JP2519302Y2 - Molten metal supply / return device for melting furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a molten metal supply / return device for a tiltable melting furnace containing a molten metal for casting.

(Prior Art) In a foundry, for example, as disclosed in Japanese Patent Laid-Open No. 62-144870, a work of pouring the molten metal in a melting furnace from a pouring port into a pouring ladle is performed. . In this case, the melting furnace is configured to be tiltable, and the tilting of the melting furnace pours the molten metal into a pouring ladle suspended by a hoist.

By the way, if the production line is stopped during such pouring work, the molten metal in the pouring ladle will be solidified if left as it is, so it is considered that the molten metal should be returned to the melting furnace from the pouring ladle. However, since this returning work requires suspension of the casting ladle and a special gutter, conventionally, the molten metal in the casting ladle had to be discarded.

(Object of the Invention) Therefore, an object of the present invention is to provide a molten metal supply / return device capable of facilitating the returning work of the molten metal in the pouring ladle.

(Constitution of device) The molten metal supply / return device of the melting furnace according to the present invention forms a molten metal flow path when the molten metal is supplied to the pouring ladle from the tilted pouring port of the melting furnace. A concave portion is provided on one surface, and the molten metal is returned to the melting furnace from the tilted casting ladle. A second concave portion that forms a molten metal flow path when the molten metal is returned is provided on the surface opposite to the one surface. It consists of a gutter and a gutter support member that supports this gutter, and this gutter support member supports the gutter at the position below the pouring port with the first recess facing upward when supplying molten metal, In addition, when returning the molten metal, the gutter is turned upside down from the lower position, and the gutter is supported at the upper position of the pouring port with the second recess facing upward.

(Effect of the Invention) According to the present invention, the gutter is provided with recesses on both sides thereof which serve as a flow path for the molten metal, and the gutter is provided with a gutter support member so that when the molten metal is supplied, the recess on one side is directed upward Since it is supported at the lower position of the pouring spout and is supported at the position above the pouring spout with the concave part of the other surface facing upward when returning the molten metal, pouring from the melting furnace to the pouring ladle. Even if the production line is stopped during hot water operation, the gutter can be flipped from the position below the pouring port to the position above the pouring port without hanging the pouring ladle, and it can also be placed at the position below the pouring port. The molten metal in the pouring ladle can be easily returned to the melting furnace simply by hoisting and tilting the pouring ladle above the melting furnace.

Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a view showing the structure of a melt supply / return device for a melting furnace according to the present invention. 1 is a melting furnace, and its pouring port 1a
Arms 2 for supporting a gutter 4 to be described later are provided on both sides of the arm 2.
Is supported with the shaft 3 as the center of rotation. Further, on the upper surface of the melting furnace 1, a bracket is provided near the pouring port 1a.
14 is erected, and a pin support hole 14a is formed in the upper end of the bracket 14 substantially parallel to the axis.

Reference numeral 4 is a gutter, and this gutter 4 is used when the molten metal is supplied to the pouring ladle from the tilted pouring port of the melting furnace and when the molten metal is returned to the melting furnace from the tilted pouring ladle. It sometimes intervenes between the melting furnace 1 and the pouring ladle 5 to fulfill the function of guiding the flow of molten metal. The gutter 4 has a structure as shown in FIGS. 2 to 4. A first recessed portion 4a whose periphery is surrounded by a projecting edge is provided on one surface, and a second recessed portion 4b whose periphery is surrounded by a projecting edge is formed on the other surface similarly to the first recessed portion 4a. And the first recess
A communication hole 4c is formed between the end of 4a and the end of the second recess 4b. A shaft 4d on which the tip of the arm 2 is pivotally mounted is horizontally provided at the center of both sides of the gutter 4. A hole into which a suitable pin is inserted may be provided instead of the shaft 4d. Further, at one end of the trough 4 (the right end in FIG. 2), a pin insertion hole 4e formed of a through hole extending in a direction parallel to the axis 4d.
Are formed. A similar pin insertion hole 4f is also formed at the other end.

Below the pouring port 1a of the melting furnace 1, a bracket 6 is provided upright from the fixed portion.
At its upper end, a pin support hole 6a that is a long hole that is long in the horizontal direction.
Is provided. As shown in FIG. 1, the gutter 4 has one end supported by a pin supporting hole 6a of the bracket 6 and a pin 7 inserted into one pin insertion hole 4e of the gutter 4 and is supported by the shaft 4d. The melting furnace 1 is supported in such a manner that the center of both sides is supported by an arm 2 whose tip is pivotally attached, and the first concave portion 4a is directed upward and the second concave portion 4b is directed downward.
It is supported almost horizontally above the pouring port 1a. In this case, the communication hole 4c between the recesses 4a and 4b is located on the tip side of the gutter 4.

