Blast furnace cooling wall water pipe casting fixing device

Abstract

The blast furnace cooling wall water pipe casting fixing device comprises an upper sand mold and a lower sand mold, the upper sand mold and the lower sand mold are fixedly connected, a plurality of cooling wall water pipes are evenly arranged in the lower sand mold, an upper pressing plate is fixedly installed on the upper surfaces of the cooling wall water pipes, and a lower pressing plate is fixedly installed on the lower surfaces of the cooling wall water pipes. A plurality of kidney-shaped holes are evenly formed in the surface of the upper pressing plate and the surface of the lower pressing plate respectively, L-shaped threaded rods are installed in the kidney-shaped holes in a penetrating mode, first nuts are fixedly installed on the contact faces of the L-shaped threaded rods and the upper pressing plate, and the first nuts are fixed on the surface of the upper pressing plate. A second nut is fixedly installed on the contact face of the L-shaped threaded rod and the lower pressing plate and located on the bottom face of the lower pressing plate to be fixed. The fixing device has the beneficial effects of being more reasonable in structural design, convenient to operate, easy to process, low in processing and manufacturing cost, and capable of limiting and fixing the cooling wall water pipe in the blast furnace cooling wall, effectively preventing potential safety hazards caused by displacement of the cooling wall water pipe, and prolonging the service life of the cooling wall.

Description

Technical Field

[0001] This utility model relates to the technical field of casting equipment for blast furnace cooling wall protection, specifically a casting fixing device for water pipes of blast furnace cooling wall. Background Technology

[0002] Blast furnace cooling walls are a common type of cooler used in blast furnaces. They are installed between the inner brick lining and the outer furnace shell, with their hot side facing the inner brick lining. Through surface cooling, they smoothly dissipate heat transferred from the inner brick lining, controlling its operating temperature within a reasonable range. Simultaneously, they prevent high-temperature heat from directly reaching the outer furnace shell, thus providing effective protection for the outer shell and extending the blast furnace's service life. The cooling wall mainly consists of the cooling wall body and cooling water pipes embedded within it. Cooling water circulates within the cooling water pipes, carrying away heat and lowering the temperature of the cooling wall body.

[0003] The design of cooling wall water pipes plays an important role in improving the performance of cooling walls and thus extending the service life of blast furnaces. During the casting production process of cooling walls, due to the large internal space of the molding cavity and the strict technical requirements on the distance between the cooling wall water pipes and the outer surface of the cooling wall, the cooling wall water pipes will shift within the mold cavity during the casting process due to their large buoyancy. This will eventually result in the cooling wall water pipes being too close to the outer surface of the cooling wall, and in more serious cases, the cooling wall water pipes will be exposed, which will seriously affect the service life of the cooling wall.

[0004] To address the above situation, a device is needed to fix the cooling wall water pipes in order to solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a casting fixing device for blast furnace cooling wall water pipes that has a more reasonable structural design, novel concept, convenient operation, easy processing, low processing cost, and can limit and fix the cooling wall water pipes in the blast furnace cooling wall, effectively preventing the safety hazards caused by the displacement of the cooling wall water pipes and extending the service life of the cooling wall.

[0006] This utility model discloses a casting fixing device for blast furnace cooling wall water pipes, comprising an upper sand mold and a lower sand mold, which are fixedly connected. Multiple cooling wall water pipes are evenly arranged inside the lower sand mold. An upper pressure plate is fixedly installed on the upper surface of each cooling wall water pipe, and a lower pressure plate is fixedly installed on the lower surface of each cooling wall water pipe. Multiple oblong holes are evenly arranged on the surfaces of the upper and lower pressure plates, and L-shaped threaded rods are installed through these oblong holes. A first nut is fixedly installed at the contact surface between the L-shaped threaded rod and the upper pressure plate, and the first nut is fixedly located on the surface of the upper pressure plate. A second nut is fixedly installed at the contact surface between the L-shaped threaded rod and the lower pressure plate, and the second nut is fixedly located on the bottom surface of the lower pressure plate.

