A forming device for a ladle purging plug with a threaded connection structure

Abstract

The utility model belongs to the technical field of mat brick forming device for steel ladle air brick, disclose a kind of mat brick's forming device of threaded connection structure for steel ladle air brick, including circular bottom disc, annular groove is arranged on the coaxial surface of bottom disc, the edge of the bottom disc of the two sides of annular groove is symmetrically equipped with connecting hole, and the middle of bottom disc is equipped with the protruding circular fixing block, fixed block outside connects threaded tube, and threaded hole is arranged in the center position of fixed block, and threaded hole is connected with core screwing;Circular truncated cone sleeve is equipped on the bottom disc, and the bottom of sleeve is arranged in annular groove and is detachably connected with bottom plate;The utility model is simple in structure, convenient to use, solve the problem that traditional mat brick needs to be broken when replacing air brick, reduce resource waste, so that mat brick can be reused, and production cost is saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of molding device for pad bricks for steel ladle permeable bricks, specifically relating to a molding device for pad bricks for steel ladle permeable bricks with a threaded connection structure. Background Technology

[0002] In the secondary refining process of steel smelting, bottom-blowing argon technology in the ladle is a core means to optimize the quality of molten steel, promote the flotation of inclusions, and achieve fine-tuning of composition. This technology relies on a permeable brick system installed in the working lining at the bottom of the ladle. This system typically consists of the permeable brick body, the pad bricks that provide support and connect the gas passages, and the surrounding seat bricks. Among them, the pad bricks, as a key component connecting the upper and lower layers, not only need to withstand the enormous load of the permeable bricks and the molten steel above at temperatures exceeding thousands of degrees Celsius, but also must ensure the absolute sealing of the argon gas delivery channel to prevent high-temperature molten steel leakage and potential safety accidents.

[0003] Currently, the traditional refractory bricks commonly used by steel companies both domestically and internationally are integrally sintered refractory products. Because permeable bricks are in direct contact with molten steel and are subjected to high-temperature airflow, their lifespan is relatively short, requiring periodic replacement. However, the working environment of lining bricks is relatively favorable, and their actual service life is usually much longer than that of permeable bricks. Yet, under current technological conditions, when replacing permeable bricks, operators must use tools such as pneumatic picks and steel chisels to break and remove the lining bricks, whose service life is far from over, fixed beneath them, in order to remove the old permeable bricks and clean the base for installing the new ones. This "destructive" replacement method results in resource waste and increased costs. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, this utility model provides a molding device for a steel ladle permeable brick with a threaded connection structure. The device has a simple structure and is easy to use, making the produced bricks easy to disassemble and install, and realizing the reuse of the bricks.

[0005] The technical solution adopted by this utility model is: a forming device for a pad brick for a steel ladle permeable brick with a threaded connection structure, including a circular base plate, an annular groove is coaxially provided on the upper surface of the base plate, and connecting holes are symmetrically provided on the edges of the base plate on both sides of the annular groove. A protruding circular fixing block is provided in the middle of the base plate, and a threaded tube is connected to the outside of the fixing block. A threaded hole is opened at the center of the fixing block, and the threaded hole is screwed and connected to the core. A frustum-shaped sleeve is provided on the base plate, and the bottom of the sleeve is set in the annular groove and detachably connected to the base plate.

[0006] The outer surface of the fixing block is provided with external threads, and the inside of the threaded tube is provided with internal threads that mate with the external threads of the fixing block.

[0007] The outer wall of the threaded pipe is equipped with fixing rods, and the number of fixing rods is 2-8.

[0008] The core includes a cylindrical block with a circular handle at the top and a cylindrical rod coaxially located at the bottom of the block. The bottom of the cylindrical rod has an external thread, which is screwed into the threaded hole at the center of the fixed block. The threaded hole at the center of the fixed block extends from the top surface of the fixed block to the bottom surface of the chassis. The cylindrical rod passes through the threaded hole and is fixed at the bottom of the chassis by a nut.

[0009] The sleeve is composed of two hollow frustum half-shells forming a frustum shape. The bottom of the frustum half-shell is set in an annular groove. Connecting ears are provided on both the left and right sides of the two frustum half-shells. The connecting ears of the two frustum half-shells are correspondingly set and connected by bolts. The bottom of the two frustum half-shells is provided with a connecting plate. The connecting plate has threaded holes that correspond to the connecting holes on the base plate. The connecting plate is fixedly connected to the base plate by bolts.

[0010] The beneficial effects of this utility model are as follows: This utility model has a simple structure and is easy to use. It solves the problem that traditional base bricks need to be broken when replacing breathable bricks, reduces resource waste, enables base bricks to be reused, and saves production costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the connection structure of the chassis, threaded tube, and core of this utility model; Figure 3 This is a schematic diagram of the core structure of this utility model; Figure 4 This is a schematic diagram of the threaded pipe structure of this utility model; Figure 5 This is a schematic diagram of the chassis structure of this utility model; Figure 6 This is a schematic diagram of the frustum semi-shell structure of this utility model; Figure 7 This is a cross-sectional structural diagram of the pad brick produced by this utility model.

