CN108267356A - A kind of sample automatic dilution device - Google Patents
A kind of sample automatic dilution device Download PDFInfo
- Publication number
- CN108267356A CN108267356A CN201810133505.3A CN201810133505A CN108267356A CN 108267356 A CN108267356 A CN 108267356A CN 201810133505 A CN201810133505 A CN 201810133505A CN 108267356 A CN108267356 A CN 108267356A
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- dilution
- electric conductivity
- valve
- conductivity detector
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- 238000010790 dilution Methods 0.000 title claims abstract description 151
- 239000012895 dilution Substances 0.000 title claims abstract description 151
- 239000007788 liquid Substances 0.000 claims description 17
- 239000002699 waste material Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 abstract description 9
- 239000000523 sample Substances 0.000 description 228
- 238000004140 cleaning Methods 0.000 description 15
- 238000005070 sampling Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000243 solution Substances 0.000 description 7
- 238000004255 ion exchange chromatography Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000013068 control sample Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000012470 diluted sample Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
- G01N2001/386—Other diluting or mixing processes
Abstract
The present invention provides a kind of sample automatic dilution device, belongs to microscale microscope technical field.Sample automatic dilution device, including control system, sample feeding pipe, electric conductivity detector, sample pump, dilution pumps and quantitative loop, sample feeding pipe is used for sample stoste sample introduction, sample feeding pipe, electric conductivity detector, sample pump and quantitative loop are sequentially communicated, dilution pumps are used to absorb dilution, dilution pumps are connected with quantitative loop, and control system is electrically connected with electric conductivity detector, sample pump and dilution pumps.This detection device detects the electric conductivity value of sample stoste to judge the extension rate of sample stoste needs by electric conductivity detector, makes operation more accurate, the sample concentration after dilution is in the detection range of ion chromatograph.
Description
Technical field
The present invention relates to microscale microscope technical field, in particular to a kind of sample automatic dilution device.
Background technology
Sample dilutes function, using artificial setting extension rate, completes dilution work by fixed multiple, often occurs dilute
The ion range in rear sample is released except the range of linearity of ion chromatograph, analysis work can just be completed by needing to dilute again
Make, multiple sample introduction increases workload.
Dilution instrument is typically independent of outside ion chromatography and works, and can not communicate, can not be combined with instrument, ion chromatography from
Dynamic injector can not come into operation, can only hand sampling, make troubles to using.
Invention content
The purpose of the present invention is to provide a kind of sample automatic dilution devices, can be diluted sample introduction automatically, and raising makes
The working efficiency of user.
Realization that the present invention adopts the following technical solutions：
A kind of sample automatic dilution device including control system, sample feeding pipe, electric conductivity detector, sample pump, dilution pumps and is determined
Ring is measured, sample feeding pipe is used for sample stoste sample introduction, and sample feeding pipe, electric conductivity detector, sample pump and quantitative loop are sequentially communicated, and dilution pumps are used
In absorbing dilution, dilution pumps are connected with quantitative loop, and control system is electrically connected with electric conductivity detector, sample pump and dilution pumps.
Further, in preferred embodiments of the present invention, above-mentioned sample automatic dilution device further include sample caching pipe and
Outlet shutoff valve, sample caching pipe connect with electric conductivity detector and sample pump and positioned at the same end of sample caching pipe, samples
The one end for caching the separate electric conductivity detector of pipe is connected with outlet shutoff valve, and outlet shutoff valve is electrically connected with control system.
Further, in preferred embodiments of the present invention, above-mentioned sample automatic dilution device further includes four-way valve, four-way valve
It is connected with electric conductivity detector, sample caching pipe and sample pump respectively.
Further, in preferred embodiments of the present invention, above-mentioned four-way valve selectively connection dilution pumps.
Further, in preferred embodiments of the present invention, above-mentioned sample automatic dilution device further includes dilution bottle, dilution
Liquid bottle is used to connect dilution pumps.
Further, in preferred embodiments of the present invention, above-mentioned sample automatic dilution device further includes waste liquid bottle, waste liquid bottle
For connecting the side of the separate sample of outlet shutoff valve caching pipe.
