Building grouter

The utility model discloses a building grouter and relates to the field of building grouters. A building grouting machine comprises a machine table, a stirring tank is arranged at the top of the machine table, the left side of the top of the stirring tank communicates with a feeding bin, a sealing cover is arranged at the bottom of the feeding bin, a driving motor is arranged on the back face of the feeding bin, and a stirring shaft is installed at the output end of the driving motor; and the front face of the stirring shaft penetrates through an inner cavity of the feeding bin, stirring paddles are sequentially installed on the outer surface of the stirring shaft from front to back, and a stepping motor is arranged on the left side of the stirring tank. According to the building grouter, through the arrangement of the stepping motor and the driving motor, forward rotation and reverse rotation can be achieved, instant stop can be achieved, the frequency of the number of revolutions can be set, the building gr