KR200180978Y1 - Guider of blast furnace tap hole opening bit - Google Patents

Abstract

The present invention relates to a guiding device of the blast furnace opening bit opening to guide the tapping bar of the opening machine to be accurately centered with the exit port when opening the exit port for discharging the melt in the furnace from the blast furnace to smoothly carry out the opening work. will be.

To this end, the present invention is a cylindrical support shaft fixed to the bottom surface and the fixing plate is fixed to the upper outer periphery, a swing head rotatably fixed to the upper end of the support shaft, the first arm fixed horizontally with the swing head And a horizontal movable cylinder connecting the fixed plate and the first arm to rotate the swing head, a second arm inclinedly fixed to the first arm, and parallel to the second arm. A third arm, a shanghai copper cylinder connecting the second arm and the third arm so that the third arm is foldable within a range of an angle, and fixed to an end of the third arm and at one end thereof with a guide funnel. It is comprised including the 4th arm provided with.

Accordingly, the present invention can smoothly guide the opening work of the tapping opening to increase tapping efficiency and produce high-quality pig iron and at the same time secure the safety of the worker.

Description

Guiding device for blast furnace opening bit {GUIDER OF BLAST FURNACE TAP HOLE OPENING BIT}

The present invention relates to a guiding device of the blast furnace opening bit opening to guide the tapping bar of the opening machine to be accurately centered with the exit port when opening the exit port for discharging the melt in the furnace from the blast furnace to smoothly carry out the opening work. will be.

In general, molten iron melted in blast furnace is discharged through tap hole, which is a passage for discharging it to the outside of the furnace. Excavation port is excavated using) and when the exit is completed, the exit port is closed by filling the outlet port with an indefinite refractory material (mud material) through a mud gun (MUD GUN) for the next melting.

However, the opening of the opening of the tapping opening is turned to the front side of the tapping opening, and then the taping bar attached to the taping opening is approached to the taping opening to carry out the opening work. As it protrudes toward the front, the tapping bar is not accurately centered, and thus the bit (BIT) provided at the tapping bar to perform the excavation opening excavation operation is frequently detached, thereby causing the problem of damaging the starting opening and its joint surface. .

In order to prevent this, the bit must be correctly centered at the exit port, but conventionally, there is no means for guiding the bit to be correctly centered, so that the main worker adjusts and centers the bit of the tapping bar according to the hand signal sent by the assistant at the entrance. There is a situation.

However, such a centering operation requires a very skilled worker, and even such a person cannot accurately perform the repeated centering operation several times, resulting in a delay in the work time, and a hand signal near the blast furnace exit that contains high heat. It also involves a safety issue (burning) of the sending assistant.

The present invention has been made in view of the above-described problems, and has been devised to solve this problem. The opening of the exit port is provided by guiding the opening bit to be centered with the center of the exit port correctly in the vicinity of the exit port during the blast furnace melting operation. The purpose is to provide a guiding device for the opening bit of the blast furnace opening that enables to smoothly guide the work to improve the starting efficiency and produce high-quality pig iron, and at the same time to ensure the safety of the workers.

1 is a perspective view showing the overall appearance of a guide device according to the present invention,

2 is a perspective view illustrating main parts of the guide funnel of the guide device according to the present invention in detail;

3 is a cross-sectional view showing an operating state of the guide device according to the present invention.

Explanation of symbols on the main parts of the drawings

2: exit port, 10: support shaft,

12: horizontal moving cylinder, 16: fixed plate,

18: swing head, 20,22,24,26: arm,

32: Shanghai East Cylinder, 34: Guide Funnel,

36: center hole, 38: support piece,

40: Adjustment bolt.

An object of the present invention described above is a cylindrical support shaft fixed to the bottom surface and the fixing plate is fixed to the upper outer periphery, a swing head rotatably fixed to the upper end of the support shaft, a first fixed horizontally with the swing head An arm, a horizontal moving cylinder connecting the fixed plate and the first arm to rotate the swing head, a second arm inclined to the first arm, and parallel to the second arm so as to be movable. A fixed third arm, a shanghai copper cylinder connecting the second arm and the third arm so that the third arm can be folded within a range of an angle, and fixed to an end of the third arm and guided at one end thereof It is achieved by including a fourth arm with a funnel.

Hereinafter, a preferred embodiment according to the present invention will be described in more detail based on the accompanying drawings.

1 is a perspective view showing the overall appearance of a guide device according to the present invention.

As shown, the rotatable swing head 18 is fixed to the upper end of the cylindrical support shaft 10.

In addition, a bar fixing plate 16 is fixed to the outer circumference of the upper end of the support shaft 10, the fixing plate 16 is spaced apart from the swing head 18 and is installed so as not to interfere with each other.

A fixing bracket 14a is formed at one front of the fixing plate 16 and a horizontal moving cylinder 12 is installed at the fixing bracket 14a.

A first arm 20 is fixed to an outer circumferential side of the swing head 18, and a fixing bracket 14b is formed on one side of the first arm 20.

A cylinder rod (not shown) of the horizontal moving cylinder 12 is connected to the fixing bracket 14b.

