Molten steel liquid level detection device

Abstract

The invention relates to the technical field of liquid level detection, in particular to a molten steel liquid level detection device which comprises a bottom plate, four supporting columns are fixedly connected to the top of the bottom plate, a steel ladle body is fixedly connected to the tops of the four supporting columns, and a cover body is installed on the steel ladle body; a steel tapping hole is formed in the side wall of the steel ladle body, and a first detection mechanism is arranged on one side of the steel tapping hole; the distance from an electrode to electrode arcing is measured through a displacement sensor, the molten steel liquid level of the electric arc furnace is measured through an arc length empirical formula, a calibration line is set through a visual camera, a sliding rail is powered on, a sliding rod is driven to move through the sliding rail, the visual camera is driven to move through the sliding rod, and the visual camera extrudes a baffle in the moving process. The baffle is moved away from the cleaning brush, the vision camera can rub on the cleaning brush to remove dust, the spring is compressed, and therefore when the vision camera moves reversely, under the action of the spring, the baffle and the push plate are rapidly reset, and dust prevention of the cleaning brush is facilitated.

Description

Technical Field

[0001] This invention relates to the field of liquid level detection technology, and in particular to a steel liquid level detection device. Background Technology

[0002] During the smelting process, solid scrap steel is transformed into molten steel at high temperatures, forming a high-temperature molten pool. The height of the molten pool increases with the amount of scrap steel melted. Oxygen blowing accompanies the smelting process, where oxygen reacts with elements such as C, Si, Mn, and P in the molten steel to form oxides that accumulate in the slag, purifying the steel. Therefore, controlling and measuring the height of the molten pool is extremely important for the smelting process. Because the molten pool itself is a high-temperature liquid environment, conventional methods are insufficient for detecting its level.

[0003] A Chinese patent with publication number CN117824778A discloses a method for detecting the molten steel level in an electric arc furnace using electrodes. This method, belonging to the field of metallurgical equipment technology, addresses the problems of existing detection methods being complex, costly, and unable to achieve continuous level monitoring. It utilizes image (camera) recognition technology, combined with a displacement sensor, to measure the distance from electrode descent to the arc initiation point. The molten steel level in the electric arc furnace is then measured using an empirical formula for arc length. This method allows for real-time and continuous detection of the molten steel level. Each detection calibrates the electrode tip position, reducing detection errors. Furthermore, electrode damage during a single use can be corrected by considering the relationship between electrode consumption and usage time, further reducing errors and enabling continuous level monitoring.

[0004] In current technologies, camera recognition technology, combined with displacement sensors, measures the distance from when the electrode descends to when the electrode ignites the arc. The level of molten steel in an electric arc furnace is then measured using an empirical formula for arc length. However, due to the high temperature and dust in the molten steel smelting environment, the camera may become covered in dust or burned by high temperatures, rendering it ineffective for monitoring.

[0005] Therefore, the present invention provides a steel liquid level detection device. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the camera may be covered with dust or burned by high temperature due to the high temperature and dust in the steel smelting environment.

[0007] To solve the above-mentioned technical problems, the present invention provides a molten steel level detection device, including a base plate, four pillars fixedly connected to the top of the base plate, a ladle body fixedly connected to the top of the four pillars, and a cover installed on the ladle body; a steel outlet is provided on the side wall of the ladle body, and a first detection mechanism is provided on one side of the steel outlet; the first detection mechanism includes a slide rail fixedly connected to one end of the top of the base plate, a sliding rod slidably connected to the slide rail, a vision camera fixedly connected to the sliding rod, and a fixing rod provided on one side of the slide rail. A cleaning brush is attached to the top of the fixed rod near the side wall of the vision camera, and a baffle is provided on the outer wall of the cleaning brush. A push plate is fixed to the side wall of the baffle away from the vision camera. One end of the push plate is slidably connected to the fixed rod through two sliding rods. Springs are sleeved on the outer walls of the sliding rods, and the two ends of the springs are fixed to the push plate and the sliding rods, respectively. Three horizontal arms are provided above the cover. Displacement sensors are fixed to the bottom of each horizontal arm. A lifting mechanism is provided at one end of each horizontal arm. A second detection mechanism is also provided on the cover.

