CN202177577U - Sample introduction device for atomic fluorescence spectroscopy - Google Patents
Sample introduction device for atomic fluorescence spectroscopy Download PDFInfo
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- CN202177577U CN202177577U CN2011202968517U CN201120296851U CN202177577U CN 202177577 U CN202177577 U CN 202177577U CN 2011202968517 U CN2011202968517 U CN 2011202968517U CN 201120296851 U CN201120296851 U CN 201120296851U CN 202177577 U CN202177577 U CN 202177577U
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Abstract
The utility model belongs to the field of testing instruments, and provides a sample injection device for an atomic fluorescence spectroscopy. The device comprises a sample introduction pipeline, a sampling component and a sample introduction component, wherein the sample introduction component comprises a sample introduction control unit; the sample introduction control unit comprises a control valve and an injection pump and is used for accurately controlling sample introduction; the sample introduction component and the sampling component are arranged on the sample introduction pipeline; and the sampling component samples through the sample introduction control unit and introduces the samples into the sample introduction pipeline. The sample introduction device adopts less components and a simpler and more convenient method to solve the technical problem that the measuring accuracy and the repeatability of the atomic fluorescence spectroscopy are lowered due to ageing of a hose of a sample injection device, and improves the maintainability of the sample injection device by virtue of the simple and convenient structure.
Description
Technical field
The utility model belongs to field of test instrument, and it is more simple to relate in particular to a kind of structure, the AFS sample injection device that the sample quantitative accuracy is higher.
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.Wherein, the sequential injection mode has combined flow injection and the interrupted advantage that flows, and adopts syringe pump to add the peristaltic pump structure, has the high and good characteristics of repeating effect of measuring accuracy.
The sample introduction accuracy of sampling device is to influence one of the measuring accuracy of AFS and key factor of repeatability.At present, the sample injection device is to be applied in the higher device of sample introduction precision on the AFS.But existing sample injection device comprises syringe pump, pinch valve and threeway.In actual use, this sample injection device exists building block more, and complexity is high, and is maintainable poor, shortcomings such as operation expense height.Particularly pinch valve repeats for a long time that flexible pipe distortion that " open, reset " cause is aging can to cause sample quantitatively inaccurate, dilute automatically and when prepare standard series the sample size error become big, thereby the testing precision and the repeatability of reduction AFS.
The utility model content
In order to solve the technical matters that existing sample injection device exists; The utility model provides a kind of AFS sampling device; The utility model adopts less parts and easier method; Overcome aging AFS measuring accuracy that causes of sample injection device flexible pipe and the repeatable technical matters that descends, easy structure has also improved the maintainability of sample injection device simultaneously.
The know-why of novel AFS sampling device is, through syringe pump current-carrying or sample imported or derives, and through operation valve the sample size of current-carrying or sample accurately controlled.
The utility model to achieve these goals, the technical scheme that is adopted does,
A kind of AFS sampling device, said device comprises the sample introduction pipeline, sample unit, sample introduction parts; Comprise a control sample injection unit in the said sample introduction parts, said control sample injection unit comprises operation valve, accurately controls sample and imports; Said sample introduction parts and sample unit are arranged on the sample introduction pipeline, and sample unit is taked sample through described control sample injection unit, and imports in the sample introduction pipeline.
In concrete enforcement, said control sample injection unit comprises operation valve and syringe pump, adopts the helicitic texture of self to connect between said operation valve and the syringe pump; Said operation valve that links together and syringe pump are arranged on the said sample introduction pipeline.Said syringe pump is done accurate reciprocating device for promoting piston, by motor-driven.
Concrete, described operation valve is the two-bit triplet solenoid valve, has three passages of two valve position.
In order to accomplish sampling process, described sample unit comprises sampling pipe and sampling ring; Said sampling pipe is arranged on an end of said sample lines; Said sampling ring is one section pipeline between from the sampling pipe to the electromagnetic valve entrance; Described sample lines imports current-carrying or sample respectively.Described current-carrying is for being the liquid that is used for promoting sample solution and detergent line, such as the hydrochloric acid of 1%-10% (V/V) concentration.
