Emergency iron notch blocking device for blast furnace

Abstract

The utility model discloses an emergency iron notch blocking device for a blast furnace, and relates to the technical field of blast furnace production equipment in the metallurgical industry. The drill rod comprises a drill rod body with threads at the tail, a conical end is arranged at the head of the drill rod body, and deformed steel bars are arranged between the drill rod body and the end. The deformed steel bar is sleeved with a round steel pipe, the end, close to the end, of the round steel pipe is conical and fixed to the deformed steel bar in a welded mode, and a pouring material layer is arranged in a gap between the round steel pipe and the deformed steel bar. The blast furnace taphole emergency plugging device can effectively perform emergency plugging on a blast furnace taphole, thereby solving the problems that the surface of a gun cap and a mud sleeve are easy to scour and erode by high-temperature slag iron and are damaged, the mud leakage problem is caused, even the taphole cannot be plugged, or mud gun equipment is burnt and molten iron overflows; the continuous production operation of blast furnace ironmaking is directly influenced; and the potential safety hazard is great.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace production equipment in the metallurgical industry, in particular to an emergency iron hole blocking device for a blast furnace. Background Art

[0002] The hydraulic mud gun machine is a special device for blocking the iron mouth of the blast furnace and is one of the important equipment in the ironmaking plant. When in use, the hydraulic mud gun machine quickly and accurately presses the gun mud into the molten iron discharge channel of the blast furnace with a certain pressure and hardens it at high temperature to block the flow of molten iron, so that the blast furnace can quickly enter the next cycle of operation.

[0003] The gun head of the hydraulic mud gun machine is equipped with a gun cap. When plugging the mouth, the gun cap directly fits with the iron mouth mud sleeve to form a seal to ensure that the iron mouth is blocked and mud does not leak. However, the gun cap surface and mud sleeve are easily eroded by high-temperature slag iron, causing damage, causing mud leakage and even failure to plug the iron mouth, or burning the mud gun equipment, causing molten iron overflow accidents, directly affecting the continuous production operation of blast furnace ironmaking and posing great safety hazards. Therefore, it is urgent to design a blast furnace iron mouth emergency plugging device to reverse this passive situation. Summary of the invention

[0004] The utility model provides a blast furnace emergency iron mouth blocking device, which can effectively perform emergency blocking on the blast furnace iron mouth, thereby solving the above-mentioned problem that the surface of the blasting cap and the mud sleeve are easily eroded by high-temperature slag iron, resulting in damage, causing mud leakage and even the failure to block the iron mouth, or burning mud gun equipment, causing molten iron overflow accidents, directly affecting the continuous production operation of blast furnace ironmaking and posing great safety hazards.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] It comprises a drill rod with a threaded tail, a conical end cap being arranged at the head of the drill rod, and threaded steel being arranged between the drill rod and the end cap; a round steel pipe being arranged outside the threaded steel pipe, an end of the round steel pipe close to the end cap being conical and being fixed to the threaded steel pipe by welding, and a casting material layer being arranged in the gap between the round steel pipe and the threaded steel pipe.

[0007] In the above technical solution, a more specific technical solution may also be: the length of the round steel pipe is one quarter of the length of the threaded steel.

[0008] Furthermore, the round steel pipe is located at one third of the threaded steel bar.

[0009] Furthermore, the drill rod and the threaded steel bar are fixed by welding.

[0010] Furthermore, the end cap and the threaded steel bar are fixed by welding.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0012] 1. The utility model is light and simple, and can effectively perform emergency plugging on the iron mouth of a blast furnace, thereby solving the problem that the surface of the blasting cap and the mud sleeve are easily eroded by high-temperature slag iron, causing damage, mud leakage, and even failure to plug the iron mouth, or burning mud gun equipment, causing molten iron overflow accidents, directly affecting the continuous production operation of blast furnace ironmaking and posing great safety hazards.

[0013] 2. The utility model welds the drill rod to the threaded steel bar, and finally puts on a round steel pipe for welding and fixing and casting into a whole. The thread spiral has a large contact area, which avoids relative displacement caused by force, thereby improving the overall strength of the utility model. When the utility model is driven into the iron mouth channel, it is sintered into a whole with the iron mouth through the high-temperature sintering effect of the iron mouth, thereby playing a role in sealing the iron mouth.

