A continuous casting tundish cover for continuous casting production

Abstract

The invention discloses a continuous casting tundish cover for continuous casting production, which relates to the technical field of continuous casting production, and comprises a tundish and a crossbar, wherein one side of the tundish is symmetrically fixedly provided with the crossbar; and the upper surface of the tundish is symmetrically provided with a tundish cover body. The invention prolongs the travel of molten steel when flowing into the tundish through the arrangement of a long shroud, and can protect the pouring port in the middle of the tundish cover body, so as to avoid the molten steel in the ladle from splashing when entering the tundish, thereby reducing the service life of the tundish cover body. In addition, during the installation of the long shroud, the long shroud can cooperate with the transmission component to open the ventilation component through its own weight, and before the molten steel flows into the tundish, argon gas is evenly and quickly filled into the interior of the tundish, and the blown argon gas can form a protective atmosphere, reduce the contact between the molten steel and the air, thereby reducing the generation of secondary oxides, thereby improving the continuous casting quality.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting production, and in particular to a continuous casting tundish cover for continuous casting production. Background Art

[0002] Continuous casting, short for continuous steel casting, is an important process in steel production. It uses molten steel to solidify and shape. Compared with the traditional mold casting method, it has significant advantages, such as greatly improving the metal recovery rate and the quality of the ingot, as well as saving energy. There are two main types of ladle covers used in continuous casting production: steel ladle cover and tundish cover. The tundish cover also plays an important role in continuous casting production. First, it is used to keep the flame from reaching the refractory materials at the bottom and sides of the ladle when baking the tundish, and bake the refractory materials of the tundish to about 1100℃ to achieve red envelope steel. Secondly, during the casting process, the tundish cover plays a role of heat preservation. Reduce the heat dissipation of molten steel. In addition, it can also provide heat insulation protection for the crossbeam of the stopper mechanism and reduce the radiation of molten steel in the tundish. At present, the tundish cover will have problems of deformation and falling off of refractory materials and low service life during normal use due to its own process and the stability of the use environment. During the baking process, the fallen refractory materials may easily cause production accidents caused by blockage during the pouring process. When the molten steel flows from the ladle to the tundish, the splashing of molten steel will adhere to the lower surface of the tundish cover, which will affect the use of the tundish cover for a long time. Therefore, it is necessary to provide a continuous casting tundish cover for continuous casting production to solve the above technical problems. Summary of the invention

[0003] The object of the present invention is to provide a continuous casting tundish cover for continuous casting production to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A continuous casting tundish cover for continuous casting production comprises a tundish and a cross bar, one side of the tundish is symmetrically fixedly mounted with the cross bar; a pair of tundish cover bodies are symmetrically arranged on the upper surface of the tundish, four corners of the upper surface of the tundish cover body are fixedly mounted with hooks, a plurality of steel rings are equidistantly fixedly mounted on the surface of the tundish cover body, a protective ring is fixedly mounted on one end of the tundish cover body, a mounting ring is fixedly mounted on the top of the protective ring, a connecting plate is fixedly mounted on the outer wall of the mounting ring, a vertical plate is symmetrically fixedly mounted on the upper surface of the connecting plate, a long water nozzle is inserted between the two mounting rings, and a plurality of ring-shaped outer walls of the top of the long water nozzle are fixedly mounted A pressure plate with a shape distribution, a pressure block is provided at the top of the pressure plate, and the pressure plate and the top of the pressure block are plugged into each other, a transmission component is fixedly installed on one side of the mounting ring, and one end of the transmission component passes through the side wall of the vertical plate and is squeezed and matched with the pressure plate, the transmission component comprises: a pressure block, the pressure block is slidably connected to the inside of the top of the vertical plate, an extension rod is fixedly installed at the bottom end of the pressure block, and the bottom end of the extension rod passes through the vertical plate and is fixedly connected to the upper surface of the matching plate, the inner side of the matching plate is slidably connected to the outer wall of the mounting ring, and a connecting rod is fixedly installed on the lower end surface of the matching plate, and the connecting rod passes through the side wall of the protective ring and is fixedly connected to the upper surface of the protective plate.

