A tundish cover with long service life

Abstract

Description Abstract The present invention relates to the field of steelmaking, and in particular to a tundish cover with a long service life, comprising an outer frame, a plurality of vertical connecting columns fixed on the inner wall of the outer frame, a plurality of horizontal connecting columns fixed between two adjacent vertical connecting columns, a plurality of anchors fixed on the vertical connecting columns and the horizontal connecting columns, refractory materials are cast between the outer frame, the vertical connecting columns and the horizontal connecting columns, and the vertical connecting columns and the horizontal connecting columns are hollow and interconnected with each other, the vertical connecting column at the far left is connected with an input pipe of a cooling circulation device, and the output pipe of the cooling circulation device is connected to the vertical connecting column at the far right, a hook is fixed on the upper surface of the refractory material, which will not break or fall off easily, thereby greatly increasing the fixing effect of the cover, and by setting the vertical connecting columns and the horizontal connecting columns to be hollow and connecting them to the cooling circulation device, the service life of the tundish cover is ultimately greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of steelmaking, in particular to a tundish cover with a long service life. Background Art

[0002] The tundish is a refractory container used in mini-process steelmaking. It first receives molten steel from the ladle and then distributes it to the various molds through the tundish nozzle. The tundish serves to reduce the static pressure of the molten steel, stabilize the flow rate, remove inclusions, and store and distribute the molten steel. In a continuous casting plant, numerous tundishes operate under various conditions. The tundish cover directly covers the tundish and operates in cyclical cycles: baking, stopper rod installation, baking on the upper continuous casting platform, receiving molten steel, pouring steel, and cooling on the lower continuous casting platform. Therefore, the tundish cover plays a crucial role in operation: it prevents heat loss and, at the same time, blocks heat radiation and splashing of molten steel or slag, protecting various equipment and improving the working environment.

[0003] However, the working environment of the tundish cover is very harsh. It is subjected to various physical and chemical damages such as frequent temperature fluctuations, high temperature radiation, slag erosion, deformation stress of the steel structure, etc., which causes serious damage and peeling of the lining refractory material, making the service life of the tundish cover very short. For example, the patent with application number CN202020540273.6 discloses a tundish cover with good thermal insulation performance. The cover in this patent has the following disadvantages: 1) The fixing effect between the high-temperature phase change material and the frame in this patent is very poor, and the gripping force between the two is very small, which can easily cause the high-temperature phase change material to break and fall off from the frame, thereby reducing the service life of the cover; 2) The cover in this patent has a poor heat dissipation effect on the frame during use, which serves as a connecting and fixing function. Once the temperature of the frame rises too high, the frame itself will melt. Once the frame melts, the refractory material fixed to it will break and fall off, which ultimately leads to a very short service life of the refractory material. Therefore, there is an urgent need for a tundish cover with good gripping and fixing effect between the frame and the refractory castable and good heat dissipation effect on the frame. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a tundish cover with a long service life, which solves the problems existing in the prior art. The tundish cover not only has a good fixing effect on the refractory material, but also has a good cooling and heat dissipation effect on the vertical connecting columns, horizontal connecting columns and W-shaped anchors that fix the refractory material. As a result, the refractory material will not easily break or fall off, thereby greatly improving the service life of the tundish cover and also improving the safety of use.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a tundish cover with a long service life, comprising an outer frame, a plurality of vertical connecting columns fixed on the inner wall of the outer frame, a plurality of transverse connecting columns fixed between two adjacent vertical connecting columns, a plurality of anchors fixed on the vertical connecting columns and the transverse connecting columns, refractory material cast between the outer frame, the vertical connecting columns and the transverse connecting columns, the vertical connecting columns and the transverse connecting columns being hollow and interconnected, the leftmost vertical connecting column being connected to an input pipe of a cooling circulation device, the output pipe of the cooling circulation device being connected to the rightmost vertical connecting column, and a hook being fixed on the side of the outer frame.

