CN214374549U - Flow path structure for cleaning sample injection equipment - Google Patents
Flow path structure for cleaning sample injection equipment Download PDFInfo
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- CN214374549U CN214374549U CN202120436583.8U CN202120436583U CN214374549U CN 214374549 U CN214374549 U CN 214374549U CN 202120436583 U CN202120436583 U CN 202120436583U CN 214374549 U CN214374549 U CN 214374549U
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- flow path
- way valve
- sample injection
- cleaning
- path structure
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Abstract
The utility model discloses a flow path structure for cleaning sample injection equipment, which comprises a multi-way valve and a connecting pipeline connected with each interface of the multi-way valve, wherein the multi-way valve forms a sample injection flow path and a sampling flow path through the connecting pipeline; the multi-way valve is also connected with a liquid storage mechanism, and the liquid storage mechanism is arranged in the sample injection flow path. The utility model discloses can eliminate the phenomenon that the volume of sampling equipment when the appearance is advanced to the first stitch is littleer, guarantee the accuracy that the appearance was advanced to the first stitch.
Description
Technical Field
The utility model relates to an analytical instrument flow path system, in particular to a flow path structure for rinsing sampling equipment.
Background
Generally, the sample injection device needs to be cleaned before use. When cleaning is carried out, the multi-way valve can not switch the flow path, so the sample injection equipment only cleans the sample injection flow path communicated in the sample injection equipment. Because equipment is before using, the multi-way valve does not advance a kind for a long time, and the water film of storage between stator and rotor has volatilized, consequently, can lose the liquid that a part was advanced a kind when cutting the valve for the first time to lead to there being the micro bubble to exist in the liquid way, then when extracting the sample, because there is the negative pressure in the liquid way, the bubble can be elongated, thereby leads to advancing a kind volume and reduce, consequently, the volume will be littleer to advance a kind of first needle of injection equipment.
SUMMERY OF THE UTILITY MODEL
In order to solve the deficiencies in the prior art, the utility model aims to provide a flow path structure for rinsing sampling equipment, this structure can eliminate the phenomenon that the volume is littleer when sampling equipment advances a kind at first needle.
The utility model provides a technical scheme that its technical problem adopted does: a flow path structure for cleaning sample injection equipment comprises a multi-way valve and connecting pipelines connected to each interface of the multi-way valve, wherein the multi-way valve forms a sample injection flow path and a sampling flow path through the connecting pipelines;
the multi-way valve is also connected with a liquid storage mechanism, and the liquid storage mechanism is arranged in the sample injection flow path.
Optionally, the multi-way valve is a six-way valve.
Optionally, the liquid storage mechanism is a dosing ring.
Optionally, the sample injection flow path is provided with an injector, and the sample injection flow path pushes the cleaning solution into the liquid storage mechanism through the injector.
Optionally, the sampling flow path is provided with a chromatography column and a pump.
Optionally, the chromatography column is a liquid chromatography column.
Adopt above-mentioned technical scheme, the utility model discloses a flow path structure for sampling device can soak the rotor and the stator of multi-way valve when wasing, thereby makes to form the water film again between the rotor of multi-way valve and the stator, and effectual preventing is when advancing the appearance, and partial sample solution gets into between the rotor and the stator of multi-way valve, thereby has improved when sampling device first needle advances the appearance, advances the accuracy of appearance volume.
Drawings
FIG. 1 is a schematic view of the flow path of the multi-way valve of the present invention during cleaning;
fig. 2 is a schematic view of the flow path of the multi-way valve of the present invention during sampling.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the utility model discloses a flow path structure for rinsing sampling device has multi-ported valve 1 and connects the connecting line at each interface of multi-ported valve 1 in this flow path, and wherein, multi-ported valve 1 forms into appearance flow path 2 and sample flow path 3 through the connecting line. Additionally, the utility model discloses a multi-way valve 1 still is connected with stock solution mechanism 4, and stock solution mechanism 4 is located in advancing kind flow path 2.
The multi-way valve 1 in the utility model is a six-way valve, an eight-way valve or a ten-way valve. The technical solution of the present invention is illustrated by a six-way valve commonly used in a liquid chromatography system.
Example 1
The six-way valve of the present embodiment has six sub-channels, which are respectively denoted as a, b, c, d, e, f, and a common channel, which is denoted as g. When the six-way valve is used, the rotor of the six-way valve rotates, and the six-way valve is switched in different states.
In this embodiment, the liquid storage mechanism is a quantitative ring, and a syringe 5 is provided in the sample injection channel 2, and the cleaning liquid is pushed into the quantitative ring by the syringe 5. The sampling flow path 3 is provided with a column 6 and a pump 7, wherein the column 6 is a liquid column.
The two ends of the quantitative ring are respectively connected with the interfaces of the channel b and the channel e, the interface of the channel a is connected with the injector 5, the interface of the channel f is connected with the waste liquid pipe, the interface of the channel c is connected with the chromatographic column 6, and the structure of the channel d is connected with the pump 7.
As shown in fig. 1, when the six-way valve is in the cleaning state, the channel a is communicated with the channel b, the channel c is communicated with the channel d, and the channel e is communicated with the channel f, at this time, the rotor of the six-way valve is in a state after rotating, so that the cleaning liquid is introduced into the channel between the rotor and the stator of the six-way valve, and a water film is formed between the rotor and the stator of the six-way valve. Therefore, when the sample feeding action is carried out after the cleaning is finished, the sample solution injected into the quantitative ring can not be absorbed between the rotor and the stator, and the sample solution can be completely injected into the quantitative ring. And finally, the six-way valve is switched to the sampling flow path 3, the flow path structure is shown in fig. 2, at the moment, a water film between the rotor and the stator of the six-way valve is formed, and when sampling is carried out, all the sample solution in the quantitative ring can be pumped into the chromatographic column 6, so that the accuracy when the first needle sampling is carried out is improved.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Besides the technical features described in the specification, other technical features are known to those skilled in the art, and further description of the other technical features is omitted here in order to highlight the innovative features of the present invention.
Claims (6)
1. A flow path structure for cleaning sample injection equipment is characterized by comprising a multi-way valve and connecting pipelines connected to each interface of the multi-way valve, wherein the multi-way valve forms a sample injection flow path and a sampling flow path through the connecting pipelines;
the multi-way valve is also connected with a liquid storage mechanism, and the liquid storage mechanism is arranged in the sample injection flow path.
2. The flow path structure for washing sample introduction devices of claim 1, wherein the multi-way valve is a six-way valve.
3. The flow path structure for cleaning a sample injection device according to claim 2, wherein the liquid storage mechanism is a dosing ring.
4. The flow path structure for cleaning sample introduction equipment according to claim 1, wherein the sample introduction flow path is provided with an injector, and the sample introduction flow path pushes the cleaning solution into the liquid storage mechanism through the injector.
5. The flow path structure for cleaning sample introduction equipment according to claim 1, wherein the sampling flow path is provided with a chromatography column and a pump.
6. The flow path structure for cleaning sample injection equipment according to claim 5, wherein the chromatographic column is a liquid chromatographic column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120436583.8U CN214374549U (en) | 2021-03-01 | 2021-03-01 | Flow path structure for cleaning sample injection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120436583.8U CN214374549U (en) | 2021-03-01 | 2021-03-01 | Flow path structure for cleaning sample injection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214374549U true CN214374549U (en) | 2021-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120436583.8U Active CN214374549U (en) | 2021-03-01 | 2021-03-01 | Flow path structure for cleaning sample injection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214374549U (en) |
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2021
- 2021-03-01 CN CN202120436583.8U patent/CN214374549U/en active Active
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