Stop valve electric arc welding device with anti-splashing structure

Abstract

The stop valve electric arc welding device with the anti-splashing structure comprises a welding structure, a waste gas treatment structure and a cleaning structure are fixed to the welding structure, the cleaning structure is located on one side of the waste gas treatment structure, a limiting supporting rotating structure is slidably connected to the welding structure, and a first moving assembly comprises a first motor box. A motor in the first motor box drives a screw to rotate, the screw rotates to drive a first sliding block to move left and right, the welding assembly comprises a manipulator, a welding gun body is fixed to the manipulator, the splash-proof assembly comprises a second motor box, and a motor in the second motor box drives a gear to rotate. According to the stop valve electric arc welding device with the anti-splashing structure, the gear rotates to drive the anti-splashing door to move up and down in the welding box through the rack, so that the anti-splashing effect is achieved, and the stop valve electric arc welding device with the anti-splashing structure has the advantages that the welding position of a stop valve is automatically cleaned, waste gas generated during welding is automatically treated, and the stop valve is automatically overturned and limited.

Description

Technical Field

[0001] The present invention relates to the technical field of globe valves, and particularly to an arc welding device for globe valves with a splash-proof structure. Background Art

[0002] A globe valve, also known as a stop valve, belongs to a forced-sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve flap to force the sealing surface not to leak. When the medium enters the valve from below the valve flap, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem needs to be large, otherwise the valve stem will be bent. It is divided into three types according to the connection method: flange connection, threaded connection, and welding connection. Shielded metal arc welding is the most widely used welding method in industrial production. The metal to be welded is used as one electrode, and the welding rod is used as the other electrode. When the two electrodes approach, an arc is generated. The heat generated by the arc discharge (commonly known as arc combustion) melts the welding rod and the workpiece with each other and forms a weld after condensation, thereby obtaining a strong joint welding process. During the existing arc welding processing of globe valves, waste chips splash, affecting the later recycling, causing unnecessary losses, and before the welding processing, the staff needs to clean the welding part of the globe valve, affecting the overall processing efficiency. The harmful gases generated during the welding processing directly enter the operation room, affecting the environmental quality of the operation room. At the same time, after one side of the existing globe valve is processed, the operator needs to manually flip and carry it, which is time-consuming and laborious and has poor practicability. Summary of the Invention

[0003] The purpose of the present invention is to provide an arc welding device for globe valves with a splash-proof structure to solve the problems in the above background art that during the existing arc welding processing of globe valves, waste chips splash, affecting the later recycling, causing unnecessary losses, and before the welding processing, the staff needs to clean the welding part of the globe valve, affecting the overall processing efficiency. The harmful gases generated during the welding processing directly enter the operation room, affecting the environmental quality of the operation room. At the same time, after one side of the existing globe valve is processed, the operator needs to manually flip and carry it, which is time-consuming and laborious and has poor practicability.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An arc welding device for globe valves with a splash-proof structure, including a welding structure, on which an exhaust gas treatment structure and a cleaning structure are fixed. The cleaning structure is located on one side of the exhaust gas treatment structure, and a limiting support rotation structure is slidably connected to the welding structure;

[0005] The first moving component includes a first motor box. The motor in the first motor box drives the screw rod to rotate, and the rotation of the screw rod drives the first slider to move left and right;

[0006] The welding component includes a manipulator, and a welding torch body is fixed on the manipulator;

[0007] The splash-proof component includes a second motor box. A motor inside the second motor box drives a gear to rotate. The rotation of the gear drives a splash-proof door to move up and down in the welding box through a rack, thereby playing a role in preventing splashing.

[0008] The limit support rotating structure includes a second moving component. A first height adjustment component is fixed on the second moving component. An electric limit rotating component is embedded in the first height adjustment component. A support component is fixed on the first height adjustment component and is used to support and limit the stop valve. A second height adjustment component is arranged on the right side of the first height adjustment component. A rotating component is fixed on the second height adjustment component.

[0009] The first height adjustment component includes a fixing plate. The fixing plate is rotationally connected to a first electric telescopic rod through a rotator. A second storage box is fixed on the first electric telescopic rod.

