A top charging device for a pressurized converter

Abstract

The application relates to a technical field of pyrometallurgical smelting device, in particular to a positive pressure type converter top feeding device. One end of a discharging pipe of the feeding device is fixedly connected with a feeding box, a plurality of supporting legs are welded on the outer surface of the discharging pipe, the supporting legs are symmetrically distributed and located on the same horizontal plane; a plurality of air inlet holes are symmetrically formed in the pipe wall of the discharging pipe, an air pipe is welded outside the air inlet holes, the other end of the air pipe is fixedly connected with a gas locking device, the gas locking device is a hollow circular ring which is sleeved outside the discharging pipe, an air vent is formed in the outer surface of the gas locking device, the air vent is connected with a compressed air pipe, and the air vent, the gas locking device, the air pipe and the air inlet hole are communicated. The compressed air pipe sequentially sends positive pressure air to the gas locking device and the air pipe and then to the discharging pipe, so that the negative pressure generated by high temperature in the furnace is offset, powder and small block raw materials can smoothly enter, the structure is simple, and pollution and human resource waste can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of pyrometallurgical equipment, specifically to a positive pressure converter top charging device. Background Technology

[0002] In the production of non-ferrous metals, some raw materials are obtained through pyrometallurgical processing in converter furnaces. During the feeding process, the shape and size of the crushed raw materials vary, resulting in a large amount of powder and small lumps. When feeding the raw materials into the furnace through a specific production line, the furnace temperature is higher than the surrounding temperature, creating a negative pressure from bottom to top. This prevents the powder and small lumps from entering the furnace smoothly, causing economic losses and environmental pollution. It is necessary to manually collect the raw materials that have not entered the furnace and re-feed them, resulting in a waste of manpower. Furthermore, workers in the high-temperature furnace may suffer from heatstroke and burns.

[0003] Therefore, there is a need to develop a device that allows powdered and small granular raw materials to smoothly enter the converter kiln. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a positive pressure converter top charging device. The specific solution is as follows:

[0005] A positive-pressure converter top charging device includes a charging pipe, supporting legs, an airlock device, an air pipe, and a charging box. The charging pipe is a cylindrical tube, one end of which is fixedly connected to the charging box. The other end of the charging box is an open square pyramidal funnel shape, with the cross-sectional area of ​​the end of the funnel furthest from the charging pipe being larger than that of the end closest to the charging pipe. Multiple supporting legs are vertically fixed to the outer surface of the charging pipe, symmetrically distributed, and located on the same horizontal plane. Symmetrical openings are formed on the wall of the charging pipe. Multiple air inlets are located between the support leg and the feeding box. An air pipe is welded to the outside of each air inlet. The diameter of the air inlet is the same as the inner diameter of the air pipe. The other end of the air pipe is fixedly connected to an air-locking device. The air-locking device is a hollow ring sleeved around the feed pipe. The air-locking device is located between the air inlets and the feeding box. A vent is opened on the outer surface of the air-locking device. The vent is connected to a compressed air pipe. The vent, air-locking device, air pipe and air inlet are interconnected.

[0006] Furthermore, the air intake is a horseshoe-shaped air intake.

[0007] Furthermore, the diameter of the air inlet is 20-30mm.

[0008] Furthermore, there are 4-5 support legs, which are fixed at a distance of 1500-1800mm from the feeding box.

[0009] Furthermore, there are a total of 6-8 air inlets, fixed at a distance of 1000-1200mm from the feeding box.

[0010] Furthermore, the airlock device is fixed at a distance of 500-600mm from the feeding box.

[0011] Furthermore, a connecting rod is fixed between the airlock device and the feed pipe.

[0012] Furthermore, the fixed connection method is welding.

[0013] This invention allows for convenient placement of the feeding pipe at the furnace inlet via its supporting legs. The airlock device is then connected to a compressed air pipe, which generates a positive pressure from top to bottom. This positive pressure counteracts the negative pressure rising from bottom to top within the furnace, facilitating the smooth entry of powdered and small granular materials. Simultaneously, during the feeding process, the powdered and small granular materials are drawn downwards into the furnace by the positive pressure airflow from the feeding pipe. This device has a simple structure and effectively reduces economic losses, environmental pollution, and waste of human resources. Attached Figure Description

[0014] The embodiments of this utility model will be further described below with reference to the accompanying drawings, wherein:

[0015] Figure 1 A three-dimensional schematic diagram of the present invention is shown.

