CN203519375U - Airflow type combustible liquid sample extraction device - Google Patents
Airflow type combustible liquid sample extraction device Download PDFInfo
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- CN203519375U CN203519375U CN201320580611.9U CN201320580611U CN203519375U CN 203519375 U CN203519375 U CN 203519375U CN 201320580611 U CN201320580611 U CN 201320580611U CN 203519375 U CN203519375 U CN 203519375U
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- ferrule fitting
- control box
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- bucket
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Abstract
The utility model discloses an airflow type combustible liquid sample extraction device, and belongs to the field of combustible liquid sample treatment. The airflow type combustible liquid sample extraction device is a sealed system. A sampling pump is used for enabling air in an inner bucket to flow so as to drive a target to continuously move towards a sampling tube or a needle joint, the target is adsorbed when passing through the sampling tube or the needle joint, and the process is continuously repeated until the extraction is finished. According to the device, the air in the inner bucket is circulated, so that the rate of volatilization of the target from a sample substrate is increased, and the speed of mass transfer of the target to the sampling tube or the needle joint is also increased to finally increase the enrichment ratio of the target; the device also has headspace and purging trapping functions, and is short in sample extraction and analysis time, relatively low in detection limit and high in sensitivity.
Description
Technical field
The utility model belongs to flammable liquid sample preparation field, is specifically related to a kind of air-flowing type flammable liquid sample extraction device.
Background technology
Can the extraction of criminal-scene flammable liquid material evidence of setting fire be the basis of check, in site inspection, extract accurately and effectively flammable liquid material evidence, very big for check work influence.The use of various analysis of modernization instruments, makes the required sample size of flammable liquid examination of material evidence more and more less, if the sample less than denier is extracted in site inspection, the effect of instrument just can not be given full play of.The performance that site inspection extraction affects instrument detectability is comparatively general phenomenon.
Although be equipped with > > standard according to GA502-2004 < < fire supervision technical equipment at present in the fire departments at different levels of the whole nation, assorted that instrument and equipment is reconnoitred in the scene of a fire, tool box and individual protective equipment are reconnoitred in special use, but in these equipments, be used in not having that torch job evidence at the scene extracts.After the on-the-spot discovery of the case flammable liquid of setting fire exists; scene of a fire explorer often can extract the carriers such as near carbonide point of origin, cement flooring, ceramic tile, wood floors, earth, container and be sent to laboratory and extract evaluation; but in some cases; as too large in carrier and in cannot whole situation about extracting; on-the-spot extraction is necessary; also some unnecessary programs have been reduced simultaneously; avoid making the secondary pollution of paired samples, so the on-the-spot extraction equipment of exploitation flammable liquid material evidence is the very real problem that current public security fire-fighting and criminal investigation department face.
Summary of the invention
For the deficiencies in the prior art, the utility model proposes a kind of air-flowing type flammable liquid sample extraction device, to reach the contact probability that increases object and extraction figure layer, realize the accumulation rate, the extraction ratio that improve object, shorten the object of extraction time.
A kind of air-flowing type flammable liquid sample extraction device, comprise control box and extract bucket, control box is arranged at a side of extracting bucket, wherein, control box comprises sampling pump, temp controlled meter, the first ferrule fitting, the second ferrule fitting, the 3rd ferrule fitting, the 4th ferrule fitting and switch, described sampling pump is arranged at inner also its air intake opening of control box and by wireway, connects the gas outlet of the first ferrule fitting, the first described ferrule fitting passes through the upper end platen of control box, and is fixed on platen one end of control box upper end; The gas outlet of sampling pump connects the air intake opening of the second ferrule fitting by wireway, the second ferrule fitting passes through the upper end platen of control box, and is fixed on platen one end of control box upper end; The air intake opening of the first described ferrule fitting connects the gas outlet of the 3rd ferrule fitting by sampling pipe, the 3rd ferrule fitting passes through the upper end platen of control box, and is fixed on the platen other end of control box upper end; The air intake opening of the 3rd described ferrule fitting connects the gas outlet of the 4th ferrule fitting by wireway, the 4th ferrule fitting passes through the upper end platen of control box, and is fixed on the platen other end of control box upper end; Described temp controlled meter by and be fixed on the platen of control box upper end; Described switch is arranged on the platen of control box upper end;
Described extraction bucket comprises heat-insulation layer, electrothermal ring, electric cup, interior bucket, upper cover, the 5th ferrule fitting, the 6th ferrule fitting and pin connectors, wherein, described heat-insulation layer is arranged between the outer cover and electric cup that extracts bucket, and between above-mentioned heat-insulation layer and electric cup, be also provided with electrothermal ring, the inside of electric cup is placed with interior bucket; Described upper cover is connected with interior bucket by screw, and described upper cover center is provided with pin connectors, and this pin connectors is passed through upper cover; The 5th described ferrule fitting by and be fixed on and cover, its air intake opening connects the gas outlet of the second ferrule fitting, the inner wireway of bucket in its gas outlet connects; The 6th described ferrule fitting by and be fixed on and cover, its gas outlet connects the air intake opening of the 4th ferrule fitting by wireway.
