CN212989268U - Condenser tube structure of evaporative light scattering detector - Google Patents
Condenser tube structure of evaporative light scattering detector Download PDFInfo
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- CN212989268U CN212989268U CN202120493731.XU CN202120493731U CN212989268U CN 212989268 U CN212989268 U CN 212989268U CN 202120493731 U CN202120493731 U CN 202120493731U CN 212989268 U CN212989268 U CN 212989268U
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Abstract
The utility model provides an evaporation light scattering detector's condenser pipe structure, including the condenser pipe body, the waste liquid pipe has on the condenser pipe body, still includes waste liquid buffer container, waste liquid discharge port and atmosphere entry have on the waste liquid buffer container, the flowing back end of waste liquid pipe stretches into waste liquid buffer container, the waste liquid discharge port is less than the flowing back end, the atmosphere entry is higher than the flowing back end, just the flow of waste liquid discharge port is less than the flow of flowing back end. The utility model discloses a waste liquid pipe of condenser pipe has increased waste liquid buffer container, can prevent that the sample from getting into waste liquid pipe and causing the loss, and then influences sample peak area repeatability, is favorable to signal detection.
Description
Technical Field
The utility model relates to an evaporation light scattering detector technical field especially relates to an evaporation light scattering detector's condenser tube structure.
Background
An Evaporative Light Scattering Detector (ELSD) is a general purpose liquid phase detector that can simultaneously detect compounds that absorb and do not absorb ultraviolet light. Based on its unique light scattering principle, any non-volatile or slightly volatile sample can be detected without derivatization. Such as carbohydrates, lipids, surfactants, polymers, drugs, amino acids, and natural products, among others. The detection process comprises three steps: (1) atomizing: the effluent of the chromatographic column is mixed with carrier gas through a pinhole of the sprayer to form uniform atomized liquid drops; (2) evaporation of the solvent: the liquid drops pass through a heated drift tube to evaporate the solvent so that sample particles form aerosol; (3) and (3) detection: the sample aerosol particles are detected by a flow cell through a back-scattering photodiode or photomultiplier tube upon "impact" of the light source photons.
After the solution is atomized by the atomizer, as shown in fig. 2, the gas particles need to be screened, and the large particle aerosol is usually condensed by using a condensation pipe 1. Condenser pipe 1 is when out of work, and under atmospheric effect, the liquid seal in it maintains at suitable height, and in the condensation process, the condensate can be followed waste liquid pipe 7 and discharged, and waste liquid outlet department of waste liquid pipe 7 can produce the negative pressure for the liquid seal can't maintain original height, leads to the sample to get into the waste liquid pipe and causes the loss, and then influences sample peak area repeatability. According to the experimental analysis, the method comprises the following steps: this phenomenon has a great influence on the experimental results.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a condenser tube structure of an evaporative light scattering detector.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides an evaporation light scattering detector's condenser pipe structure, includes the condenser pipe body, the condenser pipe body is last to have the waste liquid pipe, its characterized in that still includes waste liquid buffer container, waste liquid discharge port and atmosphere entry have on the waste liquid buffer container, the flowing back end of waste liquid pipe stretches into waste liquid buffer container, the waste liquid discharge port is less than the flowing back end, atmosphere entry is higher than the flowing back end, just the flow of waste liquid discharge port is less than the flow of flowing back end.
The utility model discloses a waste liquid pipe of condenser pipe has increased waste liquid buffer container, can prevent that the sample from getting into waste liquid pipe and causing the loss, and then influences sample peak area repeatability, is favorable to signal detection.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a conventional condenser tube;
fig. 3 is a schematic structural diagram of the inner tube of the present invention.
Detailed Description
As shown in fig. 1, a condensation tube structure of an evaporative light scattering detector includes a condensation tube body 110 and a waste liquid buffer container 120.
The atomizer 2 is fixed at the left input end of the condensation tube body 110, the right output end inner cavity is provided with a section of inner tube 6 which is in arc transition with the outer tube 5 of the output end and extends out, and the aerosol delivery tube 3 is inserted in a tube gap between the outer tube 5 of the right output end of the condensation tube body 110 and the inner tube 6 which is connected with the outer tube into a whole and is connected into a whole by a fixing nut 4 in a screw joint mode.
