Improved steel ladle drying device

Abstract

The utility model discloses an improved steel ladle drying device which comprises a machine frame, a gas pipeline and a combustion-supporting gas pipeline are symmetrically arranged on the machine frame, the diameter of the gas pipeline is larger than that of the combustion-supporting gas pipeline, the gas pipeline and the combustion-supporting gas pipeline converge at a burner on a baking cover and are connected into the baking cover, and a return pipeline is led out of the baking cover to be communicated with the gas pipeline. And the burner leads out the recovery pipeline to be communicated with the gas pipeline. Through structural improvement, gas which is excessively introduced into the burner and gas with a large amount of heat after combustion are classified and recycled, so that the production cost and the energy consumption are effectively reduced; combusted gas is filtered through a filter screen, the combustion quality is improved, and the drying effect is better; the filter screen is replaced and adjusted through the movable turntable, so that frequent uncovering, cleaning and pipeline dredging are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ladle production, and more specifically, it relates to an improved ladle drying device. Background Art

[0002] The drying of the ladle is a necessary treatment measure before the ladle is used to ensure the quality of molten steel and production efficiency. Through the ladle baking treatment, the oxygen content in the ladle can be effectively reduced, impurities can be adsorbed, and the combustion effect of the smelting flame can be effectively improved.

[0003] A large amount of hot gas and waste gas will be generated during the ladle drying process, which carry a large amount of impurities and heat. Direct emission not only causes waste of energy, but also leads to environmental pollution. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an improved ladle drying device to solve one or more of the above problems.

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

[0006] The improved ladle drying device includes a frame. Symmetric gas pipelines and combustion-supporting gas pipelines are provided on the frame. The diameter of the gas pipeline is larger than that of the combustion-supporting gas pipeline. The gas pipeline and the combustion-supporting gas pipeline converge at a burner on the baking cover and are connected into the baking cover. A return pipeline is led out from the baking cover and connected to the gas pipeline, and a recovery pipeline is led out from the burner and connected to the gas pipeline.

[0007] Further, the inside of the baking cover is hollow. A rotatable gear disk is provided inside the baking cover. At least six through slots are formed in the gear disk and are distributed in a circumferential array. At least three different grades of filter meshes are provided in the through slots, and the filter meshes are arranged corresponding to the return pipeline.

[0008] Further, a support frame is additionally provided outside the combustion-supporting gas pipeline, and the support frame abuts against the baking cover and the frame respectively.

[0009] Further, the frame includes a base tower, a rotating frame and a connecting frame. The base tower is grounded. The rotating frame is rotatably provided at the top of the base tower. The connecting frame is horizontally arranged and is respectively connected to the rotating frame and the baking cover.

[0010] Further, the rotating frame is of a drum structure, the connecting frame is of a symmetric structure as a whole, and the gas pipeline and the combustion-supporting gas pipeline respectively pass through the corresponding ends of the rotating frame and the corresponding sides of the connecting frame in sequence.

[0011] Further, a hanging bracket is provided on the rotating frame. The hanging bracket is arranged away from the connecting frame. A lifting device is provided on the ground. The lifting device drives the baking cover to rotate through a steel wire rope, the hanging bracket, the rotating frame and the connecting frame.

[0012] Further, regulating valves and cut-off valves are provided on both the gas pipeline and the combustion-supporting gas pipeline. A stop valve is further provided on the gas pipeline, and a cassette induced draft fan is provided on the combustion-supporting gas pipeline.

[0013] Further, the gas outlets at the ends of the gas pipeline and the combustion-supporting gas pipeline are butted against the burner. The gas outlet after the burner is ignited is butted against the inside of the baking cover, and the gas outlet before the burner is ignited is butted against the recovery pipeline.

[0014] In summary, the utility model has the following beneficial effects: through structural improvement, the gases excessively introduced into the burner and the gases with a large amount of heat after combustion are classified and recovered, effectively reducing production costs and energy consumption; the burned gases are filtered through a filter screen to improve the combustion quality and the drying effect is better; the filter screen is replaced and adjusted through a movable turntable, avoiding frequent opening of the cover for disassembly and cleaning and dredging of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of an embodiment provided by the utility model;

[0016] Figure 2 is a planar structural schematic diagram of an embodiment provided by the utility model;

[0017] Figure 3 is a structural schematic diagram of a gear disk in an embodiment provided by the utility model.

[0018] In the figure: 10, frame; 11, base tower; 12, rotating frame; 13, connecting frame; 14, hanging bracket; 15, lifting device; 20, gas pipeline; 30, combustion-supporting gas pipeline; 31, support frame; 40, baking cover; 41, burner; 42, return pipeline; 43, recovery pipeline; 44, gear disk; 45, filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Embodiment:

[0020] The following further Figures 1-3 describes the present utility model in detail with reference to the attached

