Optical Path Switching Device and Application Method for Large Spray Field Laser Particle Size Analyzer

Abstract

The invention discloses an optical path switching device for testing a large-scale spray field laser particle size analyzer and a use method thereof, which includes a base column, a rotating central shaft, a light-shielding sleeve, an optical path centering device, a set bolt, and a light-shielding sleeve column; Among them, the base column is installed with the two ends of the rotating central axis, so that the rotating central axis can rotate freely under the support of the base at both ends; Free rotation on the central axis; the rotating parts are equipped with set bolts, which can be tightened and fixed when the rotating parts reach the appropriate position; the shading sleeve is fixed on the rotating central axis through the column, and rotates together with the rotating central axis; The device is used in conjunction with the split-type spray laser particle size analyzer, which can conveniently realize the rapid switching between the background test and the sample test. More importantly, it can carry out sampling and measurement of the local spray area for large-scale spray fields, and effectively solve the problem of droplet particles in large-scale spray fields. The problem of measuring the concentration too high.

Description

technical field [0001] The invention relates to the field of spray head atomization performance evaluation, belongs to the technical equipment related to the measurement of droplet particle size in large flow and large coverage spray fields, and is used in conjunction with spray laser particle size analyzers, in particular to a laser particle size analyzer for large spray fields Optical path switching device and usage method. Background technique [0002] The diameter of the spray droplets, that is, the particle size of the droplets, is one of the key indicators for evaluating the atomization effect of the spray head. In the design, development and technical verification process of the spray head, it is necessary to measure the particle size of the atomized droplets formed by the spray through the experimental test method to verify the technical characteristics of the spray head. Particle size distribution measurement using a laser particle size analyzer is a commonly used ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcoming of prior art, solve practical problem, provide a kind of optical path switching device and using method for laser particle size analyzer of large-scale spray field, the present invention solves the problem of high droplet concentration in large-scale spray field and The problem of rapid switching between background measurement and sample measurement has realized rapid, continuous and reliable measurement of droplet particle size in large spray fields; the device structure is simple and reliable, easy to adjust, practical and effective, and effectively enhances the application of laser particle size analyzers in particle size measurement of large spray fields performance, ease of use and accuracy

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