CN109270284A - Quantitative sample injection and cleaning system - Google Patents
Quantitative sample injection and cleaning system Download PDFInfo
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- CN109270284A CN109270284A CN201811209644.6A CN201811209644A CN109270284A CN 109270284 A CN109270284 A CN 109270284A CN 201811209644 A CN201811209644 A CN 201811209644A CN 109270284 A CN109270284 A CN 109270284A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 102
- 238000002347 injection Methods 0.000 title claims abstract description 51
- 239000007924 injection Substances 0.000 title claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 89
- 230000008676 import Effects 0.000 claims abstract description 31
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 31
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 13
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 13
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- 229920002313 fluoropolymer Polymers 0.000 claims description 4
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims description 3
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims description 3
- 125000005009 perfluoropropyl group Chemical group FC(C(C(F)(F)F)(F)F)(F)* 0.000 claims description 3
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 2
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 238000011002 quantification Methods 0.000 abstract description 16
- 239000003153 chemical reaction reagent Substances 0.000 description 19
- 239000000243 solution Substances 0.000 description 15
- 239000002699 waste material Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1004—Cleaning sample transfer devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses quantitative sample injections and cleaning system.The system includes: multi-pass valve group, and the multi-pass valve group includes first import and export, second import and export and multiple disengaging branch mouths；Quantity tube, the quantity tube are connected with the first import and export；First solenoid valve and second solenoid valve, first solenoid valve are connected with the quantity tube, and the second solenoid valve is connected with first solenoid valve, and are provided with peristaltic pump between first solenoid valve and the second solenoid valve；Detector, the detector are arranged between first solenoid valve and the peristaltic pump；Wherein, the second import and export and the second solenoid valve are connected with to sample introduction or the liquid container of cleaning.The system quickly and efficiently can carry out accurate quantification sample introduction and cleaning to liquid container.
Description
Technical field
The present invention relates to instrument analysis fields, specifically, the present invention relates to quantitative sample injections and cleaning system.
Background technique
Ingredient of the liquid light splitting degree colorimetric automatic measurement technique in fields such as biology, chemical industry, food, medicine, environmental industries
It has a wide range of applications in detection.Using spectrophotometer as predominantly detecting equipment in the technology, and in the prior art for point
The quantitative sample injection of reaction colorimetric pool in light photometer and cleaning, what is mostly used is that glass tube photoelectricity is quantitative or plunger pump quantitative square
Formula.It is at high cost that both the above mode haves the shortcomings that quantitative accuracy is low or structure is complicated, and when colorimetric pool is reacted in cleaning, due to
Glass tube or plunger pump volume are smaller, need to inject cleaning solution in colorimetric pool several times, again several times by colorimetric after the completion of cleaning
Cleaning solution extraction in pond, cleaning efficiency is low, and power device longevity of service leads to the reduction of its service life.
Thus, the existing means for carrying out quantitative sample injection and cleaning to liquid container still have much room for improvement.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose quantitative sample injection and cleaning system.The system can quickly and efficiently to liquid container carry out accurate quantification into
Sample and cleaning.
In one aspect of the invention, the present invention proposes a kind of quantitative sample injection and cleaning system.It is according to the present invention
Embodiment, the quantitative sample injection and cleaning system include: multi-pass valve group, and the multi-pass valve group includes first import and export, the second disengaging
Mouth and multiple disengaging branch mouths；Quantity tube, the quantity tube are connected with the first import and export；First solenoid valve and the second electromagnetism
Valve, first solenoid valve are connected with the quantity tube, and the second solenoid valve is connected with first solenoid valve, and described
Peristaltic pump is provided between one solenoid valve and the second solenoid valve；Detector, the detector are arranged in first electromagnetism
Between valve and the peristaltic pump；Wherein, the second import and export and the second solenoid valve are held with to sample introduction or the liquid of cleaning
Device is connected.
