A buried tube cast copper surfacing blast hole welding device

Abstract

The application discloses a buried pipe copper surfacing blast hole welding device and belongs to the technical field of welding equipment. The device comprises a fixing frame, a welding gun and a moving frame are arranged on the fixing frame, a moving sleeve is rotatably installed on the moving frame, the moving sleeve is coaxially arranged with a blast hole, a plurality of clamping plates are installed on the moving sleeve, the plurality of clamping plates are equidistantly arranged along the circumference of the moving sleeve, a clamping driving assembly for driving the clamping plates to abut against the outer periphery of the blast hole is arranged on the moving sleeve, a rotating driving assembly for driving the moving sleeve to rotate is arranged on the moving frame, and a horizontal driving assembly for driving the moving frame to move horizontally along the axial direction of the blast hole is arranged on the fixing frame. The device can realize uniform and dense blast hole surfacing layer, can make the weld seam beautiful, and can effectively improve the welding quality.

Description

Technical Field

[0001] This application relates to the technical field of welding equipment, and in particular to a welding device for a blower nozzle for buried copper overlay welding. Background Technology

[0002] Fixed-bed pulverized coal slag pressurized gasification technology is a type of gasifier with liquid slag discharge. Coal enters the gasifier intermittently from the top through a coal lock. The gasifying agent, formed by steam and oxygen, is injected into the furnace from oxygen nozzles at the bottom at a certain angle, forming an oxygen-rich combustion zone in the center. The average temperature of this zone is about 1500℃, and the maximum temperature can reach about 2200℃. This oxygen-rich combustion zone provides the heat source for the operation of the gasifier and requires continuous injection of steam and oxygen. The nozzles must operate in a high-temperature environment for a long time. At the same time, the nozzles must be inserted into the coal pile, and the coal abrades the nozzles as it moves downwards. Therefore, the nozzles must have the ability to resist high temperatures and abrasion.

[0003] To meet the performance requirements of high temperature resistance and abrasion resistance of nozzles, the structure of the air inlet typically includes a cooling water coil body, a central tube body, a cast copper part that wraps the cooling water coil body and the central tube body, and a high temperature resistant, oxidation resistant and wear resistant weld overlay layer at the outer front end.

[0004] When performing overlay welding on the front end of the blast outlet, existing technologies often use simple tooling for the operation. Most of these simple tooling can only achieve a single rotational or translational motion, making it difficult to form a precise and stable spiral relative motion trajectory between the blast outlet end face to be welded and the welding torch. When performing multi-layer, multi-pass annular overlay welding, defects such as uneven thickness, poor interlayer bonding, and irregular forming of the overlay layer are prone to occur, affecting the overall quality and performance consistency of the blast outlet. Summary of the Invention

[0005] In order to improve the technical problems of uneven quality and poor forming of multi-layer and multi-pass annular weld overlay layers that are prone to occur in existing blast outlet welding devices, this application provides a welding device for blast outlets for embedded pipe cast copper overlay welding.

[0006] The technical solution provided in this application for a welding device for a cast copper overlay blast outlet in an embedded pipe is as follows: A welding device for a blast furnace outlet for buried copper overlay welding includes a fixed frame, a welding torch and a movable frame, a movable sleeve rotatably mounted on the movable frame, the movable sleeve being coaxially arranged with the blast furnace outlet, a plurality of clamping plates mounted on the movable sleeve, the clamping plates being equally spaced along the circumference of the movable sleeve, a clamping drive assembly for driving the clamping plates to abut against the outer periphery of the blast furnace outlet on the movable sleeve, a rotation drive assembly for driving the movable sleeve to rotate on the movable frame, and a horizontal drive assembly for driving the movable frame to move horizontally along the axial direction of the blast furnace outlet on the fixed frame.

[0007] By adopting the above technical solution, the moving frame is moved towards the direction of the air inlet, so that the air inlet is located between several clamping plates. Then, the clamping plates are driven to abut against the outer circumference of the air inlet. The clamping plates apply force evenly from the outer circumference of the air inlet, realizing automatic centering and stable clamping of the air inlet. This ensures that the axis of rotation of the air inlet coincides with the axis of rotation of the moving sleeve, laying the foundation for subsequent precise welding. Then, the rotating drive component drives the moving sleeve to rotate, which in turn drives the clamped air inlet to rotate. At the same time, the horizontal drive component drives the moving frame and the moving sleeve to move horizontally along the axis of the air inlet, so that the end face of the sample to be welded achieves precise spiral motion relative to the welding gun in a fixed position. This ensures that the weld layer is uniform and dense, the weld formation is beautiful, and the welding quality is effectively improved.

