Rotary coal-oxygen lance

Abstract

The utility model belongs to coal oxygen lance technical field especially is a kind of rotary coal oxygen lance, including mobile rack, four self-locking universal wheels are fixedly installed at the bottom four corners of mobile rack, screw rod is rotatably installed on mobile rack by bearing seat, one end of screw rod is fixedly connected with speed reducer, screw block is threadedly connected on screw rod, mobile plate is fixedly connected on screw block.The utility model, by self-locking universal wheel and mobile rack cooperation, realize equipment flexible movement and stable fixation, expand operation coverage range;Screw rod, slider and slide rail constitute horizontal adjusting system, the horizontal angle adjustment of combination worm, worm disc and driven motor bring pitch adjustment, so that gun barrel can multidimensional accurate alignment operation area, improve flame melting efficiency, shorten smelting period, reduce energy consumption;The stable connection and protection design of each structure also enhance equipment durability and operation safety, adapt to modern metallurgical efficient production demand.

Description

Technical Field

[0001] This utility model relates to the field of coal oxygen lance technology, specifically a rotary coal oxygen lance. Background Technology

[0002] In metallurgical smelting (especially electric arc furnace steelmaking), the oxy-fuel lance, as a core fluxing device, directly impacts smelting efficiency, energy consumption control, and operational safety due to its operational flexibility and adjustment precision. Traditional oxy-fuel lances often employ fixed installations or simple manual adjustment structures, allowing only oxy-fuel injection into a single area. This makes them unsuitable for the uneven accumulation of scrap steel and the variable distribution of low-temperature zones within the electric arc furnace. Consequently, the flame coverage is limited, resulting in incomplete melting in some areas, prolonging the smelting cycle, and increasing power consumption and production costs.

[0003] Existing oxy-fuel lance adjustment mechanisms have significant drawbacks: horizontal position adjustment relies heavily on manual operation, which is not only labor-intensive but also results in low positioning accuracy and a tendency for injection position deviation; angle adjustment is mostly a single-dimensional design, unable to achieve coordinated fine-tuning of horizontal and pitch angles, making it difficult to accurately target low-temperature zones or key areas of scrap steel accumulation. Furthermore, traditional adjustment structures lack stable guiding and limiting components, making them prone to angle deviation due to equipment vibration during operation, affecting flame effectiveness and even posing safety hazards.

[0004] Furthermore, traditional oxy-fuel lances lack sufficient mobility, making it impossible to quickly adjust their operating position according to the smelting process and adapt to the needs of different furnace types or smelting stages. While some devices possess mobility capabilities, their positioning stability after relocation is poor, and combined with insufficient precision in the adjustment mechanism, this further exacerbates energy waste and inefficiency during the smelting process. These technical limitations restrict the fluxing effect of oxy-fuel lances, making it difficult to meet the high-efficiency, energy-saving, and precise production demands of the modern metallurgical industry. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a rotary oxy-fuel lance, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution: A rotary oxy-fuel lance includes a movable frame. Four self-locking casters are fixedly installed at the four corners of the bottom of the movable frame. A screw is rotatably mounted on the movable frame via bearing seats. A reduction motor is fixedly connected to one end of the screw. A screw block is threaded onto the screw. A movable plate is fixedly connected to the screw block. A servo motor is fixedly connected to the bottom of the movable plate. A worm gear is fixedly connected to the output end of the servo motor via a bearing seat. The worm gear meshes with and rotatably connects to a worm disc. A bracket is fixedly connected to the top of the worm disc. A drive motor is fixedly connected to the side wall of the bracket. A fixed plate is fixedly connected to the output end of the drive motor. A lance barrel is fixedly installed in the fixed plate.

[0007] Furthermore, the geared motor is fixedly mounted on the top of the mobile frame.

[0008] Furthermore, the worm gear is rotatably connected to the housing, and the housing is fixedly installed at the bottom of the movable plate.

[0009] Furthermore, the worm gear and the moving plate are flush and rotatably connected.

[0010] Furthermore, both ends of the fixing plate are rotatably connected to the bracket via bearing seats.

[0011] Furthermore, a slider is fixedly connected to the side wall of the movable plate, and the slider is engaged and slidably connected to the slide rail.

[0012] Furthermore, the slide rail is fixedly mounted on the mobile frame.

[0013] Compared with the prior art, this utility model provides a rotary oxy-fuel lance, which has the following beneficial effects: This invention utilizes self-locking casters in conjunction with a mobile frame to achieve flexible movement and stable fixation of the equipment, expanding the operational coverage area. The screw, slider, and slide rail constitute a horizontal adjustment system, which, combined with the horizontal angle adjustment of the worm gear and worm disk and the pitch adjustment driven by the drive motor, allows the gun barrel to be precisely aligned with the working area in multiple dimensions, improving flame melting efficiency, shortening the smelting cycle, and reducing energy consumption. The stable connection and protective design of each structure also enhances the durability and operational safety of the equipment, adapting to the high-efficiency production needs of modern metallurgy. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model from below; Figure 3 This utility model Figure 1 Schematic diagram of the structure at point A in the middle; Figure 4 This is a top view of the structure of this utility model.

[0015] In the diagram: 1. Moving frame; 2. Self-locking caster wheel; 3. Screw; 4. Gear motor; 5. Screw block; 6. Moving plate; 7. Servo motor; 8. Worm gear; 9. Worm disk; 10. Bracket; 11. Drive motor; 12. Fixing plate; 13. Barrel; 14. Slider; 15. Slide rail; 16. Housing. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0017] like Figure 1-4 As shown in the figure, an embodiment of the present invention provides a rotary oxy-fuel lance, comprising a movable frame 1. Four self-locking casters 2 are fixedly installed at the four corners of the bottom of the movable frame 1. A screw 3 is rotatably mounted on the movable frame 1 via bearing seats. A reduction motor 4 is fixedly connected to one end of the screw 3. A screw block 5 is threadedly connected to the screw 3. A movable plate 6 is fixedly connected to the screw block 5. A servo motor 7 is fixedly connected to the bottom of the movable plate 6. When the reduction motor 4 drives the screw 3 to rotate, the screw block 5 drives the movable plate 6 to move stably and linearly along the slide rail 15, preventing the movable plate 6 from deviating and accurately adjusting the horizontal position of the lance 13 to adapt to the operational needs of different smelting areas.

[0018] The mobile frame 1 can be moved as a whole by the self-locking casters 2. Combined with the local horizontal adjustment of the moving plate 6, the operating coverage of the equipment can be expanded. At the same time, the self-locking function ensures that the position of the equipment is fixed during operation, avoiding shaking that could affect the smelting accuracy. The output end of the servo motor 7 is fixedly connected to a worm gear 8 via a bearing seat. The worm gear 8 is meshed and rotatably connected to a worm disk 9. A bracket 10 is fixedly connected to the top of the worm disk 9. The servo motor 7 drives the worm gear 8 to rotate. Through the meshing transmission between the worm gear 8 and the worm disk 9, the bracket 10 is driven to rotate synchronously with the worm disk 9, thereby realizing the fine adjustment of the horizontal angle of the gun barrel 13.

[0019] The outer shell 16 protects and limits the worm gear 9, preventing external impurities from affecting the transmission. At the same time, the flush engagement design between the worm gear 9 and the moving plate 6 ensures the stability of the bracket 10 during rotation and ensures the precise adjustment of the angle of the gun barrel 13, adapting to the melting requirements of different low-temperature zones in the electric furnace. A drive motor 11 is fixedly connected to the side wall of the bracket 10, and a fixing plate 12 is fixedly connected to the output end of the drive motor 11. A gun barrel 13 is fixedly installed in the fixing plate 12. The drive motor 11 drives the fixing plate 12 to rotate around the bearing seat, thereby driving the gun barrel 13 to achieve pitch angle adjustment. The spray angle of the gun barrel 13 can be adjusted according to the height of the scrap steel accumulation and the smelting progress to enhance the melting and cutting ability of the flame on the scrap steel.

[0020] The bearing seat connection between the fixed plate 12 and the bracket 10 reduces rotational friction, ensures smooth pitch adjustment, and ensures that the barrel 13 is stable in angle during operation, avoiding displacement of the injection position due to vibration, thereby improving smelting efficiency and safety.

[0021] The working principle of this rotary oxy-fuel lance is as follows: The entire equipment can be flexibly moved and fixed by the self-locking casters 2 at the bottom of the movable frame 1 to meet the needs of different working positions; starting the reduction motor 4 can drive the screw 3 to rotate, and the screw block 5 connected to the screw 3 threadedly drives the moving plate 6 to slide linearly along the slide rail 15. The moving plate 6 is engaged with the slide rail 15 through the slider 14 to ensure the stability of movement, thereby adjusting the horizontal position of the lance 13; after the servo motor 7 is started, the worm gear 8 connected to its output end meshes with the worm disk 9 to drive the worm disk 9 to rotate. It is connected to the outer shell 16 and is flush with the moving plate 6, driving the bracket 10 at the top to achieve horizontal angle adjustment; the drive motor 11 on the side wall of the bracket 10 can drive the fixed plate 12 to rotate. The two ends of the fixed plate 12 are connected to the bracket 10 through bearing seats to ensure smooth rotation, thereby driving the lance 13 fixed in the fixed plate 12 to adjust the pitch angle. Finally, through multi-dimensional adjustment, the lance 13 is accurately aligned with the working area, and the smelting and fluxing operation is completed in conjunction with the lance 13's oxy-fuel delivery and rotary combustion functions.

[0022] like Figure 1 As shown, in some embodiments, the geared motor 4 is fixedly mounted on the top of the mobile frame 1; the mobile frame 1 serves as the overall load-bearing frame of the equipment, and its top has a stable supporting foundation, which can provide a solid mounting platform for the geared motor 4 and prevent the installation position from shifting due to vibration during motor operation.

[0023] like Figure 2 As shown, in some embodiments, the worm gear 9 is rotatably connected in the housing 16, and the housing 16 is fixedly installed at the bottom of the moving plate 6; the housing 16 provides a precise rotation constraint space for the worm gear 9, ensuring that the worm gear 9 rotates only along a preset trajectory, and avoiding deviation or shaking when the servo motor 7 drives the worm 8 for transmission.

[0024] like Figure 4As shown, in some embodiments, the worm gear 9 is flush-engaged and rotatably connected to the movable plate 6; this connection method, in conjunction with the protective limit of the worm gear 9 by the outer shell 16, can ensure that the worm gear 9 maintains a stable trajectory when rotating, ensuring that the bracket 10 and the gun barrel 13 can accurately respond to the angle adjustment requirements, adapt to the fluxing operation in different low-temperature zones in the electric furnace, and avoid affecting the flame effect and smelting efficiency due to angle deviation.

[0025] like Figure 2 As shown, in some embodiments, the two ends of the fixed plate 12 are rotatably connected to the bracket 10 through bearing seats; the rolling friction characteristics of the bearing seats can greatly reduce the rotational resistance between the fixed plate 12 and the bracket 10, so that the drive motor 11 can more easily drive the fixed plate 12 and the gun barrel 13 to rotate, ensuring that the pitch angle adjustment is flexible and the response is rapid, and it is convenient to adjust the spray angle of the gun barrel 13 in real time according to the height of the scrap steel accumulation or the smelting progress.

[0026] like Figure 3 As shown, in some embodiments, a slider 14 is fixedly connected to the side wall of the movable plate 6, and the slider 14 is engaged and slidably connected to the slide rail 15. The design of fixing the slider 14 to the side wall of the movable plate 6 and engaging and slidably connecting the slider 14 to the slide rail 15 is the core guiding structure that ensures the accuracy and stability of horizontal movement adjustment.

[0027] like Figure 3 As shown, in some embodiments, the slide rail 15 is fixedly mounted on the mobile frame 1; the design of the slide rail 15 being fixedly mounted on the mobile frame 1 is a key basic support to ensure the stability and accuracy of the horizontal movement of the mobile plate 6.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotary oxy-fuel lance, comprising a movable frame (1), characterized in that: Four self-locking casters (2) are fixedly installed at the four corners of the bottom of the mobile frame (1). A screw (3) is rotatably installed on the mobile frame (1) through a bearing seat. A geared motor (4) is fixedly connected to one end of the screw (3). A screw block (5) is threaded onto the screw (3). A moving plate (6) is fixedly connected to the screw block (5). A servo motor (7) is fixedly connected to the bottom of the moving plate (6). A worm gear (8) is fixedly connected to the output end of the servo motor (7) through a bearing seat. The worm gear (8) is meshed and rotatably connected to a worm disk (9). A bracket (10) is fixedly connected to the top of the worm disk (9). A drive motor (11) is fixedly connected to the side wall of the bracket (10). A fixed plate (12) is fixedly connected to the output end of the drive motor (11). A gun barrel (13) is fixedly installed in the fixed plate (12).

2. A rotary oxy-fuel lance according to claim 1, characterized in that: The geared motor (4) is fixedly installed on the top of the mobile frame (1).

3. A rotary oxygen lance according to claim 1, characterized in that: The worm gear (9) is rotatably connected in the housing (16), which is fixedly installed at the bottom of the movable plate (6).

4. A rotary oxy-fuel lance according to claim 1, characterized in that: The worm gear (9) is flush with and rotatably connected to the movable plate (6).

5. A rotary oxy-fuel lance according to claim 1, characterized in that: The two ends of the fixed plate (12) are rotatably connected to the bracket (10) through bearing seats.

6. A rotary oxy-fuel lance according to claim 1, characterized in that: The side wall of the movable plate (6) is fixedly connected to a slider (14), which is engaged and slidably connected to the slide rail (15).

7. A rotary oxy-fuel lance according to claim 6, characterized in that: The slide rail (15) is fixedly installed on the mobile frame (1).

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