Movable steel ladle baking device

Abstract

The utility model relates to the technical field of ferrous metallurgy, in particular to a movable steel ladle baking device which comprises a cover body, a burner device and a moving mechanism. The moving mechanism comprises a horizontal transverse moving part, a lifting part and a horizontal longitudinal moving part, the cover body can be suitable for steel ladles with different heights through the three parts, it can be guaranteed that the outlet nozzle is located in the center of the steel ladle, and compared with a crown block and the like used for adjusting the position of the steel ladle, operation is easier and more convenient, and cost is lower. In addition, the gas pipeline is laid in the cover body, on one hand, the cover body is cooled through normal-temperature combustion-supporting air in the gas pipeline, and on the other hand, in the steel ladle baking process, the combustion-supporting air can be preheated, the temperature of combustion flames is increased, the baking time is shortened, and the purposes of saving energy and reducing consumption are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of iron and steel metallurgy, in particular to a movable and efficient ladle baking device. Background Art

[0002] A ladle, also known as a steel ladle, steel can, or large ladle, etc., is used to store and transport molten steel or slag liquid. However, the temperature of the molten steel out of the furnace is as high as about 1600 °C, while the un-baked ladle is only at room temperature of about 25 °C. Therefore, in order to reduce the temperature drop loss of the molten steel and improve the service life of the ladle refractories, the ladle lining is usually baked to above 700 °C before use.

[0003] Gas baking of ladles is widely used because of its low cost and convenient operation. However, the existing gas baking devices have the following deficiencies: 1. The service life of the ladle cover is short. Long-term high-temperature baking causes the ladle cover refractories to erode and fall off; 2. The gas pressure is low, the flame after combustion is short, the baking range is small, and the effect is poor; 3. The position of the baking device is fixed, and the position of the ladle needs to be adjusted to align with the center of the ladle cover. Content of the Utility Model

[0004] The purpose of the utility model is to provide a movable ladle baking device, which has high baking efficiency and the ladle cover can move.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A movable ladle baking device includes a cover body, a burner device, and a moving mechanism; the burner device includes a central pipe and an outlet nozzle. The central pipe includes an inner pipe and an outer pipe, and the outer pipe is sleeved on the outer surface of the inner pipe. The outer pipe penetrates through the cover body, the inner pipe located above the cover body is connected to a gas source, the outer pipe is a closed end, and the outer pipe located below the cover body is connected to the outlet nozzle; the moving mechanism includes a horizontal transverse moving part, a lifting part, and a horizontal longitudinal moving part. One end of the horizontal transverse moving part is connected to the cover body, and the other end is connected to the lifting part, and the lifting part is located on the horizontal longitudinal moving part.

[0007] For the above-mentioned movable ladle baking device, a gas pipeline is provided inside the cover body. One end of the gas pipeline is connected to an air source, and the other end is connected to the outer pipe located inside the cover body.

[0008] For the above-mentioned movable ladle baking device, the outlet nozzle is of a Laval structure.

[0009] For the above-mentioned movable ladle baking device, the horizontal transverse moving part includes a moving cylinder, a push rod, a cover body support frame, a sliding rod, and a connecting rod. The moving cylinder is hinged to the connecting rod, the other end of the connecting rod is hinged to the push rod, the other end of the push rod is connected to the sliding rod, and the sliding rod is connected to the cover body through the cover body support frame.

[0010] For the above-mentioned mobile ladle baking device, the horizontal lateral movement part further includes a lateral support plate and an auxiliary rod. The auxiliary rod is arranged parallel to the sliding rod and is also connected to the cover support frame. Both ends of the auxiliary rod and the sliding rod are respectively connected to the lateral support plate, and the lateral support plate is provided with moving chutes that cooperate with the auxiliary rod and the sliding rod.

[0011] For the above-mentioned mobile ladle baking device, the lifting part includes a hydraulic cylinder and a fixed frame. A hydraulic cylinder is provided at the lower end of the fixed frame, and the telescopic end of the hydraulic cylinder is connected to the lower end face of the lifting plate.

