High-alloy cast iron drying cylinder

Abstract

The invention provides a high-alloy cast iron drying cylinder. The high-alloy cast iron drying cylinder comprises a cylinder body, an operation side cylinder cover and a transmission side cylinder cover. The two ends of the cylinder body are fixedly connected with the operation side cylinder cover and the transmission side cylinder cover respectively. The high-alloy cast iron drying cylinder further comprises a steam chamber and a condensate water chamber. The steam chamber is communicated with the operation side cylinder cover. The condensate water chamber is communicated with the transmission side cylinder cover. The steam chamber is fixedly connected with the condensate water chamber. Steam spray holes are evenly distributed in the steam chamber. A condensate water drainage device is arranged on the inner wall of the cylinder body. A water drainage pipe of the condensate water drainage device is communicated with the condensate water chamber. Heat preservation plates are arranged on the two sides of the cylinder body. One end of the cylinder body of the drying cylinder is connected with the operation side cylinder cover, the other end of the cylinder body of the drying cylinder is connected with the transmission side cylinder cover, and the high pressure bearing capacity of the drying cylinder is improved. The steam spray holes are evenly formed in the steam chamber, steam flowing out of the steam spray holes at a high speed evenly impacts a condensate water annular layer on the whole inner wall of the drying cylinder, and the uniform temperature of the whole outer wall face of the drying cylinder is facilitated; the surface hardness is increased through high-alloy cast iron, and the drying efficiency can be easily improved. The drying cylinder has the advantages of being high in strength and pressure bearing capacity, good in sealing effect and the like, and the service life of the drying cylinder can be prolonged.

Description

technical field [0001] The invention relates to a papermaking equipment, in particular to a high-alloy cast iron drying cylinder. Background technique [0002] Drying cylinder is a kind of drying equipment widely used in the papermaking process. With the increase of paper demand, in order to increase the production capacity and improve the drying capacity of the paper machine, the drying cylinder is constantly developing towards increasing the diameter of the drying cylinder and increasing the speed of the drying cylinder. . At present, due to the influence of materials, structure and other factors, the large-diameter high-pressure cast iron dryer cylinder has a small pressure bearing capacity, which cannot meet the production needs of high-speed paper machines and affects its drying effect. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the invention provides a high-alloy cast iron drying cylinder with strong pressure bearing c...

AI Technical Summary

Problems solved by technology

At present, due to the influence of materials, structure and other factors, the large-diameter and high-pressure cast iron dryer cylinder has a small pressure bearing capacity, which cannot meet the production needs of high-speed paper machines and affects its drying effect.

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