet fixed seat
71 for electromagnet 72 to be fixed on to the bottom of major trough body 11, and the stirrer 73 is arranged in hollow groove.
The present invention is using magnetic stirrer 7, and there are two purposes, and one is to speed up the mixing of solution, and two are to speed up major trough body 11
Drying.When solution mixes, since stirrer 73 rotates under the effect of electromagnet 72, pass through the rotation of stirrer 73 so that
Solution mixes evenly.It when dry, rotated by stirrer 73 and generates wind, the wind of generation is hollow in major trough body 11
Slot rotates, and accelerates the evaporation of solution on 11 inner wall of major trough body, then by the swabbing action of peristaltic pump 6, by humid air from major trough
Body 11 is extracted out, therefore accelerates the drying of major trough body 11, and raffinate is avoided to influence the configuration precision of solution next time.
The first control module A is used for the first control signal sent according to host computer and the first syringe pump 4 is controlled to draw
And push operation, first syringe pump 4 is for drawing standard mother liquid multi-cavity bottle according to first control signal, liquid after absorption
Body is pushed to according to first control signal in mixed solution pond 1.
The second control module B is used for the second control signal sent according to host computer and the second syringe pump 5 is controlled to draw
And push operation, second syringe pump 5 is for drawing dilution bottle according to second control signal, liquid after absorption
It is pushed to according to second control signal in mixed solution pond 1.
The 3rd control signal control peristaltic pump 6 that the 3rd control module C is used to be sent according to host computer is molten to mixing
Liquid pool 1 is aspirated；
The circuit control panel is used for the 4th control signal sent according to host computer control magnetic stirrer 7 and is stirred
It mixes；
The Water Test Kits is used to be detected the liquid come in from detection liquid pipe, and testing result is uploaded to
Position machine；
The host computer is used to control the first control module A, the second control module B, the 3rd control module C and circuit
Plate sends first control signal, second control signal, the 3rd control signal and the 4th control signal；The host computer simultaneously
For receiving the testing result of Water Test Kits, and the water is drawn with the technical indicator of national verification regulation according to testing result
The judgement report of matter analyzer.
A kind of water quality online analyzer calibration method, comprises the following steps：
Step 1, testing staff connects the host computer communication port of the PORT COM of detected Water Test Kits and calibrating installation
It connects, the sampling system of detected Water Test Kits and detection liquid pipe 8 is attached.
Step 2, the standard mother liquid multi-cavity bottle equipped with standard solution mother liquor is connected with the first inlet tube 41；It will be equipped with dilution
Dilution bottle is connected with the second inlet tube 51；Solution concentration input after the concentration of standard solution mother liquor and dilution is supreme
Position machine.
Step 3, host computer calculates according to the solution concentration after the concentration of standard solution mother liquor and dilution and obtains standard solution
The amount of mother liquor and the amount of dilution, and then draw 5 amount of feed of 4 amount of feed of the first syringe pump and the second syringe pump；Host computer according to
First syringe pump, 4 amount of feed sends first control signal to the first control module A, according to 5 amount of feed of the second syringe pump to second
Control module B sends second control signal, and host computer sends the 4th control signal, to the second control module B to circuit control panel
Send the 4th control signal.
Step 4, the first control module A controls the first syringe pump 4 to be drawn from standard mother liquid multi-cavity bottle and marks according to first control signal
Quasi- solution mother liquor；Second control module B controls the second syringe pump 5 to draw dilution from dilution bottle according to second control signal；
Second control module B controls the second syringe pump 5 first to inject dilution to mixed solution pond 1 according to second control signal, then
First control module A controls the first syringe pump 4 to inject standard solution mother liquor to mixed solution pond 1 according to first control signal,
And standard solution mother liquor has at least injected when dilution injection is completed.
Step 5, circuit control panel controls electromagnet 72 to be stirred driving to stirrer 73 according to the 4th control signal, into
And the liquid in mixed solution pond 1 is stirred.
