CN2098034U - Host machine of fake pesticide detector - Google Patents
Host machine of fake pesticide detector Download PDFInfo
- Publication number
- CN2098034U CN2098034U CN 91211676 CN91211676U CN2098034U CN 2098034 U CN2098034 U CN 2098034U CN 91211676 CN91211676 CN 91211676 CN 91211676 U CN91211676 U CN 91211676U CN 2098034 U CN2098034 U CN 2098034U
- Authority
- CN
- China
- Prior art keywords
- chromatographic column
- constant temperature
- conductance cell
- carrier gas
- pesticide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000575 pesticide Substances 0.000 title claims abstract description 25
- 239000012159 carrier gas Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000006200 vaporizer Substances 0.000 claims description 13
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 238000009413 insulation Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000010425 asbestos Substances 0.000 description 5
- 229910052895 riebeckite Inorganic materials 0.000 description 5
- 239000003905 agrochemical Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005264 electron capture Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a host computer of fake and inferior pesticide detector, go up carrier gas control mechanism, the thermal conductivity cell, the chromatographic column, the thermostatic chamber, temperature electrical source controller constitutes, different points lie in with prior art, chromatographic column 22, 23 polarity is different and they and thermal conductivity cell 24 are located same thermostatic chamber 18, in thermostatic chamber 18, thermal conductivity cell 24, chromatographic column 22, 23 all inlay in constant temperature metal block 29, make it compare with current instrument, simple structure has, low cost, with two different general chromatographic columns of polarity, can in time distinguish the fake and inferior advantage of basic unit of pesticide sample when not having the pesticide standard article, be particularly suitable for rural tissue to use.
Description
The utility model relates to a kind of main frame of Pesticides Testing instrument of poor quality, belongs to the instrument field of gas chromatograph.
At present the analysis of agricultural drugs instrument of usefulness generally has thermal conductivity cell detector, flame ionization ditector, and electron capture detector (ECD), flame photometric detector (FPD), but the structure of these instruments more complicated all, price is expensive, and is general more than 20,000 yuan, and needs standard sample of pesticide.The part standard sample of pesticide needs from foreign procurement.Every kind of pesticide sample needs a chromatographic column specially, and general province, city could be equipped with such cover instrument.Be unsuitable at county level, small towns pesticide quality supervisory and management department.But all there are every year a large amount of lawless persons that agricultural chemicals of poor quality is put goods on the market,, make it lead the peasant into a trap, cause great harm to the country, cause a large amount of underproduction of crops owing to can not get timely check.
It is a kind of simple in structure that the purpose of this utility model is to provide, and price is low, can be widely used in the main frame of the Pesticides Testing instrument of poor quality of county, small towns pesticide quality supervisory and management department.This main frame and carrier gas source, registering instrument cooperate, and just can identify agricultural chemicals of poor quality rapidly and easily.
Technical solution of the present utility model is: the main frame of this Pesticides Testing instrument of poor quality by carrier gas control gear 1, receives the vaporizer 11 from described carrier gas control gear 1 carrier gas.Vaporizer 11 also receives pesticide sample except that receiving carrier gas, and with sample vaporization.Reception separates the conductance cell 24 of back component from described chromatographic column 22,23, and its effect is to sign sample component.Constant temperature enclosure 18 and temperature, power-supply controller of electric 2 are formed.Its special character is: the polarity of chromatographic column 22,23 different and they and conductance cell 24 are positioned at same constant temperature enclosure 18.In described constant temperature enclosure 18, conductance cell 24, chromatographic column 22,23 all is embedded in the thermostat metal piece 29.Thermostat metal piece 29 can be aluminium block, copper billet, silver bullion, piece of stainless steel.
Because in the utility model, chromatographic column 22,23 is positioned at same constant temperature enclosure for opposed polarity and they and conductance cell 24, in constant temperature enclosure, be embedded in the derby again, make it compared with prior art, saved a constant temperature enclosure, a cover fan heat transfer system, an one sleeving temperature controller and a cover well heater, structure is simplified greatly, and volume is little, temperature, power-supply controller of electric and original host is integrated becomes a reality.Do not change chromatographic column, do not need standard sample of pesticide, can sign different agricultural chemicals, make the serviceability temperature of conductance cell reduce the sensitivity that has improved instrument.Associated line is short in the constant temperature enclosure, and temperature constant prevents the phenomenon of condensation of gas, and price low (about 5000 yuan every) extensively is suitable for the of poor quality of grass-roots unit's identification agricultural chemicals.
