Vacuum fresh-keeping feeder with replaceable grain barrel

The utility model discloses a vacuum fresh-keeping feeder with a replaceable grain barrel, and relates to the technical field of pet feeders. The device comprises an accommodating barrel, the discharging assembly is connected with the containing barrel, and when the discharging assembly stops working, the containing barrel is kept in a closed state; and the vacuum device is arranged on the accommodating barrel, and the vacuum device is used for extracting air in the accommodating barrel. A connecting piece is arranged between the discharging assembly and the containing barrel. The connecting piece comprises a clamping ring and a connecting piece, wherein a plurality of clamping blocks are arranged on the clamping ring; the first clamping part is arranged on the side, close to the clamping ring, of the discharging assembly, and the first clamping part and the clamping block are detachably assembled; and the second clamping part is arranged on the accommodating barrel and is detachably assembled with the clampi