[0008] Preferably, the clamping drive assembly includes a control ring sleeved on the outer periphery of the movable sleeve, the control ring being rotatably connected to the movable sleeve, a plurality of arc-shaped through slots being formed on the side of the control ring, a control rod being inserted through the arc-shaped through slots, the control rod slidingly engaging with the control ring through the arc-shaped through slots, the control rod corresponding one-to-one with the clamping plate, two guide rods being fixed between the control rods and the clamping plate, and a guide through hole for the guide rods to pass through being formed on the outer periphery of the movable sleeve.

[0009] By adopting the above technical solution, the control ring is rotated, causing the control ring and the moving sleeve to rotate relative to each other. The control ring drives the control rod to move through the arc-shaped through groove, causing the guide rod and clamping block to move radially along the moving sleeve. This allows the clamping plates to clamp and fix the air inlet, ensuring that all clamping plates can move synchronously and strictly along the radial direction of the moving sleeve, with consistent movements and uniform clamping force on the air inlet. This avoids the air inlet from tilting or shaking due to eccentric clamping.

[0010] Preferably, a connecting ring is fixedly fitted onto the outer circumferential surface of the movable sleeve, and a cylinder is hinged to the side of the connecting ring. The piston rod end of the cylinder is hinged to the side of the control ring.

[0011] By adopting the above technical solution, the extension and retraction of the cylinder piston rod can drive the control ring to rotate relative to the moving sleeve, thereby realizing the automatic clamping and loosening of the air inlet.

[0012] Preferably, the movable frame includes a vertically arranged movable plate, and the rotation drive assembly includes a gear and a gear ring rotatably mounted on the movable plate. The gear and the gear ring mesh with each other, and the gear ring is sleeved and fixed to the outer periphery of the connecting ring. A motor is mounted on the movable plate, and the output end of the motor is coaxially and fixedly connected to the rotation shaft of the gear.

[0013] By adopting the above technical solution, starting motor one drives the gear, and then the gear and gear ring mesh to drive the moving sleeve to rotate, resulting in smooth transmission, strong impact resistance and high reliability.

[0014] Preferably, the fixing frame includes a horizontally arranged top plate and a support plate 1. The movable plate is sleeved on the outer periphery of the top plate. The horizontal drive assembly includes an electric push rod fixed on the support plate 1. The piston rod end of the electric push rod is fixed with an abutting cylinder. The abutting cylinder is coaxially arranged with the movable sleeve. The end face of the abutting cylinder can abut against the rear end of the blower. Four connecting rods 1 are fixed on the outer periphery of the abutting cylinder. Connecting rods 2 are fixed between the connecting rods 1 and the movable plate.

[0015] By adopting the above technical solution, the electric push rod is activated, which drives the abutting cylinder to move. Then, the force is transmitted to the moving plate through connecting rod one and connecting rod two, thereby driving the entire moving frame to move horizontally, ensuring the stability of horizontal movement. At the same time, the rear end of the air outlet can abut against the abutting cylinder to ensure the accurate welding position of the air outlet.

[0016] Preferably, the fixed frame includes a horizontally arranged support plate two, and two conveying rods for transporting the air inlet are fixed on the top surface of the support plate two. The conveying rods are horizontally arranged, and the welding torch is located between the conveying rods and the movable frame. A cylinder two is installed below the welding torch, and a support plate is fixed to the top of the piston rod of the cylinder two. A support rod is fixed to the top surface of the support plate, and an arc-shaped plate for placing the air inlet is fixed to the top of the support rod. The arc-shaped plate is located between the conveying rod and the movable sleeve.

[0017] By adopting the above technical solution, before or after clamping the air inlet, the arc plate can be raised by cylinder two to support the bottom of the sample, so that the clamping plate can clamp and fix the air inlet and prevent the sample from sagging or swinging during the clamping process.

