A tundish steel pouring flow stabilizing device

Abstract

The present application relates to a kind of intermediate ladle steel water pouring flow stabilizer, comprising: movable lap in the closed top cover of the top surface of intermediate ladle steel water pouring platform.The raised support strip of fixed connection in the bottom outer surface of intermediate ladle steel water pouring platform.The top inner wall surface of the closed top cover is fixedly installed with accumulation liquid speed reduction unit, and the accumulation liquid speed reduction unit includes arc lap plate and guide chute.The present application cooperates with the liquid inlet hole on the top surface of closed top cover and limiting sleeve shell, and the molten steel is guided into the inside of intermediate ladle steel water pouring platform, and when the molten steel is infused into the inside of limiting sleeve shell, cooperate with the arc of the arc lap plate outer surface to accumulate the molten steel descending, then the molten steel is guided down using the gap between the two arc lap plates, since liquid inlet quantity is greater than liquid outlet quantity, the molten steel will be preferentially accumulated in the arc lap plate outer surface, and the molten steel in low place will flow under the top gravity.

Description

Technical Field

[0001] This invention relates to the field of stabilizing the flow of molten steel during pouring, and in particular to a device for stabilizing the flow of molten steel during pouring in an tundish. Background Technology

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives molten steel poured from the ladle, and then distributes it to various crystallizers through the tundish nozzle. As a crucial basic raw material, steel plays a vital role in the economic development of countries worldwide.

[0003] In the prior art, patent document CN112170824A discloses an intermediate ladle for steel casting, comprising a ladle body. The ladle body contains, in sequence, an inner liner, an inlet, an outlet, a top cover, an I-shaped stopper, an anti-collision mechanism, and a first filtration mechanism. The inner liner is disposed on the inner surface of the ladle body, and the top cover is movably mounted on the upper end of the ladle body. The inlet is located on the upper outer surface of the top cover near the right side, and the outlet is located on the lower outer surface of the ladle body near the left side. The I-shaped stopper penetrates from the left side of the upper outer surface of the top cover into the interior of the ladle body. The inner liner is stepped, with a first step, a second step, and a third step sequentially arranged inside. A rectangular recess is provided near the center of the upper outer surface of the first step. This invention can reduce damage caused by long-term impact of molten steel on the interior of the ladle body, and the multi-layer filtration mechanism can separate non-metallic impurities from the molten steel, improving the quality of the molten steel.

[0004] The existing technology has the following problems: When pouring molten steel, it is necessary to guide the molten steel into the interior of the tundish. Due to the difference in height, the molten steel splashes during dripping. The splashed steel droplets solidify into steel slag on the inner wall of the tundish. The steel slag flows with the molten steel, causing blockage of the discharge hole. Moreover, when the molten steel is discharged, the top layer of molten steel will form an oxide layer due to rapid temperature loss. As the molten steel at the bottom continues to flow away, the oxide layer will adhere to the bottom surface of the tundish, causing blockage of the discharge hole. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the fact that, in the prior art, before improvement, there is no isolation device between the streams of molten steel poured at the bottom of the tundish. As the molten steel descends, it splashes in all directions, causing the molten steel to drip onto the side walls of the ladle. Due to the loss of temperature, it solidifies on the inner wall of the ladle, forming lumps. When the molten steel flows to the sides, it easily affects the stability of the molten steel in other streams during the pouring process, and easily brings non-metallic inclusions of the steel into the crystallizer.

[0006] To solve the above-mentioned technical problems, the present invention provides a stabilizing device for molten steel pouring in a tundish, comprising:

[0007] The movable, closed top cover is attached to the top surface of the molten steel casting platform in the tundish.

[0008] Elevation support strips are fixedly connected to the outer surface of the bottom of the molten steel casting platform.

[0009] A liquid accumulation deceleration unit is fixedly installed on the inner side wall of the top of the closed top cover. The liquid accumulation deceleration unit includes an arc-shaped overlapping plate and a guide groove. An exhaust pushing unit is fixedly installed on the bottom surface of the closed top cover and at the two side edges. The exhaust pushing unit includes a high-temperature exhaust hole, an arc-shaped cover and a hydraulic rod. A crushing and chip removal unit is slidably sleeved on the inner side wall of the arc-shaped cover. The crushing and chip removal unit includes an arc-shaped crushing plate and an I-shaped limiting strip.

