Dust collection and removal device for mine machine excavation working surface

Abstract

The invention discloses a dust collection and removal device for a mine machine excavation working surface. The device comprises a double-suction type centrifugal fan, an internal air funnel, an external air funnel, an internal loudspeaker air opening, an external loudspeaker air opening, a water inlet pipe, a spray nozzle, a water collecting tank and a blowdown pipe, wherein the external air funnel is arranged outside the internal air funnel; the internal loudspeaker air opening and the external loudspeaker air opening are formed at the same end of the internal air funnel and the external air funnel respectively; the double-suction type centrifugal fan is arranged at the other ends of the internal air funnel and the external air funnel; the water inlet pipe is connected on the spray nozzle; the spray nozzle is arranged on the top of the interlayer between the internal air funnel and the external air funnel; the blowdown pipe is arranged on the water collecting tank; and the water collecting tank is arranged at the bottom of the interlayer between the internal air funnel and the external air funnel. The device has a compact structure, a small volume and an improved dust control effect.

Description

technical field [0001] The invention relates to a dust removal device for mechanical equipment, in particular to a dust collection and dust removal device for a mine excavation face. Background technique [0002] The sustainable development strategy puts forward higher requirements for mine operating environment and production safety. At present, with the continuous improvement of mine mechanization and the widespread use of high-power roadheaders, the amount of dust produced on the machine-excavated working face has increased sharply, and the working environment has deteriorated. Especially, the dust concentration at the driver of the roadheader often seriously exceeds the standard. [0003] At present, at home and abroad, the mixed ventilation of long pressure and short suction is mainly used, and the dust-laden air flow of the tunneling head is sucked into the dust collector for purification. The effectiveness of this ventilation and dust removal technology to reduce the...

AI Technical Summary

Problems solved by technology

However, because the wall-attached air duct and the air suction port are two independent parts, the whole device has a large volume and takes up a large working space. The velocity distribution of the rotating air flow in the fan duct is not ideal in the initial stage, which affects the dust control effect of the rotating air curtain

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