Method and apparatus for pneumatically conveying fiber material

摘要

An apparatus for pneumatically conveying fiber-like material includes a main duct and at least two branch ducts communicating with the main duct in a branching zone. The material is entrained by a gas stream from the main duct into the branch ducts. The apparatus further has an arrangement for generating a countercurrent; an arrangement for introducing the countercurrent into the branching zone; and an arrangement for directing the countercurrent into the main duct parallel to the longitudinal axis of the main duct.