Net type foam film dust removal system for underground coal mine

Abstract

The invention discloses a net type foam film dust removal system for an underground coal mine. The system mainly comprises a filter, a fixed-ratio adder, a liquid storage tank, a gas-liquid booster pump, an air compressor, an air regulating valve, a pressure reducing valve, a check valve, a dust removal net, a plurality of foam sprayers and the like. The filter, the fixed-ratio adder and the gas-liquid booster pump are connected through pipelines sequentially. The fixed-ratio adder is connected with the liquid storage tank. The gas inlet end of the gas-liquid booster pump is connected with a pressure gauge, the regulating valve and the air compressor. The water outlet end of the booster pump is connected with the pressure reducing valve, the pressure gauge, the check valve and the foam sprayers sequentially. The dust removal net, namely a double-layer metal net, is mounted below the sprayers. Foam generated by the foam sprayers evenly covers the dust removal net to form a foam film, and dust flows into a water discharge tank after being captured by the foam film. The net type foam film dust removal system has the advantages that by the net type foam film, contact between dust particles and the foam can be effectively increased, dust wettability can be effectively improved, and dust removal efficiency can be also improved; the net type foam film is simple in structure and easy to mount and demount, and water consumption can be reduced remarkably.

Description

technical field [0001] The invention relates to a net-type foam film dedusting system used in underground coal mines, belonging to the field of wet foam dedusting. Background technique [0002] Coal mine dust is one of the important factors affecting the safe production of coal mines. Long-term operation in an environment with high dust content in underground mines may easily cause pneumoconiosis and endanger the health of underground workers; Underground coal mine safety production brings great hidden dangers. At present, coal seam water injection, spray dust suppression, dust collector dust removal, ventilation dust removal, individual protection and other methods are mainly used to suppress dust and dust in underground coal mines in my country. Among them, the method of spraying water is mostly used for dust removal at fixed dust production points in production and transportation. Although this method can reduce the dust concentration to a certain extent, it still has th...

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Problems solved by technology

Although this method can reduce the dust concentration to a certain extent, it still has the disadvantages of large water consumption, inconvenient loading and unloading, and difficult sewage treatment.

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