Novel blast furnace smelting slag trough slag falling point water-cooling protection plate

Abstract

The utility model relates to a novel blast furnace smelting slag trough slag falling point water-cooling protective plate, which belongs to the technical field of blast furnace smelting and comprises two plate bodies, water through holes are arranged in the plate bodies, interlayers are fixedly connected to the inner sides of the water through holes, and connecting pieces are arranged on the outer sides of the plate bodies. The connecting piece comprises a fixing block with one end fixedly connected with the outer side of the right side plate body, and a connecting block is fixedly connected with the outer side of the left side plate body. According to the novel blast furnace smelting slag trough slag falling point water-cooling protection plate, slag flushing water is directly introduced into the water through holes of the plate body, so that the slag flushing water and the plate body are discharged synchronously when blast furnace slag is discharged, and the slag flushing water is closed and the plate body is also cut off when slag is not discharged, intermittent water supply of the plate body is realized, water sources are saved, and the service life of the plate body is prolonged. Cooling water passes through the water channel and then directly converges into a water slag pool from the water outlet of the plate body, a circulating water channel does not need to be additionally constructed, the cooling effect of slag is maintained, and the partition layer is a high-temperature-resistant zirconium-containing fiber layer, so that the expansion coefficient of the plate body is reduced, and the durability of the plate body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace smelting, in particular to a water-cooled guard plate at the slag dropping point of a new blast furnace smelting slag ditch. Background Technique

[0002] The blast furnace uses a steel plate as the furnace shell, and refractory bricks are lined inside the shell. The blast furnace body is divided into 5 parts from top to bottom: the furnace throat, the furnace body, the furnace waist, the furnace belly, and the hearth. Due to the good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor productivity, and low energy consumption, most of the iron produced by this method accounts for the total world iron production.

[0003] During the blast furnace smelting process, a large amount of slag will be generated, and the generated slag usually needs to be cooled. Currently, common cooling methods include natural cooling, cooling through water flow or air. Although the natural cooling method is simple and has low energy consumption, its efficiency is low. While the cooling method through water flow or air has high efficiency, but also high energy consumption, resulting in poor slag cooling effect. Therefore, a new water-cooled guard plate at the slag dropping point of a blast furnace smelting slag ditch is proposed to solve the above problems. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a new water-cooled guard plate at the slag dropping point of a blast furnace smelting slag ditch, which has the advantages of improving the cooling effect and low energy consumption, and solves the problem of poor cooling effect.

[0005] To achieve the above object, the utility model provides the following technical solution: A new water-cooled guard plate at the slag dropping point of a blast furnace smelting slag ditch, including two plate bodies. A water passing hole is opened inside the plate body, a partition layer is fixedly connected to the inner side of the water passing hole, and a connecting piece is arranged on the outer side of the plate body;

[0006] The connecting piece includes a fixed block fixedly connected to the outer side of the right plate body at one end, a connecting block is fixedly connected to the outer side of the left plate body, a support rod is fixedly connected to the upper end of the fixed block, a rotating block is rotatably connected to the upper end of the support rod, an installation groove is opened on the front surface of the rotating block, a blocking block is rotatably connected to the inner side of the installation groove, a vertical rod is fixedly connected to the upper end of the connecting block, a movable block is rotatably connected to the upper end of the vertical rod, and a limiting block is fixedly connected to the inner side of the movable block.

[0007] Further, two mounting blocks are fixedly connected to both the upper and lower sides of the plate body, and mounting holes are opened inside the mounting blocks.

[0008] Further, an interface communicating with the water passing hole at one end is opened on one side of the plate body, and the partition layer is a high-temperature resistant fiber layer containing zirconium.

[0009] Furthermore, the connecting block is L-shaped, and a groove is formed at the end of the connecting block, and the specification of the groove is adapted to the specification of the support rod.

[0010] Furthermore, a perforation is formed on the front surface of the rotating block, and one end of the perforation communicates with the installation groove, and the specification of the perforation is adapted to the specification of the vertical rod.

