JPH1110316A - Device for feeding fixed quantity of molten metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continuously feed a fixed quantity of molten metal with high accuracy by combining a gas supplying/exhausting means to a suction tank, an intermediate tank and a molten metal feeding means or the intermediate tank and the molten metal feeding tank in a charging type device for feeding the molten metal repeating the molten metal suction and the molten metal feeding while changing over the pressure of the gas. SOLUTION: A partition plate 4 is arranged to the inside at the lower part of a bottomed cylindrical outer vessel 3, and the suction tank 5 is constituted of a bottom plate 3a, the side wall of the outer vessel 3 and this partition plate 4. The upper end of the outer vessel 3 is closed with a cover plate 6, and a molten metal supplying pipe 7 is stood while penetrating the partition plate 5 and the lower end thereof is approached to the bottom plate 3a and opened. The intermediate tank 9 with an inner partition cylinder 8 at a prescribed interval at the outside in the upper part of the molten metal supplying pipe 7, the cover plate 6 and an outer partition cylinder 10, and the molten metal feeding tank 11 with the outer partition cylinder 10 and the inner wall of the outer vessel 3, are constituted. A molten metal feeding passage 12 is attached to the inner wall of this outer vessel 3 and the base end of a molten metal feeding pipe 13 is connected with the upper end side of this passage, and the tip part of the molten metal feeding pipe 13 is faced to a molten metal receiving device and gas pipe 16, 17, 18 for pressurizing is connected and opened with the upper part of each of the suction tank, intermediate tank and molten metal feeding tank 5, 9, 11, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for quantitatively feeding molten metal (for example, molten aluminum) with a high degree of precision and at a constant rate.

[0002]

2. Description of the Related Art Conventionally, there has been known an apparatus for feeding a fixed amount of molten metal by a gas supply / discharge operation (JP-A-4-187).
No. 366).

[0003]

In the above-mentioned conventional apparatus, the desired effect is obtained for the fixed-rate feeding of the molten metal. However, the quantitative accuracy is improved and the influence of the level of the molten metal in the melting furnace is improved. There were requests for improvements in various aspects, such as reducing the amount of hot water and streamlining hot water supply and hot water supply.

[0004]

According to the present invention, as a result of studying various points of the above-mentioned request for improvement, it has been found that a gas supply / discharge means is combined with an intake tank, an intermediate tank and a hot water supply tank or an intermediate tank and a hot water supply tank. As a result, the above-mentioned various points which were considered insufficient were successfully improved.

That is, the present invention relates to an apparatus of the type which is put into a melting furnace, in which a molten metal is fed by repeatedly sucking and feeding hot water by switching gas pressure. Inside the lower part of the tank, a suction tank with a suction pipe is formed via a partition plate, the upper part of the bottomed cylindrical outer tank is sealed with a lid plate, and hot water is supplied through the partition plate of the suction tank. A pipe is planted and opened, an inner partition is inserted into the upper part of the hot water supply pipe, and an upper end of the inner partition is fixed tightly to the lid plate to form an intermediate tank. A partition tube is installed, the lower end of the outer partition tube is tightly fixed to the upper surface of the partition plate, and the outer tank and a hot water tank are configured between the outer partition tubes, the suction tank, the intermediate tank and The gas pipes are connected and opened to the hot water tanks respectively, and the base ends of the hot water pipes are connected and opened to the side walls of the hot water tank. It is a quantitative Okuyu apparatus molten metal characterized by. Still another invention is a fixed-quantity hot water supply apparatus for molten metal, wherein a suction pipe is penetrated through a bottom plate of a suction tank and a lower end of the hot water supply pipe faces a suction tank side opening of the suction pipe. The base end side of the hot water supply pipe is connected and opened to the lower part of the side wall of the hot water supply tank.

Next, an invention without a suction tank is an apparatus of a charging type to a melting furnace, in which a molten metal is fed by repeating hot water supply and hot water supply by switching gas pressure.
A hot water supply pipe is planted and opened at the bottom of the cylindrical outer tank having a bottom, and a cover plate is attached to an upper portion of the outer tank, and a predetermined distance from the hot water supply pipe is provided on a lower surface of the cover plate. The upper end of the provided inner partition is connected, and an outer partition is further provided outside the inner partition to form an intermediate tank and a hot water supply tank. A fixed-quantity hot-water supply device for molten metal, wherein a base end side of a hot-water pipe is connected and opened to a side wall of a hot-water tank.

In the invention having the middle suction tank, if the lower end of the hot water supply pipe faces the upper end of the suction pipe, the molten metal in the suction tank is discharged to the intermediate tank side. Since the molten metal in the melting furnace can also be supplied, the supply of the molten metal to the intermediate tank can be completed in a shorter time.

By regulating the amount of pressurized gas flowing into the hot water tank (for example, by measuring with a flow meter or controlling the time), the amount of hot water can be controlled and the accuracy of the amount of hot water can be improved. .