It is accurately fixed that quantitative sample injection and cleaning system according to an embodiment of the present invention can quickly and efficiently carry out liquid container
Measure sample introduction and cleaning.Specifically, accurate quantification sample introduction can be by operating realization as follows: the disengaging branch mouth in multi-pass valve group is connected to
To sample introduction reagent, peristaltic pump is opened by the pipeline being pumped between peristaltic pump and the first solenoid valve to sample introduction reagent, passes through inspection
The collaborative work for surveying device and quantity tube treats sample introduction reagent and carries out accurate quantification, so control peristaltic pump will it is quantitative after reagent warp
By completing the accurate quantification sample introduction of liquid container in the second import and export indentation liquid container of multi-pass valve group.To liquid container
Rapid Cleaning can be by operating realization as follows: the disengaging branch mouth in multi-pass valve group being connected to cleaning solution, opening peristaltic pump will be to
Air extraction in cleaning liquid container, it is to be cleaned to continuously enter cleaning solution via the second import and export of multi-pass valve group
Liquid container；After the completion of cleaning, control peristaltic pump is pressed into air into liquid container, so as to the continuous discharge liquor of waste liquid after cleaning
Body container completes the high-efficiency washing of liquid container.Quantitative sample injection of the invention and cleaning system can be quickly and efficiently to liquid as a result,
Body container carries out accurate quantification sample introduction and cleaning.
In addition, quantitative sample injection according to the above embodiment of the present invention and cleaning system can also have following additional technology
Feature:
In some embodiments of the invention, the liquid container is that spectrophotometer reacts colorimetric pool, the reaction
The both ends of colorimetric pool are respectively arranged with the first opening and the second opening, first opening and described the second of the multi-pass valve group
Inlet and outlet are connected, and second opening is connected with the second solenoid valve.Quantitative sample injection of the invention and cleaning system can as a result,
For the design feature of reaction colorimetric pool, efficient accurate quantification sample introduction and cleaning are carried out to it.
In some embodiments of the invention, the quantitative sample injection and cleaning system further comprise: third solenoid valve and
4th solenoid valve, the third solenoid valve setting is between first opening and the second import and export, the 4th electromagnetism
Valve setting is between second opening and the second solenoid valve.It can further improve as a result, and essence carried out to reaction colorimetric pool
The efficiency of true quantitative sample injection and high-efficiency washing.
In some embodiments of the invention, the quantitative sample injection and cleaning system further comprise: the first fixing seat and
First opening of the reaction colorimetric pool is arranged in second fixing seat, first fixing seat；Second fixing seat
Second opening of the reaction colorimetric pool is set.
In some embodiments of the invention, the third solenoid valve and the 4th solenoid valve are normally closed solenoid valve.
In some embodiments of the invention, first solenoid valve and the second solenoid valve are two-position three-way electromagnetic
Valve.
In some embodiments of the invention, first solenoid valve, the second solenoid valve are connected with liquid trap, at least
One disengaging branch mouth is connected with liquid trap.It as a result, can be further convenient for the accurate quantification sample introduction of liquid container and efficiently
Cleaning.
In some embodiments of the invention, the quantity tube is copolymerized by polytetrafluoroethylene (PTFE) (PTFE), fluorinated ethylene propylene
The formation of at least one of copolymer (PFA) of object (FEP) and perfluoro propyl perfluoroalkyl vinyl ether polytetrafluoroethylene (PTFE).
In some embodiments of the invention, the internal diameter of the quantity tube is 0.3~2mm.It is fixed to can further improve as a result,
Measure the accuracy of sample introduction.
