Baking device and method for embedded continuous casting tundish submersed nozzle

Abstract

The invention provides a baking device and method for an embedded continuous casting tundish submersed nozzle. The baking device comprises a driving transmission mechanism. The driving transmission mechanism comprises a transmission sub-mechanism, and the transmission sub-mechanism is arranged on the supporting frame body so that the transmission end of the transmission sub-mechanism can move in the first direction relative to the supporting frame body; the baking mechanism comprises a rotating sub-mechanism and a baking sub-mechanism, and the rotating sub-mechanism is connected with the transmission end of the transmission mechanism so that the baking mechanism can move along with the transmission sub-mechanism in the first direction. The baking sub-mechanism is arranged on the rotating sub-mechanism, and the rotating sub-mechanism is used for driving the baking sub-mechanism to rotate along the axis of the rotating sub-mechanism. The driving transmission mechanism drives the baking mechanism to move into the submersed nozzle, the submersed nozzle is baked in a rotary mode firstly and then in a rotary and reciprocating motion mode, the submersed nozzle is evenly heated, the baking effect is good, and the situation that the casting quality is affected due to over-baking or under-baking of the submersed nozzle is avoided; meanwhile, in the baking process, on-site noise is greatly reduced.

Description

Technical Field

[0001] This application belongs to the technical field, specifically relating to a baking device and method for an embedded continuous casting tundish immersion nozzle. Background Technology

[0002] In the continuous casting process, molten steel flows from the tundish into the crystallizer. To prevent the molten steel from being exposed, an immersion nozzle is used during the flow to protect the casting process and prevent secondary oxidation. The immersion nozzle is an important refractory material used in continuous casting tundishes. It requires sufficient preheating before use. If preheating is insufficient or inadequate, the nozzle may crack, and the refractory material may develop cracks, affecting the quality of the cast billet. As the requirements for cast billet quality become increasingly stringent, integral nozzles are commonly used in tundish immersion nozzles. Straight-hole integral nozzles are often used in small-section crystallizers.

[0003] For the baking of straight-hole integral sprue nozzles, there are currently two methods: exhaust-type baking and gas-type baking. Exhaust-type baking involves using an exhaust fan at the lower end of the integral sprue nozzle to guide the flame from the tundish to the nozzle for heating. Its disadvantages are: long baking time (more than 1 hour), poor baking effect at the lower part of the nozzle, and loud exhaust noise. Gas-type baking involves using a gas device to directly heat the nozzle at the lower end. Its disadvantages are: small nozzle diameter, the gas flame cannot reach the length of the nozzle within the nozzle orifice, uneven heating and large temperature difference between the upper and lower parts of the nozzle. Summary of the Invention

[0004] Therefore, the purpose of this application is to provide a baking device and method for an embedded continuous casting tundish immersion nozzle, which at least solves one of the technical problems mentioned in the background art.

[0005] To address the aforementioned problems, the first aspect of this application provides a baking apparatus for an embedded continuous casting tundish immersion nozzle, comprising: Support frame; A drive transmission mechanism; the drive transmission mechanism includes a transmission sub-mechanism, the transmission sub-mechanism includes a transmission end, the transmission sub-mechanism is disposed on the support frame, and the transmission end of the transmission sub-mechanism is movable relative to the support frame along a first direction; A baking mechanism; the baking mechanism includes a rotating sub-mechanism and a baking sub-mechanism, the rotating sub-mechanism being connected to the transmission end of the transmission mechanism so that the baking mechanism moves along a first direction with the transmission sub-mechanism; the baking sub-mechanism is disposed on the rotating sub-mechanism, and the rotating sub-mechanism is used to drive the baking sub-mechanism to rotate along its own axis.

[0006] Optionally, the support frame includes a support tripod and a first plate, wherein the first plate is arranged along a first direction and disposed on the top of the support tripod.

