Prefabricated nanoceramic cup dam

Abstract

This utility model discloses a prefabricated nano-ceramic cup gate, belonging to the technical field of iron trough gates. The prefabricated nano-ceramic cup gate includes a main iron trough and a prefabricated gate block. The main iron trough contains a slag trough and an installation groove. The prefabricated gate block is installed in the installation groove, and a gate opening is provided at the bottom of the prefabricated gate block. A limiting structure is provided between the installation groove and the prefabricated gate block. The limiting structure is used to limit the movement of the prefabricated gate block. The limiting structure includes a groove formed on the side of the prefabricated gate block and a protrusion fixedly installed on the inner wall of the installation groove. The protrusion matches the groove. This utility model, through the use of the prefabricated gate block, solves the problem of time-consuming repairs after damage to the gate when it is damaged, as is common in existing technologies for separating molten iron and impurities. By setting up a stop block and rounded corners, the direct impact of molten iron and impurities on the edges of the prefabricated gate block can be reduced, increasing the lifespan of the prefabricated gate block and reducing the frequency of replacement.

Description

Technical Field

[0001] This utility model relates to the field of iron trench gate technology, and in particular to a prefabricated nano-ceramic cup gate. Background Technology

[0002] In the tapping area of ​​an ironmaking plant, the main iron trough, as a crucial facility for carrying the molten iron flowing from the blast furnace taphole, directly affects the continuity and stability of blast furnace production. The main iron trough not only carries the flow of high-temperature molten iron but also undertakes the critical task of separating impurities. Specifically, a filter gate is installed at a suitable location within the main iron trough to separate impurities from the molten iron. Because it is located within the main iron trough and is used for filtering impurities, its working environment is relatively harsh, requiring it to withstand continuous erosion and intense scouring from the high-temperature molten iron and impurities.

[0003] During the tapping process in a blast furnace, molten iron and impurities are ejected at high speed from the tapping spout, directly impacting the bottom of the main ditch and flowing turbulently away from the tapping spout. When the slag-iron mixture flows to the filter gate, the gate separates the impurities. Due to their lower density, the impurities float on top of the molten iron, while the molten iron flows out through the opening at the bottom of the gate, thus completing the separation of impurities and molten iron.

[0004] Over time, the gate will suffer some damage to its structure due to the constant erosion of molten iron and impurities. After the gate structure is damaged, it needs to be repaired. In order to reduce the repair time, this utility model proposes a prefabricated nano-ceramic cup gate. Utility Model Content

[0005] The purpose of this invention is to solve the problem of time-consuming repairs after damage to the gate used for separating molten iron and impurities in the prior art, and to propose a prefabricated nano-ceramic cup gate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The prefabricated nano-ceramic cup gate includes a main iron trough and a prefabricated gate block. The main iron trough is provided with a slag trough and an installation trough. The prefabricated gate block is installed in the installation trough and has a gate opening at its bottom.

[0007] Preferably, a limiting structure is provided between the mounting groove and the prefabricated gate block, and the limiting structure is used to limit the movement of the prefabricated gate block.

[0008] Preferably, the limiting structure includes a groove formed on the side of the prefabricated gate block and a protrusion fixedly disposed on the inner wall of the mounting groove, wherein the protrusion matches the groove.

[0009] Preferably, the groove has a triangular cross-section, the protrusion has a trapezoidal cross-section, and the two sides of the protrusion match the two sides of the groove, respectively.

[0010] Preferably, the protrusion has a filling groove, and a lifting ring is fixedly installed on the top of the prefabricated gate block.

[0011] Preferably, a stop block is fixedly provided at the junction of the installation groove and the slag trough, and the stop block has a rounded corner near the slag trough.

[0012] Preferably, the cross-sections of the prefabricated gate block and the mounting groove are both inverted trapezoidal, and the two are matched.

[0013] Preferably, the gate opening has rounded corners at its edge, and the prefabricated gate block has rounded corners at its bottom edge.

[0014] Compared with the prior art, the present invention provides a prefabricated nano-ceramic cup gate, which has the following beneficial effects.

[0015] 1. This utility model solves the problem of time-consuming maintenance of gates that separate molten iron and impurities after damage by using prefabricated gate blocks.

[0016] 2. This utility model, by setting a stop block and rounded corners of the stop block, can reduce the direct impact of molten iron and impurities on the two sides of the prefabricated gate block, improve the service life of the prefabricated gate block, and reduce the number of times the prefabricated gate block needs to be replaced.

