JPH027867Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a molten metal discharge device that supplies molten metal of good quality from which impurities have been removed from a furnace body that holds molten metal.

[Technical background of the invention and its problems]

Conventionally, the composition of molten aluminum is adjusted in a holding furnace, but the molten metal contains impurities such as oxides and refractory material scraps, and in order to remove these impurities, the molten metal is transferred from the holding furnace to a casting machine, for example. A filter box was installed in the middle of the supply, and there was a means of filtering the molten metal through a metal filter using the head of the molten metal. With this method, as the metal filter for removing impurities gets clogged over time due to the head difference, the amount of permeation of the molten metal decreases, so the metal filter must be replaced frequently, and sometimes There were drawbacks such as the inability to supply the required amount.

[Purpose of invention]

This invention was devised based on the above-mentioned circumstances, and provides a molten metal discharging device that can use a metal filter for removing impurities from molten metal for a longer period of time than before, and can always supply the required amount of molten metal. There is a particular thing.

[Summary of the idea]

The outline of the present invention to achieve the above object is that a pump for discharging molten metal is installed in a furnace body that holds molten metal, and a filtration chamber is provided around the suction port of the pump, in which the inside of the furnace body is partitioned with a metal filter. It is characterized by the presence of

[Example of idea]

Next, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, a main chamber 5 for holding molten metal and a filtration chamber 4 with one end partitioned off by a metal filter 3 are provided in the furnace body 1, and a pump 2 is installed in the filtration chamber 4. It has been done.

The main chamber 5 has a heating device 6 using a burner and an opening/closing port 7, and a lid 13 is provided on the ceiling of the filtration chamber 4.
Grooves 14 are provided on the back surface of the lid 13 and on the wall surface of the furnace body.
A metal filter 3 is fitted into the filter 4 and installed in a replaceable manner, and the metal filter 3 is a commercially available plate-shaped ceramic filter. Further, the pump 2 is attached to the lid 13, and its suction port 8 is provided directly above the hearth 9 in the filtration chamber 4, and the discharge port 10 of the pump 2 is provided protruding above the lid 13. This is a connection of pipes 11 that lead to.

As another embodiment, the example shown in FIGS. 3a and 3b is one in which a filtration chamber 4 is provided with a metal filter 3 formed in a cylindrical shape, and a suction port 8 of a pump 2 is provided inside the filtration chamber 4. In the examples shown in a and b, a metal filter 3 is formed into a cylindrical shape with one end open, similar to the shape of the lid of a tea caddy, and a filtration chamber is formed by a space formed with the open end touching the hearth 9. 4, and the suction port 8 of the pump 2 is provided in contact with the upper wall surface of the metal filter 3.

When discharging molten aluminum from the furnace body 1 using the discharge device configured as described above, the furnace body 1
The filtration chamber 4 is filled with molten metal through the metal filter 3 at the same level as the main chamber 5, and when the pump 2 is operated there, the suction force of the pump 2 turns the molten metal in the main chamber 5 into metal. The molten metal is forced to flow into the filter chamber 4 through the filter 3, and the filtered clean molten metal is discharged from the pipe 11 through the pump 2.

[Effect of idea]

As explained above, this device pumps the molten metal containing impurities through the metal filter 3.
Since the structure is such that the molten metal is forcibly drawn into the filtration chamber 4 and discharged outside the furnace body 1, when the molten metal in the furnace body 1 is discharged, impurities contained in the molten metal are removed from the metal filter 3.
is removed and discharged as high-quality molten metal.
Furthermore, even if the metal filter 3 becomes clogged, the molten metal is passed through by the strong suction force of the pump, so the filtration ability is not reduced and clean molten metal can be discharged for a long period of time.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the molten metal discharging device according to the present invention as seen from the front, Fig. 2 is a sectional view of the same as seen from the plane, and Figs. 3 and 4 show the main structure of other embodiments. 3a is a sectional view, FIG. 3b is a partially cutaway plan view, FIG. 4a is a sectional view, and FIG. 4b is a partially cutaway plan view. 1...furnace body, 2...pump, 3...metal filter, 4...filtration chamber, 8...suction port.

Claims (1)

[Scope of utility model registration request] A molten metal discharge device that has a pump that discharges molten metal installed in a furnace body that holds molten metal, and a filtration chamber that partitions the furnace body with a metal filter around the suction port of the pump.