CN204758619U - Accurate sampling system based on accurate syringe pump - Google Patents
Accurate sampling system based on accurate syringe pump Download PDFInfo
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- CN204758619U CN204758619U CN201520495181.XU CN201520495181U CN204758619U CN 204758619 U CN204758619 U CN 204758619U CN 201520495181 U CN201520495181 U CN 201520495181U CN 204758619 U CN204758619 U CN 204758619U
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- valve
- injection pump
- precise injection
- syringe pump
- sampling system
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Abstract
The utility model discloses an accurate sampling system based on accurate syringe pump belongs to automatic precision and enters a kind field. This system includes accurate syringe pump, three -way valve, multi -ported valve and stock solution ring, and they pass through the tube coupling each other, three -way valve common port (C) is connected to accurate syringe pump, and current -carrying liquid supply unit is connected to three -way valve one end (A), and the other end (B) is connected with the multi -ported valve common port through the stock solution ring. The utility model discloses ensure same syringe pump while precision and advance several kinds of liquid of appearance to there are not cross contamination and remaining problem, simple structure, simple to operate, it is reliable and stable moreover.
Description
Technical field
The utility model relates to a kind of accurate sampling system based on precise injection pump, belongs to automatic precision sample introduction field, particularly on-line automatic accurate sampling system.
Background technology
Syringe pump is a kind of by mechanical driven syringe, realize the device of high precision, steadily pulse free fluid transfer, divide by purposes and can be divided into medical and non-medical, use for laboratory micro-injection pump and industrial syringe pump etc., the accuracy of sample size and the direct impact analysis result of repeatability.When needs adopt the good several liquid of the accurate sample introduction of same syringe pump, the general mode adopting multy-way switching, general employing multiport valve realizes.
In the existing sample injection method based on accurate sampling pump, very high to the requirement of screw mandrel, require that screw mandrel is even and do not have interval, which substantially increases the cost of the sample injection method based on precise injection pump.And in fact screw mandrel can not ensure do not have interval completely, cause existing sample injection method to be difficult to avoid consequent error, and the requirement of native system to screw mandrel is relatively low, and obviously can reduces the error that screw mandrel causes.
The existing accurate sampling system accuracy based on precise injection pump is better than general sampling system, but existing general accurate sampling system, often there is residual more, precision not and the problem such as cross pollution, and its price is also relative exceeds a lot, limit utilization and popularization that precise injection pump carries out method.Application particularly in online automatic monitor device, it needs the accurate sample introduction carrying out plurality of reagents in same syringe pump.
Summary of the invention
In order to solve problems of the prior art, the utility model proposes a kind of accurate sampling system based on precise injection pump, the accurate sample introduction of plurality of liquid reagent can be carried out in same syringe pump, and there is no the problems such as residual and cross pollution.
Concrete technical scheme of the present utility model is as follows:
Based on an accurate sampling system for precise injection pump, it is characterized in that: this system comprises precise injection pump, T-valve, multiport valve and liquid storage ring, and they are connected by pipeline each other; Precise injection pump connecting tee valve common port (C), T-valve one end (A) connects current-carrying liquid feed unit, and the other end (B) is connected with multiport valve common port by liquid storage ring.
Further design of the present utility model is:
Described multiport valve adopts the logical valve of five-way ~ nine, and beyond this valve common port, each end connects each reagent, water sample, air, waste liquid port and colorimetric pool respectively.
Described liquid storage ring is segment length's flexible pipe, and its volume is slightly larger than the volume of precise injection pump.
Described current-carrying liquid feed unit adopts distilled water, dilution or damping fluid to be carrier fluid liquid.
Allow a small amount of bubble in syringe pump and liquid storage ring, bubble cumulative volume is less than 1ml, and bubble cumulative volume is larger, and the time that after each action completes, wait is stable is longer; Bubble is used for interval reagent.
Syringe pump in the suction operating process pushed away in dosing process is: syringe pump draws a+Xs, bs, cs, ds successively from multiport valve reagent end, syringe pump stops, T-valve switches to A end, syringe pump pushes away Ys, T-valve switches to B end, and syringe pump pushes away a+b+c+ds, and multiport valve switches to waste liquid end, syringe pump pushes away Z+ms (wherein X=Y+Z, m are greater than zero).The residence time is determined as required between action.
This practicality newly has following features:
The utility model guarantees same syringe pump several liquid of accurate sample introduction simultaneously, and does not have cross pollution and residual problem, and structure is simple, easy for installation, and reliable and stable.
Of the present utility model convenient based on precise injection pump feed liquor, precision is high.
In the utility model, the liquid storage volume of liquid storage ring is slightly larger than the active volume of syringe pump; And can have a small amount of bubble in syringe pump and liquid storage ring, bubble cumulative volume is generally less than 1ml, and bubble cumulative volume is larger, and the time that after each action completes, wait is stable is longer; Bubble may be used for interval reagent.
