CN103033499B - A kind of water quality analytical system - Google Patents
A kind of water quality analytical system Download PDFInfo
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- CN103033499B CN103033499B CN201110295060.7A CN201110295060A CN103033499B CN 103033499 B CN103033499 B CN 103033499B CN 201110295060 A CN201110295060 A CN 201110295060A CN 103033499 B CN103033499 B CN 103033499B
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Abstract
A kind of water quality analytical system, including peristaltic pump, multi-channel direction selecting valve, liquid capacity-fixed pipe, air insulated pipe, reaction detection unit, detector of liquid, some connecting lines and some reagent bottle as fluid driver, described peristaltic pump can fluid in positive and negative bi-directional drive water quality analytical system, described reaction detection unit includes reaction vessel, upper stop valve, lower stop valve, heater, light emission module and opto-electronic receiver modular converter.The public port of multi-channel direction selecting valve, level meter buret, air insulated pipe, reaction checking device and fluid driver are connected in series, system is when feed liquor or discharge opeing, liquid moves the most in the same direction, it is to avoid sequential injection formula flow path system must be by the defect of liquid storage unit transfer liquid.
Description
Technical field
The present invention relates to analytical tool, particularly to a kind of analytical instrument of water quality design.
Background technology
Be currently based on wet chemical analysis has ± 10% the most high-precision special the analytical instrument of water quality of precision, its
Work process generally uses the analysis process of " water sample mix with reagent-react-detect ": instrument the most successively by water sample to be measured and its
His reaction reagent injects reaction vessel, reacts under certain condition after mix homogeneously, finally by colorimetry, titrimetry or
The principles such as electrode method detect, and determine the concentration of water sample index to be measured.
In prior art, the flow path designs of above-mentioned special analytical instrument of water quality can be roughly divided into following three classes: a. multichannel
Discrete feed liquor technology, b. classics Flow Injection Technique, c. sequential injection technology.
Patent ZL200820088159.3 discloses a kind of monitoring water quality on line system based on sequential injection technology, including
Pump, liquid storage unit, reaction-detector unit, multi-channel direction selecting valve and air duct, described multi-channel direction selecting valve has sample introduction and leads to
Road, reagent passage, analysis channel and the public passage connecting described liquid storage unit；Described reaction-detector unit includes light source, anti-
Should-sensing chamber, detector and analytical equipment, one end of described reaction-sensing chamber connects described analysis channel.Figure one shows this
The stream schematic diagram of utility model.
Application for a patent for invention description 2008100662267.8 discloses system described in patent ZL200820088159.3
Feed liquor and analytical procedure:
A. multi-channel direction selecting valve selects feed pathway and reagent passage respectively, the pump public port by multi-channel direction selecting valve
Quantitative water sample and reagent is extracted respectively in liquid storage unit；
B. opening the first valve being connected to reaction-sensing chamber's connection air port, multi-channel direction selecting valve selection analysis leads to
Road, described water sample and reagent are pushed in described reaction-sensing chamber by pump by described public passage；
C. close described first valve, react between water sample and reagent；
D. measure light and pass the product in reaction-sensing chamber, and received；
E. analyze and receive signal, thus obtain the parameter of water sample.
Above-mentioned known design has following deficiency: before being injected into reaction-sensing chamber, water sample, reagent and cleanout fluid are all
Must first be inhaled into transfer in liquid storage unit；Equally, when waste liquid is discharged from reaction-sensing chamber, it is also necessary to through liquid storage
Unit transfer, especially when the liquid volume in reaction-sensing chamber is more than liquid storage unit volume, then needs back and forth to perform more than one
Liquid could all be discharged by secondary transfer operation.These go to step the most complicated time-consuming, and easily in liquid storage unit
Remain liquid film even liquid pearl on wall, affect the certainty of measurement of instrument.
Summary of the invention
In order to solve prior art when feed liquor discharge opeing in go to step complicated time-consuming, and easily at the device of liquid storage unit
Remain liquid film even liquid pearl on wall, cause the problem that Instrument measuring precision is the highest, the invention provides a kind of realization and nothing rotates into
Liquid, takes into account the analytical instrument of water quality design of efficiency, precision and cost simultaneously.
Realization the technical scheme is that a kind of water quality analytical system, including fluid driver 8, multi-channel direction selecting valve
1, some connecting lines and some reagent bottle, described multi-channel direction selecting valve 1 has a public port k and some distribution port a-
F, under control of the control system, described multi-channel direction selecting valve 1 can be by its public port k distribution some with it port a-f
Any one port is connected, it is characterised in that also includes liquid capacity-fixed pipe 2, air insulated pipe 4, include the anti-of reaction vessel 6
Should-detector unit 17 and detector of liquid 3, the reaction vessel 6 of described reaction-detector unit 17 has lower channel opening 12 He
One upper channel mouth 13, the public port k of described multi-channel direction selecting valve 1 is connected with the lower end of described liquid capacity-fixed pipe 2, described
The upper end of liquid capacity-fixed pipe 2 is connected with the lower end of described air insulated pipe 4, the upper end of described air insulated pipe 4 with described instead
Should-detector unit 17 in the lower channel opening 12 of reaction vessel 6 be connected, the upper channel mouth 13 of reaction vessel 6 connects described fluid
Driver 8, the other end connection air of fluid driver 8, described detector of liquid 3 is arranged on described liquid capacity-fixed pipe 2 and institute
Stating air insulated pipe 4 junction, a distribution port a of described multi-channel direction selecting valve 1 connects air, and other distribute port b-f
It is connected with reagent bottle or water sample by connecting line respectively.
