Dust fall system for cantilever type heading machine

Abstract

The invention discloses a dust fall system for a cantilever type heading machine, which comprises a mine dust collection mechanism and a mine dust treatment mechanism, wherein the mine dust collection mechanism comprises a suction hood sleeved on a cutting arm of a heading machine; the mine dust treatment mechanism comprises a dust fall box; the middle part of the dust fall box transversely penetrates through a dust suction pipeline communicated with the dust fall box; dust filtering nets are respectively arranged on the part of an inner cavity of the dust fall box, which is close to the dust suction pipeline; a water mist nozzle is arranged on the top of the inner cavity of the dust fall box between the dust filtering nets; a water inlet pipe and a water suction pump are arranged on the water mist nozzle; an inverted frustum-shaped sewage collection cavity is formed in the bottom of the dust fall box; the bottom of the sewage collection cavity is connected to a drainage pipeline; a rotating clapboard is arranged between the sewage collection cavity and the drainage pipeline at an interval; the rotating clapboard is connected to the bottom of the dust fall box through an elastic part. The dust fall system can move along with the heading machine, excessive external matched equipment is not required, excessive manual operations are not required, the heading operation is not influenced, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of coal mining machinery and equipment, and in particular relates to a dust suppression system applied to a cantilever roadheader. Background technique [0002] Mineral dust refers to the general term for various coal and rock particles produced in the process of mine production and construction. The hazards of mine dust are mainly reflected in the following aspects: 1) pollute the workplace, endanger human health, and cause occupational diseases; 2) some mine dust (such as coal dust and sulfide dust) can explode under certain conditions; 3) accelerate Mechanical wear shortens the service life of precision instruments; 4) Reduces visibility in the workplace and increases the occurrence of work-related accidents. [0003] According to the survey, the dust production of the tunneling face accounts for 20% to 38% of the dust production of the entire mine. The dust in the tunneling face is mainly caused by the...

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Problems solved by technology

Coal seam water injection and dust prevention is to inject water into the tunnel before the excavation work to reduce the generation of dust. Due to the fast excavation speed, it is difficult to implement on site. Therefore, the water injection technology for coal seam excavation is not suitable for modern production needs; and the spray dust reduction commonly used now is Use the pressurized water spray to press the coal dust at the coal drop point to achieve the effect of dust reduction, but it is easy to cause the air viscosity in the roadway to be high, and the generated powder mud will fall on the road surface of the excavation, causing the road surface to be muddy, making it difficult to advance during excavation

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