Step 6, after the completion of solution is prepared, computer sends sampling instruction to detected Water Test Kits, is detected water quality
Analyzer carries out sampling operation after receiving instruction to solution in mixed solution pond 1, is detected Water Test Kits by the analysis of water quality
Information is uploaded to host computer；And the analysis work such as the error of indication, null offset, stability of display is carried out, it will divide after the completion of analysis
Data sending is analysed to computer.
Step 7, host computer is analyzed according to the analysis information for being detected Water Test Kits being detected Water Test Kits
The automatic calibration of detection, and judgement report is generated, data result can trace to the source.
Automatic calibration refers to the communications protocol that calibrating installation is provided by water quality online analyzer manufacturing enterprise, realization pair
The instruction transmission of instrument and data receiver, by the way that preset program completes " error of indication " to instrument, " zero point is floated
The detection work of the projects such as shifting ", " stability of display ", calibration item can be adjusted according to by the difference of test examination instrument, be not limited to
Above-mentioned three.It is automatic to refer to after experimenter's selection carries out experiment option, in entire calibration process, without manually more
Change reagent, without manually it is on duty, without manual record data.Whole process is automatically performed by calibrating installation.
The host computer includes the error of indication, null offset, indicating value to the project for being detected Water Test Kits analysis detection
Stability.
The testing process and computational methods (COD) of 7.1 errors of indication
After Water Test Kits stable operation, it is C to import mass concentration successivelySThe COD standards of (50,150,500mg/L)
Solution measures respectively, and continuously measurement 3 times of each solution, the error of indication is calculated as follows：
Wherein, Δ C represents the error of indication,It represents to be detected Water Test Kits measurement of concetration average value, CSAfter representing dilution
Solution concentration.
The testing process and computational methods (COD) of 7.2 null offsets：
After Water Test Kits stable operation, control the first syringe pump 4, the second syringe pump 5 molten to mixing by computer
Liquid pool 1 prepares zero point correction liquid, and prepared zero point correction liquid is imported and is detected Water Test Kits measurement zero point correction liquid,
Record the initial zero value Z of measurement0, a zero point correction liquid is imported to detected Water Test Kits every 30min in 4h, is surveyed
Obtain zero point indicating value Zi, take and deviate Z0Maximum zero point indicating value ZiAs maximum zero point indicating value Zmax, by maximum zero point indicating value ZmaxWith
Initial zero value Z0Difference as null offset.
7.3 show the finger testing process of stability and computational methods (COD)：
After Water Test Kits stable operation, control the first syringe pump 4, the second syringe pump 5 molten to mixing by computer
Liquid pool 1 prepares Standard Calibration Solutions；Prepared Standard Calibration Solutions are imported to detected Water Test Kits, record initial survey
Magnitude S0, continuous operation is for 24 hours；A Standard Calibration Solutions are imported to detected Water Test Kits every 1h interior for 24 hours, are measured
Measured value Si takes the measured value Si for deviateing initial measurement S0 maximums to be calculated as greatest measurement Smax according to the following formula
Stability of display：
Δ S represents stability of display, SmaxRepresent greatest measurement, S0Represent initial measurement.
The error of indication, null offset, stability of display's index are to measure the evaluation index of specification Instrumental metering performance, people
Work evaluate when, need manually it is on duty 40 it is small when and handle data, this calibrating installation is alternative to be manually automatically performed above-mentioned metering performance
Appraisal.
The present invention corresponding various concentration of difference detection project in detection process to same Water Test Kits to be detected
The replacement of detection solution realized by the automatic function equipment of solution of calibrating installation, there is no need to manually replace reagent, together
When the present invention using the detection solution of same device proportioning various concentration, reduce null offset, stability of display and the error of indication
The human error of testing result.