[0008] In one embodiment of the present invention, a mounting platform is fixedly connected to the top of the end of the base plate away from the slide rail, and a rotating platform is fixedly connected to the top of the mounting platform via a second motor. The bottom of the rotating platform is mounted on the top of the mounting platform via four rollers. A horizontal plate is fixedly connected to the top of the rotating platform.

[0009] In one embodiment of the present invention, two first fixed seats are fixedly connected to the top of the horizontal plate, and each of the first fixed seats is rotatably connected to a fixed pulley; two card seats are symmetrically fixed to both ends of the top of the cover, and steel wire ropes are fixedly connected to each card seat; a second fixed seat is fixedly connected to the top of the horizontal plate away from the ladle body, and a mechanical arm is installed on the second fixed seat; the other end of each steel wire rope is sleeved on the outside of the fixed pulley and fixed to the mechanical arm; the mechanical arm is provided with a drive mechanism.

[0010] In one embodiment of the present invention, the lifting mechanism includes a support platform fixed to the top of the horizontal plate, three hydraulic cylinders fixed to the top of the support platform, and the output ends of the hydraulic cylinders fixed to the bottom of the horizontal arm respectively; three vertical rods are fixed to the top of the horizontal plate, and the horizontal arm is slidably connected to the vertical rods.

[0011] In one embodiment of the present invention, the second detection mechanism includes three gratings fixed to the top of the cover, the width of each grating covering the electrode, and a protective cover provided on the outside of the gratings, the protective cover being fixed to the top of the cover.

[0012] In one embodiment of the present invention, the protective cover is provided with a cooling shroud, and a cooling fan and a temperature sensor are installed inside the cooling shroud.

[0013] In one embodiment of the present invention, two connecting plates are fixedly connected to the top of the cover, and a reciprocating screw is rotatably connected between the two connecting plates via a bearing. A moving block is threaded onto the reciprocating screw, and an air gun is sleeved on the bottom of the moving block. An air storage tank is fixedly connected to the bottom of the horizontal plate, and the air gun is connected to and fixedly connected to the air storage tank via a hose. A first motor is provided at one end of the reciprocating screw.

[0014] In one embodiment of the present invention, two limiting rods are fixedly connected between the two connecting plates, and the moving block is slidably connected to the two limiting rods.

[0015] In one embodiment of the present invention, the electrodes all penetrate the horizontal arm, the horizontal plate, and the cover; a clamping mechanism is provided on the outer side of each electrode; the clamping mechanism includes two arc-shaped clamping plates; multiple fixing plates are fixedly connected to the top of the horizontal arm, respectively located at both ends of the arc-shaped clamping plates; a bidirectional ball screw is rotatably connected between the two fixing plates at one end of the arc-shaped clamping plates via a bearing, and two arc-shaped clamping plates are threaded onto the bidirectional ball screw; a rotating block is fixedly connected to one end of the bidirectional ball screw.

[0016] In one embodiment of the present invention, a guide rod is fixedly connected between two fixing plates at the other end of the arc-shaped clamp, and the arc-shaped clamp is slidably connected to the guide rod.

[0017] The technical solution of the present invention has the following advantages compared with the prior art:

[0018] The molten steel level detection device of this invention utilizes the cooperation of a cleaning brush, a push plate, a baffle, and a spring. A displacement sensor measures the distance from the electrode's descent to the electrode's arc initiation point. An empirical formula for arc length is used to measure the molten steel level in the electric arc furnace. A calibration line is set via a vision camera. Energizing a slide rail drives a sliding rod, which in turn moves the vision camera. During this movement, the vision camera presses against the baffle, moving it away from the cleaning brush. This facilitates friction cleaning of the brush by the vision camera. During this pressing process, the baffle causes the push plate to slide on the slide rod, compressing the spring. Therefore, when the vision camera moves in the opposite direction, the baffle and push plate quickly reset under the action of the spring, facilitating dust prevention of the cleaning brush.

