CN108144511A - A kind of solution mixing arrangement and mixed method - Google Patents
A kind of solution mixing arrangement and mixed method Download PDFInfo
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- CN108144511A CN108144511A CN201711220298.7A CN201711220298A CN108144511A CN 108144511 A CN108144511 A CN 108144511A CN 201711220298 A CN201711220298 A CN 201711220298A CN 108144511 A CN108144511 A CN 108144511A
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- solution mixing
- mixing pit
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- 238000002156 mixing Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000243 solution Substances 0.000 claims abstract description 126
- 238000010790 dilution Methods 0.000 claims abstract description 45
- 239000012895 dilution Substances 0.000 claims abstract description 45
- 239000012452 mother liquor Substances 0.000 claims abstract description 21
- 239000012086 standard solution Substances 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 117
- 238000001514 detection method Methods 0.000 claims description 25
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 7
- 230000037361 pathway Effects 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
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- 238000003149 assay kit Methods 0.000 description 21
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- 238000012360 testing method Methods 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000002572 peristaltic effect Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 239000012482 calibration solution Substances 0.000 description 3
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- 238000010521 absorption reaction Methods 0.000 description 2
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- 230000008020 evaporation Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004457 water analysis Methods 0.000 description 2
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 1
- 101150054854 POU1F1 gene Proteins 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
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- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
- B01F33/453—Magnetic mixers; Mixers with magnetically driven stirrers using supported or suspended stirring elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7176—Feed mechanisms characterised by the means for feeding the components to the mixer using pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
- B01F35/831—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows
- B01F35/8311—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows with means for controlling the motor driving the pumps or the other dispensing mechanisms
Abstract
The invention discloses a kind of solution mixing arrangement and mixed method, including solution mixing pit (1), mixing pit inlet tube (2), the first syringe pump (4), the first inlet tube (41), the first outlet tube (42), the second syringe pump (5), the second inlet tube (51), the second outlet tube (52), magnetic stirrer (7).The second syringe pump (5) is first controlled to inject dilution to solution mixing pit (1), the first syringe pump (4) is then controlled to inject standard solution mother liquor to solution mixing pit (1).It is finished when standard solution mother liquor injects, continues that the second syringe pump (5) is controlled to inject dilution to solution mixing pit (1).It is finished when solution is injected to solution mixing pit (1), magnetic stirrers (7) is waited to stir evenly solution, close magnetic stirrer (7).The present invention has higher the degree of automation and higher solution mixed-precision.
Description
Technical field
The present invention relates to solution in a kind of solution Mixed Design method more particularly to a kind of Water Test Kits calibrating installation to mix
Close to obtain design.
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 to use the manually metering to online water analysis instrument
Performance is calibrated, and the long time period (generally requiring 36 hours) of artificial detection in-line analyzer.And how water quality is set
The mixing of solution in analyzer calibrating installation is to influence the big factor that calibrating installation solution is prepared.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, it is high that the present invention provides a kind of solution precision preparation
Solution mixing arrangement and mixed method.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：
A kind of solution mixing arrangement, including solution mixing pit (1), mixing pit inlet tube (2), the first syringe pump (4), first
Inlet tube (41), the first outlet tube (42), the second syringe pump (5), the second inlet tube (51), the second outlet tube (52), electromagnetism stir
Device (7) is mixed, wherein：
The liquid feeding end of first syringe pump (4) for being connect by the first inlet tube (41) with standard mother liquid multi-cavity bottle
Liquid end is connected by the first outlet tube (42) with solution mixing pit (1).The liquid feeding end of second syringe pump (5) is used for by the
Two inlet tubes (51) are connect with dilution bottle, and outlet end is connected by the second outlet tube (52) with solution mixing pit (1).It is described
Solution mixing pit (1) is including carrying open major trough body (11), capping (12), and the capping (12) is for covering in major trough body (11)
Opening on, close 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 magnetic stirrer (7) includes electromagnet fixed seat (71), electromagnet (72), stirrer (73), the electromagnetism
Electromagnet (72) for being fixed on the bottom of major trough body (11) by ferropexy seat (71), and the stirrer (73) is set to major trough
Body (11) interior intracavitary.
