KR100408675B1 - Device for repairing eroded portion of electric furnace wall - Google Patents

Abstract

The present invention relates to a device for repairing a local erosion part of the furnace wall in the furnace, the local erosion repair device of the furnace wall according to the present invention is a rectangular box form, one side of the lower surface is a height-fixed stand that is seated in the furnace angle The other side of the height adjustable stand which is seated on the upper surface of the roof is installed, the water outlet is formed in the lower portion of one side of the height fixed stand is installed, the chute guide is installed on one side, on the other side facing one side Maintenance box with rod guides; A groove for inserting the chute guide into one surface is formed to be in close contact with one side of the repair material loading box, and the lower portion is lifted up and down by its own weight. The upper portion of the repair material inlet for introducing the repair material discharged from the repair material discharge port is formed. The lower portion of the water outlet is formed, the chute is formed in the upper surface of the first rod penetrates; And a first rod inserted into the groove of the chute upper surface to ascend and descend in the chute, a second rod inserted into the rod guide to ascend and descend within the rod guide, and a connection member axially connected to the first and second rods, respectively. By including a rod made of a hook groove formed in the connecting member to be moved by a crane, there is an effect that the life of the furnace body is extended.

Description

Device for repairing eroded portion of electric furnace wall

The present invention relates to a device for repairing a local erosion of the furnace wall in the furnace, more specifically, by using a small amount of the coating for repairing the furnace wall to accurately repair the local erosion by improving the productivity and locality of the furnace wall extending the life of the furnace body It relates to an erosion repair device.

In general, during the melting process in the electric furnace 40, due to the vortex phenomenon of the molten metal edema 42 eroded in the furnace wall 41 as shown in Figure 4 is eroded. The slag 43 is thickly fused to the upper part of the furnace wall 41 and the erosion degree of the soft wire 42 becomes worse as it goes down to the lower part thereof. It is called.

FIG. 5 is a perspective view showing the operation of repairing the furnace wall 41 in the furnace 40 using the conventional repair apparatus 50. As shown in the drawing, the furnace angle of the furnace body of the furnace 40 is conventionally illustrated in FIG. 45) a repair device 50 loaded with quicklime (CaO) and magnesia (MgO), which are the repairing materials for the furnace wall coating 46, is placed therein, and the melting process of the electric furnace 40 is performed by introducing quicklime and magnesia into the furnace. Quicklime and magnesia have been naturally coated on the furnace wall 41 by the temperature in the furnace.

When this operation is well coated on the furnace wall 41, it is difficult to coat the local erosion portion 44.

That is, since the slag 43 is thickly fused to the upper portion of the furnace wall 41 and the local erosion portion 44 is located at the lower portion thereof, the quicklime injected from the repair device 50 seated on the furnace 45 is localized to the furnace wall. There was a problem that it is difficult to reach the erosion 44.

In addition, since the total amount of quicklime and magnesia loaded in the repair device 50 is dropped into the furnace wall 41, there is a problem in that the furnace wall coating is excessive, resulting in a decrease in work efficiency.

The present invention is to solve the problems as described above, its purpose is to drop a small amount of coating material at the exact location of the local erosion part to effectively repair the local erosion part of the furnace wall local erosion of the furnace wall is extended the life of the furnace wall It is to provide auxiliary repair equipment.

1A and 1B are perspective views showing a local erosion repair apparatus of a furnace wall according to the present invention as viewed from the front and rear, respectively.

2A and 2B are perspective views illustrating one surface of the repair material loading box in which the chute is installed and one surface of the chute in close contact with the maintenance material loading box.

3 is a cross-sectional view showing the operation of repairing the local erosion of the furnace wall using the repair device according to the invention.

4 is a perspective view illustrating a state in which a furnace wall is eroded by a melting process in a general electric furnace.

Figure 5 is a perspective view showing the operation of repairing the furnace wall in the electric furnace using a conventional repair device.