[0006] The above technical solution is adopted. At present, in this solution, the tundish cover will have problems of deformation and falling off of refractory materials and low service life during normal use due to its own process and the stability of the use environment. During the baking process, the fallen refractory materials are easy to cause production accidents caused by blockage during the pouring process. When the molten steel flows from the ladle to the tundish, the splashing of the molten steel will adhere to the lower surface of the tundish cover, which will affect the use of the tundish cover for a long time. In this solution, when processing, the staff first covers the tundish cover body on the top of the tundish, and the two tundish cover bodies are spliced ​​with each other. At this time, the staff inserts the long water inlet between the two mounting rings. As the long water inlet is When the opening is inserted, the pressure plate will squeeze the pressure block. As the pressure block is squeezed by the pressure plate, the pressure block will synchronously press down the matching plate through the extension rod, and the matching plate will drive the protective plate to move downward through the connecting rod installed at its bottom, so as to achieve the separation between the protective ring and the protective plate. The device is started by gravity, so that when the device is processing, the staff does not need to start the device personally, thereby ensuring the processing safety of the device during processing. In addition, the device is started by a mechanical transmission structure, which has the advantages of high transmission efficiency, high reliability and long service life. It can work in a high temperature environment, reduce the failure rate of the device, and enable the device to operate stably.

[0007] A further improvement of the technical solution of the present invention is that an auxiliary spring is fixedly installed on the inner top of the vertical plate, and the top of the auxiliary spring is fixedly connected to the lower surface of the pressure block, and a protrusion that cooperates with the auxiliary spring is arranged inside the top of the vertical plate.

[0008] By adopting the above technical solution, the auxiliary spring at the top of the vertical plate can reset the pressure block, so that the pressure block returns to its initial position when it is not squeezed by the pressure plate. The protrusion at the top of the vertical plate can increase the installation stability between the auxiliary spring and the vertical plate.

[0009] A further improvement of the technical solution of the present invention is that the top end of the protective plate is slidably connected to the bottom end of the protective ring, and the bottom end of the protective ring is provided with a sliding groove that cooperates with the protective plate.

[0010] By adopting the above technical solution, the top of the protective plate and the protective ring are slidably connected, which can increase the installation fit between the two and increase the compactness of the device.

[0011] A further improvement of the technical solution of the present invention is that: the transmission assembly also includes a mounting frame, two of the mounting frames are symmetrically fixedly installed on the top of the mounting ring, a cross plate is fixedly installed on one side of the top of the mounting frame, a rib plate is symmetrically fixedly installed on the upper surface of the cross plate, a pair of the rib plates are rotatably connected with matching gears, and the two matching gears are meshingly connected, a tooth plate is fixedly installed on the upper surface of the matching plate, and the tooth plate is meshingly connected with one of the matching gears, and a mounting rod is fixedly installed on one end of the other matching gear, one end of the mounting rod passes through the side wall of the rib plate and is connected to one end of the ventilation assembly, and one end of the ventilation assembly passes through the interior of the mounting ring and is connected to the protective ring.

[0012] The above-mentioned technical scheme is adopted. In this scheme, the matching plate is pressed down by the extension rod, and the tooth plate arranged on the top of the matching plate will move downward synchronously. As the tooth plate moves, the tooth plate will drive the matching gear to rotate, and one of the matching gears is connected to the ventilation assembly through the mounting rod. As the matching gear rotates, the matching gear can cooperate with the opening of the ventilation assembly, and argon is filled into the interior of the tundish and the tundish cover body through the ventilation assembly. As the argon is filled, the interior of the tundish and the tundish cover body is filled with argon, and the blown argon can form a layer of protective atmosphere, reducing the contact between molten steel and air, thereby reducing the generation of secondary oxides, thereby improving the continuous casting quality.

[0013] A further improvement of the technical solution of the present invention is that a matching groove for slidingly matching with the tooth plate is provided in the center of the mounting frame.

[0014] By adopting the above technical solution, the arrangement of the matching groove at the top of the mounting frame can increase the installation matching degree between the mounting frame and the tooth plate, so that the tooth plate can realize its own lifting and lowering through the matching plate, which can increase the stability of the device.

