초록 ▼

Pumping and measuring apparatus for fluid metals comprising an electromagnetic pump which operates in two modes; first, an idling mode in which the pump operates at one rate of flow and continually circulates fluid metal out of a reservoir, through an opening in a conduit and back to the reservoir;

Pumping and measuring apparatus for fluid metals comprising an electromagnetic pump which operates in two modes; first, an idling mode in which the pump operates at one rate of flow and continually circulates fluid metal out of a reservoir, through an opening in a conduit and back to the reservoir; second, a delivery mode in which the pump operates at a higher rate of flow and circulates fluid as in the idling mode, and further raises the fluid metal to a higher opening in the conduit for delivery therethrough. A timing control for selectively adjusting the durations of each mode as well as the time intervals between modes allows high accuracy of measurements of quantities of fluid metal delivered.

대표청구항 ▼

Apparatus for delivering fluid metal to a casting machine comprising: a reservoir for containing fluid metal and having an outlet; electromagnetic pump means having an inlet and an outlet, with said inlet connected to the outlet of said reservoir; and a conduit connected to the outlet of said pump m

Apparatus for delivering fluid metal to a casting machine comprising: a reservoir for containing fluid metal and having an outlet; electromagnetic pump means having an inlet and an outlet, with said inlet connected to the outlet of said reservoir; and a conduit connected to the outlet of said pump means and having (a) a first outlet positioned at a first level and effective for returning metal to said reservoir whenever said pump means is operating above a first predetermined flow rate, and (b) a second outlet positioned at a level above said first outlet and effective for directing metal to said casting machine only when said pump means is operating at a second predetermined flow rate higher than said first predetermined flow rate.