Grouting pump grout outlet pressure constant device

The utility model discloses a grout outlet pressure constant device of a grouting pump, and relates to the technical field of pressure constant. The grouting pump grout outlet pressure constant device comprises a shell, a grout inlet is formed in the top end of the shell, a first pressure relief opening is formed in the side wall of the shell, a pressure relief mechanism is arranged on the side wall of one side of the shell and comprises a sliding plate, and the sliding plate penetrates through and is slidably connected to the side wall of the shell; the bottom end of the sliding plate is elastically connected with the side wall of the shell through a first spring, a triggering mechanism is arranged on the other side of the shell, and a sliding block is connected to the inner wall of the shell through a piston. By arranging the pressure relief mechanism, when the grouting pump is abnormal, the pressure is greatly increased, and the first pressure relief opening cannot effectively relieve pressure, the sliding