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US 4,054,060 AGranted
Device for sampling furnace gases
AssigneeIshikawakima-Harima Jukogyo Kabushiki Kaisha
InventorsMasayuki Ueno, Fumiaki Sano
Life of this patent
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Abstract
The present invention discloses a furnace gas sampling device provided with a gate valve of the type in which a swingable valve disk is actuated to seal a lance insertion hole formed through the furnace wall when a lance is retracted away from the furnace and a mechanism for discharging dust and the like out of the valve box while the valve disk sealing the lance insertion hole.
Claims4
A device for sampling gases from a furnace consisting of the provision of
- a. a lance adapted to be moved axially forwardly or backwardly along guide frames by hydraulic driving cylinders, and
- b. a gate valve provided with a swingable valve disk for sealing the furnace when said lance is retracted out of the furnace and a dust discharge mechanism for discharging dust and the like accumulated in a valve box out of the valve box.
Dependencies are inferred from the claim text.