Correction roller expansion joint

Abstract

The invention discloses a correction roller expansion joint, which comprises flanges and a drum-shaped skin, wherein the flanges are fixedly connected with the two ends of the drum-shaped skin to form a compensation structure, the drum-shaped skin is of a multi-layer composite structure, and comprises steel wire nets, fireproof silicone I, ceramic cloth I, fireproof silicone II, ceramic cloth II and fireproof silicone III which are sequentially adhered from interior to exterior, the inner side of the fireproof silicone I is heated by high temperature and is calendered on the steel wire nets, the outer side of the fireproof silicone I and the inner side of the fireproof silicone II are melted into the ceramic cloth I by high temperature, and the outer side of the fireproof silicone II and the inner side of the fireproof silicone III are melted into the ceramic cloth II by high temperature. The further improvement is characterized in that each steel wire net is a single-layer or multi-layer metal wire net, the inner wall of each steel wire net is applied with heat insulation coating, the outer side of the fireproof silicone III is applied with fireproof paint, and the outer layer of the fireproof paint is applied with airtight coating. The correction roller expansion joint has the advantages of heat insulation, fireproof, vibration-proof and corrosion-resistant effects, and attractive appearance.

Description

technical field [0001] The invention relates to a pipeline compensation device, in particular to a non-metallic expansion joint for annealing furnaces in the iron and steel industry. Background technique [0002] Furnace roller expansion joints are mainly used in annealing furnaces in the iron and steel industry, and are important components to ensure the stability of the furnace roller system and the entire unit. The expansion joints of the furnace rolls used in ordinary furnace rolls can be made of stainless steel bellows expansion joints lined with thermal insulation materials, and the radial and axial compensations are required to be about 20mm. The radial and axial compensation of the correction roller expansion joint used by the correction roller is required to be about 100-150mm, which is difficult to achieve for the expansion joint of the stainless steel bellows, and a non-metallic correction expansion joint is required. At present, the expansion joints of domestic ...

AI Technical Summary

Problems solved by technology

At present, the expansion joints of domestic deviation-correcting rollers can meet the radial and axial compensation requirements required for the use of deviation-correcting rollers, but the heat-resistant temperature can only be low, and the outer wall temperature of expansion joints is high, easy to incinerate, fall off, air leakage, and short service life. and other serious defects, therefore, most of them have to rely on imported

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