[0010] In one embodiment of the present invention, a transverse scraping unit is fixedly installed on the inner wall of the tundish steel casting platform. The transverse scraping unit includes an impurity stripping strip, a high-strength ceramic strip, and a stripping guide strip. A splash-proof partition unit is provided on the bottom inner wall of the tundish steel casting platform. The splash-proof partition unit includes a refractory dam.

[0011] In one embodiment of the present invention, a limiting sleeve is fixedly connected to the bottom surface of the closed top cover. Liquid inlet holes are provided on the surfaces of the closed top cover and the limiting sleeve. The liquid inlet holes on the top surfaces of the closed top cover and the limiting sleeve are used to guide molten steel into the interior of the tundish molten steel casting platform. The top surface of the arc-shaped cover is detachably installed on the bottom surface of the closed top cover, and the inner surface of the arc-shaped cover is wrapped around the outer surface of the limiting sleeve.

[0012] In one embodiment of the present invention, the high-temperature exhaust port is located at the top two sides of the arc-shaped cover. When the molten steel inside the limiting sleeve stops being poured, molten steel will remain inside the arc-shaped cover. At this time, the high-temperature exhaust port is used to quickly evacuate the inside of the arc-shaped cover, thereby rapidly reducing the internal temperature and causing it to solidify on the inner wall of the draining arc plate. The top of the high-temperature exhaust port extends through the closed top cover to the top surface. The outer surfaces of the hydraulic rods are respectively installed at the top two sides of the arc-shaped cover. The hydraulic rods are extended to push the arc-shaped extrusion plate. The arc of the inner wall of the arc-shaped cover and the outer surface of the arc-shaped extrusion plate are used to slide the two arc-shaped extrusion plates together. The draining arc plate is provided on the bottom surface of the arc-shaped cover at the middle position.

[0013] In one embodiment of the present invention, the outer surface of the arc-shaped overlapping plate is fixedly connected to the inner walls of both sides of the limiting sleeve. When molten steel is poured into the interior of the limiting sleeve, it accumulates due to the curvature of the outer surface of the arc-shaped overlapping plate. The molten steel is then guided down through the gap between the two arc-shaped overlapping plates. Drainage holes are provided on the outer surface of the arc-shaped overlapping plate. Because the inflow rate is greater than the outflow rate, the molten steel preferentially accumulates on the outer surface of the arc-shaped overlapping plate. The molten steel at lower levels flows downwards under gravity, while the molten steel at the top continuously accumulates. The outer surface of the arc-shaped overlapping plate... The molten steel permeates through the drainage holes on the upper part of the plate. Due to the curvature of the inner wall of the arc-shaped overlapping plate, the permeated molten steel flows along the surface curvature. The bottom surface of the limiting sleeve and the two side edges are provided with guide grooves. The molten steel is guided by the guide grooves. By utilizing the curvature of the structure, the dripping molten steel is transformed into flowable molten steel. The vertical drop of the molten steel is transformed into a more stable flow, reducing the amount of steel slag generated by the dripping. The molten steel is then slowly discharged through the drainage arc plate so that it drips onto the inner wall of the tundish steel casting platform, shortening the drop height.

[0014] In one embodiment of the present invention, limiting grooves are formed on the inner walls of both sides of the arc-shaped cover. An elastic wire is fixedly connected to one inner wall of the limiting groove. One end of the elastic wire is fixedly connected to one end of an I-shaped limiting strip. The outer surface of the I-shaped limiting strip is fixedly connected to the back of the arc-shaped extrusion plate. The output end of the hydraulic rod is movably connected to the top surface of the arc-shaped extrusion plate. When the arc-shaped extrusion plate slides, it scrapes off the oxide layer adhering to the inner wall of the drain arc plate, thereby extruding and deforming it. The arc-shaped cover is peeled off to clean out the extruded steel layer inside. After the hydraulic rod retracts, it works with the elastic wire on the inner wall of the limiting groove to push the I-shaped limiting strip with elastic force, thereby pushing the arc-shaped extrusion plate to both sides to peel it off, exposing the drain arc plate again so that molten steel can continue to be poured in.

