Rotary valve closure for a container having a bottom discharge o

Details Rotary valve closure for a container having a bottom discharge o Rotary valve closure for a container having a bottom discharge o

1989-12-22

1991-07-02

Kastler, S.

Dispensing

Molten metal dispensing

Flow controllers or assists

222591, B22D 4108

Patent

active

050279874

ABSTRACT:
A rotary slide valve closure for metal melt containers having a bottom discharge wherein the rotary slide valve closure has a fixed refractory top block and a rotary refractory discharge block sealingly tight engaging the fixed refractory top block and including a discharge flow duct positionable coaxial with the flow duct of the fixed refractory top block. An assembly plate is attached to the bottom of a metal melt container. Joint means pivotally supports a slide valve casing on the assembly plate. The rotary slide valve closure also includes an annular entraining casing pivotally arranged in the slide valve casing for supporting the rotary refractory discharge block. The rotary discharge block has a substantially flat sealing and a sliding surface engaging the fixed refractory top block and a spherical portion extending below the sealing and sliding surface. The entraining casing has a spherical inner surface engaging the spherical portion of the rotary refractory discharge block.

REFERENCES:
patent: 3710992 (1973-01-01), Hoffmann
patent: 3760992 (1973-09-01), Bieri

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