Blast furnace bottom refractory masonry leveling device

Abstract

The utility model relates to a blast furnace bottom refractory masonry leveling device, and belongs to the field of blast furnace maintenance equipment. Comprising grid plates (3), supporting plates (2) and fine adjustment seats (4), the supporting plates (2) are arranged at intervals and fixed to a furnace substrate (1), and the grid plates (3) are located on one sides of the supporting plates (2) and abut against the supporting plates (2); the fine adjustment seat (4) comprises a base (41) and a vertical plate (42), the vertical plate (42) is vertically arranged on the base (41), a vertical adjustment rod (45) is vertically arranged on the base (41), a transverse adjustment rod (43) is vertically arranged on the vertical plate (42), the lengths of the vertical adjustment rod (45) and the transverse adjustment rod (43) are adjustable, and the grid plate (3) is arranged on the vertical adjustment rod (45). And the levelness of the upper end of the grid plate (3) is controlled through the fine adjustment seat (4), so that the flatness of the bricked furnace bottom meets the requirement. The problems that in the prior art, the leveling precision of the furnace bottom is not easy to control, and the levelness of the furnace bottom after later masonry is difficult to guarantee are solved.

Description

Technical Field

[0001] This utility model relates to a refractory lining and leveling device for blast furnace bottom, belonging to the field of blast furnace maintenance equipment. Background Technology

[0002] In the installation of the blast furnace body, after the completion of the furnace shell steel structure and auxiliary cooling walls, the refractory lining, air inlet device, and auxiliary electrical instrumentation control system are installed. The blast furnace body consists of the furnace shell (including auxiliary cooling walls) and the refractory lining. The refractory lining is built inside the furnace shell, with the effective volume of the lining varying from 1600 to 4600 tons and the weight of the lining differing, pressing down on the furnace bottom steel plate. Therefore, the quality of the lining construction is extremely strict, especially for the furnace bottom. The surface area of ​​the furnace bottom lining is 109 to 200 square meters. Leveling before lining is a very critical process, the core of which is controlling the flatness of the leveling layer (height difference 0 to -2 mm), which is also a prerequisite for the furnace bottom lining construction. Since the 1598.78 tons of refractory lining material must be built on the furnace base plate according to the production and installation process requirements (its structure is not described in this article), the height gap is used to connect the refractory leveling layer masonry with the furnace base plate or water cooling pipes, and its purpose is to provide the installation elevation and level of the furnace bottom masonry. Therefore, the installation elevation and level of the top of the refractory leveling layer have stringent requirements, especially the levelness (the horizontal area is large, 109㎡, and the height difference accuracy is 0 to -2mm). Because the existing furnace base plate has water cooling pipes and pipe supports, leveling is difficult. Currently, most aftermarket installations use direct masonry, but this results in poor levelness of the top layer of refractory bricks. In practice, manual grinding is used to fix this, which is difficult and costly. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the leveling accuracy of the furnace bottom in the existing technology is not easy to control, which makes it difficult to ensure the levelness of the furnace bottom after the later construction.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a blast furnace bottom refractory lining leveling device, including a grid plate, a support plate and a fine adjustment seat. The support plate is linearly spaced in the gap between adjacent water-cooling pipes and its lower end is fixed to the furnace base plate. The grid plate is located on one side of the support plate and is close to the side wall of the support plate. There are at least two fine adjustment seats, which are spaced apart. Each fine adjustment seat includes a base and a vertical plate. The vertical plate is vertically arranged on the upper end of the base and is located on the side of the grid plate away from the support plate. A vertical adjustment rod is vertically arranged on the upper end of the base. A horizontal adjustment rod is vertically arranged on the vertical plate and is perpendicular to the vertical adjustment rod. The lengths of the vertical and horizontal adjustment rods are adjustable. The grid plate is placed on the vertical adjustment rod and its side wall is in contact with the end of the horizontal adjustment rod.

[0005] In the above-mentioned device, the vertical adjustment rod is a screw structure, and its lower end passes through the base and is threadedly connected to the base.

[0006] Furthermore, the upper end of the base in the above device is provided with a through hole, and a nut adapted to the vertical adjustment rod is provided at the through hole, and the vertical adjustment rod passes through the through hole.

[0007] In the above-mentioned device, the horizontal adjustment rod is a screw structure, and one end of it passes through the vertical plate and is threadedly connected to the vertical plate.

[0008] Furthermore, the upright plate in the above-mentioned device has a through hole on its side wall, and a nut adapted to the horizontal adjustment rod is provided at the through hole, with the horizontal adjustment rod passing through the through hole.

[0009] The support plate in the above-mentioned device has an L-shaped structure.

[0010] The base in the aforementioned device is a channel steel with an opening facing downwards.

