Novel underground wet blasting machine of coal mine

Abstract

The invention discloses a novel underground wet blasting machine of a coal mine. The wet blasting machine comprises a dispensing mechanism, a stirring mechanism, a pumping mechanism and an injection mechanism, wherein the dispensing mechanism, the stirring mechanism, the pumping mechanism and the injection mechanism are sequentially connected. The dispensing mechanism is a mechanism used for mixing raw materials, the stirring mechanism comprises a spiral stirring shaft; a spiral propelling movement blade and a stirring blade are arranged on the spiral stirring shaft, the pumping mechanism pushes and jets concrete to the injection mechanism, and the injection mechanism jets out the concrete under the action of compressed air after the concrete and a liquid accelerating agent are mixed. In the wet blasting machine, the spiral propelling movement blade and the stirring blade are arranged on the spiral stirring shaft, the continuous operation of stirring is realized, the stirring is more sufficient, and the stirring effect is ideal.

Description

technical field [0001] The invention relates to a coal mine underground concrete wet spraying equipment, in particular to a mixing device of a wet spraying machine. Background technique [0002] At present, in the tunnel construction of railways and highways, the concrete used is mostly commercial concrete, which can be transported to the construction site by a mixer truck for grouting operations. The shotcrete excavation site of coal mine underground roadway is generally about 1000 meters underground, there is no mixer truck suitable for mine use, even if other equipment is used to transport commercial concrete to the underground, it is very uneconomical. The more economical and convenient method is to transport the materials to the underground with mine trolleys for on-site mixing. At present, concrete mixers that can be used for on-site mixing include reverse discharge mixers and horizontal shaft (vertical shaft) forced mixers. A common disadvantage of these mixers is th...

AI Technical Summary

Problems solved by technology

At present, concrete mixers that can be used for on-site mixing include reverse discharge mixers and horizontal shaft (vertical shaft) forced mixers. A common disadvantage of these mixers is the traditional concrete mixing mode of feeding, mixing, and discharging. The material is discharged continuously, so it can only be fed intermittently to the pumping device of the concrete wet spraying machine

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