As preferably, described fluid driver 8 can fluid in positive and negative bi-directional drive water quality analytical system, work as fluid drives
When device 8 does not works, it functions as normally closed cut-off valve.
As preferably, described liquid capacity-fixed pipe 2 and air insulated pipe 4 are all the pipelines that internal diameter is less than 4 millimeters.
As preferably, it is described that described reaction-detector unit 17 also includes that a lower stop valve 5, described lower stop valve 5 are positioned at
Between air insulated pipe 4 and described reaction vessel 6, the upper end of the lower end connection air insulated pipe 4 of described lower stop valve 5, lower section
The only lower channel opening 12 of the upper end coupled reaction container 6 of valve 5.
As preferably, described reaction-detector unit 17 also includes a upper stop valve 7, and described upper stop valve 7 is positioned at described
Between fluid driver 8 and described reaction vessel 6, the upper channel mouth 13 of the lower end coupled reaction container 6 of upper stop valve 7, upper section
Only the upper end of valve 7 is connected to fluid driver 8.
As preferably, described liquid capacity-fixed pipe 2 and described air insulated pipe 4 can merge into a metering isolated tube 11.
As preferably, described detector of liquid 3 uses non-contact type detector of liquid.
As preferably, the material of described liquid capacity-fixed pipe 2, air insulated pipe 4 or metering isolated tube 11 is fluoroplastics, quartz
Or glass-like materials.
As preferably, described reaction-detector unit 17 also includes that a heater 16, described heater 16 are arranged on
The bottom of reaction vessel 6.
As preferably, the light transmission container that described reaction vessel 6 is quartz or category of glass transparent material is made.
As preferably, cylinder that described reaction vessel 6 gradually closes up for two or elliptical cylinder-shape, its column part internal diameter
Or cylindroid partial interior axial cross section ellipse short shaft is not less than 4 millimeters.
As preferably, described reaction-detector unit 17 also includes a light emission module 9 for colorimetric detection and one
Opto-electronic receiver modular converter 10, described light emission module 9 and opto-electronic receiver modular converter 10 lay respectively at the both sides of reaction vessel 6
And be mutually aligned in light path, by opto-electronic receiver after the main body of solution in the light transmission reaction vessel 6 that light emission module 9 is sent
Modular converter 10 is received and converted to signal of telecommunication output.
As preferably, described multi-channel direction selecting valve 1 connects the A of distribution port a one three way cock 15 of connection of air
End, the B end of three way cock 15 connects described fluid driver 8, the C end connection air of three way cock 15.
Described water quality analytical system uses the described light emission module 9 for colorimetric detection and opto-electronic receiver modular converter 10
The method and steps performing big volume feed liquor is:
1). multi-channel direction selecting valve 1 is switched to need the port of feed liquor, makes the public port k of multi-channel direction selecting valve therewith
It is connected；
2). in fluid driver 8 forward drive reaction vessel 6, the gas of upper end discharges in air, makes reaction hold
Produce negative pressure in device 6, and then the liquid connected by selected feed liquor port sucks, during feed liquor, described lower stop valve 5 He
Upper stop valve 7 remains on, and liquid sequentially passes through multi-channel direction selecting valve 1, liquid capacity-fixed pipe 2 and air insulated pipe 4, finally
Constantly rising after entering reaction vessel 6, liquid forms a concave meniscus 14, when this is recessed due to surface tension in reaction vessel 6
When liquid level 14 rises between described light emission module 9 and opto-electronic receiver modular converter 10, light emission module 9 can be launched
Anaclasis or total reflection, thus the light intensity causing opto-electronic receiver modular converter 10 to be received falls sharply, when light intensity is less than a certain setting
During threshold value, fluid driver 8 work on a setting set time after quit work, simultaneously close off lower stop valve 5, liquid will
Cross a certain level altitude rushing and resting in reaction vessel 6；
3). multi-channel direction selecting valve 1 is switched to air port a, opens lower stop valve 5；
4). in fluid driver 8 forward drive reaction vessel 6, the gas of upper end continues to discharge, in making reaction vessel 6
Produce negative pressure, until the liquid that will be located in multi-channel direction selecting valve 1 and liquid capacity-fixed pipe 2 and air insulated pipe 4 all sucks instead
Answer in container 6；
5). fluid driver 8 quits work, and feed liquor is complete, and because air insulated pipe 4 internal diameter is less than 4 millimeters, liquid can't
Flowing downward out, described lower stop valve 5 is closed after fluid driver 8 quits work.
The step that described water quality analytical system performs small size feed liquor is as follows,
1). multi-channel direction selecting valve 1 is switched to need the port of feed liquor, makes the public port k of multi-channel direction selecting valve 1 therewith
It is connected；
2). in fluid driver 8 forward drive reaction vessel 6, the gas of upper end discharges in air, makes reaction hold
Produce negative pressure in device 6, and then the liquid connected by selected feed liquor port sucks, during feed liquor, described lower stop valve 5 He
Upper stop valve 7 remains on, and liquid sequentially passes through multi-channel direction selecting valve 1 and liquid capacity-fixed pipe 2, when detector of liquid 3 is examined
Measuring liquid to reach detector of liquid 3 position crossing and rushed after one section of fixing mistake rushes volume, fluid driver 8 quits work,
Simultaneously closing off lower stop valve 5, liquid rests on a certain fixed position near detector of liquid 3；
3). multi-channel direction selecting valve 1 is switched to air port a, and lower stop valve 5 is switched to air end at multi-channel direction selecting valve 1
Open after Kou；
4). in fluid driver 8 forward drive reaction vessel 6, the gas of upper end continues to discharge, in making reaction vessel 6
Produce negative pressure, until will be located in the liquid whole sucting reaction container 6 in multi-channel direction selecting valve 1 and liquid capacity-fixed pipe 2；
5). fluid driver 8 quits work, and feed liquor is complete, and because air insulated pipe 4 internal diameter is less than 4 millimeters, liquid can't
Flowing downward out, described lower stop valve 5 is closed after fluid driver 8 quits work；
6). repeat step 1)-5), same or another port liquid can be drawn in reaction vessel.
