Mortar spray gun

Abstract

The invention relates to a mortar spray gun. Existing spray guns are complicated in support equipment, restricted in working efficiency, and short in spraying distance and poor in atomizing effects when spraying mortar on protective layers. The mortar spray gun comprises a gun body, a mortar inlet pipe and a spray nozzle, wherein the mortar inlet pipe is communicated with the gun body. The mortar spray gun is characterized in that the same circumference of the end surface of the gun body is evenly provided with a plurality of mortar outlets, the end portion of the gun body is provided with a fixing unit, and the mortar outlets and the spray nozzle are arranged inside the fixing unit; a mortar distribution disc and a mortar collecting mortar are sequentially arranged between the mortar outlets and the spray nozzle, and the mortar outlets, the mortar distribution disc, the mortar collecting disc and the spray nozzle are communicated with one another; the center of the gun body is provided with a through hole vertical to the end surface of the gun body, an air inlet pipe is arranged inside the first through hole, one end of the air inlet pipe extends out of the gun body and provided with a plug cap, and the other end of the air inlet pipe extends into the fixing unit and is communicated with the mortar distribution disc. The mortar spray gun can be matched with various mortar spray devices and is compact in structure, long in spraying distance and good in atomizing effects.

Description

technical field [0001] The present invention relates to mortar spray guns. Background technique [0002] Under the mine, when excavating the roadway of the working face to be mined, it is necessary to reinforce the surrounding rock of the roadway with metal mesh and bolts to enhance its pressure bearing capacity and prevent the broken rock from falling, but the bolts and metal mesh cannot prevent the weathering of the surrounding rock. It is necessary to cooperate with the measures of spraying 1-2mm mortar sheath to seal the surface of the surrounding rock and isolate the contact of air and water with the surrounding rock, so as to effectively prevent the damage and peeling of the surrounding rock caused by weathering and deliquescence, so that the surrounding rock can maintain its original shape. Stability and strength, the currently used spray gun supporting equipment is cumbersome, and the work efficiency is limited. When spraying the sheath, the spray distance is short a...

AI Technical Summary

Problems solved by technology

[0002] Under the mine, when excavating the roadway of the working face to be mined, it is necessary to reinforce the surrounding rock of the roadway with metal mesh and bolts to enhance its pressure bearing capacity and prevent the broken rock from falling, but the bolts and metal mesh cannot prevent the weathering of the surrounding rock. It is necessary to cooperate with the measures of spraying 1-2mm mortar sheath to seal the surface of the surrounding rock and isolate the contact of air and water with the surrounding rock, so as to effectively prevent the damage and peeling of the surrounding rock caused by weathering and deliquescence, so that the surrounding rock can maintain its original shape. Stability and strength, the currently used spray gun supporting equipment is cumbersome, and the work efficiency is limited. When spraying the sheath, the spray distance is short and the atomization effect is poor.

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