Comprehensive dust control system for fully-mechanized working face

Abstract

The invention belongs to the technical field of mine underground dust control and relates to a comprehensive dust control system for a fully-mechanized working face. A foam generation device comprises a conical shell, the front end of the conical shell is provided with a foam outlet, and the rear end of the conical shell is in a sealed structure. The conical shell is internally provided with two sandwich layers, a gap is reserved between the two sandwich layers and connected with the foam outlet, and a screen net is arranged in the gap. The inner sandwich layer is a water collection layer while the outer sandwich layer is a gas collection layer, the outer side of the water collection layer is provided with water outlet holes, and the inner side of the gas collection layer is provided with gas outlet holes. The foam outlet is connected with a foam nozzle through a foam conveying pipeline. An air curtain jet dust collection device comprises an air curtain generation device and a jet box, and the air curtain generation device is in an inverted 'U'-shaped structure formed by an upper arm, a left arm and a right arm identical in structure. A plurality of second air guide blades are arranged on a jet cavity fixing plate, a plurality of angle-adjustable first air guide blades are arranged on a movable jet cavity top plate, and an output end of the jet box is communicated with an air supply orifice of the air curtain generation device.

Description

technical field [0001] The invention belongs to the technical field of mine dust prevention and control, and relates to a mine comprehensive prevention and control system, in particular to a fully mechanized excavation dust comprehensive prevention and control system based on isolating dust and reducing dust concentration. Background technique [0002] With the development of fully-mechanized excavation technology in our country, all mines keep pace with the times and constantly update mining excavation equipment, which greatly improves the mining conditions of fully-mechanized excavation. However, a large amount of dust is still generated during the mining process. A large amount of dust seriously affects the safety of the mine and endangers the health of workers. People in the industry at home and abroad are studying air curtain and foam dust suppression technology. At present, the measures commonly used in the prevention and control of dust in fully mechanized excavation...

AI Technical Summary

Problems solved by technology

However, due to the shortcomings and limitations of the above dust removal and dust reduction technologies, the dust content in the air around the excavation face is still relatively large, blocking the line of sight. It can be said that the dust prevention and dust reduction effects of these dust removal methods are not very ideal, especially for breathing Dust, the dust removal effect is worse, and the dust removal efficiency is low

Respirable dust is easily distributed to the driver of the roadheader, and the working environment is polluted by high concentrations of dust, causing the driver of the roadheader to work in this environment for a long time

In recent years, some scholars have begun to introduce air curtains into the fully mechanized excavation face for dust isolation, but there are few related studies, especially for the prevention and control of respirable dust.

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