Slagging-off device of copper alloy smelting furnace

Abstract

The invention relates to a slagging-off device for a copper alloy smelting furnace, a slagging-off spoon is controlled through a rotating and lifting device, the slagging-off device is provided with an air blowing pipeline, and the air blowing pipeline is integrated in a box body and specifically comprises an air tank, an air blowing pipe and a purging pipe. The purging pipe is communicated with the atmosphere and the air blowing pipe and sequentially comprises a purging valve, a single chip microcomputer, a vacuum pump, an air storage cylinder inlet, an air storage cylinder, an air storage cylinder outlet and an exhaust valve along an atmosphere circulation path. Nitrogen gas is continuously conveyed to the surface of the melt through the gas blowing pipeline, the oxygen concentration at the furnace opening can be reduced, slag generation is reduced, melt splashing is avoided, potential safety hazards can be reduced, and repeated slag generation is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of copper material processing, and in particular relates to a slag removal device for a copper alloy smelting furnace. Background Art

[0002] During the copper alloy smelting process, it is necessary to clean the slag on the surface of the copper liquid in the copper alloy smelting furnace in time to avoid affecting the purity of the copper liquid.

[0003] In production practice, workers usually use a slag scoop to remove slag. However, copper alloy melt is very easy to react with oxygen, which will continuously form slag on the melt surface during the slag removal process, resulting in excessive repetition of the slag removal process. In addition, when removing slag, workers need to stand near the furnace mouth to operate. When the melt level is low, workers have to stay away from the furnace mouth, which increases safety hazards. Summary of the invention

[0004] The present application provides a slag removal device for a copper alloy smelting furnace, which solves the copper liquid exposure and safety issues that occur when workers use a slag removal spoon to perform slag removal operations.

[0005] The technical solution of this application is as follows: A slag removal device for a copper alloy smelting furnace comprises a base and a lifting mechanism fixed to the base, wherein the upper end of the lifting mechanism supports a rotating mechanism, wherein the rotating mechanism extends a telescopic mechanism toward the smelting furnace, wherein the telescopic mechanism is provided with a mechanical arm toward the furnace opening, wherein the mechanical arm clamps a slag removal spoon, wherein the telescopic mechanism comprises a fixed rod and a forward extension rod, wherein both the fixed rod and the forward extension rod are hollow structures, and the forward extension rod is provided with an air hole toward the furnace opening, wherein the air hole is connected to an air blowing pipeline, wherein the air blowing pipeline comprises: A gas tank for storing nitrogen gas; An air blowing pipe, which is connected with the air hole and the air tank, and the air blowing pipe has a ball valve capable of adjusting the gas flux; A purge pipe, which connects the atmosphere with the purge pipe, and includes a purge valve, a single chip microcomputer, a vacuum pump, an air reservoir inlet, an air reservoir, an air reservoir outlet, and an exhaust valve in sequence along the atmosphere flow path; the single chip microcomputer is used to control the purge valve, the vacuum pump, the air reservoir inlet, the air reservoir, the air reservoir outlet, and the exhaust valve; A box body is provided, wherein the gas tank, the air blowing pipe and the purge pipe are integrated into the box body.

[0006] Furthermore, the air hole is provided with a guide tube toward the skimmer scoop.

[0007] Furthermore, a trumpet-shaped nozzle is provided at the front end of the guide tube, and the diameter of the guide tube is smaller than the diameter of the air hole.

[0008] Furthermore, the rotation range of the rotating structure is 270°.

[0009] Due to the adoption of the above technical solution, the beneficial effects of this application are as follows: 1. The present application realizes mechanized operation of the slag skimmer, which enables workers to operate the slag skimmer away from the furnace mouth, reducing safety hazards and avoiding damage to workers' health caused by high temperature. When the melt level is low, workers do not need to get close to the melt.

[0010] 2. The present application has an air blowing pipeline, which continuously delivers nitrogen gas to the surface of the melt. On the one hand, it can reduce the oxygen concentration at the furnace mouth and thus reduce the risk of copper liquid exposure, thereby stabilizing the composition and reducing slag, thereby reducing the workload of workers; on the other hand, the pressure during blowing can reduce melt splashing and avoid burns to workers.