[0021] The improved ladle drying device has a main body of a baking cover 40 with a burner 41, which is installed on a frame 10. The frame 10 includes a base tower 11, a rotating frame 12, a connecting frame 13 and a hanger 14. The base tower 11 is a symmetrical double tower, the rotating frame 12 is rotatably arranged on the top of the base tower 11, the hanger 14 is tilted upward and arranged on the back of the rotating frame 12, and the rotating frame 12 is horizontally connected to the connecting frame 13 on the front. The hanger 14 is used in correspondence with the lifting equipment 15 set on the ground. The lifting equipment 15 acts on the rotating frame 12 and the connecting frame 13 through the wire rope and the hanger 14, thereby driving the baking cover 40 to rotate. The pipeline at the rotating position is provided with a rotating compensator to prevent the pipeline from being damaged due to the rotating action, resulting in gas leakage. The rotating frame 12 is a drum structure, and the connecting frame 13 is a symmetrical structure. The width of the left connecting frame 13 is smaller than that of the right connecting frame 13. The left connecting frame 13 is additionally equipped with a support frame 31 to make up for the problem of left structural strength deviation caused by the small pipe diameter. The diameter of the gas pipeline 20 is larger than that of the combustion-supporting gas pipeline, so this arrangement is required. The support frame 31 must abut the baking cover 40 and the frame 10 respectively. The rotating frame 12 and the connecting frame 13 are connected inside to facilitate the subsequent laying of pipelines. The gas pipeline 20 is connected to the right frame 10, and the combustion-supporting gas pipeline 30 is connected to the left frame 10. In addition to the welding section that connects to the baking cover 40, the connecting frame 13 leads to a special confluence end to connect to the burner 41. The burner 41 is normally set on the baking cover 40. The burner 41 has two gas outlets, one at the upper end of the ignition device, which is the unignited area, used to discharge excess supply of gas and combustion-supporting gas; the other is at the lower end of the ignition device, which is the ignition area, used to discharge the gas produced after combustion. This type of gas generally carries a lot of heat and can be reused. The gas outlet at the upper end leads out a recovery pipeline 43, which is connected to the gas pipeline 20. Generally, the gas is unburned pure gas and combustion-supporting gas; the gas outlet at the lower end is first introduced into the baking cover 40, and then leads out a return pipeline 42, which is connected to the gas pipeline 20 to preheat the gas in the pipeline for faster and better combustion.

[0022] The grill cover 40 is hollow inside, and the gas after combustion flows inside the grill cover 40, with a part of it being directly discharged and a part of it being reused. In addition, a rotatable gear plate 44 is provided inside the grill cover 40, and six arrays of through slots are provided on the gear plate 44 along the circumference. Two slots in the slots that are on the same straight line are provided with filter screens 45 of the same filter mesh size, so that there are a total of three groups of filter screens 45 with different filtration levels. The filter screens 45 are provided corresponding to the positions of the return pipes 42 on the grill cover 40, ensuring that the filter screens 45 can be fully adapted to the gas outlet there after rotation. The three levels of filter screens 45 can be used in a step-by-step manner, and each level of filter screen 45 also has a spare filter screen 45 to replace, so as to avoid frequent disassembly, cleaning or replacement as much as possible.

[0023] Regulating valves and cut-off valves are provided on both the gas pipeline 20 and the combustion-supporting gas pipeline 30. A stop valve is also provided on the gas pipeline 20, and a cassette induced draft fan is provided on the combustion-supporting gas pipeline 30 to achieve the basic control of the pipeline and the gas transmission requirements.

[0024] The solution of this application is designed in sections according to the recycling requirements of the pipeline, and specific supplements are made for this design concept, such as structural strengthening and filtering out impurities, etc.

[0025] It should be noted that this specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute creatively according to needs, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. An improved ladle drying device, comprising a frame (10), characterized in that: The frame (10) is provided with symmetrical gas pipelines (20) and combustion-supporting gas pipelines (30); the gas pipeline (20) has a larger diameter than the combustion-supporting gas pipeline (30); the gas pipeline (20) and the combustion-supporting gas pipeline (30) meet at a burner (41) on a baking cover (40) and are connected to the baking cover (40); a return pipeline (42) is led out of the baking cover (40) and is connected to the gas pipeline (20); and a recovery pipeline (43) is led out of the burner (41) and is connected to the gas pipeline (20).

2. The improved ladle drying device according to claim 1, characterized in that: The baking cover (40) is hollow inside, and a rotatable gear plate (44) is provided inside the baking cover (40). The gear plate (44) is provided with at least six through slots that penetrate through the gear plate and are distributed in a circumferential array. At least three filter screens (45) of different grades are provided in the through slots, and the filter screens (45) are arranged corresponding to the return pipeline (42).

3. The improved ladle drying device according to claim 1, characterized in that: The combustion-supporting gas pipeline (30) is additionally provided with a support frame (31), and the support frame (31) abuts against the baking cover (40) and the frame (10) respectively.

4. The improved ladle drying device according to claim 1, characterized in that: The frame (10) comprises a base tower (11), a rotating frame (12) and a connecting frame (13); the base tower (11) is grounded; the rotating frame (12) is rotatably arranged on the top of the base tower (11); and the connecting frame (13) is horizontally arranged and respectively connected to the rotating frame (12) and the baking cover (40).

5. The improved ladle drying device according to claim 4 is characterized in that: The rotating frame (12) is a drum-type structure, the connecting frame (13) is an overall symmetrical structure, and the coal gas pipeline (20) and the combustion-supporting gas pipeline (30) respectively pass through the corresponding ends of the rotating frame (12) and the corresponding sides of the connecting frame (13) in sequence.

6. The improved ladle drying device according to claim 5, characterized in that: A hanger (14) is provided on the rotating frame (12), and the hanger (14) is arranged away from the connecting frame (13). A lifting device (15) is provided on the ground, and the lifting device (15) drives the baking cover (40) to rotate through a steel rope, the hanger (14), the rotating frame (12) and the connecting frame (13).

7. The improved ladle drying device according to claim 1, characterized in that: The coal gas pipeline (20) and the combustion-supporting gas pipeline (30) are both provided with a regulating valve and a shut-off valve. The coal gas pipeline (20) is also provided with a stop valve. The combustion-supporting gas pipeline (30) is provided with a cassette-type induced draft fan.

8. The improved ladle drying device according to claim 1, characterized in that: The gas outlets at the ends of the coal gas pipeline (20) and the combustion-supporting gas pipeline (30) are connected to the burner (41); the gas outlet of the burner (41) after ignition is connected to the inside of the baking cover (40); and the gas outlet of the burner (41) before ignition is connected to the recovery pipeline (43).

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