Magnetizing device and method for preparing magnetized water for dust fall of underground coal mine

Abstract

The invention discloses a magnetizing device and method for preparing magnetized water for dust fall of an underground coal mine. The device is formed by collecting a plurality of magnet drums in a U-shaped arrangement mode by using connecting bends in parallel, wherein each of the magnet drums is composed of an external magnet, an internal magnet, a hollow pressure-proof pipe, a spiral blade, a magnetic shield cover, a connecting steel column, a pressure-proof pipe, a closed nut and a flange disc. By arranging the internal and external magnets on a water flow spiral channel formed by the hollow pressure-proof pipe, the spiral blade and the pressure-proof pipe in an alternate arrangement mode, an efficient magnetizing environment of combining pulse cutting magnetizing and spiral turbulence is constructed, so that the water for dust fall flowing through is continuously and efficiently magnetized, the scale of turbulence and magnet pass of a water flow are increased, and the problem that water which is in contact with a magnetic field within a relatively short time is not uniformly magnetized is solved. The device has the characteristics of intrinsic safety, convenience in operation, small size and high magnetizing efficiency. The device is suitable for being placed in every position of the underground coal mine, and can effectively improve the wetting performance of the water for dust fall.

Description

technical field [0001] The invention relates to the field of mine dust removal technology and equipment, in particular to a magnetization device and method for preparing magnetized water for coal mine dust removal. Background technique [0002] Coal is the main energy source in our country. However, 95% of coal mines in my country are underground operations. With the continuous improvement of mining mechanization, the amount of dust generated underground in coal mines is also increasing. Especially in the production process of mining face, the dust concentration is often as high as 2000mg / m 3 More than, the physical and mental health of underground workers and the safe production of mine cause great threat. At present, the dust suppression measures commonly used in underground are mainly water spray dust suppression technology, such as coal seam water injection, high-pressure spray, etc., but due to the high surface tension of water itself and the high hydrophobicity of co...

AI Technical Summary

Problems solved by technology

Although magnetic field magnetization can enhance the wetting and dust-reducing performance of aqueous solution, most of the existing magnetizers are mainly used in the field of water purification treatment, and do not use the improvement of solution wetting performance as a technical evaluation index, such as patents CN201310377032.9, CN200810172164.7, and the above patents The magnetization devices generally adopt a straight-through magnetization structure and a single-direction magnetization mode, which easily leads to unbalanced magnetic field strength and unstable operation, and cannot effectively improve the wetting performance of the solution, and cannot effectively improve the wetting performance of the spray dust suppression water.

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