The step that described water quality analytical system performs discharge opeing is as follows:
1). multi-channel direction selecting valve 1 is switched to bleed port e, makes the public port k of multi-channel direction selecting valve 1 be attached thereto
Logical；
2). described lower stop valve 5 and upper stop valve 7 are in open mode, fluid driver 8 reverse drive reaction vessel 6
Outer air injects reaction vessel 6, produces malleation, and then the liquid in reaction vessel 6 is sequentially passed through sky in making reaction vessel 6
Gas isolated tube 4, liquid capacity-fixed pipe 2, finally discharge from bleed port e of multi-channel direction selecting valve 1, after discharge opeing, and described lower section
Only valve 5 and upper stop valve 7 are closed.
Accompanying drawing explanation
Fig. 1 show in prior art a kind of sequential injection formula water quality analytical system
Fig. 2 show water quality analytical system schematic diagram of the present invention
Detailed description of the invention
Fig. 2 show a kind of water quality analytical system of present invention design, and this system includes the wriggling as fluid driver
If pump 8, multi-channel direction selecting valve 1, liquid capacity-fixed pipe 2, air insulated pipe 4, reaction-detector unit 17, detector of liquid 3 involvement
Adapter road and some reagent bottle.Wherein reaction-detector unit 17 includes reaction vessel 6, upper stop valve 7, lower stop valve 5, heating
Device 16, light emission module 9 and opto-electronic receiver modular converter 10, and reaction vessel 6 has a lower channel opening 12 and one
Upper channel mouth 13；Peristaltic pump 8 can fluid in positive and negative bi-directional drive water quality analytical system, when peristaltic pump 8 does not works, its effect
Be equivalent to normally closed cut-off valve；Multi-channel direction selecting valve 1 has a public port k and some distribution ports (a-f), in control system
Control under, multi-channel direction selecting valve 1 can be by its public port k and any one the port phase in its some distribution ports (a-f)
Even；The public port k of multi-channel direction selecting valve 1 is connected with the lower end of liquid capacity-fixed pipe 2, the upper end of liquid capacity-fixed pipe 2 and air
The lower end of isolated tube 4 is connected, lower stop valve 5 lower end in the upper end coupled reaction-detector unit 17 of air insulated pipe 4, under
The lower channel opening 12 of the upper end coupled reaction container 6 of stop valve 5, the upper channel mouth 13 of reaction vessel 6 connects upper stop valve 7 times
End, the upper end of upper stop valve 7 is connected by one end of pipeline with peristaltic pump 8, the other end connection air of peristaltic pump 8, manifold
One distribution port a of road selection valve 1 connects air, and other distribution port (b-f) are respectively by connecting line and reagent bottle phase
Connect；Described detector of liquid 3 is arranged on liquid capacity-fixed pipe 2 and air insulated pipe 4 junction, when liquid is through liquid capacity-fixed pipe
2 with air insulated pipe 4 junction time, detector of liquid 3 can send signal to control system immediately；Reaction-detector unit 17
Heater 16 is arranged on the bottom of reaction vessel 6.The light emission module 9 of reaction-detector unit 17 and opto-electronic receiver modulus of conversion
Block 10 is separately mounted to the both sides of reaction vessel 6 and is mutually aligned in light path, the light transmission reaction that light emission module 9 is sent
It is received and converted to signal of telecommunication output by opto-electronic receiver modular converter 10 after the main body of solution in container 6.Control system is by surveying
The output valve of the amount signal of telecommunication, conversion obtains the solution absorbance to this transmitting light, thus calculates the dense of composition to be measured in solution
Angle value.
Fluid present invention constant volume tube 2 and air insulated pipe 4 are all the pipelines of internal diameter 1.6 millimeters.
Reaction vessel 6 of the present invention is quartz or the light transmission container made of category of glass transparent material.
The cylinder that reaction vessel 6 of the present invention gradually closes up for two, its column part internal diameter is not less than 4 millimeters.
Fluid present invention constant volume tube 2 and air insulated pipe 4 can merge becomes a metering isolated tube 11.
The material of fluid present invention constant volume tube 2, air insulated pipe 4 or metering isolated tube 11 is fluoroplastics, quartz or glass
Class material.
Fluid present invention detector 3 uses non-contact type detector of liquid.
The A end of distribution port one three way cock 15 of connection of the connection air of multi-channel direction selecting valve 1 of the present invention, described three
The B end described fluid driver of connection of pass joint 15 and peristaltic pump 8 connect the B end of air, the C end connection of described three way cock 15
Air.