[0007] The upper and lower pressure plates, located on the upper and lower surfaces of the cooling wall water pipes, limit their position and prevent displacement during casting due to buoyancy. The L-shaped threaded rod, passing through a through-hole, secures the upper pressure plate with a first nut and the lower pressure plate with a second nut, thus fixing them to the cooling wall. The upper and lower surfaces of the water pipes are used to fix the upper and lower pressure plates, thereby fixing the cooling wall water pipes between the upper and lower pressure plates. This effectively prevents the cooling wall water pipes from moving during the casting process inside the cooling wall, thus reducing the distance between the cooling wall water pipes and the outer surface of the cooling wall. In more serious cases, this could cause the cooling wall water pipes to be exposed, severely affecting the service life of the cooling wall. This method makes the fixing of the cooling wall water pipes more secure and safer, making it less likely for the cooling wall water pipes to shift.

[0008] The L-shaped threaded rod is fixedly installed between the cooling wall water pipes, and the L-shaped threaded rod is located inside the upper and lower sand molds.

[0009] Multiple L-shaped threaded rods are provided, and each L-shaped threaded rod can be fixed between multiple cooling wall water pipes, making the fixation more uniform and comprehensive. It can be used to fix multiple cooling wall water pipes. The L-shaped threaded rods are positioned between the upper and lower pressure plates, making them less likely to come out easily, improving the firmness and stability of the fixation, and strengthening the fixation strength of the cooling wall water pipes.

[0010] The upper and lower pressure plates are each provided with a plurality of through holes evenly distributed on their surfaces. A screw is installed through each through hole. A third nut is fixedly installed at the contact surface between the screw and the upper pressure plate, and at the contact surface between the screw and the lower pressure plate. The third nuts are respectively attached to and fixed to the surface of the upper pressure plate and the bottom surface of the lower pressure plate.

[0011] The screw is fixedly installed on both sides of the upper and lower pressure plates.

[0012] The screw rod is designed to pass through through holes in the surfaces of the upper and lower pressure plates. A third nut is fixedly installed on the surface of the upper pressure plate and on the bottom surface of the lower pressure plate, which further secures the upper and lower pressure plates. The screw rod is fixedly installed on the side walls of the upper and lower pressure plates, which can fix the side edges of the upper and lower pressure plates. It works in conjunction with the L-shaped threaded rod, which fixes the middle position of the upper and lower pressure plates, and the screw rod fixes the side edges of the upper and lower pressure plates, which can further achieve all-round fixation of the cooling wall water pipes, effectively preventing the cooling wall water pipes from moving and making the fixation more comprehensive and reliable.

[0013] The beneficial effects of this utility model are:

[0014] 1) The upper and lower pressure plates are located on the upper and lower surfaces of the cooling wall water pipes, respectively. They limit the position of the cooling wall water pipes, preventing displacement within the mold cavity due to buoyancy during casting. This limiting effect effectively prevents movement of the cooling wall water pipes. The L-shaped threaded rod, passing through a through-hole, has a first nut fixed to the surface of the upper pressure plate and a second nut fixed to the bottom surface of the lower pressure plate, thus securing the upper and lower pressure plates to the cooling wall. The upper and lower surfaces of the wall water pipe are used to fix the upper and lower pressure plates, thereby fixing the cooling wall water pipe between the upper and lower pressure plates. This effectively prevents the cooling wall water pipe from moving during the casting process inside the cooling wall, thus reducing the distance between the cooling wall water pipe and the outer surface of the cooling wall. In more serious cases, this could cause the cooling wall water pipe to be exposed, severely affecting the service life of the cooling wall. This method makes the fixing of the cooling wall water pipe more secure and safer, making it less likely for the cooling wall water pipe to shift.

[0015] 2) Multiple L-shaped threaded rods are provided, and each L-shaped threaded rod can be fixed between multiple cooling wall water pipes, making the fixing more uniform and comprehensive. It can be used to fix multiple cooling wall water pipes. The L-shaped threaded rods are located between the upper and lower pressure plates, making them less likely to come out easily, improving the firmness and stability of the fixing, and strengthening the fixing strength of the cooling wall water pipes.

[0016] 3) The screw rod is installed through the through holes on the surfaces of the upper and lower pressure plates. A third nut is fixedly installed on the surface of the upper pressure plate and on the bottom surface of the lower pressure plate, which can further fix the upper and lower pressure plates. The screw rod is fixedly installed on the side walls of the upper and lower pressure plates, which can fix the side edges of the upper and lower pressure plates. It cooperates with the L-shaped threaded rod. The L-shaped threaded rod fixes the middle position of the upper and lower pressure plates, and the screw rod fixes the side edges of the upper and lower pressure plates, which can further achieve all-round fixation of the cooling wall water pipes, and further effectively prevent the movement of the cooling wall water pipes, making the fixation more comprehensive and reliable.

[0017] 4) This fixing device has a more reasonable structural design, novel concept, convenient operation, easy processing, and low processing cost. It can limit and fix the cooling wall water pipes in the blast furnace cooling wall, effectively preventing the safety hazards caused by the displacement of the cooling wall water pipes and extending the service life of the cooling wall. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the upper pressure plate in this utility model;

[0020] Figure 3 This is a schematic diagram of the upper pressure plate in this utility model.

[0021] In the diagram: 1. Upper sand mold, 2. L-shaped threaded rod, 3. First nut, 4. Upper pressure plate, 401. Waist-shaped hole, 402. Through hole, 5. Third nut, 6. Screw, 7. Cooling wall water pipe, 8. Lower pressure plate, 9. Second nut, 10. Lower sand mold. Detailed Implementation

[0022] Example 1.

[0023] The following will be combined with the appendix Figure 1-3 The present invention will be further described below.

[0024] This utility model includes an upper sand mold 1, a threaded rod 2, a first nut 3, an upper pressure plate 4, a waist-shaped hole 401, a through hole 402, a cooling wall water pipe 7, a lower pressure plate 8, a second nut 9, and a lower sand mold 10. Specifically, the upper sand mold 1 and the lower sand mold 10 are fixedly connected. Multiple cooling wall water pipes 7 are evenly arranged inside the lower sand mold 10. An upper pressure plate 4 is fixedly installed on the upper surface of each cooling wall water pipe 7, and a lower pressure plate 8 is fixedly installed on the lower surface of each cooling wall water pipe 7. Multiple waist-shaped holes 401 are evenly arranged on the surfaces of both the upper and lower pressure plates 4 and 8. An L-shaped threaded rod 2 is installed through each waist-shaped hole 401. A first nut 3 is fixedly installed at the contact surface between the L-shaped threaded rod 2 and the upper pressure plate 4, and is located on the surface of the upper pressure plate 4. A second nut 9 is fixedly installed at the contact surface between the L-shaped threaded rod 2 and the lower pressure plate 8, and is located on the bottom surface of the lower pressure plate 8.

[0025] The L-shaped threaded rod 2 is fixedly installed between the cooling wall water pipes 7, and the L-shaped threaded rod 2 is located inside the upper sand mold 1 and the lower sand mold 10.

[0026] Instructions for use: First, during the molding process, pre-embed L-shaped screws 2 in the upper sand mold 1 and the lower sand mold 10. The distance from which the L-shaped screws 2 extend out of the upper sand mold 1 is determined based on the thickness of the cooling wall and the outer diameter of the cooling wall water pipe 7. Specifically, it is the distance from the upper surface of the cooling wall, i.e., the distance from the upper sand mold 1 to the farthest wall of the water pipe, plus the thickness of the pressure plate 8, plus the thickness of the second nut 9, plus 1-2mm. This is the distance from which the L-shaped screws 2 extend out of the upper sand mold 1. This distance should not exceed the thickness of the cooling wall. The best position for the L-shaped screws 2 is in the middle of the two cooling wall water pipes 7.

[0027] After the upper sand mold 1 is shaped, the first nut 3 is fixed. The first nut 3 determines the distance between the cooling wall water pipe 7 and the surface of the cooling wall. The upper pressure plate 4 is placed on the first nut 3, then the cooling wall water pipe 7 is placed, and then the lower pressure plate 8 is placed. The position of the lower pressure plate 8 is fixed and adjusted by the second nut 9.

[0028] To ensure that the L-shaped threaded rod 2 is completely integrated with the cooling wall without breaking, an L-shaped threaded rod 2 with a diameter of φ16mm is adopted.

