CN202246719U - Iron-smelting blast furnace and taphole frame thereof - Google Patents

Abstract

The utility model discloses a taphole frame, include the framework with outside blast furnace taphole looks adaptation, framework formula structure as an organic whole, the middle part of framework has the opening that supplies the iron slag to pass through, the peripheral part of framework has the curb plate that is connected with outside stove outer covering. In the use process, the frame body is of an integrated structure, and unstable assembly structures such as welding seams are not needed in the structure, so that the potential structural hazards such as welding seam cracking and the like generated under high-strength and high-temperature-difference operation environments are effectively avoided, the potential safety hazards such as sealing structure failure of the taphole frame and gas leakage and the like caused by welding seam cracking and the like are avoided, the structural strength of the taphole frame is obviously improved, and the structural sealing performance in the use process is correspondingly improved. The utility model also discloses an iron-making blast furnace of using above-mentioned iron notch frame, this iron-making blast furnace's iron notch frame part's structural strength is higher, and its leakproofness is better.

Description

Ironmaking blast furnace and its taphole frame

technical field

The utility model relates to the technical field of smelting equipment, in particular to an iron hole frame. The utility model also relates to an ironmaking blast furnace using the taphole frame.

Background technique

As a common smelting equipment, ironmaking blast furnace is widely used in all aspects of metal smelting and processing. As an important part of the ironmaking blast furnace, the taphole is one of the main process equipment for discharging slag iron in the ironmaking production process. The taphole is usually provided with a taphole frame matching the tapway to protect the refractory material and the taphole mud sleeve of the taphole. With the continuous improvement of production intensity, people have put forward higher requirements for the performance of the iron frame.

Please refer to FIG. 1 , which is a schematic diagram of an assembly structure of a taphole frame part of a typical ironmaking blast furnace in the prior art.

At present, the taphole frame part of the existing ironmaking blast furnace is usually welded with a protective plate 12 on the outside of the taphole frame 11, and the middle part of the taphole frame 11 and the protective plate 12 has an opening 13 for slag and iron transportation. After welding and fixing The iron mouth frame 11 and the protective plate 12 are fixed on the furnace shell 15 by bolts 14 .

However, although the taphole frame shown in Figure 1 can meet the basic needs of the ironmaking blast furnace, its structural strength is poor due to the welded assembly between the taphole frame 11 and the protective plate 12, and during the production process The alternation of cold and heat is more obvious before and after tapping, and coupled with the mechanical impact of the tapping machine and other related cooperative equipment, the weld between the iron hole frame 11 and the protection plate 12 is very easy to crack under the action of high-strength mechanical impact and thermal stress , resulting in the failure of the overall sealing structure of the iron mouth frame, resulting in secondary accidents such as gas leakage, seriously endangering the personal safety of operators, and adversely affecting the normal continuous production of ironmaking blast furnaces.

Therefore, how to improve the structural strength and sealing performance of the iron frame part is an important technical problem to be solved by those skilled in the art.

Utility model content

The purpose of the utility model is to provide an iron mouth frame, which has higher structural strength and better sealing performance. Another object of the present utility model is to provide an ironmaking blast furnace using the above-mentioned taphole frame.

In order to solve the above-mentioned technical problems, the utility model provides a taphole frame, which is used in ironmaking blast furnaces, including a frame body adapted to an external blast furnace taphole. The frame body has an integrated structure, and the frame body The middle part has an opening for slag and iron to pass through, and the outer peripheral part of the frame body has side plates connected with the outer furnace shell.

Preferably, the side plate has several through holes, and the frame body is fixed to the outer furnace shell through bolts passing through the through holes.

Preferably, the through hole is specifically a counterbore.

Preferably, several reinforcing ribs are provided on the front surface of the side plate.

Preferably, a metal pad is provided between the corresponding surfaces of the connection between the side plate and the outer furnace shell.

Preferably, a reinforcement plate is provided at the joint between the side plate and the outer furnace shell.

The utility model also provides an iron-making blast furnace, which includes a furnace shell, the furnace shell has a taphole, and the taphole is provided with a taphole frame, and the taphole frame is specifically any one of the above-mentioned Iron frame.

Compared with the above-mentioned background technology, the taphole frame provided by the utility model is used in ironmaking blast furnaces, and includes a frame body adapted to an external blast furnace taphole. The frame body is an integrated structure, and the middle part of the frame body There is an opening for slag iron to pass through, and the outer peripheral part of the frame body has a side plate connected with the outer furnace shell. During use, since the frame body has an integrated structure, there is no need for unstable assembly structures such as welds inside the structure, thereby effectively avoiding structural hazards such as weld cracking in high-strength, high-temperature difference operating environments, thereby avoiding It eliminates safety hazards such as the failure of the sealing structure of the iron mouth frame and gas leakage caused by reasons such as weld cracking, significantly improves the structural strength of the iron mouth frame, and improves the structural sealing performance during use.

In another preferred solution of the present invention, the side plate has several through holes, and the frame body is fixed to the outer furnace shell through bolts passing through the through holes. The use of this bolt assembly method can further improve the assembly strength between the frame body and the furnace shell, and the bolts are easy to disassemble, so that it is convenient to disassemble the iron mouth frame part for necessary maintenance or replacement when necessary.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the assembly structure of the taphole frame part of a typical ironmaking blast furnace in the prior art;

Fig. 2 is a schematic diagram of the assembly structure of the taphole frame part of the ironmaking blast furnace provided by a specific embodiment of the present invention;

Fig. 3 is a schematic diagram of the front structure of the frame part in Fig. 2 .