Further, in preferred embodiments of the present invention, above-mentioned sample automatic dilution device further includes triple valve, triple valve
It is respectively communicated with sample pump, dilution pumps and quantitative loop.
Further, in preferred embodiments of the present invention, above-mentioned sample automatic dilution device further includes autosampler, control
System processed is electrically connected with autosampler, and autosampler is connected with the side of the separate electric conductivity detector of sample feeding pipe.
Further, in preferred embodiments of the present invention, above-mentioned sample automatic dilution device further includes sample bottle, sample bottle
It is connected with the side of the separate electric conductivity detector of sample feeding pipe.
Further, in preferred embodiments of the present invention, above-mentioned sample automatic dilution device further includes sample inlet cut-off
Valve, sample inlet shut-off valve are set between sample feeding pipe and electric conductivity detector, and sample inlet shut-off valve is electrically connected with control system.
The advantageous effect of sample automatic dilution device that presently preferred embodiments of the present invention provides is：Sample feeding pipe is former for sample
Liquid sample introduction, sample feeding pipe, electric conductivity detector, sample pump and quantitative loop are sequentially communicated, dilution pumps for absorbing dilution, dilution pumps with
Quantitative loop connects, and control system is electrically connected with electric conductivity detector, sample pump and dilution pumps, and sample stoste is absorbed by sample feeding pipe
Enter in electric conductivity detector, electric conductivity detector detects the electric conductivity value of sample stoste and electric conductivity value is passed to control system, control
System compares obtained electric conductivity value and initial data, determines the extension rate of sample stoste, control system control sample pump will
Sample stoste is absorbed into quantitative loop from electric conductivity detector, and control system control dilution pumps will be dilute according to determining extension rate
It releases liquid and is absorbed into quantitative loop, sample stoste and dilution is made to be uniformly mixed in quantitative loop, this quantitative loop is ion chromatography
The quantitative loop of instrument, you can carry out the detection of ion chromatography, realize automatic dilution sample introduction.Sample stoste is detected by electric conductivity detector
Electric conductivity value come judge sample stoste need extension rate, make operation more accurate, the sample concentration after dilution is in ion color
In the detection range of spectrometer, the working efficiency of user is improved.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings and also belong to protection scope of the present invention.
Fig. 1 is the pipeline connection diagram of sample automatic dilution device provided in an embodiment of the present invention；
Fig. 2 is the functional block diagram of sample automatic dilution device provided in an embodiment of the present invention.
Icon：110- control systems；120- sample feeding pipes；130- electric conductivity detectors；140- samples pump；150- dilutes
Pump；160- quantitative loops；170- sample inlet shut-off valves；180- autosamplers；190- samples caching pipe；210- is exported
Shut-off valve；220- four-way valves；230- three-way switch valves；240- dilution bottles；250- waste liquid bottles；260- triple valves；
270- sample bottles.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be configured to arrange and design with a variety of different.Therefore, below to provide in the accompanying drawings the present invention reality
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
Embodiment
A kind of sample automatic dilution device can realize the automatic dilution sample introduction of ion chromatograph, improve the work of user
Make efficiency.
Fig. 1 is the pipeline connection diagram of sample automatic dilution device provided in this embodiment；Fig. 2 be the present embodiment provides
Sample automatic dilution device functional block diagram.Also referring to Fig. 1 and Fig. 2, in the present embodiment, sample automatic dilution device packet
Include control system 110, sample feeding pipe 120, electric conductivity detector 130, sample pump 140, dilution pumps 150 and quantitative loop 160, sample feeding pipe
120 are used for sample stoste sample introduction, and sample feeding pipe 120, electric conductivity detector 130, sample pump 140 and quantitative loop 160 are sequentially communicated, dilute
For absorbing dilution, dilution pumps 150 connect pump 150 with quantitative loop 160, control system 110 and electric conductivity detector 130, sample
Pump 140 and dilution pumps 150 are electrically connected.
