Underground long-distance roadway mortar spraying device for coal mines

The utility model discloses an underground long-distance roadway mortar spraying device for coal mines particularly, solving the problems that the current mortar spraying device cannot spray the mortar at long distance to cause complex process and bad supporting effect; the underground long-distance roadway mortar spraying device for the coal mines comprises a mortar spraying machine with a stirring bin, wherein the upper end of the stirring bin is provided with a feeding screen, while the lower end of the stirring bin is provided with a rubber plate; feed holes are arranged on the rubber plate; discharge holes of the mortar spraying machine are connected with a plurality of conveying pipes serially interconnected; adjacent two conveying pipes are connected with a three-way valve therebetween and communicated with two interfaces of the three-way valve; the other interface of the three-way valve is connected with a wind pipe; and the discharge port of the conveying pipe located at the outermost side is provide