[0012] The markings in the diagram are: 1. Chassis, 11. Groove, 12. Connecting hole, 13. Fixing block; 2. Threaded pipe, 21. Fixing rod; 3. Core, 31. Cylindrical block, 32. Handle, 33. Cylindrical rod; 4. Sleeve, 41. Frustum half-shell, 42. Connecting ear, 43. Connecting plate. Detailed Implementation

[0013] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0014] As shown in the figure, a forming device for a steel-clad permeable brick pad with a threaded connection structure includes a circular base plate 1. An annular groove 11 is coaxially arranged on the upper surface of the base plate 1. Connecting holes 12 are symmetrically arranged on the edges of the base plate 1 on both sides of the annular groove 11. A protruding circular fixing block 13 is arranged in the middle of the base plate 1. The outer surface of the fixing block 13 is provided with external threads. A threaded tube 2 is connected to the outside of the fixing block 13. The threaded tube 2 has internal threads that mate with the external threads of the fixing block 13. Four fixing rods 21 are provided on the outer wall of the threaded tube 2. A threaded hole is opened at the center of the fixing block 13, and the threaded hole is screwed into a core 3. The core 3 includes a cylindrical block 31. An annular handle 32 is provided at the top of the cylindrical block 31. A cylindrical rod 33 is coaxially arranged at the bottom of the cylindrical block 31. 3. The bottom is provided with external threads. The cylindrical rod 33 is screwed into the threaded hole in the center of the fixing block 13 through the external threads. The threaded hole in the center of the fixing block 13 is set through the bottom surface of the fixing block 13 to the bottom surface of the chassis 1. The cylindrical rod 33 passes through the threaded hole and is fixed at the bottom of the chassis 1 by a nut. The chassis 1 is provided with a frustum-shaped sleeve 4. The sleeve 4 is composed of two hollow frustum half shells 41. The bottom of the frustum half shell 41 is set in the annular groove 11. The left and right sides of the two frustum half shells 41 are provided with connecting ears 42. The connecting ears 42 of the two frustum half shells 41 are correspondingly set and connected by bolts. The bottom of the two frustum half shells 41 is provided with a connecting plate 43. The connecting plate 43 is provided with threaded holes and is set with corresponding connecting holes 12 on the chassis 1. The connecting plate 43 is fixedly connected to the base plate by bolts.

[0015] In this molding device for steel-clad permeable bricks with threaded connection structure, the threaded tube 2 is rotated and fitted onto the outside of the fixing block 13. The core 3 is rotated and passed through the threaded hole in the center of the fixing block 13. The core 3 is fixed at the other end of the base plate 1 with a nut. The connecting ears 42 of the two frustum half-shells 41 are fixedly connected with bolts. The sleeve 4 is placed into the groove 11, so that the threaded hole on the connecting plate 43 corresponds to the connecting hole 12 on the base plate 1. The sleeve 4 is fixedly connected to the base plate 1 with bolts. The casting material is poured into the sleeve 4. After the casting material dries, the connecting sleeve is removed. Remove the bolts from the cylinder 4 and the base 1, as well as the bolts connecting the two frustum half-shells 41. Then remove the nuts fixing the core 3, rotate the core 3 using the handle 32 to remove it, and rotate the dried pad brick counterclockwise. The pad brick drives the threaded tube 2 to rotate, causing the threaded tube 2 to separate from the fixing block 13, thus obtaining a pad brick for steel ladle permeable bricks with a threaded connection structure. This utility model has a simple structure and is easy to use. It solves the problem that traditional pad bricks need to be broken when replacing permeable bricks, reduces resource waste, allows the pad bricks to be reused, and saves production costs.

Claims

1. A forming device for a pad brick for a ladle gas permeable plug with a threaded connection structure, comprising a circular base plate (1), characterized in that: The upper surface of the chassis (1) is coaxially provided with an annular groove (11). The edges of the chassis (1) on both sides of the annular groove (11) are symmetrically provided with connecting holes (12). A protruding circular fixing block (13) is provided in the middle of the chassis (1). The fixing block (13) is externally connected to a threaded pipe (2). A threaded hole is opened at the center of the fixing block (13). The threaded hole is screwed into the core (3). A frustum-shaped sleeve (4) is provided on the chassis (1). The bottom of the sleeve (4) is set in the annular groove (11) and is detachably connected to the base plate.

2. The forming apparatus for the ladle shroud brick gasket with a threaded connection structure according to claim 1, characterized in that: The outer surface of the fixing block (13) is provided with an external thread, and the inside of the threaded tube (2) is provided with an internal thread that matches the external thread of the fixing block (13).

3. The forming apparatus for the ladle shroud brick gasket with a threaded connection structure according to claim 1, characterized in that: The outer wall of the threaded pipe (2) is provided with fixing rods (21), and the number of fixing rods (21) is 2-8.

4. The forming apparatus for the ladle shroud brick gasket with a threaded connection structure according to claim 1, characterized in that: The core (3) includes a cylindrical block (31), the top of the cylindrical block (31) is provided with a circular handle (32), the bottom of the cylindrical block (31) is coaxially provided with a cylindrical rod (33), the bottom of the cylindrical rod (33) is provided with an external thread, the cylindrical rod (33) is screwed into the threaded hole in the center of the fixing block (13) through the external thread, the threaded hole in the center of the fixing block (13) is provided through the top surface of the fixing block (13) to the bottom surface of the chassis (1), and the cylindrical rod (33) is fixed at the bottom of the chassis (1) by a nut through the threaded hole.

5. The forming device for the pad brick of the steel ladle permeable brick with threaded connection structure according to claim 1, characterized in that: The sleeve (4) is composed of two hollow frustum half shells (41) forming a frustum shape. The bottom of the frustum half shell (41) is set in an annular groove (11). Connecting ears (42) are provided on both the left and right sides of the two frustum half shells (41). The connecting ears (42) of the two frustum half shells (41) are correspondingly set and connected by bolts. Connecting plates (43) are provided at the bottom of the two frustum half shells (41). Threaded holes are opened on the connecting plates (43) and are correspondingly set with the connecting holes (12) on the base plate (1). The connecting plates (43) are fixedly connected to the base plate by bolts.

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