Further：The pipe fitting of Y-type three way type (3), the Y-type three way type (3) for two import one outlets is further included, respectively
For the first inlet tube, the second inlet tube and first outlet pipe.Described mixing pit inlet tube (2) one end and first outlet Guan Lian
It connects, the other end is connect with solution mixing pit (1).One end of first outlet tube (42), first go out liquid check valve (44) and
First inlet tube is sequentially connected, and the other end of first outlet tube (42) is connect with the port of export of standard mother liquid multi-cavity bottle.It is described
One end of second outlet tube (52), second go out liquid check valve (54) and the second inlet tube is sequentially connected, and described second goes out liquid
The other end of pipe (52) is connect with the port of export of dilution bottle.Connection between first inlet tube and the first outlet tube (42)
Place is provided with the first feed liquor check valve (43) for preventing liquid reflux, the connection of second inlet tube and the second outlet tube (52)
Place is provided with the second feed liquor check valve (53) for preventing liquid reflux.
Preferably：Described first, which goes out liquid check valve (44), closes mouth to the distance L that the first inlet tube exports less than 4 times first
Go out liquid check valve (44) port of export caliber R.Described second goes out the distance L that liquid check valve (54) closing mouth is exported to the second inlet tube
Go out liquid check valve (54) port of export caliber R less than 4 times second.
Preferably：The angle of angle between first inlet tube, the second inlet tube is 45 °.
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)
It is described to detect liquid flow pass (112) for connecting inspection by sampling equipment less than the inlet of detection liquid flow pass (112).
A kind of solution blending methods, include the following steps：
Step 1, start the first syringe pump (4) and draw standard solution mother liquor from standard mother liquid multi-cavity bottle.Start the second syringe pump (5)
Dilution is drawn from dilution bottle, starts magnetic stirrer (7) and is stirred.
Step 2, the second syringe pump (5) is first controlled to inject dilution to solution mixing pit (1), then controls the first injection
(4) are pumped to inject standard solution mother liquor to solution mixing pit (1).
Step 3, it is finished when standard solution mother liquor injects, continues that the second syringe pump (5) is controlled to mix dilution to solution
Pond (1) is injected.
Step 4, it is finished when solution is injected to solution mixing pit (1), magnetic stirrers (7) is waited to stir evenly solution, closed
Close magnetic stirrer (7).
Preferably：Continue the dilution that the second syringe pump (5) is controlled to inject dilution to solution mixing pit (1) in step 3
The amount of liquid at least accounts for 1/5th of the amount of entire dilution.
The present invention compared with prior art, has the advantages that：
The present invention has higher the degree of automation and higher solution mixed-precision.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the principle schematic of water quality online analyzer self-checking device；
Fig. 3 is the workflow schematic diagram of water quality online analyzer self-checking device；
Fig. 4 is the structure diagram of solution mixing pit；
Fig. 5 is the stereoscopic schematic diagram of solution mixing pit；
Fig. 6 is electromagnetism fixed seat structure schematic diagram；
Fig. 7 is capping structure diagram；
Fig. 8 is the structure diagram of threeway.
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 range as defined in the appended claims.
A kind of solution mixing arrangement, as shown in Figure 1, including solution mixing pit (1), mixing pit inlet tube (2), the first injection
Pump (4), the first inlet tube (41), the first outlet tube (42), the second syringe pump (5), the second inlet tube (51), the second outlet tube
(52), magnetic stirrer (7), wherein：
The liquid feeding end of first syringe pump (4) for being connect by the first inlet tube (41) with standard mother liquid multi-cavity bottle
Liquid end is connected by the first outlet tube (42) with solution mixing pit (1).The liquid feeding end of second syringe pump (5) is used for by the
Two inlet tubes (51) are connect with dilution bottle, and outlet end is connected by the second outlet tube (52) with solution mixing pit (1).It is described
Solution mixing pit (1) is including carrying open major trough body (11), capping (12), and the capping (12) is for covering in major trough body (11)
Opening on, close 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 magnetic stirrer (7) includes electromagnet fixed seat (71), electromagnet (72), stirrer (73), the electromagnetism
Electromagnet (72) for being fixed on the bottom of major trough body (11) by ferropexy seat (71), and the stirrer (73) is set to major trough
Body (11) interior intracavitary；The feed pathway (111), detection liquid flow pass (112) and apocenosis passage (113) are positioned at stirrer
(73) lower section.
