CN1721022A - Hot gas source negative pressure and environment protection concentration instrument - Google Patents
Hot gas source negative pressure and environment protection concentration instrument Download PDFInfo
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- CN1721022A CN1721022A CN 200510077178 CN200510077178A CN1721022A CN 1721022 A CN1721022 A CN 1721022A CN 200510077178 CN200510077178 CN 200510077178 CN 200510077178 A CN200510077178 A CN 200510077178A CN 1721022 A CN1721022 A CN 1721022A
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- negative pressure
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- environment protection
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Abstract
The present invention relates to experiment device for sample concentration, which comprises air distribution system composed of air source, pressure reducing valve, heating hatch, temperature control device, air distribution hatch cover, air distribution hatch and air blow tubule; sample location frame with calibrated sample concentrator; vacuum system composed of vacuum pump, vacuum hatch and atmospheric valve; and solvent recovery system. Inert gas from air distribution system passes tubule with high speed for the negative pressure of vacuum hatch and differential pressure of two ends of tubule and forms high speed air flow to blow and clean liquid sample in concentration tube, gasify and bring out liquid solvent quickly, and decrease concentration time; meantime, use solvent recovery system to decrease pollution.
Description
Technical field
The present invention relates to the experimental provision that a kind of hot gas source negative pressure and environment protection concentration instrument is used for sample concentration and solvent recovery.
Background technology
Hot gas source negative pressure and environment protection concentration instrument is mainly used in concentrating of the extraction liquids sample that contains organic solvent, but a plurality of samples of single treatment.Usually, hot gas source negative pressure and environment protection concentration instrument is made of air distribution system, sample locating rack, vacuum system and solvent recovering system.Behind the air distribution system of the inert gas of pressurization through band heating temperature control, the air blowing tubule that has pressure reduction by two ends, form the high speed thermal current and be blown into the inspissator that is fixed on the sample locating rack and places terminal band scale, make the volatilization rapidly under negative pressure and thermal current effect of the organic solvent in the sample in the sample concentrator, thereby realize concentrating fast sample in the sample cell.
At present, the device of known Nitrogen evaporator is mainly the normal pressure open type, and purge gas is a normal temperature: on the one hand solvent evaporates does not have recovery, brings environmental pollution, and two need purge gas need add malleation and solvent evaporation rate under normal pressure is relatively slow.Purge gas flow velocity Gao Shifei gas is more, and when gas flow rate hanged down, the solvent evaporates relative velocity was slow.Air distribution system depended on pressure table is regulated, and makes the air-flow shakiness.Also having common heating system is the whole solvent liquid of heating, is easy to generate bumping, makes sample loss.Present Nitrogen evaporator can't satisfy environmental protection, saves inert purge gas and prevent the requirement that the solvent bumping is such.
Summary of the invention
The object of the present invention is to provide a kind of can the purging by the high speed thermal current, negative pressure reduces solvent boiling point, and solvent flashing prevents the solvent bumping fast, reclaims solvent to reduce environmental pollution, improves the device of thickening efficiency.
Structure of the present invention comprises air distribution system, the sample locating rack, solvent recovering system and heater, wherein said air distribution system comprises source of the gas, pressure-reducing valve, the distribution hatchcover, distribution cabin and air blowing tubule, described sample locating rack is provided with the sample fixed mount, on the sample fixed mount, be provided with the sample concentrator of band scale, wherein, described hot gas source negative pressure and environment protection concentration instrument device also comprises vacuum system, described vacuum system comprises vavuum pump, vacuum chamber and atmospheric valve, described solvent recovering system links to each other with vavuum pump, wherein, described air distribution system also comprises heater, described heater is between described pressure-reducing valve and described distribution cabin, and described heater comprises heating compartment body and attemperating unit.
Air blowing tubule diameter is little, and (φ＜1mm) could produce high velocity air like this under there is the situation of pressure reduction on the two sides.
Vacuum chamber is to be made up of the flint glass material, also can select the brown glass material for use, can make like this to see that material that light decomposes also can concentrate and do not decompose.Adjusting vacuum chamber side atmospheric valve can be regulated the vacuum in the vacuum chamber, thereby regulates air velocity, regulates solvent evaporates speed.
