Papermaking wet web de-watering drum has water extraction channels distributed evenly on outer face and irregularly on inner face

摘要

#CMT# #/CMT# A paper manufacture de-watering assembly has a rotating drum with a perforated mantle (3) that encloses a suction zone (4) coupled to a suction pump via a suction chamber (5). The drum perforations consist of channels that are equally distributed over the drum inner face but irregularly arranged around the outer face. #CMT# : #/CMT# The channels are inclined to the drum radial axis. The channel inlet to the suction chamber is a countersunk drill hole. #CMT#USE : #/CMT# Papermaking wet web de-watering drum. #CMT#ADVANTAGE : #/CMT# The combination if regular and irregular channel distribution minimises noise. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows the general arrangement of the drying drum. 1 : Fibre web 2 : air-permeable belt 3 : drum mantle 4 : suction zone 5 : suction chamber.