All-metal replaceable powder box capable of being ejected from bottom

The all-metal replaceable powder box comprises a box body and a box cover, one side of the box cover is rotationally connected to the box body through a rotating shaft, a first magnet is arranged on the other side of the box cover, a second magnet is arranged at the position, corresponding to the first magnet, of the box body, and the first magnet and the second magnet attract each other. A powder disc is arranged in the box body, a middle seat is arranged above the powder disc, a first through hole is formed in the middle seat, two connecting plates are arranged on one side of the middle seat, second through holes are formed in the connecting plates, the connecting plates are connected to the rotating shaft through the second through holes, a baffle is arranged on the other side of the middle seat and abuts against the side wall of the powder disc, and a third through hole is formed in the bottom of the box body. And the third through hole is positioned below the middle seat. The powder box can solve the pro