[0019] This invention discloses a molten steel level detection device. By using a grating, when the electrode is inside the furnace cover, it blocks the light from the grating, and the sensor outputs a signal. When the electrode is removed from the furnace cover, it leaves the detection range of the grating, the light is restored, and the sensor output signal changes. When the grating detects that the electrode has been removed from the furnace cover, the system immediately captures and records the current position of the crossarm via a conductive crossarm position sensor. The grating signal serves as a trigger condition, ensuring that the recorded crossarm position data corresponds to the instant the electrode is removed from the furnace cover, thus avoiding misjudgment. The grating signal and a vision camera together detect whether the electrode has completely left the furnace cover. If the grating signal and the vision camera result are inconsistent, the system can use a logical algorithm to eliminate errors, improving detection reliability.

[0020] The steel liquid level detection device of the present invention uses an air gun. By turning on the first motor, the output shaft of the first motor drives the reciprocating screw to rotate, the reciprocating screw drives the moving block to reciprocate, the moving block drives the air gun to reciprocate, and the air gun sprays air onto the grating to blow dust off the grating, thereby improving the accuracy of the grating. Attached Figure Description

[0021] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a perspective view of the ladle body in this invention;

[0024] Figure 3 This is a perspective view of the cross arm in this invention;

[0025] Figure 4 This is a three-dimensional view of the electrodes in this invention;

[0026] Figure 5 This is a perspective view of the movable block in this invention;

[0027] Figure 6 This is a perspective view of the protective cover in this invention;

[0028] Figure 7 This is a perspective view of the rotary table in this invention;

[0029] Figure 8 This is a stereoscopic view of the visual camera in this invention;

[0030] Explanation of reference numerals in the accompanying drawings: 1. Base plate; 2. Support column; 21. Ladle body; 22. Cover; 23. Steel outlet; 24. Card holder; 25. Steel wire rope; 26. First fixed seat; 27. Fixed pulley; 28. Robotic arm; 29. ​​Second fixed seat; 3. Mounting platform; 31. Rotary table; 32. Horizontal plate; 33. Support platform; 331. Hydraulic cylinder; 332. Horizontal arm; 333. Vertical rod; 334. Electrode; 335. Displacement sensor; 34. Arc-shaped clamp; 341. Fixing plate; 342. 343. Guide rod; 344. Bidirectional ball screw; 345. Rotary block; 35. Connecting plate; 356. First motor; 357. Reciprocating screw; 358. Limiting rod; 359. Moving block; 300. Air gun; 350. Air tank; 36. Protective cover; 37. Cooling cover; 38. Grating; 39. Roller; 300. Second motor; 41. Slide rail; 42. Sliding rod; 43. Vision camera; 44. Fixing rod; 45. Cleaning brush; 46. Baffle; 47. Push plate; 48. Sliding rod; 49. Spring. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0032] Please see Figure 1 - Figure 8 This invention provides a molten steel level detection device, comprising a base plate 1, four support columns 2 fixedly connected to the top of the base plate 1, a ladle body 21 fixedly connected to the top of the four support columns 2, and a cover 22 installed on the ladle body 21; a steel outlet 23 is provided on the side wall of the ladle body 21, and a first detection mechanism is provided on one side of the steel outlet 23; the first detection mechanism includes a slide rail 4 fixedly connected to one end of the top of the base plate 1, a sliding rod 41 slidably connected to the slide rail 4, a vision camera 42 fixedly connected to the sliding rod 41, and a fixing rod 43 provided on one side of the slide rail 4, with the top of the fixing rod 43 close to the vision camera 4. A cleaning brush 44 is attached to the side wall of the cover 2, and a baffle 45 is provided on the outer wall of the cleaning brush 44. A push plate 46 is fixedly connected to the side wall of the baffle 45 away from the vision camera 42. One end of the push plate 46 is slidably connected to the fixed rod 43 through two sliding rods 47. A spring 48 is sleeved on the outer wall of each sliding rod 47. The two ends of the spring 48 are respectively fixed to the push plate 46 and the sliding rod 47. Three horizontal arms 332 are provided above the cover 22. A displacement sensor 335 is fixedly connected to the bottom of each horizontal arm 332. A lifting mechanism is provided at one end of each horizontal arm 332. A second detection mechanism is also provided on the cover 22.