The step that water quality analytical system of the present invention performs small size feed liquor is as follows,
1). multi-channel direction selecting valve 1 is switched to need the port of feed liquor, makes the public port k of multi-channel direction selecting valve 1 therewith
It is connected；
2). in fluid driver and peristaltic pump 8 forward drive reaction vessel, the gas of upper end discharges in air, makes
Produce negative pressure in reaction vessel 6, and then the liquid connected by selected feed liquor port sucks, during feed liquor, upper stop valve 7
Remaining on lower stop valve 5, liquid sequentially passes through multi-channel direction selecting valve 1 and liquid capacity-fixed pipe 2, when detector of liquid 3
After detecting that liquid reaches detector of liquid 3 position and one section of fixing mistake of punching rushes volume excessively, fluid driver and peristaltic pump 8 stop
Only work, simultaneously closes off lower stop valve 5, and liquid rests on a certain fixed position near detector of liquid 3；
3). multi-channel direction selecting valve 1 is switched to air port, and lower stop valve 5 is switched to air port at multi-channel direction selecting valve 1
After open；
4). in fluid driver and peristaltic pump 8 forward drive reaction vessel 6, the gas of upper end continues to discharge, and makes anti-
Negative pressure is produced, until the whole sucting reaction of liquid that will be located in multi-channel direction selecting valve 1 and liquid capacity-fixed pipe 2 holds in answering container 6
In device 6；
5). fluid driver and peristaltic pump 8 quit work, and feed liquor is complete, because air insulated pipe 4 internal diameter is less than 4 millimeters, liquid
Body can't flow downward out, and lower stop valve 5 is closed after fluid driver 8 quits work；
6). repeat step 1)-5), same or another port liquid can be drawn in reaction vessel 6.
Crossed by the liquid of the 2nd step in the above-mentioned flow process of regulation and rush volume, the liquid volume needing feed liquor can be adjusted.
Water quality analytical system of the present invention uses light emission module 9 and opto-electronic receiver modular converter 10 for colorimetric detection to enter
The method and steps of the big volume feed liquor of row is:
1). multi-channel direction selecting valve is cut 1 port changing to need feed liquor, makes the public port k of multi-channel direction selecting valve 1 therewith
It is connected；
2). in fluid driver and peristaltic pump 8 forward drive reaction vessel 6, the gas of upper end discharges in air,
Produce negative pressure in making reaction vessel 6, and then the liquid connected by selected feed liquor port sucks, during feed liquor, upper cut-off
Valve 7 and lower stop valve 5 remain on, and liquid sequentially passes through multi-channel direction selecting valve 1, liquid capacity-fixed pipe 2, air insulated pipe 4
With lower stop valve 5, constantly rising after eventually entering into reaction vessel 6, liquid forms one due to surface tension in reaction vessel 6
Concave meniscus, when this concave meniscus rises between described light emission module 9 and opto-electronic receiver modular converter 10, can be by light emission mould
Anaclasis that block 9 is launched or total reflection, thus the light intensity causing opto-electronic receiver modular converter 10 to be received falls sharply, when light intensity is low
After a certain setting threshold value, system waits that liquid is crossed one section of fixing mistake of punching and rushed volume, controls fluid driver and wriggling afterwards
Pump 8 quits work, and simultaneously closes off lower stop valve 5, makes liquid rest on a certain level altitude in reaction vessel 6；
3). multi-channel direction selecting valve 1 is switched to air port, and lower stop valve 5 is switched to air port at multi-channel direction selecting valve 1
After open again；
4). in fluid driver and peristaltic pump 8 forward drive reaction vessel 6, the gas of upper end continues to discharge, and makes anti-
Negative pressure is produced, until will be located in the whole sucting reaction container of the liquid in multi-channel direction selecting valve 1 and metering pipeline 6 in answering container 6
In；
5). fluid driver and peristaltic pump 8 quit work, and feed liquor is complete, because air insulated pipe 4 internal diameter is less than 4 millimeters, liquid
Body can't flow downward out, and lower stop valve 5 is closed after fluid driver 8 quits work.
Crossed by the liquid of the 2nd step in the above-mentioned flow process of regulation and rush volume, the liquid volume needing feed liquor can be adjusted.
The step that the water quality analytical system of the present invention performs discharge opeing is as follows,
1). multi-channel direction selecting valve 1 is switched to bleed port, makes the public port k of multi-channel direction selecting valve 1 be attached thereto
Logical；
2). open the sky outside stop valve 7 and lower stop valve 5, fluid driver and peristaltic pump 8 reverse drive reaction vessel
Gas injects reaction vessel 6, produces malleation, and then the liquid in reaction vessel 6 is sequentially passed through lower stop valve in making reaction vessel 6
5, air insulated pipe 4, liquid capacity-fixed pipe 2, finally discharges from the bleed port of multi-channel direction selecting valve 1, after discharge opeing, described on
Stop valve 7 and lower stop valve 5 are closed.
The water pollution indexs such as COD, ammonia nitrogen, Cr VI in water sample can be examined by water quality analytical system of the present invention respectively
Surveying, in figure two, the connection of water sample and each reagent port is as follows:
● COD:
A port: air port b port: distilled water c port: potassium bichromate solution
D port: concentrated sulphuric acid+silver sulfate solution e port: waste port f port: water sample port
● ammonia nitrogen:
A port: air port b port: distilled water c port: rocchelle's salt solution
D port: nessler reagent developer e port: waste port f port: water sample port
● Cr VI:
A port: air port b port: distilled water c port: mixed acid solution
D port: chromogenic reagent solution e port: waste port f port: water sample port
As a example by measuring ammonia nitrogen, the step of water quality analytical system of the present invention detection is as follows,
1. the liquid in reaction vessel 6 is emptied by leakage fluid dram e.
