Feeding system for packaging barrel

The utility model discloses a feeding system for a packaging barrel, which comprises a gas inlet drying device for the packaging barrel, a gas outlet drying device for the packaging barrel and a gas outlet drying device for the gas inlet drying device for the packaging barrel, a barrel cover of the packaging barrel is provided with an air inlet and a glue injection port, and a conveying air pipe of the air inlet drying device for the packaging barrel is inserted into the air inlet; the external glue pumping device is connected with the glue injection port; and a sealing device and a hooping device which are matched with each other are arranged at the opening of the barrel cover and the opening of the packaging barrel and are used for sealing and hooping the packaging bag placed in the packaging barrel. After materials are used, the packaging barrel can be recycled without being cleaned, only an aluminum foil bag or plastic needs to be used for hazardous waste treatment, and the production amount of hazardous