Converter tapping hole assembly

Abstract

The utility model discloses a converter tapping hole assembly which comprises a tapping hole brick and a tapping hole, the tapping hole replacement brick is arranged at one end of the tapping hole brick; the inner nozzle brick is arranged at one end, far away from the tapping hole brick, of the tapping hole replacement brick, and one end, far away from the tapping hole replacement brick, of the inner nozzle brick is used for being connected with a slag stopping sliding plate; a steel flowing channel is formed among the inner nozzle brick, the steel tapping hole replacement brick and the steel tapping hole brick and used for conveying molten steel. Compared with the prior art, the converter tapping hole assembly provided by the utility model has the advantages that the service life of the tapping hole brick can be prolonged, the frequency of replacing the tapping hole brick of the converter is reduced, and efficient production of the converter is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of smelting equipment, and more specifically, to a converter tapping port assembly. Background Art

[0002] With the rapid development of the steel industry, users have higher and higher requirements for steel quality. Therefore, producing high-quality, high-tech, and high-value-added steel products has become an inevitable choice for steel companies. The quality of molten steel directly affects the quality of steel products. Reducing the amount of slag in the converter process is an important part of improving the quality of molten steel.

[0003] At present, many steel mills use converter slag blocking slides for slag blocking operations. The slag blocking slides are connected to the converter tapping port assembly. The working principle is to adjust the molten steel flow rate of the tapping port assembly by opening and closing the slag blocking slides, control the amount of converter slag entering the ladle, and ensure the quality of molten steel. Although this method has high working efficiency, the service life of the tapping port assembly is low, and the tapping port assembly needs to be replaced frequently, which restricts the efficient production of the converter.

[0004] Therefore, there is an urgent need for a converter taphole assembly that can increase the service life of the taphole bricks, reduce the frequency of replacing the taphole bricks of the converter, and facilitate efficient production of the converter. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a converter taphole assembly, which can increase the service life of the taphole bricks, reduce the frequency of replacing the taphole bricks of the converter, and is conducive to efficient production of the converter.

[0006] The technical solutions provided by this application are as follows:

[0007] A converter tapping port assembly, comprising:

[0008] Steel outlet bricks;

[0009] A steel outlet replacement brick is arranged at the rear end of the steel outlet brick and connected to the steel outlet brick;

[0010] An inner water inlet brick connected to the rear end of the outlet replacement brick, the inner water inlet brick being used to be connected to the slag retaining slide plate;

[0011] A steel flow channel is formed between the inner water inlet brick, the steel outlet replacement brick and the steel outlet brick, and the steel flow channel is used to transport molten steel.

[0012] Preferably, it also includes:

[0013] A first positioning block is arranged on the front end surface of the inner nozzle brick, and the first positioning block extends in the direction of replacing the brick of the steel outlet;

[0014] A first positioning groove is arranged on the rear end surface of the steel outlet replacement brick and is used in conjunction with the first positioning block.

[0015] Preferably, it also includes:

[0016] A second positioning block disposed on the front end surface of the outlet replacement brick, the second positioning block extending in the direction of the outlet brick;

[0017] A second positioning groove is arranged on the rear end surface of the steel outlet brick and is used in conjunction with the second positioning block.

[0018] Preferably, the inner diameters of the inner water inlet brick and the tapping port replacement brick are cylindrical channels, and the inner diameter of the tapping port brick gradually decreases along the direction from the tapping port brick to the tapping port replacement brick, and the inner diameters of the smallest ends of the inner water inlet brick, the tapping port replacement brick and the tapping port brick are equal.

[0019] Preferably, the tap hole brick comprises: a tap hole brick, a tap hole pipe brick and a tap hole tail brick connected in sequence, and the tap hole brick is arranged between the tap hole pipe brick and the tap hole replacement brick;

[0020] A conical channel is formed in the tapping head brick and the tapping head pipe brick, and a trumpet-shaped channel is formed in the tapping head tail brick.

[0021] Preferably, the outer diameter of the tapping head brick is not less than the outer diameters of the tapping head pipe brick and the tapping head tail brick.

[0022] Preferably, the tapping head brick comprises a first section and a second section, wherein the end face of the first section abuts against the tapping head replacement brick, the outer diameters of the first section, the tapping head replacement brick and the inner water inlet brick are equal, and the outer diameter of the second section gradually decreases in the direction away from the tapping head replacement brick.

[0023] Preferably, the inner nozzle bricks, the steel outlet replacement bricks and the outer wall of the first section are covered with steel strips.

[0024] Preferably, it also includes:

[0025] A support frame sleeved in the flow steel channel;

[0026] A baffle fixedly arranged on the support frame, the baffle being used to abut against the front end surface of the steel outlet brick;

[0027] A pressing plate disposed at one end of the support frame away from the baffle, the pressing plate being used to abut against the rear end surface of the inner nozzle brick;

[0028] A locking assembly is used to fix the pressing plate to the supporting frame.

[0029] Preferably, it also includes:

[0030] A filler is arranged between the support frame and the inner wall of the steel flow channel.

[0031] The utility model provides a converter tapping port assembly, which is provided with a tapping port brick, a tapping port replacement brick and an inner water port brick, wherein the tapping port replacement brick is arranged at one end of the tapping port brick, the tapping port replacement brick is connected to the tapping port brick, the inner water port brick is connected to an end of the tapping port replacement brick away from the tapping port brick, the inner water port brick is used to be connected to a slag retaining slide plate, and a steel flow channel is formed among the tapping port brick, the tapping port replacement brick and the inner water port brick, and the steel flow channel is used to transport molten steel. The molten steel moves from one end of the tapping hole brick toward the inner water outlet brick, and the amount of slag is controlled by opening and closing the slag blocking slide. Since the slag blocking slide is frequently impacted by the molten steel, the life of the slag blocking slide is relatively low, which restricts the service life of the tapping hole assembly. The converter tapping hole assembly provided by the embodiment of the utility model is provided with a tapping hole replacement brick and an inner water outlet brick. When the slag blocking slide needs to be replaced, the inner water outlet brick and the tapping hole replacement brick can be replaced without replacing the tapping hole brick, thereby extending the service life of the tapping hole brick, reducing the cost of refractory materials, reducing the frequency of replacing the tapping hole brick, and facilitating efficient production of the converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A structural schematic diagram of a converter steel outlet assembly provided in an embodiment of the utility model (without a support frame);

[0034] Figure 2 A structural schematic diagram of a converter steel outlet assembly provided in an embodiment of the utility model (with a support frame);

[0035] Figure 3 A schematic diagram of the structure of the inner nozzle brick provided in the embodiment of the utility model;

[0036] Figure 4 A structural schematic diagram of replacing bricks at a steel outlet provided by an embodiment of the utility model;

[0037] Figure 5 A schematic structural diagram of a steel tapping head brick provided in an embodiment of the utility model.

[0038] Figure numerals: 1. tapping port brick; 2. tapping port replacement brick; 3. inner water inlet brick; 4. steel belt; 5. support frame; 6. baffle; 7. pressure plate; 8. locking assembly; 9. filling material; 11. second positioning groove; 12. tapping port head brick; 13. tapping port pipe brick; 14. tapping port tail brick; 21. first positioning groove; 22. second positioning block; 31. first positioning block. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0043] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of this application. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0044] The embodiments of the present invention are written in a progressive manner.

[0045] like Figures 1 to 5 As shown, an embodiment of the utility model provides a converter steel outlet assembly, comprising: a steel outlet brick 1; a steel outlet replacement brick 2 arranged at one end of the steel outlet brick 1; an inner water outlet brick 3 arranged at the end of the steel outlet replacement brick 2 away from the steel outlet brick 1, and the end of the inner water outlet brick 3 away from the steel outlet replacement brick 2 is used to be connected to the slag blocking slide plate; a steel flow channel is formed between the inner water outlet brick 3, the steel outlet replacement brick 2 and the steel outlet brick 1, and the steel flow channel is used to transport molten steel.

