No-air-source foam plug dust removing system applied to underground coal mine

Abstract

The invention relates to a no-air-source foam plug dust removing system applied to underground coal mine. The no-air-source foam plug dust removing system mainly consists of components such as a clear water pipeline, a mineral flameproof pressure pump, a proportioning mixer, a foaming agent liquid storage tank, a foaming agent pipeline, a foaming liquid pipeline, a foaming liquid distribution device, a foam maker and a foam nozzle. A current water source in a dust removal site is conveyed to the mineral flameproof pressure pump through a filtering device, clear water is pressured and then enters the proportioning mixer, the proportioning mixer generates negative pressure inside and sucks a foaming agent into the foaming agent pipeline, the clear water fully and uniformly mixed with the foaming agent and then enters the foam maker through the foaming liquid distribution device, the foam maker sucks surrounding air by utilizing the Venturi effect to mix with foaming liquid to form high-quality foam, and the foam is sprayed out through the foam nozzle to form a foam plug with the certain thickness so as to block the propagation of mineral dust; and when the system is in use, the number of the foam nozzles and the thickness of the foam plug are selected according to the requirements of the dust removal site. The no-air-source foam plug dust removing system disclosed by the invention does not need a special compressed air conveyance pipeline and has the advantages of simple structure and convenience in use.

Description

technical field [0001] The invention relates to an air-source-free foam curtain dust removal system used in underground coal mines, and is especially suitable for the prevention and control of dust generated in coal mine mining, transportation, loading and unloading and other processes. Background technique [0002] Dust dispersion poses safety, health and environmental problems in many industries, such as mining, mineral processing, steelmaking, and papermaking. In mine production, with the continuous improvement of coal mine mechanization level and production intensity, the dust pollution of various operation sections in the mine (such as excavation, rock drilling, blasting, loading and unloading, crushing, transportation and other production processes) has become increasingly prominent, which cannot be underestimated. In order to prevent coal mine dust pollution, coal seam water injection, spray dust reduction, dust collector dust removal, ventilation dust removal, person...

AI Technical Summary

Problems solved by technology

In the 1950s, research on foam dust removal technology was carried out abroad. For example, the former Soviet scientist Manik, Japan's Shinichiro Yamao, and Umezu Tomi conducted research and attempts on foam dust removal. These studies all have huge systems, complex structures, and pollution. Disadvantages such as working environment

Patent CN101251025A discloses a foam dust removal system for underground coal mines. The system mainly includes a foaming agent liquid storage tank, a compressed air pipeline, and a foamer. Compressed air pipelines are needed to provide the air required for foaming, and the foam liquid The addition of water requires a special quantitative addition pump, the system is relatively complicated, the sprayed foam is umbrella-shaped, and the dust reduction rate is not high

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