CN202599840U - Sample injection device of two-injection-pump contrast ventriculography (CVG) system - Google Patents
Sample injection device of two-injection-pump contrast ventriculography (CVG) system Download PDFInfo
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- CN202599840U CN202599840U CN 201220225082 CN201220225082U CN202599840U CN 202599840 U CN202599840 U CN 202599840U CN 201220225082 CN201220225082 CN 201220225082 CN 201220225082 U CN201220225082 U CN 201220225082U CN 202599840 U CN202599840 U CN 202599840U
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Abstract
The utility model provides a sample injection device of a two-injection-pump contrast ventriculography (CVG) system. According to the scheme I, a reducing agent pipe is communicated with a first valve position of a reducing valve; a sample pump is communicated with a second valve position of the reducing valve; and carrier gas is communicated with a reactor. According to a scheme II, a gas outlet of a gas and liquid separator is communicated with a gas discharging pipe; a liquid outlet of the gas and liquid separator is communicated with an inlet of a pump pipe of a peristaltic pump; an outlet of the pump pipe of the peristaltic pump is communicated with a waste liquid pipe; and the carrier gas is communicated with the upper part of the gas and liquid separator. By the sample injection device, a peristaltic pump pipe sample injection mode is replaced by an injection pump sample injection mode; furthermore, structural members such as a conversion valve which is in direct contact with a chemical solution are not used; during use, the residual volume of liquid is relatively small, the influence on the sample injection is relatively low, and the sample quantification precision is relatively high; application effects of functions such as automatically configuring a standard series for single-point concentration on line and automatically diluting a high-concentration sample on line are enhanced; the precision and the detection limit of the device are improved; and the automation of the device is improved.
Description
Technical field
The utility model relates to a kind of double injection pump CVG system sampling device, belongs to testing tool sampling device technical field.
Background technology
AFS is the spectral class analytical instrument of using always.Can be divided into flow injection, intermittently flow and three kinds of sequential injections according to the input mode of AFS.Yet; In use there is the sampling valve easy-to-leak liquid in the flow injection sampling device; Sample introduction needle and sample introduction Guan Zhongyi produce the sample cross pollution, and because the structure problem of sampling device liquid driven parts, are prone to cause that sample is long-time causes detecting inaccurate problem after quantitatively; And the tightness regulated of pump line briquetting directly influences the problem in serviceable life of test performance and the pump line of instrument, exists human factor to influence shortcomings such as bigger in the prior art.Though and the sampling device part that intermittently flows has solved the problem of sample cross pollution, with shortcomings such as the human factor influence are bigger substantial change is not arranged for the quantitatively long-time back of the tired impaired sample that causes of pump line is inaccurate.Sampling device has been realized substituting of pump line though order flows, and has better solved the quantitatively inaccurate shortcoming of sample, reduces the analytical reagent consumption simultaneously.Sampling device but has structural defective but order flows, and like the independent soda liquor container of needs, increases the problems such as degree complicacy that device is provided with.
Summary of the invention
The purpose of the utility model is in order to solve existing flow injection, intermittently to flow and the shortcoming of three kinds of sampling devices of order flow injection, and then a kind of double injection pump CVG system sampling device is provided.
The purpose of the utility model realizes through following technical scheme:
A kind of double injection pump CVG system sampling device, scheme one comprises: sample current-carrying tube, sample valve, sample loop, reduction pump, carrier gas, reactor, reducing valve, reductive agent pipe, sample pump, gas-liquid separator, peristaltic pump, sewer pipe, gas outlet pipe and mixing valve, said sample current-carrying tube is connected with first valve position of sample valve; The reduction pump is connected with second valve position of sample valve; One end of sample loop is connected with sample valve, and the other end of sample loop is connected with reactor, and the reductive agent pipe is connected with first valve position of reducing valve; Sample pump is connected with second valve position of reducing valve; Reducing valve is connected with reactor, and an end of mixing valve is connected with reactor, and the other end of mixing valve is connected with the inlet of gas-liquid separator; The gas vent of gas-liquid separator is connected with gas outlet pipe; The liquid outlet of gas-liquid separator is connected with the inlet of peristaltic pump pump line, and the outlet of peristaltic pump pump line is connected with sewer pipe, and carrier gas is connected with reactor.
