Grouped nozzle spraying dust removal device for cantilever excavator

Abstract

The invention provides a grouped nozzle spraying dust removal device for a cantilever excavator. The device includes a plurality of fan-shaped nozzle bodies which are located above a coal and rock cutting tool, fixed on a cantilever assembly and arranged in groups, the fan-shaped nozzle bodies are provided with outer shells, and the fan-shaped nozzle bodies and the outer shells form circulation channels varying from large to small; the upper end surfaces, at steps, of the fan-shaped nozzle bodies and the outer shells form installation cavities; the installation cavities are internally providedwith swirl nozzles; each installation cavity is divided into a first cavity and a second cavity by the corresponding swirl nozzle; the second cavities communicate with the circulation channels; the upper ends of the fan-shaped nozzle bodies are provided with a fixed disc; the fixed disc is provided with water flow holes; the water flow holes penetrate through the outer shells to communicate withthe first cavities; the fixed disc is provided with air inlets; and the air inlets penetrate through the outer shells to communicate with the second cavities. The device is beneficial to improve the spray effect, effectively concentrates the density of water mist, and reduces the water consumption.

Description

technical field [0001] The invention relates to the technical field of coal mine machinery, in particular to a cantilever type roadheader group nozzle spray dust suppression device. Background technique [0002] In recent years, with the development of high-yield and high-efficiency mines, the dust concentration generated by rock roadway excavation is getting higher and higher. The high concentration of dust not only blocks the work line of sight and affects the work of workers, but the tiny dust can also damage the use of mechanical equipment. The high concentration of respirable dust seriously endangers the health of the workers at the excavation face. Dust control has increasingly become the focus of prevention and control work. For a long time, the dust hazard in the fully mechanized coal mining face has been a major problem that has plagued the safety of coal mine production. With the rapid development of science and technology and the improvement of material living sta...

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Problems solved by technology

[0003] At present, the internal spray system is commonly used on the roadheader. Its function is to spray water mist to the contact part between the pick and the coal rock when the cutting head cuts the coal rock, so as to achieve the purpose of reducing dust and cooling; but there are also certain limitations and Insufficient, therefore, it is very necessary to propose a cantilever roadheader group nozzle spray dust suppression device

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