A laser particle size analyzer and measurement method for realizing all-round measurement

Abstract

This disclosure proposes a laser particle size analyzer and a measurement method for realizing all-round measurement. The laser particle size analyzer includes a rotating laser transmitter receiver and a sample pool. The circle, the rotating laser transmitting receiver includes a rotating device and a measuring device arranged on the rotating device, the measuring device is used to emit a laser signal to the sample cell and detect an echo signal. The disclosed laser particle size analyzer and its measurement method can realize continuous and seamless reception of scattered light from 0° to 180°, and further expand the measurement lower limit of the laser particle size analyzer. The measured results are in good agreement with the nominal values, and the lower limit of measurement is close to the theoretical limit of the static light scattering method. And by using the rotating laser transmitter receiver for multi-angle measurement, and then measure the size of irregular particles at different angles.

Description

technical field [0001] The present disclosure relates to the related technical field of laser particle size analyzer, in particular, it relates to a laser particle size analyzer and a measurement method for realizing all-round measurement. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The laser particle size analyzer uses laser light to irradiate the micropowder particles to produce the diffraction effect of light. The difference in the size of the particles brings about changes in the diffraction angle of the laser, which is projected onto the detector as a change in the size of the diffraction halo. Analyze the thickness of the particle size according to the size of the halo, and judge the quantity of a certain particle size according to the strength of the halo. Then, according to the size of the diffraction halo and the intensity o...

AI Technical Summary

Problems solved by technology

[0004] The application of laser particle size analyzers is becoming more and more extensive, and the requirements for laser particle size analyzers are also getting higher and higher. The inventors found that traditional laser particle size analyzers are used for particle size analysis, and the measurement orientation is single, and only one angle can be obtained for irregular particles. The size of the particles cannot be accurately and comprehensively analyzed, especially for nanoparticles, and the changes in particle size composition cannot be effectively and accurately reflected

The smaller the particle, the larger the scattering angle. For the particle size measurement of small particles, the measurement range of the scattering angle must be expanded. The lower limit of the current laser particle size analyzer is limited, and the measured particle size cannot meet the measurement of small particles.

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