[0010] The electric limit rotating component includes a fourth motor box. A motor inside the fourth motor box drives a first hydraulic box to rotate. A support sliding rod fixed on the fourth motor box is slidably limited in a limit sliding groove formed on the first hydraulic box. The position of a limit plate is adjusted by telescopic adjustment of the first hydraulic box through a telescopic structure.

[0011] The support component includes a second electric telescopic rod. A base is fixed on the second electric telescopic rod. The position of a U-shaped support plate is adjusted by telescopic adjustment of the base through a telescopic structure. The position of a first clamping plate is adjusted by telescopic adjustment of the U-shaped support plate through a telescopic structure.

[0012] The rotating component includes a connecting block. A second hydraulic box is fixed on the connecting block. A second clamping plate is rotationally connected to the second hydraulic box.

[0013] Preferably, the waste gas treatment structure includes an air inlet hood. The air inlet hood is connected to an electrostatic dust removal component through a first air inlet pipe. The electrostatic dust removal component is connected to a lime water spraying component through a second air inlet pipe. The lime water spraying component is connected to an adsorption component.

[0014] Preferably, the electrostatic dust removal component includes a first storage box. An electrostatic box is embedded in the first storage box. An electrostatic dust remover is fixed inside the electrostatic box. The electrostatic box is connected to a receiving bottle through a material guiding groove. The receiving bottle is detachably installed on the material guiding groove by threading.

[0015] By adopting the above technical solution, the electrostatic dust removal component is provided to play a role in dust removal.

[0016] Preferably, the lime water spraying component includes a spraying box. A water pump is embedded in the spraying box. The water pump is connected to a high-pressure nozzle through a first water delivery pipe and a spraying pipe. A water separation plate is arranged above the high-pressure nozzle.

[0017] By adopting the above technical solution, the waste gas is treated through the setting of the lime water spraying assembly.

[0018] Preferably, the adsorption assembly includes an adsorption box, on which an activated carbon net is slidably connected, and an exhaust port penetrates through the rear side of the adsorption box.

[0019] By adopting the above technical solution, the treated circulating gas is further treated through the setting of the adsorption assembly.

[0020] Preferably, the cleaning structure includes a third motor box. A motor in the third motor box drives a rotating rod to rotate, and the rotation of the rotating rod drives the cleaning assembly on the rotating block to rotate.

[0021] Preferably, the cleaning assembly includes a support plate, on which a blowing nozzle and a cleaning brush are inlaid. The blowing nozzle is located between the cleaning brushes, and the blowing nozzle is communicated with the air-increasing machine body through an air delivery pipe.

[0022] By adopting the above technical solution, the welding joint of the stop valve is assisted in cleaning through the setting of the cleaning assembly.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: The stop valve arc welding device with a splash-proof structure

[0024] (1) The present invention automatically plays a role in preventing splashing, automatically cleans the welding joint of the stop valve, automatically treats the waste gas generated during welding, and automatically flips and positions the stop valve. Through the setting of the second motor box, gears, racks and splash-proof doors, the welding torch body performs welding processing in a relatively sealed environment, thereby playing a role in preventing splashing. The first moving assembly and the welding assembly adjust the position of the cleaning structure. The stepping motor in the third motor box drives the rotating block on the rotating rod to rotate and adjusts the positions of the blowing nozzle and the cleaning brush on the support plate. The surface of the stop valve is automatically cleaned by the blowing nozzle and the cleaning brush, without the need for operators to manually clean, increasing the practicability;

[0025] (2) Through the setting of the first storage box, electrostatic box, electrostatic precipitator, material guiding groove and receiving bottle, the dust and impurities in the waste gas are treated. The treated waste gas, under the action of the spraying box, water pump, first water delivery pipe, spraying pipe, high-pressure nozzle and water separation plate, treats the harmful substances in the waste gas. The treated waste gas is finally further treated through the activated carbon net, thereby ensuring the waste gas treatment effect and improving the quality of the operating environment;