[0011] Furthermore, a through hole is formed on the rotating block, and one end of the through hole communicates with the installation groove. A limiting groove is formed at the upper end of the blocking block. The specifications of the through hole and the limiting groove are both adapted to the specification of the limiting block, and the lower end of the limiting block is inclined.

[0012] Furthermore, the upper end of the vertical rod is U-shaped, the movable block is rotatably connected to the U-shaped end of the vertical rod through a rotating shaft, and a first torsion spring is arranged between the outer side of the movable block and the inner side of the U-shaped end of the vertical rod.

[0013] Furthermore, the blocking block is rotatably connected to the inner side of the installation groove through a connecting shaft, and a second torsion spring is arranged between the outer side of the blocking block and the inner side of the installation groove.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0015] 1. For the novel water-cooled protection plate at the slag dropping point of the blast furnace smelting slag ditch, since water passing holes are formed inside the plate body, the slag flushing water can be directly introduced into the water passing holes of the plate body, so that when the blast furnace discharges slag, the slag flushing water and the plate body discharge water synchronously. When there is no slag discharge, the slag flushing water is closed, and the plate body also stops supplying water accordingly, realizing intermittent water supply to the plate body. While saving water, the cooling water directly flows into the water slag pool from the water outlet of the plate body after passing through the water channel, and there is no need to construct a separate circulating water channel to maintain the cooling effect of the slag. And since the interlayer is a high-temperature resistant fiber layer containing zirconium, the expansion coefficient of the plate body is reduced, and the durability of the plate body is improved.

[0016] 2. For the novel water-cooled protection plate at the slag dropping point of the blast furnace smelting slag ditch, since fixing blocks and connecting blocks are respectively fixed on the upper and lower sides of the two plate bodies, when the two plate bodies are to be connected, the fixing blocks can be inserted into the connecting blocks. After the vertical rod extending into the rotating block is blocked by the blocking block, the blocking block is limited by the limiting block, and the installation connection between the two plate bodies can be completed, so that the length of the plate body can be adjusted according to the slag cooling effect, improving the use convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 The enlarged view at A in;

[0019] Figure 3This is a three-dimensional schematic diagram of the connection between the fixing block and the connecting block of the utility model.

[0020] In the figure: 1 plate body, 2 water through holes, 3 interlayer, 4 mounting blocks, 5 connecting pieces, 51 fixing block, 52 connecting block, 53 groove, 54 support rod, 55 rotating block, 56 pressing rod, 57 mounting groove, 58 vertical rod, 59 movable block, 510 limiting block, 511 blocking block. Specific implementation manner

[0021] 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 the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1 , a new type of water-cooled protection plate for the slag dropping point of a blast furnace smelting slag ditch in this embodiment includes two plate bodies 1. Water through holes 2 are opened inside the plate body 1. An interlayer 3 is fixedly connected to the inner side of the water through holes 2. A connecting piece 5 is arranged on the outer side of the plate body 1;

[0023] Two mounting blocks 4 are fixedly connected to both the upper and lower sides of the plate body 1. Mounting holes are opened inside the mounting blocks 4. During the installation process of the plate body 1, it is fixedly installed through the mounting holes on the mounting blocks 4, so that the plate body 1 forms a U shape or a V shape to form a slag dropping point for guiding and cooling the slag.

[0024] In this embodiment, since water through holes 2 are opened inside the plate body 1, the slag flushing water can be directly introduced into the water through holes 2 of the plate body 1. When the blast furnace discharges slag, the slag flushing water and the plate body 1 discharge water synchronously. When there is no slag discharge, the slag flushing water is closed, and the plate body 1 also stops supplying water accordingly, realizing intermittent water supply for the plate body 1. While saving water resources, the cooling water directly flows into the water slag pool from the water outlet of the plate body 1 after passing through the water channel, and there is no need to construct a separate circulating water channel to maintain the cooling effect of the slag. And since the interlayer 3 is a high-temperature resistant fiber layer containing zirconium.

