Anti-burst slag stopping cone for converter tapping

Abstract

The utility model discloses an anti-explosion slag stopping cone for converter tapping, which comprises a cone body and a sleeve, the bottom surface of the sleeve is integrally communicated with an inner cylinder, the sleeve and the inner cylinder are both positioned inside the cone body, an inner supporting strip is welded on the outer wall of the sleeve, and a capillary branch is welded on the outer wall of the inner supporting strip. The guide rod, the sleeve, the inner cylinder, the inner supporting strips and the capillary branch which are made of tungsten steel are adopted, the inner supporting strips are distributed in the cone at equal angles, the capillary branch extends into the cone to form a pulling effect on the cone, the phenomenon that the cone bursts and cracks in time is avoided, the capillary branch can still pull fragments, the fragments are prevented from being dispersed, and the service life of the cone is prolonged. The whole structure is kept, the stability and safety of the structure are improved, meanwhile, the guide rod, the sleeve, the inner barrel, the inner supporting strip and the capillary branch are resistant to high temperature, the structure is stable and reliable in molten steel, meanwhile, the density is high, the whole body density of the cone is improved, the problem that the cone floats is solved, and the working stability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature metallurgical equipment, in particular to an explosion-proof slag blocking cone for steel tapping from a converter. Background Art

[0002] During the steelmaking process, slag is suspended on the upper part of the molten steel. When the steel is discharged from the converter, after most of the molten steel is discharged, the remaining molten steel will form a large vortex at the steel outlet, causing more slag to flow out from the steel outlet through the vortex, affecting the quality of the molten steel. In order to improve the quality of molten steel and obtain relatively pure molten steel, the prior art uses a slag blocking cone to block slag at the steel outlet of the converter. However, since the body density and strength of the product cannot meet higher standards, the slag blocking cone will float or explode after being added to the converter, and cannot accurately block the steel outlet of the converter, resulting in slag blocking failure. In addition, there is also a slag blocking ball in the prior art, which can be added to the converter steel outlet to block slag. However, because its surface is a spherical surface, the relative area in contact with the steel outlet is small, and it often floats after being added, and the slag blocking success rate is only about 80%. In addition, the slag stopper produced in the prior art has a small groove, a slow steel tapping speed, and the steel outlet is blocked when there is still a lot of molten steel in the converter, which not only wastes resources but also greatly increases the cost of steelmaking.

[0003] After searching, it was found that the publication number is CN213060921U, and the name is a conical slag stopper for steel tapping in a converter. The application proposes that in the existing technology, the connection between the slag stopper cone head and the slag stopper cone rod mostly relies on refractory refractory clay, and the tightness of the connection is poor. After the slag stopper cone is added, the rod often falls off, which affects the guidance of the slag stopper cone and the accurate search for the steel tapping port, and has a great impact on the slag stopper effect. The application adjusts the refractory material ratio and changes the structure to ensure the normal guidance of the product, accurately find the steel tapping port, and improve the product's use stability; the whole set of products is fixed on the slag stopper car and then added to the converter, The molten steel in the converter can be filtered to block the slag and improve the purity of the molten steel. However, in the actual production process, when blocking the slag, the temperature difference changes greatly, and the slag blocking cone cannot complete the slag blocking task. The temperature in the converter is about 1650-1720℃, and the normal operating conditions are harsh. When the delivery vehicle puts the slag blocking cone wrapped with a cast steel cone into a high temperature environment, it often causes the internal cast steel cone and the refractory material to separate and explode, and the cast steel cone is exposed and melted. The slag blocking cone loses its counterweight and floats, and the molten steel flows out of the steel outlet quickly, forming a vortex slag rolling phenomenon. At the same time, most of the structures in this application cannot be reused, and the damage and waste are relatively serious, and further improvements can be made.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] ( 一 ) Technical issues solved

[0006] In view of the deficiencies in the prior art, the utility model provides an anti-explosion slag blocking cone for converter steel tapping, which has the advantages of anti-explosion, stable and reliable structure, and recyclability, thereby solving the problems in the above-mentioned background technology.

[0007] ( 2) Technical solution

[0008] In order to achieve the above advantages of explosion-proof, stable and reliable structure, and recyclability, the specific technical solutions adopted by the utility model are as follows:

[0009] An explosion-proof slag-blocking cone for steel tapping from a converter comprises a cone and a sleeve, wherein the bottom surface of the sleeve is integrally connected with an inner cylinder, and the sleeve and the inner cylinder are both located inside the cone, and an inner support bar is welded to the outer wall of the sleeve, and capillary branches are welded to the outer wall of the inner support bar, and a plurality of inner support bars are distributed at equal angles, and a plurality of capillary branches are densely distributed, a guide rod is threadedly connected to the inside of the sleeve, and a core shaft is inserted through the inside of the guide rod, and a limiting plate is fixedly connected to the outer surface of the core shaft, and a limiting ring is integrally connected to the inner wall of the inner cylinder on one side of the limiting plate.

[0010] Furthermore, the outer surface of the cone is an arc-shaped structure, and a guide groove is opened on the outer surface of the cone, and a plurality of guide grooves are arranged at equal angles along the central axis of the cone.