[0015] A further improvement of the technical solution of the present invention is that the ventilation assembly includes a valve, one end of the valve is fixedly connected to one end of the mounting rod, a bent pipe is fixedly installed on the bottom end of the valve, the end of the bent pipe away from the valve is fixedly connected to one end of the branch duct, the inner circle of the branch duct is equidistantly fixedly connected with nozzles, and one end of the nozzle passes through the side walls of the protective ring and the mounting ring and is installed on the lower surface of the protective ring, and a connecting pipe is fixedly installed on the top end of the valve.

[0016] The above technical solution is adopted. In this solution, when the long water nozzle is inserted into the interior of the mounting ring, the tooth plate rotates in coordination with the matching gear, so that the matching gear drives the valve to open through the mounting rod. As the valve opens, the connecting pipe transports the argon gas inside the gas source through the curved pipe to the branch duct, and the argon gas is transported to the interior of the tundish and the tundish cover body through the nozzle through the branch duct. By continuously adding argon gas, the air content inside the tundish and the tundish cover body is reduced, thereby reducing the contact between molten steel and air, thereby reducing the generation of secondary oxides, and improving the continuous casting quality.

[0017] A further improvement of the technical solution of the present invention is that a limiting plate is fixedly installed between the two vertical plates, and the limiting plate is connected to the top end of the bent pipe.

[0018] By adopting the above technical solution, the setting of the limiting plate in the solution can install the bent pipe, which can increase the installation stability of the bent pipe, thereby making the device smoother when used.

[0019] A further improvement of the technical solution of the present invention is that a groove which is adapted to accommodate the nozzle is provided at the top of the protective plate.

[0020] By adopting the above technical solution, the groove at the top of the protective plate in this solution can protect the end of the nozzle when the device is not in use, so that the nozzle can be prevented from being collided and damaged when the middle ladle cover body is moved, thereby avoiding subsequent maintenance and increasing the convenience of the device when in use.

[0021] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0022] 1. The present invention provides a continuous casting tundish cover for continuous casting production. By setting a long shroud, the travel of molten steel when flowing into the tundish is extended, and the pouring port in the middle of the tundish cover body can be protected to avoid splashing of molten steel when the molten steel in the ladle enters the tundish, thereby reducing the service life of the tundish cover body. In addition, during the installation of the long shroud, the long shroud can cooperate with the transmission component to open the ventilation component through its own weight, and argon gas is evenly and quickly filled into the interior of the tundish before the molten steel flows into the tundish, thereby reducing the air content in the tundish. The blown argon gas can form a protective atmosphere to reduce the contact between the molten steel and the air, thereby reducing the generation of secondary oxides, thereby improving the continuous casting quality.

[0023] 2. The present invention provides a continuous casting tundish cover for continuous casting production, which uses gravity to drive the start of the ventilation component, so that when the device is in processing, the staff does not need to start the device personally, thereby ensuring the processing safety of the device during processing. In addition, the start of the device adopts a mechanical transmission structure for transmission, which has the advantages of high transmission efficiency, high reliability and long service life. It can work in a high temperature environment, reduce the failure rate of the device, and allow the device to operate stably.

[0024] 3. The present invention provides a continuous casting tundish cover for continuous casting production. The protective plate is arranged to protect the end of the nozzle when the device is not in use. When the device is in use, the protective plate will move a short distance under the action of the transmission component to open the space around the end of the nozzle, so that the nozzle can better fill argon into the interior of the tundish. In addition, the protective plate can prevent molten steel from splashing onto the end of the nozzle, and can also protect the nozzle, thereby increasing the stability of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the structure of the present invention from the first viewing angle as a whole;

[0027] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the whole invention;

[0028] Figure 3 It is a structural schematic diagram of the tundish and the tundish cover body of the present invention from a first viewing angle;

[0029] Figure 4 It is a schematic diagram of the structure of the tundish of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the tundish cover body of the present invention from a first viewing angle;

[0031] Figure 6 It is a structural schematic diagram of the tundish cover body of the present invention from a second viewing angle;

