| 摘要 |
A basin (3) for the forehearth of a glass-making furnace has its internal volume devided into upper (10) and lower (11) portions by means of an annular shoulder, with the horizontal cross-sectional area of the upper portion being significantly greater than that of the lower portion. The base of the basin (3) has in it a glass-discharge outlet (4). When in use, the outlet (4) has aligned with it a relatively-movable cylinder (6) acting as a flow-metering valve. The cylinder (6) may be rotated about its axis at a constant or adjustable speed, or it may be non-rotary and have a separately-driven stirrer movable about it to prevent or reduce the formation of stagnant areas. |
