Online position adjusting device and method for spray gun at top of smelting furnace

Abstract

The invention relates to the field of metal smelting, in particular to a smelting furnace top spray gun online position adjusting device and method.The online position adjusting device comprises a furnace body system, a top spray gun system, a lifting system, a sealing system and a static and dynamic connecting system, the top of the furnace body system is a furnace body top plate, and a gun inlet is formed in the furnace body top plate; the top spray gun system comprises a top spray gun; the lifting system is arranged on the furnace body system; the sealing system comprises a sealing chamber shell and further comprises a sealing chamber defined by the sealing chamber shell, the outer wall of the top spray gun and the top plate of the furnace body, a sealing gas inlet is formed in the sealing chamber shell, and a gas inlet gap is formed between the outer wall of the top spray gun and the gun inlet. According to the online position adjusting device for the top spray gun of the smelting furnace, online position adjustment of the top spray gun is achieved, and conditions are created for fine production, economic benefit improvement and cost reduction. And meanwhile, great convenience is provided for disassembly and assembly of the top spray gun during maintenance.

Description

Technical Field

[0001] This invention relates to the field of metal smelting, specifically to an online adjustment device and method for the top spray gun of a smelting furnace. Background Technology

[0002] When a metallurgical smelting furnace is equipped with a top spray lance, it is generally desirable to be able to adjust the nozzle height of the top spray lance online during production, as the nozzle height is related to improving production efficiency. However, to date, only offline adjustment is possible. No technical method or equipment has been found that allows for online adjustment of the nozzle height during production. Offline adjustment requires production downtime, impacting operational efficiency. Moreover, the adjustment process involves a significant amount of manual labor, is conducted in harsh environments, is time-consuming and labor-intensive, and does not allow for stepless adjustment. The purpose of this invention is to solve this problem. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an online adjustment device and method for the top spray gun of a smelting furnace, specifically employing the following technical means: An online adjustment device for the top spray gun of a smelting furnace includes a furnace body system, a top spray gun system, a lifting system, a sealing system, and a static and dynamic connection system; The furnace body system refers to various smelting furnaces with lance inlets at the top and requiring a top spray lance system with adjustable lance height. The top of the furnace body system is the furnace top plate, and the furnace top plate is provided with lance inlets. The top spray lance system refers to various top spray lance devices capable of injecting required gaseous media and / or solid materials into various smelting furnaces. The top spray lance system includes a top spray lance, which is provided with a gaseous media channel and / or a solid material channel; preferably, the top spray lance system also includes a nozzle, a flow guiding device, and a cooling component.

[0004] The lifting system is mounted above the furnace body system, and the height space between the lifting system and the furnace body system can accommodate the top spray gun system. The lifting system is connected to the top spray gun system.

[0005] The sealing system is located around the edge of the inlet at the top of the furnace system. It includes a sealing chamber shell connected to the upper side of the furnace top plate. The top of the sealing chamber shell has a top spray gun channel. The upper end of the top spray gun is connected to the lifting system, and the lower end extends into the furnace system through the top spray gun channel and the inlet. The sealing system also includes a sealing chamber formed by the sealing chamber shell, the outer wall of the top spray gun, and the furnace top plate. The sealing chamber shell has a sealing gas inlet, which can be nitrogen or carbon dioxide. There is an inlet gap between the outer wall of the top spray gun and the inlet. The static and dynamic connection system includes a gas medium conveying hose and / or a solid material conveying hose. The two ends of the gas medium conveying hose are connected to the top spray gun system and the gas medium supply pipeline, respectively. The two ends of the solid material conveying hose are connected to the top spray gun system and the solid material supply pipeline, respectively.