[0032] Figure 7 It is a schematic diagram of the structure of the threaded steel mesh of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of a local first viewing angle of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of a local second viewing angle of the present invention;

[0035] Fig.10 It is a schematic diagram of the structure of a part of the present invention from a third viewing angle;

[0036] Fig.11 It is a structural schematic diagram of a local fourth viewing angle of the present invention;

[0037] Fig.12 It is a structural schematic diagram of a partial fifth viewing angle of the present invention;

[0038] Fig.13 It is a schematic diagram of the structure of a local sixth viewing angle of the present invention;

[0039] In the figure: 1. tundish; 2. cross bar; 3. tundish cover body; 4. threaded steel grid; 5. hook; 6. steel ring; 7. protection ring; 8. mounting ring; 9. connecting plate; 10. vertical plate; 11. long water outlet; 12. pressure plate; 13. pressure block; 14. extension rod; 15. auxiliary spring; 16. matching plate; 17. connecting rod; 18. protection plate; 19. mounting frame; 20. cross plate; 21. rib plate; 22. matching gear; 23. tooth plate; 24. mounting rod; 25. valve; 26. elbow; 27. branch duct; 28. nozzle; 29. ​​connecting pipe; 30. limiting plate. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with embodiments:

[0041] Example 1

[0042] like Figure 1-13As shown, the present invention provides a continuous casting tundish cover for continuous casting production, comprising a tundish 1 and a cross bar 2, wherein the cross bar 2 is symmetrically fixedly installed on one side of the tundish 1; the characteristics are as follows: a pair of tundish cover bodies 3 are symmetrically provided on the upper surface of the tundish 1, hooks 5 are fixedly installed at the four corners of the upper surface of the tundish cover body 3, a plurality of steel rings 6 are fixedly installed at equal intervals on the surface of the tundish cover body 3, a protective ring 7 is fixedly installed at one end of the tundish cover body 3, a mounting ring 8 is fixedly installed at the top of the protective ring 7, a connecting plate 9 is fixedly installed on the outer wall of the mounting ring 8, a vertical plate 10 is symmetrically fixedly installed on the upper surface of the connecting plate 9, a long water nozzle 11 is inserted between the two mounting rings 8, and a plurality of pressure plates distributed in a ring are fixedly installed on the outer wall of the top of the long water nozzle 11 12, a pressing block 13 is provided at the top of the pressing plate 12, and the pressing plate 12 and the top of the pressing block 13 are plugged into each other, a transmission component is fixedly installed on one side of the mounting ring 8, and one end of the transmission component passes through the side wall of the vertical plate 10 and is squeezed and matched with the pressing plate 12, and the transmission component includes: a pressing block 13, the pressing block 13 is slidably connected to the top of the vertical plate 10, an extension rod 14 is fixedly installed at the bottom end of the pressing block 13, and the bottom end of the extension rod 14 passes through the vertical plate 10 and is fixedly connected to the upper surface of the matching plate 16, the inner side of the matching plate 16 is slidably connected to the outer wall of the mounting ring 8, and a connecting rod 17 is fixedly installed on the lower end surface of the matching plate 16, and the connecting rod 17 passes through the side wall of the protective ring 7 and is fixedly connected to the upper surface of the protective plate 18.

[0043] In this embodiment, when processing, the staff first covers the middle ladle cover body 3 on the top of the middle ladle 1, and the two middle ladle cover bodies 3 are spliced ​​with each other. At this time, the staff inserts the long water nozzle 11 between the two mounting rings 8. As the long water nozzle 11 is inserted, the pressure plate 12 will squeeze the pressure block 13. As the pressure block 13 is squeezed by the pressure plate 12, the pressure block 13 will synchronously press down the matching plate 16 through the extension rod 14. The matching plate 16 will drive the protective plate 18 to move downward through the connecting rod 17 installed at its bottom to achieve the separation between the protective ring 7 and the protective plate 18. The device is started by gravity, so that when the device is processed, the staff does not need to start the device personally, thereby ensuring the processing safety of the device during processing. In addition, the device is started by a mechanical transmission structure, which has the advantages of high transmission efficiency, high reliability and long service life. It can work in a high temperature environment, reduce the failure rate of the device, and enable the device to operate stably.