Scheme two comprises: sample current-carrying tube, sample valve, sample loop, reduction pump, carrier gas, reactor, reducing valve, reductive agent pipe, sample pump, gas-liquid separator, peristaltic pump, sewer pipe, gas outlet pipe and mixing valve; Said sample current-carrying tube is connected with first valve position of sample valve, and the reduction pump is connected with second valve position of sample valve, and an end of sample loop is connected with sample valve; The other end of sample loop is connected with reactor; The reductive agent pipe is connected with first valve position of reducing valve, and sample pump is connected with second valve position of reducing valve, and reducing valve is connected with reactor; One end of mixing valve is connected with reactor; The other end of mixing valve is connected with the inlet of gas-liquid separator, and the gas vent of gas-liquid separator is connected with gas outlet pipe, and the liquid outlet of gas-liquid separator is connected with the inlet of peristaltic pump pump line; The outlet of peristaltic pump pump line is connected with sewer pipe, and carrier gas is connected with the top of gas-liquid separator.
The utlity model has following advantage: the utility model has substituted peristaltic pump pump line input mode, adopts the syringe pump sample introduction; Do not adopt the structure members such as cross-over valve that directly contact with chemical solution simultaneously, the remaining volume of liquid is littler in the use, and is littler to the influence of sample introduction, and the sample quantitative accuracy is higher; Can improve the on-line automatic configuration standard of single-point concentration series, online enriched sample such as diluted automatically at the effect of function, improve the precision and the detection limit of instrument, improve the automaticity of instrument, cost performance is higher.
Description of drawings
Fig. 1 is the structural representation of a kind of double injection pump of the utility model CVG system sampling device;
Fig. 2 is the structural representation of the another kind of double injection pump of the utility model CVG system sampling device.
Embodiment
To combine accompanying drawing that the utility model is done further detailed description below: present embodiment provided detailed embodiment, but the protection domain of the utility model is not limited to following embodiment being to implement under the prerequisite with the utility model technical scheme.
As shown in Figure 1; A kind of double injection pump CVG system sampling device that present embodiment is related, scheme one comprises: sample current-carrying tube 1, sample valve 2, sample loop 3, reduction pump 4, carrier gas 5, reactor 6, reducing valve 7, reductive agent pipe 8, sample pump 9, gas-liquid separator 10, peristaltic pump 11, sewer pipe 12, gas outlet pipe 13 and mixing valve 14, said sample current-carrying tube 1 is connected with the first valve position A of sample valve 2; Reduction pump 4 is connected with the second valve position B of sample valve 2; One end of sample loop 3 is connected with sample valve 2, and the other end of sample loop 3 is connected with reactor 6, and reductive agent pipe 8 is connected with the first valve position C of reducing valve 7; Sample pump 9 is connected with the second valve position D of reducing valve 7; Reducing valve 7 is connected with reactor 6, and an end of mixing valve 14 is connected with reactor 6, and the other end of mixing valve 14 is connected with the inlet of gas-liquid separator 10; The gas vent of gas-liquid separator 10 is connected with gas outlet pipe 13; The liquid outlet of gas-liquid separator 10 is connected with the inlet of peristaltic pump 11 pump lines, and the outlet of peristaltic pump 11 pump lines is connected with sewer pipe 12, and carrier gas 5 is connected with reactor 6.
Said reduction pump 4 is syringe pump with sample pump 9.
Said sample valve 2 is solenoid valve, T-valve or multi-position valve with reducing valve 7.
As shown in Figure 2; A kind of double injection pump CVG system sampling device that present embodiment is related, scheme two comprises: sample current-carrying tube 1, sample valve 2, sample loop 3, reduction pump 4, carrier gas 5, reactor 6, reducing valve 7, reductive agent pipe 8, sample pump 9, gas-liquid separator 10, peristaltic pump 11, sewer pipe 12, gas outlet pipe 13 and mixing valve 14, said sample current-carrying tube 1 is connected with the first valve position A of sample valve 2; Reduction pump 4 is connected with the second valve position B of sample valve 2; One end of sample loop 3 is connected with sample valve 2, and the other end of sample loop 3 is connected with reactor 6, and reductive agent pipe 8 is connected with the first valve position C of reducing valve 7; Sample pump 9 is connected with the second valve position D of reducing valve 7; Reducing valve 7 is connected with reactor 6, and an end of mixing valve 14 is connected with reactor 6, and the other end of mixing valve 14 is connected with the inlet of gas-liquid separator 10; The gas vent of gas-liquid separator 10 is connected with gas outlet pipe 13; The liquid outlet of gas-liquid separator 10 is connected with the inlet of peristaltic pump 11 pipe pumps, and the outlet of peristaltic pump 11 pump lines is connected with sewer pipe 12, and carrier gas 5 is connected with the top of gas-liquid separator 10.