[0011] 3. In this application, the blowing pipe in the blowing pipeline can provide nitrogen, and the purge pipe has two functions. The first function is to discharge the dust in the blowing pipeline when working independently, and the second function is to store air in the gas storage cylinder, and use different gases (air, nitrogen or a mixture of air and nitrogen) to supply gas to the slag scoop. There are more slag ash in the factory workshop, especially at the furnace mouth, and the dust in the small space environment has safety hazards. Therefore, the dust in the pipeline is purged before the device is started, which can reduce the safety hazards. In actual production, when the iron element in the copper liquid is too high, it is necessary to reduce the iron content by contact with air. Therefore, the purge pipe can be opened in time during the iron removal process, so that the exposed copper liquid is exposed to air to reduce the iron content, and then deoxygenation is carried out. Therefore, a purge pipeline is added to the blowing pipeline, and the purge pipeline has a gas storage cylinder that can store air, thereby adjusting the gas composition and pressurizing the blowing pipe during the iron removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0013] Figure 1 A schematic diagram of the structure of a slag removal device for a copper alloy smelting furnace provided in this application; Figure 2 is a schematic diagram of the box described in this application; Figure 3 This is a schematic diagram of the structure of the guide tube described in this application; In the attached picture: 1. Base; 2. Lifting mechanism; 3. Rotating mechanism; 4. Telescopic mechanism; 4-1. Fixed rod; 4-2. Forward rod; 4-3. Air hole; 5. Mechanical arm; 6. Slag scoop; 7. Box body; 8. Gas tank; 9. Air blow pipe; 9-1. Ball valve; 10. Purge pipe; 10-1. Purge valve; 10-2. Single chip microcomputer; 10-3. Vacuum pump; 10-4. Air cylinder inlet; 10-5. Air cylinder; 10-6. Air cylinder outlet; 10-7. Exhaust valve; 11. Guide pipe; 12. Nozzle. DETAILED DESCRIPTION

[0014] Based on the background technology, in the existing production of copper alloy casting, calcined charcoal is mainly used for covering, one is to isolate the air and prevent oxygen and moisture in the air from introducing oxygen atoms into the copper liquid; the other is that carbon reacts with oxygen in the copper liquid to absorb oxygen. In a high temperature environment, carbon dioxide will also react with carbon, which will affect the oxygen absorption of calcined charcoal. If air is mixed with copper liquid air, there is also a risk of introducing oxygen and moisture. The present application provides a slag removal device for a copper alloy smelting furnace, including a base 1 and a lifting mechanism 2 fixed to the base 1, the upper end of the lifting mechanism 2 supports a rotating mechanism 3, the rotating mechanism 3 extends a telescopic mechanism 4 toward the smelting furnace, the telescopic mechanism 4 is provided with a mechanical arm 5 toward the furnace mouth, the mechanical arm 5 clamps a slag removal spoon 6, the telescopic mechanism 4 includes a fixed rod 4-1 and a forward rod 4-2, the fixed rod 4-1 and the forward rod 4-2 are both cavity structures and the forward rod 4-2 is provided with an air hole 4-3 facing the furnace mouth, the air hole 4-3 is connected to a blow pipe 9, and the blow pipe 9 includes: The gas tank 8 is used to store nitrogen gas.

[0015] The air blowing pipe 9 is connected with the air hole 4-3 and the air tank 8, and the air blowing pipe 9 has a ball valve 9-1 which can adjust the gas flux.

[0016] The purge pipe 10 connects the atmosphere with the air blow pipe 9, and includes a purge valve 10-1, a single-chip computer 10-2, a vacuum pump 10-3, an air cylinder inlet 10-4, an air cylinder 10-5, an air cylinder outlet 10-6, and an exhaust valve 10-7 along the atmospheric flow path; the single-chip computer 10-2 is used to control the purge valve 10-1, the vacuum pump 10-3, the air cylinder inlet 10-4, the air cylinder 10-5, the air cylinder outlet 10-6 and the exhaust valve 10-7.

[0017] The box body 7 integrates the gas tank 8, the air blowing pipe 9 and the purge pipe 10.

[0018] See attached Figure 1The lifting mechanism 2, the rotating mechanism 3, the telescopic mechanism 4 and the mechanical arm 5 can all be realized by combining the existing technologies. It can be hydraulic and driven by a motor, and the corresponding control technology also belongs to the existing technology. It should be noted that in the specific implementation, the slag scoop 6 needs to be modified, and the traditional long-handled slag scoop 6 is transformed into a short-handled slag scoop 6, and its length matches the depth of the furnace mouth. The mechanical arm 5 can imitate the arm movements of a person to dig out the slag.

[0019] See attached Figure 2 and attached Figure 3 In the present application, the box 7 integrates the gas tank 8, the air blowing pipe 9, and the purge pipe 10 and is placed on the base 1. The gas supply is realized by introducing the air blowing pipe 9 and the purge pipe 10 into the telescopic mechanism 4 and connecting the air hole 4-3.

[0020] As a preferred embodiment of the present application, the air hole 4-3 is provided with a guide tube 11 facing the slag scoop 6. The guide tube 11 can be closer to the melt surface, which helps to form a gas barrier near the melt surface, reduce the oxygen concentration and thus reduce the risk of copper liquid exposure.

[0021] In a specific embodiment of the above-mentioned embodiment, a trumpet-shaped nozzle 12 is provided at the front end of the guide tube 11, and the diameter of the guide tube 11 is smaller than the diameter of the air hole 4-3. It should be noted that the guide tube 11 is progressively connected to the air hole 4-3, that is, the air hole 4-3 is connected to the guide tube 11 after forming a constriction outward. The smaller diameter of the guide tube 11 than the air hole 4-3 helps to increase the ejection pressure of the gas, improve the ejection range, and increase the coverage of the gas barrier. The trumpet-shaped nozzle 12 helps to diffuse the gas.