[0015] In one embodiment of the present invention, a steel injection hole is provided on the bottom outer surface of the tundish steel casting platform, an outward opening is provided at the middle position of the outer side of the tundish steel casting platform, and a partition is fixedly connected to the inner wall of the tundish steel casting platform and the junction of the outward opening.

[0016] In one embodiment of the present invention, a groove is provided on the inner top edge of the tundish steel casting platform, and a sliding strip is provided on the inner wall of the groove. The outer surface of the impurity strip is provided on the inner surface of the sliding strip. As molten steel continuously accumulates inside the tundish steel casting platform, the sliding strip moves the impurity strip, and the stripping guide extends to the bottom surface of the oxide layer on top of the molten steel. A refractory dam is fixedly connected to the inner bottom wall of the tundish steel casting platform. The molten steel dripping into the tundish steel casting platform is blocked by the refractory dam, thereby optimizing the stable flow direction of the molten steel at the bottom of the tundish, ensuring that there is no slag entrainment at the tundish nozzle, and improving the quality of the molten steel.

[0017] In one embodiment of the present invention, the outer surface of the high-strength ceramic is fixedly connected to the bottom outer surface of the impurity stripping strip, and the chip guide is located at the joint between the impurity stripping strip and the high-strength ceramic. The chip guide is used to guide the impurity into the interior of the outer opening, and the oxide layer is blocked by the partition. The oxide layer inside the outer opening is then cleaned away by the workers.

[0018] In one embodiment of the present invention, a peeling strip is fixedly installed on the inner side wall of the top of the high-strength ceramic, and a peeling guide strip is fixedly connected to the bottom outer surface of the high-strength ceramic. As the peeling guide strip moves continuously and the curvature of the surface increases, the oxide layer accumulates continuously and is guided into the interior of the high-strength ceramic. At the same time, the peeling strip rotates to push the oxide layer to one side.

[0019] The technical solution of the present invention has the following advantages compared with the prior art:

[0020] The present invention discloses a stabilizing device for molten steel pouring in an tundish. This device, in conjunction with an inlet hole on the top surface of a closed top cover and a limiting sleeve, guides molten steel into the interior of the tundish pouring platform. As the molten steel is poured into the limiting sleeve, the curvature of the outer surface of the arc-shaped overlapping plates helps to accumulate the descending molten steel. The gap between the two arc-shaped overlapping plates then guides the molten steel downwards. Because the inflow rate is greater than the outflow rate, the molten steel preferentially accumulates on the outer surface of the arc-shaped overlapping plates. The molten steel at lower levels flows downwards under gravity, while the molten steel at the top flows downwards with the molten steel... The process involves continuous accumulation of molten steel, which permeates through drainage holes on the outer surface of the curved lap plate. The permeating molten steel flows along the curvature of the inner wall of the curved lap plate, and is then guided by a guide chute. The curvature of the structure transforms the dripping molten steel into flowable molten steel, converting the vertical drop of the molten steel into a more stable flow, reducing the amount of slag generated by the dripping. The molten steel is then slowly discharged through the drainage arc plate, allowing it to drip onto the inner wall of the tundish steel casting platform, thus shortening the drop height.

[0021] The present invention discloses a tundish molten steel pouring stabilization device. After the molten steel inside the limiting sleeve stops pouring, molten steel remains inside the arc-shaped cover. At this time, the interior of the arc-shaped cover is rapidly evacuated through a high-temperature exhaust port, thereby quickly reducing the internal temperature and causing it to solidify on the inner wall of the draining arc plate. The hydraulic rod extends and pushes the arc-shaped extrusion plate. Utilizing the curvature of the inner wall of the arc-shaped cover and the outer surface of the arc-shaped extrusion plate, the two arc-shaped extrusion plates slide together. As the arc-shaped extrusion plate slides, it scrapes off the oxide layer adhering to the inner wall of the draining arc plate, thereby extruding and deforming it, peeling off the arc-shaped cover, and cleaning out the extruded steel layer inside. After the hydraulic rod retracts, the elastic wire on the inner wall of the limiting slide groove pushes the I-shaped limiting strip with elastic force, thereby pushing the arc-shaped extrusion plate to both sides and peeling it off, exposing the draining arc plate again, so that molten steel can continue to be poured.