[0007] Optionally, the drive transmission mechanism further includes a first drive unit disposed on the first plate; the transmission mechanism further includes a connecting end, the connecting end of the transmission mechanism being connected to the output end of the first drive unit.

[0008] Optionally, the transmission submechanism includes a gear, a rack, and a guide assembly. The gear is disposed at the output end of the first drive unit. The guide assembly is disposed on the support frame along a first direction. The rack is disposed on the guide assembly and meshes with the gear.

[0009] Optionally, the rotating submechanism includes a rotating cylinder, a rotating body, and a fixed cylinder. The fixed cylinder is connected to the transmission end of the transmission mechanism via a second plate. The rotating cylinder and the fixed cylinder are connected via the rotating body, so that the rotating cylinder rotates relative to the fixed cylinder.

[0010] Optionally, the rotating submechanism further includes a second driving unit and a transmission assembly. The transmission assembly includes a main gear and a driven gear. The driven gear is sleeved on the rotating cylinder. The main gear is located at the output end of the second driving unit and meshes with the driven gear. The second driving unit is located on the second plate.

[0011] Optionally, the baking sub-mechanism includes a first air supply pipe, a second air supply pipe, and nozzles. The first air supply pipe is arranged along a first direction and connected to the end of the rotating cylinder opposite to the rotating body, so that the first air supply pipe rotates together with the rotating cylinder. A plurality of nozzles are provided on the first air supply pipe along the first direction. The second air supply pipe is connected to the end of the fixed cylinder opposite to the rotating body, and the end of the second air supply pipe opposite to the fixed cylinder is connected to the air source.

[0012] Optionally, the baking device further includes a temperature measuring module, which is disposed on the top of the drive transmission mechanism.

[0013] Optionally, the baking device further includes at least three limiting modules, which are arranged on the support frame along a first direction.

[0014] A second aspect of this application provides a baking method for an embedded continuous casting tundish immersion nozzle baking apparatus, characterized in that it employs the baking apparatus described in any one of the above-mentioned methods for an embedded continuous casting tundish immersion nozzle, the baking method comprising: After the intermediate ladle is baked to the target pouring temperature, the baking mechanism and drive transmission mechanism are activated based on a preset time node. The drive transmission mechanism drives the baking mechanism to rise from the initial position to the working position, so that the baking sub-mechanism moves into the immersion gate. The gas flow rate is adjusted based on the stepped heating and baking curve process to perform rotary baking on the immersion nozzle; if the temperature of the immersion nozzle is not detected to reach the preset temperature target value corresponding to the current fire, the gas flow rate is dynamically adjusted based on the baking mechanism to ensure that the preset temperature target value corresponding to the current fire is reached. When the preset time node for reciprocating baking is reached, the drive transmission mechanism drives the baking sub-mechanism to reciprocate along the first direction, and continues to bake the immersion gate in a rotational and reciprocating manner until the preset target temperature of the immersion gate is reached. After baking is complete, the gas is turned off; the baking mechanism is moved to its initial position by the drive transmission mechanism, and then the drive transmission mechanism and the baking mechanism are turned off.

[0015] By employing the above technical solution, the present invention has at least the following beneficial effects: This application provides a baking device and method for an embedded continuous casting tundish immersion nozzle. The baking mechanism is driven by a drive transmission mechanism to move into the immersion nozzle. The immersion nozzle is first baked by rotation, and then by rotation accompanied by reciprocating motion. This ensures that the immersion nozzle is heated evenly and the baking effect is good, avoiding the impact of over-baking or under-baking on the casting quality. At the same time, the noise on site is greatly reduced during the baking process. Attached Figure Description

[0016] Figure 1 This is a front view of the baking apparatus for the embedded continuous casting tundish immersion nozzle according to an embodiment of this application. Figure 2 This is a top view of the baking apparatus for the embedded continuous casting tundish immersion nozzle according to an embodiment of this application.