Further include the pipe fitting of Y-type three way type (3), the Y-type three way type (3) for two import one outlets, respectively first into
Mouth pipe, the second inlet tube and first outlet pipe.Described mixing pit inlet tube (2) one end is connect with first outlet pipe, the other end
It is connect with solution mixing pit (1).One end of first outlet tube (42), first go out liquid check valve (44) and the first inlet tube
It is sequentially connected, and the other end of first outlet tube (42) is connect with the port of export of standard mother liquid multi-cavity bottle.Second outlet tube
(52) one end, second go out liquid check valve (54) and the second inlet tube is sequentially connected, and second outlet tube (52) is another
One end is connect with the port of export of dilution bottle.Junction between first inlet tube and the first outlet tube (42) is provided with anti-
The junction of only the first feed liquor check valve (43) of liquid reflux, second inlet tube and the second outlet tube (52) is provided with anti-
Only the second feed liquor check valve (53) of liquid reflux.
The purpose for setting Y-type three way type (3) mainly reduces the first syringe pump (4), the second syringe pump (5) and solution mixing pit
(1) length of pipe between, i.e. mixing pit inlet tube (2) can be that two pipelines can also be a pipeline, if the first injection
Pump (4), the second syringe pump (5) are connected respectively with two pipelines with solution mixing pit (1), then increase the dead volume in pipeline,
The configuration precision of solution is influenced, therefore two pipelines are merged into a pipeline by the present invention using Y-type three way type (3), are reduced
The length of pipeline thereby reduces the dead volume in pipeline, improves the configuration precision of solution.
First goes out there are two the purposes of liquid check valve (44) setting, and first is to prevent liquid from flowing back from Y-type three way type (3),
It is another to be, when first go out liquid check valve (44) closing mouth go out liquid check valve less than 4 times first to the distance L that the first inlet tube exports
(44) during port of export caliber R, first goes out liquid check valve (44) exports to form turbulence structure with the first inlet tube, when the first liquid stops
When only being flowed into mixing pit inlet tube (2), go out between liquid check valve (44) closing mouth is exported to the first inlet tube first and have
First liquid is flowed into when second liquid continues through Y-type three way type (3) in mixing pit inlet tube (2), due to the first inlet tube, the
There are angles between two inlet tubes so that the second liquid flowed out from the second inlet tube rushes at the outlet of the first inlet tube, with first
Inlet tube outlet is collided, and second liquid after collision forms turbulent flow, within and around the outlet of the first inlet tube of agitation, first
Go out the solution in liquid check valve (44), and then enter first and go out in liquid check valve (44), go out liquid list when turbulent flow is moved to first
When closing mouth to valve (44), due to closing the blocking of mouth, turbulent flow returns, and the return of turbulent flow goes out first in liquid check valve (44)
Solution is taken out of, and then realizes the first exchange for going out the solution in liquid check valve (44), i.e., goes out liquid check valve (44) closing by first
The first liquid that mouth has between being exported to the first inlet tube is gradually diluted by the effect of turbulent flow to be taken out of, avoids Liquid Residue to molten
The influence that liquid is prepared, and then improve the configuration precision of solution.Similarly understand the second setting purpose for going out liquid check valve (54).
Described first goes out liquid check valve (44) closing mouth goes out liquid list to the distance L that the first inlet tube exports less than 4 times first
To valve (44) port of export caliber R, described second, which goes out liquid check valve (54), closes mouth to the distance L that the second inlet tube exports less than 4
Second goes out liquid check valve (54) port of export caliber R again.First go out liquid check valve (44) close mouth to the first inlet tube export away from
More shorter, better with a distance from L, distance is shorter, and turbulent flow is bigger, can preferably contradict second and go out liquid check valve (54) closing
Solution at mouthful.Y-type three way type (3) is as long as ensure that there are angle, best angles between the first inlet tube, the second inlet tube
It it is 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.