[0016] Among them, 1-feeding pipe, 2-support leg, 3-air lock device, 4-air pipe, 5-feeding box, 6-connecting rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0018] In one embodiment, a positive pressure converter top charging device is characterized by comprising a charging pipe 1, supporting legs 2, an airlock device 3, an air pipe 4, and a charging box 5. The charging pipe 1 is a cylindrical tube, one end of which is welded to the charging box 5. The other end of the charging box 5 is an open square pyramidal funnel shape, with the cross-sectional area of ​​the end of the funnel furthest from the charging pipe 1 being larger than that of the end closest to the charging pipe 1. Four supporting legs 2 are vertically welded to the outer surface of the charging pipe 1, located 1500mm from the charging box. The supporting legs 2 are cuboids, with the smaller side welded to the charging pipe. The supporting legs 2 are symmetrically distributed and located on the same horizontal plane. Six air inlets are symmetrically opened on the wall of the charging pipe 1, located 1000mm from the charging box. The air inlet is a horseshoe-shaped inlet with a diameter of 20mm, located between the support leg 2 and the feeding box 5. An air pipe 4 is welded to the outside of the air inlet. The wall thickness of the air pipe 4 is 6mm and the inner diameter is 20mm. The diameter of the air inlet is the same as the inner diameter of the air pipe 4. The other end of the air pipe 4 is welded to the air-locking device 3, located 500mm away from the feeding box. The air-locking device 3 is a hollow ring sleeved on the outside of the feeding pipe 1. The longitudinal section of the air-locking device 3 is rectangular. The air-locking device 3 is located between the air inlet and the feeding box 5. A connecting rod 6 is also fixed between the air-locking device 3 and the feeding pipe 1. A vent is opened on the outer surface of the air-locking device 3. The vent is connected to the compressed air pipe. The vent, the air-locking device 3, the air pipe 4 and the air inlet are connected.

[0019] In use, the feeding pipe 1 is inserted deep into the top of the converter, and its supporting legs 2 support it at the top opening of the converter. The charging box 5 is located at the top. Air is blown into the airlock device 3 through the compressed air pipe. The air enters the feeding pipe 1 through the airlock device 3 and the air pipe 4. Because the air pipe 4 has a downward angle, the air and pressure come from top to bottom, which helps to counteract the negative pressure from bottom to top in the furnace, allowing powder and small blocky raw materials to enter smoothly.

[0020] The foregoing description describes some exemplary embodiments of this utility model. It is understood that the above embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. The features in these embodiments can be recombine in a suitable manner, and the resulting solutions are still within the scope of protection claimed by this utility model. Based on the above embodiments, all other embodiments obtained by those skilled in the art without inventive effort, that is, all modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by this utility model.

Claims

1. A positive pressure converter top charging device, characterized in that, The device includes a feeding pipe (1), support legs (2), an airlock device (3), an air pipe (4), and a feeding box (5). The feeding pipe (1) is a cylindrical tube, one end of which is fixedly connected to the feeding box (5). The other end of the feeding box (5) is an open square pyramidal funnel shape, with the cross-sectional area of ​​the end of the funnel away from the feeding pipe (1) being larger than that of the end closer to the feeding pipe (1). Multiple support legs (2) are vertically fixed to the outer surface of the feeding pipe (1), and the multiple support legs (2) are symmetrically distributed and located on the same horizontal plane. Multiple air inlets are symmetrically opened on the wall of the feeding pipe (1). The air inlet is located between the support leg (2) and the feeding box (5). An air pipe (4) is welded to the outside of the air inlet. The diameter of the air inlet is the same as the inner diameter of the air pipe (4). The other end of the air pipe (4) is fixedly connected to the air-locking device (3). The air-locking device (3) is a hollow ring sleeved outside the feed pipe (1). The air-locking device (3) is located between the air inlet and the feeding box (5). A ventilation hole is opened on the outer surface of the air-locking device (3). The ventilation hole is connected to the compressed air pipe. The ventilation hole, the air-locking device (3), the air pipe (4) and the air inlet are connected.

2. The positive pressure converter top charging device according to claim 1, characterized in that, The air intake is a horseshoe-shaped air intake.

3. The positive pressure converter top charging device according to claim 1, characterized in that, The diameter of the air inlet is 20-30mm.

4. The positive pressure converter top charging device according to claim 1, characterized in that, There are 4-5 support legs (2), which are fixed at a distance of 1500-1800mm from the feeding box (5).

5. A positive pressure converter top charging device according to claim 4, characterized in that, There are a total of 6-8 air inlets, which are fixed at a distance of 1000-1200mm from the feeding box (5).

6. The positive pressure converter top charging device according to claim 5, characterized in that, The airlock device (3) is fixed at a distance of 500-600mm from the feeding box (5).

7. The positive pressure converter top charging device according to claim 1, characterized in that, A connecting rod (6) is also fixed between the airlock device (3) and the feed pipe (1).

8. A positive pressure converter top charging device according to any one of claims 1-7, characterized in that, The fixed connection method is welding.

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