2. in reaction vessel 6, enter 4 milliliters of water samples first with the operation of large volume feed liquor.
3. 0.5 milliliter of screener rocchelle's salt solution is entered in the operation of recycling small size feed liquor in reaction vessel 6.
4. multi-channel direction selecting valve 1 is switched to air port a, opens stop valve 7 and lower stop valve 5, peristaltic pump 8 forward
Rotate, can be by the air bubble of suction by reagent mix homogeneously.
5., after liquid stands, measure color background voltage now.
6. 0.5 milliliter of developer nessler reagent is entered in the operation of recycling small size feed liquor in reaction vessel 6.
7. multi-channel direction selecting valve 1 is switched to air port a, opens stop valve 7 and lower stop valve 5, peristaltic pump 8 forward
Rotating, can be mixed homogeneously with solution by developer by the air sucked, now mixed liquor starts colour developing.
8., through the fixing colorimetric time, after liquid stands, measure voltage after colorimetric now.
9., by voltage after the color background voltage recorded and colorimetric, it is calculated the concentration of ammonia-nitrogen content in water.
10. reacted solution is discharged reaction vessel 6, go forward side by side distilled water wash reaction vessels 6 and respective line.
The reagent feed liquor quantity of water quality analytical system can be extended by the quantity increasing multi-channel direction selecting valve distribution port,
For example, it is possible to the multi-channel direction selecting valve 1 shown in figure two expands to 10 distribution ports, extra port connects inspection respectively
Survey potassium bichromate solution, concentrated sulfuric acid solution and the COD measuring range adjustment solution etc. required for COD, thus can be in a system
Realize the detection to 2 kinds of water quality monitoring indexs.
The distribution port of unnecessary multi-channel direction selecting valve also can be connected other reaction-detection container, such as based on dripping
Determine the detection container of method.Flow path system design similar flow path system based on sequential injection technology design now.
The present invention compared with prior art, has the advantages that
1., by adding air insulated pipe, utilize liquid to solve in the sucker effect of inner tubule surface tension force, the present invention
Different reagent segmentation feed liquors in the same direction, accurate measurement finally mixed uniformly problem in reaction-detection device.By
Public port, level meter buret, air insulated pipe, reaction-detection device and fluid driver in multi-channel direction selecting valve is string
Row connects, and therefore the present invention is when feed liquor or discharge opeing, liquid moves the most in the same direction, it is to avoid sequential injection
Formula flow path system must be by the defect of liquid storage unit transfer liquid, and feed liquor efficiency improves more than 50%.
The most in the present invention, the colorimetric device in reaction-detection device also serves as the feed liquor gage probe of large volume, not only
Improve disposable feed liquor efficiency, and save the cost installing detector of liquid additional.
3., owing to eliminating liquid storage unit, when decreasing feed liquor, length and the tube wall surface of stream flows through conduit amass, therefore
Decrease liquid on tube wall, remain the probability of liquid film or wall built-up, improve the precision of feed liquor.
The feed liquor mode that water quality analytical system the most of the present invention uses, the feed liquor for small size such as 0.5 milliliter operates, and it enters
Liquid precision can reach 1 microlitre, for utilizing entering of big volume such as 4 milliliters that light emission module and opto-electronic receiver modular converter carry out
Liquid, its feed liquor precision can reach 5 microlitres.
Embodiment disclosed herein is exemplary, and it is merely to explain the present invention, and is not right
The predictable improvement of the restriction of the present invention, this area or technical staff and extension be included in protection scope of the present invention it
In.
Claims (15)
1. a water quality analytical system, including fluid driver (8), multi-channel direction selecting valve (1), some connecting lines and some examinations
Agent bottle, described multi-channel direction selecting valve (1) has a public port (k) and some distribution ports (a-f), in the control of control system
Under system, described multi-channel direction selecting valve (1) can be by any one end in some with it for its public port (k) distribution ports (a-f)
Mouthful be connected, it is characterised in that: also include liquid capacity-fixed pipe (2), air insulated pipe (4), include the reaction of reaction vessel (6)-
Detector unit (17) and detector of liquid (3), the reaction vessel (6) of described reaction-detector unit (17) has a lower channel
Mouth (12) and a upper channel mouth (13), the public port (k) of described multi-channel direction selecting valve (1) and described liquid capacity-fixed pipe (2)
Lower end be connected, the upper end of described liquid capacity-fixed pipe (2) is connected with the lower end of described air insulated pipe (4), described air
The upper end of isolated tube (4) is connected with the lower channel opening (12) of reaction vessel (6) in described reaction-detector unit (17), reaction
The upper channel mouth (13) of container (6) connects described fluid driver (8), the other end connection air of fluid driver (8), described
Detector of liquid (3) is arranged on described liquid capacity-fixed pipe (2) and described air insulated pipe (4) junction, the choosing of described multichannel to
One distribution port (a) connection air of valve (1), other distribution port (b-f) are respectively by connecting line and reagent bottle or water
Sample is connected；Described liquid capacity-fixed pipe (2) and air insulated pipe (4) are all the pipelines that internal diameter is less than 4 millimeters.
Water quality analytical system the most according to claim 1, it is characterised in that: described fluid driver (8) can be positive and negative two-way
Driving the fluid in water quality analytical system, when fluid driver (8) does not works, it functions as normally closed cut-off valve.
Water quality analytical system the most according to claim 1, it is characterised in that: described reaction-detector unit (17) also includes
One lower stop valve (5), described lower stop valve (5) is positioned between described air insulated pipe (4) and described reaction vessel (6), institute
The lower end stating lower stop valve (5) connects the upper end of air insulated pipe (4), upper end coupled reaction container (6) of lower stop valve (5)
Lower channel opening (12).
Water quality analytical system the most according to claim 1, it is characterised in that: described reaction-detector unit (17) also includes
One upper stop valve (7), described upper stop valve (7) is positioned between described fluid driver (8) and described reaction vessel (6), on
The upper channel mouth (13) of lower end coupled reaction container (6) of stop valve (7), the upper end of upper stop valve (7) is connected to fluid drives
Device (8).
Water quality analytical system the most according to claim 1, it is characterised in that: described liquid capacity-fixed pipe (2) and described air
Isolated tube (4) can merge into metering isolated tube (11).
Water quality analytical system the most according to claim 1, it is characterised in that: described detector of liquid (3) uses noncontact
Type detector of liquid.
Water quality analytical system the most according to claim 1 or 5, it is characterised in that: described liquid capacity-fixed pipe (2), air every
Material from pipe (4) or metering isolated tube (11) is fluoroplastics, quartz or glass-like materials.
Water quality analytical system the most according to claim 1, it is characterised in that: described reaction-detector unit (17) also includes
One heater (16), described heater (16) is arranged on the bottom of reaction vessel (6).
Water quality analytical system the most according to claim 1, it is characterised in that: described reaction vessel (6) is quartz or glass
The light transmission container that class transparent material is made.
10. according to the water quality analytical system described in claim 1 or 9, it is characterised in that: described reaction vessel (6) be two by
Tapering cylinder or the elliptical cylinder-shape of mouth, its column part internal diameter or cylindroid partial interior axial cross section ellipse short shaft are not less than
4 millimeters.
11. water quality analytical systems according to claim 1, it is characterised in that: described reaction-detector unit (17) also includes
One for the light emission module (9) of colorimetric detection and an opto-electronic receiver modular converter (10), described light emission module (9) and
Opto-electronic receiver modular converter (10) lays respectively at the both sides of reaction vessel (6) and is mutually aligned in light path, light emission module (9)
It is received and converted to telecommunications by opto-electronic receiver modular converter (10) after the main body of light transmission reaction vessel (6) the interior solution sent
Number output.
12. water quality analytical systems according to claim 1, it is characterised in that: connection sky in described multi-channel direction selecting valve (1)
Distribution port (a) of gas connects the A end of a three way cock (15), and the B end of three way cock (15) connects described fluid driver
(8), the C end connection air of three way cock (15).
13. methods using water quality analytical system detection material, it is characterised in that use the light emission module for colorimetric detection
(9) perform the method and steps of big volume feed liquor with opto-electronic receiver modular converter (10) be:
1). multi-channel direction selecting valve (1) is switched to need the port of feed liquor, makes the public port (k) of multi-channel direction selecting valve therewith
It is connected；
2). in fluid driver (8) forward drive reaction vessel (6), the gas of upper end discharges in air, makes reaction hold
Produce negative pressure in device (6), and then the liquid connected by selected feed liquor port suck, during feed liquor, lower stop valve (5) and
Upper stop valve (7) remains on, and liquid sequentially passes through multi-channel direction selecting valve (1), liquid capacity-fixed pipe (2) and air insulated pipe
(4), eventually entering into reaction vessel (6) and the most constantly rise, liquid forms a recessed liquid due to surface tension in reaction vessel (6)
Face (14), when this concave meniscus (14) rises between described light emission module (9) and opto-electronic receiver modular converter (10), can be by
Anaclasis that light emission module (9) is launched or total reflection, thus cause the light intensity that opto-electronic receiver modular converter (10) received
Fall sharply, when light intensity less than a certain setting threshold value time, fluid driver (8) work on a setting set time after stop work
Making, simultaneously close off lower stop valve (5), liquid rushes crossing and rests on a certain level altitude in reaction vessel (6)；
3). multi-channel direction selecting valve (1) is switched to air port (a), opens lower stop valve (5)；
4). in fluid driver (8) forward drive reaction vessel (6), the gas of upper end continues to discharge, and makes reaction vessel (6)
Interior generation negative pressure, until it is complete to will be located in the liquid in multi-channel direction selecting valve (1) and liquid capacity-fixed pipe (2) and air insulated pipe (4)
In portion's sucting reaction container (6)；
5). fluid driver (8) quits work, and feed liquor is complete, and because air insulated pipe (4) internal diameter is less than 4 millimeters, liquid can't
Flowing downward out, described lower stop valve (5) is closed after fluid driver (8) quits work；
Wherein, described water quality analytical system includes fluid driver (8), multi-channel direction selecting valve (1), some connecting lines and some
Reagent bottle, described multi-channel direction selecting valve (1) has a public port (k) and some distribution ports (a-f), in control system
Under control, described multi-channel direction selecting valve (1) can be by any one in some with it for its public port (k) distribution ports (a-f)
Port is connected, it is characterised in that: also include liquid capacity-fixed pipe (2), air insulated pipe (4), include the anti-of reaction vessel (6)
Should-detector unit (17) and detector of liquid (3), the reaction vessel (6) of described reaction-detector unit (17) has under one and leads to
Road junction (12) and a upper channel mouth (13), the public port (k) of described multi-channel direction selecting valve (1) and described liquid capacity-fixed pipe
