Lithium carbonate filtering device

The utility model relates to the field of lithium carbonate preparation, in particular to a lithium carbonate filtering device which comprises a filtering tank fixed to a rack, a filter membrane plate is fixed in the filtering tank, a clear water pipe is fixed to the top of the filtering tank, a slag discharging pipe is fixed to the bottom of the filtering tank, and a feeding pipe is further fixed to the portion, below the filter membrane plate, of the filtering tank. A material receiving disc is further arranged on one side below the filter membrane plate, the material receiving disc is driven by a motor to rotate, a connecting pipe is further fixed to one side of the material receiving disc, a blow-off pipe rotationally connected with the connecting pipe is arranged at the bottom of the connecting pipe, and a blow-off pump is further fixed to the blow-off pipe. After filtering is conducted for a period of time, the sewage pump is started, the sewage pump extracts liquid at the position of the material recei