[0044] It should also be noted that: when the tundish cover body 3 is produced, the threaded steel grid 4 is used as the installation frame, which can increase the contact area between the refractory material and the threaded steel grid 4, increase its stability during use, and facilitate the subsequent production and processing of the tundish cover body 3.

[0045] like Fig.12As shown, preferably, an auxiliary spring 15 is fixedly installed at the inner top of the vertical plate 10, and the top of the auxiliary spring 15 is fixedly connected to the lower surface of the pressing block 13, and a protrusion that cooperates with the auxiliary spring 15 is arranged inside the top of the vertical plate 10.

[0046] In this embodiment, the auxiliary spring 15 at the top of the vertical plate 10 can reset the pressure block 13, so that the pressure block 13 returns to its original position when it is not squeezed by the pressure plate 12. The protrusion at the top of the vertical plate 10 can increase the installation stability between the auxiliary spring 15 and the vertical plate 10.

[0047] like Fig.11 As shown, preferably, the top end of the protective plate 18 is slidably connected to the bottom end of the protective ring 7 , and the bottom end of the protective ring 7 is provided with a sliding groove that cooperates with the protective plate 18 .

[0048] In this embodiment, the top end of the protective plate 18 is slidably connected to the protective ring 7, which can increase the installation fit between the two and increase the compactness of the device.

[0049] Example 2

[0050] like Figure 8-13 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the transmission assembly also includes a mounting frame 19, two mounting frames 19 are symmetrically fixedly installed on the top of the mounting circle 8, a cross plate 20 is fixedly installed on one side of the top of the mounting frame 19, and a rib plate 21 is symmetrically fixedly installed on the upper surface of the cross plate 20, a pair of rib plates 21 are rotatably connected with a matching gear 22, and the two matching gears 22 are meshingly connected, a tooth plate 23 is fixedly installed on the upper surface of the matching plate 16, and the tooth plate 23 is meshingly connected with one of the matching gears 22, and a mounting rod 24 is fixedly installed on one end of the other matching gear 22, one end of the mounting rod 24 passes through the side wall of the rib plate 21 to be interconnected with one end of the ventilation assembly, and one end of the ventilation assembly passes through the interior of the mounting circle 8 to be interconnected with the protective ring 7.

[0051] In this embodiment, the mating plate 16 is pressed down by the extension rod 14, and the tooth plate 23 arranged on the top of the mating plate 16 will move downward synchronously. As the tooth plate 23 moves, the tooth plate 23 will drive the mating gear 22 to rotate, and one of the mating gears 22 is connected to the ventilation component through the mounting rod 24. As the mating gear 22 rotates, the mating gear 22 can cooperate with the opening of the ventilation component to fill argon into the interior of the tundish 1 and the tundish cover body 3 through the ventilation component. As the argon is filled, the interior of the tundish 1 and the tundish cover body 3 is filled with argon, and the blown argon can form a layer of protective atmosphere to reduce the contact between molten steel and air, thereby reducing the generation of secondary oxides, thereby improving the continuous casting quality.

[0052] like Fig.12 As shown, preferably, a matching groove for slidingly matching with the tooth plate 23 is opened in the center of the mounting frame 19 .

[0053] In this embodiment, the arrangement of the matching groove at the top of the mounting frame 19 can increase the degree of installation matching between the mounting frame 19 and the tooth plate 23, so that the tooth plate 23 can realize its own lifting and lowering through the matching plate 16, which can increase the stability of the device.

[0054] Example 3

[0055] like Figure 8-13 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the ventilation component includes a valve 25, one end of the valve 25 is fixedly connected to one end of the mounting rod 24, a bend pipe 26 is fixedly installed at the bottom end of the valve 25, and the end of the bend pipe 26 away from the valve 25 is fixedly connected to one end of the branch duct 27, the inner circle of the branch duct 27 is equidistantly fixedly connected with a nozzle 28, and one end of the nozzle 28 passes through the side walls of the protection ring 7 and the mounting ring 8 and is installed on the lower surface of the protection ring 7, and a connecting pipe 29 is fixedly installed at the top of the valve 25.