Sample stoste is absorbed into electric conductivity detector 130 by sample feeding pipe 120, and electric conductivity detector 130 detects sample original
Electric conductivity value is simultaneously passed to control system 110 by the electric conductivity value of liquid.Control system 110 is by obtained electric conductivity value and initial data pair
Than determining the extension rate of sample stoste, the control sample of control system 110 pump 140 is by sample stoste from electric conductivity detector 130
It is absorbed into quantitative loop 160.Control system 110 controls dilution pumps 150 to be absorbed into dilution according to determining extension rate
Quantitative loop 160.
Sample stoste and dilution is made to be uniformly mixed in quantitative loop 160, this quantitative loop 160 is determining for ion chromatograph
Measure ring 160, you can carry out the detection of ion chromatography, realize automatic dilution sample introduction.Sample stoste is detected by electric conductivity detector 130
Electric conductivity value come judge sample stoste need extension rate, make operation more accurate, the sample concentration after dilution is in ion color
In the detection range of spectrometer, the working efficiency of user is improved.
Control system 110 is the core control portions of whole device, can realize that automatic sampling, comparing and data are defeated
The characteristics such as enter, it is identical with the principle that existing ion chromatograph realizes automatic dilution, comparing and data input, only control
System 110 processed and the connection mode of external device (ED) component are changed.
In the present embodiment, control system 110 has input module, and the solution for measuring various concentration in each solution is corresponding
Electric conductivity value, and control system 110 is inputted, obtain initial data.I.e. user's portion's detection outside various concentration is of the same race molten
The electric conductivity value of liquid obtains the concentration of same solution and the one-to-one relationship of electric conductivity value, and passes through output module and be entered into
In control system 110, the initial data as control system 110 is preserved, convenient to be subsequently compared, i.e., is to control
System 110 is compared by the electric conductivity value of the existing sample stoste for flowing into electric conductivity detector 130 with initial data, calculates sample
The extension rate that product stoste needs, to be subsequently diluted.
Sample automatic dilution device further includes sample inlet shut-off valve 170, and sample inlet shut-off valve 170 is set to sample feeding pipe
Between 120 and electric conductivity detector 130, sample inlet shut-off valve 170 is electrically connected with control system 110.Control system 110 is by sample
Inlet stop valve 170 is opened, then starts to sample, and the sample stoste in probe tube enters after sample inlet shut-off valve 170
In electric conductivity detector 130.
Sample automatic dilution device further includes autosampler 180, and control system 110 is electrically connected with autosampler 180,
Autosampler 180 is connected with the side of the separate electric conductivity detector 130 of sample feeding pipe 120, i.e., with the separate sample of sample feeding pipe 120
The side connection of inlet stop valve 170.Sample automatic dilution device further includes sample bottle 270, sample bottle 270 and sample feeding pipe 120
Separate electric conductivity detector 130 side connection.
I.e. in the present embodiment, there are two types of input mode, respectively automatic sampling and hand sampling, during automatic sampling, control
System 110 control autosampler 180 in sample stoste enter in sample feeding pipe 120, i.e., then control system 110 control automatically into
Sample device 180 works, and sample stoste is entered sample feeding pipe 120 out of autosampler 180, then pass through sample inlet shut-off valve 170
Enter electric conductivity detector 130 afterwards.During hand sampling, user injects the sample stoste in sample injection bottle in sample feeding pipe 120, i.e., directly
It connects and is entered the sample stoste injection in sample bottle 270 in sample feeding pipe 120, then pass through sample inlet shut-off valve using injection device
Enter electric conductivity detector 130 after 170.
Sample automatic dilution device further includes sample caching pipe 190 and outlet shutoff valve 210, sample caching pipe 190 and electricity
Detector 130 is led to connect with sample pump 140 and positioned at the same end of sample caching pipe 190, the separate electricity of sample caching pipe 190
The one end for leading detector 130 is connected with outlet shutoff valve 210, and outlet shutoff valve 210 is electrically connected with control system 110.Control system
110 control outlet shutoff valve 210 of system is opened, then after sample is by electric conductivity detector 130, can enter sample due to pressure action
It is cached, is avoided when control system 110 calculates the diluted multiple of sample stoste needs not yet in caching pipe 190
It waits, sample stoste is put into quantitative loop 160.