[0008] Preferably, the anchor is fixed on the lower surface of the vertical connecting column and the transverse connecting column, and its shape is set to be W-shaped. The two top ends and the middle part of the W-shaped anchor are fixed on the lower surface of the vertical connecting column or the transverse connecting column, and the W-shaped anchor is set to be hollow, and the two top ends are connected to the vertical connecting column or the transverse connecting column.

[0009] Preferably, one end of the transverse connecting column is provided with an air inlet, and the other end is provided with an air outlet, and a partition is fixed inside the transverse connecting column near the upper end, and an air vent is left between the left end of the partition and the left inner wall of the transverse connecting column, and a discharge port is opened near the right end of the partition, and a container is fixed to the lower surface of the partition, and the container is filled with heat-absorbing balls, and the container includes a left vertical plate and a right vertical plate fixedly connected to the partition, and the lower end of the left vertical plate is fixed with one end of a first inclined plate inclined toward the lower right, and the lower end of the right vertical plate is fixed with a second inclined plate inclined toward the lower left, and the upper end of a connecting pipe is connected between the lower right end of the first inclined plate and the lower left end of the second inclined plate, and the lower end of the connecting pipe is connected to the right top end of the leftmost anchor, and the diameter of the connecting pipe is smaller than the diameter of the heat-absorbing ball, and a feed port is opened directly above the connecting pipe and on the partition.

[0010] Preferably, the left vertical plate and the first inclined plate are configured to be non-hollow, and the second inclined plate is configured to be grid-shaped hollow.

[0011] Preferably, the partition is arranged in an inclined shape with the left side higher and the right side lower, and an arc-shaped cover is fixed at the bottom of the feed port.

[0012] Preferably, a suction fan is fixed on the inner wall of the upper left end of the leftmost anchor piece on the transverse connecting column.

[0013] Preferably, several impact mechanisms are fixed on the inner bottom surface of the transverse connecting column, and the impact mechanism includes a first spring fixed on the inner bottom surface of the transverse connecting column, a first baffle is fixed on the left side of the first spring, the lower end of the first baffle does not contact the inner bottom surface of the transverse connecting column, and the upper end of the first baffle is fixed with the lower end of the second baffle inclined to the upper right, and the upper end of the second baffle is fixed with an impact block, which is cylindrical.

[0014] Preferably, a plurality of impact mechanisms are fixed on the inner bottom surface of the transverse connecting column, and the impact mechanism includes a first spring fixed on the inner bottom surface of the transverse connecting column, a first baffle is fixed on the left side of the first spring, the lower end of the first baffle does not contact the inner bottom surface of the transverse connecting column, and the upper end of the first baffle is hinged to the lower end of the second baffle inclined to the upper right, an impact block is fixed on the upper end of the second baffle, and one end of a plurality of second springs is fixed on the right side surface of the second baffle, and the other end of the second spring is fixed to the upper end of the first spring.

[0015] Preferably, the impact mechanism is provided at the interval between two adjacent W-shaped anchors.

[0016] Preferably, a plurality of Y-shaped anchoring nails are fixed on the upper surfaces and side surfaces of the vertical connecting columns and the horizontal connecting columns.

[0017] (3) Beneficial effects

[0018] 1. The present invention provides a tundish cover with a long service life. By providing anchors, the present invention significantly enhances the gripping force between the vertical and transverse connecting columns and the refractory material, thereby effectively securing the refractory material to the vertical and transverse connecting columns, preventing them from easily breaking or falling, and thereby significantly enhancing the fixing effect of the cover. Furthermore, the present invention configures the vertical and transverse connecting columns to be hollow and connects them to a cooling circulation device. This effectively cools and dissipates the vertical and transverse connecting columns and the anchors fixed thereto, ultimately extending the service life of the three components and thus significantly improving the service life of the tundish cover.

[0019] 2. The present invention provides a W-shaped anchor, and by providing X-shaped reinforcement ribs and Y-shaped anchor nails, it can effectively grip the refractory material, greatly enhancing the gripping effect. In addition, the W-shaped anchor is hollow and connected to the vertical connecting column or the horizontal connecting column, so that cooling gas or liquid can pass through the interior of the W-shaped anchor, which greatly enhances the cooling effect on the anchor, prevents the anchor from melting and deforming due to excessive temperature, effectively ensures the gripping force of the anchor on the refractory material, and further improves the service life of the cover.