[0056] In this embodiment, when the long water nozzle 11 is inserted into the interior of the mounting ring 8, at this time, the tooth plate 23 rotates in coordination with the matching gear 22, so that the matching gear 22 drives the valve 25 to open through the mounting rod 24. As the valve 25 opens, the connecting pipe 29 transports the argon gas inside the gas source through the bend pipe 26 to the branch duct 27, and the argon gas is transported to the interior of the tundish 1 and the tundish cover body 3 through the nozzle 28 through the branch duct 27. By continuously adding argon gas, the air content inside the tundish 1 and the tundish cover body 3 is reduced, thereby reducing the contact between the molten steel and the air, thereby reducing the generation of secondary oxides, and thus improving the continuous casting quality.

[0057] like Figure 8-11 As shown, preferably, a limiting plate 30 is fixedly installed between the two vertical plates 10 , and the limiting plate 30 is connected to the top end of the curved pipe 26 .

[0058] In this embodiment, the setting of the limiting plate 30 can be used to install the curved pipe 26, which can increase the installation stability of the curved pipe 26, thereby making the device smoother when used.

[0059] Example 4

[0060] like Fig.11 As shown, based on Example 1, the present invention provides a technical solution: preferably, a groove for accommodating and cooperating with the nozzle 28 is provided at the top of the protective plate 18 .

[0061] In this embodiment, the groove at the top of the protective plate 18 can protect the end of the nozzle 28 when the device is not in use, so that the nozzle 28 can be prevented from being collided and damaged when the intermediate cover body 3 is moved, thereby avoiding subsequent maintenance and increasing the convenience of the device when in use.

[0062] The working principle of the continuous casting tundish cover for continuous casting production is described in detail below.

[0063] like Figure 1-13 As shown, the staff first covers the middle ladle cover body 3 on the top of the middle ladle 1, and the two middle ladle cover bodies 3 are spliced ​​with each other. At this time, the staff inserts the long water nozzle 11 between the two mounting rings 8. As the long water nozzle 11 is inserted, the pressure plate 12 will squeeze the pressing block 13. As the pressing block 13 is squeezed by the pressure plate 12, the pressing block 13 will synchronously press down the matching plate 16 through the extension rod 14. The matching plate 16 will drive the protective plate 18 to move downward through the connecting rod 17 installed at its bottom, so as to realize the separation between the protective ring 7 and the protective plate 18. At the same time, the matching plate 16 is pressed down by the extension rod 14, and the tooth plate 23 set at the top of the matching plate 16 It will move downward synchronously. With the movement of the tooth plate 23, the tooth plate 23 will drive the matching gear 22 to rotate, and one of the matching gears 22 is connected to the ventilation component through the mounting rod 24. The tooth plate 23 rotates with the matching gear 22, so that the matching gear 22 drives the opening of the valve 25 through the mounting rod 24. With the opening of the valve 25, the connecting pipe 29 transports the argon gas inside the gas source through the bend pipe 26 to the branch duct 27, and the argon gas is transported to the inside of the tundish 1 and the tundish cover body 3 through the nozzle 28 through the branch duct 27. By continuously adding argon gas, the air content inside the tundish 1 and the tundish cover body 3 is reduced.