Since the gutter 4 is supported as described above, even if the melting furnace 1 is tilted, the gutter 4 is kept in a substantially horizontal state, and the tilted molten metal 1 causes the molten metal 8 to flow out from the pouring port 1a. Is poured into the first recess 4a of the gutter 4, and then is poured into the pouring ladle 5 arranged below the first recess 4a through the communication hole 4c.

On the other hand, during the casting operation, if it is necessary to return the molten metal 8 in the casting ladle 5 into the melting furnace 1, the pin 7 is pulled out from the state shown in FIG. 1 to release the gutter 4 from the bracket 6. Then, it is supported only by the arm 2, and the end portion of the gutter 4 on the pin insertion hole 4f side is lifted upward. A metal fitting 15 for hoisting the gutter 4 with a hoist or the like may be provided at this end. Since the base end of the arm 2 whose tip is pivotally attached to the gutter 4 is pivotally attached by a shaft 3, the arm 2 follows the movement of the gutter 4 and rotates clockwise in the figure. The gutter 4 can be inverted so that the pin insertion hole 4f can be aligned with the pin support hole 14a of the bracket 14 on the melting furnace 1. Then, by inserting the pin 7 removed from the pin support hole 6a of the bracket 6 into the pin support hole 14a and the pin insertion hole 4f of the gutter 4, the gutter 4 has the structure shown in FIG. On the contrary, the second concave portion 4b is directed upward and the first concave portion 4a is directed downward, so that the second concave portion 4b is directed substantially horizontally above the pouring port 1a of the melting furnace 1 by the bracket 14 and the arm 2. Will be supported. In this state, since the communication hole 4c between the recesses 4a and 4b is located right above the pouring port 1a of the melting furnace 1, if the casting ladle 5 lifted by a hoist or the like is tilted above the gutter 4, The molten metal 8 is poured into the second concave portion 4b of the gutter 4, and subsequently, through the communication hole 4c, into the pouring port 1a arranged below the molten metal, and returned to the melting furnace 1.

In the above description, the gutter 4 is used to directly pour the molten metal from the melting furnace 1 into the pouring ladle 5. However, when spheroidizing the graphite contained in the molten metal, magnesium alloy is contained. A treatment ladle (not shown) may be used, and once the molten metal is poured into the treatment ladle using the gutter 4, the molten metal may be transferred from the treatment ladle to the pouring ladle.

From the above explanation, the molten metal supply of the melting furnace according to the present invention
Although the structure and operation of the returning device have been clarified, in the present invention, the molten metal supply position and the pouring port below the pouring port 1a are provided near the pouring port 1a of the tiltable melting furnace 1 having the pouring port 1a. Since the gutter 4 which is supported by the arm 2 so as to be reversible is provided between the molten metal returning position above 1a,
It has an excellent advantage that the molten metal 8 in the pouring ladle 5 can be easily returned to the melting furnace 1 without suspending the pouring ladle 5.

In addition, as in the present embodiment, since the communication hole 4c is formed between the end of the first recess 4a of the gutter 4 and the second recess 4b, the gutter 4 is at the molten metal supply position. Allows the communication hole 4c to be positioned directly above the pouring ladle 5, whereby the molten metal poured into the first recess 4a of the gutter 4 moves from the first recess 4a to the communication hole 4c. When the gutter 4 is reliably fed to the pouring ladle 5 through the pouring ladle 5 and the gutter 4 is turned upside down from the molten metal supply position to the molten metal returning position, the communication hole 4c is directly above the pouring port 1a of the melting furnace 1. The molten metal poured into the second concave portion 4b of the gutter 4 is reliably returned from the second concave portion 4b into the melting furnace 1 through the communication hole 4c.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of an apparatus according to the present invention, FIG. 2 is a plan view of the gutter, and FIGS.
Sectional view taken along line III-III and line IV-IV in FIG. 5, FIG.
FIG. 6 is an explanatory view of the operation of the above device. 1 ... Melting furnace, 1a ... Pouring spout 2 ... Arm, 4 ... Gutter 4a, 4b ... Recess, 4c ... Communication hole 5 ... Casting ladle, 6, 14 ... Bracket 7 ... Pin , 8 ... molten metal

Claims (1)

(57) [Scope of utility model registration request] 1. A first recess (4a) for forming a flow path of molten metal when the molten metal is supplied from a pouring port (1a) of a tilted melting furnace (1) to a pouring ladle (5). And a second recess (4b) forming a flow path of the molten metal when the molten metal is returned from the tilted casting ladle (5) to the melting furnace (1). (4) provided on the surface opposite to the surface, and when supplying the molten metal, the gutter (4) is placed in the pouring port (1a) with the first recess (4a) facing upward. At the lower position of the gutter (4) when returning the molten metal.
By reversing the above from the lower position of the pouring port (1a),
A gutter support member (2,6,7,14) for supporting the gutter (4) above the pouring port (1a) with the second recess (4b) facing upward; A molten metal supply / return device for a melting furnace.