[0012] For the above-mentioned mobile ladle baking device, the lifting part further includes guide blocks and sliding ways. Guide blocks are respectively connected to the sides of the lifting plate, and sliding ways are provided on the inner side surface of the fixed frame. The sliding ways cooperate with the guide blocks.

[0013] For the above-mentioned mobile ladle baking device, the horizontal longitudinal movement part includes caster tracks and casters located inside the caster tracks. The casters are connected to the lifting part, and the moving direction of the casters is perpendicular to the moving direction of the sliding rod.

[0014] The beneficial effects produced by adopting the above technical solutions are as follows:

[0015] The utility model drives the cover to move horizontally in the lateral and longitudinal directions through the horizontal lateral movement part and the horizontal longitudinal movement part. When the position of the ladle is fixed, the cover is moved so that the outlet nozzle is located at the center of the ladle. Compared with using a crane or the like to adjust the position of the ladle for the second time to align the center of the ladle with the outlet nozzle, the operation of the utility model is more convenient; secondly, the lifting part of the utility model can also drive the cover to move vertically, so that the cover can be applied to ladles with different heights, expanding the application range of the utility model.

[0016] The utility model lays gas pipelines inside the cover. On the one hand, the cover is cooled by the normal-temperature combustion-supporting air inside the gas pipelines. On the other hand, during the process of baking the ladle, the combustion-supporting air can be preheated, the temperature of the combustion flame is increased, the baking time is reduced, and the purpose of energy conservation and consumption reduction is achieved. At the same time, the outlet nozzle with a Laval structure can play an effect of accelerating the air flow, increasing the length and intensity of the combustion flame, thereby improving the baking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments.

[0018] Figure 1 It is a schematic structural diagram of the present utility model (not drawn to scale);

[0019] Figure 2Schematic diagram of the lifting part of the present utility model (not drawn to scale);

[0020] Figure 3 Schematic diagram of the outlet nozzle of the present utility model (not drawn to scale).

[0021] In the figure: 1. Cover body; 11. Gas pipeline; 21. Central pipe; 22. Outlet nozzle; 23. Inner pipe; 24. Outer pipe; 31. Moving cylinder; 32. Push rod; 33. Horizontal support plate; 34. Cover body support frame; 35. Sliding rod; 36. Moving chute; 37. Connecting piece; 38. Auxiliary rod; 40. Lifting plate; 41. Hydraulic cylinder; 42. Guide block; 43. Slideway; 44. Fixed frame; 45. Bottom plate; 51. Caster track; 52. Caster Specific implementation mode

[0022] Embodiment

[0023] As Figures 1-3 shown, a mobile ladle baking device includes a cover body 1, a burner device and a moving mechanism; the burner device includes a central pipe 21, an outlet nozzle 22 and an igniter. The central pipe 21 includes an inner pipe 23 and an outer pipe 24. The outer pipe 24 is sleeved on the outer surface of the inner pipe 23 and is composed of two concentric pipes with different thicknesses sleeved together. The outer pipe penetrates through the cover body 1. The inner pipe 23 located above the cover body 1 is connected to a gas source. The outer pipe 24 is a closed end. The side wall of the outer pipe 24 located inside the cover body 1 is connected to the gas pipeline 11. The outer pipe 24 located below the cover body 1 is connected to the outlet nozzle 22. The length of the inner pipe 23 at one end of the central pipe 21 connected to the outlet nozzle 22 is shorter than the length of the outer pipe 24 at the outlet to realize the mixing of gas and combustion-supporting air. An igniter is arranged inside the outlet nozzle 22.