[0025] Among them, an interface 6 communicating with the water through hole 2 at one end is opened on one side of the plate body 1. The interlayer 3 is a high-temperature resistant fiber layer containing zirconium, which reduces the expansion coefficient of the plate body 1 and improves the durability of the plate body 1.

[0026] It should be noted that the plate body 1 is a metal plate, and the water through holes 2 are distributed in a serpentine shape inside the plate body 1.

[0027] Please refer to Figures 2 to 3, in this embodiment, the connecting member 5 includes a fixed block 51 with one end fixedly connected to the outer side of the right plate body 1, a connecting block 52 fixedly connected to the outer side of the left plate body 1, a support rod 54 fixedly connected to the upper end of the fixed block 51, a rotating block 55 rotatably connected to the upper end of the support rod 54, an installation groove 57 formed on the front surface of the rotating block 55, a blocking block 511 rotatably connected to the inner side of the installation groove 57, a vertical rod 58 fixedly connected to the upper end of the connecting block 52, a movable block 59 rotatably connected to the upper end of the vertical rod 58, and a limiting block 510 fixedly connected to the inner side of the movable block 59.

[0028] In this embodiment, since the fixed block 51 and the connecting block 52 are respectively fixed to the upper and lower sides of the two plate bodies 1, when the two plate bodies 1 are to be connected to each other, the fixed block 51 can be inserted into the connecting block 52. After the vertical rod 58 extending into the rotating block 55 is blocked by the blocking block 511, the blocking block 511 is limited by the limiting block 510, and the installation connection between the two plate bodies 1 can be completed. The length of the plate body 1 can be adjusted according to the slag cooling effect, improving the convenience of use.

[0029] Among them, the connecting block 52 is L-shaped, and a groove 53 is formed at the end of the connecting block 52. The specification of the groove 53 is adapted to the specification of the support rod 54, so that the mutually attached fixed block 51 and connecting block 52 can drive the support rod 54 to extend into the inner side of the groove 53.

[0030] In addition, a perforation communicating with the installation groove 57 at one end is formed on the front surface of the rotating block 55. The specification of the perforation is adapted to the specification of the vertical rod 58, so that when the blocking block 511 rotates out of the installation groove 57, the vertical rod 58 can extend into the perforation.

[0031] In addition, a through hole communicating with the installation groove 57 at one end is formed on the rotating block 55. A limiting groove is formed at the upper end of the blocking block 511. The specifications of the through hole and the limiting groove are both adapted to the specification of the limiting block 510. The lower end of the limiting block 510 is inclined, so that the blocking block 511 rotating into the inner side of the installation groove 57 can squeeze the inclined end of the limiting block 510 and squeeze the inclined end of the limiting block 510 into the limiting groove.

[0032] Secondly, the upper end of the vertical rod 58 is U-shaped, the movable block 59 is rotatably connected to the U-shaped end of the vertical rod 58 through a rotating shaft, and a first torsion spring is arranged between the outer side of the movable block 59 and the inner side of the U-shaped end of the vertical rod 58, so that the movable block 59 can rotate on the vertical rod 58 and be reset by the first torsion spring.

[0033] Then, the blocking block 511 is rotatably connected to the inner side of the installation groove 57 through a connecting shaft, and a second torsion spring is arranged between the outer side of the blocking block 511 and the inner side of the installation groove 57, so that the blocking block 511 can rotate in the installation groove 57 through the connecting shaft and be reset by the second torsion spring.