In some embodiments of the invention, first fixing seat and second fixing seat are formed by fluoroplastics.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of quantitative sample injection and cleaning system according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of the quantitative sample injection and cleaning system of further embodiment according to the present invention；
Fig. 3 is the structural schematic diagram of the quantitative sample injection and cleaning system of another embodiment according to the present invention；
Fig. 4 is the structural schematic diagram of the quantitative sample injection and cleaning system of another embodiment according to the present invention；
Fig. 5 is the structural schematic diagram of the quantitative sample injection and cleaning system of another embodiment according to the present invention；
Fig. 6 is to carry out quantitative sample injection to reaction colorimetric pool using the quantitative sample injection and cleaning system of one embodiment of the invention
Process schematic；
Fig. 7 is the mistake cleaned using the quantitative sample injection and cleaning system of one embodiment of the invention to reaction colorimetric pool
Journey schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In addition, term " first ", " second ", " third ", " the 4th " are used for description purposes only, and should not be understood as instruction or
It implies relative importance or implicitly indicates the quantity of indicated technical characteristic.The spy of " first ", " second " is defined as a result,
Sign can explicitly or implicitly include at least one of the features.In the description of the present invention, the meaning of " plurality " is at least two
It is a, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, the terms such as " installation ", " connected ", " connection ", " fixation "
It shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection,
It is also possible to be electrically connected；It can be directly connected, can also can be inside two elements indirectly connected through an intermediary
The interaction relationship of connection or two elements, unless otherwise restricted clearly.For the ordinary skill in the art,
The specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In one aspect of the invention, the invention proposes a kind of quantitative sample injection and cleaning systems.Reality according to the present invention
Example is applied, with reference to Fig. 1, the quantitative sample injection and cleaning system include: multi-pass valve group 100, quantity tube 200, the first solenoid valve 300,
Two solenoid valves 400, peristaltic pump 500 and detector 600；Wherein, multi-pass valve group 100 includes first import and export 101, second import and export
102 and multiple disengaging branch mouths 103；Quantity tube 200 is connected with first import and export 101；First solenoid valve 300 and 200 phase of quantity tube
Even, second solenoid valve 400 is connected with the first solenoid valve 300, and is provided between the first solenoid valve 300 and second solenoid valve 500
Peristaltic pump 500；Detector 600 is arranged between the first solenoid valve 300 and peristaltic pump 500；Second import and export 102 and the second electromagnetism
Valve 400 is connected with to sample introduction or the liquid container of cleaning 700.
It is accurately fixed that quantitative sample injection and cleaning system according to an embodiment of the present invention can quickly and efficiently carry out liquid container
Measure sample introduction and cleaning.Specifically, accurate quantification sample introduction can be by operating realization as follows: the disengaging branch mouth in multi-pass valve group is connected to
To sample introduction reagent, peristaltic pump is opened by the pipeline being pumped between peristaltic pump and the first solenoid valve to sample introduction reagent, passes through inspection
The collaborative work for surveying device and quantity tube treats sample introduction reagent and carries out accurate quantification, so control peristaltic pump will it is quantitative after reagent warp
By completing the accurate quantification sample introduction of liquid container in the second import and export indentation liquid container of multi-pass valve group.To liquid container
Rapid Cleaning can be by operating realization as follows: the disengaging branch mouth in multi-pass valve group being connected to cleaning solution, opening peristaltic pump will be to
Air extraction in cleaning liquid container, it is to be cleaned to continuously enter cleaning solution via the second import and export of multi-pass valve group
Liquid container；After the completion of cleaning, control peristaltic pump is pressed into air into liquid container, so as to the continuous discharge liquor of waste liquid after cleaning
Body container completes the high-efficiency washing of liquid container.Quantitative sample injection of the invention and cleaning system can be quickly and efficiently to liquid as a result,
Body container carries out accurate quantification sample introduction and cleaning.
It is retouched in detail further below with reference to Fig. 1~5 pair quantitative sample injection according to an embodiment of the present invention and cleaning system
It states:
According to an embodiment of the invention, quantitative sample injection and cleaning system of the invention are suitable for carrying out various liquid containers
Quantitative sample injection and cleaning are not particularly limited the specific type of liquid container, as long as can pass through 102 He of second import and export
In 400 access system of second solenoid valve.
According to an embodiment of the invention, each disengaging branch mouth 103 in multi-pass valve group 100 can be respectively connected to sample introduction
The collection device of waste liquid after reagent, cleaning solution or cleaning.Settable electricity at each disengaging branch mouth 103 and first import and export 101
Magnet valve opens or closes in order to control disengaging branch mouth and first import and export.