[0022] This invention discloses a stabilizing device for molten steel pouring in a tundish. The molten steel dripping onto the tundish pouring platform is blocked by a refractory dam, thus optimizing the flow direction of the molten steel at the bottom of the tundish and ensuring a low slag-free slag-free flow at the tundish nozzle, improving steel quality. As the molten steel accumulates inside the tundish pouring platform, a sliding strip moves an impurity stripping bar, which extends to the bottom surface of the oxide layer on top of the molten steel. With the continuous movement of the stripping bar and the curvature of its surface, the oxide layer accumulates and is guided into the interior of the high-strength ceramic. Simultaneously, the rotating stripping bar pushes the oxide layer to one side, guiding it through a chip guide into the interior of the outer opening. A baffle plate further blocks the oxide layer, which is then cleaned away by workers inside the outer opening. Attached Figure Description

[0023] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of the tundish steel casting platform in this invention;

[0026] Figure 3 This is a cross-sectional three-dimensional structural diagram of the tundish steel casting platform in this invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the tundish steel casting platform in this invention, viewed in cross-section from the side of the material unloading section.

[0028] Figure 5This is a cross-sectional view of the assembled three-dimensional structure of the tundish steel casting platform in this invention.

[0029] Figure 6 This is a three-dimensional structural diagram of the tundish steel casting platform in this invention, showing its sectional view and closed side.

[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of the arc-shaped cover in this invention.

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the arc-shaped cover in this invention;

[0032] Figure 9 This is a three-dimensional structural diagram of the internal structure of the tundish steel casting platform in this invention.

[0033] Figure 10 This is a schematic diagram of the three-dimensional structure of the high-strength ceramic in this invention.

[0034] Explanation of reference numerals in the accompanying drawings: 11. Tundish molten steel pouring platform; 111. Steel injection hole; 112. Outward vent; 113. Baffle plate; 114. Sliding bar;

[0035] 115. Impurity stripping strip; 116. Chip guide; 117. High-strength ceramic; 118. Stripping strip; 119. Stripping guide strip;

[0036] 1110. Refractory dam for partitioning;

[0037] 12. Closed top cover; 121. Limiting sleeve; a1. Arc-shaped overlapping plate; a2. Drain hole; a3. Guide channel;

[0038] 122. Liquid inlet; 123. High-temperature exhaust port; 124. Arc-shaped cover; 125. Hydraulic rod; 126. Drainage arc plate; 127. Limiting groove; 128. Elastic wire; 129. I-shaped limiting strip; 1210. Arc-shaped extrusion plate;

[0039] 13. Raise the support strip. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0041] Reference Figure 1 - Figure 10 As shown, a tundish molten steel pouring stabilizing device of the present invention includes:

[0042] The closed top cover 12 is attached to the top surface of the molten steel casting platform 11 of the tundish.

[0043] The support bar 13 is fixedly connected to the outer surface of the bottom of the molten steel casting platform 11.

[0044] A liquid accumulation deceleration unit is fixedly installed on the inner side wall of the top of the closed top cover 12. The liquid accumulation deceleration unit includes an arc-shaped overlapping plate a1 and a guide chute a3. An exhaust push unit is fixedly installed on the bottom surface of the closed top cover 12 and at the two side edges. The exhaust push unit includes a high-temperature exhaust hole 123, an arc-shaped cover 124 and a hydraulic rod 125. A crushing and chip removal unit is slidably sleeved on the inner side wall of the arc-shaped cover 124. The crushing and chip removal unit includes an arc-shaped crushing plate 1210 and an I-shaped limiting strip 129.

[0045] When the molten steel is poured, the accumulation liquid deceleration unit provided by this invention, in conjunction with the curvature of the surface of the arc-shaped lap plate a1, utilizes the outer surface of the arc-shaped lap plate a1 to generate splashes that pull the molten steel towards the center upon contact. At the same time, when the amount of molten steel entering is greater than the amount exiting, the bottom layer of molten steel will flow downward through the arc-shaped lap plate a1, reducing splashes caused by the drop difference. Excess molten steel will flow through the arc-shaped lap plate a1, utilizing the curvature of the inner wall surface to discharge it. The three-dimensional flow of molten steel will also greatly accelerate the flow rate of molten steel, and the high drop difference will be reduced into a drop drop difference, which will also reduce splashes generated when molten steel drips.