[0017] The reference numerals in the attached figures are as follows: 101. First plate; 102. Tripod; 201. First drive unit; 202. Gear; 203. Rack; 301. First air supply pipe; 302. Nozzle; 303. Second air supply pipe; 304. Second plate; 4. Limit module; 5. Temperature measurement module; 6. Solenoid valve. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] See also Figures 1 to 2 As shown, according to a first aspect of the embodiments of this application, a baking device for an embedded continuous casting tundish immersion nozzle is provided, including a support frame, a drive transmission mechanism, and a baking mechanism; the drive transmission mechanism includes a transmission sub-mechanism, the transmission sub-mechanism includes a transmission end, the transmission sub-mechanism is disposed on the support frame, and the transmission end of the transmission sub-mechanism can move relative to the support frame along a first direction; the baking mechanism includes a rotating sub-mechanism and a baking sub-mechanism, the rotating sub-mechanism is connected to the transmission end of the drive mechanism so that the baking mechanism moves along the first direction with the transmission sub-mechanism; the baking sub-mechanism is disposed on the rotating sub-mechanism, and the rotating sub-mechanism is used to drive the baking sub-mechanism to rotate along its own axis.

[0023] The heating mechanism is driven by a transmission mechanism to move into the immersion gate. The immersion gate is first heated by rotation, and then heated by rotation accompanied by reciprocating motion. This ensures that the immersion gate is heated evenly and the heating effect is good. It avoids the immersion gate from being overheated or underheated, which would affect the casting quality. At the same time, the noise on site is greatly reduced during the heating process.

[0024] The transmission submechanism includes a transmission end, which is mounted on the support frame. The transmission end of the transmission submechanism can move relative to the support frame in a first direction. The first direction refers to the vertical direction. The transmission submechanism is mounted on the support frame, and the transmission end of the transmission submechanism has a degree of freedom of movement in the vertical direction relative to the support frame.

[0025] The rotating submechanism is connected to the transmission end of the transmission mechanism, so that the baking mechanism moves along the first direction with the transmission submechanism. The baking submechanism is mounted on the rotating submechanism, which drives the baking submechanism to rotate along its own axis. The rotating submechanism provides rotational driving force to the baking submechanism, enabling it to rotate around its own axis as the center of rotation.

[0026] When baking the submersible nozzle, the drive transmission mechanism is used to drive the baking mechanism to move along the first direction, so that the baking sub-mechanism moves into the interior of the submersible nozzle, and the submersible nozzle is first baked by rotation, and then baked by rotation accompanied by reciprocating motion.

[0027] In another embodiment, the support frame includes a support tripod 102 and a first plate 101, the first plate 101 being arranged along a first direction and disposed on the top of the support tripod 102.

[0028] The tripod support 102 is formed into an integral structure by welding a base plate; the first plate 101 is arranged along the first direction and welded to the top of the tripod support 102, with three welding points to improve the welding stability between the first plate 101 and the tripod support 102.

[0029] Specifically, the basic dimensions of the tripod 102 at the bottom are 25cm × 25cm × 2cm (length × width × thickness); the dimensions of the first plate 101 are 60cm × 15cm × 1cm.

[0030] In another embodiment, the drive transmission mechanism further includes a first drive unit 201, which is disposed on the first plate 101; the transmission mechanism also includes a connecting end, which is connected to the output end of the first drive unit 201.

[0031] The first driving unit 201 is used to provide driving force for the movement of the transmission mechanism so that the transmission end of the transmission mechanism can move in the first direction; the transmission mechanism also includes a connecting end, which is connected to the output end of the first driving unit 201, that is, the first driving unit 201 transmits the driving force to the transmission end through the connecting end.

[0032] Specifically, in this embodiment, the first drive unit 201 is a speed-regulating motor.

[0033] In another embodiment, the transmission submechanism includes a gear 202, a rack 203, and a guide assembly. The gear 202 is disposed at the output end of the first drive unit 201. The guide assembly is disposed on the support frame along a first direction, and the rack 203 is disposed on the guide assembly and meshes with the gear 202.