Described pin connectors comprises fine thread joint and coarse thread joint, wherein, lower end and the upper cover of fine thread joint are threaded connection, and the upper end of coarse thread joint and fine thread joint is threaded connection, and are provided with sealing gasket between coarse thread joint and fine thread joint.
On described, cover and be provided with O-ring seal.
The output terminal of described temp controlled meter connects the input end of electrothermal ring, the input end connecting valve Yi road output terminal of temp controlled meter; Another road output terminal of the input end connecting valve of sampling pump.
The utility model advantage:
A kind of air-flowing type flammable liquid of the utility model sample extraction device, this air-flowing type flammable liquid sample extraction device is closed system, utilize sampling pump to make interior bucket Air Flow and drive object constantly to sampling pipe or pin connectors motion, when through sampling pipe or pin connectors, object is adsorbed, this process is constantly repeated, until extract, finish, by the air of the interior bucket that circulates, both improved the speed that object volatilizees from sample substrate, increased again the mass transfer velocity of object to sampling pipe or pin connectors, finally increased the accumulation rate of object, this device has head space and purge and trap function simultaneously, sample extraction is short analysis time, can obtain lower detection limit and high sensitivity.
Accompanying drawing explanation
Fig. 1 is the one-piece construction block diagram of a kind of embodiment of the utility model;
Fig. 2 is the control box structure cut-open view of a kind of embodiment of the utility model;
Fig. 3 is the control box structure vertical view of a kind of embodiment of the utility model;
Fig. 4 is the extraction barrel structure cut-open view of a kind of embodiment of the utility model;
Fig. 5 is the control box structure vertical view of a kind of embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, a kind of embodiment of the utility model is described further.
As shown in Figure 1, a kind of air-flowing type flammable liquid sample extraction device, comprises control box 1 and extracts bucket 2, control box 1 is arranged at a side of extracting bucket 2; Wherein:
As shown in Figures 2 and 3, control box 1 comprises sampling pump 1-1, temp controlled meter 1-2, the first ferrule fitting 1-3, the second ferrule fitting 1-4, the 3rd ferrule fitting 1-5, the 4th ferrule fitting 1-6 and switch 1-7, described sampling pump 1-1 is arranged at inner also its air intake opening of control box 1 and by wireway, connects the gas outlet of the first ferrule fitting 1-3, the first described ferrule fitting 1-3 passes through the upper end platen of control box 1, and is fixed on platen one end of control box 1 upper end; The gas outlet of sampling pump 1-1 connects the air intake opening of the second ferrule fitting 1-4 by wireway, the second ferrule fitting 1-4 passes through the upper end platen of control box 1, and is fixed on platen one end of control box 1 upper end; The air intake opening of the first described ferrule fitting 1-3 connects the gas outlet of the 3rd ferrule fitting 1-5 by sampling pipe, the 3rd ferrule fitting 1-5 passes through the upper end platen of control box 1, and is fixed on the platen other end of control box 1 upper end; The air intake opening of the 3rd described ferrule fitting 1-5 connects the gas outlet of the 4th ferrule fitting 1-6 by wireway, the 4th ferrule fitting 1-6 passes through the upper end platen of control box 1, and is fixed on the platen other end of control box 1 upper end; Described temp controlled meter 1-2 by and be fixed on the platen of control box 1 upper end; Described switch 1-7 is arranged on the platen of control box 1 upper end;
As shown in Figure 4 and Figure 5, described extraction bucket 2 comprises heat-insulation layer 2-1, electrothermal ring 2-2, electric cup 2-3, interior bucket 2-4, upper cover 2-5, the 5th ferrule fitting 2-6, the 6th ferrule fitting 2-7 and pin connectors 2-8, wherein, described heat-insulation layer 2-1 is arranged between the outer cover and electric cup 2-3 that extracts bucket 2, and between above-mentioned heat-insulation layer 2-1 and electric cup 2-3, be also provided with electrothermal ring 2-2, the inside of electric cup 2-3 is placed with interior bucket 2-4; Described upper cover 2-5 is connected with interior bucket 2-4 by screw, and described upper cover 2-5 center is provided with pin connectors 2-8, and this pin connectors 2-8 is by upper cover 2-5; The 5th described ferrule fitting 2-6 by and to be fixed on upper cover 2-5 upper, its air intake opening connects the gas outlet of the second ferrule fitting 1-4, the wireway of bucket 2-4 inside in its gas outlet connects; The 6th described ferrule fitting 2-7 by and to be fixed on upper cover 2-5 upper, its gas outlet connects the air intake opening of the 4th ferrule fitting 1-6 by wireway.