Described first goes out liquid check valve (44) closing mouth goes out liquid list to the distance L that the first inlet tube exports less than 4 times first
To valve (44) port of export caliber R.Described second, which goes out liquid check valve (54), closes mouth to the distance L that the second inlet tube exports less than 4
Second goes out liquid check valve (54) port of export caliber R again.First go out liquid check valve (44) close mouth to the first inlet tube export away from
More shorter, better with a distance from L, distance is shorter, and turbulent flow is bigger, can preferably contradict second and go out liquid check valve (54) closing
Solution at mouthful.
The inlet of the apocenosis passage (113) is located at the bottom of major trough body (11) inner cavity, and the feed pathway (111)
Inlet higher than detection liquid flow pass (112) inlet, while the inlet of the apocenosis passage (113) less than detection
The inlet of liquid flow pass (112), it is described to detect liquid flow pass (112) for connecting inspection by sampling equipment.The feed liquor
Channel (111), detection liquid flow pass (112) and apocenosis passage (113) are positioned at the lower section of stirrer (73).Led to using feed liquor
Road (111) is set to the bottom of inner cavity, and positioned at the lower section of stirrer 73 so that dilution and standard mother liquor are from solution mixing pit
(1) bottom enters solution mixing pit (1), when preventing the rotation of stirrer 73 in this way, dilution and standard mother liquor is beaten and is flown in solution
On mixing pit (1) inner wall, the mixed-precision of solution is influenced.In addition, when having solution in solution mixing pit (1), stirrer is just opened
Beginning work accelerates mixing velocity to mix test solution.The present invention carries out mixing pit, while top is capped using solution from bottom of pond portion,
This structure can reduce the influence of the evaporation of solution, mixing pool wall solution wall built-up phenomenon to precision preparation.Therefore when sampling sample introduction,
It does not need to stop stirring.
A kind of solution blending methods, include the following steps：
Step 1, start the first syringe pump (4) and draw standard solution mother liquor from standard mother liquid multi-cavity bottle.Start the second syringe pump (5)
Dilution is drawn from dilution bottle, starts magnetic stirrer (7) and is stirred.
Step 2, the second syringe pump (5) is first controlled to inject dilution to solution mixing pit (1), then controls the first injection
(4) are pumped to inject standard solution mother liquor to solution mixing pit (1).
Step 3, it is finished when standard solution mother liquor injects, continues that the second syringe pump (5) is controlled to mix dilution to solution
Pond (1) is injected.Continue that the second syringe pump (5) is controlled at least to account for dilution to the amount of dilution that solution mixing pit (1) injects
/ 5th of the amount of entire dilution.
Step 4, it is finished when solution is injected to solution mixing pit (1), magnetic stirrers (7) is waited to stir evenly solution, closed
Close magnetic stirrer (7).
As illustrated in figs. 2 through 8, 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 include host computer, the first control module A, the second control module B, third control module C,
Circuit control panel, peristaltic pump (6), magnetic stirrer (7) and solution mixing arrangement, wherein：
The magnetic stirrer (7) includes electromagnet fixed seat (71), electromagnet (72), stirrer (73), the electromagnetism
Ferropexy seat (71) for electromagnet (72) to be fixed on to the bottom of major trough body (11), and the stirrer (73) be set to it is hollow
In slot.The electromagnet fixed seat (71) is provided centrally with fixed block hole (711)；Drain pipe passes through fixed block hole
(711) it is connected with apocenosis passage (113), peristaltic pump (6) is arranged on drain pipe.