Accompanying drawing and drawing explanation:
The vertical view of an embodiment of Fig. 1-the utility model;
The A-A of Fig. 2-Fig. 1 is to view;
The vertical view of chromatographic column, conductance cell, vaporizer among embodiment of Fig. 3-the utility model;
The B-B of Fig. 4-Fig. 3 is to cut-open view;
The vertical view of thermostat metal piece 29 among Fig. 5-Fig. 4;
The D-D of Fig. 6-Fig. 5 is to view;
The C-C of conductance cell 24 is to view among Fig. 7-Fig. 3;
Fig. 8-process of gas path synoptic diagram of the present utility model;
Fig. 9-the utility model adds the contour structures synoptic diagram behind carrier gas source, the registering instrument.
Wherein: 1-carrier gas control gear, 2-temperature, power-supply controller of electric, the 3-loam cake, the 4-spinner-type flowmeter, 5-needle valve, 6-radiating cap, 7-pesticide sample inlet, the 8-pressure maintaining valve, 9-vaporizer carrier gas inlet, 10-tensimeter, the 11-vaporizer, 12-heater cable joint, 13-temperature umbilical cable joint, 14-conductance cell cable splice, the 15-carrier gas inlet, the 16-exhausr port, the 17-temperature shows millivoltmeter, 18-constant temperature enclosure, 19-temperature control knob, 20-conductance cell constant current source knob, 21-conductance cell draft tube, 22-chromatographic column, the 23-chromatographic column, the 24-conductance cell, the platinum resistance of 25-constant temperature enclosure, 26-constant temperature enclosure thermopair, 27-conductance cell escape pipe, the 28-ceramic fiber blanket, 29-thermostat metal piece, 30-constant temperature enclosure well heater, the 31-asbestos insulating plate, the insulation shell of 32-constant temperature aluminium block, 33-constant temperature enclosure base plate, 34-insulating sleeve, the adiabatic sheet asbestos of 35-, the insulation shell of 36-constant temperature enclosure, the lead of 37-heat conducting element, 38-heat conducting element, the 39-carrier gas source, the 40-reduction valve, 41-registering instrument, 42-soap foam velocimeter.
The utility model is described in further detail below in conjunction with accompanying drawing.In the present embodiment, the thermostat metal piece 29 in the constant temperature enclosure 18 is the constant temperature aluminium block, and its shape such as Fig. 5, shown in Figure 6 are fixed on the insulation shell 32 of constant temperature aluminium block.Inlay conductance cell 24 in the middle, its heat conducting element is made by the rhenium tungsten filament of 130 Ω. Chromatographic column 22,23 is embedded with spiral fashion in the middle part and sidepiece cavity of constant temperature aluminium block, just is conductance cell 24 in the overlay region at the two middle part, and their relative conductance cells are symmetrical.Well heater 30 is equipped with at corresponding conductance cell 24 places in constant temperature aluminium block 29 bottoms, and the following of well heater 30 is the insulation shell 32 and the ceramic fiber blanket 28 of asbestos insulating plate 31, constant temperature aluminium block successively.Asbestos insulating plate 31 is a tabular, the insulation shell 32 of constant temperature aluminium block and ceramic fiber blanket 28 be shaped as Qian shape, surrounded a bottom surface and two sides of constant temperature aluminium block.Bottom, ceramic fiber blanket bottom surface is the insulation shell 36 of adiabatic sheet asbestos 35 and constant temperature enclosure 18 successively, being shaped as of insulation shell 36
Shape, its bottom surface base plate 33 usefulness screws below it connect, and its inboard, middle part of going up links to each other with the dual-side of the insulation shell 32 of constant temperature aluminium block.The lead of conductance cell 24 is drawn by constant temperature enclosure 18 bottom insulating sleeves 34 formed wire guides.The air intake opening of chromatographic column 22,23 is joined with two gas outlets of vaporizer respectively, and its gas outlet input end of two draft tube 21 by conductance cell 24 and conductance cell 24 respectively joins, and the gas in the conductance cell 24 is discharged by escape pipe 27.The spinner-type flowmeter 4 of vaporizer 11 and carrier gas control gear 1, needle valve 5, pressure maintaining valve 8, tensimeter 10 connects.Draw three cables by heater cable joint 12 from temperature, power-supply controller of electric 2 then, temperature umbilical cable joint 13, conductance cell cable splice 14 respectively with the well heater of vaporizer 11, the well heater 30 in the constant temperature enclosure 18: the temperature sensitive member platinum resistance 25 in the constant temperature enclosure 18, the thermopair in thermopair 26 and the vaporizer 11; Current sensing elements in the conductance cell 24 joins.