[0034] The gear 202 is located at the output end of the first drive unit 201. When the first drive unit 201 operates, its output shaft rotates, thereby driving the gear 202 mounted on the output shaft to rotate.

[0035] The guide component is disposed on the support frame along the first direction, and the guide component is disposed on the first plate 101 of the support frame along the first direction, and the guide component is fixed relative to the first plate 101.

[0036] Specifically, there is one guide component, which is connected to one side wall of the rack 203, and the rack 203 can move along the guide component in the first direction; in order to improve the stability of the movement of the rack 203, there are two guide components, which are respectively set on the two side walls of the rack 203.

[0037] More specifically, the guide assembly includes connecting arms and a guide rod. Two connecting arms are fixed to the first plate 101, one above the other. The guide rod is installed between the two connecting arms, at one end away from the first plate 101. The connecting arms are used to fix the guide rod along the first direction. A guide ring is provided on the side wall of the rack 203 near the end of the supporting tripod 102. The guide ring is sleeved on the guide rod so that the rack 203 is installed on the guide rod. This serves to support the rack 203 and limit its movement, ensuring that the rack 203 can move stably along the first direction under the drive of the gear 202.

[0038] In other embodiments, the transmission sub-mechanism may also be a ball screw transmission mechanism, which is mounted on the first plate 101. The first drive unit 201 is connected to the lead screw in the ball screw transmission mechanism, and the baking mechanism is connected to the nut in the ball screw transmission mechanism. The first drive unit 201 provides driving force to drive the lead screw to rotate, so that the nut carries the baking assembly to move along the first direction.

[0039] Compared to the rotating submechanism composed of rack 203 and gear 202, the structure is simpler and the cost is lower.

[0040] In another embodiment, the rotating submechanism includes a rotating cylinder, a rotating body, and a fixed cylinder. The fixed cylinder is connected to the transmission end of the transmission mechanism via a second plate 304. The rotating cylinder and the fixed cylinder are connected via the rotating body so that the rotating cylinder rotates relative to the fixed cylinder.

[0041] The fixed cylinder is connected to the transmission end of the transmission mechanism via the second plate 304. That is, the fixed cylinder is connected to the side wall of the rack 203 away from the gear teeth via the second plate 304. The second plate 304 is set so that there is a gap between the baking sub-mechanism and the rack 203, so that when the baking sub-mechanism moves into the immersion nozzle, it will not interfere with the rack 203. At the same time, the second plate 304 serves to support the baking mechanism.

[0042] The rotating cylinder and the fixed cylinder are connected by a rotating body, meaning that the rotating cylinder can rotate relative to the fixed cylinder so that the baking sub-mechanism can rotate around its own axis.

[0043] Specifically, the rotating element is a bearing.

[0044] In another embodiment, the rotary submechanism further includes a second drive unit and a transmission assembly. The transmission assembly includes a main gear and a driven gear. The driven gear is sleeved on the rotating cylinder. The main gear is located at the output end of the second drive unit and meshes with the driven gear. The second drive unit is located on the second plate 304.

[0045] The second drive unit is mounted on the second plate 304. The output shaft of the second drive unit can be arranged in the horizontal direction. At this time, the driving gear mounted on the output shaft of the second drive unit is a bevel gear, and the driven gear meshing with the driving gear and mounted on the rotating cylinder is also a bevel gear, so that the second drive unit can drive the baking sub-mechanism to rotate around its own axis.

[0046] The output shaft of the second drive unit can also be arranged in the vertical direction, in which case both the driving gear and the driven gear are cylindrical gears.

[0047] Specifically, the second drive unit is a motor.

