Dispensing – Molten metal dispensing – Flow controllers or assists
Patent
1989-12-22
1991-08-13
Kastler, S.
Dispensing
Molten metal dispensing
Flow controllers or assists
222591, B22D 4108
Patent
active
050389777
ABSTRACT:
The refractory block arrangement for a rotary slide valve closure for metal melt containers having a bottom discharge, which arrangement comprises a refractory top block; a refractory rotatable frustoconical discharge block having a discharge flow channel having a vertical central axis that coincides with the central axis of the flow channel of the top block, and an axis of rotation extending at an acute angle to the vertical central axis of the discharge flow channel and intersecting the vertical central axis at a point lying in a cross-sectional plane of the discharge opening; and further comprising a drivable annular entraining casing rotatably supported in the slide valve casing of the rotary slide valve closure for supporting the frustoconical discharge block. To provide an automatic adjustment for manufacturing tolerances in the discharge blocks while minimizing the pressing force at the contacting surfaces and providing a compact structure the frustoconical discharge block is provided with a spherically-shaped peripheral surface portion engaging a corresponding surface in an adjustable annular entraining casing.
REFERENCES:
patent: 3710992 (1973-01-01), Hoffmann
patent: 3760992 (1973-09-01), Bieri
patent: 4728012 (1988-03-01), Monks
Kastler S.
Martin & Pagenstecher GmbH
Striker Michael J.
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