Grouting mechanism

The invention provides a grouting mechanism which comprises a slurry pressure barrel used for storing slurry; a first piston rod is arranged in the material pumping barrel, and the first piston rod is telescopically arranged in the extending direction of the material pumping barrel so as to pump slurry in the slurry pressure barrel into the material pumping barrel; the discharge valve group is communicated with the material pumping cylinder, and the slurry in the material pumping cylinder is pushed into the discharge valve group through the first piston rod; the control valve group is arranged below the slurry pressure barrel, the control valve group comprises a moving part, the moving part is provided with a first position and a second position, and the moving part is movably arranged between the first position and the second position; wherein the moving part is provided with a communicating channel, and the slurry pressure barrel is communicated with the material pumping barrel through the communicating cha