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Nozzle of evaporative light-scattering detector

An evaporative light scattering and detector technology, applied in the direction of injection device, liquid injection device, etc., can solve the problems of detector noise at the back end of the instrument and the vibration of the injection needle, and achieve the improvement of directionality, coaxiality, and processing requirements. reduced effect

Pending Publication Date: 2018-06-22
苏州赛德福科学仪器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This structure makes the needle in the nozzle vibrate when it is working, but the slight vibration of the needle will cause the noise of the detector at the back end of the instrument

Method used

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  • Nozzle of evaporative light-scattering detector
  • Nozzle of evaporative light-scattering detector

Examples

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Embodiment Construction

[0026] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] Such as figure 2 As shown, the nozzle of the evaporative light scattering detector includes a main body 1 with a stepped through hole in the middle, a nozzle plate 8 is provided at one end of the main body 1, and a sealing ring 10 is provided at the joint surface between the main body 1 and the nozzle plate 8. The nozzle plate 8 is provided with spray holes, and the inner side of the nozzle plate 8 is provided with a guiding tapered surface at the spray hole opening.

[0028] The middle part of the main body 1 is embedded with a shock-absorbing sleeve 9, and the shock-absorbing sleeve 9 is provided with a support hole coaxial with the through hole in the main body 1 for the injection needle to pass through and provide support for the injection needle.

[0029] In the main body 1, a compression pad 1 is provided on the side of the shoc...

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Abstract

The invention discloses a nozzle of an evaporative light-scattering detector. The atomizing effect of the nozzle is good. The nozzle comprises a body with a stepped through hole formed in the middle,a nozzle plate is arranged at one end of the body, a sealing ring is arranged on the junction surface between the body and the nozzle plate, a spray hole is formed in the nozzle plate, a damping sleeve is embedded into the middle in the body, a supporting hole which is coaxial with the through hole in the body, and enables a spray needle to penetrate through and supports the spray needle is formedin the damping sleeve, a pressing cushion is arranged on the side, away from the nozzle plate, in the body, a sealing supporting sleeve is arranged in the pressing cushion, the spray needle penetrates into the sealing supporting sleeve, an eluant inflow connector pushing and abutting against the pressing cushion is arranged at the other end of the body, a connector ferrule is embedded into the end, located in the body, of the eluant inflow connector, one end of the spray needle and one end of the sealing supporting sleeve penetrate out of the connector ferrule, two straight-through joints inwhich high-speed atomizing gas is sprayed are symmetrically arranged on the body, the other end of the spray needle stretches into the spray hole, and a gap for enabling the atomizing gas to be sprayed out exists between the spray needle and the wall of the spray hole.

Description

technical field [0001] The invention relates to a nozzle of an evaporative light scattering detector. Background technique [0002] The detection principle of the evaporative light scattering detector is that the column eluent is first atomized to form an aerosol, and then the solvent is evaporated in the heated drift tube, and finally the remaining non-volatile solute particles are detected in the light scattering detection cell. The process includes the following steps: [0003] 1. Atomization: The liquid mobile phase is transformed into fine droplets in the atomization chamber under the action of the carrier gas pressure, so that the solvent is easier to evaporate. The size and uniformity of the droplets are important factors to ensure the sensitivity and repeatability of the detector. [0004] The evaporative light scattering detector, through the precise control of the air pressure and temperature, ensures a narrow droplet size distribution in the spray chamber, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B7/04B05B7/26
CPCB05B7/0475B05B7/267
Inventor 姚冬徐晓东陈民波张琳
Owner 苏州赛德福科学仪器有限公司
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