The current-carrying liquid of the utility model carrier fluid liquid feed unit can be distilled water, dilution and damping fluid etc.
Accompanying drawing explanation
Fig. 1 is the accurate sampling system structural representation of the utility model.
Embodiment
Embodiment one, the performance of distilled water, measuring system so reagent is all sampled:
With reference to shown in Fig. 1, the accurate sampling system based on precise injection pump of the present utility model, comprising: 1., precise injection pump; 2., T-valve; 3., liquid storage ring; 4., nine logical valves; 5., colorimetric pool; 6., current-carrying liquid feed unit.Described precise injection pump is connected with the common port (C) of T-valve, (A) connects current-carrying liquid in T-valve one end, the other end (B) is connected with nine logical valve common ports by liquid storage ring, and nine logical other ends (n) of valve connect various reagent feed unit, water sample feed unit and air element etc.
Sampling action process is:
Regulating three-way valve A, C hold connection, control precise injection pump and gather appropriate volume current-carrying liquid, regulating three-way valve B, C end is connected again, many logical selector valves switch to waste port, promoting precise injection pump makes current-carrying liquid enter liquid storage ring, bubble and so forth in exhaustjet pump and liquid storage ring, makes bubble cumulative volume be no more than 1mL.
Regulating three-way valve B, C hold connection, be full of the prerequisite of current-carrying liquid in liquid storage ring and connecting line under, control many logical selector valves to switch between each port in certain sequence, the rotating speed of adjustment precision syringe pump and rotation time, by how, logical selector valve gathers the sample of certain volume, reagent or air, then switches many logical selector valves to reactor port, promotes precise injection pump, make the sample of got volume, reagent or air enter in reactor, so namely complete once accurate sampling and sample introduction process.After drawing from A end the current-carrying liquid needed, if next step wants quantitatively, then syringe pump is pushing away 2s to A end, stops 1s at every turn, then switches to the action pushed away that B end carries out next step; If first push away again quantitatively imbitition at B end, then first should switch to A end and inhale 2s, stop 1s, then switch back B imbitition.
Precise injection pump has obvious impact to this method, and the precise injection pump used in this performance testing process is ShenzhenKeytoFluidControlCo., Ltd., 10mlsyringeassembly.
Reappearance and precision are tested:
With reference to shown in Fig. 1, regulate syringe pump travelling speed (HZ) and time (S), test macro passes through the sampling volume of the different port of many logical selector valves under each speed and time, measure for 7 times, calculate corresponding standard deviation and relative standard deviation, as shown in table 1-1 and 1-2.As can be seen from the table, standard deviation≤0.003g can be made by condition optimizing, relative standard deviation≤0.003. and under most conditions, such requirement can both be reached.
The sample introduction standard deviation (reappearance) of table 1-1 system under friction speed and time
The relative standard deviation (precision) that table 1-2 system samples under friction speed and time
Embodiment two, elaborates the sample introduction flow process of native system for the sample introduction of water quality volatile phenol analyser:
Hardware be connected equality testing part, different piece is specific as follows:
Each port arrangement of nine logical valves is as follows: 1# connects colorimetric pool, and 2# connects water sample, and 3# connects 4-AA, and 4# connects air, and 8# connects the potassium ferricyanide, and 5# connects waste liquid, and 6#-7# is vacant for subsequent use.It is the current-carrying liquid be made in the ammoniacal liquor of 1.19g/mL that T-valve A holds connection 20g ammonium chloride to be dissolved in 100mL concentration.Precise injection pump sample introduction speed 0.0671g/s.
Regulating three-way valve A, C hold connection, are all released by current-carrying liquid in syringe pump, then inhale 0.5s, stop 1s.Regulating three-way valve B, C hold connection, and nine logical Vavle switching, to 2#, regulate the syringe pump 61.63S duration of runs, gather water sample; Lead to Vavle switching to 3# by nine after stopping 12S, regulate the syringe pump 7.469S duration of runs, gather 0.5mL4-amino-antipyrine; Lead to Vavle switching to 1# by nine after stopping 12S again, regulating three-way valve A, C hold connection, and syringe pump pushes away 1s, stops 1s, and regulating three-way valve B, C hold connection, and 4.5ml collection liquid is pushed away 67.099s and delivers to colorimetric pool by syringe pump, stops 1s, and nine logical Vavle switching, to 5#, push away 3s, stop 1s.