[0033] During the smelting process, solid scrap steel is transformed into molten steel at high temperatures, forming a high-temperature molten pool. The height of the molten pool increases with the amount of scrap steel melted. Oxygen blowing accompanies the smelting process, where oxygen reacts with elements such as C, Si, Mn, and P in the molten steel to form oxides that accumulate in the slag, purifying the steel. Therefore, controlling and measuring the height of the molten pool is extremely important for the smelting process. Because the molten pool itself is a high-temperature liquid environment, conventional methods are insufficient for detecting its level.

[0034] When the first detection mechanism provided by the present invention is used, a displacement sensor 335 is set to measure the lifting height of the electrode 334; a vision camera 42 is set on the outside of the furnace door, the horizontal line where the center of the vision camera 42 is located is recorded as the calibration line, and the horizontal line where the lower edge of the furnace door is located is set as the liquid level reference zero point.

[0035] The distance between the calibration line and the zero point of the reference is denoted as L1;

[0036] The visual camera 42 records the moment when the end of the electrode 334 is located on the horizontal line where the center of the visual camera 42 is located. At the moment when the electrode 334 starts to descend, the displacement sensor 335 records the value when the electrode 334 starts to arc, which is the distance L2 that the electrode 334 descends from the calibration line.

[0037] The arc length of an electric arc furnace is denoted as H;

[0038] The distance between the current molten steel level and the lower edge of the furnace door is denoted as D, where D = L2 + H - L1.

[0039] The distance from when electrode 334 descends to when it begins to arc is measured by displacement sensor 335. The level of molten steel in the electric arc furnace is measured by an empirical formula for arc length. Each time the end of electrode 334 descends past position L1, vision camera 42 recalibrates the displacement sensor 335 to zero. This method calibrates the end of electrode 334 during its descent, reducing detection errors. Furthermore, damage to electrode 334 during a single use can be corrected by the relationship between electrode 334 consumption and usage time, further reducing errors.

[0040] Electrode 334 immersion depth: When electrode 334 descends to contact the molten steel, the liquid level directly affects the arc length. The liquid level position can be calculated by the positional difference of multiple electrodes 334 and their electrical parameters.

[0041] Dynamic interference compensation:

[0042] Scrap steel melting stage: The scrap steel melting rate is calculated by measuring the descent speed of electrode 334 and voltage / current fluctuations, and the liquid level error is corrected.

[0043] Melting point determination: Combine liquid level, slag flow, audio signals, etc. to determine whether the molten steel has completely melted.

[0044] Foaming slag stage: Use liquid level data to identify the thickness of foaming slag and avoid misjudging the actual amount of molten steel.

[0045] After a period of operation, the vision camera 42 will accumulate dust. By energizing the slide rail 4, the slide rail 4 drives the sliding rod 41 to move, which in turn drives the vision camera 42 to move. During the movement, the vision camera 42 presses against the baffle 45, which moves away from the cleaning brush 44, allowing the vision camera 42 to rub against the cleaning brush 44 to remove dust. During the pressing process, the baffle 45 drives the push plate 46 to slide on the slide rod 47, and the spring 48 is compressed. Therefore, when the vision camera 42 moves in the opposite direction, the baffle 45 and the push plate 46 quickly return to their original positions under the action of the spring 48, which facilitates dust prevention for the cleaning brush 44.

[0046] Simultaneously activating the second testing facility not only improves testing accuracy but also facilitates continuous testing work while the first testing facility is being cleaned and maintained.

[0047] Furthermore, such as Figure 1 and Figure 7 As shown, a mounting platform 3 is fixedly connected to the top of the end of the base plate 1 away from the slide rail 4. A rotating platform 31 is fixedly connected to the top of the mounting platform 3 via a second motor 38. The bottom of the rotating platform 31 is provided on the top of the mounting platform 3 via four rollers 37. A horizontal plate 32 is fixedly connected to the top of the rotating platform 31.

[0048] The rotating platform 31 provided by the present invention is used to rotate the horizontal plate 32. When it is necessary to open and close the cover 22, the second motor 38 is turned on, and the output shaft of the second motor 38 drives the rotating platform 31 to rotate. The rotating platform 31 drives the horizontal plate 32 to rotate, and the horizontal plate 32 drives the cover 22 to rotate, which facilitates the opening and closing of the cover 22.

