A pouring mold for a blast furnace tapping main channel

Abstract

The utility model relates to the field of blast furnace ironmaking, and the utility model aims at providing a pouring mold for blast furnace iron tapping main ditch, solves the problem of difficult disassembly of the main ditch mold, the inner lining shell includes first side plate and second side plate, and the cavity is located between the first side plate and the second side plate, the loose and tight mechanism includes first screw rod, second screw rod and rotation setting rotator, the first screw rod and the second screw rod are respectively connected with the rotator both ends thread, the first screw rod sets up on the first side plate, the second screw rod sets up on the second side plate, and the first side plate and the second side plate are opened when pouring, and the first side plate and the second side plate are folded when the inner lining shell is taken out after pouring is completed, so that the first side plate and the second side plate are separated from the pouring object outside, the inner lining shell is easily taken out, and therefore the problem of difficult disassembly of the main ditch mold is solved.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace ironmaking, and in particular to a mold for casting the main tapping channel of a blast furnace. Background Technology

[0002] The working principle and structure of the blast furnace tapping main channel: The blast furnace tapping main channel is a crucial component of the blast furnace ironmaking system. It is the first and most important channel through which molten iron flows out of the blast furnace. Located below the blast furnace taphole, it is a refractory-lined channel through which the high-temperature molten material (a mixture of molten iron and slag) gushing from the taphole first flows. It receives molten material flowing from the blast furnace taphole at temperatures as high as 1450℃-1550℃, while simultaneously withstanding the enormous impact of the molten iron and molten material, as well as a certain weight. The channel's structure is typically a long, narrow trough with a certain slope (to facilitate molten iron flow). Its cross-section is generally a trapezoidal structure, wider at the top and narrower at the bottom. The core of the main channel is the refractory lining cast within the structural trough, which directly withstands the high temperature of the molten material, chemical erosion (molten iron, slag, alkali metals, etc.), mechanical scouring, and thermal shock. The refractory lining consists of a working layer, a permanent layer, and an insulation layer; the outer layer is supported by a steel structure shell. Because the refractory material in the working layer is severely corroded each time iron is tapped, especially in areas with high iron flow velocity and impact force (directly below the taphole) and in the slag-iron separation area, it is necessary to periodically perform intermediate or major repairs on the refractory material in the working layer of the main trough, depending on the corrosion status of the refractory material.

[0003] Common methods for repairing the blast furnace tapping main channel include spraying, patching, and refractory casting. Replacing the lining of the blast furnace main channel requires meticulous planning and a quickly executable maintenance procedure. Simultaneously, the stable operation of the blast furnace tapping main channel and its rapid return to service after repair are crucial for ensuring safe iron removal, continuous production, and efficient operation of the blast furnace. Therefore, the structural stability of the blast furnace main channel and quality control during the repair process are paramount. Understanding the vital role of the blast furnace tapping main channel, and to ensure the quality of its repair and rapid return to service, this patent explores the main channel repair mold based on the characteristics of on-site construction. Utility Model Content

[0004] The purpose of this invention is to provide a casting mold for the main tapping groove of a blast furnace, which solves the problem of difficult disassembly of the main groove mold.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a casting mold for the main tapping groove of a blast furnace, including an inner lining shell.

[0007] The inner liner shell has a cavity, and the inner liner shell includes a first side plate and a second side plate, with the cavity located between the first side plate and the second side plate;

[0008] The cavity is provided with a tensioning mechanism, which includes a first lead screw, a second lead screw, and a rotatable rotating body. The first lead screw and the second lead screw are respectively threaded to both ends of the rotating body. The first lead screw is disposed on the first side plate, and the second lead screw is disposed on the second side plate. The threads on the first lead screw and the second lead screw are opposite in direction. The tensioning mechanism can open or close the first side plate and the second side plate.

[0009] Optionally, the cavity is provided with a support plate, the two ends of which abut against the first side plate and the second side plate respectively, and the support plate is vertically arranged.

[0010] Furthermore, the support plate is provided with a first clamping plate and a second clamping plate in sections on both sides. The first clamping plate and the second clamping plate together clamp the support plate. The first clamping plate extends to the side and bottom of the cavity, and the second clamping plate extends to the side and bottom of the cavity.

[0011] Furthermore, the support plate is provided with a lifting block, and the lifting block is provided with a lifting hole.

