SS304 Shell 316 Suction Box Paper Machine Rolls Forged Shaft Fluting Vacuum Couch

S.S 304 Shell 316 Suction Box Forged Shaft Fluting Paper Machine Vacuum Couch Roll

The vacuum couch roll is located at the end of the wire section of the paper machine. Its structure is basically the same as that of the suction roll. The roll shell is made of bronze or stainless steel, and the thickness of the roll shell is determined by the required rigidity and strength. High-strength metal is used to make the vacuum press roll with a thin roll shell, which is beneficial to improve the efficiency of pressing and dehydration. Vacuum press can remove more water from the wet paper, compared with ordinary press, it can improve the dryness of the paper output, the paper web is less crushed, the dehydration is more uniform along the width of the banner, and the felt can be kept in a stable and good condition .
Structural principle
The vacuum couch roll is dehydrated through its internal vacuum chamber, and its dehydration strength mainly depends on the vacuum degree in the vacuum chamber, and the dehydration time and the amount of air passing through the wet paper are only secondary factors. The improvement of the vacuum degree has a significant impact on the dehydration ability of the couch roll.