[0049] Furthermore, such as Figure 2 As shown, two first fixed seats 26 are fixedly connected to the top of the horizontal plate 32, and each of the first fixed seats 26 is rotatably connected to a fixed pulley 27; two card seats 24 are symmetrically fixedly connected to both ends of the top of the cover 22, and each of the card seats 24 is fixedly connected to a steel wire rope 25; a second fixed seat 29 is fixedly connected to the top of the horizontal plate 32 away from the ladle body 21, and a mechanical arm 28 is installed on the second fixed seat 29; the other end of each steel wire rope 25 is sleeved on the outside of the fixed pulley 27 and fixedly connected to the mechanical arm 28; the mechanical arm 28 is provided with a drive mechanism.

[0050] When the steel wire rope 25 and fixed pulley 27 provided by the present invention need to be used to open the cover 22, the drive mechanism is opened, and the extension or rotation of the drive mechanism drives one end of the steel wire rope 25 to rotate. The steel wire rope 25 passes around the fixed pulley 27 and drives the other end of the bracket 24 to move. The bracket 24 drives the cover 22 to move upward. The fixed pulley 27 can change the direction of one side of the robotic arm 28, but does not affect the direction of the bracket 24 and the fixed pulley 27, which facilitates the vertical movement of the cover 22. When closing the cover 22, the drive mechanism rotates in the opposite direction.

[0051] Furthermore, if Figure 3 As shown, the lifting mechanism includes a support platform 33 fixed to the top of the horizontal plate 32, three hydraulic cylinders 331 fixed to the top of the support platform 33, and the output ends of the hydraulic cylinders 331 fixed to the bottom of the horizontal arm 332 respectively; three vertical rods 333 fixed to the top of the horizontal plate 32, and the horizontal arm 332 is slidably connected to the vertical rods 333.

[0052] When the lifting mechanism provided by the present invention needs to drive the electrode 334 to move, the hydraulic cylinder 331 is activated. The output end of the hydraulic cylinder 331 drives the horizontal arm 332 to move. The horizontal arm 332 slides on the vertical rod 333, and the vertical rod 333 limits the horizontal arm 332 to move in the vertical direction.

[0053] Furthermore, if Figure 1 and Figure 6 As shown, the second detection mechanism includes three gratings 362 fixed to the top of the cover 22. The width of each grating 362 covers the electrode 334. A protective cover 36 is provided on the outside of each grating 362. The protective cover 36 is fixed to the top of the cover 22.

[0054] When the second detection mechanism provided by this invention is in use, if electrode 334 is inside the furnace lid, electrode 334 will block the light from grating 362, and the sensor will output a signal. When electrode 334 is removed from the furnace lid, electrode 334 leaves the detection range of grating 362, the light will be restored, and the sensor output signal will change. When grating 362 detects that electrode 334 has been removed from the furnace lid, the system will immediately capture and record the current position of cross arm 332. The position sensor of conductive cross arm 332 and the signal of grating 362 serve as trigger conditions to ensure that the recorded position data of cross arm 332 corresponds to the moment when electrode 334 is removed from the furnace lid, thus avoiding misjudgment. The signal of grating 362 and vision camera 42 together detect whether electrode 334 has completely left the furnace lid. If the signal of grating 362 and the result of vision camera 42 are inconsistent, the system can eliminate errors through logic algorithms to improve detection reliability.

[0055] Furthermore, if Figure 6As shown, the protective cover 36 is equipped with a cooling shroud 361, and a cooling fan and a temperature sensor are installed inside the cooling shroud 361.

[0056] When using the cooling fan and temperature sensor provided by this invention, due to the high ambient temperature of molten steel smelting, a cooling fan needs to be installed on the grating 362 to prevent the sensor from overheating. The temperature sensor facilitates real-time monitoring of the temperature inside the protective cover 36.