[0006] Furthermore, within the sealing chamber of the sealing device, a suitable gap is left at the annular seam between the sealing chamber shell and the outer wall of the top spray gun, and an annular upper air bladder is provided. That is, an upper annular seam is formed between the outer wall of the top spray gun and the top spray gun channel, and an annular upper air bladder is provided at the upper annular seam. Similarly, a lower air bladder is provided at the annular seam between the furnace top plate and the outer wall of the top spray gun. That is, a lower annular seam is formed between the outer wall of the top spray gun and the inlet, and an annular lower air bladder is provided at the lower annular seam. The upper air bladder is fixed to the top inner side of the sealing chamber shell, and the lower air bladder is fixed to the furnace top plate. Both the upper and lower air bladders are provided with an inflation port and an exhaust port. The inflation port is connected to a controllable gas source through a gas supply pipe, and the exhaust port is connected to an exhaust pipe. The gas source can be nitrogen or carbon dioxide.

[0007] Specifically, the controllable air source can be pressure-controlled or flow-controlled. During operation, the upper and lower airbags remain inflated, and their volume can be adjusted using the controllable air source. The air supply and exhaust pipes pass through the sealed chamber shell, and at the point of passage, they are sealed to the sealed chamber shell.

[0008] Furthermore, the top spray gun is subjected to the impact force caused by the spray during operation. To prevent it from shaking, a gun-fixing system can be installed to hold the top spray gun tightly. The fixing method can be to apply force at three heights along the axis of the top spray gun, with the force application points spaced at equal intervals, preferably within the range of 0.5~1.5m. Fixed gun-fixing wheels are set at the upper and lower points to hold the gun without affecting the vertical movement of the top spray gun. A moving gun-fixing wheel is set at the middle point. The moving wheel can move horizontally, forcing the top spray gun to press against the upper and lower fixed gun-fixing wheels. The horizontal force exerted on the top spray gun is opposite to the reaction force of the two fixed gun-fixing wheels on the top spray gun. As long as the force is large enough, the gun can be held tightly to prevent shaking during operation. Based on this, the online positioning device of the present invention has a gun fixing system provided above the gun inlet of the furnace body system. The gun fixing system is located above the sealing system and includes a gun fixing fixed wheel bracket, a gun fixing moving wheel bracket, a gun fixing cylinder, a gun fixing rope, a gun fixing pulley, a gun fixing counterweight, a gun fixing fixed wheel, and a gun fixing moving wheel.

[0009] The fixed gun wheel bracket is mounted on the frame. At least one fixed gun wheel is mounted on the upper and lower sides of the fixed gun wheel bracket. At the symmetrical center line of the two or two sets of fixed gun wheels, a fixed gun moving wheel bracket is suspended, on which at least one fixed gun moving wheel is mounted. One end of the fixed gun moving wheel bracket is connected to the piston rod of the fixed gun cylinder, and the other end is connected to the fixed gun rope. The fixed gun rope is connected to the fixed gun counterweight via a fixed gun pulley. The top spray gun is located between the fixed gun moving wheel and the fixed gun wheel.

[0010] During operation, the positions of the gun-fixing cylinder and the gun-fixing pulley are fixed. When the top spray gun needs to be moved horizontally and the gun-fixing system needs to be opened, the gun-fixing cylinder is inflated. The pulling force of the gun-fixing cylinder piston rod is greater than the gun-fixing counterweight, and the suspended gun-fixing moving wheel bracket is pulled open to the side of opening (i.e., towards the gun-fixing cylinder), without hindering the horizontal movement and hoisting of the top spray gun. When the top spray gun is in position and needs to be held tightly to prevent shaking during operation, the gun-fixing cylinder is deflated. Under the action of the gun-fixing counterweight, the suspended gun-fixing moving wheel bracket moves horizontally towards the side of holding the top spray gun (i.e., towards the gun-fixing fixed wheel), so that the gun-fixing moving wheel and the gun-fixing fixed wheel together hold the top spray gun tightly, preventing shaking caused by the spraying.

[0011] Furthermore, based on the above, a gun position measurement system is also provided. The gun position measurement system can be a radar positioning device, a sliding drag line positioning device, a scale observation device, or an encoder assembled with the fixed gun wheel.

[0012] Furthermore, the lifting system includes a power unit, a transmission unit, and a detachable connector. The power unit is connected to the detachable connector via the transmission unit, and the transmission unit is connected to the top spray gun via the detachable connector. Through the cooperation of the power unit, transmission unit, and detachable connector, the top spray gun can be inserted into the furnace system from the inlet or lifted out of the furnace system from the inlet, and horizontal movement of the top spray gun can also be achieved. Preferably, the lifting system includes a lifting crane, a lifting rope, and a detachable hook.

[0013] In the smelting furnace production process, the position of the top spray lance has a significant impact on production efficiency. For example, in a direct reduction iron bath smelting furnace for producing molten iron, the top spray lance injects oxygen-enriched hot air into the furnace, which, when combined with combustible gases, provides heat for reduction and melting during the smelting process. If the top spray lance is positioned too high, it will reduce the efficiency of heating the slag-iron layer in the furnace; if it is positioned too low, it will cause a reverse smelting reaction. Both situations will lead to reduced production efficiency and increased costs.

[0014] In order to enable timely online adjustment of the height of the top spray lance system nozzle within the furnace according to changes in production conditions, thereby achieving optimal lance positioning, improving production efficiency, and reducing production costs, this invention also discloses an online positioning method for the top spray lance of a smelting furnace using the aforementioned online positioning device, comprising the following steps: During the operation of the furnace system, a sealing gas pressure higher than that inside the furnace system is continuously supplied to the sealed chamber. This sealing gas overflows into the furnace system through the air inlet gap between the outer wall of the top spray gun and the inlet, preventing furnace gas from escaping. Simultaneously, it overflows out of the furnace through the gap between the outer wall of the top spray gun and the top spray gun channel. The sealing gas can be nitrogen or carbon dioxide, and it is supplied to the sealed chamber through the sealing gas inlet. During inflation, the pressurized gas inside the upper and lower airbags also flows, serving to cool the airbags.

[0015] When it is necessary to adjust the position of the top spray gun during debugging or production operation, the top spray gun is raised or lowered to the predetermined position through the lifting system. Then, the state of the lifting system is kept unchanged to achieve the adjustment of the position of the top spray gun to meet the positioning requirements. Specifically, taking the lifting system including the lifting crane as an example, the lifting crane always suspends the top spray gun in the inlet of the furnace system with an air intake gap between it and the edge of the inlet, rather than fixing the top spray gun to the top plate of the furnace system with connecting parts. Therefore, the structure of this invention allows for adjusting the height of the top spray gun system at any time, including during online production, simply by operating the lifting crane. If the height of the top spray gun nozzle needs to be adjusted during debugging or production operations, the lifting system raises or lowers the top spray gun to the desired position; until the next raising or lowering of the top spray gun, the state of the lifting mechanism remains unchanged, achieving the required height positioning of the top spray gun.

[0016] When installing or maintaining the top spray gun system outside the furnace, the lifting system uses a detachable hook to hook the top spray gun system, lift it and place it into the top inlet of the furnace system, or lift it out of the furnace.

[0017] In order to ensure that the gas medium and / or solid material conveying pipeline connected to the top spray gun system does not restrict the vertical movement of the top spray gun system, the gas medium conveying hose and / or solid material conveying hose of the static-dynamic connection system are used to connect the top spray gun system to the rigid pipeline supplying the gas medium and / or solid material. The spare length and flexible characteristics of the hose allow it to adapt to follow the vertical movement of the top spray gun.

[0018] The above method enables online adjustment of the top spray gun's position, creating conditions for precision production, improved economic efficiency, and reduced costs. It also greatly facilitates the disassembly and assembly of the top spray gun for maintenance.

