Device and method for testing cutting performance of aerosol polydisperse cutter

Abstract

The invention relates to the field of aerosol polydisperse cutters, in particular to an aerosol polydisperse cutter cutting performance testing device which comprises a static box, a mixing bin is arranged on the upper portion of the static box, the mixing bin is connected with an aerosol generator through a main pipeline, a bottom plate is arranged at the bottom of the static box, and an adjusting plate is rotationally arranged in the middle of the bottom plate. An upstream sampler and a downstream sampler are arranged on the end face, located in the static box, of the adjusting plate, the upstream sampler is connected with an upstream pipeline outside the static box, the downstream sampler is connected with a downstream pipeline, the upstream pipeline and the downstream pipeline are converged and communicated to a connecting pipeline, two branches are arranged on the connecting pipeline, one branch is connected with a particle size spectrometer, and the other branch is connected with a pipeline. And the other branch is connected with the pump body. The static box disclosed by the invention can be used for detecting the performance of a 16.67 L / min high-flow cutter and a 100 L / min high-flow cutter, and the problems that the particle concentration is non-uniform and false static air conditions cannot be maintained due to the influence of sampling airflow disturbance on uniform mixing of aerosol particles in the static box are solved.

Description

technical field [0001] The invention relates to the technical field of aerosol polydisperse cutters, in particular to an aerosol polydispersity cutter cutting performance test device and a method thereof. Background technique [0002] With the advancement of my country's industrialization process, the environment has also been seriously damaged, which has a serious impact on human health. Taking the atmospheric environment as an example, exhaust emissions have caused the deterioration of air quality, which has directly led to a significant increase in the number of respiratory emergencies. It can be seen that the regulation and control of air pollution is very important. [0003] Before implementing air pollution control, the first thing to do is to establish a sound air quality monitoring method and evaluation mechanism, and equip corresponding monitoring equipment to accurately test and evaluate the degree of air pollution, in order to measure the effect of air quality im...

AI Technical Summary

Problems solved by technology

The static box method imitates that the sampler is placed in a normal air environment, and the experiment of the cutting characteristics of the polydisperse aerosol cutter is carried out under pseudo-static air conditions. Therefore, the static box method at home and abroad only conducts experiments with small flow rates, and there is no experiment with large flow rates. In the test, when the static box method is used to test the cutter at a flow rate of 100L / min, if the mixing of the polydisperse aerosol and the dilution air in the static box is not handled well, the mixing concentration, duration and At the same time, if the size of the static box is not suitable, the excessive flow will cause the air flow to be too large, and the pseudo static air condition cannot be maintained

[0006] Moreover, at present, there is a lack of static box related technologies for the detection of cutting characteristics of large-flow polydisperse aerosol cutters in China. Under the conditions of large-flow experiments, the mixing of aerosol particles in the static box is affected by the disturbance of the sampling airflow, resulting in uneven particle concentrations and inability to The Problem of Maintaining Pseudo-Static Air Conditions

Images