On said sample lines, also be loaded with peristaltic pump, after said peristaltic pump was arranged on said control sample injection unit, sample imported reactor through said peristaltic pump.
In order to accomplish analytic process, also need in reactor, inject reductive agent, therefore said sampling device also comprises reductive agent sample introduction pipeline, and on said reductive agent sample introduction pipeline, also is provided with peristaltic pump.
The technique effect of the AFS sampling device that the utility model provides does; On the basis of introducing solenoid electric valve; Optimized the structure of sample injection device; Effectively raise the maintainability of sample injection device, solved problem because of aging measuring accuracy that causes of sample injection device feature and accuracy decline.
Description of drawings
Fig. 1 is that the structure of the utility model connects synoptic diagram
Fig. 2 is the structural representation of the utility model control sample injection unit;
Each width of cloth accompanying drawing will combine embodiment explanation
Wherein, 1-sample introduction pipeline, 2-controls sample injection unit, 3-sampling pipe, 4-sampling ring, 5-peristaltic pump, 6-reactor, 7-reductive agent sample introduction pipeline, 22 solenoid electric valves and 23 syringe pumps.
Embodiment
A kind of AFS sampling device, said device comprises sample introduction pipeline 1, sample unit, sample introduction parts; Comprise a control sample injection unit 2 in the said sample introduction parts, said control sample injection unit 2 comprises operation valve, accurately controls sample and imports; Said sample introduction parts and sample unit are arranged on the sample introduction pipeline 1, and sample unit is taked sample through described control sample injection unit 2, and imports in the sample introduction pipeline 1.
Described operation valve 22 is the two-bit triplet solenoid valve, has three passages of two valve position.
In order to accomplish sampling process, described sample unit comprises sampling pipe 3 and sampling ring 4; Said sampling pipe 3 is arranged on an end of said sample lines 1; Said sampling ring 4 is one section pipeline between from the sampling pipe to the electromagnetic valve entrance; Import current-carrying or sample respectively on the described sample lines 1.Described current-carrying is the liquid that is used for promoting sample solution and detergent line, such as the hydrochloric acid of certain 1%-10% (V/V) concentration.
On said sample lines 1, also be loaded with peristaltic pump 5, after said peristaltic pump 5 was arranged on said control sample injection unit 2, sample imported reactor 6 through said peristaltic pump 5.
In order to accomplish analytic process, also need in reactor 6, inject reductive agent, therefore said sampling device also comprises reductive agent sample introduction pipeline 7, and on said reductive agent sample introduction pipeline 7, also is provided with peristaltic pump.
Concrete sample introduction flow process is:
(1) initialization: valve position B is got in solenoid valve 22 positions, and sampling pipe 3 is placed in the current-carrying groove.Moving piston repeatedly is till the air emptying in syringe pump 23.At this moment, be full of current-carrying in the syringe pump 23, piston is in the C position.
(2) inhale appearance: valve position is got to valve position B, and sampling pipe 3 is placed in the sample, and piston is moved to the D direction by the C position, till drawing an amount of sample.Attention: the sample of this moment should not arrive in the syringe pump or the inlet of valve in sampling ring 4, otherwise sampling ring 4 should extend.
(3) sample introduction: valve position is got to A, and sampling pipe 3 is placed in the current-carrying groove, and peristaltic pump 5 begins to rotate (signals collecting begins), and sample and reductive agent get into together in the reactor 6 and by carrier gas and take reacted gas, liquid to gas-liquid separator.The reaction of all samples in sampling ring 4 finishes, peristaltic pump 5 stop operating (signals collecting end).
(4) reset: valve position is got to B, and sampling pipe 3 is placed in the current-carrying groove, and piston is moved to the C direction by the position between D, the C, until getting back to the C position.