In order to achieve the object as described above, the local erosion portion repair apparatus of the furnace wall is seated over the upper surface of the furnace angle and the roof of the furnace is a device for dropping the repair material to the local erosion portion of the furnace furnace wall, square It is box-shaped, and one side of the lower surface is provided with a height fixed stand that is seated on the furnace angle, and the other side of the lower surface is provided with a height adjustable stand that is seated on the upper surface of the roof, and a repair material outlet is formed at the lower side of one side where the height fixed stand is installed. And, on one side of the chute guide is installed, on the other side facing one side load rod is installed maintenance material; A groove for inserting the chute guide into one surface is formed to be in close contact with one side of the repair material loading box, and the lower portion is lifted up and down by its own weight. The upper portion of the repair material inlet for introducing the repair material discharged from the repair material discharge port is formed. The lower portion of the water outlet is formed, the chute is formed in the upper surface of the first rod penetrates; And a first rod inserted into the groove of the chute upper surface to ascend and descend in the chute, a second rod inserted into the rod guide to ascend and descend within the rod guide, and a connection member axially connected to the first and second rods, respectively. It characterized in that it comprises a rod portion consisting of a hook groove formed in the connecting member to be moved by a crane.

Hereinafter, with reference to the accompanying drawings for the configuration of the local erosion portion repair apparatus of the furnace wall according to the present invention will be described in detail.

Figure 1a is a perspective view showing a local erosion portion repair apparatus of the furnace wall according to the present invention viewed from the front and rear, respectively, Figures 2a and 2b is one side of the chute that is in close contact with the repairer loading box and the repairer loading box respectively installed chute This is a perspective view shown. 3 is a cross-sectional view showing the operation of repairing the local erosion of the furnace wall using the repair device according to the invention.

As shown in these drawings, the local erosion part repair apparatus of the furnace wall according to the present invention is large, the chute (2) in close contact with the one surface of the repair material stacking box (1), the repair material stacking box (1) is installed on the lower surface And it consists of three parts of the rod part which is raised and lowered inside the chute 2 and the maintenance material loading box 1 by a crane.

The repair material loading box 1 is in the form of a rectangular box, and a height fixing stand 3 is installed on one side of the lower surface of the furnace 40 of the electric furnace 40, and the other side of the lower surface is mounted on the upper surface of the roof 47. The height adjustable stand 4 is installed.

The height-adjustable stand (4) is designed to adjust the height so that the repair material stack (1) is seated on a flat floor or when it is seated over different parts such as the angle (45) and the roof (47). All are designed to be level without tilting.

In one embodiment of the present invention, the height-adjustable stand (4) is made up of a leg (6) to be raised and lowered by being fitted to the protrusion (5) and the protrusion (5) installed on the lower surface of the water holding box (1), leg ( Grooves 7 are formed in the protrusions 5 connected to the 6, two grooves 8a and 8b are formed in the leg 6 at different heights, and the protrusions 5 are provided in the protrusions 5. A pin 9 is inserted into the groove 7 of the crankshaft and the grooves 8a and 8b of the leg 6 to fix the leg 6 to the protrusion 5. At this time, when the pin 9 is inserted into the groove 8b of the lower portion formed in the leg portion 6 and the groove 7 of the protrusion 5, the height of the height adjustable stand 4 is a height fixed stand 3 Is equal to the height, and the distance between the two grooves 8a and 8b formed in the leg portion 6 coincides with the height of the roof upper surface from the angle of elevation.

That is, when the repairing material stack 1 is seated on a flat bottom surface, the pin 9 is inserted into the lower groove 8b formed in the leg portion 6 and the groove 7 of the protrusion 5, and the repairing material stacking ( 1) The pin 9 is inserted into the groove 8a of the upper portion formed in the leg portion 6 and the groove 7 of the protrusion 5 when seated to cover the upper surface of the furnace 45 and the roof 47. Will be.

The lower part of the side surface 10 of the repair stand (1) in which the height-fixed stand (3) is installed, the repair outlet (11) is formed, through which the repair material loaded inside the repair stand is discharged. At this time, in order to smoothly discharge the repair material dropped by its own weight, it is preferable that the interior of the repair material loading box 1 has a structure in which the width thereof becomes narrower toward the lower part such as a hopper. In addition, the bottom surface 12 is also preferably inclined so as to be lowered toward the water outlet 11.