The present invention there are two purpose, first, facilitating solution disengaging solution mixing pit 1, is accelerated molten using magnetic stirrer (7)
The mixing of liquid, two are to speed up the drying of major trough body (11).When solution mixes, since stirrer (73) is in electromagnet (72) effect
Lower rotation, passes through the rotation of stirrer (73) so that solution mixes evenly.When dry, rotated by stirrer (73)
Wind is generated, the hollow groove rotation of the wind of generation in major trough body (11) accelerates the evaporation of solution on major trough body (11) inner wall, then
By the swabbing action of peristaltic pump (6), humid air is extracted out, therefore accelerate the drying of major trough body (11) from major trough body (11),
Raffinate is avoided to influence the configuration precision of solution next time.
The first control module A is used to the first syringe pump (4) be controlled to inhale according to the first control signal that host computer is sent out
It takes and push operation, first syringe pump (4) is for drawing standard mother liquid multi-cavity bottle according to first control signal, after absorption
Liquid is pushed to according to first control signal in solution mixing pit (1).
The second control module B is used to the second syringe pump (5) be controlled to inhale according to the second control signal that host computer is sent out
It takes and push operation, second syringe pump (5) is for drawing dilution bottle according to second control signal, liquid after absorption
Body is pushed to according to second control signal in solution mixing pit (1).
The third control module C is used for the third sent out according to host computer control signal control peristaltic pump (6) to solution
Mixing pit (1) is aspirated；
The circuit control panel is used to be stirred according to the 4th control signal control magnetic stirrer (7) that host computer is sent out
It mixes；
The Water Test Kits is used to be detected, and testing result is uploaded the liquid come in from detection liquid pipe (8)
To host computer；
The host computer is used to control the first control module A, the second control module B, third control module C and circuit
Plate sends out first control signal, second control signal, third control signal and the 4th control signal；The host computer is used simultaneously
In the testing result for receiving Water Test Kits, and the water quality point is obtained with the technical indicator of national verification regulation according to testing result
The judgement report of analyzer.
A kind of water quality online analyzer calibration method, includes 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)；Dilution will be housed
Dilution bottle connected with the second inlet tube (51)；Solution concentration after the concentration of standard solution mother liquor and dilution is input to
Host computer.
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 obtain the first syringe pump (4) amount of feed and the second syringe pump (5) amount of feed；Host computer
First control signal is sent out to the first control module A according to the first syringe pump (4) amount of feed, is fed according to the second syringe pump (5)
It measures to the second control module B and sends out second control signal, host computer sends out the 4th control signal to circuit control panel, controlled to second
Molding block B sends out 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 according to first control signal
Standard solution mother liquor；Second control module B controls the second syringe pump (5) to draw dilution from dilution bottle according to second control signal
Liquid；Second control module B controls the second syringe pump (5) first to note dilution to solution mixing pit (1) according to second control signal
Enter, then the first control module A controls the first syringe pump (4) to mix standard solution mother liquor to solution according to first control signal
Pond (1) is injected, and standard solution mother liquor has at least injected when dilution injection is completed.
Step 5, circuit control panel is stirred drive according to the 4th control signal control electromagnet (72) to stirrer (73)
It is dynamic, and then the liquid in solution mixing pit (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 solution mixing pit (1), is detected Water Test Kits by point of water quality
Analysis 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 after the completion of analysis
Analysis data are sent 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 preset program complete to " error of indication " of instrument, " null offset ",
The detection work of projects such as " 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 replacing examination
Agent, without it is artificial 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, each solution continuously measures 3 times, and 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, after Cs represents dilution
Solution concentration.
