Grinding device for building coating production

The utility model discloses a grinding device for building coating production, which comprises a box body, and a discharge pipe is fixedly inserted into one side of the bottom of the box body; the grinding mechanism comprises a groove, a grinding ball, a fixing disc and a discharging hole, the fixing disc is fixedly welded between the inner walls of the box body, the grinding ball is rotationally connected to the center of the bottom of the fixing disc, and the groove matched with the grinding ball is formed in the fixing disc; a discharging hole is formed in the position, located at the top of the groove, in the fixing disc. The filter screen is fixedly mounted between the inner walls of the box body and located at the bottom of the fixed disc; the grinding device for building coating production effectively solves the problems that an additional screening device is needed for screening particles meeting the particle size after grinding of an existing grinding device for building coating production, the opera