Splash-proof steel ladle cover for refined steel

Abstract

The utility model discloses a refined steel splash-proof steel ladle cover which comprises a cover body and a positioning mechanism, the positioning mechanism is arranged on the cover body and used for connecting the cover body and a steel ladle, the cover body comprises a ring body, a first plate and a second plate, the positioning mechanism is arranged on the periphery of the ring body, the first plate is arranged at one end of the ring body, a plurality of pressure relief holes are formed in the first plate, and the second plate is arranged on the periphery of the ring body. The second plate is arranged on the inner wall of the ring body, a cavity is formed between the second plate and the first plate in a spaced mode, a hopper-shaped center hole with an opening facing the first plate is formed in the second plate, and the pressure reduction plate is in a circular truncated cone shape and matched with the center hole. After sealing, pressure gas can push the pressure reduction plate to overcome the elasticity of the first elastic structure to communicate with the cavity, then the gas is discharged into the atmosphere through the center hole, the cavity and the pressure relief hole for pressure relief, certain pressure and temperature can be guaranteed, hidden dangers caused by too large pressure can be avoided, and surface layer condensation caused by open pressure relief is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ladle covers, and more specifically, relates to a splash-proof ladle cover for refining steel. Background Art

[0002] Steelmaking is a type of steel processed through a refining process during the iron and steel smelting process. Its purpose is to improve the purity and uniformity of the steel, reduce the content of impurities and gases, and thus improve the properties of the steel. The splash-proof ladle cover is a covering for a ladle furnace, usually made of refractory materials.

[0003] Traditional ladle covers are often directly covered on the ladle, lacking a rapid pressure relief function. When the pressure in the ladle is too high, danger may occur. Excessive pressure may cause damage to the ladle or the cover body, increasing the maintenance and replacement costs. However, simply opening the vent to relieve pressure easily reduces the temperature inside the ladle, thus affecting the internal quality of the molten steel. Summary of the Utility Model

[0004] The purpose of the utility model is to address the deficiencies in the existing technology and provide a splash-proof ladle cover for refining steel, solving the problem that simply opening the vent to relieve pressure easily reduces the temperature inside the ladle, thus affecting the internal quality of the molten steel.

[0005] To achieve the above purpose, the utility model provides a splash-proof ladle cover for refining steel, including:

[0006] A cover body and a positioning mechanism. The positioning mechanism is arranged on the cover body and is used to connect the cover body and the ladle. The cover body includes:

[0007] A ring body, on the outer periphery of which the positioning mechanism is arranged;

[0008] A first plate, arranged at one end of the ring body, and provided with a plurality of pressure relief holes on the first plate;

[0009] A second plate, arranged on the inner wall of the ring body, forming a cavity at an interval with the first plate, and provided with a funnel-shaped central hole on the second plate with an opening facing the first plate;

[0010] A pressure reducing plate, in a frustum shape, cooperating with the central hole. A first elastic mechanism is arranged between the pressure reducing plate and the first plate, and the first elastic mechanism provides a force to move the pressure reducing plate away from the first plate and block the central hole.

[0011] Optionally, the positioning mechanism includes:

[0012] A connecting plate, with a lifting lug arranged at one end, and the other end of the connecting plate is connected to the first plate through a tension spring;

[0013] A limiting block, which is arranged at one end of the connecting plate close to the first plate and is used to keep a gap between the connecting plate and the first plate;

[0014] A slide rail, which is arranged on the first plate. A slider is slidably connected to the slide rail, and one end of the slider extends out of the cover body;

[0015] A push-pull rod, with both ends of the push-pull rod connected to the slider and the limiting block respectively;

[0016] A positioning rod, the middle part of the positioning rod is rotatably connected to the outer periphery of the ring body through a hinge point. One end of the positioning rod is rotatably connected to the exposed end of the slider, and the other end of the positioning rod extends out of the ring body and is used to clamp the ladle.

[0017] Optionally, the positioning mechanism further includes:

[0018] A second elastic mechanism, which is arranged between the positioning rod and the cover body and is used to provide a force for clamping the ladle by the positioning rod;

[0019] A movable plate, which is axially slidably connected inside the ring body, and the movable plate can block the ladle;

[0020] A through hole, which is arranged at the center of the movable plate and is used to connect the ladle and the central hole;

[0021] A sealing plate, a first chute is arranged on the side wall of the ring body. One end of the sealing plate is connected to the movable plate, and the other end of the sealing plate is slidably connected in the first chute and is used to prevent the first chute from communicating the inside and outside of the ring body;

[0022] A connecting head, a second chute is arranged on the positioning rod. One end of the connecting head is hinged to the sealing plate, and the other end of the connecting head is slidably connected to the second chute.