The testing process and computational methods (COD) of 7.2 null offsets：
After Water Test Kits stable operation, the first syringe pump (4), the second syringe pump (5) are controlled to molten by computer
Liquid mixing pit (1) prepares zero point correction liquid, and prepared zero point correction liquid is imported and is detected Water Test Kits measurement zero school
Quasi- liquid records the initial zero value Z of measurement0, in 4h a zero point correction is imported to detected Water Test Kits every 30min
Liquid measures zero indicating value Zi, take and deviate Z0Maximum zero indicating value ZiAs maximum zero indicating value Zmax, by maximum zero 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, the first syringe pump (4), the second syringe pump (5) are controlled to molten by computer
Liquid mixing pit (1) prepares Standard Calibration Solutions；Prepared Standard Calibration Solutions are imported to detected Water Test Kits, record is just
Beginning measured value 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 surveyed
Measured value Si is obtained, the measured value Si for deviateing initial measurement S0 maximums is taken as greatest measurement Smax, according to the following formula meter
Calculate 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
When work is evaluated, need artificial 40 hours on duty 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 used 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 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 out third control to third control module C
Signal, third 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 solution mixing pit (1),
Host computer sends out the 4th control signal to circuit control panel, starts magnetic stirrer (7) and solution mixing pit (1) is cleaned,
Cleaning finishes, and controls signal that peristaltic pump is controlled to discharge by third, so cleaning 3 times or more；Finally, signal is controlled by third
Peristaltic pump is opened in control, passes through the 4th control signal enabling magnetic stirrer (7) so that stirrer (73) rotates, and then quick
Drying solution mixing pit (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, the quantitative pump housing
Product：10ml, when constant displacement pump specification selects between 5ml, 10ml and 25ml, experiments have shown that quantitative injection pump is using two 10ml's
Specification, operability, the precision highest of solution preparation.Constant displacement pump precision：2uL/ is walked.Constant displacement pump motor speed can be according to practical 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 short as possible, 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, whole
It is a make sample during, this connection mode is completely fixed pipeline, non-loosening phenomenon, reduce detection failure rate.Polytetrafluoro pipe ruler
Very little is 2.85*1.25mm.
Calibrating installation matches 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 compared with solution brings to field assay with traditional, 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 result
Long-range acquisition prepare.Whole process realizes intelligent processing, completely without manual intervention.Meanwhile device has automatic dimension
The function of guarantor, being capable of automatic clean and maintenance, lifting device reliability of operation and stability in running clearance or standby mode.
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 also should
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of solution mixing arrangement, it is characterised in that：Including solution mixing pit (1), mixing pit inlet tube (2), the first injection
Pump (4), the first inlet tube (41), the first outlet tube (42), the second syringe pump (5), the second inlet tube (51), the second outlet tube
(52), magnetic stirrer (7), wherein：
The liquid feeding end of first syringe pump (4) by the first inlet tube (41) with standard mother liquid multi-cavity bottle for being connect, and outlet end
It is connected by the first outlet tube (42) with solution mixing pit (1)；The liquid feeding end of second syringe pump (5) be used for by second into
Liquid pipe (51) is connect with dilution bottle, and outlet end is connected by the second outlet tube (52) with solution mixing pit (1)；The solution
Mixing pit (1) is including carrying open major trough body (11), capping (12), and the capping (12) is for covering in the spacious of major trough body (11)
On mouth, 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
Electromagnet (72) for being fixed on the bottom of major trough body (11) by reservation (71), and the stirrer (73) is set to major trough body
(11) interior intracavitary.
2. solution mixing arrangement according to claim 1, it is characterised in that：Further include Y-type three way type (3), the Y-type three way type
(3) pipe fitting for two import one outlets, respectively the first inlet tube, the second inlet tube and first outlet pipe；It is described mixed
It closes pond inlet tube (2) one end to connect with first outlet pipe, the other end is connect with solution mixing pit (1)；First outlet tube
(42) one end, first go out liquid check valve (44) and the first inlet tube is sequentially connected, and first outlet tube (42) is another
One end is connect 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 connect with the port of export of dilution bottle；Described
Junction between one inlet tube and the first outlet tube (42) is provided with the first feed liquor check valve (43) for preventing liquid reflux, institute
The junction for stating the second inlet tube and the second outlet tube (52) is provided with the second feed liquor check valve (53) for preventing liquid reflux.
3. solution mixing arrangement according to claim 2, it is characterised in that：Described first, which goes out liquid check valve (44) closing mouth, arrives
The distance L of first inlet tube outlet goes out liquid check valve (44) port of export caliber R less than 4 times first；Described second goes out liquid check valve
(54) closing mouth goes out liquid check valve (54) port of export caliber R to the distance L that the second inlet tube exports less than 4 times second.
4. solution mixing arrangement according to claim 2, it is characterised in that：Between first inlet tube, the second inlet tube
Angle angle be 45 °.