[0019] Furthermore, as described above, in order to reduce the flow rate of overflow sealing gas and thus lower costs, preferably, the online adjustment device of the present invention is provided with an annular upper airbag and a lower airbag in the sealing chamber. When the upper airbag and the lower airbag are provided, the online adjustment method further includes the following steps: When adjusting the position of the top spray gun during commissioning or production operations, first perform the following operations: By changing the volume of the upper and lower air bladders (for example, by reducing the gas flow rate through a controllable gas source), the upper and lower air bladders can be contracted, exposing the upper and lower annular seams (which can be fully or partially exposed). During this process, the sealing gas in the sealed chamber can overflow into the furnace system through the air inlet gap. If necessary, the supply of sealing gas can also be increased to ensure that the gas in the furnace system does not leak out of the furnace. The purpose of exposing part of the upper and lower circumferential seams is to allow the top spray gun system to move up and down without obstruction and to prevent wear on the upper and lower airbags; After the top spray gun is positioned correctly, perform the following operations: By changing the volume of the upper and lower air bladders (for example, by increasing the gas flow rate through a controllable gas source), the upper circumferential seam is completely sealed, while the lower circumferential seam still has an air inlet gap. This keeps the gas in the sealed chamber overflowing into the furnace system, thus providing cooling protection for the lower air bladder.

[0020] Furthermore, the top spray gun is subjected to the impact force caused by the spray during operation. In order to prevent it from shaking, preferably, the online adjustment device of the present invention is equipped with a gun fixing system. When a gun fixing system is provided, the online adjustment method further includes the following steps: When the top spray gun needs to be moved horizontally during commissioning or production operations, first perform the following operations: Control the inflation of the gun-fixing cylinder so that the pulling force of the piston rod of the gun-fixing cylinder is greater than the weight of the fixed counterweight, so that the gun-fixing wheel bracket moves towards the gun-fixing cylinder, so that the gun-fixing wheel moves away from the outer wall of the top spray gun and releases the clamping state. After the top spray gun is properly leveled, perform the following operations: By controlling the release of air from the gun-fixing cylinder, the gun-fixing moving wheel bracket moves towards the gun-fixing stationary wheel under the action of the fixed counterweight, so that the gun-fixing moving wheel abuts against the outer wall of the top spray gun, and the top spray gun is in a clamped state.

[0021] Furthermore, based on the above, in order to monitor the specific height position of the top spray nozzle at any time, the online positioning device of the present invention can be equipped with a nozzle position measurement system. When a nozzle position measurement system is installed, by calibrating the data relationship between the output signal of the installed nozzle position measurement system and the actual nozzle position, the height position of the top spray nozzle can be known at any time.

[0022] The beneficial effects of this invention are as follows: The online positioning device and method for the top spray gun of a smelting furnace provided by this invention enables online adjustment of the top spray gun's position, creating conditions for precision production, improved economic efficiency, and reduced costs. At the same time, it also greatly facilitates the disassembly and assembly for maintenance of the top spray gun. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the online adjustment device for the top spray gun of the smelting furnace provided in Example 1; Figure 2 yes Figure 1 AA section diagram; Among them, 1-furnace body system, 2-top spray gun system, 3-lifting system, 4-sealing system, 5-gun fixing system, 6-static and dynamic connection system, 11-furnace body top plate, 12-gun inlet, 21-lifting lug, 22-top spray gun, 31-lifting crane, 32-lifting rope, 41-sealing air inlet, 42-upper air bag, 43-lower air bag, 44-sealing chamber shell, 45-sealing chamber, 51-gun fixing wheel bracket, 52-gun fixing wheel bracket, 53-gun fixing cylinder, 54-gun fixing rope, 55-gun fixing pulley, 56-gun fixing counterweight, 57-gun fixing wheel, 58-gun fixing wheel, 61-oxygen hose, 62-water inlet hose, 63-water outlet hose, 64-pulverized coal hose, 7-encoder. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Example 1 This embodiment discloses an online adjustment device for the top spray gun of a smelting furnace, such as... Figure 1 and Figure 2As shown, it includes furnace body system 1, top spray gun system 2, lifting system 3, sealing system 4, gun fixing system 5, and static and dynamic connection system 6.

[0026] The furnace body system 1 is a direct reduction melting furnace for producing molten iron, and its furnace body top plate 11 has an inlet lance 12. The top spray gun system 2 includes a top spray gun 22, which is water-cooled and sprays both oxygen and pulverized coal. The top spray gun 22 is equipped with lifting lugs 21 for easy hanging. The top spray gun 22 extends into the furnace system 1 through an inlet 12, the diameter of which is approximately 3-5 mm larger than the outer diameter of the top spray gun 22. An air intake gap is provided between the inlet 12 and the outer wall of the top spray gun 22.

[0027] The lifting system 3 includes a lifting crane 31 and a lifting rope 32. The lifting rope 32 is connected to the lifting lug 21 through a detachable connector. The lifting crane 31 lifts the top spray gun 22 above the furnace body system 1 and aligns it with the inlet 12.

[0028] The sealing system 4 is located around the periphery of the inlet 12 at the top of the furnace body system 1. The sealing system 4 includes a sealing chamber shell 44, which is fixed to the furnace body top plate 11 of the furnace body system 1, for example, it can be welded to the furnace body top plate 11. The top of the sealing chamber shell 44 is provided with a top spray gun channel. The upper end of the top spray gun 22 is connected to the lifting system 3, and the lower end extends into the furnace body system through the top spray gun channel and the inlet 12 in sequence. The sealing system also includes a sealing chamber 45 formed by the sealing chamber shell 44, the outer wall of the top spray gun 22 and the furnace body top plate 11. A sealing gas inlet 41 is provided on the sealing chamber shell 44.

[0029] A sealing gas pressure higher than that inside the smelting furnace 1 is introduced into the sealing chamber 45 through the sealing gas inlet 41. The sealing gas overflows into the smelting furnace through the air inlet gap between the outer wall of the top spray gun and the inlet, preventing the furnace gas from overflowing out of the smelting furnace. At the same time, it can also overflow out of the furnace through the gap between the outer wall of the top spray gun and the top spray gun channel.

[0030] In a preferred embodiment, an upper annular seam is formed between the top spray gun channel and the outer wall of the top spray gun 22, and a lower annular seam is formed between the inlet 12 and the outer wall of the top spray gun 22. The sealing system 4 further includes an annular upper airbag 42 disposed at the upper annular seam and an annular lower airbag 43 disposed at the lower annular seam. The upper airbag 42 is fixed to the top inner side of the sealing chamber shell 44, and the lower airbag 43 is fixed to the furnace top plate 11. Both the upper airbag 42 and the lower airbag 43 are provided with filling and exhaust ports. The filling ports of the upper airbag 42 and the lower airbag 43 are connected to a controllable gas source through a gas supply pipe, and the exhaust ports of the upper airbag 42 and the lower airbag 43 are connected to an exhaust pipe. During operation, the controllable gas source continuously supplies gas to the upper airbag 42 and the lower airbag 43. The controllable gas source changes the volume of the upper airbag 42 and the lower airbag 43 by changing the flow rate.

[0031] By setting up upper airbag 42 and lower airbag 43, when the volume of the airbag decreases, part of the upper and lower annular seams are exposed, which allows for adjustment of the height of the top spray gun 22. When the volume of the airbag increases, the upper airbag 42 seals the upper annular seam, and the sealing gas no longer overflows through the upper annular seam, thus saving costs. The lower airbag 43 seals part of the lower annular seam, but still leaves an air inlet gap, so that the gas in the sealing chamber keeps overflowing into the furnace system, preventing the furnace gas in the furnace system 1 from overflowing out, and also providing cooling protection for the lower airbag 43.