[0014] 3. The utility model uses a threaded casting method, relies on the central support of the threaded steel, and drives the casting material into the iron mouth channel through the axial friction force of the threaded contact surface.

[0015] 4. When installing and replacing the utility model, the drill pipe can be quickly disassembled and assembled according to the normal drill pipe installation process, which meets the production continuity requirements and fully meets the design expectations.

[0016] 5. The utility model has a simple structure and is easy to install. It can be installed manually with one hand, and its assembly and disassembly is simple and convenient. It is safe and reliable, has low cost, is easy to maintain, and has good operating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0019] like Figure 1 The device for emergency plugging of iron holes in a blast furnace shown in the figure comprises a drill rod 1 with a thread at the tail, a conical end 2 is provided at the head of the drill rod 1, and a threaded steel bar 3 is provided between the drill rod 1 and the end 2; a round steel pipe 4 is provided outside the threaded steel bar 3, and the end of the round steel pipe 4 close to the end 2 is conical and fixed on the threaded steel bar 3 by welding, and a casting material layer 5 is provided in the gap between the round steel pipe 4 and the threaded steel bar 3. It can be seen that the drill rod and the threaded steel bar are welded, and finally the round steel pipe is welded, fixed and cast into a whole, and the contact area of ​​the thread spiral is large, which avoids relative displacement caused by force and improves its overall strength.

[0020] The length of the round steel pipe 4 is one quarter of the length of the threaded steel 3. This arrangement ensures that the effective length of the utility model can be directly driven into the iron mouth channel by the impact piston vibration of the hydraulic opening machine, and is sintered into a whole with the iron mouth after high-temperature sintering.

[0021] Measured from the end 2, the round steel pipe 4 is located at one-third of the threaded steel 3. Such an arrangement can ensure that the utility model is completely introduced into the iron mouth channel and the opening operation stroke is within the working range.

[0022] The drill pipe 1 and the threaded steel bar 3 are fixed by welding.

[0023] The end cap 2 and the threaded steel bar 3 are fixed by welding.

[0024] The specific operation method of using the utility model to perform emergency plugging of the blast furnace iron mouth is as follows:

[0025] First, the threaded connection at the tail of the drill rod 1 of the utility model is fixed on the rock drill, and the end 2 of the utility model is aligned with the blast furnace iron mouth by using the hydraulic opening machine rotating mechanism, and the utility model is directly driven into the blast furnace iron mouth channel by the hydraulic motor and the impact piston vibration. After the high-temperature sintering of the blast furnace iron mouth, it is burned into a whole with the blast furnace iron mouth, plays the role of sealing the blast furnace iron mouth, thereby preventing the flow of molten iron.

[0026] Among them, the hydraulic opening machine used can be used at any time to perform emergency plugging of the blast furnace iron mouth, so the cost can be reduced to a minimum, and the operation is simple, maintenance is easy, and implementation is convenient.

[0027] At the same time, during the continuous production operation of blast furnace ironmaking, if the mud gun cap is burned or the mud sleeve is damaged, resulting in the mouth being unable to be blocked, the utility model can be quickly installed on the hydraulic opening machine to perform emergency blocking of the blast furnace iron mouth and eliminate the safety hazard of molten iron overflow.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A blast furnace emergency iron hole blocking device, characterized in that: It comprises a drill rod with a threaded tail, the head of the drill rod is provided with a conical end head, and threaded steel is provided between the drill rod and the end head; a round steel pipe is arranged outside the threaded steel pipe, the end of the round steel pipe close to the end head is conical and is fixed to the threaded steel pipe by welding, and a casting material layer is provided in the gap between the round steel pipe and the threaded steel pipe.

2. The blast furnace emergency iron hole blocking device according to claim 1, characterized in that: The length of the round steel pipe is one quarter of the length of the threaded steel bar.

3. The blast furnace emergency iron hole blocking device according to claim 1 or 2, characterized in that: The round steel pipe is located at one third of the threaded steel bar.

4. The blast furnace emergency iron hole blocking device according to claim 3 is characterized in that: The drill rod and the threaded steel bar are fixed by welding.

5. The blast furnace emergency iron hole blocking device according to claim 4, characterized in that: The end cap and the threaded steel bar are fixed by welding.

Images