Ultrasonic atomization dust fall device for mine mining working face

Abstract

The invention discloses an ultrasonic atomization dust fall device for a mine mining working face. The ultrasonic atomization dust fall device is suitable for being used in a special environment under a mine. The ultrasonic atomization dust fall device comprises a dustproof air compressor and a jet nozzle, wherein the jet nozzle is connected to the dustproof air compressor, and an ultrasonic atomizer is arranged on the jet nozzle and connected with a water source. The ultrasonic atomizer comprises a water container connected with the water source, and an ultrasonic unit is arranged on the water container. Two ultrasonic energy converters are arranged on the two sides of the water container, and a phase inverter is arranged between one ultrasonic energy converter and a signal generator, so that the two ultrasonic energy converters arranged on the two sides of the water container generate high-frequency vibration in an inverted frequency mode, and the ultrasonic atomizing effect in the water container is enhanced; a stainless steel dust filter net is arranged on an air inlet of the air compressor and used for filtering dust on the air inlet, meanwhile, a solenoid valve B and a dust blowing nozzle are arranged on an air outlet, and coal dust accumulating on the stainless steel filter net is cleared through opening the solenoid valve B at regular intervals, so that the dustproof air compressor continuously works normally. The ultrasonic atomization dust fall device is simple in structure, convenient to use and high in dust fall efficiency.

Description

technical field [0001] The invention relates to a dust-suppressing device, in particular to an ultrasonic atomization dust-suppressing device suitable for coal mine excavation working faces with harsh environment and severe coal dust. Background technique [0002] The environment of the underground mining face of the coal mine is harsh, and the coal dust is serious. It not only seriously endangers the health of the miners, but also has the danger of explosion. Most of the existing spray dust reduction methods use centrifugal or crushing methods, and some studies use ultrasonic atomization, but the actual application effect is not ideal. The main problem is that the diameter of the spray water that uses the non-ultrasonic principle is relatively large , cannot fully absorb finer coal dust; the distance of the current ultrasonic spray method is too short, which is not suitable for long-distance dust reduction on the mining face; the current ultrasonic transducer has a small am...

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Problems solved by technology

Most of the existing spray dust reduction methods use centrifugal or crushing methods, and some studies use ultrasonic atomization, but the actual application effect is not ideal. The main problem is that the diameter of the spray water that uses the non-ultrasonic principle is relatively large , cannot fully absorb finer coal dust; the distance of the current ultrasonic spray method is too short, which is not suitable for long-distance dust reduction on the mining face; the current ultrasonic transducer has a small amount of atomization, and its service life is short, so it is not suitable for long-term Continuous work; the silver electrode of the ultrasonic transducer is easy to corrode and fall off in a humid environment

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