Production line for producing protein feed by using potato processing residues

The utility model belongs to the technical field of feed processing, and relates to a production line for manufacturing protein feed by using potato processing residues. The production line comprises a potato wet residue storage tank, a plate-and-frame filter press, a first temporary storage tank, a first belt conveyor, a solar house, a second belt conveyor, a fermentation tank, an elevator, a second temporary storage tank and a packaging machine which are sequentially connected, and further comprises a bacterial liquid storage tank, a spraying pipe and a supporting frame, the bacterial liquid storage tank is connected with the spraying pipe, and the supporting frame is arranged above a tank body of the fermentation tank; the spraying pipe is arranged on the supporting frame. According to the production line, a series of operations of filter pressing, airing, fermentation and packaging of the potato processing residues can be realized, the potato processing residues can be processed into protein feed for live