The shape of the inner tube 6 is as shown in fig. 3, a smooth flowing fluid structure is adopted at the interface part, and the outlet directly extends into the aerosol guiding tube, namely, the inner tube is nested along the transmission direction, so that the airflow flowing through the interface can not generate the vortex phenomenon.
The side of the condensation tube body 110 has a waste liquid tube 111, the waste liquid buffer container 120 has a waste liquid outlet 121 and an atmosphere inlet 122, the liquid discharge end 111a of the waste liquid tube 111 extends into the waste liquid buffer container 120, the waste liquid outlet 121 is lower than the liquid discharge end 111a, the atmosphere inlet 122 is higher than the liquid discharge end 111a, and the flow rate of the waste liquid outlet 121 is smaller than that of the liquid discharge end 111 a. The condensate passes through waste liquid pipe 111 and flows into waste liquid buffer container 120 in, the condensate piles up and does not cross flowing back liquid end 111a in waste liquid buffer container 120 inside, and discharge from waste liquid discharge port 121, atmosphere gets into waste liquid buffer container 120 from atmosphere entry 122 in, make atmosphere can maintain the height of liquid seal in waste liquid pipe 111 through the liquid level in waste liquid buffer container 120, prevent that the sample from getting into the waste liquid pipe and causing the loss, and then influence sample peak area repeatability, be favorable to signal detection.
In this embodiment, the waste liquid buffer container 120 has a spherical shape. Wherein, waste liquid discharge port 121 is located the bottom of waste liquid buffer container 120, and after condenser pipe stop work, can not produce the hydrops in the waste liquid buffer container 120 like this, atmosphere entry 122 is located the upper portion of waste liquid buffer container 120, and waste liquid discharge port 121 and atmosphere entry 122 all arrange to the left side slope.
The condensation tube body 110 and the waste liquid buffer container 120 are made of transparent materials such as glass and quartz, and can be made of various metal materials into opaque forms.
However, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are within the scope of the appended claims as long as they are within the true spirit of the present invention.
Claims (5)
1. The utility model provides an evaporation light scattering detector's condenser pipe structure, includes the condenser pipe body, the condenser pipe body is last to have the waste liquid pipe, its characterized in that still includes waste liquid buffer container, waste liquid discharge port and atmosphere entry have on the waste liquid buffer container, the flowing back end of waste liquid pipe stretches into waste liquid buffer container, the waste liquid discharge port is less than the flowing back end, atmosphere entry is higher than the flowing back end, just the flow of waste liquid discharge port is less than the flow of flowing back end.
2. The condenser tube structure of an evaporative light scattering detector as claimed in claim 1, wherein the waste buffer container is spherical.
3. The condenser tube structure of an evaporative light scattering detector as claimed in claim 2, wherein the waste liquid discharge port is located at a bottom portion of the waste liquid buffer container, and the atmospheric air inlet port is located at an upper portion of the waste liquid buffer container.
4. The condenser tube structure of an evaporative light scattering detector as claimed in claim 3, wherein the waste liquid discharge port and the atmospheric air inlet are both arranged obliquely.
5. The condenser tube structure of an evaporative light scattering detector as claimed in claim 1 or 4, wherein the input end of the condenser tube body is fixed with the atomizer, the output end inner cavity has a section of inner tube extending out of the outer tube of the output end in an arc shape, and the aerosol delivery tube is inserted into the tube gap between the outer tube and the inner tube connected with the outer tube and is screwed into a whole by a fixing nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120493731.XU CN212989268U (en) | 2021-03-09 | 2021-03-09 | Condenser tube structure of evaporative light scattering detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120493731.XU CN212989268U (en) | 2021-03-09 | 2021-03-09 | Condenser tube structure of evaporative light scattering detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212989268U true CN212989268U (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120493731.XU Active CN212989268U (en) | 2021-03-09 | 2021-03-09 | Condenser tube structure of evaporative light scattering detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212989268U (en) |
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2021
- 2021-03-09 CN CN202120493731.XU patent/CN212989268U/en active Active
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