The chute guide 13 is installed on one side surface 10 of the repair material loading box 1 in which the repair material discharge port 11 is formed.

In one embodiment of the present invention, the chute guide 13 divided into two parts at both edges of the water outlet 11 is provided in the longitudinal direction of one side surface 10.

In order to prevent the chute 2 which is guided by the chute guide 13 and lifted up and down on one side 10 of the repair material loading box 1 from being released from the repair material loading box 1, one side of the repair material loading box 1 (10) An upper stopper 14 and a lower stopper 15 are attached to the upper and lower portions, respectively.

In this way, the rod guide 17 is installed on the other side 16 facing the one side 10 of the repair material loading box 1 in which the chute guide 13 is installed. In addition, in order to prevent separation of the rod 18, which is guided by the rod guide 17 and lifted up and down on the other side 16 of the maintenance material loading box 1, the upper side of the other side 16 of the maintenance material loading box 1 1 Rod stopper 19 is attached.

Meanwhile, the chute guide groove 20 is formed on one surface, and the chute guide 13 is inserted into the groove so that the chute guide groove 20 is brought into close contact with one side surface 10 of the water holding box 1 in which the chute guide 13 is installed. The chute 2 is installed.

The water inlet 21 is formed on the upper surface of the chute 2 on which the chute guide groove 20 is formed, and the water outlet 22 is formed on the lower side of the other surface facing the one surface on which the water inlet 21 is formed. That is, the repairing material discharged from the repairing material loading box 1 through the repairing material outlet 11 is introduced into the chute 2 through the repairing material inlet 21 and then lowered through the repairing material outlet 22 below the chute 2. Is dropped into the furnace wall.

The chute 2 of the repairing material drops to the bottom of the furnace wall of the furnace 40 in which the slag 43 is thickly fused, and then drops the repairing material. The repairing material 44 is precisely applied to the local erosion part 44 at the lower part of the furnace wall. In order to drop, it is preferable that the repair material discharge port 22 is formed to protrude from the other surface as in one embodiment of the present invention.

When the chute 2 descends, a chute stopper 23 is attached to the side of the chute 2 so as to contact the lower stopper 15 attached to the lower portion of the side surface 10 of the repair material loading box 1. When the stopper 23 comes into contact with the lower stopper 15, the lowering of the chute 2 is stopped.

In order to raise the chute 2 lowered by its own weight to the initial height, a hook 24 is provided on the upper surface of the chute 2, and when the sovereignty of the crane is connected to the hook 24, the chute 2 ) Is raised.

In addition, a groove 26 through which the rod 25 penetrates is formed in the upper surface of the chute 2, and a rod 25 is installed to be inserted into the groove to move up and down inside the chute 2. Reference numeral 25 is referred to as a first rod for convenience.

A rising stopper 27 having a size larger than that of the groove 26 on the upper surface of the chute 2 is formed at the lower end of the first rod 25 so as not to be separated from the chute 2 when the first rod 25 rises.

The second rod 18, which is another rod that is lowered and lowered in parallel at the same height when the first rod 25 is lowered, is inserted into the rod guide 17, and the first and second rods are parallel to each other. A weight 28 is attached to the second rod 18 for one ascent.

In one embodiment of the present invention, the weight 28 is installed on the rod 18 inserted into the rod guide 17 via a connecting member, and the weight 28 is located outside the rod guide 17. The second rod stopper 29 is installed outside the weight 28 so that the second rod stopper 29 is attached to the upper side of the other side 16 of the repair material loading box 1 when the rod 18 is raised. In contact with the first rod stopper 19, ascending of the rod 18 is stopped to prevent separation.

The connecting member 30 is axially connected to the 1st rod 28 and the 2nd rod 18, The hooking member 30 is provided with the hook groove 31 which can hold the sovereignty of a crane.

In an embodiment of the present invention, the second connecting member 32 is vertically installed at the center of the first connecting member 30 that axially connects the first rod 25 and the second rod 18, and the second Hook groove 31 is formed in the connecting member 32 to enable the sovereignty of the crane.

Hereinafter, the operation of the local erosion portion repair apparatus of the furnace wall according to the present invention will be described in detail.

