CN206788103U - A kind of split type thermal desorption sampling device - Google Patents
A kind of split type thermal desorption sampling device Download PDFInfo
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- CN206788103U CN206788103U CN201720698115.1U CN201720698115U CN206788103U CN 206788103 U CN206788103 U CN 206788103U CN 201720698115 U CN201720698115 U CN 201720698115U CN 206788103 U CN206788103 U CN 206788103U
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Abstract
The sampling device in analytical instrument is the utility model is related to, specifically a kind of split type thermal desorption sampling device, it is characterised in that：Described split type thermal desorption sampling device is a kind of split-type structural, mainly include gas heating water diversion part and Thermal desorption chamber upper cover part, both fixed Combinations form hot parser, and wherein Thermal desorption chamber is located on gas heating water diversion part and Thermal desorption chamber among lid.By Split hot resolver provided by the utility model, it can realize and sample is gas phase by solid phase and liquid-phase conversion and is incorporated into the function that analytical instrument detected；Its electronic components complicated without magnetic valve, stepper motor etc. simultaneously, fault rate is low, and small volume, simple in construction, convenient for dismounting and washing.
Description
Technical field
The sampling device in analytical instrument is the utility model is related to, it is specifically a kind of to convert solid, fluid sample
For gaseous sample so as to realizing the device of sample introduction.
Background technology
Ion mobility spectrometry (Ion Mobility Spectrometry, IMS) technology is the one kind occurred the 1970s
Analysis and detection technology, the technology eighties are applied to field assay detection, and its general principle is：Under atmospheric conditions,
Testing sample is ionized to form ion, and the ion of generation moves under the effect of extra electric field power.(it is less than 1000V/ in weak electric field
Cm in the range of), the movement velocity of ion is proportional to electric-field intensity, and ν=KE, ν is the speed of ion here, and E is electric-field intensity,
K is ionic mobility, and the mobility of ion is constant in the range of weak electric field, its numerical value depend primarily on ion structure,
The factors such as the species of quality, charge number and make-up gas, the numerical value of different its mobility of ion are different.So, according to survey
The transit time measured is it is concluded that go out the composition of sample.Simultaneously according to proportional between the logarithm value and peak area of concentration
The relation of example, quantitative calculating can be carried out.
According to IMS principle, IMS is primarily adapted for use in the detection of gaseous sample.But in actual applications, as IMS is wide
The explosive of general application and illicit drugs inspection field, either drugs sample is in largely solid phase or liquid phase state to explosive, therefore
How sample to be effectively rapidly converted into gas phase by solid phase or liquid phase, and introduce IMS systems and detected, being that IMS is actual answers
With one of middle problem for needing to overcome.In the numerous methods for solving this problem, Thermal desorption method is to apply a kind of more sample
Product sample injection method.Such as patent 200710011082.X, CN204088259U, CN203587603U, 200720073480.X and
CN103163013A etc. is that the Thermal desorption of application adds gas flow purging.Although these methods can be realized sample by solid phase or liquid
Mutually it is rapidly converted into gas phase and introduces the function of IMS system detectios, but they is required to the electronic components of complexity, such as electromagnetism
Valve, stepper motor etc., injector volume is big, and electronic components are complicated, and fault rate is high；And because Thermal desorption chamber is an entirety,
Not easy cleaning after pollution.Still propose a kind of new split type thermal desorption sampling device here, without magnetic valve, stepper motor
Deng the accessory of complexity, small volume, fault rate is low, and Thermal desorption chamber is removable, convenient cleaning.
Utility model content
The purpose of this utility model is to provide a kind of split type thermal desorption sampling device, this Split hot resolver energy
Sample for gas phase and is incorporated into the function of IMS system detectios, while its small volume by enough realizations by solid phase and liquid-phase conversion, without
Complicated electronic components, fault rate is low, convenient for dismounting and washing.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of split type thermal desorption sampling device, it is characterised in that：Described split type thermal desorption sampling device includes one
Gas heats water diversion part and a Thermal desorption chamber upper cover part, the Thermal desorption chamber upper cover part and gas heating water diversion part
(1) detachably combine and formed with the Thermal desorption chamber for accommodating sample attachment flaps.