[0017] 3. This utility model, by setting rounded corners on the gate block at the gate position, allows molten iron to flow more smoothly when passing through the gate, avoiding the damage to the prefabricated gate block caused by right-angle settings.

[0018] 4. This utility model, through the setting of the limiting structure, can limit the prefabricated gate block. During installation, the prefabricated gate block can be directly placed into the installation position, which improves the replacement efficiency. In addition, the setting of the limiting structure can also improve the sealing performance to a certain extent, preventing molten iron from passing between the prefabricated gate block and the side wall of the installation groove.

[0019] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0022] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0023] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0024] Figure 5 This is a schematic diagram of the prefabricated gate block in this utility model.

[0025] Figure 6 This is a schematic diagram of the main iron trough in this utility model.

[0026] Figure 7 This utility model Figure 6 Enlarged structural diagram at point B.

[0027] In the picture: 1. Main iron trough; 2. Slag trough; 3. Stop block; 4. Precast gate block; 5. Lifting ring; 6. Groove; 7. Gate opening; 8. Rounded corner of stop block; 9. Installation groove; 10. Protrusion; 11. Rounded corner of gate opening; 12. Rounded corner of gate block; 13. Filling groove. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] Please refer to Figures 1-7 The prefabricated nano-ceramic cup gate includes a main iron trough 1 and a prefabricated gate block 4. The main iron trough 1 is provided with a slag trough 2 and an installation trough 9. The prefabricated gate block 4 is installed in the installation trough 9. The bottom of the prefabricated gate block 4 is provided with a gate opening 7.

[0030] In a specific embodiment of this utility model, the main iron trough 1 is mainly used as a channel for the flow of molten iron, and its specific setting adopts existing conventional technology; the upper part of the slag trough 2, with the cooperation of the prefabricated gate block 4, is used to obstruct the flow of impurities and to separate molten iron and impurities. In actual application, a through groove (not shown in the figure) can be opened at the top of the slag trough 2, and it should be noted that the bottom surface of the through groove should not be lower than the molten iron surface to prevent molten iron from flowing out from here, and an impurity flow channel (not shown in the figure) can be connected to it for the flow of impurities, which can adopt existing conventional settings; a slag removal device can also be set at the position of the slag trough 2 for the removal and cleaning of impurities; the upper body of the prefabricated gate block 4 is mainly used to block impurities, and the lower gate 7 is used for the flow of molten iron. Since the density of impurities is relatively small, the impurities will float on the surface of the molten iron. When passing through the prefabricated gate block 4, the impurities are blocked (the impurities can flow out from the above-mentioned through groove or be directly removed by the slag removal device), while the molten iron flows out through the gate 7, completing the separation of molten iron and impurities.

[0031] The precast gate block 4 is made by casting. One of the main raw materials used is nano silicon carbide, which can improve the strength, impact resistance, corrosion resistance and high temperature resistance of the precast gate block 4. It also has a low coefficient of expansion, making it easy to remove and replace later.

[0032] A limiting structure is provided between the mounting groove 9 and the prefabricated gate block 4. The limiting structure is used to limit the prefabricated gate block 4.

[0033] The setting of the limiting structure can restrict the position of the prefabricated gate block 4, improve the stability of the prefabricated gate block 4 during use, and also provide a positioning effect when installing the prefabricated gate block 4 during replacement.

[0034] The limiting structure includes a groove 6 formed on the side of the prefabricated gate block 4 and a protrusion 10 fixedly set on the inner wall of the mounting groove 9, the protrusion 10 matching the groove 6.

[0035] By using the groove 6 and the protrusion 10, the protrusion 10 is located in the groove 6 to achieve the limiting effect, which prevents the prefabricated gate block 4 from moving horizontally and improves its stability. During installation, the prefabricated gate block 4 is directly placed from the top of the mounting groove 9. When placing it, the groove 6 is aligned with the protrusion 10, and then it is placed downwards to complete the installation and positioning of the prefabricated gate block 4, achieving the effect of quick installation.

[0036] The groove 6 has a triangular cross-section, and the protrusion 10 has a trapezoidal cross-section. The two sides of the protrusion 10 match the two sides of the groove 6 respectively. This arrangement allows a triangular gap to be left between the groove 6 and the protrusion 10. After the prefabricated gate block 4 is installed in place, refractory material can be filled into this gap to improve the tight connection between the prefabricated gate block 4 and the mounting groove 9, further improving the stability of the prefabricated gate block 4. In addition, it can further prevent molten iron from flowing between the contact surfaces of the prefabricated gate block 4 and the mounting groove 9, reducing additional erosion of the prefabricated gate block 4.