When control system 110 compares obtained electric conductivity value and initial data, control system 110 controls outlet shutoff valve
210 open, and the sample stoste in electric conductivity detector 130 is absorbed into sample caching pipe 190；When control system 110 determines
During the extension rate of sample stoste, control system 110 controls sample pump 140 to absorb sample stoste from sample caching pipe 190
Into quantitative loop 160.So as to the storage and absorption of sample stoste, facilitate the automatic dilution for carrying out sample stoste.
Sample automatic dilution device further includes four-way valve 220, and four-way valve 220 caches respectively with electric conductivity detector 130, sample
Pipe 190 is connected with sample pump 140.By the setting of four-way valve 220, can facilitate each component of sample automatic dilution device
After outlet shutoff valve 210 is opened in connection, i.e. control system 110, four-way valve is passed through by the sample stoste of electric conductivity detector 130
Enter after 220 in sample caching pipe 190, after the calculating of control system 110 finishes, control sample pump 140, which caches sample, manages
Sample stoste in 190 is absorbed by four-way valve 220 in quantitative loop 160, is sampled.
220 selectivity connection dilution pumps 150 of four-way valve, when needing to be sampled, four-way valve 220 and dilution pumps
150 disconnect, and when needing to carry out the cleaning of sample automatic dilution device, four-way valve 220 connects dilution pumps 150, can incite somebody to action
Water is absorbed into, and carries out the cleaning of sample automatic dilution device.Preferably, three are provided between dilution pumps 150 and four-way valve 220
Direction changeover valve 230, three-way switch valve 230 is electrically connected with control system 110, and when to be sampled, control system 110 is controlled
Three-way switch valve 230 processed connects quantitative loop 160, and four-way valve 220 is made to be disconnected with dilution pumps 150, and when needing, progress sample is automatically dilute
When the cleaning of release device, control system 110 controls three-way switch valve 230 to connect four-way valve 220, makes dilution pumps 150 with determining
Amount ring 160 disconnects, and realizes cleaning.
Sample automatic dilution device further includes dilution bottle 240, and dilution bottle 240 is used to connect dilution pumps 150.It i.e. will be dilute
It releases liquid to be fitted into dilution bottle, so as to dilute sample stoste.In the present embodiment, dilution can be the solvent or water of sample stoste,
To be diluted to sample stoste or sample automatic dilution device to be cleaned.
Sample automatic dilution device further includes waste liquid bottle 250, and waste liquid bottle 250 is used to connect the separate of outlet shutoff valve 210
Sample caches the side of pipe 190.After sample pumps 140 quantitative adsorption sample stostes, remaining sample is former in sample caching pipe 190
The waste liquid of liquid and cleaning sample caching pipe 190 is all discharged by outlet shutoff valve 210 in waste liquid bottle 250, is cleaned.
Sample automatic dilution device further includes triple valve 260, and triple valve 260 is respectively communicated with sample pump 140, dilution pumps 150
With quantitative loop 160.By the setting of triple valve 260, it can facilitate each members of sample automatic dilution device, that is, work as control
When system 110 processed controls sample pump 140 and the work of dilution pumps 150, sample stoste passes through triple valve out of sample pump 140
Enter in quantitative loop 160 after 260, dilution enters after triple valve 260 in quantitative loop 160 out of dilution pumps 150, sample
Product stoste and dilution mix in quantitative loop 160.
In the present embodiment, dilution that amount and the dilution pumps 150 of sample stostes that sample pump 140 absorbs absorb amount and
Amount for quantitative loop 160.Control system 110 can calculate the amount for needing the sample stoste and dilution absorbed, so that the two exists
It is mixed in quantitative loop 160, the summation of the amount of two kinds of solution is consistent with the volume of quantitative loop 160, subsequently to carry out ion chromatography
The sample introduction of instrument.