According to the invention, since the intermediate tank and the hot water supply tank are provided, continuous hot water supply is possible in continuous casting (molding) or the like, and a plurality of molds are arranged in parallel to one hot water supply tank. When necessary, a predetermined amount of molten metal can be sent to a required mold.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a device of the type to be put into a melting furnace, in which a suction tank, an intermediate tank and a hot water supply tank are integrally formed, and a gas pipe is connected to each tank. Therefore, it is a device that can automatically control hot water absorption and hot water supply by supplying and discharging gas. In addition, the intermediate tank and the hot water supply tank are integrally formed, and a gas pipe is connected and opened to each tank to automatically control hot water absorption and hot water supply.

[0011]

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. The present invention is a hot water supply device 2 having a shape capable of charging metal into a melting furnace 1.

That is, the partition plate 4 is installed at a predetermined height above the bottom plate 3a inside the lower portion of the bottomed cylindrical outer tank 3, and the bottom plate 3
a, a suction tank 5 surrounded by the side wall of the outer tank 3 and the partition plate 4
Is configured. The upper end of the outer tub 3 is hermetically closed by a cover plate 6, and a hot water supply pipe 7 is planted through the partition plate 4, and the lower end thereof is opened close to the bottom plate 3a.

An inner partition tube 8 is installed at a predetermined interval outside the upper part of the hot water supply pipe 7, and the upper end of the inner partition tube 8 is fixed to the lower surface of the lid plate 6. While installing the outer partition 10 at a predetermined interval outside the partition 8,
Fixing the lower end of the outer partition tube 10 to the upper surface of the partition plate 4;
The intermediate tank 9 is constituted by the inner partition tube 8, the cover plate 6, and the outer partition tube 10. The hot water supply tank 11 is constituted by the outer partition tube 10 and the inner wall of the outer tub 3. The hot water tank 11
A hot water path 12 is attached to the inner wall of the outer tub 3, and a base end of a hot water pipe 13 is connected to an upper end side of the hot water path 12. It was made to face. In addition, it can also be connected to the mold 15 instead of the hot water receiver 14. In the above description, gas pipes 16, 17, 1, and 1 for pressurization are provided above the suction tank 5, the intermediate tank 9, and the hot water supply tank 11, respectively.
8 is a connection opening. In the figure, 54 is a thermocouple, and 55 is a table.

In the above embodiment, when the hot water supply device 2 is set in the melting furnace 1, the molten metal is moved by the head pressure.
As in 9 and 20, the liquid enters the suction tank 5 from the suction pipe 21 and fills the suction tank 5. At this time, the suction tank 5
The gas (for example, air) that has entered the inside is exhausted from the gas pipe 16 as indicated by the arrow 22, so that there is no problem with the flow of the molten metal into the suction tank 5. Then, when an inert gas (for example, nitrogen gas) is injected from the gas pipe 16 as shown by arrow 23, the molten metal in the suction tank 5 is pressurized by the gas and flows through the hot water supply pipe 7 as shown by arrow 24. It rises and is supplied into the intermediate tank 9 from the tip end of the hot water supply pipe 7 as indicated by arrow 25. In this case, the molten metal is rarely pushed out of the suction pipe 21 into the melting furnace 1, but rather flows from the suction pipe 21 as indicated by arrow 19 due to the reduced pressure (due to flow) in the lower end of the hot water supply pipe 7. There is. After the molten metal in the suction tank 5 has been fed into the intermediate tank 9 as described above, an inert gas is injected into the intermediate tank 9 through the gas pipe 17 as indicated by an arrow 26. It enters the hot water supply tank 11 as indicated by 27. Therefore, the arrow 28 from the gas pipe 18
When the inert gas is injected as shown in FIG. 3, the molten metal in the hot water supply tank 11 is pressurized as shown by arrow 29, and the hot water pipe from the hot water path 12 as shown by arrow 30 as shown by arrow 30. The hot water is sent to the hot water receiver 14 as shown by the arrow 31 in FIG. In the above, since the intermediate tank 9 and the hot water supply tank 10 can supply the molten metal during the hot water supply, respectively, the continuous hot water supply is practically possible, and if the amount of the molten metal used and the hot water supply capacity are taken into consideration, Hot water can be continuously supplied without excess or shortage. 32 in the figure
Is a heating device.

[0015]

Embodiment 2 Another embodiment of the present invention will be described with reference to FIGS. A suction pipe 35 is penetrated and implanted in the bottom plate 34a of the outer tank 34 of the hot water supply device 33, and an inner partition tube 36 is provided outside the suction pipe 35 at a predetermined interval. An outer partition tube 43 is fixed to the lower surface of the lid plate 37 and provided at a predetermined interval outside the inner partition tube 36.
3 is fixed to the inner wall of the bottom plate 34a.
8 and the intermediate tank 38 and the outer tub 34 constitute a hot water supply tank 39, a hot water supply path 40 is provided on the inner wall of the outer tub 34, and an upper part of the hot water supply path 40 and hot water supply The base end of the tube 41 is connected.

