The invention relates to the technical field of conveying equipment, and discloses a conveying device and process for
feed additive production, comprising a bearing seat on which a cylinder is rotatably mounted and which is driven by a driving
assembly to rotate at a variable speed, and a base which is fixedly mounted on one side of the bearing seat and on which a feeding cylinder and a discharging cylinder are fixedly mounted, by means of variable-speed rotation of the cylinder, raw materials can move in the mode of being attached to the inner wall of the cylinder, when the
air blower blows out the height of
airflow, then the cylinder recovers to rotate at the
constant speed, at the moment,
centrifugal force borne by the raw materials is smaller than gravity, and under the action of the gravity, the raw materials and sundries start to fall off; in the falling process, the raw materials can pass through an area covered by the
airflow multiple times through repeated variable-speed and constant-speed rotation, so that multiple
impurity removal processes are carried out, it is ensured that impurities can be thoroughly removed when the raw materials are conveyed, and the impurities are prevented from being finally mixed into the basal feed.