CN205958340U - Solvent desorption device - Google Patents
Solvent desorption device Download PDFInfo
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- CN205958340U CN205958340U CN201620156198.7U CN201620156198U CN205958340U CN 205958340 U CN205958340 U CN 205958340U CN 201620156198 U CN201620156198 U CN 201620156198U CN 205958340 U CN205958340 U CN 205958340U
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- solvent
- adsorption tube
- desorption device
- pipeline
- switching valve
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Abstract
The utility model discloses a solvent desorption device with and measuring method, wherein, solvent desorption device includes: a solvent bottle links to each other through pipeline and more than one diverter valve, a pump links to each other with many diverter valves through the pipeline, adsorption tube joint one end is passed through the pipeline and is linked to each other the other end and adsorption tube nested contact with many diverter valves, the receiving flask is located the below of adsorption tube to arrange in on the support. The utility model discloses a pipeline links to each other many diverter valves respectively with solvent bottle, pump and a plurality of adsorption tube that contains stripping liquid, realize desorption and gas purging integration and the desorption of many channel synchronization, and many diverter valves are continuous with the controller among the solvent desorption device moreover, and control stripping liquid's the velocity of flow, volume and dwell time realize the automation mechanized operation, effectively reduce the hand labor to good repeatability has been guaranteed.
Description
Technical field
The utility model is related to solvent desorption field, is specifically related to a kind of targeted by absorption in solid absorbent
Compound carries out the device of solvent desorption.
Background technology
At present, in gas, the detection method of organic matter mainly has solid absorption-Thermal desorption-gas chromatography/gas-chromatography matter
Spectrum combination method and solid absorption-Desorption Gas Chromatography Method/combined gas chromatography mass spectrometry, the former needs special front place
Reason equipment-thermal desorption instrument, thermal desorption instrument complex structure, price, though special thermal desorption pipe is reusable repeatedly, univalent
Height, needs fully aging, analysis cost is higher after using every time；The operation of corresponding instrument equipment also needs the personnel through professional training；
Sample analysis time is long, if no automatic sampler, also needs manually on duty.The latter need not professional pre-processing device, absorption tube single
Use, cost is relatively low, but common stripping liquid is all the organic solvent of toxic and volatile, big to human health damage；During analysis
Glass adsorption tube need to be cut open, adsorbent is taken out and is placed in desorption container, soaked with stripping liquid, operation is cumbersome, have certain
Danger.Mineral wool in adsorption tube or sponge can absorb substantial amounts of stripping liquid, affect desorption effect；And stripping liquid and suction
Attached dose is difficult to separate, and during sample introduction, tiny absorbent particles may enter gas chromatographic sample introduction mouth with stripping liquid, or even
Chromatographic column, pollutes instrument, affects measurement result.
Chinese invention patent (CN103760004A) discloses and a kind of solvent desorption device, including adsorption tube, its feature
It is：Described solvent desorption device also includes：Absorption pipe joint, described absorption pipe joint is used for being adsorbed with described in testing sample
Adsorption tube accesses in desorption stream；Pump, described pump makes stripping liquid circulate to desorb the sample in adsorption tube in desorption stream
To poised state.Present invention also offers a kind of solvent desorption method.The present invention have save time, desorption efficiency is high, desorption repeats
The high advantage of rate.
But, above-mentioned solvent desorption device can not process multiple samples so that operating efficiency is relatively low simultaneously, artificial one-tenth
Originally accordingly increase.
Utility model content
For the above-mentioned problems in the prior art, it is desirable to provide a kind of solvent desorption device, achievable Multi-example
Process simultaneously, reduce the working time, improve operating efficiency.
Concrete technical scheme is as follows：
A kind of solvent desorption device, in order to elute target compound in solid absorbent for the absorption, including：One solvent
Bottle, is connected with a multi-position switching valve by solvent delivery pipeline；One pump, is connected with described multi-position switching valve by pipeline；Some
Individual absorption pipe joint, its one end is connected with described multi-position switching valve by described pipeline, the other end and adsorption tube nested encryptions；If
Dry receiving flask, positioned at the lower section of described adsorption tube, is placed on a support；Wherein, each described absorption pipe joint corresponds to
Adsorption tube described in one, and each receiving flask described in described adsorption tube corresponding；Described multi-position switching valve and solvolysis
The controller inhaled in device is connected, and connects different valves and pump by controller automatic conversion.