[0057] Furthermore, such as Figure 5 As shown, two connecting plates 35 are fixedly connected to the top of the cover 22. A reciprocating screw 352 is rotatably connected between the two connecting plates 35 via a bearing. A moving block 354 is threaded onto the reciprocating screw 352. An air gun 355 is sleeved on the bottom of the moving block 354. An air storage tank 356 is fixedly connected to the bottom of the horizontal plate 32. The air gun 355 is connected to the air storage tank 356 via a hose. A first motor 351 is provided at one end of the reciprocating screw 352.

[0058] The air gun 355 provided by this invention is used to clean the grating 362. When dust on the grating 362 affects detection, the first motor 351 is turned on, and the output shaft of the first motor 351 drives the reciprocating screw 352 to rotate. The reciprocating screw 352 drives the moving block 354 to reciprocate, and the moving block 354 drives the air gun 355 to reciprocate. The air gun 355 sprays air onto the grating 362 to blow the dust off the grating 362, thereby improving the accuracy of the grating 362.

[0059] Furthermore, such as Figure 5 As shown, two limiting rods 353 are fixedly connected between the two connecting plates 35, and the moving block 354 is slidably connected to the two limiting rods 353.

[0060] When the limiting rod 353 provided by the present invention is in use, the moving block 354 slides on the limiting rod 353 during the movement process, and the limiting rod 353 limits the moving block 354 to move in the horizontal direction.

[0061] Furthermore, such as Figure 4 As shown, the electrodes 334 all penetrate the horizontal arm 332, the horizontal plate 32, and the cover 22; a clamping mechanism is provided on the outer side of each electrode 334; each clamping mechanism includes two arc-shaped clamping plates 34; multiple fixing plates 341 are fixedly connected to the top of the horizontal arm 332, respectively located at both ends of the arc-shaped clamping plates 34; a bidirectional ball screw 343 is rotatably connected between the two fixing plates 341 at one end of the arc-shaped clamping plates 34 through a bearing, and two arc-shaped clamping plates 34 are threadedly connected to the bidirectional ball screw 343; a rotating block 344 is fixedly connected to one end of the bidirectional ball screw 343.

[0062] The clamping mechanism provided by the present invention is used to clamp the electrode 334. When the electrode 334 needs to be fixed, the rotating block 344 is rotated, which drives the bidirectional ball screw 343 to rotate. The bidirectional ball screw 343 drives the two arc-shaped clamping plates 34 to move in opposite directions. The arc-shaped clamping plates 34 clamp and fix the electrode 334, which facilitates the replacement and installation of the electrode 334.

[0063] Furthermore, if Figure 4 As shown, a guide rod 342 is fixed between two fixed plates 341 at the other end of the arc-shaped clamping plate 34, and the arc-shaped clamping plate 34 is slidably connected to the guide rod 342.

[0064] When the guide rod 342 provided by the present invention is in use, the arc-shaped clamping plate 34 slides on the guide rod 342 during the movement, and the guide rod 342 limits the arc-shaped clamping plate 34 to move in the horizontal direction.

[0065] Working principle: When the first detection mechanism provided by the present invention is used, a displacement sensor 335 is set to measure the lifting height of the electrode 334; a vision camera 42 is set on the outside of the furnace door, and the horizontal line where the center of the vision camera 42 is located is called the calibration line. The horizontal line where the lower edge of the furnace door is located is set as the liquid level reference zero point; the distance between the calibration line and the reference zero point is denoted as L1; the vision camera 42 records the moment when the end of the electrode 334 is located on the horizontal line where the center of the vision camera 42 is located. At the moment mentioned, the displacement sensor 335 starts to work. The value recorded by the displacement sensor 335 when the electrode 334 continues to descend until the electrode 334 starts to arc is the distance L2 that the electrode 334 descends from the calibration line; the arc length of the electric arc furnace is denoted as H; the distance between the current molten steel level and the lower edge of the furnace door is denoted as D, D = L2 + H - L1.