(2) lower end is connected, and the upper end of described liquid capacity-fixed pipe (2) is connected with the lower end of described air insulated pipe (4), described sky
The upper end of gas isolated tube (4) is connected, instead with the lower channel opening (12) of reaction vessel (6) in described reaction-detector unit (17)
The upper channel mouth (13) answering container (6) connects described fluid driver (8), the other end connection air of fluid driver (8), institute
Stating detector of liquid (3) and be arranged on described liquid capacity-fixed pipe (2) and described air insulated pipe (4) junction, described multichannel selects
To one of valve (1) distribution port (a) connection air, other distribution port (b-f) respectively by connecting line and reagent bottle or
Water sample is connected；It is described that described reaction-detector unit (17) also includes that a lower stop valve (5), described lower stop valve (5) are positioned at
Between air insulated pipe (4) and described reaction vessel (6), the lower end of described lower stop valve (5) connects the upper of air insulated pipe (4)
End, the lower channel opening (12) of upper end coupled reaction container (6) of lower stop valve (5)；Described reaction-detector unit (17) also includes
One upper stop valve (7), described upper stop valve (7) is positioned between described fluid driver (8) and described reaction vessel (6), on
The upper channel mouth (13) of lower end coupled reaction container (6) of stop valve (7), the upper end of upper stop valve (7) is connected to fluid drives
Device (8)；Described reaction-detector unit (17) also includes that a light emission module for colorimetric detection (9) and a photoelectricity connect
Receiving modular converter (10), described light emission module (9) and opto-electronic receiver modular converter (10) lay respectively at the two of reaction vessel (6)
Side and being mutually aligned in light path, by light after the main body of light transmission reaction vessel (6) the interior solution that light emission module (9) is sent
Electricity receives modular converter (10) and is received and converted to signal of telecommunication output.
14. methods using water quality analytical system detection material, it is characterised in that: the step performing small size feed liquor is as follows,
1). multi-channel direction selecting valve (1) is switched to need the port of feed liquor, make the public port (k) of multi-channel direction selecting valve (1) with
Be connected；
2). in fluid driver (8) forward drive reaction vessel (6), the gas of upper end discharges in air, makes reaction hold
Produce negative pressure in device (6), and then the liquid connected by selected feed liquor port suck, during feed liquor, lower stop valve (5) and
Upper stop valve (7) remains on, and liquid sequentially passes through multi-channel direction selecting valve (1) and liquid capacity-fixed pipe (2), works as liquid detecting
Device (3) detects that liquid reaches detector of liquid (3) position crossing and rushed after one section of fixing mistake rushes volume, fluid driver
(8) quitting work, simultaneously close off lower stop valve (5), liquid rests on a certain fixed position near detector of liquid (3)；
3). multi-channel direction selecting valve (1) is switched to air port (a), and lower stop valve (5) is switched to sky at multi-channel direction selecting valve (1)
Open after gas port；
4). in fluid driver (8) forward drive reaction vessel (6), the gas of upper end continues to discharge, and makes reaction vessel (6)
Interior generation negative pressure, until will be located in the liquid whole sucting reaction container in multi-channel direction selecting valve (1) and liquid capacity-fixed pipe (2)
(6) in；
5). fluid driver (8) quits work, and feed liquor is complete, and because air insulated pipe (4) internal diameter is less than 4 millimeters, liquid can't
Flowing downward out, described lower stop valve (5) is closed after fluid driver (8) quits work；
6). repeat step 1)-5), same or another port liquid can be drawn in reaction vessel；
Wherein, described water quality analytical system includes fluid driver (8), multi-channel direction selecting valve (1), some connecting lines and some
Reagent bottle, described multi-channel direction selecting valve (1) has a public port (k) and some distribution ports (a-f), in control system
Under control, described multi-channel direction selecting valve (1) can be by any one in some with it for its public port (k) distribution ports (a-f)
Port is connected, it is characterised in that: also include liquid capacity-fixed pipe (2), air insulated pipe (4), include the anti-of reaction vessel (6)
Should-detector unit (17) and detector of liquid (3), the reaction vessel (6) of described reaction-detector unit (17) has under one and leads to
Road junction (12) and a upper channel mouth (13), the public port (k) of described multi-channel direction selecting valve (1) and described liquid capacity-fixed pipe
(2) lower end is connected, and the upper end of described liquid capacity-fixed pipe (2) is connected with the lower end of described air insulated pipe (4), described sky
The upper end of gas isolated tube (4) is connected, instead with the lower channel opening (12) of reaction vessel (6) in described reaction-detector unit (17)
The upper channel mouth (13) answering container (6) connects described fluid driver (8), the other end connection air of fluid driver (8), institute
Stating detector of liquid (3) and be arranged on described liquid capacity-fixed pipe (2) and described air insulated pipe (4) junction, described multichannel selects
To one of valve (1) distribution port (a) connection air, other distribution port (b-f) respectively by connecting line and reagent bottle or
Water sample is connected；It is described that described reaction-detector unit (17) also includes that a lower stop valve (5), described lower stop valve (5) are positioned at
Between air insulated pipe (4) and described reaction vessel (6), the lower end of described lower stop valve (5) connects the upper of air insulated pipe (4)
End, the lower channel opening (12) of upper end coupled reaction container (6) of lower stop valve (5)；Described reaction-detector unit (17) also includes
One upper stop valve (7), described upper stop valve (7) is positioned between described fluid driver (8) and described reaction vessel (6), on
The upper channel mouth (13) of lower end coupled reaction container (6) of stop valve (7), the upper end of upper stop valve (7) is connected to fluid drives
Device (8).