In the solvent desorption device that the utility model provides, also have the feature that, the guiding gutter in described support
One waste liquid barrel is connected by described pipeline.
In the solvent desorption device that the utility model provides, also have the feature that, described absorption pipe joint is in loudspeaker
Shape.
In the solvent desorption device that the utility model provides, also have the feature that, described receiving flask and described suction
Adopt gap nested encryptions between attached pipe outlet, and the described bottleneck that accepts is more than described adsorption tube external diameter.
In the solvent desorption device that the utility model provides, also have the feature that, the height of described support can be gone up
Lower freely adjust.
The utility model provide solvent desorption device in, also have the feature that, described pipeline, described pump and
Described multi-position switching valve is all using the inertia material such as high-quality silica gel or polytetrafluoroethylene (PTFE).
In the solvent desorption device that the utility model provides, also have the feature that, the solution of flowing in described pipeline
The flow control of imbibition is in 0.2-1.0ml/min.
The good effect of technique scheme is：
The utility model pass through pipeline by multi-position switching valve respectively with fill the solvent bottle of stripping liquid, pump and several suctions
Attached pipe is connected, and realizes desorption and purges integrated and multi-channel synchronous desorption with gas, and multi-position switching valve and solvent desorption
Controller in device is connected, and controls flow velocity, volume and the time of staying of stripping liquid, realizes automation mechanized operation, effectively reduces people
Work is worked, and ensure that good repeatability.
Brief description
Fig. 1 is the structural representation of the utility model solvent desorption device；
Fig. 2 is the method flow diagram using the utility model solvent desorption device.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, with
Lower embodiment combines accompanying drawing and the solvent desorption device that the utility model provides is specifically addressed.
Fig. 1 is the structural representation of the utility model solvent desorption device；The present embodiment provides a kind of solvent desorption device,
It includes：One solvent bottle 1, a pump 2, a multi-position switching valve 3, several absorption pipe joints 4, some adsorption tubes 5, several acceptance
Bottle 6 and a support 7.
Specifically, solvent bottle 1 is used for depositing stripping liquid, and is connected with multi-position switching valve 3 by solvent delivery pipeline 8；Pump 2
As the power pushing solvent and injection air, and it is connected with multi-position switching valve 3 by pipeline 9；One end of absorption pipe joint 4 leads to
Cross pipeline 9 to be connected with multi-position switching valve 3, the other end and adsorption tube 5 nested encryptions；Receiving flask 6 is located at the lower section of adsorption tube 5, and
It is placed on support 7, and the position of each receiving flask 6 is corresponding with the position of each adsorption tube 5, receive the chemical combination after desorption
Thing.
In a preferred embodiment, in order to avoid pollution and solvent corrosion, pipeline 9, pump 2, multi-position switching valve 3 are equal
Using the inertia material such as high-quality silica gel or polytetrafluoroethylene (PTFE).
In a preferred embodiment, multi-position switching valve 3 is connected with the controller in solvent desorption device, in order to certainly
Connection between dynamic conversion difference valve and pump 2, arranges flow, volume and time of staying of stripping liquid etc. by controller simultaneously
Parameter.
In a preferred embodiment, in order to realize good desorption efficiency, the flow control of stripping liquid can be existed
0.2-1.0ml/min, in addition, the type of flow of stripping liquid can be arrheaed or pulse mode using interval.
In a preferred embodiment, adsorption tube 5 adopts silica gel absorption pipe 5 or charcoal absorption pipe 5.
In a preferred embodiment, absorption pipe joint 4 adopts high-quality silicon rubber, and adsorbs pipe joint 4 in loudspeaker
Shape, its good airproof performance, it is easy to plug it is adaptable to the adsorption tube 5 of various outer diameter.
In a preferred embodiment, adopt gap nested encryptions between receiving flask 6 and adsorption tube 5 outlet, accept
6 mouthfuls of bottle is more than adsorption tube 5 external diameter, in desorption, the port of export stretch into bottleneck 3-5mm about it is ensured that the uncrossed stream of stripping liquid
Enter in receiving flask 6, and receiving flask 6 volume should be bigger more than 1ml than acceptable solution volume.
In a preferred embodiment, the height of support 7 can freely up and down be adjusted, and is suitable for the absorption of different size
Pipe 5 and receiving flask 6.
As in further preferred embodiment, support 7 guiding gutter connects a waste liquid barrel 10 by pipeline 9, in order to collect
Cleaning solvent or the stripping liquid of imprudence spilling.
