Molten iron flow guide structure for branch runner of iron runner

Abstract

The utility model provides a molten iron diversion structure for an iron runner branch runner, which comprises a branch runner main body, a molten iron collecting area is arranged at the tail end of the branch runner main body, at least one molten iron diversion hole is arranged at the bottom of the molten iron collecting area, the center line of the molten iron diversion hole is perpendicular to the horizontal plane, and molten iron can flow to the molten iron collecting area along the branch runner main body. The molten iron flows out vertically and downwards through the molten iron flow guide hole; the device is reasonable in design structure and convenient to use, the channel head of the branch channel is blocked, and the molten iron flow guide hole for vertically and downwards guiding flow is formed in the tail of the branch channel, so that molten iron flows out vertically and downwards along the molten iron flow guide hole all the time when being guided out, on one hand, point positions falling on the swing chute can be consistent; the flushing control of different point positions of the swinging chute can be realized through different molten iron flow guide holes, the service life of the swinging chute below is prolonged, on the other hand, the problems of residual dripping and dripping at the tail end of the ditch head can be avoided, the overhaul frequency of the branch ditch head is reduced, and the overhaul cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of the tapping structure of the branch runner, and particularly relates to a molten iron diversion structure for the branch runner of the iron runner. Background Art

[0002] In the iron and steel industry, during the process of obtaining formed iron and steel, iron ore needs to be put into a blast furnace for smelting treatment to obtain molten iron. As Figure 3 shown, the molten iron flows from the blast furnace into the iron runner 5. The skimmer 7 on the iron runner 5 is used to separate the molten iron and the slag. The slag is discharged from the slag runner 6, and the molten iron continues to flow along the iron runner 5 into the branch runner 8, and finally is conveyed from the branch runner 8 to the swing chute below the head of the branch runner, and then is conveyed from the swing chute to the ladle or torpedo can, completing the entire conveying process of the molten iron.

[0003] The existing structure of the head of the branch runner is as Figures 4-5 shown. The tail of the head is a through structure. The molten iron flows from the position of the head of the branch runner into the swing chute below. Due to a certain height difference between the branch runner and the swing chute, and the position of the swing chute is fixed. In the early stage of tapping from the blast furnace, when the molten iron falls at a high flow rate, the molten iron will fall at the front end position of the swing chute due to greater inertia. When the speed of the molten iron gradually decreases, the molten iron will gradually fall at the rear end position of the swing chute, that is, due to the inconsistent speed of the molten iron, the points where the molten iron falls on the swing chute are different. This way of tapping at the head of the branch runner, on the one hand, due to the erosion of different positions of the swing chute, different degrees of damage will exist at different positions on the swing chute, affecting the service life of the swing chute. Even if a flow stabilizer (a prefabricated part resistant to erosion and corrosion) is set on the swing chute, the laying area of the flow stabilizer will increase due to the change of the erosion points, increasing the cost investment. On the other hand, since the molten iron flows down from the position of the head of the branch runner, the head position is constantly eroded by the molten iron, and there are constantly residual and dripping phenomena, resulting in frequent damage to the head part of the branch runner, and it is necessary to constantly renovate this position, which not only increases the renovation cost, but also causes the problem of production stoppage due to continuous renovation. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a molten iron diversion structure for the branch runner of the iron runner, which seals the head position of the branch runner and sets a vertically downward diversion molten iron diversion hole at the tail of the branch runner, so that the molten iron always flows vertically downward along the molten iron diversion hole when being exported. On the one hand, it can make the points where the molten iron falls on the swing chute consistent, and different points of the swing chute can be controlled for erosion through different molten iron diversion holes, extending the service life of the swing chute below. On the other hand, it can avoid the problems of residual and dripping at the end of the head, reduce the frequency of renovation of the head of the branch runner, and reduce the renovation cost.

[0005] The technical solution adopted by the present utility model is as follows: A molten iron diversion structure for a branch trench of a trough includes a branch trench main body. The end position of the branch trench main body has a molten iron collection area. The bottom of the molten iron collection area has at least one molten iron diversion hole. The center line of the molten iron diversion hole is perpendicular to the horizontal plane. Molten iron can flow along the branch trench main body to the molten iron collection area and flow vertically downward through the molten iron diversion hole.

[0006] A molten iron blocking block is fixed at the end position of the branch trench main body. The molten iron blocking block is used to prevent molten iron from flowing downward along the branch trench main body.

[0007] The cross-sectional shape of the molten iron blocking block is a semi-circular structure.

[0008] The upper plane of the molten iron collection area is lower than the bottom plane of the branch trench main body.

[0009] At least one seat brick is fixed at the bottom of the molten iron collection area. The molten iron diversion hole is opened at the central position of the seat brick.

[0010] The seat brick is formed by machine pressing or pre-casting.

[0011] The beneficial effects of the present utility model are as follows:

[0012] The present utility model has a reasonable design structure and is convenient to use. It blocks the head position of the branch trench and sets a vertically downward diversion molten iron diversion hole at the tail of the branch trench, so that the molten iron always flows vertically downward along the molten iron diversion hole when being exported. On the one hand, it can make the points where the molten iron falls on the swing chute consistent, and different points of the swing chute can be scoured and controlled through different molten iron diversion holes, extending the service life of the lower swing chute. On the other hand, it can avoid the problems of remaining and dripping at the end of the trench head, reduce the frequency of renovation of the branch trench head, and reduce the renovation cost. Description of the Drawings

[0013] Figure 1 is a perspective view of the present utility model;

[0014] Figure 2 is a cross-sectional view of the present utility model;

[0015] Figure 3 is a schematic diagram of the transportation of molten iron in the prior art;

[0016] Figure 4 is a partial perspective view of the branch trench in the prior art;

[0017] Figure 5 is a schematic diagram of the transportation of molten iron at the head position of the branch trench in the prior art.