[0046] When the exhaust propulsion unit is in use, molten steel remains inside the arc-shaped cover 124. Rapidly drawing out the air lowers the internal temperature, causing the steel to solidify on the inner wall of the arc-shaped cover 124. The hydraulic rod 125 extends and pushes the arc-shaped extrusion plate 1210. Utilizing the curvature of the inner wall of the arc-shaped cover 124 and the outer surface of the arc-shaped extrusion plate 1210, they slide together, connecting the two arc-shaped extrusion plates 1210. As the arc-shaped extrusion plate 1210 slides, it compacts and peels off the oxide layer, effectively removing the extruded steel layer from the arc-shaped cover 124.

[0047] Furthermore, such as Figure 9 - Figure 10 As shown, a transverse scraping unit is fixedly installed on the inner wall of the tundish steel casting platform 11. The transverse scraping unit includes an impurity stripping strip 115, a high-strength ceramic strip 117, and a stripping guide strip 119. A splash-proof partition unit is provided on the bottom inner wall of the tundish steel casting platform 11. The splash-proof partition unit includes a chip guide port 116.

[0048] When in use, the slider 114, impurity stripping strip 115, and stripping guide strip 119 provided by the present invention work together to move the impurity stripping strip 115 and extend the stripping guide strip 119 to the bottom surface of the oxide layer on the top of the molten steel. As the stripping guide strip 119 moves and the curvature of the surface increases, the oxide layer accumulates and is guided into the interior of the high-strength ceramic 117 for collection.

[0049] Furthermore, such as Figure 2 - Figure 8 As shown, a limiting sleeve 121 is fixedly connected to the bottom surface of the closed top cover 12. An inlet hole 122 is provided on the surfaces of the closed top cover 12 and the limiting sleeve 121. The top surface of the arc-shaped cover 124 is detachably installed on the bottom surface of the closed top cover 12, and the inner surface of the arc-shaped cover 124 is wrapped around the outer surface of the limiting sleeve 121.

[0050] When the limiting sleeve 121 and arc-shaped cover 124 provided by the present invention are used, they cooperate with the closed top cover 12 and the liquid inlet hole 122 on the top surface of the limiting sleeve 121 to guide the molten steel into the interior of the tundish molten steel casting platform 11. When the molten steel is poured into the interior of the limiting sleeve 121, it is decelerated by the double layer of the limiting sleeve 121 and the arc-shaped cover 124, which reduces the drop and reduces the splashing effect.

[0051] Furthermore, such as Figure 2 - Figure 8 As shown, the high-temperature exhaust port 123 is located at the top two sides of the arc-shaped cover 124, and the top of the high-temperature exhaust port 123 extends through the closed top cover 12 to the top surface. The outer surfaces of the hydraulic rod 125 are respectively installed at the top two sides of the arc-shaped cover 124. A drain arc plate 126 is provided on the bottom surface of the arc-shaped cover 124 at the middle position.

[0052] When the high-temperature exhaust port 123, the drain arc plate 126, and the arc-shaped extrusion plate 1210 provided by the present invention are in use, the high-temperature exhaust port 123 quickly draws air from the inside of the arc-shaped cover 124, thereby rapidly reducing the internal temperature and causing it to solidify on the inner wall surface of the drain arc plate 126. Then, the hydraulic rod 125 extends and pushes the arc-shaped extrusion plate 1210 to pressurize and scrape off the oxide layer left inside the drain arc plate 126.

[0053] Furthermore, such as Figure 3 - Figure 6 As shown, the outer surface of the arc-shaped overlapping plate a1 is fixedly connected to the inner walls of both sides of the limiting sleeve 121. A drain hole a2 is provided on the outer surface of the arc-shaped overlapping plate a1, and a guide groove a3 is provided on the bottom surface of the limiting sleeve 121 at the two side edges.

