| 摘要 |
<p>PURPOSE:To improve the melt efficiency of chips without widely collapsing the shape of the outer surface of the whole of molten chips by a method wherein the inflow hole of a charge container communicated to the outflow hole thereof is formed in the pipe wall of a delivery pipe mounted on the delivery side of a pump with the aid of which molten chips is conveyed. CONSTITUTION:Molten chips 2 in a melting furnace 1 flows in a charge container 10 through a feed port 12 of the container 10. With this state, when a pump 30 is run with the aid of an air motor 31, molten chips 2 in the melting furnace sucked with the aid of the pump 30 is delivered in an outer pipe 21 through the right end of an inner pipe 23 of a delivery pipe 20, and the velocity of flow of the molten chips 2 is decreased in the outer pipe 21. As a result, the pressure of the molten chips at the right end of the inner pipe 23 is remarkably decreased, and since an inflow hole 24 communicated with an outflow hole 13 of the charge container 10 is formed in the part, the molten chips 2 passing the pump 30, finally, produces a drive flow. The molten chips 2 in the charge container 10 is sucked with a force in the delivery pipe 20, and the two flows are joined together and the mixture is returned through the delivery pipe 20 to the melting furnace 1. This constitution enables improvement of the melting efficiency of chips.</p> |