Said reduction pump 4 is syringe pump with sample pump 9.
Said sample valve 2 is solenoid valve, T-valve or multi-position valve with reducing valve 7.
The sample introduction flow process:
The first step, initialization: (1) sample valve 2 is got to valve position B place, and reducing valve 7 is got to valve position D, and reduction pump 4 resets with sample pump 9, and mixing valve 14 is opened, and peristaltic pump 11 begins to rotate; The end that resets, mixing valve 14 cuts out, and peristaltic pump 11 stops operating; (2) sample valve 2 is got to valve position B, and reducing valve 7 is got to valve position C, and reductive agent pipe 8 is placed in the reductive agent, and reduction pump 4 pistons move downward, and draws an amount of reductive agent to reduction pump 4 porch; (3) sample valve 2 is got to valve position A, and reducing valve 7 is got to valve position D, and sample current-carrying tube 1 is placed in the current-carrying, and sample pump 9 pistons move downward, and absorbs an amount of current-carrying reactor 6 porch; (4) sample valve 2 is got to valve position B, and reducing valve 7 is got to valve position D, and reduction pump 4 resets with sample pump 9, and mixing valve 14 is opened, and peristaltic pump 11 begins to rotate; The end that resets, mixing valve 14 cuts out, and peristaltic pump 11 stops operating; Repeat (2), (3) and (4) step repeatedly repeatedly, till reduction pump 4 and sample pump 9 air emptyings.The pump 4 that reduces this moment is in reset mode with sample pump 9.
In second step, inhale appearance: reductive agent is inhaled in (1), and sample valve 2 is got to valve position B, and reducing valve 7 is got to valve position C, and mixing valve 14 cuts out, and peristaltic pump 11 does not rotate, and reduction pump 4 is drawn an amount of reductive agent before reduction pump 4 inlets; (2) inhale sample, sample valve 2 is got to valve position A, and reducing valve 7 is got to valve position D; Sample current-carrying tube 1 is placed in the sample, and mixing valve 14 cuts out, and peristaltic pump 11 does not rotate; After sample pump 9 was drawn quantitative sample, sample current-carrying tube 1 was placed in the current-carrying, and sample pump 9 continues to inhale appearance before reactor 6 inlets.
The 3rd step: sample introduction, sample valve 2 is got to valve position B, and reducing valve 7 is got to valve position D, and mixing valve 14 is opened, and peristaltic pump 11 begins to rotate, and reduction pump 4 and the sample pump 9 pistons equivalent that moves upward simultaneously advances straight way sample and reductive agent to get into reactor 6 fully.The gas that produces gets into atomizer through gas outlet pipe 13 and detects, and waste liquid is discharged through peristaltic pump 11 and sewer pipe 12.
The utility model can be realized the full-automation of AFS, has improved the service efficiency and the practicality of AFS, is the more satisfactory sampling device that is used for AFS.
The above; Be merely the preferable embodiment of the utility model; These embodiments all are based on the different implementations under the utility model general idea, and the protection domain of the utility model is not limited thereto, and any technician who is familiar with the present technique field is in the technical scope that the utility model discloses; The variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.
Claims (6)
1. double injection pump CVG system sampling device, comprising: sample current-carrying tube, sample valve, sample loop, reduction pump, carrier gas, reactor, reducing valve, reductive agent pipe, sample pump, gas-liquid separator, peristaltic pump, sewer pipe, gas outlet pipe and mixing valve is characterized in that; Said sample current-carrying tube is connected with first valve position of sample valve, and the reduction pump is connected with second valve position of sample valve, and an end of sample loop is connected with sample valve; The other end of sample loop is connected with reactor; The reductive agent pipe is connected with first valve position of reducing valve, and sample pump is connected with second valve position of reducing valve, and reducing valve is connected with reactor; One end of mixing valve is connected with reactor; The other end of mixing valve is connected with the inlet of gas-liquid separator, and the gas vent of gas-liquid separator is connected with gas outlet pipe, and the liquid outlet of gas-liquid separator is connected with the inlet of peristaltic pump pump line; The outlet of peristaltic pump pump line is connected with sewer pipe, and carrier gas is connected with reactor.