[0054] When the arc-shaped overlapping plate a1 and the guide chute a3 provided by this invention are used, the arc on the outer surface of the arc-shaped overlapping plate a1 is used to accumulate the falling molten steel, and the gap between the two arc-shaped overlapping plates a1 is used to guide the molten steel down. Since the inflow is greater than the outflow, the molten steel will preferentially accumulate on the outer surface of the arc-shaped overlapping plate a1. The molten steel at the lower position will flow downward under the gravity at the top, and the molten steel at the top will continue to accumulate. It will permeate through the drain hole a2 on the outer surface of the arc-shaped overlapping plate a1. The permeated molten steel will flow along the surface arc due to the arc on the inner wall of the arc-shaped overlapping plate a1, and then be guided by the guide chute a3. By utilizing the arc of the structure, the dripping molten steel is transformed into flowable molten steel, and the drop caused by the vertical dripping of molten steel is transformed into a more stable flow.

[0055] Furthermore, such as Figure 2 - Figure 8 As shown, limiting grooves 127 are provided on the inner walls of both sides of the arc-shaped cover 124. An elastic wire 128 is fixedly connected to one inner wall of the limiting groove 127. One end of the elastic wire 128 is fixedly connected to one end of the I-shaped limiting strip 129. The outer surface of the I-shaped limiting strip 129 is fixedly connected to the back of the arc-shaped extrusion plate 1210. The output end of the hydraulic rod 125 is movably connected to the top surface of the arc-shaped extrusion plate 1210.

[0056] The arc-shaped extrusion plate 1210, drain arc plate 126, limiting slide groove 127, elastic wire 128, and I-shaped limiting strip 129 provided by this invention, when in use, utilize the curvature of the inner wall surface of the arc-shaped cover 124 and the outer surface of the arc-shaped extrusion plate 1210 to slide together, and the two arc-shaped extrusion plates 1210 are joined together. When the arc-shaped extrusion plate 1210 slides, the oxide layer adhering to the inner wall surface of the drain arc plate 126 is scraped off, thereby extruding and deforming it, peeling off the arc-shaped cover 124 to clean out the extruded steel layer inside, and after the hydraulic rod 125 is retracted, the elastic wire 128 on the inner wall surface of the limiting slide groove 127 pushes the I-shaped limiting strip 129 with elastic force, thereby pushing the arc-shaped extrusion plate 1210 to both sides and peeling it apart, exposing the drain arc plate 126 again, so that molten steel can continue to be poured in.

[0057] Furthermore, such as Figure 9 - Figure 10 As shown, a steel injection hole 111 is provided on the bottom outer surface of the tundish steel casting platform 11, and an outward opening 112 is provided at the middle position of the outer side of the tundish steel casting platform 11. A partition 113 is fixedly connected to the inner wall of the tundish steel casting platform 11 and the junction of the outward opening 112.

[0058] When the outward opening 112 provided by the present invention is used, it is used in conjunction with the partition 113 to block the oxide layer, so that the inside of the outward opening 112 becomes an independent space. When the oxide layer accumulates inside the outward opening 112, the oxide layer inside the outward opening 112 can be cleaned away by the employees.

[0059] Furthermore, such as Figure 9 - Figure 10 As shown, a chute is provided on the inner top edge of the tundish steel casting platform 11, and a sliding strip 114 is provided on the inner wall of the chute. The outer surface of the impurity stripping strip 115 is provided on the inner surface of the sliding strip 114. A partition refractory dam 1110 is fixedly connected to the inner bottom wall of the tundish steel casting platform 11.

[0060] When the impurity stripping strip 115 and the slide bar 114 provided by the present invention are used, the impurity stripping strip 115 slides back and forth on the surface of the slide bar 114, so that the surface of the impurity stripping strip 115 slides on the top surface of the molten steel, thereby collecting the oxide layer generated on the top of the molten steel due to temperature difference.

[0061] Furthermore, such as Figure 9 - Figure 10 As shown, the outer surface of the high-strength ceramic 117 is fixedly connected to the bottom outer surface of the impurity stripping strip 115, and the chip guide port 116 is located at the joint between the impurity stripping strip 115 and the high-strength ceramic 117.