According to a particular embodiment of the invention, liquid container can react colorimetric pool for spectrophotometer, such as Fig. 2 institute
Show, the both ends for reacting colorimetric pool are respectively arranged with the first opening 701 and the second opening 702, quantify to reaction colorimetric pool
When sample introduction or cleaning, the first opening 701 is connected with the second import and export 102 of multi-pass valve group 100, the second opening 702 and the second electricity
Magnet valve 400 is connected.Inventor is having found spectrophotometer in the research of reaction colorimetric pool quantitative sample injection and cleaning method, existing
There are the mode contrastive colours pond progress quantitative sample injection and cleaning for generalling use that glass tube photoelectricity is quantitative or plunger pump is quantitative in technology, with
It is at high cost that upper two ways haves the shortcomings that quantitative accuracy is low or structure is complicated, and when colorimetric pool is reacted in cleaning, due to glass
Pipe or plunger pump volume are smaller, need to inject cleaning solution in colorimetric pool several times, again several times will be in colorimetric pool after the completion of cleaning
Cleaning solution extraction, cleaning efficiency is low, and power device longevity of service cause its service life reduction.In turn, inventor is logical
It crosses in experimental study and finds, reaction colorimetric pool has the design feature of both ends open, by the both ends open that will react colorimetric pool
It is respectively connected to second import and export 102 and second solenoid valve 400, is held very much using quantitative sample injection proposed by the present invention and cleaning system
It easily realizes the accurate quantification sample introduction and high-efficiency washing of reaction colorimetric pool, reaction colorimetric pool is carried out in the prior art to solve
The problems such as quantitative sample injection is low with cleaning quantitative accuracy, at high cost, low efficiency.
According to an embodiment of the invention, quantitative sample injection and cleaning system of the invention further comprises third solenoid valve 810
With the 4th solenoid valve 820, third solenoid valve 810 is arranged in second import and export 102 and between sample introduction or the liquid container of cleaning,
4th solenoid valve 820 is arranged in second solenoid valve 400 and between sample introduction or the liquid container of cleaning.By the way that third electromagnetism is arranged
Valve 810 and the 4th solenoid valve 820 can be convenient efficiently through the opening of control third solenoid valve 810 and the 4th solenoid valve 820
Or close the operation for carrying out control system.According to a particular embodiment of the invention, as shown in figure 3, when using system pair of the invention
When reacting colorimetric pool progress quantitative sample injection and cleaning, third solenoid valve 810 may be provided at the first opening 701 and second import and export
Between 102, the 4th solenoid valve 820 be may be provided between the second opening 702 and second solenoid valve 400.
Specifically, when using the system of the invention quantitative sample injection in liquid container (such as reaction colorimetric pool), electromagnetism
Valve 810 is closed, and the disengaging branch mouth 103 in multi-pass valve group 100 is connected to sample introduction reagent, open peristaltic pump 500 will into
Sample reagent is pumped into the pipeline between peristaltic pump 500 and the first solenoid valve 300, at this point, third solenoid valve 810, which is in, closes shape
State, the work of peristaltic pump 500 will not have an impact the air pressure in liquid container, be wriggled and be pumped into pipeline simultaneously to sample introduction reagent
After detector 600 and quantity tube 200 carry out accurate quantification, third solenoid valve 810 is opened, will be to sample introduction using peristaltic pump 500
Reagent is pressed into liquid container.When being cleaned using system of the invention to liquid container, third solenoid valve 810 and the 4th
Solenoid valve 820 is opened, and the disengaging branch mouth 103 in multi-pass valve group 100 is connected to cleaning solution, opens peristaltic pump 500, to be cleaned
Air in liquid container is extracted, and cleaning solution enters in liquid container；After the completion of cleaning, control peristaltic pump 500 passes through the 4th
Solenoid valve 820 is pressed into air into liquid container, while waste liquid after cleaning being transmitted back in multi-pass valve group 100, and waste liquid can pass through
It passes in and out branch mouth 103 and continuous system is discharged.
