Waste gas filtering device of vacuum melting furnace for target material

The utility model discloses a waste gas filtering device of a vacuum melting furnace for a target material, which comprises a base and is characterized in that a filtering barrel is arranged on the base, a transparent glass visual window is arranged on a barrel body of the filtering barrel, an L-shaped gas inlet pipe is arranged on the filtering barrel, one end of the L-shaped gas inlet pipe is connected with a gas outlet of the vacuum melting furnace, and the other end of the L-shaped gas inlet pipe is connected with a gas outlet of the vacuum melting furnace. An L-shaped air inlet pipe is arranged at one end of the filter cartridge, a check valve is further arranged on the L-shaped air inlet pipe, the other end of the L-shaped air inlet pipe extends into the filter cartridge, a conical pipe is connected to the filter cartridge, an L-shaped exhaust pipe is connected to the conical pipe, and a first drawable filter box and a second drawable filter box are sequentially arranged on a cartridge body of the filte