Hereinafter, illustrated with a kind of specific embodiment it should be pointed out that described in implementation below it
Structure, technique, selection are only in order to illustrate the feasibility of embodiment, and the intention of unrestricted the utility model protection domain.
When pushing stripping liquid, first solvent bottle 1, pump 2 and multi-position switching valve 3 are interconnected, then passing through pump 2 will
Stripping liquid in solvent bottle 1 is entered in multi-position switching valve 3 by solvent delivery pipeline 8, then passes through controller setting stripping liquid
Flow, the parameter such as volume and time of staying so that stripping liquid passes through pipeline 9 according to the parameter setting flows through and adsorb pipe joint 4,
Enter adsorption tube 5, by the target compound in adsorption tube 5 in the form of dynamic exchange, efficiently desorb, finally flow into and connect
Receive bottle.
When gas purges, close the solvent delivery pipeline 8 between solvent bottle 1 and multi-position switching valve 3, only retain pump 2 with
Passage between multi-position switching valve 3, first passes through the pure air that pump 2 extracts certain volume, then by pure air with certain
Flow velocity push in adsorption tube 5, the stripping liquid remaining in adsorption tube 5 is blown in receiving bottle it is ensured that liquid in receiving bottle
Stability.Wherein, between 20-50ml/min, purge time is between 0.5-2min to the flow velocity general control of purge gas, separately
Outward, purge gas can use bottled high-purity gas, such as high pure nitrogen or air, or purified surrounding air.
Pass through in the present embodiment pipeline 9 by multi-position switching valve 3 respectively with fill the solvent bottle 1 of stripping liquid, pump 2 and some
Individual adsorption tube 5 is connected, and realizes desorption and desorbs with the gas integrated and multi-channel synchronous of purging, and multi-position switching valve 3 with molten
Controller in agent desorption apparatus is connected, and controls flow velocity, volume and the time of staying of stripping liquid, realizes automation mechanized operation, effectively
Reduce hand labor, and ensure that good repeatability.
Fig. 2 is the method flow diagram using the utility model solvent desorption device, and the present embodiment additionally provides a kind of utilization
The method that the target compound adsorbing in solid absorbent is carried out solvent desorption by solvent desorption device.
Step a：Solvent desorption device is installed；
Solvent bottle 1, pump 2 and absorption pipe joint 4 are connected with multi-position switching valve 3 by pipeline 9 respectively, and in solvent
Add enough desorption solvents in bottle 1, and the support 7 that lower end is connected with waste liquid barrel 10 is placed in the lower section of absorption pipe joint 4, simultaneously
The height of adjustment support 7.
Step b：Preliminary drip washing is carried out to solvent desorption device；
Pump 2 extracts appropriate stripping liquid with certain flow velocity from solvent bottle 1 first, and then stripping liquid is through multi-position switching valve
3 and pipeline 9, flow into support 7 from absorption pipe joint 4, finally by the guiding gutter in support 7, stripping liquid is collected in waste liquid
In bucket 10.
Step c：Gas purging is carried out to the solvent desorption device after preliminary drip washing；
Rotate multi-position switching valve 3, close the solvent delivery pipeline 8 between solvent bottle 1 and multi-position switching valve 3, only connect pump 2
Pipeline 9 and multi-position switching valve 3 between, extracts the pure air of certain volume by pump 2, and with certain flow velocity by gas
9 push multi-position switching valve 3 and absorption pipe joint 4 successively by the road, dry up pipeline 9, multi-position switching valve 3 and absorption pipe joint
Stripping liquid in 4.
Step d：Gather a certain amount of sample gas；
One end of adsorption tube 5 is connected with air pump 2 by rubber tube, starts air pump 2, sample gas are filled with adsorption tube 5
In, and the sample gas concentration of adsorption tube 5 inlet end is higher, and the concentration of specimens away from adsorption tube 5 air inlet pipe is relatively low, forms one
Fixed concentration gradient.
Step e：The adsorption tube 5 that will be equipped with sample gas loads in solvent desorption device；
The adsorption tube 5 of concentration higher end is connected with absorption pipe joint 4, adsorption tube 5 be aligned of the relatively low one end of concentration
Receiving bottle on frame 7, and the height of the height adjustment bracket 7 according to adsorption tube 5 and receiving bottle, make support 7 stable at one
Suitable position.
