The air cover of the dryer is located above the dryer. Its main function can speed up the drying speed of paper and improve the quality and output.
The dryer Hood uses the principles of contact drying and convection drying. High-temperature and high-speed hot air makes the hot wind paper generate fast convection heat transfer, and at the same time, the hot air blows vertically onto the paper, the air film on the interface is damaged or the thickness is reduced, thus the heat and mass transfer coefficients are greatly increased, evaporation is strengthened, the paper machine output and dryer drying efficiency are greatly improved, and the steam consumption is low. Especially in the production of toilet paper, it shows an irreplaceable role, and the loose thickness and softness of paper are obviously improved.
Features: The air cover itself can be designed as a cylinder tension type, which can handle the paper plug phenomenon in operation at any time. The drying cylinder has a large wrap angle and a large heating area of the paper web. The air chamber is arranged in intervals, the wind speed of sending hot air is more than 30 m/s, which is suitable for paper machines with a speed of more than 200 m/min. The use of breathing air cover makes the heating area of the paper web large, improves the efficiency of the dryer and increases the output.