In addition computer or other central processing units may be employed in host computer of the invention, and each function can be by being based onWindowsAnd WinOperating system is realized, transmittable to do sample instruction and receive data, and will be at data
Reason calculate after formed report and can provide Water Test Kits to be detected whether qualification conclusion.
Step 8, after the completion of the detection of some detectable concentration solution, host computer sends the 3rd control to the 3rd control module C
Signal, the 3rd control module C control peristaltic pump to discharge the waste liquid in solution mixing pit, and waste liquid closes peristaltic pump after excluding, into
The preparation of the next detectable concentration point of row；
Before next detectable concentration point is prepared after waste liquid discharge, further include to the cleaning of solution mixing pit and dry, side
Method is as follows：Control architecture B controls the second syringe pump 5 to draw dilution from dilution bottle, is injected into mixed solution pond 1, upper
Machine sends the 4th control signal to circuit control panel, starts magnetic stirrer 7 and mixed solution pond 1 is cleaned, cleaned
Finish, by the 3rd control signal peristaltic pump is controlled to discharge, so cleaning 3 times or more；Finally, controlled by the 3rd control signal
Peristaltic pump is opened, magnetic stirrer 7 is started by the 4th control signal so that stirrer 73 rotates, and then quickly dry mixed
Close solution pool 1.
The solution uncertainty diluted the present invention is based on calibrating installation is less than 3% (k=2), and can by with country
The mode that secondary reference material compares is traced to the source to National primary standard, therefore its Data Data result can trace to the source.
In the present embodiment, the first syringe pump 4 of the invention and the second syringe pump 5 are using constant displacement pump, quantitative pump volume：
10ml, when constant displacement pump specification selects between 5ml, 10ml and 25ml, experiments have shown that rule of the quantitative injection pump using two 10ml
Lattice, operability, the precision highest of solution preparation.Constant displacement pump precision：2uL/ is walked.Constant displacement pump motor speed can be according to actual need
It adjusts, this instrument uses speed as 30 revs/min (adjustable), experiments have shown that the pump push volume accuracy highest under the speed.
Reset mode：Constant displacement pump is mounted with optoelectronic switch in maximum push point (i.e. reset position), first with constant displacement pump before liquid
It resets, to ensure before preparing solution every time, without being full of dilution in remaining liquid, each pipeline in constant displacement pump.
Remaining liquid control in pipeline：In process for preparation, when carrying out constant displacement pump push, pipeline remains that liquid is full of
State, and by program optimization, remain that the push of mother liquor is first completed, the push of dilution finally completes, and ensures pipeline
The liquid being inside full of is always dilution (pure water), improves and prepares repdocutbility, to achieve the purpose that control accuracy.
While efficiency is taken into account, the pipeline of latus rectum 2mm is selected, connecting line overall length is as far as possible short, and caliber is as small as possible, subtracts
Few dead volume.Each component is connected by the polytetrafluoro pipe of high temperature resistant, soda acid, and pipe interface is by the way of pressure ring sealing, therefore
Junction contact area is small, and dead volume is small.Compared with raw material band sealing means, leakproofness is more reliable, and operability is more convenient,
During entirely making sample, this connection mode is completely fixed pipeline, non-loosening phenomenon, reduces detection failure rate.Polytetrafluoro pipe
Size is 2.85*1.25mm.
Calibrating installation matches somebody with somebody liquid, is examined through potassium bichromate solution absorbance, and solution prepares error and is less than ± 2%, whole system
There are system deviations, and repeated property experiment is when host computer generates first control signal and second control signal at this time, middle introducing
System improvement factor K can reduce mechanical liquid mixing system error so that global error is better than ± 1%.
The water quality online analyzer of the present invention is online including being not limited to COD (COD) in-line analyzer, ammonia nitrogen
Analyzer etc. uses water quality parameter point applied to the live non-laboratory of water head site, discharge of industrial wastes mouth, water body environment monitoring point
Analyzer device.