Described pin connectors 2-8 comprises fine thread joint and coarse thread joint, wherein, the lower end of fine thread joint and upper cover 2-5 are threaded connection, and the upper end of coarse thread joint and fine thread joint is threaded connection, and are provided with sealing gasket between coarse thread joint and fine thread joint.On described upper cover 2-5, be provided with O-ring seal.
The output terminal of described temp controlled meter 1-2 connects the input end of electrothermal ring 2-2, the input end connecting valve 1-7 mono-road output terminal of temp controlled meter 1-2; Another road output terminal of the input end connecting valve 1-7 of sampling pump 1-1.In the present embodiment, the model of temp controlled meter is model: XMT800.
In the present embodiment, described pin connectors 2-8 and sampling pipe extract coating and are respectively PDMS(dimethyl silicone polymer) and TENAX-TA.
The course of work of the present utility model is:
Sample is put into bucket 2-4, cover upper cover 2-5 housing screw, sample is sealed in interior bucket; Then sampling pipe is connected into the first ferrule fitting 1-3 and the 3rd ferrule fitting 1-5, adjusts temp controlled meter 1-2 and set the temperature of extracting, press switch 1-7 on the panel board extraction that starts to circulate, after half an hour, take off above-mentioned sampling pipe and carry out instrumental analysis.
The present invention reaches good extraction effect to object in actual leaching process, in the present embodiment, usining respectively phenanthrene, anthracene, firefly anthracene and pyrene extracts as target compound, extracting result and Static Headspace contrasts, wherein, extraction conditions is as follows: at interior bucket, add object 80ng, extraction coating is PDMS, interior barrel temperature is 50 ℃, and extraction time is 30min.Table 1 is air-flowing type flammable liquid sample extraction device and Static Headspace extraction element contrast table (in table, data are every kind of object and the ratio of the luxuriant and rich with fragrance peak area of internal standard compound d10-):
Table 1
As can be seen from Table 1, under the same conditions, air-flowing type is extracted higher than the accumulation rate that waits for head space extraction quietly.