[0048] In another embodiment, the baking sub-mechanism includes a first air supply pipe 301, a second air supply pipe 303, and nozzles 302. The first air supply pipe 301 is arranged along a first direction and is connected to the end of the rotating cylinder opposite to the rotating body, so that the first air supply pipe 301 rotates together with the rotating cylinder. A plurality of nozzles 302 are provided on the first air supply pipe 301 along the first direction. The second air supply pipe 303 is connected to the end of the fixed cylinder away from the rotating body, and the end of the second air supply pipe 303 away from the fixed cylinder is connected to the air source.

[0049] The first air supply pipe 301 is arranged along the first direction and connected to the end of the rotating cylinder opposite to the rotating body. In order to ensure the airtightness between the first air supply pipe 301 and the rotating cylinder, the first air supply pipe 301 and the rotating cylinder are welded together so that the two are integrally formed and the airtightness at the connection node is improved.

[0050] The first gas supply pipe 301 is provided with a plurality of nozzles 302 along the first direction. The nozzles 302 are used to spray out the gas in the first gas supply pipe 301 and burn near the nozzles 302 to heat the immersion water inlet.

[0051] Specifically, the nozzles 302 are arranged at equal intervals along the first direction on the first air supply pipe 301, and the spray ranges of adjacent nozzles 302 partially overlap to ensure the uniformity and stability of gas spray. A nozzle 302 is also provided at the end of the first air supply pipe 301 away from the rotating cylinder.

[0052] The distance between adjacent nozzles 302 is 10cm.

[0053] The second gas supply pipe 303 is connected to the end of the fixed cylinder away from the rotating body. The end of the second gas supply pipe 303 away from the fixed cylinder is connected to the gas source. The second gas supply pipe 303 is only used to supply gas and does not participate in the rotation, so as to avoid pipeline entanglement at the gas supply end.

[0054] Specifically, to ensure the airtightness of the air inlet, the second air supply pipe 303 is connected to the fixed cylinder in a sealed manner.

[0055] Among them, a solenoid valve 6 is installed on the second air supply pipe 303, which is used to automatically adjust the opening degree.

[0056] Specifically, the first air supply pipe 301 is a high alloy steel pipe with an outer diameter of Φ20cm; the second air supply pipe 303 is a metal flexible pipe, which in this embodiment can be a corrugated pipe.

[0057] In another embodiment, the baking apparatus further includes a temperature measuring module 5, which is disposed on top of the drive transmission mechanism.

[0058] The temperature measuring module 5 is located on the top of the drive transmission mechanism. The temperature measuring module 5 is fixedly installed on the top of the rack 203 of the drive transmission mechanism and is used to monitor the temperature data of the immersion inlet.

[0059] Specifically, temperature measurement module 5 is a temperature sensor.

[0060] In another embodiment, the baking apparatus further includes at least three limiting modules 4, which are arranged on the support frame along a first direction.

[0061] Three limiting modules 4 are arranged along the first direction on the support frame. These three limiting modules 4 are a first limiting module, a second limiting module, and a third limiting module. The first and third limiting modules are installed at both ends of the first plate 101, and the second limiting module is installed on the first plate 101 near the end of the first limiting module. The first limiting module is used to detect whether the rack 203 is in its initial position, that is, whether the first air supply pipe 301 is in its initial position; the second limiting module is used to detect whether the rack 203 is in its lower limit working position; and the third limiting module is used to detect whether the rack 203 is in its upper limit working position.

[0062] All three limit modules 4 are connected to the controller and are used to feed back the position information of the rack 203 to the controller so that the controller can control the first drive unit 201 to stop working or control the first drive unit 201 to switch between forward and reverse rotation.

[0063] Specifically, the second limiting module is installed 10cm from the lower end of the first plate 101.

[0064] Specifically, limit module 4 is a limit switch.

[0065] In another embodiment, the baking apparatus also includes a controller.

[0066] The first limit module, the second limit module, and the third limit module are used to detect the position information of the rack 203 and feed it back to the controller.