15. methods using water quality analytical system detection material, it is characterised in that: described water quality analytical system performs the step of discharge opeing
Rapid as follows:
1). multi-channel direction selecting valve (1) is switched to bleed port (e), makes the public port (k) of multi-channel direction selecting valve (1) therewith
It is connected；
2) under, stop valve (5) and upper stop valve (7) are in open mode, and fluid driver (8) reverse drive reaction vessel (6) is outward
Air inject reaction vessel (6), make to produce in reaction vessel (6) malleation, and then by the liquid warp successively in reaction vessel (6)
Crossing air insulated pipe (4), liquid capacity-fixed pipe (2), finally discharge from the bleed port (e) of multi-channel direction selecting valve (1), discharge opeing is complete
After, described lower stop valve (5) and upper stop valve (7) are closed；
Wherein, described water quality analytical system includes fluid driver (8), multi-channel direction selecting valve (1), some connecting lines and some
Reagent bottle, described multi-channel direction selecting valve (1) has a public port (k) and some distribution ports (a-f), in control system
Under control, described multi-channel direction selecting valve (1) can be by any one in some with it for its public port (k) distribution ports (a-f)
Port is connected, it is characterised in that: also include liquid capacity-fixed pipe (2), air insulated pipe (4), include the anti-of reaction vessel (6)
Should-detector unit (17) and detector of liquid (3), the reaction vessel (6) of described reaction-detector unit (17) has under one and leads to
Road junction (12) and a upper channel mouth (13), the public port (k) of described multi-channel direction selecting valve (1) and described liquid capacity-fixed pipe
(2) lower end is connected, and the upper end of described liquid capacity-fixed pipe (2) is connected with the lower end of described air insulated pipe (4), described sky
The upper end of gas isolated tube (4) is connected, instead with the lower channel opening (12) of reaction vessel (6) in described reaction-detector unit (17)
The upper channel mouth (13) answering container (6) connects described fluid driver (8), the other end connection air of fluid driver (8), institute
Stating detector of liquid (3) and be arranged on described liquid capacity-fixed pipe (2) and described air insulated pipe (4) junction, described multichannel selects
To one of valve (1) distribution port (a) connection air, other distribution port (b-f) respectively by connecting line and reagent bottle or
Water sample is connected；It is described that described reaction-detector unit (17) also includes that a lower stop valve (5), described lower stop valve (5) are positioned at
Between air insulated pipe (4) and described reaction vessel (6), the lower end of described lower stop valve (5) connects the upper of air insulated pipe (4)
End, the lower channel opening (12) of upper end coupled reaction container (6) of lower stop valve (5)；Described reaction-detector unit (17) also includes
One upper stop valve (7), described upper stop valve (7) is positioned between described fluid driver (8) and described reaction vessel (6), on
The upper channel mouth (13) of lower end coupled reaction container (6) of stop valve (7), the upper end of upper stop valve (7) is connected to fluid drives
Device (8).
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104515570A (en) * | 2013-10-08 | 2015-04-15 | 深圳嘉瑞环境技术有限公司 | Liquid level metering device of water quality analyzer |
| CN204044056U (en) * | 2014-04-21 | 2014-12-24 | 赛默飞世尔（上海）仪器有限公司 | For the device of online water quality detection |
| CN105319206B (en) * | 2014-06-11 | 2023-11-10 | 侯文婷 | Water quality purification detection device and water quality purification detection method |
| CN104764860B (en) * | 2015-04-16 | 2017-01-04 | 肖巍 | A kind of analysis metering device and liquid analysis system |
| CN104730216B (en) * | 2015-04-16 | 2016-12-07 | 肖巍 | A kind of analysis metering device and liquid analysis system |
| CN104897582B (en) * | 2015-05-28 | 2018-09-04 | 吉林市吉光科技有限责任公司 | Smell spectrogram instrument and its operating method |
| CN106556533A (en) * | 2015-09-25 | 2017-04-05 | 株式会社岛津制作所 | A kind of method for excluding gas and liquid |
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| CN111122443B (en) * | 2018-10-31 | 2022-07-26 | 天津奇谱光电技术有限公司 | Extensible multifunctional photoelectric liquid testing device |
| CN109856352A (en) * | 2018-12-25 | 2019-06-07 | 河北华厚天成环保技术有限公司 | A kind of water analysis outfit |
| CN214472686U (en) * | 2020-09-24 | 2021-10-22 | 孙成章 | System for quantitatively treating liquid |
| CN112147086B (en) * | 2020-11-06 | 2024-09-17 | 杭州绰美科技有限公司 | Water quality on-line monitoring system capable of configuring measuring process at will |
| CN112697989B (en) * | 2020-12-07 | 2024-07-02 | 赛默飞世尔（上海）仪器有限公司 | Water quality analyzer, liquid taking and delivering method for water quality analyzer and water quality on-line monitoring system |
| CN113413826A (en) * | 2021-05-31 | 2021-09-21 | 深圳市科曼医疗设备有限公司 | Adding device and method |
| CN113588338A (en) * | 2021-07-12 | 2021-11-02 | 桂林云璟科技有限公司 | Sample collection and storage device and flow path for same |
| CN115372280B (en) * | 2022-08-22 | 2024-04-19 | 中南大学 | A spectrum detection device for automatic sampling and sample preparation |
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