The present invention can one be pushed to field calibration Water Test Kits, the mobility of calibrating installation ensures molten during analysis
Liquid it is now with the current, artificial prepared with traditional compared with solution brings to field assay, it is no longer necessary to consider that low concentration detects solution
Preservation problem and solution prepare site requirements, solution prepare reproducibility higher.
The present invention realizes the Full-automatic calibration to water quality online analyzer, it is unattended according to predetermined criteria or will
(technical specifications such as such as national metrological verification regulations, calibrating standard) are asked, all measuring indexs of water quality online analyzer are carried out
A series of continuous continual analysis tests, gathered data is simultaneously analyzed and processed, and judges whether calibration result meets phase
The index request of pass generates corresponding original calibrated report.The reserved output port with external data communication realizes calibration knot
The long-range acquisition of fruit prepares.Whole process realizes intelligent processing, completely without manual intervention.Meanwhile device possesses automatically
The function of maintenance, being capable of automatic clean and maintenance, lifting device reliability of operation and stabilization in running clearance or holding state
Property.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of agitating device of accessible sampling sample introduction, it is characterised in that：Including solution mixing pit (1), peristaltic pump (6) and
Magnetic stirrer (7), wherein：
The mixed solution pond (1) is included with open major trough body (11), capping (12), and the capping (12) is used for Gai Zhu
In the opening of groove body (11), major trough body (11) is closed；Major trough body (11) bottom is provided with feed pathway (111), detection liquid
Flow pass (112) and apocenosis passage (113)；
The magnetic stirrer (7) includes electromagnet fixed seat (71), electromagnet (72), stirrer (73), and the electromagnet is consolidated
Reservation (71) is used to electromagnet (72) being fixed on the bottom of major trough body (11), and the stirrer (73) is arranged at major trough body
(11) interior intracavitary；
Fixed block hole (711) is provided on the electromagnet fixed seat (71)；Drain pipe passes through fixed block hole (711) and row
Liquid passage (113) connects, and peristaltic pump (6) is provided on the drain pipe.
2. the agitating device of accessible sampling sample introduction according to claim 1, it is characterised in that：It is set on the capping (12)
There is star-like handle nut (121).
3. the agitating device of accessible sampling sample introduction according to claim 1, it is characterised in that：The capping (12) and major trough
The place that the opening of body (11) is in contact is provided with sealing ring.
4. the agitating device of accessible sampling sample introduction according to claim 1, it is characterised in that：The major trough body (11) it is interior
The shape of chamber is infundibulate.
5. the agitating device of accessible sampling sample introduction according to claim 1, it is characterised in that：The apocenosis passage (113)
Inlet be located at the bottom of major trough body (11) inner cavity, and the inlet of the feed pathway (111) go out higher than detection liquid stream it is logical
The inlet in road (112), while the inlet of the apocenosis passage (113) is less than the inlet of detection liquid flow pass (112),
The detection liquid flow pass (112) is used to connect inspection by sampling equipment.
A kind of 6. stirring means of the agitating device based on accessible sampling sample introduction described in claim 1, which is characterized in that bag
Include following steps：
Step 1, solution to be mixed is injected to major trough body (11) inner cavity by feed pathway (111)；
Step 2, magnetic stirrer (7) is started, stirrer is by the agitation of major trough body (11) inner cavity；
Step 3, when solution is stirred, the solution being stirred is introduced into analyzer by detecting liquid flow pass (112)
It is analyzed；
Step 4, after analysis is good, by the effect of peristaltic pump (6), solution is discharged from apocenosis passage (113).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711220366.XA CN108107169A (en) | 2017-11-28 | 2017-11-28 | A kind of agitating device and method of accessible sampling sample introduction |
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| CN201711220366.XA CN108107169A (en) | 2017-11-28 | 2017-11-28 | A kind of agitating device and method of accessible sampling sample introduction |
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ID=62208684
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Application publication date: 20180601 |