A kind of AFS sampling device of the utility model had both kept the advantage of original sample injection device, and the precision and the accuracy that have simultaneously improved sample introduction have again reduced the operation and the maintenance cost of sample injection device.It is advantageous that simple in structurely, solenoid electric valve can not reduce the sample introduction accuracy of current-carrying or sample because distortion is aging, has improved the measuring accuracy of AFS effectively.Compare with existing sample injection device; There is the better application prospect aspects such as this sample injection device is serial at the on-line automatic configuration standard of single-point concentration, online enriched sample is diluted automatically; Can improve the detection limit and the precision of AFS, the test result of sample is more accurate.In addition, this sample injection device practicality is good, cost performance is high, is more satisfactory AFS sampling device.
More than a disclosed specific embodiment that is merely the utility model; The utility model is not limited thereto; Any those skilled in the art can think variation, the multi-ported valve that for example changes two-position three-way valve into other all should fall into the protection domain of the utility model.
Claims (6)
1. AFS sampling device, said device comprises the sample introduction pipeline, sample unit, sample introduction parts;
It is characterized in that comprise a control sample injection unit in the said sample introduction parts, said control sample injection unit comprises operation valve, accurately controls sample and imports; Said sample introduction parts and sample unit are arranged on the sample introduction pipeline, and sample unit is taked sample through described control sample injection unit, and imports in the sample introduction pipeline.
2. a kind of AFS sampling device according to claim 1 is characterized in that,
Said control sample injection unit comprises operation valve and syringe pump, adopts helicitic texture to connect between said operation valve and the syringe pump; Said operation valve that links together and syringe pump are arranged on the said sample introduction pipeline.Said syringe pump is for promoting the device that piston moves reciprocatingly, by motor-driven.
3. a kind of AFS sampling device according to claim 2 is characterized in that,
Described operation valve is the two-bit triplet solenoid valve, has three passages of two valve position.
4. a kind of AFS sampling device according to claim 1 is characterized in that,
Described sample unit comprises sampling pipe and sampling ring; Said sampling pipe is arranged on an end of said sample lines; Said sampling ring is one section pipeline between from the sampling pipe to the electromagnetic valve entrance; Described sample lines imports current-carrying or sample respectively.
5. a kind of AFS sampling device according to claim 1 is characterized in that,
On said sample lines, also be loaded with peristaltic pump, after said peristaltic pump was arranged on said control sample injection unit, sample imported reactor through said peristaltic pump.
6. a kind of AFS sampling device according to claim 4 is characterized in that,
Described current-carrying is the hydrochloric acid of 1%-10% (V/V) concentration for promoting the liquid of sample solution and detergent line.
7 a kind of AFS sampling devices according to claim 1 is characterized in that,
Said sampling device also comprises reductive agent sample introduction pipeline, and on said reductive agent sample introduction pipeline, also is provided with peristaltic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202968517U CN202177577U (en) | 2011-08-15 | 2011-08-15 | Sample introduction device for atomic fluorescence spectroscopy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202968517U CN202177577U (en) | 2011-08-15 | 2011-08-15 | Sample introduction device for atomic fluorescence spectroscopy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202177577U true CN202177577U (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202968517U Expired - Lifetime CN202177577U (en) | 2011-08-15 | 2011-08-15 | Sample introduction device for atomic fluorescence spectroscopy |
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| Country | Link |
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| CN (1) | CN202177577U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018227A (en) * | 2012-12-27 | 2013-04-03 | 江苏德林环保技术有限公司 | On-line in-water heavy metal monitor based on atomic fluorescence spectroscopy |
| CN103063477A (en) * | 2012-12-16 | 2013-04-24 | 中冶美利浆纸有限公司 | Sizing agent sampling device under high temperature and high pressure |
| 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 |
-
2011
- 2011-08-15 CN CN2011202968517U patent/CN202177577U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063477A (en) * | 2012-12-16 | 2013-04-24 | 中冶美利浆纸有限公司 | Sizing agent sampling device under high temperature and high pressure |
| CN103018227A (en) * | 2012-12-27 | 2013-04-03 | 江苏德林环保技术有限公司 | On-line in-water heavy metal monitor based on atomic fluorescence spectroscopy |
| 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 |
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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 |
|
| 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 |
|
| 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 1, 5 East Jiuxianqiao Road, Beijing, Chaoyang District Patentee before: Beijing Ruiguang Instrument Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| 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. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |