Funnel suction nozzle type dust generator

Abstract

The invention provides an experimental dust generator, in particular to a funnel suction nozzle type dust generator which can control quantity, particle diameter and concentration of dust, is simple in integral structure, convenient to operate, wide in application range and relatively good in packaging. The dust generator comprises a stirring motor, a case, a stirring rod, a dust feeding funnel, a suction nozzle, a rotary table, a negative pressure tube, a dust outlet, a stepping motor, a monitoring sensor, a negative-pressure generating device, a microcomputer, a remote controller, an electromagnetic valve, a stepping motor driver and a fault sensor, wherein the stirring rod is used for stirring the dust in the funnel to allow the dust to flow uniformly; when the rotary table rotates under the driving of the stepping motor, the dust flows into the rotary table from the outlet at the bottom of the funnel in a linear manner; the negative-pressure generating device controlled by the microcomputer sucks the dust into the cavity of the negative-pressure generating device through the suction nozzle connected with the negative pressure tube, and the dust is sprayed out after being fully mixed with the air for dust concentration testing analysis and for studying of dust distribution law, migration law, settling law and the like.

Description

Technical field [0001] The invention can accurately generate dust quantity, control dust particle size composition, adjust dust concentration of different particle sizes, and realize automatic control at the same time; the invention can be used for dust concentration test research, dust distribution law and migration law research, and different particle size dust sedimentation law And the pathological research of miners' pneumoconiosis provides a quantitative and continuous source of dust, which belongs to scientific research experimental equipment. Background technique [0002] Coal mining, blasting and other working faces in coal mines often produce a large amount of dust, which seriously affects the safe production of the mine and endangers the health of workers. Therefore, in order to reduce the dust concentration and the impact of various dusts on mine production, it is necessary to study the dust distribution, migration and settlement rules. The smaller the dust particle s...

AI Technical Summary

Problems solved by technology

When analyzing the mine dust concentration and its regularity, dust sampling can only be carried out at the underground working face, which brings a lot of inconvenience to the dust testing and research work

Moreover, it is impossible to study the continuous distribution and movement of dust in the roadway space through dust sampling, and it is impossible to obtain a reasonable dust control method, let alone produce continuous, high-concentration respirable dust to meet the needs of pneumoconiosis pathology research.

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