[0023] Optionally, the first chute includes a through groove, the through groove communicates the inside and outside of the ring body, and a slot is arranged at the upper end of the through groove. The upper end of the sealing plate is slidably inserted into the slot.

[0024] Optionally, the second chute includes a T-shaped groove, and the T-shaped groove is located between the second elastic mechanism and the hinge point.

[0025] Optionally, the cover body is in a disc shape, and at least three slide rails are circumferentially distributed.

[0026] Optionally, a limiting rod is arranged at the lower end of the limiting block, and the lower end of the limiting rod is slidably inserted into the limiting hole of the first plate.

[0027] Optionally, the pressure relief hole is connected with a sirene.

[0028] Optionally, the sirene is located below the connecting plate and not higher than the limiting block.

[0029] Optionally, the pressure relief hole is connected with a pressure relief pipe and a turbine.

[0030] The utility model provides a splash-proof ladle cover for refining steel, and its beneficial effects are as follows:

[0031] 1. The splash-proof ladle cover for refining steel closes the ladle through the cover body. After closing, the pressurized gas can push the pressure reducing plate to overcome the elastic force of the first elastic structure to communicate with the cavity, and then the gas is discharged into the atmosphere through the central hole, the cavity and the pressure relief hole for pressure relief. It can not only ensure a certain pressure and temperature, but also avoid potential hazards caused by excessive pressure, and avoid surface condensation caused by open pressure relief.

[0032] 2. The splash-proof ladle cover for refining steel is provided with a positioning mechanism to ensure accurate positioning of the cover body, reduce operation time and labor intensity. And accurate positioning reduces the error in the placement process, reduces the safety risk and material waste caused by improper placement. At the same time, it reduces the wear of the equipment and the cover body caused by frequent adjustment, and prolongs its service life.

[0033] 3. When the splash-proof ladle cover for refining steel is transported, it can ensure sealing, heat preservation and pressure maintenance. When the pressure exceeds the limit, it can automatically relieve pressure to maintain stability, prevent equipment damage or explosion caused by excessive pressure, and can also effectively reduce the heat loss of the molten steel during transportation and treatment, and reduce energy consumption. And it can be automatically locked and unlocked, which is convenient for covering and using.

[0034] Other features and advantages of the utility model will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] By describing the exemplary embodiments of the utility model in more detail in conjunction with the drawings, the above and other objects, features and advantages of the utility model will become more obvious. Among them, in the exemplary embodiments of the utility model, the same reference numerals generally represent the same components.

[0036] Figure 1 The structural schematic diagram of the splash-proof ladle cover for refining steel according to an embodiment of the utility model is shown.

[0037] Figure 2 The structural schematic diagram of the top view of the splash-proof ladle cover for refining steel according to an embodiment of the utility model is shown.

[0038] Figure 3 The Figure 2 enlarged view of part A of the splash-proof ladle cover for refining steel according to an embodiment of the utility model is shown.

[0039] Figure 4 Shows an exploded view of the vibrator of the splash-proof ladle cover for refined steel according to an embodiment of the present invention.

[0040] Figure 5 Shows a cross-sectional view of the splash-proof ladle cover for refined steel according to an embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 1. Cover body; 2. Positioning rod; 3. Movable plate; 4. Second elastic mechanism; 5. Connector; 6. Lifting lug; 7. Connecting plate; 8. Limiting rod; 9. Tension spring; 10. Pressure-reducing plate; 11. First elastic mechanism; 12. Pressure-relief pipe; 13. Air whistle; 14. Slide rail; 15. Slide block; 16. Limiting block; 17. Push-pull rod; 18. First chute; 19. Block; 20. Sealing plate; 21. Contact block; 22. Second chute; 23. Hinge point; 24. Second plate; 25. Pressure-relief hole; 26. Through hole; 27. Turbine. Detailed implementation manners

[0043] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0044] As Figures 1-5 shown, a splash-proof ladle cover for refined steel includes:

[0045] A cover body 1 and a positioning mechanism, the positioning mechanism is arranged on the cover body 1 and is used to connect the cover body 1 and the ladle. The cover body 1 includes:

[0046] A ring body, and the positioning mechanism is arranged on the outer periphery of the ring body;

