Shutter having a swellable peripheral seal and shutting system comprising it, for a multiple-chamber furnace port
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United States of America Patent
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Sep 9, 2014
Grant Date -
Dec 16, 2010
app pub date -
Feb 5, 2009
filing date -
Feb 13, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to the field of what are called multiple-chamber ring furnaces, for the baking of carbon blocks, and more particularly to a shutter (13) with inflatable seal (15), for sealing off a port (8) of a hollow partition (7) in a multiple-chamber ring furnace, characterized in that its shutter comprises: a rigid core (14) of a substantially rectangular elongated shape, intended to be placed opposite a port (8) of a hollow partition (7) in said furnace, so as to shut off most of the flow area for gas entering via said port (8); and at least one inflatable air chamber (15), retracted in the deflated state in a housing of the core (14) and forming, in the inflated state, a peripheral seal (16) projecting around the perimeter of the core (15) such that said seal (16) extends around its entire periphery in order to complete the sealing off of said port (8).
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