[0012] Optionally, the first side plate and the second side plate are provided with lifting blocks, the lifting blocks are provided with lifting holes, and the lifting blocks are located inside the cavity.

[0013] Optionally, the bottom surface of the inner liner shell is curved.

[0014] Optionally, the tensioning mechanism further includes a first base and a second base, the first base being disposed on the first side plate, the second base being disposed on the second side plate, the first lead screw being disposed on the first base, and the second lead screw being disposed on the second base.

[0015] Furthermore, the tensioning mechanism also includes a first rotating wheel and a second rotating wheel, the first rotating wheel being rotatably mounted on the first base, the second rotating wheel being rotatably mounted on the second base, the first lead screw being connected to the first rotating wheel, and the second lead screw being connected to the second rotating wheel.

[0016] Optionally, the inner liner shell is provided with a cover plate for covering the opening end of the cavity, and the cover plate is provided with a reinforcing plate.

[0017] Furthermore, the reinforcing plate is provided with lifting rings.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] This utility model discloses a casting mold for the main tapping groove of a blast furnace. Because the threads on the first and second lead screws are in opposite directions, and the first and second lead screws are respectively threaded to both ends of the rotating body, the first and second side plates can be opened or closed when the rotating body is rotated. During casting, the first and second side plates need to be opened, and after casting is completed, the first and second side plates need to be closed when the inner lining shell needs to be removed. In this way, the first and second side plates are easily separated from the outer casting material, and the inner lining shell is also easy to remove. Therefore, the problem of difficult disassembly of the main groove mold is solved. Attached Figure Description

[0020] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0021] Figure 1 This is a perspective view of a casting mold for the main tapping trench of a blast furnace according to a preferred embodiment of the present invention;

[0022] Figure 2 yes Figure 1 The enlarged view of part A is shown below;

[0023] Figure 3 This is a three-dimensional view of the tensioning mechanism;

[0024] Figure 4 This is an enlarged view of the support plate;

[0025] Figure 5 yes Figure 1 The figure shows a perspective view of the cover plate covering the inner liner shell.

[0026] The reference numerals in the attached figures are explained as follows:

[0027] 1. Inner liner shell; 2. Tightening mechanism; 3. Cover plate; 4. Reinforcing plate; 10. Cavity; 11. First side plate; 12. Second side plate; 13. Rotary hole; 14. Support plate; 15. First clamping plate; 16. Second clamping plate; 17. Lifting block; 18. Lifting hole; 21. First lead screw; 22. Second lead screw; 23. Rotating body; 25. First base; 26. Second base; 27. First rotating wheel; 28. Second rotating wheel; 40. Lifting ring; 141. Lifting block; 142. Lifting hole; 251. First support block; 252. Second support block; 253. First insert rod; 261. Third support block; 262. Fourth support block; 263. Second insert rod. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figure 1 and Figure 2 and Figure 3 As shown, a casting mold for the main trough of a blast furnace includes an inner lining shell 1. The outer side of the inner lining shell 1 is used for casting refractory material, so that the main trough castable is formed between the main trough structure and the casting mold according to technical requirements.

[0032] The inner liner 1 has a cavity 10. The inner liner 1 includes a first side plate 11 and a second side plate 12. The cavity 10 is located between the first side plate 11 and the second side plate 12, and the casting material will not enter the cavity 10.

[0033] A tensioning mechanism 2 is provided inside the cavity 10. The tensioning mechanism 2 includes a first lead screw 21, a second lead screw 22, and a rotating body 23. The first lead screw 21 and the second lead screw 22 are respectively threaded to both ends of the rotating body 23. The first lead screw 21 is provided on the first side plate 11, and the second lead screw 22 is provided on the second side plate 12. The first lead screw 21 and the second lead screw 22 are arranged opposite to each other, and the thread directions on the first lead screw 21 and the second lead screw 22 are opposite. The tensioning mechanism 2 can open or close the first side plate 11 and the second side plate 12.

[0034] At the start of pouring, rotate the rotating body 23 so that the first lead screw 21 supports the first side plate 11 outward and the second lead screw 22 supports the second side plate 12 outward, so that the first lead screw 21 and the second lead screw 22 move away from each other, and the first side plate 11 and the second side plate 12 are spread apart. After pouring is completed and the product is formed, the inner liner shell 1 needs to be removed. At this time, rotate the rotating body 23 in the opposite direction so that the first lead screw 21 and the second lead screw 22 move closer to each other, so that the first lead screw 21 pulls the first side plate 11 inward and the second lead screw 22 pulls the second side plate 12 inward. The first side plate 11 and the second side plate 12 move closer to each other. At this time, the first side plate 11 and the second side plate 12 will deform and detach from the outer pouring material, so that the inner liner shell 1 can be easily removed.