According to a particular embodiment of the invention, third solenoid valve 810 and the 4th solenoid valve 820 can be normally closed solenoid valve.
Third solenoid valve 810 and the 4th solenoid valve 820 pertain only to open and close two states at work, by by third solenoid valve
810 and the 4th solenoid valve 820 be set as the relatively simple normally closed solenoid valve of structure, can guarantee two solenoid valves meet work
Under the premise of needing, the equipment cost of solenoid valve is further decreased.
According to an embodiment of the invention, with reference to Fig. 4, when carrying out quantitative sample injection to reaction colorimetric pool using system of the invention
When with cleaning, system of the invention can further comprise the first fixing seat 910 and the second fixing seat 920, and the first fixing seat 910 is set
It sets at the first opening 701 of reaction colorimetric pool；Second fixing seat 920 may be provided at the second opening 702 of reaction colorimetric pool.
It is fixed as a result, by the reaction colorimetric pool that the first and second fixing seats treat sample introduction or cleaning, can be further ensured that system
The stability of work.Reacting colorimetric pool material is usually quartz glass, has good translucency, while can high temperature resistant and strong corruption
Erosion, reaction colorimetric pool is usually whole cylindrical, and processing technology is simple, and processing cost is lower.Since reaction colorimetric pool is quartz
Material is frangible, and needs to carry out resolution reaction under high temperature (such as 175 DEG C or more) and air-tight state many times to accelerate
Clear up reaction speed.In practical operation, first the both ends for reacting colorimetric pool are fixed by the first and second fixing seats, then will
Fixing seat is fixed on external metallization frame, the fixation and sealing of the colorimetric pool that can be more convenient for.
According to an embodiment of the invention, the first solenoid valve 300 and second solenoid valve 400 in system of the invention can be
Two-position three way magnetic valve.By setting two-position three way magnetic valve for the first and second solenoid valves, it can be further ensured that system
Even running.Specific example according to the present invention, the first solenoid valve 300 use two-position three way magnetic valve, and one end can be with wriggling
Pump 500 is connected, and the other end can be connected with quantity tube 200, and third end can be connected with fluid collection device or atmosphere.Second solenoid valve
400 use two-position three way magnetic valve, and one end can be connected with peristaltic pump 500, and the other end can hold with the liquid to sample introduction or cleaning
Device is connected, and third end can be connected with fluid collection device or atmosphere.Pass through the first solenoid valve 300 of regulation and the 4th electromagnetism as a result,
The specific connection status of valve 400 can be convenient accurate quantitative analysis and the cleaning for efficiently realizing liquid container.
According to an embodiment of the invention, the first solenoid valve 300, second solenoid valve 400 are connected with liquid trap with reference to Fig. 5
1000, at least one disengaging branch mouth 103 is connected with liquid trap 1000.Specifically, the liquid trap that the first solenoid valve 300 is connected
1000 one side can be quantitative rear extra for collecting detector 600 and quantity tube 200 in the accurate quantitative analysis to liquid container
Liquid, on the other hand can be communicated with the atmosphere, in regulating system each unit work when pressure.Second solenoid valve 400
The liquid trap 1000 connected can be communicated with the atmosphere, pressure when working for each unit in regulating system.Pass in and out branch mouth 103
The liquid trap 1000 of connection can be in the cleaning to liquid container, waste liquid after the cleaning for collecting liquid container discharge.Root
According to some embodiments of the present invention, liquid trap top can connect multiple drain pipes simultaneously, and drain nozzle hangs in liquid trap cavity
Sky, liquid trap cavity top end are communicated with the atmosphere simultaneously.When liquid is discharged in drain pipe, the company through liquid trap lower end funnel type bottom
Adapter tube flows to the waste liquid barrel below liquid trap.And when in drain pipe being negative pressure, it can be sucked from the nozzle in insertion liquid trap
Air.It is liquid or air when being discharged, is air when sucking, to realizes drain and adjust the function of pressure.
