CN205643264U - Gaseous transmission and detection device of gas chromatography sample - Google Patents
Gaseous transmission and detection device of gas chromatography sample Download PDFInfo
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- CN205643264U CN205643264U CN201620506390.4U CN201620506390U CN205643264U CN 205643264 U CN205643264 U CN 205643264U CN 201620506390 U CN201620506390 U CN 201620506390U CN 205643264 U CN205643264 U CN 205643264U
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Abstract
The utility model discloses a gaseous transmission and detection device of gas chromatography sample, including the head space injector, the exit linkage three way connection's of head space injector import, the one end of three way connection's first exit linkage gas transfer pipe, a gas chromatograph is connected to the other end of gas transfer pipe, the one end of three way connection's the 2nd gas transfer of second exit linkage pipe, the 2nd gas chromatograph is connected to the other end of the 2nd gas transfer pipe, first export and second exit at three way connection all are provided with the valve. Through the control to the valve, can realize head space injector and two gas chromatograph switchings within a definite time to avoided the head space injector only to be connected with a gas chromatograph, when needing to be changed gas chromatograph, the operator need manage gas transfer from a gas chromatograph switches to another gas chromatograph's inconvenience, has reduced operator's intensity of labour, has improved work efficiency.
Description
Technical field
This utility model belongs to food inspection instrument field, has particularly related to a kind of gas chromatography sample
The transmission of gas and detection device.
Background technology
Food-safety problem has been a global topic, and food safety malignant event constantly occurs in the world,
Cause huge economic loss.Food-safety problem mainly includes the following aspects: chemical hazard, life
The harm of thing toxin, microbes, food adulteration and the safety issue of Genetic engineering food.
According to World Health Organization (WHO) and the report of Center for Disease Control (CDC), the food pollution event 40% in Europe occurs
In individual family；And only U.S., the most just there are the raw food origin diseases of 76,000,000 Crinis Carbonisatus and 5000 people dead
Die；In China, the pollution at the water sources such as microorganism pollution, pesticide residues, rivers and lakes and coastal waters and illegal
Adding hormone and medicine etc. is the unsafe key factor of food, and the chemical safety sex chromosome mosaicism of " vegetable basket " is with agriculture
Medicine and residue of veterinary drug, environmental contaminants and mycotoxin etc. pollute the most prominent, and vegetable and fruit pesticide is (such as chlorine cyanogen
Chrysanthemum ester) event such as residual exceeds standard, the acute poisoning that illegally uses veterinary drug (such as clenbuterol hydrochloride) to cause had a strong impact on me
The development of state's grocery trade.
Food safety detection is to the harmful substance detecting in food according to state quota, and mainly some are harmful to
The detection of poisonous index, such as heavy metal, aflatoxin etc..Chromatographic technique substantially a kind of physics
Chemical Decomposition method, i.e. when biphase performing relative motion, owing to different materials is at biphase (fixing phase and stream
Dynamic phase) in there is different partition coefficients (or adsorption coefficient), by constantly distribution, (i.e. component is between the two phases
Carry out repeated multiple times dissolving, volatilization or adsorption and desorption process) thus reach the purpose that each material is separated.
Chromatographic technique has developed into ripe, has detection sensitivity height, separation efficiency height, selectivity height, inspection
The advantages such as rising limit is low, amount of samples is few, convenient and swift, have been widely used in the safety detection of food industry
In.Gas chromatography is method conventional in chromatograph, it is possible to carry out fast qualitative accurately, delicately with quantitative
Analyze, food safety detection is widely used in natural toxin, pesticide, food additive, veterinary drug etc.
Detection.Currently use gas chromatography time food safety is detected, only draw one from head-space sampler
Bar gas delivery tube, is used gas chromatograph and is connected one to one by gas delivery tube with head-space sampler,
But a gas chromatograph can not meet the needs of all detections, when gas chromatograph changed by needs,
Gas delivery tube is switched to another gas chromatograph from a gas chromatograph, makes troubles to operator.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of during carrying out food inspection,
Facilitate operator switch gas chromatograph gas chromatography sample gas transmission and detection device.
For solving above-mentioned technical problem, the technical solution of the utility model is: gas chromatography sample gas
Transmission and detection device, including head-space sampler, entering of the outlet connecting tee joint of described head-space sampler
Mouthful；First outlet of described three way cock connects one end of the first gas delivery tube, described first gas transmission
The other end of pipe connects the first gas chromatograph；Second outlet of described three way cock connects the second gas transmission
One end of pipe, the other end of described second gas delivery tube connects the second gas chromatograph；Connect described three
Described first outlet of head and described second exit are all provided with valve.
Further, described three way cock is preferably T-shaped three way cock or Y shape three way cock.