[0066] The distance from the descent of electrode 334 to the arc initiation point is measured by displacement sensor 335. The molten steel level in the electric arc furnace is measured using an empirical formula for arc length. Each time the end of electrode 334 descends past position L1, vision camera 42 recalibrates the displacement sensor 335 to zero. This method calibrates the end of electrode 334 during its descent, reducing detection errors. Furthermore, damage to electrode 334 during a single use can be corrected by the relationship between electrode 334 consumption and usage time, further reducing errors. During a period of operation, dust may accumulate on vision camera 42. By energizing slide rail 4, dust can be generated on the slide rail... 4. Drive the sliding rod 41 to move, which in turn drives the vision camera 42 to move. During the movement, the vision camera 42 presses against the baffle 45, which moves away from the cleaning brush 44, allowing the vision camera 42 to rub and clean the dust on the cleaning brush 44. During the pressing process, the baffle 45 drives the push plate 46 to slide on the sliding rod 47, and the spring 48 is compressed. Therefore, when the vision camera 42 moves in the opposite direction, the baffle 45 and the push plate 46 quickly return to their original positions under the action of the spring 48, which facilitates dust prevention on the cleaning brush 44. At the same time, the second detection mechanism is activated, which improves the detection accuracy and facilitates the continuous detection work when cleaning and maintaining the first detection mechanism.

[0067] When the second detection mechanism is in use, if electrode 334 is inside the furnace lid, it will block the light from grating 362, and the sensor will output a signal. When electrode 334 is removed from the furnace lid, it leaves the detection range of grating 362, the light is restored, and the sensor output signal changes. When grating 362 detects that electrode 334 has been removed from the furnace lid, the system immediately captures and records the current position of the cross arm 332. The position sensor of the conductive cross arm 332 and the grating 362 signal serve as trigger conditions to ensure that the recorded cross arm 332 position data corresponds to the instant electrode 334 is removed from the furnace lid, avoiding misjudgment. The grating 362 signal and the vision camera 42 together detect whether electrode 334 has completely left the furnace lid. If the grating 362 signal and the vision camera 42 result are inconsistent, the system can use a logic algorithm to eliminate errors and improve detection reliability.

[0068] When dust affects the detection of the grating 362, the first motor 351 is turned on. The output shaft of the first motor 351 drives the reciprocating screw 352 to rotate. The reciprocating screw 352 drives the moving block 354 to reciprocate. The moving block 354 drives the air gun 355 to reciprocate. The air gun 355 sprays air onto the grating 362 to blow the dust off the grating 362, thereby improving the accuracy of the grating 362.

[0069] When it is necessary to fix the electrode 334, the rotating block 344 is rotated, which drives the bidirectional ball screw 343 to rotate. The bidirectional ball screw 343 drives the two arc-shaped clamps 34 to move in opposite directions, and the arc-shaped clamps 34 clamp and fix the electrode 334, which facilitates the replacement and installation of the electrode 334.

[0070] When the cover 22 needs to be opened, the drive mechanism is activated. The extension or rotation of the drive mechanism drives one end of the wire rope 25 to rotate. The wire rope 25 passes around the fixed pulley 27 and drives the other end of the bracket 24 to move. The bracket 24 drives the cover 22 to move upward. The fixed pulley 27 can change the direction of one side of the robotic arm 28, but does not affect the direction of the bracket 24 and the fixed pulley 27, which facilitates the vertical movement of the cover 22. When the cover 22 is closed, the drive mechanism rotates in the opposite direction.

[0071] Obviously, the above embodiments are merely illustrative examples for clarity and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A molten steel level detection device, comprising a base plate (1), four support columns (2) fixedly connected to the top of the base plate (1), a ladle body (21) fixedly connected to the top of the four support columns (2), and a cover (22) installed on the ladle body (21); a steel outlet (23) is provided on the side wall of the ladle body (21), and a first detection mechanism is provided on one side of the steel outlet (23); characterized in that: The first detection mechanism includes a slide rail (4) fixed to one end of the top of the base plate (1), a sliding rod (41) slidably connected to the slide rail (4), a vision camera (42) fixed to the sliding rod (41), a fixing rod (43) provided on one side of the slide rail (4), a cleaning brush (44) attached to the side wall of the fixing rod (43) near the vision camera (42), a baffle (45) provided on the outer wall of the cleaning brush (44); a push plate (45) fixed to the side wall of the baffle (45) away from the vision camera (42). 6) One end of the push plate (46) is slidably connected to the fixed rod (43) through two slide rods (47). Springs (48) are sleeved on the outer wall of each slide rod (47). The two ends of the springs (48) are fixed to the push plate (46) and the slide rods (47) respectively. Three horizontal arms (332) are provided above the cover (22). Displacement sensors (335) are fixed to the bottom of each horizontal arm (332). A lifting mechanism is provided at one end of each horizontal arm (332). A second detection mechanism is also provided on the cover (22).

