JPH0516202Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a brickwork structure for a portion having a constricted portion, such as the mouth of a converter.

[Conventional technology]

Conventionally, the constriction section of a converter has a structure in which bricks of approximately the same shape are stacked along the outer shell of the furnace body, and the stacked bricks are further held down by a ring-shaped presser welded to the inside of the shell.

In such a structure, the joints of the bricks often become loose, fall off, or break due to impact, such as when the bare metal of the bricks at the mouth of the furnace is dropped with a scrap shoot.

As a countermeasure for this, for example,
As proposed in Japanese Utility Model Publication No. 61-10496, etc., the strength of the bricks themselves can be improved, the shape of the bricks can be made to be easier to lock with each other, and various link mechanisms can be used to improve the strength of the bricks themselves. A method of fixing it has been proposed.

However, all of these methods are mechanically complex, cannot withstand long-term use, and even fall off due to impact such as when loading scrap, so they are not fully satisfactory in terms of preventing them from falling off. I haven't gotten what I expected.

[Problem that the invention attempts to solve]

The purpose of this invention is to obtain a simple structure that can effectively prevent brickwork from falling off in areas with constrictions, such as the mouth of the converter, in order to solve the problems of the conventional mechanism described above. do.

[Means for solving problems]

The brickwork structure of the present invention is fixed longitudinally to the inner surface of the outer shell or steel shell of the furnace, has a width smaller than the thickness of the permanent brickwork section, and is arranged at regular intervals in each permanent brickwork section. a plurality of ribs, a guide rod attached to the wear brick side of the rib substantially parallel to the rib, and a support rod attached to the guide rod at right angles to the guide rod; The support rods are formed by locking and supporting each wear brick stacked inside the permanent brickwork section, and basically correspond to the shape of the bricks of the support mechanism fixed to the outer shell of the furnace, that is, the iron shell of the furnace. It is designed to prevent bricks from falling off without changing the structure.

〔Example〕

Hereinafter, the structure of the present invention will be described by way of an example in which it is applied to a brickwork section Z of the upper constriction section of a converter furnace, which is shown in plan cross section in FIG.

FIG. 2 shows the construction stage of the permanent brickwork section A, and FIG. 3 shows the construction stage of the wear brickwork section B located inside it.

Referring to the figure, reference numeral 1 indicates a holding rib of a permanent brickwork portion A of the constriction part which is welded and fixed to the steel skin 2 of the converter. The ribs 1 are made of iron plates having a width smaller than the thickness of the permanent brickwork section A, and are provided in the longitudinal direction of the converter at intervals of several permanent bricks, usually 5 to 6 pieces. Furthermore, a long ring-shaped hooking fitting 4 is inserted into the long hole 3 formed at the upper and lower positions of the rib 1, and is fixed to the long hole 3 by means such as welding. As shown in FIG. 3, 5 is a guide rod for attaching the support rod 6, which has the same length as the rib 1, and is a hook fitting inserted into the elongated hole 3 of the rib 1. It passes through the ring of No. 4 and is fixed by welding. 7 shows the bricks that come into contact with the rib 1 among the bricks for forming the permanent brickwork part A, and each has a notch on the side of the rib 1 and on the side of the wear brickwork part B, avoiding the hooking fitting 4. 8 is provided. When constructing the permanent brickwork section A, the hooking fitting 4 has a locking function to prevent the permanent bricks from shifting, and the support rod 6 shown in FIG. is fixed along the iron skin 2.

FIG. 3 is a diagram showing the state of formation of the worn brickwork section B inside the permanent brickwork section A.

Referring to the figure, inside the permanent brickwork section A that has been constructed, there is a support rod 6 attached to the guide rod 5.
is fixed by welding. Further, a stopper 10 fixed to each of the wear bricks 9 is locked and fixed to the support rod 6, thereby supporting and fixing the wear bricks 9 to be stacked.

FIG. 4 shows the relationship between the stopper 10 attached to the wear brick 9 and the support rod 6. As shown in FIG.
A connecting portion 11 is formed at the base, and a fixing portion 12 embedded in the wear brick 9 is formed at right angles to the base. Thereby, the fixed part 12 of its base
is embedded in the side surface of the wear brick 9, and the connecting portion 11 at the tip is locked to the support rod 6.

In addition, FIG. 6 is a diagram showing the shape of the hook 4. As shown in FIG.

[Effect of idea]

The brickwork structure of the present invention has a synergistic effect of the support by hooks from the iron shell hardware and the locking structure of the bricks themselves, so that the inner surface of the furnace shell has a radius similar to the drawing part of a converter. Even when applied to brickwork in a section where the cross-sectional area is narrowed in accordance with the height, bricks are completely prevented from falling off.

[Brief explanation of drawings]

FIG. 1 is a view showing the throttle section of a converter to which the apparatus of the present invention is suitably applied, and FIGS. 2 to 6 are views showing embodiments of the present invention. Fig. 2 shows the application to permanent brickwork, Fig. 3 shows the application to wear brickwork, and Fig. 4 shows the relationship between the fasteners attached to the wear bricks and the support rods. Figures 5a and 5b show the shape of the stopper;
FIG. 6 is a diagram showing the shape of the hook. 1...Rib, 2...Iron skin, 3...Elongated hole, 4...
Hook fitting, 5... Guide rod, 6... Support rod,
7... Brick that comes into contact with the rib, 8... Notch, 9
...wear brick, 10...stopper, 11...
Connecting part, 12...Fixed part, A...Permanent brickwork part, B...Wear brickwork part, Z...Brickwork part of the upper drawing part.

Claims (1)

[Scope of utility model registration request] vertically welded to the inner surface of the furnace shell and having a width smaller than the thickness of the permanent brickwork;
a plurality of ribs arranged at regular intervals on each permanent bricklaying portion; a guide rod attached to the wear bricklaying side of the rib substantially parallel to the rib;
The guide rod has a support rod attached at right angles to the guide rod, and the support rod locks and supports each wear brick stacked inside the permanent brickwork section. Brick structure of the throttle part of converter etc.