[0046] The converter tapping hole assembly in the prior art generally includes a tapping hole brick, an inner nozzle brick and a steel pipe rack. The tapping hole brick and the inner nozzle brick are produced separately and then assembled into a whole, and fixed by a steel pipe rack. Among them, a steel flow channel is formed inside the tapping hole brick and the inner nozzle brick. Molten steel flows from one end of the tapping hole brick to one end of the inner nozzle brick. In order to reduce inclusions in the steel and improve the cleanliness of the molten steel, a slag blocking slide is provided at the outlet end of the steel flow channel. The slag blocking slide is fixedly connected to the inner nozzle brick. However, due to the low service life of the tapping hole during the steel tapping process, the efficient production of the converter is restricted.

[0047] It should be noted that the flow of molten steel in the steel flow channel enters from one end of the steel outlet brick and flows out from the direction of the inner water outlet brick. The front end and the rear end in the embodiment of the utility model are in the same direction as the flow of molten steel. The steel outlet brick is arranged at the front end of the steel flow channel, and the inner water outlet brick is arranged at the rear end of the steel flow channel.

[0048] The utility model provides a converter tapping port assembly, which is provided with a tapping port brick 1, a tapping port replacement brick 2 and an inner water port brick 3, wherein the tapping port replacement brick 2 is arranged at one end of the tapping port brick 1, the tapping port replacement brick 2 is connected to the tapping port brick 1, the inner water port brick 3 is connected to the end of the tapping port replacement brick 2 away from the tapping port brick 1, the inner water port brick 3 is used to be connected to a slag retaining slide plate, and a steel flow channel is formed among the tapping port brick 1, the tapping port replacement brick 2 and the inner water port brick 3, and the steel flow channel is used to transport molten steel. The molten steel moves from one end of the steel outlet brick 1 toward the inner water outlet brick 3, and the amount of slag is controlled by opening and closing the slag blocking slide. Since the slag blocking slide is frequently impacted by the molten steel, the service life of the slag blocking slide is relatively low, and the slag blocking slide needs to be replaced frequently. Frequent replacement of the slag blocking slide will inevitably damage the end face of the inner water outlet brick 3, resulting in the need to replace the inner water outlet brick 3 multiple times. Multiple replacements of the inner water outlet brick 3 will inevitably damage the end face of the steel outlet brick 1, thereby restricting the service life of the steel outlet assembly.

[0049] The converter tapping port assembly provided by the embodiment of the utility model is provided with a tapping port replacement brick 2 and an inner water outlet brick 3. When the slag retaining slide plate needs to be replaced, the inner water outlet brick 3 and the tapping port replacement brick 2 can be replaced multiple times without replacing the tapping port brick 1, thereby extending the service life of the tapping port brick 1, reducing the refractory cost, reducing the frequency of replacing the tapping port brick, and facilitating efficient production of the converter.

[0050] In the present application, since a steel outlet replacement brick 2 is provided, when the slag retaining slide plate is working, after the contact surface between the steel outlet replacement brick 2 and the inner water outlet brick 3 is eroded by molten steel and damaged by fire mud cleaning, the steel outlet replacement brick 2 and the inner water outlet brick 3 can be replaced, thereby avoiding the replacement of the steel outlet brick 1 and further extending the service life of the steel outlet brick 1.

[0051] Specifically, the inner water inlet brick 3, the steel outlet brick 1 and the steel outlet replacement brick 2 in the embodiment of the utility model are manufactured separately, and the inner water inlet brick 3, the steel outlet brick 1 and the steel outlet replacement brick 2 are fixedly connected into one body by an adhesive. When the inner water inlet brick 3 and the steel outlet replacement brick 2 need to be replaced, the inner water inlet brick 3 and the steel outlet replacement brick 2 are pried off for replacement, thereby improving the service life of the steel outlet brick 1. The inner water inlet brick 3 and the steel outlet replacement brick 2 in the original converter steel outlet assembly, and the steel outlet replacement brick 2 and the steel outlet brick 1 are bonded with epoxy resin combined with magnesium powder, and the inner water inlet brick 3 and the steel outlet replacement brick 2 that are replaced later are bonded with green fire mud.

