Water cooled glass stirrer
First Claim
1. In a horizontal glassmaking furnace for melting, refining and conditioning glass for discharge to a flat glass forming process comprising a melter and a refiner joined through a waist having substantially less width than either the melter or refiner and including a plurality of glass stirring means positioned in the furnace waist for homogenizing molten glass passing through the waist prior to being conditioned for discharge, the improvement which comprisesa transverse row of at least four mixing paddles, each rotatably mounted for rotation about its axis, whereineach mixing paddle includes an axial section comprising two coaxial iron or steel pipes, an inner pipe and an outer pipe, having an annular space between them and a mixing end section comprising an open bent loop having at the upper ends thereof inlet and outlet openings, said bent loop extending below said coaxial inner and outer pipes and said bent loop being connected to the ends of coaxial pipes for providing flow of coolant substantially throughout the length of the annular space;
- of the inner pipe and of the bent loop,means for rotating said mixing paddles, andmeans for supplying coolant to said paddles during their rotation.
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Accused Products
Abstract
A glassmaking furnace having a melter and a refiner joined through a waist is provided with a plurality of glass stirrers positioned transversely across the intended path of glass flow through the waist. Each stirrer comprises two coaxial pipes, an inner pipe and an outer pipe, the outer pipe having a bent loop extension at one end, such that one end of the bent loop extension is in communication with the annular space between the pipes and the other end is in communication with the inner pipe. Each stirrer is provided with means for supplying a coolant to the pipes and means for rotating the stirrer in order to homogenize glass before it is fully refined by appropriate thermal conditioning in the refiner of the furnace.
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Citations
7 Claims
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1. In a horizontal glassmaking furnace for melting, refining and conditioning glass for discharge to a flat glass forming process comprising a melter and a refiner joined through a waist having substantially less width than either the melter or refiner and including a plurality of glass stirring means positioned in the furnace waist for homogenizing molten glass passing through the waist prior to being conditioned for discharge, the improvement which comprises
a transverse row of at least four mixing paddles, each rotatably mounted for rotation about its axis, wherein each mixing paddle includes an axial section comprising two coaxial iron or steel pipes, an inner pipe and an outer pipe, having an annular space between them and a mixing end section comprising an open bent loop having at the upper ends thereof inlet and outlet openings, said bent loop extending below said coaxial inner and outer pipes and said bent loop being connected to the ends of coaxial pipes for providing flow of coolant substantially throughout the length of the annular space; - of the inner pipe and of the bent loop,
means for rotating said mixing paddles, and means for supplying coolant to said paddles during their rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- of the inner pipe and of the bent loop,
Specification