[0047] A first plate, the first plate is arranged at one end of the ring body, and a plurality of pressure-relief holes 25 are arranged on the first plate;

[0048] A second plate 24, the second plate 24 is arranged on the inner wall of the ring body, and a cavity is formed at an interval from the first plate. A funnel-shaped central hole with an opening facing the first plate is arranged on the second plate 24;

[0049] A pressure-reducing plate 10, the pressure-reducing plate is frustum-shaped and is matched with the central hole. A first elastic mechanism 11 is arranged between the pressure-reducing plate and the first plate, and the first elastic mechanism 11 provides a force to make the pressure-reducing plate 10 move away from the first plate and block the central hole.

[0050] Specifically, the ladle is closed by the cover body 1. After closing, the pressurized gas can push the pressure reducing plate 10 to overcome the elasticity of the first elastic structure 11 to connect the cavity, so that the gas is discharged into the atmosphere through the central hole, the cavity and the pressure relief hole 25 for pressure relief. This can not only ensure a certain pressure and temperature, but also avoid potential hazards caused by excessive pressure and prevent surface condensation caused by open pressure relief.

[0051] In this embodiment, the positioning mechanism includes:

[0052] A connecting plate 7, one end of the connecting plate 7 is provided with a lifting lug 6, and the other end of the connecting plate 7 is connected to the first plate through a tension spring 9;

[0053] A limiting block 16, the limiting block 16 is arranged at one end of the connecting plate 7 close to the first plate, and is used to keep a gap between the connecting plate 7 and the first plate;

[0054] A slide rail 14, the slide rail 14 is arranged on the first plate, and a slider 15 is slidably connected to the slide rail 14, and one end of the slider 15 extends out of the cover body 1;

[0055] A push-pull rod 17, both ends of the push-pull rod 17 are respectively connected to the slider 15 and the limiting block 16;

[0056] A positioning rod 2, the middle of the positioning rod 2 is rotationally connected to the outer periphery of the ring body through a hinge point 23, one end of the positioning rod 2 is rotationally connected to the exposed end of the slider 15, and the other end of the positioning rod 2 extends out of the ring body and is used for clamping the ladle.

[0057] Specifically, when covering the lid, the cover body 1 is moved through the lifting lug 6. The cover body 1 falls on the ladle. The connecting plate 7 approaches the cover body 1 under the action of the tension spring 9 and gravity. Then, the slider 15 is driven by the push-pull rod 17 to drive the positioning rod 2 to move, so that the lever structure formed by the positioning rod 2 clamps the ladle;

[0058] When separating, the cover body 1 is moved through the lifting lug 6, the connecting plate 7 moves away from the cover body 1, and at the same time, the slider 15 is driven by the push-pull rod 17 to drive the positioning rod 2 to move, so that the lever structure formed by the positioning rod 2 releases the ladle.

[0059] Furthermore, the lower end of the positioning rod 2 is detachably connected with a contact block 21. The contact block 21 contacts the ladle. The detachable contact block 21 is convenient for maintenance and can adapt to the high temperature of the ladle.

[0060] In this embodiment, the positioning mechanism further includes:

[0061] A second elastic mechanism 4, the second elastic mechanism 4 is arranged between the positioning rod 2 and the cover body 1, and is used to provide a force for clamping the ladle by the positioning rod 2;

[0062] A movable plate 3, the movable plate 3 is axially slidably connected inside the ring body, and the movable plate 3 can block the ladle;

[0063] The via hole 26 is arranged at the center of the movable plate 3 and is used to connect the ladle and the central hole;

[0064] The sealing plate 20 is provided with a first sliding groove 18 on the side wall of the ring body. One end of the sealing plate 20 is connected to the movable plate 3, and the other end of the sealing plate 20 is slidably connected in the first sliding groove 18 to prevent the first sliding groove 18 from communicating the inside and outside of the ring body;

[0065] The connecting head 5 is provided with a second sliding groove 22 on the positioning rod 2. One end of the connecting head 5 is hinged to the sealing plate 20, and the other end of the connecting head 5 is slidably connected to the second sliding groove 22.

[0066] Specifically, when the cover is buckled, the movable plate 3 first contacts the ladle, and then approaches the second plate 24, causing the sealing plate 20 and the connecting head 5 to move, and then driving the positioning rod 2 to move through the connecting head 5, preventing the positioning rod 2 from remaining in a clamped state.

