Pressure fluid teeming valve and method

Details Pressure fluid teeming valve and method Pressure fluid teeming valve and method

1982-05-24

1985-12-03

Rolla, Joseph J.

Dispensing

Molten metal dispensing

Flow controllers or assists

222561, B22D 4108

Patent

active

045561575

ABSTRACT:
Refractory plate valves are shown for controlling flow of molten material with structure providing a uniform controllable variable sealing pressure over the entire area of the sliding plate surface which surrounds the depending nozzle sufficient to deflect the refractory plates into a sealing relationship to prevent the intrusion of the molten material between the plates. The uniform pressure is applied to the sliding plate by pressurizing a fluid within a chamber in the sliding gate carrier that is immediately below a flexible diaphragm supporting the sliding plate. This pressure is applied from an external or internal source and may be controlled during the tapping and teeming phases of the use cycle and additionally may be completely relieved for ease of opening and closing of the device during the service phase of the cycle.

REFERENCES:
patent: 3480186 (1969-11-01), Grosko
patent: 3850351 (1974-11-01), Yoshihara
patent: 4000837 (1977-01-01), Walther
patent: 4063668 (1977-12-01), Shapland et al.
patent: 4116372 (1978-09-01), Horiguchi et al.
patent: 4176769 (1979-12-01), Cudby et al.
patent: 4358034 (1982-11-01), Hind
patent: 4424958 (1984-01-01), Bachmann

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