Coal mine fully-mechanized excavating machine onboard dust extraction and purification device

Abstract

The invention discloses a coal mine fully-mechanized excavating machine onboard dust extraction and purification device. The device comprises an induction dust extraction mechanism and a sedimentation purification mechanism, wherein the induction dust extraction mechanism comprises a mine dust concentration sensor, a dust extraction opening, a wetting flow guide cavity, a speed increasing and pressure reducing component, a dust extraction power component and a telescopic negative pressure air duct; the sedimentation purification mechanism comprises a filter box, an inertial dehumidifier and a gradual expansion rectification component; the dust concentration sensor, an induction electromagnetic valve and the dust extraction power component cooperate to realize dust extraction operation; and the filter box, the inertial dehumidifier and the gradual expansion rectification component carry out process operation to realize dust purification. The fully-mechanized excavating machine onboard dust extraction and purification device integrates dust extraction and dust purification, is small in size, low in noise and low in energy consumption, can synchronously move along with a fully-mechanized excavating machine, and always keeps a fixed and effective dust extraction distance, purified clean air flow is converged into fresh air flow of a roadway again, the air supply amount of the roadway is guaranteed to meet the production requirement, and secondary pollution of dirty air to the roadway is avoided.

Description

technical field [0001] The invention relates to a dust removal device for a fully mechanized excavator in a coal mine, in particular to an airborne dust extraction and purification device for a fully mechanized excavator in a coal mine. Background technique [0002] At present, dust removal by dust collector is a dust suppression technology widely used in fully mechanized excavation working faces of coal mines at home and abroad. Commonly used dust collectors mainly include mechanical dust collectors, dry filter dust collectors, wet dust collectors and electric dust collectors. A lot of research has been done on dust collectors in my country. Due to the common problem of small roadway sections in fully mechanized excavation working faces in my country, it is difficult to apply large dry and wet dust removal fans abroad. The dust removal technology of the dust collector with the dust removal fan as the main body. In recent years, according to the production status of fully m...

AI Technical Summary

Problems solved by technology

From the perspective of practical application, dust collectors at home and abroad can effectively improve the dust removal efficiency of fully mechanized excavation working faces, but existing dust collectors generally have defects such as large volume, heavy weight, and serious noise pollution; in addition, existing dust collectors are often placed at a distance from At the second transportation belt after 20m of the working face, the high-concentration dust on the working face is sucked by the air duct, which makes it difficult to realize the synchronous movement with the fully mechanized excavator, which not only greatly increases the energy consumption of dust extraction, but also makes the tunneling driver always exposed to high-concentration dust pollution core area, the working environment cannot be fundamentally improved

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