[0035] A support plate 14 is provided inside the cavity 10. The two ends of the support plate 14 abut against the first side plate 11 and the second side plate 12 respectively. The support plate 14 is set vertically. When the pouring begins, the support plate 14 must be set to prevent the pouring material from squeezing and deforming the first side plate 11 and the second side plate 12 inward. When the inner liner shell 1 needs to be removed, the support plate 14 must be removed first.

[0036] The support plate 14 is provided with a first clamping plate 15 and a second clamping plate 16 in sections on both sides of the plate surface. The first clamping plate 15 and the second clamping plate 16 together clamp the support plate 14. The first clamping plate 15 extends to the side and bottom of the cavity 10, and the second clamping plate 16 extends to the side and bottom of the cavity 10. When the first side plate 11 and the second side plate 12 are squeezed, the first clamping plate 15 and the second clamping plate 16 have a limiting effect on the support plate 14, so the support plate 14 will not shift. The support plate 14 can always support the two side walls of the inner shell 1.

[0037] Lifting blocks 17 are provided on the first side plate 11 and the second side plate 12. Lifting holes 18 are provided on the lifting blocks 17. The lifting blocks 17 are located inside the cavity 10. When it is necessary to remove the inner liner shell 1, the worker drags the lifting blocks 17 or uses a rope to thread through the lifting holes 18 to lift the lifting blocks 17, that is, to lift the first side plate 11 and the second side plate 12 at the same time.

[0038] The bottom surface of the inner liner shell 1 is curved, and the curved surface lacks angles, so the inner liner shell 1 is not easy to get stuck in the cast-in-place, which is conducive to the separation of the inner liner shell 1 from the cast-in-place.

[0039] The tensioning mechanism 2 also includes a first base 25 and a second base 26. The first base 25 is disposed on the first side plate 11, and the second base 26 is disposed on the second side plate 12. The first lead screw 21 is disposed on the first base 25, and the second lead screw 22 is disposed on the second base 26. In this way, the first base 25 can increase the force-bearing area of ​​the first side plate 11, and the second base 26 can increase the force-bearing area of ​​the second side plate 12, so that the force on the first side plate 11 and the second side plate 12 is more even.

[0040] The tensioning mechanism 2 also includes a first rotating wheel 27 and a second rotating wheel 28. The first rotating wheel 27 is rotatably mounted on the first base 25, and the second rotating wheel 28 is rotatably mounted on the second base 26. The first lead screw 21 is connected to the first rotating wheel 27, and the second lead screw 22 is connected to the second rotating wheel 28. When the inner liner shell 1 is removed, the rotating body 23 is rotated. The first lead screw 21 pulls the first rotating wheel 27, and the second lead screw 22 pulls the second rotating wheel 28. When the first side plate 11 and the second side plate 12 are closed, the first side plate 11 and the second side plate 12 tilt from bottom to top with an increasingly larger angle. That is, the distance between the upper ends of the first side plate 11 and the second side plate 12 is less than the distance between the lower ends. The first rotating wheel 27 and the second rotating wheel 28 are not affected by the tilt.

[0041] The first base 25 includes a first support block 251, a second support block 252 and a first insertion rod 253. The two ends of the first insertion rod 253 pass through the first support block 251 and the second support block 252 respectively, and the first rotating wheel 27 is rotatably mounted on the first insertion rod 253.

[0042] The second base 26 includes a third support block 261, a fourth support block 262, and a second insertion rod 263. The two ends of the second insertion rod 263 pass through the third support block 261 and the fourth support block 262 respectively, and the second rotating wheel 28 is rotatably mounted on the second insertion rod 263.

[0043] In this example, the rotating body 23 is a hollow cube. The rotating body 23 is provided with a rotating hole 13, which is used to fit a rotating rod (not shown in the figure). The worker rotates the rotating rod to make the rotating body 23 rotate, which can save effort. The first lead screw 21 and the second lead screw 22 try to avoid the rotating hole 13, thereby avoiding the rotating rod inserted into the rotating hole 13.

