Calcium carbonate grinding device

The utility model discloses a calcium carbonate grinding device which comprises a shell (1) and a feed port (9) on the shell (1), a driving motor (2) is arranged in the middle of the upper end of the shell (1), a rotating shaft (3) is arranged on an output shaft at the lower end of the driving motor (2), a grinding block (4) is arranged on the rotating shaft (3), a liftable grinding seat (5) is arranged outside the grinding block (4), a screen (6) is arranged on the lower side of the grinding block (4), and a recovery pipe (7) is arranged at one end of the screen (6). A lifting machine (8) is arranged on one side of the recycling pipe (7), the upper end of the lifting machine (8) is connected with a feeding port (9) of the shell (1), a collecting box (10) is arranged on the lower side of the screen (6), a fixing frame (11) is arranged in the collecting box (10), a collecting bag (12) is arranged in the fixing frame (11), and a draught fan (13) is arranged below the collecting bag (12). The calcium carbonate p