[0026] (3) In the present invention, the two sides of the globe valve are limited and fixed through the settings of the fourth motor box, the supporting sliding rod, the hydraulic cylinder in the first hydraulic box and the limiting plate. The globe valve is rotated by driving the stepping motor in the fourth motor box, so as to turn the globe valve over, which is convenient for welding the upper side of the globe valve. When welding the two sides of the globe valve, the electric limiting and rotating assembly moves out of the globe valve. The globe valve is supported and limited by the settings of the second electric telescopic rod, the base, the U-shaped support plate and the first clamping plate. The electric limiting and rotating assembly is driven to rotate and move upward by the first height adjustment assembly, so as to facilitate welding the two sides of the globe valve, increasing the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a front view structural schematic diagram of the present invention;

[0028] Figure 2 is a left view structural schematic diagram of the present invention;

[0029] Figure 3 is a rear view structural schematic diagram of the present invention;

[0030] Figure 4 is a distribution schematic diagram of the limiting support and rotation structure of the present invention on the welding box;

[0031] Figure 5 is a structural schematic diagram of the lime water spraying component of the present invention;

[0032] Figure 6 is a structural schematic diagram of the cleaning component of the present invention;

[0033] Figure 7 is a structural schematic diagram of the limiting support and rotation structure of the present invention;

[0034] Figure 8 is a three-dimensional structural schematic diagram of the limiting support and rotation structure of the present invention.

[0035] In the figure: 1. Welding structure; 11. Bottom box; 12. Welding box; 13. First moving component; 131. First motor box; 132. Screw rod; 133. First slider; 14. Welding component; 141. Manipulator; 142. Welding torch body; 15. Splash-proof component; 151. Second motor box; 152. Gear; 153. Rack; 154. Splash-proof door; 2. Exhaust gas treatment structure; 21. Air intake hood; 22. First intake pipe; 23. Electrostatic dust removal component; 231. First storage box; 232. Electrostatic box; 233. Electrostatic precipitator; 234. Feeding trough; 235. Receiving bottle; 24. Second intake pipe; 25. Lime water spraying component; 251. Spraying box; 252. Water pump; 253. First water delivery pipe; 254. Spraying pipe; 255. High-pressure nozzle; 256. Water separation plate; 26. Adsorption component; 261. Adsorption box; 262. Activated carbon net; 263. Exhaust port; 3. Cleaning structure; 31. Third motor box; 32. Rotating rod; 33. Rotating block; 34. Cleaning component; 341. Support plate; 342. Blowing nozzle; 343. Cleaning brush; 344. Air delivery pipe; 345. Air booster body; 4. Limit support rotating structure; 41. Second moving component; 42. First height adjustment component; 421. Fixed plate; 422. Rotator; 423. First electric telescopic rod; 424. Second storage box; 43. Electric limit rotating component; 431. Fourth motor box; 432. Support sliding rod; 433. First hydraulic box; 434. Limit plate; 44. Support component; 441. Second electric telescopic rod; 442. Base; 443. U-shaped support plate; 444. First clamping plate; 45. Second height adjustment component; 46. Rotating component; 461. Connecting block; 462. Second hydraulic box; 463. Second clamping plate. Detailed implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1-8 , the present invention provides a technical solution: a globe valve arc welding device with a splash-proof structure, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it includes a welding structure 1, a first moving assembly 13 including a first motor box 131, a motor in the first motor box 131 drives a screw 132 to rotate, and the rotation of the screw 132 drives the first slider 133 to move left and right, a welding assembly 14 including a manipulator 141, and a welding gun body 142 is fixed on the manipulator 141, and a splash-proof assembly 15 including a second motor box 151, a motor in the second motor box 151 drives a gear 152 to rotate, and the rotation of the gear 152 drives the splash-proof door 154 to move up and down in the welding box 12 through the rack 153, thereby playing a role in splash prevention;

[0038] Among them, a PLC control system that controls the entire equipment is fixed on the bottom box 11. The telescopic structure in this application is a hydraulic cylinder. Under the requirement of high-precision synchronization of multiple groups of hydraulic cylinders, position sensors can be used to monitor the real-time displacement of each hydraulic cylinder, and the hydraulic valves can be adjusted through the feedback control system to ensure that the movements of each group of hydraulic cylinders are always synchronized;

[0039] Specifically, two groups of splash-proof components 15 are slidably connected to the welding box 12. The two groups of splash-proof components 15 are symmetrically arranged. The motors in the second motor box 151 are stepper motors. The stepper motors in the two groups of second motor boxes 151 work synchronously.

