Rotating disc type dust aerosol generating device

Abstract

The invention provides a rotating disc type dust aerosol generating device characterized in that an agitating motor is controlled by a computer to drive an agitating blade in a flowing chamber to rotate, and dust in the flowing chamber is uniformly agitated and conveyed to a pit which is arranged on a rotating disc below a drain hole on the bottom of the flowing chamber and specially used for carrying dust; and dust stored in the pit on the rotating disc is absorbed into a dust spray dissolution cavity by a negative pressure generator which is controlled by the computer through a negative pressure dust suction pipe, and dust aerosol is formed and then conveyed into an aerosol detection laboratory chamber to be detected and experimented. When the agitating motor controlled by the computer rotates at different rotating speeds and uses rotating discs of different pit widths, the quantity of dust conveyed to the negative pressure dust suction pipe is different, and the concentration of dust aerosol formed by dust flowing in the dust spray dissolution cavity is also different. Therefore, dust aerosol of stable concentration can be continuously, accurately and quantitatively generated by selecting a rotating disc of proper pit width and proper rotating disc rotating speed and remaining unchanged.

Description

technical field [0001] The invention can continuously and accurately control and produce quantitative dust aerosol to be used in scientific research fields such as ultrafine dust particle size detection, atmospheric particulate matter research, and human respiratory disease virus. It can also be applied to nanomaterials and other fine particles for detection and calibration in powder science, industrial production, quality control, or for inhalation toxicity experimental research in the fields of medical science, labor hygiene, and environmental protection. It has broad application prospects. Background technique [0002] In the existing technology, there is no special equipment to meet the demand for continuous and quantitative output of dust aerosols when detecting and calibrating fine particles such as nanomaterials and dust aerosols, or conducting inhalation toxicity experiments. Dust can only be input in the test chamber at one time and the air is blown by a fan at the ...

AI Technical Summary

Problems solved by technology

Dust can only be input in the test chamber at one time and the air is blown by a fan at the same time. It cannot simulate the continuous distribution of tiny particles such as nanomaterials and dust aerosols in the actual production and life, and scientific testing and calibration cannot be carried out. , let alone produce continuous high-concentration fine particle dust aerosols to meet the requirements of inhalation toxicity experiments

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