[0018] Markings in the figure: 1. Main body of the branch trough; 2. Molten iron collection area; 3. Seat brick; 4. Molten iron diversion hole; 5. Molten iron trough; 6. Slag trough; 7. Skimmer; 8. Branch trough; 9. Swing chute; 10. Molten iron blocking block. Specific implementation mode

[0019] The following further elaborates on the specific implementation mode of the present utility model in conjunction with the accompanying drawings.

[0020] As shown in the figure, a molten iron diversion structure for a branch trough of a molten iron trough includes a main body 1 of the branch trough. At the end position of the main body 1 of the branch trough, there is a molten iron collection area 2. Specifically, a molten iron blocking block 10 is fixed at the end position of the main body 1 of the branch trough. The contact part between the molten iron blocking block 10 and the main body 1 of the branch trough is hermetically connected. The molten iron blocking block 10 is used to prevent molten iron from flowing downward along the main body 1 of the branch trough. Among them, the molten iron blocking block 10 can adopt a structure integrally cast with the main body 1 of the branch trough, or can also be made of prefabricated parts, mainly to block the outlet at the end of the traditional branch trough. The molten iron collection area 2 is used to make molten iron flow into this area for collection.

[0021] At least one molten iron diversion hole 4 is provided at the bottom of the molten iron collection area 2. The center line of the molten iron diversion hole 4 is perpendicular to the horizontal plane. Molten iron can flow from the main body 1 of the branch trough to the molten iron collection area 2 and flow vertically downward through the molten iron diversion hole 4. Specifically, at least one seat brick 3 is fixed at the bottom of the molten iron collection area 2, and the molten iron diversion hole 4 is opened at the central position of the seat brick 3. Among them, the seat brick 3 can be made of refractory bricks formed by machine pressing, or can also be precast in advance. Each seat brick 3 is provided with a molten iron diversion hole 4. The molten iron diversion holes 4 at the bottom of the molten iron collection area 2 can be provided with one or more. During use, molten iron flows out from one molten iron diversion hole 4, and different positions of the molten iron diversion holes 4 can be selected according to needs to achieve the diversion work.

[0022] The cross-sectional shape of the molten iron blocking block 10 is a semi-circular structure, or a molten iron blocking block 10 with a rectangular cross-section can also be used, and its purpose is to block molten iron.

[0023] The upper plane of the molten iron collection area 2 is lower than the bottom plane of the main body 1 of the branch trough, which can make molten iron flow into the molten iron collection area 2.

[0024] When this molten iron diversion structure for the iron hook branch trench is in use, during the process of molten iron flowing from the branch trench main body 1 to the lower swing chute 9, it first gathers in the molten iron gathering area 2 at the trench head position, and then flows downward through the molten iron diversion holes 4 below the molten iron gathering area 2. The downward flow of molten iron can scour a designated position on the swing chute 9, and one or more of the molten iron diversion holes 4 can be blocked according to requirements to keep the molten iron diversion holes 4 at the designated position unobstructed, facilitating targeted control and adjustment of the scouring point of the lower swing chute 9. At the same time, a scour-resistant flow stabilizer is set in a designated area on the swing chute 9, thereby improving the service life of the swing chute 9 on the basis of reducing costs. Moreover, since the method of setting seat bricks 3 at the trench head position is adopted to replace the traditional open structure, the problem of molten iron scouring the trench head position can be avoided, and the damage to the trench head caused by residual and dripping phenomena can also be avoided, reducing the frequency of renovation at the trench head position.

Claims

1. A molten iron diversion structure for a branch trench of a trough, characterized in that: It includes a runner main body. There is a molten iron collecting area at the end position of the runner main body. There is at least one molten iron diversion hole at the bottom of the molten iron collecting area. The center line of the molten iron diversion hole is perpendicular to the horizontal plane. Molten iron can flow along the runner main body to the molten iron collecting area and flow vertically downward through the molten iron diversion hole.

2. The molten iron diversion structure for the branch trench of the trough according to claim 1, characterized in that: A molten iron blocking block is fixed at the end position of the runner main body. The molten iron blocking block is used to prevent molten iron from flowing downward along the runner main body.

3. The molten iron diversion structure for the branch trough of the runner according to claim 2, characterized in that: The cross-sectional shape of the molten iron blocking block is a semi-circular structure.

4. A molten iron diversion structure for a branch trench of a trough, characterized in that: The upper plane of the molten iron collecting area is lower than the bottom plane of the runner main body.

5. A molten iron diversion structure for a branch trench of a trough, characterized in that: At least one seat brick is fixed at the bottom of the molten iron collecting area. The molten iron diversion hole is opened at the center position of the seat brick.

6. The molten iron diversion structure for the branch trough of the trough according to claim 5, characterized in that: The seat brick is formed by machine pressing or precast by pouring.

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