[0040] Furthermore, the welding assembly 14 is electrically connected to an integrated arc control system, which optimizes arc stability through closed-loop control and reduces spatter and wire breakage. A weld seam tracking system is fixed to the manipulator 141, which uses laser and visual sensors to correct path deviations in real time, reducing manual intervention.

[0041] In the above scheme, the gear 152 is driven to rotate with the assistance of the stepping motor in the second motor box 151 on the welding box 12, and the rotation of the gear 152 drives the splash-proof door 154 on the rack 153 to move up and down in the sliding groove on the welding box 12, thereby sealing the welding box 12 and playing an auxiliary splash-proof role. The screw 132 is driven to rotate with the assistance of the stepping motor in the first motor box 131, and the rotation of the screw 132 drives the welding gun body 142 on the manipulator 141 to rotate through the first slider 133, thereby welding the stop valve, and waste chips fall through the leakage hole on the upper side of the operating table on the welding box 12 and are collected for easy recycling.

[0042] like Figure 3 、 Figure 4 and Figure 5As shown in the figure, an exhaust gas treatment structure 2 and a cleaning structure 3 are fixed on the welding structure 1. The exhaust gas treatment structure 2 includes an air inlet hood 21. The air inlet hood 21 is connected to an electrostatic dust removal assembly 23 through a first air inlet pipe 22. The electrostatic dust removal assembly 23 is connected to a lime water spraying assembly 25 through a second air inlet pipe 24. The lime water spraying assembly 25 is connected to an adsorption assembly 26. The electrostatic dust removal assembly 23 includes a first storage tank 231. An electrostatic box 232 is embedded in the first storage tank 231. An electrostatic dust collector 233 is fixed in the electrostatic box 232. The electrostatic box 232 is connected to a receiving bottle 235 through a material guiding groove 234. The receiving bottle 235 is detachably installed with the material guiding groove 234 by means of threads. The lime water spraying assembly 25 includes a spraying tank 251. A water pump 252 is embedded in the spraying tank 251. The water pump 252 is connected to a high-pressure nozzle 255 through a first water delivery pipe 253 and a spraying pipe 254. A water isolation plate 256 is arranged above the high-pressure nozzle 255. The adsorption assembly 26 includes an adsorption box 261. An activated carbon net 262 is slidably connected to the adsorption box 261. An exhaust port 263 penetrates through the rear side of the adsorption box 261;

[0043] Among them, a filter screen is embedded in the air inlet hood 21 to prevent waste chips from entering;

[0044] Specifically, two groups of spraying pipes 254 are arranged in the spraying tank 251. A plurality of high-pressure nozzles 255 are arranged on both groups of spraying pipes 254. The plurality of high-pressure nozzles 255 are equidistantly distributed on the spraying pipes 254. A waterproof motor is embedded in the lower side inside the spraying tank 251. The waterproof motor drives a stirring rod to rotate, thereby stirring the lime water in the spraying tank 251 to prevent the lime water from precipitating;

[0045] Furthermore, two groups of activated carbon nets 262 are provided. The grid densities of the two groups of activated carbon nets 262 are different. A gas monitor is fixed on the adsorption box 261 to ensure the quality of the circulating gas;