[0018] Preferably, an isolation plate is installed on the top surface of the second support plate, and two vertically arranged isolation rods are fixed on the bottom surface of the isolation plate. An isolation through hole for the isolation rods is opened on the top surface of the second support plate, and a pressure plate is fixed at the bottom end of the isolation rod. The bottom surface of the pressure plate can abut against the top surface of the support plate.

[0019] By adopting the above technical solution, when the arc plate rises, the support plate and the pressure plate abut against each other and push the isolation plate upward so that the air vent on the conveyor rod can move onto the arc plate. After the air vent moves onto the arc plate and is clamped, the arc plate moves downward. At the same time, the support plate and the isolation plate separate. The isolation plate moves downward under its own gravity. The isolation plate separates the welding area from the air vent on the conveyor rod, blocking the spatter, heat and arc light generated during the welding process.

[0020] Preferably, a return spring is sleeved on the outer periphery of the isolation rod, the bottom end of the return spring abuts against the top surface of the pressure plate, and the top end of the return spring abuts against the bottom surface of the second support plate.

[0021] By adopting the above technical solution, when the support plate is pushed up, the pressure plate is lifted up and the return spring is compressed; when the support plate is lowered, the return spring releases its elastic force, so that the isolation plate and the pressure plate automatically return to their original positions.

[0022] Preferably, a feeding platform is provided below the welding torch, and the feeding platform is located directly above the second cylinder. The top surface of the feeding platform has a clearance groove for the arc-shaped plate to pass through. One end of the feeding platform is provided with an inclined output plate. The top surface of the feeding platform is inclined downward near the output plate. The top surface of the arc-shaped plate has a pushing groove. A pushing plate is fixed to the inner wall of the clearance groove. The pushing plate can pass through the pushing groove.

[0023] By adopting the above technical solution, after the welding of the air inlet is completed, the arc plate moves upward and supports the air inlet. The clamping plate releases its clamping and fixing of the air inlet. The arc plate drives the air inlet to move downward. When the arc plate passes through the clearance groove, the air inlet abuts against the top surface of the push plate. The air inlet falls on the unloading platform and moves to the output plate under its own gravity.

[0024] Preferably, the top surface of the support plate two is equipped with a gas pump for conveying inert gas and a preheating box connected to the gas pump. The top surface of the preheating box is connected to a gas pipe, and the other end of the gas pipe is equipped with a gas nozzle. A cylinder three is installed on the top plate, and the bottom end of the piston rod of the cylinder three is fixedly connected to the welding torch.

[0025] By adopting the above technical solution, the gas pump can deliver inert gas, the preheating box can preheat the inert gas, and the preheated inert gas is blown to the welding area through the gas nozzle to preheat the workpiece before welding, reduce the cooling rate of the weld, prevent cracks, and at the same time form an effective local gas protection to prevent the molten pool and weld overlay from being oxidized at high temperature. The lifting and lowering of the welding torch can be precisely controlled by the cylinder, which makes it easy to adjust the relative height of the welding torch and the air nozzle at different welding stages.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The moving frame is moved towards the air vent, positioning the air vent between several clamping plates. The clamping plates are then driven to abut against the outer circumference of the air vent, applying uniform force from the outer circumference to achieve automatic centering and stable clamping of the air vent. This ensures that the axis of rotation of the air vent coincides with the axis of rotation of the moving sleeve, laying the foundation for subsequent precise welding. The rotating drive assembly then drives the moving sleeve to rotate, which in turn drives the clamped air vent to rotate. Simultaneously, the horizontal drive assembly drives the moving frame and moving sleeve to move horizontally along the axis of the air vent, enabling the sample's end face to be welded to achieve precise helical motion relative to the welding torch in a fixed position. This is suitable for multi-layer, multi-pass annular surfacing welding processes, ensuring a uniform and dense weld layer, aesthetically pleasing weld formation, and effectively improving welding quality. Rotating the control ring causes it to rotate relative to the moving sleeve. The control ring moves the control rod through the arc-shaped groove, causing the guide rod and clamping block to move radially along the moving sleeve. This allows the clamping plates to clamp and fix the air inlet, ensuring that all clamping plates can move synchronously and strictly along the radial direction of the moving sleeve. This results in consistent action and uniform clamping force on the air inlet, preventing the air inlet from tilting or shaking due to eccentric clamping. Before or after clamping the air inlet, the arc-shaped plate can be raised by cylinder two to support the bottom of the sample, so that the clamping plate can clamp and fix the air inlet and prevent the sample from sagging or swinging during the clamping process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the buried pipe cast copper overlay welding blast outlet welding device according to an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the welding torch and conveyor rod in the blast furnace welding device for buried copper overlay welding according to an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the moving frame in the blast furnace welding device for buried copper overlay welding of pipes, according to an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the control ring and connecting ring in the blast furnace welding device for buried copper overlay welding of pipes, according to an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the electric push rod and the abutting cylinder in the blast furnace welding device for buried copper overlay welding of pipes according to an embodiment of this application.

