JP2517274Y2 - Upper Brick Structure of Frame Brick in Metal Molten Tank - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper brick structure of a frame brick in a molten metal storage tank such as a molten metal filtration tank or a molten metal stirring tank.

[0002]

2. Description of the Related Art A thin metal plate or foil is manufactured by casting a molten metal into an ingot and rolling it. However, if solid impurities such as metal oxides and minute fragments of refractory material contained in the molten metal are mixed into the ingot as they are, pinholes and surface defects occur in the process of rolling them to produce thin plates and foils. Sometimes. In order to prevent this, a ceramic aggregate particle is bonded with an inorganic binder to use a tubular filter having a structure in which a myriad of fine continuous pores are formed between the aggregate particles, and this is held by a side plate to be assembled into a cartridge, As a result, a method of removing solid impurities in a molten metal such as a molten aluminum is adopted.

Such a molten metal filtration apparatus generally has a molten metal filtration tank in which a filter cartridge is installed and a tapping chamber for containing the filtered molten metal.
The partition wall that forms the passage of the molten metal between the filtration tank and the tap chamber is
The filter holding brick (hereinafter, referred to as a frame brick in the present specification) called a frame brick is configured, and the upper portion thereof is configured by a brick (hereinafter, referred to as an upper brick).

[0004]

However, in the molten metal filtering apparatus having such a structure, when the molten metal filtering operation is started, the molten metal is fed to the tap chamber and the heat is applied to the upper portion of the frame brick. The expanded upper brick expands toward the filtration tank side, and due to this expansion force, the side plate of the filter cartridge does not come into close contact with the entire upper brick, resulting in a slight gap. When this state occurs, there arises a problem that the molten metal from the filter leaks through the gap.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above problems in the prior art and provides an upper brick structure of a frame brick formed so that the upper brick located above the frame brick does not expand toward the filtration tank. The purpose is to And, according to the present invention, the object is to form a brick located in the upper part of the frame brick in the upper brick structure of the frame brick in the molten metal storage tank by dividing it, and each divided brick is divided into other bricks. Provided is an upper brick structure characterized by being formed into shapes that can be fitted to each other. Further, in the present invention, when the divided brick is configured to be embedded in a structure arranged on the outer peripheral side thereof and provided with a frame piece for fixing the divided brick, expansion and movement of the divided brick are prevented,
More preferable.

[0006]

The upper brick structure according to claim 1 is formed by dividing the upper brick located above the frame brick into several pieces .
The expansion and contraction at joints between each of the divided bricks
The degree of absorption and the fluctuation of the brick as a whole is reduced.
In addition, since the divided bricks have a structure that allows them to be fitted to each other, there is a deviation even if the divided bricks expand and contract.
Since it does not get rid of, the thermal expansion of the upper brick due to the molten metal is effectively prevented. Here, the structure that can be fitted to each other is, for example, a shape in which a surface of the brick that is in contact with another brick is provided with a notch at a corner and the notch can be fitted to the surface of another brick (so-called). And a convex portion is formed on a surface of the brick that is in contact with another brick, and a concave portion that is fitted with the convex portion is formed on a surface of the other brick that is in contact with the brick (so-called). Dowel structure) etc.

Further, in the upper brick structure according to the second aspect of the present invention, the divided bricks are fixed by being embedded in a structure such as a wall (outer wall portion of the filtration tank) made of an irregular fireproof heat insulating material arranged on the outer peripheral side thereof. Since the frame piece that performs a so-called anchor action is provided, thermal expansion and movement / displacement of the divided bricks can be prevented more effectively.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be further described below based on the illustrated embodiments, but the present invention is not limited to these embodiments. FIG. 1 is a partial side view showing an example of an upper brick structure located above a frame brick according to the present invention, and FIG. 2 is a partial sectional view showing an example of a structure of a molten metal filtration tank and a tapping room of the present invention. In FIG. 2, a molten metal filtration tank A accommodates a filter cartridge 12 in which a plurality of tubular filters 10 are supported by side plates 11 and assembled. Reference numeral B denotes a tap room, in which the molten metal such as the molten aluminum filtered by the tubular filter 10 of the molten metal filtration tank A is accommodated through a passage 14 formed in the frame brick 13. It

As shown in FIG. 1, in the upper brick structure C located above the frame brick 13, the upper surface of the upper brick 15 is provided with notches 16 at the corners, and the notches 16 are provided on the other upper bricks 1.
The notches 18 on the lower surface of 7 are fitted to each other by a hooking structure. The side surfaces of the upper bricks 17 are fitted to the side surfaces of the adjacent upper bricks 19 by a dowel structure (FIG. 3) in the horizontal direction and a hooking structure (FIG. 1) in the vertical direction. Further, as shown in FIGS. 1 and 3, the upper brick 17 has a wall 21 made of an amorphous fireproof heat insulating material arranged on the outer peripheral side thereof.
Frame piece 2 for embedding in structure such as and fixing this
0 is provided. As shown in FIG. 3, the circumference of the tap room B including the upper bricks 17 and 19 is surrounded by the refractory brick 22, the heat insulating board 23, the iron skin 24, etc. to be insulated. Further, 25 is a ceramic paper.

Since the upper brick structure of the present invention has the above-mentioned structure, the upper bricks 15 and 17 are prevented from expanding toward the molten metal filtration tank A side by the heat of the molten metal fed into the tapping room B. As a result, no gap is created between the side plate 11 of the filter cartridge and the upper brick, and leakage of the molten metal does not occur.

[0011]

As described above, according to the present invention, the following effects can be obtained. Since the upper brick structure according to claim 1, wherein is formed by dividing the upper bricks into several, each
Absorbs expansion and contraction to some extent in joints between divided bricks
And the fluctuation of the brick as a whole will be reduced,
In addition, each divided brick has a structure that can be fitted to each other.
Even if the split brick expands and contracts, no deviation occurs, so
The thermal expansion of the upper brick by the molten metal is prevented, and as a result, the molten metal does not leak. In the upper brick structure according to the second aspect of the present invention, since each of the divided bricks is provided with a frame piece for embedding and fixing it in the structure arranged on the outer peripheral side thereof, thermal expansion and movement / displacement of the bricks are further effective. Be prevented.

[Brief description of drawings]

FIG. 1 is a partial side view showing an example of an upper brick structure located on an upper portion of a frame brick according to the present invention.

FIG. 2 is a partial cross-sectional view showing an example of the structure of the molten metal filtration tank and the tapping chamber of the present invention.

FIG. 3 is a plan view showing a peripheral portion of an upper brick structure.

[Explanation of symbols]

10 ... Tube filter, 11 ... Side plate, 12 ... Filter cartridge, 13 ... Frame brick, 14 ... Passage, 1
5, 17, 19 ... Upper brick, 16, 18 ... Notch, 20
... Frame pieces, 21 ... Walls made of amorphous fireproof heat insulating material, 22 ... Fireproof bricks, 23 ... Insulation boards, 24 ... Iron crust, 25 ... Ceramic paper, A ... Metal molten metal filtration tank, B ... Hot water chamber, C ...
Upper brick structure.

Claims (2)

(57) [Scope of utility model registration request] 1. In an upper brick structure of a frame brick in a molten metal storage tank, a brick located above the frame brick is divided and formed, and each divided brick can be fitted to other bricks. The upper brick structure characterized by being formed in the. 2. The upper brick structure according to claim 1, wherein the divided brick is provided with a frame piece for embedding in the structure arranged on the outer peripheral side and fixing the divided brick.