Shaft furnace charging device equipped with a cooling system and annular swivel joint therefore
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United States of America Patent
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Feb 20, 2018
Issued Date -
N/A
app pub date -
Jul 30, 2015
filing date -
Aug 26, 2009
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Abstract
A shaft furnace charging device and cooling system includes a suspension rotor with a charge distributor and stationary housing. The cooling system includes an annular swivel joint arranged coaxially on an axis, connecting stationary and rotary circuit portions. The swivel joint includes forward connections for receiving cooling fluid from the stationary circuit portion and supplying cooling fluid to the rotary circuit portion; return connections for receiving cooling fluid from the rotary circuit portion; and returning cooling fluid to the stationary circuit portion. The swivel joint includes a partition dividing the annular volume into cavities wherein an internal cavity is partially surrounded by an external cavity, and the forward connections are coupled via one of the cavities and the return connections are coupled via the other of the cavities. The swivel joint includes leakage-permitting communication between the external and internal cavities through annular clearances. Annular flow restrictors are provided in clearances.
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