[0052] Furthermore, the inner nozzle brick 3 and the tapping hole replacement brick 2 can be disassembled and replaced multiple times to extend the service life of the tapping hole brick 1.

[0053] In the above structure, the steel outlet replacement brick 2 is arranged between the inner water outlet brick 3 and the steel outlet brick 1. As one of the specific implementation methods, the converter steel outlet assembly in the embodiment of the utility model also includes a first positioning block 31 and a first positioning groove 21, wherein the first positioning block 31 is arranged at the front end of the inner water outlet brick 3, and the first positioning block 31 extends in the direction of the steel outlet replacement brick 2, and the first positioning groove 21 is arranged on the rear end surface of the steel outlet replacement brick 2. The first positioning groove 21 is used in conjunction with the first positioning block 31, and the inner water outlet brick 3 and the steel outlet replacement brick 2 are fixed by an adhesive.

[0054] Furthermore, as one of the ways, the converter steel outlet assembly in the embodiment of the utility model also includes a second positioning block 22 and a second positioning groove 11, wherein the second positioning block 22 is arranged at the front end of the steel outlet replacement brick 2, and the second positioning block 22 extends in the direction of the steel outlet brick 1, and the second positioning groove 11 is arranged on the rear end surface of the steel outlet brick 1, and the second positioning groove 11 is used in conjunction with the second positioning block 22, and the steel outlet brick 1 and the steel outlet replacement brick 2 are fixed by an adhesive.

[0055] Furthermore, in the embodiment of the utility model, the contact area between the first positioning block 31 and the first positioning groove 21, and the contact area between the second positioning block 22 and the second positioning groove 11 are as large as possible to obtain a larger effective contact area and facilitate the cleaning of the fire mud.

[0056] In the above structure, as one of the implementation modes, the inner diameters of the inner water inlet brick 3 and the outlet replacement brick 2 in the embodiment of the utility model are specifically cylindrical, and the inner diameter of the outlet brick 1 gradually decreases along the direction from the outlet to the outlet replacement brick 2, and the inner diameters of the inner water inlet brick 3, the outlet replacement brick 2 and the smallest end of the outlet brick 1 are equal. The inner diameter of the molten steel inlet of the steel flow channel is large, and the inner diameter of the outlet is small, so that the molten steel flows out at a higher pressure and speed, shortening the time of converter steel tapping and improving steelmaking efficiency.

[0057] Furthermore, as one of the implementation modes, the tapping mouth brick 1 in the embodiment of the utility model includes a tapping mouth brick 12, a tapping mouth pipe brick 13 and a tapping mouth tail brick 14 which are connected in sequence, wherein the tapping mouth brick 12 is arranged between the tapping mouth pipe brick 13 and the tapping mouth replacement brick 2, a conical channel is formed in the tapping mouth brick 12 and the tapping mouth pipe brick 13, and a trumpet-shaped channel is formed in the tapping mouth pipe tail brick 14.

[0058] In the above structure, the tapping head brick 12 and the tapping head pipe brick 13, the tapping head pipe brick 13 and the tapping head tail brick 14, and the adjacent tapping head pipe bricks 13 are connected by any one of plane connection, conical connection or mother-and-child matching connection.

[0059] In the above structure, the tapping head bricks 12 and the tapping pipe bricks 13, the tapping pipe bricks 13 and the tapping tail bricks 14, and the adjacent tapping pipe bricks 13 are bonded together by adhesive. The adhesive is preferably epoxy resin combined with magnesium powder.