[0044] like Figure 4 As shown, a lifting block 141 is provided on the support plate 14. The lifting block 141 is convenient for workers to grab. The lifting block 141 is provided with a lifting hole 142. A rope can be put into the lifting hole 142 to lift the support plate 14.

[0045] like Figure 1 and Figure 5 As shown, a cover plate 3 is provided on the inner shell 1. The cover plate 3 overlaps the first side plate 11 and the second side plate 12. The cover plate 3 is used to cover the opening end of the cavity 10. Before pouring, the cover plate 3 is used to cover the opening end of the cavity 10 to prevent the poured material from entering the cavity 10. The cover plate 3 can also prevent the inner shell 1 from deforming. When the inner shell 1 needs to be removed, the cover plate 3 is removed first to separate the cover plate 3 from the inner shell 1. A reinforcing plate 4 is provided on the cover plate 3. The reinforcing plate 4 is arranged longitudinally and transversely.

[0046] The reinforcing plate 4 is equipped with a lifting ring 40, which is used to lift the cover plate 3, making it easy to separate the cover plate 3 from the inner liner shell 1.

[0047] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A casting mold for the main tapping channel of a blast furnace, comprising an inner lining shell (1), characterized in that, The inner liner shell (1) has a cavity (10), the inner liner shell (1) includes a first side plate (11) and a second side plate (12), and the cavity (10) is located between the first side plate (11) and the second side plate (12); The cavity (10) is provided with a tensioning mechanism (2), which includes a first lead screw (21), a second lead screw (22) and a rotating body (23) that is rotatably disposed. The first lead screw (21) and the second lead screw (22) are respectively threaded to both ends of the rotating body (23). The first lead screw (21) is disposed on the first side plate (11), and the second lead screw (22) is disposed on the second side plate (12). The thread directions on the first lead screw (21) and the second lead screw (22) are opposite. The tensioning mechanism (2) can open or close the first side plate (11) and the second side plate (12).

2. The casting mold for the main tapping channel of a blast furnace according to claim 1, characterized in that, A support plate (14) is provided inside the cavity (10). The two ends of the support plate (14) abut against the first side plate (11) and the second side plate (12) respectively. The support plate (14) is vertically arranged.

3. The casting mold for the main tapping channel of a blast furnace according to claim 2, characterized in that, The support plate (14) is provided with a first clamping plate (15) and a second clamping plate (16) on both sides of the plate surface. The first clamping plate (15) and the second clamping plate (16) together clamp the support plate (14). The first clamping plate (15) extends to the side and bottom of the cavity (10), and the second clamping plate (16) extends to the side and bottom of the cavity (10).

4. The casting mold for the main tapping channel of a blast furnace according to claim 2, characterized in that, The support plate (14) is provided with a lifting block (141), and the lifting block (141) is provided with a lifting hole (142).

5. The casting mold for the main tapping channel of a blast furnace according to claim 1, characterized in that, The first side plate (11) and the second side plate (12) are provided with lifting blocks (17), the lifting blocks (17) are provided with lifting holes (18), and the lifting blocks (17) are located in the cavity (10).

6. The casting mold for the main tapping trench of a blast furnace according to claim 1, characterized in that, The bottom surface of the inner liner shell (1) is curved.

7. The casting mold for the main tapping channel of a blast furnace according to claim 1, characterized in that, The tensioning mechanism (2) further includes a first base (25) and a second base (26). The first base (25) is disposed on the first side plate (11), the second base (26) is disposed on the second side plate (12), the first lead screw (21) is disposed on the first base (25), and the second lead screw (22) is disposed on the second base (26).

8. The casting mold for the main tapping trench of a blast furnace according to claim 7, characterized in that, The tensioning mechanism (2) further includes a first rotating wheel (27) and a second rotating wheel (28). The first rotating wheel (27) is rotatably mounted on the first base (25), and the second rotating wheel (28) is rotatably mounted on the second base (26). The first lead screw (21) is connected to the first rotating wheel (27), and the second lead screw (22) is connected to the second rotating wheel (28).

9. The casting mold for the main tapping channel of a blast furnace according to claim 1, characterized in that, The inner liner shell (1) is provided with a cover plate (3), which is used to cover the opening end of the cavity (10), and a reinforcing plate (4) is provided on the cover plate (3).

10. The casting mold for the main tapping channel of a blast furnace according to claim 9, characterized in that, The reinforcing plate (4) is provided with a lifting ring (40).

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