Applicantion: It can be used as a screening equipment of paper stock before paper machine.It can also be used as a fine screening in pulp production system. Design Feature: The rotor gets rid of the screen cylinder in the codition of centrifugal force,that prolongs the life for screen cylinder with less abrasion. Separate the impurity from the fiber effciency to avoid slot pluging in the condition of proper flow low plusing force. Its performance can promote the paper machine to be in proper running with less broken paper. Great throughput with more long fiber,Lower power consumption;high screening effciency with less rejects.