JPS5893562A - Ladling device for molten metal - Google Patents

Abstract

PURPOSE:To ladle out the molten metal in a heat holding furnace continuously with simple construction by forming a ladling pipe into an inverted U shape, mounting an outside cylinder which is opened in the bottom part on the suction side thereof and supplying air to the inside of the outside cylinder. CONSTITUTION:A ladling pipe 1 is formed to an approximately inverted U shape, and an outside cylinder 2 which is opened in the bottom part is mounted to a suction side 1a. The upper part of the cylinder 2 is closed by a top plate 3 and is welded to the suction side 1a of the pipe 1. When the cylinder 2 is put into a heat holding furnace A, the remaining melt B enters the inside of the cylinder 2 and the inside on the suction side 1a of the pipe 1 up to the same level as that of the remaining melt B in the furnace A, by which an air chamber (a) is formed in the upper part of the outside cylinder. When air is supplied into the chamber (a) through an air supply pipe 4, the melt surface in the cylinder 2 is pushed toward the low part 2a and the remaining melt B in the cylinder 2 is supplied through the suction port 1'a of the pipe 1 to the suction side 1a. When the melt B flows to the discharge side 1b by passing over the peak part of the pipe 1, the supply of the air is stopped and thereafter the melt B is ladled out continuously by a siphon effect.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pumping device 52 for transferring residual metal (molten metal) in a heat insulating furnace (crucible) in a die casting casting area to another container such as an ingot case.

Conventionally, various types of pumping devices 62 of this type have been developed, such as molten metal pumps, electromagnetic pumps, and magnetic troughs, but a device that is easy to handle, has few breakdowns, and is inexpensive has not yet been provided, and the practical one is a ladle C. ; It is pumped out manually. but,
Manual pumping requires a lot of effort and time, so
A pumping device that is easy to handle and inexpensive has been long awaited.

The present invention aims to provide a molten metal pumping device 1 that is easy to handle, less prone to failure, and inexpensive.

Hereinafter, an example of implementing the present invention will be explained based on the drawings.

The pumping pipe (11) is formed by bending a hollow pipe of an appropriate thickness into a substantially inverted U-shape or a substantially inverted V-shape, with one side facing the suction side (l
a), and the other side is the discharge side (1 o'clock), and the suction side (la)
4: Attach the outer cylinder (21) with the bottom open and the top closed.

The outer cylinder (21 is inside the heat insulating furnace) is long enough to form a residual metal (molten metal) (2 air chambers ζ above the molten metal level (jx) of El) when it is put into the insulating furnace. (1) Suction side (l
Outside C of a): Fitting shape (= When installed, C2, its upper part is closed with the top plate (3B) and the suction side (la) of the pumping pipe (11)
Two welds.

In addition, the suction side (1a) and the outside 1@(21 of the pumping pipe are the same body (
= Can also be molded. The bottom (2a) of the outer cylinder (2) is left open so that the remaining hot water (B) in the heat retention furnace can freely pass through, and the top plate (31) is connected to the air supply pipe (4B to the air chamber H). Connect i2.
- Therefore, connect the suction side (la) of the pumping pipe (1) to the outer cylinder (21 and 6: Inner furnace C two people, five air supply pipes (
4: If the outside air C2 is opened or the inside of the outer cylinder 121 is kept under negative pressure, the inside of the outer cylinder (21) and the suction side of the pumping pipe (11)
In 1a), the remaining hot water (B) in the insulating furnace is at the bottom of the
The remaining hot water (5) in the heat insulating furnace (4) penetrates from the suction port (l) to the same level as the hot water level (1), and the upper part of the outer cylinder (21) and the hot water level (4j) forms an air chamber (a) (the state shown in Fig. 1).

After that, from the air supply pipe (4) to the outer cylinder (2℃ air chamber ((I)
When Q is supplied, the hot water level (jl) inside outside 1@ (2) is pushed toward the bottom (21k), and the remaining hot water tB inside outside 111i (2)
x) is from the suction port (l'a> of the pumping pipe +11) to the suction side Qa
) i-supplied (state in figure 82). At this time, the outer cylinder (
2) Make sure that the remaining D inside does not escape from the first part (2a) of the insulating furnace (=, the bottom (2a) of the outer cylinder (2)). i4 cylinders (2
The remaining hot water (B1) in 1 is sucked into the extraction pipe (11C: for easy entry = extraction tube electric 1) = 10 is drawn into the outer cylinder (
2) is positioned ζ2 above the bottom (2a). Then, the amount of hot water @ 8) in the suction side (la) of the draw-out pipe (1) increases and reaches the top (lo) '4I of the draw-out pipe (1), reaching the discharge side 06-2. When the temperature drops below the hot water level (ji), the air supply from the air supply pipe (41 to the outer cylinder) is stopped, and the air supply pipe (41 is opened to the outside air) and the bottom of the outer cylinder [2 If the heat insulating furnace is kept sufficiently away from the bottom surface tA)', the remaining hot water (BI) in the insulating furnace will pass through the suction port (1'a) from the bottom (2a) of the outer cylinder (2) due to the knife-on effect. C2 becomes C2 so that C2 is continuously pumped out.
) is pumped out, if you want to stop it from flowing out midway (2), supply air from the air supply pipe (41 to the inside of the outer cylinder 1 to increase the hot water level (JQ) in the outer cylinder 2). Just press down below the suction port (1'a) of the pumping pipe (1).

The present invention is constructed in the following manner 4: The pumping pipe is formed into a substantially inverted U-shape, and the suction side C of the pumping pipe is installed as an outer cylinder with the bottom open and the top closed, and the outer cylinder and the air supply pipe are connected. Since the suction side of the pumping pipe and the outer cylinder are put into the furnace together with the outer cylinder (-warm insulation), first C air is supplied, and then a small amount of air is supplied to the inside of the outer cylinder with the supply pipe. The remaining molten metal in the furnace can be continuously pumped out, the handling is extremely easy and safe, and the structure is simple, there is no failure, and it can be provided at low cost.

Therefore, the intended purpose can be achieved.

[Brief explanation of drawings]

1 and 2 are cross-sectional views showing one embodiment of the apparatus of the present invention. In the figure, (11 is the pumping pipe, αa) is the suction side, (21 is the outer cylinder, G1 is the top plate, and the ship is the air supply pipe. Patent applicant: Fuso Light Alloy Co., Ltd. 1rlA

Claims (1)

[Claims] The extraction pipe is formed into a substantially inverted U-shape ζ2, and the suction side of the extraction pipe;
A device for pumping out molten metal, characterized in that it is mounted as an outer cylinder with an open bottom and a closed top, and that the outer cylinder is connected to a supply pipe.