Therefore, the horizontal cylinder 12 has one end fixed to the fixing plate 16 and the other end is fixed to the first arm 20, when the horizontal cylinder 12 is operated the support shaft The swing head 18 and the first arm 20 are rotatable about 10.

At the open end of the first arm 20, the second arm 22 is fixed inclined.

The inclination angle formed by the first arm 20 and the second arm 22 is preferably about 20 to 30 degrees.

In addition, a support post 48a protrudes from the upper surface of the second arm 22, and one end of the shanghai copper cylinder 32 is fixed to the support post 48a.

In addition, the support piece 38 to which the adjustment bolt 40 is coupled is attached to the opposite surface on which the support post 48a protrudes from the lower surface of the second arm 22.

The adjusting bolt 40 is provided to be in close contact with the lower surface of the third arm 24 to be described later.

The third arm 24 has the same inclination angle as the second arm 22 and is fixed to the open end of the second arm 22 so as to be movable.

To this end, although the reference numerals are not written together, grooves are formed at the open end of the second arm 22, and protrusions corresponding to the grooves are formed at the fixed end of the third arm 22.

Accordingly, the third arm 24 is movable along the groove of the second arm 22 according to the rotational direction of the adjustment bolt 40 fastened to the support piece 38.

In addition, a similar support post 48b corresponding to the support post 48a protrudes from the upper surface of the third arm 24, and a cylinder rod (not shown) of the shandong copper cylinder 32 is connected.

Therefore, the third arm 24 is foldable by the shank copper cylinder 32 within the preferred angle, for example, in the range of 15 to 20 degrees with the second arm 22.

At this time, the projection of the third arm 24 is processed with the groove and the projection with a sufficient margin so as not to be separated from the groove of the second arm (22).

On the other hand, the fourth arm 26 to which the guide funnel 34 having the center hole 36 is attached is fixed to the open end of the third arm 24.

The fourth arm 26 is preferably fixed at an angle with respect to the bottom surface, such as approximately 10 degrees.

Although not shown in the drawings, the arms are inclined to be inclined and some of the arms are foldably installed so as not to interfere with the protective wall installed around the blast furnace exit.

Figure 2 illustrates in detail the guide funnel of the guide device according to the present invention, the guide funnel 34 is formed in a funnel shape having a larger diameter than the inlet side of the outlet side, the center hole 36 is formed at the center thereof And is supported by the fixed disk 42 and the center hole 36 is installed in communication with the through-hole 51 of the fixed disk 42.

Therefore, even if the opening bit is not centered with any part of the guide funnel 34, that is, the center hole 36, the opening bit contacting a part of the inner circumference of the guide funnel 34 naturally slides and the center hole ( 36).

3 is a cross-sectional view showing an operating state of the guide device according to the present invention.

As shown in FIG. 3, the opening bit 4 attached to the opening machine 3 has a slightly long rod-shaped member and thus has some up, down, left, and right flowability.

Therefore, as described above, even if the opening bit 4 is in contact with any portion of the inner circumference of the guide funnel 34, the centering operation of the center hole 36 can be performed without any difficulty.

When the hydraulic cylinder 5 attached to the opener 3 is operated to draw the molten molten iron from the blast furnace 1, the opening bit 4 is moved to the outlet port 2 while advancing.

At this time, the guide funnel 34 is positioned in front of the exit port 2 by the horizontal movable cylinder 12 provided on the support shaft 10 and the shank east cylinder 32 provided on each arm 22, 24. The center hole 36 is precisely centered with the center of the exit port 2 by being positioned and finely adjusted (automable).

Subsequently, the opening bit 4 entering is brought into contact with the inner circumference of the guide funnel 34 and guided to the center hole 36.

The guided opening bit 4 excavates the mud material which has closed the exit port 2 through the center hole 36 and the through hole 51 which are accurately centered, and the molten material melted in the blast furnace 1 is wired out. Will be transferred to.

As described in detail above, the guide device of the blast furnace opening bit opening bit according to the present invention does not need to receive a hand signal for the centering in the vicinity of the blast furnace when opening the opening of the exit port is guaranteed the safety of the operator, opening bit The centering can be done simply by the simple process, which maximizes the efficiency of starting work and produces high quality charter.

Claims (2)

A cylindrical support shaft 10 fixed to the bottom surface and having a fixing plate 16 fixed to the outer periphery thereof; A swing head 18 rotatably fixed to an upper end of the support shaft 10; A first arm 20 fixed horizontally to the swing head 18, A horizontal movable cylinder 12 connecting the fixed plate 16 and the first arm 20 to rotate the swing head 18; A second arm 22 inclinedly fixed to the first arm 20, A third arm 24 parallel to the second arm 22 and fixed to the movable arm; Shanghai copper cylinder 32 connecting the second arm 22 and the third arm 24 so that the third arm 24 can be folded within a predetermined angle range, And a fourth arm (26) fixed to an end of said third arm (24) and having a guide funnel (34) at one end thereof. The support piece 38 extending to the third arm 24 side is fixed to one lower surface of the second arm 22, according to claim 1, The guiding device of the blast furnace opening opening bit, characterized in that it comprises a control bolt 40 is fixed to the support piece 38 and in close contact with the bottom surface of the third arm (24).