Sealing apparatus for compartment inlet/outlet of atmosphere facility
AssigneeNisshin Steel Co., Ltd.
InventorNakamura Teruhisa
Life of this patent
Estimating the term…
Abstract
Elastic rotation rolls can be installed easily at optimal positions, and stable sealing performance can be attained for an extended period of time. Seal discs 47 are disposed at both ends of the roll shaft 46 of each elastic rotation roll 44 in the axial direction thereof. The outer peripheral surface of the seal disc 47 is closely contacted with the arc-shaped contact surface 52 of a sealing side wall 49 to attain sealing performance at each end face of the roll. Even if the seal disc 47 is displaced with respect to the sealing side wall 49, the sealing performance can be maintained. In this way, the structure of the sealing apparatus can be simplified and the elastic rotation rolls can be installed easily.
Claims17
A sealing apparatus for an inlet and/or outlet of a furnace body of an atmosphere facility through which a metal strip is continuously passed for atmosphere-treating the metal strip by using an atmospheric gas, said sealing apparatus comprising a pair of elastic rotation rolls for engaging the metal strip, and a pair of elastic pads which are biased against said elastic rotation rolls, respectively, over an entire length thereof, each of said elastic rotation rolls comprising:
- a roll body including a roll shaft which has a first end portion and a second end portion;
- a first seal disc and a second seal disc coaxially mounted via bearings on said first end portion of said roll shaft and said second end portion of said roll shaft, respectively, each of said first and second seal discs including a ring-shaped elastic body or a hollow cylindrical elastic body;
- first and second isolating means for isolating rotation of said elastic rotation roll so that rotation torque of said roll body is not transmitted to said first and second seal discs, said first isolating means being disposed between a first end of said roll body and said first seal disc, and said second isolating means being disposed between said second end of said roll body and said second seal disc,
- wherein outer peripheral surfaces of said elastic bodies of said first seal discs of said elastic rotation rolls are adapted to engage one of a pair of sealing side walls, and outer peripheral surfaces of said elastic bodies of said second seal discs of said elastic rotation rolls are adapted to engage the other of the sealing side walls, so as to form sealed boundaries between said outer peripheral surfaces of said elastic bodies of said first and second seal discs and the furnace body.
Dependencies are inferred from the claim text.