Regulating three-way valve A, C hold connection, regulate the syringe pump 7.469S duration of runs after stopping 8S, gather 0.5mL current-carrying liquid; After stopping 12S, regulating three-way valve B, C end is communicated with, and nine logical Vavle switching, to 2#, regulate the syringe pump 61.63S duration of runs, gather water sample; To stop after 12S by nine logical Vavle switching to 1#, regulating three-way valve A, C holds connection, and syringe pump pushes away 1s, stops 1s, and regulating three-way valve B, C hold connection again, and 4ml is gathered water sample and pushes away 59.63s and deliver to colorimetric pool by syringe pump, and stop 1s, nine lead to Vavle switching to 5#, push away 3s, stop 1s.
Regulating three-way valve A, C hold connection, regulate the syringe pump 7.469S duration of runs after stopping 8S, gather 0.5mL current-carrying liquid; After stopping 12S, regulating three-way valve B, C end is communicated with, and nine logical Vavle switching, to 4#, regulate the syringe pump 4.469S duration of runs, gather 0.3mL air; Lead to Vavle switching to 8# by nine after stopping 12S again, regulate the syringe pump 8.469S duration of runs, gather the potassium ferricyanide; To stop after 12S by nine logical Vavle switching to 1#, regulating three-way valve A, C holds connection, and syringe pump pushes away 1s, stops 1s, and regulating three-way valve B, C hold connection again, and 0.5ml is gathered water sample and pushes away 7.469s and deliver to colorimetric pool by syringe pump, and stop 1s, nine lead to Vavle switching to 5#, push away 3s, stop 1s.
So namely complete the whole sample introduction process of volatile phenol.
Claims (5)
1. based on an accurate sampling system for precise injection pump, it is characterized in that: this system comprises precise injection pump, T-valve, multiport valve and liquid storage ring, and they are connected by pipeline each other; Precise injection pump connecting tee valve common port (C), T-valve one end (A) connects current-carrying liquid feed unit, and the other end (B) is connected with multiport valve common port by liquid storage ring.
2. according to claim 1 based on the accurate sampling system of precise injection pump, it is characterized in that: described multiport valve adopts the logical valve of five-way ~ nine, and beyond this valve common port, each end connects each reagent, water sample, air, waste liquid port and colorimetric pool respectively.
3. according to claim 1 or 2 based on the accurate sampling system of precise injection pump, it is characterized in that: described liquid storage ring is segment length's flexible pipe, and its volume is slightly larger than the volume of precise injection pump.
4. according to claim 3 based on the accurate sampling system of precise injection pump, it is characterized in that: described current-carrying liquid feed unit adopts distilled water, dilution or damping fluid to be carrier fluid liquid.
5. the accurate sampling system based on precise injection pump according to claim 1, it is characterized in that: in syringe pump and liquid storage ring, allow a small amount of bubble, bubble cumulative volume is less than 1ml, and bubble cumulative volume is larger, and the time that after each action completes, wait is stable is longer; Bubble is used for interval reagent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520495181.XU CN204758619U (en) | 2015-07-09 | 2015-07-09 | Accurate sampling system based on accurate syringe pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520495181.XU CN204758619U (en) | 2015-07-09 | 2015-07-09 | Accurate sampling system based on accurate syringe pump |
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| CN201520495181.XU Expired - Fee Related CN204758619U (en) | 2015-07-09 | 2015-07-09 | Accurate sampling system based on accurate syringe pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519334A (en) * | 2018-04-08 | 2018-09-11 | 河南农业大学 | A kind of soil nutrient automatic checkout system and detection method |
| CN113495164A (en) * | 2020-04-02 | 2021-10-12 | 中国科学院深圳先进技术研究院 | Continuous liquid sampling system and control method thereof |
| CN114088648A (en) * | 2021-12-07 | 2022-02-25 | 广东盈峰科技有限公司 | Gas-liquid dual isolation method for multi-ported valve micro-reagent sampling |
-
2015
- 2015-07-09 CN CN201520495181.XU patent/CN204758619U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519334A (en) * | 2018-04-08 | 2018-09-11 | 河南农业大学 | A kind of soil nutrient automatic checkout system and detection method |
| CN108519334B (en) * | 2018-04-08 | 2020-09-22 | 河南农业大学 | Automatic detection system and detection method for soil nutrients |
| CN113495164A (en) * | 2020-04-02 | 2021-10-12 | 中国科学院深圳先进技术研究院 | Continuous liquid sampling system and control method thereof |
| CN113495164B (en) * | 2020-04-02 | 2023-11-21 | 中国科学院深圳先进技术研究院 | Continuous liquid sample injection system and control method thereof |
| CN114088648A (en) * | 2021-12-07 | 2022-02-25 | 广东盈峰科技有限公司 | Gas-liquid dual isolation method for multi-ported valve micro-reagent sampling |
| CN114088648B (en) * | 2021-12-07 | 2024-03-01 | 广东盈峰科技有限公司 | Gas-liquid dual isolation method for sampling micro-reagent of multi-way valve |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20160709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |