APPARATUS AND METHOD FOR INTRODUCING DIVIDEDLY PULP SUSPENSION TO HEADER OF PAPER MANUFACTURING MACHINE

摘要

PURPOSE: To provide the subject device avoiding oversupply of fibers between a pulp suspension distributor and header. CONSTITUTION: This device for the sectional supply of pulp suspension to the header STA of a papermaking machine has a plurality of main inlet lines from a pulp suspension distributor VT which are distributed over the width of the machine. Downstream of a throttle valve Dri, in at least one of the main inlet lines, a subsidiary line for conveying a subsidiary stream of liquid, such as a pulp suspension or water, is connected to the main inlet line and disposed at an angleαorβto the main inlet line. This angle between the main pulp stream and the subsidiary stream is chosen so that a small change in the rate of flow of the subsidiary stream will cause a large change in the rate of flow of the total stream (main pulp stream + subsidiary stream) directed in the same direction or in the opposite direction of the total stream.