CN108226365A - A kind of heating atomization device of evaporative light scattering detector - Google Patents
A kind of heating atomization device of evaporative light scattering detector Download PDFInfo
- Publication number
- CN108226365A CN108226365A CN201810293184.3A CN201810293184A CN108226365A CN 108226365 A CN108226365 A CN 108226365A CN 201810293184 A CN201810293184 A CN 201810293184A CN 108226365 A CN108226365 A CN 108226365A
- Authority
- CN
- China
- Prior art keywords
- heating
- light scattering
- evaporative light
- atomization
- scattering detector
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/74—Optical detectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
- B05B7/1613—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
Abstract
The invention discloses a kind of heating atomization devices of the good evaporative light scattering detector of atomizing effect, including spray chamber, mist pipe is equipped in spray chamber, one end of mist pipe is equipped with atomizer, atomizer, which is equipped with, to be passed through the liquid-inlet of eluent and is passed through the gas feed of atomization gas, waste liquid outlet is equipped in mist pipe in one end far from atomizer, nozzle is equipped with temperature sensor and the heating tube by temperature sensor control work.
Description
Technical field
The present invention relates to a kind of heating atomization devices of evaporative light scattering detector.
Background technology
Atomization unit is an important component part of evaporative light scattering detector, and effect is by the liquid of ELSD front ends
The eluent of phase chromatographic system outflow carries out atomization and forms aerosol, and moving back aerosol delivery to evaporative light scattering detector
In molten system.Atomising device is to include nozzle, mist pipe and the space for placing nozzle and mist pipe.
There are following some problems at work for existing atomization unit：
1. the atomization process completed in nozzle is a highly endothermic process (such as to be had using methanol and acetonitrile etc. 100%
During solvent), the temperature of nozzle (stainless steel) is caused to maintain a very low level in the instrument course of work.Viscosity
The mobility of the small solution of coefficient (such as aqueous solution and methanol solution) is insensitive to the variation of temperature, as long as temperature is solidifying higher than it
Solid point, atomization can smoothly complete.But the flowing of solution (oily solution) that other viscosity is big becomes temperature
Change is then very sensitive, and when temperature reduces, viscosity is significantly promoted, and the chromatographic column come in from liquid inlet is caused to elute
The mobility of liquid becomes very poor, and liquid " viscous " largely effects on the atomizing effect of nozzle at the aperture of nozzle；But not
Be all situations all using heating atomization, when than if desired for shorter equilibration time, it is necessary to close heating, at this moment subtract
The quantity of solvent being splashed in evaporation process in drift tube is lacked, so as to increase the sensitivity of half volatile sample.
2. the temperature of nozzle is very low during due to atomization, there are many solutes that can crystallize precipitation in nozzle, so as to plug nozzle.
Nozzle is extremely accurate component, after blocking, it is difficult to which cleaning and dredging, can only scrap.
3. the low temperature aerosol after atomization can be spurted into the angle of diverging in mist pipe, in addition to being approximately parallel to mist pipe
The aerosol of axis can be entered by the small locking lid of mist pipe outside subsequent desolvation system, and others can all impinge upon mist pipe
Inner wall on, condense into liquid from waste liquid port flow out, since aerosol is low temperature, the temperature of such mist pipe can drop gradually
Low, outer wall will appear condensed water, and the safety of instrument can be made hidden danger occur.
Invention content
The technical problems to be solved by the invention are：A kind of heating of the good evaporative light scattering detector of atomizing effect is provided
Atomising device.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of evaporative light scattering detector adds
Hot atomising device including spray chamber, is equipped with mist pipe in spray chamber, one end of mist pipe is equipped with atomizer, on atomizer
Equipped with being passed through the liquid-inlet of eluent and being passed through the gas feed of atomization gas, in one far from atomizer in mist pipe
End is equipped with waste liquid outlet, and nozzle is equipped with temperature sensor and the heating tube by temperature sensor control work.
As a preferred solution, the heating tube is coated on outer nozzle wall.
As a preferred solution, the heating tube is arranged on inside nozzle housing.
As a preferred solution, the spray chamber is equipped with hot gas inlet.
As a preferred solution, the spray chamber side wall is equipped with heating unit and for heating unit to be controlled to work
Side wall temperatures sensor.
As a preferred solution, the mist pipe is connected by big locking lid with nozzle.
As a preferred solution, the mist pipe port of export is small equipped with being connected with detector back segment desolvation system
Locking lid.
The beneficial effects of the invention are as follows：It, can be with due to being provided with temperature sensor and nozzle heating tube on atomizer
Heated nozzle is accurately heated, is ensured in atomization process, the temperature in nozzle interior and nozzle tip hole is always held at
One higher state, that is, increase the mobility of solution, and the crystallization that can place solvent is precipitated.On the one hand instrument is improved
Performance, widened the detectable sample scope of instrument, still further aspect also protects nozzle, increase instrument use the longevity
Life.
Since spray chamber is equipped with hot gas inlet, by hot gas inlet, the gas preheated in advance can be blown into, sprays atomization
Space temperature where mouth and mist pipe rises, and reduces the condensation of atomization pipe outer wall, protects instrument, while also contribute to mist
Change the heating of nozzle.
Side wall temperatures sensor due to spray chamber side wall equipped with heating unit and for heating unit to be controlled to work, can
The hot gas being sent into hot gas inlet is heated or is used alone simultaneously, so as to which the temperature for making atomization chamber inner space maintains one
Higher temperature.
Description of the drawings
Fig. 1 is the main structure diagram of the present invention.