[0011] Furthermore, the guide groove is staggered with the inner support bar, and the guide groove is located between the top surface and the bottom surface of the cone.

[0012] Furthermore, an outer surface of the bottom of the guide rod is provided with an outer thread, and an inner wall of the sleeve is provided with an inner thread, and the inner thread matches the outer thread.

[0013] Furthermore, the sleeve, inner cylinder, inner support bar, capillary branch and guide rod are all made of tungsten steel, and the capillary branch is a filamentary structure.

[0014] Furthermore, the shape of the inner support bar matches the contour of the cone, and the distance between the inner support bar and the outer wall of the cone is no more than 1 cm.

[0015] Furthermore, the cone is formed by consolidating refractory materials.

[0016] Furthermore, the sleeve, inner cylinder, cone and guide rod are all coaxially arranged.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides an anti-explosion slag blocking cone for converter tapping, which has the following beneficial effects:

[0019] (1) The utility model adopts guide rods, sleeves, inner cylinders, inner support bars and capillary branches made of tungsten steel. The inner support bars are distributed at equal angles inside the cone. The capillary branches extend into the cone to form a pulling effect on the cone to avoid the cone from bursting. In case of cracking, the capillary branches can still hold the fragments to avoid the fragments from dispersing, maintain the overall structure, and improve the stability and safety of the structure. At the same time, the guide rods, sleeves, inner cylinders, inner support bars and capillary branches are resistant to high temperatures and have a stable and reliable structure in molten steel. At the same time, the density is high, which improves the overall density of the cone, avoids the problem of the cone floating, and further improves the stability of the work.

[0020] (2) The utility model adopts a detachable guide rod. The staff can choose guide rods of different lengths according to the situation. The guide rod is threadedly connected to the sleeve for easy installation and disassembly. At the same time, when the cone is damaged, the staff can hammer and crush the cone, and reuse the guide rod, sleeve, inner tube, inner support bar and capillary branch. When reproducing, it is only necessary to reshape the cone in the mold, which can be reused repeatedly with low cost investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the internal structure of the explosion-proof slag blocking cone for converter steel tapping proposed by the utility model;

[0023] Figure 2 It is a schematic diagram of the external structure of the explosion-proof slag blocking cone for converter steel tapping proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the installation of the inner support bar proposed by the utility model;

[0025] Figure 4 It is a structural schematic diagram of the guide rod proposed by the utility model.

[0026] In the figure:

[0027] 1. Cone; 2. Sleeve; 3. Inner cylinder; 4. Inner support bar; 5. Capillary branch; 6. Guide rod; 7. Mandrel; 8. Limiting ring; 9. Limiting plate; 10. Guide groove; 11. Internal thread; 12. External thread. DETAILED DESCRIPTION

[0028] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0029] According to an embodiment of the utility model, an explosion-proof slag blocking cone for converter steel tapping is provided.

[0030] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-4 As shown, according to the embodiment of the utility model, the explosion-proof slag-blocking cone for converter steel tapping includes a cone 1 and a sleeve 2, the bottom surface of the sleeve 2 is integrally connected with the inner cylinder 3, and the sleeve 2 and the inner cylinder 3 are both located inside the cone 1, wherein the sleeve 2, the inner cylinder 3, the cone 1 and the guide rod 6 are coaxially arranged, and the outer wall of the sleeve 2 is welded with an inner support bar 4, the outer wall of the inner support bar 4 is welded with a capillary branch 5, and the inner support bar 4 is distributed at multiple angles, and the capillary branches 5 are densely distributed, wherein the sleeve 2, the inner cylinder 3, the inner support bar 4, the capillary branches 5 and the guide rod 6 are all made of tungsten steel, and the capillary branches 5 are of a filamentous structure, the sleeve 2 is internally threadedly connected with the guide rod 6, and a core shaft 7 is inserted through the inside of the guide rod 6, and the outer surface of the core shaft 7 A limiting plate 9 is fixedly connected, and the inner wall of the inner cylinder 3 is located on one side of the limiting plate 9 and is integrally connected to a limiting ring 8, which is a common structure in this field and is not shown in detail in the figure. The inner support bars 4 are distributed at equal angles inside the cone 1, and the capillary branches 5 extend into the cone 1 to form a pulling effect on the cone 1 to avoid the cone 1 from bursting. In case of cracking, the capillary branches 5 can still hold the fragments to avoid the fragments from dispersing, maintain the overall structure, and improve the stability and safety of the structure. At the same time, the guide rod 6, sleeve 2, inner cylinder 3, inner support bars 4 and capillary branches 5 are resistant to high temperatures, and the structure is stable and reliable in molten steel. At the same time, the density is high, which improves the overall density of the cone 1, avoids the problem of cone 1 floating, and further improves the stability of the work.

[0031] In one embodiment, the outer surface of the cone 1 is an arc-shaped structure, and a guide groove 10 is opened on the outer surface of the cone 1, and multiple guide grooves 10 are arranged at equal angles along the central axis of the cone 1. The guide groove 10 is a common structure in the art and will not be described in detail here.