[0060] Specifically, the inner diameter of the end of the tapping head brick 12 close to the tapping head replacement brick 2 is D1, the tapping head brick 12 and the tapping head pipe brick 13 form a conical channel, the inner diameter of the end of the tapping head pipe brick 13 connected to the tapping head tail brick 14 is increased to D2, a trumpet-shaped channel is formed in the tapping head tail brick 14, and the inner diameter of the tapping head tail brick 14 is increased to D3 at maximum, wherein D1 is smaller than D2 and D2 is smaller than D3.

[0061] Furthermore, the outer diameter of the tapping head brick 12 in the embodiment of the utility model is not less than the outer diameters of the tapping head pipe brick 13 and the tapping head tail brick 14 .

[0062] Furthermore, as one of the implementation modes, the outer diameters of the inner water inlet brick 3 and the steel outlet replacement brick 2 in the embodiment of the utility model are equal, and the outer diameters of the inner water inlet brick 3 and the steel outlet replacement brick 2 are not less than the maximum outer diameter of the steel outlet brick 1. In this way, the wall thickness of the inner water inlet brick 3 and the steel outlet replacement brick 2 forming the cylindrical channel improves the scouring ability and service life of the molten steel.

[0063] In the above structure, as one specific implementation, at least two outlet pipe bricks 13 are provided in the embodiment of the utility model, and are arranged in sequence along the direction of molten steel flow. The outlet steel pipe bricks are preferably arranged in 5 to 8 sections.

[0064] In the above structure, as one of the embodiments, the tapping head brick 12 in the embodiment of the utility model includes a first section and a second section, wherein the end face of the first section abuts against the tapping head replacement brick 2, the first section, the tapping head replacement brick 2 and the inner water inlet brick 3 have the same outer diameter, and the outer diameter of the second section gradually decreases in the direction away from the first section. The first section is used to connect with the tapping head replacement brick 2, and the second section is used to connect with the tapping head pipe brick 13.

[0065] In the above structure, as one of the embodiments, the outer side of the inner water inlet brick 3, the steel outlet replacement brick 2 and the first section of the steel outlet brick 12 in the embodiment of the utility model is covered with a steel belt 4. The steel belt 4 plays a tightening role. It can improve the stability and durability of the cylindrical channel and extend the service life of the converter steel outlet assembly.

[0066] Furthermore, at least one steel belt 4 is arranged on the outer side of the inner water inlet brick 3, the outlet replacement brick 2 and the first section.

[0067] In the above structure, as one of the implementation modes, the converter steel outlet assembly in the embodiment of the utility model also includes: a support frame 5, a baffle 6, a pressure plate 7 and a locking assembly 8, wherein the support frame 5 is mounted in the steel flow channel, and the support frame 5 is used to support the steel outlet brick 1, the steel outlet replacement brick 2 and the inner water outlet brick 3, the baffle 6 is fixedly arranged at the front end of the support frame 5, the baffle 6 abuts against the front end of the steel outlet brick 1, the pressure plate 7 is arranged at one end of the support frame 5 away from the baffle 6, the pressure plate 7 abuts against the rear end face of the inner water outlet brick 3, and the locking assembly 8 is used to lock the pressure plate 7 and the support frame 5.

[0068] In the above structure, as one implementation mode, the outer diameter of the pressing plate 7 in the embodiment of the utility model is not greater than the outer diameter of the inner nozzle brick 3 , and a positioning groove used in conjunction with the pressing plate 7 is provided on the inner nozzle brick 3 .

[0069] Furthermore, the locking assembly 8 in the embodiment of the utility model includes a locking screw and a locking nut, a locking hole is provided on the pressing plate 7, the locking screw passes through the locking hole and is connected to the support frame 5 and is locked by the locking nut, and the locking nut is arranged on the side of the pressing plate 7 away from the inner nozzle brick 3. Furthermore, as one of the implementation modes, the converter tapping port assembly in the embodiment of the utility model also includes a filler 9 arranged between the support frame 5 and the inner wall of the circulation channel, so as to support the tapping port brick 1.

