A storage device for a device for preparing and/or feeding fiber material, in particular, for web manufacturing, comprising a storage chute for the interim storage of fiber material, which includes a chute housing comprising a storage chamber and a supply line leading into the storage chamber, via which the fiber material can be pneumatically conveyed with the aid of conveying air into the storage chamber, comprising a cleaning unit for cleaning the contaminated conveying air situated in the storage chamber, which comprises a cleaning housing including a cleaning chamber, and comprising a semipermeable dividing wall situated in the conveying air flow between the storage chamber and the cleaning chamber, which retains the fiber material in the storage chamber and allows the contaminated conveying air to flow into the cleaning chamber, wherein the cleaning unit comprises a filter element situated in the conveying air flow between the cleaning chamber and the surroundings, via which the contamination in the conveying air can be retained in the cleaning chamber and the filtered conveying air can escape into the surroundings, and the cleaning housing comprises, at the bottom thereof, a collection chamber which is situated underneath the cleaning chamber, and so the contamination retained by the filter element in the cleaning chamber settles, due to the force of gravity, in the collection chamber characterized in that the collection chamber comprises a disposal opening leading out of the cleaning housing, via which the contamination can be removed from the collection chamber and the cleaning unit comprises a transport unit, with the aid of which the contamination can be removed from the collection chamber via the disposal opening. comprising a storage chute for the interim storage of fiber material, which includes a chute housing comprising a storage chamber and a supply line leading into the storage chamber, via which the fiber material can be pneumatically conveyed with the aid of conveying air into the storage chamber, comprising a cleaning unit for cleaning the contaminated conveying air situated in the storage chamber, which comprises a cleaning housing including a cleaning chamber, and comprising a semipermeable dividing wall situated in the conveying air flow between the storage chamber and the cleaning chamber, which retains the fiber material in the storage chamber and allows the contaminated conveying air to flow into the cleaning chamber, wherein the cleaning unit comprises a filter element situated in the conveying air flow between the cleaning chamber and the surroundings, via which the contamination in the conveying air can be retained in the cleaning chamber and the filtered conveying air can escape into the surroundings, and the cleaning housing comprises, at the bottom thereof, a collection chamber which is situated underneath the cleaning chamber, and so the contamination retained by the filter element in the cleaning chamber settles, due to the force of gravity, in the collection chamber characterized in that the collection chamber comprises a disposal opening leading out of the cleaning housing, via which the contamination can be removed from the collection chamber and the cleaning unit comprises a transport unit, with the aid of which the contamination can be removed from the collection chamber via the disposal opening.