[0062] When the chip guide port 116 and the high-strength ceramic 117 provided by the present invention are in use, the collected oxide layer will accumulate inside the high-strength ceramic 117, and then the accumulated oxide layer inside the high-strength ceramic 117 will be discharged through the chip guide port 116.

[0063] Furthermore, such as Figure 9 - Figure 10 As shown, a stripping strip 118 is fixedly installed on the top inner wall of the high-strength ceramic 117, and a stripping guide strip 119 is fixedly connected to the outer bottom surface of the high-strength ceramic 117.

[0064] When the peeling guide strip 119 and peeling strip 118 provided by the present invention are in use, as the peeling guide strip 119 moves continuously and the curvature of the surface causes the oxide layer to accumulate continuously and guide it into the interior of the high-strength ceramic 117. At the same time, the peeling strip 118 rotates to push the oxide layer to one side.

[0065] The working principle of this auxiliary loading and unloading device will be explained in detail below.

[0066] The molten steel is guided into the interior of the tundish casting platform 11 by the liquid inlet 122 on the top surface of the closed top cover 12 and the limiting sleeve 121. As the molten steel is poured into the limiting sleeve 121, the arc of the outer surface of the arc-shaped overlapping plate a1 helps to accumulate the descending molten steel. The gap between the two arc-shaped overlapping plates a1 then guides the molten steel downwards. Because the inflow is greater than the outflow, the molten steel preferentially accumulates on the outer surface of the arc-shaped overlapping plate a1. The molten steel at lower levels flows downwards under gravity, while the molten steel at the top continuously accumulates, utilizing the arc... The molten steel permeates through the drainage holes a2 on the outer surface of the lap plate a1. Due to the curvature of the inner wall of the lap plate a1, the permeated molten steel flows along the surface curvature and is then guided by the guide chute a3. By utilizing the curvature of the structure, the dripping molten steel is transformed into flowable molten steel, and the drop caused by the vertical dripping of molten steel is transformed into a more stable flow, reducing the excessive steel slag generated by the dripping. The molten steel is then slowly discharged through the drainage arc plate 126 so that it drips onto the inner wall of the tundish molten steel casting platform 11, shortening the drop height.

[0067] When the molten steel inside the limiting sleeve 121 stops being poured, molten steel will remain inside the arc-shaped cover 124. At this time, the interior of the arc-shaped cover 124 is rapidly evacuated through the high-temperature exhaust port 123, thereby quickly reducing the internal temperature and causing the molten steel to solidify on the inner wall of the drain arc plate 126. The hydraulic rod 125 extends and pushes the arc-shaped extrusion plate 1210. Utilizing the curvature of the inner wall of the arc-shaped cover 124 and the outer surface of the arc-shaped extrusion plate 1210, they slide together, bringing the two arc-shaped extrusion plates 1210 together. As the arc-shaped extrusion plate 1210 slides, it scrapes off the oxide layer adhering to the inner wall of the drain arc plate 126, thereby extruding and deforming it. The arc-shaped cover 124 is peeled off to clean out the extruded steel layer inside. After the hydraulic rod 125 is retracted, it works with the elastic wire 128 on the inner wall of the limiting slide groove 127 to push the I-shaped limiting strip 129 with elastic force, thereby pushing the arc-shaped extrusion plate 1210 to both sides and peeling it off, exposing the drain arc plate 126 again so that molten steel can continue to be poured in.

[0068] Molten steel dripping into the tundish casting platform 11 is blocked by the refractory dam 1110, thereby optimizing the stable flow direction of the molten steel at the bottom of the tundish, ensuring that there is no slag entrainment at the tundish nozzle, and improving the quality of the molten steel. As the molten steel continues to accumulate inside the tundish casting platform 11, the sliding strip 114 moves the impurity stripping strip 115, and the stripping guide strip 119 extends to the bottom surface of the oxide layer on top of the molten steel. With the continuous movement of the stripping guide strip 119 and the curvature of the surface, the oxide layer continues to accumulate and is guided into the interior of the high-strength ceramic 117. At the same time, the stripping strip 118 rotates, pushing the oxide layer to one side and guiding it into the interior of the outer opening 112 through the chip guide 116. The partition 113 blocks the oxide layer, and the workers clean the oxide layer inside the outer opening 112.