[0067] Temperature measurement module 5 is used to detect the temperature data of the immersion inlet and feed it back to the controller. The controller compares the real-time temperature data with the preset temperature target value corresponding to each fire quantity. If the real-time temperature does not meet the target, the controller sends an opening adjustment signal to the solenoid valve 6 (specifically, the controller sends an incremental adjustment signal to the solenoid valve 6 to control its opening to increase by 5% every 5 minutes). If the temperature meets the target, the current opening of the solenoid valve 6 is maintained. During the timing control phase, the controller sends flow regulation signals to the solenoid valve 6 at intervals according to the preset small fire, medium fire and large fire curve process, and controls it to adjust the gas opening.

[0068] When baking is finished, the controller sends a shut-off signal to solenoid valve 6 to cut off the gas supply.

[0069] The first drive unit 201 is connected to the controller, and sends start / stop, steering and speed adjustment signals to the first drive unit 201 according to the preset program and the feedback signal from the limit module 4. When the automatic baking mode is started, the controller sends a start signal to drive the first drive unit 201 to rotate, which in turn drives the first air supply pipe 301 to rise. When the third limit module is triggered, the first drive unit 201 stops working.

[0070] When the preset program reaches the high-heat baking mode, the controller controls the first drive unit 201 to start again. After the second limit module and the third limit module are triggered by the rack 203, the controller sends a steering signal to control the first drive unit 201 to rotate in the opposite direction, so as to realize the reciprocating motion of the first air supply pipe 301. When baking is finished, the controller sends a stop signal to control the first drive unit 201 to drive the baking device to reset to the initial position.

[0071] The second drive unit is connected to the controller.

[0072] When the automatic baking mode is started, the controller sends a start signal to the second drive unit and sends a speed adjustment signal according to the current heat level (low, medium and high) to achieve matching between the rotation speed and the heat level; When baking is complete, the controller sends a stop signal to stop the second drive unit from operating.

[0073] The second aspect of this application provides a baking method for an embedded continuous casting tundish immersion nozzle baking apparatus, employing any one of the above-mentioned embedded continuous casting tundish immersion nozzle baking apparatuses. The baking method includes: After the intermediate ladle is baked to the target pouring temperature, the baking mechanism and drive transmission mechanism are activated based on a preset time node. The drive transmission mechanism drives the baking mechanism to rise from the initial position to the working position, so that the baking sub-mechanism moves into the immersion gate. The gas flow rate is adjusted based on the stepped heating and baking curve process to perform rotary baking on the immersion nozzle; if the temperature of the immersion nozzle is not detected to reach the preset temperature target value corresponding to the current fire, the gas flow rate is dynamically adjusted based on the baking mechanism to ensure that the preset temperature target value corresponding to the current fire is reached. When the preset time node for reciprocating baking is reached, the drive transmission mechanism drives the baking sub-mechanism to reciprocate along the first direction, and continues to bake the immersion gate in a rotational and reciprocating manner until the preset target temperature of the immersion gate is reached. After baking is complete, the gas is turned off; the baking mechanism is moved to its initial position by the drive transmission mechanism, and then the drive transmission mechanism and the baking mechanism are turned off.

[0074] The baking method provided in this embodiment drives the baking mechanism to move into the immersion gate through a drive transmission mechanism. The immersion gate is first baked by rotation, and then baked by rotation accompanied by reciprocating motion. This makes the immersion gate evenly heated, resulting in a good baking effect and avoiding the impact of over-baking or under-baking on the casting quality. At the same time, the noise on site is greatly reduced during the baking process.

[0075] Among them, the target temperature for pouring, the preset time node, the preset temperature target value corresponding to the current fire level, the preset time node for reciprocating baking, and the preset target temperature for immersion nozzle are all set based on experience.

[0076] More specific baking method: Before baking, the intermediate ladle cart carries the intermediate ladle to the baking position for baking. Check whether the rotating submechanism is in the initial position. Adjust the baking device so that the first air supply pipe 301 is parallel to the immersion nozzle and perpendicular to the horizontal plane. At the same time, ensure that the temperature measuring angle of the temperature measuring module 5 is perpendicular to the immersion nozzle.