First, after loading the repair material 46 made of quicklime and magnesia in the repair material loading box 1 in an amount necessary for repair of the furnace wall local erosion portion, the hook groove 31 formed in the connecting member 30 of the first and second rods. The sovereignty of the crane to move the crane to move the repair device according to the present invention, the height-fixed stand (3) is located in the furnace (45) of the electric furnace 40, the height-adjustable stand (4) is the furnace (45) By being located on the upper surface of the open furnace roof 47 which is spaced apart from the predetermined distance from), the repair device is seated over the top angle of the furnace 45 of the furnace 40 and the upper surface of the furnace loop 47. At this time, the height of the height-adjustable stand (4) is adjusted so that the water holding box (1) can be kept horizontal without being inclined even if the height of each other is seated over different parts such as the furnace angle (45) and the loop (47) of the electric furnace. .

In an embodiment of the present invention, the pin 9 is inserted into the groove 8a of the upper portion formed in the leg portion 6 and the groove 7 of the protrusion 5.

When the repair device is seated, the chute 2 descends by its own weight along the chute guide 13 installed on one side 10 of the repair material stack 1, and then the water inlet 21 and the water stack of the suit 2 are loaded. The water retainer outlet 11 of (1) abuts at the same height. Then, the water retaining material 46 is drawn into the chute 2.

At this time, the lowered chute 2 is located below the upper part of the furnace wall of the slag 43 in which the slab 43 is thickly fused, so that the water retaining material 46 introduced into the chute 2 is lower than the lower part of the chute 2. It can be dropped into the local erosion portion 44 of the furnace wall through the water discharge hole 22.

When the repairing apparatus of the present invention is lifted after the dropping of the water retaining material 46 is completed, the first rod 25 is lifted until it is caught by the upper surface of the chute 2 by the rising stopper 27 formed at the lower end thereof, and then the first rod 25 is lifted. The rod 25 and the second rod 18 are raised continuously. At the same time, in order to raise the chute 2 lowered by its own weight to the initial height, the sovereign power of the crane is raised to the hook 24 formed on the upper surface of the chute 2 and the chute 2 is raised.

Next, the maintenance device of the present invention is moved to a flat bottom surface by a crane, and the height of the height-adjustable stand 4 is again adjusted to be settled horizontally on the flat bottom surface during storage.

In one embodiment of the present invention by inserting the pin (9) in the groove (7) of the lower groove (8b) and the projection (5) formed in the leg portion 6 to maintain the leveling device on a flat bottom surface Let's do it.

As described above, by using the repairing apparatus according to the present invention, it is possible to drop the repairing material at the exact position of the local eroding part by using only the repairing material of the amount sufficient to coat the furnace wall local erosion part, which is less than the amount used in the prior art. Repairing local erosion of the furnace wall using a positive repair material has the effect of improving the work efficiency.

In addition, by dropping and repairing the repair material to the local erosion portion of the furnace wall has the effect of extending the life of the furnace body.

Claims (1)

In the repair of the local erosion portion of the furnace wall which is placed in the furnace angle of the furnace and injects the repair material into the furnace furnace wall of the lower, It is in the form of a rectangular box, one side of the lower side is a height-fixed stand that is seated on the furnace angle, and the other side of the lower side is installed a height-adjustable stand that is seated on the upper surface of the roof, the maintenance material outlet on the lower side of the one side is installed Is formed, the chute guide is installed on the one side, on the other side facing the one side is loaded with a maintenance material rod guide is installed; A groove in which the chute guide is inserted is formed on one surface of the repair material stacking box so as to be lifted and lowered by its own weight, and a repair material inlet through which the repair material discharged from the repair material discharge port is formed is formed at an upper portion of the surface. A chute provided with a water repellent dropping hole formed at a lower portion of the other surface facing the one surface, and a groove through which a first rod penetrates at an upper surface thereof; And A first rod inserted into a groove of the upper surface of the chute to move up and down inside the chute, a second rod inserted into the rod guide to move up and down inside the rod guide, and shafts respectively formed in the first and second rods; Local erosion part repair apparatus of the furnace wall including a rod portion consisting of a hook groove formed in the connection member so as to be moved by the connection member and the crane connected.