| 摘要 |
PURPOSE:To remove bubbles in molten glass efficiently, by rotating specific stirrers set in the vicinity of a tip of a neck partitioning a glass melting tank from a cooling tank so that bubbles in the glass are collected at the top. CONSTITUTION:The stirres 10 and 10' are set at both sides in the vicinity of the tip of the neck 4 with a narrow width equipped between the melting tank 1 for clearing molten glass and the cooling tank 5. At least one of the stirrers 10 and 10' having the discs 13 at the top and the blades 12 at the bottom is immersed in molten glass. The stirres 10 and 10' are rotated, so that the molten glass 8 is made to flow outward and downward. Consequently, bubbles in the molten glass 8 are collected at the top of the discs 13, and the bubbles are removed efficiently. |