5. solution mixing arrangement according to claim 1, it is characterised in that：The inlet of the apocenosis passage (113) is located at
The bottom of major trough body (11) inner cavity, and the inlet of the feed pathway (111) is higher than the feed liquor of detection liquid flow pass (112)
Mouthful, 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 channel (112) for connecting inspection by sampling equipment.
6. a kind of mixed method based on any solution mixing arrangement of claim 1 to 5, which is characterized in that including with
Lower step：
Step 1, start the first syringe pump (4) and draw standard solution mother liquor from standard mother liquid multi-cavity bottle；Start the second syringe pump (5) from dilute
It releases liquid bottle and draws dilution, start magnetic stirrer (7) and be stirred；
Step 2, the second syringe pump (5) is first controlled to inject dilution to solution mixing pit (1), then controls the first syringe pump
(4) standard solution mother liquor is injected to solution mixing pit (1)；
Step 3, when the injection of standard solution mother liquor finishes, continue to control the second syringe pump (5) by dilution to solution mixing pit (1)
Injection；
Step 4, it is finished when solution is injected to solution mixing pit (1), magnetic stirrers (7) is waited to stir evenly solution, close electricity
Magnetic stirrer (7).
7. mixed method according to claim 6, it is characterised in that：Continue to control the second syringe pump (5) that will dilute in step 3
The amount for the dilution that liquid is injected to solution mixing pit (1) at least accounts for 1/5th of the amount of entire dilution.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108982382A (en) * | 2018-07-17 | 2018-12-11 | 厦门市计量检定测试院 | A kind of calibration method of online total chromium analysis instrument |
| CN110187722A (en) * | 2019-05-20 | 2019-08-30 | 南京感控通化工产品经营部 | The control method and injecting systems of a kind of drug dose calibrating installation, the device |
| CN111111481A (en) * | 2020-01-19 | 2020-05-08 | 防灾科技学院 | Manufacturing system and method for trace dissolved ternary mixed gas standard solution |
| CN111487115A (en) * | 2020-03-26 | 2020-08-04 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Pneumatic solution dilution and distribution device |
| CN112557455A (en) * | 2020-12-23 | 2021-03-26 | 上海大学 | Full-automatic conductivity calibration system for ocean detection sensor and application method thereof |
| CN112871000A (en) * | 2019-11-29 | 2021-06-01 | 深圳迈瑞生物医疗电子股份有限公司 | Dye mixed liquid configuration method and computer storage medium |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108982382A (en) * | 2018-07-17 | 2018-12-11 | 厦门市计量检定测试院 | A kind of calibration method of online total chromium analysis instrument |
| CN108982382B (en) * | 2018-07-17 | 2021-05-18 | 厦门市计量检定测试院 | Calibration method of on-line total chromium analyzer |
| CN110187722A (en) * | 2019-05-20 | 2019-08-30 | 南京感控通化工产品经营部 | The control method and injecting systems of a kind of drug dose calibrating installation, the device |
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| CN112871000A (en) * | 2019-11-29 | 2021-06-01 | 深圳迈瑞生物医疗电子股份有限公司 | Dye mixed liquid configuration method and computer storage medium |
| CN111111481A (en) * | 2020-01-19 | 2020-05-08 | 防灾科技学院 | Manufacturing system and method for trace dissolved ternary mixed gas standard solution |
| CN111111481B (en) * | 2020-01-19 | 2024-01-23 | 防灾科技学院 | System and method for manufacturing trace dissolved ternary mixed gas standard solution |
| CN111487115A (en) * | 2020-03-26 | 2020-08-04 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Pneumatic solution dilution and distribution device |
| CN111487115B (en) * | 2020-03-26 | 2021-03-26 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Pneumatic solution dilution and distribution device |
| CN112557455A (en) * | 2020-12-23 | 2021-03-26 | 上海大学 | Full-automatic conductivity calibration system for ocean detection sensor and application method thereof |
| CN112557455B (en) * | 2020-12-23 | 2022-01-28 | 上海大学 | Full-automatic conductivity calibration system for ocean detection sensor and application method thereof |
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