In the above embodiment, if the gas is exhausted from the gas pipe 42 and the upper part of the intermediate tank 38 is depressurized as shown by arrow 50, the molten metal in the melting furnace 1 flows from the suction pipe 35 as shown by arrow 44. Then, it flows into the intermediate tank 38 as indicated by the arrow 45. When the valve (not shown) of the gas pipe 42 is switched and pressurized gas is pushed in from the gas pipe 42 as shown by arrow 48, the molten metal in the intermediate tank 38 becomes hot water tank 39 as shown by arrow 51. Flows into. Then, when a predetermined amount of gas flows in and becomes flush with the upper end opening of the outer partition tube 43, the gas pipe 4
Pressing the pressurized gas from 7 as shown by arrow 49
As the surface of the molten metal is pushed down, the molten metal enters the hot water supply path 40 as shown by arrow 52, and then the hot water pipe 41 as shown by arrow 53.
And is sent to a mold or the like.

In the above, if the pressure of the inert gas press-fitted from the gas pipes 42 and 47 becomes higher than the head pressure of the melting furnace, the inert gas may blow out into the melting furnace through the suction pipe 35. It is desirable to always detect the level of the molten metal in the tank 38. If the tip of the suction pipe 35 is lower than the molten metal level of the melting furnace, the gas pipe 42
By keeping the pressure at atmospheric pressure, the molten metal flows automatically.
However, when the pressure of the inert gas flowing from the gas pipe 47 is higher than the atmospheric pressure, the inert gas may not flow automatically due to the head pressure of the melting furnace.

[0018]

According to the present invention, since the suction tank, the intermediate tank and the hot water tank are provided, or the intermediate tank and the hot water tank are provided, the hot water can be quantitatively controlled by supplying and discharging gas. This has the effect of enabling continuous hot water supply and improving the accuracy of the hot water supply amount.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged partial cross-sectional view with a part omitted.

FIG. 4 is an enlarged partial cross-sectional view of another embodiment.

FIG. 5 is a sectional view taken along the line AA in FIG. 4;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 melting furnace 2 hot water supply device 3 outer tank 4 partition plate 5 suction tank 6 lid plate 7 hot water supply pipe 8 inner partition 9 intermediate tank 10 outer partition 11 hot water tank 12 hot water supply path 13 hot water pipe 14 hot water receiver 15 Mold 16, 17, 18 Gas pipe 21 Suction pipe 32 Heating device 33 Hot water supply apparatus 34 Outer tub 35 Suction pipe 36 Partition tube 37 Cover plate 38 Intermediate tank 39 Hot water tank 40 Hot water supply path 41 Hot water pipe 42 Gas pipe 43 Outside Divider

Claims (4)

[Claims] 1. An apparatus of a charging type to a melting furnace, in which a hot water supply and a hot water supply are repeatedly carried out by switching a gas pressure, to a lower inner side of a bottomed cylindrical outer tank. Forming a suction tank with a suction pipe via a partition plate, sealing the upper part of the bottomed cylindrical outer tank with a cover plate, and penetrating the partition plate of the suction tank to plant a hot water supply pipe and opening it. Then, an inner partition is inserted into the upper part of the hot water supply pipe, an upper end of the inner partition is fixed tightly to the lid plate to form an intermediate tank, and an outer partition is installed outside the inner partition. The lower end of the outer partition is tightly fixed to the upper surface of the partition plate to form a hot water tank between the outer tank and the outer partition, and the hot water tank is connected to the suction tank, the intermediate tank, and the hot water tank, respectively. A gas pipe connected and opened, and a base end of the hot water pipe opened and connected to a side wall of the hot water tank. Quantitative water heater. 2. A fixed-quantity feeding of molten metal according to claim 1, wherein a suction pipe is penetrated through a bottom plate of the suction tank and a lower end of the hot water supply pipe faces an opening of the suction pipe on a suction tank side. Hot water equipment. 3. The apparatus according to claim 1, wherein the base end side of the hot water supply pipe is connected and opened to a lower portion of a side wall of the hot water supply tank. 4. An apparatus of a charging type to a melting furnace, in which a molten metal is fed by repeating hot water supply and hot water supply by switching gas pressure, wherein a bottomed cylindrical outer tank is provided. A hot water supply pipe is planted and opened at the bottom, and a cover plate is attached to the upper part of the outer tub, and the upper end of the inner partition provided at a predetermined distance from the hot water supply pipe to the lower surface of the cover plate. Connected, further provided an outer partition tube outside thereof to form an intermediate tank and a hot water supply tank, and connected and opened gas pipes to the intermediate tank and the hot water supply tank, respectively.
A fixed-quantity hot-water supply apparatus for molten metal, wherein a base end side of a hot-water pipe is connected and opened to a side wall of the hot-water tank.