In Fig. 1：1 waste liquid outlet, 2 mist pipes, 3 spray chambers, 4 small locking lids, 5 hot gas inlets, 6 big locking lids, 7 nozzles, 8
Heating tube, 9 temperature sensors, 10 gas feeds, 11 liquid-inlets.
Specific embodiment
Below in conjunction with the accompanying drawings, detailed description of the present invention specific embodiment.
As shown in Figure 1, the heating atomization device of evaporative light scattering detector, including spray chamber 3, mist is equipped in spray chamber 3
Change pipe 2, one end of mist pipe 2 is equipped with atomizer 7, and mist pipe 2 is connected by big locking lid 6 with nozzle 7.Mist pipe 2 goes out
Mouth end is equipped with the small locking lid 4 being connected with detector back segment desolvation system.Hot gas inlet 5 is additionally provided on spray chamber 3.
Atomizer 7, which is equipped with, to be passed through the liquid-inlet 11 of eluent and is passed through the gas feed 10 of atomization gas, mist
Change and be equipped with waste liquid outlet 1 on pipe 2 in one end far from atomizer 7, temperature sensor 9 is equipped in nozzle 7 and is passed by temperature
Sensor 9 controls the heating tube 8 of work.
The implementation that the principles and effects of the invention are only illustrated in the above embodiments and part uses
Example, and is not intended to limit the present invention；It should be pointed out that for those of ordinary skill in the art, wound of the present invention is not being departed from
Under the premise of making design, various modifications and improvements can be made, these belong to protection scope of the present invention.
Claims (7)
1. the heating atomization device of evaporative light scattering detector, including spray chamber, it is equipped with mist pipe in spray chamber, the one of mist pipe
End is equipped with atomizer, and atomizer, which is equipped with, to be passed through the liquid-inlet of eluent and be passed through the gas feed of atomization gas,
In mist pipe waste liquid outlet is equipped in one end far from atomizer, it is characterised in that：The atomizer is passed equipped with temperature
Sensor and the heating tube by temperature sensor control work.
2. the heating atomization device of evaporative light scattering detector as described in claim 1, it is characterised in that：The heating tube packet
It overlays on outer nozzle wall.
3. the heating atomization device of evaporative light scattering detector as described in claim 1, it is characterised in that：The heating tube is set
It puts inside nozzle housing.
4. the heating atomization device of evaporative light scattering detector as claimed in claim 2 or claim 3, it is characterised in that：The atomization
Room is equipped with hot gas inlet.
5. the heating atomization device of evaporative light scattering detector as claimed in claim 2 or claim 3, it is characterised in that：The atomization
Room side wall is equipped with heating unit and the side wall temperatures sensor for heating unit to be controlled to work.
6. the heating atomization device of evaporative light scattering detector as claimed in claim 2 or claim 3, it is characterised in that：The atomization
Pipe is connected by big locking lid with nozzle.
7. the heating atomization device of evaporative light scattering detector as claimed in claim 2 or claim 3, it is characterised in that：The atomization
The pipe port of export is equipped with the small locking lid being connected with detector back segment desolvation system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018101755613 | 2018-03-02 | ||
| CN201810175561 | 2018-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108226365A true CN108226365A (en) | 2018-06-29 |
Family
ID=62657918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810293184.3A Pending CN108226365A (en) | 2018-03-02 | 2018-03-30 | A kind of heating atomization device of evaporative light scattering detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108226365A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324704A (en) * | 2021-12-29 | 2022-04-12 | 杭州谱育科技发展有限公司 | Chromatographic detection device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1558914A (en) * | 1967-04-21 | 1969-03-07 | ||
| US4070155A (en) * | 1977-01-19 | 1978-01-24 | Thermo Electron Corporation | Apparatus for chromatographically analyzing a liquid sample |
| US20010001575A1 (en) * | 1997-09-17 | 2001-05-24 | James M. Anderson, Jr. | Low temperature adaptor for evaporative light dectection |
| US20030086092A1 (en) * | 2001-07-11 | 2003-05-08 | Henry Gangloff | Method of controlling an evaporative light scattering detector |
| US20060238744A1 (en) * | 2003-02-25 | 2006-10-26 | O'donohue Stephen J | Apparatus |
| CN201719992U (en) * | 2010-03-31 | 2011-01-26 | 范维林 | Liquid atomized aerosol generator with temperature control |
| CN207964750U (en) * | 2018-03-02 | 2018-10-12 | 苏州赛德福科学仪器有限公司 | A kind of heating atomization device of evaporative light scattering detector |
-
2018
- 2018-03-30 CN CN201810293184.3A patent/CN108226365A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1558914A (en) * | 1967-04-21 | 1969-03-07 | ||
| US4070155A (en) * | 1977-01-19 | 1978-01-24 | Thermo Electron Corporation | Apparatus for chromatographically analyzing a liquid sample |
| US20010001575A1 (en) * | 1997-09-17 | 2001-05-24 | James M. Anderson, Jr. | Low temperature adaptor for evaporative light dectection |
| US20030086092A1 (en) * | 2001-07-11 | 2003-05-08 | Henry Gangloff | Method of controlling an evaporative light scattering detector |
| US20060238744A1 (en) * | 2003-02-25 | 2006-10-26 | O'donohue Stephen J | Apparatus |
| CN201719992U (en) * | 2010-03-31 | 2011-01-26 | 范维林 | Liquid atomized aerosol generator with temperature control |
| CN207964750U (en) * | 2018-03-02 | 2018-10-12 | 苏州赛德福科学仪器有限公司 | A kind of heating atomization device of evaporative light scattering detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324704A (en) * | 2021-12-29 | 2022-04-12 | 杭州谱育科技发展有限公司 | Chromatographic detection device and method |
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