Its principle of work is as follows.Earlier carrier gas is emitted by carrier gas source 39, through reduction valve 40, enter in the main frame by carrier gas inlet 15, by pressure before the post of tensimeter 10 indication chromatographic columns, by pressure maintaining valve 8, the certain flow velocity of needle valve 5 controls, show the size of flow velocitys by spinner-type flowmeter 4, carrier gas is flowed out from flowmeter and is entered vaporizer 11 through vaporizer carrier gas inlet 9, will be by the pesticide sample pesticide sample after 7 vaporizations of squeezing into that enters the mouth, bring in the chromatographic column, pesticide sample is separated in the chromatographic column flow process, and the component of separating enters in the conductance cell 24 successively, because each component is taken away the heat difference on the tungsten filament, make conductance cell bridge circuit out of trim, produce electric signal.Signal after amplifying is noted by registering instrument 41, carries out qualitative, quantitative peak spectrogram exactly.Each component is emitted by exhausr port 16 with carrier gas by behind the tungsten filament.The effect of soap foam velocimeter 42 is to measure the flow velocity of being discharged carrier gas by the conductance cell exhausr port.
The utility model is to carry out the analysis of common pesticides with the different general chromatographic column of two polarity (be Semi-polarity for low pole).Adopt the two gas circuit relative retention values of twin columns qualitative, response constant standard measure is not having in time to measure the of poor quality of common pesticides under the situation of standard sample of pesticide.
Claims (4)
1, a kind of main frame of Pesticides Testing instrument of poor quality, by carrier gas control gear 1, receive vaporizer 11 from described carrier gas control gear 1 carrier gas, the chromatographic column 22,23 of reception sample after described vaporizer 11 vaporizations, the conductance cell 24 of reception sample component after described chromatographic column 22,23 is separated, constant temperature enclosure 18 and temperature, power-supply controller of electric 2 formed, and it is characterized in that: the polarity of chromatographic column 22,23 different and they and conductance cell 24 are positioned at same constant temperature enclosure 18; In described constant temperature enclosure 18, conductance cell 24, chromatographic column 22,23 all are embedded in the thermostat metal piece 29.
2, by the main frame of the described Pesticides Testing instrument of poor quality of claim 1, it is characterized in that: in described constant temperature enclosure 18, conductance cell 24 is embedded in the middle part of thermostat metal piece 29, and chromatographic column 22,23 is embedded in the thermostat metal piece 29 with spiral fashion and makes conductance cell 24 be positioned at the overlay region, middle part of chromatographic column 22,23.
3, by the main frame of claim 1 or 2 described Pesticides Testing instrument of poor quality, it is characterized in that: described chromatographic column 22 is low pole, and chromatographic column 23 is a Semi-polarity.
4, by the main frame of the described Pesticides Testing instrument of poor quality of claim 3, it is characterized in that: the heat conducting element of described conductance cell 24 is the rhenium tungsten filament of 110～150 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91211676 CN2098034U (en) | 1991-05-14 | 1991-05-14 | Host machine of fake pesticide detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91211676 CN2098034U (en) | 1991-05-14 | 1991-05-14 | Host machine of fake pesticide detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2098034U true CN2098034U (en) | 1992-03-04 |
Family
ID=4920323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91211676 Withdrawn CN2098034U (en) | 1991-05-14 | 1991-05-14 | Host machine of fake pesticide detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2098034U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114101C (en) * | 1998-08-28 | 2003-07-09 | 株式会社岛津制作所 | Sample cooling appts. and method thereof |
| CN101828105B (en) * | 2007-08-08 | 2013-08-07 | 半导体器件以埃尔比特系统-拉斐尔合伙公司 | Thermally based system for detecting counterfeit drugs |
| CN104880527A (en) * | 2015-05-25 | 2015-09-02 | 苏州市华安普电力工程有限公司 | Gas chromatograph |
| CN110554125A (en) * | 2018-05-31 | 2019-12-10 | 滕州市滕海分析仪器有限公司 | thermal conductivity detector, column chamber and installation process of column chamber |
-
1991
- 1991-05-14 CN CN 91211676 patent/CN2098034U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114101C (en) * | 1998-08-28 | 2003-07-09 | 株式会社岛津制作所 | Sample cooling appts. and method thereof |
| CN101828105B (en) * | 2007-08-08 | 2013-08-07 | 半导体器件以埃尔比特系统-拉斐尔合伙公司 | Thermally based system for detecting counterfeit drugs |
| CN104880527A (en) * | 2015-05-25 | 2015-09-02 | 苏州市华安普电力工程有限公司 | Gas chromatograph |
| CN110554125A (en) * | 2018-05-31 | 2019-12-10 | 滕州市滕海分析仪器有限公司 | thermal conductivity detector, column chamber and installation process of column chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |