Efficient alloy baking device

Abstract

The utility model relates to the field of steel smelting equipment, in particular to an efficient alloy baking device which comprises a shell, a feeding port is formed in the upper end of the shell, a smoke exhaust mechanism is arranged above the feeding port, a discharging valve is arranged at the lower end of the shell, a plurality of nozzles and a plurality of air inlet pipes are arranged on the inner wall of the shell, and the nozzles are all connected with gas pipes. The gas inlet pipes are connected with combustion-supporting gas pipes, a tungsten alloy mesh cylinder is vertically arranged in the shell, and two turnover baffles are rotationally arranged below the tungsten alloy mesh cylinder. A certain distance is kept between the alloy and the nozzle, so that the conditions that the nozzle is blocked and the alloy is heated unevenly due to the fact that alloy materials make contact with the nozzle are avoided, moisture in the alloy can be reduced, the hydrogen content of molten steel can be reduced, the subsurface bubble defect and the hydrogen embrittlement phenomenon of steel billets are avoided, and the steel quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of steel smelting equipment, in particular to a high-efficiency alloy baking device. Background Art

[0002] In the field of steelmaking, in order to improve the performance of steel, a certain proportion of alloy needs to be added to the molten steel during the smelting stage of steel. The amount of alloy added varies with the type of steel being smelted, ranging from several hundred kilograms or even more. If the alloy at room temperature is directly added, it will affect the temperature of the molten steel, causing the temperature of the molten steel to rise. In order to ensure that the temperature of the molten steel is not affected, the alloy needs to be heated and baked before adding. The equipment used in baking the alloy is an alloy baking device, and its working principle is to place the alloy in a container, use a nozzle to spray flames, and use combustible gas to bake the alloy. In this baking method, the nozzle is in direct contact with the alloy material, which is prone to blocking the nozzle, resulting in uneven alloy baking and more water in the alloy. When an alloy with a high water content is put into the molten steel, it is easy for the steel billet to have subcutaneous bubble defects and hydrogen embrittlement. Therefore, it is particularly necessary to develop an alloy baking device that avoids the nozzle from being blocked and bakes the alloy evenly. Summary of the invention

[0003] The utility model aims to provide a high-efficiency alloy baking device, which can prevent the nozzle from being blocked and has the function of uniformly baking the alloy.

[0004] The technical solutions adopted are as follows:

[0005] A high-efficiency alloy baking device comprises a shell, wherein a feed port is arranged at the upper end of the shell, a smoke exhaust mechanism is arranged above the feed port, a discharge valve is arranged at the lower end of the shell, a plurality of nozzles and a plurality of air inlet pipes are arranged on the inner wall of the shell, the nozzles are all connected to the fuel gas pipe, the air inlet pipes are all connected to the fuel gas pipe, a tungsten alloy mesh cylinder is vertically arranged in the shell, and two folding baffles are rotatably arranged below the tungsten alloy mesh cylinder.

[0006] Preferably, the folding baffles are all connected to a rotating shaft, one end of which extends to the outside of the shell and is connected to a rotating mechanism.

[0007] Preferably, the rotating mechanism comprises a worm gear reducer and a motor, and the output shaft and input shaft of the worm gear reducer are connected to the rotating shaft and the motor respectively.

[0008] Preferably, the smoke exhaust mechanism comprises a smoke collecting hood, an upper end of the smoke collecting hood is connected to an induced draft duct assembly, and the induced draft duct assembly is connected to an induced draft fan.

[0009] Preferably, the air duct assembly includes a hard tube and a high temperature resistant hose, and a lifting mechanism is provided on the outer side of the shell, and the lifting mechanism is connected to the smoke collecting hood.

[0010] Preferably, a valve is provided at the upper end of the smoke collecting hood.

[0011] Preferably, a discharge funnel is provided below the discharge valve, and a material chute is connected to the lower end of the discharge funnel.

[0012] Preferably, the gas pipes are provided with blind plate valves, pressure transmission devices, pneumatic quick-cut valves and electric regulating valves.

[0013] Compared with the prior art, the beneficial effects are:

[0014] 1. The utility model utilizes a tungsten alloy mesh cylinder to concentrate the alloy material in the tungsten alloy mesh cylinder and maintains a certain distance from the nozzle, thereby avoiding the situation where the alloy material contacts the nozzle, causing the nozzle to be blocked and the alloy to be heated unevenly.

[0015] 2. The utility model utilizes a lifting mechanism to control the lifting of the smoke hood. When dust extraction is performed, the smoke hood is controlled to descend and contact the feed port, thereby achieving the closure of the feed port and preventing the smoke containing dust from escaping between the feed port and the smoke hood and floating in the workshop to pollute the workshop environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a high-efficiency alloy baking device of the utility model.

[0017] Figure 2 yes Figure 1 The structural diagram at A in the middle,

[0018] In the figure: 1. Shell, 2. Feed inlet, 3. Fume hood, 4. Hard pipe, 5. High temperature resistant hose, 6. Lifting mechanism, 7. Valve, 8. Discharge valve, 9. Feeding hopper, 10. Sliding pipe, 11. Nozzle, 12. Inlet pipe, 13. Combustion-supporting pipe, 14. Blind valve, 15. Pressure transmission, 16. Pneumatic quick-cut valve, 17. Electric regulating valve, 18. Tungsten alloy mesh tube, 19. Folding baffle, 20. Gas pipe. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with specific embodiments. Figure 1 to Figure 2 As shown:

[0020] Embodiment 1: An efficient alloy baking device comprises a shell 1, wherein a feed port 2 is arranged at the upper end of the shell 1, and the feed port 2 is in a truncated cone shape. A smoke exhaust mechanism is arranged above the feed port 2, and the smoke exhaust mechanism collects and transports smoke generated during the alloy baking process. A discharge valve 8 is arranged at the lower end of the shell 1, and the discharge valve 8 is used to discharge the baked alloy.

[0021] The inner wall of the shell 1 is provided with a plurality of nozzles 11 and a plurality of air inlet pipes 12. The nozzles 11 are all connected with a gas pipe 20. The gas pipe 20 supplies combustible gas to the nozzles 11, which is converted into a high-temperature flame through the nozzles 11 to heat the alloy inside the shell 1. The air inlet pipes 12 are all connected with a combustion-supporting gas pipe 13. The combustion-supporting gas enters the shell 1 through the air inlet pipe 12 to increase the oxygen content in the shell 1. A tungsten alloy mesh tube 18 is vertically arranged in the shell 1. The upper and lower ends of the tungsten alloy mesh tube 18 correspond to the feed port 2 and the discharge valve 8 up and down. The tungsten alloy mesh tube 18 has the characteristic of high temperature resistance.

[0022] Two folding baffles 19 are rotatably provided below the tungsten alloy mesh cylinder 18. The lower end of the tungsten alloy mesh cylinder 18 is closed and opened by rotating the two folding baffles 19. When the alloy is baked, the alloy is put into the tungsten alloy mesh cylinder 18 through the feed port 2, and the alloy is baked by the high-temperature flame sprayed from the nozzle 11. The alloy and the nozzle 11 are kept at a certain distance, so as to avoid the contact between the alloy material and the nozzle 11, resulting in the blocking of the nozzle 11 and uneven heating of the alloy.

[0023] Embodiment 2: A high-efficiency alloy baking device comprises a shell 1, a feed port 2 is arranged at the upper end of the shell 1, the feed port 2 is in a truncated cone shape, a smoke exhaust mechanism is arranged above the feed port 2, the smoke exhaust mechanism collects and transports smoke generated during the alloy baking process, the smoke exhaust mechanism comprises a smoke hood 3, an air duct assembly is connected to the upper end of the smoke hood 3,

[0024] The induced draft duct assembly is connected to an induced draft fan, and the induced draft duct assembly includes a hard tube 4 and a high temperature resistant hose 5. A lifting mechanism 6 is arranged on the outer side of the shell 1, and the lifting mechanism 6 is connected to the smoke collecting hood 3, and the smoke collecting hood 3 is controlled to descend and contact with the feed port 2, so as to achieve the closure of the feed port 2, and prevent the smoke containing dust from escaping from between the feed port 2 and the smoke collecting hood 3 and floating in the workshop to pollute the workshop environment. A valve 7 is arranged at the upper end of the smoke collecting hood 3, and a discharge valve 8 is arranged at the lower end of the shell 1. The discharge valve 8 is used to discharge the baked alloy. A discharge funnel 9 is arranged below the discharge valve 8, and a chute 10 is connected to the lower end of the discharge funnel 9.

[0025] The inner wall of the shell 1 is provided with a plurality of nozzles 11 and a plurality of air inlet pipes 12. The nozzles 11 are all connected with a gas pipe 20. The gas pipe 20 supplies combustible gas to the nozzles 11, which is converted into a high-temperature flame through the nozzles 11 to heat the alloy inside the shell 1. The gas pipe 20 is provided with a blind plate valve 14, a pressure transmission device 15, a pneumatic quick-cut valve 16 and an electric regulating valve 17 to improve the safety of gas transportation.

[0026] The air inlet pipe 12 is connected to the combustion-supporting gas pipe 13. The combustion-supporting gas enters the shell 1 through the air inlet pipe 12 to increase the oxygen content in the shell 1. A tungsten alloy mesh tube 18 is vertically arranged in the shell 1. The upper and lower ends of the tungsten alloy mesh tube 18 correspond to the feed port 2 and the discharge valve 8. The tungsten alloy mesh tube 18 has the characteristic of high temperature resistance.

[0027] Two folding baffles 19 are rotatably provided below the tungsten alloy mesh tube 18. The lower end of the tungsten alloy mesh tube 18 can be closed and opened by rotating the two folding baffles 19. The folding baffles 19 are connected to a rotating shaft, one end of which extends to the outside of the shell 1 and is connected to a rotating mechanism. The rotating mechanism includes a worm gear reducer and a motor. The output shaft and input shaft of the worm gear reducer are respectively connected to the rotating shaft and the motor.

[0028] The specific working process is as follows: before alloy baking, control the two folding baffles 19 to rotate to a horizontal state to block the lower end of the tungsten alloy mesh tube 18, close the discharge valve 8, use the gas pipe 20 to supply combustible gas to the nozzle 11, and ignite the nozzle 11, and transport the combustion-supporting gas to the shell 1 through the air inlet pipe 12, and put the alloy into the tungsten alloy mesh tube 18 from the feed port 2. After the feeding is completed, control the smoke hood 3 to descend and contact the feed port 2, so as to achieve the closure of the feed port 2, start the smoke exhaust mechanism, and use the smoke exhaust mechanism to exhaust the smoke generated by high-temperature baking. After the alloy baking is completed, open the discharge valve 8, control the two folding baffles 19 to rotate to a vertical state, and discharge the baked alloy from the shell 1 and enter the discharge funnel 9 to be discharged along the chute 10.

[0029] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A high-efficiency alloy baking device, characterized in that: The invention comprises a shell (1), wherein the upper end of the shell (1) is provided with a feed port (2), a smoke exhaust mechanism is provided above the feed port (2), a discharge valve (8) is provided at the lower end of the shell (1), a plurality of nozzles (11) and a plurality of air inlet pipes (12) are provided on the inner wall of the shell (1), the nozzles (11) are all connected to a fuel gas pipe (20), the air inlet pipes (12) are all connected to a fuel gas pipe (13), a tungsten alloy mesh cylinder (18) is vertically provided in the shell (1), and two folding baffles (19) are rotatably provided below the tungsten alloy mesh cylinder (18).

2. A high-efficiency alloy baking device as claimed in claim 1, characterized in that: The folding baffles (19) are all connected to a rotating shaft, one end of which extends to the outside of the shell (1) and is connected to a rotating mechanism.

3. A high-efficiency alloy baking device as claimed in claim 2, characterized in that: The rotating mechanism comprises a worm gear reducer and a motor, wherein the output shaft and the input shaft of the worm gear reducer are connected to the rotating shaft and the motor respectively.

4. The high-efficiency alloy baking device according to claim 1, characterized in that: The smoke exhaust mechanism comprises a smoke collecting hood (3), the upper end of the smoke collecting hood (3) is connected to an induced draft duct assembly, and the induced draft duct assembly is connected to an induced draft fan.

5. A high-efficiency alloy baking device as claimed in claim 4, characterized in that: The air duct assembly comprises a hard tube (4) and a high temperature resistant hose (5). A lifting mechanism (6) is provided on the outside of the shell (1), and the lifting mechanism (6) is connected to the smoke collecting hood (3).

6. A high-efficiency alloy baking device as claimed in claim 4, characterized in that: A valve (7) is provided at the upper end of the smoke collecting hood (3).

7. The high-efficiency alloy baking device according to claim 1, characterized in that: A material discharge funnel (9) is arranged below the discharge valve (8), and a material chute (10) is connected to the lower end of the material discharge funnel (9).

8. The high-efficiency alloy baking device according to claim 1, characterized in that: The gas pipe (20) is provided with a blind plate valve (14), a pressure transmission device (15), a pneumatic quick-cut valve (16) and an electric regulating valve (17).

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