The step of detecting after finishing, further including cleaning sample automatic dilution device.Cleaning sample automatic dilution device
Method includes：A, cleaning sample caching pipe 190, outlet shutoff valve 210 and dilution pumps 150, sample caching pipe 190 and outlet are cut
The only pipeline between valve 210；Control system 110 controls water to flow through sample caching pipe 190 and outlet shutoff valve from dilution pumps 150
It 210 and excludes.B, clean sample feeding pipe 120, electric conductivity detector 130, sample pump 140, quantitative loop 160 and between pipeline；Clearly
Wash the pipeline between dilution pumps 150, quantitative loop 160 and dilution pumps 150 and quantitative loop 160.Control system 110 control water from into
Sample pipe 120 flows through electric conductivity detector 130, sample pump 140 and quantitative loop 160 and water is controlled to flow through quantitative loop from dilution pumps 150
160.So that entire sample automatic dilution device is all cleaned up, prevent to pollute, the data for making detection are more accurate.
The operation principle of sample automatic dilution device provided by the invention is：
It can be automatic sampling pattern：When using 180 sample introduction pattern of autosampler, all components are involved in work.
An enabling signal is sent to control system 110 when autosampler 180 starts, sample automatic dilution device synchronously completes correlation
Setting, sample inlet shut-off valve 170 is connected when sample introduction starts, and sample is pushed into from autosampler 180, and sample passes through sample inlet
Shut-off valve 170 enters electric conductivity detector 130, and sample flows through four-way valve 220, and outlet shutoff valve 210 is connected at this time, three-way switch valve
230 disconnect with four-way valve 220, and sample stoste enters in sample caching pipe 190, and electric conductivity detector 130 is electrically connected with control system 110
It connects, control system 110 judges suitable extension rate, and respective flow rate set instruction issuing is given according to obtained electric conductivity value
Sample pump 140 and dilution pumps 150, sample pump 140 and the difference pipette samples stoste of dilution pumps 150 and dilution, at this time threeway are cut
It changes valve 230 to connect with triple valve 260, releases sample stoste to chromatograph quantitative loop 160 by setting flow velocity, the sample after dilution is deposited
It is stored in chromatograph quantitative loop 160, completes dilution.
Hand sampling pattern：When using hand sampling pattern, all components in addition to autosampler 180 are involved in
Work.Start sample automatic dilution device in control system 110, sample automatic dilution device completes related setting, and sample introduction is opened
Begin, sample inlet shut-off valve 170 is connected first, and sample is pushed into from injection port with syringe or injection port connects sample bottle 270, sample
Product enter electric conductivity detector 130 by sample inlet shut-off valve 170, and sample flows through four-way valve 220, at this time outlet shutoff valve 210
It connects, three-way switch valve 230 is disconnected with four-way valve 220, and sample enters in sample caching pipe 190, electric conductivity detector 130 and control
System 110 is electrically connected, and control system 110 judges suitable extension rate, and respective flow velocity is set according to obtained electric conductivity value
Instruction issuing is determined to sample pump 140 and dilution pumps 150, sample pump 140 and dilution pumps 150 distinguish pipette samples and dilution, this
When three-way switch valve 230 connected with triple valve 260, sample stoste is released to chromatograph quantitative loop 160 by setting flow velocity, after dilution
Sample storage in chromatograph quantitative loop 160, complete dilution.
Cleaning model：When using cleaning model, it is divided into two parts, a part of cleaning sample caches pipe 190, and a part is clear
Wash sample flow path.When cleaning sample caches pipe 190, only dilution pumps 150 work, and sample inlet shut-off valve 170 disconnects, outlet
Shut-off valve 210 is connected, and three-way switch valve 230 is connected with four-way valve 220, and dilution pumps 150 draw dilution from dilution bottle 240,
And pumped out by the flow velocity that control system 110 is set, diluent stream enters sample through four-way valve 220 and caches pipe 190, then by going out
Mouth shut-off valve 210 enters in waste liquid bottle 250, completes sample caching 190 cleaning process of pipe；When cleaning sample flow path, sample pump
140 work at the same time with dilution pumps 150, will be packed into pure water in sample bottle 270 first, and sample inlet shut-off valve 170 is connected, and outlet is cut
Only valve 210 disconnects, and three-way switch valve 230 is connected with triple valve 260, and sample pump 140 draws pure water, pure water from sample bottle 270
Enter in sample pump 140 followed by sample inlet shut-off valve 170, electric conductivity detector 130, four-way valve 220.Dilution pumps 150 from
Pure water is drawn in dilution bottle 240, sample pump 140 releases inhaled pure water to three-way connector and chromatography simultaneously with dilution pumps 150
In instrument quantitative loop 160, the cleaning of entire flow path is completed.
