Paper Machine Dryer Cylinder for Steam Rotary Joint

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Description:

The Dryer Cylinderis a hollow cylinder with a lid at each end made of cast iron, the material is HT200, HT250, composed of the cylinder block and cylinder heads at both ends, outer diameter usually is 1000-3000mm, the role is used to dry the moisture in the paper and trim the paper in the operation process of paper making machine. Its medium to heat is a vapor. The dryer cylinder will have a great impact on the final moisture content of the paper and will also consist of the greatest energy usage in the papermaking process. 

In order to increase the smoothness of the paper surface, it is required to polish the outer surface of the dryer cylinder and polish the inner surface to keep the thickness of the entire dryer wall consistent to ensure the safety and balance of the dryer and even heat transfer everywhere. The function of the dryer cylinder is to dry the moisture in the paper sheet and finish the paper surface.

Working principle:

The saturated steam introduced from the steam joint is condensed inside the dryer, and the heat released makes the temperature of the dryer rise, thereby heating the paper sheet running on the surface of the roll shell. The heat is transferred to paper in the contact between paper and the surface of the dryer.

The steam releases heat and condenses to produce a large amount of condensed water. This condensed water adheres to the inner surface of the dryer due to the centrifugal force of the rotation of the dryer. When the angular velocity is high, a water ring is formed, which hinders the transfer of heat to the surface of the dryer. The siphon tube discharges the condensed water in time. When the vehicle speed is low, a water ring will not form, but condensed water will splash and accumulate in the dryer.

Operation method:

1. Mold processing: make standard split molds (both side or single side positioning);

2. Surface treatment: degreasing, polishing, and cleaning to ensure that the surface is clean, dry, and strong;

3. Reconcile materials: accurate proportions and uniform blending;

4. Application material: ensure bonding, filling, and thickness;

5. Install mold: apply release agent and install and fix it to ensure that the excess material is extruded;

6. Demoulding: after curing, disassemble the mould to clean up the excess material. The material cannot be knocked. It can be removed with a grinder, file, and other tools to meet the installation requirements.

Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs for Paper Machine Dryer Cylinder for Steam Rotary Joint. We are willing to return the love of our customers with first-class products and dedicated service. Let our company and the majority of new and old customers join hands to create a better tomorrow. We will be market-oriented and customer-oriented to provide high-quality products and services to customers around the world.

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