Specifically, described gas heating water diversion part includes gas heating water conservancy diversion main body and is arranged on gas heating water conservancy diversion
Gas feed in main body, gas vent and gas guiding gutter, gas flow guiding geosynclinal concave be trapped in gas heating water diversion part (1) or
Person is highlighted on gas heating water diversion part, and the gas feed, gas flow guiding groove, gas vent are sequentially communicated.
Specifically, described Thermal desorption chamber upper cover part be provided with one be used for gas heating water diversion part coordinate projection or
Caveli body.
Preferably, described gas heating water diversion part and the combination of Thermal desorption chamber upper cover part exist one kind as such scheme
Together, therebetween formed with a slit for plugging sample attachment flaps.
Specifically, described gas heating water diversion part and Thermal desorption chamber upper cover part are grouped together into Split hot
Sampling device is parsed, heater, the Split hot parsing sample introduction dress are additionally provided with the split type thermal desorption sampling device
Put periphery and be enclosed with attemperator.
Preferably, the split type thermal desorption sampling device is additionally provided with temperature for controlling Thermal desorption chamber 100~300
Temperature control equipment between DEG C.
When described split type thermal desorption sampling device works, the sample carrier gas by purification enters gas through gas feed
Heating water diversion part is simultaneously heated, and the carrier gas gas coming through guiding gutter of heating, enters detecting system by gas vent.Work as sample
After attachment flaps insertion sample cell, the sample that adheres to thereon is pyrolyzed analysis chamber heating parsing, the sample that the sample gas of parsing is flowed through
Product carrier gas is taken out of, is sent to instrument and is tested and analyzed.
The advantages of the utility model：
Sample is gas phase by solid phase and liquid-phase conversion by split type thermal desorption sampling device described in the utility model and is drawn
Enter the function to IMS system detectios；
Split type thermal desorption sampling device described in the utility model, the electronics complicated without magnetic valve, stepper motor etc.
Accessory, fault rate is greatly reduced, simultaneously because its is simple in construction, volume can be made very small.
Split type thermal desorption sampling device described in the utility model, hot parser is the combining structure that can be taken apart, square
Just Thermal desorption chamber is cleaned.
Brief description of the drawings
Fig. 1 is the structural representation according to the Split hot resolver of the utility model one embodiment.
Fig. 2 is that gas heats water diversion part structural representation in Fig. 1.
Fig. 3 is Thermal desorption chamber upper cover part structural representation in Fig. 1.
Embodiment
The technical solution of the utility model is described in further detail below by embodiment, and with reference to accompanying drawing.Under
State and referring to the drawings the explanation of the utility model embodiment is intended to solve overall utility model design of the present utility model
Release, without should only be interpreted as to a kind of limitation of the present utility model.
Reference picture 1- Fig. 3, this Split hot resolver include：Covered on gas heating water diversion part (1) and Thermal desorption chamber
Partly (2), two parts fixed Combination just form Split hot desorption apparatus (3) of the present utility model together.In order to realize heat
The effect of parsing, the temperature of thermal analysis apparatus preferably must be held in 100 to 300 DEG C.Therefore, this device has also loaded onto heater
And temperature control equipment (303) (302).Heater (302) can be the heating materials such as heating rod, heating film, can realize
Quick heating to hot parser.Simultaneously constant for keeping temperature, this thermal analysis apparatus should also be in periphery parcel insulation
Device, such as wrap up silica wool insulation material.
Reference picture 1, gas heating water diversion part (1) include gas feed (101), and gas vent (102) and gas are led
Chute (103).Sample carrier gas enters from gas feed (101), is heated simultaneously, the gas of heating flows through guiding gutter, from gas
Outlet (102) flows out into analytical instrument.The effect of guiding gutter (103) is to increase gas flow path, increases gas heated time,
It can be variously-shaped, and illustration is only one kind in its all Multiple Shape.Simultaneously it should be mentioned that there is no gas flow guiding herein
Groove is also possible, and gas flow guiding groove can be a depression or prominent entirety.