[0046] In the above solution, with the assistance of a fan in the first air inlet pipe 22, the exhaust gas enters the electrostatic box 232 in the first storage tank 231 through the air inlet hood 21 and the first air inlet pipe 22. Under the assistance of the electrostatic dust collector 233, dust removal is achieved. The generated impurities are stored inside the receiving bottle 235 through the material guiding groove 234. Rotate the receiving bottle 235, and the receiving bottle 235 is separated from the material guiding groove 234, thereby processing the impurities in the receiving bottle 235. The exhaust gas after dust removal enters the spraying tank 251 through the second air inlet pipe 24. Under the assistance of the water pump 252, the lime water is filtered and then enters the high-pressure nozzle 255 through the first water delivery pipe 253 and the spraying pipe 254. Spraying is carried out under the assistance of the plurality of high-pressure nozzles 255, thereby processing the harmful gas. The processed gas enters the inside of the adsorption box 261 after passing through the water isolation plate 256 and is subjected to adsorption treatment under the assistance of the activated carbon net 262 in the adsorption box 261, and finally is discharged through the exhaust port 263 on the adsorption box 261.

[0047] As Figure 2 , Figure 3 , Figure 4 and Figure 6 shown, the cleaning structure 3 is located on one side of the waste gas treatment structure 2. The cleaning structure 3 includes a third motor box 31. A motor in the third motor box 31 drives a rotating rod 32 to rotate. The rotation of the rotating rod 32 drives a cleaning assembly 34 on a rotating block 33 to rotate. The cleaning assembly 34 includes a support plate 341. A blowing nozzle 342 and a cleaning brush 343 are embedded on the support plate 341. The blowing nozzle 342 is located between the cleaning brushes 343. The blowing nozzle 342 is connected to an air-increasing machine body 345 through an air delivery pipe 344;

[0048] Among them, two groups of cleaning assemblies 34 are provided, and the two groups of cleaning assemblies 34 are symmetrically arranged;

[0049] Specifically, the third motor box 31 is fixed on the surface of the air inlet hood 21. The outer shell of the air inlet hood 21 and the support plate 341 are slidably and limitedly connected through a rope-type limiter, so as to support and limit the cleaning assembly 34;

[0050] In the preferred solution of this embodiment, with the assistance of a stepping motor in the third motor box 31, the rotating rod 32 is driven to rotate. The rotation of the rotating rod 32 drives the support plate 341 on the rotating block 33 to rotate. Finally, the support plate 341 drives the blowing nozzle 342 and the cleaning brush 343 to rotate to the required angle. With the assistance of the cleaning brush 343 on the support plate 341, the welding part of the stop valve is scrubbed. With the assistance of the air-increasing machine body 345, the pressurized filtered gas enters the blowing nozzle 342 on the support plate 341 through the air delivery pipe 344. Multiple blowing nozzles 342 blow and clean the surface of the stop valve, also ensuring the welding effect.

[0051] As Figure 1 , Figure 4 , Figure 7 and Figure 8As shown, a limit support rotating structure 4 is slidably connected to the welding structure 1. The limit support rotating structure 4 includes a second moving component 41. A first height adjustment component 42 is fixed on the second moving component 41. An electric limit rotating component 43 is embedded in the first height adjustment component 42. A support component 44 is fixed on the first height adjustment component 42 and is used to support and limit the globe valve. A second height adjustment component 45 is arranged on the right side of the first height adjustment component 42. A rotating component 46 is fixed on the second height adjustment component 45. The first height adjustment component 42 includes a fixed plate 421. The fixed plate 421 is rotatably connected to a first electric telescopic rod 423 through a rotator 422. A second storage box 424 is fixed on the first electric telescopic rod 423. The electric limit rotating component 43 includes a fourth motor box 431. A motor in the fourth motor box 431 drives a first hydraulic box 433 to rotate. A support sliding rod 432 fixed on the fourth motor box 431 is slidably limited in a limit sliding groove formed on the first hydraulic box 433. The first hydraulic box 433 adjusts the position of a limit plate 434 through a telescopic structure. The support component 44 includes a second electric telescopic rod 441. A base 442 is fixed on the second electric telescopic rod 441. The base 442 adjusts the position of a U-shaped support plate 443 through a telescopic structure. The U-shaped support plate 443 adjusts the position of a first clamping plate 444 through a telescopic structure. The rotating component 46 includes a connection block 461. A second hydraulic box 462 is fixed on the connection block 461. A second clamping plate 463 is rotatably connected to the second hydraulic box 462;