[0070] Furthermore, the support frame 5 in the embodiment of the utility model includes a round tube and a flange, and the flange is provided with a threaded hole, and the threaded hole is used to be connected to the locking screw.

[0071] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A converter tapping port assembly, characterized in that: include: Steel outlet brick (1); A steel outlet replacement brick (2) is arranged at the rear end of the steel outlet brick (1) and is connected to the steel outlet brick (1); An inner water inlet brick (3) connected to the rear end of the outlet replacement brick (2), wherein the inner water inlet brick (3) is used to be connected to the slag retaining slide plate; A steel flow channel is formed between the inner water inlet brick (3), the steel outlet replacement brick (2) and the steel outlet brick (1), and the steel flow channel is used to transport molten steel.

2. The converter tapping port assembly according to claim 1, characterized in that: Also includes: A first positioning block (31) is arranged on the front end surface of the inner nozzle brick (3), and the first positioning block (31) extends in the direction of the outlet replacement brick (2); A first positioning groove (21) is provided on the rear end surface of the steel outlet replacement brick (2) and is used in conjunction with the first positioning block (31).

3. The converter tapping port assembly according to claim 2, characterized in that: Also includes: A second positioning block (22) is arranged on the front end surface of the steel outlet replacement brick (2), and the second positioning block (22) extends in the direction of the steel outlet brick (1); A second positioning groove (11) is provided on the rear end surface of the steel outlet brick (1) and is used in conjunction with the second positioning block (22).

4. The converter tapping port assembly according to any one of claims 1 to 3, characterized in that: The inner diameters of the inner water inlet brick (3) and the outlet replacement brick (2) are cylindrical channels. Along the direction from the outlet brick (1) to the outlet replacement brick (2), the inner diameter of the outlet brick (1) gradually decreases. The inner diameters of the smallest ends of the inner water inlet brick (3), the outlet replacement brick (2) and the outlet brick (1) are equal.

5. The converter tapping port assembly according to claim 4, characterized in that: The tap hole brick (1) comprises: a tap hole brick (12), a tap hole pipe brick (13) and a tap hole tail brick (14) connected in sequence, wherein the tap hole brick (12) is arranged between the tap hole pipe brick (13) and the tap hole replacement brick (2); The tapping head brick (12) and the tapping head pipe brick (13) form a conical channel, and the tapping head tail brick (14) forms a trumpet-shaped channel.

6. The converter tapping port assembly according to claim 5, characterized in that: The outer diameter of the tapping head brick (12) is not less than the outer diameters of the tapping head pipe brick (13) and the tapping head tail brick (14).

7. The converter tapping port assembly according to claim 6, characterized in that: The tapping head brick (12) comprises a first section and a second section, wherein the end face of the first section abuts against the tapping head replacement brick (2), the first section, the tapping head replacement brick (2) and the inner water inlet brick (3) have the same outer diameters, and the outer diameter of the second section gradually decreases in the direction away from the tapping head replacement brick (2).

8. The converter tapping port assembly according to claim 7, characterized in that: The inner water inlet brick (3), the steel outlet replacement brick (2) and the outer wall of the first section are covered with a steel belt (4).

9. The converter tapping hole assembly according to any one of claims 1 to 3 and 5 to 8, characterized in that: Also includes: A support frame (5) sleeved in the steel flow channel; a baffle (6) fixedly arranged on the support frame (5), the baffle (6) being used to abut against the front end surface of the steel outlet brick (1); A pressing plate (7) is arranged at one end of the support frame (5) away from the baffle (6), and the pressing plate (7) is used to abut against the rear end surface of the inner nozzle brick (3); A locking assembly (8) for fixing the pressing plate (7) to the supporting frame (5).

10. The converter tapping hole assembly according to claim 9, characterized in that: Also includes: A filling material (9) is arranged between the support frame (5) and the inner wall of the steel flow channel.

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