According to an embodiment of the invention, the internal diameter of quantity tube 200 is not particularly restricted, those skilled in the art can root
It is selected according to actual needs.According to a particular embodiment of the invention, the internal diameter of quantity tube 200 is 0.3~2mm, passes through control
The length of quantity tube 200 is fixed, and internal diameter in 0.3mm between 2mm, the liquid that can more precisely can accommodate in regulating tube
Body volume (i.e. will liquid volume of the sample introduction into liquid container) guarantees the accurate of sample introduction in liquid container.
According to an embodiment of the invention, the material of quantity tube 200 is not particularly restricted, those skilled in the art can root
It is selected according to actual needs.Preferred embodiment in accordance with the present invention, quantity tube 200 can be by polytetrafluoroethylene (PTFE) (PTFE), fluorine
Change in the copolymer (PFA) of ethylene propylene copolymer (FEP) and perfluoro propyl perfluoroalkyl vinyl ether polytetrafluoroethylene (PTFE) at least it
One forms.In some embodiments, quantity tube 200 can be PTFE tube, FEP pipe or PFA pipe.It is formed by using above-mentioned material
Quantity tube, it is possible to prevente effectively from the corrosion to sample introduction reagent (such as the concentrated sulfuric acid, strong alkaline liquid etc.) to quantity tube, to mention
The service life of high quantity tube.
According to an embodiment of the invention, the material of the first fixing seat 910 and the second fixing seat 920 is not particularly restricted,
Those skilled in the art can select according to actual needs.Preferred embodiment in accordance with the present invention, 910 He of the first fixing seat
Second fixing seat 920 can be formed by fluoroplastics.When carrying out resolution reaction, the liquid digestion condition reacted in colorimetric pool can be high
Up to 175 DEG C or more, and digestion solution may have a strong corrosive, and the material of the first fixing seat 910 and the second fixing seat 920 is using resistance to
High temperature and the fluoroplastics of deep-etching, can further improve its durability.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment 1
Accurate quantification sample introduction is carried out to reaction colorimetric pool using quantitative sample injection and cleaning system of the invention:
With reference to Fig. 6, the common end of second solenoid valve 400 is connected by liquid trap 1000 with air, the first solenoid valve 300
Common end is connected with quantity tube 200, and multi-pass valve group 100 is connected to the solenoid valve and connection quantity tube 200 of the disengaging branch mouth 103 of reagent
101 solenoid valve of first import and export open, third solenoid valve 810 close, peristaltic pump 500 invert, reagent is through in multi-pass valve group 100
Enter quantity tube 200 with the disengaging branch mouth 103 and first import and export 101 for being connected to reagent, it is compacted when liquid reaches detector 600
Dynamic pump 500 stops.The common end of the first solenoid valve 300 is connected with liquid trap 1000 again, peristaltic pump 500 rotates forward, by the first electricity
Surplus liquid between magnet valve 300 and detector 600 is expelled to the connected liquid trap 1000 of the first solenoid valve 300, then by multi-pass
103 solenoid valve of disengaging branch mouth that valve group 100 is connected to reagent is closed, and the common end of the first solenoid valve 300 is connect with quantity tube 200,
Rotated forward by peristaltic pump 500, by the liquid indentation reaction colorimetric pool in quantity tube 200, complete the quick accurate quantification of reagent into
Sample.