[0064] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A continuous casting tundish cover for continuous casting production, comprising a tundish (1) and a crossbar (2), wherein the crossbar (2) is symmetrically fixedly mounted on one side of the tundish (1); characterized in that: A pair of tundish cover bodies (3) are symmetrically arranged on the upper surface of the tundish (1), hooks (5) are fixedly installed at the four corners of the upper surface of the tundish cover body (3), a plurality of steel rings (6) are fixedly installed at equal intervals on the surface of the tundish cover body (3), a protective ring (7) is fixedly installed on one end of the tundish cover body (3), a mounting ring (8) is fixedly installed on the top of the protective ring (7), a connecting plate (9) is fixedly installed on the outer wall of the mounting ring (8), a vertical plate (10) is symmetrically fixedly installed on the upper surface of the connecting plate (9), a long water nozzle (11) is inserted between the two mounting rings (8), and a plurality of annularly distributed pressing plates (12) are fixedly installed on the outer wall of the top of the long water nozzle (11), a pressing block (13) is provided on the top of the pressing plate (12), and the pressing plate (12) The top of the pressure block (13) is plugged into and matched with each other. A transmission component is fixedly installed on one side of the installation ring (8), and one end of the transmission component passes through the side wall of the vertical plate (10) and is squeezed and matched with each other between the pressure plate (12). The transmission component includes: a pressure block (13), the pressure block (13) is slidably connected to the top of the vertical plate (10), an extension rod (14) is fixedly installed on the bottom end of the pressure block (13), and the bottom end of the extension rod (14) passes through the vertical plate (10) and is fixedly connected to the upper surface of the matching plate (16), the inner side of the matching plate (16) is slidably connected to the outer wall of the installation ring (8), and a connecting rod (17) is fixedly installed on the lower end surface of the matching plate (16), and the connecting rod (17) passes through the side wall of the protection ring (7) and is fixedly connected to the upper surface of the protective plate (18).

2. The continuous casting tundish cover for continuous casting production according to claim 1, characterized in that: An auxiliary spring (15) is fixedly mounted on the internal top of the vertical plate (10), and the top of the auxiliary spring (15) is fixedly connected to the lower surface of the pressing block (13). A protrusion that is mounted and matched with the auxiliary spring (15) is arranged inside the top of the vertical plate (10).

3. The continuous casting tundish cover for continuous casting production according to claim 2, characterized in that: The top end of the protection plate (18) is slidably connected to the bottom end of the protection ring (7), and the bottom end of the protection ring (7) is provided with a sliding groove that cooperates with the protection plate (18).

4. The continuous casting tundish cover for continuous casting production according to claim 3, characterized in that: The transmission assembly also includes a mounting frame (19), two mounting frames (19) are symmetrically fixedly mounted on the top of the mounting ring (8), a cross plate (20) is fixedly mounted on one side of the top of the mounting frame (19), a rib plate (21) is symmetrically fixedly mounted on the upper surface of the cross plate (20), a pair of rib plates (21) are rotatably connected with a matching gear (22), and the two matching gears (22) are meshingly connected, a tooth plate (23) is fixedly mounted on the upper surface of the matching plate (16), and the tooth plate (23) is meshingly connected with one of the matching gears (22), and a mounting rod (24) is fixedly mounted on one end of the other matching gear (22), one end of the mounting rod (24) passes through the side wall of the rib plate (21) and is connected to one end of the ventilation assembly, and one end of the ventilation assembly passes through the interior of the mounting ring (8) and is connected to the protective ring (7).

5. The continuous casting tundish cover for continuous casting production according to claim 4, characterized in that: A matching groove for slidingly matching with the tooth plate (23) is provided in the center of the mounting frame (19).

6. The continuous casting tundish cover for continuous casting production according to claim 5, characterized in that: The ventilation assembly comprises a valve (25), one end of the valve (25) is fixedly connected to one end of the mounting rod (24), a bent pipe (26) is fixedly installed at the bottom end of the valve (25), one end of the bent pipe (26) away from the valve (25) is fixedly connected to one end of a branch conduit (27), a nozzle (28) is fixedly connected to the inner circle of the branch conduit (27) at an equidistant distance, and one end of the nozzle (28) passes through the side walls of the protection ring (7) and the mounting ring (8) and is installed on the lower surface of the protection ring (7), and a connecting pipe (29) is fixedly installed at the top end of the valve (25).

7. The continuous casting tundish cover for continuous casting production according to claim 6, characterized in that: A limiting plate (30) is fixedly installed between the two vertical plates (10), and the limiting plate (30) is connected to the top end of the curved pipe (26).

8. The continuous casting tundish cover for continuous casting production according to claim 7, characterized in that: The top end of the protection plate (18) is provided with a groove for accommodating and cooperating with the nozzle (28).

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