[0077] After the intermediate ladle is baked to the target temperature for pouring, the second drive unit of the baking mechanism, the solenoid valve 6, and the first drive unit 201 of the drive transmission mechanism are activated based on a preset time node (30 minutes before pouring in this embodiment). The first drive unit 201 drives the gear 202 to rotate, thereby driving the baking mechanism mounted on the rack 203 to move along the first direction with the rack 203, rising from the initial position to the working position, triggering the second limit module, and the first drive unit 201 stops, so that the baking sub-mechanism moves into the immersion nozzle; the second drive unit is used to drive the first air supply pipe 301 to rotate around its own axis, and activate the automatic baking mode of the immersion nozzle. The gas flow rate is adjusted based on the stepped heating and baking curve process to perform rotary baking on the immersion nozzle; if the temperature of the immersion nozzle is not detected to reach the preset temperature target value corresponding to the current fire, the gas flow rate is dynamically adjusted based on the baking mechanism to ensure that the preset temperature target value corresponding to the current fire is reached. Specifically, the gas flow rate is adjusted based on the stepped heating and baking curve process, that is, the gas flow rate is set according to the small fire, medium fire and large fire curve process, and automatically adjusted every 10 minutes. The rotation speed of the first gas supply pipe 301 is automatically adjusted to slow, medium and fast speed according to the fire amount. When the fire is small and medium, the first gas supply pipe 301 rotates in the working position to bake the immersion water inlet.

[0078] Temperature module 5 monitors the baking temperature of the immersion nozzle in real time. When the baking temperature of the immersion nozzle does not reach the preset temperature target value corresponding to the current fire volume, solenoid valve 6 automatically adjusts the gas flow rate to bake the immersion nozzle at a rate of 5% every 5 minutes.

[0079] When the preset time node for reciprocating baking is reached, the drive transmission mechanism drives the baking sub-mechanism to reciprocate along the first direction, and continues to bake the immersion gate in a rotational and reciprocating manner until the preset target temperature of the immersion gate is reached. Specifically, when the preset time node for reciprocating baking is reached, that is, during the high-heat baking stage, the first drive unit 201 is started, driving the transmission sub-assembly to move repeatedly along the first direction. When the rack 203 touches the second limit module and the third limit module, the first drive unit 201 changes the direction of rotation, so that the first air supply pipe 301 rotates along the first direction and moves in a reciprocating manner to bake the immersion nozzle until the preset target temperature of the immersion nozzle is reached, and the baking ends. After baking is complete, the gas is turned off; the baking mechanism is moved to its initial position by the drive transmission mechanism, and then the drive transmission mechanism and the baking mechanism are turned off.

[0080] Specifically, when baking is finished, the first drive unit 201 drives the first air supply pipe 301 to move to the initial position, triggering the first limit module and then stopping. At the same time, the solenoid valve 6 closes and the second drive unit stops working.

[0081] If the start of the pouring plan is brought forward or postponed, the gas flow can be adjusted by controlling the opening degree of solenoid valve 6 to achieve the desired baking effect.

[0082] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0083] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A baking device for an embedded continuous casting tundish immersion nozzle, characterized in that, include Support frame; A drive transmission mechanism; the drive transmission mechanism includes a transmission sub-mechanism, the transmission sub-mechanism includes a transmission end, the transmission sub-mechanism is disposed on the support frame, and the transmission end of the transmission sub-mechanism is movable relative to the support frame along a first direction; A baking mechanism; the baking mechanism includes a rotating sub-mechanism and a baking sub-mechanism, the rotating sub-mechanism being connected to the transmission end of the transmission mechanism so that the baking mechanism moves along a first direction with the transmission sub-mechanism; the baking sub-mechanism is disposed on the rotating sub-mechanism, and the rotating sub-mechanism is used to drive the baking sub-mechanism to rotate along its own axis.