2. double injection pump CVG according to claim 1 system sampling device is characterized in that said reduction pump and sample pump are syringe pump.
3. double injection pump CVG according to claim 1 system sampling device is characterized in that said sample valve and reducing valve are solenoid valve, T-valve or multi-position valve.
4. double injection pump CVG system sampling device, comprising: sample current-carrying tube, sample valve, sample loop, reduction pump, carrier gas, reactor, reducing valve, reductive agent pipe, sample pump, gas-liquid separator, peristaltic pump, sewer pipe, gas outlet pipe and mixing valve is characterized in that; Said sample current-carrying tube is connected with first valve position of sample valve, and the reduction pump is connected with second valve position of sample valve, and an end of sample loop is connected with sample valve; The other end of sample loop is connected with reactor; The reductive agent pipe is connected with first valve position of reducing valve, and sample pump is connected with second valve position of reducing valve, and reducing valve is connected with reactor; One end of mixing valve is connected with reactor; The other end of mixing valve is connected with the inlet of gas-liquid separator, and the gas vent of gas-liquid separator is connected with gas outlet pipe, and the liquid outlet of gas-liquid separator is connected with the inlet of peristaltic pump pump line; The outlet of peristaltic pump pump line is connected with sewer pipe, and carrier gas is connected with the top of gas-liquid separator.
5. double injection pump CVG according to claim 4 system sampling device is characterized in that said reduction pump and sample pump are syringe pump.
6. double injection pump CVG according to claim 4 system sampling device is characterized in that said sample valve and reducing valve are solenoid valve, T-valve or multi-position valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220225082 CN202599840U (en) | 2012-05-18 | 2012-05-18 | Sample injection device of two-injection-pump contrast ventriculography (CVG) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220225082 CN202599840U (en) | 2012-05-18 | 2012-05-18 | Sample injection device of two-injection-pump contrast ventriculography (CVG) system |
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| CN202599840U true CN202599840U (en) | 2012-12-12 |
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| CN 201220225082 Expired - Lifetime CN202599840U (en) | 2012-05-18 | 2012-05-18 | Sample injection device of two-injection-pump contrast ventriculography (CVG) system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730047A (en) * | 2013-12-23 | 2015-06-24 | 北京瑞利分析仪器有限公司 | Miniature vapor generation sampling system and sampling method for portable atomic fluorescence |
| CN111359686A (en) * | 2020-03-19 | 2020-07-03 | 广州大学 | Syringe pump continuous sampling system and control method thereof |
-
2012
- 2012-05-18 CN CN 201220225082 patent/CN202599840U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730047A (en) * | 2013-12-23 | 2015-06-24 | 北京瑞利分析仪器有限公司 | Miniature vapor generation sampling system and sampling method for portable atomic fluorescence |
| CN111359686A (en) * | 2020-03-19 | 2020-07-03 | 广州大学 | Syringe pump continuous sampling system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING BOHUI INNOVATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING RUIGUANG INSTRUMENT CO., LTD. Effective date: 20140922 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100015 CHAOYANG, BEIJING TO: 102206 CHANGPING, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140922 Address after: 102206 No. 9 middle road, Changping District life science and Technology Park, Beijing Patentee after: Beijing Bohui Innovation Technology Co., Ltd. Address before: 100015, M5 building, 5 floors, workshop of Seven Star Huadian Industrial Park, No. 1, Jiuxianqiao East Road, Beijing, Chaoyang District Patentee before: Beijing Ruiguang Instrument Co., Ltd. |
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| CP03 | Change of name, title or address |
Address after: 102206 9 life Garden Road, Changping District, Beijing Patentee after: Beijing Bo Hui innovative biotechnology Limited by Share Ltd Address before: 102206 No. 9 middle road, life science and Technology Park, Changping District, Beijing Patentee before: Beijing Bohui Innovation Technology Co., Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
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| CX01 | Expiry of patent term |