Wear-resistant and high-temperature-resistant blast furnace tapping channel

Abstract

The utility model relates to a wear-resistant and high-temperature-resistant blast furnace tapping channel which comprises a tapping channel main body, an inner channel body is arranged in the tapping channel main body, an erosion-resistant coating is arranged on the inner channel body, a concave reinforcing shell is arranged on the outer side of the tapping channel main body, and opening grooves are formed in the two sides of the tapping channel main body respectively. Open holes corresponding to the open grooves are formed in the two sides of the reinforcing shell respectively, detachable cooling blocks are arranged in the open grooves, a plurality of penetrating holes are formed in the cooling blocks, cooling pipes are arranged in the penetrating holes in a penetrating mode, and connectors are arranged at the two ends of each cooling pipe respectively. Water is fed through one communicating pipe, water is discharged through the other corresponding communicating pipe, water flows in the cooling pipe through the connecting box and the connector, heat exchange can be conducted on the high-temperature cooling block and the tapping channel body, and therefore the effects of heating the water in the cooling pipe and cooling the cooling block and the tapping channel body are achieved, the temperature of the device is effectively reduced, and the service life of the device is prolonged. And an erosion-resistant effect is achieved to a certain extent.

Description

Technical Field

[0001] This utility model relates to blast furnace tapping trough technology, and in particular to a wear-resistant and high-temperature resistant blast furnace tapping trough. Background Technology

[0002] The blast furnace tapping trough is one of the areas in blast furnace production where refractory materials are consumed in large quantities. When tapping iron, about 4 to 7.5 tons of slag-containing molten iron pass through the trough every minute, with the tapping temperature reaching 1450°C. Each tapping session lasts 70 to 120 minutes. Under the periodic scouring and corrosion of the molten iron at high temperatures, the lining of the tapping trough is eroded, affecting the normal operation of the blast furnace.

[0003] The corrosion resistance of the tapping trough in the existing technology mainly relies on natural cooling or flushing with coolant. Although this reduces the temperature of the tapping trough, it not only wastes resources but also fails to effectively increase the service life of the tapping trough, which will affect the normal operation of the blast furnace and has certain limitations. Utility Model Content

[0004] The purpose of this invention is to provide a wear-resistant and high-temperature resistant blast furnace tapping trough, which solves the problem that the cooling methods relied upon for corrosion resistance of existing tapping troughs have certain limitations.

[0005] To address the aforementioned problems, this utility model provides a wear-resistant and high-temperature resistant blast furnace tapping trough, comprising a tapping trough body, an inner trough body with an corrosion-resistant coating, a concave reinforcing shell on the outer side of the tapping trough body, opening slots on both sides of the tapping trough body, and openings corresponding to the opening slots on both sides of the reinforcing shell. A detachable cooling block is provided in the opening slot, and multiple through holes are provided in the cooling block. Cooling pipes are inserted through the through holes, and connectors are provided at both ends of the cooling pipes. Multiple connectors on the same side are fixedly connected to a connecting box, and a connecting pipe is threaded to one side of the connecting box.

[0006] The wear-resistant and high-temperature resistant blast furnace tapping trough provided by this utility model also has the following technical features:

[0007] Furthermore, the cooling block has clearance grooves on both sides, and the connector, connecting box and connecting pipe are all located in the clearance grooves. One end of the connecting pipe can extend out of the clearance groove.

[0008] Furthermore, the connector includes a connecting pipe and a screw cap. One end of the connecting pipe can be inserted into the corresponding cooling pipe, and the other end of the connecting pipe is fixedly connected to the connecting box. The screw cap is fitted onto the connecting pipe and is threadedly connected to one end of the corresponding cooling pipe. A step is provided on one side of the screw cap, and a convex ring is provided on the cooling pipe. One side of the step can abut against the convex ring, and a sealing ring is fixed on the other side of the convex ring. One side of the sealing ring abuts against one side of the cooling pipe.

[0009] Furthermore, the front and rear sides of the main body of the iron trench are respectively provided with reinforcing plates, and the edges of the reinforcing plates are connected to the reinforcing shell by bolts.

[0010] Furthermore, a limiting plate is provided on the outer side of the reinforced shell, and the two ends of the limiting plate are respectively connected to the corresponding reinforced plate by bolts.

[0011] Furthermore, one side of the limiting plate contacts the corresponding cooling block, and one end of the connecting pipe passes through the corresponding limiting plate.