Detailed ways

The core of the utility model is to provide a taphole frame, which has high structural strength and good sealing performance; at the same time, it provides an ironmaking blast furnace using the taphole frame.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Figure 2 and Figure 3, Figure 2 is a schematic diagram of the assembly structure of the iron hole frame part of the ironmaking blast furnace provided by a specific embodiment of the utility model; Figure 3 is a schematic diagram of the front structure of the frame part in Figure 2.

In a specific embodiment, the taphole frame provided by the utility model is used in an ironmaking blast furnace, and includes a frame body 21 adapted to an external blast furnace taphole. The frame body 21 has an integrated structure, and the middle part of the frame body 21 There is an opening 211 through which iron slag passes, and the outer peripheral portion of the frame body 21 has a side plate 22 connected to the outer furnace shell 31 . During use, since the frame body 21 has an integrated structure, there is no need for unstable assembly structures such as welds inside the structure, thereby effectively avoiding structural hazards such as weld cracks in high-strength, high-temperature difference operating environments, thereby avoiding The failure of the sealing structure of the iron mouth frame and the safety hazards such as gas leakage caused by reasons such as weld cracking have significantly improved the structural strength of the iron mouth frame and correspondingly improved the structural sealing during use.

Specifically, the side plate 22 has several through holes 23 , and the frame body 21 is fixed to the outer furnace shell 31 through the bolts 231 passing through the through holes 23 . Adopting this bolt assembly method can further improve the assembly strength between the frame body 21 and the furnace shell 31 , and the bolts 231 are easy to disassemble, which facilitates the disassembly of the spout frame for necessary maintenance or replacement when necessary.

More specifically, the through hole 23 is embodied as a counterbore. The through hole 23 with this kind of countersunk head structure can effectively reduce the space required for the assembly structure between it and the bolt 231, so that the influence of the assembly relationship on the main working structure of the iron frame part is correspondingly reduced. At the same time, with the countersunk head structure The through hole 23 can make the assembly relationship between it and the bolt 231 more sufficient and tight, and make the overall assembly structure of the iron hole frame part more stable and reliable.

Of course, it is only a preferred solution that the above-mentioned through hole 23 is a countersunk hole, and the through hole 23 is not limited to the countersunk hole described in the above embodiment, as long as it can meet the actual use requirements of the iron mouth frame.

Further, several reinforcing ribs 24 are provided on the front surface of the side plate 22 . The ribs 24 can further improve the structural strength of the frame body 21, making it more able to withstand impact and extrusion, and making the overall mechanical strength of the iron hole frame correspondingly improved.

In addition, a metal pad 25 is provided between the corresponding surfaces of the connection between the side plate 22 and the outer furnace shell 31 . The metal pad 25 can further improve the assembly strength when the bolts are assembled between the side plate 22 and the furnace shell 31, and avoid the abrasion caused by the assembly structure between the mating surfaces of the main parts, thereby further prolonging the service life of the iron mouth frame.

On the other hand, a reinforcing plate 26 is provided at the joint between the side plate 22 and the outer furnace shell 31 . The reinforcing plate 26 can further increase the fastening force of the bolted connection between the side plate 22 and the furnace shell 31, and increase its assembly strength accordingly, thereby ensuring that the overall assembly structure of the iron mouth frame part is more stable and reliable.

In a specific embodiment, the iron-making blast furnace provided by the utility model includes a furnace shell, the furnace shell has a taphole, and the taphole is provided with a taphole frame, and the taphole frame is specifically shown in Figure 2 Iron mouth frame shown in. The iron hole frame part of the ironmaking blast furnace has high structural strength and good sealing performance.

In summary, the taphole frame provided in the utility model is used in ironmaking blast furnaces, and includes a frame body that is compatible with an external blast furnace taphole. The frame body has an integrated structure, and the middle part of the frame body has a The opening for the passage of slag iron, the outer peripheral part of the frame body has a side plate connected with the outer furnace shell. During use, since the frame body has an integrated structure, there is no need for unstable assembly structures such as welds inside the structure, thereby effectively avoiding structural hazards such as weld cracking in high-strength, high-temperature difference operating environments, thereby avoiding It eliminates safety hazards such as failure of the sealing structure of the iron mouth frame and gas leakage caused by reasons such as weld cracking, significantly improves the structural strength of the iron mouth frame, and correspondingly improves the structural sealing performance during use.

In addition, the iron-making blast furnace provided by the utility model using the above-mentioned taphole frame has higher structural strength and better sealing performance of the taphole frame part of the iron-making blast furnace.

The iron mouth frame provided by the utility model and the ironmaking blast furnace using the iron mouth frame have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (7)

1. A tap hole frame, which is used for ironmaking blast furnace, is characterized in that: it comprises a frame body adapted to the taphole of the external blast furnace, the frame body is of an integrated structure, and the middle part of the frame body has a slag supply An opening through which iron passes, and the outer peripheral portion of the frame body has a side plate connected to the outer furnace shell. 2 . The iron hole frame according to claim 1 , wherein the side plate has several through holes, and the frame body is fixed to the outer furnace shell through bolts passing through the through holes. 3 . 3. The iron mouth frame according to claim 2, characterized in that: the through hole is specifically a countersunk hole. 4. The iron mouth frame according to claim 3, characterized in that: several reinforcing ribs are arranged on the front surface of the side plate. 5. The spout frame according to any one of claims 1 to 4, characterized in that: a metal pad is provided between the corresponding surfaces of the connection between the side plate and the outer furnace shell. 6. The spout frame as claimed in claim 5, characterized in that: a reinforcement plate is provided at the joint between the side plate and the outer furnace shell. 7. An ironmaking blast furnace, comprising a furnace shell, the furnace shell has a taphole, and the taphole is provided with a taphole frame, characterized in that: the taphole frame is specifically as claimed in claims 1 to 6 Iron mouth frame described in any one.

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