Charging bucket cover plate door of flame spray repairing machine

The utility model relates to the technology of the flame spray repairing machine and provides a charging bucket cover plate door of a flame spray repairing machine, wherein a charging bucket cover plate (1) is connected to the upper portion of the charging bucket body of the flame spray repairing machine; the charging bucket cover plate door (2) is connected to the charging bucket cover plate (1) through a hinge; a cone-shaped hole is formed at the center of the bucket cover plate (1), and a cone is provided on the cover plate door (2); the outer diameter (phi) of the top of the cone provided on the cover plate door (2) is the same as the inner diameter (phi) of the top of the cone-shaped hole provided at the center of the charging bucket cover plate, while the outer diameter (d) of the bottom of the cone provided on the cover plate door (2) is smaller than the inner diameter (D) of the bottom of the cone-shaped hole provided at the center of the charging bucket cover plate; and the outer apex angle (alpha) o