[0052] Among them, the second moving component 41 and the first moving component 13, as well as the first height adjustment component 42 and the second height adjustment component 45, have the same structure. Support components 44 are fixed on both the first height adjustment component 42 and the second height adjustment component 45;

[0053] Specifically, the lower side of the base 442 drives an anti-slip support bottom plate to move through a hydraulic cylinder, and finally plays a supporting role for the base 442. A pressure sensor is embedded on the anti-slip support bottom plate, and the model of the pressure sensor is CYYZ11;

[0054] Furthermore, four groups of hydraulic cylinders are embedded in the first hydraulic box 433 and the second hydraulic box 462, and the four hydraulic cylinders are equidistantly distributed on the first hydraulic box 433 and the second hydraulic box 462;

[0055] In the preferred solution of this embodiment, with the assistance of the second moving component 41, the fixing plate 421 is driven to move relatively. The movement of the fixing plate 421 drives the fourth motor box 431 to move to the required position through the rotator 422, the first electric telescopic rod 423 and the second storage box 424. The movement of the fourth motor box 431 drives the first hydraulic box 433 to move into the stop valve through the support sliding rod 432. The hydraulic cylinder in the first hydraulic box 433 drives the limiting plate 434 to move towards each other through the hydraulic rod, so as to limit the stop valve. With the assistance of the second electric telescopic rod 441, the base 442 is driven to move to the required position. The lower side of the base 442 drives the anti-slip support bottom plate to support through the hydraulic rod of the hydraulic cylinder. The hydraulic cylinder on the base 442 drives the U-shaped support plate 443 to move upward through the hydraulic rod. The U-shaped support plate 443 plays a role in supporting the stop valve. With the assistance of the hydraulic cylinder on the U-shaped support plate 443, the first clamping plate 444 is driven to move relatively, so as to fix both sides of the stop valve. When the stop valve needs to be rotated, with the assistance of the first electric telescopic rod 423, the second storage box 424 is driven to move relatively to the required position, so as to drive the stop valve between the electric limiting rotation components 43 to move upward to the required position. With the assistance of the stepping motor in the fourth motor box 431, the first hydraulic box 433 is driven to rotate. The rotation of the first hydraulic box 433 drives the stop valve to rotate through the limiting plate 434. The rotation of the stop valve drives the second clamping plate 463 in the second hydraulic box 462 to rotate. The second hydraulic box 462 rotates on the connecting block 461. The setting of the support sliding rod 432 plays a role in limiting and supporting. The stop valve is supported by the support component 44. The second electric telescopic rod 441 and the second moving component 41 work simultaneously, so as to drive the electric limiting rotation component 43 and the rotating component 46 to separate from the stop valve, so as to fix the stop valve through the U-shaped support plate 443 and the first clamping plate 444. With the assistance of the rotator 422, the electric limiting rotation component 43 is driven to rotate through the first electric telescopic rod 423 and the second storage box 424, so as to facilitate the welding process at the flange on both sides of the stop valve.

[0056] Working principle: When using the stop valve arc welding device with a splash-proof structure, connect the external power supply. The stop valve is welded through the setting of the welding structure 1. The waste gas is treated through the setting of the waste gas treatment structure 2. The welding part of the stop valve is cleaned through the setting of the cleaning structure 3. The stop valve is assisted in limiting and supporting through the setting of the limiting support rotation structure 4. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0057] The orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention in a simplified manner, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the protected content of the present invention.

