ELEKTROMAGNETISCHES VENTIL.

摘要

An electromagnetic valve for use for discharge of molten metal from a container (4), comprising a main body (1) providing a discharge passage (3, 7, 8) through which, in use, molten metal will flow from the container; an electrical induction coil (5) located about the passage; means to supply an alternating electric current to the coil whereby the coil provides an alternating magnetic field which induces electric currents in any molten metal in the passage; and a center member (9) located in the passage. The length of the passage (3) above the centre member (9) is less than the diameter thereof, and the passage opens into the container (4) by way of a funnel shaped surface (2) whereby the force provided by the interaction between the magnetic field of the coil (5) and currents induced in the molten metal thereby sets up a vortex movement (14) in the molten metal above the center member (9) when the flow is cut off such that the molten metal in the passage is mixed with that in the container.