Long-life pouring and building structure of refractory material of swing groove

Abstract

The utility model discloses a swinging groove refractory material long-life pouring and building structure which comprises a swinging groove shell, side plates fixedly connected to the two sides of the swinging groove shell, a permanent layer fixedly connected to the inner side of the swinging groove shell, a combining layer fixedly connected to the inner side of the permanent layer, and a working lining fixedly connected to the inner side of the combining layer. The inner side of the working lining is movably connected with a working layer, the top of the working layer is provided with a pouring groove, the bottom of the working layer is fixedly connected with a connecting base, the inner side of the connecting base is fixedly connected with a movable sleeve, the bottom end of the movable sleeve is movably connected with a screw rod, and the two sides of the working lining are fixedly connected with flow guide grooves. According to the pouring and building structure, through the arrangement of the screw opening, the screw rod, the movable sleeve, the connecting base and the working layer, the situation that the working lining, the permanent layer and the bonding layer are damaged by hanging slag residual iron when the pouring and building structure is cleaned and maintained is avoided, cleaning and maintenance are facilitated for workers by replacing the working layer, and therefore the service life of the pouring and building structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of iron-making blast furnaces, and particularly relates to a long-life casting structure of refractory materials for a swing trough. Background Technique

[0002] In the blast furnace iron-making process, there are two technological processes for collecting molten iron from the blast furnace tapping yard into the molten iron ladle (package): one is to collect the molten iron into the molten iron ladle (package) through a fixed supporting trough, and the other is to collect the molten iron into the molten iron ladle (package) through a movable swing chute. The number of fixed supporting troughs in the former process is limited, and it is only applicable to medium and small blast furnaces with a relatively small tapping volume per furnace. With the development of blast furnaces towards large-scale, automated, and green environmental protection and low-carbon directions, almost all newly built blast furnaces adopt swing chutes to collect molten iron.

[0003] The prior art patent document with the publication number CN219793022U provides a casting structure of refractory materials for a swing chute, including a chute steel shell, and further including a bauxite homogenized material layer, a composite bonding layer, and a working layer casting material arranged in sequence from bottom to top; the bauxite homogenized material layer is arranged at the inner bottom of the chute steel shell, and there are pores in the bonding area between the bauxite homogenized material layer and the inner side of the chute steel shell, and these pores play the roles of exhaust channels, heat insulation and expansion joints; the working layer casting material is arranged above the bauxite homogenized material layer, and the composite bonding layer is arranged between the working layer casting material and the bauxite homogenized material layer. The composite bonding layer is a layer structure formed by the working layer casting material infiltrating into the bauxite homogenized material layer by a certain thickness, and there are large particle spherical bauxite in the composite bonding layer, which can enhance the thermal shock resistance. The utility model overcomes the deficiencies existing in the current refractory material casting structure, greatly prolongs the service life of the swing chute, and improves the safety of the swing chute.

[0004] However, during the use of the existing long-life casting structure of refractory materials for the swing trough, the casting structure plays the role of receiving and transferring molten iron. Molten iron from the blast furnace flows into the casting structure from the iron trough, and the casting structure swings left and right through the control of the rotating mechanism to change the direction of molten iron outflow. The two ends of the swing chute of the casting structure take turns to discharge molten iron. However, after the blast furnace taps, when the high-temperature molten iron drops onto the casting structure, the high-temperature molten iron will impact the casting structure. The casting structure is prone to vertical cracks due to the impact of the high-temperature molten iron, and there will also be slag and residual iron hanging on the casting structure, which will cause loss to the casting structure during the cleaning process, resulting in the problem of short service life of the casting structure. Therefore, we propose a long-life casting structure of refractory materials for a swing trough. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a long-life pouring and laying structure for refractory materials of a swing trough to solve the problems raised in the above background technology, namely, when high-temperature molten iron drops onto the pouring and laying structure, the high-temperature molten iron will impact the pouring and laying structure, the pouring and laying structure is prone to vertical joints due to the impact of high-temperature molten iron, and the pouring and laying structure will have slag hanging and residual iron, which will cause loss to the pouring and laying structure during the cleaning process, resulting in a short service life of the pouring and laying structure.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is realized through the following technical solutions: A long-life pouring and laying structure for refractory materials of a swing trough, including a swing trough outer shell, both sides of the swing trough outer shell are fixedly connected with side plates, the inner side of the swing trough outer shell is fixedly connected with a permanent layer, the inner side of the permanent layer is fixedly connected with a bonding layer, the inner side of the bonding layer is fixedly connected with a working lining, the inner side of the working lining is movably connected with a working layer, a pouring groove is opened at the top of the working layer, a connecting seat is fixedly connected to the bottom of the working layer, a movable sleeve is fixedly connected to the inner side of the connecting seat, the bottom end of the movable sleeve is movably connected with a screw rod, diversion grooves are fixedly connected to both sides of the working lining, and a screw port is opened at the bottom of the swing trough outer shell.