The present invention is owing to adopt vacuum-pumping system, make vacuum tank be in negative pressure state, heating back inert gas forms the high speed thermal current at a high speed by the air blowing tubule, purges the fluid sample in the concentration tube, the boiling point of liquid that negative pressure makes reduces, under the high speed thermal current purges, make the liquid flux gasification, taken out of vacuum system, the accelerated solvent volatilization reduces concentration time.Owing to be gas heating, just hot gas contact with the solvent surface, is not to heat whole solvent, can prevent the solvent generation bumping that will concentrate, the loss of minimizing sample.The solvent gas that comes out from vavuum pump is reclaimed by the solvent recovering system of vavuum pump afterbody simultaneously, thereby realizes operation that the solvent in the sample is dried up fast, reduces the pollution to environment simultaneously again.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
As shown in Figure 1, the present invention includes air distribution system, sample locating rack, vacuum system and solvent recovering system.Air distribution system comprises source of the gas 11, pressure-reducing valve 10, heating compartment body 9, attemperating unit 8, distribution hatchcover 6, distribution cabin 5 and air blowing tubule 4, the sample locating rack is provided with sample fixed mount 1, is provided with band scale sample concentrator 2 on the sample fixed mount, vacuum system comprises vavuum pump 12, vacuum chamber 3 and atmospheric valve 7.The equipment connecting structure as shown in the figure, source of the gas 11, pressure-reducing valve 10, heating compartment body 9, and attemperating unit 8 connect and 5 sides, distribution cabin, distribution cabin bottom surface has the fixedly cabin body of air blowing tubule 4, distribution hatchcover 6 is positioned at 5 upper ends, distribution cabin.Distribution cabin 5 is placed on the vacuum chamber 3, combines closely with vacuum chamber 3, when vavuum pump 12 vacuumizes, keeps in the vacuum chamber 3 the certain vacuum degree being arranged.Band scale inspissator 2 is put on the specimen holder 1, in vacuum chamber 3.The vacuum chamber side connects atmospheric valve 7 and vavuum pump 12 interfaces.After pressurized inert gas heats through heating compartment body 9, enter distribution cabin 4, vacuumize the vacuum of adjusting in the vacuum chamber 3 with vent valve 7 through vavuum pump 12, there is the boiling point that reduces solvent in vacuum in the vacuum chamber 3, also make air blowing air blowing tubule 4 two ends produce suitable pressure differential, make air blowing tubule 4 end outlets produce the high speed thermal current, be blown into the sample cell inspissator 2 that is fixed on the sample fixed mount 1, the organic solvent in the inspissator 2 interior samples is volatilized rapidly.The operator is by the variation of sample volume in the brown glass vacuum chamber 3 observation sample pipes, make the operator can when sample dries up just, stop immediately blowing, thereby the assurance analyte is not blown away and stays container bottom, and brown glass vacuum chamber 3 also can reduce the decomposition of seeing the light decomposed substance.From the solvent gas that vavuum pump 12 comes out, useable solvents retracting device 13 recovery at the vavuum pump afterbody reduce the pollution to atmosphere.
Claims (6)
1, a kind of hot gas source negative pressure and environment protection concentration instrument device, comprise air distribution system, the sample locating rack, solvent recovering system and heater, wherein said air distribution system comprises source of the gas, pressure-reducing valve, the distribution hatchcover, distribution cabin and air blowing tubule, described sample locating rack is provided with the sample fixed mount, on the sample fixed mount, be provided with the sample concentrator of band scale, it is characterized in that described hot gas source negative pressure and environment protection concentration instrument device also comprises vacuum system, wherein said vacuum system comprises vavuum pump, vacuum chamber and atmospheric valve, described solvent recovering system links to each other with vavuum pump, described air distribution system also comprises heater, and described heater is between described pressure-reducing valve and described distribution cabin.
2, hot gas source negative pressure and environment protection concentration instrument as claimed in claim 1 is characterized in that described heater comprises heating compartment body and attemperating unit.
3, hot gas source negative pressure and environment protection concentration instrument as claimed in claim 1 is characterized in that described vacuum chamber body is brown or colourless.
4, hot gas source negative pressure and environment protection concentration instrument as claimed in claim 3 is characterized in that described vacuum chamber body made by brown or flint glass material.
5, hot gas source negative pressure and environment protection concentration instrument as claimed in claim 1 is characterized in that described distribution hatchcover by acrylonitrile-butadiene-styrene copolymer, polytetrafluoroethylene (PTFE), and one of polypropylene high molecular material is made.
6, hot gas source negative pressure and environment protection concentration instrument as claimed in claim 1 is characterized in that described solvent recovering system is to add retracting device at the vavuum pump afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510077178 CN1721022A (en) | 2005-06-17 | 2005-06-17 | Hot gas source negative pressure and environment protection concentration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510077178 CN1721022A (en) | 2005-06-17 | 2005-06-17 | Hot gas source negative pressure and environment protection concentration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1721022A true CN1721022A (en) | 2006-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510077178 Pending CN1721022A (en) | 2005-06-17 | 2005-06-17 | Hot gas source negative pressure and environment protection concentration instrument |
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| CN (1) | CN1721022A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983504A (en) * | 2013-02-08 | 2014-08-13 | 复旦大学 | Positive pressure surface layer high temperature rapid condensation method |
| CN112843768A (en) * | 2021-03-04 | 2021-05-28 | 长沙永乐康仪器设备有限公司 | Method and device for recycling concentrated gas for concentrator |
-
2005
- 2005-06-17 CN CN 200510077178 patent/CN1721022A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983504A (en) * | 2013-02-08 | 2014-08-13 | 复旦大学 | Positive pressure surface layer high temperature rapid condensation method |
| CN103983504B (en) * | 2013-02-08 | 2018-02-27 | 复旦大学 | A kind of malleation top layer high temperature rapid concentration method |
| CN112843768A (en) * | 2021-03-04 | 2021-05-28 | 长沙永乐康仪器设备有限公司 | Method and device for recycling concentrated gas for concentrator |
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