[0034] The working principle of the above embodiments is as follows:

[0035] By directly introducing the slag flushing water into the water passing holes 2 of the plate body 1, when the blast furnace discharges slag, the slag flushing water and the plate body 1 discharge water synchronously. When there is no slag discharge, the slag flushing water is closed, and the plate body 1 also stops supplying water accordingly, realizing intermittent water supply for the plate body 1. While saving water resources, the cooling water directly flows into the slag pool from the water outlet of the plate body 1 after passing through the water channel, and there is no need to construct a separate circulating water channel to maintain the cooling effect of the slag. Since the interlayer 3 is a high-temperature resistant fiber layer containing zirconium, the expansion coefficient of the plate body 1 is reduced, and the durability of the plate body 1 is improved. When connecting two plate bodies 1, the plugging fixing block 51 can be inserted into the connecting block 52. When the vertical rod 58 does not extend into the through hole of the rotating block 55, the blocking block 511 is outside the installation groove 57 under the action of the second torsion spring. Therefore, after the vertical rod 58 and the movable block 59 extend into the through hole of the rotating block 55, the blocking block 511 can be pressed into the installation groove 57, and by pressing the movable block 59, the limiting block 510 is driven to extend into the blocking block 511 to limit the blocking block 511, and the installation connection between two plate bodies 1 can be completed, enabling the length of the plate body 1 to be adjusted according to the slag cooling effect, improving the usability.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel water-cooled guard plate for slag dropping points of blast furnace smelting slag grooves, comprising two plate bodies (1), characterized in that: A water through hole (2) is provided inside the plate body (1), a partition (3) is fixedly connected to the inner side of the water through hole (2), and a connecting piece (5) is provided on the outer side of the plate body (1); The connecting member (5) comprises a fixed block (51) having one end fixedly connected to the outer side of the right side plate body (1); a connecting block (52) is fixedly connected to the outer side of the left side plate body (1); an upper end of the fixed block (51) is fixedly connected to a support rod (54); an upper end of the support rod (54) is rotatably connected to a rotating block (55); a mounting groove (57) is provided on the front side of the rotating block (55); a stopper (511) is rotatably connected to the inner side of the mounting groove (57); an upper end of the connecting block (52) is fixedly connected to a vertical rod (58); an upper end of the vertical rod (58) is rotatably connected to a movable block (59); a limiting block (510) is fixedly connected to the inner side of the movable block (59).

2. A new type of blast furnace smelting slag groove slag falling point water cooling guard plate according to claim 1, characterized in that: Two mounting blocks (4) are fixedly connected to the upper and lower sides of the plate body (1), and mounting holes are provided inside the mounting blocks (4).

3. The novel blast furnace smelting slag groove slag falling point water cooling guard plate according to claim 1 is characterized by: One side of the plate body (1) is provided with an interface (6) whose end is connected to the water hole (2), and the partition layer (3) is a high-temperature resistant fiber layer containing sulfur.

4. The novel blast furnace smelting slag groove slag falling point water cooling guard plate according to claim 1 is characterized by: The connecting block (52) is L-shaped, and a groove (53) is provided at the end of the connecting block (52). The specification of the groove (53) is compatible with the specification of the support rod (54).

5. The novel blast furnace smelting slag groove slag falling point water cooling guard plate according to claim 1 is characterized by: The front surface of the rotating block (55) is provided with a through hole whose end is connected to the mounting groove (57), and the specification of the through hole is matched with the specification of the vertical rod (58).

6. The novel blast furnace smelting slag groove slag falling point water cooling guard plate according to claim 1 is characterized by: The rotating block (55) is provided with a through hole having one end connected to the mounting groove (57); the upper end of the stopper (511) is provided with a limiting groove; the specifications of the through hole and the limiting groove are compatible with the specifications of the limiting block (510); and the lower end of the limiting block (510) is inclined.

7. The novel water-cooled guard plate for slag dropping point of blast furnace smelting slag groove according to claim 1 is characterized by: The upper end of the vertical rod (58) is U-shaped, and the movable block (59) is rotatably connected to the U-shaped end of the vertical rod (58) via a rotating shaft. A first torsion spring is arranged between the outer side of the movable block (59) and the inner side of the U-shaped end of the vertical rod (58).

8. The novel water-cooled guard plate for slag dropping point of blast furnace smelting slag groove according to claim 1 is characterized by: The stopper (511) is rotatably connected to the inner side of the mounting groove (57) via a connecting shaft, and a second torsion spring is provided between the outer side of the stopper (511) and the inner side of the mounting groove (57).

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