Claims (4)
1. an air-flowing type flammable liquid sample extraction device, it is characterized in that: comprise control box (1) and extract bucket (2), control box (1) is arranged at a side of extracting bucket (2), wherein, control box (1) comprises sampling pump (1-1), temp controlled meter (1-2), the first ferrule fitting (1-3), the second ferrule fitting (1-4), the 3rd ferrule fitting (1-5), the 4th ferrule fitting (1-6) and switch (1-7), described sampling pump (1-1) is arranged at inner also its air intake opening of control box (1) and by wireway, connects the gas outlet of the first ferrule fitting (1-3), described the first ferrule fitting (1-3) is by the upper end platen of control box (1), and be fixed on platen one end of control box (1) upper end, the gas outlet of sampling pump (1-1) connects the air intake opening of the second ferrule fitting (1-4) by wireway, the second ferrule fitting (1-4) passes through the upper end platen of control box (1), and is fixed on platen one end of control box (1) upper end, the air intake opening of described the first ferrule fitting (1-3) connects the gas outlet of the 3rd ferrule fitting (1-5) by sampling pipe, the 3rd ferrule fitting (1-5) passes through the upper end platen of control box (1), and is fixed on the platen other end of control box (1) upper end, the air intake opening of the 3rd described ferrule fitting (1-5) connects the gas outlet of the 4th ferrule fitting (1-6) by wireway, the 4th ferrule fitting (1-6) passes through the upper end platen of control box (1), and is fixed on the platen other end of control box (1) upper end, described temp controlled meter (1-2) by and be fixed on the platen of control box (1) upper end, described switch (1-7) is arranged on the platen of control box (1) upper end,
Described extraction bucket (2) comprises heat-insulation layer (2-1), electrothermal ring (2-2), electric cup (2-3), interior bucket (2-4), upper cover (2-5), the 5th ferrule fitting (2-6), the 6th ferrule fitting (2-7) and pin connectors (2-8), wherein, described heat-insulation layer (2-1) is arranged between the outer cover and electric cup (2-3) that extracts bucket (2), and between above-mentioned heat-insulation layer (2-1) and electric cup (2-3), be also provided with electrothermal ring (2-2), the inside of electric cup (2-3) is placed with interior bucket (2-4); Described upper cover (2-5) is connected with interior bucket (2-4) by screw, and described upper cover (2-5) center is provided with pin connectors (2-8), and this pin connectors (2-8) is passed through upper cover (2-5); The 5th described ferrule fitting (2-6) by and to be fixed on upper cover (2-5) upper, its air intake opening connects the gas outlet of the second ferrule fitting (1-4), inner wireway of bucket (2-4) in its gas outlet connects; The 6th described ferrule fitting (2-7) by and to be fixed on upper cover (2-5) upper, its gas outlet connects the air intake opening of the 4th ferrule fitting (1-6) by wireway.
2. air-flowing type flammable liquid sample extraction device according to claim 1, it is characterized in that: described pin connectors (2-8) comprises fine thread joint and coarse thread joint, wherein, the lower end of fine thread joint and upper cover (2-5) are threaded connection, the upper end of coarse thread joint and fine thread joint is threaded connection, and is provided with sealing gasket between coarse thread joint and fine thread joint.
3. air-flowing type flammable liquid sample extraction device according to claim 1, is characterized in that: on described upper cover (2-5), be provided with O-ring seal.
4. air-flowing type flammable liquid sample extraction device according to claim 1, it is characterized in that: the output terminal of described temp controlled meter (1-2) connects the input end of electrothermal ring (2-2), input end connecting valve (1-7) the Yi road output terminal of temp controlled meter (1-2); Another road output terminal of the input end connecting valve (1-7) of sampling pump (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320580611.9U CN203519375U (en) | 2013-09-18 | 2013-09-18 | Airflow type combustible liquid sample extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320580611.9U CN203519375U (en) | 2013-09-18 | 2013-09-18 | Airflow type combustible liquid sample extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519375U true CN203519375U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320580611.9U Expired - Fee Related CN203519375U (en) | 2013-09-18 | 2013-09-18 | Airflow type combustible liquid sample extraction device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203519375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238663A (en) * | 2017-05-04 | 2017-10-10 | 北京博赛德科技有限公司 | The system and method for residue composition after the detection burning of large volume head-space sampler |
| CN110327995A (en) * | 2019-07-23 | 2019-10-15 | 公安部物证鉴定中心 | Combustion residue hermetically sealed can |
-
2013
- 2013-09-18 CN CN201320580611.9U patent/CN203519375U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238663A (en) * | 2017-05-04 | 2017-10-10 | 北京博赛德科技有限公司 | The system and method for residue composition after the detection burning of large volume head-space sampler |
| CN107238663B (en) * | 2017-05-04 | 2023-11-24 | 北京博赛德科技有限公司 | System and method for detecting residual components after combustion by using large-volume headspace sampler |
| CN110327995A (en) * | 2019-07-23 | 2019-10-15 | 公安部物证鉴定中心 | Combustion residue hermetically sealed can |
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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 |
Granted publication date: 20140402 Termination date: 20140918 |
|
| EXPY | Termination of patent right or utility model |