Sealing device of furnace nose for hot-galvanizing aluminum wire

Abstract

The invention relates to a sealing device of a furnace nose for hot-galvanizing an aluminum wire. The sealing device comprises an upper sealing baffle, an air chamber and a lower sealing baffle, wherein one end of the upper sealing baffle is connected with a hot tensioning roller chamber of an annealing furnace, and the other end of the upper sealing baffle is connected with the air chamber; one end of the air chamber is connected with the upper sealing baffle, and the other end of the air chamber is connected with the lower sealing baffle; one end of the lower sealing baffle is connected with the air chamber, and the other end of the lower sealing baffle is connected with a furnace nose expansion joint; the upper sealing baffle comprises an upper sealing gate plate driven by an upper air cylinder; the lower sealing baffle comprises a lower sealing gate plate driven by a lower air cylinder; and a nitrogen introducing hole is formed in the air chamber. The sealing device is compact in structure, simple in operation and control and capable of effectively isolating the air inside and outside the annealing furnace during overhaul or zinc and aluminum residue clearing so as to improve the quality of a product.

Description

technical field [0001] The invention relates to a hot-dip galvanized aluminum wire furnace nose sealing device. Background technique [0002] The annealing furnace of the hot-dip galvanized aluminum production line has high requirements on the atmosphere. The furnace nose is the equipment connecting the annealing furnace and the zinc-aluminum solution pot. During normal production, the furnace nose extends below the zinc-aluminum liquid level to ensure that the furnace is separated from the outside atmosphere. , to prevent oxygen outside the furnace from entering the furnace to oxidize the steel strip. However, when the furnace nose is overhauled and the zinc-aluminum slag in the furnace nose is cleaned, the furnace nose needs to be lifted above the zinc-aluminum liquid level, so that the air outside the furnace will enter the furnace through the furnace nose, affecting the atmosphere in the furnace and oxidizing the strip steel. Contents of the invention [0003] The tec...

AI Technical Summary

Problems solved by technology

However, when the furnace nose is overhauled and the zinc-aluminum slag in the furnace nose is cleaned, the furnace nose needs to be lifted above the zinc-aluminum liquid level, so that the air outside the furnace will enter the furnace through the furnace nose, affecting the atmosphere in the furnace and oxidizing the strip steel.

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