[0012] This utility model has the following beneficial effects: Water enters through one connecting pipe and exits through the other corresponding connecting pipe. The water flows through the connecting box and the joint in the cooling pipe, which can exchange heat between the high-temperature cooling block and the main body of the iron tapping trough. This heats the water in the cooling pipe and cools the cooling block and the main body of the iron tapping trough, thereby effectively reducing the temperature of the device and providing a certain degree of corrosion resistance. The heated water can be used for other purposes, avoiding waste of resources. The corrosion-resistant coating also provides a certain degree of corrosion resistance. Due to the separate design of the cooling block and the main body of the iron tapping trough, the cooling block can be disassembled, making it easy to disassemble and clean the cooling pipe. Attached Figure Description

[0013] Figure 1 This is an isometric view of an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the iron trough body, inner trough body, and reinforcing shell in an embodiment of this utility model;

[0015] Figure 3 This is a right sectional view of an embodiment of the present invention;

[0016] Figure 4 This is a schematic diagram of the structure of the cooling pipe, connector, and connecting box in the embodiment of this utility model. Detailed Implementation

[0017] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0018] like Figures 1 to 4In the embodiment of the wear-resistant and high-temperature resistant blast furnace tapping trough of this utility model shown, the wear-resistant and high-temperature resistant blast furnace tapping trough includes a tapping trough body 1. The tapping trough body 1 has an inner trough body 2 inside, with an anti-corrosion coating on the inner trough body 2. A concave reinforcing shell 3 is provided on the outer side of the tapping trough body 1. Opening slots 4 are provided on both sides of the tapping trough body 1. Openings corresponding to the opening slots 4 are provided on both sides of the reinforcing shell 3. A detachable cooling block 5 is provided inside the opening slot 4. Multiple through holes are provided inside the cooling block 5, and cooling pipes 6 pass through the through holes. Connectors 7 are provided at both ends of the cooling pipes 6. Multiple connectors 7 on the same side are fixedly connected to a connecting box 8. A connecting pipe 9 is threadedly connected to one side of the connecting box 8. Through one of the connecting pipes 9, [the material enters / enters the furnace]. Water flows through the connecting box 8 and the connector 7 into the cooling pipe 6, which can exchange heat between the high-temperature cooling block 5 and the main body 1 of the iron tapping trough. This heats the water in the cooling pipe 6 and cools the cooling block 5 and the main body 1 of the iron tapping trough, thus effectively reducing the temperature of the device and providing some degree of corrosion resistance. The heated water can be used for other purposes, avoiding waste of resources. The corrosion-resistant coating also provides some corrosion resistance. Because the cooling block 5 and the main body 1 of the iron tapping trough are separate, the cooling block 5 can be disassembled, making it easy to disassemble and clean the cooling pipe 6. The cooling block 5 and the main body 1 of the iron tapping trough can be castable, ramming material, or other suitable refractory materials for iron troughs.

[0019] In one embodiment of this application, preferably, the cooling block 5 has relief grooves 10 on both sides, and the connector 7, connecting box 8 and connecting pipe 9 are all located in the relief grooves 10. One end of the connecting pipe 9 can extend out of the relief groove 10, which facilitates the limiting of the connecting pipe 9 and provides a placement position for the connector 7, connecting box 8 and connecting pipe 9, making it easy to disassemble the connector 7, connecting box 8 and connecting pipe 9.

[0020] In one embodiment of this application, preferably, the connector 7 includes a connecting pipe 71 and a screw cap 72. One end of the connecting pipe 71 can be inserted into the corresponding cooling pipe 6, and the other end of the connecting pipe 71 is fixedly connected to the connecting box 8. The screw cap 72 is fitted onto the connecting pipe 71 and is threadedly connected to one end of the corresponding cooling pipe 6. A step is provided on one side of the screw cap 72, and a convex ring is provided on the cooling pipe 6. One side of the step can abut against the convex ring, and a sealing ring 11 is fixed on the other side of the convex ring. One side of the sealing ring 11 abuts against one side of the cooling pipe 6. The connecting pipe 9 can be easily disassembled from the connecting box 8 by rotating the connecting pipe 9. The screw cap 72 can be separated from the cooling pipe 6 by rotating the screw cap 72, thereby facilitating the disassembly of the connector 7 from the cooling pipe 6 and making it easier to remove the cooling pipe 6 for cleaning.

[0021] In one embodiment of this application, preferably, the front and rear sides of the main body 1 of the iron trench are respectively provided with reinforcing plates 12, and the edges of the reinforcing plates 12 are connected to the reinforcing shell 3 by bolts. The stability of the structure can be enhanced by the setting of the reinforcing plates 12 and the reinforcing shell 3.