2. The steel liquid level detection device according to claim 1, characterized in that: The top of the base plate (1) away from the slide rail (4) is fixedly connected to a mounting platform (3). The top of the mounting platform (3) is fixedly connected to a rotating platform (31) via a second motor (38). The bottom of the rotating platform (31) is located on the top of the mounting platform (3) via four rollers (37). A horizontal plate (32) is fixedly connected to the top of the rotating platform (31).

3. The steel liquid level detection device according to claim 2, characterized in that: The top of the horizontal plate (32) is fixed with two first fixed seats (26), and each of the first fixed seats (26) is rotatably connected with a fixed pulley (27); the top of the cover (22) is symmetrically fixed with two card seats (24), and each of the card seats (24) is fixed with a wire rope (25); the top of the horizontal plate (32) away from the ladle body (21) is fixed with a second fixed seat (29), and a mechanical arm (28) is installed on the second fixed seat (29); the other end of the wire rope (25) is sleeved on the outside of the fixed pulley (27) and fixed to the mechanical arm (28); the mechanical arm (28) is provided with a drive mechanism.

4. The steel liquid level detection device according to claim 3, characterized in that: The lifting mechanism includes a support platform (33) fixed to the top of the horizontal plate (32), and three hydraulic cylinders (331) fixed to the top of the support platform (33). The output ends of the hydraulic cylinders (331) are respectively fixed to the bottom of the horizontal arm (332). Three vertical rods (333) are fixed to the top of the horizontal plate (32), and the horizontal arm (332) is slidably connected to the vertical rods (333).

5. The steel liquid level detection device according to claim 4, characterized in that: The second detection mechanism includes three gratings (362) fixed to the top of the cover (22), the width of each grating (362) covering the electrode (334), and a protective cover (36) is provided on the outside of the gratings (362), the protective cover (36) being fixed to the top of the cover (22).

6. The steel liquid level detection device according to claim 5, characterized in that: The protective cover (36) is provided with a cooling hood (361), and a cooling fan and a temperature sensor are installed inside the cooling hood (361).

7. The steel liquid level detection device according to claim 6, characterized in that: Two connecting plates (35) are fixedly connected to the top of the cover (22). A reciprocating screw (352) is rotatably connected between the two connecting plates (35) through a bearing. A moving block (354) is threaded onto the reciprocating screw (352). An air gun (355) is sleeved on the bottom of the moving block (354). An air storage tank (356) is fixedly connected to the bottom of the horizontal plate (32). The air gun (355) is connected to the air storage tank (356) through a hose. A first motor (351) is provided at one end of the reciprocating screw (352).

8. The steel liquid level detection device according to claim 7, characterized in that: Two limiting rods (353) are fixedly connected between the two connecting plates (35), and the moving block (354) is slidably connected to the two limiting rods (353).

9. A steel liquid level detection device according to claim 8, characterized in that: The electrodes (334) all penetrate the cross arm (332), the cross plate (32), and the cover (22); the outer side of each electrode (334) is provided with a clamping mechanism; each clamping mechanism includes two arc-shaped clamping plates (34); the top of the cross arm (332) is fixedly connected to multiple fixing plates (341), which are respectively located at both ends of the arc-shaped clamping plates (34); a bidirectional ball screw (343) is rotatably connected between the two fixing plates (341) at one end of the arc-shaped clamping plate (34) through a bearing, and two arc-shaped clamping plates (34) are threadedly connected to the bidirectional ball screw (343), and a rotating block (344) is fixedly connected to one end of the bidirectional ball screw (343).

10. A steel liquid level detection device according to claim 9, characterized in that: A guide rod (342) is fixed between the two fixed plates (341) at the other end of the arc-shaped clamp (34), and the arc-shaped clamp (34) is slidably connected to the guide rod (342).

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