[0009] Preferably, the diameter of the screw rod is adapted to the inner diameter of the screw port, and the screw rod is threadedly connected with the screw port.

[0010] Preferably, the swing trough outer shell is processed from steel material, and the outer surface of the swing trough outer shell is smooth.

[0011] Preferably, the inner width of the working lining is greater than the outer width of the working layer, and the working lining and the working layer are processed from the same material.

[0012] Preferably, the thickness of the working layer and the bonding layer does not exceed 150 MM.

[0013] Preferably, there are two side plates, the two side plates are of the same size, and the two side plates are symmetrically arranged.

[0014] (III) Beneficial effects

[0015] The utility model provides a long-life pouring and laying structure for refractory materials of a swing trough, which has the following beneficial effects:

[0016] (1) The long - life pouring and lining structure of this kind of swing groove refractory material, through the set screw mouth, screw rod, movable sleeve, connecting seat and working layer, when using the long - life pouring and lining structure of the swing groove refractory material, when the molten iron in the blast furnace flows into the pouring and lining structure from the iron runner, the molten iron in the blast furnace will impact the working layer. And during the process of the equipment driving the pouring and lining structure to transfer the molten iron, the molten iron in the blast furnace will also impact the working layer due to the moving direction. As time goes by, some molten iron in the blast furnace will form slag and residual iron. When the accumulated slag and residual iron are too much and need to be maintained and cleaned, the staff can rotate the screw rod clockwise. The screw rod will move through the movable sleeve and the screw mouth and move upward through the screw mouth. At this time, the screw rod pushes the working layer through the connecting seat, so as to separate the working layer from the working lining. Then, separate the screw rod from the movable sleeve, and the working layer can be replaced. And during installation, it can be installed well just by following the opposite way. Therefore, when cleaning and maintaining the pouring and lining structure, the slag and residual iron are prevented from damaging the working lining, permanent layer and bonding layer, and it is convenient for the staff to clean and maintain by replacing the working layer. Therefore, the service life of the pouring and lining structure is improved. Brief Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the cross - sectional view of the working lining of the present utility model;

[0019] Figure 3 is the partial structural schematic diagram of the working layer of the present utility model;

[0020] Figure 4 is the cross - sectional view of the swing groove housing of the present utility model.

[0021] In the figure: 1. Swing groove housing; 2. Side plate; 3. Working lining; 4. Pouring groove; 5. Diversion groove; 6. Screw mouth; 7. Screw rod; 8. Movable sleeve; 9. Connecting seat; 10. Working layer; 11. Permanent layer; 12. Bonding layer. Detailed Description of the Preferred Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4, the present utility model provides a technical solution: a long-life casting and lining structure of refractory material for a swing trough, including a swing trough outer shell 1, two side plates 2 fixedly connected to both sides of the swing trough outer shell 1, a permanent layer 11 fixedly connected to the inner side of the swing trough outer shell 1, a bonding layer 12 fixedly connected to the inner side of the permanent layer 11, a working lining 3 fixedly connected to the inner side of the bonding layer 12, a working layer 10 movably connected to the inner side of the working lining 3, a casting groove 4 opened at the top of the working layer 10, a connecting seat 9 fixedly connected to the bottom of the working layer 10, a movable sleeve 8 fixedly connected to the inner side of the connecting seat 9, a screw rod 7 movably connected to the bottom end of the movable sleeve 8, a diversion groove 5 fixedly connected to both sides of the working lining 3, and a screw port 6 opened at the bottom of the swing trough outer shell 1.

