There are seven requirements for the design of closed hood

Closed hood is used for drying and sizing of paper machine, but its design has many requirements. What functions does the design of closed hood need to meet?

1. It is necessary to provide a closed high temperature environment to facilitate the drying of paper sheets, reduce the exhaust air volume, and improve the effect of heat recovery of exhaust air of the hood. The most popular design in the world is that the dry bulb temperature in the hood is 80-85 ℃, and the dew point temperature is 58-62 ℃.

2. The closed hood manufacturer must provide convenience for the monitoring, operation and maintenance of the paper machine operation, and must be able to easily introduce paper and change rolls.

3. The high temperature and humidity in the closed hood is particularly easy to cause condensation. The design of the hood must completely prevent the condensation and dripping of the roof of the hood.

4. Try to keep the air in the hood away from the workshop.

5. Closed hood should be able to regulate the longitudinal exhaust air volume of the paper machine to ensure the exhaust air volume required for each dry part of the paper web.

6. The closed hood shall fully consider lighting, fire fighting and other facilities to meet the needs of all aspects.

7. Closed hood occupies a large area in paper workshop, so its appearance must be beautiful and durable.