A fully mechanized coal mining face spray dust falling device

Abstract

The present application relates to dust falling device technical field, specifically is a kind of fully mechanized working face spray dust falling device, the present application includes pressure stabilizing module, filter cartridge, center tube, venturi and spray head assembly.Pressure stabilizing module can automatically stabilize water inlet pressure fluctuation.Filter cartridge is equipped with annular filter screen and water-driven rotary switching mechanism, when filter screen is blocked, it is automatically rotated and linked to open backflushing hole, and the filtered clean water is used to backflush filter screen, to realize maintenance-free automatic cleaning.Center tube is provided with helical disturbance leaf and microporous gas injection cylinder, micro-nano bubbles are generated by high-speed rotating flow shear, and the wetting ability of pure water to hydrophobic coal dust is significantly improved.Spray head assembly includes porous impact plate and rotating conical disc, and three-stage impact atomization is carried out on gas-liquid flow to form wide fan-shaped mist curtain.The present application does not need chemical additives, can be stable atomization under water supply pressure amplitude fluctuation, automatic backflushing prevents blockage, has high dust falling efficiency for hydrophobic coal dust, and is suitable for fully mechanized working face in underground coal mine.

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