[0058] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A globe valve arc welding device with a splash-proof structure, characterized in that, It includes a welding structure (1), on which an exhaust gas treatment structure (2) and a cleaning structure (3) are fixed. The cleaning structure (3) is located on one side of the exhaust gas treatment structure (2), and a limiting support rotating structure (4) is slidably connected to the welding structure (1). The first moving component (13) includes a first motor box (131). A motor in the first motor box (131) drives a screw rod (132) to rotate, and the rotation of the screw rod (132) drives a first slider (133) to move left and right. The welding component (14) includes a manipulator (141), and a welding torch body (142) is fixed on the manipulator (141). The splash-proof component (15) includes a second motor box (151). A motor in the second motor box (151) drives a gear (152) to rotate, and the rotation of the gear (152) drives a splash-proof door (154) to move up and down in the welding box (12) through a rack (153), thereby playing a role in preventing splashing. The limiting support rotating structure (4) includes a second moving component (41). A first height adjustment component (42) is fixed on the second moving component (41). An electric limiting rotating component (43) is inlaid in the first height adjustment component (42). A support component (44) is fixed on the first height adjustment component (42) and is used to support and limit a stop valve. A second height adjustment component (45) is arranged on the right side of the first height adjustment component (42), and a rotating component (46) is fixed on the second height adjustment component (45). The first height adjustment component (42) includes a fixing plate (421). The fixing plate (421) is rotationally connected to a first electric telescopic rod (423) through a rotator (422), and a second storage box (424) is fixed on the first electric telescopic rod (423). The electric limiting rotating component (43) includes a fourth motor box (431). A motor in the fourth motor box (431) drives a first hydraulic box (433) to rotate. A support sliding rod (432) fixed on the fourth motor box (431) is slidably limited in a limiting sliding groove opened on the first hydraulic box (433), and the first hydraulic box (433) adjusts the position of a limiting plate (434) through a telescopic structure. The support component (44) includes a second electric telescopic rod (441). A base (442) is fixed on the second electric telescopic rod (441). The base (442) adjusts the position of a U-shaped support plate (443) through a telescopic structure, and the U-shaped support plate (443) adjusts the position of a first clamping plate (444) through a telescopic structure. The rotating component (46) includes a connecting block (461). A second hydraulic box (462) is fixed on the connecting block (461), and a second clamping plate (463) is rotationally connected to the second hydraulic box (462).

2. The globe valve arc welding device with a splash-proof structure according to claim 1, characterized in that: The exhaust gas treatment structure (2) includes an air inlet hood (21). The air inlet hood (21) is communicated with an electrostatic dust removal component (23) through a first air inlet pipe (22). The electrostatic dust removal component (23) is communicated with a lime water spraying component (25) through a second air inlet pipe (24), and the lime water spraying component (25) is communicated with an adsorption component (26).

3. The globe valve arc welding device with a splash-proof structure according to claim 2, characterized in that: The electrostatic dust removal assembly (23) includes a first storage tank (231). An electrostatic box (232) is embedded in the first storage tank (231). An electrostatic dust collector (233) is fixed in the electrostatic box (232). The electrostatic box (232) is connected to a receiving bottle (235) through a material guiding groove (234). The receiving bottle (235) is detachably installed with the material guiding groove (234) by means of a thread.

4. The globe valve arc welding device with a splash-proof structure according to claim 2, characterized in that: The lime water spraying assembly (25) includes a spraying tank (251). A water pump (252) is embedded in the spraying tank (251). The water pump (252) is connected to a high-pressure spray head (255) through a first water pipe (253) and a spraying pipe (254). A water separation plate (256) is arranged above the high-pressure spray head (255).

5. The stop valve arc welding device with a splash-proof structure according to claim 2, characterized in that: The adsorption assembly (26) includes an adsorption box (261). An activated carbon net (262) is slidably connected to the adsorption box (261). An exhaust port (263) penetrates through the rear side of the adsorption box (261).

6. The stop valve arc welding device with a splash-proof structure according to claim 1, characterized in that: The cleaning structure (3) includes a third motor box (31). A motor in the third motor box (31) drives a rotating rod (32) to rotate. The rotation of the rotating rod (32) drives a cleaning assembly (34) on a rotating block (33) to rotate.

7. An electric arc welding device for a globe valve with a splash-proof structure according to claim 6, characterized in that: The cleaning assembly (34) includes a support plate (341). A blowing spray head (342) and a cleaning brush (343) are embedded in the support plate (341). The blowing spray head (342) is located between the cleaning brushes (343). The blowing spray head (342) is connected to an air booster body (345) through an air delivery pipe (344).

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