2. The baking device for an embedded continuous casting tundish immersion nozzle according to claim 1, characterized in that, The support frame includes a support tripod (102) and a first plate (101), the first plate (101) being arranged along a first direction and disposed on the top of the support tripod (102).

3. The baking device for an embedded continuous casting tundish immersion nozzle according to claim 1, characterized in that, The drive transmission mechanism further includes a first drive unit (201), which is disposed on the first plate (101); the transmission mechanism further includes a connecting end, which is connected to the output end of the first drive unit (201).

4. The baking device for an embedded continuous casting tundish immersion nozzle according to claim 1, characterized in that, The transmission submechanism includes a gear (202), a rack (203) and a guide assembly. The gear (202) is located at the output end of the first drive unit (201). The guide assembly is located on the support frame along a first direction. The rack (203) is located on the guide assembly and meshes with the gear (202).

5. The baking device for an embedded continuous casting tundish immersion nozzle according to claim 1, characterized in that, The rotating submechanism includes a rotating cylinder, a rotating body, and a fixed cylinder. The fixed cylinder is connected to the transmission end of the transmission mechanism via a second plate (304). The rotating cylinder and the fixed cylinder are connected via the rotating body so that the rotating cylinder rotates relative to the fixed cylinder.

6. The baking device for an embedded continuous casting tundish immersion nozzle according to claim 5, characterized in that, The rotating submechanism also includes a second driving unit and a transmission assembly. The transmission assembly includes a main gear and a driven gear. The driven gear is sleeved on the rotating cylinder. The main gear is located at the output end of the second driving unit and meshes with the driven gear. The second driving unit is located on the second plate (304).

7. The baking device for an embedded continuous casting tundish immersion nozzle according to claim 5, characterized in that, The baking sub-mechanism includes a first air supply pipe (301), a second air supply pipe (303), and nozzles (302). The first air supply pipe (301) is arranged along a first direction and is connected to the end of the rotating cylinder opposite to the rotating body, so that the first air supply pipe (301) rotates together with the rotating cylinder. A plurality of nozzles (302) are provided on the first air supply pipe (301) along the first direction. The second air supply pipe (303) is connected to the end of the fixed cylinder away from the rotating body, and the end of the second air supply pipe (303) away from the fixed cylinder is connected to the air source.

8. A baking apparatus for an embedded continuous casting tundish immersion nozzle according to any one of claims 1 to 7, characterized in that, The baking device also includes a temperature measuring module (5), which is located on the top of the drive transmission mechanism.

9. The baking device for an embedded continuous casting tundish immersion nozzle according to claim 8, characterized in that, The baking device also includes at least three limiting modules (4), which are arranged on the support frame along a first direction.

10. A baking method for a baking device for an embedded continuous casting tundish immersion nozzle, characterized in that, The baking apparatus for the embedded continuous casting tundish immersion nozzle as described in any one of claims 1 to 9, wherein the baking method comprises: After the intermediate ladle is baked to the target pouring temperature, the baking mechanism and drive transmission mechanism are activated based on a preset time node. The drive transmission mechanism drives the baking mechanism to rise from the initial position to the working position, so that the baking sub-mechanism moves into the immersion gate. The gas flow rate is adjusted based on the stepped heating and baking curve process to perform rotary baking on the immersion nozzle; if the temperature of the immersion nozzle is not detected to reach the preset temperature target value corresponding to the current fire, the gas flow rate is dynamically adjusted based on the baking mechanism to ensure that the preset temperature target value corresponding to the current fire is reached. When the preset time node for reciprocating baking is reached, the drive transmission mechanism drives the baking sub-mechanism to reciprocate along the first direction, and continues to bake the immersion gate in a rotational and reciprocating manner until the preset target temperature of the immersion gate is reached. After baking is complete, the gas is turned off; the baking mechanism is moved to its initial position by the drive transmission mechanism, and then the drive transmission mechanism and the baking mechanism are turned off.

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