[0067] Furthermore, the first elastic mechanism 11 and the second elastic mechanism 4 are respectively springs, and a clamping block 19 is arranged on the sealing plate 20 for limiting.

[0068] In this embodiment, the first sliding groove 18 includes a through groove that communicates the inside and outside of the ring body. A slot is arranged at the upper end of the through groove, and the upper end of the sealing plate 20 is slidably inserted into the slot.

[0069] Specifically, one end of the sealing plate 20 always remains inserted into the slot to prevent the first sliding groove 18 from leaking pressure.

[0070] In this embodiment, the second sliding groove 22 includes a T-shaped groove located between the second elastic mechanism and the hinge point.

[0071] Specifically, the connecting head 5 includes a T-shaped block that cooperates with the T-shaped groove, and the two cooperate to prevent separation.

[0072] In this embodiment, the cover body 1 is in a disc shape, and at least three slide rails 14 are circumferentially distributed.

[0073] Specifically, a plurality of slide rails 14 and positioning rods 2 are circumferentially distributed to ensure uniform force on the cover body 1.

[0074] In this embodiment, a limiting rod 8 is arranged at the lower end of the limiting block 16, and the lower end of the limiting rod 8 is slidably inserted into the limiting hole of the first plate.

[0075] Specifically, the limiting rod 8 prevents the connecting plate from twisting.

[0076] Furthermore, the limiting rod 8 passes through the first plate and the second plate 24 and is connected to the movable plate 3 (sealing treatment, packing or sealing ring can be set) to limit the movement distance of the connecting plate 7 and ensure the synchronous movement of the movable plate 3 and the connecting plate 7.

[0077] In this embodiment, a pressure relief hole 25 is connected to an air siren 13.

[0078] Specifically, when the pressure is relieved, a warning is given through the air siren 13.

[0079] In this embodiment, the air siren 13 is located below the connecting plate and not higher than the limiting block 16.

[0080] Specifically, the limiting block 16 prevents the connecting plate 7 from squeezing the air siren 13.

[0081] In this embodiment, the pressure relief hole 25 is connected to a pressure relief pipe 12 and a turbine 27.

[0082] Specifically, the cooperation of the pressure relief pipe 12 and the turbine 27 speeds up the pressure relief.

[0083] When the refined steel splash-proof ladle cover of this embodiment is in use, the specific process is as follows:

[0084] During use, when the device is fixed on the lifting lug 6 and the connecting plate 7 is lifted by pulling the lifting lug 6, at this time, the connecting rod 8 drives the movable plate 3 to slide on the cover body 1, and the tension spring 9 is stretched under the influence of the gravity of the cover body 1. During this process, the limit block 16 rises, driving the push-pull rod 17 to move, so that the slider 15 rotatably connected to one end of the push-pull rod 17 slides in the slide rail 14, and the slider 15 pulls the positioning rod 2, thereby driving the positioning rod 2 to expand outwards. At the same time, the connecting plate 7 is lifted. At this time, the movable plate 3 slides in the cover body 1, thereby driving the sealing plate 20 to slide in the first chute 18 inside the cover body 1, and the clamping block 19 also slides at the same time, driving the connecting head 5 to slide in the second chute 22 of the positioning rod 2. At this time, as the movable plate 3 rises, after the clamping block 19 reaches the designated position, due to the connection between the connecting head 5 and the positioning rod 2, the second elastic mechanism 4 starts to be compressed. Since the positioning rod 2 is rotatably connected to the hinge point 23 on the cover body 1, the lower end of the positioning rod 2 expands outwards. When the cover body 1 needs to be placed on the ladle, the tension spring 9 operates, pulling the connecting plate 7, and the connecting plate 7 also descends under the influence of gravity, so that the movable plate 3 fixedly connected to the connecting rod 8 is reset. The expanded positioning rod 2 tightly clamps the ladle, so that the position of the cover body 1 and the ladle is correctly matched. During this process, at this time, the movable plate 3 descends under the influence of gravity, thereby driving the clamping block 19 and the connecting head 5 to descend. When descending to the bottom end, the compressed second elastic mechanism 4 starts to expand outwards, pushing the contact block 21 at the bottom end of the positioning rod 2 to contact the ladle shell, thereby obtaining a clamping force, so that the position of the cover body 1 and the ladle is correctly matched. With the cooperation of the reset mechanism and the positioning mechanism, it is extremely convenient to place and take the cover body 1. When the cover body 1 is pressed on the ladle, a great pressure is generated inside the ladle at this time. These air pressures push the pressure-reducing plate 10 separated from the second plate 24. (The weight of the pressure-reducing plate 10 is extremely low. Secondly, the elastic force of the first elastic mechanism 11 is equal to the gravity of the pressure-reducing plate 10. In the static state, the two are balanced), and at this time, the air pressure passes through the through hole 26 to the pressure relief hole 25 of the cover body 1, and enters the air whistle 13 respectively, urging the air whistle 13 to sound a warning, and some others enter the pressure relief pipe 12 and are quickly connected to the outside through the turbine 27, so that the pressure is suddenly released, and the pressure-reducing plate 10 rebounds quickly to ensure the temperature inside the ladle.

