Burr cutting device for metal casting

The utility model discloses a burr cutting device for metal casting, and relates to the technical field of burr cutting devices for metal casting, the burr cutting device comprises a bottom plate and a U-shaped plate, a lifting assembly is mounted on the inner wall of the top end of the U-shaped plate, a first filtering assembly is mounted on the lower surface of the lifting assembly, and a purifying box is fixedly connected to the right end of the upper surface of the bottom plate; an air exhaust assembly is arranged between the purifying box and the U-shaped plate, a second filtering assembly is installed on the inner side wall of the purifying box, the air exhaust assembly comprises a fan, an air inlet of the fan communicates with an air inlet pipe, the end, away from the fan, of the air inlet pipe penetrates through the top wall of the U-shaped plate and then communicates with a hose, and the end, away from the air inlet pipe, of the hose communicates with an inner containing cavity of the filtering box;