[0032] The gun-fixing system 5 includes a fixed-wheel support 51, a movable-wheel support 52, a gun-fixing cylinder 53, a gun-fixing rope 54, a gun-fixing pulley 55, a gun-fixing counterweight 56, a fixed-wheel 57, and a movable-wheel 58. The fixed-wheel support 51 is fixed to the frame, with a fixed-wheel 57 mounted at its upper and lower ends. The movable-wheel support 52 is suspended at the symmetrical center line between the two fixed-wheels 57, and a movable-wheel 58 is mounted on it. One end of the movable-wheel support 52 is connected to the piston rod of the gun-fixing cylinder 53, and the other end is connected to the gun-fixing rope 54. The gun-fixing rope 54 is connected to the gun-fixing counterweight 56 ​​via the movable-wheel 55.

[0033] When the top spray lance 22 needs to be moved horizontally and the lance fixing system 5 needs to be opened, the lance fixing cylinder 53 is inflated. The pulling force of the piston rod of the lance fixing cylinder 53 is greater than that of the lance fixing counterweight 56. The suspended lance fixing wheel bracket 52 moves towards the lance fixing cylinder 53, causing the lance fixing wheel 58 to be pulled open and the clamping state to be released, thus not hindering the horizontal movement and hoisting of the top spray lance 22. When the top spray lance 22 needs to be clamped in place to prevent shaking during operation, the lance fixing cylinder 53 is deflated. Under the action of the lance fixing counterweight 56, the suspended lance fixing wheel bracket 52 moves horizontally towards the side that clamps the top spray lance 22, so that the lance fixing wheel 58 on it, together with the two lance fixing wheels 57, clamps the top spray lance 22 tightly, preventing shaking caused by the spraying. During the online adjustment of the lance position after the furnace is started, the lance fixing system 5 can remain clamped, and the top spray lance 22 needs to be slowly raised and lowered until the desired position is achieved.

[0034] The encoder 7 is coaxially connected to the fixed roller 57. After the top spray gun 22 is installed into the fixed system 5, the encoder is calibrated to the initial height of the position. When the top spray gun 22 moves up and down, the encoder 7 measures the position of the top spray gun 22 as the fixed roller 57 rotates.

[0035] The static and dynamic connection system 6 includes an oxygen hose 61, a water inlet hose 62, a water outlet hose 63, a pulverized coal hose 64, and hose supports. One end of these hoses is connected to the flange of the top spray gun system 2, and the other end is connected to the flanges of the oxygen, pulverized coal, and water supply and return pipelines.

[0036] Example 2 This embodiment discloses a method for online adjustment of the top spray gun of a smelting furnace using the online adjustment device of the top spray gun of embodiment 1, including the following steps: During the operation of the furnace system 1, sealing gas with a pressure higher than that inside the furnace system 1 is continuously injected into the sealing chamber 45. The sealing gas overflows into the furnace system 1 through the air intake gap between the outer wall of the top spray gun 22 and the inlet 12, preventing the furnace gas inside the furnace system 1 from overflowing. When adjusting the position of the top spray gun 22 during debugging or production operations, first perform the following operations: The volumes of the upper airbag 42 and the lower airbag 43 are changed to shrink the upper airbag 42 and the lower airbag 43, exposing part of the upper and lower annular seams, so that the top spray gun 22 can move up and down without obstruction. At this time, the sealing gas flow rate must still be able to maintain the pressure in the sealing chamber 45 greater than the gas pressure in the furnace system 1, that is, to keep the sealing gas in the sealing chamber 45 overflowing into the furnace system 1 through the air inlet gap, and to ensure that the gas in the furnace system 1 will not leak out of the furnace system 1. Next, adjust the position of the top spray gun 22: The top spray gun 22 is raised or lowered by the lifting system 3 to reach the predetermined gun position. Then, the state of the lifting system 3 is kept unchanged to adjust the position of the top spray gun 22 to meet the positioning requirements. During the adjustment process, the height and position of the top spray gun muzzle are monitored in real time through the gun position measurement system.

[0037] After the top spray gun 22 is adjusted to the correct position, perform the following operations: By changing the volume of the upper airbag 42 and the lower airbag 43, the upper circumferential seam is completely sealed, while an air inlet gap is left at the lower circumferential seam, so that the gas in the sealed chamber continues to overflow into the furnace system, thereby cooling the lower airbag 43 and providing protection. When the top spray gun needs to be moved horizontally during commissioning or production operations, first perform the following operations: Control the inflation of the gun-fixing cylinder so that the pulling force of the piston rod of the gun-fixing cylinder is greater than the weight of the fixed counterweight, so that the gun-fixing wheel bracket moves towards the gun-fixing cylinder, so that the gun-fixing wheel moves away from the outer wall of the top spray gun and releases the clamping state. After the top spray gun is properly leveled, perform the following operations: By controlling the release of air from the gun-fixing cylinder, the gun-fixing moving wheel bracket moves towards the gun-fixing stationary wheel under the action of the fixed counterweight, so that the gun-fixing moving wheel abuts against the outer wall of the top spray gun, and the top spray gun is in a clamped state.

Claims

1. An online adjustment device for a top spray gun of a smelting furnace, characterized in that, This includes the furnace body system, top spray gun system, lifting system, sealing system, and static and dynamic connection system; The top of the furnace body system is a furnace top plate, and the furnace top plate is provided with a gun inlet; The top spray gun system includes a top spray gun, which is provided with a gaseous medium channel and / or a solid material channel. The lifting system is mounted on the furnace body system and is connected to the top spray gun system; The sealing system includes a sealing chamber shell connected to the upper side of the furnace top plate. The top of the sealing chamber shell is provided with a top spray gun channel. The upper end of the top spray gun is connected to the lifting system, and the lower end extends into the furnace system through the top spray gun channel and the inlet in sequence. The sealing system also includes a sealing chamber formed by the sealing chamber shell, the outer wall of the top spray gun, and the furnace top plate. A sealing gas inlet is provided on the sealing chamber shell, and an air inlet gap is provided between the outer wall of the top spray gun and the inlet. The static-dynamic connection system includes a gas medium conveying hose and / or a solid material conveying hose. The two ends of the gas medium conveying hose are respectively connected to the top spray gun system and the gas medium supply pipeline, and the two ends of the solid material conveying hose are respectively connected to the top spray gun system and the solid material supply pipeline.

2. The online adjustment device for the top spray gun of the smelting furnace as described in claim 1, characterized in that: An upper annular seam is formed between the outer wall of the top spray gun and the top spray gun channel, and a lower annular seam is formed between the outer wall of the top spray gun and the inlet. An annular upper air bladder is provided at the upper circumferential seam, and the upper air bladder is fixed to the top of the inner side of the sealing chamber shell; an annular lower air bladder is provided at the lower circumferential seam, and the lower air bladder is fixed to the top plate of the furnace body. Both the upper and lower airbags are equipped with an inflation port and an exhaust port. The inflation port is connected to the air supply pipe of the air source, and the exhaust port is connected to the exhaust pipe.

3. The online adjustment device for the top spray gun of the smelting furnace as described in claim 1, characterized in that: It also includes a gun securing system, which is located above the sealing system. The gun securing system includes a gun securing fixed wheel bracket, a gun securing moving wheel bracket, a gun securing cylinder, a gun securing rope, a gun securing pulley, and a gun securing counterweight. The fixed-gun wheel bracket is fixed to the frame. At least one fixed-gun wheel is mounted on the upper and lower sides of the fixed-gun wheel bracket. A fixed-gun moving-wheel bracket is suspended at the symmetrical center line of the upper and lower fixed-gun wheels. At least one fixed-gun moving-wheel is mounted on the moving-gun wheel bracket. One end of the moving-gun wheel bracket is connected to the piston rod of the fixed-gun cylinder, and the other end is connected to the fixed-gun rope. The fixed-gun rope is connected to the fixed-gun counterweight via a fixed-gun pulley. The top spray gun is located between the fixed gun moving wheel and the fixed gun stationary wheel.