[0011] Among them, the connection between the upright plate and the base in the above-mentioned device is provided with a reinforcing rib.

[0012] In the aforementioned device, the grid plate is provided with a support plate on the side near the upright plate, and the lower end of the support plate is placed on the furnace base plate.

[0013] Furthermore, the grid plate in the above-mentioned device can be welded and fixed to the support plate.

[0014] The beneficial effects of this utility model are as follows: To precisely control the flatness of the leveling layer, this device utilizes a leveling grid plate to precisely control the flatness of the leveling layer, thus meeting the requirements for furnace bottom lining construction. Furthermore, this device's technology for precisely leveling large-area furnace bottom refractory materials has been successfully applied in the overhaul and construction of blast furnaces at Panzhihua Iron and Steel Group, achieving the expected results. It can shorten time, reduce costs, and ensure quality in projects requiring leveling before lining large industrial furnace bottoms and for projects with special requirements for the flatness of large-area base surfaces, and has significant promotional and reference value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This utility model Figure 1 A schematic diagram of the main structure.

[0017] Figure 3 This utility model Figure 2 Schematic diagram of AA section.

[0018] Figure 4 This utility model Figure 2 Schematic diagram of the BB cross section.

[0019] Figure 5 This is a schematic diagram of the structure of the fine-tuning seat of this utility model.

[0020] Figure 6 This is a schematic diagram of the furnace bottom structure of this utility model.

[0021] Figure 7 This is a schematic diagram of the structure of this utility model after the grid plate is installed and the water cooling pipe is omitted.

[0022] Attached reference numerals: 1 is furnace base plate, 2 is support plate, 3 is grid plate, 4 is fine adjustment seat, 41 is base, 42 is vertical plate, 43 is horizontal adjustment rod, 44 is reinforcing rib plate, 45 is vertical adjustment rod, 46 is nut, 5 is furnace shell, 6 is water cooling pipe, and 7 is pipe support. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figures 1 to 7As shown, this utility model discloses a blast furnace bottom refractory lining leveling device, comprising a grid plate 3, a support plate 2, and a fine-tuning seat 4. The support plate 2 is linearly spaced within the gap between adjacent water-cooling pipes 6, and its lower end is fixed to the furnace base plate 1. The grid plate 3 is located on one side of the support plate 2 and is close to the side wall of the support plate 2. There are at least two fine-tuning seats 4, which are spaced apart. Each fine-tuning seat 4 includes a base 41 and a vertical plate 42. The vertical plate 42 is vertically arranged on the upper end of the base 41 and is located on the side of the grid plate 3 away from the support plate 2. A vertical adjusting rod 45 is vertically arranged on the upper end of the base 41, and a horizontal adjusting rod 43 is vertically arranged on the vertical plate 42. The horizontal adjusting rod 43 is perpendicular to the vertical adjusting rod 45. The lengths of the vertical adjusting rod 45 and the horizontal adjusting rod 43 are adjustable. The grid plate 3 is placed on the vertical adjusting rod 45, and its side wall is in contact with the end of the horizontal adjusting rod 43. Those skilled in the art will understand that this device primarily uses the grid plate 3 for leveling. To facilitate fixing and adjusting the level of the grid plate 3, the device preferably also includes a support plate 2 and a fine-tuning seat 4. The support plate 2 is mainly used for the initial positioning of the grid plate 3 and for the subsequent fixed support of the grid plate 3. Therefore, the support plate 2 is actually arranged linearly at intervals within the gap between adjacent water-cooling pipes 6, and its lower end is fixed to the furnace base plate 1. It is preferred to fix it by spot welding. The grid plate 3 is located on one side of the support plate 2 and is close to the side wall of the support plate 2 for the initial positioning of the grid plate 3's horizontal position. The height position, i.e., the important horizontal height, needs to be achieved by the fine-tuning seat 4. Preferably, there are at least two fine-tuning seats 4, which are arranged at intervals. The fine-tuning seat 4 includes a base 41 and a vertical plate 42. Plate 42 is vertically mounted on the upper end of base 41, located on the side of grid plate 3 away from support plate 2, so that grid plate 3 is positioned between support plate 2 and vertical plate 42. A vertical adjusting rod 45 is vertically mounted on the upper end of base 41, and a horizontal adjusting rod 43 is vertically mounted on vertical plate 42, keeping the horizontal adjusting rod 43 perpendicular to the vertical adjusting rod 45. Since grid plate 3 is placed on vertical adjusting rod 45, and its sidewall is in contact with the end of horizontal adjusting rod 43, the lengths of vertical adjusting rod 45 and horizontal adjusting rod 43 are further limited to be adjustable. This allows the horizontal and vertical positions of grid plate 3 to be adjusted by adjusting the lengths of horizontal adjusting rod 43 and vertical adjusting rod 45 on a single fine-tuning seat 4. After the position of grid plate 3 is adjusted, it needs to be welded and fixed to support plate 2. Because each grid plate 3 is relatively long (6576-11147mm), and there are 11 of them, the top surface is usually difficult to process; transportation and on-site installation have low precision and are difficult. Therefore, each leveling grid plate 3 is processed into a single 1260mm piece to improve accuracy and facilitate on-site installation. In practice, the grid plates 3 with a spacing of 900mm (a total of 11) and unequal angle steel 200*125*12 support plates 2 (located on the same side of each grid plate) are placed on the furnace base plate 1 with the center line of the iron tap of the furnace shell 5 (0º~180º line) as the reference. After the support plates 2 meet the requirements of verticality and straightness, they are spot welded to the furnace base plate 1 for positioning.After finely adjusting the vertical and horizontal positions of the fine-adjusting seat 4 to meet the requirements, install the grid plate 3 tightly against the 200*125*12 unequal angle steel support plate 2 on the other side; spot weld the grid plate 3 and the 200*125*12 unequal angle steel support plate 2 for positioning and fixing; remove and install a single fine-adjusting seat 4, and continue installation until one grid plate 3 is completed. Repeat the above installation process until all 11 grid plates 3 are installed. Use measuring instruments to check and confirm the height difference of the top surfaces of the 11 grid plates 3, completely eliminate systematic errors, and use an angle grinder to treat local high points. During welding, weld the support plate 2 first; two people weld intermittently from the middle to both ends on a single straight line; weld the longitudinal weld of the support plate 2 (the weld consistent with the length direction of the grid plate 3). After the support plate 2 is welded, weld the connecting weld between the grid plate 3 and the support plate 2; when welding a single grid plate 3, two people need to weld intermittently from the middle to both ends; the welding direction of a single weld must be the same, and the current parameters, weld angle size, and welding speed must be consistent.

[0025] Preferably, the vertical adjustment rod 45 in the above-mentioned device is a screw structure, and its lower end passes through the base 41 and is threadedly connected to the base 41. Those skilled in the art will understand that this device preferably uses a threaded connection between the vertical adjustment rod 45 and the base 41; specifically, it is preferred that the vertical adjustment rod 45 is a screw structure, and its lower end passes through the base 41 and is threadedly connected to the base 41. Since the end of the vertical adjustment rod 45 contacts the lower end of the grid plate 3 to achieve vertical adjustment of the grid plate 3, i.e., height adjustment, simply turning the vertical adjustment rod 45 will achieve height adjustment of the grid plate 3.

[0026] Preferably, the upper end of the base 41 in the above-mentioned device is provided with a through hole, and a nut 46 adapted to the vertical adjusting rod 45 is provided at the through hole, with the vertical adjusting rod 45 passing through the through hole. Those skilled in the art will understand that this device is simply a further preferred method of threaded connection; specifically, the upper end of the base 41 is provided with a through hole, and a nut 46 adapted to the vertical adjusting rod 45 is provided at the through hole, with the vertical adjusting rod 45 passing through the through hole, that is, the vertical adjusting rod 45 and the nut 46 are threadedly connected.

[0027] Preferably, the horizontal adjusting rod 43 in the above-mentioned device is a screw structure, with one end passing through the vertical plate 42 and threadedly connected to the vertical plate 42. Those skilled in the art will understand that this device preferably uses a threaded connection between the horizontal adjusting rod 43 and the vertical plate 42; specifically, it is preferred that the horizontal adjusting rod 43 is a screw structure, with one end passing through the vertical plate 42 and threadedly connected to it. Since the end of the horizontal adjusting rod 43 contacts the side wall of the grid plate 3 to achieve horizontal position adjustment of the grid plate 3, the actual adjustment of the grid plate 3 position can be achieved by turning the horizontal adjusting rod 43.

[0028] Preferably, the upright plate 42 in the above-mentioned device has a through hole on its side wall, and a nut 46 adapted to the horizontal adjusting rod 43 is provided at the through hole, with the horizontal adjusting rod 43 passing through the through hole. Those skilled in the art will understand that this device preferably has a through hole on the side wall of the upright plate 42, and a nut 46 adapted to the horizontal adjusting rod 43 is provided at the through hole, with the horizontal adjusting rod 43 actually passing through the through hole and the horizontal adjusting rod 43 threadedly connected to the nut 46.

[0029] Preferably, the support plate 2 in the above-mentioned device has an L-shaped structure. Those skilled in the art will understand that, in order to ensure the supporting effect and considering the installation interference of the water-cooling pipe 6 and the pipe support 7, the support plate 2 is preferably L-shaped, so that the lower end of the support plate 2 is stably placed on the furnace base plate 1. Since the grid plate 3 will be welded to the support plate 2 after the horizontality of the grid plate 3 meets the requirements, and the support plate 2 is welded to the furnace base plate 1, the position of the grid plate 3 is fixed during the masonry process, ensuring a horizontal base surface for the masonry.

