Lampblack filtering device for mine

The invention discloses a lampblack filtering device for mines. The device comprises a main body, a gas inlet end and a gas outlet end. A gas inlet pipe is arranged on the upper end of the gas inlet. An inner core is arranged inside the main body. Two round steel plates are respectively arranged on the upper and lower ends of the inner core. A gas buffering chamber is arranged between the gas inlet and the inner core. The two round steel plates are divided into three equal-sized parts with three rectangular steel plates with a same size. Two steel plates are provided with reflux ports. A plurality of gas inlet and outlet holes are arranged on the upper and lower end round steel plates at corresponding positions. Four lower support rods with a same length are arranged on the lower end round steel plate, such that a gas buffering zone is formed between the lower end round steel plate and the gas outlet. Stainless steel filtering mesh is filled between the inner core space and the main body. With the device, lam