[0024] Among them, an annular gas pipeline 11 is laid inside the cover body 1 of the present utility model. One end of the gas pipeline 11 located on the side of the ladle cover is connected to an air source, and the other end is located at the outer pipe 24 inside the cover body 1. Laying the gas pipeline 11 inside the cover body 1 can, on the one hand, cool the cover body 1 through the normal-temperature combustion-supporting air inside the gas pipeline 11, delay the erosion of refractory materials, and achieve the purpose of extending the service life of the cover body 1. On the other hand, during the process of baking the ladle, the combustion-supporting air can be preheated, and the heated high-temperature air then enters the burner device to be mixed with the gas for combustion. In this way, the temperature of the combustion flame can be increased. When the ladle can be heated to the same temperature, the baking time can be reduced, and less gas is consumed at the same time, thereby improving the baking efficiency and saving combustion-supporting air and gas.

[0025] As Figure 3As shown, the outlet nozzle 22 has a Laval structure. Through the process of the pipe diameter first changing from thick to thin and then thickening, it achieves the effect of accelerating the air flow, increasing the length of the combustion flame and enhancing its intensity, thereby improving the baking effect.

[0026] In addition, the moving mechanism of the present invention includes a horizontal lateral moving part, a lifting part, and a horizontal longitudinal moving part. One end of the horizontal lateral moving part is connected to the cover body 1, and the other end is connected to the lifting part, and the lifting part is located on the horizontal longitudinal moving part.

[0027] The horizontal lateral moving part of the present invention includes a moving cylinder 31, a push rod 32, a cover body support frame 34, a sliding rod 35, a connecting rod 37, and a lifting plate 40. The moving cylinder 31 is located on the upper end surface of the lifting plate 40, and its movable end is hinged to the connecting rod 37. The other end of the connecting rod 37 is hinged to the push rod 32. The other end of the push rod 32 is connected to the middle position of the sliding rod 35. The cross-section of the cover body support frame 34 is "n" - shaped, and its two ends are connected to the sliding rod 35, and the lower end surface is fixedly connected to the cover body 1. By the telescopic movement of the cylinder rod of the moving cylinder 31, the sliding rod 35 is driven to generate displacement, and then the cover body 1 is driven to move.

[0028] In addition, the horizontal lateral moving part of the present invention further includes a lateral support plate 33 and an auxiliary rod 38. The auxiliary rod 38 is arranged in parallel with the sliding rod 35 and is also connected to the cover body support frame 34 to play an auxiliary supporting role for the cover body support frame 34. The two ends of the auxiliary rod 38 and the sliding rod 35 are respectively connected to the lateral support plates 33. There are two lateral support plates 33, and their lower end surfaces are connected to the lifting plate 40, and a moving chute 36 penetrating both sides is provided on the upper part. The moving chute 36 cooperates with the auxiliary rod 38 and the sliding rod 35. The sliding rod 35 horizontally moves along the moving chute 36, driving the auxiliary rod 38 to also horizontally move along the moving chute 36. Stopping members are also provided at the two ends of the auxiliary rod 38 and the sliding rod 35 outside the moving chute, and the stopping members are used to prevent the moving paths of the auxiliary rod 38 and the sliding rod 35 from tilting.

[0029] Such as Figures 1-2As shown, there are four lifting parts, and the four lifting parts are symmetrically arranged in pairs at the four corners of the lifting plate 40. The lifting part includes a hydraulic cylinder 41, a guide block 42, a slideway 43 and a fixing frame 44. The longitudinal section of the fixing frame 44 is "L"-shaped, and a bottom plate 45 is provided below it. The hydraulic cylinder 41 is provided at the upper end of the bottom plate 45. The telescopic end of the hydraulic cylinder 41 is connected to the lower end face of the lifting plate 40. The lifting plate 40 and the components located on the lifting plate 40 are driven by the hydraulic cylinder 41 to move up and down. Two side edges at the corners of the lifting plate 40 are respectively connected with guide blocks 42, and the guide blocks 42 can move up and down with the lifting plate 40. Slideways 43 are provided on two inner side surfaces of the fixing frame 44, and the slideways 43 are matched with the guide blocks 42. Through the lifting parts, the cover body can be ensured to adapt to ladles with different heights, expanding the applicable range of the device.