[0030] Preferably, the base 41 in the above-described device is a channel steel with an opening facing downwards. Those skilled in the art will understand that, in order to ensure the stable placement of the fine-tuning seat 4, the base 41 of this device is preferably a channel steel with an opening facing downwards.

[0031] Preferably, a reinforcing rib 44 is provided at the connection between the upright plate 42 and the base 41 in the above-described device. Those skilled in the art will understand that, in order to ensure the structural strength of the upright plate 42, the device preferably provides a reinforcing rib 44 at the connection between the upright plate 42 and the base 41.

[0032] Preferably, in the above-mentioned device, a support plate 2 is provided on the side of the grid plate 3 near the upright plate 42, and the lower end of the support plate 2 is placed on the furnace base plate 1. Those skilled in the art will understand that, in order to ensure the stable support of the grid plate 3, this device preferably provides a support plate 2 on the side of the grid plate 3 near the upright plate 42, and the support plate 2 and the grid plate 3 can be connected and fixed. Simultaneously, the lower end of the support plate 2 is placed on the furnace base plate 1 and fixed thereto.

[0033] Preferably, the grid plate 3 in the above-mentioned device can be welded and fixed to the support plate 2. Those skilled in the art will understand that the connection method between the grid plate 3 and the support plate 2 is further preferred in this device. It should be noted that the preferred welding and fixing here is to weld and fix the grid plate 3 to the support plate 2 after leveling is completed, that is, after the horizontality of the upper end of the grid plate 3 reaches the design requirements, so as to keep the position of the grid plate 3 unchanged in the later masonry.

Claims

1. A refractory lining leveling device for blast furnace bottom, characterized in that: The system includes a grid plate (3), a support plate (2), and a fine-tuning seat (4). The support plate (2) is linearly spaced within the gap between adjacent water-cooled pipes (6), and its lower end is fixed to the furnace base plate (1). The grid plate (3) is located on one side of the support plate (2) and is close to the side wall of the support plate (2). There are at least two fine-tuning seats (4) spaced apart. Each fine-tuning seat (4) includes a base (41) and a vertical plate (42). The vertical plate (42) is vertically mounted on the base (41). The upper end of the base (41) is located on the side of the grid plate (3) away from the support plate (2). A vertical adjustment rod (45) is vertically arranged on the upper end of the base (41). A horizontal adjustment rod (43) is vertically arranged on the upright plate (42). The horizontal adjustment rod (43) is vertically arranged with the vertical adjustment rod (45). The lengths of the vertical adjustment rod (45) and the horizontal adjustment rod (43) are adjustable. The grid plate (3) is placed on the vertical adjustment rod (45), and its side wall is in contact with the end of the horizontal adjustment rod (43).

2. The refractory lining leveling device for blast furnace bottom as described in claim 1, characterized in that: The vertical adjustment rod (45) is a screw structure, and its lower end passes through the base (41) and is threadedly connected to the base (41).

3. The refractory lining leveling device for blast furnace bottom as described in claim 2, characterized in that: The base (41) has a through hole at its upper end, and a nut (46) adapted to the vertical adjustment rod (45) is provided at the through hole. The vertical adjustment rod (45) passes through the through hole.

4. A blast furnace bottom refractory lining leveling device as described in claim 1 or 2, characterized in that: The horizontal adjustment rod (43) is a screw structure, and one end is threaded through the vertical plate (42) and connected to the vertical plate (42) by a thread.

5. The refractory lining leveling device for blast furnace bottom as described in claim 4, characterized in that: The side wall of the upright plate (42) is provided with a through hole, and a nut (46) adapted to the horizontal adjustment rod (43) is provided at the through hole. The horizontal adjustment rod (43) passes through the through hole.

6. The refractory lining leveling device for blast furnace bottom as described in claim 1, characterized in that: The support plate (2) has an L-shaped structure.

7. The refractory lining leveling device for blast furnace bottom as described in claim 1, characterized in that: The base (41) is a channel steel with an opening facing downwards.

8. The refractory lining leveling device for blast furnace bottom as described in claim 1, characterized in that: A reinforcing rib (44) is provided at the connection between the upright plate (42) and the base (41).

9. A blast furnace bottom refractory lining leveling device as described in claim 1, characterized in that: The grid plate (3) is provided with a support plate (2) on the side of the upright plate (42), and the lower end of the support plate (2) is placed on the furnace base plate (1).

10. A blast furnace bottom refractory lining leveling device as described in claim 9, characterized in that: The grid plate (3) can be welded and fixed to the support plate (2).

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