Automatic draining device for ceramic filter

The utility model discloses an automatic draining device for a ceramic filter. The automatic draining device comprises a main filter barrel, a slurry suction pipe, a vacuum pipe, a vacuum pump, a vacuum pump inlet pipe, an auxiliary filter barrel, an air inlet pipe, a bent connection pipe, a straight connection pipe, a drain pipe, a turning plate type liquid level meter and a control device, wherein the auxiliary filter barrel is lower than the main filter barrel; the air inlet pipe is arranged at the upper end of the auxiliary filter barrel and is provided with an air inlet valve; the bent connection pipe is connected to the upper end of the auxiliary filter barrel and the upper end of the side wall of the main filter barrel and is provided with a circulating valve; the straight connection pipe is connected to the upper end of the side wall of the auxiliary filter barrel and the lower end of the side wall of the main filter barrel and is provided with a turning plate; the drain pipe is connected with the bot