Full throttle valve and method of tube and gate change

Details Full throttle valve and method of tube and gate change Full throttle valve and method of tube and gate change

B - Operations, Transporting

22

D

22/85

B22D 37/00 (2006.01) B22D 41/28 (2006.01)

Patent

CA 1136829

ABSTRACT A full throttling valve is disclosed as used on a tundish having a pour tube assembly at its lower portion, a sliding gate at a midportion, and a top plate in the mounting plate beneath the vessel. The sliding gate is shifted into position and then may be translated laterally for throttling and full shutoff. In the full shutoff configuration the tube holder assembly may be similarly moved in and out of position in less than one minute. Magnetic means are provided for each succeeding sliding gate coupled with the throttling mechanism to the end that successive gates may be positioned while in the throttling configuration. Gas passageways for inert gas are provided in the top plate to prevent freezing when full throttle and shutoff occurs. The sliding gate has an offset orifice to accommodate the full shutoff condition. The method contemplates changing the tube holder assembley or the sliding gate with the tube holder being changed while the sliding gate is in full throttle, whereas the sliding gate can be changed in any configuration.

319617

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