초록 ▼

A molten metal vessel includes a first chamber for containing molten metal such as molten aluminum therein, a filtration chamber in which impurities contained in the molten metal are removed, and a second chamber for reserving clean molten metal to be supplied to a casting die. The molten metal flow

A molten metal vessel includes a first chamber for containing molten metal such as molten aluminum therein, a filtration chamber in which impurities contained in the molten metal are removed, and a second chamber for reserving clean molten metal to be supplied to a casting die. The molten metal flows from the first chamber to the second chamber through the filtration chamber. A pair of filters, preferably a pair of cylindrical filters, are disposed in the filtration chamber, so that the impurities contained in the molten metal can be filtered twice. The filters are attached to the bottom of the filtration chamber where molten metal oxides hardly develop, so that the filters are easily replaced with new ones for the maintenance purpose. A rod-shaped heater may be disposed in the cylindrical filters to keep the molten metal temperature in a strictly controlled range. Thus, the impurities are effectively removed from the molten metal through the filters which are easily replaceable.

대표청구항 ▼

1. A molten metal vessel for filtering impurities contained in molten metal and supplying molten metal to a casting die, said molten metal vessel comprising:a heater for maintaining temperature of the molten metal; an impurity separator for separating impurities contained in the molten metal, said i

1. A molten metal vessel for filtering impurities contained in molten metal and supplying molten metal to a casting die, said molten metal vessel comprising:a heater for maintaining temperature of the molten metal; an impurity separator for separating impurities contained in the molten metal, said impurity separator being positioned downstream of said heater and separating the impurities from the molten metal whereby a portion of the impurities float on a surface of the molten metal; a ceramic filter for further filtering any other portions of the impurities left in the molten metal, said ceramic filter being positioned downstream of said impurity separator; and a molten metal supply pump positioned downstream of said ceramic filter for supplying the molten metal to the casting die without exposing the molten metal to outside air, said molten metal supply pump comprising, a container having an inlet port positioned below the surface of the molten metal for introducing the molten metal thereinto and an outlet port for sending out the molten metal to said casting die, an inlet valve for opening and closing said inlet port, an outlet valve for opening and closing said outlet port, an inlet port filter attached onto said inlet port whereby the molten metal is introduced into said container therethrough.