[0029] The number of upper pressure plates 4 and lower pressure plates 8 is four. The distance between each upper pressure plate 4 is no more than 600mm, the distance between each lower pressure plate 8 is no more than 600mm, and both ends near the bend of the cooling wall water pipe 7 must be fixed by upper pressure plates 4 and lower pressure plates 8.

[0030] To ensure that the upper pressure plate 4 and the lower pressure plate 8 do not melt, the upper pressure plate 4 and the lower pressure plate 8 are made of Q235 steel plate with a thickness of 8-10mm and a width of 60mm.

[0031] Example 2.

[0032] The following will be combined with the appendix Figure 1-3 The present invention will be further described below.

[0033] This utility model includes an upper sand mold 1, a threaded rod 2, a first nut 3, an upper pressure plate 4, a waist-shaped hole 401, a through hole 402, a third nut 5, a screw 6, a cooling wall water pipe 7, a lower pressure plate 8, a second nut 9, and a lower sand mold 10. Specifically, the upper sand mold 1 and the lower sand mold 10 are fixedly connected. Multiple cooling wall water pipes 7 are evenly arranged inside the lower sand mold 10. An upper pressure plate 4 is fixedly installed on the upper surface of each cooling wall water pipe 7, and a lower pressure plate 8 is fixedly installed on the lower surface of each cooling wall water pipe 7. Multiple waist-shaped holes 401 are evenly arranged on the surfaces of both the upper and lower pressure plates 4 and 8. An L-shaped threaded rod 2 is installed through each waist-shaped hole 401. A first nut 3 is fixedly installed at the contact surface between the L-shaped threaded rod 2 and the upper pressure plate 4, and is located on the surface of the upper pressure plate 4. A second nut 9 is fixedly installed at the contact surface between the L-shaped threaded rod 2 and the lower pressure plate 8, and is located on the bottom surface of the lower pressure plate 8.

[0034] The L-shaped threaded rod 2 is fixedly installed between the cooling wall water pipes 7, and the L-shaped threaded rod 2 is located inside the upper sand mold 1 and the lower sand mold 10.

[0035] The surfaces of the upper pressure plate 4 and the lower pressure plate 8 are each uniformly provided with a plurality of through holes 402. A screw 6 is installed through the through hole 402. A third nut 5 is fixedly installed at the contact surface between the screw 6 and the upper pressure plate 4. A third nut 5 is fixedly installed at the contact surface between the screw 6 and the lower pressure plate 8. The third nut 5 is attached and fixed to the surface of the upper pressure plate 4 and the bottom surface of the lower pressure plate 8.

[0036] The screw 6 is fixedly installed on both sides of the upper pressure plate 4 and the lower pressure plate 8.

[0037] Instructions for use: First, during the molding process, pre-embed L-shaped screws 2 in the upper sand mold 1 and the lower sand mold 10. The distance from which the L-shaped screws 2 extend out of the upper sand mold 1 is determined based on the thickness of the cooling wall and the outer diameter of the cooling wall water pipe 7. Specifically, it is the distance from the upper surface of the cooling wall, i.e., the distance from the upper sand mold 1 to the farthest wall of the water pipe, plus the thickness of the pressure plate 8, plus the thickness of the second nut 9, plus 1-2mm. This is the distance from which the L-shaped screws 2 extend out of the upper sand mold 1. This distance should not exceed the thickness of the cooling wall. The best position for the L-shaped screws 2 is in the middle of the two cooling wall water pipes 7.

[0038] After the upper sand mold 1 is shaped, fix the first nut 3. The first nut 3 determines the distance between the cooling wall water pipe 7 and the surface of the cooling wall. Place the upper pressure plate 4 on the first nut 3, then place the cooling wall water pipe 7, and then place the lower pressure plate 8. Fix and adjust the position of the lower pressure plate 8 by the second nut 9. After the left and right distance of the lower pressure plate 8 is adjusted appropriately, pre-fix the bolt 6, and finally fix it with the second nut 9. The bolt 6 extends 1-2mm beyond the third nut 5.

[0039] To ensure that the L-shaped threaded rod 2 is completely integrated with the cooling wall without breaking, an L-shaped threaded rod 2 with a diameter of φ16mm is adopted.

[0040] The number of upper pressure plates 4 and lower pressure plates 8 is four. The distance between each upper pressure plate 4 is no more than 600mm, the distance between each lower pressure plate 8 is no more than 600mm, and both ends near the bend of the cooling wall water pipe 7 must be fixed by upper pressure plates 4 and lower pressure plates 8.