Step f：Sample gas in adsorption tube 5 is desorbed；
The parameters such as volume, flow velocity and the time of staying of stripping liquid are arranged by controller, first passes through pump 2 from solvent
A certain amount of stripping liquid is extracted, then stripping liquid, through multidigit switching control valve and absorption pipe joint 4, flows into adsorption tube 5 in bottle 1
In, desorption process is carried out to the sample gas in adsorption tube 5, finally flows in receiving bottle.
Step g：Again gas purge is carried out to solvent desorption device；
After the sample gas in adsorption tube 5 complete desorption, rotate and mostly be switching valve, close solvent bottle 1 and multidigit switching
Solvent delivery pipeline 8 between valve 3, then passes through the pure air that pump 2 extracts certain volume, and by pure air with certain
Flow velocity pushes in adsorption tube 5, and the stripping liquid in multi-position switching valve 3, pipeline 9, absorption pipe joint 4 and adsorption tube 5 is purged into
In receiving bottle.
Step h：Stripping liquid in receiving bottle is measured.
These are only the utility model preferred embodiment, not thereby limit embodiment of the present utility model and protection
Scope, to those skilled in the art it should can appreciate that all utilization the utility model specifications and diagramatic content institute
Scheme obtained by the equivalent made and obvious change, all should be included in protection domain of the present utility model
Interior.
Claims (7)
1. a kind of solvent desorption device, in order to elute target compound in solid absorbent for the absorption it is characterised in that wrapping
Include：
One solvent bottle, is connected with a multi-position switching valve by solvent delivery pipeline；
One pump, is connected with described multi-position switching valve by pipeline；
Several adsorb pipe joint, and its one end is connected with described multi-position switching valve by described pipeline, and the other end is embedding with adsorption tube
Set connects；
Several receiving flasks, positioned at the lower section of described adsorption tube, are placed on a support；
Wherein, each adsorption tube described in described absorption pipe joint corresponding, and each described adsorption tube corresponds to an institute
The receiving flask stated；Described multi-position switching valve is connected with the controller in solvent desorption device, is connected by controller automatic conversion
Different valves and pump.
2. solvent desorption device according to claim 1 is it is characterised in that the guiding gutter in described support passes through described pipe
Road connects a waste liquid barrel.
3. solvent desorption device according to claim 1 is it is characterised in that described absorption pipe joint is in horn-like.
4. solvent desorption device according to claim 1 is it is characterised in that described receiving flask and described adsorption tube export it
Between adopt gap nested encryptions, and described accept bottleneck be more than described adsorption tube external diameter.
5. solvent desorption device according to claim 1 is it is characterised in that the height of described support can freely up and down be adjusted
Section.
6. solvent desorption device according to claim 1 is it is characterised in that described pipeline, described pump and described multidigit
Switching valve is all using silica gel or polytetrafluoroethylene (PTFE) inertia material.
7. solvent desorption device according to claim 1 it is characterised in that in described pipeline flowing stripping liquid flow velocity
Control in 0.2-1.0ml/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620156198.7U CN205958340U (en) | 2016-03-01 | 2016-03-01 | Solvent desorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620156198.7U CN205958340U (en) | 2016-03-01 | 2016-03-01 | Solvent desorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205958340U true CN205958340U (en) | 2017-02-15 |
Family
ID=57966656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620156198.7U Expired - Fee Related CN205958340U (en) | 2016-03-01 | 2016-03-01 | Solvent desorption device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205958340U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758699A (en) * | 2016-03-01 | 2016-07-13 | 宁波市机电工业研究设计院有限公司 | Solvent desorbing device and determination method thereof |
| CN105911197B (en) * | 2016-05-25 | 2018-06-29 | 延边大学 | Automatic sample thermal desorption and liquid phase microemulsion preconcentrate device |
-
2016
- 2016-03-01 CN CN201620156198.7U patent/CN205958340U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758699A (en) * | 2016-03-01 | 2016-07-13 | 宁波市机电工业研究设计院有限公司 | Solvent desorbing device and determination method thereof |
| CN105758699B (en) * | 2016-03-01 | 2019-11-12 | 宁波市机电工业研究设计院有限公司 | A kind of solvent desorption device and its measuring method |
| CN105911197B (en) * | 2016-05-25 | 2018-06-29 | 延边大学 | Automatic sample thermal desorption and liquid phase microemulsion preconcentrate device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20200301 |