[0032] In one embodiment, the guide groove 10 and the inner support bar 4 are staggered, and the guide groove 10 is located between the top surface and the bottom surface of the cone 1, and the inner support bar 4 and the guide groove 10 are staggered to avoid mutual influence.

[0033] In one embodiment, an external thread 12 is provided on the outer surface of the bottom of the guide rod 6, and an internal thread 11 is provided on the inner wall of the sleeve 2, and the internal thread 11 cooperates with the external thread 12 to facilitate disassembly and assembly. The staff can choose guide rods 6 of different lengths according to the situation. The guide rod 6 is threadedly connected to the sleeve 2 for easy installation and disassembly. At the same time, when the cone 1 is damaged, the staff can smash the cone 1 with a hammer and reuse the guide rod 6, sleeve 2, inner tube 3, inner support bar 4 and capillary branch 5. When reproducing, it is only necessary to reshape the cone 1 in the mold, which can be reused repeatedly with low cost investment.

[0034] In one embodiment, the shape of the inner support bar 4 matches the contour of the cone 1 , and the distance between the inner support bar 4 and the outer wall of the cone 1 is no more than 1 cm, thereby improving the pulling stability of the capillary branches 5 on the surface material of the cone 1 .

[0035] In one embodiment, the cone 1 is formed by consolidating refractory materials, and the cone 1 is used in conjunction with a forming mold, which is a common production method and will not be described in detail here.

[0036] Working principle:

[0037] The inner support bars 4 are distributed at equal angles inside the cone 1, and the capillary branches 5 extend into the cone 1 to form a pulling effect on the cone 1 to prevent the cone 1 from bursting. In case of cracking, the capillary branches 5 can still hold the fragments to prevent the fragments from dispersing, maintain the overall structure, and improve the stability and safety of the structure. At the same time, the guide rod 6, sleeve 2, inner cylinder 3, inner support bars 4 and capillary branches 5 are resistant to high temperatures, and the structure is stable and reliable in molten steel. At the same time, the density is high, which improves the overall density of the cone 1 and avoids the problem of the cone 1 floating, further improving the stability of the work. At the same time, the staff can choose guide rods 6 of different lengths according to the situation. The guide rod 6 is threadedly connected to the sleeve 2 for easy installation and disassembly. At the same time, when the cone 1 is damaged, the staff can hammer and crush the cone 1 and reuse the guide rod 6, sleeve 2, inner cylinder 3, inner support bars 4 and capillary branches 5. When reproducing, it is only necessary to reshape the cone 1 in the mold, which can be used repeatedly with low cost investment.

[0038] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Anti-explosion slag blocking cone for converter steel tapping, characterized in that: The invention comprises a cone (1) and a sleeve (2), wherein the bottom surface of the sleeve (2) is integrally connected with an inner cylinder (3), and the sleeve (2) and the inner cylinder (3) are both located inside the cone (1), and an inner support bar (4) is welded to the outer wall of the sleeve (2), and a capillary branch (5) is welded to the outer wall of the inner support bar (4), and a plurality of inner support bars (4) are distributed at equal angles, and a plurality of capillary branches (5) are densely distributed, and a guide rod (6) is threadedly connected inside the sleeve (2), and a core shaft (7) is inserted through the inside of the guide rod (6), and a limiting plate (9) is fixedly connected to the outer surface of the core shaft (7), and a limiting ring (8) is integrally connected to the inner wall of the inner cylinder (3) on one side of the limiting plate (9).

2. The explosion-proof slag blocking cone for converter tapping according to claim 1, characterized in that: The outer surface of the cone (1) is an arc-shaped structure, and a guide groove (10) is provided on the outer surface of the cone (1), and a plurality of guide grooves (10) are arranged at equal angles along the central axis of the cone (1).

3. The explosion-proof slag blocking cone for converter tapping according to claim 2, characterized in that: The guide groove (10) and the inner support bar (4) are arranged in a staggered manner, and the guide groove (10) is located between the top surface and the bottom surface of the cone (1).

4. The explosion-proof slag blocking cone for converter tapping according to claim 1, characterized in that: The outer surface of the bottom of the guide rod (6) is provided with an external thread (12), and the inner wall of the sleeve (2) is provided with an internal thread (11), and the internal thread (11) matches the external thread (12).

5. The explosion-proof slag blocking cone for converter tapping according to claim 1, characterized in that: The sleeve (2), the inner cylinder (3), the inner support bar (4), the capillary branch (5) and the guide rod (6) are all made of tungsten steel, and the capillary branch (5) is a filamentous structure.

6. The explosion-proof slag blocking cone for converter tapping according to claim 1, characterized in that: The shape of the inner support bar (4) matches the contour of the cone (1), and the distance between the inner support bar (4) and the outer wall of the cone (1) is no more than 1 cm.

7. The explosion-proof slag blocking cone for converter tapping according to claim 1, characterized in that: The cone (1) is formed by consolidating refractory materials.

8. The explosion-proof slag blocking cone for converter tapping according to claim 1, characterized in that: The sleeve (2), inner cylinder (3), cone (1) and guide rod (6) are all coaxially arranged.

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