[0069] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A device for stabilizing the flow of molten steel in a tundish, comprising: The closed top cover (12) is attached to the top surface of the molten steel casting platform (11) of the intermediate ladle. The support bar (13) is fixedly connected to the outer surface of the bottom of the molten steel casting platform (11) of the tundish. The features are as follows: a liquid accumulation deceleration unit is fixedly installed on the inner side wall of the top of the closed top cover (12), the liquid accumulation deceleration unit includes an arc-shaped overlapping plate (a1) and a guide groove (a3), an exhaust push unit is fixedly installed on the bottom surface of the closed top cover (12) and at the two side edges, the exhaust push unit includes a high temperature exhaust hole (123), an arc-shaped cover (124) and a hydraulic rod (125), and a squeezing chip removal unit is slidably sleeved on the inner side wall of the arc-shaped cover (124), the squeezing chip removal unit includes an arc-shaped squeezing plate (1210) and an I-shaped limiting strip (129). A limiting sleeve (121) is fixedly connected to the bottom surface of the closed top cover (12). An inlet hole (122) is provided on the surfaces of the closed top cover (12) and the limiting sleeve (121). The top surface of the arc-shaped cover (124) is detachably installed on the bottom surface of the closed top cover (12), and the inner surface of the arc-shaped cover (124) is wrapped around the outer surface of the limiting sleeve (121). The high-temperature exhaust port (123) is located at the top two sides of the arc-shaped cover (124), and the top of the high-temperature exhaust port (123) extends through the closed top cover (12) to the top surface. The outer surfaces of the hydraulic rod (125) are respectively installed at the top two sides of the arc-shaped cover (124). The bottom surface of the arc-shaped cover (124) is provided with a drain arc plate (126) located in the middle position. The outer surface of the arc-shaped overlapping plate (a1) is fixedly connected to the inner walls of both sides of the limiting sleeve (121). A drain hole (a2) is provided on the outer surface of the arc-shaped overlapping plate (a1). A guide groove (a3) ​​is provided on the bottom surface of the limiting sleeve (121) at the two side edges. Limiting grooves (127) are provided on the inner walls of both sides of the arc-shaped cover (124). An elastic wire (128) is fixedly connected to one side of the inner wall of the limiting groove (127). One end of the elastic wire (128) is fixedly connected to one end of the I-shaped limiting strip (129). The outer surface of the I-shaped limiting strip (129) is fixedly connected to the back of the arc-shaped extrusion plate (1210). The output end of the hydraulic rod (125) is movably connected to the top surface of the arc-shaped extrusion plate (1210).

2. The tundish molten steel pouring stabilizing device according to claim 1, characterized in that: A transverse scraping unit is fixedly installed on the inner wall of the tundish steel casting platform (11). The transverse scraping unit includes an impurity stripping strip (115), ceramic (117), and stripping guide strip (119). A splash-proof partition unit is provided on the bottom inner wall of the tundish steel casting platform (11). The splash-proof partition unit includes a refractory dam (1110).

3. The tundish molten steel pouring stabilizing device according to claim 1, characterized in that: The bottom outer surface of the tundish molten steel casting platform (11) is provided with a steel injection hole (111), and an outward opening (112) is provided at the middle position of the outer side of the tundish molten steel casting platform (11). A partition (113) is fixedly connected to the inner wall of the tundish molten steel casting platform (11) and the junction of the outward opening (112).

4. The tundish molten steel pouring flow stabilizing device according to claim 2, characterized in that: A trough is provided on the inner top edge of the tundish steel casting platform (11), and a sliding strip (114) is provided on the inner wall of the trough. The outer surface of the impurity stripping strip (115) is provided on the inner surface of the sliding strip (114).

5. A tundish molten steel pouring flow stabilizing device according to claim 2, characterized in that: The outer surface of the ceramic (117) is fixedly connected to the bottom outer surface of the impurity stripping strip (115), and the chip guide (116) is located at the joint between the impurity stripping strip (115) and the ceramic (117).

6. A tundish molten steel pouring flow stabilizing device according to claim 2, characterized in that: A peeling strip (118) is fixedly installed on the top inner wall of the ceramic (117), and a peeling guide strip (119) is fixedly connected to the outer bottom surface of the ceramic (117).

Images