[0020] 3. The present invention utilizes the circulating motion of the heat-absorbing balls to efficiently, quickly, and evenly absorb heat. Furthermore, the heat absorbed by the balls during their motion is efficiently carried away by the cooling gas. This eliminates the problem of the heat-absorbing balls being stacked together, making it difficult to dissipate the heat. This significantly improves the cooling effect, preventing the vertical and horizontal connecting columns and W-shaped anchors from melting due to high temperatures. Furthermore, the heat-absorbing balls effectively insulate the area below them while preventing the temperature above them from rising too quickly or too high.

[0021] 4. The present invention adopts an impact mechanism and changes the flow rate of the cooling gas to enable the impact block to repeatedly impact the second inclined plate, thereby accelerating the relative movement between the heat-absorbing balls thereon, thereby accelerating the cooling effect of the heat-absorbing balls, and also playing a role in clearing the stacked heat-absorbing balls, ensuring the smooth circulation of the heat-absorbing balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the present invention.

[0023] Figure 2 This is a top view of the present invention after removing the refractory material.

[0024] Figure 3 Schematic diagram of the anchors on the lower surfaces of the vertical connecting columns and the horizontal connecting columns of the present invention.

[0025] Figure 4 Schematic diagram of the W-shaped anchor of the present invention.

[0026] Figure 5 Schematic diagram of the internal structure of the transverse connecting column of the present invention.

[0027] Figure 6 FIG. 1 is a schematic diagram of an embodiment of a striking mechanism of the present invention.

[0028] Figure 7 FIG. 2 is a schematic diagram of another embodiment of the impact mechanism of the present invention.

[0029] Figure 8 Schematic diagram of the Y-shaped anchor nails on the vertical connecting columns and the horizontal connecting columns of the present invention.

[0030] In the figure: 1-outer frame, 2-vertical connecting column, 3-horizontal connecting column, 4-anchor, 5-refractory material, 6-cooling circulation device, 7-input pipe, 8-output pipe, 9-hook, 10-top part, 11-middle part, 12-air inlet, 13-air outlet, 14-partition, 15-vent, 16-discharging port, 17-container, 18-heat absorbing ball, 19-left vertical plate, 20-right vertical plate, 21-first inclined plate, 22-second inclined plate, 23-connecting pipe, 24-feeding port, 25-arc cover, 26-suction fan, 27-impact mechanism, 28-first spring, 29-first baffle, 30-second baffle, 31-impact block, 32-second spring, 33-Y-shaped anchor nail. DETAILED DESCRIPTION

[0031] The following is a combination of the embodiments of the present invention Figure 1-8 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] The present invention provides a technical solution: a tundish cover with a long service life, comprising an outer frame 1, a plurality of vertical connecting columns 2 are fixed on the inner wall of the outer frame 1, a plurality of horizontal connecting columns 3 are fixed between two adjacent vertical connecting columns 2, a plurality of anchors 4 are fixed on the vertical connecting columns 2 and the horizontal connecting columns 3, refractory materials 5 are poured between the outer frame 1, the vertical connecting columns 2 and the horizontal connecting columns 3, and the vertical connecting columns 2 and the horizontal connecting columns 3 are configured to be hollow and interconnected, an input pipe 7 of a cooling circulation device 6 is connected to the vertical connecting column 2 at the far left end, an output pipe 8 of the cooling circulation device 6 is connected to the vertical connecting column 2 at the far right end, a hook 9 is fixed on the side of the outer frame 1, and the present invention is realized by vertically The anchors 4 are fixed on the connecting columns 2 and the transverse connecting columns 3, so that after the refractory material 5 is poured, the gripping force of the refractory material 5 is greatly increased, thereby making the fixing effect between the refractory material 5 and the vertical connecting columns 2 and the transverse connecting columns 3 good, so that it will not break or fall off easily, thereby greatly increasing the fixing effect of the cover. In addition, the present invention sets the vertical connecting columns 2 and the transverse connecting columns 3 to be hollow, and connects them to the cooling circulation device 6, so that the vertical connecting columns 2 and the transverse connecting columns 3 and the anchors 4 fixed thereon can be well cooled and dissipated, and ultimately the service life of the three can be increased, thereby ultimately greatly improving the service life of the tundish cover; wherein the refractory material 5 belongs to The prior art may be a magnesium plate cast from a magnesium refractory material; wherein the cooling circulation device 6 also belongs to the prior art. For example, the cooling circulation device 6 may be configured to consist of a cooling box and a cooling pipe arranged inside the cooling box, the cooling pipe is connected to the input pipe 7 and the output pipe 8, the cooling box is filled with coolant, and a liquid pump or an air pump is provided thereon, which can pass gas into the vertical connecting column 2 and the horizontal connecting column 3, or can pass liquid therein, and the gas or liquid cooled by the cooling circulation device 6 enters the vertical connecting column 2 and the horizontal connecting column 3 from the input pipe 7, cooling the vertical connecting column 2 and the horizontal connecting column 3, and at the same time cooling the anchor 4 fixed thereon. Cooling prevents the anchor 4 from being easily melted and oxidized by high temperature, thereby ensuring the gripping force of the anchor 4 on the refractory material 5 in a high temperature environment, thereby preventing the refractory material 5 from being easily broken or dropped, further increasing the service life of the refractory material 5. The gas or liquid coming out of the vertical connecting column 2 and the horizontal connecting column 3 re-enters the cooling circulation device 6 through the output pipe 8 for cooling, and the cycle repeats like this. The setting of the hook 9 facilitates the taking and placing of the entire tundish cover, because the tundish cover is relatively heavy and needs to be lifted by a crane, and the setting of the hook 9 is convenient for connecting the fixing rope, thereby facilitating the lifting of the crane. The hook 9 can be set on the front side of the outer frame 1.The refractory material 5 is provided with a plurality of through holes, each of which is provided with a removable upper cover. The through holes are provided for receiving stopper rods, which are used to control the flow rate of the molten steel in the tundish. The number, shape and size of the through holes are set as required, and a matching removable upper cover is provided above the through holes.

[0033] The anchor 4 is fixed to the lower surface of the vertical connecting column 2 and the horizontal connecting column 3, and its shape is set to be W-shaped. The two top ends 10 and the middle part 11 of the W-shaped anchor 4 are fixed to the lower surface of the vertical connecting column 2 or the horizontal connecting column 3, and the W-shaped anchor 4 is set to be hollow. The two top ends 10 are connected to the vertical connecting column 2 or the horizontal connecting column 3. By setting the anchor 4 to be W-shaped, the W-shaped anchor 4 can have a good grip on the refractory material 5 because it has four gripping roots extending into the refractory material 5. The W-shaped anchor 4 is hollow and connected to the vertical connecting column 2 or the horizontal connecting column 3, so that cooling gas or liquid can pass through the inside of the W-shaped anchor 4, which greatly enhances the cooling effect on the anchor 4, so that the anchor 4 will not melt and deform due to high temperature, thereby ensuring the grip of the anchor 4 on the refractory material 5 and further improving the service life of the cover.

[0034] An air inlet 12 is provided at one end of the transverse connecting column 3, and an air outlet 13 is provided at the other end thereof, and a partition 14 is fixed near the upper end of the interior of the transverse connecting column 3, and an air vent 15 is left between the left end of the partition 14 and the left inner wall of the transverse connecting column 3, and a discharge port 16 is opened near the right end of the partition 14, and a container 17 is fixed to the lower surface of the partition 14, and the container 17 is filled with heat-absorbing balls 18, and the container 17 includes a left vertical plate 19 and a right vertical plate 20 fixedly connected to the partition 14, and the lower end of the left vertical plate 19 is fixed with one end of a first inclined plate 21 inclined to the lower right, and the lower end of the right vertical plate 20 is fixed with a second inclined plate 22 inclined to the lower left, and the lower right end of the first inclined plate 21 and the lower right end of the second inclined plate 22 are fixed. The upper end of the connecting pipe 23 is connected between the lower left end, and the lower end of the connecting pipe 23 is connected to the right top end 10 of the leftmost anchor 4, and the diameter of the connecting pipe 23 is smaller than the diameter of the heat-absorbing ball 18. A feed port 24 is provided on the partition 14 just above the connecting pipe 23. When working, the cooling gas (this setting is only for the case of gas cooling) enters from the air inlet 12. After the cooling gas enters from the air inlet 12, a part of it enters the channel formed between the partition 14 and the top plate of the horizontal connecting column 3 from the air vent 15, a part of it will enter the channel formed between the first inclined plate 21, the second inclined plate 22 and the bottom plate of the horizontal connecting column 3, and another part of it will enter the W-shaped anchor 4 on the leftmost side. The cooling gas passes through the W-shaped anchor 4, which has a good cooling effect on it. At the same time, the cooling gas comes out from the other end of the W-shaped anchor 4, which will blow the heat-absorbing ball 18 above the connecting pipe 23 upward, and the heat-absorbing ball 18 will be blown to the feeding port 24 just above it, and then enter the channel between the partition 14 and the top plate of the horizontal connecting column 3. At the same time, the heat-absorbing ball 18 entering the channel between the partition 14 and the top plate of the horizontal connecting column 3 will be affected by the horizontal airflow from the vent 15, and then the heat-absorbing ball 18 at the feeding port 24 will be blown toward the discharge port 16 at the right end, until it falls back into the container 17 from the discharge port 16, so that the heat-absorbing ball 18 in the container 17 enters The heat absorbing balls 18 perform a large-scale cyclic motion. During the cyclic motion, the heat absorbing balls 18 absorb heat efficiently, quickly and evenly. On the other hand, the heat absorbed by the heat absorbing balls 18 during the motion can be efficiently taken away by the cooling gas. The heat absorbing balls 18 will not be stacked together, which will make it difficult for the heat to dissipate. Ultimately, the cooling effect is greatly improved, so that the vertical connecting columns 2, the horizontal connecting columns 3 and the W-shaped anchors 4 will not melt due to high temperature. In order to make the heat absorbing balls 18 lighter and easier to blow upwards, the heat absorbing balls 18 can be hollow. The heat absorbing balls 18 are made of heat absorbing materials or refractory materials.The front and rear surfaces of the connecting pipe 23 are not connected to the front and rear inner walls of the transverse connecting column 3. Therefore, the cooling gas can pass through both sides of the connecting pipe 23, enter the channel formed between the second inclined plate 22 and the bottom plate of the transverse connecting column 3, and then enter the other W-shaped anchors 4 connected to the channel, thereby cooling the other W-shaped anchors 4. In this way, when the temperature of the molten steel in the tundish is transferred to the heat-absorbing balls 18, most of the heat will be absorbed by the heat-absorbing balls 18, and only a small amount will continue to transfer upward. This relatively has a certain insulation effect on the part below the heat-absorbing balls 18, which meets the insulation effect of the tundish cover. At the same time, it will not cause the part above the heat-absorbing balls 18 to heat up too quickly or too high. If the upper surface of the tundish cover heats up too quickly or too high, it will be dangerous because the upper surface may come into contact with other external objects. If the temperature is too high, it is very likely to ignite these objects, thereby causing a fire, which is very dangerous. Therefore, the provision of the heat-absorbing balls 18 not only has a good insulation effect on the lower part, but also prevents the temperature above it from rising too quickly or too high.

[0035] The left vertical plate 19 and the first inclined plate 21 are set to be non-hollow, and the second inclined plate 22 is set to be grid-shaped hollow, wherein the left vertical plate 19 is set to be non-hollow, so that when the cooling gas comes in from the air inlet 12 and enters the channel formed by the second inclined plate 22 and the inner bottom surface of the horizontal connecting column 3, the air flow speed will be accelerated, which makes it easier for the cooling gas to enter the W-shaped anchor 4, thereby playing a good cooling effect on the anchor 4; wherein the second inclined plate 22 is set to be grid-shaped hollow, so that the cooling gas entering between the second inclined plate 22 and the inner bottom surface of the horizontal connecting column 3 will have a better cooling effect on the heat-absorbing ball 18 above the second inclined plate 22, and at the same time accelerate the movement of the heat-absorbing ball 18 to a certain extent, accelerate heat dissipation, and at the same time play a role of dredging to a certain extent, ensuring the smooth circulation of the heat-absorbing ball 18; in order to ensure that the cooling gas can smoothly enter the W-shaped anchor 4, an exhaust fan can be set at its upper right end for exhaust.

[0036] The partition 14 is set to be inclined with the left side higher and the right side lower. An arc-shaped cover 25 is fixed to the bottom of the feeding port 24, wherein the partition 14 is set to be higher on the left side and lower on the right side, so that the heat-absorbing balls 18 blown into the feeding port 24 can roll toward the lower feeding port 16; the setting of the arc-shaped cover 25 makes it easier for the heat-absorbing balls 18 to be sucked into the feeding port 24.

[0037] A suction fan 26 is fixed on the inner wall of the upper left end of the leftmost anchor 4 on the horizontal connecting column 3. The setting of the suction fan 26 can quickly suck the cooling gas into the leftmost anchor 4, greatly increasing the flow rate of the gas in the anchor 4, thereby making the cooling effect of the anchor 4 better, and more importantly, it can ensure that the heat-absorbing ball 18 is blown into the feed port 24 to ensure the normal circulation of the heat-absorbing ball 18.

[0038] A plurality of impact mechanisms 27 are fixed on the inner bottom surface of the transverse connecting column 3. The impact mechanism 27 includes a first spring 28 fixed on the inner bottom surface of the transverse connecting column 3. A first baffle 29 is fixed to the left side of the first spring 28. The lower end of the first baffle 29 does not contact the inner bottom surface of the transverse connecting column 3. The upper end of the first baffle 29 is fixed with the lower end of the second baffle 30 tilted to the upper right. The upper end of the second baffle 30 is fixed with an impact block 31. The impact block 31 is cylindrical. When the cooling gas blows into the channel between the second inclined plate 22 and the transverse connecting column 3, the first baffle 29 and the second baffle 30 are affected by the cooling gas. The effect will tilt to the right, thereby causing the first spring 28 fixedly connected to the first baffle 29 to tilt to the right. When the speed of the cooling gas becomes smaller, the first spring 28 will rebound, and at this time the impact block 31 will impact the second inclined plate 22. In this way, through the change of the flow rate of the cooling gas, the impact block 31 can repeatedly impact the second inclined plate 22, thereby accelerating the relative movement between the heat-absorbing balls 18 thereon, thereby accelerating the cooling effect of the heat-absorbing balls 18, and also playing the effect of clearing the stacked heat-absorbing balls 18, ensuring the smooth circulation of the heat-absorbing balls 18.

[0039] Several impact mechanisms 27 are fixed on the inner bottom surface of the transverse connecting column 3, and the impact mechanism 27 includes a first spring 28 fixed on the inner bottom surface of the transverse connecting column 3, and a first baffle 29 is fixed on the left side of the first spring 28. The lower end of the first baffle 29 does not contact the inner bottom surface of the transverse connecting column 3, and its upper end is hinged to the lower end of the second baffle 30 inclined to the upper right, and the upper end of the second baffle 30 is fixed with an impact block 31, and one end of several second springs 32 is fixed on the right side of the second baffle 30, and the other end of the second spring 32 is fixed to the upper end of the first spring 28. By hingedly connecting the upper end of the first baffle 29 to the lower end of the second baffle 30 and arranging the second spring 32 on the right side of the second baffle 30, the second baffle 30 is more easily blown by the cooling gas, thereby making the effect of knocking and impacting the second inclined plate 22 better.

[0040] The impact mechanism 27 is arranged at the interval between two adjacent W-shaped anchors 4, because this interval is where two cooling gases converge, one is the cooling gas from the channel formed between the second inclined plate 22 and the bottom surface of the transverse connecting column 3, and the other is from the W-shaped anchor 4. The two air flows converge here, which makes the blowing force on the impact mechanism 27 stronger, and ultimately makes the impact effect on the second inclined plate 22 better.

[0041] A number of Y-shaped anchor nails 33 are fixed on the upper surface and side surfaces of the vertical connecting column 2 and the horizontal connecting column 3. By setting the Y-shaped anchor nails 33 on the side surface, the gripping force on the refractory material 5 is increased in the horizontal direction, which further prevents the refractory material 5 from breaking and falling off. Y-shaped anchor nails 33 are set on the upper surfaces of the vertical connecting column 2 and the horizontal connecting column 3, thereby increasing the gripping force on the refractory material 5 above the vertical connecting column 2 and the horizontal connecting column 3, thereby further enhancing the effect of preventing the refractory material 5 from breaking and falling off.

[0042] Working principle: When working, just open the cooling circulation device 6 and pass gas into the input pipe 7. The ventilation speed can be adjusted as needed. The gas passing through the vertical connecting column 2, the horizontal connecting column 3 and the W-shaped anchor 4 is output from the output pipe 8 and returned to the cooling circulation device 6 for cooling. This cycle repeats. When the cooling gas passes through the horizontal connecting column 3, the cooling gas first enters from the air inlet 12. After entering from the air inlet 12, part of the cooling gas enters from the vent 15 into the space formed between the partition 14 and the top plate of the horizontal connecting column 3. In the channel, a part will enter the channel formed between the first inclined plate 21, the second inclined plate 22 and the bottom plate of the horizontal connecting column 3, and the other part will enter the W-shaped anchor 4 on the far left. In this way, the cooling gas passes through the W-shaped anchor 4 and has a good cooling effect on it. At the same time, the cooling gas comes out from the other end of the W-shaped anchor 4, which will blow the heat-absorbing ball 18 above the connecting pipe 23 upward, and the heat-absorbing ball 18 will be blown to the feed port 24 just above it, and then enter the channel between the partition 14 and the top plate of the horizontal connecting column 3. At the same time, it enters the partition 14 and The heat-absorbing balls 18 in the channel between the top plates of the horizontal connecting columns 3 will be affected by the horizontal airflow from the vent 15, and then the heat-absorbing balls 18 at the feeding port 24 will be blown toward the discharge port 16 at the right end until they fall back into the container 17 from the discharge port 16. In this way, the heat-absorbing balls 18 in the container 17 will undergo a large-scale circulation motion. During the circulation motion, the heat-absorbing balls 18 absorb heat efficiently, quickly and evenly. On the other hand, the heat absorbed by the heat-absorbing balls 18 during the motion can also be efficiently taken away by the cooling gas, and no heat absorption will occur. The balls 18 are stacked together, which makes it difficult for the heat on them to dissipate, and ultimately greatly improves the cooling effect, so that the vertical connecting column 2, the horizontal connecting column 3 and the W-shaped anchor 4 will not melt due to high temperature; in addition, due to the effect of airflow, the first spring 28 will swing left and right, and can repeatedly collide with the second inclined plate 22, thereby accelerating the relative movement between the heat-absorbing balls 18 thereon, thereby accelerating the cooling effect of the heat-absorbing balls 18, and also playing the effect of clearing the stacked heat-absorbing balls 18, ensuring the smooth circulation of the heat-absorbing balls 18.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tundish cover with a long service life, characterized in that: The invention comprises an outer frame (1), wherein a plurality of vertical connecting columns (2) are fixed on the inner wall of the outer frame (1), a plurality of transverse connecting columns (3) are fixed between two adjacent vertical connecting columns (2), a plurality of anchors (4) are fixed on the vertical connecting columns (2) and the transverse connecting columns (3), a refractory material (5) is poured between the outer frame (1), the vertical connecting columns (2) and the transverse connecting columns (3), and the vertical connecting columns (2) and the transverse connecting columns (3) are configured to be hollow and interconnected, an input pipe (7) of a cooling circulation device (6) is connected to the leftmost vertical connecting column (2), and an output pipe (8) of the cooling circulation device (6) is connected to the rightmost vertical connecting column (2), and a hook (9) is fixed on the side of the outer frame (1); The anchor (4) is fixed to the lower surface of the vertical connecting column (2) and the transverse connecting column (3), and its shape is set to be W-shaped, and the two top ends (10) and the middle part (11) of the W-shaped anchor (4) are both fixed to the lower surface of the vertical connecting column (2) or the transverse connecting column (3), and the W-shaped anchor (4) is set to be hollow, and the two top ends (10) are connected to the vertical connecting column (2) or the transverse connecting column (3); One end of the transverse connecting column (3) is provided with an air inlet (12), and the other end thereof is provided with an air outlet (13), and a partition (14) is fixed near the upper end of the interior of the transverse connecting column (3), a vent (15) is left between the left end of the partition (14) and the left inner wall of the transverse connecting column (3), a discharge port (16) is provided near the right end of the partition (14), and a container (17) is fixed on the lower surface of the partition (14), and the container (17) is filled with heat-absorbing balls (18), and the container (17) includes a left vertical plate (19) and a right vertical plate (20) fixedly connected to the partition (14). 0), one end of a first inclined plate (21) inclined toward the lower right is fixed to the lower end of the left vertical plate (19), and a second inclined plate (22) inclined toward the lower left is fixed to the lower end of the right vertical plate (20), the upper end of a connecting pipe (23) is connected between the lower right end of the first inclined plate (21) and the lower left end of the second inclined plate (22), the lower end of the connecting pipe (23) is connected to the right top end (10) of the leftmost anchor (4), and the diameter of the connecting pipe (23) is smaller than the diameter of the heat-absorbing ball (18), and a feed port (24) is provided directly above the connecting pipe (23) and on the partition (14).

2. The tundish cover with a long service life according to claim 1, characterized in that: The left vertical plate (19) and the first inclined plate (21) are configured to be non-hollow, and the second inclined plate (22) is configured to be grid-shaped and hollow.

3. The tundish cover with a long service life according to claim 1, characterized in that: The partition (14) is arranged in an inclined shape with the left side higher and the right side lower, and an arc-shaped cover (25) is fixed to the bottom of the feed port (24).

4. The tundish cover with a long service life according to claim 1, characterized in that: A suction fan (26) is fixed on the inner wall of the upper left end of the anchoring piece (4) at the leftmost end of the transverse connecting column (3).

5. The tundish cover with a long service life according to claim 1, characterized in that: A plurality of impact mechanisms (27) are fixed on the inner bottom surface of the transverse connecting column (3), and the impact mechanism (27) includes a first spring (28) fixed on the inner bottom surface of the transverse connecting column (3). A first baffle (29) is fixed on the left side of the first spring (28). The lower end of the first baffle (29) does not contact the inner bottom surface of the transverse connecting column (3), and the upper end of the first baffle (29) is fixed with the lower end of a second baffle (30) tilted to the upper right. The upper end of the second baffle (30) is fixed with an impact block (31), and the impact block (31) is cylindrical.

6. The tundish cover with a long service life according to claim 1, characterized in that: A plurality of impact mechanisms (27) are fixed on the inner bottom surface of the transverse connecting column (3), and the impact mechanism (27) includes a first spring (28) fixed on the inner bottom surface of the transverse connecting column (3), a first baffle (29) is fixed on the left side of the first spring (28), the lower end of the first baffle (29) does not contact the inner bottom surface of the transverse connecting column (3), and the upper end of the first baffle (29) is hinged to the lower end of a second baffle (30) inclined to the upper right, an impact block (31) is fixed on the upper end of the second baffle (30), and one end of a plurality of second springs (32) is fixed on the right side surface of the second baffle (30), and the other end of the second spring (32) is fixed to the upper end of the first spring (28).

7. A tundish cover with a long service life according to claim 5 or 6, characterized in that: The impact mechanism (27) is arranged at the interval between two adjacent W-shaped anchors (4).

8. The tundish cover with a long service life according to claim 1, characterized in that: A plurality of Y-shaped anchoring nails (33) are fixed on the upper surfaces and side surfaces of the vertical connecting column (2) and the horizontal connecting column (3).

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