the  Dryer is made of cast iron with a hollow cylinder with a cover,consisting of a cylinder and a cylinder head at both ends.the outer diameter is 1000-3000mm,in the operation engineering,the inside pass steam will send the paper drying and ironing light.Cast iron drying cylinder for paper machine is a key part of paper drying-class I pressure vessel.the quantity of cast iron drying cylinder accounts for about 2/3 of the total pressure volume of the paper industry.the materials used manufacture the dryer are generally more than HT200 and HT250.On the manufacturing quality requirement are not allowed to penetrate and excessive sand holes,in order to increase the literal smoothness,requested the dryer surfer polishing and inner surface rotation,to keep the whole cylinder wall thickness has been,to ensure the safety of the dryer,balance and heat evenly throughout.the action of the dryer is used to dryer the water in the paper pages.

Drying cylinder of the main parts include:heat pump,steam supply system of condensed water recovery system,flash tank,differential pressure control system,pressure control system,the flash tank,differential pressure control system,pressure control system,the flash tank,noncondensble gases exclude system,hot water pump,manual control,heating-broken paper-boot program system.