[0032] Figure 6 This is a schematic diagram of the unloading platform and the arc plate in the blast furnace welding device for buried copper overlay welding according to an embodiment of this application.

[0033] Figure 7 This is a schematic diagram of the isolation plate in the buried pipe cast copper overlay welding blast outlet welding device according to an embodiment of this application.

[0034] Attached reference numerals: 1. Fixed frame; 11. Support plate one; 12. Support plate two; 13. Top plate; 14. Conveying rod; 15. Welding torch; 16. Cylinder three; 17. Air pump; 18. Preheating box; 19. Air supply pipe; 191. Air nozzle; 2. Moving frame; 21. Moving plate; 22. Moving sleeve; 23. Clamping plate; 24. Control ring; 25. Arc-shaped through groove; 26. Control rod; 27. Guide rod; 28. Guide through hole; 3. Connecting ring; 31. Cylinder 1; 32. Gear ring; 33. Gear; 34. Motor 1; 4. Electric push rod; 41. Abutting cylinder; 42. Connecting rod 1; 43. Connecting rod 2; 5. Support plate; 51. Cylinder 2; 52. Support rod; 53. Arc plate; 54. Pushing slot; 6. Isolation plate; 61. Isolation rod; 62. Isolation through hole; 63. Pressing plate; 64. Return spring; 7. Unloading platform; 71. Clearance slot; 72. Output plate; 73. Push plate. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0036] This application discloses a welding device for a blower vent for buried copper casting overlay welding.

[0037] Reference Figure 1 The welding device for the blast furnace outlet of the buried copper overlay welding pipe includes a fixed frame 1, which includes a first support plate 11, a second support plate 12, and a top plate 13. A movable frame 2 is slidably installed between the first support plate 11 and the second support plate 12 in the horizontal direction. The movable frame 2 includes a vertically arranged movable plate 21, the top of which is sleeved on the outer periphery of the top plate 13, and the movable plate 21 slides and engages with the top plate 13 in the horizontal direction.

[0038] Reference Figure 1 and Figure 2 Two horizontally arranged conveyor rods 14 are fixed to the top surface of the support plate 12. The conveyor rods 14 are used to transport the air nozzle. The welding torch 15 is located between the conveyor rods 14 and the moving frame 2. A cylinder 16 is installed on the top plate 13. The bottom end of the piston rod of the cylinder 16 is fixedly connected to the welding torch 15 to control the lifting and lowering of the welding torch 15. A gas pump 17 for conveying inert gas and a preheating box 18 connected to the gas pump 17 are installed on the top surface of the support plate 12. A gas supply pipe 19 is connected to the top surface of the preheating box 18. An exhaust nozzle 191 is installed at the other end of the gas supply pipe 19, and the exhaust nozzle 191 is oriented towards the welding area.

[0039] Reference Figure 3 and Figure 4 A movable sleeve 22 is rotatably mounted on the movable frame 2, and the movable sleeve 22 is coaxially arranged with the air inlet to be welded. Three clamping plates 23 are installed inside the movable sleeve 22, and the three clamping plates 23 are evenly spaced along the circumference of the movable sleeve 22. A control ring 24 is fitted around the outer circumference of the movable sleeve 22, and the control ring 24 is rotatably connected to the movable sleeve 22. Three arc-shaped through slots 25 are formed on the side of the control ring 24, and control rods 26 pass through the arc-shaped through slots 25, allowing the control rods 26 to slide within the arc-shaped through slots 25. Each control rod 26 corresponds to one of the clamping plates 23, and two guide rods 27 are fixed between the control rod 26 and the corresponding clamping plate 23. A guide hole 28 is formed on the outer circumferential surface of the movable sleeve 22 for the guide rods 27 to pass through, and the guide rods 27 slide and engage with the movable sleeve 22 radially through the guide hole 28. A connecting ring 3 is fixedly fitted onto the outer circumferential surface of the movable sleeve 22. A cylinder 31 is hinged to the side of the connecting ring 3. The piston rod end of the cylinder 31 is hinged to the side of the control ring 24.

