| 摘要 |
An improved three-plate slide gate, particularly for a tundish, of the type comprising two fixed plates (1,2) rigid with the tundish (3) and provided with a coaxial hole, and, interposed therebetween, a mobile plate (4) provided with a hole and supported by a frame (7) driven in such a manner as to cause said plate to slide longitudinally between a position in which its hole is aligned with those of the two fixed plates and a position of non-alignment, and a plurality of springs (11) acting in the sense of urging the lower fixed plate against the upper fixed plate to provide sealed contact between the corresponding surfaces of the fixed plates and mobile plate substantially for any position of this latter, characterised in that the springs (11) are transversely fixed with respect to the tundish and have their lines of action lying within the longitudinal dimensions of the mobile plate (4) for any position of this latter.
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