Embodiment 2
Rapid Cleaning is carried out to reaction colorimetric pool using quantitative sample injection and cleaning system of the invention:
With reference to Fig. 7,103 solenoid valve of disengaging branch mouth that multi-pass valve group 100 is connected to cleaning solution is opened, remaining disengaging branch mouth 103
Solenoid valve is closed, and third solenoid valve 810 and the 4th solenoid valve 820 are opened, the common end of third solenoid valve 400 and the 4th solenoid valve
810 are connected, and the common end of the first solenoid valve 300 will be reacted when peristaltic pump 500 rotates forward by liquid trap 1000 and air communication
Air in colorimetric pool 700 is extracted out to form negative pressure, and cleaning solution passes through the second disengaging of multi-pass valve group 100 under atmospheric pressure effect
Mouth 102 continuously rapidly enters reaction colorimetric pool 700 through third solenoid valve 810.When cleaning is completed to need to be discharged reaction colorimetric pool 700
In waste liquid when, multi-pass valve group 100 be connected to cleaning solution 103 solenoid valve of disengaging branch mouth closing, be connected to for collecting waste liquid
103 solenoid valve of disengaging branch mouth of liquid trap 1000 is opened, and third solenoid valve 810 and the 4th solenoid valve 820 are opened, peristaltic pump 500
Reversion, by air from the 4th solenoid valve 820 be pressed into reaction colorimetric pool 700, thus by waste liquid through third solenoid valve 810, second into
Outlet 102 and the disengaging branch mouth 103 for being connected with liquid trap are continuously discharged, and complete the Rapid Cleaning process of reaction colorimetric pool.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of quantitative sample injection and cleaning system characterized by comprising
Multi-pass valve group, the multi-pass valve group include first import and export, second import and export and multiple disengaging branch mouths；
Quantity tube, the quantity tube are connected with the first import and export；
First solenoid valve and second solenoid valve, first solenoid valve are connected with the quantity tube, the second solenoid valve and institute
It states the first solenoid valve to be connected, and is provided with peristaltic pump between first solenoid valve and the second solenoid valve；
Detector, the detector are arranged between first solenoid valve and the peristaltic pump；
Wherein, the second import and export and the second solenoid valve are connected with to sample introduction or the liquid container of cleaning.
2. quantitative sample injection according to claim 1 and cleaning system, which is characterized in that the liquid container is spectrophotometric
Meter reaction colorimetric pool, the both ends of the reaction colorimetric pool are respectively arranged with the first opening and the second opening, first opening
It is connected with the second import and export of the multi-pass valve group, second opening is connected with the second solenoid valve.
3. quantitative sample injection according to claim 2 and cleaning system, which is characterized in that further comprise:
Third solenoid valve and the 4th solenoid valve, third solenoid valve setting first opening and the second import and export it
Between, the 4th solenoid valve setting is between second opening and the second solenoid valve.
4. quantitative sample injection according to claim 2 and cleaning system, which is characterized in that further comprise:
First opening of the reaction colorimetric pool is arranged in first fixing seat and the second fixing seat, first fixing seat
Place；Second opening of the reaction colorimetric pool is arranged in second fixing seat.
5. quantitative sample injection according to claim 3 and cleaning system, which is characterized in that the third solenoid valve and described
Four solenoid valves are normally closed solenoid valve.
6. quantitative sample injection according to claim 1 and cleaning system, which is characterized in that first solenoid valve and described
Two solenoid valves are two-position three way magnetic valve.
7. quantitative sample injection according to claim 6 and cleaning system, which is characterized in that first solenoid valve, described
Two solenoid valves are connected with liquid trap, at least one described disengaging branch mouth is connected with liquid trap.
8. quantitative sample injection according to claim 1 and cleaning system, which is characterized in that the quantity tube is by polytetrafluoroethyl-ne
At least one of the copolymer of alkene, fluorinated ethylene propylene copolymer and perfluoro propyl perfluoroalkyl vinyl ether polytetrafluoroethylene (PTFE) shape
At.
9. quantitative sample injection according to claim 1 and cleaning system, which is characterized in that the internal diameter of the quantity tube is 0.3
~2mm.
10. quantitative sample injection according to claim 4 and cleaning system, which is characterized in that first fixing seat and described
Second fixing seat is formed by fluoroplastics.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811209644.6A CN109270284A (en) | 2018-10-17 | 2018-10-17 | Quantitative sample injection and cleaning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811209644.6A CN109270284A (en) | 2018-10-17 | 2018-10-17 | Quantitative sample injection and cleaning system |
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| CN109270284A true CN109270284A (en) | 2019-01-25 |
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| CN201811209644.6A Pending CN109270284A (en) | 2018-10-17 | 2018-10-17 | Quantitative sample injection and cleaning system |
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