Reference picture 2, Thermal desorption chamber upper cover part (2) include a projection for being used to coordinate with gas heating water diversion part (1)
Or caveli body (201), its guiding gutter for heating water diversion part (1) with gas is to cooperate, so as to form Thermal desorption chamber.
Reference picture 1, sample attachment flaps are to be entered by the sample introduction slit of Split hot resolver in Thermal desorption chamber.Enter
Sample slit can be opened on Thermal desorption chamber upper cover part (2) as shown in Figure 1, can also be opened on gas heating water diversion part (1)
(when gas flow guiding groove is recessed on gas flow guiding part (1)).
Reference picture 1, when the sample attachment flaps for being attached with sample are inserted into Thermal desorption chamber by sample introduction slit, sample
Just parsed by high-temperature heating, the clean hot air that the sample gas of parsing is flowed through guiding gutter is taken out of, into analytical instrument such as from
Sub- mobility spectrometer is tested and analyzed.
Claims (6)
- A kind of 1. split type thermal desorption sampling device, it is characterised in that：Described split type thermal desorption sampling device includes a gas Body heating water diversion part (1) and a Thermal desorption chamber upper cover part (2), the Thermal desorption chamber upper cover part and gas heating diversion division (1) is divided detachably to combine and formed with the Thermal desorption chamber for accommodating sample attachment flaps.
- 2. according to the split type thermal desorption sampling device described in claim 1, it is characterised in that：Described gas heating diversion division The gas feed (101) for dividing (1) to include gas heating water conservancy diversion main body and be arranged in gas heating water conservancy diversion main body, gas vent (102) it is recessed in gas heating water diversion part (1) or highlights in gas with gas guiding gutter (103), gas flow guiding groove (103) On body heating water diversion part (1), the gas feed (101), gas flow guiding groove (103), gas vent (102) are sequentially communicated.
- 3. according to the split type thermal desorption sampling device described in claim 1, it is characterised in that：Described Thermal desorption chamber upper cover part (2) are divided to be provided with a raised or sunken cavity (201) for being used to coordinate with gas heating water diversion part (1).
- 4. according to the split type thermal desorption sampling device described in claim 1, it is characterised in that：Described gas heating diversion division (1) and Thermal desorption chamber upper cover part (2) is divided to combine, therebetween formed with a slit for plugging sample attachment flaps (301)。
- 5. according to the split type thermal desorption sampling device described in claim 1, it is characterised in that：Described gas heating diversion division (1) and Thermal desorption chamber upper cover part (2) is divided to be grouped together into split type thermal desorption sampling device (3), the Split hot Heater (302) is additionally provided with parsing sampling device (3), split type thermal desorption sampling device (3) periphery is enclosed with guarantor Warm device.
- 6. according to the split type thermal desorption sampling device described in claim 1, it is characterised in that：The Split hot parses sample introduction Device is additionally provided with temperature control equipment (303) of the temperature between 100~300 DEG C for controlling Thermal desorption chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720698115.1U CN206788103U (en) | 2017-06-15 | 2017-06-15 | A kind of split type thermal desorption sampling device |
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| CN201720698115.1U CN206788103U (en) | 2017-06-15 | 2017-06-15 | A kind of split type thermal desorption sampling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226267A (en) * | 2017-06-15 | 2018-06-29 | 深圳市天和时代电子设备有限公司 | A kind of split type thermal desorption sampling device |
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2017
- 2017-06-15 CN CN201720698115.1U patent/CN206788103U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226267A (en) * | 2017-06-15 | 2018-06-29 | 深圳市天和时代电子设备有限公司 | A kind of split type thermal desorption sampling device |
| CN108226267B (en) * | 2017-06-15 | 2023-09-12 | 深圳市天和时代电子设备有限公司 | Split type thermal analysis sampling device |
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