[0085] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments.

Claims

1. A splash-proof ladle cover for refined steel, characterized in that, Comprising: A cover body and a positioning mechanism. The positioning mechanism is arranged on the cover body and is used to connect the cover body and the ladle. The cover body includes: A ring body, and the positioning mechanism is arranged on the outer circumference of the ring body; A first plate, which is arranged at one end of the ring body, and a plurality of pressure relief holes are arranged on the first plate; A second plate, which is arranged on the inner wall of the ring body and forms a cavity at an interval from the first plate. A funnel-shaped central hole with an opening facing the first plate is arranged on the second plate; A pressure reducing plate, which is frustum-shaped and is matched with the central hole. A first elastic mechanism is arranged between the pressure reducing plate and the first plate, and the first elastic mechanism provides a force to make the pressure reducing plate move away from the first plate and block the central hole.

2. The refined steel splash-proof ladle cover according to claim 1, characterized in that, The positioning mechanism includes: A connecting plate, with a lifting lug arranged at one end of the connecting plate, and the other end of the connecting plate is connected to the first plate through a tension spring; A limiting block, which is arranged at one end of the connecting plate close to the first plate and is used to keep a gap between the connecting plate and the first plate; A slide rail, which is arranged on the first plate, and a slider is slidably connected to the slide rail, and one end of the slider protrudes outside the cover body; A push-pull rod, with both ends of the push-pull rod respectively connected to the slider and the limiting block; A positioning rod, the middle of which is rotationally connected to the outer circumference of the ring body through a hinge point. One end of the positioning rod is rotationally connected to the exposed end of the slider, and the other end of the positioning rod protrudes outside the ring body and is used to clamp the ladle.

3. The refined steel splash-proof ladle cover according to claim 2, characterized in that, The positioning mechanism further includes: A second elastic mechanism, which is arranged between the positioning rod and the cover body and is used to provide a force to clamp the ladle by the positioning rod; A movable plate, which is axially slidably connected inside the ring body and can block the ladle; A through hole, which is arranged at the center of the movable plate and is used to connect the ladle and the central hole; A sealing plate, a first sliding groove is arranged on the side wall of the ring body, one end of the sealing plate is connected to the movable plate, and the other end of the sealing plate is slidably connected in the first sliding groove and is used to prevent the first sliding groove from communicating the inside and outside of the ring body; A connecting head, a second sliding groove is arranged on the positioning rod, one end of the connecting head is hinged to the sealing plate, and the other end of the connecting head is slidably connected to the second sliding groove.

4. The refined steel splash-proof ladle cover according to claim 3, wherein The first sliding groove includes a through groove, the through groove communicates the inside and outside of the ring body, and a slot is arranged at the upper end of the through groove, and the upper end of the sealing plate is slidably inserted into the slot.

5. The refined steel splash-proof ladle cover according to claim 3, characterized in that, The second sliding groove includes a T-shaped groove, and the T-shaped groove is located between the second elastic mechanism and the hinge point.

6. The refined steel splash-proof ladle cover according to claim 2, characterized in that, The cover body is disc-shaped, and at least three slide rails are circumferentially distributed.

7. The refined steel splash-proof ladle cover according to claim 2, characterized in that, A limiting rod is arranged at the lower end of the limiting block, and the lower end of the limiting rod is slidably inserted into the limiting hole of the first plate.

8. The refined steel splash-proof ladle cover according to claim 2, characterized in that, The pressure relief hole is connected to a siren.

9. The refined steel splash-proof ladle cover according to claim 8, characterized in that, The siren is located below the connecting plate and is not higher than the limiting block.

10. The refined steel splash-proof ladle cover according to claim 1, characterized in that, The pressure relief hole is connected to a pressure relief pipe and a turbine.

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