[0022] The rotation range of the rotating structure is 270°, and limiting the rotation range of the rotating structure can be achieved by a limit block. Limiting the rotation range can prevent the slag scoop 6 from rotating to the area outside the furnace mouth, thereby preventing the operator from being scalded.

[0023] In the present application, the blowing pipe 9 in the blowing pipe 9 can provide nitrogen, and the purge pipe 10 has two functions. The first function is to discharge the dust in the blowing pipe 9 when working independently, and the second function is to store air in the gas storage cylinder 10-5, so that different gases can supply gas to the slag scoop 6. There are more slag ash in the factory workshop, especially at the furnace mouth, and the dust in the small space environment has a safety hazard. Therefore, the dust in the pipeline is purged before the device is started, which can reduce the safety hazard. In actual production, when the iron element in the copper liquid is too high, it is necessary to reduce the content of the iron element by contacting with air. Therefore, the purge pipe 10 can be opened in time during the deironing process, so that the exposed copper liquid is exposed to air to reduce the iron content, and then deoxygenation is performed. Therefore, a purge pipe 10 is added to the blowing pipe 9, and the purge pipe 10 has a gas storage cylinder 10-5 that can store air, thereby adjusting the gas composition and pressurizing the blowing pipe 9 during the deironing process.

[0024] In this application, the steps of using the slag removal device are as follows: Step 1: Control the rotating mechanism 3 to rotate to the limit position, the single-chip microcomputer receives the control signal, controls the purge valve 10-1 to open, the vacuum pump 10-3 to open, the air reservoir inlet 10-4 to open, the air reservoir outlet 10-6 to open, and the exhaust valve 10-7 to open, so that the air enters the air blowing pipe 9 through the vacuum pump 10-3 and the exhaust valve 10-7; Step 2: The single chip microcomputer receives the control signal, closes the gas storage cylinder outlet 10-6 and the exhaust valve 10-7; the gas storage cylinder 10-5 starts to store gas; Step 3: Close the gas reservoir inlet 10-4 and the vacuum pump 10-3, and open the gas tank 8; Step 4: Adjust the lifting mechanism 2, the rotating mechanism 3 and the telescopic mechanism 4 to move the mechanical arm 5 above the slag, and operate the mechanical arm 5 to control the slag scoop 6 to perform the slag removal operation. When the iron removal operation is required: open the gas storage cylinder outlet 10-6 and the exhaust valve 10-7.

[0025] During specific operation, the gas cylinder 10-5 can be equipped with a pressure gauge to monitor the pressure of the gas cylinder 10-5, monitor the capacity of the gas cylinder 10-5 and control the purging intensity according to the pressure value, and when the pressure needs to be increased, close the gas cylinder outlet 10-6, open the vacuum pump 10-3 and the gas cylinder inlet 10-4 to increase the pressure. In addition, it should be noted that the gas tank 8 itself can be a pressure gas tank 8.

[0026] Anything not described in this application can be achieved by adopting or drawing on existing technologies. The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A slag removal device for a copper alloy smelting furnace, comprising a base and a lifting mechanism fixed to the base, wherein the upper end of the lifting mechanism supports a rotating mechanism, the rotating mechanism extends a telescopic mechanism toward the smelting furnace, the telescopic mechanism is provided with a mechanical arm toward the furnace mouth, the mechanical arm clamps a slag removal spoon, and is characterized in that: The telescopic mechanism comprises a fixed rod and a forward extension rod, both of which are hollow structures, and the forward extension rod is provided with an air hole facing the furnace opening, the air hole is connected to an air blowing pipeline, and the air blowing pipeline comprises: A gas tank for storing nitrogen gas; An air blowing pipe, which is connected with the air hole and the air tank, and the air blowing pipe has a ball valve capable of adjusting the gas flux; A purge pipe, which connects the atmosphere with the purge pipe, and includes a purge valve, a single chip microcomputer, a vacuum pump, an air reservoir inlet, an air reservoir, an air reservoir outlet, and an exhaust valve in sequence along the atmosphere flow path; the single chip microcomputer is used to control the purge valve, the vacuum pump, the air reservoir inlet, the air reservoir, the air reservoir outlet, and the exhaust valve; A box body is provided, wherein the gas tank, the air blowing pipe and the purge pipe are integrated into the box body.

2. A slag removal device for a copper alloy smelting furnace according to claim 1, characterized in that: The air hole is provided with a guide pipe toward the skimmer scoop.

3. A slag removal device for a copper alloy smelting furnace according to claim 2, characterized in that: A trumpet-shaped nozzle is provided at the front end of the guide tube, and the diameter of the guide tube is smaller than the diameter of the air hole.

4. The slag removal device for a copper alloy smelting furnace according to claim 1, characterized in that: The rotation range of the rotating structure is 270°.

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