[0040] When cylinder 31 is activated, the piston rod of cylinder 31 drives the control ring 24 to rotate relative to the moving sleeve 22, which in turn drives the control rod 26 to move through the arc-shaped through groove 25, so that the guide rod 27 and the clamping plate 23 move synchronously in the radial direction, thereby realizing the automatic clamping or loosening of the air outlet.

[0041] Reference Figure 1 and Figure 2 A gear 33 and a gear ring 32 are rotatably mounted on the movable plate 21, with the gear ring 32 sleeved and fixed to the outer circumference of the connecting ring 3. A motor 34 is mounted on the movable plate 21, and the output end of the motor 34 is coaxially and fixedly connected to the rotating shaft of the gear 33. When the motor 34 is started, the movable sleeve 22 can be rotated through the transmission of the gear 33 and the gear ring 32.

[0042] Reference Figure 1 and Figure 5 An electric push rod 4 is mounted on the top surface of the support plate 11, and an abutment cylinder 41 is fixed to the end of the piston rod of the electric push rod 4. The abutment cylinder 41 is coaxially arranged with the movable sleeve 22, and the end face of the abutment cylinder 41 can abut against the rear end of the blower. Four connecting rods 42 are fixed to the outer circumferential surface of the abutment cylinder 41, and a connecting rod 43 is fixed between each connecting rod 42 and the movable plate 21.

[0043] Start the electric push rod 4. The electric push rod 4 pushes the abutting cylinder 41 to move. Through the connecting rod 1 42 and the connecting rod 2 43, it drives the moving plate 21 and the entire moving frame 2 to move horizontally. At the same time, the abutting cylinder 41 limits the rear end of the blower to ensure accurate welding position.

[0044] Reference Figure 2 and Figure 6The welding torch 15 is located between the conveying rod 14 and the moving frame 2. A cylinder 51 is installed below the welding torch 15, and a support plate 5 is fixed to the top of the piston rod of the cylinder 51. A support rod 52 is fixed to the top surface of the support plate 5, and an arc plate 53 is fixed to the top of the support rod 52. The arc plate 53 is located between the conveying rod 14 and the moving sleeve 22.

[0045] Before or after clamping the air inlet, the arc plate 53 can be raised by cylinder 2 51 to support the bottom of the air inlet, so that the clamping plate 23 can clamp and fix the air inlet and prevent the air inlet from sagging or swinging during the clamping process.

[0046] Reference Figure 2 and Figure 7 An isolation plate 6 is installed on the top surface of the support plate 2 12. Two vertical isolation rods 61 are fixed on the bottom surface of the isolation plate 6. An isolation through hole 62 is provided on the support plate 2 12 for the isolation rods 61 to pass through. A pressure plate 63 is fixed to the bottom end of the isolation rod 61, and the bottom surface of the pressure plate 63 can abut against the top surface of the support plate 5. A return spring 64 is sleeved on the outer periphery of the isolation rod 61. The bottom end of the return spring 64 abuts against the top surface of the pressure plate 63, and the top end of the return spring 64 abuts against the bottom surface of the support plate 2 12.

[0047] As the arc plate 53 rises, the support plate 5 abuts against the pressure plate 63 and pushes the isolation plate 6 upward so that the air vent on the conveyor rod 14 can move onto the arc plate 53. After the air vent moves onto the arc plate 53 and is clamped, the arc plate 53 moves downward. At the same time, the support plate 5 separates from the isolation plate 6. The isolation plate 6 moves downward under the elastic force of the return spring 64. The isolation plate 6 separates the welding area from the air vent on the conveyor rod 14, blocking the spatter, heat and arc light generated during the welding process.

[0048] Reference Figure 2 and Figure 6 Below the welding torch 15 is a feeding platform 7, located directly above the cylinder 51. The top surface of the feeding platform 7 has a clearance groove 71 for the arc-shaped plate 53 to pass through. One end of the feeding platform 7 has an inclined output plate 72, and the top surface of the feeding platform 7 slopes downwards near the output plate 72. The top surface of the arc-shaped plate 53 has a pushing groove 54, and a pushing plate 73 is fixed to the inner wall of the clearance groove 71, allowing the pushing plate 73 to pass through the pushing groove 54.