4. The online adjustment device for the top spray gun of the smelting furnace as described in claim 1, characterized in that: It also includes a gun position measurement system, which is any one of a radar positioning device, an encoder assembled with a fixed gun wheel, a sliding resistance positioning device, or a scale observation device.

5. The online adjustment device for the top spray gun of the smelting furnace as described in claim 1, characterized in that: The top spray gun system also includes nozzles, flow guides, and cooling components; And / or, the sealing gas is nitrogen or carbon dioxide; And / or, the lifting system includes a power unit, a transmission unit, and a clutchable connector, wherein the power unit is connected to the clutchable connector via the transmission unit, and the transmission unit is connected to the top spray gun via the clutchable connector.

6. A method for online adjustment of the top spray gun of a smelting furnace using the online adjustment device for the top spray gun of a smelting furnace according to any one of claims 1 to 5, characterized in that, Includes the following steps: During the operation of the furnace system, sealing gas higher than the pressure inside the furnace system is continuously supplied to the sealed chamber. The sealing gas overflows into the furnace system through the air inlet gap between the outer wall of the top spray gun and the inlet, preventing the furnace gas inside the furnace system from overflowing. When it is necessary to adjust the position of the top spray gun during debugging or production operations, the top spray gun is raised or lowered to the predetermined position through the lifting system. Then, the state of the lifting system is kept unchanged to adjust the position of the top spray gun to meet the positioning requirements.

7. The online adjustment method for the top spray gun of a smelting furnace as described in claim 6, characterized in that, The online adjustment device for the top spray gun of the smelting furnace as described in claim 2 further includes the following steps: When adjusting the position of the top spray gun during commissioning or production operations, first perform the following operations: By changing the volume of the upper and lower air bladders, the upper and lower air bladders are contracted, exposing the upper and lower annular seams. During this process, the sealing gas in the sealed chamber overflows into the furnace system through the air inlet gap, ensuring that the gas in the furnace system does not leak out of the furnace system. After the top spray gun is positioned correctly, perform the following operations: By changing the volume of the upper and lower air bladders, the upper circumferential seam is completely sealed, while an air inlet gap is left at the lower circumferential seam, so that the gas in the sealed chamber continues to overflow into the furnace system.

8. The online adjustment method for the top spray gun of a smelting furnace as described in claim 7, characterized in that, When the upper and lower airbags are inflated, the pressurized gas inside them also flows.

9. The online adjustment method for the top spray gun of a smelting furnace as described in claim 6, characterized in that, The online adjustment device for the top spray gun of the smelting furnace as described in claim 3 further includes the following steps: When the top spray gun needs to be moved horizontally during commissioning or production operations, first perform the following operations: Control the inflation of the gun-fixing cylinder so that the pulling force of the piston rod of the gun-fixing cylinder is greater than the weight of the fixed counterweight, so that the gun-fixing wheel bracket moves towards the gun-fixing cylinder, so that the gun-fixing wheel moves away from the outer wall of the top spray gun and releases the clamping state. After the top spray gun is properly leveled, perform the following operations: By controlling the release of air from the gun-fixing cylinder, the gun-fixing moving wheel bracket moves towards the gun-fixing stationary wheel under the action of the fixed counterweight, so that the gun-fixing moving wheel abuts against the outer wall of the top spray gun, and the top spray gun is in a clamped state.

10. The online positioning method for the top spray gun of a smelting furnace as described in claim 6, characterized in that: The height and position of the top spray gun muzzle are monitored in real time through a gun position measurement system.

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