Owing to have employed technique scheme, the beneficial effects of the utility model are, gas chromatography sample gas
The transmission of body and detection device, the import of the outlet connecting tee joint of head-space sampler；First gas transmission
First outlet of one end connecting tee joint of pipe, the other end connects the first gas chromatograph；Second gas passes
Second outlet of one end connecting tee joint of defeated pipe, the other end connects the second gas chromatograph；Connect three
First outlet of head and the second exit are all provided with valve, by the control to valve, it is possible to achieve head space
Switching between injector and two gas chromatograpies, thus avoid head-space sampler and a gas chromatogram
Instrument connects, and when gas chromatograph changed by needs, operator needs gas delivery tube from a gas chromatogram
Instrument is switched to the inconvenience of another gas chromatograph, reduces the labor intensity of operator, improves work effect
Rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment；
Fig. 2 is the enlarged drawing of three way cock；
In figure, the direction of arrow represents gas flow；
In figure, 1, head-space sampler, the 21, first gas chromatograph, the 22, second gas chromatograph, 3,
Three way cock, the 31, import, 32, first outlet, the 33, second outlet, the 41, first valve, 42, the
Two valves, the 51, first gas delivery tube, the 52, second gas delivery tube.
Detailed description of the invention
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in Figures 1 and 2, the transmission of gas chromatography sample gas and detection device, enter including head space
Sample device 1, the import 31 of the outlet connecting tee joint 3 of described head-space sampler 1；Described three way cock 3
One end of first outlet 32 connection the first gas delivery tube 51, another of described first gas delivery tube 51
End connects the first gas chromatograph 21；Second outlet 33 connection second gas transmission of described three way cock 3
One end of pipe 52, the other end of described second gas delivery tube 52 connects the second gas chromatograph 22；Institute
State three way cock 3 described first outlet 32 and described second outlet 33 at be all provided with valve.Described three
Pass joint 3 is preferably T-shaped three way cock or Y shape three way cock.
Below in conjunction with a kind of specific embodiment of the present utility model, to using gas phase color of the present utility model
The transmission of spectrometry sample gas and detection device detect the process of sample gas and are described: first enter at head space
Sample to be detected is gasified by sample device 1, according to the needs of sample gas detection, selects connection first
Valve 41 or the second valve 42, make head-space sampler 1 and the first gas chromatograph 21 or the second gas phase
Chromatograph 22 is connected, and sample gas, by the import 31 of T-shaped three way cock 3, enters T-shaped three and connects
Head, through first outlet 32 entrance the first gas chromatograph 21, or through the second outlet 33 entrance second
Gas chromatograph 22, carries out the chromatography of sample.Needs according to experiment detection switch gas chromatograph
Time, can be by the first valve 41 or the connection of the second valve 42 or block be realized.
Although the foregoing describing detailed description of the invention of the present utility model, but those skilled in the art should
Understanding, described embodiment is only a part of embodiment of the present utility model rather than whole enforcement
Example, these are merely illustrative, and protection domain of the present utility model is to be defined by the appended claims.
Those skilled in the art is on the premise of without departing substantially from principle of the present utility model and essence, not through appointing
Under what performing creative labour, these embodiments can be made various changes or modifications, but these changes and
Amendment each falls within protection domain of the present utility model.
Claims (2)
1. gas chromatography sample gas transmission and detection device, including head-space sampler (1), its feature
It is, the import (31) of outlet connecting tee joint (3) of described head-space sampler (1)；Described threeway
First outlet (32) of joint (3) connects one end of the first gas delivery tube (51), described first gas
The other end of transfer tube (51) connects the first gas chromatograph (21)；The second of described three way cock (3)
Outlet (33) connects one end of the second gas delivery tube (52), described second gas delivery tube (52)
The other end connects the second gas chromatograph (22)；Described first outlet (32) described three way cock (3)
Valve all it is provided with described second outlet (33) place.
2. the transmission of gas chromatography sample gas as claimed in claim 1 and detection device, its feature exists
In, described three way cock (3) is T-shaped three way cock or Y shape three way cock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620506390.4U CN205643264U (en) | 2016-05-30 | 2016-05-30 | Gaseous transmission and detection device of gas chromatography sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620506390.4U CN205643264U (en) | 2016-05-30 | 2016-05-30 | Gaseous transmission and detection device of gas chromatography sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205643264U true CN205643264U (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620506390.4U Active CN205643264U (en) | 2016-05-30 | 2016-05-30 | Gaseous transmission and detection device of gas chromatography sample |
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| CN (1) | CN205643264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857879A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Gas weighing device |
-
2016
- 2016-05-30 CN CN201620506390.4U patent/CN205643264U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857879A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Gas weighing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |