CN207964750U - 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
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- CN207964750U CN207964750U CN201820466766.2U CN201820466766U CN207964750U CN 207964750 U CN207964750 U CN 207964750U CN 201820466766 U CN201820466766 U CN 201820466766U CN 207964750 U CN207964750 U CN 207964750U
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- heating
- atomization
- light scattering
- evaporative light
- scattering detector
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Abstract
The utility model 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, it is equipped with waste liquid outlet in one end far from atomizer in mist pipe, nozzle is equipped with temperature sensor and controls the heating tube of work by temperature sensor.
Description
Technical field
The utility model is related 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 the front ends ELSD
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 the space for including nozzle, mist pipe, and placement nozzle and mist pipe.
There are following some problems at work in 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%
When solvent), cause the temperature of nozzle (stainless steel) 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 for the 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
When being that all situation all uses heating atomization, for example need 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, to increase the sensitivity of half volatile sample.
2. the temperature of nozzle is very low when due to atomization, there are many solutes that can crystallize precipitation in nozzle, to plug nozzle.
Nozzle is the component of extremely precision, 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.
Utility model content
Technical problem to be solved in the utility model is：A kind of good evaporative light scattering detector of atomizing effect is provided
Heating atomization device.
In order to solve the above technical problems, technical solution used by the utility model is：A kind of evaporative light scattering detector
Heating atomization device, including spray chamber is equipped with mist pipe in spray chamber, and one end of mist pipe is equipped with atomizer, atomization spray
Mouth is equipped with being passed through the liquid-inlet of eluent and being passed through the gas feed of atomization gas, far from atomizer in mist pipe
One end be equipped with waste liquid outlet, nozzle be equipped with temperature sensor and by temperature sensor control work heating tube.
As a preferred solution, the heating tube is coated on outer nozzle wall.
As a preferred solution, the heating tube is arranged 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 device and for controlling heating device 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 outlet end is small equipped with being connected with detector back segment desolvation system
Locking lid.
The utility model has the beneficial effects that：Due to being provided with temperature sensor and nozzle heating tube on atomizer,
Heated nozzle can accurately be heated, is ensured in atomization process, the temperature in nozzle interior and nozzle tip hole is protected always
It holds in a relatively high state, that is, increases the mobility of solution, and the crystallization that can place solvent is precipitated.On the one hand it improves
The performance of instrument has widened the detectable sample scope of instrument, and still further aspect also protects nozzle, increases the use of instrument
Service life.
It can be blown into the gas preheated in advance, atomization is made to spray by hot gas inlet since spray chamber is equipped with hot gas inlet
Space temperature where mouth and mist pipe rises, and reduces the condensation of atomization pipe outer wall, protects instrument, while also contributing to mist
Change the heating of nozzle.
The side wall temperatures sensor for being equipped with heating device due to spray chamber side wall and working for controlling heating device, can
The hot gas being sent into hot gas inlet is heated or is used alone simultaneously, to make the temperature of atomization chamber inner space maintain one
Higher temperature.
Description of the drawings
Fig. 1 is the main structure diagram of the utility model.
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 implementation mode
Below in conjunction with the accompanying drawings, the specific embodiment of the utility model is described in detail.
As shown in Figure 1, the heating atomization device of evaporative light scattering detector, including spray chamber 3, spray chamber 3 is interior to be equipped with mist
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 in one end far from atomizer 7 on pipe 2, temperature sensor 9 is equipped in nozzle 7 and is passed by temperature
Sensor 9 controls the heating tube 8 of work.
The principles and effects of the invention are only illustrated in the above embodiments, and the implementation that part uses
Example, rather than limits the present invention；It should be pointed out that for those of ordinary skill in the art, not departing from this hair
Under the premise of bright concept, various modifications and improvements can be made, these belong to the scope of protection of the utility model.
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 that work is controlled by temperature sensor.
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 sets 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 device and the side wall temperatures sensor for controlling heating device 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
Pipe outlet end 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 |
|---|---|---|---|
| CN201820294544 | 2018-03-02 | ||
| CN2018202945447 | 2018-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207964750U true CN207964750U (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820466766.2U Active CN207964750U (en) | 2018-03-02 | 2018-03-30 | A kind of heating atomization device of evaporative light scattering detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226365A (en) * | 2018-03-02 | 2018-06-29 | 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 CN201820466766.2U patent/CN207964750U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226365A (en) * | 2018-03-02 | 2018-06-29 | 苏州赛德福科学仪器有限公司 | A kind of heating atomization device of evaporative light scattering detector |
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