[0024] In this embodiment, specifically, the diameter of the screw rod 7 is adapted to the inner diameter of the screw port 6, and the screw rod 7 is threadedly connected to the screw port 6. By rotating the screw rod 7 clockwise, the screw rod 7 will move through the movable sleeve 8 and the screw port 6 and move upward through the screw port 6. At this time, the screw rod 7 pushes the working layer 10 through the connecting seat 9, thereby separating the working layer 10 from the working lining 3, and then separating the screw rod 7 from the movable sleeve 8.

[0025] In this embodiment, specifically, the swing trough outer shell 1 is processed from steel material, and the outer surface of the swing trough outer shell 1 is smooth. The swing trough outer shell 1 processed from steel material is more durable and not prone to damage.

[0026] In this embodiment, specifically, the inner width of the working lining 3 is greater than the outer width of the working layer 10, and the working lining 3 and the working layer 10 are processed from the same material, so that when the working layer 10 is damaged, the working lining 3 can also serve the purpose of collecting molten iron from the blast furnace.

[0027] In this embodiment, specifically, the thickness of the working layer 10 and the bonding layer 12 does not exceed 150 MM, which is beneficial to saving the cost of replacing the working layer 10.

[0028] In this embodiment, specifically, there are two side plates 2, the two side plates 2 are of the same size, and the two side plates 2 are symmetrically arranged. The side plates 2 prevent the molten iron from the blast furnace from overflowing during the transfer process.

[0029] Working principle: After the present utility model is installed, first check the installation and fixation as well as the safety protection of the present utility model. When using the swing groove refractory long-life pouring and lining structure, when the blast furnace molten iron flows from the iron runner into the pouring and lining structure, the blast furnace molten iron will impact the working layer 10. And during the process of the equipment driving the pouring and lining structure to transfer the molten iron, the blast furnace molten iron will also impact the working layer 10 due to the moving direction. And as the working time goes on, part of the blast furnace molten iron will form slag and residual iron. When the accumulated slag and residual iron are too much and need to be maintained and cleaned, the staff can rotate the screw 7 clockwise. The screw 7 will move through the movable sleeve 8 and the screw thread 6 and move upward through the screw thread 6. At this time, the screw 7 pushes the working layer 10 through the connecting seat 9, so as to separate the working layer 10 from the working lining 3. Then separate the screw 7 from the movable sleeve 8, and the working layer 10 can be replaced. And when installing, just install it in the opposite way to complete the use process of the present utility model. The present utility model has a simple structure and is safe and convenient to use.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

[0031] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. The drawings show the preferred embodiments of the present utility model, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present utility model in other related technical fields is equally within the scope of the patent protection of the present utility model.

Claims

1. A swing trough refractory material long-life casting structure, comprising a swing trough shell (1), characterized in that: The two sides of the swing trough shell (1) are fixedly connected with side plates (2); the inner side of the swing trough shell (1) is fixedly connected with a permanent layer (11); the inner side of the permanent layer (11) is fixedly connected with a bonding layer (12); the inner side of the bonding layer (12) is fixedly connected with a working lining (3); the inner side of the working lining (3) is movably connected with a working layer (10); a casting trough (4) is provided at the top of the working layer (10); a connecting seat (9) is fixedly connected at the bottom of the working layer (10); a movable sleeve (8) is fixedly connected at the inner side of the connecting seat (9); a screw rod (7) is movably connected at the bottom end of the movable sleeve (8); guide grooves (5) are fixedly connected at the two sides of the working lining (3); and a screw mouth (6) is provided at the bottom of the swing trough shell (1).

2. The swing trough refractory material long-life casting structure according to claim 1 is characterized in that: The diameter of the screw rod (7) is matched with the inner diameter of the screw mouth (6), and the screw rod (7) is threadedly connected with the screw mouth (6).

3. The swing trough refractory material long-life casting structure according to claim 1 is characterized in that: The swing trough shell (1) is made of steel material, and the outer surface of the swing trough shell (1) is smooth.

4. The swing trough refractory long-life casting structure according to claim 1 is characterized in that: The inner width of the working lining (3) is greater than the outer width of the working layer (10), and the working lining (3) and the working layer (10) are made of the same material.

5. The swing trough refractory long-life casting structure according to claim 1 is characterized in that: The thickness of the working layer (10) and the bonding layer (12) does not exceed 150 mm.

6. The swing trough refractory material long-life casting structure according to claim 1 is characterized in that: Two side panels (2) are provided, the two side panels (2) are of the same size, and the two side panels (2) are symmetrically arranged.

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