[0037] The protrusion 10 is provided with a filling groove 13. By providing the filling groove 13, the contact area between the cast material in the triangular gap and the protrusion 10 can be increased, thereby further improving the connection stability.

[0038] A lifting ring 5 is fixedly installed on the top of the precast gate block 4. The lifting ring 5 facilitates the hoisting of the precast gate block 4, and makes it convenient to transport, install and dismantle the precast gate block 4. During transport, the precast gate block 4 can be hoisted onto the transport equipment using hoisting equipment. During installation, hoisting equipment can be used to assist in the installation, reducing the labor intensity during installation. During dismantling, appropriate tools (such as pneumatic picks) are used to loosen the slurry, and then the precast gate block 4 can be hoisted out using hoisting equipment.

[0039] A stop block 3 is fixedly installed at the junction of the mounting groove 9 and the slag trough 2. A stop block rounded corner 8 is provided on the stop block 3 near the slag trough 2. The stop block 3 and the stop block rounded corner 8 can reduce the impact of molten iron and impurities on the two sides of the precast gate block 4 near the edge. At the same time, it can prevent molten iron from impacting the contact surface of the mounting groove 9 and the precast gate block 4, further reducing the possibility of molten iron passing through this area.

[0040] Both the prefabricated gate block 4 and the mounting groove 9 have inverted trapezoidal cross sections, and they are matched. This design facilitates easy installation and removal. During installation, the prefabricated gate block 4 is placed directly from above the mounting groove 9. Because the upper opening of the mounting groove 9 is relatively large and the bottom of the prefabricated gate block 4 is relatively narrow, the placement is not significantly affected. Just make sure to align the groove 6 with the protrusion 10 just before contact. Similarly, during removal, the larger upper opening of the mounting groove 9 and the narrower bottom of the prefabricated gate block 4 result in less friction between the prefabricated gate block 4 and the mounting groove 9 when it is lifted out, making it easier to remove the prefabricated gate block 4.

[0041] A gate fillet 11 is provided at the edge of the gate 7, and a gate fillet 12 is provided at the bottom edge of the prefabricated gate block 4. By providing a gate fillet 11 at the gate 7, it serves as a smooth buffer when molten iron passes through the gate 7, thereby improving the service life of the gate 7. When installing the prefabricated gate block 4, a gate fillet 12 is provided to avoid scratching the mounting groove 9 at the bottom corner of the prefabricated gate block 4, thereby reducing the occurrence of scratches.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A prefabricated nano-ceramic cup gate, characterized in that, It includes a main iron trough (1) and a prefabricated gate block (4). The main iron trough (1) is provided with a slag trough (2) and an installation trough (9). The prefabricated gate block (4) is installed in the installation trough (9). The bottom of the prefabricated gate block (4) is provided with a gate opening (7).

2. The prefabricated nano-ceramic cup gate according to claim 1, characterized in that, A limiting structure is provided between the mounting groove (9) and the prefabricated gate block (4), and the limiting structure is used to limit the prefabricated gate block (4).

3. The prefabricated nano-ceramic cup gate according to claim 2, characterized in that, The limiting structure includes a groove (6) formed on the side of the prefabricated gate block (4) and a protrusion (10) fixedly set on the inner wall of the mounting groove (9), wherein the protrusion (10) matches the groove (6).

4. The prefabricated nano-ceramic cup gate according to claim 3, characterized in that, The groove (6) has a triangular cross-section, and the protrusion (10) has a trapezoidal cross-section. The two sides of the protrusion (10) match the two sides of the groove (6) respectively.

5. The prefabricated nano-ceramic cup gate according to claim 4, characterized in that, A filling groove (13) is provided on the protrusion (10), and a lifting ring (5) is fixedly provided on the top of the prefabricated gate block (4).

6. The prefabricated nano-ceramic cup gate according to claim 1, characterized in that, A stop block (3) is fixedly installed at the junction of the installation groove (9) and the slag trough (2), and a stop block rounded corner (8) is provided on the stop block (3) near the slag trough (2).

7. The prefabricated nano-ceramic cup gate according to claim 1, characterized in that, The cross sections of the prefabricated gate block (4) and the mounting groove (9) are both inverted trapezoidal and are matched.

8. The prefabricated nano-ceramic cup gate according to claim 1, characterized in that, The gate (7) has a gate rounded corner (11) at its edge, and the prefabricated gate block (4) has a gate block rounded corner (12) at its bottom edge.

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