[0030] The horizontal and longitudinal moving part of the present utility model includes a caster track 51 and casters 52 located inside the caster track. The casters 52 are connected to the lower end face of the bottom plate 45. The device is driven to move along the caster track 51 through the casters 52. The moving direction of the casters 52 is perpendicular to the moving direction of the sliding rod 35, which can enable the cover body 1 to move longitudinally or transversely in the horizontal direction according to the position of the ladle, ensuring that the outlet nozzle 22 is located at the center of the ladle, that is, the combustion flame is located at the center position of the ladle. The casters 52 are also provided with caster brakes. When the casters 52 move in place, the position of the device is fixed through the action of the caster brakes.

[0031] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A mobile ladle baking device, characterized in that: It includes a cover body (1), a burner device, and a moving mechanism; the burner device includes a central tube (21) and an outlet nozzle (22), the central tube (21) includes an inner tube (23) and an outer tube (24), the outer tube (24) is sleeved on the outer surface of the inner tube (23), wherein the outer tube (24) penetrates through the cover body (1), the inner tube (23) located above the cover body (1) is connected to a gas source, the outer tube (24) is a closed end, and the outer tube (24) located below the cover body (1) is connected to the outlet nozzle (22); the moving mechanism includes a horizontal transverse moving part, a lifting part, and a horizontal longitudinal moving part, one end of the horizontal transverse moving part is connected to the cover body (1), the other end is connected to the lifting part, and the lifting part is located on the horizontal longitudinal moving part.

2. The mobile ladle baking device according to claim 1, wherein: A gas pipeline (11) is provided inside the cover body (1), one end of the gas pipeline (11) is connected to an air source, and the other end is connected to the outer tube (24) located inside the cover body (1).

3. The mobile ladle baking device according to claim 1 or 2, characterized in that: The outlet nozzle (22) has a Laval structure.

4. The mobile ladle baking device according to claim 3, wherein: The horizontal transverse moving part includes a moving cylinder (31), a push rod (32), a cover body support frame (34), a sliding rod (35), and a connecting rod (37), the moving cylinder (31) is hinged to the connecting rod (37), the other end of the connecting rod (37) is hinged to the push rod (32), the other end of the push rod (32) is connected to the sliding rod (35), and the sliding rod (35) is connected to the cover body (1) through the cover body support frame (34).

5. The mobile ladle baking device according to claim 4, characterized in that: The horizontal transverse moving part further includes a transverse support plate (33) and an auxiliary rod (38), the auxiliary rod (38) is arranged parallel to the sliding rod (35), and the auxiliary rod (38) is also connected to the cover body support frame (34), both ends of the auxiliary rod (38) and the sliding rod (35) are respectively connected to the transverse support plate (33), and the transverse support plate (33) is provided with moving chutes (36) that cooperate with the auxiliary rod (38) and the sliding rod (35).

6. The mobile ladle baking device according to claim 3, characterized in that: The lifting part includes a hydraulic cylinder (41) and a fixing frame (44), the hydraulic cylinder (41) is provided at the lower end of the fixing frame (44), and the telescopic end of the hydraulic cylinder (41) is connected to the lower end surface of the lifting plate (40).

7. The mobile ladle baking device according to claim 6, wherein: The lifting part further includes guide blocks (42) and slideways (43), guide blocks (42) are respectively connected to the sides of the lifting plate (40), slideways are provided on the inner side surface of the fixing frame (44), and the slideways (43) cooperate with the guide blocks (42).

8. The mobile ladle baking device according to claim 5, characterized in that: The horizontal longitudinal moving part includes a caster track (51) and casters (52) located inside the caster track, the casters (52) are connected to the lifting part, and the moving direction of the casters (52) is perpendicular to the moving direction of the sliding rod (35).

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