Dust collecting device for calcium carbonate grinding

The utility model relates to the technical field of dust collection, in particular to a dust collection device for calcium carbonate grinding, which comprises a tank body, the other end of a connecting pipe is connected to a grinding tank, supports are fixedly connected to two sides of the lower surface of the tank body, and a collecting and filtering mechanism is mounted on one side and inside the tank body. The motor drives the gear to rotate, the gear is connected with the clamping tooth ring in a meshed mode through the clamping teeth, and the fixing ring drives the rotary blade to rotate, so that dust rotates in the suction tank body, and when airflow containing calcium carbonate dust rotates and passes through the first filter plate and the second filter plate, the dust can be sucked into the tank body. Calcium carbonate dust in airflow of the calcium carbonate dust can be left in the tank body through a second filter plate, the dust in the airflow of the calcium carbonate dust is moved out through a du