[0022] In one embodiment of this application, preferably, a limiting plate 13 is provided on the outer side of the reinforcing shell 3, and the two ends of the limiting plate 13 are respectively connected to the corresponding reinforcing plate 12 by bolts. The limiting plate 13 serves to further fix the position of the reinforcing plate 12.

[0023] In one embodiment of this application, preferably, one side of the limiting plate 13 contacts the corresponding cooling block 5, and one end of the connecting pipe 9 passes through the corresponding limiting plate 13, so that the limiting plate 13 can limit and fix the cooling block 5.

[0024] In use, the cooling pipe 6 is installed inside the cooling block 5. The connector 7, connecting box 8, and connecting pipe 9 are installed, and then the cooling block 5 is placed in the open slot 4. Water enters through one of the connecting pipes 9 and exits through the other corresponding connecting pipe 9. The water flows through the connecting box 8 and connector 7 within the cooling pipe 6, which can exchange heat between the high-temperature cooling block 5 and the main body 1 of the iron tapping trough. This heats the water in the cooling pipe 6 and cools the cooling block 5 and the main body 1 of the iron tapping trough, effectively reducing the temperature of the device and providing a certain degree of corrosion resistance. The heated water can be used for other purposes, avoiding waste of resources. The corrosion-resistant coating also provides a certain degree of corrosion resistance. Due to the separate design of the cooling block 5 and the main body 1 of the iron tapping trough, the cooling block 5 can be disassembled. By rotating the connecting pipe 9, the connecting pipe 9 can be easily disassembled from the connecting box 8. By rotating the screw cap 72, the screw cap 72 can be separated from the cooling pipe 6, making it easy to disassemble the connector 7 from the cooling pipe 6 and thus easy to remove the cooling pipe 6 for cleaning.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wear-resistant and high-temperature resistant blast furnace tapping trough, comprising a tapping trough body (1), characterized in that, The main body (1) of the iron discharge trough is provided with an inner trough body (2), and the inner trough body (2) is provided with an corrosion-resistant coating. The main body (1) of the iron discharge trough is provided with a concave reinforcing shell (3) on the outside. The main body (1) of the iron discharge trough is provided with an opening groove (4) on both sides. The reinforcing shell (3) is provided with an opening corresponding to the opening groove (4) on both sides. The opening groove (4) is provided with a detachable cooling block (5). The cooling block (5) is provided with multiple through holes. The through holes are provided with a cooling pipe (6). The two ends of the cooling pipe (6) are provided with connectors (7). The multiple connectors (7) on the same side are fixedly connected to a connecting box (8). The connecting box (8) is threadedly connected to a connecting pipe (9) on one side.

2. The wear-resistant and high-temperature resistant blast furnace tapping trough according to claim 1, characterized in that: The cooling block (5) has clearance grooves (10) on both sides. The connector (7), the connecting box (8) and the connecting pipe (9) are all located in the clearance grooves (10). One end of the connecting pipe (9) can extend out of the clearance grooves (10).

3. The wear-resistant and high-temperature resistant blast furnace tapping trough according to claim 2, characterized in that: The connector (7) includes a connecting pipe (71) and a screw cap (72). One end of the connecting pipe (71) can be inserted into the corresponding cooling pipe (6). The other end of the connecting pipe (71) is fixedly connected to the connecting box (8). The screw cap (72) is fitted on the connecting pipe (71). The screw cap (72) is threadedly connected to one end of the corresponding cooling pipe (6). A step is provided on one side of the screw cap (72). A convex ring is provided on the cooling pipe (6). One side of the step can abut against the convex ring. A sealing ring (11) is fixed on the other side of the convex ring. One side of the sealing ring (11) abuts against one side of the cooling pipe (6).

4. The wear-resistant and high-temperature resistant blast furnace tapping trough according to claim 1, characterized in that: The front and rear sides of the main body (1) of the iron trench are respectively provided with reinforcing plates (12), and the edges of the reinforcing plates (12) are connected to the reinforcing shell (3) by bolts.

5. The wear-resistant and high-temperature resistant blast furnace tapping trough according to claim 4, characterized in that: The outer side of the reinforced shell (3) is provided with a limiting plate (13), and the two ends of the limiting plate (13) are respectively connected to the corresponding reinforcing plate (12) by bolts.

6. The wear-resistant and high-temperature resistant blast furnace tapping trough according to claim 5, characterized in that: One side of the limiting plate (13) is in contact with the corresponding cooling block (5), and one end of the connecting pipe (9) passes through the corresponding limiting plate (13).

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