Accurate measuring device and method for detecting dust falling efficiency of spray nozzles of different models

Abstract

The invention discloses a mining accurate measuring device and method for detecting the dust falling efficiency of spray nozzles of different models. An air blower communicates with a dust outlet of afirst dust generator through a first branched pipe and communicates with a dust inlet of a dust fog collider through a second branched pipe, the first branched pipe communicates with the second branched pipe, and the corresponding spraying nozzles in the dust fog collider communicate with a water tank through a pressurizing pump. The bottom of the dust fog collider communicates with a circular type dust collector through a first pipeline, and a stirring mechanism is arranged in the circular type dust collector and connected with a motor. Under the environment of an experiment, the dust falling efficiency of the spray nozzles of the different models on dust of different particle sizes and characteristics can be compared, the optimum particle size range of dust capturing through fog drops generated by all the spray nozzles is obtained, effective reference and technology support can be provided for design of the spray nozzle selected model and atomizing scheme of different dust generation operation areas of a coal mine, and thus the suitable spraying nozzles are mounted on the different coal mine work faces to achieve maximization of the dust falling efficiency.

Description

technical field [0001] The invention relates to the measurement of the dust reduction efficiency of different mining nozzles under different parameter conditions according to the dust characteristics, and in particular to a precise measurement device and measurement method for detecting the dust reduction efficiency of different types of nozzles for mining. Background technique [0002] At present, in the absence of any dust prevention measures in the coal mine mining face in my country, the dust concentration in the local area of ​​the fully mechanized mining face can reach 1500mg / m 3 -2000mg / m 3 , Compared with the situation of flour dust in fully mechanized caving work, the amount of dust generated is larger. The processes of coal cutting, moving frame, coal loading, coal transportation and other processes of coal mining machines are the main sources of dust production. In addition, dust generated by secondary dust is also involved. The instantaneous original total dust ...

AI Technical Summary

Problems solved by technology

However, due to the complexity and diversity of the on-site operating environment, the particle size and properties of dust produced in different operating areas are quite different. The selection of nozzles and spray parameters are of great significance to the design of coal mine dust suppression schemes. There are very few methods and equipment for measuring the dust reduction efficiency of nozzles, and it is difficult to achieve the purpose of effectively measuring the atomization dust reduction effect of different nozzles

The research on the dust fall efficiency of dust with different particle size distribution under different types of nozzles has not been reported yet

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