Medium-frequency electric furnace with exhaust mechanism for well lid casting

The utility model relates to the technical field of well lid casting, and provides a medium-frequency electric furnace with an exhaust mechanism for well lid casting, which is convenient for reducing the pollution of flue gas generated when the medium-frequency electric furnace is used for casting a well lid to the working environment through the cooperation of the exhaust mechanism and a treatment box, and comprises a support plate connected with a furnace body through a fixing frame, a treatment box is connected to the supporting plate, a solution box is arranged in the treatment box, two supporting seats are connected in the solution box, a filter plate is arranged between the two supporting seats, a protection part and a fan are connected to the treatment box, an air outlet pipe is communicated between the fan and the filter plate through a telescopic pipe, and a driven pipe is connected to the top end of the fan. An exhaust pipe is communicated between the driven pipe and the furnace body through an exha