An inlet sealing device used for an annealing furnace

Abstract

An inlet sealing device used for an annealing furnace is provided. The inlet sealing device comprises sealing rollers disposed at the inlet of the annealing furnace. The sealing rollers are respectively disposed at the lower parts of two vertically disposed supports. An air cylinder is disposed between the two supports, and is separately connected to the upper parts of the supports through a connecting rod device. The supports are driven to rotate around rotating shafts disposed at the middle parts of the supports by the connecting rod device driven by the air cylinder, so as to drive the two sealing rollers to adjust the roller gap between the two sealing rollers. A handle adjusting assembly is disposed at the outside of each of the supports. The positions of the two handle adjusting assemblies are corresponding to each other. A sealing plate assembly is disposed in a gap between each of the sealing rollers and a furnace shell at the inlet of the annealing furnace. The inlet sealing device separates the atmosphere in the furnace from the atmosphere outside the furnace and prevents scratch defects on surfaces of steel. The sealing plate assemblies are disposed between the roller surfaces and the furnace shell and are adjustable in position. The inlet sealing device is suitable for the field of inlet sealing of various annealing furnaces in process sections of galvanization units.

Description

technical field [0001] The invention relates to a sealing device, in particular to an inlet sealing device applied to an annealing furnace in the process section of a galvanizing unit in a metal cold rolling process. Background technique [0002] At present, an annealing furnace inlet sealing device is installed at the entrance of the annealing furnace in the process section of the galvanizing unit in the metal cold rolling process. This device is an important equipment in the process section of the galvanizing unit. Its main function is to protect the gas in the furnace from loss. Air will not enter the furnace to pollute the atmosphere in the furnace. The working state of the annealing furnace entrance sealing device in the prior art is to enter the strip steel from the gap between the two sealing rollers into the annealing furnace for thermal processing, but Because the roll gap cannot be adjusted, the sealing effect is poor. [0003] At present, in order to solve the pr...

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Problems solved by technology

[0007] In order to solve the problem that the roll gap existing in the annealing furnace inlet sealing device in the prior art cannot be adjusted and the sealing effect is poor, and the current adjustment technology can only be adjusted initially on one side, the leakage is still serious, and it is easy to cause the strip steel to scratch the sealing roll. The strip steel is also easy to scratch, and the quality of heat treatment decreases

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