Sealing valve arrangement for a shaft furnace charging installation
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United States of America Patent
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Oct 29, 2013
Grant Date -
Apr 19, 2012
app pub date -
Jul 5, 2010
filing date -
Jul 3, 2009
priority date (Note) -
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Abstract
A sealing valve arrangement for a shaft furnace charging installation includes a shutter-actuating device for moving a shutter between a closed position in sealing contact with a valve seat and an open position remote from the valve seat. The shutter-actuating device is of the dual-motion type and includes a primary tilting arm on a first tilting shaft defining the first axis and is equipped with bearings supporting the primary tilting arm. A secondary tilting arm carries the shutter is connected to a second tilting shaft that defines a second substantially parallel axis and has bearings that support the secondary tilting arm on the primary tilting arm. The shutter-actuating device has a mechanism configured to tilt the secondary tilting arm when the primary tilting arm is tilted.
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