[0041] The waist-shaped hole 401 has a size of 36*18mm. The purpose of designing the waist-shaped hole 401 is to facilitate the left and right movement and adjustment of the upper pressure plate 4 and the lower pressure plate 8, and to make most of the upper pressure plate 4 and the lower pressure plate 8 interchangeable, thereby reducing the difficulty of production.

[0042] To ensure that the upper pressure plate 4 and the lower pressure plate 8 do not melt, the upper pressure plate 4 and the lower pressure plate 8 are made of Q235 steel plate with a thickness of 8-10mm and a width of 60mm.

[0043] The diameter of the hole 402 is 1-2 mm larger than the diameter of the screw 6. The distance between the edge of the hole 402 and the edge of the upper pressure plate 4 and the lower pressure plate 8 is 5 mm. The position of the hole 402 is the center of the hole 402 plus the radius of the bolt 6 plus 5 mm.

[0044] The screw 6 is installed through a through hole 402 on the surface of the upper pressure plate 4 and the lower pressure plate 8. A third nut 5 is fixedly installed on the surface of the upper pressure plate 4 and the bottom surface of the lower pressure plate 8, which can further fix the upper pressure plate 4 and the lower pressure plate 8. The screw 6 is fixedly installed on the side walls of the upper pressure plate 4 and the lower pressure plate 8, which can fix the side edges of the upper pressure plate 4 and the lower pressure plate 8. It cooperates with the L-shaped threaded rod 2. The L-shaped threaded rod 2 fixes the middle position of the upper pressure plate 4 and the lower pressure plate 8, and the screw 6 fixes the side edges of the upper pressure plate 4 and the lower pressure plate 8, which can further achieve all-round fixation of the cooling wall water pipe 7, and further effectively prevent the movement of the cooling wall water pipe 7, making the fixation more comprehensive and reliable.

Claims

1. A blast furnace cooling wall water pipe casting fixing device, comprising an upper sand mold (1) and a lower sand mold (10), the upper sand mold (1) and the lower sand mold (10) are fixedly connected, a plurality of cooling wall water pipes (7) are uniformly arranged in the lower sand mold (10), characterized in that: An upper pressure plate (4) is fixedly installed on the upper surface of the cooling wall water pipe (7), and a lower pressure plate (8) is fixedly installed on the lower surface of the cooling wall water pipe (7). Multiple waist-shaped holes (401) are evenly arranged on the surfaces of the upper pressure plate (4) and the lower pressure plate (8). An L-shaped threaded rod (2) is installed through the waist-shaped hole (401). A first nut (3) is fixedly installed at the contact surface between the L-shaped threaded rod (2) and the upper pressure plate (4). The first nut (3) is fixed on the surface of the upper pressure plate (4). A second nut (9) is fixedly installed at the contact surface between the L-shaped threaded rod (2) and the lower pressure plate (8). The second nut (9) is fixed on the bottom surface of the lower pressure plate (8).

2. A cast-in-place water tube fixing device for a cooling stave of a blast furnace according to claim 1, characterized in that: The L-shaped threaded rod (2) is fixedly installed between the cooling wall water pipes (7), and the L-shaped threaded rod (2) is located inside the upper sand mold (1) and the lower sand mold (10).

3. A cast-in-place water tube fixing device for a cooling stave of a blast furnace according to claim 2, characterized in that: The surfaces of the upper pressure plate (4) and the lower pressure plate (8) are each uniformly provided with multiple through holes (402). A screw (6) is installed through the through hole (402). A third nut (5) is fixedly installed at the contact surface between the screw (6) and the upper pressure plate (4). A third nut (5) is fixedly installed at the contact surface between the screw (6) and the lower pressure plate (8). The third nut (5) is respectively attached to and fixed to the surface of the upper pressure plate (4); the third nut (5) is attached to and fixed to the bottom surface of the lower pressure plate (8).

4. A cast-in-place water tube fixing device for a cooling stave of a blast furnace according to claim 3, characterized in that: The screw (6) is fixedly installed on both sides of the upper pressure plate (4) and the lower pressure plate (8).

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