[0049] After the welding of the air inlet is completed, the arc plate 53 moves upward and supports the air inlet. The clamping plate 23 releases its clamping and fixing of the air inlet. The arc plate 53 drives the air inlet to move downward. When the arc plate 53 passes through the relief groove 71, the air inlet abuts against the top surface of the push plate 73. The air inlet falls on the unloading platform 7 and moves to the output plate 72 under its own gravity.

[0050] The implementation principle of the buried pipe copper overlay welding blast port welding device in this application embodiment is as follows: In the initial stage, cylinder 51 is started, and the support plate 5 drives the support rod 52 and the arc plate 53 to rise. The arc plate 53 is located between the conveying rod 14 and the moving sleeve 22, and the isolation plate 6 is located above the blast port to make room for the blast port to enter the clamping area. Under the action of the transport device, the blast port on the conveying rod 14 moves toward the direction closer to the moving sleeve 22, so that the blast port close to the isolation plate 6 moves above the arc plate 53. Start the electric push rod 4 to push the abutting cylinder 41 to move horizontally. Through the connecting rod 1 42 and the connecting rod 2 43, the moving frame 2 and the moving sleeve 22 are moved towards the welding gun 15. When the end face of the abutting cylinder 41 abuts against the rear end of the blower, the movement stops. Next, cylinder 31 is activated to drive the control ring 24 to rotate relative to the moving sleeve 22. The arc-shaped through groove 25 on the control ring 24 drives the control rod 26 and the guide rod 27 to move radially inward, so that the three clamping plates 23 move towards the center synchronously and clamp the air inlet evenly from the outer periphery to achieve automatic centering. Then, cylinder 51 is used to move the arc plate 53 downward, and the isolation plate 6 abuts against the top surface of the support plate 12. Start cylinder 16, adjust welding torch 15 to a suitable height, start air pump 17 and preheating box 18, the preheated inert gas is blown through air nozzle 191 to the front end of the blower to be welded area for preheating and gas protection; start motor 34, drive moving sleeve 22 and the clamped blower to rotate at a constant speed through gear 33 and gear ring 32, while electric push rod 4 continues to slowly push moving frame 2 horizontally according to preset program, so that the end face of the blower to be welded produces a precise spiral motion relative to welding torch 15, welding torch 15 performs multi-layer and multi-pass welding according to predetermined process parameters until the entire front end welding layer is completed.

[0051] After the welding is completed, turn off motor 34 and air pump 17, and raise welding torch 15. Start cylinder 2 51, the arc plate 53 rises to support the air inlet, the clamping plate 23 releases the air inlet, the electric push rod 4 drives the moving frame 2 to move backward, so that the air inlet is separated from the moving frame 2, and the arc plate 53 drives the air inlet to descend; when the arc plate 53 passes through the clearance groove 71 of the unloading platform 7, the push plate 73 passes through the push groove 54 on the arc plate 53 and abuts against the air inlet, the air inlet is pushed away from the arc plate 53 and falls on the unloading platform 7, and the air inlet rolls to the output plate 72 under its own gravity, completing the automatic unloading.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A welding device for a cast copper overlay blast furnace nozzle for embedded pipes, characterized in that: The assembly includes a fixed frame (1), on which a welding torch (15) and a movable frame (2) are mounted. A movable sleeve (22) is rotatably mounted on the movable frame (2), which is coaxially arranged with the air outlet. A plurality of clamping plates (23) are mounted on the movable sleeve (22), which are equally spaced along the circumference of the movable sleeve (22). A clamping drive assembly is provided on the movable sleeve (22) for driving the clamping plates (23) to abut against the outer periphery of the air outlet. A rotation drive assembly is provided on the movable frame (2) for driving the movable sleeve (22) to rotate. A horizontal drive assembly is provided on the fixed frame (1) for driving the movable frame (2) to move horizontally along the axial direction of the air outlet.

2. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 1, characterized in that: The clamping drive assembly includes a control ring (24) sleeved on the outer periphery of the movable sleeve (22). The control ring (24) is rotatably connected to the movable sleeve (22). The side of the control ring (24) is provided with a plurality of arc-shaped through grooves (25). A control rod (26) is inserted in the arc-shaped through grooves (25). The control rod (26) slides and engages with the control ring (24) through the arc-shaped through grooves (25). The control rod (26) corresponds one-to-one with the clamping plate (23). Two guide rods (27) are fixed between the control rod (26) and the clamping plate (23). The outer periphery of the movable sleeve (22) is provided with a guide through hole (28) for the guide rods (27) to pass through.

3. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 2, characterized in that: A connecting ring (3) is fixedly fitted on the outer circumference of the movable sleeve (22). A cylinder (31) is hinged to the side of the connecting ring (3). The piston rod end of the cylinder (31) is hinged to the side of the control ring (24).

4. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 3, characterized in that: The movable frame (2) includes a vertically arranged movable plate (21). The rotation drive assembly includes a gear (33) and a gear ring (32) rotatably mounted on the movable plate (21). The gear (33) and the gear ring (32) mesh with each other. The gear ring (32) is sleeved and fixed on the outer periphery of the connecting ring (3). A motor (34) is mounted on the movable plate (21). The output end of the motor (34) is coaxially and fixedly connected to the rotation shaft of the gear (33).

5. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 4, characterized in that: The fixed frame (1) includes a horizontally arranged top plate (13) and a support plate (11). The movable plate (21) is sleeved on the outer periphery of the top plate (13). The horizontal drive assembly includes an electric push rod (4) fixed on the support plate (11). The piston rod end of the electric push rod (4) is fixed with an abutting cylinder (41). The abutting cylinder (41) is coaxially arranged with the movable sleeve (22). The end face of the abutting cylinder (41) can abut against the rear end of the blower. Four connecting rods (42) are fixed on the outer periphery of the abutting cylinder (41). Connecting rods (43) are fixed between the connecting rods (42) and the movable plate (21).

6. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 5, characterized in that: The fixed frame (1) includes a horizontally arranged support plate two (12). Two conveying rods (14) for transporting the air inlet are fixed on the top surface of the support plate two (12). The conveying rods (14) are horizontally arranged. The welding gun (15) is located between the conveying rods (14) and the movable frame (2). A cylinder two (51) is installed below the welding gun (15). A support plate (5) is fixed at the top of the piston rod of the cylinder two (51). A support rod (52) is fixed on the top surface of the support plate (5). An arc plate (53) for placing the air inlet is fixed at the top of the support rod (52). The arc plate (53) is located between the conveying rod (14) and the movable sleeve (22).

7. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 6, characterized in that: The top surface of the second support plate (12) is equipped with an isolation plate (6), and the bottom surface of the isolation plate (6) is fixed with two vertically arranged isolation rods (61). The top surface of the second support plate (12) is provided with an isolation through hole (62) for the isolation rods (61) to pass through. The bottom end of the isolation rod (61) is fixed with a pressure plate (63), and the bottom surface of the pressure plate (63) can abut against the top surface of the support plate (5).

8. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 7, characterized in that: A return spring (64) is sleeved on the outer periphery of the isolation rod (61). The bottom end of the return spring (64) abuts against the top surface of the pressure plate (63), and the top end of the return spring (64) abuts against the bottom surface of the support plate (12).

9. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 7, characterized in that: A feeding platform (7) is provided below the welding torch (15). The feeding platform (7) is located directly above the cylinder (51). The top surface of the feeding platform (7) is provided with a clearance groove (71) for the arc plate (53) to pass through. One end of the feeding platform (7) is provided with an inclined output plate (72). The top surface of the feeding platform (7) is inclined downward on the side close to the output plate (72). The top surface of the arc plate (53) is provided with a pushing groove (54). The inner wall of the clearance groove (71) is fixed with a pushing plate (73). The pushing plate (73) can pass through the pushing groove (54).

10. The welding device for the blast furnace outlet of the embedded pipe cast copper overlay welding according to claim 6, characterized in that: The top surface of the support plate 2 (12) is equipped with a gas pump (17) for conveying inert gas and a preheating box (18) connected to the gas pump (17). The top surface of the preheating box (18) is connected with a gas pipe (19). The other end of the gas pipe (19) is equipped with a gas nozzle (191). The top plate (13) is equipped with a cylinder 3 (16). The bottom end of the piston rod of the cylinder 3 (16) is fixedly connected to the welding gun (15).

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