This sample automatic dilution device judges extension rate by detecting the electric conductivity value of sample stoste, the sample after dilution
Concentration is in the detection range of ion chromatograph；And automatic sampling is carried out, the more convenient control of sample introduction.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of sample automatic dilution device, which is characterized in that including control system, sample feeding pipe, electric conductivity detector, sample pump,
Dilution pumps and quantitative loop, the sample feeding pipe are used for sample stoste sample introduction, the sample feeding pipe, the electric conductivity detector, the sample
Pump and the quantitative loop are sequentially communicated, and the dilution pumps are for absorbing dilution, and the dilution pumps are connected with the quantitative loop, institute
Control system is stated to be electrically connected with the electric conductivity detector, sample pump and the dilution pumps.
2. sample automatic dilution device according to claim 1, which is characterized in that the sample automatic dilution device also wraps
Include sample caching pipe and outlet shutoff valve, sample caching pipe is pumped with the electric conductivity detector and the sample to be connected and position
In the same end of sample caching pipe, one end far from the electric conductivity detector of the sample caching pipe is cut with the outlet
Only valve connects, and the outlet shutoff valve is electrically connected with the control system.
3. sample automatic dilution device according to claim 2, which is characterized in that the sample automatic dilution device also wraps
Four-way valve is included, the four-way valve connects respectively with the electric conductivity detector, sample caching pipe and sample pump.
4. sample automatic dilution device according to claim 3, which is characterized in that described in the four-way valve selectively connection
Dilution pumps.
5. according to claim 2-4 any one of them sample automatic dilution devices, which is characterized in that the sample is automatically dilute
Release device further includes dilution bottle, and the dilution bottle is used to connect the dilution pumps.
6. according to claim 2-4 any one of them sample automatic dilution devices, which is characterized in that the sample is automatically dilute
Release device further includes waste liquid bottle, and the waste liquid bottle is used to connect one far from sample caching pipe of the outlet shutoff valve
Side.
7. sample automatic dilution device according to claim 1, which is characterized in that the sample automatic dilution device also wraps
Triple valve is included, the triple valve is respectively communicated with the sample pump, the dilution pumps and the quantitative loop.
8. sample automatic dilution device according to claim 1, which is characterized in that the sample automatic dilution device also wraps
Autosampler is included, the control system is electrically connected with the autosampler, the autosampler and the sample feeding pipe
Side far from the electric conductivity detector connects.
9. sample automatic dilution device according to claim 1, which is characterized in that the sample automatic dilution device also wraps
Sample bottle is included, the sample bottle is connected with the side far from the electric conductivity detector of the sample feeding pipe.
10. sample automatic dilution device according to claim 8 or claim 9, which is characterized in that the sample automatic dilution device
Sample inlet shut-off valve is further included, the sample inlet shut-off valve is set between the sample feeding pipe and the electric conductivity detector,
The sample inlet shut-off valve is electrically connected with the control system.
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| CN201810133505.3A CN108267356A (en) | 2018-02-08 | 2018-02-08 | A kind of sample automatic dilution device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810133505.3A CN108267356A (en) | 2018-02-08 | 2018-02-08 | A kind of sample automatic dilution device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280167A (en) * | 2019-07-22 | 2019-09-27 | 上海远禾环保科技有限公司 | One kind is for the diluted system of high concentration chemicals high-precision and device |
| CN111521478A (en) * | 2020-05-20 | 2020-08-11 | 中国科学院深海科学与工程研究所 | Deep sea normal position gradient circulation diluting device |
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